TY - JOUR A1 - Zhu, Chuanbin A1 - Cotton, Fabrice A1 - Kwak, Dong-Youp A1 - Ji, Kun A1 - Kawase, Hiroshi A1 - Pilz, Marco T1 - Within-site variability in earthquake site response JF - Geophysical journal international N2 - The within-site variability in site response is the randomness in site response at a given site from different earthquakes and is treated as aleatory variability in current seismic hazard/risk analyses. In this study, we investigate the single-station variability in linear site response at K-NET and KiK-net stations in Japan using a large number of earthquake recordings. We found that the standard deviation of the horizontal-to-vertical Fourier spectral ratio at individual sites, that is single-station horizontal-to-vertical spectral ratio (HVSR) sigma sigma(HV,s), approximates the within-site variability in site response quantified using surface-to-borehole spectral ratios (for oscillator frequencies higher than the site fundamental frequency) or empirical ground-motion models. Based on this finding, we then utilize the single-station HVSR sigma as a convenient tool to study the site-response variability at 697 KiK-net and 1169 K-NET sites. Our results show that at certain frequencies, stiff, rough and shallow sites, as well as small and local events tend to have a higher sigma(HV,s). However, when being averaged over different sites, the single-station HVSR sigma, that is sigma(HV), increases gradually with decreasing frequency. In the frequency range of 0.25-25 Hz, sigma(HV) is centred at 0.23-0.43 in ln scales (a linear scale factor of 1.26-1.54) with one standard deviation of less than 0.1. sigma(HV) is quite stable across different tectonic regions, and we present a constant, as well as earthquake magnitude- and distance-dependent sigma(HV) models. KW - earthquake ground motions KW - earthquake hazards KW - site effects Y1 - 2021 U6 - https://doi.org/10.1093/gji/ggab481 SN - 0956-540X SN - 1365-246X VL - 229 IS - 2 SP - 1268 EP - 1281 PB - Oxford Univ. Press CY - Oxford ER - TY - BOOK A1 - Wegmann, Simone T1 - The power of opposition BT - how legislative organization influences democratic consolidation N2 - Proposing a novel way to look at the consolidation of democratic regimes, this book presents important theoretical and empirical contributions to the study of democratic consolidation, legislative organization, and public opinion. Theoretically, Simone Wegmann brings legislatures into focus as the main body representing both winners and losers of democratic elections. Empirically, Wegmann shows that the degree of policy-making power of opposition players varies considerably between countries. Using survey data from the CSES, the ESS, and the LAPOP and systematically analyzing more than 50 legislatures across the world and the specific rights they grant to opposition players during the policy-making process, Wegmann demonstrates that neglecting the curial role of the legislature in a democratic setting can only lead to an incomplete assessment of the importance of institutions for democratic consolidation. The Power of Opposition will be of great interest to scholars of comparative politics, especially those working on questions related to legislative organization, democratic consolidation, and/or public opinion. Y1 - 2022 SN - 978-0-367-43731-2 SN - 978-1-032-28245-9 SN - 978-1-003-00536-0 SN - 978-1-000-59828-5 SN - 978-1-000-59832-2 U6 - https://doi.org/10.4324/9781003005360 PB - Routledge CY - New York ER - TY - JOUR A1 - Klett, Kolja A1 - Cherstvy, Andrey G. A1 - Shin, Jaeoh A1 - Sokolov, Igor M. A1 - Metzler, Ralf T1 - Non-Gaussian, transiently anomalous, and ergodic self-diffusion of flexible dumbbells in crowded two-dimensional environments BT - coupled translational and rotational motions JF - Physical review : E, Statistical, nonlinear and soft matter physics N2 - We employ Langevin-dynamics simulations to unveil non-Brownian and non-Gaussian center-of-mass self-diffusion of massive flexible dumbbell-shaped particles in crowded two-dimensional solutions. We study the intradumbbell dynamics of the relative motion of the two constituent elastically coupled disks. Our main focus is on effects of the crowding fraction phi and of the particle structure on the diffusion characteristics. We evaluate the time-averaged mean-squared displacement (TAMSD), the displacement probability-density function (PDF), and the displacement autocorrelation function (ACF) of the dimers. For the TAMSD at highly crowded conditions of dumbbells, e.g., we observe a transition from the short-time ballistic behavior, via an intermediate subdiffusive regime, to long-time Brownian-like spreading dynamics. The crowded system of dimers exhibits two distinct diffusion regimes distinguished by the scaling