TY - INPR A1 - Zehmisch, René T1 - Über Waldidentitäten der Brownschen Bewegung N2 - Aus dem Inhalt: 1 Abraham Wald (1902-1950) 2 Einführung der Grundbegriffe. Einige technische bekannte Ergebnisse 2.1 Martingal und Doob-Ungleichung 2.2 Brownsche Bewegung und spezielle Martingale 2.3 Gleichgradige Integrierbarkeit von Prozessen 2.4 Gestopptes Martingal 2.5 Optionaler Stoppsatz von Doob 2.6 Lokales Martingal 2.7 Quadratische Variation 2.8 Die Dichte der ersten einseitigen Überschreitungszeit der Brown- schen Bewegung 2.9 Waldidentitäten für die Überschreitungszeiten der Brownschen Bewegung 3 Erste Waldidentität 3.1 Burkholder, Gundy und Davis Ungleichungen der gestoppten Brown- schen Bewegung 3.2 Erste Waldidentität für die Brownsche Bewegung 3.3 Verfeinerungen der ersten Waldidentität 3.4 Stärkere Verfeinerung der ersten Waldidentität für die Brown- schen Bewegung 3.5 Verfeinerung der ersten Waldidentität für spezielle Stoppzeiten der Brownschen Bewegung 3.6 Beispiele für lokale Martingale für die Verfeinerung der ersten Waldidentität 3.7 Überschreitungszeiten der Brownschen Bewegung für nichtlineare Schranken 4 Zweite Waldidentität 4.1 Zweite Waldidentität für die Brownsche Bewegung 4.2 Anwendungen der ersten und zweitenWaldidentität für die Brown- schen Bewegung 5 Dritte Waldidentität 5.1 Dritte Waldidentität für die Brownsche Bewegung 5.2 Verfeinerung der dritten Waldidentität 5.3 Eine wichtige Voraussetzung für die Verfeinerung der drittenWal- didentität 5.4 Verfeinerung der dritten Waldidentität für spezielle Stoppzeiten der Brownschen Bewegung 6 Waldidentitäten im Mehrdimensionalen 6.1 Erste Waldidentität im Mehrdimensionalen 6.2 Zweite Waldidentität im Mehrdimensionalen 6.3 Dritte Waldidentität im Mehrdimensionalen 7 Appendix T3 - Mathematische Statistik und Wahrscheinlichkeitstheorie : Preprint - 2008, 04 Y1 - 2008 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-49469 ER - TY - INPR A1 - Zakharov, Venjamin E. A1 - Meister, Claudia-Veronika T1 - Acceleration and heating in the auroral magnetosphere by current driven electrostatic ion cyclotron turbulence N2 - A numerical MHD model is developed to investigate acceleration and heating of both thermal and auroral plasma. This is done for magnetospheric flux tubes in which intensive field aligned currents flow. To give each of these tubes, the empirical Tsyganenko model of the magnetospheric field is used. The parameters of the background plasma outside the flux tube as well as the strength of the electric field of magnetospheric convection are given. Performing the numerical calculations, the distributions of the plasma densities, velocities, temperatures, parallel electric field and current, and of the coefficients of thermal conductivity are obtained in a self-consistent way. It is found that EIC turbulence develops effectively in the thermal plasma. The parallel electric field develops under the action of the anomalous resistivity. This electric field accelerates both the thermal and the auroral plasma. The thermal turbulent plasma is also subjected to an intensive heating. The increase of the plasma of the Earth's ionosphere. Besides, studying the growth and dispersion properties of oblique ion cyclotron waves excited in a drifting magnetized plasma, it is shown that under non-stationary conditions such waves may reveal the properties of bursts of polarized transverse electromagnetic waves at frequencies near the patron gyrofrequency. T3 - NLD Preprints - 59 Y1 - 2000 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-14959 ER - TY - INPR A1 - Witt, Annette A1 - Kurths, Jürgen A1 - Krause, F. A1 - Fischer, K. T1 - On the validity of a model for the reversals of the Earth‘s magnetic field N2 - We have used techniques of nonlinear dynamics to compare a special model for the reversals of the Earth's magnetic field with the observational data. Although this model is rather simple, there is no essential difference to the data by means of well-known characteristics, such as correlation function and probability distribution. Applying methods of symbolic dynamics we have found that the considered model is not able to describe the