TY - JOUR A1 - Scholz, Robert A1 - Lindner, Steven A1 - Loncaric, Ivor A1 - Tremblay, Jean Christophe A1 - Juaristi, J. A1 - Alducin, Maite A1 - Saalfrank, Peter T1 - Vibrational response and motion of carbon monoxide on Cu(100) driven by femtosecond laser pulses: Molecular dynamics with electronic friction JF - Physical review : B, Condensed matter and materials physics N2 - Carbon monoxide on copper surfaces continues to be a fascinating, rich microlab for many questions evolving in surface science. Recently, hot-electron mediated, femtosecond-laser pulse induced dynamics of CO molecules on Cu(100) were the focus of experiments [Inoue et al., Phys. Rev. Lett. 117, 186101 (2016)] and theory [Novko et al., Phys. Rev. Lett. 122, 016806 (2019)], unraveling details of the vibrational nonequilibrium dynamics on ultrashort (subpicoseconds) timescales. In the present work, full-dimensional time-resolved hot-electron driven dynamics are studied by molecular dynamics with electronic friction (MDEF). Dissipation is included by a friction term in a Langevin equation which describes the coupling of molecular degrees of freedom to electron-hole pairs in the copper surface, calculated from gradient-corrected density functional theory (DFT) via a local density friction approximation (LDFA). Relaxation due to surface phonons is included by a generalized Langevin oscillator model. The hot-electron induced excitation is described via a time-dependent electronic temperature, the latter derived from an improved two-temperature model. Our parameter-free simulations on a precomputed potential energy surface allow for excellent statistics, and the observed trends are confirmed by on-the-fly ab initio molecular dynamics with electronic friction (AIMDEF) calculations. By computing time-resolved frequency maps for selected molecular vibrations, instantaneous frequencies, probability distributions, and correlation functions, we gain microscopic insight into hot-electron driven dynamics and we can relate the time evolution of vibrational internal CO stretch-mode frequencies to measured data, notably an observed redshift. Quantitatively, the latter is found to be larger in MDEF than in experiment and possible reasons are discussed for this observation. In our model, in addition we observe the excitation and time evolution of large-amplitude low-frequency modes, lateral CO surface diffusion, and molecular desorption. Effects of surface atom motion and of the laser fluence are also discussed. Y1 - 2019 U6 - https://doi.org/10.1103/PhysRevB.100.245431 SN - 2469-9950 SN - 2469-9969 VL - 100 IS - 24 PB - American Physical Society CY - College Park ER - TY - JOUR A1 - Melani, Giacomo A1 - Nagata, Yuki A1 - Campen, Richard Kramer A1 - Saalfrank, Peter T1 - Vibrational spectra of dissociatively adsorbed D2O on Al-terminated alpha-Al2O3(0001) surfaces from ab initio molecular dynamics JF - The journal of chemical physics : bridges a gap between journals of physics and journals of chemistr N2 - Water can adsorb molecularly or dissociatively onto different sites of metal oxide surfaces. These adsorption sites can be disentangled using surface-sensitive vibrational spectroscopy. Here, we model Vibrational Sum Frequency (VSF) spectra for various forms of dissociated, deuterated water on a reconstructed, Al-terminated α-Al2O3(0001) surface at submonolayer coverages (the so-called 1-2, 1-4, and 1-4′ modes). Using an efficient scheme based on velocity-velocity autocorrelation functions, we go beyond previous normal mode analyses by including anharmonicity, mode coupling, and thermal surface motion in the framework of ab initio molecular dynamics. In this way, we calculate vibrational density of states curves, infrared, and VSF spectra. Comparing computed VSF spectra with measured ones, we find that relative frequencies of resonances are in quite good agreement and linewidths are reasonably well represented, while VSF intensities coincide not well. We argue that intensities are sensitively affected by local interactions and thermal fluctuations, even at such low coverage, while absolute peak positions strongly depend on the choice of the electronic structure method and on the appropriate inclusion of anharmonicity. Y1 - 2019 U6 - https://doi.org/10.1063/1.5099895 SN - 0021-9606 SN - 1089-7690 VL - 150 IS - 24 PB - American Institute of Physics CY - Melville ER - TY - JOUR A1 - Melani, Giacomo A1 - Nagata, Yuki A1 - Wirth, Jonas A1 - Saalfrank, Peter T1 - Vibrational spectroscopy of hydroxylated alpha-Al2O3(0001) surfaces with and without water BT - an ab initio molecular dynamics study JF - The journal of chemical physics : bridges a gap between journals of physics and journals of chemistr N2 - Using gradient- and dispersion-corrected density functional theory in connection with ab initio molecular dynamics and efficient, parametrized Velocity-Velocity Autocorrelation Function (VVAF) methodology, we study the vibrational spectra (Vibrational Sum Frequency, VSF, and infrared, IR) of hydroxylated alpha-Al2O3(0001) surfaces with and without additional water. Specifically, by considering a naked hydroxylated surface and the same surface with a particularly stable, "ice-like" hexagonal water later allows us to identify and disentangle main spectroscopic bands of OH bonds, their orientation and dynamics, and the role of water adsorption. In particular, we assign spectroscopic signals around 3700 cm(-1) as being dominated by perpendicularly oriented non-hydrogen bonded aluminol groups, with and without additional water. Furthermore, the thin water layer gives spectroscopic signals which are already comparable to previous theoretical and experimental findings for the solid/(bulk) liquid interface, showing that water molecules closest to the surface play a decisive role in the vibrational response of these systems. From a methodological point of view, the effects of temperature, anharmonicity, hydrogen-bonding, and structural dynamics are taken into account and analyzed, allowing us to compare the calculated IR and VSF spectra with the ones based on normal mode analysis and vibrational density of states. The VVAF approach employed in this work appears to be a computationally accurate yet feasible method to address the vibrational fingerprints and dynamical properties of water/metal oxide interfaces. Published by AIP Publishing. Y1 - 2018 U6 - https://doi.org/10.1063/1.5023347 SN - 0021-9606 SN - 1089-7690 VL - 149 IS - 1 PB - American Institute of Physics CY - Melville ER - TY - JOUR A1 - Xiong, Tao A1 - Saalfrank, Peter T1 - Vibrationally Broadened Optical Spectra of Selected Radicals and Cations Derived from Adamantane: A Time-Dependent Correlation Function Approach JF - The journal of physical chemistry : A, Molecules, spectroscopy, kinetics, environment & general theory N2 - Diamondoids are hydrogen-saturated molecular motifs cut out of diamond, forming a class of materials with tunable optoelectronic properties. In this work, we extend previous work on neutral, closed-shell diamondoids by computing with hybrid density functional theory and time-dependent correlation functions vibrationally broadened absorption spectra of cations and radicals derived from the simplest diamondoid, adamantane, namely, the neutral 1- and 2-adamantyl radicals (C10H15), the 1- and 2-adamantyl cations (C10H15+), and the adamantane radical cation (C10H16+). For selected cases, we also report vibrationally broadened emission, photoelectron, and resonance Raman spectra. Furthermore, the effect of the damping factor on the vibrational fine-structure is studied. The following trends are found: (1) Low-energy absorptions of the adamantyl radicals and cations, and of the adamantane cation, are all strongly red-shifted with respect to adamantane; (2) also, emission spectra are strongly red-shifted, whereas photoelectron spectra are less affected for the cases studied; (3) vibrational fine-structures are reduced compared to those of adamantane; (4) the spectroscopic signals of 1- and 2-adamantyl species are significantly different from each other; and (5) reducing the damping factor has only a limited effect on the vibrational fine-structure in most cases. This suggests that removing hydrogen atoms and/or electrons from adamantane leads to new optoelectronic properties, which should be detectable by vibronic spectroscopy. Y1 - 2019 U6 - https://doi.org/10.1021/acs.jpca.9b03305 SN - 1089-5639 SN - 1520-5215 VL - 123 IS - 41 SP - 8871 EP - 8880 PB - American Chemical Society CY - Washington ER - TY - JOUR A1 - Xiong, Tao A1 - Wlodarczyk, Radoslaw A1 - Saalfrank, Peter T1 - Vibrationally resolved absorption and fluorescence spectra of perylene and N-substituted derivatives from autocorrelation function approaches JF - Chemical physics : a journal devoted to experimental and theoretical research involving problems of both a chemical and physical nature N2 - Vibrationally resolved absorption and emission (fluorescence) spectra of perylene and its N-derivatives in gas phase and in solution (acetonitrile) were simulated using a time-dependent approach based on correlation functions determined by density functional theory. By systematically varying the number and position of N atoms, it is shown that the presence of nitrogen heteroatoms has a negligible effect on the molecular structure and geometric distortions upon electronic transitions, while spectral properties change: in particular the number of N atoms is important while their position is less decisive. Thus, the N-substitution can be used to fine-tune the optical properties of perylene-based molecules. KW - Perylene KW - Vibronic spectrum KW - Correlation function KW - Dimer KW - Excimer KW - PCM Y1 - 2018 U6 - https://doi.org/10.1016/j.chemphys.2018.06.011 SN - 0301-0104 SN - 1873-4421 VL - 515 SP - 728 EP - 736 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Banerjee, Shiladitya A1 - Saalfrank, Peter T1 - Vibrationally resolved absorption, emission and resonance Raman spectra of diamondoids : a study based on time- dependent correlation functions Y1 - 2014 UR - http://pubs.rsc.org/en/content/articlehtml/2014/cp/c3cp53535e U6 - https://doi.org/10.1039/C3CP53535E ER - TY - JOUR A1 - Banerjee, Shiladitya A1 - Saalfrank, Peter T1 - Vibrationally resolved absorption, emission and resonance Raman spectra of diamondoids: a study based on time-dependent correlation functions JF - Physical chemistry, chemical physics : a journal of European Chemical Societies Y1 - 2014 U6 - https://doi.org/10.1039/c3cp53535e SN - 1463-9076 SN - 1463-9084 VL - 16 IS - 1 SP - 144 EP - 158 PB - Royal Society of Chemistry CY - Cambridge ER - TY - JOUR A1 - Banerjee, Shiladitya A1 - Stueker, Tony A1 - Saalfrank, Peter T1 - Vibrationally resolved optical spectra of modified diamondoids obtained from time-dependent correlation function methods JF - Physical chemistry, chemical physics : a journal of European Chemical Societies N2 - Optical properties of modified diamondoids have been studied theoretically using vibrationally resolved electronic absorption, emission and resonance Raman spectra. A time-dependent correlation function approach has been used for electronic two-state models, comprising a ground state (g) and a bright, excited state (e), the latter determined from linear-response, time-dependent density functional theory (TD-DFT). The harmonic and Condon approximations were adopted. In most cases origin shifts, frequency alteration and Duschinsky rotation in excited states were considered. For other cases where no excited state geometry optimization and normal mode analysis were possible or desired, a short-time approximation was used. The optical properties and spectra have been computed for (i) a set of recently synthesized sp(2)/sp(3) hybrid species with CQC double-bond connected saturated diamondoid subunits, (ii) functionalized (mostly by thiol or thione groups) diamondoids and (iii) urotropine and other C-substituted diamondoids. The ultimate goal is to tailor optical and electronic features of diamondoids by electronic blending, functionalization and substitution, based on a molecular-level understanding of the ongoing photophysics. Y1 - 2015 U6 - https://doi.org/10.1039/c5cp02615f SN - 1463-9076 SN - 1463-9084 VL - 17 IS - 29 SP - 19656 EP - 19669 PB - Royal Society of Chemistry CY - Cambridge ER - TY - JOUR A1 - Banerjee, Shiladitya A1 - Stüker, Tony A1 - Saalfrank, Peter T1 - Vibrationally resolved optical spectra of modified diamondoids obtained from time-dependent correlation function methods JF - Physical chemistry, chemical physics : PCCP ; a journal of European chemical societies N2 - Optical properties of modified diamondoids have been studied theoretically using vibrationally resolved electronic absorption, emission and resonance Raman spectra. A time-dependent correlation function approach has been used for electronic two-state models, comprising a ground state (g) and a bright, excited state (e), the latter determined from linear-response, time-dependent density functional theory (TD-DFT). The harmonic and Condon approximations were adopted. In most cases origin shifts, frequency alteration and Duschinsky rotation in excited states were considered. For other cases where no excited state geometry optimization and normal mode analysis were possible or desired, a short-time approximation was used. The optical properties and spectra have been computed for (i) a set of recently synthesized sp2/sp3 hybrid species with C[double bond, length as m-dash]C double-bond connected saturated diamondoid subunits, (ii) functionalized (mostly by thiol or thione groups) diamondoids and (iii) urotropine and other C-substituted diamondoids. The ultimate goal is to tailor optical and electronic features of diamondoids by electronic blending, functionalization and substitution, based on a molecular-level understanding of the ongoing photophysics. Y1 - 2015 U6 - https://doi.org/10.1039/C5CP02615F SN - 1463-9084 SN - 1463-9076 VL - 17 IS - 29 SP - 19656 EP - 19669 PB - Royal Society of Chemistry CY - Cambridge ER - TY - JOUR A1 - Xiong, Tao A1 - Włodarczyk, Radosław Stanisław A1 - Gallandi, Lukas A1 - Körzdörfer, Thomas A1 - Saalfrank, Peter T1 - Vibrationally resolved photoelectron spectra of lower diamondoids BT - a time-dependent approach JF - The journal of chemical physics : bridges a gap between journals of physics and journals of chemistry N2 - Vibrationally resolved lowest-energy bands of the photoelectron spectra (PES) of adamantane, diamantane, and urotropine were simulated by a time-dependent correlation function approach within the harmonic approximation. Geometries and normal modes for neutral and cationic molecules were obtained from B3LYP hybrid density functional theory (DFT). It is shown that the simulated spectra reproduce the experimentally observed vibrational finestructure (or its absence) quite well. Origins of the finestructure are discussed and related to recurrences of autocorrelation functions and dominant vibrations. Remaining quantitative and qualitative errors of the DFT-derived PES spectra refer to (i) an overall redshift by ∼0.5 eV and (ii) the absence of satellites in the high-energy region of the spectra. The former error is shown to be due to the neglect of many-body corrections to ordinary Kohn-Sham methods, while the latter has been argued to be due to electron-nuclear couplings beyond the Born-Oppenheimer approximation [Gali et al., Nat. Commun. 