890 resultados para Technical norms
Resumo:
The SAGUAPAC cooperative in the city of Santa Cruz de la Sierra (Eastern Bolivia) is regularly presented as an example of cooperative successes regarding water supply and sanitation. Its efficiency, both economic and technical, is widely considered as the main reason for its attractiveness. However, without denying its importance, we show, through a discourse analysis from and about SAGUAPAC in local media, that moral and non-instrumental factors are crucial in the reproduction of the cooperative. These factors create attachment and affection toward the cooperative, through a storytelling using a four-dimensional rhetoric (mythification, identification, emotionalisation and personification). This storytelling technique, internalized in the local media discourse and materializing the so-called new spirit of capitalism, exploits the affects and instrumentalisation of local myths and legends, as well as the 'camba' ethnic identity. In that, it tends to retain SAGUAPAC members and to canvass new ones, by providing them with recognition in their quality of local community members. However, the mobilisation of social norms and power hierarchies might end up reinforcing the social exclusion of Andean non-camba immigrants, inspite of an a priori inclusive and democratic organisation.
Resumo:
La présente recherche traite des défis posés à l'action publique territoriale par la transition énergétique, transition désormais érigée au rang de priorité par les autorités françaises et suisses, comme plus globalement européennes. Elle prend pour cela appui sur une analyse des démarches de planification énergétique territoriale menées entre 2007 et 2014 sur le territoire franco-valdo-genevois (agglomération du « Grand-Genève »). Considérées comme des laboratoires d'expérimentation de la territorialisation des politiques énergétiques, ces démarches sont ici examinées selon une perspective institutionnaliste et pragmatiste visant à mettre lumière les éléments qui interviennent dans la délimitation du champ des possibles en matière d'action publique énergétique et territoriale. Ce positionnement découle des évolutions observées sur le territoire franco-valdo-genevois durant la période d'étude (chapitre 1). Il découle plus précisément du constat de récurrence de certains points de blocage rencontrés aussi bien dans les démarches de planification énergétique elles-mêmes que dans les travaux méthodologiques qui ont pu être réalisés parallèlement à ces démarches, dans le but d'en affiner les outils techniques et organisationnels de mise en oeuvre. Ainsi, le point de départ de la présente recherche est le constat selon lequel on peine tout autant à construire des solutions énergétiques appropriables et réalisables par les acteurs des territoires concernés qu'à reconfigurer les outils de production de ces solutions. De ce constat découle l'intérêt porté aux cadres institutionnels qui régissent ces planifications énergétiques territoriales. Définis comme l'ensemble des repères - formels et informels - qui rendent possibles en même temps qu'ils contraignent les interactions territorialisées entre les acteurs, ces cadres institutionnels sont placés au coeur de la grille de (re)lecture des expériences de planification énergétique territoriale établie au chapitre 2 de la thèse. En référence aux concepts institutionnalistes et pragmatistes sur lesquels elle prend appui, cette grille conduit à appréhender ces expériences comme autant d'enquêtes contribuant, à travers le travail de mobilisation et construction de représentations territoriales auquel elles donnent lieu, à l'équipement sociocognitif d'un champ d'intervention territorial spécifique. Partant de l'hypothèse selon laquelle les potentialités comme les limites associées à l'équipement sociocognitif de ce champ orientent les possibilités d'action collective, la réflexion consiste en une application de cette grille à une trentaine d'expériences de planification énergétique territoriale. Cette application s'effectue en deux temps, correspondant à deux niveaux de lecture de ces démarches. Le premier porte sur les dispositifs organisationnels et les modalités d'interactions entre les cultures d'action qu'elles réunissent (chapitre 3). Le second se concentre davantage sur les supports cognitifs (représentations territoriales) autour desquels se structurent ces interactions (chapitre 4). Présentés dans le dernier chapitre de la thèse (chapitre 5), les enseignements tirés de ce travail de réexamen des démarches franco-valdo-genevoises de planification énergétique territoriale sont de deux ordres. Ils portent d'abord sur les caractéristiques des cadres institutionnels existants, la manière dont ils orientent ces démarches et délimitent les évolutions possibles dans les modes d'action collective et plus particulièrement d'action publique qui y sont associés. Mais ils portent aussi sur les potentiels de changement associés à ces démarches, et sur les pistes envisageables pour mieux valoriser es potentiels, dont l'activation passe par des évolutions profondes des systèmes institutionnels en place. -- In France as in Switzerland, local