1,912 research outputs found
Il y a cent ans naissait René Fabre (1889-1966)
No full textVor hundert Jahren wurde René Fabre (1889-1966) geboren.
Der Verfasser beschreibt das Leben, die Karriere, das Werk und die Persönlichkeit dieses Meisters der Toxikologie der ebenfalls ein hervorragender Spitalapotheker und Dekan der Pariser Faculté de Pharmacie war.A hundred years since the birth of René Fabre (1889-1966).
The author retraces the life, the career, the work and the personality of this master of toxicology, who was also an eminent hospital pharmacist and a remarkable dean of the Faculty of Pharmacy of Paris.Truhaut René. Il y a cent ans naissait René Fabre (1889-1966). In: Revue d'histoire de la pharmacie, 78ᵉ année, n°285, 1990. pp. 257-268
René Géronimo Favaloro : pioneer of Cardiac Surgery
No full textDr. René G. Favaloro moved to the Cleveland Clinic in 1962 and proceeded to reshape the face of cardiac surgery as we knew it. Together with his colleagues at the Cleveland Clinic, Drs. Effler, Sones, Proudfit, Groves, Sheldon and countless others, he contributed to the double internal mammary arterymyocardial implantation by the Vineberg method, and by May 1967, he reconstructed the right coronary artery by the saphenous vein graft interposition. These landmark procedures paved the way for the aorto-coronary saphenous vein bypass graft in October 1967. Many similar breakthroughs ensued, with the application of the bypass technique to the left coronary artery, the combination of coronary artery bypass graft with left ventricular reconstruction and valve repair/replacement and finally, by December, a double bypass to the right coronary artery and anterior descending branch of the left coronary artery. In June, 1971, Dr. Favaloro decided to leave the Cleveland Clinic and return to Argentina where he created a medical centre, a teaching unit, a research department and finally an Institute of Cardiology and Cardiovascular Surgery. This was his greatest personal ambition. Over and above his brilliant mind and craft, Dr. Favaloro was a man of integrity, courage, honesty and humility, whose name will never cease to reverberate throughout the history of medicine.peer-reviewe
Plato as Author. The Rhetoric of Philosophy. Edited by Ann N. Michelini
No full textLefebvre René. Plato as Author. The Rhetoric of Philosophy. Edited by Ann N. Michelini. In: Revue Philosophique de Louvain. Quatrième série, tome 105, n°1-2, 2007. pp. 176-178
René Girard's 'Mimetic Theory' and His Contribution to Understanding Migration
No full textEn este artículo el autor indaga acerca del alcance de la “teoría mimética” de René Girard para comprender la migración. Con este propósito, hace una breve descripción de la “teoría mimética” y una caracterización de la migración. Posteriormente, plantea la necesidad de nuevas perspectivas investigativas sobre la migración, que vayan más allá del abordaje positivista de las ciencias humanas que deja de lado el aporte de una comprensión filosófica. En este sentido, la filosofía girardeana resulta pertinente para la comprensión de cierto tipo de migración: inmigración irregular, desplazamiento forzado y refugio. Finalmente, propone una praxis que evite, o al menos minimice, el proceso mimético persecutorio relacionado con la migración.In this article the author explores the extent of René Girard's “mimetic theory” to understand migration phenomenon. To this end, a brief description of the “mimetic theory” and a characterization of the migration are presented. Subsequently, it raises the need to explore new perspectives on migration beyond the positivist approach in the human sciences which leaves the contribution of a philosophical understanding out. In this sense, girardian philosophy is pertinent to understand several types of migration: irregular immigration, forced displacement and refuge. Finally, the author proposes a praxis to avoid, or at least minimizes, the persecutory mimetic process related to migration
A Practical Hardware-Assisted Approach to Customize Trusted Boot for Mobile Devices
No full textCurrent efforts to increase the security of the boot sequence for mobile devices fall into two main categories: (i) secure boot: where each stage in the boot sequence is evaluated, aborting the boot process if a non expected component attempts to be loaded; and (ii) trusted boot: where a log is maintained with the components that have been loaded in the boot process for later audit. The first approach is often criticized for locking down devices, thus reducing users’ freedom to choose software. The second lacks the mechanisms to enforce any form of run-time verification. In this paper, we present the architecture for a two-phase boot verification that addresses these shortcomings. In the first phase, at boot-time the integrity of the bootloader and OS images are verified and logged; in the second phase, at run-time applications can check the boot traces and verify that the running software satisfies their security requirements. This is a first step towards supporting usage control primitives for running applications. Our approach relies on off-the-shelf secure hardware that is available in a multitude of mobile devices: ARM TrustZone as a Trusted Execution Environment, and Secure Element as a tamper-resistant unit.Current efforts to increase the security of the boot sequence for mobile devices fall into two main categories: (i) secure boot: where each stage in the boot sequence is evaluated, aborting the boot process if a non expected component attempts to be loaded; and (ii) trusted boot: where a log is maintained with the components that have been loaded in the boot process for later audit. The first approach is often criticized for locking down devices, thus reducing users’ freedom to choose software. The second lacks the mechanisms to enforce any form of run-time verification. In this paper, we present the architecture for a two-phase boot verification that addresses these shortcomings. In the first phase, at boot-time the integrity of the bootloader and OS images are verified and logged; in the second phase, at run-time applications can check the boot traces and verify that the running software satisfies their security requirements. This is a first step towards supporting usage control primitives for running applications. Our approach relies on off-the-shelf secure hardware that is available in a multitude of mobile devices: ARM TrustZone as a Trusted Execution Environment, and Secure Element as a tamper-resistant unit
