Thèse numérisée par la Division de la gestion de documents et des archives de l'Université de Montréal.

Thèse numérisée par la Division de la gestion de documents et des archives de l'Université de Montréal

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Syftet med denna studie är att få större kunskap om NT-projektet, vilket är en kommunalsatsning på naturvetenskap och teknik, och om denna satsning gjort någon skillnad när det kommer till pedagogernas arbete med kemi i kommunens förskolor. Vidare kommer det också undersökas om de som arbetar med NT-projektet har någon särskild utbildning. Detta då det finns intresse att utvärdera NT-projektet och deras ”NT-lådor” samt införskaffa kunskap inom detta område inför framtida arbete inom kommunen ifråga. Kvalitativ- och kvantitativforskningsmetod har använts för att nå fram till frågeställningen. Jag har genomfört en kvalitativ intervju som var ostrukturerad. Ostrukturerade intervjuer liknar vanliga samtal och passar bäst i detta sammanhang då jag inte har stor kunskap när det kommer till NT-projektet. Jag har även genomfört en enkätundersökning som riktade sig till pedagogerna i tretton förskolor. Resultatet av intervjun ledde till en större inblick i NT-projektet och dess arbete.  Enkätundersökningens resultat visar på betydelsen av material, kunskap och tid, faktorer som uppfattas som bristfälliga i den pedagogiska verksamheten i dagsläget. / The purpose of this study is to gain a greater knowledge of the NT project, which is a local government investment in science and technology, and if this effort made ​​a difference when it comes to the teachers' work in chemistry in the municipal preschools. Furthermore, it will also examine whether those who work with NT project has any special training. There is an interest to evaluate NT-project and their "NT-boxes" and acquire knowledge in this area for future work within the community in question. Qualitative and quantitative research methods have been used to reach the issue. I conducted a qualitative interview that was unstructured. Unstructured interviews are similar to regular conversation and fits best in this context, this because I do not have great knowledge regarding the NT-project. I have also carried out a survey which was directed to the educators in thirteen preschools. The result of the interview led to a greater insight into the NT-project and its achievements. Questionnaire survey results show the importance of materials, knowledge and time, factors that are perceived as deficient in the preschool in the current situation.

The success of unmanned aerial vehicles (UAV) in the Iraq and Afghanistan conflicts has led to increased interest in further digitalization of the United States armed forces. Although unmanned systems have been a tool of the military for several decades, only recently have advances in the field of Micro-Electro-Mechanical Systems (MEMS) technology made it possible to develop systems capable of being transported by an individual soldier. These miniature unmanned systems, more commonly referred to as micro air vehicles (MAV), are envisioned by the Department of Defense as being an integral part of maintaining America?s military superiority. As researchers continue to make advances in the miniaturization of flight hardware, a new problem with regard to MAV field operations is beginning to present itself. To date, little work has been done to determine an effective means of collecting, analyzing, and handling information that can satisfy the goal of using MAVs as tools for persistent surveillance. Current systems, which focus on the transmission of analog video streams, have been very successful on larger UAVs such as the RQ-11 Raven but have proven to be very demanding of the operator. By implementing a new and innovative data processing methodology, currently existing hardware can be adapted to effectively present critical information with minimal user input. Research currently being performed at Texas A&M University in the areas of attitude determination and image processing has yielded a new application of photographic projection. By replacing analog video with spatially aware high-resolution images, the present MAV handheld ground control stations (GCS) can be enhanced to reduce the number of functional manpower positions required during operation. Photographs captured by an MAV can be displayed above pre-existing satellite imagery to give an operator a lasting reference to the location of objects in his vicinity. This newly generated model also increases the functionality of micro air vehicles by allowing for target tracking and energy efficient perch and stare capabilities, both essential elements of persistent surveillance.

