3,071 research outputs found
Construcción de condiciones de frontera artificiales locales para la solución numérica del problema de transporte de masa en un medio complejo en tiempo real
No full textEl objetivo de esta investigación es el desarrollo de un método numérico que permite ahorrar los recursos de la máquina al solucionar el problema de transporte de masa en medios complejos infinitos. El enfoque presentado en el trabajo se basa en la construcción de condiciones de frontera artificiales (CFAs) locales en el marco de la técnica de escisión (o bien, separación; inglés: splitting) por procesos físicos.
Para construir las CFAs se supone que la región de interés contiene varias heterogeneidades y fuentes, mientras que en el dominio exterior la ecuación admite la solución analítica. El uso de las técnicas de descomposición de dominio y escisión por coordenadas conduce a las CFAs de una alta precisión, que se utilizan para solucionar el problema de advección-difusión-reacción en un dominio convexo con una frontera artificial suave a trozos.
Se prueba que los problemas de frontera correspondientes están bien planteados, se demuestra que se tiene la convergencia de la solución numérica a la exacta, se presentan estimaciones de errores de las soluciones. Los resultados numéricos confirman el estudio teórico
Contrasting activity profile of two distributed cortical networks as a function of attentional demands
No full textThe original publication is available at http://www.jneurosci.orgThis work was supported by R01 grant MH-073610 from the National Institutes of Health to Denis Paré
Cooperative ITS Security Standards: Implementation, assessment and next challenges
No full textInternational audienceIn the near future connected will interact with each other, the road environment and the Cloud or edge servers, through Cooperative Intelligent Transportation System (C-ITS). C-ITS will significantly improve road safety, traffic efficiency and the driving comfort. Security and privacy protection are key elements forC-ITSsafety-related services. Authenticity and integrity of the communications are ensured using digital signatures and a Public Key Infrastructure (PKI) that delivers pseudonymous certificates to vehicles, Road Side Units (RSU)andCentral ITS-Stations (CS).In this paper, we present recent ETSI standardization progress, the PKI design and the overall C-ITS TrustSystemfor Day1deployment in Europeand we discuss open challenges for future new services and support of autonomous driving.An overview is given on interoperability testing of base standards and on pilot experimentations/ deployments in Europedealingwith trust and privacy management
Cooperative ITS Security Standards: Implementation, assessment and next challenges
No full textInternational audienceIn the near future connected will interact with each other, the road environment and the Cloud or edge servers, through Cooperative Intelligent Transportation System (C-ITS). C-ITS will significantly improve road safety, traffic efficiency and the driving comfort. Security and privacy protection are key elements forC-ITSsafety-related services. Authenticity and integrity of the communications are ensured using digital signatures and a Public Key Infrastructure (PKI) that delivers pseudonymous certificates to vehicles, Road Side Units (RSU)andCentral ITS-Stations (CS).In this paper, we present recent ETSI standardization progress, the PKI design and the overall C-ITS TrustSystemfor Day1deployment in Europeand we discuss open challenges for future new services and support of autonomous driving.An overview is given on interoperability testing of base standards and on pilot experimentations/ deployments in Europedealingwith trust and privacy management
Personal Determinants of Mental Reliability of College Students in Learning Activities
No full textThe paper deals with methodological, theoretical and practical foundations of the problem of mental reliability of a person performing an activity. The problem of personal determinants of reliability is considered. It is concluded that in Russian psychology “reliability” is an interdisciplinary and general scientific concept. The author points out that the study and analysis of this characteristic of the personality of college students makes it possible to arrange and manage professional development
Is Tolerance Political? An Interview with Denis Lacorne
No full textcontribution à un site webDenis Lacorne is the author of "The Limits of Tolerance. Enlightenment Values and Religious Fanaticism" (Columbia University Press, 2019), the English translation of "Les limites de la tolérance" (Gallimard, awarded the Prix Montyon by the Académie Française). In his book, which is intellectually very inspiring because of the many questions it addresses and raises, Denis Lacorne traces the emergence of the notion of tolerance from its early thinkers to the Age of Enlightenment and finally questions the notion and its various understandings through more recent events in France and the United States. What is tolerance? Is tolerance political? Interview by Miriam Périer, CER