dynamical properties of the observed process. These significant differences are expressed by algorithmic complexity and Renyi information. T3 - NLD Preprints - 4 Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-13460 ER - TY - INPR A1 - Weske, Mathias A1 - Yang, Jian A1 - Maglio, Paul P. T1 - Special issue service oriented computing (ICSOC) guest editors' introduction T2 - International journal of cooperative information systems Y1 - 2012 U6 - https://doi.org/10.1142/S0218843012020017 SN - 0218-8430 VL - 21 IS - 1 SP - 1 EP - 2 PB - World Scientific CY - Singapore ER - TY - INPR A1 - Weske, Mathias A1 - Rinderle-Ma, Stefanie A1 - Toumani, Farouk A1 - Wolf, Karsten T1 - Special section on BPM 2011 conference. - Special Issue T2 - Information systems Y1 - 2013 U6 - https://doi.org/10.1016/j.is.2013.01.003 SN - 0306-4379 VL - 38 IS - 4 SP - 545 EP - 546 PB - Elsevier CY - Oxford ER - TY - INPR A1 - Wellstein, Camilla A1 - Schröder-Esselbach, Boris A1 - Reineking, Bjoern A1 - Zimmermann, Niklaus E. T1 - Understanding species and community response to environmental change - A functional trait perspective T2 - Agriculture, ecosystems & environment : an international journal for scientific research on the relationship of agriculture and food production to the biosphere KW - Functional traits KW - Functional diversity KW - Database KW - Land use KW - Management KW - Climate change KW - Landscape KW - Ecosystem function KW - Clonal plants KW - Dispersal KW - Plant growth KW - Orthoptera Y1 - 2011 U6 - https://doi.org/10.1016/j.agee.2011.06.024 SN - 0167-8809 VL - 145 IS - 1 SP - 1 EP - 4 PB - Elsevier CY - Amsterdam ER - TY - INPR A1 - Warschburger, Petra A1 - Lehmkuhl, Ulrike T1 - Disturbed eating behavior and its consequences T2 - Praxis der Kinderpsychologie und Kinderpsychiatrie : Ergebnisse aus Psychotherapie, Beratung und Psychiatrie Y1 - 2011 SN - 0032-7034 VL - 60 IS - 4 SP - 249 EP - 252 PB - Vandenhoeck & Ruprecht CY - Göttingen ER - TY - INPR A1 - Warschburger, Petra T1 - Nutrition in children and adolescents T2 - Zeitschrift für Gesundheitspsychologie Y1 - 2013 SN - 0943-8149 VL - 21 IS - 2 SP - 49 EP - 52 PB - Hogrefe CY - Göttingen ER - TY - INPR A1 - Wannicke, Nicola A1 - Endres, S. A1 - Engel, A. A1 - Grossart, Hans-Peter A1 - Nausch, M. A1 - Unger, J. A1 - Voss, Martin T1 - Response of nodularia spumigena to pCO(2) - Part 1: Growth, production and nitrogen cycling T2 - Biogeosciences N2 - Heterocystous cyanobacteria of the genus Nodularia form extensive blooms in the Baltic Sea and contribute substantially to the total annual primary production. Moreover, they dispense a large fraction of new nitrogen to the ecosystem when inorganic nitrogen concentration in summer is low. Thus, it is of ecological importance to know how Nodularia will react to future environmental changes, in particular to increasing carbon dioxide (CO2) concentrations and what consequences there might arise for cycling of organic matter in the Baltic Sea. Here, we determined carbon (C) and dinitrogen (N-2) fixation rates, growth, elemental stoichiometry of particulate organic matter and nitrogen turnover in batch cultures of the heterocystous cyanobacterium Nodularia spumigena under low (median 315 mu atm), mid (median 353 mu atm), and high (median 548 mu atm) CO2 concentrations. Our results demonstrate an overall stimulating effect of rising pCO(2) on C and N-2 fixation, as well as on cell growth. An increase in pCO(2) during incubation days 0 to 9 resulted in an elevation in growth rate by 84 +/- 38% (low vs. high pCO(2)) and 40 +/- 25% (mid vs. high pCO(2)), as well as in N-2 fixation by 93 +/- 35% and 38 +/- 1%, respectively. C uptake rates showed high standard deviations within treatments and in between sampling days. Nevertheless, C fixation in the high pCO(2) treatment was elevated compared to the other two treatments by 97% (high vs. low) and 44% (high vs. mid) at day 0 and day 3, but this effect diminished afterwards. Additionally, elevation in carbon to nitrogen and nitrogen to phosphorus ratios of the particulate biomass formed (POC : POP and PON : POP) was observed at high pCO(2). Our findings