7, 11327 (2016)]. Y1 - 2018 U6 - https://doi.org/10.1063/1.5012131 SN - 0021-9606 SN - 1089-7690 VL - 148 IS - 4 PB - American Institute of Physics CY - Melville ER - TY - JOUR A1 - Glerum, Anne A1 - Brune, Sascha A1 - Stamps, D. Sarah A1 - Strecker, Manfred T1 - Victoria continental microplate dynamics controlled by the lithospheric strength distribution of the East African Rift JF - Nature Communications N2 - The Victoria microplate between the Eastern and Western Branches of the East African Rift System is one of the largest continental microplates on Earth. In striking contrast to its neighboring plates, Victoria rotates counterclockwise with respect to Nubia. The underlying cause of this distinctive rotation has remained elusive so far. Using 3D numerical models, we investigate the role of pre-existing lithospheric heterogeneities in continental microplate rotation. We find that Victoria's rotation is primarily controlled by the distribution of rheologically stronger zones that transmit the drag of the major plates to the microplate and of the mechanically weaker mobile belts surrounding Victoria that facilitate rotation. Our models reproduce Victoria's GPS-derived counterclockwise rotation as well as key complexities of the regional tectonic stress field. These results reconcile competing ideas on the opening of the rift system by highlighting differences in orientation of the far-field divergence, local extension, and the minimum horizontal stress. One of the largest continental microplates on Earth is situated in the center of the East African Rift System, and oddly, the Victoria microplate rotates counterclockwise with respect to the neighboring African tectonic plate. Here, the authors' modelling results suggest that Victoria microplate rotation is caused by edge-driven lithospheric processes related to the specific geometry of rheologically weak and strong regions. Y1 - 2020 U6 - https://doi.org/10.1038/s41467-020-16176-x SN - 2041-1723 VL - 11 IS - 1 PB - Nature Publishing Group CY - London ER - TY - BOOK ED - Böhnke, Dietmar ED - Brusberg-Kiermeier, Stefanie ED - Drexler, Peter T1 - Victorian highways, Victorian byways BT - new approaches to nineteenth century British literature and culture T3 - Potsdamer Beiträge zur Kultur- und Sozialgeschichte Y1 - 2010 SN - 978-3-89626-939-3 VL - 8 PB - Trafo CY - Berlin ER - TY - JOUR A1 - Havemann, Anna T1 - Victorian Women Artists BT - their Quest for Independence and Professional Artistic Training JF - Victorian highways, Victorian byways : new approaches to nineteenth century British literature and culture Y1 - 2010 SN - 978-3-89626-939-3 SP - 15 EP - 40 PB - Trafo CY - Berlin ER - TY - BOOK ED - Kazepov, Yuri ED - Verwiebe, Roland T1 - Vienna BT - Still a just city? T3 - Built environment city studies N2 - This book explores and debates the urban transformations that have taken place in Vienna over the past 30 years and their consequences in policy fields such as labour and housing, political and social participation and the environment. Historically, European cities have been characterised by a strong association between social cohesion, quality of life, economic ambition and a robust State. Vienna is an excellent example for that. In more recent years, however, cities were pressured to change policy principles and mechanisms in the context of demographic shifts, post-industrial transformations and welfare recalibration which have led to worsened social conditions in many cities. Each chapter in this volume discusses Vienna's responses to these pressures in key policy arenas, looking at outcomes from the context-specific local arrangements. Against a theoretical framework debating the European city as a model of inclusion and social justice, authors explore the local capacity to innovate urban policies and to address new social risks, while paying attention to potential trade-offs. The book questions and assesses the city's resilience using time series and an institutional analysis of four key dimensions that characterise the European city model within the context of post-industrial transition: redistribution, recognition, representation and sustainability. It offers a multiscalar perspective of urban governance through labour, housing, participatory and environmental policies, bringing together different levels and public policy types. KW - Built Environment KW - Environment and Sustainability KW - Geography KW - Social Sciences KW - Urban Studies Y1 - 2021 SN - 978-0-367-68011-4 SN - 978-1-003133-82-7 SN - 978-0-367-68013-8 U6 - https://doi.org/10.4324/9781003133827 PB - Routledge CY - London ER - TY - CHAP A1 - Verwiebe, Roland A1 - Kazepov, Yuri A1 - Friesenecker, Michael A1 - Ahn, Byeongsun T1 - Vienna's resilience BT - Between urban justice and the challenges ahead T2 - Vienna: Still a Just City? N2 - This chapter provides a synthesis of the volume, bringing together the aspects that characterise each of the single policy domains analysed throughout and highlighting their synergic effects on the output. In particular, it addresses the dualisation tendencies between ‘winners’ and ‘losers’ in Vienna’s urban transformation in the changing dimensions of social stratification, on the one hand; and the mechanisms of institutional resilience, on the other hand. Despite the inclusive welfare system, emerging vulnerabilities currently pose new challenges for Vienna’s redistributive capacity in the key policy areas. Existing institutional arrangements and their regulatory capacities are a good starting point to answer the question: is Vienna still a just city? Y1 - 2021 SN - 978-1-003-13382-7 SN - 978-0-367-68011-4 SN - 978-0-367-68013-8 U6 - https://doi.org/10.4324/9781003133827-14 SP - 146 EP - 158 PB - Routledge CY - London ER - TY - JOUR A1 - Scheffler, Christiane A1 - Nguyen, Thi Hong A1 - Hermanussen, Michael T1 - Vietnamese migrants are as tall as they want to be JF - Human biology and public health N2 - Background: Members of the same social group tent to have the same body height. Migrants tend to adjust in height to their host communities. Objectives: Social-Economic-Political-Emotional (SEPE) factors influence growth. We hypothesized that Vietnamese young adult migrants in Germany (1) are taller than their parents, (2) are as tall as their German peers, and (3) are as tall as predicted by height expectation at age 13 years. Sample: The study was conducted in 30 male and 54 female Vietnamese migrants (mean age 26.23 years. SD=4.96) in Germany in 2020. Methods: Information on age, sex, body height, school and education, job, height and ethnicity of best friend, migration history and cultural identification, parental height and education, and recalled information on their personal height expectations at age 13 years were obtained by questionnaire. The data were analyzed by St. Nicolas House Analysis (SNHA) and multiple regression. Results: Vietnamese young adults are taller than their parents (females 3.85cm, males 7.44cm), but do not fully attain height of their German peers. The body height is positively associated with the height of best friend (p < 0.001), the height expectation at age 13 year (p < 0.001), and father’s height (p=0.001). Conclusion: Body height of Vietnamese migrants in Germany reflects competitive growth and strategic growth adjustments. The magnitude of this intergenerational trend supports the concept that human growth depends on SEPE factors. KW - body height KW - regulation of growth KW - migrants KW - Social-Economic-Political-Emotional (SEPE) factors Y1 - 2021 U6 - https://doi.org/10.52905/hbph.v2.12 SN - 2748-9957 IS - 2 PB - Universitätsverlag Potsdam CY - Potsdam ER - TY - JOUR A1 - Kunnus, Kristjan A1 - Zhang, Wenkai A1 - Delcey, Mickael G. A1 - Pinjari, Rahul V. A1 - Miedema, Piter S. A1 - Schreck, Simon A1 - Quevedo, Wilson A1 - Schröder, Henning A1 - Föhlisch, Alexander A1 - Gaffney, Kelly J. A1 - Lundberg, Marcus A1 - Odelius, Michael A1 - Wernet, Philippe T1 - Viewing the Valence Electronic Structure of Ferric and Ferrous Hexacyanide in Solution from the Fe and Cyanide Perspectives JF - The journal of physical chemistry : B, Condensed matter, materials, surfaces, interfaces & biophysical chemistry N2 - The valence-excited states of ferric and ferrous hexacyanide ions in aqueous solution were mapped by resonant inelastic X-ray scattering (RIXS) at the Fe L-2,L-3 and N K edges. Probing of both the central Fe and the ligand N atoms enabled identification of the metal-and ligand-centered excited states, as well as ligand-to-metal and metal-to-ligand charge-transfer excited states. Ab initio calculations utilizing the RASPT2 method were used to simulate the Fe L-2,L-3-edge RIXS spectra and enabled quantification of the covalencies of both occupied and empty orbitals of pi and sigma symmetry. We found that pi back-donation in the ferric complex is smaller than that in the ferrous complex. This is evidenced by the relative amounts of Fe 3d character in the nominally 2 pi CN- molecular orbital of 7% and 9% in ferric and ferrous hexacyanide, respectively. Utilizing the direct sensitivity of Fe L-3-edge RIXS to the Fe 3d character in the occupied molecular orbitals, we also found that the donation interactions are dominated by sigma bonding. The latter was found to be stronger in the ferric complex, with an Fe 3d contribution to the nominally 5 sigma CN- molecular orbitals of 29% compared to 20% in the ferrous complex. These results are consistent with the notion that a higher charge at the central metal atom increases donation and decreases back-donation. Y1 - 2016 U6 - https://doi.org/10.1021/acs.jpcb.6b04751 SN - 1520-6106 VL - 120 SP - 7182 EP - 7194 PB - American Chemical Society CY - Washington ER - TY - BOOK ED - Kutzinski, Vera M. ED - Ette, Ottmar T1 - Views of the cordilleras and monuments of the indigenous peoples of the Americas : a critical edition Y1 - 2012 SN - 0-226-86506-1 PB - University of Chicago Press CY - Chicago ER - TY - JOUR A1 - Rauch, Thomas A1 - Quinet, P. A1 - Hoyer, D. A1 - Werner, K. A1 - Richter, Philipp A1 - Kruk, J. W. A1 - Demleitner, M. T1 - VII. New Kr IV - VII oscillator strengths and an improved spectral analysis of the hot, hydrogen-deficient DO-type white dwarf RE 0503-289 JF - Plant physiology : an international journal devoted to physiology, biochemistry, cellular and molecular biology, biophysics and environmental biology of plants N2 - Context. For the spectral analysis of high-resolution and high signal-to-noise (S/N) spectra of hot stars, state-of-the-art non-local thermodynamic equilibrium (NLTE) model atmospheres are mandatory. These are strongly dependent on the reliability of the atomic data that is used for their calculation. Aims. New Kr IV-VII oscillator strengths for a large number of lines enable us to construct more detailed model atoms for our NLTE model-atmosphere calculations. This enables us to search for additional Kr lines in observed spectra and to improve Kr abundance determinations. Methods. We calculated Kr IV-VII oscillator strengths to consider radiative and collisional bound-bound transitions in detail in our NLTE stellar-atmosphere models for the analysis of Kr lines that are exhibited in high-resolution and high S/N ultraviolet (UV) observations of the hot white dwarf RE 0503-289. Results. We reanalyzed the effective temperature and surface gravity and determined T-eff = 70 000 +/- 2000 K and log (g/cm s(-2)) = 7.5 +/- 0.1. We newly identified ten Kr V lines and one Kr vi line in the spectrum of RE 0503-289. We measured a Kr abundance of 3.3 +/- 0.3 (logarithmic mass fraction). We discovered that the interstellar absorption toward RE 0503-289 has a multi-velocity structure within a radial-velocity interval of -40 km s(-1) < upsilon(rad) < +18 km s(-1). Conclusions. Reliable measurements and calculations of atomic data are a prerequisite for state-of-the-art NLTE stellar-atmosphere modeling. Observed Kr V-VII line profiles in the UV spectrum of the white dwarf RE 0503-289 were simultaneously well reproduced with our newly calculated oscillator strengths. KW - atomic data KW - line: identification KW - stars: abundances KW - stars: individual: RE 0503-289 KW - virtual observatory tools KW - stars: individual: RE 0457-281 Y1 - 2016 U6 - https://doi.org/10.1051/0004-6361/201628131 SN - 1432-0746 VL - 590 PB - EDP Sciences CY - Les Ulis ER - TY - JOUR A1 - Kosman, Admiʾel T1 - Viktor Frankel Gazes out at the world from a concentration camp and teaches us how to utilize that gaze in our own spiritual lives JF - CCAR journal Y1 - 2020 SN - 0007-7976 SN - 1058-8760 VL - Fall 2020/Winter 2021 SP - 131 EP - 142 PB - CCAR Journal, Dept. of Religion CY - Cleveland, Ohio ER - TY - JOUR A1 - Gerecke, Christian A1 - Schneider, Mandy A1 - Scholtka, Bettina T1 - Vimentin promoter methylation analysis is a suitable complement of a gene mutation marker panel for the detection of preneoplastic and neoplastic colonic lesions N2 - Abstracts: Strukturen veraendern - Heilung verbessern. 29. Deutscher Krebskongress. Berlin 24.-27. Februar 201 Y1 - 2010 UR - http://www.karger.com/onk U6 - https://doi.org/10.1159/000290860 SN - 0378-584X ER - TY - JOUR A1 - Herwig, Falk A1 - Schönberner, Detlef A1 - Blöcker, Thomas T1 - Violation of the Core Mass - Luminosity relation for AGB models wich experience the thord dredge-up Y1 - 1999 ER - TY - JOUR A1 - Hartmann, Eddie T1 - Violence BT - constructing an emerging field of sociology JF - International Journal of Conflict and Violence Y1 - 2017 U6 - https://doi.org/10.4119/UNIBI/ijcv.623 SN - 1864-1385 VL - 11 SP - 1 EP - 9 PB - Institute for Interdisciplinary Conflict and Violence Research CY - Bielefeld ER - TY - JOUR A1 - Krahé, Barbara T1 - Violence against women JF - Current opinion in psychology N2 - Violence against women causes suffering and misery to victims and their families and places a heavy burden on societies worldwide. It mostly happens within intimate relationships or between people known to each other. Violence against women is a social construction based on a societal consensus about the roles and rights of men and women. Two prevalent forms of violence against women are physical and sexual victimization by an intimate partner, and sexual victimization outside intimate relationships. Explanations of why men engage in aggressive behavior toward women address different levels, including the macro level of society, the micro level of dyadic interactions, and the individual level of perpetrator characteristics. Prevention efforts are needed that address each of these levels. Y1 - 2017 U6 - https://doi.org/10.1016/j.copsyc.2017.03.017 SN - 2352-250X SN - 2352-2518 VL - 19 SP - 6 EP - 10 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Wiemann, Dirk A1 - Angermüller, Johannes A1 - Bartels, Anke A1 - Stopinska, Agata T1 - Violence of Discourses - Disourses of Violence : an Introduction Y1 - 2005 SN - 3-631-54226-7 ER - TY - GEN A1 - Krahé, Barbara T1 - Violent Media Effects on Aggression: A Commentary from a Cross-Cultural Perspective T2 - Analyses of social issues and public policy N2 - It is argued that, despite differences in cultural norms and practices, the evidence for a link between violent media use and aggression is remarkably consistent across different countries. Along with evidence that different operationalizations of violent media use also converge across countries, these findings strengthen the conclusion that violent media are a risk factor for aggression and validate the psychological explanations for these effects. However, we need comparative studies based on a consistent methodology and a theory-based selection of cultural difference variables to properly examine the potential impact of culture