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Hedman, Angela M. "What is the significance of functional found object art? : found object purses inspired by 1970's and 1980's design." Virtual Press, 2006. http://liblink.bsu.edu/uhtbin/catkey/1345341.
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The central focus for this creative project was to explore the possibilities of found object and recycled art with emphasis on function and design. After researching the art and the artists who made/make it, a collection of functional art was created. The project resulted in a body of work that consisted of thirteen bags and purses that were made from gift cards and gameboards. The design of 1970's and 1980's art was used as inspiration. Traditional metalsmithing techniques were required for the completion of each work. Copper wire was used as both a structural and ornamental element. The awareness of recycled art will be heightened. Found object and recycled art is significant, purposeful, and important in both the history and future of art.Department of Art
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Kay, Lacey. "Fashionable Art." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3337.
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My final thesis exhibition, Fashionable Art, opens up a link between art and fashion. I used clay as my primary medium to create hyper-realistic handbags in the style of Trompe l'oeil. I am interested in placing art in fashion settings and fashion in art settings. In the show, I placed many purses on pedestals for a gallery setting, in a glass case for a purse shop setting and also placed large photos in a fashion photo shoot setting. I am concerned with creating an environment that celebrates the handbag from just an accessory to an art object. By using clay as my primary media, the purse becomes a more permanent representation. I am able to freeze in time a small piece of our cultural timeline. I am interested in creating these hyper-realistic works because I want the viewer to be led into thinking these are real purses and to explore the idea of fashion being more than just a piece of clothing or accessory, but also the history and affect it has on each of us, big or small.
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Spahija, Jadranka. "Pursed-lips breathing in health and disease." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0016/NQ44595.pdf.
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Bariau, Annabelle. "Synthèse de bétâ-aminocétones optiquement pures." Clermont-Ferrand 2, 2004. http://www.theses.fr/2004CLF21514.
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Ce travail décrit une méthode générale de synthèse de bétâ-aminocétones chirales céto-protégées, précurseurs de pipéridines, ainsi que la préparation et l'utilisation d'une alpha-silylamine pour l'obtention de pipéridines silylées. La méthode de synthèse des aminocétones chirales repose sur l'addition conjuguée de la N-benzyl-N-alpha-méthylbenzylamine sur un ester alpha, bétâ-éthylénique, suivie de diverses modifications fonctionnelles, notamment la transformation de l'ester en cétone via l'amide de Weinreb. La mise au point de cette méthode a nécessité une étude approfondie de la réaction d'alkylation de l'amide de Weinreb par des réactifs de Grignard, afin d'éviter une racémisation partielle. Nous avons également démontré, qu'une amine N-alpha-silylée racémique, engagée en réaction avec divers aldéhydes, permettait la formation hautement diastéréosélective de pipéridines 2,6-cis-silylées. L'élimination du groupement silylé conduit à des énaminones cycliques, qui possèdent un fort potentiel synthétique
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Durrat, François. "Etude de la réactivité d'azétidines enantiomériquement pures." Versailles-St Quentin en Yvelines, 2005. http://www.theses.fr/2005VERS0030.
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Nous avons étudié trois aspects de la réactivité d'azétidines énantiomériquement pures: après avoir adapté une extension de cycle décrite dans la littérature pour des pyrrolidines, l'étude des mécanismes réactionnels impliqués dans chacun de ces processus a mis en évidence la spécificité de la réactivité des azétidines. Puis nous avons étudié la capacité des sels d'azétidinium à se réarranger en des hétérocycles de plus grande taille sous l'action d'une base forte. Il a été discuté des facteurs contrôlant la sélectivité de ces réactions qui s'est toujours avérée excellente malgré la compétition permanente entre plusieurs voies réactionnelles possibles. Enfin, l'ouverture des sels d'azétidinium par des nucléophiles s'est révélée particulièrement régiosélective. La modélisation moléculaire a permis d'apporter des éléments de réponse à la sélectivité observée. L'ensemble de ces résultats a permis d'accroître les connaissances sur la réactivité des azétidines et d'envisager de nouvelles applications en synthèse organiqueThree aspects of the reactivity of enantiopure azetidines have been studied. We first adopted the ring expansion reaction described in the literature for pyrrolidines, and studied the mechanisms involved in these enlargement reactions, which put in light the specifie reactivity of azetidines. We next studied the ability of azetidinium salts to rearrange to heterocycles of larger size under strong basic conditions. Parameters goveming the selectivity of these reactions were excellent in aH cases even though several pathways were possible, are discussed. Ring opening reactions of azetidinium salts by different nucleophiles showed excellent regioselectivity. Ca1culations allowed for a rationalisation of experimental results. The work discussed in this dissertation permitted to improve knowledge about azetidines reactivity and should allow for new applications in organic chemistry
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BOUSQUET, ROCHETEAU BRIGITTE. "Les dysgenesies gonadiques pures a caryotype 46,xx." Angers, 1989. http://www.theses.fr/1989ANGE1062.
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Broni, Stephen Christopher. "Penguins and purse-seiners : competition or co-existence?" Master's thesis, University of Cape Town, 1985. http://hdl.handle.net/11427/7611.
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Bibliography: leaves 110-124.The relationships between the pelagic purse-seine fishery and Jackass penguins (Spheniscus demersus) were investigated at Saldanha Bay, on the south-western coast of South Africa, between December 1982 and August 1983. The distribution at sea and the foraging behaviour of Jackass Penguins were examined by running standard transects with a sail boat in waters close to the birds' breeding islands. The use of a sail boat permitted close observation of foraging penguins with minimal disturbance. Penguin numbers at sea were lowest in December, when birds were confined to the breeding islands during moulting and were high in March and July during breeding peaks. While most penguin group sizes were small (one or two birds), over 44 % of penguins occurred in groups of more than 10 birds. Three stereotypic penguin group formations occurred: 'facing-search', 'line-abreast', and 'pointed-ovoid'. Penguins also foraged in association with other sea birds and marine mammals.
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Fairhurst, Neil. "Synthesis of modified purines." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/46294.
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Ledbetter, Max. "Competition and information among British Columbia salmon purse seiners." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/27127.
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Traditional fisheries models are based upon simplistic Poisson assumptions concerning fleet behavior. Fishing vessels are assumed to operate independently of one another and to sample the fish population in a random fashion. This dissertation provides a review of the major component processes contributing to the operation of fishing fleets and uses field data on salmon purse seiners to present tests of the hypotheses contained in the historical assumptions. Data pertaining to interference competition and information were analyzed. Since fisheries management usually entails assumptions concerning the form of exploitation rate responses to effort, the consequences of non-random fisherman behavior were explored. Alternative models of the fishing process were proposed and examined.
In British Columbia, salmon purse seiners line up at fishing access points, forming well defined queues. These queues were measured over time in Johnstone Strait using a one dimensional recording scale.
