Par delà les tensions infinies du monde ce gui, à partir de la terre, fleurit sur le ciel pur de la métaphysique sont les bourgeons de l'éthique. En l'occurrence, dans ce livre rare, ceux de la morale bouddhique se déclinent selon l'application des vœux particuliers doublés d'une pratique d'ouverture universelle. Par la connaissance des données, du développement de questions cruciales, grâce également au degré d'engagement individuel sur la voie, la perspective du message de l'Eveillé et ses conséquences inaugurales d'un état (...) d'esprit autre s'éclairent quasi scientifiquement. Se démarquant du simple dogme d'un comportement idéal, ce cheminement positif révèle la fonction utile de l'humaine condition qualifiée par l'expérience de préceptes transformateurs. Une conduite de vie s'amorce sans coup férir. Pacifier le sensible par la force de donner corps à une bonté impersonnelle, à des mœurs positives, participe d'un essentiel actif, apaisant, qui donne levain et sens à notre présence d'être vivant ici. (shrink)

An analysis is briefly presented of the possible causes of the failure of stochastic electrodynamics (SED) when applied to systems with nonlinear forces, on the basis that the main principles of the theory are correct. In light of this analysis, an alternative approach to the theory is discussed, whose postulates allow to establish contact with quantum mechanics in a natural way. The ensuing theory, linear SED, confirms the essential role of the vacuum–particle interaction as the source of quantum phenomena.

Introduction au numéro spécial "L'articulation de la phénoménologie et de l'herméneutique chez Paul Ricœur".

Introduction au numéro spécial "L'articulation de la phénoménologie et de l'herméneutique chez Paul Ricœur".

The present paper reveals (non-relativistic) quantum mechanics as an emergent property of otherwise classical ergodic systems embedded in a stochastic vacuum or zero-point radiation field (zpf). This result provides a theoretical basis for understanding recent numerical experiments in which a statistical analysis of an atomic electron interacting with the zpf furnishes the quantum distribution for the ground state of the H atom. The action of the zpf on matter is essential within the present approach, but it is the ergodic demand (...) what ultimately leads to the matrix formulation of quantum mechanics. The paper thus represents a step forward in the quest for an elucidation of the fundamentals of quantum mechanics. (shrink)

We discuss the main results of Linear Stochastic Electrodynamics, starting from a reformulation of its basic assumptions. This theory shares with Stochastic Electrodynamics the core assumption that quantization comes about from the permanent interaction between matter and the vacuum radiation field, but it departs from it when it comes to considering the effect that this interaction has on the statistical properties of the nearby field. In the transition to the quantum regime, correlations between field modes of well-defined characteristic frequencies arise, (...) which coincide with the transition frequencies of quantum mechanics and are therefore directly related with the energy quantization. The Heisenberg equations of motion of (non-relativistic) quantum electrodynamics are thus obtained. After a detailed consideration of the significance of the approximations made, we present a discussion on some of the most delicate or controversial features of quantum mechanics from the perspective provided by the present theory. (shrink)

We formulate from first principles a theory of stochastic processes in configuration space. The fundamental equations of the theory are an equation of motion which generalizes Newton's second law and an equation which expresses the condition of conservation of matter. Two types of stochastic motion are possible, both described by the same general equations, but leading in one case to classical Brownian motion behavior and in the other to quantum mechanical behavior. The Schrödinger equation, which is derived here with no (...) further assumption, is thus shown to describe a specific stochastic process. It is explicitly shown that only in the quantum mechanical process does the superposition of probability amplitudes give rise to interference phenomena; moreover, the presence of dissipative forces in the Brownian motion equations invalidates the superposition principle. At no point are any special assumptions made concerning the physical nature of the underlying stochastic medium, although some suggestions are discussed in the last section. (shrink)

