Dissertations / Theses on the topic 'Projet ChArMEx'
To see the other types of publications on this topic, follow the link: Projet ChArMEx.
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Projet ChArMEx.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Claeys, Marine. "Modélisation des aérosols marins et de leur impact radiatif direct sur le bassin méditerranéen dans le cadre du projet CHARMEX." Phd thesis, Toulouse, INPT, 2016. http://oatao.univ-toulouse.fr/17861/1/Claeys_Marine_INPT.pdf.
Abstract:
Les océans couvrant plus de 70 % de la surface de la Terre, les aérosols marins sont une des composantes les plus importantes en terme de concentration atmosphérique. De part leur large gamme de taille, ils interagissent à la fois dans les courtes et grandes longueurs d’onde et impactent ainsi le bilan radiatif à la surface et au sommet de l’atmosphère. Cependant, l’amplitude de cet impact climatique est encore soumise à de nombreuses incertitudes. Actuellement en modélisation, il existe très peu de cas d’études centrés sur les aérosols marins au niveau régional, la plupart étant réalisés au niveau global. Dans ce cadre et afin d’améliorer la connaissance des propriétés des aérosols marins et leurs effets radiatifs dans le bassin méditerranéen, le projet ChArMEx qui s’est déroulé pendant les étés 2013 et 2014, a permis la mise en place de plusieurs sites de mesures, notamment a Ersa (Cap Corse), ainsi que des observations aéroportées. Les observations réalisées à Ersa ont permis de repérer dans une première étude une période (22-26 juin) influencée majoritairement par les aérosols marins lors de l’été 2013 et de caractériser leurs propriétés physico-chimique, optiques et radiatives. De plus, l’impact de ces aérosols marins a pu être comparé à l’influence d’autres types d’aérosols présents dans le bassin méditerranéen (poussières désertiques, aérosols anthropiques et issus de feux de biomasse) également observés pendant la campagne de mesure. L’étude combinée de la composition chimique des aérosols marins et des rétro-trajectoires issues du modèle FLEXPART a permis également de mettre en évidence les multiples origines des aérosols marins, avec des émissions locales et des aérosols âgés associés à du transport longue distance. En se basant sur cette analyse, le modèle MesoNH a été utilisé pour étudier dans un premier temps les émissions, le transport et la concentration atmosphèrique des aérosols marins à l’échelle régionale, sur cette période d'étude. Pour cela, un nouveau schéma d’émission basé sur une paramétrisation récente (Ovadnevaite et al., 2014) a été implémenté dans le modèle. Celle-ci dépend, en plus de la vitesse du vent à la surface, de l’ etat de la mer (représenté par la hauteur des vagues, la température de surface de l’eau ainsi que la salinité). Une première simulation tri-dimensionnelle comprenant trois domaines imbriqués a donc été réalisée sur un domaine méditerranéen du 12 au 27 juin 2013. Les observations réalisées pendant la campagne de mesure ChArMEx-ADRIMED ont permis d’évaluer la capacité du modèle à simuler la concentration en masse et en nombre des aérosols marins ainsi que leur distribution granulométrique. Un deuxième cas d’étude, se déroulant pendant un cas de mistral/tramontane dans le golfe du Lion en juillet 2014, a également été simulé afin d’évaluer dans un second temps les effets radiatifs directs à la surface et au sommet de l’atmosphère (dans les courtes et grandes longueurs d’ondes). Cette simulation est supportée par des observations aéroportées réalisées dans le cadre de la campagne SAFMED+ ainsi que par des observations satellitaires et de télédétection (réseau AERONET). Ce travail indique également un forçage radiatif direct négatif des aérosols marins à la surface, qui est compensé, pour une très faible part, par le forçage radiatif positif exercé dans les grandes longueurs d’ondes.
2
Panopoulou, Anastasia. "VOC source apportionment and emission inventory evaluation over the great Athens, comparison with other cities of the Mediterranean basin." Electronic Thesis or Diss., Ecole nationale supérieure Mines-Télécom Lille Douai, 2019. http://www.theses.fr/2019MTLD0024.
Abstract:
Les COV (Composés Organiques Volatils) jouent un rôle majeur dans la problématique de pollution atmosphérique, puisqu’ils interviennent en tant que précurseurs des composés secondaires comme l’ozone troposphérique (O3) et l’Aérosols Organiques Secondaires (AOS) qui ont des impacts sur la santé et le climat. Afin de mettre en place des stratégies efficaces de réduction de la pollution de l’air, il est crucial de caractériser et quantifier la contribution des principales sources d’émission de COV.Le bassin méditerranéen constitue un environnement complexe, favorisant le développement des épisodes de pollution. Cependant, les mesures de COV dans les zones urbaines de la région restent limitées et les études existantes ont montré des incertitudes significatives quant à la contribution des différentes sources d’émission. Dans ce contexte, Athènes (Grèce) est un cas d’étude intéressant notamment pour les COV. Cette zone urbaine fait face à des dépassements des valeurs limites européennes en d’O3 et d’AOS ainsi qu’une augmentation des émissions de polluants pour des sources spécifiques (par exemple, le chauffage résidentiel au bois).Les travaux présentés dans ce manuscrit portent sur l’étude des COV à Athènes, réalisée dans le cadre du projet international ChArMEX (The Chemistry – Aerosol Mediterranean Experiment). La méthodologie s’appuie sur une campagne de mesure de 17 mois (d’octobre 2015 à février 2017) sur un site représentatif proche du centre-ville, sur deux campagnes intensives d’un mois chacune réalisées à la même station ainsi que sur deux campagnes réalisées en champ proche des sources (en tunnel et en station trafic).Plus de 40 COV de 2 à 16 atomes de carbone (C2 à C16) ont été mesurés, permettant la caractérisation détaillée de leur variabilité temporelle et spatiale sur une base annuelle, suivie de la détermination des facteurs d’influence. Les COV de C2 à C3 étaient mesurés pour la première fois à Athènes. La comparaison aux autres études de COV en zones urbaines a mis en évidence la typologie des sources ainsi que l’importance de la pollution atmosphérique en hiver à Athènes. Concernant les monoterpènes et l’isoprène, composés en général d’origine biogénique, l’analyse a mis en évidence des sources anthropiques dans cette atmosphère urbaine, ce qui fournit des informations intéressantes pour l’évaluation de leur impact sur la qualité de l’air en tant que précurseurs des polluants secondaires. L’application du modèle orienté récepteur « Positive Matrix Factorization » (PMF) sur la base de données annuelles, a permis d’identifier et quantifier les contributions des principaux facteurs associés aux sources de COV. Les émissions liées au transport routier et au chauffage résidentiel ont été déterminées comme les sources de COV dominantes. Une seconde analyse PMF sur la base de donnes des campagnes intensives à d’une part corroboré les résultats et, d’autre part, a conduit à l’identification de sources supplément aires comme l’évaporation de carburants des points stationnairesVOC (Volatile Organic Compounds) are key constituents of atmospheric chemistry and pollution as precursors of harmful compounds like ground ozone and secondary organic aerosols, which in turn have a strong impact on local/regional air quality, climate, vegetation and human health. For that reason and in order to design and implement efficient air pollution control measures, there is a growing interest for their better characterization, as well as the identification, speciation and quantification of their respective sources.Mediterranean basin is a complex environment, favoring the development of severe air pollution events. Despite that, there is a lack of VOC studies in the urban areas of the region, while the existing ones have shown significant uncertainties associated with compounds speciation and the contribution from the different emission sources. Considering this, Athens (Greece) is the ideal place for VOC measurements due to the lack of reported levels for NMHCs the last 15 years, the continuous exceedances of O3 and aerosol concentrations and the increasing emissions from specific pollutant sources (e.g. wood burning for residential heating). In this work, we report the results of an 17-mounth field campaign for NMHCs in Athens (October 2015 – February 2017), under the frame of the international project ChArmEX (The Chemistry – Aerosol Mediterranean Experiment). This was supported by two one-month intensive observation periods (winter and summer) at the same station, and two additional near-source campaigns (tunnel and traffic station). More than 40 VOC with 2 to 16 carbon atoms have been measured giving for the first time a detailed characterization of their temporal and spatial variability on an annual basis, especially for C2 – C3 NMHCs, followed by the determination of its driving parameters. The comparison with other VOC studies in cities worldwide highlighted the role of sources to the observed levels, with significant air pollution for Athens in winter. Furthermore, the analysis indicated that monoterpenes and isoprene, known compounds of biogenic origin, presented a complex variability propably influenced by emissions other than biogenic. The latter provides interesting insights for the assessment of their impact on air quality, as precursors of secondary pollutants. Moreover, the application of the receptor-oriented model Positive Matrix Factorization (PMF) allowed the identification of the main factors related to VOC sources and the quantification of their contribution. Traffic-related emissions and residential heating were determined as the major VOC sources in the city, whereas a second PMF simulation to the intensive observation period gave additional information about sources such as the fuel evaporation from stationary points
3
Jaidan, David Nizar. "Etude des processus d'import et d'export de la pollution gazeuse et particulaire au-dessus du bassin méditerranéen dans le cadre du projet ChArMEx." Thesis, Toulouse 3, 2018. http://www.theses.fr/2018TOU30063/document.
Abstract:
L'objectif de cette thèse est d'étudier les phénomènes d'import et d'export de la pollution gazeuse et particulaire au-dessus du Bassin Méditerranéen (BM). Ce travail consiste dans un premier temps à étudier l'évolution de l'ozone (O3) de surface dans un contexte de changement climatique au-dessus du BM entre 2000 et 2100, en exploitant les sorties issues de 13 modèles participant à l'exercice ACCMIP (Atmospheric Chemistry and Climate Model Intercomparison Project). Nous avons montré que l'ozone de surface diminue entre 2000 et 2030 (2100) pour 3 RCPs (Representative Concentration Pathway) : -14% (-38%) pour le RCP2.6, -9% (-24%) pour le RCP4.5 et -10% (-29%) pour le RCP6.0, alors que pour le scénario RCP8.5, l'ozone de surface reste stable au cours du XXIème siècle. Dans un second temps, nous avons identifié les sources et les chemins de transport de l'O3 et du monoxyde de carbone (CO) représentatifs des différentes régions du BM : l'Est, l'Ouest et le Centre entre 2012 et 2014, en utilisant une approche statistique qui combine des observations de surface et des rétro-trajectoires issues du modèle HYSPLIT (Hybrid Single Particle Lagrangian Trajectory). En général, l'O3 et le CO sont transportés, respectivement, depuis l'Europe continentale et l'Europe de l'Est vers le BM. Finalement, nous avons étudié les phénomènes d'import et d'export de la pollution au-dessus du BM, en utilisant le modèle MOCAGE (Modèle de Chimie Atmosphérique à Grande Échelle) et le modèle HYSPLIT, et en exploitant les observations récoltées lors des deux campagnes de mesures TRAQA (TRAnsport à longue distance et Qualité de l'Air) (été 2012) et GLAM (Gradient in Longitude of Atmospheric constituents above the Mediterranean basin) (août 2014) réalisées dans le cadre du programme ChArMEx (The Chemistry-Aerosol Mediterranean Experiment). Nous avons mis en évidence le transport à longue distance des masses d'air enrichies en O3 et l'impact du Mistral sur le mélange des masses d'air. Le bilan d'O3 et de CO a été aussi réalisé sur le BM pour l'année 2012 à partir des simulations du modèle MOCAGE. Les résultats montrent que le CO est importé vers le BM pendant le printemps et l'été alors que l'O3 est importé vers le BM durant la période janvier-juin puis exporté le reste de l'annéeThe objective of this thesis is to study the import and the export processes of gaseous and particulate air pollution over the Mediterranean Basin (MB). Firstly, we investiga- ted the evolution of surface ozone (O3) over the MB over the time period 2000-2100 in a context of climate change, using the Atmospheric Chemistry and Climate Model In- tercomparison Project (ACCMIP) outputs from 13 models. Compared to the reference period (2000), we found a net decrease in the ensemble mean surface O3 over the MB in 2030 (2100) for 3 RCPs (Representative Concentration Pathway) : -14% (-38%) for RCP2.6, -9% (-24%) for RCP4.5 and -10% (-29%) for RCP6.0. For the RCP8.5 scenario, the ensemble mean surface O3 is almost constant over the MB from 2000 to 2100. Se- condly, we identified the geographical sources and the transport pathways of polluted air masses inducing high levels of surface O3 and carbon monoxide (CO) concentrations in di erent regions of the MB, representative of the west, the center and the east of the MB between 2012 and 2014, using several backward trajectory statistical analyses combining in situ measurements and back trajectories obtained from the HYSPLIT (HYbrid Single- Particle Lagrangian Integrated Trajectory) model. In general, O3 and CO are transported to the MB from continental Europe and Eastern Europe, respectively. Finally, we studied the import and export processes of pollution over the MB using the chemical transport model MOCAGE (MOdele de Chimie Atmosphérique à Grande Échelle) and the HYS- PLIT model. We also investigated in situ measurements carried out during both TRAQA (TRAnsport à longue distance et Qualité de l'Air) (2012) and GLAM (Gradient in Longi- tude of Atmospheric constituents above the Mediterranean basin) (2014) field campaigns performed within the framework of the ChArMEx (The Chemistry-Aerosol Mediterranean Experiment) program. We highlighted the long-range transport of air masses rich in O3 and the impact of the Mistral wind on the air mass mixing. The budget of O3 and CO was also performed over the MB for the year 2012 using the MOCAGE model simulations. We found that the MB is an import area for CO during the spring-summer period, whilst tropospheric O3 is imported to the MB during the January-June period and exported the rest of the year
4
Jacquin, Laure. "Doctrine et pratique de la restauration française à l’épreuve de la Charte de Venise : architectures contemporaines dans les monuments historiques, projets et enjeux." Thesis, Paris Est, 2016. http://www.theses.fr/2016PESC1180.