on the association between violent media use and aggression. Y1 - 2016 U6 - https://doi.org/10.1111/asap.12107 SN - 1529-7489 SN - 1530-2415 VL - 16 SP - 439 EP - 442 PB - Wiley-Blackwell CY - Hoboken ER - TY - JOUR A1 - Benson, Lawrence A1 - Makait, Hendrik A1 - Rabl, Tilmann T1 - Viper BT - An Efficient Hybrid PMem-DRAM Key-Value Store JF - Proceedings of the VLDB Endowment N2 - Key-value stores (KVSs) have found wide application in modern software systems. For persistence, their data resides in slow secondary storage, which requires KVSs to employ various techniques to increase their read and write performance from and to the underlying medium. Emerging persistent memory (PMem) technologies offer data persistence at close-to-DRAM speed, making them a promising alternative to classical disk-based storage. However, simply drop-in replacing existing storage with PMem does not yield good results, as block-based access behaves differently in PMem than on disk and ignores PMem's byte addressability, layout, and unique performance characteristics. In this paper, we propose three PMem-specific access patterns and implement them in a hybrid PMem-DRAM KVS called Viper. We employ a DRAM-based hash index and a PMem-aware storage layout to utilize the random-write speed of DRAM and efficient sequential-write performance PMem. Our evaluation shows that Viper significantly outperforms existing KVSs for core KVS operations while providing full data persistence. Moreover, Viper outperforms existing PMem-only, hybrid, and disk-based KVSs by 4-18x for write workloads, while matching or surpassing their get performance. KW - memory Y1 - 2021 U6 - https://doi.org/10.14778/3461535.3461543 SN - 2150-8097 VL - 14 IS - 9 SP - 1544 EP - 1556 PB - Association for Computing Machinery CY - New York ER - TY - JOUR A1 - Kimminich, Eva T1 - Viral Information - The Shift of Meaning and Politics: An Introduction to a Multi-Perspective Analysis of Internet Activities JF - Virality and morphogenesis of right-wing internet populism Y1 - 2018 SN - 978-3-631-76995-9 SP - 9 EP - 28 PB - Lang CY - Berlin ; Bern ; Wien ER - TY - JOUR A1 - Thom, Linda T1 - Virality and Emotionality of the Lügenpresse Phenomenon: A Critical Discourse Analysis of German and French Right-Wing Websites JF - Virality and morphogenesis of right-wing internet populism Y1 - 2018 SN - 978-3-631-76995-9 SP - 57 EP - 67 PB - Lang CY - Berlin ; Bern ; Wien ER - TY - BOOK ED - Kimminich, Eva ED - Erdmann, Julius ED - Dizdarević, Amir T1 - Virality and morphogenesis of right-wing internet populism T3 - Welt - Körper - Sprache ; 13 N2 - Information and its individual interpretations are highly discussed in social media. Their use and misuse is an important subject for cultural and media studies. The theoretical framework of this volume is based on a synopsis of socio-constructivist and semiotic paradigms, which permit insight into ongoing adjustments of the social perception of reality and the thereby changing benchmarks. The assembled micro-studies concentrate primarily on right-wing Internet populism in Germany, France and Italy and allow a more precise idea of the effects the disseminated myths, metaphors and memes can have: Becoming viral, they can have an influence on a society’s semiosphere, i.e.on common sense and social life. Y1 - 2018 SN - 978-3-631-76995-9 PB - Lang CY - Berlin ; Bern ; Wien ER - TY - INPR A1 - Rosamond, Frances A1 - Bardohl, Roswitha A1 - Diehl, Stephan A1 - Geisler, Uwe A1 - Bolduan, Gordon A1 - Lessmoellmann, Annette A1 - Schwill, Andreas A1 - Stege, Ulrike T1 - Virtual extension reaching out to the media become a computer science ambassador T2 - Communications of the ACM / Association for Computing Machinery Y1 - 2011 U6 - https://doi.org/10.1145/1897852.1897880 SN - 0001-0782 VL - 54 IS - 3 SP - 113 EP - 116 PB - Association for Computing Machinery CY - New York ER - TY - GEN A1 - Sianipar, Johannes Harungguan A1 - Willems, Christian A1 - Meinel, Christoph T1 - Virtual machine integrity verification in Crowd-Resourcing Virtual Laboratory T2 - 2018 IEEE 11th Conference on Service-Oriented Computing and Applications (SOCA) N2 - In cloud computing, users are able to use their own operating system (OS) image to run a virtual machine (VM) on a remote host. The virtual machine OS is started by the user using some interfaces provided by a cloud provider in public or private cloud. In peer to peer cloud, the VM is started by the host admin. After the VM is running, the user could get a remote access to the VM to install, configure, and run services. For the security reasons, the user needs to verify the integrity of the running VM, because a malicious host admin could modify the image or even replace the image with a similar image, to be able to get sensitive data from the VM. We propose an approach to verify the integrity of a running VM on a remote host, without using any specific hardware such as Trusted Platform Module (TPM). Our approach is implemented on a Linux platform where the kernel files (vmlinuz and initrd) could be replaced with new files, while the VM is running. kexec is used to reboot the VM with the new kernel files. The new kernel has secret codes that will be used to verify whether the VM was started using the new kernel files. The new kernel is used to further measuring the integrity of the running VM. KW - Virtual Machine KW - Integrity Verification KW - Crowd-Resourcing KW - Cloud Computing Y1 - 2019 SN - 978-1-5386-9133-5 U6 - https://doi.org/10.1109/SOCA.2018.00032 SN - 2163-2871 SP - 169 EP - 176 PB - IEEE CY - New York ER - TY - JOUR A1 - Fromm, Jennifer A1 - Stieglitz, Stefan A1 - Mirbabaie, Milad T1 - Virtual reality in digital education BT - an affordance network perspective on effective use behavior JF - ACM SIGMIS database N2 - Virtual reality promises high potential as an immersive, hands-on learning tool for training 21st-century skills. However, previous research revealed that the mere use of digital tools in higher education does not automatically translate into learning outcomes. Instead, information systems studies emphasized the importance of effective use behavior to achieve technology usage goals. Applying the affordance network approach, we investigated what constitutes effective usage behavior regarding a virtual reality collaboration system in digital education. Therefore, we conducted 18 interviews with students and observations of six course sessions. The results uncover how affordance actualization contributed to the achievement of learning goals. A comparison with findings of previous studies on other information systems (i.e., electronic medical record systems, big data analytics, fitness wearables) allowed us to highlight system-specific differences in effective use behavior. We also demonstrated a clear distinction between concepts surrounding effective use theory facilitating the application of the affordance network approach in information systems research. KW - virtual reality KW - effective use behavior KW - affordance network approach KW - digital education KW - qualitative research Y1 - 2024 U6 - https://doi.org/10.1145/3663682.3663685 SN - 0095-0033 SN - 1532-0936 VL - 55 IS - 2 SP - 14 EP - 41 PB - ACM CY - New York, NY ER - TY - JOUR A1 - Pawassar, Christian Matthias A1 - Tiberius, Victor T1 - Virtual reality in health care BT - Bibliometric analysis JF - JMIR Serious Games N2 - Background: Research into the application of virtual reality technology in the health care sector has rapidly increased, resulting in a large body of research that is difficult to keep up with. Objective: We will provide an overview of the annual publication numbers in this field and the most productive and influential countries, journals, and authors, as well as the most used, most co-occurring, and most recent keywords. Methods: Based on a data set of 356 publications and 20,363 citations derived from Web of Science, we conducted a bibliometric analysis using BibExcel, HistCite, and VOSviewer. Results: The strongest growth in publications occurred in 2020, accounting for 29.49% of all publications so far. The most productive countries are the United States, the United Kingdom, and Spain; the most influential countries are the United States, Canada, and the United Kingdom. The most productive journals are the Journal of Medical Internet Research (JMIR), JMIR Serious Games, and the Games for Health Journal; the most influential journals are Patient Education and Counselling, Medical Education, and Quality of Life Research. The most productive authors are Riva, del Piccolo, and Schwebel; the most influential authors are Finset, del Piccolo, and Eide. The most frequently occurring keywords other than “virtual” and “reality” are “training,” “trial,” and “patients.” The most relevant research themes are communication, education, and novel treatments; the most recent research trends are fitness and exergames. Conclusions: The analysis shows that the field has left its infant state and its specialization is advancing, with a clear focus on patient usability. KW - virtual reality KW - healthcare KW - bibliometric analysis KW - literature review KW - citation analysis KW - VR KW - usability KW - review KW - health care Y1 - 2021 U6 - https://doi.org/10.2196/32721 SN - 2291-9279 VL - 9 SP - 1 EP - 19 PB - JMIR Publications CY - Toronto, Kanada ET - 4 ER - TY - JOUR A1 - Adel, Mustafa A1 - Elbehery, Ali H. A. A1 - Aziz, Sherry K. A1 - Aziz, Ramy K. A1 - Grossart, Hans-Peter A1 - Siam, Rania T1 - Viruses-to-mobile genetic elements skew in the deep Atlantis II brine pool sediments JF - Scientific reports N2 - The central rift of the Red Sea has 25 brine pools with different physical and geochemical characteristics. Atlantis II (ATIID), Discovery Deeps (DD) and Chain Deep (CD) are characterized by high salinity, temperature and metal content. Several studies reported microbial communities in these brine pools, but few studies addressed the brine pool sediments. Therefore, sediment cores were collected from ATIID, DD, CD brine pools and an adjacent brine-influenced site. Sixteen different lithologic sediment sections were subjected to shotgun DNA pyrosequencing to generate 1.47 billion base pairs (1.47 x 10(9) bp). We generated sediment-specific reads and attempted to annotate all reads. We report the phylogenetic and biochemical uniqueness of the deepest ATIID sulfur-rich brine pool sediments. In contrary to all other sediment sections, bacteria dominate the deepest ATIID sulfur-rich brine pool sediments. This decrease in virus-to-bacteria ratio in selected sections and depth coincided with an overrepresentation of mobile genetic elements. Skewing in the composition of viruses-to-mobile genetic elements may uniquely contribute to the distinct microbial consortium in sediments in proximity to hydrothermally active vents of the Red Sea and possibly in their surroundings, through differential horizontal gene transfer. Y1 - 2016 U6 - https://doi.org/10.1038/srep32704 SN - 2045-2322 VL - 6 SP - 8882 EP - 8888 PB - Nature Publ. Group CY - London ER - TY - JOUR A1 - Goychuk, Igor T1 - Viscoelastic subdiffusion in a random Gaussian environment JF - Physical chemistry, chemical physics : a journal of European Chemical Societies N2 - Viscoelastic subdiffusion governed by a fractional Langevin equation is studied numerically in a random Gaussian environment modeled by stationary Gaussian potentials with decaying spatial correlations. This anomalous diffusion is archetypal for living cells, where cytoplasm is known to be viscoelastic and a spatial disorder also naturally emerges. We obtain some first important insights into it within a model one-dimensional study. Two basic types of potential correlations are studied: short-range exponentially decaying and algebraically slow decaying with an infinite correlation length, both for a moderate (several kBT, in the units of thermal energy), and strong (5–10kBT) disorder. For a moderate disorder, it is shown that on the ensemble level viscoelastic subdiffusion can easily overcome the medium's disorder. Asymptotically, it is not distinguishable from the disorder-free subdiffusion. However, a strong scatter in single-trajectory averages is nevertheless seen even for a moderate disorder. It features a weak ergodicity breaking, which occurs on a very long yet transient time scale. Furthermore, for a strong disorder, a very long transient regime of logarithmic, Sinai-type diffusion emerges. It can last longer and be faster in the absolute terms for weakly decaying correlations as compared with the short-range correlations. Residence time distributions in a finite spatial domain are of a generalized log-normal type and are reminiscent also of a stretched exponential distribution. They can be easily confused for power-law distributions in view of the observed weak ergodicity breaking. This suggests a revision of some experimental data and their interpretation. Y1 - 2018 U6 - https://doi.org/10.1039/c8cp05238g SN - 1463-9076 SN - 1463-9084 VL - 20 IS - 37 SP - 24140 EP - 24155 PB - Royal Society of Chemistry CY - Cambridge ER - TY - BOOK A1 - Weian, Liu T1 - Viscosity Solutions of Fully Nonlinea Parabolic Systems T3 - Preprint / Universität Potsdam, Institut für Mathematik, Arbeitsgruppe Partiell Y1 - 2002 SN - 1437-739X PB - Univ. CY - Potsdam ER - TY - JOUR A1 - Salo, H. A1 - Schmidt, Jürgen A1 - Spahn, Frank T1 - Viscous overstability in Saturn's B ring : I. Direct simulations and measurements of transport coefficients Y1 - 2001 ER - TY - JOUR A1 - Schmidt, Jürgen A1 - Salo, H. A1 - Spahn, Frank T1 - Viscous overstability in Saturn's B ring : II. Hydrodynamic theory and comparison to simulations Y1 - 2001 ER - TY - JOUR A1 - Gessinger, Joachim T1 - Visible Sounds and Audible Colours : the Ocular Harpsichord of Louis-Bertrand Castel Y1 - 1996 ER - TY - JOUR A1 - Brosch, Renate T1 - Visible victual : victorian iconographies of dining Y1 - 2003 ER - TY - JOUR A1 - Ugwuja, Chidinma G. A1 - Adelowo, Olawale O. A1 - Ogunlaja, Aemere A1 - Omorogie, Martins O. A1 - Olukanni, Olumide D. A1 - Ikhimiukor, Odion O. A1 - Iermak, Ievgeniia A1 - Kolawole, Gabriel A. A1 - Günter, Christina A1 - Taubert, Andreas A1 - Bodede, Olusola A1 - Moodley, Roshila A1 - Inada, Natalia M. A1 - Camargo, Andrea S.S. de A1 - Unuabonah, Emmanuel Iyayi T1 - Visible-Light-Mediated Photodynamic Water Disinfection @ Bimetallic-Doped Hybrid Clay Nanocomposites JF - ACS applied materials & interfaces N2 - This study reports a new class of photocatalytic hybrid clay nanocomposites prepared from low-cost sources (kaolinite clay and Carica papaya seeds) doped with Zn and Cu salts via a solvothermal process. X-ray diffraction analysis suggests that Cu-doping and Cu/Zn-doping introduce new phases into the crystalline structure of Kaolinite clay, which is linked to the reduced band gap of kaolinite from typically between 4.9 and 8.2 eV to 2.69 eV for Cu-doped and 1.5 eV for Cu/Zn hybrid clay nanocomposites (Nisar, J.; Arhammar, C.; Jamstorp, E.; Ahuja, R. Phys. Rev. B 2011, 84, 075120). In the presence of solar light irradiation, Cu- and Cu/Zn-doped nanocomposites facilitate the electron hole pair separation. This promotes the generation of singlet oxygen which in turn improves the water disinfection efficiencies of these novel nanocomposite materials. The nanocomposite materials were further characterized using high-resolution scanning electron microscopy, fluorimetry, therrnogravimetric analysis, and Raman spectroscopy. The breakthrough times of the nanocomposites for a fixed bed mode of disinfection of