Search results for "SPACE"
showing 10 items of 21658 documents
Espace et pouvoir
2014
National audience
Partial Discharges in HVDC Cables - The Effect of the Temperature Gradient During Load Transients
2021
The paper investigates the role of the space charge accumulation phenomena in the inception of Partial Discharges (PD) in a defect within the bulk of the dielectrics of a High Voltage Direct Current (HVDC) cable. It is widespread accepted that the number of PD occurring in an HVDC cable during its lifetime is largely less than that under AC voltage stress. This is essentially due to higher values of the voltage between the conductor and the screen needed to trigger PD under a steady DC voltage than the same value under AC stress. Nevertheless, due to the dependency of the electrical conductivity of the insulation on the electric field and temperature, PD in HVDC cables is strongly influence…
Development of bidirectional dc-dc converters for hybrid power sources - Final Report
2018
A Bidirectional Isolated Full-Bridge Converter was designed, prototyped and tested. The device is intended to interface a Bank of Supercapacitors with a battery-powered bus, in order to boost the capability of supplying large power peaks. The converter was based on the Isolated Dual Active Bridge configuration. When driven by an external control voltage, it is capable of generating in both directions a train of current pulses, with 2kW peak power, for any battery voltage in the range 24-32V and for any supercapacitor voltage in the range 35-70V. Worst-case battery current was 70A. Pulse duration was 100ms with 50% duty cycle and 1 ms rise time.
L’intériorisation de l’espace: le désert chez Fromentin et Saint-Exupéry
2009
Cette étude se propose de tracer un parcours à travers l’analyse d’un désert mental et littéraire, réel et intériorisé. Il s’agit de comprendre une modalité de perception de l’espace du désert à travers l’expression artistique, notamment l’écriture de deux écrivains tels que E. Fromentin et A. de Saint- Exupéry. Premièrement nous allons aborder la question de la perception du désert en tant que paysage et par conséquent sa cristallisation en images transformant la réalité géographique des lieux. Le désert sera donc analysé en relation à la culture occidentale en tant que son même contrepoint ou bien en tant que terme de référence pour la définition de l’identité collective. Ensuite on abord…
Articulating the Practice Architectures of Collaborative Research Practice
2016
This chapter explores a collaborative practice of comparative data analysis through the researching activities of four researchers from Australia and Finland. We interrogate the ontological and empirical reality we experienced while engaged in a practice of analysing narrative data on mentoring. In this chapter, we are not reporting on the outcomes of our analysis of mentoring practice; instead we focus on our collaborative engagement, articulating the practice architectures of our research practice. This collaborative research practice was pre-figured by: (1) philosophical traditions instituted through a theory of practice architectures; and (2) normalised practices of researching mentorin…
The Posterior Parietal Cortex and the spatial representation of time
2010
Microbiome and Probiotics in Acne Vulgaris—A Narrative Review
2022
Acne vulgaris is a chronic disease characterised by the appearance of eruptions such as whiteheads, blackheads, pustules, papules, and cysts. Among factors that cause acne vulgaris are the abnormal keratinisation of the sebaceous canal, bacterial colonisation (Cutibacterium acnes), increased sebum production, genotypic factors, and hormonal disorders. Treatment is often long and tedious, and can lead to a reduction in quality of life and social isolation. The intestinal microbiota is greatly important in the formation of acne lesions. It is also responsible for the proper immunity of the organism. Acne is a disease that can be related to the condition of the digestive tract and its microbio…
Detecting Kernel Vulnerabilities During the Development Phase
2015
Testing is one of the major problems in Linux kernel development cycle. Security analysis and ensuring no new vulnerabilities has been introduced is one of the toughest issues of testing. Kernel developers attempt to find as many security issues as possible before merging with the mainline branch. Failure to detect vulnerabilities will result in vulnerable kernel shipped by distribution and vulnerable systems. The kernel developers can choose between several industrial and open source tools to assist in the development process and shorten the development cycle. (Though not as many as user space developers. Kernel tools are limited and rare compared to user space tools) Some of these tools a…
La Investigación Acción Participativa (IAP) en el sector empresarial. Interviniendo desde lo local
2019
El artículo muestra el potencial de aplicación de las metodologías participativas de investigación y planeación social para una gestión participativa del conocimiento y el desarrollo de estrategias de intervención en el territorio. En este contexto se muestra una investigación realizada en base a metodologías de investigación acción-participación implementadas en una iniciativa empresarial de una localidad de la Comunidad Valenciana. Así, el carácter influyente y la capacidad de integrar saberes, conocimientos y aprendizajes de los diversos actores sociales e institucionales favorecen la promoción y el desarrollo de estrategias capaces de dar respuesta a las distintas problemáticas existent…
Être artiste hors de l’Académie royale : peinture et reconnaissance publique dans le Paris des Lumières (1751-1791)
2021
Position de thèse; International audience