TY - GEN A1 - Ungelenk, Johannes T1 - Narcissus and Echo BT - A Political Reading of George Eliot's Daniel Deronda N2 - George Eliot’s late novel Daniel Deronda tackles big, fundamental political questions that radiate from the societal circumstances of the novel’s production and reach deep into our present-day life. The novel critically analyses the capitalistic, morally flawed and standard-less English society and narrates the title hero’s proto-Zionist mission to found a Jewish nation that re-establishes history, meaning and ethical values. This study attempts to trace the novel’s two models of society and time by bringing them into resonance with the myth of Narcissus and Echo famously rendered by Ovid. The unloving, self-referential, visual Narcissus is read as the model for the capitalistic world of spectacle and speculation. Echo’s loving, memory-bearing voice forms an important part in the construction of the sublating unity of the Jewish nation-to-come. Guided by this resonance between George Eliot’s novel and Ovid’s myth pieces of critical theory and philosophy are woven into the study’s fabric. The resulting analysis dissects and deconstructs the novel’s fascinating and highly complex patterns of conditions of possibility for the fabrication of the redeeming Jewish nation, the very same conditions that the novel presents as the conditions of possibility for narrating a meaningful story. T3 - Zweitveröffentlichungen der Universität Potsdam : Philosophische Reihe - 186 Y1 - 2012 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-599966 SN - 1866-8380 IS - 186 ER - TY - GEN A1 - Mardoukhi, Yousof A1 - Jeon, Jae-Hyung A1 - Metzler, Ralf T1 - Geometry controlled anomalous diffusion in random fractal geometries BT - looking beyond the infinite cluster T2 - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe N2 - We investigate the ergodic properties of a random walker performing (anomalous) diffusion on a random fractal geometry. Extensive Monte Carlo simulations of the motion of tracer particles on an ensemble of realisations of percolation clusters are performed for a wide range of percolation densities. Single trajectories of the tracer motion are analysed to quantify the time averaged mean squared displacement (MSD) and to compare this with the ensemble averaged MSD of the particle motion. Other complementary physical observables associated with ergodicity are studied, as well. It turns out that the time averaged MSD of individual realisations exhibits non-vanishing fluctuations even in the limit of very long observation times as the percolation density approaches the critical value. This apparent non-ergodic behaviour concurs with the ergodic behaviour on the ensemble averaged level. We demonstrate how the non-vanishing fluctuations in single particle trajectories are analytically expressed in terms of the fractal dimension and the cluster size distribution of the random geometry, thus being of purely geometrical origin. Moreover, we reveal that the convergence scaling law to ergodicity, which is known to be inversely proportional to the observation time T for ergodic diffusion processes, follows a power-law ∼T−h with h < 1 due to the fractal structure of the accessible space. These results provide useful measures for differentiating the subdiffusion on random fractals from an otherwise closely related process, namely, fractional Brownian motion. Implications of our results on the analysis of single particle tracking experiments are provided. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 980 KW - plasma-membrane KW - mechanisms KW - motion KW - nonergodicity KW - models Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-474864 SN - 1866-8372 IS - 980 SP - 30134 EP - 30147 ER - TY - GEN A1 - Gebel, Arnd A1 - Lüder, Benjamin A1 - Granacher, Urs T1 - Effects of Increasing Balance Task Difficulty on Postural Sway and Muscle Activity in Healthy Adolescents T2 - Postprints der Universität Potsdam Humanwissenschaftliche Reihe N2 - Evidence-based prescriptions for balance training in youth have recently been established. However, there is currently no standardized means available to assess and quantify balance task difficulty (BTD). Therefore, the objectives of this study were to examine the effects of graded BTD on postural sway, lower limb muscle activity and coactivation in adolescents. Thirteen healthy high-school students aged 16 to 17 volunteered to participate in this cross-sectional study. Testing involved participants to stand on a commercially available balance board with an adjustable pivot that allowed six levels of increasing task difficulty. Postural sway [i.e., total center of pressure (CoP) displacements] and lower limb muscle activity were recorded simultaneously during each trial. Surface electromyography (EMG) was applied in muscles encompassing the ankle (m. tibialis anterior, medial gastrocnemius, peroneus longus) and knee joint (m. vastus medialis, biceps femoris). The coactivation index (CAI) was calculated for ankle and thigh muscles. Repeated measures analyses of variance revealed a significant main effect of BTD with increasing task difficulty for postural sway (p < 0.001; d = 6.36), muscle activity (p < 0.001; 2.19 < d < 4.88), and CAI (p < 0.001; 1.32 < d < 1.41). Multiple regression analyses showed that m. tibialis anterior activity best explained overall CoP displacements with 