The distribution of effort was fit to theoretical truncated Poisson and truncated negative binomial distributions. Most data fit the negative binomial rather than the Poisson. Movement patterns and time series of catches were also non-random. Analysis of variance methods indicated that line-up lengths reflected set catch rates.
Waiting times were quantified using functional and statistical models. Using the waiting times, the fleet set effort and number of sets per boat were calculated. Although the fleet set effort was a near linear function of the number of boats in the area, interference competition produced an initial decrease in sets per vessel.
Two models were presented for exploitation rates in relation to queuing patterns. The overflight model was based upon the line-up distributions and assumed that information was good. The model fit well and the parameter estimates reflected anecdotal and statistical information about fish behavior. The exploitation rates saturated at an effort level of 100 vessels.
As an alternative model, the negative binomial distribution was used to estimate exploitation rates from catch per vessel distributions. It was assumed that salmon abundance does not affect the shape of the distributions. As effort increased, the distribution of catch per vessel was predicted to become more skewed to the origin. The parameter describing the shape of the distribution, k, should have tracked the fishing power of the fleet (decreasing as the distribution became more skewed).
After fitting the weekly distributions, it was found that the relative exploitation rates from the sales slip model did not saturate like the parameters of the overflight model. An alternative derivation indicated that the shape of catch per unit effort distributions responds to the size and aggregative properties of the fleet and to the magnitude of the catch. As the mean catch per set increases, k will increase. Salmon abundance, fleet numerical responses and vessel aggregations affect the skewness of the catch per unit effort distributions.
In general, traditional model assumptions were rejected. Vessels did not operate independently. Boats were not distributed in a random fashion. The overflight model provided predicted exploitation rates. The exploitation response to effort was qualitatively distinct from the forms incorporated in traditional models.Science, Faculty of
Zoology, Department of
Graduate
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Jesse, Roland. "Dynamic presentations for illustration purposes." [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=971682550.
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Aubrey, Richard H. "Moral Purposes of Successful Teachers." Digital Commons @ East Tennessee State University, 1998. https://dc.etsu.edu/etd/2879.
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The purpose of this study was to describe the moral purposes of successful teachers. Moral purpose was defined as the values and beliefs associated with serving society and serving individuals other than oneself Key informant interviews were conducted with the 18 finalists for Tennessee Teacher of the Year. Interviewees, were asked four basic questions: (1) Why did you choose teaching as a career? (2) How would you describe your moral purpose in teaching? (3) Has your moral purpose changed over time? (4) How would you describe the teacher's role in society? Data were analyzed qualitatively. Detailed profiles of each of the informants and reports of each interview are included. Conclusions were generally consistent with the literature. Teachers expressed several reasons for entering the profession: (1) working with people; (2) serving society; (3) continuing successful school experiences; and (4) desiring to emulate a significant teacher. Teachers described their moral purposes as related to caring, community awareness, lifelong learning, efficacy, and ethics. The teacher's role in society was described in similar terms. Several other important conclusions are described. First, these successful teachers had a sense of destiny with regard to entering the profession. This sense of destiny demonstrated the degree to which these successful teachers value the profession. Second, they described the importance of teachers serving others as role models. Third, most of the teachers suggested that their moral purposes have not changed very much over time even though students and methodologies have changed. Finally, they described community service as an important activity of the successful teacher. Again, these findings were consistent with the literature describing the dispositions of effective teachers. Recommendations for further research are included along with implications for teacher education and for in-service teachers. A model for devising a moral development plan for teacher education units is presented. Another model describes the process whereby in-service teachers can work to describe and develop their moral purposes. This study provides a detailed analysis of how successful teachers described their profession. The attitudes and beliefs underlying these descriptions are of significance to teachers and to teacher educators.
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Välitalo, R. (Riku). "The Philosophical Classroom:balancing educational purposes." Doctoral thesis, Oulun yliopisto, 2018. http://urn.fi/urn:isbn:9789526219936.
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Abstract The practice of teaching links long-standing philosophical questions about the building blocks of a good life to daily judgments in the classroom; in the journey to becoming a person who teaches, we must seek different ways of understanding what “good” means in the context of different social practices and communities. This doctoral thesis examines the educational innovation known as Philosophy for Children (PFC) as a platform for teachers and students to address such questions within a community of philosophical inquiry (CPI). Advocates of PFC seek to promote radical change in our understanding of growth, teaching and the relationships formed in educational contexts. In addressing these issues, this thesis contributes to the ongoing conversation about the teacher’s role within the PFC movement. The thesis comprises four interrelated studies that examine the possibilities and limits of PFC ideas by considering them in the light of general educational theorising about pedagogical action. In addition to the PFC literature, the study’s main sources are 1) the Continental tradition of European educational discourse, especially in German-speaking regions, and 2) the writings of the contemporary educational thinker Gert Biesta. The former offers an opposing view to the idea of a symmetrical, communal emergent system that seems to inform second-generation understandings of philosophical dialogue in an educational context. Gert Biesta’s ideas, especially in relation to the purpose and aims of education, help in envisioning CPI as a structuring element in teaching as a whole and all aspects of classroom life. The four studies focus on pedagogical action, the nature and role of authority in CPI and teacher agency. The thesis contends that teaching and, in particular, building a community of classroom inquiry, requires a vision of teaching as a reflective practice, informed by subject-specific and educational judgments as key dimensions of teacher reflection and wisdomTiivistelmä Opettajan ammatissa filosofiset kysymykset hyvästä elämästä ja sen etsimisestä yhdistyvät opettajan päivittäisiin ratkaisuihin luokkahuoneessa. Tämä väitöskirja käsittelee kasvatuksellisia edellytyksiä ja mahdollisuuksia Filosofiaa lapsille -ohjelmassa, joka on pyrkinyt luomaan alustaa kysymyksille hyvästä elämästä osana lasten kasvua ja kasvatusta. Väitöskirja keskittyy tarkastelemaan tämän ohjelman piirissä käytyä keskustelua kasvusta, opetuksesta ja kouluopetuksessa muodostuvista kasvatussuhteista. Erityisesti väitöskirja tarkastelee edellä mainittuja käsitteitä hahmotellakseen filosofisen pedagogiikan erityispiirteitä kasvatuksellisena käytäntönä. Samalla väitöskirja kiinnittyy myös yleisemmin kasvatuksen ja opetuksen luonnetta ja tavoitteita koskevaan keskusteluun. Väitöskirja sisältää neljä toisiinsa liittyvää tutkimusta, jotka tarkastelevat pedagogisen filosofian mahdollisuuksia ja ongelmakohtia yleisen kasvatustieteen piirissä tehtyjen teoreettisten hahmottelujen valossa. Filosofiaa lapsille -liikkeen edustajien lisäksi päälähteinä toimivat 1) mannermainen pedagogisen toiminnan teorian traditio (erityisesti saksan kielialueella käyty keskustelu) ja 2) Gert Biestan viimeaikaiset kirjoitukset. Ensimmäinen tarjoaa vastakkaisen näkemyksen symmetriselle, itseään luovalle systeemille, joka vaikuttaa olevan varsinkin liikkeen toisen sukupolven edustajien filosofisen pedagogiikan kehittelyiden ytimessä. Gert Biestan ajatukset, erityisesti hänen ideansa kasvatuksen päämääristä ja tavoitteista, antavat eväitä muodostaa filosofisesta pedagogiikasta opetusta strukturoiva kokonaisuus, joka toimii oppiainerajat ylittävänä, luokan elämää ohjaavana periaatteena. Väitöskirja keskittyy erityisesti pedagogisen toiminnan, auktoriteetin luonteen ja roolin sekä opettajan toimijuuden käsitteisiin. Väitöstutkimuksen keskeinen tulos on, että filosofisesti orientoituneen kasvatuksellisen käytännön muodostuminen luokkaan vaatii opettajalta moniulotteista omien pedagogisten ratkaisujen reflektointia, ja suuntaa häntä kohti kasvatuksellista viisautta
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Ström, David. "Purposes of Software Architecture Design." Thesis, Blekinge Tekniska Högskola, Avdelningen för programvarusystem, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-2830.