Este trabajo describe los resultados de la tesis de maestría de la autora, los cuales muestran los significados personales (conocimientos) de los estudiantes de Economía de tercer semestre de una universidad nacional peruana respecto a temas de estadística descriptiva: simetría estadística y medidas de tendencia central.Se aplicaron las herramientas del primer nivel de análisis del Enfoque Onto-Semiótico (EOS) del conocimiento e instrucción matemática para determinar los significados institucionales considerados por la universidad y los significados personales de los alumnos con respecto a los temas mencionados. Previamente, para determinar los significados personales, se aplicó un cuestionario validado por expertos con criterios de evaluación basados en los objetos primarios del primer nivel de análisis del EOS.Entre los resultados, se identificaron los conocimientos de los alumnos y se constató que la elaboración de criterios de evaluación requiere de análisis previos que determinen una congruencia entre lo enseñado y lo que se espera hayan aprendido los estudiantes.

This dissertation is a work of multidisciplinary comparative philosophy of religion. It comprises a philosophical analysis and evaluation of Western traditions of philosophy and theology around the issue of religious anthropomorphism. More specifically, this study focuses on the tradition of Neoplatonic onto-theology in Western thought, and the divide in this tradition over the question of religious anthropomorphism and the divine nature. The dissertation frames this divide in terms of the distinction between an “anti-anthropomorphic” conception of the divine nature on the one hand, and an “attenuated anthropomorphic” conception of the divine nature on the other. Chapters two and three analyze key figures and texts from the “attenuated anthropomorphic” and “anti-anthropomorphic” traditions of Neoplatonic onto-theology. The fourth chapter considers a significant critique of this tradition as a whole leveled by Karl Barth and Martin Heidegger, among others, namely, that the onto-theological project as such constitutes a form of conceptual anthropomorphism. The fifth chapter provides an overview of the multidisciplinary scientific field known as the “bio-cultural study of religion,” which has yielded compelling evidence that anthropomorphic religious ideas are maturationally natural, culturally adaptive in certain past cultural contexts, and thus may reflect human cognitive limitations. The final chapter incorporates evidence from the BCSR (bio-cultural study of religion) in a comparative philosophical evaluation of the debates within and around the traditions of Neoplatonic onto-theology. The central philosophical thesis of this dissertation is that evidence from the BCSR negatively impacts—without decisively undercutting—the plausibility of the “attenuated anthropomorphic” tradition relative to the “anti-anthropomorphic” tradition. It does so by demonstrating that the anthropomorphic attributions inherent to the attenuated anthropomorphic view are undergirded by hypersensitive cognitive mechanisms, which are prone to misfiring. However, the BCSR also indicates several important weaknesses of the anti-anthropomorphic tradition of Neoplatonic onto-theology with regard to the social viability of this tradition. The BCSR also erodes the plausibility of the critique that onto-theology is itself a form of gross conceptual anthropomorphism. It does so by demonstrating that abstract onto-theological concepts lack the conceptual and cognitive liabilities inherent to the type of religious anthropomorphism advocated by Barth and Heidegger.

Den här rapporten undersöker med en devisingprocess som utforskande metod ett gestaltande av en text utifrån idéerna om sammanflätningar bortom uppdelningen mellan teori och praktik. Processen möter under arbetets gång på motstånd och behöver därför fördjupas ytterligare innan gestaltningen kan komma vidare igen.

I develop a framework for making visible the impacts that science has on human subjectivity, along with demonstrating how these transformations support the existing social order. In order to develop this framework, I critique the work of Wilfrid Sellars. Sellars is one of the few analytic philosophers of science who directly addresses the connections between science and subjectivity. What makes Sellars particularly interesting is the way he sought to preserve a strong conception of normativity alongside a quasi-eliminativist scientific realism. I set the stage for my critique of Sellars by contrasting two different accounts of subjectivity, one Cartesian, the other pragmatic. I argue in favor of the pragmatic because it completely grounds the subject in the world (a point with which Sellars basically agrees). I begin my critique of Sellars by explaining his scientific realism. This is then connected to his vision of the interconnections between science and subjectivity. I then argue that Sellars' scientific realism is fundamentally incoherent, which leads his system into nihilism. From this I trace out the role that science can play with respect to subjectivity in a nihilistic world. To partially counter this nihilism, I articulate an alternative to scientific realism that is based, in part, on my pragmatic account of subjectivity. I conclude by re-appropriating elements of Sellars' philosophy, routed through my alternative scientific realism, in order to complete the framework discussed above. / Ph. D.

