Externe Publikationen
Refine
Year of publication
Document Type
- Article (596)
- conference proceeding (article) (458)
- Part of a Book (207)
- conference proceeding (presentation, abstract) (73)
- Book (55)
- conference talk (41)
- Report (32)
- Review (19)
- Working Paper (17)
- Doctoral Thesis (13)
Language
Is part of the Bibliography
- no (1548)
Keywords
- Gebärmutterhalskrebs (14)
- additive manufacturing (14)
- Bemessung (11)
- Finite Elemente (11)
- Nichtlinearität (10)
- Politische Bildung (10)
- Stabilität (10)
- Betonbauteil (9)
- Bewehrung (9)
- Kohlenstofffaserverstärkter Kunststoff (9)
Institute
- Fakultät Sozial- und Gesundheitswissenschaften (507)
- Fakultät Informatik und Mathematik (334)
- Fakultät Maschinenbau (271)
- Labor Empirische Sozialforschung (163)
- Institut für Sozialforschung und Technikfolgenabschätzung (IST) (158)
- Fakultät Bauingenieurwesen (134)
- Fakultät Angewandte Natur- und Kulturwissenschaften (110)
- Labor für Technikfolgenabschätzung und Angewandte Ethik (LaTe) (109)
- Regensburg Center of Health Sciences and Technology - RCHST (72)
- Fakultät Business and Management (61)
Begutachtungsstatus
- peer-reviewed (331)
- begutachtet (32)
Der Beitrag fokussiert die Bedeutung von Zeit für die politische Erwachsenenbildung. Angesichts aktueller soziokultureller und sozioökonomischer Herausforderungen - besonders: der Ökonomisierung und Beschleunigung im Kontext von Bildung und Lernen - ergeben sich eine ganze Reihe von drängenden Zeitfragen. Der Bedeutung von Zeit wird in der Erwachsenenbildung und der Politischen Bildung jedoch bisher wenig Aufmerksamkeit geschenkt. Aus diesem Grund wird diese Fragestellung im Beitrag vertieft. Erstens werden die Situation der politischen Erwachsenenbildung und zweitens der Forschungsstand untersucht. Ausgehend von den Befunden werden drittens drei Zugänge herausgearbeitet, welche die Bedeutung von Zeit für die politische Erwachsenenbildung sichtbar machen: Politische Bildung als Prozess und Verzögerung sowie Zeit als Gegenstand, um die Zeitlichkeit von Gesellschaft und Politik zu verstehen und zu beurteilen, um sich an der Gestaltung der Zeitstrukturen zu beteiligen. Der Beitrag endet mit einem Ausblick und offenen Fragen, die sich an die zeittheoretischen Überlegungen anschließen.
The article focusses on the importance of time for the political adult education. Current socio-cultural and socio-economic challenges – in particular: the commodification and acceleration in the context of education and learning – results in a wide range of pressing time issues. However the adult education und the political education pay little attention to the importance of time. For this reason, this issue will be deepened in the article. First, the situation of the political adult education and secondly, the state of research are examined. On the base of the findings, three approaches are pointed out, which emphasize the importance of time for the political adult education: political education as a process and as a deceleration and also as a subject to understand and judge the temporality of politics and society as a necessary condition to participate in shaping the time structures. The paper ends with an outlook and open-ended questions, which adjoin the time theoretical considerations.
Der vorliegende Beitrag stellt schulpädagogische Überlegungen zur Bedeutung von Zeit für gute Schulen an. Anhand von theoretischen und praktischen Ansätzen wird der Frage nachgegangen, welche Rolle Zeit beim Lehren und Lernen spielt und welche Konsequenzen sich daraus aus der Perspektive der Schulpädagogik ziehen lassen.
In a three-guide coupler with multimode central waveguide, more than two modes of the entire structure participate in the coupling between the outer waveguides. Using a three-mode approximation we found simple conditions for complete power transfer between the outer waveguides: the device length has to match certain multiples of the con- ventionally defined coupling length. The specific form of the relevant modes allows us to design a magneto-optic isolator or circulator with significantly reduced device length (as compared to the conventional nonreciprocal coupler). The performance of the proposed devices is simulated by propagating-mode calculations. Estimates for admissible fabrication tolerances for the layer thicknesses are presented.
