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Bochum-Hordel, Germany

Vogt C.,Bochum University of Applied Sciences
Environmental and Resource Economics | Year: 2016

In this paper, we study the formation of international climate coalitions in the case players are perfectly heterogeneous and inequality averse. The paper provides an analytical solution for the optimal contribution of an arbitrary coalition member to a linear and pure public good. Based on empirical estimates for the parameters the model is then applied to the problem of climate mitigation policies. We provide a full stability analysis of all coalitions that can be formed by the twelve world regions from Nordhaus’ RICE model. As it turns out, only four two-player coalitions are internally stable. For a wealthy country leaving a coalition, its absolute payoff increases more than its disutility from additional advantageous inequality. A poor country improves its welfare by dropping out since its absolute payoff increases and, at the same time, disutility from disadvantageous inequality is reduced. Introducing suitable transfer schemes, however, large coalitions consisting of economically divergent countries turn out to be internally stable. © 2016 Springer Science+Business Media Dordrecht


Selbmann K.,Bochum University of Applied Sciences
Environmental Values | Year: 2015

Within the EU, Germany took a pioneering role in the production and promotion of biofuels. To explain this role the article analytically examines public discourses on biofuels. The analysis points out how the subject is interpreted and positioned by relevant actors and thus results in a specific public perception of biofuels in Germany. This perception in turn influences political decision-making processes. Since the analysis of discourses contributes to a better understanding of today’s biofuel policy in Germany, the article characterises the biofuel discourse during the genesis of this policy. Additionally, it analytically traces changes of discourse constellations in the course of the biofuel policy path. © 2015 The White Horse Press.


Baitsch M.,Bochum University of Applied Sciences | Le K.C.,Ruhr University Bochum | Tran T.M.,Ruhr University Bochum
International Journal of Engineering Science | Year: 2015

Abstract Within the recently proposed continuum dislocation theory, numerical simulations of the displacement controlled wedge indentation for single crystals using the finite elements are provided. Under the assumption of plane strain deformation of the crystal having only one active slip system on each side of the wedge the load-displacement curve as well as the dislocation density are computed for the loading and unloading path in terms of the indentation depth. The results of numerical simulations are compared with those obtained from the experiments which shows qualitative agreement. © 2015 Elsevier Ltd.


Foster C.,University of Wisconsin-La Crosse | De Koning J.J.,VU University Amsterdam | Thiel C.,Bochum University of Applied Sciences
International Journal of Sports Physiology and Performance | Year: 2014

The official world records (WR) for the 1-mile run for men (3: 43.13) and for women (4: 12.58) have improved 12.2% and 32.3%, respectively, since the first WR recognized by the International Association of Athletics Federations. Previous observations have suggested that the pacing pattern for successive laps is characteristically faster-slower-slowest-faster. However, modeling studies have suggested that uneven energy-output distribution, particularly a high velocity at the end of the race, is essentially wasted kinetic energy that could have been used to finish sooner. Here the authors report that further analysis of the pacing pattern in 32 men's WR races is characterized by a progressive reduction in the within-lap variation of pace, suggesting that improving the WR in the 1-mile run is as much about how energetic resources are managed as about the capacity of the athletes performing the race. In the women's WR races, the pattern of lap times has changed little, probably secondary to a lack of depth in the women's fields. Contemporary WR performances have been achieved a coefficient of variation of lap times on the order of 1.5-3.0%. Reasonable projection suggests that the WR is overdue for improving and may require lap times with a coefficient of variation of ∼1%. © 2014 Human Kinetics, Inc.


Klingspor V.,Bochum University of Applied Sciences
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2016

In recent years, various socio-political debates and scandals have raised old and new questions regarding data protection that, among other things, will also lead to new European legislation initiatives. However relevant each issue may be, there is far too little discussion in the public which potentials, be it positive or negative, exist with the possibility of combining data from different sources. In this article I want to give a non-exhaustive overview of the manner in which such information about everyone of us is collected today, before I discuss the social risks this may entail. I close the article with some theses outlining a path that helps to protect the rights of freedom of the citizens despite the extensive collection and analysis of data (My heartfelt thanks goes to Edward Sodmann for proofreading this text. He required tons of hours to generate something from my text, that can be understood at all.). © Springer International Publishing Switzerland 2016.

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