The “default system” of the brain has been described as a set of regions which are ‘activated’ during rest and ‘deactivated’ during cognitively effortful tasks. To investigate the reliability of task-related deactivations, we performed a meta-analysis across 12 fMRI studies. Our results replicate previous findings by implicating medial frontal and parietal brain regions as part of the “default system”.However, the cognitive correlates of these deactivations remain unclear. In light of the importance of social cognitive abilities for human beings and their (...) propensity to engage in such activities, we relate our results to findings from neuroimaging studies of social cognition. This demonstrates a remarkable overlap between the brain regions typically involved in social cognitive processes and the “default system”.We, henceforth, suggest that the physiological ‘baseline’ of the brain is intimately linked to a psychological ‘baseline’: human beings have a predisposition for social cognition as the default mode of cognizing which is implemented in the robust pattern of intrinsic brain activity known as the “default system”. (shrink)

I. The function of models in the empirical sciencesII. Structure and purpose: conditions of a structural nature which models should satisfy in order to accomplish their function.III. Generalisation and specialisation of the classical definition of model, in view of the above requirements:the algebraic model conceptthe semantic model conceptthe syntactical model conceptIV. Attempt towards reunification: the concept of model on a pragmatic basis.

Natural right and the historical approach -- Natural right and the distinction between facts and values -- The origin of the idea of natural right -- Classic natural right -- Modern natural right : Hobbes ; Locke -- The crisis of modern natural right : Rousseau ; Burke.

Religion, that globalising influence par excellence, constitutes the most powerful known factor of political, economic, social, and national integration. However, religion can also at times be a factor of disintegration ornon-integration, because of its historic vision. The lesions of millenarianisms prefigure the hopes, problems, failures and the illusions of society.Time has, in itself, an ideological dimension that varies according to the perception that one has of it : positive or negative, turned toward the past of the future, inevitably neutral or (...) progressive. (shrink)

The present article discusses the computational tools (both conceptual and material) used in various attempts to deal with individual cases of FLT, as well as the changing historical contexts in which these tools were developed and used, and affected research. It also explores the changing conceptions about the role of computations within the overall disciplinary picture of number theory, how they influenced research on the theorem, and the kinds of general insights thus achieved. After an overview of Kummer’s contributions and (...) its immediate influence, I present work that favored intensive computations of particular cases of FLT as a legitimate, fruitful, and worth-pursuing number-theoretical endeavor, and that were part of a coherent and active, but essentially low-profile tradition within nineteenth century number theory. This work was related to table making activity that was encouraged by institutions and individuals whose motivations came mainly from applied mathematics, astronomy, and engineering, and seldom from number theory proper. A main section of the article is devoted to the fruitful collaboration between Harry S. Vandiver and Emma and Dick Lehmer. I show how their early work led to the hesitant introduction of electronic computers for research related with FLT. Their joint work became a milestone for computer-assisted activity in number theory at large. (shrink)

I soon discovered that I was quite isolated in my attempts to pursue the sociology of literature. In any case, one searched almost in vain for allies if one wanted to approach a literary text from the perspective of a critical theory of society. To be sure, there were Franz Mehring’s articles which I read with interest and profit; but despite the admirable decency and the uncompromising political radicalism of the author, his writings hardly went beyond the limits of a (...) socialist journalist who wrote in essentially the same style about literature as about political and the economy. George Lukács had not yet published his impressive series of essays on Marxist aesthetics and interpretation of literature. Of course, I was deeply touched and influenced by his fine little book, The Theory of the Novel , which I practically learned by heart. Besides Levin Schücking’s small volume on the sociology of literary taste, the only other major influence I can recall was George Brandes’ monumental work on the literary currents of the nineteenth century.Nonetheless, I had the courage, not to say hubris, to plan an ambitious, socially critical series on French, English, Spanish, and German literature, the beginning of which was to be formed by the above-mentioned studies. My attention was especially focused on the writes and literary schools which the German literary establishment either punished by total silence or raised up into the clouds of idealistic babble or relegated to quasi-folkloric anthropology .In these studies, I limited myself to the narrative forms of literature; for reasons which I hold to be sociologically and artistically valid, I believe that novels and stories represent the most significant aspect of German literature in the nineteenth century. While I in no way feel ashamed of these documents of my youth, I am conscious of their weaknesses. If I were to write them over again, I would certainly be less sure of some of the direct connections I drew between literature and writers on the one hand, and the social infrastructure on the other. In later publications I attempted to analyze with greater circumspection the mediation between substructure and superstructure, between social currents and ideologies; but my views on the social world and the necessity to combine social theory and literary analysis have not changed in any essential way. In the last decades the sociology of literature has become progressively more fashionable. The writings of my contemporaries have often amazed me because some—frequently in unnecessarily complicated and esoteric language—are so concerned with “mediation” that the connections between social being and social consciousness became almost obscured. Leo Lowenthal is professor emeritus of sociology at the University of California, Berkeley. He is also professor emeritus at the University of Frankfurt in West Germany. His collected works have been published in five volumes in German and in a parallel English edition. Lowenthal’s autobiographical writings, edited by Martin jay, will appear in the fall of 1987 under the title An Unmastered Past. Lowenthal’s present studies deal with German postmodernism. Ted. R. Weeks is a graduate student at the University of California, Berkeley, specializing in imperial Russian history. (shrink)