Cette thèse s'inscrit dans le cadre d'un projet de l'Agence National de Recherche (ANR) dans lequel participent deux sociétés et deux laboratoires universitaires. L'objectif de ce projet consiste à améliorer les propriétés mécaniques (résistance à l'abrasion) et thermiques (température de dégradation) de revêtements fluorés antiadhésifs en y intégrant des nanoparticules de silice. Or, la silice est une charge hydrophile qui se disperse difficilement dans une matrice fluorée. C'est pourquoi nous avons envisagé de modifier sa surface avec des réactifs fluorés, et la nature des divers précurseurs a une influence sur l'amélioration de la dispersion des nanoparticules. Ainsi, nous avons, dans un premier chapitre, étudié la miscibilité et la compatibilité des polymères fluorés entre eux. Les polymères fluorés sont réputés pour leur inertie chimique, hydrophobie et leurs propriétés thermiques très avantageuses. Mais les très bonnes propriétés des polymères fluorés entraînant parfois des difficultés de mise en œuvre, nous avons choisi de travailler avec deux copolymères fluorés, le poly(TFE-co-HFP), un copolymère statistique à base de tétrafluoroéthylène (TFE, -CF2-CF2-) et d'hexafluoropropène (HFP, -CF(CF3)-CF2-) voisin du PTFE utilisé pour les revêtements, et le poly(VDF-co-HFP), un copolymère composé de fluorure de vinylidène (VDF, -CH2-CF2) et d'hexafluoropropène. Ils présentent de bonnes propriétés et sont faciles à employer à l'état fondu de par leurs faibles températures de fusion (respectivement de 140 et 275°C pour le poly(VDF-co-HFP) et le poly(TFE-co-HFP)). Des mélanges binaires à l'état fondu ont été réalisés puis caractérisés entre ces deux copolymères semi-cristallins mais également avec un polyéther fluoré, composé de plusieurs unités d'oxyde d'hexafluoropropène (HFPO, -CF(CF3)CF2O-) totalement amorphe. Les résultats obtenus suite à ces mélanges ont indiqué les trois types de précurseurs fluorés à employer lors des modifications de surface et ce en fonction de la matrice fluorée : composés à base de TFE (-CF2-CF2-), de VDF (-CH2-CF2-) et de l'HFPO (-CF(CF3)CF2O-). Ainsi, le second chapitre est consacré aux stratégies de synthèse de ces précurseurs fluorés contenant des motifs VDF et HFPO. Deux méthodes de polymérisation ont été réalisées : 1) La polymérisation radicalaire par transfert d'iode (ITP) du VDF conduisant à CnF2n+1-[CH2-CF2]m-I ; 2) La polymérisation anionique par ouverture de cycle de l'HFPO permettant la synthèse C3F7O-[CF(CF3)CF2O]-CF(CF3)-COX avec X : groupements fonctionnels. Ces produits ont été caractérisés par spectroscopies RMN du 19F et du 1H, IR, GPC, DRX, ATG et DSC. Les oligomères du TFE (CnF2n+1-I ou CnF2n+1-C2H4-SH avec n= 4 ou 6) n'ont pas été préparés du fait des risques encourus lors de la manipulation du TFE (gaz explosif). Après leurs synthèses, fonctionnalisations et caractérisations, nous les avons greffés à la surface de silices submicroniques. La principale méthode de greffage employé est le « grafting onto » qui permet de modifier la surface des particules inorganiques avec des macromolécules (oligomères ou polymères) et le troisième chapitre présente trois méthodes de greffage : 1) L'addition radicalaire de RFI ou RFC2H4SH sur une double liaison (vinylique ou allylique) ; 2) La condensation d'un oligomère à base d'HFPO fonctionnalisé ester méthylique sur une silice possédant des fonctions amine ; 3) La méthode la plus communément, utilisée l'hydrolyse-condensation, à partir d'oligo(HFPO) fonctionnalisés alkoxysilane. Les méthodes d'analyses employées afin de caractériser ces nanohybrides fluorés sont les spectroscopies RMN 1H et 29Si à l'état solide, IR, les analyses élémentaires et thermogravimétriques. Nous avons utilisé ces différentes stratégie de modifications de surface afin d'obtenir une large gamme de silices modifiées avec