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Software architecture design as an engineering field has evolved greatly during the last 15 years, which is evident by the number of methods, styles, patterns, and guidelines available for its practitioners in industry. This paper takes a closer look at the purposes behind this field to reveal the level of discrepancy in pursued purposes between industrial practitioners and published methods for software architecture design. In our research surveys of architecture design methods and of purposes at a number of industrial practitioners resulted in two sets of purposes which were eventually compared and the level of discrepancy identified.Mjukvarudesign är ett område inom mjukvaruindustrin som utvecklats omfattande under de senaste 15 åren, vilket synliggjorts av de nya metoder, designstilar, designmönster och paradigmer som gjorts tillgängliga för mjukvaruutvecklare idag. Den här uppsatsen gör en djupgranskning av syftena bakom detta arbetsområde för att upptäcka eventuella skillnader mellan de syften som framhålls av befintliga arkitekturmetoder och de syften som åtsträvas av utövare inom mjukvaruindustrin.
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Le, Thanh Nghi. "Sulfilimines et sulfoximines énantiomériquement pures : synthèse et applications en catalyse." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS185/document.
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Les sulfoximines sont une famille de composés dont les domaines d’applications sont très variés. Elles sont utilisées comme auxiliaires, ou ligands pour la synthèse asymétrique et répertoriées comme groupements à forts potentiels dans des composés biologiquement actifs. Les sulfoximines fluorées sont bien plus rares et difficiles d’accès, mais de par les propriétés spéciales induites par le fluor, ont récemment attirées l’attention. Elles ont notamment été utilisées avec succès en tant que réactifs de (per)-fluoroalkylation ou comme groupements super-électroattracteurs. Cependant, il n’y a que de rares exemples de sulfoximines fluorées dans des composés bioactifs. De plus, à notre connaissance, les S-perfluoroalkyl sulfoximines n’ont encore jamais été utilisées comme ligands de métaux ou organocatalyseurs.La thèse porte sur le développement de la synthèse et la fonctionnalisation des sulfoximines fluorées pour la préparation de ligands et d’organocatalyseurs, notamment en version énantiopures. Elle est divisée en 3 chapitres.Le premier chapitre porte sur la synthèse des sulfoximines et des sulfilimines fluorées énantiopures. Sur différentes étapes de la synthèse de ces composés, plusieurs méthodes ont été utilisées, par exemple, la séparation de diastéréoisomères par l’acide de camphorsulphonique, l’oxydation asymétrique de Kagan, Modena, Uemura et aussi l’imination oxydante asymétrique. La CFS (Chromatographie par Fluide Supercritique) semi-préparative a permis de séparer les différents énantiomères des sulfilimines fluorées. L’oxydation des sulfilimines a permis d’obtenir les sulfoximines énantiopures avec de bons rendements. Ces sulfilimines et sulfoximines ont des configurations absolues stables, leurs caractéristiques optiques ont été mesurées ainsi que leurs structures ont été déterminées par diffraction des rayons-X. Le deuxième chapitre est principalement axé sur la N-fonctionnalisation des sulfoximines et leurs développements comme ligands et organocatalyseurs pour la catalyse. Nous avons pu montrer que l’utilisation des micro-ondes pour activer le couplage entre les sulfoximines libres et les aromatiques halogénés permettait d’obtenir de bons résultats et même de diminuer le temps de réaction par rapport à la méthode de chauffage conventionnel. Ce développement a également été utilisé pour préparer des ligands/organocatalyseurs chiraux. Ces nouveaux ligands, sulfoximines fluorées chirales, ont été appliqués dans des procédés de catalyse pour la réaction de Friedel-Crafts, de Biginelli et même comme réactif de Shibata asymétrique pour la trifluoromethylation. Nous avons montré également que ces composés peuvent être utilisés comme ligands ou organocatalyseurs chiraux dans la réaction de Mukaiyama ou de cycloaddition de Diels-Alder conduisant aux produits avec de bons rendements.Le dernier chapitre est basé sur la fonctionnalisation des sulfoximines fluorées par une réaction inédite d’ortholithiation. Dans cette partie, nous démontrons que la fonction sulfoximine fluorée joue le rôle de groupe ortho-directeur. Cela nous a permis d’accéder à une grande variété de sulfoximines orthosubstituées aux structures totalement nouvelles. Les produits dérivés ortho ont été utilisés comme réactifs dans de nombreuses réactions: dans la réaction de Sonogashira, dans la préparation de nouveaux réactif de trifluorométhylation et dans la synthèse d’analogues de composés biologiquement actifsSulfoximines belong to a family of compounds with various application areas. They are used as auxiliaries or ligands for asymmetric synthesis and classified as high potential groups in biologically active compounds. Fluorinated sulfoximines are even more scarce and difficult to access, but special properties induced by fluorine, have attracted particular attention. They have been successfully used as (per)-fluoroalkylating reagent or as super-electron-withdrawing groups. However, there are only a few examples of fluorinated sulfoximines in bioactive compounds. To our knowledge, S-perfluoroalkylated sulfoximines have never been used as ligands of metals or organocatalysts so far.The Thesis focuses on the synthesis and functionalization of fluorinated sulfoximines for the preparation of chiral ligands and/or organocatalysts. It is divided into three chapters.The first chapter deals with the synthesis of enantiopure fluorinated sulfoximines and sulfilimines. During our synthesis, several methods were used, for example, separation of diastereoisomers by using camphorsulphonic acid, and the asymmetric oxidation of Kagan, Modena, Uemura as well as the asymmetric oxidizing imination. The SFC (Supercritical Fluid Chromatography) semi-preparative permits to separate the different enantiomers of fluorinated sulfilimines. Oxidation of sulfilimines led to the formation of enantiopure sulfoximines in good yields. These sulfilimines and sulfoximines are stable retaining their absolute configuration. Optical characteristics were measured and their structures were determined by X-ray diffractions. The second chapter focuses mainly on the N-functionalization of sulfoximines and their developments as organocatalysts and/or ligands for catalysis. Coupling reaction of free sulfoximines with halogenated aromatic under microwave activation led to the formation of products in good yields within short reaction time. This development has also been used to prepare chiral ligands/ organocatalysts. These new chiral fluorinated sulfoximines have been applied in catalytic processes for Friedel-Crafts reaction, Biginelli transformation and as Shibata’s asymmetric trifluoromethylation reagent. We also showed that these compounds may be used as chiral ligands or organocatalysts in Mukaiyama reaction or in Diels-Alder cycloaddition affording products in good yields.The last chapter is based on the functionalization of fluorinated sulfoximines by an ortholithiation reaction. In this part, we have demonstrated that the fluorinated sulfoximine function acts as ortho-directing group. This allowed us to access a wide variety of new ortho-substituted sulfoximine structures. Ortho-derivatives were used as reagents in Sonogashira reaction, in the preparation of novel trifluoromethylation reagents and in the synthesis of some biologically active compound analogues
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Brinley, Tiffany Ann. "MICROWAVE-ASEPTIC PROCESSING OF SWEETPOTATO PUREES: DIELECTRIC PROPERTIES AND MICROBIAL INACTIVATION EVALUATION." NCSU, 2006. http://www.lib.ncsu.edu/theses/available/etd-08292006-130008/.
