In the numerical treatment of integral equations of the first kind using boundary element methods (BEM), the author and E. P. Stephan have derived a posteriori error estimates as tools for both reliable computation and self-adaptive mesh refinement. So far, efficiency of those a posteriori error estimates has been indicated by numerical examples in model situations only. This work affirms effic...

Causal queries about singular cases are ubiquitous, yet the question of how we assess whether a particular outcome was actually caused by a specific potential cause turns out to be difficult to answer. Relying on the causal power framework (Cheng, ), Cheng and Novick () proposed a model of causal attribution intended to help answer this question. We challenge this model, both conceptually and e...

In this paper, we intend to discuss if and in what sense semiosis (meaning process, cf. C.S. Peirce) can be regarded as an “emergent” process in semiotic systems. It is not our problem here to answer when or how semiosis emerged in nature. As a prerequisite for the very formulation of these problems, we are rather interested in discussing the conditions which should be fulfilled for semiosis to...

We study the problem of computing the diameter of a network in a distributed way. The model of distributed computation we consider is: in each synchronous round, each node can transmit a different (but short) message to each of its neighbors. We provide an Ω̃(n) lower bound for the number of communication rounds needed, where n denotes the number of nodes in the network. This lower bound is vali...

We investigate various mean value problems involving order three primitive Dirichlet characters. In particular, we obtain an asymptotic formula for the first moment of central values of the Dirichlet L-functions associated to this family, with a power savings in the error term. We also obtain a large-sieve type result for order three (and six) Dirichlet characters.

This issue of Philosophical Transactions examines the relationship between scientific uncertainty about climate change and knowledge. Uncertainty is an inherent feature of the climate system. Considerable effort has therefore been devoted to understanding how to effectively respond to a changing, yet uncertain climate. Politicians and the public often appeal to uncertainty as an argument to del...

Yunus Emre Enstitüsü tarafından yayımlanan Kraliyet Aşçıbaşısı Friedrich Naumann’ın Günlüğü (Das Tagebuch des Naumann: Reisebeschreibungen eines kaiserlichen Leibkochs. Für das Brandenburg-Preussen Museum Wustrau und Institut herausgegeben eingeleitet von Stephan Theilg Michael Röling, Freiburg in Breisgau: Rombach Verlag, 2015), Kübra Küçük Türkçe’ye çevrilmiş bulunmaktadır. Redaksiyon işini M...

Hannah Gola ([email protected]) Harald Engler ([email protected]) Annette Sommershof ([email protected]) Hannah Adenauer ([email protected]) Stephan Kolassa ([email protected]) Manfred Schedlowski ([email protected]) Marcus Groettrup ([email protected]) Thomas Elbert ([email protected]) Iris-Tatjana Kolass...

Information Technology and Corporate Profitability: A Focus on Operating Efficiency Stephan Kudyba, New Jersey Institute of Technology, USA Donald Vitaliano, Rensselaer Polytechnic Institute, USA This work involves an empirical analysis, incorporating firm-level investment in information technology and financial statement information. The results indicate that IT can enhance firm level profitab...

Inhibition of oxidative stress in cholinergic projection neurons fully rescues aging1 associated olfactory circuit degeneration in Drosophila 2 Ashiq Hussain*, Atefeh Pooryasin*, Mo Zhang*, Laura F. Loschek, Marco La Fortezza, Anja 3 B. Friedrich, Catherine-Marie Blais, Habibe K. Üçpunar, Vicente A. Yépez, Martin Lehmann, 4 Nicolas Gompel, Julien Gagneur, Stephan J. Sigrist and Ilona C. Grunwal...