Abstract:
Interrogeant les rapports entre création et restauration des Monuments historiques après la publication, en 1964, du texte de la Charte de Venise, le travail de recherche s’attache à en observer les conséquences sur la pratique en France. Il repose sur le postulat qu’un tournant est à l’œuvre dans les pratiques, les statuts et la formation des architectes en lien avec les questions patrimoniales. L’appropriation, revendiquée, d’un langage contemporain appuyée par les principes de la Charte de Venise, par des Architectes en Chef des Monuments Historiques (ACMH) après-guerre montre une volonté de lier création et restauration et de faire entrer cette dernière dans la sphère architecturale. Les polémiques suscitées par certaines interventions montrent un intérêt pour la fin de cette césure des pratiques. Cette réflexion se base sur l’étude de projets contemporains dans des monuments historiques pour lesquels les architectes revendiquent l’application des principes de la Charte de Venise. Ce texte théorique entre en conflit avec la doctrine française de la restauration stylistique alors en vigueur et sa diffusion par la pratique a suscité des polémiques. La première intervention étudiée, la restauration de l’ancienne abbatiale de Toussaint par Pierre Prunet, qui représente une première revendication de l’application des principes de la Charte et n’a pas engendré de polémique. Le second cas étudié est la restauration du château de Falaise de Bruno Decaris, avec ce projet éclate une première polémique, suivie de réformes ayant modifié le cadre des Monuments Historiques. Le troisième et dernier cas examiné est celui de la restauration des arènes de Fréjus de Francesco Flavigny, il illustre une étape récente de l’évolution de la situation dans ce domaine. L’étude se développe en trois volets complémentaires : Une histoire institutionnelle du service des monuments Historiques après 1960, les apports du texte de la Charte de Venise dans le contexte français ainsi que le déplacement des intérêts après les années 1980. Le second volet se concentre sur l’analyse architecturale des interventions à la fois dans le traitement de la matière existante et dans le traitement des compléments architecturaux à caractère contemporain. Enfin, le troisième volet s’attache à l’étude de la médiatisation, de la réception et des polémiques entourant ces interventions. Les divers milieux (revues spécialisées dans la restauration, revues d’architecture ou opinion publique) ayant pris part à la diffusion et à la réception des interventions informent sur les porosités à l’œuvre entre créateurs et conservateurs. Ce travail tente d’apporter des réponses aux questionnements qui animent aujourd’hui la pratique et l’enseignement de l’architecture concernant la formation, le statut, les compétences des architectes spécialisés ou non dans la restauration (en chef, du patrimoine, dplg, HMONP) et leurs méthodes d’interventionQuestioning the relationship between creation and restoration of historic monuments after the publication in 1964 of the text of the Charter of Venice, the research aims to observe the consequences on the practice in France. It is based on the premise that a turning point is at work in the practices, rules and the training of architects in relation to heritage issues. Ownership, claimed, a contemporary language supported by the principles of the Charter of Venice, by Chief Architects of Historical Monuments (ACMH) postwar shows a willingness to link creation and restoration and to bring it in the architectural sphere. The controversy aroused by certain actions show interest in the end of this caesura practices. This reflection is based on the study of contemporary projects in historic monuments for which architects claim the application of the principles of the Venice Charter. This theoretical text conflicts with the French doctrine of stylistic restoration in force and its dissemination through the practice has been controversial. The first studied intervention, restoration of the old abbey of Toussaint Pierre Prunet, which represents a first claim of the principles of the Charter and did not cause controversy. The second case study is the restoration of Falaise Castle Bruno Decaris with this project first broke a polemic, followed by reforms that changed the course of Historical Monuments. The third case examined is the restoration of Fréjus arenas Francesco Flavigny, it illustrates a next step in the evolution of the situation in this area. The study develops three complementary components: an institutional history of monuments Historic service after 1960, the contributions of the Venice Charter text in the French context and the movement of interest after the 1980. The second part focuses on architectural analysis of interventions in both the treatment of existing material and in the treatment of architectural additions to contemporary character. Finally, the third component focuses on the study of media coverage, reception and controversy surrounding these interventions. The various media who took part in the distribution and receipt of interventions inform the porosities at work between artists and curators. This work tries to provide answers to questions that drive today's practice and architectural education on training, status, skills, specialized or not in the restoration architects and their methods of intervention
5
Eazell, Diane Patricia. "Justification for a credit union to charter a bank." CSUSB ScholarWorks, 2000. https://scholarworks.lib.csusb.edu/etd-project/1642.
6
Mobarak, Barbara Ann. "The development of a computer literacy curriculum for California charter schools." CSUSB ScholarWorks, 2004. https://scholarworks.lib.csusb.edu/etd-project/2683.
Abstract:
To develop leaders for the 21st century, schools must be able to prepare students to meet the high academic, technical and workforce challenges. Charter schools are increasingly attempting to meet these challenges by educating students through innovative means and by creating effectual educational programs that are more conducive to the needs of the student. This document provides a computer literacy curriculum, which will facilitate student learning of computer literacy skills.
7
Young, Susan Amanda. "A faculty technology training program for the teachers of Washington Charter School." CSUSB ScholarWorks, 1997. https://scholarworks.lib.csusb.edu/etd-project/1535.
8
Hackett-Jones, Emily Jane. "Non-static brane probes, topological charges and calibrations." Thesis, Durham University, 2004. http://etheses.dur.ac.uk/3042/.
Abstract:
In this thesis we consider probe branes in 10- and 11-dimensional supergravity backgrounds. Firstly, we consider probing a class of 11-dimensional backgrounds with giant gravitons. These backgrounds arise from lifting solutions of 4-dimensional U(1)(^4) and 7-dimensional U(1)(^2) gauged supergravities. We find that giant gravitons degenerate to massless particles exist in arbitrary lifted backgrounds, and furthermore both these objects are degenerate to massive charged particles probing the associated lower-dimensional gauged supergravity solutions. We then move on to consider superalgebras for M2- and M5-brane probes in general 11-dimensional supersymmetric backgrounds. We derive the form of the topological charges which appear in the super translation part of the algebra. These charges are given by the integral (over the spatial world-volume of the brane) of certain closed forms constructed from Killing spinors and background fields. The super- translation algebra allows us to derive BPS bounds on the energy/momentum of probe branes in these general supersymmetric backgrounds. These bounds can be interpreted as generalized calibration bounds for these branes. We then use a similar procedure in type IIB supergravity to construct a calibration bound for a giant graviton in AdS(^5) x S(^5). As a by-product of this construction, we find a number of differential and algebraic relations satisfied by p-forms constructed from Killing spinors in type IIB supergravity. These relations are valid for the most general supersymmetric backgrounds. We then show that the calibration bound which we have constructed is saturated by a large class of general giant gravitons in AdS(^5) x S(^5), which are defined via holomorphic surfaces in C(^1)'(^2) x C(^3). Moreover, dual giant gravitons also saturate the calibration bound. We find that both these branes minimize "energy minus momentum" in their homology class.
9
Regis, Shirley Ann. "Charles Brockden Brown's place within the gothic and the influence of early America's social issues on Brown's writing." CSUSB ScholarWorks, 2007. https://scholarworks.lib.csusb.edu/etd-project/3193.
Abstract:
The purpose of this thesis is to show that Charles Brockden Brown was influenced by the American Revolution and the incidents that come after it. It is suggested that Brown created a gothic fiction that was intended to be a critique on the American Revolution by using murder narrratives present during the time to create his characters. Gothic fiction consists of many elements such as setting arechetypal characters, terror, emotion, psychological turmoil and language use.
10
Jouaville, Quentin. "Jardin de l’Empire et clef de la monarchie universelle : l’Italie au cœur du projet de Mercurino Gattinara." Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0215/document.
Abstract:
Mercurino Arborio di Gattinara (1465-1530) est un homme d’État et cardinal piémontais du début du XVIe siècle. Entré au service de Marguerite d’Autriche, duchesse de Savoie, puis de son père, l’empereur Maximilien Ier de Habsbourg, il est dès lors fidèle à cette famille qu’il sert en tant que juriste, conseiller et diplomate. En 1518, il devient le grand chancelier de tous les territoires que Charles Quint a réunis sous son autorité. Chargé par conséquent d’administrer un empire européen, mosaïque de royaumes et principautés morcelés, Gattinara nourrit son action en élaborant l’idée d’une monarchie universelle, directement inspirée de l’Empire romain, dont le Habsbourg serait le monarque unique, le pasteur chargé par Dieu de garantir la paix en Europe et de défendre la république chrétienne. En son cœur, l’Italie, ce « jardin de l’Empire ». Alors, mythe ou réalité ? Simple rhétorique ou véritable politique ? Ce travail entend montrer deux choses. D’une part que l’Empire n’est pas seulement un fantôme qui ressurgit avec l’avènement de Charles Quint, mais qu’il est encore profondément ancré dans les réalités italiennes et que Gattinara a pu s’appuyer sur les ressorts qu’il offrait pour mettre en place sa politique. D’autre part que la monarchie universelle du chancelier n’est pas seulement pure rhétorique, destinée à fournir à l’empire du Habsbourg une propagande et une idéologie commune, mais qu’elle devait également s’accomplir car elle faisait partie d’un schéma divin bien plus large. Le projet de Gattinara n’a en effet pas pour cadre uniquement l’empire de Charles Quint, il prend place dans la conception d’une histoire et d’une vision du monde ordonnée par Dieu et dans laquelle chacun est destiné à tenir le rôle qui lui a été confiéMercurino Arborio di Gattinara (1465-1530) is a Piedmontese statesman and cardinal of the early sixteenth century. He entered the service of Margaret of Austria, Duchess of Savoy, then his father, Emperor Maximilian I of Habsburg, and became faithful to this family he serves as a lawyer, adviser and diplomat. In 1518, he became the grand chancellor of all the territories that Charles V united under his authority. Responsible for administering a European empire, mosaic of kingdoms and divided principalities, Gattinara nourishes his action by developing the idea of a universal monarchy, directly inspired by the Roman Empire, of which the Habsburg would be the single monarch, the pastor entrusted by God to guarantee peace in Europe and to defend the Christian republic. He placed Italy at its heart, as "garden of the Empire". So, myth or reality? Simple rhetoric or real politics? This thesis aims to show two things. On the one hand that the Empire is not only a ghost that resurfaced with the advent of Charles V, but that it is still deeply rooted in the Italian realities and that Gattinara was able to rely on the springs that he offered to set up his policy. On the other hand, the Chancellor's universal monarchy is not only pure rhetoric, intended to provide the Habsburg Empire with propaganda and a common ideology, but it must also be fulfilled because it was part of a Divine pattern much wider. The project of Gattinara does not have as a framework only the empire of Charles V, it takes place in the conception of a history and a vision of the world ordained by God and in which each one is destined to take the role which has been entrusted to him
11
Ouahès, Rachid Cohen Jean-Louis. "Le forum et l'informe projet et régulation publique à Alger, 1830-1860 /." Saint-Denis : Université de Paris 8, 2008. http://www.bu.univ-paris8.fr/web/collections/theses/OuahesThese1.pdf.
12
TAMBURELLA, CLAIRE. "Projet p. I. A. F. E : production d'etats de charges elevees pour des ions radioactifs." Paris 7, 1996. http://www.theses.fr/1996PA077138.
Abstract:
La transformation d'un faisceau d'ions monocharges en un faisceau d'ions multicharges est un important probleme dans les projets d'acceleration de faisceaux radioactifs. Il s'agit d'effectuer cette transformation avec le meilleur rendement possible et dans un temps le plus court possible pour eviter la perte des particules par degenerescence radioactive. Nous proposons une methode d'ionisation par l'intermediaire d'une source ecr (electron cyclotron resonance). Il s'agit fondamentalement de realiser une capture rapide, par le plasma ecr, des elements radioactifs injectes dans cette source sous forme d'un faisceau d'ions monocharges. Cette methode donne de tres bons resultats (rendement de 2 a 6 pour cent pour passer de l'etat de charge 1+ a 9+) pour l'ionisation des alcalins, gaz rares et metalliques, avec des temps de reponses rapides permettant d'ioniser des produits radioactifs de duree de vie inferieure a la seconde
13
Vytrhlík, Petr. "Využití nástrojů projektového managementu v praxi." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2017. http://www.nusl.cz/ntk/nusl-316950.
Abstract:
Diploma thesis focuses on the design of a project solution for the creation of internet shop for a selected company with using project management methods. The thesis describes the theoretical knowledge about project management and analyses the corporate environment, based on which is created a proposal for solution of a project for successful realization of the new e-shop.
14
Doucette, Wendy C. "Master Your Time and Project Management." Digital Commons @ East Tennessee State University, 2017. https://dc.etsu.edu/etsu-works/5368.
Abstract:
Would you like to change the way you manage your time and your work with free, easy, non-technical methods? If your desktop is covered with icons, you have multiple flash drives, you never back up anything or you re-do work you're pretty sure you've already done because you can't find it or aren't sure which is the latest version, this is for you! The secret to never procrastinating again will also be revealed.
Learning outcomes: Choose from three organizational systems to combat procrastination Utilize multiple, overnight, and cloud backups to safeguard your files Apply automation and synchronization to simplify your life
15
Toms, Grydon Arthur. "Legends of the shakeguts." CSUSB ScholarWorks, 1991. https://scholarworks.lib.csusb.edu/etd-project/844.
