212 research outputs found

    Transformations Groups of the Andersson-Perlman Cone

    No full text
    . An Andersson-Perlman cone is a certain subcone\Omega\Gamma K) of the symmetric cone\Omega of a Euclidean Jordan algebra. We exhibit a subgroup of the automorphism group of\Omega which operates transitively on \Omega\Gamma K) and show that \Omega\Gamma K) is a simply-connected submanifold of\Omega . 1. Introduction. Andersson-Perlman cones in the setting of Euclidean Jordan algebras (henceforth abbreviated as AP cones) were introduced by H. Massam and the author in [MN] as a generalization of certain cones defined by the statisticians S. A. Andersson and M. D. Perlman for real symmetric matrices [AP]. All mathematical results in [AP] were generalized in [MN] to the setting of Euclidean Jordan algebras, except the existence of transitive transformation groups which play a predominant role in the development in [AP]. In fact, the paper [MN] stresses a different, perhaps more direct approach to the description of Andersson-Perlman cones by employing Peirce decompositions and Frobeniu..

    Massive Cellular Angiofibroma of the Vulva

    No full text
    Cellular angiofibromas of the vulva are uncommon, and usually small and circumscribed. A massive cellular angiofibroma extending into the pelvis is described.Peer reviewe

    Report on the International Public Management Network Research Conference in Rio de Janeiro, Brazil

    No full text
    The paper reports on the 2004 Conference of the International Public Management Network "Third Generation Reform in Brazil and Other Nations: Achieving Governmental, Social and Economic Realignment" . The author, a rapporteur at that Conference, offers his view about the critical elements presented by the different speakers, and recaps some suggestions aimed at ensuring a higher success of reform of whatever generation

    La théorie de Selig Perlman : une étude critique

    No full text
    L'auteur analyse du point de vue méthodologique et du point de vue substantif la thèse exposée par Selig Perlman dans«  A Theory of the Labor Movement ». Il en examine la consistance intrinsèque, l’utilité et les faiblesses. Il conclut que la théorie de Perlman est fondamentalement une apologie anti-marxiste dirigée principalement contre des propositions de Lénine. Une telle approche apporte une conception incomplète et normative du phénomène syndical. C'est pourquoi la thèse de Perlman demeure au niveau de généralisations dont l’utilité est limitée. En effet, considérant la base de la solidarité, les buts, les méthodes et les comportements syndicaux, elle ne fournit qu'une explication partielle, parfois subjective, des diverses composantes de faction syndicale.In this article, the author provides a systematic and detailed analysis of the theory of Selig Perlman, and submits it to a critical evaluation, both in terms of methodology and substance. The following is a brief outline of Perlman's approach.In his methodology, Perlman relies on three analytical elements: 1) three factors: the Power of subsistence of the capitalist system, the degree of influence of intellectuals upon organized labor, the level of maturity of the working class;2) three characteristics: the strength of the institution of private ownership, the degree of class consciousness among labor, the inadequacy of political tools;3) the psychology of manual labor.The essence of Perlman's theory may be outlined in the following manner. At the basis of labor solidarity is « the consciousness of scarcity of opportunity ». This explains why the role of trade unions is to control job opportunities; « job control » is based on « job interests ». For this purpose economic action, through collective agreements and strikes, appears to be the most effective approach. Political action may play, at best, a supplementary role. This approach is bound to lead to equality in industrial relations and to democratization in the economic structure; this may be attained without going through class warfare and without introducing a socialist or a communist system.A critical analysis of Perlman's theory brings out a number of points of methodological character:a) Essentially, the theory is an anti-Marxist apology of the stability of the capitalist system, mainly directed against the position of Lenin. At the basis of the divergence between Perlman and Lenin is the different evaluation of the role of the « intelligentsia ».b) Despite Perlman's claim to the contrary, he provides only a partial definition of trade unionism. This definition presents a scheme for a specific functional model; only through extension by means of a normative projection it becomes a general model for a true trade unionism.c) The analytical variables are not independent one from another, and because of this their interrelation cannot be significant. The three factors are defined, in part, each one by means of the others. The three characteristics are a descriptive elaboration of the three factors within the American context. Psychological categories are implicit in the definition of the third factor.d) The depreciatory concept of the « intelligentsia » reflects a subjective and biased approach to the problem of leadership in trade unionism. According to Perlman's definition, leaders who rose from the ranks of labor represent the concept of a « stable and responsible » trade unionism; in contrast, intellectuals, that is, « educated non-manualists », who enter the labor world introduce with them radicalism and revolutionary program of action, or advocate political action within trade unionism, in terms of Perlman's definition.With regard to the substance of Perlman's theory, this writer suggests the following points for consideration:a) The psychological approach ( « the consciousness of scarcity of opportunities »), despite some inconsistencies in definition and despite the fact that it may be regarded as typical for a particular group only, provides room for some useful generalizations; yet these generalizations are of limited character and cannot lead to theoretical conclusions. They reflect one element in workers' motivation to join the union and to support its activities. This element, in itself, cannot explain the process of labor organization, nor the occupational and territorial differentiation in the degree of unionization. Moreover, its origin is in the assumption of a state of chronic underemployment — a condition which is least favorable to labor solidarity.b) The concept of « job control » is related exclusively to occupational goals.c) Perlman sees in the joint system of control the most advantageous alternative; in his view, the autonomous system of control has no advantages, and control by external factors has an entirely secondary significance. By emphasizing collective negotiations he grossly underrestimates the importance of various forms of mutual assistance. Also, Perlman was not able, unfortunately, to provide a clear distinction between political activities of non-occupational character (revolutionary and other) and the utilization of political levers as a supplementary tool in realization of occupational and semi-occupational goals.d) The idealistic concept of « parity » in industrial relations cannot be ignored. Its eventual realization will call for a framework different from that provided by Perlman; under modem conditions the solution for existing problems often cannot be found on local level and has to rely on the dynamic intervention of a new interested party — the state
    corecore