Timing of impulses from the central amygdala and bed nucleus of the stria terminalis to the brainstem
No full textThe amygdala and bed nucleus of the stria terminalis (BNST) are thought to subserve distinct functions with the former mediating rapid fear responses to discrete sensory cues and the latter longer “anxiety-like” states in response to diffuse environmental contingencies. Yet, these structures are reciprocally connected and their projection sites overlap extensively. To shed light on the significance of BNST-amygdala connections, we compared the antidromic response latencies of BNST and central amygdala (CE) neurons to brainstem stimulation. Whereas the frequency distribution of latencies was unimodal in BNST neurons (~10 ms mode), that of CE neurons was bimodal (~10 and ~30 ms modes). However, after stria terminalis (ST) lesions, only short-latency antidromic responses were observed, suggesting that CE axons with long conduction times course through the ST. Compared to the direct route, the ST greatly lengthens the path of CE axons to the brainstem, an apparently disadvantageous arrangement. Since BNST and CE share major excitatory basolateral amygdala (BL) inputs, lengthening the path of CE axons might allow synchronization of BNST and CE impulses to brainstem when activated by BL. To test this, we applied electrical BL stimuli and compared orthodromic response latencies in CE and BNST neurons. The latency difference between CE and BNST neurons to BL stimuli approximated that seen between the antidromic responses of BNST cells and CE neurons with long-conduction times. These results point to a hitherto unsuspected level of temporal coordination between the inputs and outputs of CE and BNST neurons, supporting the idea of shared functions.The original publication is available at: http://jn.physiology.org/cgi/content/full/100/6/342
Rehab Depot de la Plaine Saint-Denis
No full textRedesign for workshop Atelier Revision Intermediaire at the Depot de la Plaine Saint-Denis with a rehabilitation center as new functionRMITArchitecture and The Built Environmen
Severini e Denis
No full textL'A. prende in esame i controversi rapporti tra i due artisti, nel primo decennio del secolo e, più tardi, nella produzione di carattere religioso. Severini risulta influenzato da Denis più di quanto sostenga negli scritti teorici. The Author examines the controversial relationships between the two artists, in the first decade of the century and later on, in their religious production. Severini appears influenced by Denis more than he declares in his theoretic writings
The bed nucleus of the stria terminalis mediates inter-individual variations in anxiety and fear
No full textWhile learning to fear stimuli that predict danger promotes survival, the inability to inhibit fear to inappropriate cues leads to a pernicious cycle of avoidance behaviors. Previous studies have revealed large inter-individual variations in fear responding with clinically anxious humans exhibiting a tendency to generalize learned fear to safe stimuli or situations. To shed light on the origin of these inter-individual variations, we subjected rats to a differential auditory fear conditioning paradigm where one conditioned auditory stimulus (CS+) was paired to footshocks whereas a second (CS-) was not. We compared the behavior of rats that received pre-training excitotoxic lesions of the bed nucleus of the stria terminalis (BNST) to that of sham rats. Sham rats exhibit a continuum of anxious/fearful behaviors. At one end of the continuum were rats that displayed a poor ability to discriminate between the CS+ and CS-, high contextual freezing, and an anxiety-like trait in the elevated plus maze (EPM). At the other end were rats that display less fear generalization to the CS-, lower freezing to context, and a non-anxious trait on the EPM. Although BNST-lesioned rats acquired similarly high levels of conditioned fear to the CS+, they froze less than sham rats to the CS-. In fact, BNST-lesioned rats behaved like sham rats with high discriminative abilities in that they exhibited low contextual fear and a nonanxious phenotype in the EPM. Overall, this suggests that inter-individual variations in fear generalization and anxiety phenotype are determined by BNST influences on the amygdala and/or its targets.Published in Journal of Neuroscience. Copyright Society for Neuroscience.Available from the Journal of Neuroscience: http://www.jneurosci.org
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