water contaminated with 2.32 x 10(7) cfu/mL E. coli ATCC 25922 under solar light irradiation are 25 h for Zn-doped, 30 h for Cu-doped, and 35 h for Cu/Zn-doped nanocomposites. In the presence of multidrug and multimetal resistant strains of E. coli, the breakthrough time decreases significantly. Zn-only doped nanocomposites are not photocatalytically active. In the absence of light, the nanocomposites are still effective in decontaminating water, although less efficient than under solar light irradiation. Electrostatic interaction, metal toxicity, and release of singlet oxygen (only in the Cu-doped and Cu/Zn-doped nanocomposites) are the three disinfection mechanisms by which these nanocomposites disinfect water. A regrowth study indicates the absence of any living E. coli cells in treated water even after 4 days. These data and the long hydraulic times (under gravity) exhibited by these nanocomposites during photodisinfection of water indicate an unusually high potential of these nanocomposites as efficient, affordable, and sustainable point-of-use systems for the disinfection of water in developing countries. KW - disinfection KW - nanocomposite material KW - multidrug-resistant Escherichia coli KW - water KW - reactive oxygen species Y1 - 2019 U6 - https://doi.org/10.1021/acsami.9b01212 SN - 1944-8244 SN - 1944-8252 VL - 11 IS - 28 SP - 25483 EP - 25494 PB - American Chemical Society CY - Washington, DC ER - TY - INPR A1 - Caligiore, Daniele A1 - Fischer, Martin H. T1 - Vision, action and language unified through embodiment T2 - Psychological research : an international journal of perception, attention, memory, and action Y1 - 2013 U6 - https://doi.org/10.1007/s00426-012-0417-0 SN - 0340-0727 VL - 77 IS - 1 SP - 1 EP - 6 PB - Springer CY - Heidelberg ER - TY - JOUR A1 - de Guevara, Berit Bliesemann T1 - visits in zones of conflict and intervention JF - Journal of intervention and statebuilding N2 - This article explores the practice and political significance of politicians’ journeys to conflict zones. It focuses on the German example, looking at field trips to theatres of international intervention as a way of first-hand knowledge in policymaking. Paying tribute to Lisa Smirl and her work on humanitarian spaces, objects and imaginaries and on liminality in aid worker biographies, two connected arguments are developed. First, through the exploration of the routinized practices of politicians’ field trips the article shows how these journeys not only remain confined to the ‘auxiliary space’ of aid/intervention, but that it is furthermore a staged reality of this auxiliary space that most politicians experience on their journeys. The question is then asked, second, what politicians actually experience on their journeys and how their experiences relate to their policy knowledge about conflict and intervention. It is shown that political field trips enable sensory/affectual, liminoid and liminal experiences, which have functions such as authority accumulation, agenda setting, community building, and civilizing domestic politics, while at the same time reinforcing, in most cases, pre-existing conflict and intervention imaginaries. KW - field trips KW - on-site visits KW - battlefield tourism KW - sensory experience KW - affect KW - conflict knowledge KW - spaces of aid KW - liminality KW - German Bundestag KW - parliamentarians KW - German foreign policy KW - Lisa Smirl Y1 - 2016 U6 - https://doi.org/10.1080/17502977.2015.1137394 SN - 1750-2977 SN - 1750-2985 VL - 10 SP - 56 EP - 76 PB - Soil Science Society of America CY - Abingdon ER - TY - JOUR A1 - Rolfs, Martin A1 - Dambacher, Michael A1 - Cavanagh, Patrick T1 - Visual adaptation of the perception of causality JF - Current biology N2 - We easily recover the causal properties of visual events, enabling us to understand and predict changes in the physical world. We see a tennis racket hitting a ball and sense that it caused the ball to fly over the net; we may also have an eerie but equally compelling experience of causality if the streetlights turn on just as we slam our car's door. Both perceptual [1] and cognitive [2] processes have been proposed to explain these spontaneous inferences, but without decisive evidence one way or the other, the question remains wide open [3-8]. Here, we address this long-standing debate using visual adaptation-a powerful tool to uncover neural populations that specialize in the analysis of specific visual features [9-12]. After prolonged viewing of causal collision events called "launches" [1], subsequently viewed events were judged more often as noncausal. These negative aftereffects of exposure to collisions are spatially localized in retinotopic coordinates, the reference frame shared by the retina and visual cortex. They are not explained by adaptation to other stimulus features and reveal visual routines in retinotopic cortex that detect and adapt to cause and effect in simple collision stimuli. Y1 - 2013 U6 - https://doi.org/10.1016/j.cub.2012.12.017 SN - 0960-9822 VL - 23 IS - 3 SP - 250 EP - 254 PB - Cell Press CY - Cambridge ER - TY - CHAP A1 - Vladova, Gergana A1 - Ullrich, André A1 - Sultanow, Eldar A1 - Tobolla, Marinho A1 - Sebrak, Sebastian A1 - Czarnecki, Christian A1 - Brockmann, Carsten ED - Klein, Maike ED - Krupka, Daniel ED - Winter, Cornelia ED - Wohlgemuth, Volker T1 - Visual analytics for knowledge management BT - advantages for organizations and interorganizational teams T2 - Informatik 2023 N2 - The management of knowledge in organizations considers both established long-term processes and cooperation in agile project teams. Since knowledge can be both tacit and explicit, its transfer from the individual to the organizational knowledge base poses a challenge in organizations. This challenge increases when the fluctuation of knowledge carriers is exceptionally high. Especially in large projects in which external consultants are involved, there is a risk that critical, company-relevant knowledge generated in the project will leave the company with the external knowledge carrier and thus be lost. In this paper, we show the advantages of an early warning system for knowledge management to avoid this loss. In particular, the potential of visual analytics in the context of knowledge management systems is presented and discussed. We present a project for the development of a business-critical software system and discuss the first implementations and results. KW - knowledge management KW - visual analytics KW - knowledge transfer KW - teamwork KW - knowledge management system KW - tacit knowledge KW - explicit knowledge Y1 - 2023 SN - 978-3-88579-731-9 U6 - https://doi.org/10.18420/inf2023_187 SN - 1617-5468 SP - 1851 EP - 1870 PB - Gesellschaft für Informatik e.V. (GI) CY - Bonn ER - TY - JOUR A1 - Myachykov, Andriy A1 - Ellis, Rob A1 - Cangelosi, Angelo A1 - Fischer, Martin H. T1 - Visual and linguistic cues to graspable objects JF - Experimental brain research N2 - Two experiments investigated (1) how activation of manual affordances is triggered by visual and linguistic cues to manipulable objects and (2) whether graspable object parts play a special role in this process. Participants pressed a key to categorize manipulable target objects copresented with manipulable distractor objects on a computer screen. Three factors were varied in Experiment 1: (1) the target's and (2) the distractor's handles' orientation congruency with the lateral manual response and (3) the Visual Focus on one of the objects. In Experiment 2, a linguistic cue factor was added to these three factors-participants heard the name of one of the two objects prior to the target display onset. Analysis of participants' motor and oculomotor behaviour confirmed that perceptual and linguistic cues potentiated activation of grasp affordances. Both target- and distractor-related affordance effects were modulated by the presence of visual and linguistic cues. However, a differential visual attention mechanism subserved activation of compatibility effects associated with target and distractor objects. We also registered an independent implicit attention attraction effect from objects' handles, suggesting that graspable parts automatically attract attention during object viewing. This effect was further amplified by visual but not linguistic cues, thus providing initial evidence for a recent hypothesis about differential roles of visual and linguistic information in potentiating stable and variable affordances (Borghi in Language and action in cognitive neuroscience. Psychology Press, London, 2012). KW - Grasp affordances KW - Naming KW - Visual attention KW - Object categorization Y1 - 2013 U6 - https://doi.org/10.1007/s00221-013-3616-z SN - 0014-4819 VL - 229 IS - 4 SP - 545 EP - 559 PB - Springer CY - New York ER - TY - JOUR A1 - Sekerina, Irina A. A1 - Sauermann, Antje T1 - Visual attention and quantifier-spreading in heritage Russian bilinguals JF - Second language research N2 - It is well established in language acquisition research that monolingual children and adult second language learners misinterpret sentences with the universal quantifier every and make quantifier-spreading errors that are attributed to a preference for a match in number between two sets of objects. The present Visual World eye-tracking study tested bilingual heritage Russian-English adults and investigated how they interpret of sentences like Every alligator lies in a bathtub in both languages. Participants performed a sentence-picture verification task while their eye movements were recorded. Pictures showed three pairs of alligators in bathtubs and two extra objects: elephants (Control condition), bathtubs (Overexhaustive condition), or alligators (Underexhaustive condition). Monolingual adults performed at ceiling in all conditions. Heritage language (HL) adults made 20% q-spreading errors, but only in the Overexhaustive condition, and when they made an error they spent more time looking at the two extra bathtubs during the Verb region. We attribute q-spreading in HL speakers to cognitive overload caused by the necessity to integrate conflicting sources of information, i.e. the spoken sentences in their weaker, heritage, language and attention-demanding visual context, that differed with respect to referential salience. KW - eye-tracking KW - heritage language KW - quantifier-spreading KW - Russian KW - universal quantifiers KW - visual attention Y1 - 2015 U6 - https://doi.org/10.1177/0267658314537292 SN - 0267-6583 SN - 1477-0326 VL - 31 IS - 1 SP - 75 EP - 104 PB - Sage Publ. CY - London ER - TY - JOUR A1 - Pearce, Warren A1 - Özkula, Suay M. A1 - Greene, Amanda K. A1 - Teeling, Lauren A1 - Bansard, Jennifer S. A1 - Omena, Janna Joceli A1 - Rabello, Elaine Teixeira T1 - Visual cross-platform analysis JF - Information, Communication and Society: digital methods to research social media images N2 - Analysis of social media using digital methods is a flourishing approach. However, the relatively easy availability of data collected via platform application programming interfaces has arguably led to the predominance of single-platform research of social media. Such research has also privileged the role of text in social media analysis, as a form of data that is more readily gathered and searchable than images. In this paper, we challenge both of these prevailing forms of social media research by outlining a methodology for visual cross-platform analysis (VCPA), defined as the study of still and moving images across two or more social media platforms. Our argument contains three steps. First, we argue that cross-platform analysis addresses a gap in research methods in that it acknowledges the interplay between a social phenomenon under investigation and the medium within which it is being researched, thus illuminating the different affordances and cultures of web platforms. Second, we build on the literature on multimodal communication and platform vernacular to provide a rationale for incorporating the visual into cross-platform analysis. Third, we reflect on an experimental cross-platform analysis of images within social media posts (n = 471,033) used to communicate climate change to advance different modes of macro- and meso-levels of analysis that are natively visual: image-text networks, image plots and composite images. We conclude by assessing the research pathways opened up by VCPA, delineating potential contributions to empirical research and theory and the potential impact on practitioners of social media communication. KW - research methodology KW - visual analysis KW - social media KW - climate change Y1 - 2018 U6 - https://doi.org/10.1080/1369118X.2018.1486871 SN - 1468-4462 SN - 1369-118X VL - 23 IS - 2 SP - 161 EP - 180 PB - Routledge CY - London ER - TY - JOUR A1 - Brosch, Renate T1 - Visual Culture Y1 - 2004 ER - TY - JOUR A1 - Baedke, Jan A1 - Schöttler, Tobias T1 - Visual Metaphors in the Sciences BT - the Case of Epigenetic Landscape Images JF - Journal for General Philosophy of Science N2 - Recent philosophical analyses of the epistemic dimension of images in the sciences show a certain trend in acknowledging potential roles of these images beyond their merely decorative or pedagogical functions. We argue, however, that this new debate has yet paid little attention to a special type of pictures, we call ‘visual metaphor’, and its versatile heuristic potential in organizing data, supporting communication, and guiding research, modeling, and theory formation. Based on a case study of Conrad Hal Waddington’s epigenetic landscape images in biology, we develop a descriptive framework applicable to heuristic roles of various visual metaphors in the sciences. KW - Conrad Hal Waddington KW - Epigenetic landscape KW - Modelling KW - Scientific images KW - Theory formation KW - Visual metaphor Y1 - 2017 U6 - https://doi.org/10.1007/s10838-016-9353-9 SN - 0925-4560 SN - 1572-8587 VL - 48 SP - 173 EP - 194 PB - Springer CY - Dordrecht ER - TY - CHAP A1 - Köster, Antonia A1 - Krasnova, Hanna A1 - Tarafdar, Monideepa T1 - Visual normalization of the thin ideal BT - Instagram use and biased perception of average body weight T2 - Wirtschaftsinformatik 2022 Proceedings: track 21 N2 - Visual Social Networking Sites (SNSs) enable users to present themselves favorably to gain likes and the attention of others. Especially, Instagram is known for its focus on beauty, fitness, fashion, and dietary topics. Although a large body of research reports negative weight-related outcomes of SNS usage (e.g., body dissatisfaction, body image concerns), studies examining how SNS usage relates to these outcomes are scarce. Based on the visual normalization theory, we argue that SNS content facilitates normalization of so-called thin- and fit-ideals, thereby leading to biased perceptions of the average body weight in society. Therefore, this study tests whether Instagram use is associated with perceiving that the average person weighs less. Responses of 181 survey participants confirm that Instagram use is negatively related to average weight perception of both women and men. These findings contribute to the growing body of research on how SNS use relates to negative weight-related outcomes. KW - social networking sites KW - Instragram KW - weight perception KW - visual normalization theory Y1 - 2022 UR - https://aisel.aisnet.org/wi2022/social_media/social/1 PB - AIS Electronic Library (AISeL) CY - [Erscheinungsort nicht ermittelbar] ER - TY - JOUR A1 - Laue, Ralf A1 - Awad, Ahmed Mahmoud Hany Aly T1 - Visual suggestions for improvements