16
Zee, Kah Yep. "Design of the electronics and optics needed to support charge-coupled devices : a project report." Scholarly Commons, 1989. https://scholarlycommons.pacific.edu/uop_etds/2188.
17
Milhan, Trish. "Developing new approaches to Dickens' Great Expectations." CSUSB ScholarWorks, 1993. https://scholarworks.lib.csusb.edu/etd-project/707.
18
Ouahès, Rachid. "Le forum et l'informe : projet et régulation publique à Alger, 1830-1860." Paris 8, 2006. http://octaviana.fr/document/121322068#?c=0&m=0&s=0&cv=0.
Abstract:
Cette thèse examine les conditions de la transformation de la ville d’Alger, dans les trente premières années de sa colonisation et dans la perspective des pratiques transmises au XXe siècle. Elle tente de faire un lien entre ces pratiques urbanistiques et les idéologies politiques qui les sous-tendent, en mettant en lumière la dimension réactive de celles-ci, dans le contexte libéral du régime de la Monarchie de Juillet. En se basant sur les concepts avancés notamment par Michel Foucault, Gilles Deleuze et Félix Guattari, à partir du contexte de la décolonisation, elle réexamine certains aspects de son histoire du point de vue des politiques et de l’esthétique urbaines, liés aux réflexes de déterritorialisation et à l’ouverture d’un champ expérimental outrepassant les résistances sociales et culturelles du contexte métropolitain. Avec l’exportation des pratiques d’organisation et de contrôle du territoire, le mouvement colonial a également exacerbé les conflits entre les sensibilités libérale et étatique, qui ont dominé le champ de sa culture et de sa politique jusque dans l’entre-deux-guerres. Les expériences des protectorats du Maroc et de Tunisie au tournant du XXe siècle éclairent comparativement la dimension libérale donnée terrain algérois, ainsi que la résistance de certaines institutions étatiques et militaires attachées aux principes développés depuis les Lumières et sous l’Empire, notamment dans les corps du Génie militaire et des Ponts et Chaussées. L’érection au centre de la ville pré-coloniale, de la place du Gouvernement, sur des fondements spéculatifs, est le premier épisode du conflit durable qui s’installera dans les opérations d’alignement des rues, de rénovation des bâtiments publics ou d’extension à l’extérieur des remparts, et gardera une pertinence jusque dans les années 1950. Les dimensions politique et esthétique de cette opposition sont révélées par l’attribution fautive de la conception du Front de mer d’Alger à l’architecte Chassériau, dans un geste de défense du « municipalisme » et dans une conception libérale de l’art qui a des origines dans la distinction entre « monuments » et « documents » et aux questionnements de la période romantique, relatifs à l’entreprise coloniale. La notion d’ « informe » que Georges Bataille développera dans le même temps, en réaction, à cette conception de l’art, est ainsi éclairée par l’irruption de la sphère coloniale dans la culture classique occidentaleThis thesis looks at the conditions in which Algiers had been transformed, in the first three decades of colonial rule, experimenting principles that led to twentieth century urban practice. The context of liberal policies undertaken under the Louis-Philippe regime, has given to the algerian experiment a peculiar liberal dimension that had been challenged by some state institutions like the civil and military engineering Corps, from the very first undertaking, that is the openning of the “Place du Gouvernement”, in 1831. Using concepts that had been mainly developped by Michel Foucault, Gilles Deleuze and Félix Guattari, in the aftermath of the decolonizing process, this thesis tries to reveal some of the deterritorialization reflexes in the algerian context, along with conflicts dividing liberals and state oriented policies. It also tries to show the ties that bring the concept of “informe”, built by Georges Bataille on the distinction of “monuments” versus “documents”, as the colonial sphere is inserted in the classical western culture
19
Lundkvist, Niklas. "Bremsstrahlung Luminosity Monitoring for SCRIT Project (Report part 1)." Thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-173877.
Abstract:
The purpose of the SCRIT project is to determine size and shape of short-lived and rarely-produced nuclei by elastic electron scattering, which is the best probe for the structure studies, for the first time. In traditional electron scattering, a solid target having an order of 1023 nuclei/cm^2 is normally used, which is not possible for short-lived and rarely-produced nuclei. In this project a Self Containing Radioactive Isotope Target scheme (SCRIT) is going to be employed. This innovative ion-trap method is shown to be a way to make measurements with a very small amount of nuclei, an order of only 106 nuclei. In order to determine the absolute cross section for elastic electron scattering for structure study, the simulates measurement of the bremsstrahlung from the trapped nuclei is required. Since the bremsstrahlung cross section for a nucleus of the atomic number Z is well know, the precise measurement of the bremsstrahlung provides the luminosity. My theme in this SCRIT project was a construction of a bremsstrahlung luminosity monitor. It consists of a position monitor for measuring the spatial distribution of bremsstrahlung and a Pb-glass Cerenkov detector for energy measurement. My efforts have been mainly devoted to the construction of a position monitor system using fiber scintillators. The construction of the position monitor was divided into five parts; detector construction, support construction, trigger detector construction, software programming, software testing and detector tests. The position monitor consists of two sets of fiber scintillation detectors. Each of them uses 16 fibers, Bicron BCF-10 with a cross section of 2x2mm^2, optically coupled to a multi-anode photomultiplier, (Hamamatsu H6568-10). The position monitor can measure the XY distribution of bremsstrahlung. Strictly speaking, the fiber detector detects not bremsstrahlung directly but electrons and/or positrons by pair creation of bremsstrahlung in a materials. The data acquisition system has been programmed in NI LabVIEW. The software is an advanced X/Y-coordinate counting system, which can additionally preform functions as save data to file and 3D-plot to determine the spreading of the bremsstrahlung luminosity. The results can be saved and transferred online to a server so that is possible to access the data from anywhere. The system has been tested using beta rays from 90Sr source. The results of the test shown that the detectors can detect minimum ionizing particle, i.e. electrons and positrons. The detector and software testings shows that the system is ready to use for luminosity measurements at SCRIT experiment. This system I constructed surely provides a new and useful information for the SCRIT experiments.SCRIT Project
20
Pereira, Taís Silva. "Pluralismo, política e julgamento: para um projeto crítico à luz da filosofia de Charles Taylor." Universidade do Estado do Rio de Janeiro, 2013. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=7362.
Abstract:
O objetivo da tese de doutorado consistirá na defesa de uma alternativa para os dilemas políticos concernentes à incomparabilidade no interior de uma comunidade específica ou entre comunidades distintas, presente nas discussões em torno do pluralismo contemporâneo. Esta via é inspirada nos conceitos de bens constitutivos, avaliações fortes e articulação, desenvolvidos pelo filósofo canadense Charles Taylor, e é também uma tentativa de se pensar acerca de um projeto de crítica política que leve em consideração a motivação como elemento incontornável para a filosofia prática. A incomparabilidade, isto é, impossibilidade de critérios no julgamento entre práticas específicas, mas com repercussões públicas, levanta a questão de até que ponto é possível avaliar e deliberar racionalmente sobre modos de vida distintos e, às vezes, auto-excludentes. Tal problemática pode ser vista fortemente no chamado debate liberal-comunitarista, na década de 1980, bem como em seus desdobramentos nas discussões acerca do multiculturalismo, na década seguinte. E ainda, mais recentemente, nos impasses em torno do papel da religião na esfera pública. Mais do que pontos divergentes acerca da questão do julgamento, os que essas discussões também evidenciam é um debate mais central acerca do lugar que pode ocupar a política diante de nossa situação bem como as categorias pelas quais compreendemos o fenômeno do pluralismo. Sob a alcunha de comunitarista, o pensamento de Taylor aparece como uma forma atrativa por não se submeter ao relativismo (a impossibilidade de critério) e tampouco a um universalismo forte (baseado em critérios gerais e anteriores às práticas), ao desenvolver uma ontologia fundada em um conflito de bens constitutivos em disputa, sem desconsiderar o fenômeno do pluralismo. Com efeito, isto se dá na medida em que diante de práticas divergentes e concorrentes há implícita ou explicitamente uma posição acerca de como e a partir de onde podemos nos posicionar criticamente frente ao pluralismo vigente, uma vez que movimentos, discursos e relações são construídos em nome daquilo que se apresenta efetivamente como valioso ou digno de respeito e admiração. Neste sentido, qualquer tentativa de avaliação já diz respeito a nossa compreensão: de nós, do mundo e de nossa relação com o mundo. Um projeto crítico, levando em consideração nossas fontes que impulsionam a ação, requer um olhar detalhado que o pensamento de Taylor pode oferecer, especialmente a partir da relação entre os conceitos supracitados.The purpose of this doctoral thesis consists in defending an alternative for the political dilemmas related to the issue of incomparability within specific communities or among different communities - an issue which is often discussed in the context of contemporary pluralism. This line of thought is inspired by the concepts of constitutive goods, strong evaluations and articulation, as defined by the Canadian philosopher Charles Taylor, and it is also an attempt to think about a political science project which adopts motivation as an inescapable element for practical philosophy. Incomparability, that is, the impossibility of using appropriate criteria for judging specific practices which incurs in public repercussions, raises the question of up to what extent it is possible to rationally evaluate and deliberate on distinct modes of life, which sometimes exclude each other. This set of problems can be strongly identified in the so-called liberal-communitarian debate of the 80s, and its developments are easily spotted in the discussions on multiculturalism which arose in the 90s, as well as in more recent dilemmas regarding the role of religion within the public sphere. Such discussions have brought about not only diverging points on the issue of judgment; they have also highlighted a more central debate regarding the standing that politics is able to take with regard to our situation, as well as the categories through which we grasp the phenomenon of pluralism. Under the epithet of communitarian, Taylors theoretical approach arises as an interesting pathway to be taken, since it doesnt subject itself neither to a relativistic perspective (the impossibility of finding appropriate criteria), nor to a strong universalism (which is based on general criteria established prior to the practices), by developing an ontology established upon the conflict of competing constitutive goods, without overlooking the phenomenon of pluralism. In fact, this happens when, confronted with diverging and rivaling practices, there is, either implicitly or explicitly, a position regarding how and from where we are able to take a critical stance towards the actual pluralism, since movements, discourses and relationships are built on behalf of what presents itself as being effectively valuable or worthy of respect and admiration. In this sense, any attempt at performing evaluations is automatically linked to our understanding of ourselves, of the world and of our relationship with the world. Taking into account our sources, from which action itself arises, a critical project requires attentive consideration, and this can be offered by Taylors reasoning, especially with regard to the concepts mentioned above.
21
Senentz, Daniel I. Jr. "The Andry Family, The 1811 Slave Revolt, and The German Coast Project." ScholarWorks@UNO, 2019. https://scholarworks.uno.edu/td/2642.
Abstract:
The German Coast Project explores the early nineteenth century history of the Louisiana’s German Coast, spanning its formative years, the 1811 Slave Revolt, and the aftermath of the revolt, through the perspective of the Andry family. The website is powered through Omeka software, which creates a historical exhibition of compiled research. In addition, ArcGIS contributed to the website’s construction, as it allowed for the inclusion of interactive programs and maps within the website. Designed for high school students and genealogists, The German Coast Project creates new scholarship pertaining to the German Coast and the 1811 Slave Revolt, through the often-overlooked perspective of the Andry family. The primary theme of the project is to portray how Manuel Andry and his family were able to prosper financially after the 1811 Slave Revolt, even though they suffered a heavy emotional loss.
22
Doucette, Wendy C. "Organized at Last!: Free, Immediate Time and Project Management Hacks That Will Transform Your Life." Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etsu-works/5361.
Abstract:
Change the way you manage your time and your work for good, right now, today! If your desktop is covered with icons, you have multiple flash drives, you never back up anything or you re-do work you're pretty sure you've already done because you can't find it or aren't sure which is the latest version, this is for you! Using easy, practical principles from knowledge and project management, we'll talk about PC file structure and versioning; physical and virtual storage and backups; bookmark management; feeds and alerts; effective e-mail; time management; and cloud computing. The secret to never procrastinating again will also be revealed!
23
Dupouey, Catherine Jimenez Laurie Le Deunf Claudine Salaün Jean-Michel. "Cahier des charges d'une expérimentation de prêt de livres électroniques à l'échelle d'un département." [S.l.] : [s.n.], 2003. http://www.enssib.fr/bibliotheque/documents/dcb/M-2003-RECH-18-dupouey.pdf.
24
Maoudj, Abdelhakim. "Les TIC dans les PME : usage, contraintes, appropriation nécessité d’une approche de facteurs immatériels : humains -culturels, organisationnels - managériaux… : pour la réussite des projets d’implantation de systèmes d’Information : étude de cas : les PME Algériennes." Electronic Thesis or Diss., Paris 8, 2017. http://www.theses.fr/2017PA080015.