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Buergy, Alexandra. "Modulation de la texture et de la fragmentation tissulaire de fruits lors de traitements thermiques par les modes de culture et la maturation : impact sur la texture des purées Pectin modifications in raw fruits alter texture of plant cell dispersions Apple puree’s texture is independent from fruit firmness Pectin degradation explains tissue fragmentation of fruits during thermomechanical processes for puree production." Thesis, Avignon, 2021. http://www.theses.fr/2021AVIG0282.
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L’objectif de cette thèse était de comprendre comment les caractéristiques structurales des pommes peuvent être liées aux facteurs structurels des purées après cuisson et fragmentation tissulaire. Les caractéristiques structurales du fruit ont été modulées par les cultivars, les pratiques culturales et la maturation, et les conditions du procédé (thermique : 50–95 °C et mécanique : 100–3000 tr/min) ont été modulées grâce à un cuiseur-broyeur. La structure de la purée (volume occupé par les particules, taille des particules, viscosité du sérum) et la texture (viscosité, seuil d’écoulement, G’ et G’’) ont ensuite été analysées et comparées entre les matières premières et les conditions du procédé. Les pectines ont été extraites et leur composition chimique ainsi que leur structure ont été corrélées à la structure de la purée. La taille des particules s´est montré être le déterminant majeur de la texture des purées en absence de dilution ou de concentration. Le degré d’adhésion cellulaire (défini par la structure et la composition des pectines) a eu un impact plus important sur la taille des particules que la taille des cellules individuelles (définie par les cultivars ou les pratiques culturales). D’autres facteurs structuraux, tels que la viscosité du sérum ou la quantité de pulpe, n’ont contribué à la texture des purées qu’à taille de particules constante. La fragmentation tissulaire, déterminant la taille des particules pendant le procédé, a été principalement affectée par l’intensité du cisaillement. Le stockage post-récolte des pommes et des températures élevées (95 °C) ont induit une dégradation et une solubilisation des pectines, en particulier par l'hydrolyse des chaînes latérales des rhamnogalacturonanes I. Cela a réduit l’adhésion cellulaire et la fragmentation tissulaire a ainsi été favorisée. Ces résultats ont permis d´approfondir la compréhension de la fragmentation tissulaire et des changements de texture au cours du procédé ce qui permettra de fournir des directives à l’industrie pour mieux gérer la diversité et l’hétérogénéité des fruits pendant le procédé de transformation des fruits en puréeThe objective of this thesis was to understand how structural characteristics in raw apples can be linked to structural factors in purees after cooking and tissue fragmentation. Structural characteristics of the fruit were modulated by cultivars, agricultural practices and maturation, and process conditions (thermal: 50–95 °C and mechanical: 100–3000 rpm) were modulated in a cooker-cutter during processing. Puree’s structure (volume occupied by particles, particle size, serum viscosity) and texture (viscosity, yield stress, G’ and G’’) were then analysed and compared between raw materials and process conditions. Pectins were extracted and their chemical composition and structure were correlated to puree’s structure. Particle size appeared to be the most important determinant of puree’s texture when there is no dilution or concentration of the fruit tissue. The extent of cell adhesion (defined by pectin structure and composition) determined particle size more than individual cell size (defined by varietal effects or agricultural practices). Other structural factors only contributed to puree’s texture once particle size was constant. Tissue fragmentation, determining particle size during processing, was principally affected by shear intensity. Post-harvest maturity of the raw apples and high temperatures (95 °C) induced pectin degradation, especially rhamnogalacturonan I side chain hydrolysis, and solubilisation. This led to reduced cell adhesion and tissue fragmentation was additionally favoured. The results deepened the understanding of tissue fragmentation and textural changes during processing and provided guidelines for industry to manage diversity and heterogeneity of raw fruits during processing
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Nguyen, Kim Thang. "Equilibres de nash pures : existance et inefficacité et enchères en ligne." Palaiseau, Ecole polytechnique, 2009. http://www.theses.fr/2009EPXX0017.
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MARIN, DOUGLAS. "Ecophysiologie de canavalia ensiformis (l. )dc. , en cultures pures et associees." Rennes 1, 1994. http://www.theses.fr/1994REN10196.
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Le developpement de la culture de canavalia ensiformis (l. )dc. , peut avoir un grand interet pour l'agriculture venezuelienne future, car il s'agit d'une espece riche en azote, tres tolerante aux conditions limitantes de climat et de sol, avec des rendements en matiere seche totale et en grains superieurs a ceux des autres legumineuses traditionnellement employees pour l'alimentation du betail. Canavalia pourrait se substituer partiellement a l'importation de soja pour l'elaboration des aliments concentres pour les animaux. Cette etude contribue a fournir des renseignements sur l'ecophysiologie de canavalia en culture pure et associee. Le travail utilise une demarche qui combine l'analyse de croissance et les observations phenologiques tout au long des cycles, ainsi que des mesures ponctuelles de la biomasse de mauvaises herbes, des variables liees au statut hydrique, a l'alimentation azotee et a l'interception de la lumiere ; en plus figure l'evaluation des rendements en grains avec comparaison des varietes en culture pure, et de l'espece associee a certaines plantes en c3 ou c4, economiquement importantes au venezuela
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Sisli, Zekiye. "Degradable Mulch Films For Agricultural Purposes." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12615022/index.pdf.
