A Memoir of Mary Capper, Late of Birmingham, a Minister of the Society of Friends.

UANL

The history of modern Europe: with a view of the progress of society from the rise of the modern kingdom to the peace of Paris, in 1763

UANL

Cooperative VS. Non-cooperative Truels: Little Agreement, but Does that Matter?

It is well-known that non-cooperative and cooperative game theory may yield different solutions to games. These differences are particularly dramatic in the case of truels, or three-person duels, in which the players may fire sequentially or simultaneously, and the games may be one-round or n-round. Thus, it is never a Nash equilibrium for all players to hold their fire in any of these games, whereas in simultaneous one-round and n-round truels such cooperation, wherein everybody survives, is in both the a -core and ß -core. On the other hand, both cores may be empty, indicating a lack of stability, when the unique Nash equilibrium is one survivor. Conditions under which each approach seems most applicable are discussed. Although it might be desirable to subsume the two approaches within a unified framework, such unification seems unlikely since the two approaches are grounded in fundamentally different notions of stability.

Efficiency in Uncertain Cooperative Games

A contingent contract in a transferable utility game under uncertainty specifies an outcome for each possible state. It is assumed that coalitions evaluate these contracts by considering the minimal possible excesses. A main question of the paper concerns the existence and characterization of efficient contracts. It is shown that they exist if and only if the set of possible coalitions contains a balanced subset. Moreover, a characterization of values that result in efficient contracts in the case of minimally balanced collections is provided.

Analyse comparative des decisions d'emploi en incertitude de la cooperative de travailleurs et de la firme capitaliste traditionnelle a proprietaire unique.

Rapport de recherche

Cooperative of Noncooperative Behavior?

In an abstract two-agent model, we show that every deterministic joint choice function compatible with the hypothesis that agents act noncooperatively is also compatible with the hypothesis that they act cooperatively. the converse is false.

Le care entre dépendance et domination: l'intérêt de la théorie néorépublicaine pour penser une "caring society".

L’éthique du care est confrontée à un problème qui a des allures de paradoxe: bien que sa politisation paraisse nécessaire, l’éthique du care ne semble pas pouvoir trouver en elle-même les ressources suffisantes à la formulation d’une théorie politique compréhensive. Il ne semble pas exister de théorie politique du care à part entière. Cet article examine la fécondité d’un rapprochement entre éthique du care et théorie néorépublicaine de la non-domination. Le résultat, non négligeable, serait de garantir des formes importantes de protections aux activités de care, mais il cela n’empêcherait pas nécessairement les représentations négatives de ces activités, dont on peut supposer qu’elle est l’un des facteurs de la marginalisation et de la répartition inégale qui les affecte. Pour bloquer ces représentations dégradantes, il faudrait que le care soit discuté et défini dans l’espace public non seulement comme un lieu possible de la domination, mais comme un aspect fondamental et positif de la vie individuelle et collective.

(Re)Vitalizing Philanthropy: The Emergence of Indigenous Philanthropy and its Implications for Civil Society throughout the Developing World

As developing countries have become more integrated within the global economy, new, developing world-based economic elites have emerged as important philanthropists and development actors. The burgeoning trend of indigenous philanthropy holds particularly important implications for traditionally resource scarce civil society throughout the developing world. Unlike their Western – and particularly US based – counterparts, these foundations emerged from the context in which they focus their projects. This paper explores whether and how the rise of an indigenous philanthropic sector holds promise for the expansion and consolidation of civil society in the developing world in light of the various limited capacities in which this sector operates.

Production externalities : cooperative and non-cooperative approaches

Thèse numérisée par la Division de la gestion de documents et des archives de l'Université de Montréal

New media technologies, law, and society: an ecological approach

Joyce Tam de l'Université McGill est récipiendaire du 3ème prix du concours de la bourse d'initiation à la recherche offerte par le Regroupement Droit et changements aux étudiants du baccalauréat en droit.

Screening for adolescent idiopathic scoliosis: an information statement by the scoliosis research society international task force

Background: Routine screening of scoliosis is a controversial subject and screening efforts vary greatly around the world. METHODS: Consensus was sought among an international group of experts (seven spine surgeons and one clinical epidemiologist) using a modified Delphi approach. The consensus achieved was based on careful analysis of a recent critical review of the literature on scoliosis screening, performed using a conceptual framework of analysis focusing on five main dimensions: technical, clinical, program, cost and treatment effectiveness. FINDINGS: A consensus was obtained in all five dimensions of analysis, resulting in 10 statements and recommendations. In summary, there is scientific evidence to support the value of scoliosis screening with respect to technical efficacy, clinical, program and treatment effectiveness, but there insufficient evidence to make a statement with respect to cost effectiveness. Scoliosis screening should be aimed at identifying suspected cases of scoliosis that will be referred for diagnostic evaluation and confirmed, or ruled out, with a clinically significant scoliosis. The scoliometer is currently the best tool available for scoliosis screening and there is moderate evidence to recommend referral with values between 5 degrees and 7 degrees. There is moderate evidence that scoliosis screening allows for detection and referral of patients at an earlier stage of the clinical course, and there is low evidence suggesting that scoliosis patients detected by screening are less likely to need surgery than those who did not have screening. There is strong evidence to support treatment by bracing. INTERPRETATION: This information statement by an expert panel supports scoliosis screening in 4 of the 5 domains studied, using a framework of analysis which includes all of the World Health Organisation criteria for a valid screening procedure.

Ab Initio study of magnetic interactions in the KCuF3 and K2CuF4 low-dimensional Systems

The ab initio cluster model approach has been used to study the electronic structure and magnetic coupling of KCuF3 and K2CuF4 in their various ordered polytype crystal forms. Due to a cooperative Jahn-Teller distortion these systems exhibit strong anisotropies. In particular, the magnetic properties strongly differ from those of isomorphic compounds. Hence, KCuF3 is a quasi-one-dimensional (1D) nearest neighbor Heisenberg antiferromagnet whereas K2CuF4 is the only ferromagnet among the K2MF4 series of compounds (M=Mn, Fe, Co, Ni, and Cu) behaving all as quasi-2D nearest neighbor Heisenberg systems. Different ab initio techniques are used to explore the magnetic coupling in these systems. All methods, including unrestricted Hartree-Fock, are able to explain the magnetic ordering. However, quantitative agreement with experiment is reached only when using a state-of-the-art configuration interaction approach. Finally, an analysis of the dependence of the magnetic coupling constant with respect to distortion parameters is presented.

Cooperative caching techniques for mobile ad hoc networks

Data caching can remarkably improve the efficiency of information access in a wireless ad hoc network by reducing the access latency and bandwidth usage. The cache placement problem minimizes total data access cost in ad hoc networks with multiple data items. The ad hoc networks are multi hop networks without a central base station and are resource constrained in terms of channel bandwidth and battery power. By data caching the communication cost can be reduced in terms of bandwidth as well as battery energy. As the network node has limited memory the problem of cache placement is a vital issue. This paper attempts to study the existing cooperative caching techniques and their suitability in mobile ad hoc networks.