in business process diagrams JF - Journal of visual languages and computing N2 - Business processes are commonly modeled using a graphical modeling language. The most widespread notation for this purpose is business process diagrams in the Business Process Modeling Notation (BPMN). In this article, we use the visual query language BPMN-Q for expressing patterns that are related to possible problems in such business process diagrams. We discuss two classes of problems that can be found frequently in real-world models: sequence flow errors and model fragments that can make the model difficult to understand. By using a query processor, a business process modeler is able to identify possible errors in business process diagrams. Moreover, the erroneous parts of the business process diagram can be highlighted when an instance of an error pattern is found. This way, the modeler gets an easy-to-understand feedback in the visual modeling language he or she is familiar with. This is an advantage over current validation methods, which usually lack this kind of intuitive feedback. KW - Business process model KW - Business process diagram KW - BPMN-Q KW - Visualization Y1 - 2011 U6 - https://doi.org/10.1016/j.jvlc.2011.04.003 SN - 1045-926X VL - 22 IS - 5 SP - 385 EP - 399 PB - Elsevier CY - London ER - TY - JOUR A1 - Rolfs, Martin A1 - Ohl, Sven T1 - Visual suppression in the superior colliculus around the time of microsaccades JF - Journal of neurophysiology N2 - Miniature eye movements jitter the retinal image unceasingly, raising the question of how perceptual continuity is achieved during visual fixation. Recent work discovered suppression of visual bursts in the superior colliculus around the time of microsaccades, tiny jerks of the eyes that support visual perception while gaze is fixed. This finding suggests that corollary discharge, supporting visual stability when rapid eye movements drastically shift the retinal image, may also exist for the smallest saccades. Y1 - 2011 U6 - https://doi.org/10.1152/jn.00862.2010 SN - 0022-3077 VL - 105 IS - 1 SP - 1 EP - 3 PB - American Chemical Society CY - Bethesda ER - TY - JOUR A1 - Kleinpeter, Erich A1 - Szatmári, István A1 - Lázár, László A1 - Koch, Andreas A1 - Heydenreich, Matthias A1 - Fulop, Ferenc T1 - Visualization and quantification of anisotropic effects on the 1H NMR spectra of 1,3-oxazino[4,3- alpha]isoquinolines - indirect estimates of steric compression N2 - The anisotropic effects of the phenyl, alpha- and beta-naphthyl moieties in four series of 1,3-oxazino[4,3- a]isoquinolines on the H-1 chemical shifts of the isoquinoline protons were calculated by employing the Nucleus Independent Chemical Shift (NICS) concept and Visualized as anisotropic cones by a through-space NMR shielding grid. The signs and extents of these spatial effects on the H-1 chemical shifts of the isoquinoline protons were compared with the experimental H-1 NMR spectra. The differences between the experimental delta (H-1)/ppm values and the calculated anisotropic effects of the aromatic moieties are discussed in terms of the steric compression that occurs in the Compounds studied. Y1 - 2009 U6 - https://doi.org/10.1016/j.tet.2009.07.038 SN - 0040-4020 ER - TY - JOUR A1 - Kleinpeter, Erich A1 - Koch, Andreas A1 - Seidl, Peter R. T1 - Visualization and quantification of the anisotropic effect of C=C double bonds on 1H NMR spectra of highly congested hydrocarbons-indirect estimates of steric strain N2 - The anisotropic effect of the olefinic C=C double bond has been calculated by employing the NICS (nucleus independent chemical shift) concept and visualized as an anisotropic cone by a through space NMR shielding grid. Sign and size of this spatial effect on 1H chemical shifts of protons in norbornene, exo- and endo-2-methylnorbornenes, and in three highly congested tetracyclic norbornene analogs have been compared with the experimental 1H NMR spectra as far as published. 1H NMR spectra have also been calculated at the HF/6-31G* level of theory to get a full, comparable set of proton chemical shifts. Differences between ;(1H)/ppm and the calculated anisotropic effect of the C=C double bond are discussed in terms of the steric compression that occurs in the compounds studied. Y1 - 2008 UR - http://pubs.acs.org/doi/full/10.1021/jp801063t U6 - https://doi.org/10.1021/Jp801063t ER - TY - JOUR A1 - Witte, Leonie A1 - Linnemannstoens, Karen A1 - Honemann-Capito, Mona A1 - Groß, Julia Christina T1 - Visualization and quantitation of Wg trafficking in the Drosophila wing imaginal epithelium JF - Bio-protocol N2 - Secretory Wnt trafficking can be studied in the polarized epithelial monolayer of Drosophila wing imaginal discs (WID). In this tissue, Wg (Drosophila Wnt-I) is presented on the apical surface of its source cells before being internalized into the endosomal pathway. Long-range Wg secretion and spread depend on secondary secretion from endosomal compartments, but the exact post-endocytic fate of Wg is poorly understood. Here, we summarize and present three protocols for the immunofluorescencebased visualization and quantitation of different pools of intracellular and extracellular Wg in WID: (1) steady-state extracellular Wg; (2) dynamic Wg trafficking inside endosomal compartments; and (3) dynamic Wg release to the cell surface. Using a genetic driver system for gene manipulation specifically at the posterior part of the WID (EnGal4) provides a robust internal control that allows for direct comparison of signal intensities of control and manipulated compartments of the same WID. Therefore, it also circumvents the high degree of staining variability usually associated with whole-tissue samples. In combination with the genetic manipulation of Wg pathway components that is easily feasible in Drosophila, these methods provide a tool-set for the dissection of secretory Wg trafficking and can help us to understand how Wnt proteins travel along endosomal compartments for short-and long-range signal secretion. KW - Wingless/Wnt secretion KW - Morphogen signaling KW - Drosophila wing imaginal disc KW - Recycling assay KW - Extracelluar wingless KW - Imaginal disc dissection Y1 - 2021 U6 - https://doi.org/10.21769/BioProtoc.4040 SN - 2331-8325 VL - 11 IS - 11 PB - bio-protocol.org CY - Sunnyvale, CA ER - TY - JOUR A1 - Stolterfoht, Martin A1 - Wolff, Christian Michael A1 - Marquez, Jose A. A1 - Zhang, Shanshan A1 - Hages, Charles J. A1 - Rothhardt, Daniel A1 - Albrecht, Steve A1 - Burn, Paul L. A1 - Meredith, Paul A1 - Unold, Thomas A1 - Neher, Dieter T1 - Visualization and suppression of interfacial recombination for high-efficiency large-area pin perovskite solar cells JF - Nature Energy N2 - The performance of perovskite solar cells is predominantly limited by non-radiative recombination, either through trap-assisted recombination in the absorber layer or via minority carrier recombination at the perovskite/transport layer interfaces. Here, we use transient and absolute photoluminescence imaging to visualize all non-radiative recombination pathways in planar pintype perovskite solar cells with undoped organic charge transport layers. We find significant quasi-Fermi-level splitting losses (135 meV) in the perovskite bulk, whereas interfacial recombination results in an additional free energy loss of 80 meV at each individual interface, which limits the open-circuit voltage (V-oc) of the complete cell to similar to 1.12 V. Inserting ultrathin interlayers between the perovskite and transport layers leads to a substantial reduction of these interfacial losses at both the p and n contacts. Using this knowledge and approach, we demonstrate reproducible dopant-free 1 cm(2) perovskite solar cells surpassing 20% efficiency (19.83% certified) with stabilized power output, a high V-oc (1.17 V) and record fill factor (>81%). KW - Energy science and technology KW - Solar cells Y1 - 2018 U6 - https://doi.org/10.1038/s41560-018-0219-8 SN - 2058-7546 VL - 3 IS - 10 SP - 847 EP - 854 PB - Nature Publ. Group CY - London ER - TY - BOOK A1 - Morin, Paul T1 - Visualization in the geosciences : course notes T3 - Preprint NLD Y1 - 1995 VL - 19 PB - Univ. CY - Potsdam ER - TY - JOUR A1 - Kuntzsch, Christian T1 - Visualization of data transfer paths JF - Process design for natural scientists: an agile model-driven approach N2 - A workflow for visualizing server connections using the Google Maps API was built in the jABC. It makes use of three basic services: An XML-based IP address geolocation web service, a command line tool and the Static Maps API. The result of the workflow is an URL leading to an image file of a map, showing server connections between a client and a target host. Y1 - 2014 SN - 978-3-662-45005-5 SN - 1865-0929 IS - 500 SP - 140 EP - 148 PB - Springer CY - Berlin ER - TY - THES A1 - Bohnet, Johannes T1 - Visualization of Execution Traces and its Application to Software Maintenance Y1 - 2010 CY - Potsdam ER - TY - JOUR A1 - Kleinpeter, Erich A1 - Koch, Andreas T1 - Visualization of homoaromaticity in cations, neutral molecules and anions by spatial magnetic properties (through space NMR shieldings) - an 1H/13C NMR chemical shift study N2 - Prototypes for homoaromaticity in cations, neutral molecules, and anions are theoretically studied at the MP2 level of theory. For the global minimum structures on the potential energy surface both 1H/13C chemical shifts and spatial magnetic properties as through space NMR shieldings (TSNMRS) were calculated by the GIAO perturbation method. The TSNMRS are visualized as iso-chemical-shielding surfaces (ICSS) of different sign and size. Coincident experimental and computed 1H/13C chemical shifts afforded the possibility to decide from the TSNMRSs at hand on both the existence and the size of homoaromaticity in the molecules studied. Y1 - 2009 UR - http://www.sciencedirect.com/science/journal/00404020 U6 - https://doi.org/10.1016/j.tet.2009.04.063 SN - 0040-4020 ER - TY - JOUR A1 - König, Tobias A1 - Santer, Svetlana T1 - Visualization of surface plasmon interference by imprinting intensity patterns on a photosensitive polymer JF - Nanotechnology N2 - We report on sub-wavelength structuring of photosensitive azo-containing polymer films induced by a surface plasmon interference intensity pattern. The two surface plasmon waves generated at neighboring nano-slits in the metal layer during irradiation interfere constructively, resulting in an intensity pattern with a periodicity three times smaller than the wavelength of the incoming light. The near field pattern interacts with the photosensitive polymer film placed above it, leading to a topography change which follows the intensity pattern exactly, resulting in the formation of surface relief gratings of a size below the diffraction limit. We analyze numerically and experimentally how the depth of the nano-slit alters the interference pattern of surface plasmons and find that the sub-wavelength patterning of the polymer surface could be optimized by modifying the geometry and the size of the nano-slit. Y1 - 2012 U6 - https://doi.org/10.1088/0957-4484/23/48/485304 SN - 0957-4484 VL - 23 IS - 48 PB - IOP Publ. Ltd. CY - Bristol ER - TY - JOUR A1 - Kleinpeter, Erich A1 - Klod, Sabrina A1 - Koch, Andreas T1 - Visualization of through space NMR shieldings of aromatic and anti-aromatic molecules and a simple means to compare and estimate aromaticity N2 - Through space NMR shieldings of aromatic (benzene, mono-substituted and annelated benzenes, ferrocene, [14]- and [18]-annulenes, phenylenes and tetra- to heptahelicene) and anti-aromatic molecules (cyclobutadiene and pentalene) were assessed by ab initio molecular-orbital calculations. Employing the nucleus-independent chemical shifts (NICS) concept, these through space NMR shieldings were visualized as iso-chemical-shielding surfaces (ICSSs) and can be applied quantitatively to determine the stereochemistry of proximal nuclei. In addition, the distances in Å at ICSS values of ±0.1 ppm in-plane and perpendicular-to-center of the aromatic ring system were employed as a simple means to compare and estimate qualitatively the aromaticity of the systems at hand. Y1 - 2007 UR - http://www.sciencedirect.com/science/journal/01661280 U6 - https://doi.org/10.1016/j.theochem.2007.02.049 SN - 0166-1280 ER - TY - JOUR A1 - Koc-Januchta, Marta A1 - Höffler, Tim A1 - Thoma, Gun-Brit A1 - Prechtl, Helmut A1 - Leutner, Detlev T1 - Visualizers versus verbalizers BT - Effects of cognitive style on learning with texts and pictures - An eye-tracking study JF - Computers in human behavior N2 - This study was conducted in order to examine the differences between visualizers and verbalizers in the way they gaze at pictures and texts while learning. Using a collection of questionnaires, college students were classified according to their visual or verbal cognitive style and were asked to learn about two different, in terms of subject and type of knowledge, topics by means of text-picture combinations. Eye-tracking was used to investigate their gaze behavior. The results show that visualizers spent significantly more time inspecting pictures than verbalizers, while verbalizers spent more time inspecting texts. Results also suggest that both visualizers' and verbalizers' way of learning is active but mostly within areas providing the source of information in line with their cognitive style (pictures or text). Verbalizers tended to enter non-informative, irrelevant areas of pictures sooner than visualizers. The comparison of learning outcomes showed that the group of visualizers achieved better results than the group of verbalizers on a comprehension test. KW - Cognitive style KW - Verbalizer KW - Visualizer KW - Eye-tracking KW - Multimedia learning Y1 - 2016 U6 - https://doi.org/10.1016/j.chb.2016.11.028 SN - 0747-5632 SN - 1873-7692 VL - 68 SP - 170 EP - 179 PB - Elsevier CY - Oxford ER - TY - BOOK A1 - Kirsch, Florian A1 - Nienhaus, Marc A1 - Döllner, Jürgen Roland Friedrich T1 - Visualizing design and spatial assembly of interactive CSG T3 - Technische Berichte des Hasso-Plattner-Instituts für Softwaresystemtechnik an der Universität Potsda Y1 - 2005 SN - 3-937786-56-2 SN - 1613-5652 VL - 7 PB - Universitätsverlag Potsdam CY - Potsdam ER - TY - JOUR A1 - Kose, F. A1 - Weckwerth, Wolfram A1 - Linke, Thomas A1 - Fiehn, Oliver T1 - Visualizing plant metabolomic correlation networks using clique-metabolite matrices Y1 - 2001 ER - TY - JOUR A1 - Sun, Fu A1 - Dong, Kang A1 - Osenberg, Markus A1 - Hilger, Andre A1 - Risse, Sebastian A1 - Lu, Yan A1 - Kamm, Paul H. A1 - Klaus, Manuela A1 - Markoetter, Henning A1 - Garcia-Moreno, Francisco A1 - Arlt, Tobias A1 - Manke, Ingo T1 - Visualizing the morphological and compositional evolution of the interface of InLi-anode|thio-LISION electrolyte in an all-solid-state Li-S cell by in operando synchrotron X-ray tomography and energy dispersive diffraction JF - Journal of materials chemistry : A, Materials for energy and sustainability N2 - Dynamic and direct visualization of interfacial evolution is helpful in gaining fundamental knowledge of all-solid-state-lithium battery working/degradation mechanisms and clarifying future research directions for constructing next-generation batteries. Herein, in situ and in operando synchrotron X-ray tomography and energy dispersive diffraction were simultaneously employed to record the morphological and compositional evolution of the interface of InLi-anode|sulfide-solid-electrolyte during battery cycling. Compelling morphological evidence of interfacial degradation during all-solid-state-lithium