The origin of the wave properties of matter is discussed from the point of view of stochastic electrodynamics. A nonrelativistic model of a charged particle with an effective structure embedded in the random zeropoint radiation field reveals that the field induces a high-frequency vibration on the particle; internal consistency of the theory fixes the frequency of this jittering at mc2/ħ. The particle is therefore assumed to interact intensely with stationary zeropoint waves of this frequency as seen from its proper frame (...) of reference; such waves, identified here as de Broglie's phase waves, give rise to a modulated wave in the laboratory frame, with de Broglie's wavelength and phase velocity equal to the particle velocity. The time-independent equation that describes this modulated wave is shown to be the stationary Schrödinger equation (or the Klein-Gordon equation in the relativistic version). In a heuristic analysis appled to simple periodic cases, the quantization rules are recovered from the assumption that for a particle in a stationary state there must correspond a stationary modulation.Along an independent and complementary line of reasoning, an equation for the probability amplitude in configuration space for a particle under a general potential V(x) is constructed, and it is shown that under conditions derived from stochastic electrodynamics it reduces to Schrödinger's equation. This equation reflects therefore the dual nature of the quantum particles, by describing simultaneously the corresponding modulated waveand the ensemble of particles. (shrink)

Arguments are given in favor of a stochastic theory of quantum mechanics, clearly distinguishable from Brownian motion theory. A brief exposition of the phenomenological theory of stochastic quantum mechanics is presented, followed by a list of its main results and perspectives. A possible answer to the question about the origin of stochasticity is given in stochastic electrodynamics by assigning a real character to the vacuum radiation field. This theory is shown to reproduce important quantum mechanical results, some of which are (...) presented explicitly to illustrate its potentialities. Finally the main problems and some perspectives of research within stochastic electrodynamics are discussed. (shrink)

The nm23 gene, a putative metastasis suppressor gene, was originally identified by its reduced expression in highly metastatic K‐1735 murine melanoma cell lines, as compared to related, low metastatic melanoma cell lines. Transfection of nm23 cDNA has been reported to suppress malignant progression in Drosophila and mammalian cells. Highly conserved homologues of nm23 have been found in organisms ranging from the prokaryote Myxococcus xanthus to Drosophila, where the gene is involved in normal development and differentiation. The product of the nm23 (...) gene exhibits a nucleoside diphosphate kinase activity, yet the nucleoside diphosphate kinase activity of Nm23 does not correlate with its apparent biological functions. We review recent cellular, genetic, biochemical and X‐ray crystallographic data to formulate and evaluate hypotheses concerning the molecular mechanism of nm23 action. (shrink)

Although it is commonly believed that the concept of brain death was developed to benefit organ transplants, it evolved independently. Transplantation owed its development to advances in surgery and immunosuppressive treatment; BD owed its origin to the development of intensive care. The first autotransplant was achieved in the early 1900s, when studies of increased intracranial pressure causing respiratory arrest with preserved heartbeat were reported. Between 1902 and 1950, the BD concept was supported by the discovery of EEG, Crile’s definition of (...) death, the use of EEG to demonstrate abolition of brain potentials after ischaemia, and Crafoord’s statement that death was due to cessation of blood flow. Transplantation saw the first xenotransplant in humans and the first unsuccessful kidney transplant from a cadaver. In the 1950s, circulatory arrest in coma was identified by angiography, and the death of the nervous system and coma dépassé were described. Murray performed the first successful kidney transplant. In the 1960s, the BD concept and organ transplants were instantly linked when the first kidney transplant using a brain-dead donor was performed; Schwab proposed to use EEG in BD; the Harvard Committee report and the Sydney Declaration appeared; the first successful kidney, lung and pancreas transplants using cadaveric donors were achieved; Barnard performed the first human heart transplant. This historical review demonstrates that the BD concept and organ transplantation arose separately and advanced in parallel, and only began to progress together in the late 1960s. Therefore, the BD concept did not evolve to benefit transplantation. (shrink)

Kohlenbach, U., Effective moduli from ineffective uniqueness proofs. An unwinding of de La Vallée Poussin's proof for Chebycheff approximation, Annals of Pure and Applied Logic 64 27–94.We consider uniqueness theorems in classical analysis having the form u ε U, v1, v2 ε Vu = 0 = G→v 1 = v2), where U, V are complete separable metric spaces, Vu is compact in V and G:U x V → is a constructive function.If is proved by arithmetical means from analytical (...) assumptions x εXy ε Yx z ε Z = 0) only , then we can extract from the proof of → an effective modulus of uniqueness, which depends on u, k but not on v1,v2, i.e., u ε U, v1, v2 ε Vu, k εG, G 2-φuk→dv2-itk). Such a modulus φ can e.g. be used to give a finite algorithm which computes the zero of G on Vu with prescribed precision if it exists classically.The extraction of φ uses a proof-theoretic combination of functional interpretation and pointwise majorization. If the proof of → uses only simple instances of induction, then φ is a simple mathematical operation. (shrink)