In diesem Beitrag werden empirische Perspektiven auf die politische Bildungspraxis mit Erwachsenen in Zeiten von Angst und Unsicherheit diskutiert. Dabei liegt die Annahme zugrunde, dass politische Bildungsarbeit mit Erwachsenen unter widrigen Bedingungen geleistet werden muss. Dieser Standpunkt stützt sich einerseits auf den Fachdiskurs, Positionspapiere von Fachverbänden und Erfahrungsberichte, andererseits auf die Ergebnisse aus qualitativen Untersuchungen der Verfasserin und des Verfassers dieses Beitrags.
Projection before Analysis
(2009)
The low-cycle and high-cycle fatigue behavior of the Mg-base wrought alloy AZ31 is investigated in the temperature range 20– 300 °C using total-strain-controlled push – pull tests. It is shown that the mechanical properties of the material are substantially influenced by the direction dependent formation of deformation twins and resulting deformation asymmetry. As a consequence tensile mean stresses develop during total-strain-controlled fatigue tests without mean strain.
Effects of Deep Rolling on the Fatigue Behavior of Ti-6Al-4V at Ambient and Elevated Temperatures
(2003)
Several specimens of AZ31 magnesium alloy were taken in different directions from a rolled plate and subjected to tensile, compressive and four-point bending tests. Tensile and compressive tests allowed to characterize the mechanical properties of the material in the rolling and cross rolling directions. The bending tests were carried out in four different specimen types to take the effect of the anisotropy induced by the rolling procedure itself into account. Six strain gages per specimen allowed to observe the evolution of the strain with the bending moment during the tests. All bending specimens were bent until a total compressive deformation of 2.5 %. It was observed that the corresponding tensile strain was significant lower and slightly different for each specimen type. In addition, a characteristic non-uniform distribution of deformation twinning was observed. The induced residual stresses after bending were characterized by X-ray diffraction (XRD) and incremental hole-drilling (IHD). Due to the different mechanical behavior in tension and compression, an asymmetric residual stress distribution after bending could be observed. The neutral axis was, in all cases, shifted towards the tensile side. This observation agrees with the strain measurements during bending tests.
Attention! Please!
(2018)
Unternehmen stehen unter dem stetigen Druck, innovativ zu sein. Das gelingt nur, wenn Mitarbeiterinnen und Mitarbeiter die neuen Ideen auch umsetzen. Gerade in Zeiten, in denen eine Innovation auf die nächste folgt, wird das aber immer schwieriger. Denn die Frequenz und die Erfolgsrate von Innovationen werden von der Belegschaft bewertet und bestimmen über das Engagement in nachfolgenden Innovationsprozessen.
In diesem Beitrag werden empirische Perspektiven auf die politische Bildungspraxis mit Erwachsenen in Zeiten von Angst und Unsicherheit diskutiert. Dabei liegt die Annahme zugrunde, dass politische Bildungsarbeit mit Erwachsenen unter widrigen Bedingungen geleistet werden muss. Dieser Standpunkt stützt sich einerseits auf den Fachdiskurs, Positionspapiere von Fachverbänden und Erfahrungsberichte, andererseits auf die Ergebnisse aus qualitativen Untersuchungen der Verfasserin und des Verfassers dieses Beitrags.
We investigate a system of two waveguides with leaky modes sharing a common substrate (radiatively coupled waveguides). The main advantage of such a system is the possibility of remote coupling. A perturbation theory is developed for both TE and TM polarization. Numerical calculations of dispersion curves and of the coupling length allow us to determine the limitations of the perturbation theory. We study the influence of multimode interference on the process of beating by considering the propagation of a given initial field. Finally, we propose a new design for an effective, integrated optical TE-TM polarization splitter.
Three-guide couplers with multimode central waveguides allow for remote coupling between optical channels. A simple three mode approximation turns out to be sufficient for the description of the main features of the power transfer behavior. The specific form of the relevant modes suggests the design of integrated optical isolators and circulators based on magnetic garnet materials. These novel devices are superior to conventional nonreciprocal couplers with respect to the total length and admissible fabrication tolerances. We characterize the isolation performance and the transmission loss for the proposed devices by propagating mode simulations and estimate the influence of geometry parameter deviations.