battery operation has been directly visualized by tomographic measurement. The accompanying energy dispersive diffraction results agree well with the observed morphological deterioration and the recorded electrochemical performance. It is concluded from the current investigation that a fundamental understanding of the phenomena occurring at the solid-solid electrode|electrolyte interface during all-solid-state-lithium battery cycling is critical for future progress in cell performance improvement and may determine its final commercial viability. Y1 - 2018 U6 - https://doi.org/10.1039/c8ta08821g SN - 2050-7488 SN - 2050-7496 VL - 6 IS - 45 SP - 22489 EP - 22496 PB - Royal Society of Chemistry CY - Cambridge ER - TY - JOUR A1 - Yan, Ming T1 - Visually complex foveal words increase the amount of parafoveal information acquired JF - Vision research : an international journal for functional aspects of vision. N2 - This study investigates the effect of foveal load (i.e., processing difficulty of currently fixated words) on parafoveal information processing. Contrary to the commonly accepted view that high foveal load leads to reduced parafoveal processing efficiency, results of the present study showed that increasing foveal visual (but not linguistic) processing load actually increased the amount of parafoveal information acquired, presumably due to the fact that longer fixation duration on the pretarget word provided more time for parafoveal processing of the target word. It is therefore proposed in the present study that foveal linguistic processing load is not the only factor that determines parafoveal processing; preview time (afforded by foveal word visual processing load) may jointly influence parafoveal processing. (C) 2015 Elsevier Ltd. All rights reserved. KW - Reading KW - Eye movements KW - Parafoveal processing KW - Chinese Y1 - 2015 U6 - https://doi.org/10.1016/j.visres.2015.03.025 SN - 0042-6989 SN - 1878-5646 VL - 111 SP - 91 EP - 96 PB - Elsevier CY - Oxford ER - TY - JOUR A1 - Awad, Ahmed Mahmoud Hany Aly A1 - Weidlich, Matthias A1 - Weske, Mathias T1 - Visually specifying compliance rules and explaining their violations for business processes JF - Journal of visual languages and computing N2 - A business process is a set of steps designed to be executed in a certain order to achieve a business value. Such processes are often driven by and documented using process models. Nowadays, process models are also applied to drive process execution. Thus, correctness of business process models is a must. Much of the work has been devoted to check general, domain-independent correctness criteria, such as soundness. However, business processes must also adhere to and show compliance with various regulations and constraints, the so-called compliance requirements. These are domain-dependent requirements. In many situations, verifying compliance on a model level is of great value, since violations can be resolved in an early stage prior to execution. However, this calls for using formal verification techniques, e.g., model checking, that are too complex for business experts to apply. In this paper, we utilize a visual language. BPMN-Q to express compliance requirements visually in a way similar to that used by business experts to build process models. Still, using a pattern based approach, each BPMN-Qgraph has a formal temporal logic expression in computational tree logic (CTL). Moreover, the user is able to express constraints, i.e., compliance rules, regarding control flow and data flow aspects. In order to provide valuable feedback to a user in case of violations, we depend on temporal logic querying approaches as well as BPMN-Q to visually highlight paths in a process model whose execution causes violations. KW - Business process modeling KW - Compliance checking KW - Visual modeling KW - Anti-patterns Y1 - 2011 U6 - https://doi.org/10.1016/j.jvlc.2010.11.002 SN - 1045-926X VL - 22 IS - 1 SP - 30 EP - 55 PB - Elsevier CY - London ER - TY - JOUR A1 - Schweigert, Florian J. A1 - Raila, Jens A1 - Haebel, Sophie T1 - Vitamin A excreted in the urine of canines is associated with a Tamm-Horsfall-like Glycoprotein Y1 - 1998 ER - TY - JOUR A1 - Schweigert, Florian J. A1 - Bok, V. T1 - Vitamin A in blood plasma and urine of dogs is affected by the dietary level of vitamin A Y1 - 2000 ER - TY - JOUR A1 - Henze, Andrea A1 - Raila, Jens A1 - Kempf, Caroline A1 - Reinke, Petra A1 - Sefrin, Anett A1 - Querfeld, Uwe A1 - Schweigert, Florian J. T1 - Vitamin A metabolism is changed in donors after living-kidney transplantation an observational study JF - Lipids in health and disease N2 - Background: The kidneys are essential for the metabolism of vitamin A (retinol) and its transport proteins retinol-binding protein 4 (RBP4) and transthyretin. Little is known about changes in serum concentration after living donor kidney transplantation (LDKT) as a consequence of unilateral nephrectomy; although an association of these parameters with the risk of cardiovascular diseases and insulin resistance has been suggested. Therefore we analyzed the concentration of retinol, RBP4, apoRBP4 and transthyretin in serum of 20 living-kidney donors and respective recipients at baseline as well as 6 weeks and 6 months after LDKT. Results: As a consequence of LDKT, the kidney function of recipients was improved while the kidney function of donors was moderately reduced within 6 weeks after LDKT. With regard to vitamin A metabolism, the recipients revealed higher levels of retinol, RBP4, transthyretin and apoRBP4 before LDKT in comparison to donors. After LDKT, the levels of all four parameters decreased in serum of the recipients, while retinol, RBP4 as well as apoRBP4 serum levels of donors increased and remained increased during the follow-up period of 6 months. Conclusion: LDKT is generally regarded as beneficial for allograft recipients and not particularly detrimental for the donors. However, it could be demonstrated in this study that a moderate reduction of kidney function by unilateral nephrectomy, resulted in an imbalance of components of vitamin A metabolism with a significant increase of retinol and RBP4 and apoRBP4 concentration in serum of donors. KW - Donors KW - glomerular filtration rate KW - kidney transplantation KW - retinol KW - retinol-binding protein 4 KW - transthyretin Y1 - 2011 U6 - https://doi.org/10.1186/1476-511X-10-231 SN - 1476-511X VL - 10 IS - 23 PB - BioMed Central CY - London ER - TY - JOUR A1 - Schweigert, Florian J. A1 - Klinger, Jeannine A1 - Hurtienne, Andrea A1 - Zunft, Hans-Joachim Franz T1 - Vitamin A, carotenoid and vitamin E plasma concentrations in children from Laos in relation to sex and growth failure Y1 - 2003 UR - http://www.nutritionj.com/content/2/1/17 ER - TY - JOUR A1 - Danquah, Ina A1 - Dobrucky, C. Lydia A1 - Frank, Laura K. A1 - Henze, Andrea A1 - Amoako, Yaw A. A1 - Bedu-Addo, George A1 - Raila, Jens A1 - Schulze, Matthias Bernd A1 - Mockenhaupt, Frank P. A1 - Schweigert, Florian J. T1 - Vitamin A: potential misclassification of vitamin A status among patients with type 2 diabetes and hypertension in urban Ghana JF - The American journal of clinical nutrition : a publication of the American Society for Nutrition, Inc. N2 - Background: Sub-Saharan Africa is facing a double burden of malnutrition: vitamin A deficiency (VAD) prevails, whereas the nutrition-related chronic conditions type 2 diabetes (T2D) and hypertension are emerging. Serum retinol a VAD marker increases in kidney disease and decreases in inflammation, which can partly be attributed to alterations in the vitamin A transport proteins retinol-binding protein 4 (RBP4) and prealbumin. Kidney dysfunction and inflammation commonly accompany T2D and hypertension. Objective: Among urban Ghanaians, we investigated the associations of T2D and hypertension with serum retinol as well as the importance of kidney function and inflammation in this regard. Design: A hospital-based, case-control study in individuals for risk factors of T2D, hypertension, or both was conducted in Kumasi, Ghana (328 controls, 197 with T2D, 354 with hypertension, and 340 with T2D plus hypertension). In 1219 blood samples, serum retinol, RBP4, and prealbumin were measured. Urinary albumin and estimated glomerular filtration rate (eGFR) defined kidney function. C-reactive protein (CRP) >5 mg/L indicated inflammation. We identified associations of T2D and hypertension with retinol by linear regression and calculated the contribution of RBP4, prealbumin, urinary albumin, eGFR, and CRP to these associations as the percentages of the explained variance of retinol. Results: VAD (retinol <1.05 mu mol/L) was present in 10% of this predominantly female, middle-aged, overweight, and deprived population. Hypertension, but not T2D, was positively associated with retinol (beta: 0.12; 95% CI: 0.08, 0,17), adjusted for age, sex, socioeconomic factors, anthropometric measurements, and lifestyle. In addition to RBP4 (72%) and prealbumin (22%), the effect of increased retinol on individuals with hypertension was mainly attributed to impaired kidney function (eGFR: 30%; urinary albumin: 5%) but not to inflammation. Conclusions: In patients with hypertension, VAD might be underestimated because of increased serum retinol in the context of kidney dysfunction. Thus, the interpretation of serum retinol in sub-Saharan Africa should account for hypertension status. KW - hypertension KW - inflammation KW - kidney dysfunction KW - type 2 diabetes KW - vitamin A deficiency Y1 - 2015 U6 - https://doi.org/10.3945/ajcn.114.101345 SN - 0002-9165 SN - 1938-3207 VL - 102 IS - 1 SP - 207 EP - 214 PB - American Society for Nutrition, Inc. CY - Bethesda ER - TY - JOUR A1 - Gerecke, Christian A1 - Schumacher, Fabian A1 - Berndzen, Alide A1 - Homann, Thomas A1 - Kleuser, Burkhard T1 - Vitamin C in combination with inhibition of mutant IDH1 synergistically activates TET enzymes and epigenetically modulates gene silencing in colon cancer cells JF - Epigenetics : the official journal of the DNA Methylation Society N2 - Mutations in the enzyme isocitrate dehydrogenase 1 (IDH1) lead to metabolic alterations and a sustained formation of 2-hydroxyglutarate (2-HG). 2-HG is an oncometabolite as it inhibits the activity of alpha-ketoglutarate-dependent dioxygenases such as ten-eleven translocation (TET) enzymes. Inhibitors of mutant IDH enzymes, like ML309, are currently tested in order to lower the levels of 2-HG. Vitamin C (VC) is an inducer of TET enzymes. To test a new therapeutic avenue of synergistic effects, the anti-neoplastic activity of inhibition of mutant IDH1 via ML309 in the presence of VC was investigated in the colon cancer cell line HCT116 IDH1(R132H/+) (harbouring a mutated IDH1 allele) and the parental cells HCT116 IDH1(+/+) (wild type IDH1). Measurement of the oncometabolite indicated a 56-fold higher content of 2-HG in mutated cells compared to wild type cells. A significant reduction of 2-HG was observed in mutated cells after treatment with ML 309, whereas VC produced only minimally changes of the oncometabolite. However, combinatorial treatment with both, ML309 and VC, in mutated cells induced pronounced reduction of 2-HG leading to levels comparable to those in wild type cells. The decreased level of 2-HG in mutated cells after combinatorial treatment was accompanied by an enhanced global DNA hydroxymethylation and an increased gene expression of certain tumour suppressors. Moreover, mutated cells showed an increased percentage of apoptotic cells after treatment with non-cytotoxic concentrations of ML309 and VC. These results suggest that combinatorial therapy is of interest for further investigation to rescue TET activity and treatment of IDH1/2 mutated cancers. KW - Vitamin C KW - epigenetics KW - IDH1 KW - TET KW - cancer cells Y1 - 2019 U6 - https://doi.org/10.1080/15592294.2019.1666652 SN - 1559-2294 SN - 1559-2308 VL - 15 IS - 3 SP - 307 EP - 322 PB - Taylor & Francis Group CY - Philadelphia ER - TY - INPR A1 - Hocher, Berthold A1 - Reichetzeder, Christoph T1 - Vitamin D and cardiovascular risk in postmenopausal women how to translate preclinical evidence into benefit for patients T2 - Kidney international : official journal of the International Society of Nephrology N2 - Preclinical work indicates that calcitriol restores vascular function by normalizing the endothelial expression of cyclooxygenase-2 and thromboxane-prostanoid receptors in conditions of estrogen deficiency and thus prevents the thromboxane-prostanoid receptor activation-induced inhibition of nitric oxide synthase. Since endothelial dysfunction is a key factor in the pathogenesis of cardiovascular diseases, this finding may have an important translational impact. It provides a clear rationale to use endothelial function in clinical trials aiming to find the optimal dose of vitamin D for the prevention of cardiovascular events in postmenopausal women. Y1 - 2013 U6 - https://doi.org/10.1038/ki.2013.139 SN - 0085-2538 VL - 84 IS - 1 SP - 9 EP - 11 PB - Nature Publ. Group CY - New York ER - TY - THES A1 - Schmiedchen, Bettina T1 - Vitamin D and its linkage between chronic kidney disease and cardiovascular integrity Y1 - 2014 ER - TY - JOUR A1 - Drechsler, Christiane A1 - Pilz, Stefan A1 - Obermayer-Pietsch, Barbara A1 - Verduijn, Marion A1 - Tomaschitz, Andreas A1 - Krane, Vera A1 - Espe, Katharina A1 - Dekker, Friedo A1 - Brandenburg, Vincent A1 - Maerz, Winfried A1 - Ritz, Eberhard A1 - Wanner, Christoph T1 - Vitamin D deficiency is associated with sudden cardiac death, combined cardiovascular events, and mortality in haemodialysis patients N2 - Dialysis patients experience an excess mortality, predominantly of sudden cardiac death (SCD). Accumulating evidence suggests a role of vitamin D for myocardial and overall health. This study investigated the impact of vitamin D status on cardiovascular outcomes and fatal infections in haemodialysis patients. 