des groupements fluorés tout en tenant compte de la miscibilité des chaînes fluorées entre elles (Chapitre 1). / This thesis is part of a project of the National Research Agency (ANR) which involved two companies and two university laboratories. The objective of this project is to improve the mechanical properties (abrasion resistance) and thermal (degradation temperature) nonstick fluorinated coatings by incorporating silica nanoparticles. However, silica is a hydrophilic filler which is hardly dispersed in a fluoridated matrix. Therefore, we planned to modify its surface with fluorinated reagents, and the nature of various precursors has an influence on improving the nanoparticles dispersion. Thus, we, as a first chapter, studied the miscibility and compatibility of the fluoropolymers. Fluoropolymers are known for their very attractive properties like chemical inertness, hydrophobicity and thermal. But these very good properties of fluoropolymers sometimes cause difficulties application, we chose to work with two fluorinated copolymers, poly (TFE-co-HFP), a copolymer based on tetrafluoroethylene (TFE,-CF2-CF2-) and hexafluoropropylene (HFP,-CF(CF3)-CF2-) neighbor of PTFE used for coatings, and poly (VDF-co-HFP), a copolymer composed of vinylidene fluoride (VDF, -CH2-CF2) and hexafluoropropylene. They have good properties and are easy to use in blend due to their low melting temperatures (140 and 275° C for poly (VDF-co-HFP) and poly (TFE-co-HFP), respectively). Blends have been realized and characterized between two semi-crystalline copolymers but also with a fluorinated polyether composed of several units of hexafluoropropylene oxide (HFPO,-CF(CF3)CF2O-) which is completely amorphous. The results obtained from these blends indicated that the three types of precursors can be used for fluorinated surface modifications and in function of the fluoropolymer : compounds are based on TFE (-CF2-CF2-), VDF (-CH2-CF2-) and HFPO (-CF(CF3)CF2O-). Thus, in the second chapter, the synthesis of these fluorinated precursors containing VDF and HFPO units are shown for this, two polymerization methods were carried out : 1) The iodine transfer polymerization (ITP) of VDF ; 2) The anionic polymerization by ring opening of HFPO. These products were characterized by 19F and 1H NMR spectroscopy, FTIR, GPC, XRD, TGA and DSC. Oligomers of the TFE (CnF2n+1-I or CnF2n+1-C2H4-SH with n = 4 or 6) have not been prepared because of the risks incurred during the handling of TFE (explosive gas). After their synthesis, functionalization and characterization, we have grafted them on the surface of silica nanoparticles. The main method used is the "grafting onto" which allows to modify the surface of inorganic particles with macromolecules (oligomers or polymers) and the third chapter presents three methods of grafting : 1) The radical addition of RFI and/or RFC2H4SH on a double bond (vinyl or allyl) ; 2) The condensation of an oligomer based HFPO functionalized methyl ester on a silica with amine functions ; 3) The most commonly used hydrolysis-condensation, using oligo (HFPO) functionalized alkoxysilane. The analysis methods used to characterize these fluorinated nanohybrids are the 1H and 29Si solid state NMR, FTIR, elemental and thermogravimetric analysis. We used these different surface modification to obtain a wide range of modified silica with fluorinated groups. After their characterization, these fluorinated silica are introduced by blend into two fluorinated matrices poly (VDF-co-HFP) and poly (TFE-co-HFP). The fourth is dedicated to the study of nanocomposite poly (VDF-co-HFP) / silica. Initially, a state of the art is presented as this type of composite has been widely discussed in the literature contrary to nanocomposites poly (VDF-co-HFP) or poly (TFE-co-HFP) with fluorinated nanoparticles.