English summary: The key issues addressed in this book are those that focus on the idea of idea. The texts investigate how the same term can refer to diverse and even antithetical concepts, and also aim to elucidate this enigma and shed light on the problem of ideality in the extraordinary continuity of its philosophical treatment. The contributions have been compiled in order to provide the reader with a fine and well-documented itinerary of the philosophical idea. French text. French description: (...) En vertu de quoi les donnees sensorielles revetent-elles des formes stables et se pretent-elles a des significations partageables qui font que chaque chose est ce qu'elle est en depit de la diversite de ses apparences? Comment l'objectivite de ce sens et de cet etre se concilie-t-elle avec la subjectivite de ces apparences? Et comment se fait-il que, au-dela de la multiplicite des points de vue sur le monde, la Raison puisse faire valoir des pretentions universelles auxquelles elle donne les noms de vrai, de bien ou de beau? Ces grandes questions sont celles que cristallise l'idee d'idee. De cette histoire, certains jalons semblent particulierement bien connus: le statut objectif des Idees chez Platon et leur nette opposition avec les apparences sensibles; le statut subjectif des idees dans la philosophie moderne, o- elles tendent au contraire a coincider avec les apparences et a s'opposer aux eventuelles choses en soi; la fonction rationalisante des Idees chez Kant, qui prend acte de l'irrealite des idees mais ne renonce pas a rendre compte de leur nature regulatrice. La question reste cependant de savoir comment un meme terme a pu recouvrir des conceptions aussi diverses et, en apparence, meme antithetiques. C'est a elucider cette enigme et a eclairer par la meme le probleme de l'idealite dans l'extraordinaire continuite de son traitement philosophique que se sont collectivement livres des specialistes de ces differentes periodes de l'histoire de la philosophie. Fortement chevillees aux textes memes des auteurs concernes, leurs investigations ici rassemblees constituent un dossier qui devrait fournir au lecteur une vision fine et bien documentee de l'itineraire philosophique de l'idee. (shrink)

In the early 1930s W. O. Kermack and W. H. McCrea published three papers in which they attempted to prove a result of E. T. Whittaker on the solution of differential equations. In modern parlance, their key idea consisted in using quantized contact transformations over an algebra of differential operators. Although their papers do not seem to have had any impact, either then or at any later time, the same ideas were independently developed in the 1960–1980s in the framework of (...) the theory of modules over rings of microdifferential operators. In this paper we describe the results of Kermack and McCrea and discuss possible reasons why such promising papers had no impact on the mathematics of the twentieth century. (shrink)

Lobeck’s Aglaophamus (1829) has been read as beginning modern research on Orphism and the ‘ancient theology’. Replacing it in its historical context opens up new perspectives.

This target article draws together two groups of experimental studies on the control of human movement through peripheral feedback and centrally generated signals of motor commands. First, during natural movement, feedback from muscle, joint, and cutaneous afferents changes; in human subjects these changes have reflex and kinesthetic consequences. Recent psychophysical and microneurographic evidence suggests that joint and even cutaneous afferents may have a proprioceptive role. Second, the role of centrally generated motor commands in the control of normal movements and movements (...) following acute and chronic deafferentation is reviewed. There is increasing evidence that subjects can perceive their motor commands under various conditions, but that this is inadequate for normal movement; deficits in motor performance arise when the reliance on proprioceptive feedback is abolished either experimentally or because of pathology. During natural movement, the CNS appears to have access to functionally useful input from a range of peripheral receptors as well as from internally generated command signals. The unanswered questions that remain suggest a number of avenues for further research. (shrink)

Rights have two properties which prima facie appear to be inconsistent. The first is that they are conditional in the sense that one some occasions it is always justifiable for someone to act in a way which appears to be inconsistent with someone else's rights, such as when the defence of necessity applies. The second is that rights are indefeasible in the sense that they are not subject to being defeated our outweighed by utilitarian or policy considerations. If we view (...) rules and the rights which they establish as being subject to a ceteris paribus clause, the form of which generates out the exceptions, the conditionality of rights becomes reconcilable with their nondefeasibility. Such a view of rules and rights would entail that the goals of the law and their orderings be considered as a part of the law. When so viewed, propositions about goals and their orderings become legitimate premises for legal reasoning, furnishing solutions to hard cases in the law of torts, without resort to balancing of interests or judicial discretion. (shrink)

The evolution of internation relationships is studied by means of a mathematical model based on a popular rule of triadic interaction: the friend of my friend is my friend, the friend of my enemy is my enemy, the enemy of my enemy is my friend, the enemy of my friend is my enemy. The rule is shown to lead to the formation and preservation of unipolar and bipolar configurations of nations, with the strengths of relationships, both friendly and conflictual, intensifying (...) through time. These results confirm speculations originally made in static, graph theoretic studies of the balancing of relationships within individuals, small groups and systems of nations. (shrink)