241 research outputs found
A revival of the Gothic tale in French twentieth century literature : Claude Seignolle
It is perhaps the very diversity of his gifts and interests that has prevented Claude Seignolle so far from reaching the wide public that his work deserves. The scholars know him and rightly value his unique contributions to folklore; the novelist know well that his novels are a distinct contribution to literature, written as they are with the pure and forceful eye of the poet. Finally, those who are interested in the devil keep their eyes open for every new tale by this strange diabolist ... These little tales of mystery and horror have a quality which is entirely their own.
Seignolle has won a distinct place for himself in literature and his particular temperamental gift of qualities poetry, mystery and irony set him apart from most writers of the day. Il est seul dans son genre
Velocity Dealiased Spectral Estimators of Range Migrating Targets using a Single Low-PRF Wideband Waveform
Wideband radars are promising systems that may provide numerous advantages, like simultaneous detection of slow and fast moving targets, high range-velocity resolution classification, and electronic countermeasures. Unfortunately, classical processing algorithms are challenged by the range-migration phenomenon that occurs then for fast moving targets. We
propose a new approach where the range migration is used rather as an asset to retrieve information about target velocitiesand, subsequently, to obtain a velocity dealiased mode. More specifically three new complex spectral estimators are devised in case of a single low-PRF (pulse repetition frequency) wideband waveform. The new estimation schemes enable one to decrease the
level of sidelobes that arise at ambiguous velocities and, thus, to enhance the discrimination capability of the radar. Synthetic data and experimental data are used to assess the performance of the proposed estimators
The effect of ownership concentration on management behavior in Belgian banks: a case study
Double Degree. A Work Project, presented as part of the requirements for the Award of a Masterâs Degree in Finance from NOVA â School of Business and Economics and a Masters Degree in Management from Louvain School of ManagementThis thesis identifies two completely different ownership structures in Belgian banks: on one side, there is the concentrated ownership structure with a number of reference shareholders, while on the other side, the ownership is really dispersed and no shareholder has a significantly large stake and ability to influence managementâs decisions. Dexia and KBC followed the first model, while Fortis has evolved towards the second one around the year 2000. The mitigating impact that reference shareholders could have had on the â in hindsight â wrong decisions of Belgian banksâ top-managers is found to be very limited. I therefore conclude that the dispersed ownership structure of Fortis was not an important factor in its collapse. Nevertheless, a concentrated ownership structure has been found out to help in case of financial distress, mainly because governments will be more inclined to participate to bailouts when a sound rescue strategy, elaborated with the help of a stable ownership structure, is present.NSBE - UN
RĂ©flexions sur lâespace et le temps dans la phĂ©nomĂ©nologie de Renaud Barbaras (seconde partie)
ParallĂšlement Ă la restitution des linĂ©aments du systĂšme de Renaud Barbaras au fil de ses trois pans successifs (1/ phĂ©nomĂ©nologique, 2/ cosmologique et 3/ mĂ©taphysique), on a tentĂ©, dans la premiĂšre partie de cet article, dâexhiber la primautĂ© ontologique de lâespace sur le temps. En effet, le monde en lui-mĂȘme sâest avĂ©rĂ© ĂȘtre un procĂšs spatialisant auquel aucune temporalitĂ© nâest associĂ©e dans la mesure oĂč il sâagit dâun espace archaĂŻque se faisant, de toute Ă©ternitĂ©, au grĂ© dâun mouvement..
Scanning and Transmission Electron Microscopy, and Electron Probe Analysis of the Interface Between Implants and Host Bone
Bioinert materials (e.g., alumina implants) and bioactive ceramics (e.g., calcium phosphate ceramics, glass -ceramics) are now extensively used in dentistry. However, the physico-chemical interactions at the interfaces between the implant and the host bone are poorly understood. The purpose of this study was to define the interactions at these interfaces using a combination of analytical techniques: light microscopy, scanning and transmission electron microscopy, electron probe microanalysis, X-ray microradiography, X-ray diffraction, and infrared specstroscopy.
Bioinert (pure titanium) and bioactive materials (hydroxyapatite, beta-tricalcium phosphate and biphasic calcium phosphate) were implanted in dogs, and the implants, recovered after various periods of implantation, were analyzed.