Abstract:
D’Implantation de Systèmes d’Information. Etude de cas : Les PME AlgériennesNotre thèse est consacrée à l’étude des technologies de l’information et de communication (TIC), leurs usages, impacts et leurs appropriations ainsi que les contraintes qui freinent leur intégration dans les petites et moyennes entreprises (PME). Notre étude a permis : Analyser les facteurs d’acceptabilité du système d’information (SI) en adoptant une approche comportementale et montrer la nécessité d’une approche immatérielle (Humaine/Culturelle, organisationnelle /managériale…) dans la conduite et la gestion du projet SI.Prendre en considération deux niveaux d’analyse : Le niveau micro pour l’analyse des facteurs immatériels relatifs à la méthodologie du projet d’implantation de SI, et les facteurs immatériels relatifs aux phases du projet SI. Le niveau macro pour l’analyse des facteurs immatériels relatifs à la stratégie d’aide et d’assistance, de diffusion des TIC dans les PME. La conception d’un modèle de recherche et effectuer deux tests : Le premier test de base de notre modèle en pré-adoption a permis de révéler une corrélation positive et statistiquement significative entre les facteurs immatériels et les facteurs d’acceptabilité. Communiquez les résultats du premier test. Le deuxième test en post-adoption qui nous a permis de : Confirmer la continuité de l’acceptabilité du SI en post-adoption avec l’augmentation du taux d’acceptabilité du SI. Confirmer la continuité de la prise en compte des facteurs immatériels dans le projet d’implantation du SI avec l’augmentation du taux d’immatérialité. Déduire que notre approche immatérielle a permis d’améliorer le taux d’acceptabilité du SI et, par conséquent, augmenter le taux de succès du projet d’implantation du SIOur thesis is devoted to the study of information technology and communication (ICT), their uses, impacts and their appropriations as well as the constraints which slow down their integration in small and medium-sized enterprises (SME). Our research allowed :To analyze the acceptability factors of the information system by adopting a behavioral approach and aims at showing the necessity of an immaterial approach (Human / Cultural, organizational / managerial ...) in the conduct and management of the project of the information system (IS). To Consider two levels of analysis: The micro level to analyze the immaterial factors relative to the methodology of the implementation project of IS and the immaterial factors relative to the phases of the project of the IS. The macro level to analyze the immaterial factors relative to the strategy of assistance and support, diffusion of ICT in SME. To Concept design of a research model and doing two tests: The first basic test of our model in pre-adoption allowed to show a statistically significant correlation between the immaterial factors and the acceptability factors. Communicate the results of the first test. The second test model in post-adoption phase allowed to confirm the continuity of the acceptability of IS in post-adoption with the increase of the rate of acceptability of IS. Confirm the continuity of the consideration of the immaterial factors in the project of implementation of an IS with the increase of the rate of system immateriality. Deduct that our immaterial approach allowed to improve the rate of acceptability of the IS and, consequently, to increase the rate of success of the project of implementation of IS
25
Khan, Seema. "A Cognitive Behavioral Intervention for Trauma in Saito Pico-Union Charter School| A Grant Proposal Project." Thesis, California State University, Long Beach, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10751798.
Abstract:
The purpose of the proposed project was to establish the need for trauma-focused school-based program for at-risk urban youth, to identify a well-matched funding source, and to write a grant with the likelihood of being awarded funding. It is well established that youth who have experienced traumatic life events are more likely to suffer from mental and physical health problems. Experiencing childhood trauma puts youth at risk of negative life outcomes, such as self-harm behavior, delinquency and perpetration of violence, low educational attainment, unemployment, poverty, and dependence on public assistance. To address this social problem, the proposed treatment program is a school-based, trauma-focused, cognitive therapy-based intervention with proven success rates.
The Ralph Parsons Foundation was identified as the most suitable funding source for this project because the goals of the project align with the foundation’s areas of focus for at-risk youth.
Along with identifying the needs of underprivileged groups and advocating for services to meet those needs, strong grant writing skills allow social workers to attain the funds necessary to support these services. The actual submission for funding of this grant proposal was not a requirement for the fulfillment of this thesis.
26
Vu, Nam Thanh. "A solid state beta camera for imaging charged particle emititing probes in microreactors." Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1619095791&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.
27
Teodoro, Jorge Benedito de Freitas. "As imagens da modernidade no Projeto das Passagens de Walter Benjamin." reponame:Repositório Institucional da UFOP, 2014. http://www.repositorio.ufop.br/handle/123456789/3902.
Abstract:
Programa de Pós-Graduação em Filosofia. Departamento de Filosofia, Instituto de Filosofia, Artes e Cultura, Universidade Federal de Ouro Preto.Submitted by Oliveira Flávia (flavia@sisbin.ufop.br) on 2014-11-07T19:51:16Z No. of bitstreams: 2 license_rdf: 22190 bytes, checksum: 19e8a2b57ef43c09f4d7071d2153c97d (MD5) DISSERTAÇÃO_ImagensModernidadeProjeto.pdf: 946354 bytes, checksum: 7891701acff5462b132bb408a16d350c (MD5)
Rejected by Gracilene Carvalho (gracilene@sisbin.ufop.br), reason: a pedido on 2014-11-10T15:15:36Z (GMT)
Submitted by Oliveira Flávia (flavia@sisbin.ufop.br) on 2014-11-10T17:06:46Z No. of bitstreams: 2 license_rdf: 22190 bytes, checksum: 19e8a2b57ef43c09f4d7071d2153c97d (MD5) DISSERTAÇÃO_ImagensModernidadeProjeto.pdf: 911322 bytes, checksum: f1a38398300513496b74046f0bc9e648 (MD5)
Approved for entry into archive by Gracilene Carvalho (gracilene@sisbin.ufop.br) on 2014-11-17T14:51:26Z (GMT) No. of bitstreams: 2 license_rdf: 22190 bytes, checksum: 19e8a2b57ef43c09f4d7071d2153c97d (MD5) DISSERTAÇÃO_ImagensModernidadeProjeto.pdf: 911322 bytes, checksum: f1a38398300513496b74046f0bc9e648 (MD5)
Made available in DSpace on 2014-11-17T14:51:26Z (GMT). No. of bitstreams: 2 license_rdf: 22190 bytes, checksum: 19e8a2b57ef43c09f4d7071d2153c97d (MD5) DISSERTAÇÃO_ImagensModernidadeProjeto.pdf: 911322 bytes, checksum: f1a38398300513496b74046f0bc9e648 (MD5) Previous issue date: 2014
Este trabalho consiste na investigação do conceito de modernidade no Projeto das Passagens de Walter Benjamin (2009), com ênfase no arquivo temático “J - Baudelaire”. Mostraremos, com o desenvolvimento da dissertação, como Benjamin preenche o seu mosaico imagético sobre a modernidade. Entre as imagens recolhidas pelo filósofo nos diversos arquivos temáticos do Projeto das Passagens, tomaremos duas como representantes das principais configurações do conceito benjaminiano de modernidade, a saber, a imagem de Paris como a metrópole moderna e a imagem do poeta francês Charles Baudelaire, ambas consideradas em um viés que prioriza a constituição alegórica da modernidade em Benjamin. ____________________________________________________________________
ABSTRACT: This work consists in the investigation of the modernity concept in the Project of Walter Benjamin’s (2009) Passagens, with emphasis on the thematic archive “J-Baudelaire”. We will show, with the development of this thesis, how Benjamin fills in his image mosaic about modernity. Between the images collected by the philosopher in the diverse thematic archives of the Project of Passagens, we will take two as representative of the main configuration of the concept of modernity, namely, the image of Paris as the modern metropolis and the image of the French poet Charles Baudelaire, both considered by the bias that prioritize the allegorical constitution of the Benjaminian modernity.
28
Chudý, Michal. "Zavedení projektové kultury do firmy MoroSystems." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2013. http://www.nusl.cz/ntk/nusl-224156.
Abstract:
This master’s thesis describes life cycle phases management of the project Implementation of the project culture in the MoroSystems company from the perspective of a project manager. The thesis comprehensively describes the project from its inception, through planning, implementation up to handover of the outcomes to the customer, completion and evaluation. The thesis contains attachments which document meetings with the customer and project management artifacts created at different stages of the project.
29
Maoudj, Abdelhakim. "Les TIC dans les PME : usage, contraintes, appropriation nécessité d’une approche de facteurs immatériels : humains -culturels, organisationnels - managériaux… : pour la réussite des projets d’implantation de systèmes d’Information : étude de cas : les PME Algériennes." Thesis, Paris 8, 2017. http://www.theses.fr/2017PA080015.
Abstract:
D’Implantation de Systèmes d’Information. Etude de cas : Les PME AlgériennesNotre thèse est consacrée à l’étude des technologies de l’information et de communication (TIC), leurs usages, impacts et leurs appropriations ainsi que les contraintes qui freinent leur intégration dans les petites et moyennes entreprises (PME). Notre étude a permis : Analyser les facteurs d’acceptabilité du système d’information (SI) en adoptant une approche comportementale et montrer la nécessité d’une approche immatérielle (Humaine/Culturelle, organisationnelle /managériale…) dans la conduite et la gestion du projet SI.Prendre en considération deux niveaux d’analyse : Le niveau micro pour l’analyse des facteurs immatériels relatifs à la méthodologie du projet d’implantation de SI, et les facteurs immatériels relatifs aux phases du projet SI. Le niveau macro pour l’analyse des facteurs immatériels relatifs à la stratégie d’aide et d’assistance, de diffusion des TIC dans les PME. La conception d’un modèle de recherche et effectuer deux tests : Le premier test de base de notre modèle en pré-adoption a permis de révéler une corrélation positive et statistiquement significative entre les facteurs immatériels et les facteurs d’acceptabilité. Communiquez les résultats du premier test. Le deuxième test en post-adoption qui nous a permis de : Confirmer la continuité de l’acceptabilité du SI en post-adoption avec l’augmentation du taux d’acceptabilité du SI. Confirmer la continuité de la prise en compte des facteurs immatériels dans le projet d’implantation du SI avec l’augmentation du taux d’immatérialité. Déduire que notre approche immatérielle a permis d’améliorer le taux d’acceptabilité du SI et, par conséquent, augmenter le taux de succès du projet d’implantation du SIOur thesis is devoted to the study of information technology and communication (ICT), their uses, impacts and their appropriations as well as the constraints which slow down their integration in small and medium-sized enterprises (SME). Our research allowed :To analyze the acceptability factors of the information system by adopting a behavioral approach and aims at showing the necessity of an immaterial approach (Human / Cultural, organizational / managerial ...) in the conduct and management of the project of the information system (IS). To Consider two levels of analysis: The micro level to analyze the immaterial factors relative to the methodology of the implementation project of IS and the immaterial factors relative to the phases of the project of the IS. The macro level to analyze the immaterial factors relative to the strategy of assistance and support, diffusion of ICT in SME. To Concept design of a research model and doing two tests: The first basic test of our model in pre-adoption allowed to show a statistically significant correlation between the immaterial factors and the acceptability factors. Communicate the results of the first test. The second test model in post-adoption phase allowed to confirm the continuity of the acceptability of IS in post-adoption with the increase of the rate of acceptability of IS. Confirm the continuity of the consideration of the immaterial factors in the project of implementation of an IS with the increase of the rate of system immateriality. Deduct that our immaterial approach allowed to improve the rate of acceptability of the IS and, consequently, to increase the rate of success of the project of implementation of IS
30
Venkatachalam, Vivek. "Single Electron Probes of Fractional Quantum Hall States." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10478.
Abstract:
When electrons are confined to a two dimensional layer with a perpendicular applied magnetic field, such that the ratio of electrons to flux quanta \((\nu)\) is a small integer or simple rational value, these electrons condense into remarkable new phases of matter that are strikingly different from the metallic electron gas that exists in the absence of a magnetic field. These phases, called integer or fractional quantum Hall (IQH or FQH) states, appear to be conventional insulators in their bulk, but behave as a dissipationless metal along their edge. Furthermore, electrical measurements of such a system are largely insensitive to the detailed geometry of how the system is contacted or even how large the system is... only the order in which contacts are made appears to matter. This insensitivity to local geometry has since appeared in a number of other two and three dimensional systems, earning them the classification of "topological insulators" and prompting an enormous experimental and theoretical effort to understand their properties and perhaps manipulate these properties to create robust quantum information processors. The focus of this thesis will be two experiments designed to elucidate remarkable properties of the metallic edge and insulating bulk of certain FQH systems. To study such systems, we can use mesoscopic devices known as single electron transistors (SETs). These devices operate by watching single electrons hop into and out of a confining box and into a nearby wire (for measurement). If it is initially unfavorable for an electron to leave the box, it can be made favorable by bringing another charge nearby, modifying the energy of the confined electron and pushing it out of the box and into the nearby wire. In this way, the SET can measure nearby charges. Alternatively, we can heat up the nearby wire to make it easier for electrons to enter and leave the box. In this way, the SET is a sensitive thermometer. First, by operating the SET as an electrometer, we measure the local charge of the \(\nu = 5/2\) FQH state. An immediate consequence of measuring fractionally quantized conductance plateaus is that the charge of local excitations should be a fraction of \(e\), the charge of an electron. The simplest charge that would be expected at \(\nu = 5/2\) would \(e/2\). However, if the charged particles that condense into the \(\nu = 5/2\) FQH state are paired, the expected local charge becomes \(e/4\). By watching these local charges being added to compressible puddles at \(\nu = 5/2\) and \(\nu = 5/7\), we find that the local charge at \(\nu = 5/2\) is indeed \(e/4\), indicating that objects of charge \(e\) are pairing to form the ground state of the system. This has implications for the future possibility of detecting non-Abelian braiding statistics in this state, and is described in detail in Chapter 2. By further monitoring how eagerly these \(e/4\) particles enter puddles as we increase the temperature, we can attempt to identify the presence of some excess entropy related to an unconventional degeneracy of their ground state. Such an entropy would be expected if the \(\nu = 5/2\) state exhibited non-Abelian braiding statistics. Progress on these experiments and prospects for building a quantum computer are presented in Chapter 3. Next, by operating the SET as a thermometer, we monitor heat flow along the compressible edge and through the bulk of IQH and FQH states. As an edge is heated and charge on that edge is swept downstream by the external magnetic field, we expect that charge to carry the injected energy in the same downstream direction. However, for certain FQH states, this is not the case. By heating an edge with a quantum point contact (QPC) and monitoring the heat transported upstream and downstream, we find that heat can be transported upstream when the edge contains structure related to \(\nu = 2/3\) FQH physics. Surprisingly, this can be present even when the bulk is in a conventional insulating (IQH) state. Additionally, we unexpectedly find that the \(\nu = 1\) bulk is capable of transporting heat, while the \(\nu = 2\) and \(\nu = 3\) bulk are not. These experiments are presented in Chapter 4. Finally, in Chapter 5, we describe preliminary work on a very different type of topological material, the quantum spin Hall (QSH) insulator. Here, the spin of electrons takes the place of the external magnetic field, creating edge states that propagate in both directions. Each of these edges behaves as an ideal one-dimensional mode, with predicted resistance \(h/e^2\). By creating well-defined regions where these modes can exist, we identify and characterize the conductance associated with topological edges.Physics
31
Campbell, Kathy, and Leslie Adebonojo. "Old Tool, New Function: Using LibGuides to Breathe New Life into the End-of-Semester Project." Digital Commons @ East Tennessee State University, 2014. https://dc.etsu.edu/etsu-works/868.
