Le sommeil profond, distinct du rêve qu’il accompagne, a bien souvent été occulté par ce dernier au sein des études philosophiques et historiques. La présente recherche, consacrée aux figures d’endormis et aux théories du sommeil à la Renaissance, propose de combler en partie cette lacune en partant de l'hypothèse selon laquelle le sommeil profond, bien qu’il échappe à la conscience, n'en demeure pas moins chargé de sens et de valeurs. L’imaginaire bifurque pour créer, en lieu et place d’une absence de connaissance, une source vive de métaphores. Placé au confluent des traditions chrétiennes et païennes, l’art de la Renaissance offre à l’interprétation une multiplicité de figures endormies. Métaphores visuelles, pétries par la littérature de l’époque, nourries de théories qu’elles transforment en retour. À travers elles, dormir constitue bien souvent l’indice du péché, car « l’oisiveté est mère de tous les vices ». Mais, la métaphore change avec la pose du dormeur, son lieu et son environnement également. Selon les œuvres, le sommeil devient l’emblème de l’enfance ou de la vieillesse (premiers et derniers sommeils), une métaphore d’ignorance et d’oubli (sommeil léthéen), la figure du secret et de la foi (repos contemplatif), du désespoir et de la mélancolie (sommeil de tristesse), de l’amour céleste et du ravissement (vacance de l’âme) ou bien du rapt et de la volupté (érotisme léthargique). L’énigme du sommeil donne forme aux questions insolubles qui ne cessent de nous mettre en éveil : images léthargiques de bonheur, d’amour et de mort qui n’en finissent pas de hanter l’imaginaire contemporain, « métaphores absolues » dont l’histoire ne cesse de s’inventer. / Scores of historical and philosophical studies have been devoted to dreams. However, the notion of deep sleep (as opposed to dreams) seems to have been thoroughly neglected. The present study attempts to fill this gap by analyzing representations of sleepers and theories of sleep in the Renaissance. My working hypothesis is that even though deep sleep appears to be located outside of the realm of consciousness, it amounts nonetheless to a heavily determined notion, both semantically and axiologically. Sleep seems to offer a form of imaginative diversion, as the absence of knowledge gives free rein to fanciful metaphors. At the crossroads of Christian and pagan traditions, Renaissance art offers a cornucopia of representations of sleep. They constitute visual metaphors, deeply influenced by the literature and theoretical writings of the period, on which they had in turn a tremendous impact. Thus, sleep is often equated with sin, as « idle hands are the devil's workshop », but its meaning also depends on the sleeper's attitude, location and context. For instance, sleep can be depicted as an emblem of early childhood or old age (first or last sleep), a metaphor for oblivion (Lethean sleep), a figure of ecstasy and faith (contemplative rest), an image of melancholy (sleep of sadness), of spiritual rapture (vacation of the soul) or sensual ravishment (lethargic eroticism). Whichever the case, sleep always remains an enigma, a Protean concept assuming the shape of virtually unanswerable questions : lethargic images of happiness, love and death that are still haunting the contemporary imagination, « absolute metaphors » constantly reinventing themselves and their history.