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The plastic mulch films, which are mostly made from LDPE, are used in order to increase the yields and to prevent the weed growth by covering the top of the soil by leaves or straw in nature. After a period, the mulch films turn into unmanageable quantities of soiled plastic films, which cause an environmental problem. Using degradable mulch films for agricultural purposes can be a solution for the environmental problems caused by the plastic mulch films.
In this study, to introduce biodegradability to mulch films, a natural biopolymer starch was used. Before blending, starch was transformed into thermoplastic starch in order to make the starch processable. The need, to provide adhesion and interaction between thermoplastic starch and LDPE, citric and stearic acid were considered as compatibilizers. To accelerate the degradation of the LDPE matrix, three pro-oxidants cobalt(II) acetylacetonate, iron(III) stearate and manganase(II) stearate were used.
The films prepared were characterized by FTIR spectroscopytheir thermal and mechanical properties were analyzed and buried under soil. The films recovered from soil after 76 days were characterized by FTIR spectroscopy, their weight loss were measured and their thermal and mechanical properties were analyzed. Studies showed that the use of cobalt(II) acetylacetonate gave improved results in terms of the mechanical properties and thermal stabilities of the films. Additionally, it is observed that the use of citric acid as a compatibilizer improved the thermal stabilities of starch in the films. Lastly, it is observed that the mechanical properties of the films were affected by the interactions between compatibilizers and pro-oxidants.
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Cako, Gezim. "TOOL DEVELOPMENT FOR TEST OPTIMIZATION PURPOSES." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-54935.
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Background: Software testing is a crucial part of the system's development life-cycle, which pays off in detecting flaws and defects, alternatively leading to high-quality products. Generally, software testing is performed manually by a human operator or automatically. While many test cases are written and executed, the testing process checks if all the requirements are covered, and the system exhibits the expected behavior. A great portion of the cost and time of the software development is spent on testing; therefore, considering the type of the software, test optimization is needed and presented as a solution in cost efficiency and time-saving. Aim: This thesis aims to propose and evaluate the improved sOrTES+ tool for test optimization purposes, consisting of selection, prioritization, and scheduling of the test cases integrated into a dynamic user interface. Method: In this thesis, test optimization is addressed in two aspects, low-level requirements and high-level requirements. Our solution analyzes these requirements to detect the dependencies between test cases. Thus, we propose sOrTES+, a tool that uses three different scheduling techniques: Greedy, Greedy DO(direct output), and Greedy TO(total output) for test optimization. The mentioned techniques are integrated into a dynamic user interface that allows testers to manage their projects, see useful information about test cases and requirements, store the executed test cases while scheduling the remaining ones for execution, and also switch between the mentioned scheduling techniques regarding the project requirements. Finally, we demonstrated its applicability and compared our tool with existing testing techniques used by our industrial partner, Alstom company, evaluating the efficiency in terms of requirement coverage and troubleshooting time. Results: Our comparison shows that our solution improves the requirement coverage, increasing it by 26.4% while decreasing the troubleshooting time by 6%. Conclusion: Based on our results, we conclude that our proposed tool, sOrTES+, can be used for test optimization and it performs more efficiently than the existing methods used by industrial partner Alstom company.
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Onor, Nta Ojang. "Should companies pursue corporate social responsibility?" Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/4528.
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There has been a long - standing argument on whether or not companies should be socially responsible. This is so because the primary objective of every company is to maximize profit for its shareholders, corporate social responsibility is therefore seen as a distraction. According to the leading proponent of this view Milton Friedman, 'the social responsibility of business is to increase its profits'i, but does society today stand to maximally benefit if the only concern of companies is to make a profit? Supporters of this view posit that companies involvement in projects not directly aimed at maximizing profit for its shareholders like corporate philanthropy and community development are unnecessary. They insist that issues like these should be left to the government and charities. On the contrary, society's present expectation of business covers a lot more than profit maximization; companies' involvement in corporate social responsibility is therefore the only way these expectations could be harnessed. Corporate social responsibility (CSR) is not only about philanthropy as some think, it involves the myriad ways firms integrate social, environmental and economic concerns into the day to day running of their companies. This essay stresses the need for companies' involvement in corporate social responsibility; it seeks to show that a socially responsible company does not only bring environmental and social benefits to the society at large, but also attracts financial benefits for the company involved. It goes further to suggest strategies that could be used to make companies more responsive to social needs than they presently are. The first chapter answers the question, what is corporate social responsibility? Many people and organizations have attempted defining this concept, but more often than not their views do not entirely reflect what corporate social responsibility is about because of the wide spectrum of issues it covers. To some people, corporate social responsibility is all about corporate philanthropy, to others it is more encompassing than that and is closely linked with principles of sustainable development. Although people look at CSR from different perspectives, what is generally agreed by all advocates of corporate social responsibility is that the management of companies should not only consider the interests of shareholders when running the company, but should take into account the welfare of other company stakeholders. Sustainable Development is defined by the United Nations Brundland Commission as 'development that meets the needs of the present without compromising the ability of future generations to meet their own needs'.ii The fact that CSR is voluntary leaves companies with discretion to be socially responsible or not. It is the voluntary nature of CSR that makes some people view CSR as basically corporate philanthropy. Those who see CSR as broader than philanthropy and linked with the principles of sustainable development argue that while philanthropy is absolutely discretionary,CSR is sustainable. While philanthropy involves how companies' profits are spent on deserving causes, CSR is concerned with how these profits are made in the first place. Proponents of CSR as an intrinsic part of sustainable development further argue that it is only when social accountability becomes an integral part of corporate conduct rather than a philanthropic add on, that the economic development of the private sector will move forward within an acceptable framework of public purposeiii This is my preferred notion of corporate social responsibility. Chapter one outlines the various definitions of corporate social responsibility. It looks at the relationship between corporate social responsibility and corporate governance and also gives an overview of the background influences of CSR. Chapter two examines the criticisms of corporate social responsibility and counters them. Chapter three presents the business case for corporate social responsibility; it seeks to show that socially responsible companies are not disadvantaged but enjoy numerous financial benefits. Chapter four suggests strategies that could be used to make companies more responsive to societal needs. Flowing from the fact that CSR is voluntary and some companies remain unresponsive to societal needs, regulation of aspects of CSR that cannot be left at the mercy of companies remains a way socially irresponsible companies would be compelled to comply. This chapter presents the arguments for and against legislation of CSR and suggests a balanced regulatory approach to corporate social responsibility.