The connection between stochastic electrodynamics (SED) and the quantum theory of matter is further explored. The main result is that the Fokker-Planck-like equation of SED can be recast into the form of a Schrödinger equation with radiative corrections, when the system is close to a state of equilibrium. The phase-space distribution can be written as Wigner's pseudo-distribution plus corrections due to the nonlinearity of the external force and to radiative effects. The radiative corrections predicted by the theory, namely the Lamb (...) shift and the decay of excited atomic states, coincide with those predicted by QED. Moreover, the theory offers a clear physical interpretation of these phenomena as due to the coupling of the electric dipole of the system with the zero-point radiation field and to radiation reaction, respectively. (shrink)

By making use of the method of moments we study some aspects of the statistical behavior of the nonrelativistic harmonic oscillator according to stochastic electrodynamics. We show that the random rotations induced on the particle by the zero-point field account for the magnitude of the spin of the electron, the result differing from the correct one(3/4)h 2 by a factor of2. Assuming that the measurement of a spin projection may be effectively taken into account by considering the action of only (...) the subensemble of the field with the corresponding circular polarization, the calculated value of the spin projection comes out to be the correct one within a factor of order unity. The radiative corrections give rise to both the Lamb shift and the anomalous magnetic moment of the electron, the latter being evaluated to within a factor of2. The magnetic and gyromagnetic properties of the electron come out to be in agreement with quantum mechanics. Interference effects are shown to occur when evaluating the average value of the square of the angular momentum. (shrink)

The numerical study of a glycolytic model formed by a system of three delay differential equations reveals a multiplicity of stable coexisting states: birhythmicity, trirhythmicity, hard excitation and quasiperiodic with chaotic regimes. For different initial functions in the phase space one may observe the coexistence of two different quasiperiodic motions, the existence of a stable steady state with a stable torus, and the existence of a strange attractor with different stable regimes (chaos with torus, chaos with bursting motion, and chaos (...) with different periodic regimes). For a single range of the control parameter values our system may exhibit different bifurcation diagrams: in one case a Feigenbaum route to chaos coexists with a finite number of successive periodic bifurcations, in other conditions it is possible to observe the coexistence of two quasiperiodicity routes to chaos. These studies were obtained both at constant input flux and under forcing conditions. (shrink)

Traditionnellement, une théorie de la signification doit rendre compte à la fois des conditions de vérité des phrases des langues naturelles et des relations évidentes qu'entretiennent le langage et la pensée. À ce titre, le paradigme frégéen est un modele du genre. Une phrase y est dite exprimer une pensée, laquelle lui sert de valeur cognitive et a une valeur de vérité. Différentes occurrences d'une même phrase expriment une même pensée. Si cette phrase a une occurrence dans un contexte d'attitude (...) propositionnelle, elle réfère à la pensée qu'elle exprimerait en contexte ordinaire. La théorie de la référence directe a fait voler en éclats cette image aussi simple que claire de la relation entre langage et pensée. C'est sur cet arrière-plan que prend place le livre de François Récanati, Direct Reference. Une bonne partie des efforts de l'auteur est en effet consacrée à rétablir des liens aujourd'hui étiolés. (shrink)

Ce texte s’efforce de définir la contribution possible de la phénoménologie française contemporaine au développement et à la radicalisation du projet d’une herméneutique du soi. Il s’agit, plus spécifiquement, de préciser quelle conception décentrée du soi ressort des récents travaux de Claude Romano sur l’événement et d’Emmanuel Housset sur la dimension relationnelle de la personne. Pour ce faire, l’auteur insiste sur les convergences entre les deux œuvres, tout en s’interrogeant sur les limites de ces approches.