25-hydroxyvitamin D [25(OH)D] was measured in 1108 diabetic haemodialysis patients who participated in the German Diabetes and Dialysis Study and were followed up for a median of 4 years. By Cox regression analyses, we determined hazard ratios (HR) for pre-specified, adjudicated endpoints according to baseline 25(OH)D levels: SCD (n = 146), myocardial infarction (MI, n = 174), stroke (n = 89), cardiovascular events (CVE, n = 414), death due to heart failure (n = 37), fatal infection (n = 111), and all- cause mortality (n = 545). Patients had a mean age of 66 +/- 8 years (54% male) and median 25(OH)D of 39 nmol/L (interquartile range: 28-55). Patients with severe vitamin D deficiency [25(OH)D of < 25 nmol/L] had a 3-fold higher risk of SCD compared with those with sufficient 25(OH)D levels > 75 nmol/L [HR: 2.99, 95% confidence interval (CI): 1.39- 6.40]. Furthermore, CVE and all-cause mortality were strongly increased (HR: 1.78, 95% CI: 1.18-2.69, and HR: 1.74, 95% CI: 1.22-2.47, respectively), all persisting in multivariate models. There were borderline non-significant associations with stroke and fatal infection while MI and deaths due to heart failure were not meaningfully affected. Severe vitamin D deficiency was strongly associated with SCD, CVE, and mortality, and there were borderline associations with stroke and fatal infection. Whether vitamin D supplementation decreases adverse outcomes requires further evaluation. Y1 - 2010 UR - http://eurheartj.oxfordjournals.org/ U6 - https://doi.org/10.1093/eurheartj/ehq246 SN - 0195-668X ER - TY - JOUR A1 - Hocher, Berthold A1 - Groen, Hans Jürgen A1 - Schumann, Claudia A1 - Tsuprykov, Oleg A1 - Seifert, Susanne A1 - Hitzler, Walter E. A1 - Armbruster, Franz Paul T1 - Vitamin D status from dried capillary blood samples JF - Clinical laboratory : the peer reviewed journal for clinical laboratories and laboratories related to blood transfusion N2 - Background: Given the huge impact of vitamin D deficiency on a broad spectrum of diseases such as rickets, osteoporosis, mineral bone disease-vascular calcification syndrome, infectious diseases, but also several types of cancer and CNS diseases, reliable and simple methods to analyze the vitamin D status are urgently needed. Methods: We developed an easy technique to determine the 25-OH vitamin D status from dried blood samples on filter paper. This allows determination of the 25-OH vitamin D status independently of venous blood taking, since only sampling of capillary blood is required for this new method. We compared the results of vitamin D measurements from venous blood of 96 healthy blood donors with those from capillary blood taken from the same patients at the same time. The capillary blood was dried on filter paper using the D-Vital ID dry-blood collection system. Results: 25-OH vitamin D concentration data from extracted dried capillary blood filters correlated very well with data obtained after direct measurement of venous blood samples of the same blood donor (R: 0.7936; p<0.0001). The correlation was linear over the whole range of 25-OH vitamin D concentrations seen in this study. A Bland-Altman plot revealed good agreement between both tests. Conclusions: The D-Vital ID dry-blood collection system showed an excellent performance as compared to the classical way of 25-OH vitamin D measurement from venous blood. This new technique will facilitate easy and reliable measurement for vitamin D status, in particular, in rural or isolated areas, developing countries, and field studies. KW - 25-OH vitamin D KW - filter paper KW - capillary blood KW - new analysis method Y1 - 2012 U6 - https://doi.org/10.7754/Clin.Lab.2012.120429 SN - 1433-6510 VL - 58 IS - 7-8 SP - 851 EP - 855 PB - Clin Lab Publ., Verl. Klinisches Labor CY - Heidelberg ER - TY - JOUR A1 - Karuwanarint, Piyaporn A1 - Phonrat, Benjaluck A1 - Tungtrongchitr, Anchalee A1 - Suriyaprom, Kanjana A1 - Chuengsamarn, Somlak A1 - Schweigert, Florian J. A1 - Tungtrongchitr, Rungsunn T1 - Vitamin D-binding protein and its polymorphisms as a predictor for metabolic syndrome JF - Biomarkers in medicine N2 - Aim: To investigate the relationship of vitamin D-binding protein (GC) and genetic variation of GC (rs4588, rs7041 and rs2282679) with metabolic syndrome (MetS) in the Thai population. Materials & methods: GCglobulin concentrations were measured by quantitative western blot analysis in 401 adults. All participants were genotyped using TaqMan allelic discrimination assays. Results: GC-globulin levels were significatly lower in MetS subjects than in control subjects, in which significant negative correlations of GC-globulin levels with systolic blood pressure, glucose and age were found. Male participants who carried the GT genotype for rs4588 showed an increased risk of MetS compared with the GG wild-type (odds ratio: 3.25; p = 0.004). Conclusion: GC-globulin concentrations and variation in GC rs4588 were supported as a risk factor for MetS in Thais. KW - GC gene KW - GC-globulin KW - metabolic syndrome KW - polymorphism KW - Thai population KW - vitamin D-binding protein Y1 - 2018 U6 - https://doi.org/10.2217/bmm-2018-0029 SN - 1752-0363 SN - 1752-0371 VL - 12 IS - 5 SP - 465 EP - 473 PB - Future Medicine CY - London ER - TY - JOUR A1 - Mittal, Rupal A1 - Porcas, Richard A1 - Wucknitz, Olaf A1 - Biggs, Andy D. A1 - Browne, Ian W. A. T1 - VLBI phase-reference observations of the gravitational lens JVAS B0218+357 N2 - We present the results of phase-referenced VLBA+Effelsberg observations at five frequencies of the double-image gravitational lens WAS B0218+357, made to establish the precise registration of the A and B lensed image positions. The motivation behind these observations is to investigate the anomalous variation of the image flux-density ratio (A[B) with frequency - this ratio changes by almost a factor of two over a frequency range from 1.65 GHz to 15.35 GHz. We investigate whether frequency dependent image positions, combined with a magnification gradient across the image field, could give rise to the anomaly. Our observations confirm the variation of image flux-density ratio with frequency. The results from Our phase-reference astrometry, taken together with the lens mass model of Wucknitz et al. (2004, MNRAS, 349, 14), show that shifts of the image peaks and centroids are too small to account for the observed frequency- dependent ratio Y1 - 2006 UR - http://www.edpsciences.org/docinfos/AAS/ U6 - https://doi.org/10.1051/0004-6361:20054012 ER - TY - JOUR A1 - Bonnet, Philippe A1 - Dong, Xin Luna A1 - Naumann, Felix A1 - Tözün, Pınar T1 - VLDB 2021 BT - Designing a hybrid conference JF - SIGMOD record N2 - The 47th International Conference on Very Large Databases (VLDB'21) was held on August 16-20, 2021 as a hybrid conference. It attracted 180 in-person attendees in Copenhagen and 840 remote attendees. In this paper, we describe our key decisions as general chairs and program committee chairs and share the lessons we learned. Y1 - 2021 U6 - https://doi.org/10.1145/3516431.3516447 SN - 0163-5808 SN - 1943-5835 VL - 50 IS - 4 SP - 50 EP - 53 PB - Association for Computing Machinery CY - New York ER - TY - JOUR A1 - Westphal, Florian A1 - Axelsson, Stefan A1 - Neuhaus, Christian A1 - Polze, Andreas T1 - VMI-PL: A monitoring language for virtual platforms using virtual machine introspection JF - Digital Investigation : the international journal of digital forensics & incident response N2 - With the growth of virtualization and cloud computing, more and more forensic investigations rely on being able to perform live forensics on a virtual machine using virtual machine introspection (VMI). Inspecting a virtual machine through its hypervisor enables investigation without risking contamination of the evidence, crashing the computer, etc. To further access to these techniques for the investigator/researcher we have developed a new VMI monitoring language. This language is based on a review of the most commonly used VMI-techniques to date, and it enables the user to monitor the virtual machine's memory, events and data streams. A prototype implementation of our monitoring system was implemented in KVM, though implementation on any hypervisor that uses the common x86 virtualization hardware assistance support should be straightforward. Our prototype outperforms the proprietary VMWare VProbes in many cases, with a maximum performance loss of 18% for a realistic test case, which we consider acceptable. Our implementation is freely available under a liberal software distribution license. (C) 2014 Digital Forensics Research Workshop. Published by Elsevier Ltd. All rights reserved. KW - Virtualization KW - Security KW - Monitoring language KW - Live forensics KW - Introspection KW - Classification Y1 - 2014 U6 - https://doi.org/10.1016/j.diin.2014.05.016 SN - 1742-2876 SN - 1873-202X VL - 11 SP - S85 EP - S94 PB - Elsevier CY - Oxford ER - TY - JOUR A1 - Tenenboim, Hezi A1 - Smirnova, Julia A1 - Willmitzer, Lothar A1 - Steup, Martin A1 - Brotman, Yariv T1 - VMP1-deficient Chlamydomonas exhibits severely aberrant cell morphology and disrupted cytokinesies JF - BMC plant biology N2 - Background: The versatile Vacuole Membrane Protein 1 (VMP1) has been previously investigated in six species. It has been shown to be essential in macroautophagy, where it takes part in autophagy initiation. In addition, VMP1 has been implicated in organellar biogenesis; endo-, exo- and phagocytosis, and protein secretion; apoptosis; and cell adhesion. These roles underly its proven involvement in pancreatitis, diabetes and cancer in humans. Results: In this study we analyzed a VMP1 homologue from the green alga Chlamydomonas reinhardtii. CrVMP1 knockdown lines showed severe phenotypes, mainly affecting cell division as well as the morphology of cells and organelles. We also provide several pieces of evidence for its involvement in macroautophagy. KW - VMP1 KW - Autophagy KW - Cytokinesis Y1 - 2014 U6 - https://doi.org/10.1186/1471-2229-14-121 SN - 1471-2229 VL - 14 PB - BioMed Central CY - London ER - TY - JOUR A1 - Rubertus, Elina A1 - Noiray, Aude T1 - Vocalic activation width decreases across childhood BT - Evidence from carryover coarticulation JF - Laboratory Phonology N2 - This study is the first to use kinematic data to assess lingual carryover coarticulation in children. We investigated whether the developmental decrease previously attested in anticipatory coarticulation, as well as the relation between coarticulatory degree and the consonantal context, also characterize carryover coarticulation. Sixty-two children and 13 adults, all native speakers of German, were recruited according to five age cohorts: three-year-olds, four-year-olds, five-year-olds, seven-year-olds, and adults. Tongue movements during the production of ə.CV.Cə utterances (C = /b, d, g/, V = /i, y, e, a, o, u/) were recorded with ultrasound. We measured vowel-induced horizontal displacement of the tongue dorsum within the last syllable and compared the resulting coarticulatory patterns between age cohorts and consonantal contexts. Results indicate that the degree of vocalic carryover coarticulation decreases with age. Vocalic prominence within an utterance as well as its change across childhood depended on the postvocalic consonant’s articulatory demands for the tongue dorsum (i.e., its coarticulatory resistance): Low resistant /b/ and /g/ allowed for more vocalic perseveration and a continuous decrease, while the highly resistant /d/ displayed lower coarticulation degrees and discontinuous effects. These findings parallel those in anticipation suggesting a similar organization of anticipatory and carryover coarticulation. Implications for theories of speech production are discussed. KW - language acquisition KW - coarticulation KW - carryover effects KW - vowels KW - gestural organization KW - speech motor control Y1 - 2020 U6 - https://doi.org/10.5334/labphon.228 SN - 1868-6346 SN - 1868-6354 VL - 11 IS - 1 PB - de Gruyter Mouton CY - Berlin, New York ER - TY - JOUR A1 - Hansch, Petra A1 - Wallschläger, Hans-Dieter T1 - Vocalisation of curassows (Cracidae) Y1 - 1996 ER - TY - JOUR A1 - Vock, Miriam A1 - Köller, Olaf A1 - Nagy, Gabriel T1 - Vocational interests of intellectually gifted and highly achieving young adults JF - British journal of educational psychology N2 - Background.Vocational interests play a central role in the vocational decision-making process and are decisive for the later job satisfaction and vocational success. Based on Ackerman's (1996) notion of trait complexes, specific interest profiles of gifted high-school graduates can be expected. Aims.Vocational interests of gifted and highly achieving adolescents were compared to those of their less intelligent/achieving peers according to Holland's (1997) RIASEC model. Further, the impact of intelligence and achievement on interests were analysed while statistically controlling for potentially influencing variables. Changes in interests over time were investigated. Sample.N= 4,694 German students (age: M= 19.5, SD= .80; 54.6% females) participated in the study (TOSCA; Koller, Watermann, Trautwein, & Ludtke, 2004). Method. Interests were assessed in participants' final year at school and again 2 years later (N= 2,318). Results.Gifted participants reported stronger investigative and realistic interests, but lower social interests than less intelligent participants. Highly achieving participants reported higher investigative and (in wave 2) higher artistic interests. Considerable gender differences were found: gifted girls had a flat interest profile, while gifted boys had pronounced realistic and investigative and low social interests. Multilevel multiple regression analyses predicting interests by intelligence and school achievement revealed stable interest profiles. Beyond a strong gender effect, intelligence and school achievement each contributed substantially to the prediction of vocational interests. Conclusions.At the time around graduation from high school, gifted young adults show stable interest profiles, which strongly differ between gender and intelligence groups. These differences are relevant for programmes for the gifted and for vocational counselling. Y1 - 2013 U6 - https://doi.org/10.1111/j.2044-8279.2011.02063.x SN - 0007-0998 VL - 83 IS - 2 SP - 305 EP - 328 PB - Wiley-Blackwell CY - Hoboken ER - TY - GEN A1 - Salzwedel, Annett A1 - Völler, Heinz A1 - Reibis, Rona Katharina T1 - Vocational reintegration in coronary heart disease patients - the holistic approach of the WHO biopsychosocial concept T2 - European journal of preventive cardiology : the official ESC journal for primary & secondary cardiovascular prevention, rehabilitation and sports cardiology Y1 - 2019 U6 - https://doi.org/10.1177/2047487319850699 SN - 2047-4873 SN - 2047-4881 VL - 26 IS - 13 SP - 1383 EP - 1385 PB - Sage Publ. CY - London ER - TY - JOUR A1 - Hecker, Pascal A1 - Steckhan, Nico A1 - Eyben, Florian A1 - Schuller, Björn Wolfgang A1 - Arnrich, Bert T1 - Voice Analysis for Neurological Disorder Recognition – A Systematic Review and Perspective on Emerging Trends JF - Frontiers in Digital Health N2 - Quantifying neurological disorders from voice is a rapidly growing field of research and holds promise for unobtrusive and large-scale disorder monitoring. The data recording setup and data analysis pipelines are both crucial aspects to effectively obtain relevant information from participants. Therefore, we performed a systematic review to provide a high-level overview of practices across various neurological disorders and highlight emerging trends. PRISMA-based literature searches were conducted through PubMed, Web of Science, and IEEE Xplore to identify publications in which original (i.e., newly recorded) datasets were collected. Disorders of interest were psychiatric as well as neurodegenerative disorders, such as bipolar disorder, depression, and stress, as well as amyotrophic lateral sclerosis amyotrophic lateral sclerosis, Alzheimer's, and Parkinson's disease, and speech impairments (aphasia, dysarthria, and dysphonia). Of the 43 retrieved studies, Parkinson's disease is represented most prominently with 19 discovered datasets. Free speech and read speech tasks are most commonly used across disorders. Besides popular feature extraction toolkits, many studies utilise custom-built feature sets. Correlations of acoustic features with psychiatric and neurodegenerative disorders are presented. In terms of analysis, statistical analysis for significance of individual features is commonly used, as well as predictive modeling approaches, especially with support vector machines and a small number of artificial neural networks. An emerging trend and recommendation for future studies is to collect data in everyday life to facilitate longitudinal data collection and to capture the behavior of participants more naturally. Another emerging trend is to record additional modalities to voice, which can potentially increase analytical performance. KW - neurological disorders KW - voice KW - speech KW - everyday life KW - multiple modalities KW - machine learning KW - disorder recognition Y1 - 2022 U6 - https://doi.org/10.3389/fdgth.2022.842301 