exponent of the TAMSD, the dependence of the diffusivity on phi, and the features of the displacement-ACF. We attribute these regimes to a crowding-induced transition from viscous to viscoelastic diffusion upon growing phi. We also analyze the relative motion in the dimers, finding that larger phi suppress their vibrations and yield strongly non-Gaussian PDFs of rotational displacements. For the diffusion coefficients D(phi) of translational and rotational motion of the dumbbells an exponential decay with phi for weak and a power-law variation D(phi) proportional to (phi - phi(star))(2.4) for strong crowding is found. A comparison of simulation results with theoretical predictions for D(phi) is discussed and some relevant experimental systems are overviewed. Y1 - 2021 U6 - https://doi.org/10.1103/PhysRevE.104.064603 SN - 2470-0045 SN - 2470-0053 VL - 104 IS - 6 PB - American Physical Society CY - College Park ER - TY - JOUR A1 - Simon, François-Xavier A1 - Papadopoulos, Nikos A1 - Guillemoteau, Julien A1 - Oikonomou, Dimitris A1 - Simirdanis, Kleanthis T1 - Multi-frequency loop electromagnetic system measurement on shallow offshore archaeological site of Oulos JF - ArcheoSciences : revue d'archéométrie / Groupe des Méthodes Pluridisciplinaires Contribuant à l'Archéologie (GMPCA) KW - hallow offshore KW - multi-frequency KW - electromagnetic KW - modelling KW - case study Y1 - 2021 U6 - https://doi.org/10.4000/archeosciences.9690 SN - 1960-1360 SN - 2104-3728 VL - 45 IS - 1 SP - 215 EP - 218 PB - Presses Universitaires de Rennes CY - Rennes ER - TY - JOUR A1 - Wegmann, Simone T1 - Sven Siefken und Hilmar Rommetvedt (Hrsg.). 2021. Parliamentary committees in the policy process JF - Zeitschrift für vergleichende Politikwissenschaft Y1 - 2023 U6 - https://doi.org/10.1007/s12286-022-00553-5 SN - 1865-2646 SN - 1865-2654 VL - 16 IS - 4 SP - 769 EP - 772 PB - VS Verl. für Sozialwissenschaften CY - Wiesbaden ER - TY - JOUR A1 - Dämpfling, Helge L. C. A1 - Mielke, Christian A1 - Koellner, Nicole A1 - Lorenz, Melanie A1 - Rogass, Christian A1 - Altenberger, Uwe A1 - Harlov, Daniel E. A1 - Knoper, Michael T1 - Automatic element and mineral detection in thin sections using hyperspectral transmittance imaging microscopy (HyperTIM) JF - European journal of mineralogy N2 - In this study we present a novel method for the automatic detection of minerals and elements using hyperspectral transmittance imaging microscopy measurements of complete thin sections (HyperTIM). This is accomplished by using a hyperspectral camera system that operates in the visible and near-infrared (VNIR) range with a specifically designed sample holder, scanning setup, and a microscope lens. We utilize this method on a monazite ore thin section from Steenkampskraal (South Africa), which we analyzed for the rare earth element (REE)-bearing mineral monazite ((Ce,Nd,La)PO4), with high concentrations of Nd. The transmittance analyses with the hyperspectral VNIR camera can be used to identify REE minerals and Nd in thin sections. We propose a three-point band depth index, the Nd feature depth index (NdFD), and its related product the Nd band depth index (NdBDI), which enables automatic mineral detection and classification for the Nd-bearing monazites in thin sections. In combination with the average concentration of the relative Nd content, it permits a destruction-free, total concentration calculation for Nd across the entire thin section. Y1 - 2022 U6 - https://doi.org/10.5194/ejm-34-275-2022 SN - 0935-1221 SN - 1617-4011 VL - 34 IS - 3 SP - 275 EP - 284 PB - Copernicus CY - Göttingen ER - TY - RPRT A1 - Hertel, Kyra A1 - Kennecke, Andreas A1 - Reiche, Michael A1 - Schmidt-Kopplin, Diana A1 - Tillmann, Diana A1 - Winkler, Marco T1 - Bericht zum Auftaktworkshop des Forschungsprojektes "Workflow-Management-Systeme für Open-Access-Hochschulverlage (OA-WFMS)" N2 - Das Forschungsprojekt „Workflow-Management-Systeme für Open-Access-Hochschulverlage (OA-WFMS)” ist eine Kooperation zwischen der HTWK Leipzig und der Universität Potsdam. Ziel ist es, die Bedarfe von Universitäts- und Hochschulverlagen und Anforderungen an ein Workflow-Management-Systeme (WFMS) zu analysieren, um daraus ein generisches Lastenheft zu erstellen. Das WFMS soll den Publikationsprozess in OA-Verlagen erleichtern, beschleunigen sowie die Verbreitung von Open Access und das nachhaltige, digitale wissenschaftliche Publizieren fördern. Das Projekt baut auf den Ergebnissen der Projekte „Open-Access-Hochschulverlag (OA-HVerlag)“ und „Open-Access-Strukturierte-Kommunikation (OA-STRUKTKOMM)“ auf. Der diesem Bericht zugrunde liegende Auftaktworkshop fand 2024 in Leipzig mit Vertreter:innen von zehn Institutionen statt. Der Workshop diente dazu, Herausforderungen und Anforderungen an ein WFMS zu