Abstract:
In 2008, Sherrod Library purchased Springshare’s LibGuides to create research guides for the library’s homepage. We also created LibGuides for individual classes when we taught library instruction sessions.
Several of our professors worked closely with librarians to create the LibGuides for their classes, and those guides are heavily used. Inspired by this success, we looked for other ways to use LibGuides to connect with our faculty, students, and community. Our most creative use of LibGuides happened in 2013 when several librarians approached carefully-chosen faculty with an invitation to participate in a pilot project. We chose among the professors who routinely requested library instruction sessions; seemed to be open to trying new ways to engage their students; and whose classes were small and not writing intensive. These three professors were invited to a meeting where we offered them the opportunity to replace their traditional written paper with a LibGuide assignment. We explained that students will still have to do quality research to produce a good LibGuide and suggested that there are a number of benefits from replacing a written paper with a LibGuide assignment, including:
• the replacement of an assignment that students don’t look forward to writing and professors don’t look forward to grading with a more engaging assignment;
• the ability to engage students by assigning a robust research project using a flexible tool that is easy to use;
• the creation of an electronic resource that students can easily include in an electronic portfolio.
This presentation describes the pilot project.
32
Nibart, Vincent. "Projet PIAFE : transport d'ions exotiques de basse énergie sur longue distance." Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10019.
Abstract:
Le projet piafe consiste a produire des noyaux riches en neutrons par fission au sein d'une cible d'uranium placee pres du cur du reacteur de l'institut laue langevin, puis de transporter les produits de fission sous forme monochargee et a basse energie (inferieure a 30 kev) sur une distance de 400 m jusqu'au complexe accelerateur sara de l'institut des sciences nucleaires de grenoble. Une solution originale de guidage ayant ete proposee, l'objectif de cette these est de prouver la faisabilite d'un tel transport. Pour ceci, on s'est attache a etudier les effets sur le faisceau des defauts d'alignement des elements optiques (et de leur support) et du champ magnetique terrestre afin de determiner un systeme periodique de correction de la trajectoire centrale du faisceau. Puis, la realisation d'une ligne experimentale de 18 m a permis de faire une etude detaillee de l'interaction du faisceau avec le gaz residuel. Cette interaction se caracterise par les pertes de particules par echange de charge et l'augmentation d'emittance par diffusion coulombienne. La validation des modeles theoriques permet une extrapolation des phenomenes sur une distance de 400 m. Il est ainsi possible de conclure sur la faisabilite d'un tel transport
33
Girardi, Caterina. "The Quest for a Global Language from Ogden's Project of Basic English." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/20863/.
Abstract:
After the decline of Latin, philosophers and linguists started developing the idea of creating a new universal language for international communication. Many languages were developed, some of them were designed to be exclusively written, some others were created a priori, meaning that they tried not to draw upon already existing languages, and others a posteriori. These languages were either combinations of already existing word roots and language systems (e.g. Esperanto) or simplifications of languages. One example of the latter is Basic English, created by linguists Charles K. Ogden and Armstrong Richards. With a core vocabulary of 850 words, it aimed at being the first step to learn Standard English, the language that was becoming de facto the global language.
The scope of this thesis is to give an overview of the quest for a universal language and analyse the political and linguistic implications of Charles K. Ogden’s Basic English.
34
Silva, Marcela do Carmo. "Aplicação de melhores práticas em gerenciamento de projetos por meio da identificação de cultura organizacional de Charles Handy." Universidade Federal Fluminense, 2015. https://app.uff.br/riuff/handle/1/856.
Abstract:
Submitted by Marcia Silva (marcia@latec.uff.br) on 2015-11-04T16:03:51Z
No. of bitstreams: 1
Dissert Marcela do Carmo Silva.pdf: 1260604 bytes, checksum: 5a6bafa07bff31e3f4c8208a54fb7aa8 (MD5)Made available in DSpace on 2015-11-04T16:03:51Z (GMT). No. of bitstreams: 1 Dissert Marcela do Carmo Silva.pdf: 1260604 bytes, checksum: 5a6bafa07bff31e3f4c8208a54fb7aa8 (MD5) Previous issue date: 2015-07-04
A presente pesquisa aborda os efeitos da aplicação das práticas em gerenciamento de projetos associadas às tipologias de cultura organizacional desenvolvidas por Charles Handy, realizada por meio de uma pesquisa com gerentes de projetos no Brasil. A metodologia utilizada quanto à natureza é básica de observação, com objetivo descritivo feito por meio de uma abordagem dos dados de forma qualitativa e uma pesquisa enviada por meio eletrônico. O estudo restringe-se à orientação da revisão da literatura, na academia, da escola pragmática estadunidense de cultura organizacional, e às práticas de gerenciamento de projetos mais utilizadas no Brasil pelos gerentes de projetos. Este estudo apresenta como resultado, em quase todas as culturas, uma tendência a concentração da utilização da prática em gerenciamento de projeto do PMBOK, pela padronização e certificação – demandadas pelos clientes dos projetos – ao que esta prática representa no mercado brasileiro, apesar de existir uma forte tendência e percepção de utilização das práticas em gerenciamento de projetos que mais se assemelham às tipologias observadas, e associadas no estudo desta pesquisa.
This research address the application of practices in managing projects related to organizational culture typologies developed by Charles Handy, conducted through a survey of project managers in Brazil. The methodology of the nature is basic observation, with descriptive goal done through an approach of data quanlitatively and a survey sent electronically. The study is restricted to the orientation of the literature review, the academia, the American pragmatic school of organizational culture, and the project management practices commonly used in Brazil by project managers. This study presents as a result, in almost all cultures, a tendency to concentration using the practice PMBOK project management, the standardization and certification - demanded by customers' projects - to this practice is the Brazilian market, although there are a strong trend and perceived use of project management practices that more closely resemble those observed types, and associated in this research study.
35
Deeb, Claire. "Optical properties of metal nanostructures as probed by photosenitive molecules." Troyes, 2010. http://www.theses.fr/2010TROY0011.
Abstract:
Les premières études dans ce domaine ont examiné l'interaction entre les structures métalliques et les molécules photosensibles et ont prouvé la possibilité de déclencher une photo-polymérisation à l'échelle nanométrique, par le biais des plasmons de surface de ces nanoparticules. Il a été également montré que la nanophotopolymérisation constitue une technique puissante pour l'imagerie du champ proche des nanostructures, évitant ainsi la perturbation de la physique de l'échantillon en apportant une sonde à proximité. Au cours de cette thèse, nous avons été beaucoup plus quantitatifs que nos prédécesseurs dans ce domaine. En irradiant les nanoparticules de métal à leur résonance, nous avons moulé le profil dipolaire du champ électromagnétique par un polymère photo-actif, avec une résolution inédite de 5 nm. Ensuite et par une caractérisation précise des moules polymères, des valeurs précises du facteur d'exaltation et de la profondeur du champ proche de colloïdes d'argent ont été extraites. En outre, nous avons montré notre capacité à avoir une signature spectrale de la résonance plasmon d'une nanoparticule métallique unique directement en champ proche. De plus, nous présentons des cartes de résolution nanométrique de la distribution spatiale de la densité surfacique de charge créée par la discontinuité du champ électrique au niveau d’une interface métal non-résonant/diélectrique. Enfin, ce travail a prouvé que l'approche de nanophotopolymérisation constitue, d’un point de vue fondamental, une opportunité pour étudier la nanophotochimieWhile past research has considered the interaction between metal nanoparticles and photo-sensitive molecules, especially the possibility of initiating nanoscale photopolymerization based on the localized surface plasmons of such particles, this PhD dissertation describes the in-depth characterization and optimization of such interactions that result in nanoscale photopolymerization. The present work demonstrates our ability to use the nanophotopolymerization process to quantitatively map with unprecedented resolution, better than 5 nm, both, the near-field of metallic nanoparticles associated with their localized surface plasmons, and the local electric fields resulting from surface charges density at metal/dielectric interfaces. We will emphasize that a precise characterization of the nanoscale molecular mold of the confined electromagnetic field of metal colloids enabled us to quantify the near-field depth and its enhancement factor. Moreover, a near-field spectrum corresponding to the response of localized surface plasmons of a single metal nanoparticle will be assessed. Additionally, we present nanoscale resolution maps of the spatial distribution of the surface charge density created by the electric field dis-continuity at a non-resonant metal/dielectric interface. Furthermore, this work will prove that the nanoscale photopolymerization approach does not only map the near-field of metal nanoparticles, yet it constitutes, from a more fundamental point of view, a unique opportunity to investigate nanophotochemistry
36
Yorgancioglu, Derya. "Re-constructing The Political And Educational Contexts Of The Metu Project." Phd thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612665/index.pdf.
Abstract:
This dissertation focuses on the roles played by the United Nations experts Charles Abrams
and G. Holmes Perkins in the foundation of METU Faculty of Architecture. It aims to
highlight the ideas and ideals that informed Abrams&rsquos and Perkins&rsquo
s METU projects, and to delineate an integrative and multifaceted picture of their political and educational contexts. This picture may serve as a basis for future researches on the institutional and educational histories of METU Faculty of Architecture. It may also help to better understand the contributions of other administrators and instructors -- including First Acting Dean Thomas B. A. Godfrey and Dean Abdullah Kuran -- who played important parts in the formation of the educational direction of the Faculty. Abrams, as a United Nations consultant, paved the way for the foundation of METU Faculty of Architecture by recommending a school of architecture and community planning in Ankara, for the education of professionals competent in responding to the problems caused by rapid industrial expansion and urbanization. Perkins contributed to the foundation process of METU Faculty of Architecture. As the head of the team of experts from the University of Pennsylvania School of Fine Arts, who were sent by the United Nations to Ankara in 1955, he advised the Government of Turkey on &ldquo
the creation of a Faculty of Architecture, a Faculty of City and Regional Planning&rdquo
and two research institutes, as a first step towards an institution of university rank, and with a view to promoting &ldquo
a newer, more practical and modern approach to architecture and urban planning&rdquo
in Turkey. In this dissertation, Abrams&rsquo
s and Perkins&rsquo
s METU projects constitute a starting point for exploring significant themes in the changing political and educational trajectories in America in the mid-twentieth century. The influence of different interpretations of the notions of democracy, individuality and society on technical assistance, urban development policies and architectural education is also investigated. Abrams&rsquo
s professional and academic position as a &ldquo
reflective practitioner&rdquo
is appraised in the light of John Dewey&rsquo
s concepts of democracy, democratic education and &ldquo
reflective thinking.&rdquo
The changing professional and societal roles of the architect and the changing demands upon architectural education in the 1950s framed the background of Perkins&rsquo
s educational approach. The reappraisal of liberal education as part of professional education of the architect, the rising significance of an interdisciplinary pedagogical approach, and the development of &ldquo
organized research&rdquo
in architecture were among the major themes shaping new orientations in the field of architectural education in America in those years. In the dissertation, the lasting validity of these themes for today is highlighted.
37
Zulueta, Stacy, Emily Clemans, and Grant Skrepnek. "The Top 25 Comorbidities Reported During Inpatient Stays for Pediatric Hematopoietic Stem Cell Transplant: Patient Demographics and Impact on Inpatient Mortality and Charges." The University of Arizona, 2011. http://hdl.handle.net/10150/614607.
Abstract:
Class of 2011 AbstractOBJECTIVES: The purpose of this study was to analyze the impact of patient and hospital characteristics as well as selected comorbidities on inpatient mortality and charges in pediatric HSCT. We have determined the top 25 comorbidities reported during all inpatient stays for HSCT as well as for those stays ending in mortality. METHODS: All data was extracted from the AHRQ KID databases for the years 1997, 2000, 2003, and 2006. Two regression analyses were performed to determine the contribution of various independent variables on mortality and charges. Subjects of this study included all cases of HSCT reported in the Healthcare Cost and Utilization Project (HCUP) KID as ICD-9 41.XX. RESULTS: Factors accounting for larger increases in cost included death during hospital stay, the development of disseminated intravascular coagulation (DIC), pneumonia, and length of stay (LOS). The largest decreases in charges were seen for patients coming from a small or “micropolitan” location, patients cared for in teaching hospitals, and in hospitals with large bedsizes. Variables associated with increased risk of mortality on linear regression included development of DIC, sepsis, or pneumonia. CONCLUSION: Further study relating to HSCT is necessary to determine the contribution of specific comorbidities to mortality and charges. Importantly, DIC is associated with both greater risk of mortality and greater charges. It would be prudent to recommend increased monitoring and early treatment for DIC based on these results.
