Nature of segregation of reactants in diffusion controlled A+B reactions: Role of mobility in forming compact clusters

We investigate the A+B=0 bimolecular chemical reaction taking place in low-dimensional spaces when the mobilities of the two reacting species are not equal. While the case of different reactant mobilities has been previously reported as not affecting the scaling of the reactant densities with time, but only the pre-exponential factor, the mechanism for this had not been explained before. By using Monte-Carlo simulations we show that the nature of segregation is very different when compared to the normal case of equal reactant mobilities. The clusters of the mobile species are statistically homogeneous and randomly distributed in space, but the clusters of the less mobile species are much more compact and restricted in space. Due to the asymmetric mobilities, the initial symmetric random density fluctuations in time turn into asymmetric density fluctuations. We explain this trend by calculating the correlation functions for the positions of particles for the several different cases

Cultural Variation in Response to Strategic Display of Emotions During Negotiations

This research employed two studies to examine how cultural values and norms influence the effectiveness of the strategic displays of emotions during negotiations. In cross-cultural settings, we evaluated whether the strategic display of emotion impacted the outcomes of negotiations. The display of positive emotion is consistent with the manner in which many Asian negotiators communicate respect through humility and deference. The major hypothesis is whether Asian negotiators who highly regard cultural values such as tradition and conformity would be more likely to accept an offer from an opposing party who displayed positive as opposed to negative emotion. Study 1 using Asian MBA students confirmed this hypothesis. Study 2 replicated this finding with a sample of Hong Kong executive managers and also found they were less likely to accept an offer from a negotiator displaying negative emotion than Israeli executive managers who did not hold humility and deference in such high regard. Outcome implications for strategic display of emotions in cross-cultural negotiations are discussed.http://deepblue.lib.umich.edu/bitstream/2027.42/49354/1/1064-Kopelman.pd

The Herdsman and the Sheep, Mouton, or Kivsa? The Influence of Group Culture on Cooperation in Social Dilemmas

This chapter suggests that it is important to incorporate the concept of culture into both the theoretical frameworks and the empirical research on cooperation in social dilemmas. It proposes a broader interpretation of the appropriateness framework (March, 1994) in decision making in social dilemmas (Messick, 1999; Weber, Kopelman, and Messick, 2004) that includes group culture. It does not diminish the contribution of the appropriateness framework that teases apart the identity from recognition of the situation and the relevant rules, but rather offers a model that also encompasses group culture as a distinct fourth construct. Thus, when faced with the choice to cooperate or defect, rather than being guided strictly by rational choice or expected utility models, a decision-maker may be best guided by the question: “what does a person like me do in a situation like this given this group culture?”http://deepblue.lib.umich.edu/bitstream/2027.42/49422/1/1066-Kopelman.pd

Benzene Vibrational Exciton Spectrum

A critical discussion of the infrared polarization assignments of Zwerdling and Halford, in view of the now accepted benzene crystal structure, leads to acceptance of their results, though with somewhat reduced credibility. The controversial 707‐cm−1 absorption is assigned as the B2 interchange component (b axis polarized) of the a2u fundamental (674‐cm−1 gas‐phase) exciton band. The resulting, unusually large, static and dynamic exciton interaction terms are tabulated. Recent calculations based on atom—atom interactions are in reasonable agreement with the above results.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/71308/2/JCPSA6-47-9-3227-1.pd

The negro and his political rights.

Typewritten sheets in cover. Thesis (M.A.)--Boston University Bibliography: p. 75-76

Tit for Tat and Beyond: The Legendary Work of Anatol Rapoport

This article pays tribute to Anatol Rapoport. Rapoport’s contributions spanned scientific disciplines and included the application of mathematical models to biology and the social sciences, alongside metatheoretical work bridging semantics, ethics, and philosophy. Known for formulating the “Tit for Tat” strategy, his approach to game theory reflected a nuanced understanding of knowledge, wisdom, and ethics; the differences, for example, between modeling behavior—what works as an algorithm in a structured game—and solving complex human social interactions. While developing a science of human conflict, Rapoport focused on simple ideas to promote cooperation; his ultimate goal was to foster world peace. A career overview alongside testimonials by scholars and family provide a glimpse of Anatol Rapoport, the scientist and the person. The legacy and thinking of Anatol Rapoport continue to resonate and reverberate today whenever we conduct rigorous scholarship toward transforming conflict into peaceful harmony, whether among people or nations.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/153763/1/ncmr12172.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/153763/2/ncmr12172_am.pd

Front localization in a ballistic annihilation model

We study the possibility of localization of the front present in a one-dimensional ballistically-controlled annihilation model in which the two annihilating species are initially spatially separated. We construct two different classes of initial conditions, for which the front remains localized.Comment: Using elsart (Elsevier Latex macro) and epsf. 12 Pages, 2 epsf figures. Submitted to Physica