56. Aktualisierungslieferung - §§ 14, 43, 52b, 62, 64 RStV

Book published by Jehle-Rehm (2013)

An analogue of Cobham's theorem for graph directed iterated function systems

Presentation (2013, December)

Advances in Applied Mechanics

Book published by Elsevier (2013)

Advances in Applied Mechanics draws together recent significant advances in various topics in applied mechanics. Published since 1948, Advances in Applied Mechanics aims to provide authoritative review ... [more ▼]

Advances in Applied Mechanics draws together recent significant advances in various topics in applied mechanics. Published since 1948, Advances in Applied Mechanics aims to provide authoritative review articles on topics in the mechanical sciences, primarily of interest to scientists and engineers working in the various branches of mechanics, but also of interest to the many who use the results of investigations in mechanics in various application areas, such as aerospace, chemical, civil, environmental, mechanical and nuclear engineering. [less ▲]

Challenges and potentials of computer-based testing of cross-curricular skills in large-scale assessments - what to expect in the next 10 years

Presentation (2013, December)

Suburbaner Raum im Lebenszyklus

Report (2013)

The central part of the study deals with the question of how to approach the temporarily differentiated development dynamics of suburban spaces within a systematic, conceptual analysis framework. The ... [more ▼]

The central part of the study deals with the question of how to approach the temporarily differentiated development dynamics of suburban spaces within a systematic, conceptual analysis framework. The temporal variation and trajectory analysis however remains descriptive in this study, as the method still has not been developed into an autonomous explanatory system. The study concentrates on the integration of the particular phases and cycles into a broader context of the suburban system and - as far as possible - to describe interdependencies of trigger factors as well as of the local and regional framework. This makes the approach different to a static spatial analysis. Those phases contain, in most cases, the Growth, Maturity, Transition and Resiliency. The latter describes the capability of a system to encounter decline or even to reach a development turn. The phases develop into cycles when temporal periodic changes occur, following a certain logic determined by definable factors and strategies. [less ▲]

Euro at Risk: The Impact of Member Countries' Credit Risk on the Stability of the Common Currency

Scientific Conference (2013, December)

A very good triple of operads

E-print/Working paper (2013)

Book review of Women's Movements and the Filipina: 1986-2008

in Asian Studies Review (2013), 37(4),

This book’s main focus is the “cultural” aspects of being and becoming a Filipino feminist. It sets out to articulate the “political” within the feminist agenda. The book, importantly, raises the question ... [more ▼]

This book’s main focus is the “cultural” aspects of being and becoming a Filipino feminist. It sets out to articulate the “political” within the feminist agenda. The book, importantly, raises the question “What is ‘Filipino’ feminism today?” Roces answers this question by highlighting three significant forces that have shaped its history, including the postcolonial condition, the national democratic struggle and western feminism, and the ways in which these forces intersect with the “Filipino feminist agenda”. [less ▲]

LTI Modell arbiträrer wechselrichtergeführter Inselnetze

in Automatisierungstechnik (2013), 61(12), 818-830

This paper presents the development of a control model for inverter driven island grids. The herein presented structured approach creates a multi voltage source inverter model from a single inverter state ... [more ▼]

This paper presents the development of a control model for inverter driven island grids. The herein presented structured approach creates a multi voltage source inverter model from a single inverter state space model and combines this with the node incidence matrix of a network into a compound model of an island grid. The presented approach allows to analyse arbitrary grid structures and different inverter models and it incorporates a large number of inverters. The model can be particularly used for ohmic-inductive low voltage lines. At the end of the article, a stability analysis of a sample network is presented. [less ▲]

Optimization of hard fusion based spectrum sensing for energy-constrained cognitive radio networks

in Physical Communication (2013), 9

The detection reliability of a cognitive radio network improves by employing a cooperative spectrum sensing scheme. However, increasing the number of cognitive radios entails a growth in the cooperation ... [more ▼]

The detection reliability of a cognitive radio network improves by employing a cooperative spectrum sensing scheme. However, increasing the number of cognitive radios entails a growth in the cooperation overhead of the system. Such an overhead leads to a throughput degradation of the cognitive radio network. Since current cognitive radio networks consist of low-power radios, the energy consumption is another critical issue. In this paper, throughput optimization of the hard fusion based sensing using the k-out-of-N rule is considered. We maximize the throughput of the cognitive radio network subject to a constraint on the probability of detection and energy consumption per cognitive radio in order to derive the optimal number of users, the optimal k and the best probability of false alarm. The simulation results based on the IEEE 802.15.4/ZigBee standard, show that the majority rule is either optimal or almost optimal in terms of the network throughput. [less ▲]