38
Quinio, Bernard. "Pourquoi on n'évalue pas la valeur économique des projets de systèmes d'information ? : apport de la theorie de l'agence et utilisation de la sémiotique de Peirce." Nantes, 1997. http://www.theses.fr/1997NANT4020.
Abstract:
L'évaluation économique est un des problèmes actuels majeurs du management des systèmes d'information (SI). Nous montrons que la faible pratique actuelle de l'évaluation des projets de SI provient moins d'un manque de techniques que d'une mauvaise compréhension de l'acte d'évaluation. En particulier, les démarches proposées dans la littérature présupposent que l'acte d'évaluation est neutre pour les acteurs des projets de SI. En étudiant les attentes des protagonistes du projet, par la théorie positive de l'agence, nous proposons une explication à la non-réalisation de l'évaluation. En étudiant le lien entre le résultat de l'évaluation et le pilotage du projet, via le modèle d'interprétation de Peirce, nous proposons une explication à la non-utilisation de l'évaluationThe economic evaluation is one of the major issues of the management of the information system (IS). We demonstrate that the weak current method concerning the evaluation of the IS projects comes froma lack of comprehension of the evaluation process rather than a lack of technical tools. Indeed, the methods found in the litterature consider that the evaluation process does not take into account the actors involved in the project. On the contrary, we focus on the expectations of the protagonists of the project, through the positive agency theory, in order to explain the no-realisation of the evaluation. Studying the link between the result of the evaluation and the management of the project, using the interpretation model of peirce, we explain why this evaluation is not used
39
Marín, Hernández Cristina. "Molecular probes and ruthenium (II) and osmium(II) complexes for the chromofluorogenic sensing of charged species and carbon monoxide." Doctoral thesis, Universitat Politècnica de València, 2018. http://hdl.handle.net/10251/95407.
Abstract:
La presente tesis doctoral titulada "Sondas moleculares y complejos de rutenio (II) y osmio (II) para la detección cromo-fluorogénica de especies cargadas y monóxido de carbono" se centra en el desarrollo de sensores químicos moleculares. El trabajo realizado se puede dividir en dos partes: (i) síntesis y caracterización de sondas moleculares multifuncionales para la detección óptica de aniones y cationes metálicos y, (ii) preparación de complejos de rutenio (II) y osmio (II) para la detección cromo-fluorogénica de monóxido de carbono.
La primera familia de sondas moleculares, a la cual se hace referencia en el capítulo 2, se basa en el uso de imidazoantraquinonas como subunidad indicadora. Empleando este fragmento molecular se prepararon y caracterizaron cuatro sondas (2a-2d). De todos los aniones que se ensayaron, sólo el fluoruro es capaz de inducir la aparición de una banda de absorción (lo cual se refleja en diferentes cambios de color) y bandas de emisión desplazadas hacia el rojo. Estos cambios se atribuyen a la desprotonación del grupo N-H del anillo de imidazol inducida por el fluoruro. También los cationes Fe3+, Al3+ y Cr3+ son capaces de producir desplazamientos moderados hacia el azul de las bandas de absorción de los cuatro receptores, así como una desactivación marcada de la emisión a causa de su coordinación (con los átomos de oxígeno y nitrógeno del cromóforo imidazoantraquinona).
El segundo capítulo también está dedicado al estudio del comportamiento de coordinación frente a aniones y cationes de una segunda familia de sondas (3a-3d) basadas en derivados de imidazoquinolina. Nuevamente el anión fluoruro promueve la desprotonación de estos compuestos, lo cual se refleja en la aparición de bandas de absorción y de emisión desplazadas hacia el rojo. En cuanto a la respuesta óptica en presencia de cationes metálicos es muy poco selectiva, observándose cambios en las bandas UV-visible y una desactivación de las bandas de emisión en presencia de Hg2+, Cu2+, Co2+, Fe3+, Fe2+, Zn2+, Pb2+, Cd2+, Cr3+ y Al3+.
A lo largo del capítulo 3 se presenta la síntesis, caracterización y comportamiento cromo-fluorogénico frente al monóxido de carbono de dos conjuntos de complejos de rutenio (II) y osmio (II) que tienen en su esfera de coordinación los fluróforos 2,1,3-benzotiadiazol (BTD) y 5-(3-tienil)-2,1,3-benzotiadiazol (TBTD). En la primera parte de este capítulo se prepararon ocho compuestos con el ligando BTD (1-8). Al burburjearles CO, las disoluciones de cloroformo de dichos complejos mostraron notables cambios de color. Además, su emisión se vio incrementada debido a la coordinación de los complejos con el CO y el desplazamiento del fluoróforo BTD. Por otro lado, la adsorción de los complejos en sílice dio lugar a sólidos que presentaron importantes cambios de color permitiendo la detección de CO en fase gas a simple vista y con alta selectividad y sensitividad.
El segundo conjunto de complejos de rutenio (II) y osmio (II) contiene el fluróforo TBTD (3-7). Éstos también son capaces de detectar CO cuando se encuentran disueltos en cloroformo y adsorbidos en sílice a través de cambios de color y fluorescencia. Por otra parte, se prepararon dos nuevos complejos (8 y 9) funcionalizados con una cadena de polietilenglicol. Ambos complejos son solubles en agua y permiten la detección de CO en este disolvente altamente competitivo. Además, los compuestos 8 y 9 no son tóxicos y se emplearon con éxito en la detección de CO en células HeLa.The present PhD thesis entitled "Molecular probes and ruthenium (II) and osmium (II) complexes for the chromo-fluorogenic sensing of charged species and carbon monoxide" is focused on the development of molecular chemosensors. More in detail, the work carried out is clearly divided into two independent parts: (i) the synthesis and characterization of multifunctional molecular probes for the optical detection of anions and metal cations and, (ii) the preparation of ruthenium (II) and osmium (II) complexes for the chromo-fluorogenic sensing of carbon monoxide. The first family of molecular probes, reported in chapter 2, is based on the use of imidazoanthraquinone as signaling subunit. Using this molecular fragment four probes (2a-2d) are prepared and characterized. Of all the anions tested, only fluoride is able to induce the appearance of red-shifted absorption (reflected in marked color changes) and emission bands. These changes are ascribed to a fluoride-induced deprotonation of the N-H moiety of the imidazole ring. Also Fe3+, Al3+ and Cr3+ were able to induce moderate blue-shifts of the absorption bands of the four receptors upon coordination (with the oxygen and nitrogen atoms of the imidazoanthraquinone chromophore) and marked emission quenching. The second chapter is also devoted to study the coordination behavior toward anions and cations of a second family of probes (3a-3d) containing imidazoquinoline derivatives. Again, fluoride anion promoted the deprotonation on the probes that are reflected in the apperacence of red-shifted absorption and emission bands. The optical response in the presence of metal cations is quite unselective and UV-visible shifts and emission quenchings are observed in the presence of Hg2+, Cu2+, Co2+, Fe3+, Fe2+, Zn2+, Pb2+, Cd2+, Cr3+ and Al3+. Chapter 3 presents the synthesis, characterization and chromo-fluorogenic behavior toward of carbon monoxide of two set of ruthenium (II) and osmium (II) complexes bearing 2,1,3-benzothiadiazole (BTD) and 5-(3-thienyl)-2,1,3-benzothiadiazole (TBTD) fluorophores. Eight complexes functionalized with BTD ligand (1-8) are prepared in the first part of this chapter. Chloroform solutions of the complexes underwent remarkable color changes when CO is bubbled. Also, significative emission enhancements are obserbed due to coordination of CO and displacement of BTD fluorophore. Besides, the adsorption of the complexes on silica yielded solids that presented remarkable color changes that allowed a naked eye detection of CO in gas phase. The second set of ruthenium (II) and osmium (II) complexes contains TBTD fluorophore (3-7). Also these complexes are able to detect CO in chloroform solution and in gas phase when adsorbed on silica through color and fluorescence changes. Moreover, two new complexes (8 and 9) containing a poly(ethylene) glycol chain are prepared. Both complexes are water soluble and allowed CO detection in this highly competitive solvent. Besides, 8 and 9 are non-toxic and are successfully used for CO detection in HeLa cells.
La present tesi doctoral titulada "Sondas moleculars i complexos de ruteni (II) i osmi (II) per a la detecció cromo-fluorogènica d'espècies carregades i monòxid de carboni" es centra en el desenvolupament de sensors químics moleculars. El treball realizat es pot dividir en dues parts: (i) síntesi i caracterització de sondes moleculars multifuncionals per a la detecció òptica d'anions i cations metàli·lics i, (ii) preparació de complexos de ruteni (II) i osmi (II) per a la detecció cromo-fluorogènica de monòxid de carboni. La primera família de sondes moleculars, a la qual es fa referència en el capítol 2, es basa en l'ús d'imidazoantraquinones com a subunitat indicadora. Emprant aquest fragment molecular es van preparar i caracteritzar quatre sondes (2a-2d). De tots els anions que es van assajar, només el fluorur és capaç d'induir l'aparició d'una banda d'absorció (la qual cosa es reflecteix en diferents canvis de color) i bandes d'emissió desplaçades cap al roig. Aquestos canvis s'atribuïxen a la desprotonació del grup NH de l'anell d'imidazol induïda pel fluorur. També els cations Fe3+, Al3+ i Cr3+ són capaços de produir desplaçaments moderats cap al blau de les bandes d'adsorció dels quatre receptors, així com una desactivació marcada de l'emissió a causa de la seua coordinació (amb els àtoms d'oxigen i nitrogen del cromòfor imidazoantraquinona). El segon capítol també està dedicat a l'estudi del comportament de coordinació en presència d'anions i cations d'una segona família de sondes (3a-3d) basades en derivats d'imidazoquinolina. Novament l'anió fluorur promou la desprotonació d'aquestos compostos, la qual cosa es reflecteix en l'aparició de bandes d'absorció i d'emissió desplaçades cap al roig. Quant a la resposta òptica en presència de cations metàl·lics és molt poc selectiva, observant-se canvis en les bandes UV-visible i una desactivació de les bandes d'emissió en presència de Hg2+, Cu2+, Co2+, Fe3+, Fe2+, Zn2+, Pb2+, Cd2+, Cr3+ i Al3+. Al capítol 3 es presenta la síntesi, caracterització i comportament cromo-fluorogènic en presència de monòxid de carboni de dos conjunts de complexos de ruteni (II) i osmi (II) que tenen a la seua esfera de coordinació els fluoròfors 2,1,3-benzotiadiazol (BTD) i 5-(3-tienil)-1,2,3-benzotiadiazol (TBTD). A la primera part d'aquest capítol es van preparar huit compostos amb el lligant BTD (1-8). Al bambollejar-les CO, les dissolucions de cloroform d'aquestos complexos van mostrar notables canvis de color. A més, la seua emissió es va veure incrementada a causa de la coordinació dels complexos amb el CO i el desplaçament del fluoròfor BTD. D'altra banda, l'adsorció dels complexos en sílice va donar lloc a sòlids que van presentar importants canvis de color premetent la detecció de CO en fase gas a simple vista i amb alta selectivitat i sensitivitat. El segon conjunt de complexos de ruteni (II) i osmi (II) conté el fluoròfor TBTD (3-7). Aquestos també són capaços de detectar CO quan es troben dissolts en cloroform i adsorbits en sílice a través de canvis de color i fluorescència. D'altra banda, es van preparar dos nous complexos (8 i 9) funcionalitzats amb una cadena de polietilenglicol. Ambdós complexos són solubles en aigua i permeten la detecció de CO en aquest dissolvent altament competitiu. A més, els compostos 8 i 9 no són tòxics i es van emprar amb èxit en la detecció de CO en cèl·lules HeLa.
Marín Hernández, C. (2017). Molecular probes and ruthenium (II) and osmium(II) complexes for the chromofluorogenic sensing of charged species and carbon monoxide [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/95407
TESIS
40
Martin, Caroline. "La gestion de la charge mentale des contrôleurs aériens en-route : apports de l'eye-tracking dans le cadre du projet européen SESAR." Phd thesis, Université Toulouse le Mirail - Toulouse II, 2013. http://tel.archives-ouvertes.fr/tel-00921212.
Abstract:
Les contrôleurs du trafic aérien ou " aiguilleurs du ciel ", dont l'activité consiste à assurer la sécurité de l'écoulement du trafic aérien, vont bientôt être confrontés à une évolution sans précédent de leur activité de travail. Pour pallier à une évolution de contexte, associée principalement à une augmentation significative du niveau de trafic aérien, la construction d'un nouvel environnement de contrôle induisant l'introduction de nouvelles technologies et de l'automatisation partielle de la tâche de contrôle est visée. Ces perspectives, qui ont pour objectif de diminuer les sollicitations des contrôleurs aériens afin d'augmenter le seuil capacitaire de gestion du trafic aérien, suscitent l'interrogation. Notamment, comment assurer la validation de ces évolutions en vue des objectifs visés ? Ce doctorat porte sur l'étude de la charge mentale de contrôleurs aériens dans différents contextes, afin d'évaluer les effets engendrés par de telles modifications apportées à leur environnement de travail quotidien. L'évaluation proposée repose sur une approche multidimensionnelle centrée sur l'analyse de paramètres oculaires enregistrés grâce à une technique d'eye-tracking dans des situations de contrôle écologiquement valides, en référence à la tâche de contrôle du trafic aérien. La première étude a tout d'abord permis de caractériser la gestion de la charge mentale effectuée par les contrôleurs aériens au cours de leur activité dans une situation nominale (reflétant la situation de contrôle du trafic aérien actuelle). La deuxième étude porte sur les effets générés par l'introduction de nouveaux systèmes informatisés d'aide à la décision induisant une automatisation partielle de la tâche de contrôle. Enfin, la dernière étude souligne l'effet du niveau de formation sur les modes de gestion des ressources cognitives employés par les contrôleurs aériens.