The results demonstrated the following: the bioactive materials interact with the biological fluid and the living tissues in a specific manner. This process includes biodissolution/biodegradation, apatite crystal precipitation, and bone formation on the implant surface at the expense of the material. The results are discussed according to the limitations of the analytical techniques used.
The medical and chemical word COALESCENCE is suggested to describe the specific interactions of bioactive materials and INTERACTION for the phenomenon of physical contact of the bioinert materials with the host bone
En-deça du sexe et du genre, sur la piste de lâĂ©quivocitĂ© de lâEros
Depuis plusieurs dĂ©cennies maintenant, les discours biologiques et sociologiques monopolisent, au sein du champ scientifique, la rĂ©flexion sur le fĂ©minin et le masculin. Quâelles entretiennent ou non un rap- port de rivalitĂ©, ces deux types dâapproches scientifiques saturent Ă tel point le paysage intellectuel dĂ©ployĂ© autour de la question de la diffĂ©rence sexuelle, quâil peut sembler difficile de dĂ©gager une voie qui ne sâen tiendrait pas aux notions dominantes de âsexeâ et de âgenreâ. NĂ©an..
Universal electric-field-driven resistive transition in narrow-gap Mott insulators
One of today's most exciting research frontier and challenge in condensed
matter physics is known as Mottronics, whose goal is to incorporate strong
correlation effects into the realm of electronics. In fact, taming the Mott
insulator-to-metal transition (IMT), which is driven by strong electronic
correlation effects, holds the promise of a commutation speed set by a quantum
transition, and with negligible power dissipation. In this context, one
possible route to control the Mott transition is to electrostatically dope the
systems using strong dielectrics, in FET-like devices. Another possibility is
through resistive switching, that is, to induce the insulator-to-metal
transition by strong electric pulsing. This action brings the correlated system
far from equilibrium, rendering the exact treatment of the problem a difficult
challenge. Here, we show that existing theoretical predictions of the
off-equilibrium manybody problem err by orders of magnitudes, when compared to
experiments that we performed on three prototypical narrow gap Mott systems
V2-xCrxO3, NiS2-xSex and GaTa4Se8, and which also demonstrate a striking
universality of this Mott resistive transition (MRT). We then introduce and
numerically study a model based on key theoretically known physical features of
the Mott phenomenon in the Hubbard model. We find that our model predictions
are in very good agreement with the observed universal MRT and with a
non-trivial timedelay electric pulsing experiment, which we also report. Our
study demonstrates that the MRT can be associated to a dynamically directed
avalanche
RĂ©flexions sur lâespace et le temps dans la phĂ©nomĂ©nologie de Renaud Barbaras
Alors que la conception habituelle de lâespace et du temps insiste sur la diffĂ©rence insurmontable de leur nature, sur leur incommensurabilitĂ© malgrĂ© leur coexistence (la rĂ©alitĂ© se donnant simultanĂ©ment dans lâespace et le temps), la conception philosophique Ă laquelle nous voudrions faire droit ici revendique leur articulation. EnvisagĂ©e phĂ©nomĂ©nologiquement, cette question de lâarticulation ne contrevient pas seulement Ă lâidĂ©e courante selon laquelle lâespace nâa rien Ă voir avec le temps..
Static and dynamic bearing failure of carbon/epoxy composite joints
International audienceMechanical fastening is a common method used to join composite materials in aeronautical industry. Various studies have been performed dedicated to the behaviour of composite bolted joints under quasi-static loadings, but only few studies deal with the dynamic behaviour (crash or impacts). The aim of this work is to study the loading rate influence on the bearing response of a carbon/epoxy laminate loaded by a pin. For that purpose, a double shear test fixture has been specially designed to measure the global behaviour and the local response around the pin. Infrared thermography and Digital Image Correlation techniques have been used to detect, map and characterize dissipative phenomena evolution. The tests have been performed on a servo-hydraulic jack with a loading rate ranging from 10 â4 m/s to 1 m/s. An increase of the peak bearing load of more than 20% is observed with the loading rate increase. A decrease of the load plateau of more than 60% is obtained. Simultaneous measurements of thermal and kinematic fields in this work give access to the evolution of the damage-related dissipative phenomena close to the pin. These dissipative phenomena were found to be significantly dependent on the loading rate
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