The very existence and purpose of street gangs is predicated on having an external threat or enemy. It is also recognized that gangs form allies as well as rivals with other gangs. The fact that gangs are embedded in an intricate structure of both positive (ally) and negative (rivalry) relationships has rarely been explored in terms of understanding the levels and the patterns of gang violence....

This research investigates the relationship between working conditions and musculoskeletal / ergonomic disorders in a manufacturing facility. I believe that the biomechanical and psychosocial aspects of work have a significant influence on the individual worker’s health and well-being. The work organization at which I have evaluated the employee’s health and wellbeing and collected a large amou...

1UR 546 Biostatistique et Processus Spatiaux, INRA, 84000, Avignon, France 2Department of Atmospheric and Oceanic Sciences and Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1565, USA 3Université Aix-Marseille, LATP, 13397 Marseille, France 4Geosciences Department and Laboratoire de Météorologie Dynamique (CNRS and IPSL), Ecole Normale Supérieure,...

Many observers have recently noted that the international system is evolving into a multipolar world. At the same time, the notion of balance of power is being severely criticized for its vagueness and inconsistency. Seven empirically testable propositions which exemplify refined and narrowed notions of balance of power are reviewed and analyzed in this paper. These propositions, authored by A....

An acquaintance network is a social structure made up of a set of actors and the ties between them. These ties change dynamically as a consequence of incessant interactions between the actors. In this paper we introduce a social network model called the Interaction-Based (IB) model that involves well-known sociological principles. The connections between the actors and the strength of the conne...

A persistent problem of psychology has been how to deal conceptually with patterns of interdependent properties. This problem has been central, of course, in the theoretical treatment by Gestalt psychologists of phenomenal or neural configurations or fields (12, 13, 15). It has also been of concern to social psychologists and sociologists who attempt to employ concepts referring to social syste...

In this paper we are presenting the theory of balance equations of the Continuum Thermodynamics (balance systems) in a geometrical form using Poincare-Cartan formalism of the Multisymplectic Field Theory. A constitutive relation C of a balance system BC is realized as a mapping between a (partial) 1-jet bundle of the configurational bundle π : Y → X and the extended dual bundle similar to the L...