authorities stand out as leading players of energy transition, a transition that requires an important renewal of public intervention instruments. It is the stakes and the conditions of such a renewal that the present work aims to examine, based on the experiments of territorial energy planning led on the franco-valdo-genevan cross-border territory. Conceived as initiatives of relocation of the energy supply system, these energy planning initiatives are examined through an institutionalist and pragmatic « reading template ». This « reading template » consists of seeing these energy planning initiatives as pragmatist inquiries aiming, through a collective work of cognitive equipment of the territorial franco-valdo-genevan field of intervention, at the reconstruction of the means of coordination between people about their material, organizational and political territory. It opens towards a double reading of the energy planning initiatives. The first one concentrates on the organizational dimension of these inquiries - i.e. on the cultures of action which they gather and the modalities of interaction between them - whereas the second focuses on the cognitive substance which represents the medium of the interactions. This double reading provides insights at various levels. The first one concerns the (cognitive) territorial field of intervention that these energy-planning experiments contribute to draw. A field which, although better and better characterized in its technical dimensions, remains at the same time limited and " deformed " so that it values more the fossil energy systems, from which we want to release ourselves, than the renewable ones, which we would like to replace them with. The second level of teaching concerns the processes of production of territorial knowledge (PPTK) which presides over the demarcation and « equipment » of the territorial field of intervention. Examined through the institutional norms and the culture of action at stake in them, this PPTK turns out to create a sociocognitive "cross-border" area, the kind of area that could shelter the desired reconfigurations...on the condition that they are beforehand correctly "equipped", in cognitive and also in organizational terms. The determining factor for the quality of this equipment is concentrated in the third category of teaching. Starting with the opportunities created by these energy planning experiments concerning the renewal of public intervention instruments, these elements also allow us to take a new look at the urban area project under construction in this cross-border territory, a project th t shows itself closely linked to the energy experiments through a common challenge of territorialisation.
Resumo:
In recent years, technological advances have allowed manufacturers to implement dual-energy computed tomography (DECT) on clinical scanners. With its unique ability to differentiate basis materials by their atomic number, DECT has opened new perspectives in imaging. DECT has been used successfully in musculoskeletal imaging with applications ranging from detection, characterization, and quantification of crystal and iron deposits; to simulation of noncalcium (improving the visualization of bone marrow lesions) or noniodine images. Furthermore, the data acquired with DECT can be postprocessed to generate monoenergetic images of varying kiloelectron volts, providing new methods for image contrast optimization as well as metal artifact reduction. The first part of this article reviews the basic principles and technical aspects of DECT including radiation dose considerations. The second part focuses on applications of DECT to musculoskeletal imaging including gout and other crystal-induced arthropathies, virtual noncalcium images for the study of bone marrow lesions, the study of collagenous structures, applications in computed tomography arthrography, as well as the detection of hemosiderin and metal particles.
Resumo:
In recent years, technological advances have allowed manufacturers to implement dual-energy computed tomography (DECT) on clinical scanners. With its unique ability to differentiate basis materials by their atomic number, DECT has opened new perspectives in imaging. DECT has been successfully used in musculoskeletal imaging with applications ranging from detection, characterization, and quantification of crystal and iron deposits, to simulation of noncalcium (improving the visualization of bone marrow lesions) or noniodine images. Furthermore, the data acquired with DECT can be postprocessed to generate monoenergetic images of varying kiloelectron volts, providing new methods for image contrast optimization as well as metal artifact reduction. The first part of this article reviews the basic principles and technical aspects of DECT including radiation dose considerations. The second part focuses on applications of DECT to musculoskeletal imaging including gout and other crystal-induced arthropathies, virtual noncalcium images for the study of bone marrow lesions, the study of collagenous structures, applications in computed tomography arthrography, as well as the detection of hemosiderin and metal particles.
