Economists use the word rational in a narrow way. To an economist, a rational actor is someone who makes decisions that maximize her (or his) preferences subject to constraints imposed by the environment. So, this actor knows her preferences and knows how to go about optimizing. It is a powerful approach, but it probably is only distantly related to what you mean when you think of yourself as r...

Introduction You and a friend walk outside on an April morning. You announce that the weather is “mild”. Your friend declares it “cold”. Who is wrong? Or are you both right? We all recognize that language can be imprecise and that words such as cold, hot, or mild do not have well-defined boundaries. In 1965, Lotfi Zadeh introduced fuzzy logic as a means of processing data by extending classical...

We report on our recent progress in the generation of resonant behavior in unitarized meson-meson scattering amplitudes obtained from Chiral Perturbation Theory. These amplitudes provide simultaneously a remarkable description of the resonance region up to 1.2 GeV as well as the low energy region, since they respect the chiral symmetry expansion. By studying the position of the poles in these a...

Tom Fennell1∗, P. P. Deen1, A. R. Wildes1, K. Schmalzl2, D. Prabhakaran3, A. T. Boothroyd3, R. J. Aldus4, D. F. McMorrow4, S. T. Bramwell4 Institut Laue-Langevin, Grenoble, France IFF, Forschungszentrum Juelich GmbH, JCNS at ILL, Grenoble, France Clarendon Laboratory, Oxford Physics, Park Road, Oxford, UK London Centre for Nanotechnology and Department of Physics and Astronomy, University Colle...

Web 2.0 and social network applications have become increasingly popular. It is important for these applications to help users in maintaining their social networks by providing functions on friend suggestion and friend browsing. However, little study in this area has been reported in the literature. This paper proposes the design of two modules for friend suggestion and friend browsing. The fir...

Donath et al. (2004) discuss social networking display as a whole, and its characteristic functions, affordances and constraints when existing in online environment. Focusing on the connections displayed as an integrated part of individual’s self-descriptive profiles, the authors analyze the psychology of establishing and managing one’s social networks within the framework of signaling theory. ...

We have previously shown that immunization with a synthetic peptide that contains a single CD4(+) T-cell epitope protects mice against immunosuppressive Friend retrovirus infection. Cells producing infectious Friend virus were rapidly eliminated from the spleens of mice that had been immunized with the single-epitope peptide. However, actual effector mechanisms induced through T-helper-cell res...