32.5% explained variance (p < 0.001). The observed increases in postural sway, lower limb muscle activity, and coactivation indicate increasing postural demands while standing on the balance board. Thus, the examined board can be implemented in balance training to progressively increase BTD in healthy adolescents. T3 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 583 KW - balance training KW - balance strategy KW - muscle coactivation KW - youth KW - training intensity Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-439211 SN - 1866-8364 IS - 583 ER - TY - GEN A1 - Grafe, Marianne A1 - Batsios, Petros A1 - Meyer, Irene A1 - Lisin, Daria A1 - Baumann, Otto A1 - Goldberg, Martin W. A1 - Gräf, Ralph T1 - Supramolecular Structures of the Dictyostelium Lamin NE81 T2 - Potsprint der Universität Potsdam Mathematisch-Naturwissenschaftliche Reihe N2 - Nuclear lamins are nucleus-specific intermediate filaments (IF) found at the inner nuclear membrane (INM) of the nuclear envelope (NE). Together with nuclear envelope transmembrane proteins, they form the nuclear lamina and are crucial for gene regulation and mechanical robustness of the nucleus and the whole cell. Recently, we characterized Dictyostelium NE81 as an evolutionarily conserved lamin-like protein, both on the sequence and functional level. Here, we show on the structural level that the Dictyostelium NE81 is also capable of assembling into filaments, just as metazoan lamin filament assemblies. Using field-emission scanning electron microscopy, we show that NE81 expressed in Xenopous oocytes forms filamentous structures with an overall appearance highly reminiscent of Xenopus lamin B2. The in vitro assembly properties of recombinant His-tagged NE81 purified from Dictyostelium extracts are very similar to those of metazoan lamins. Super-resolution stimulated emission depletion (STED) and expansion microscopy (ExM), as well as transmission electron microscopy of negatively stained purified NE81, demonstrated its capability of forming filamentous structures under low-ionic-strength conditions. These results recommend Dictyostelium as a non-mammalian model organism with a well-characterized nuclear envelope involving all relevant protein components known in animal cells. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 682 KW - lamin KW - NE81 KW - Dictyostelium KW - nuclear envelope KW - nuclear lamina KW - expansion microscopy Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-425976 SN - 1866-8372 IS - 682 ER - TY - GEN A1 - Tremblay, Jean Christophe A1 - Blanco-Rey, Maria T1 - Manipulating interfacial hydrogens at palladium via STM N2 - In this contribution, we provide a detailed dynamical analysis of the interfacial hydrogen migration mediated by scanning tunneling microscopy (STM). Contributions from the STM-current and from the non-adiabatic couplings are taken into account using only first principle models. The slight asymmetry of the tunnelling rates with respect to the potential bias sign inferred from experimental observations is reproduced by weighting the contributions of the metal acceptor–donor states for the propagation of the impinging electrons. The quasi-thermal inelastic collision mechanism is treated perturbatively. The influence of hydrogen pre-coverage is also investigated using new potential energy surfaces obtained from periodic density functional theory calculations. Fully quantum dynamical simulations of the system evolution are performed by solving the Pauli master equation, providing insight into the reaction mechanism of STM manipulation of subsurface hydrogens. It is observed that the hydrogen impurity favors resurfacing over occupation of the bulk and subsurface sites whenever possible. The present simulations give strong indication that the experimentally observed protuberances after STM-excitation are due to hydrogen accumulating in the vicinity of the surface. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 291 Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-99511 ER - TY - GEN A1 - Thieken, Annegret A1 - Bessel, Tina A1 - Kienzler, Sarah A1 - Kreibich, Heidi A1 - Müller, Meike A1 - Pisi, Sebastian A1 - Schröter, Kai T1 - The flood of June 2013 in Germany BT - how much do we know about its impacts? T2 - National Hazards Earth System Science N2 - In June 2013, widespread flooding and consequent damage and losses occurred in Central Europe, especially in Germany. This paper explores what data are available to investigate the adverse impacts of the event, what kind of information can be retrieved from these data and how well data and information fulfil requirements that were recently proposed for disaster reporting on the European and international levels. In accordance with the European Floods Directive (2007/60/EC), impacts on human health, economic activities (and assets), cultural heritage and the environment are described on the national and sub-national scale. Information from governmental reports is complemented by communications on traffic disruptions and surveys of flood-affected residents and companies. Overall, the impacts of the flood event in 2013 were manifold. The study reveals that flood-affected residents suffered from a large range of impacts, among which mental health and supply problems were perceived more seriously than financial losses. The most frequent damage type among affected companies was business