Resumo:
Neurophysiology is an essential tool for clinicians dealing with patients in the intensive care unit. Because of consciousness disorders, clinical examination is frequently limited. In this setting, neurophysiological examination provides valuable information about seizure detection, treatment guidance, and neurological outcome. However, to acquire reliable signals, some technical precautions need to be known. EEG is prone to artifacts, and the intensive care unit environment is rich in artifact sources (electrical devices including mechanical ventilation, dialysis, and sedative medications, and frequent noise, etc.). This review will discuss and summarize the current technical guidelines for EEG acquisition and also some practical pitfalls specific for the intensive care unit.
Resumo:
This article examines how Samuelson defined his own role as an economist as a technical expert, who walked what he called the "middle of the road" to-seemingly-stay out of the realm of politics. As point of entry I discuss the highly tempting offers made by Theodore M. Schultz in the 1940s to come over to Chicago, which Schultz persistently repeated over three years and despite strong Chicago faculty resistance. A contrast between Schultz's own experiences as an economic expert at Iowa State, Samuelson's work as an external consultant for the National Resources Planning Board during the Second World War, and the firm support of the MIT administration for Samuelson's research serves to pinpoint the meaning of being technical for Samuelson, and the relation of the technical economic expert to the realm of politics.
Resumo:
Early warning systems (EWSs) rely on the capacity to forecast a dangerous event with a certain amount of advance by defining warning criteria on which the safety of the population will depend. Monitoring of landslides is facilitated by new technologies, decreasing prices and easier data processing. At the same time, predicting the onset of a rapid failure or the sudden transition from slow to rapid failure and subsequent collapse, and its consequences is challenging for scientists that must deal with uncertainties and have limited tools to do so. Furthermore, EWS and warning criteria are becoming more and more a subject of concern between technical experts, researchers, stakeholders and decision makers responsible for the activation, enforcement and approval of civil protection actions. EWSs imply also a sharing of responsibilities which is often averted by technical staff, managers of technical offices and governing institutions. We organized the First International Workshop on Warning Criteria for Active Slides (IWWCAS) to promote sharing and networking among members from specialized institutions and relevant experts of EWS. In this paper, we summarize the event to stimulate discussion and collaboration between organizations dealing with the complex task of managing hazard and risk related to active slides.
Resumo:
Nowadays the Finnish-Russian electric energy interaction is carried out through the back-to-back DC Vyborg substation and several power plants working synchronously with Finnish power system. Constant amount of energy flows in one direction — from Russia to Finland. But the process of electricity market development in Russian energy system makes the new possibilities of electrical cooperation available. The goal of master's thesis is to analyze the current state and possible evolution trends of North-West Russian system in relation with future possible change in power flow between Russia and Finland. The research is done by modelling the market of North-West Russia and examination of technical grid restrictions. The operational market models of North-West region of Russia for the years 2008 and 2015 were created during the research process. The description of prepared market models together with modelling results and their analysis are shown in the work. The description of power flow study process and results are also presented.
Resumo:
The goal of the master's thesis is a detailed research of the technical wind energy potential in Russian Federation: the distribution of the potential all over the territory of the country and the possibility of the application of the potential for power supply of various objects. The main attention of the thesis is devoted to the assessment of wind energy resources (potential) of Russian Federation, both for the territory of country in whole and for every region. Theoretical basic wind energy concepts and the scheme of transformation of kinetic energy of a wind into electric energy by modern wind turbines are given in the work. Also the costs of energy, stimuli of development of wind-engineering and obstacles which impact the industry development are analyzed. The review of existent and projected wind power plants in Russia is carried out.
Resumo:
relationship between productivity and international position of Spanish chemical firms in the period 2005-2011. The goal is to determine whether companies that follow and international strategy, either with exports or by investment in foreign countries obtain greater productivity growth than these that do not operate in global market. For this purpose a panel data set with microdata has been created. A preliminary analysis of the evolution of productivity growth in the sector is carried out. The measurement of Total Factor Productivity is performed. With the estimated TFP we analyze the differentials in productivity growth, comparing the effects of export and investment behavior with non-international firms.