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Tan, Shen Wen. "English for Occupational Purposes: Elastomer English." Kent State University Honors College / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors1463096101.
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Ying, Chen-Tsau Chris. "Backward simulation for production scheduling purposes /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487861396025914.
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Purser, Autun [Verfasser]. "Cold-Water Corals. Distribution of fauna and responses to environmental perturbation / Autun Purser." Bremen : IRC-Library, Information Resource Center der Jacobs University Bremen, 2010. http://d-nb.info/103503364X/34.
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Earhart, James J. "Desperately seeking Gerard Swope : the Clinton administration pursues a new capital-labor compact /." free to MU campus, to others for purchase, 2002. http://wwwlib.umi.com/cr/mo/fullcit?p3060094.
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Bouqueniaux, David. "Étude mécanistique du couplage oxydant du méthane sur zircones pures et dopées." Lille 1, 1995. http://www.theses.fr/1995LIL10035.
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Nous avons étudié des catalyseurs conducteurs ioniques de type zircones pures et dopées dans la réaction de couplage oxydant du méthane (c. O. M. ). La caractérisation par les techniques du potentiel de surface et de conductivité ionique a permis une compréhension des mécanismes réactionnels. Les tests catalytiques mettent en évidence l'influence bénéfique d'ajout de dopant y et ca au sein de la zircone, sur la sélectivité en éthane et en éthylène. La limitation cinétique hétérogène du rendement a été constatée en test catalytique et en potentiel de surface. En effet, les c#2, produits de la réaction, réagissent toujours plus rapidement que le méthane (réactif). Au niveau de la sélectivité de c#2h#6 et c#2h#4, on observe une inversion du produit majoritaire avec l'augmentation de température, phénomène qui se corrèle avec des mesures de potentiel de surface. Les résultats cinétiques ont permis de développer un modelé de réaction successive d'ordre 1 que nous avons applique aux catalyseurs étudiés. Il permet de calculer la sélectivité des produits c#2h#6, c#2h#4 et cox en fonction de la conversion en méthane et des rapports des constantes de vitesse = k#c#2#h#6/k#c#h#4 et = k#c#2#h#4/k#c#2#h#6. Nous avons également, en ce qui concerne l'oxygène, propose un modelé de mécanisme à deux sites qui rend compte des différents résultats obtenus.
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McCutcheon, David Matthew. "Machine augmented composite materials for damping purposes." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1521.
Full textAbstract:
In this study the energy dissipation performance of machine augmented composite
(MAC) materials is investigated. MAC materials are formed by inserting simple
machines into a matrix material. In this work the machines take the form of fluid filled
tubes, and the tube cross-sectional geometry induces fluid flow when it is deformed in its
plane. This flow dissipates mechanical energy, and thus provides the composite material
with attractive damping properties. The objective of this study is to gain insight into the
geometry, the material property combinations, and the boundary conditions that are
effective in producing high damping MAC materials. Particular attention is given to
tube geometry and to dimensionless parameters that govern the energy dissipation
efficiency of a MAC lamina. An important dimensionless parameter is the ratio of solid
elastic moduli to the product of the driving frequency and the fluid dynamic viscosity.
This is a measure of the ratio of elastic forces in the solid material to the viscous forces
in the fluid material that makes up a MAC lamina. Governing equations and simulation
methods are discussed. Simplified equations are derived to predict the pressure
generated when a tube/matrix cell is squeezed with zero pressure end conditions.
Transient, three dimensional finite element models are also used to predict the
performance of the damping MAC materials with zero pressure at the ends of the tubes.
For the geometry and material properties considered, the highest energy dissipation
efficiency predicted by these models is approximately 0.8 out of a maximum of 1.0.
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Busquets, Garcia Arnau 1985. "Targeting the endocannabinoid system for therapeutic purposes." Doctoral thesis, Universitat Pompeu Fabra, 2013. http://hdl.handle.net/10803/119617.
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The endocannabinoid system is an endogenous neuromodulatory system that regulates a plethora of physiological functions, including the modulation of memory, anxiety, pain, synaptic plasticity and neuronal excitability, among others. The activation of this system through exogenous or endogenous cannabinoid agonists has been proposed as a therapeutic strategy in different pathological states, although an important caveat to their use is the possible central adverse effects, such as memory impairment, anxiety and tolerance. The activity of the endocannabinoid system has been recently found involved in the pathophysiological conditions leading to obesity and fragile X syndrome, and the blockade of this system has also been investigated as a possible therapeutic approach. This thesis mainly focuses on the behavioral, paying more attention on the cognitive effects, cellular and molecular effects of exogenous and endogenous cannabinoids in order to identify potential therapeutic effects minimizing the negative consequences associated to the cannabinoid activation. This experimental research has been centered on the modulation of the positive and negative effects of Δ9-tetrahydrocannabinol, the main psychoactive component of the Cannabis sativa plant, the possibility to enhance the endogenous tone of specific endocannabinoids to improve certain therapeutic applications of cannabinoids, and the effects of inhibiting the endocannabinoid system in the amelioration of different traits associated to fragile X syndrome. The combination of behavioral, cellular and molecular approaches allowed the elucidation of different important aspects of the endocannabinoid system as an interesting therapeutic target.El sistema endocannabinoid és un sistema neuromodulador endogen que regula diferents funcions fisiològiques com la memòria, l’ansietat, el dolor i l’excitabilitat neuronal entre altres. L’activació d’aquest sistema per agonistes exògens o endògens ha estat usada com a estratègica terapèutica en diferents estats patològics tot i que els efectes adversos, com la pèrdua de memòria, l’ansietat o la tolerància, són el principal problema pel seu ús. El sistema endocannabinoid també s’ha trobat alterat en malalties com la obesitat o la síndrome del cromosoma X fràgil i, per tant, el bloqueig d’aquest sistema també s’ha emprat com a aproximació terapèutica. Aquesta tesis es centra en els efectes comportamentals i moleculars de l’administració exògena del Δ9-Tetrahydrocannabinol, el component principal de la planta Cannabis sativa, i en la modulació endògena del sitema endocannabinoid per tal de potenciar els efectes terapèutics minimitzant els efectes adversos dels cannabinoids. A més, en aquesta tesis també hem estudiat els posibles efectes terapèutics del bloqueig dels receptors cannabinoides en la síndrome del cromosoma X fràgil. La combinació d’aproximacions moleculars, farmacològiques, electrofisiològiques i comportamentals han permès el descobriment de diferents aspectes importants que permeten demostrar que el sistema endocannabinoid és una diana terapèutica molt interessant.
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Halsey, Jane Gassert. "Purposes for talk in nurse managers' meetings /." Thesis, Connect to this title online; UW restricted, 1991. http://hdl.handle.net/1773/8213.
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Di, Niro Gaetano. "Recycled aggregate concrete (RAC) for structural purposes." Thesis, University of Strathclyde, 1999. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21124.