SN - 2673-253X PB - Frontiers Media SA CY - Lausanne, Schweiz ER - TY - JOUR A1 - Tristram, Hildegard L. C. T1 - Voice and Poetry in Dylan Thomas Y1 - 1996 ER - TY - JOUR A1 - Mumm, Rebekka A1 - Hermanussen, Michael A1 - Scheffler, Christiane T1 - voice break as the marker of biological age JF - Acta paediatrica : nurturing the child N2 - Aim: We aimed to develop the first references for body height, body weight and body mass index (BMI) for boys based on the individual developmental tempo with respect to their voice break status. Methods: We re-analysed data from the German Health Interview and Examination Survey for Children and Adolescents (KiGGS study) on body height, body weight and body mass index based on the voice break, or mutation, in 3956 boys aged 10-17 years. We used the LMS method to construct smoothed references centiles for the studied variables in premutational, mutational and postmutational boys. Results: Body height, body weight and BMI differed significantly (p < 0.001) between the different stages of voice break. On average, boys were 5.9 cm taller, 5.8 kg heavier and had a 0.7 kg/m(2) higher BMI with every higher stage of voice break. Currently used growth references for chronological age in comparison with maturity-related references led to an average of 5.4% of boys being falsely classified as overweight. KW - Body mass index KW - Developmental tempo KW - Growth reference values KW - Overweight KW - Voice break Y1 - 2016 U6 - https://doi.org/10.1111/apa.13488 SN - 0803-5253 SN - 1651-2227 VL - 105 SP - e459 EP - e463 PB - Wiley-Blackwell CY - Hoboken ER - TY - JOUR A1 - Ermolina, Alena A1 - Tiberius, Victor T1 - Voice-controlled intelligent personal assistants in health care BT - International Delphi Study JF - Journal of medical internet research : international scientific journal for medical research, information and communication on the internet ; JMIR N2 - Background: Voice-controlled intelligent personal assistants (VIPAs), such as Amazon Echo and Google Home, involve artificial intelligence-powered algorithms designed to simulate humans. Their hands-free interface and growing capabilities have a wide range of applications in health care, covering off-clinic education, health monitoring, and communication. However, conflicting factors, such as patient safety and privacy concerns, make it difficult to foresee the further development of VIPAs in health care.
Objective: This study aimed to develop a plausible scenario for the further development of VIPAs in health care to support decision making regarding the procurement of VIPAs in health care organizations. Methods: We conducted a two-stage Delphi study with an internationally recruited panel consisting of voice assistant experts, medical professionals, and representatives of academia, governmental health authorities, and nonprofit health associations having expertise with voice technology. Twenty projections were formulated and evaluated by the panelists. Descriptive statistics were used to derive the desired scenario.
Results: The panelists expect VIPAs to be able to provide solid medical advice based on patients' personal health information and to have human-like conversations. However, in the short term, voice assistants might neither provide frustration-free user experience nor outperform or replace humans in health care. With a high level of consensus, the experts agreed with the potential of VIPAs to support elderly people and be widely used as anamnesis, informational, self-therapy, and communication tools by patients and health care professionals. Although users' and governments' privacy concerns are not expected to decrease in the near future, the panelists believe that strict regulations capable of preventing VIPAs from providing medical help services will not be imposed.
Conclusions: According to the surveyed experts, VIPAs will show notable technological development and gain more user trust in the near future, resulting in widespread application in health care. However, voice assistants are expected to solely support health care professionals in their daily operations and will not be able to outperform or replace medical staff. KW - Delphi study KW - medical informatics KW - voice-controlled intelligent personal KW - assistants KW - internet of things KW - smart devices Y1 - 2020 U6 - https://doi.org/10.2196/25312 SN - 1438-8871 VL - 23 IS - 4 PB - Healthcare World CY - Richmond, Va. ER - TY - JOUR A1 - Gerhard, Reimund T1 - Voided polymer electrets : new materials, new challenges, new chances Y1 - 2002 SN - 0-7803-7560-2 ER - TY - JOUR A1 - Wegener, Michael A1 - Bergweiler, Steffen A1 - Wirges, Werner A1 - Pucher, Andreas A1 - Gerhard, Reimund T1 - Voided space-charge electrets : piezoelectric transducer materials for electro-acoustic applications Y1 - 2004 ER - TY - THES A1 - Arbabi-Bidgoli, Sepehr T1 - Voids in the Large Scale Structure of the Universe Y1 - 2003 ER - TY - JOUR A1 - Freundt, A. A1 - Grevemeyer, I. A1 - Rabbel, W. A1 - Hansteen, T. H. A1 - Hensen, C. A1 - Wehrmann, H. A1 - Kutterolf, S. A1 - Halama, Ralf A1 - Frische, M. T1 - Volatile (H2O, CO2, Cl, S) budget of the Central American subduction zone JF - International journal of earth sciences N2 - After more than a decade of multidisciplinary studies of the Central American subduction zone mainly in the framework of two large research programmes, the US MARGINS program and the German Collaborative Research Center SFB 574, we here review and interpret the data pertinent to quantify the cycling of mineral-bound volatiles (H2O, CO2, Cl, S) through this subduction system. For input-flux calculations, we divide the Middle America Trench into four segments differing in convergence rate and slab lithological profiles, use the latest evidence for mantle serpentinization of the Cocos slab approaching the trench, and for the first time explicitly include subduction erosion of forearc basement. Resulting input fluxes are 40-62 (53) Tg/Ma/m H2O, 7.8-11.4 (9.3) Tg/Ma/m CO2, 1.3-1.9 (1.6) Tg/Ma/m Cl, and 1.3-2.1 (1.6) Tg/Ma/m S (bracketed are mean values for entire trench length). Output by cold seeps on the forearc amounts to 0.625-1.25 Tg/Ma/m H2O partly derived from the slab sediments as determined by geochemical analyses of fluids and carbonates. The major volatile output occurs at the Central American volcanic arc that is divided into ten arc segments by dextral strike-slip tectonics. Based on volcanic edifice and widespread tephra volumes as well as calculated parental magma masses needed to form observed evolved compositions, we determine long-term (10(5) years) average magma and K2O fluxes for each of the ten segments as 32-242 (106) Tg/Ma/m magma and 0.28-2.91 (1.38) Tg/Ma/m K2O (bracketed are mean values for entire Central American volcanic arc length). Volatile/K2O concentration ratios derived from melt inclusion analyses and petrologic modelling then allow to calculate volatile fluxes as 1.02-14.3 (6.2) Tg/Ma/m H2O, 0.02-0.45 (0.17) Tg/Ma/m CO2, and 0.07-0.34 (0.22) Tg/Ma/m Cl. The same approach yields long-term sulfur fluxes of 0.12-1.08 (0.54) Tg/Ma/m while present-day open-vent SO2-flux monitoring yields 0.06-2.37 (0.83) Tg/Ma/m S. Input-output comparisons show that the arc water fluxes only account for up to 40 % of the input even if we include an "invisible" plutonic component constrained by crustal growth. With 20-30 % of the H2O input transferred into the deeper mantle as suggested by petrologic modeling, there remains a deficiency of, say, 30-40 % in the water budget. At least some of this water is transferred into two upper-plate regions of low seismic velocity and electrical resistivity whose sizes vary along arc: one region widely envelopes the melt ascent paths from slab top to arc and the other extends obliquely from the slab below the forearc to below the arc. Whether these reservoirs are transient or steady remains unknown. KW - Subduction input KW - Forearc dewatering KW - Arc magmatism KW - Subduction fluids Y1 - 2014 U6 - https://doi.org/10.1007/s00531-014-1001-1 SN - 1437-3254 SN - 1437-3262 VL - 103 IS - 7 SP - 2101 EP - 2127 PB - Springer CY - New York ER - TY - THES A1 - Stroncik, Nicole A. T1 - Volatiles as tracers for mantle processes and magma formation and evolution N2 - The geochemical composition of oceanic basalts provides us with a window into the distribution of geochemical elements within the Earth’s mantle in space and time. In conjunction with a throughout knowledge on how the different elements behave e.g. during melt formation and evolution or on their partition behaviour between e.g. minerals and melts this information has been transformed into various models on how oceanic crust is formed along plume influenced or normal mid-ocean ridge segments, how oceanic crust evolves in response to seawater, on subduction recycling of oceanic crust and so forth. The work presented in this habilitation was aimed at refining existing models, putting further constraints on some of the major open questions in this field of research while at the same time trying to increase our knowledge on the behaviour of noble gases as a tracer for melt formation and evolution processes. In the line of this work the author and her co-workers were able to answer one of the major questions concerning the formation of oceanic crust along plume-influenced ridges – in which physical state does the plume material enter the ridge? Based on submarine volcanic glass He, Ne and Ar data, the author and her co-workers have shown that the interaction of mantle plumes with mid-ocean ridges occurs in the physical form of melts. In addition, the author and her co-workers have also put further constraints on one of the major questions concerning the formation of oceanic crust along normal mid-ocean ridges – namely how is the mid-ocean ridge system effectively cooled to form the lower oceanic crust? Based on Ne and Ar data in combination with Cl/K ratios of basaltic glass from the Mid-Atlantic ridge and estimates of crystallisation pressures they have shown, that seawater penetration reaches lower crustal levels close to the Moho, indicating that hydrothermal circulation might be an effective cooling mechanism even for the deep parts of the oceanic crust. Considering subduction recycling, the heterogeneity of the Earth’s mantle and mantle dynamic processes the key question is on which temporal and spatial scales is the Earth’s mantle geochemically heterogeneous? In the line of this work the author along with her co-workers have shown based on Cl/K ratios in conjunction with the Sr, Nd, and Pb isotopes of the OIBs representing the type localities for the different mantle endmembers that the quantity of Cl recycled into the mantle via subduction is not uniform and that neither the HIMU nor the EM1 and EM2 mantle components can be considered as distinct mantle endmembers. In addition, we have shown, based on He, Ne and Ar isotope and trace-element data from the Foundation hotspot that the near ridge seamounts of the Foundation seamount chain formed by the Foundation hotspot erupt lavas with a trace-element signature clearly characteristic of oceanic gabbro which indicates the existence of recycled, virtually unchanged lower oceanic crust in the plume source. This is a clear sign of the inefficiency of the stirring mechanism existing at mantle depth. Similar features are seen in other near-axis hotspot magmas around the world. Based on He, Sr, Nd, Pb and O isotopes and trace elements in primitive mafic dykes from the Etendeka flood basalts, NW Namibia the author along with her co-workers have shown that deep, less degassed mantle material carried up by a mantle plume contributed significantly to the flood basalt magmatism. The Etendeka flood basalts are part of the South Atlantic LIP, which is associated with the breakup of Gondwana, the formation of the Paraná-Etendeka flood basalts and the Walvis Ridge - Tristan da Cunha hotspot track. Thus reinforcing the lately often-challenged concept of mantle plumes and the role of mantle plumes in the formation of large igneous provinces. Studying the behaviour of noble gases during melt formation and evolution the author along with her co-workers has shown that He can be considerable more susceptible to changes during melt formation and evolution resulting not only in a complete decoupling of He isotopes from e.g. Ne or Pb isotopes but also in a complete loss of the primary mantle isotope signal. They have also shown that this decoupling occurs mainly during the melt formation processes requiring He to be more compatible during mantle melting than Ne. In addition, the author along with her co workers were able to show that incorporation of atmospheric noble gases into igneous rocks is in general a two-step process: (1) magma contamination by assimilation of altered oceanic crust results in the entrainment of air-equilibrated seawater noble gases; (2) atmospheric noble gases are adsorbed onto grain surfaces during sample preparation. This implies, considering the ubiquitous presence of the contamination signal, that magma contamination by assimilation of a seawater-sourced component is an integral part of mid-ocean ridge basalt evolution. KW - noble gases KW - mantle formation KW - mantle evolution KW - ocean-crust formation KW - plume-ridge interaction KW - contamination processes KW - magmatic processes KW - continental break-up Y1 - 2019 ER - TY - BOOK A1 - Farias, Fidel T1 - Volatility transmission between the oil market and the financial market T3 - Forschungsbericht Y1 - 2011 SN - 978-3-9812422-8-7 VL - 0111 PB - Inst. für Makroökonomik CY - Potsdam ER - TY - JOUR A1 - Namiki, Atsuko A1 - Rivalta, Eleonora A1 - Woith, Heiko A1 - Willey, Timothy A1 - Parolai, Stefano A1 - Walter, Thomas R. T1 - Volcanic activities triggered or inhibited by resonance of volcanic edifices to large earthquakes JF - Geology N2 - The existence of a causal link between large earthquakes and volcanic unrest is widely accepted. Recent observations have also revealed counterintuitive negative responses of volcanoes to large earthquakes, including decreased gas emissions and subsidence in volcanic areas. In order to explore the mechanisms that could simultaneously explain both the positive and negative responses of volcanic activity to earthquakes, we here focus on the role played by topography. In the laboratory, we shook a volcanic edifice analogue, made of gel, previously injected with a buoyant fluid. We find that shaking triggers rapid migration of the buoyant fluid upward, downward, or laterally, depending on the fluid’s buoyancy and storage depth; bubbly fluids stored at shallow depth ascend, while low-buoyancy fluids descend or migrate laterally. The migration of fluids induced by shaking is two orders of magnitude faster than without shaking. Downward or lateral fluid migration may decrease volcanic gas emissions and cause subsidence as a negative response, while upward migration is consistent both with an increase in volcanic activity and immediate unrest (deformation and seismicity) after large earthquakes. The fluid migration is more efficient when the oscillation frequency is close to the resonance frequency of the edifice. The resonance frequency for a 30-km-wide volcanic mountain range, such as those where subsidence was observed, is ∼0.07 Hz. Only large earthquakes are able to cause oscillation at such low frequencies. Y1 - 2018 U6 - https://doi.org/10.1130/G45323.1 SN - 0091-7613 SN - 1943-2682 VL - 47 IS - 1 SP - 67 EP - 70 PB - American Institute of Physics CY - Boulder ER -