Doctorat en philosophie et lettres / info:eu-repo/semantics/nonPublished

Doctorat en philosophie et lettres / info:eu-repo/semantics/nonPublished

Keiji Nishitani, philosophe de l’École de Kyoto, a développé sa philosophie de la religion en étudiant les sermons allemands de Maître Eckhart à la lumière de la notion du « néant absolu » de Kitarô Nishida. Nishitani applique cette dernière à la « Déité » (Gotheit) exposée dans la prédication d’Eckhart, où il découvre l’idée d’un éveil à la subjectivité originaire dans l’âme humaine. Cet éveil ouvre à l’âme une liberté « en Dieu sans Dieu », accessible à la vraie intelligence religieuse, détachée de tout dualisme. Dans cette perspective, comment pouvons-nous intégrer la métaphysique que Maître Eckhart expose dans ses œuvres latines ? Dans le Commentaire de l’Évangile selon Jean, Eckhart déploie sa vision sur Dieu, Être-Un, « Principe sans principe », et il enseigne à « vivre » l’unité entre « être » et « connaître », en laquelle consiste la béatitude. Notre réflexion s’articule autour de l’idée de « vivre la vie ». Nous essayons d’unifier le détachement dans le « néant de la Déité » selon Nishitani et l’« Être illimité » selon le commentaire biblique, de manière à représenter la pensée eckhartienne comme une synergie de la spéculation métaphysique et de la pratique existentielle pour expérimenter le Transcendant dans notre vie immanente. / Keiji Nishitani, philosopher of the Kyoto School, developed his philosophy of religion, studying the German sermons of Meister Eckhart, in the light of the notion of “absolute nothingness” of Kitarô Nishida. He applies that notion to the “Godhead” (Gotheit) outlined in Eckhart’s preaching, where he discovers the idea of awakening to the elemental subjectivity in human soul. This awakening opens up to the soul a liberty “in Godwithout God”, accessible to the religious intelligence detached from all dualism. In this perspective, how can we integrate the metaphysics exposed by Eckhart in his Latin works ? In the Commentary on the Gospel of John, Eckhart explains his vision of God, Being-One, “Principle without principle”, and he teaches to “live” the unity between “being” and “knowing”, of which the beatitude consists. Our study revolves around the thinking on “live the life”. We try to unify the detachment in the “nothingness of the Godhead” according to Nishitani and the “unlimited Being” according to the biblical commentary, so as to show the Eckhartian thought as a synergy between metaphysic speculation and existential practice to experience the Transcendent in our immanent life.

The purpose of this dissertation is to undertake a learner-centered exploration of delivery mode relevance in professional learning. Given the increasing pervasiveness of technology-mediated online delivery in nondegree professional learning at the individual and enterprise levels, this study has a particular focus on learning value ascribed by learners to online and in-person delivery in relation to their professional development. Qualitative and quantitative methods were used in this study to collect and examine data from adult professionals in an effort to determine how value is ascribed to learning. With this aim in mind, this study focused on the following research questions: Are there differences in preferred learning format between men and women? Are there differences in preferred learning format between professionals in varied age groups? Are there differences in preferred learning format between professionals who have engaged in learning online and people who have not? For participants who indicate learning format preferences, how do they define and describe their preferences and on what aspects of the learning experience do they base their preferences? For participants who indicate learning format preferences, how are these participants describing and interpreting meaningful relevance for learning in their day-to-day professional lives? A key driver of this exploration was a scarcity of representative understanding in wider research about the relationship between varied modes of professional learning delivery and professional learning transfer, which has long typified learning value in the adult professional context. By exploring professionals’ learning experiences and delivery mode preferences, this study arrived at several explanatory concepts, to include: learning preference premiums as impactful value-drivers for learners; ubiquitous blend as a comprehensive value-based approach to professional learning design and delivery; and absolute proximity as a deliberate technology-mediated merging of work and learning contexts that supports professionals in achieving full applicability of their learning.

This work represents the initial steps in a wider project that aims to map out the sensitive areas in fuel injectors and combustion chambers. Direct numerical simulation (DNS) using a Low-Mach-number formulation of the Navier–Stokes equations is used to calculate direct-linear and adjoint global modes for axisymmetric low-density jets and lifted jet diffusion flames. The adjoint global modes provide a map of the most sensitive locations to open-loop external forcing and heating. For the jet flows considered here, the most sensitive region is at the inlet of the domain. The sensitivity of the global-mode eigenvalues to force feedback and to heat and drag from a hot-wire is found using a general structural sensitivity framework. Force feedback can occur from a sensor-actuator in the flow or as a mechanism that drives global instability. For the lifted flames, the most sensitive areas lie between the inlet and flame base. In this region the jet is absolutely unstable, but the close proximity of the flame suppresses the global instability seen in the non-reacting case. The lifted flame is therefore particularly sensitive to outside disturbances in the non-reacting zone. The DNS results are compared to a local analysis. The most absolutely unstable region for all the flows considered is at the inlet, with the wavemaker slightly downstream of the inlet. For lifted flames, the region of largest sensitivity to force feedback is near to the location of the wavemaker, but for the non-reacting jet this region is downstream of the wavemaker and outside of the pocket of absolute instability near the inlet. Analysing the sensitivity of reacting and non-reacting variable-density shear flows using the low-Mach-number approximation has up until now not been done. By including reaction, a large forward step has been taken in applying these techniques to real fuel injectors.