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The possibility of using demolished concrete waste as aggregate in fresh concrete in the production of prestressed concrete beams is checked in this research. As opposed to the use for road foundations or as fill-in material the use of the Recycled Aggregate (RA) for concrete structures requires more tests and processing of results. In fact to be able to use a material for construction it is essential to assess more than just its compressive strength. After the physical and chemical characteristics of the RA and the properties of both the wet and hardened Recycled Aggregate Concrete (RAC) have been determined, it is important to check if the mathematical models and numerical correlation normally used for design of ordinary concrete (such as mix-design procedure, design codes, non-linear analysis) are suitable for RAC. For this reason the main task of this investigations has been to ensure that RAC has satisfactory mechanical performance for structural use and later to guarantee a consistency of the results using methods checked for RAC. A mix-design procedure suitable for RAC to attain the desired workability and the target strength was the first step. Tests on durability of RA and RAC have been performed and the results reported. Finally three 15.0 metres span prestressd beams cast with different percentages of RA (one with 100% of RA, one with 100% of Natural Aggregate NA, and one with 50% of RA and 50% of NA) have been tested. The results show that it is practicable to make prestressed concrete elements using concrete made with Recycled Aggregate and that these elements can have satisfactory and predictable mechanical performance.
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DeWilde, Stephen James. "Developing the DIN Database for Research Purposes." Thesis, St George's, University of London, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.498532.
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Liu, Shih-Yuan. "Collaborative Team Evasion Against a Faster Pursuer." Thesis, University of California, Berkeley, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3686396.
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In the past decade, the level of autonomy of unmanned vehicles has been rising rapidly from remote-controlled towards fully autonomous. Without human operators on board, teams of autonomous vehicles are the best candidates for high risk applications such as search and rescue after disasters and information gathering in hostile environments. For a team of autonomous vehicles to operate effectively in these scenarios, it must be able to respond promptly to environmental hazards and/or hostile entities. In this dissertation, a collaborative team evasion framework is proposed to maximize the survival time of a team of autonomous vehicles against a faster and more agile hostile agent. The proposed framework is based on an open-loop formulation of the single-pursuer-multiple-evader pursuit-evasion game that is conservative to the evaders and provides guarantees on team survival time in the worst-case scenario. An iterative open-loop approach that repeatedly solves the open-loop problem corresponding to the most current state of the game is developed to relax the conservatism of the open-loop formulation and enhance the survival time performance. Extensions to the framework make it possible to take into account the turning rate constraints of the evaders and uncertainties in the position of the pursuer. Numerical approximations are also proposed to reduced the required computation time. Through extensive simulations, the proposed framework is shown to produce reliable strategies for the evaders that result in significantly longer team survival time than previous work in the literature.
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Milne, James Stanley. "Modelling overall building behaviour for design purposes." Thesis, Heriot-Watt University, 1992. http://hdl.handle.net/10399/814.
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Longthorne, Darren Stuart. "Thieno-extended purines and related ring systems." Thesis, University of Salford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261839.
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Adams, Lauren. "Optimized Reservoir Management for Downstream Environmental Purposes." Thesis, University of California, Davis, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=10973511.
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In regulated rivers, reservoir operation decisions largely determine downstream river temperature and flow. Computational methods can minimize the risk and uncertainty of making regrettable environmental release decisions and aid operations planning and performance prediction. Mathematical modeling in particular can optimize the timing and magnitude of reservoir release decisions for downstream benefit while accounting for seasonal uncertainty, water storage impact, and competing water demands. This dissertation uses optimization and modeling techniques, modifying traditional optimization modeling to include temporal correlation in outcome variables and incorporating long-term planning and risk management into prescribed reservoir operations. The proposed method is implemented in one case, a) with a state variable that tracks outcome benefits over time (fish population size) and, in another case, b) with a maximin stochastic dynamic program solution algorithm that maximizes net operational benefit and minimizes worst-case outcomes (for cold water habitat delivery). This method is particularly useful for environmental flow management, when the water quality and quantity of the river and reservoir in one time step affect the quantity and quality in the reservoir and the river for later periods. Better solutions with these methods internalize risk and hedge releases at the beginning of an operating season to maximize downstream benefit and reduce the probability of catastrophe for the season and future years. Maximizing the minimum cold-water habitat area over months of a season or multiple years, or maximizing a river indicator variable explicitly, could likely help, for example, maximize an out-migrating salmon smolt population downstream. The method is demonstrated with a case study optimizing environmental releases from Folsom Dam and another optimizing temperature management from Shasta Dam in northern California. These results inform general rules for environmental flow management and temperature management of reservoirs, with specific policy recommendations for both Folsom and Shasta reservoirs. In both cases, the added value from employing hedging rules help reservoir operations minimize the risk of environmental catastrophe and conserve storage both within an operating season and across years.
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Ben-Asher, Joseph Z. "Optimal evasion against a proportionally guided pursuer." Thesis, Virginia Tech, 1986. http://hdl.handle.net/10919/51126.
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We consider the problem of optimal evasion when the pursuer is known to employ fixed gain proportional navigation . The performance index is a measure of closest approach. The analysis is done for planar motions at constant speed. The kinematics are first linearized around a nominal collision course. The dynamics of the opponents are modeled by first order systems and their accelerations may be bounded.
Three cases are studied: unconstrained optimal evasion (where the evader is not subjected to any path constraint) against a single pursuer, optimal evasion with a terminal path angle constraint for the evader and optimal evasion against more than one pursuer.
The optimal controls are shown to be 'bang - bang' with the number of switches depending on the pursuer’s navigation gain and on the particular constraints of each case.Master of Science
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Nguyen, Thi Phuong Thu. "Polymer and surface modifications for antibacterial purposes." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS449.