suggest that rising pCO(2) stimulates the growth of heterocystous diazotrophic cyanobacteria, in a similar way as reported for the non-heterocystous diazotroph Trichodesmium. Implications for biogeochemical cycling and food web dynamics, as well as ecological and socio-economical aspects in the Baltic Sea are discussed. Y1 - 2012 U6 - https://doi.org/10.5194/bg-9-2973-2012 SN - 1726-4170 VL - 9 IS - 8 SP - 2973 EP - 2988 PB - Copernicus CY - Göttingen ER - TY - INPR A1 - Wang, Ping A1 - Scherler, Dirk A1 - Jing Liu-Zeng, A1 - Mey, Jürgen A1 - Avouac, Jean-Philippe A1 - Zhang, Yunda A1 - Shi, Dingguo T1 - GEOMORPHOLOGY Response to Comment on "Tectonic control of Yarlung Tsangpo Gorge revealed by a buried canyon in Southern Tibet" T2 - Science N2 - In their Comment, Zeitler et al. do not challenge our results or interpretation. Our study does not disprove coupling between tectonic uplift and erosion but suggests that this coupling cannot be the sole explanation of rapid uplift in the Himalayan syntaxes. Y1 - 2015 SN - 0036-8075 SN - 1095-9203 VL - 349 IS - 6250 PB - American Assoc. for the Advancement of Science CY - Washington ER - TY - INPR A1 - Walz, Norbert A1 - Adrian, Rita A1 - Gilbert, John J. A1 - Monaghan, Michael T. A1 - Weithoff, Guntram A1 - Zimmermann-Timm, Heike T1 - Preface T2 - Hydrobiologia : acta hydrobiologica, hydrographica, limnologica et protistologica Y1 - 2011 U6 - https://doi.org/10.1007/s10750-010-0514-2 SN - 0018-8158 VL - 662 IS - 1 SP - 1 EP - 4 PB - Springer CY - Dordrecht ER - TY - INPR A1 - Wallenta, Daniel T1 - A Lefschetz fixed point formula for elliptic quasicomplexes N2 - In a recent paper with N. Tarkhanov, the Lefschetz number for endomorphisms (modulo trace class operators) of sequences of trace class curvature was introduced. We show that this is a well defined, canonical extension of the classical Lefschetz number and establish the homotopy invariance of this number. Moreover, we apply the results to show that the Lefschetz fixed point formula holds for geometric quasiendomorphisms of elliptic quasicomplexes. T3 - Preprints des Instituts für Mathematik der Universität Potsdam - 2(2013)12 KW - Perturbed complexes KW - curvature KW - Lefschetz number KW - fixed point formula Y1 - 2013 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-67016 ER - TY - INPR A1 - Voss, Carola Regine T1 - Harness-Prozesse N2 - Harness-Prozesse finden in der Forschung immer mehr Anwendung. Vor allem gewinnen Harness-Prozesse in stetiger Zeit an Bedeutung. Grundlegende Literatur zu diesem Thema ist allerdings wenig vorhanden. In der vorliegenden Arbeit wird die vorhandene Grundlagenliteratur zu Harness-Prozessen in diskreter und stetiger Zeit aufgearbeitet und Beweise ausgeführt, die bisher nur skizziert waren. Ziel dessen ist die Existenz einer Zerlegung von Harness-Prozessen über Z beziehungsweise R+ nachzuweisen. T3 - Mathematische Statistik und Wahrscheinlichkeitstheorie : Preprint - 2010, 13 Y1 - 2010 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-49651 ER - TY - INPR A1 - Volosevich, Alexandra A1 - Meister, Claudia-Veronika T1 - Nonlinear electrostatic ion-acoustic waves in the solar atmosphere N2 - Basing on recent solar models, the excitation of ion-acoustic turbulence in the weaklycollisional, fully and partially-ionized regions of the solar atmosphere is investigated. Within the frame of hydrodynamics, conditions are found under which the heating of the plasma by ion-acoustic type waves is more effective than the Joule heating. Taking into account wave and Joule heating effects, a nonlinear differential equation is derived, which describes the evolution of nonlinear ion-acoustic waves in the collisional plasma. T3 - NLD Preprints - 60 Y1 - 2000 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-14968 ER - TY - INPR A1 - Vioux, Andre A1 - Taubert, Andreas T1 - Ionic liquids 2014 and selected papers from ILMAT 2013: highlighting the ever-growing potential of ionic liquids T2 - International journal of molecular sciences Y1 - 2014 U6 - https://doi.org/10.3390/ijms151222815 SN - 1422-0067 VL - 15 IS - 12 SP - 22815 EP - 22818 PB - Molecular Diversity Preservation