41
Santos, Enciso Emily Angie, and Paiva Angie Del Rosario Zelayarán. "Implementación del proceso de Planeamiento y Control de la producción en una empresa PYME del sector textil bajo los lineamientos del PMI." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/626314.
Abstract:
El presente proyecto fue aplicado a una PYME del sector textil, enfocada a la elaboración de pantalones para caballeros. La empresa decidió implementar el proceso de planeamiento y control de la producción debido a los incrementos en costos por penalidades registradas por la empresa y a la falta de planificación. La implementación se realizó a través de los lineamientos del Project Management Institute (PMI), basado en el cumplimiento de los puntos descritos en el acta de la constitución. El objetivo de este proyecto es que la organización pueda satisfacer la demanda, considerando la capacidad de la empresa, el requerimiento de materiales y la planificación de la producción.
En el presente trabajo, se desarrollan cinco capítulos, los cuales están definidos de la siguiente forma: en el capítulo uno, se describirá la metodología implementada en el desarrollo del proyecto y los lineamientos que permiten el desarrollo de este. En el capítulo dos, se desarrollará el contenido del acta de constitución del proyecto, que nos permite determinar el alcance, los objetivos, los interesados, los riesgos, etc.; así como también el diagnóstico de la empresa en la etapa previa a la implementación. El capítulo tres, desarrollará la planificación del proyecto. En el capítulo cuatro, se desarrollará la implementación del modelo de planificación y control de la producción, además, se darán a conocer los resultados de la implementación. Finalmente, en el capítulo cinco, se detallarán las conclusiones y recomendaciones.The present project was applied to a SME business in the textile sector, focused on the elaboration of men's trousers. The company decided to implement the production planning and control process due to the increase in costs due to penalties registered by the company and the lack of planning that obliged operators to work overtime to cover production stops. The implementation was done through the guidelines of the Project Management Institute (PMI), based on compliance with the points described in the Project Charter. The objective of developing these guidelines that the organization can meet the demand, considering the capacity of the company, the requirement of materials and planning of production. Five chapters are developed, which are defined as follows: Chapter one will describe the methodology implemented in the development of the project. In chapter two, the content of the act of constitution of the project is developed, which allows us to determine the scope, objectives, stakeholders, risks, etc., as well as the diagnosis of the company in the pre-implementation stage. Chapter three will develop the project planning, which will describe each of the nine steps that were considered for the development of the project. In chapter four, the implementation of the production planning and control model was developed, and the results of the implementation were made known. Finally, in chapter five, the conclusions and recommendations will be detailed.
Trabajo de suficiencia profesional
42
Rivett, Jasmine Pamela Helen. "Charge carrier dynamics of lead halide perovskites probed with ultrafast spectroscopy." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/275095.
Abstract:
In this thesis, we investigate the nature of charge carrier generation, relaxation and recombination in a range of lead halide perovskites. We focus on understanding whether the photophysical behaviour of these perovskite materials is like that of highly-ordered inorganic crystalline semiconductors (exhibiting ballistic charge transport) or disordered molecular semiconductors (exhibiting strong electron-phonon coupling and highly localised excited states) and how we can tune these photophysical properties with inorganic and organic additives. We find that the fundamental photophysical properties of lead halide perovskites, such as charge carrier relaxation and recombination, arise from the lead halide lattice rather than the choice of A-site cation. We show that while the choice of A-site cation does not affect these photophysical properties directly, it can have a significant impact on the structure of the lead halide lattice and therefore affect these photophysical properties indirectly. We demonstrate that lead halide perovskites fabricated from particular inorganic and organic A-site cation combinations exhibit low parasitic trap densities and enhanced carrier interactions. Furthering our understanding of how the photophysical properties of these materials can be controlled through chemical composition is extremely important for the future design of highly efficient solar cells and light emitting diodes.
43
Fougerolle, Patricia de. "Une dynastie d'architectes, les Boileau : oeuvres, travaux et projets de Louis-Auguste Boileau (1812-1896), Louis-Charles Boileau (1837-1914) & Louis-Hippolyte Boileau (1878-1948)." Paris 4, 1994. http://www.theses.fr/1993PA040264.
Abstract:
Le fondateur de la famille, Louis-Auguste Boileau, n'est qu'un simple menuisier que la curiosité et la ténacité, animées par une vision progressiste de l'histoire, amènent à devenir architecte. Sa formation "sur le tas", sa culture archéologique, son imagination, ses contacts avec le renouveau catholique, font de lui un architecte visionnaire et inventif. Il consacre la plus grande partie de sa vie à créer une architecture religieuse originale inspirée de son projet de "cathédrale synthétique" (1850). En 1854-1855, il introduit l'utilisation du fer dans un édifice religieux, à Saint-Eugene (à Paris). De l'utopie de Louis-Auguste naitra le réalisme de son fils. Moins radical, Louis-Charles se rapproche davantage, quant à l'utilisation du fer, de la théorie selon laquelle "le fer est un moyen et ne sera jamais un principe". Il hérite d'une plume facile et écrit dans les revues d'architecture. Ses débuts sont marqués par de nombreuses restaurations et constructions, qui dénotent un gout pour la renaissance. Il réalise de nombreuses constructions pour une clientèle privée qui compte d'éminentes personnalités. Il ne néglige pourtant pas les édifices publics : mairies, écoles, monuments commémoratifs. Sa principale réalisation, le magasin de Bon-Marché (à Paris) témoigne de ses talents d'ingénieur. Louis-Hippolyte, le petit-fils, est le plus discret. Ni théoricien, ni doctrinaire, il n'écrit pas, et ses réalisations suffisent à le définir. Brillant élève aux beaux-arts, il entretient le savoir qui lui a été transmisHead of the Boileau dynasty, Louis-Auguste Boileau was a carpenter whose intellectual curiosity and strong receptiveness to progress in history led to become an architect. He learnt his art on the job and become a visionary and inventive professional, well-served by vast archaeological knowledge, an imaginative mind and a empathy for catholic revival ideas. Most of his life was dedicated to the working-out of a new style in religious architecture, well-illustrated by his scheme for a "cathédrale synthétique" (1850). He used iron girders for the building of Saint-Eugene Church in Paris (1854-1855) and in that specific field was the first architect to do so. Son of an utopian father, Louis-Charles was to show great pragmatism and less radicalism in his views. In his approach to the use of iron in architecture, he tended to agree with the theory that says "it can be a mean but will never be a ; main element". As writing came easily to him, he became a contributor to various professional publications. His numerous early works - counting new constructions as well as rehabilitation of old building - indicate the influence of the renaissance. Even though he achieved a great number of his creations for private individuals, among which were key figures of time, he did not neglect the construction of public buildings, such as town halls, schools, memorials, etc. His main achievement was the Bon-Marché (Paris). […]
44
Perret, Julie. "Du projet républicain de rénovation des arts en France entre 1870 et 1914 à sa réalisation en musique : l’exemple des chants pour l’école." Thesis, Paris 4, 2014. http://www.theses.fr/2014PA040102.
Abstract:
Dès 1870, dans un contexte politique et social français marqué par un patriotisme, voire un nationalisme antigermanique et revanchard, l’État ressent le besoin de redéfinir la nation et de diffuser jusque dans les arts un nouvel esprit français marqué par les valeurs issues de la Révolution. La chute de l’Empire et l’arrivée des républicains sur la scène politique marquent un tournant idéologique durant lequel un projet de rénovation des arts se dessine. Il a pour objectif de contribuer à la régénération de la société et à la naissance de citoyens nouveaux. En étudiant à la fois le projet théorique initial, ses répercussions sur les arts et plus spécifiquement sa réalisation en musique, nous souhaitons démontrer dans cette thèse une certaine perméabilité entre « les champs politique et administratif » et « le champ artistique ». Une première partie, consacrée à l’étude du contexte officiel du tournant du siècle ainsi qu’à celui de la presse artistique, examine le projet de rénovation des arts tel qu’il a été pensé par l’État. L'une de ses principales caractéristiques réside dans sa dimension sociale et politique. Il est envisagé comme un moyen d’action humaniste ayant pour objectif d'éduquer les hommes et les femmes dans leur quotidien. L'art doit devenir source de lien social, de fraternité et de communion, afin de ranimer les valeurs républicaines. Dans une seconde partie, nous étudions le rôle singulier de la musique au sein de ce projet. Un mouvement de propagande musicale est initié et un service public de la musique est mis en place : il s’agit de démocratiser la musique, en rendant son enseignement accessible à tous, et en l'intégrant au quotidien à travers des événements fédérateurs à la dimension patriotique forte. C’est grâce à l’école, rendue obligatoire, que le projet va largement se réaliser. L’analyse d'exemples significatifs de chants scolaires nous permettra de vérifier comment les valeurs défendues par le projet républicain se diffusent jusque dans le langage musicalSince 1870, in a political and social context marked by patriotism, or even anti-Germanic nationalism, the French State felt the need to redefine the Nation and disseminate into the arts a new “esprit français” marked by the values inherited from the Revolution. The fall of the Empire and the advent of the Republicans on the political scene initiated an ideological turning point during which a project of arts renovation emerged. Its aim was to contribute to the regeneration of society and to the birth of a new citizen. By studying both the initial theoretical project, its impact on the arts and more specifically its implementation in music, this dissertation will demonstrate a certain permeability between political and administrative fields and the arts.The first part, devoted to the study of the official context of the turn of the century as well as that of the art press, will examine the project of arts renovation designed by the state. One of its main features lying in its social and political dimension, it was envisaged as a humanist mean of action to educate men and women in their daily lives. The arts would become source of social connection, fraternity and communion, whose main objective was to revive the Republican values.During the second part, we shall study the singular role of music within the project. A musical propaganda movement was indeed initiated and a “service public” of music established in order to democratize music, make its education accessible to all, and integrate it in strong unifying patriotic events. Through the institution of compulsory school throughout France, the project will also largely be realized. The analysis of significant examples of school songs will thus demonstrate how the values upheld by the Republican project also diffused into the musical language
45
Khamseh, Ava. "Lattice phenomenology of heavy quarks using dynamical fermions." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/28855.
Abstract:
The Standard Model of particle physics is believed to be only the low energy limit of a more fundamental theory. In order to determine its range of validity, a major part of theoretical and experimental efforts in physics is dedicated to precision tests of the Standard Model. Lattice QCD is a non-perturbative, first-principles approach to Quantum Field Theory. It plays an important role in flavor physics by providing calculations of non-perturbative strong interaction contributions to weak processes involving quarks. Measurements of hadronic quantities can be used to constrain the Standard Model as well as theories Beyond the Standard Model. The first part of this thesis contains theoretical developments regarding non-perturbative renormalization. A new renormalization scheme, RI/mSMOM, for fermion bilinear operators in QCD at non-vanishing quark mass is presented. In order to investigate the properties of the mSMOM scheme, an explicit one-loop computation in perturbation theory using dimensional regularization is performed. Numerically, vertex functions are generated on the lattice, with an appropriate projector, based on the RI/SMOM scheme and the renormalization factors are extracted. Quantities measured include renormalization of the axial current ZA, required to renormalize the axial current entering the computation of the decay constant and the renormalization of the bag parameter. The second part of this report focuses on flavor physics phenomenology on the lattice. It presents results of the first run of the RBC/UKQCD charm project with (2+1)-flavor Domain Wall fermions. Observables and matrix elements are measured on lattices with Iwasaki gauge action. There are two ensembles at the physical point with inverse lattice spacings 1.73 and 2.36 GeV and a third finer ensemble at 2.76 GeV as well as four other auxiliary ensembles with smaller volumes and heavier pion masses which are used to perform the continuum extrapolations. The quantities measured in the region of the charm quark mass are meson masses, decay constants, the matrix element of the OV V +AA operator, the neutral D-meson mixing parameter B and the SU(3) breaking ratio ξ.
46
Pasupathy, Subha-Sree. "Édition scientifique numérique (XML, TEI) de projets de l'abbé de Saint-Pierre (ensemble de politique culturelle)." Caen, 2012. http://www.theses.fr/2012CAEN1640.
Abstract:
Aujourd'hui, l'œuvre de l'abbé Castel de Saint-Pierre (1658-1743), est redécouverte et réévaluée pour son importance dans la constitution de la pensée politique et philosophique européenne des Lumières. Si de son vivant, la plupart de ses œuvres ont été publiées, la richesse de ses annotations et de ses nombreuses corrections dans ses manuscrits, ainsi que leur confrontation avec les imprimés invitent à une édition critique de ses œuvres mise d'autant plus en valeur par les apports technologiques. Aussi, ce projet de thèse vise-t-il à établir une édition scientifique numérique des écrits de cet auteur par la mise en ligne de l'ensemble de ses projets de politique culturelle. Le travail s'effectue selon les normes du format XML (Extensible Markup Language), qui suppose la structuration et le balisage du texte suivant les recommandations de la TEI (Text Encoding Initiative)The Abbé de Saint-Pierre's (1658-1743) work is today re-examined for its importance in the constitution of the european political and philosophical views of the Enlightenment. If most of his works were published during his lifetime, the various corrections and notes present in his manuscripts and their comparative study with the printed texts call for a critical edition, enhanced by the new technologies. Therefore, this thesis focuses on the critical and electronic edition of his projects on the cultural policy according to the XML (Extensible Markup Language) format rules with the TEI's structuralization and tagging guidelines
47
Marchiori, Victor Atilio. "Projeto e implementação de sistema eletrônico para atenuação de não linearidades dos atuadores piezoelétricos do interferômetro de Fabry-Pérot do espectrômetro astronômico BTFI." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/3/3139/tde-13082015-113019/.