Formally Verifying the Correctness and Safety of OpenTitan Boot Code using CBMC
No full textThe correctness and safety of heavily relied upon software is crucial. OpenTitan is an open-source silicon root-of-trust project. Based on an extensive analysis of the OpenTitan project, we, together with SV106f21, developed C code that corresponds to the initial boot stage of OpenTitan. CBMC is a bounded model checker for ANSI-C verification. We verify numerous safety properties for the developed boot code using CBMC. In addition, we propose an overview of the CBMC architecture and theory as well as a structured approach to verify C code using CBMC. We use CBMC nondeterminism to create a C model of the boot code's hardware environment. In total, we verified that the developed boot code adheres to all 11 security properties, with most of them being derived from security goals from our previous work. We also further investigate the safety of the boot code by modeling various hardware attacks and verify for their implication. We discover that the current implementation is vulnerable to attacks on flash, ROM, and the OpenTitan Big Number Accelerator, with the consequence of either executing malicious code or crashing
The journal of a transatlantic art dealer: René Gimpel, 1918-1939
No full textThe journal of the transatlantic art dealer, René Gimpel (1881-1945), is evaluated for its legacy.
The transatlantic art dealer, René Gimpel (1881-1945), maintained an interwar journal for twenty-one years until, like many Jews in France, he was overtaken by radical political events. In this book, Diana Kostyrko explores why Gimpel's journal should be taken seriously as a sociohistorical document. In contextualising the journal, including its reception since first published in 1963, she intercuts art history with material culture and a sociology of modernity. Firstly setting the art dealer in context, the author examines the dominant themes which thread through the journal ‑ ranging from the escalation in power and status of European dealers catering to but also rivalling wealthy private collectors, to the irresistible pressure of twentieth-century modernity on collecting practices.
For all those who are concerned with the European formulation of taste in the fine and decorative arts in the early twentieth century, the trend for eighteenth-century revivalism in France and North America, the acculturation of American museums, and the rise to stardom of the modern art market on the back of the auction house will find much of value here. Overall the author undertakes to distil what René Gimpel's legacy might be. Finally, she asks: was the Paris art dealer incongruously but ultimately a prophet concerned with the over-materiality of modern society, and a cultural pessimist to boot: or did he merely reflect a range of common perceptions abroad at the time
WebWriter: A System to Author and Remix Explorables – Requirements & First Prototype
No full textActive and personalized learning requires that teachers can remix a wide variety of sources into new learning resources, which in turn may be customized by students. While this is well-supported for paper-oriented resources, multimodal, interactive learning resources for digital use, called explorables, are much more difficult to author and remix. In this paper, we derive a set of requirements for a system to author such explorables from a workshop-based study. We further present a first prototype of such a system, called “WebWriter”
Podstawy antropologii René Girarda
No full textTHE BASIS OF RENÉ GIRARD’S ANTHROPOLOGYThe article presents the fundamental category of René Girard’s anthropology, namely the concept of desire. The author discusses, above all, its imitative nature which is revealed in its two basic types: the external and the internal one. The characteristic is supplemented with the metaphysical dimension which appears at times when the object of the desire is existence itself. The presentations were also widened to include the views of psychologists, for whom Girard’s findings constitute an important inspiration
Ice hockey skate boot mechanics: Direct torque and contact pressure measures
No full textAbstractIce hockey is a sport characterized by high speeds, sharp turns and abrupt stops. Hence, the interaction of the foot and ankle within the skate boot is fundamental for optimal stability and propulsion. The purpose of this study was to quantify concurrently direct torque and foot-to-boot contact pressures throughout the foot and ankle's functional range of motion, with two skate boot models. Testing ten male hockey players in a seated position with hip and knee stabilized at 90°, ankle torques during plantar/dorsi-flexion (PF, DF) and inversion/eversion (INV, EVR) isokinetic movements (60°/s) were measures using a Biodex dynamometer with contact pressures collected with piezo-resistive sensors placed about nine foot-ankle regions. One conventional and one modified skate boot models were examined: the latter encompassing greater tendon guard and tongue flexibility. Results showed the modified skate had substantial increases in ankle range of motion (14.8°, p<0.05), particularly in the PF direction (+12.6°) versus the conventional skate, and a trend towards increased PF torque (64.2 vs. 62.7 Nm) and work per stroke (13.0 vs. 8.9kJ). No significant differences in INV/EVR were noted. Contact pressure distribution was altered significantly BOTH at the sites adjacent to the boot construction modifications AND at remote sites, indicating an altered manner of foot leverage within the boot to create PF/DF torque, particular at PF to DF transition phases. In summary, this novel study is the first to directly ascertain the mechanical interactions of the foot and skate boot, and demonstrated this benchmarking protocol's sensitivity to functionally discriminate between boot design changes
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