This thesis is focused on the financial analysis of United Parcel Service Czech Republic, s. r. o. during the period from 2010 to 2014 and the subsequent comparison of its results with selected comparable companies. The thesis is divided into two parts. In the theoretical part the methods of the financial analysis are defined and the optimal values of each financial indicator are determined. In the second part the company is introduced and the specific values of the described indicators are calculated as well as there is an intercompany comparison realized. The conclusion of this thesis is dedicated to an accurate description of the current situation of the company in the context of both optimal values and values which are usually achieved by comparable companies.

This thesis consists of four parts. In the first part we recall some background theory that will be used throughout the thesis. In the second part, we studied the absolute continuity of the laws of the solutions of some perturbed stochastic differential equaitons(SDEs) and perturbed reflected SDEs using Malliavin calculus. Because the extra terms in the perturbed SDEs involve the maximum of the solution itself, the Malliavin differentiability of the solutions becomes very delicate. In the third part, we studied the absolute continuity of the laws of the solutions of the parabolic stochastic partial differential equations(SPDEs) with two reflecting walls using Malliavin calculus. Our study is based on Yang and Zhang \cite{YZ1}, in which the existence and uniqueness of the solutions of such SPDEs was established. In the fourth part, we gave the existence and uniqueness of the solutions of the elliptic SPDEs with two reflecting walls and general diffusion coefficients.

The study of non-linear input-output maps can be summarized by three concepts: Gain, Positivity and Dissipativity. However, in order to make efficient use of these theorems it is necessary to use loop transformations and weightings, or so called ”multipliers”.The first problem this thesis studies is the feedback interconnection of a Linear Time Invariant system with a memoryless bounded and monotone non-linearity, or so called Absolute Stability problem, for which the test for stability is equivalent to show the existence of a Zames-Falb multiplier. The main advantage of this approach is that Zames–Falb multipliers can be specialized to recover important tools such as Circle criterion and the Popov criterion. Albeit Zames-Falb multipliers are an efficient way of describing non-linearities in frequency domain, the Fourier transform of the multiplier does not preserve the L1 norm. This problem has been addressed by two paradigms: mathematically complex multipliers with exact L1 norm and multipliers with mathematically tractable frequency domain properties but approximate L1 norm. However, this thesis exposes a third factor that leads to conservative results: causality of Zames-Falb multipliers. This thesis exposes the consequences of narrowing the search Zames-Falb multipliers to causal multipliers, and motivated by this argument, introduces an anticausal complementary method for the causal multiplier synthesis in [1].The second subject of this thesis is the feedback interconnection of two bounded systems. The interconnection of two arbitrary systems has been a well understood problem from the point of view of Dissipativity and Passivity. Nonetheless, frequency domain analysis is largely restricted for passive systems by the need of canonically factorizable multipliers, while Dissipativity mostly exploits constant multipliers. This thesis uses IQC to show the stability of the feedback interconnection of two non-linear systems by introducing an equivalent representation of the IQC Theorem, and then studies formally the conditions that the IQC multipliers need. The result of this analysis is then compared with Passivity and Dissipativity by a series of corollaries.

Chronology, Identity, Urbanism and State in the Central and South Central Andes between V and X Centuries AD: Some Final ConclusionsThe article doesn´t have an abstract / El artículo no presenta resumen