ermitteln sowie bestehende Lösungsansätze und Tools zu diskutieren. Im Workshop wurden folgende Fragen behandelt: a. Wie kann die Organisation und Überwachung von Publikationsprozessen in wissenschaftlichen Verlagen durch ein WFMS effizient gestaltet werden? b. Welche Anforderungen muss ein WFMS erfüllen, um Publikationsprozesse optimal zu unterstützen? c. Welche Schnittstellen müssen berücksichtigt werden, um die Interoperabilität der Systeme zu garantieren? d. Welche bestehenden Lösungsansätze und Tools sind bereits im Einsatz und welche Vor- und Nachteile haben diese? Der Workshop gliederte sich in zwei Teile : Teil 1 behandelte Herausforderungen und Anforderungen (Fragen a. bis c.), Teil 2 bestehende Lösungen und Tools (Frage d.). Die Ergebnisse des Workshops fließen in die Bedarfsanalyse des Forschungsprojekts ein. Die im Bericht dokumentierten Ergebnisse zeigen die Vielzahl der Herausforderungen der bestehenden Ansätze bezüglich des OA-Publikationsmanagements . Die Herausforderungen zeigen sich insbesondere bei der Systemheterogenität, den individuellen Anpassungsbedarfen und der Notwendigkeit der systematischen Dokumentation. Die eingesetzten Unterstützungssysteme und Tools wie Dateiablagen, Projektmanagement- und Kommunikationstools können insgesamt den Anforderungen nicht genügen, für Teillösungen sind sie jedoch nutzbar. Deshalb muss die Integration bestehender Systeme in ein zu entwickelndes OA-WFMS in Betracht gezogen und die Interoperabilität der miteinander interagierenden Systeme gewährleistet werden. Die Beteiligten des Workshops waren sich einig, dass das OA-WFMS flexibel und modular aufgebaut werden soll. Einer konsortialen Softwareentwicklung und einem gemeinsamen Betrieb im Verbund wurde der Vorrang gegeben. Der Workshop lieferte wertvolle Einblicke in die Arbeit der Hochschulverlage und bildet somit eine solide Grundlage für die in Folge zu erarbeitende weitere Bedarfsanalyse und die Erstellung des generischen Lastenheftes. N2 - The research project „Workflow Management Systems for Open Access University Presses (OA-WFMS)“ is a collaboration between HTWK Leipzig and the University of Potsdam. The aim is to analyze the needs of university presses and the requirements for a Workflow Management System (WFMS) to create a catalog of generic specifications. The WFMS is intended to facilitate and accelerate the publication process in OA presses, as well as to promote the spread of open access and sustainable, digital scientific publishing. The project builds on the results of the project „Open Access University Press (OA-HVerlag)“ and „Open Access Structured Communication (OA-STRUKTKOMM)“. The kickoff workshop for this report took place in 2024 in Leipzig with representatives from ten institutions. The workshop aimed to identify challenges and requirements for a WFMS, as well as discuss existing solutions and tools. The workshop addressed the following questions: a. How can the organization and monitoring of publication processes in scientific presses be efficiently designed using a WFMS? b. What requirements must a WFMS meet to optimally support publication processes? c. Which interfaces need to be considered to ensure the interoperability of the systems? d. Which existing solutions and tools are already in use, and what are their advantages and disadvantages? The workshop was divided into two parts: Part 1 addressed challenges and requirements (questions a. to c.), and Part 2 focused on existing solutions and tools (question d.). The results of the workshop will be incorporated into the needs analysis of the research project. The results documented in the report highlight the variety of challenges of the existing approaches regarding OA publication management. The challenges are particularly evident in system heterogeneity, the need for individual customization, and the necessity of systematic documentation. The support systems and tools in use, such as file storage, project management, and communication tools, do not fully meet the requirements but can be used for partial solutions. Therefore, the integration of existing systems into a new OA-WFMS must be considered, and the interoperability of interacting systems must be ensured. The workshop participants agreed that the OA-WFMS should be flexible and modular. Priority was given to consortial software development and joint operation within the association. The workshop provided valuable insights into the work of university presses and forms a solid foundation for the subsequent further needs analysis and the creation of the catalog of generic specifications. T2 - Report on the kick-off workshop of the research project "Workflow Management Systems for Open Access University Publishers (OA-WFMS)" KW - Workflow-Management-System KW - Open Access