Design Research in Germany?
(2015)
Each particular implementation of the beam propagation method (BPM) requires a special procedure allowing for radiation to leave the computational window. We propose a new approach to constructing the finite difference schemes of the BPM at the boundary of the computational window. These schemes are independent of the computed fields and allow for a similar treatment of both interior and boundary points. The new approach can be further improved by correcting the field values at the boundary points according to Hadley's method. The algorithm is easy to implement for both two- and three-dimensional structures. The new method considerably reduces computation times because the propagation matrices remain constant in longitudinally invariant sections, thus avoiding repeated LU-decompositions. The basic idea-establishing the finite difference scheme such that locally exact, approximate, or plausible solutions are recovered-may be of interest for other efforts to solve partial differential equations by the finite difference method.
Politikdidaktik und Zeit
(2012)
Effective coupling between two remote optical waveguides without branching sections can be achieved in a three-guide system with multimode central waveguide. We investigate the nonlinear power switching of c.w. laser radiation by such radiatively coupled waveguides. It is shown that effective all-optical switches with spatially well separated input/output channels can be realized although the influence of multimode interference on the switching characteristics becomes more pronounced for increasing thickness of the central guide. Different coupling regimes are specified, and the changes in switching characteristics during the transformation from one regime to another is studied. Numerical calculations for the critical power are compared with an approximate analytical expression. It is also shown that, at a moderate input power, a small number of modes determines the switching behavior.
Dieser Beitrag ist als Theorie-Praxis-Reflexion ausgelegt, die auf einem Vortrag mit anschließender Gruppendiskussion mit Bildungspraktikern der katholischen Erwachsenenbildung basiert. Im Mittelpunkt steht die Frage, welche Aufgaben sich für die politische Bildungsarbeit mit Erwachsenen in der momentanen Situation ergeben.
Right-wing populism challenges the societies in Europe. The rise of such movements and parties are a threat to peace and democracy in Germany. This article focuses the possibilities as well as the boundaries of political education under the current circumstances. To this end, it discusses theoretical explanations based on approaches in peace education, political didactics and social sciences to deal with right-wing populism in practice. (DIPF/Orig.).
The performance of nanoelectronic and molecular electronic devices relies strongly on the employed functional units and their addressability, which is often a matter of appropriate interfaces and device design. Here, we compare two promising designs to build solid-state electronic devices utilizing the same functional unit. Optically addressable Ru-terpyridine complexes were incorporated in supramolecular wires or employed as ligands of gold nanoparticles and contacted by nanoelectrodes. The resulting small-area nanodevices were thoroughly electrically characterized as a function of temperature and light exposure. Differences in the resulting device conductance could be attributed to the device design and the respective transport mechanism, that is, thermally activated hopping conduction in the case of Ru-terpyridine wire devices or sequential tunneling in nanoparticle-based devices. Furthermore, the conductance switching of nanoparticle-based devices upon 530 nm irradiation was attributed to plasmon-induced metal-to-ligand charge transfer in the Ru-terpyridine complexes used as switching ligands. Finally, our results reveal a superior device performance of nanoparticle-based devices compared to molecular wire devices based on Ru-terpyridine complexes as functional units.
Der Zeitdruck steigt, auch in Schulen und Parlamenten. Das beklagen Viele. Ist diese Klage berechtigt? Dient das Bemühen um Zeit-ersparnis im Kontext von Bildung und Politik tatsächlich den Zielen, die dabei erreicht werden sollen? Wie groß sind die Risiken der Beschleunigung hinsichtlich der Qualität der Ergebnisse, nämlich der Formung der individuellen Persönlichkeit des Menschen wie des politischen Willens der Gesellschaft? Verstärkt der Zeitdruck die Tendenz zu Oberflächlichkeit und Kurzsichtigkeit? Welche Maßstäbe für einen wünschenswerten Umgang mit Zeit gibt es eigentlich? Unter welchen Voraussetzungen können Mündigkeit und Menschenwürde, Verantwortungsbereitschaft und Gemeinwohl, Zukunftskompetenz und Nachhaltigkeit wirklich heranreifen? Die Autoren mit unterschiedlichem professionellen Hintergrund aus Wissenschaft und Praxis zeichnen ein vielschichtiges und mehrdimensionales Bild des Faktors Zeit und diskutieren, was dieser für Bildung, Politik und politische Bildung bedeutet. (DIPF/Verlag).