Les quatre thèses suivantes ont pour résultat qu'il devient impossible de justifier sa croyance en l'existence d'états mentaux hors les siens propres : on a un accès direct à ses propres états mentaux ; on n'a qu'un accès indirect aux états mentaux d'autrui ; le matérialisme est indéfendable et toute prétention à la connaissance doit respecter des contraintes empiristes. L'argument par analogie, une tactique classique pour justifier cette croyance, est insoutenable, en particulier lorsqu'il se base sur le comportement linguistique. Un (...) autre argument de Putnam nous engage sur un terrain où, à la limite, il n'est plus nécessaire de parler des états mentaux d'autrui. Il faut donc rethématiser certains problèmes en théorie de la connaissance.The impossibility of justifying our commonsense belief that there are other minds follows from four theses: we have direct access to our own mental states ; we have only an indirect access to other's mental states ; materialism is untenable and our knowledge claims must be made in accordance with empiricist requirements. The well-known argument from analogy cannot be supported, especially when based on the analogy with linguistic behavior. Another argument, used by Putnam, runs on an epistemic ground. But here, the ultimate consequence is that it is useless to talk about other's mental states, a very unwelcomed conclusion. We are thus led to a reexamination of certain areas of the philosophy of knowledge, especially those connected with our knowledge of our own mental states. (shrink)

This paper analyses the way in which discourse and argumentation may vary depending on participants’ educational level and gender. Men and women from three different educational levels (literacy, advanced level and university students) participated in discussion groups that debated about women and work, the sharing of housework and the way in which girls and boys are educated. The results showed important differences depending on participants’ educational level and gender. In general, the main differences were related to educational level, while gender (...) tended to interact with educational level, as a moderating factor. (shrink)

RÉSUMÉ L’identité intentionnelle soulève des énigmes quant au comportement linguistique de certains pronoms anaphoriquement liés à des quantificateurs restreints, mais qui ne peuvent être considérés comme des variables liées par ces quantificateurs. J’examine ce problème et suggère une solution, qui est une généralisation de la notion de pronom de texte, conçue afin d’analyser certains pronoms qui ont un comportement linguistique similaire. ABSTRACT Intentional identity raises problems with respect to the linguistic behavior of anaphoric pronouns linked to restricted quantifiers but that (...) cannot be variables bound by these quantifiers. I examine this issue and suggest a solution based on the notion of a text pronoun, introduced to deal with pronouns exhibiting a similar linguistic behavior. (shrink)

Ce texte vise à explorer la contribution de Paul Ric?ur à une réflexion phénoménologique sur le vivant. Il s?agit notamment, à partir du débat avec Jean-Pierre Changeux, de faire ressortir l?insistance avec laquelle il s?efforce de distinguer l?approche phénoménologique du vécu de l?ap­proche objectivante des sciences du vivant, de façon à soutenir la thèse d?un dualisme sémantique entre les deux ordres de discours. Tout le travail de Ric?ur est alors d?ouvrir le discours philosophique à l?apport des sciences de la vie, (...) sans soumettre le projet phénoménologique à une naturalisation. Con­trairement à Jean-Luc Petit, qui voit dans la phénoménologie eidétique de la volonté du jeune Ric?ur ce qu?il y a de plus prometteur pour aborder la question du vivant, nous soutenons plutôt que la position originale de Ric?ur sur le vivant se laisse comprendre à partir de sa triple allégeance à la phéno­ménologie, à l?herméneutique et à la philosophie réflexive. (shrink)

RÉSUMÉ Le principal objectif de ce texte est d'apporter certaines clarifications par rapport à des problèmes et difficultés entourant l'usage actuel des notions de culture, d'appartenance et de dialogue. L'auteur montre que l'idée selon laquelle on pourrait être prisonnier de sa propre culture découle d'une transformation récente de la signification du concept de culture. Cette idée est critiquée comme étant un mythe, le mythe de la monade culturelle, reposant sur une mécompréhension des rapports entre culture, appartenance et dialogue. L'auteur s'efforce (...) de proposer une meilleure compréhension de ces trois concepts, de façon à éviter toute forme de relativisme radical. ABSTRACT The aim of this paper is to shed light on some difficulties and problems related to the current use of the concepts of culture, belonging and dialogue. The author shows that the idea that we could be prisoners of our own culture stems from a recent transformation of the meaning of the concept of culture. This idea is criticized as a myth, the myth of the cultural monad, based on a misunderstanding of the relationship among culture, belonging and dialogue. The author tries to offer a better understanding of these three concepts, in order to avoid any form of radical relativism. (shrink)