KW - Hochschulverlage KW - Publikationsprozesse KW - Interoperalität KW - Auftaktworkshop KW - Bedarfsanalyse KW - Workflow Management System KW - University Presses KW - Publication Processes KW - Interoperability KW - Kickoff Workshop KW - Open Access KW - Needs Analysis Y1 - 2024 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-638057 ER - TY - JOUR A1 - Bolotov, Maxim I. A1 - Smirnov, Lev A. A1 - Bubnova, E. S. A1 - Osipov, Grigory V. A1 - Pikovskij, Arkadij T1 - Spatiotemporal regimes in the Kuramoto-Battogtokh system of nonidentical oscillators JF - Journal of experimental and theoretical physics N2 - We consider the spatiotemporal states of an ensemble of nonlocally coupled nonidentical phase oscillators, which correspond to different regimes of the long-term evolution of such a system. We have obtained homogeneous, twisted, and nonhomogeneous stationary solutions to the Ott-Antonsen equations corresponding to key variants of the realized collective rotational motion of elements of the medium in question with nonzero mesoscopic characteristics determining the degree of coherence of the dynamics of neighboring particles. We have described the procedures of the search for the class of nonhomogeneous solutions as stationary points of the auxiliary point map and of determining the stability based on analysis of the eigenvalue spectrum of the composite operator. Static and breather cluster regimes have been demonstrated and described, as well as the regimes with an irregular behavior of averaged complex fields including, in particular, the local order parameter. Y1 - 2021 U6 - https://doi.org/10.1134/S1063776121010106 SN - 1063-7761 SN - 1090-6509 VL - 132 IS - 1 SP - 127 EP - 147 PB - Springer CY - Heidelberg [u.a.] ER - TY - JOUR A1 - Barbosa, Luis Romero A. A1 - Coelho, Victor Hugo R. A1 - Gusmao, Ana Claudia V. L. F. A1 - Fernandes, Lucila A. E. A1 - da Silva, Bernardo B. A1 - Galvao, Carlos de O. A1 - Caicedo, Nelson O. L. A1 - da Paz, Adriano R. A1 - Xuan, Yunqing A1 - Bertrand, Guillaume F. A1 - Melo, Davi de C. D. A1 - Montenegro, Suzana M. G. L. A1 - Oswald, Sascha E. A1 - Almeida, Cristiano das N. T1 - A satellite-based approach to estimating spatially distributed groundwater recharge rates in a tropical wet sedimentary region despite cloudy conditions JF - Journal of hydrology N2 - Groundwater recharge (GWR) is one of the most challenging water fluxes to estimate, as it relies on observed data that are often limited in many developing countries. This study developed an innovative water budget method using satellite products for estimating the spatially distributed GWR at monthly and annual scales in tropical wet sedimentary regions despite cloudy conditions. The distinctive features proposed in this study include the capacity to address 1) evapotranspiration estimations in tropical wet regions frequently overlaid by substantial cloud cover; and 2) seasonal root-zone water storage estimations in sedimentary regions prone to monthly variations. The method also utilises satellite-based information of the precipitation and surface runoff. The GWR was estimated and validated for the hydrologically contrasting years 2016 and 2017 over a tropical wet sedimentary region located in North-eastern Brazil, which has substantial potential for groundwater abstraction. This study showed that applying a cloud-cleaning procedure based on monthly compositions of biophysical data enables the production of a reasonable proxy for evapotranspiration able to estimate groundwater by the water budget method. The resulting GWR rates were 219 (2016) and 302 (2017) mm yr(-1), showing good correlations (CC = 0.68 to 0.83) and slight underestimations (PBIAS =-13 to-9%) when compared with the referenced estimates obtained by the water table fluctuation method for 23 monitoring wells. Sensitivity analysis shows that water storage changes account for +19% to-22% of our monthly evaluation. The satellite-based approach consistently demonstrated that the consideration of cloud-cleaned evapotranspiration and root-zone soil water storage changes are essential for a proper estimation of spatially distributed GWR in tropical wet sedimentary regions because of their weather seasonality and cloudy conditions. KW - remote sensing KW - water balance KW - groundwater recharge KW - water table KW - fluctuation KW - tropical climate KW - sedimentary aquifer Y1 - 2022 U6 - https://doi.org/10.1016/j.jhydrol.2022.127503 SN - 0022-1694 SN - 1879-2707 VL - 607 PB - Elsevier CY - Amsterdam ER - TY - GEN A1 - Jauer, Nora A1 - Batura, Justine T1 - Don’t settle for less Y1 - 2021 UR - https://voelkerrechtsblog.org/dont-settle-for-less/ U6 - https://doi.org/10.17176/20210422-100928-0 SN - 2510-2567 PB - M. Riegner c/o Humboldt-Univ. CY - Berlin ER -