interruption. This demonstrates that the current scientific focus on direct (financial) damage is insufficient to describe the overall impacts and severity of flood events. The case further demonstrates that procedures and standards for impact data collection in Germany are widely missing. Present impact data in Germany are fragmentary, heterogeneous, incomplete and difficult to access. In order to fulfil, for example, the monitoring and reporting requirements of the Sendai Framework for Disaster Risk Reduction 2015–2030 that was adopted in March 2015 in Sendai, Japan, more efforts on impact data collection are needed. Y1 - 2016 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-97207 ER - TY - GEN A1 - Kroll, Alexander A1 - Krause, Tobias A1 - Vogel, Dominik A1 - Proeller, Isabella T1 - Was bestimmt die Reformbereitschaft von Führungskräften in der Ministerialverwaltung? N2 - Bestehende Forschung hat gezeigt, dass die Reformbereitschaft von Führungskräften eine wichtige Voraussetzung für die erfolgreiche Umsetzung von Veränderungsprojekten ist. Dieser Artikel geht der Frage nach, wie erklärt werden kann, warum einige Führungskräfte in der öffentlichen Verwaltung reformbereiter sind als andere. Er greift dabei auf eine Führungskräftebefragung aus dem Jahr 2010 zurück, die auf den Einschätzungen von 351 Verwaltungsmanagern aus der Ministerialverwaltung von Bund und Ländern basiert. Eine statistische Analyse dieser Daten kommt zu dem Ergebnis, dass die typische reformbereite Führungskraft intrinsisch motiviert ist, auf eine aufgabenorientierte Führung setzt sowie Arbeitserfahrung außerhalb der öffentlichen Verwaltung und keine juristische Ausbildung besitzt. Sie arbeitet auf oberer Hierarchieebene, ist jedoch eher mit Fach- als mit Führungsaufgaben beschäftigt. Der Artikel vertieft und erläutert diese Befunde sowie deren Implikationen für die Verwaltungspraxis. T3 - Zweitveröffentlichungen der Universität Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe - 75 KW - Reformbereitschaft KW - Führung KW - Ministerialverwaltung Y1 - 2012 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-94410 SP - 75 EP - 80 ER - TY - GEN A1 - Rauscher, Miriam A1 - Vogel, Dominik A1 - Reiners, Markus T1 - Mehrebenenperspektive bei der Institutionalisierung von mehr Servicequalität BT - Projekt D115 N2 - Der Beitrag konzentriert sich auf die neue einheitliche Behördenrufnummer D115, als aktuelles, innovatives eGovernment-Projekt der deutschen Verwaltungsmodernisierung. Als theoretische Grundlage der hier vorliegenden empirischen verwaltungswissen schaftlichen Analyse sekundiert der Multilevel-Governance-Ansatz, welcher die Mehrebenenverflechtung der politisch-administrativen Strukturen, die Vielschichtigkeit und die besondere Governancestruktur des Reformvorhabens am besten erfassen dürfte. Die Analyse der Funktionsweise der Behördenrufnummer D115, der beteiligten Akteure und deren institutionell bedingter Motivation kommt insgesamt zum Ergebnis, dass der Ansatz für das Modernisierungsprojekt als geradezu exemplarisch zu betrachten ist. Die Berücksichtigung des Mehrebenencharakters sowie der dabei zur Anwendung kommen den Netzwerk- und Steuerungsmechanismen sind bei einem solchen Projekt und künftigen eGovernment-Projekten unverzichtbar. T3 - Zweitveröffentlichungen der Universität Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe - 74 KW - E-Government KW - Verwaltungsmodernisierung KW - Multilevel-Governance KW - Behördenrufnummer D115 Y1 - 2011 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-94399 SP - 50 EP - 56 ER - TY - GEN A1 - Priewe, Marc T1 - Walter W. Woodward, Prospero´s America: John Winthrop, Jr., Alchemy, and the Creation of New England Culture, 1606-1676 / [rezensiert von] Marc Priewe N2 - Rezensiertes Werk: Walter W. Woodward: Prospero’s America: John Winthrop, Jr., Alchemy, and the Creation of New England Culture, 1606-1676. Chapel Hill: University of North Carolina Press, 2010. Hb. 336pp. ISBN 978-0-8078-3301-8. T3 - Zweitveröffentlichungen der Universität Potsdam : Philosophische Reihe - 104 Y1 - 2011 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-93713 SP - 199 EP - 200 ER - TY - GEN A1 - Gatzhammer, Stefan T1 - Commento alla sentenza del Landgericht Köln del 7 maggio 2012 in tema di circoncisione e commento alla nuova normativa § 1631d del codice civile tedesco (BGB) N2 - Kommentar zu § 1631d BGB (Beschneidung aus religiösen Gründen, elterliches Sorgerecht), Kommentar zum Urteil des Landgerichts Köln vom 7. Mai 2012 (Strafrecht, Religionsfreiheit) N2 - In May 2012 a misleading decision of the Landgericht (Court of Appeal) Cologne declared that male circumcision in children amounts to be a criminal offence, even if performed lege artis and with the consent of the parents. The article pays attention to the new legislation of December 2012 introduced into the BGB as a legal framework of male circumcision with regard to the right of freedom of religion and the parental rights in education especially for Jewish and Muslims in Germany. T3 - Zweitveröffentlichungen der Universität Potsdam : Rechtswissenschaftliche Reihe - 2 KW - Beschneidung aus religiösen Motiven KW - Religionsrecht KW - BGB KW - elterliches Sorgerecht KW - Strafrecht KW - male circumcision KW - religious law KW - German civil code KW - legal custody KW - criminal law Y1 - 2013 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-72075 ER -