„Politiker sind doch eh nicht unabhängig“ oder: Alltagshelden im Umgang mit Stammtischparolen
(2019)
In Deutschland stellte Armut vor allem dann ein größeres öffentliches Thema dar, wenn die Bundesregierung den neuen Bericht über „Lebenslagen in Deutschland“, also den landläufig sogenannten „Armuts- und Reichtumsbericht“, herausbrachte. Das hat sich in den letzten Jahren geändert: Mit dem Auftreten von „Patriotische Europäer gegen die Islamisierung des Abendlandes“ (Pegida) und der „Alternative für Deutschland“ (AfD) sind prekäre Lebenslagen in Politik und den Medien ein zentrales Thema, das vor allem unter dem Schlagwort „die Sorgen und Ängste der Menschen ernst nehmen“ diskutiert wird. Im Frühjahr schließlich erreichte diese Debatte ihren (vorläufigen) Höhepunkt als Reaktion auf den Beschluss der Essener Tafel, vorerst keine Migranten/innen mehr aufzunehmen. Grund genug also, sich aus wissenschaftlicher Perspektive mit dem Phänomen auseinanderzusetzen.
Die Dissertationsschrift „Armut als Gegenstand der Ethik. Eine Rechte- und Pflichtenanalyse“ behandelt das Thema aus philosophischer Sicht. Ziel ist die Entwicklung von „Kriterien und Anforderungen […], denen jedwede Ausgestaltung eines menschenwürdigen sozialen Minimums gerecht werden muss“ (S. 12). Anhand dieser soll schließlich beurteilt werden können, „inwieweit ein in der Sozialpolitik und -gesetzgebung oder in der empirischen Sozialforschung verwendetes Armutsverständnis einer kritischen moralischen Überprüfung standhält oder sich als korrektur- und ergänzungsbedürftig erweist“ (ebd.).
Im Rahmen eines Forschungsprojektes soll eine Plattform für die Vermittlung von Telekonsilen und die Bereitstellung einer Konsilakte an die Telematik-Infrastruktur (TI) angeschlossen werden. Um sowohl eine bestmögliche Skalierbarkeit als auch eine optimale Integrierbarkeit in bestehende Systeme und Anwendungen zu erreichen, wurde HL7 FHIR als syntaktischer Standard für das Reha-Konsil festgelegt. Dieses Dokument liefert einen systematischen Überblick über die notwendigen Schritte und Voraussetzungen, um diesen Anschluss zu bewerkstelligen.
Purpose
The purpose of this paper is to explore the impact of information technology (IT) on supply chain performance in the automotive industry. Prior studies that analyzed the impact of IT on supply chain performance report results representing the situation of the “average industry.” This research focuses on the automotive industry because of its major importance in many national economies and due to the fact that automotive supply chains do not represent the supply chain of the average industry.
Design/methodology/approach
A research model is proposed to examine the relationships between IT capabilities, supply chain capabilities, and supplier performance. The model divides IT capabilities into functional and data capabilities, and supply chain capabilities into internal process excellence and information sharing. Data have been collected from 343 automotive first-tier suppliers. Structural equation modeling with partial least squares is used to analyze the data.
Findings
The results suggest that functional capabilities have the greatest impact on internal process excellence, which in turn enhances supplier performance. However, frequent and adequate information sharing also contributes significantly to supplier performance. Data capabilities enable supply chain capabilities through their positive impact on functional capabilities.
Practical implications
The findings will help managers to understand the effect of IT implementation on company performance and to decide whether to invest in the expansion of IT capacities.
Originality/value
This research reports the impact of IT on supply chain performance in one of the most important industries in many industrialized countries, and it provides a new perspective on evaluating the contribution of IT on firm performance.
Design Research in Germany?