Abstract:
Este trabalho apresenta o projeto de pesquisa desenvolvido para a obtenção do título de Mestre em Engenharia Elétrica, na área de concentração de engenharia de sistemas, da Escola Politécnica da Universidade de São Paulo. O principal objetivo deste trabalho foi o desenvolvimento de um sistema de acionamento (driver) para os atuadores piezoelétricos do interferômetro de Fabry-Pérot do espectrômetro BTFI (Brazilian Tunable Filter Imager), um instrumento visitante do telescópio SOAR (Southern Astrophysical Research Telescope), no Chile. O Fabry-Pérot é um instrumento óptico composto de duas superfícies paralelas altamente reflexivas (espelhos), cuja distância é controlada por um sistema de nanoposicionamento composto de três atuadores piezoelétricos (piezos) do tipo APA® (Amplified Piezoelectric Actuators) e um sistema de medida capacitivo. O principal requisito técnico de desempenho do sistema de nanoposicionamento do Fabry-Pérot é tal que o ruído de posicionamento dos espelhos deve ser limitado a 3 . No entanto, os fenômenos não lineares de histerese e escorregamento (creep) dos piezos limitam a precisão de posicionamento do sistema de controle, razão pela qual foi desenvolvido um sistema de acionamento por carga e tensão para os piezos, com o intuito de atenuar suas não linearidades e, consequentemente, melhorar o desempenho do sistema de controle em malha fechada, em termos de ruído de posicionamento. A primeira etapa deste trabalho consistiu da caracterização do modelo e da instrumentação do sistema de nanoposicionamento do Fabry-Pérot, composto de sensores capacitivos, conversores de sinal, atuadores piezoelétricos e sistema de aquisição de dados. Após a caracterização dos componentes do sistema, sua especificação técnica de desempenho de 3 foi traduzida em requisitos de engenharia para o projeto do sistema eletrônico de acionamento dos piezos por carga e tensão, notadamente em termos de ruído, tempo de resposta, banda de resposta em frequência, ganho, corrente e tensão elétricas e dissipação de potência. Uma vez concluído o projeto do driver, um protótipo foi implementado e testado com o sistema real, a fim de se verificar experimentalmente a atenuação dos efeitos não lineares. Finalmente, foram realizados alguns experimentos com o driver e o sistema de nanoposicionamento em malha fechada, controlado por um compensador PI, a fim de se verificar a influência da atenuação das não linearidades dos piezos nesta configuração. Após a análise dos resultados experimentais obtidos, verificou-se que o ruído de posicionamento do sistema, em malha fechada, é significativamente menor quando os fenômenos não linearidades dos piezos são atenuados.This work represents the research project to obtain the degree of Master of Sciences in Electrical Engineering, specializing in Systems Engineering, at the Escola Politécnica da Universidade de São Paulo, in São Paulo, Brazil. The main objective of this project was to design an electronic power driver for the piezoelectric actuators of the Fabry-Pérot interferometer of the BTFI spectrometer, a visitor instrument of the SOAR telescope, in Chile. Fabry-Pérot is an optical instrument composed by two high reflexive parallel surfaces (mirrors), which distance is controlled by a nanopositioning system composed by three piezoelectric actuators (piezos) of the class APA® (Amplified Piezoelectric Actuators) and a capacitive measurement system. The main performance specification of the Fabry-Pérots nanopositioning system is such that the positioning noise must be limited to 3 . However, the nonlinear behaviors (hysteresis and creep) of the piezos limit the positioning precision of the control system, for which reason a charge and voltage actuation system was developed for the piezos, in order to mitigate its nonlinearities and, consequently, improve the performance of the control system in closed loop, in terms of positioning noise. The first step in this work consisted on the characterization of the Fabry-Pérot nanopositioning systems model and instrumentation, which are composed by capacitive sensors, signal converters, piezoelectric actuators and a data acquisition board. After the characterization of the components of the nanopositioning system, the 3 specification was interpreted to low level engineering requirements for the design of the charge and voltage driver, especially in terms of noise, response time, frequency bandwidth, gain, electrical current, voltage and power dissipation. Once concluded the design of the driver, a prototype was implemented and tested in the real system, in order to verify the attenuation of the nonlinear effects. Finally, some experiments with the driver and the nanopositioning system were performed in closed loop, controlled by a PI compensator, in order to verify the influence of the attenuation of the nonlinearities of the piezos in such configuration. The analysis of the obtained experiment results showed that the nanopositioning systems noise, in closed loop, is significantly reduced when the nonlinear effects of the pizeos are attenuated.
48
Brown-Xu, Samantha E. "Photophysical and Photosensitizing Properties of Dimetal Quadruply Bonded Paddlewheel Complexes Probed Through Ultrafast Spectroscopy." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1405491729.
49
Teixeira, Lucas. "PROJETO DE CIRCUITOS INTEGRADOS PARA BALANÇO DE CARGA E REDUÇÃO DA TENSÃO RESIDUAL EM ESTIMULAÇÃO NEURAL." Universidade Federal de Santa Maria, 2015. http://repositorio.ufsm.br/handle/1/5453.
Abstract:
The Electrical Functional Stimulation (EFS) allows the direct connection between man
and machine through electrical signals. The last years growth in EFS is possible because of the
new technological resources that make it feasible. Restoring someone s vision or hearing, even
parcially, is one among several contribution that EFS may contribute to human s well-being.
However the interface between the electrical circuits and the tissue is sensitive to several factors.
Among several effects that may damage the tissue and electrode in EFS we can find those
caused by the electrical stimuli, this may harm the application. This work presents contributions
regarding electrical circuits topologies for safety stimuli in EFS. It is essential to ensure proper
electrical charge balance and a small residual voltage on the tissue-electrode interface. For
each of these problems one proposal is presented, both share circuit blocks. The blocks to
control intensity and polarity of stimuli are designed to avoid the integration of high voltage
devices. The current mode stimuli is generated using an ultra-low power charge redistribution
Digital to Analog Converter (DAC) for stimulus intensity definition. This DAC architecture
even simplifies the feedback mechanism that is obtained directly from measurement circuit.
The technic that uses only low voltage devices to measure electrodes current is presented, it
is suitable to implement the charge balance control in an integrated circuit. This measurement
technique is insensitive to capacitors mismatch and to the current measurement absolute ratio.
That control is possible through the a simplified feedback path that joins the controller and
the measurement in an efficient way acting directly in the DAC. The proposed residual voltage
control technique requires only passive elements to be added to the circuit, that suggest a lower
power consumption. The charge redistribution DAC keeps residual voltage information stored,
in order to compensate it in next stimulation cycles. The stimulation cycle polarity is explored,
alternated cathodic and anodic-first cycles are used in order to reduce the charge imbalance and
residual voltage. Both proposals are presented and validated with electrical simulation, known
metrics are used and the performance is equivalent to state-of-art in literature.A estimulação elétrica funcional(EFS) faz a interface direta entre o homem e a máquina, por meio de sinais elétricos. A viabilidade advinda de novas tecnologias justifica o seu crescimento nos últimos anos. Restaurar a visão ou a audição, mesmo que parcialmente, são duas das inúmeras contribuições que pode proporcionar para o bem estar do ser humano. No entanto, a interface entre o circuito elétrico e o tecido é sensível a diversos fatores. Entre os diversos fenômenos que podem ocasionar danos ao tecido e ao eletrodo na interface de EFS estão os causados pelo estímulo elétrico usado, e isso pode inviabilizar a aplicação. Neste sentido, este trabalho apresenta contribuições relacionadas à topologia de circuitos para segurança na geração do estímulo em EFS. O correto balanceamento de carga elétrica e a diminuição da tensão residual, na interface entre o tecido e o eletrodo, são indispensáveis. Uma técnica é propostas para a solução de cada um desses problemas, ambas compartilham blocos de circuito comuns. O controle da intensidade e da polaridade de estimulação são concebidos para evitar a necessidade de dispositivos de alta tensão. A geração de estímulos em modo corrente utiliza um Conversor Digital para Analógico (DAC) do tipo redistribuição de carga de ultra baixo consumo de energia para o controle da intensidade dos pulsos. Esse conversor ainda simplifica a realimentação, que é derivada diretamente do circuito de medição. Como solução para viabilizar a implementação em circuito integrado de controle do desbalanço de carga, uma técnica de medição usando somente dispositivos de baixa tensão é apresentada. Essa técnica é tolerante ao descasamento entre capacitores utilizados e à variação no ganho do circuito de medição de corrente. O controle é possível por meio de um laço de realimentação simplificado, que une medição e controle de forma eficiente e atua direto no DAC. A técnica proposta para controle da tensão residual nos eletrodos requer somente adição de elementos passivos ao circuito, sugerindo a redução do consumo de energia. O DAC tipo redistribuição de carga é usado para armazenar a informação da tensão residual e a compensação no ciclo seguinte. A fase dos ciclos de estimulaçãotambém é explorada, ciclos com fases alternadas são usados visando redução no desbalanço de carga e tensão residual. As duas propostas são apresentadas e validadas por meio da simulação elétrica, métricas conhecidas são utilizadas e o desempenho observado é equivalente ao estado da arte.
50
Mutz, Niklas. "Energy and Charge Transfer at Hybrid Interfaces Probed by Optical Spectroscopy." Doctoral thesis, Humboldt-Universität zu Berlin, 2021. http://dx.doi.org/10.18452/22797.
Abstract:
Hybride anorganisch/organischen Systeme können die individuellen Vorteile, etwa eine hohe elektronische Mobilität in anorganischen und starke Licht-Materie-Wechselwirkung in organischen Halbleitern, kombinieren. Ein sinnvoller Nutzen dieser Heterostrukturen benötigt ein umfassendes Verständnis der Grenzfläche. Zwei Grenzflächenprozesse werden in dieser Arbeit behandelt.
Förster-Resonanzenergietransfer (FRET) wird zwischen einem InGaN/GaN Quantengraben und dem Polymer Cn-ether PPV untersucht. Trotz des hohen internen elektrischen Feldes im Quantengraben, ist effizienter Energietransfer möglich, solange andere nicht-strahlende Zerfallsprozesse unterdrückt werden. Dies wird mittels temperaturabhängiger PL und PLE Spektroskopie gezeigt. PLE demonstriert eine eindeutige Erhöhung der Emission des Akzeptors. Bei höheren Temperaturen dominieren nicht-strahlende Zerfallskanäle.
Ladungstransfer wird zwischen MoS2 und dem Molekül H2Pc untersucht. Die Kombination mit organischen Molekülen kann die Funktionalität von MoS2 erweitern. Photoelektronenspektroskopie (PES) zeigt einen Typ-II Heteroübergang an der MoS2/H2Pc Grenzfläche. Angeregte Elektronen gehen von den H2Pc Molekülen in die MoS2 Monolage über, wie mittels einer Verkürzung der PL Lebenszeit von H2Pc gezeigt wird. Photostrommessungen demonstrieren zudem, dass die transferierten Elektronen zu einer erhöhten Photoleitfähigkeit beitragen.
Zusätzlich werden auch einzelne 2D Übergangsmetall Dichalkogenide (TMDCs) untersucht. Um TMDCs von hoher Qualität herzustellen, wurde intern eine Wachstumsmethode entwickelt. Mittels PL Spektroskopie werden die so hergestellten Schichten charakterisiert. Die Vielseitigkeit der Methode wird anhand des Wachstums von Mischkristallen und Heterostrukturen gezeigt. Der Einfluss der dielektrischen Funktion des Substrates wird erforscht. Durch die Kombination von PES und Reflexionsmessungen kann eine gleichzeitige Abnahme sowohl der Bandlücke als auch der Exzitonen Bindungsenergie gezeigt werden.Hybrid inorganic/organic systems can combine the advantages of both materials such as high carrier mobilities in inorganic semiconductors and large light-matter interaction in organic ones. In order to benefit from these heterostructures, a thorough understanding of the interface is needed. Two processes occurring at the interface are looked at in this thesis. Förster resonance energy transfer (FRET) is studied between a single InGaN/GaN quantum well and the polymer Cn-ether PPV. Despite the large internal electric fields in the quantum well, efficient FRET is possible as long as other non-radiative decay channels are suppressed. This is shown by temperature dependent PL and PLE spectroscopy. PLE spectra clearly demonstrate an enhanced light emission from the acceptor. At elevated temperatures, non-radiative decay pathways become dominant. Excited-state charge transfer is studied on MoS2 in combination with the molecule H2Pc. The combination with molecules can extend the functionality of MoS2. Photoelectron spectroscopy (PES) reveals a type II energy level alignment at the MoS2/H2Pc interface. Excited electrons are transferred from H2Pc to MoS2, deduced from a shortening of the H2Pc PL decay time. Photocurrent spectra further show that the transferred electrons contribute to an enhanced photoconductivity. Additionally, bare 2D transition-metal dichalcogenides (TMDCs) are studied. In order to fabricate high-quality TMDC monolayers, a growth method was developed in-house. The grown monolayers are characterised by optical spectroscopy. The versatility of the method is demonstrated by the growth of alloys and heterostructures. The influence of the substrate dielectric function is investigated by comparing band-gaps measured by PES with the exciton transition energies obtained by reflectance measurements. An almost equal reduction in both energies with the substrate dielectric constant is seen.