International CY - Basel ER - TY - INPR A1 - Verwiebe, Roland A1 - Bobzien, Licia A1 - Fritsch, Nina-Sophie A1 - Buder, Claudia T1 - Social inequality and digitization in modern societies BT - a systematic literature review on the role of ethnicity, gender, and age T2 - SocArXiv : open archive of the social sciences N2 - The digitization process has triggered a profound transformation of modern societies. It encompasses a broad spectrum of technical, social, political, cultural and economic developments related to the mass use of computer- and internet-based technologies. It is now becoming increasingly clear that digitization is also changing existing structures of social inequality and that new structures of digital inequality are emerging. This is shown by a growing number of recent individual studies. In this paper, we set ourselves the task of systematizing this new research within the framework of an empirically supported literature review. To do so, we use the PRISMA model for literature reviews and focus on three central dimensions of inequality - ethnicity, gender, and age - and their relevance within the discourse on digitization and inequality. The empirical basis consists of journal articles published between 2000 and 2020 and listed on the Web of Science, as well as an additional Google Scholar search, through which we attempt to include important monographs and contributions to edited volumes in our analyses. Our text corpus thus comprises a total of 281 articles. Empirically, our literature review shows that unequal access to digital resources largely reproduces existing structures of inequality; in some cases, studies report a reduction in social inequalities as a result of the digitization process. KW - age KW - digitization KW - ethnicity KW - gender social inequality KW - social inequality Y1 - 2023 U6 - https://doi.org/10.31235/osf.io/k2zwh PB - Center for Open Science CY - [Charlottesville, VA] ER - TY - INPR A1 - Vasiliev, Serguei A1 - Tarkhanov, Nikolai Nikolaevich T1 - Construction of series of perfect lattices by layer superposition N2 - We construct a new series of perfect lattices in n dimensions by the layer superposition method of Delaunay-Barnes. T3 - Preprints des Instituts für Mathematik der Universität Potsdam - 5 (2016)11 KW - lattice packing and covering KW - polyhedra and polytopes KW - regular figures KW - division of spaces Y1 - 2016 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-100591 SN - 2193-6943 VL - 5 IS - 11 PB - Universitätsverlag Potsdam CY - Potsdam ER - TY - INPR A1 - Thiessenhusen, Kai-Uwe A1 - Esposito, Larry W. A1 - Kurths, Jürgen A1 - Spahn, Frank T1 - Detection of hidden resonances in Saturn's B-ring N2 - The Voyager 2 Photopolarimeter experiment has yielded the highest resolved data of Saturn's rings, exhibiting a wide variety of features. The B-ring region between 105000 km and 110000 km distance from Saturn has been investigated. It has a high matter density and contains no significance features visible by eye. Analysis with statistical methods has let us to the detection of two significant events. These features are correlated with the inner 3:2 resonances of the F-ring shepherd satellites Pandora and Prometheus, and may be evidence of large ring paricles caught in the corotation resonances. T3 - NLD Preprints - 13 KW - Planetary Rings Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-13618 ER - TY - INPR A1 - Thieme, Holm A1 - Mehrholz, Jan A1 - Pohl, Marcus A1 - Behrens, Johann A1 - Dohle, Christian T1 - Mirror therapy for improving motor function after stroke T2 - Stroke : a journal of cerebral circulation Y1 - 2013 U6 - https://doi.org/10.1161/STROKEAHA.112.673087 SN - 0039-2499 VL - 44 IS - 1 SP - E1 EP - E2 PB - Lippincott Williams & Wilkins CY - Philadelphia ER - TY - INPR A1 - Thieken, Annegret A1 - Mariani, S. A1 - Longfield, S. A1 - Vanneuville, W. T1 - Preface: Flood resilient communities - managing the consequences of flooding T2 - Natural hazards and earth system sciences Y1 - 2014 U6 - https://doi.org/10.5194/nhess-14-33-2014 SN - 1561-8633 VL - 14 IS - 1 SP - 33 EP - 39 PB - Copernicus CY - Göttingen ER -