(2015)
Kombinationen aus kraft- und formschlüssigen Verbindungen erhöhen die Leistung bei im Hybridguss verbundenen Gussteilen mit Anbau- oder Einlegeteilen und machen separate Fügeprozesse überflüssig. Simulations-Methoden unterstützen das Design kraft- und formschlüssiger Verbindungen. Ergebnisse eines Ausdrückversuchs zeigen eine relativ gute Übereinstimmung zwischen gemessenen und mittels Simulation ermittelten Kraft-Weg-Kurven.
Mechanical surface treatments such as deep rolling or laser-shock peening can markedly affect the cyclic performance of light-weight alloys, especially if significant thick work hardened surface regions are induced. At room temperature, the cyclic deformation behaviour is strongly influenced by the nature of the induced near-surface microstructures provided that they remain stable during fatigue loading. At elevated temperatures, the stability of near-surface work hardening and local microstructures plays an even more important role since the process-induced residual compressive stresses are likely to anneal out partially or completely. This overview illustrates to what extent deep rolling can effect the cyclic performance of various wrought light alloys being fatigue loaded in stress control at ambient and elevated temperatures.
Bauteilfertigung
(2009)
Patterns of morbidity and health care needs are changing as the proportion of the population reaching old age increases. A particular challenge to the health care system results from coexisting health problems (multimorbidity) among the elderly. Regarding prevention and treatment goals, the focus needs to shift from disease-specific outcomes to function in daily life and subjective outcome dimensions, such as self-determination (autonomy), social participation, and quality of life. Health research faces the task of developing prevention and health care models adapted to the needs of specific subgroups of older people. Strengthening personal, social, and organizational resources is crucial. This requires precise knowledge about the development, course, and main determinants of disease processes based on observational epidemiological studies. Strategies need to be tested in intervention and evaluation studies with respect to efficacy, effectiveness, and efficiency. A targeted research funding program “Health in older age” was initiated by the Federal Ministry of Education and Research and is currently funding six multimorbidity research consortia, which are briefly presented here.
We describe ongoing and proposed work concerning incremental prosody extraction and classification for a spoken dialogue system. The system described will be tightly integrated with the SDS's speech recogntion which also works incrementally. The proposed architecture should allow for more control over the user interaction experience, for example allowing more precise and timely end-of-utterance vs. hesitation distinction, and auditive or visual back-channel generation.
Ideally, a spoken dialogue system should react without much delay to a user’s utterance. Such a system would already select an object, for instance, before the user has finished her utterance about moving this particular object to a particular place. A prerequisite for such a prompt reaction is that semantic representations are built up on the fly and passed on to other modules. Few approaches to incremental semantics construction exist, and, to our knowledge, none of those has been systematically tested on a spontaneous speech corpus. In this paper, we develop measures to test empirically on transcribed spontaneous speech to what extent we can create semantic interpretation on the fly with an incremental semantic chunker that builds a frame semantics.
We define the task of incremental or 0-lag utterance segmentation, that is, the task of segmenting an ongoing speech recognition stream into utterance units, and present first results. We use a combination of hidden event language model, features from an incremental parser, and acoustic / prosodic features to train classifiers on real-world conversational data (from the Switchboard corpus). The best classifiers reach an F-score of around 56%, improving over baseline and related work.
The anisotropy ΔS of the thermopower in thin films of the high-Tc superconductor Bi2Sr2CaCu2O8 is investigated using off–c-axis epitaxial film growth and the off-diagonal Seebeck effect. The measurements represent a new method for the investigation of anisotropic transport properties in solids, taking advantage of the availability of oriented grown crystalline thin films instead of using bulk crystals. First results for the temperature dependence ΔS(T) in Bi2Sr2CaCu2O8 thin films are presented and described within a two-band model. Subjecting the films to heat treatments in different gases at relatively low temperatures, ΔS could reversibly be changed in a wide range.
Laterally coupled distributed feedback lasers with self-aligned ohmic contacts show the advantage of a considerably simplified fabrication process. These lasers exhibit superior spectral properties with full benefit from the gain coupling mechanism. Side-mode suppression ratios up to 55- and 3-dB bandwidths beyond 15 GHz were obtained for these devices.