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La contamination microbienne des surfaces est l’une des préoccupations majeures des secteurs d’activités comme l’industrie agro-alimentaire, la santé publique et les milieux hospitaliers. Face aux problèmes de santé publique liés à contamination bactérienne sur les surfaces, la préparation de surfaces aux propriétés antibactériennes est devenue un intérêt de recherche majeur pour de nombreux scientifiques et ce, dans de nombreux domaines de recherches. Du point de vue de la chimie, des matériaux et de la microbiologie, la fonctionnalisation des surfaces de matériaux polymères préexistants sans altérer leur propriété initiale est une solution séduisante. Pour cela, développer des nouveaux matériaux antibactériens/antifouling où la surface serait fonctionnalisée par des polymères antimicrobiens, greffés de manière robuste i.e. de façon covalente représente une solution idéale. Afin de faciliter et d’accélérer le processus de criblage, il est proposé dans ce travail une nouvelle approche pour obtenir des polymères ayant des propriétés antimicrobiennes à la fois en solution et à partir de la surface. Ce travail comprend une étude de (co)-polymérisations contrôlées d'esters actifs servant d’intermédiaires pouvant être post-modifiés pour synthétiser des polymères d'intérêts présentant les caractéristiques antimicrobiennes attendues.Ce travail démontre que la polymérisation radicalaire contrôlée en présence de Cu(0)/Cu(II) est une technique appropriée qui permet de préparer facilement des (co)-polymères réactifs, en solution mais aussi à partir de surface de poly (téréphtalate d’éthylène), communément appelé PET. Dans un premier temps, nous aborderons l'étude de la polymérisation contrôlée du méthacrylate de pentafluorophényle (PFPMA), avec son optimisation en solution, puis à partir de surface du PET porteuse de groupement d’amorçage. De plus, la polymérisation du méthacrylate de p-nitrophényle (NPMA) sera également examinée, ainsi que la copolymérisation des deux esters actifs là-encore par polymérisation de type contrôlée en présence de Cu(0)/Cu(II). La post-modification des polymères activés est ensuite présentée. La post-modification s’est révélée efficace et facile à mettre en œuvre. La structure et les caractéristiques des polymères obtenus ont été analysées et confirmées. Il est à noter que la post-modification a pu être effectuée par un processus séquentiel avec une fonctionnalisation simple ou avec plusieurs huiles essentielles, qui possèdent des propriétés naturelles antibactériennes ou antioxydantes. Différents films de PET ont été modifiés, des polymères aux propriétés anti-adhérentes ont été greffés par cette même méthodologie. Ces surfaces modifiées ont été testées contre deux bactéries modèles telles que Staphylococcus aureus et Pseudomonas aeruginosa afin de déterminer si les modifications de surface ont conféré au film de PET les propriétés biologiques attenduesMicrobial contamination on surfaces has become major concern in various areas including industrial process as well as public health and hospitalization. Being aware of several problems causing by adherence and attachment of bacteria on a surface, preparation of antibacterial surface has become a global research interest for researchers in many domains. From the chemistry integrated with material science and microbiology point of view, functionalization of existing polymeric material surfaces is an attractive solution. In this domain, the surface functionalized with covalently grafted antimicrobial polymers represents an ideal solution. In order to facilitate the screening process, it is proposed in this particular research a new approach to obtain polymers with antimicrobial properties both in solution and from surface. The present approach includes a study in controlled (co)polymerization of active ester(s) serving as intermediate templates that can be eventually modified by polymer post-modification process to fabricate polymer of interest with expected antimicrobial characteristics.In general, it is demonstrated herein that the use of Cu(0)-mediated reversible deactivation radical polymerization (RDRP) is a suitable technique that allows facile preparation of reactive (co)polymers in solution and from surface of poly(ethylene terephthalate). First of all, this thesis focused on the study of controlled polymerization of pentafluorophenyl methacrylate (PFPMA) which appeared to be challenging. Furthermore, along with the optimization of polymerization in solution was the investigation of surface-initiated polymerization of this monomer from PET surface. Besides, polymerization of p-nitrophenyl methacrylate (NPMA) and copolymerization of the two active esters by Cu(0)-mediated RDRP were also examined. In addition, polymer post-modification of obtained (co)polymers with various compounds had been proven to be efficient, easy to perform. The structure and characteristics of obtained products were confirmed to match with expectations. It is remarkable that the post-modification can be done as sequential process, single or dual functionalization with several different essential oils, which are natural antibacterial or antioxidant compounds. On the other hand, the success in polymerization and post-modification of polymer of active esters in solution allowed the fabrication of different PET film grafted with polymers that are envisaged to have antiadhesion properties. Attempts to test such properties were also done against two model bacteria including Staphylococcus aureus and Pseudomonas aeruginosa to investigate if expectations are valid
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Verhulsdonck, Tijmen. "One Shot Object Detection : For Tracking Purposes." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-217252.
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One of the things augmented reality depends on is object tracking, which is a problem classically found in cinematography and security. However, the algorithms designed for the classical application are often too expensive computationally or too complex to run on simpler mobile hardware. One of the methods to do object tracking is with a trained neural network, this has already led to great results but is unfortunately still running into some of the same problems as the classical algorithms. For this reason a neural network designed specifically for object tracking on mobile hardware needs to be developed. This thesis will propose two di erent neural networks designed for object tracking on mobile hardware. Both are based on a siamese network structure and methods to improve their accuracy using filtering are also introduced. The first network is a modified version of “CNN architecture for geometric matching” that utilizes an a ne regression to perform object tracking. This network was shown to underperform in the MOT benchmark as-well as the VOT benchmark and therefore not further developed. The second network is an object detector based on “SqueezeDet” in a siamese network structure utilizing the performance optimized layers of “MobileNets”. The accuracy of the object detector network is shown to be competitive in the VOT benchmark, placing at the 16th place compared to trackers from the 2016 challenge. It was also shown to run in real-time on mobile hardware. Thus the one shot object detection network used for a tracking application can improve the experience of augmented reality applications on mobile hardware.
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Wills, Claire Louise. "Smoke, CO and CO2 evolution from fire retarded cable materials using the purser furnace." Thesis, University of Salford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491793.
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This thesis is concerned with the analysis of the main combustion products CO, CO2 and smoke from EVA nanocomposites, EVA and PVC cable materials under various ventilation conditions. Developed at Salford University this thesis describes attempts to improve and modify the Purser Furnace, by incorporation of a secondary oxidiser in order to facilitate the total carbon balance of the combustion, and a variable stepper motor to enable improved control over the fuel feed rate.
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Mokrushyna, Halyna. "The Gordian Knot of Past and Present: Memory of Stalinist Purges in Modern Ukraine." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/37974.
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The thesis examines the social memory of Soviet period in Ukraine on the national and regional levels drawing on the conceptual framework of social memory as shared, normative and formative knowledge of the past, subject to contentious interpretations of various groups and reflecting the power structure of the society. The analysis of the law on the rehabilitation of victims of political repressions in Ukraine, the law on the Holodomor as genocide against Ukrainian nation, and the decommunization laws shows that on the official level Ukraine moved from an ambivalent attitude towards the Soviet legacy, in which Stalinism was repudiated, to the condemnation of Soviet power as a whole.
On the regional level, the study reveals the divisive memory of the Soviet past. The analysis of the activities of the Memorial Society, of monuments to the prisoners executed in Lviv by retreating Soviets in June of 1941, of the Museum-Prison on Lontsky street and other museums and monuments shows that in Lviv, as in the Baltic States, the Soviet power is viewed as an alien regime, imposed on freedom-loving Ukrainians by Soviet Russia tyranny.
On the opposite side of Lviv is Donetsk. The analysis of the memorial landscape of the city shows that the Donbas memory of the 1930s, as in Soviet times and in Russia, is based on an official forgetting of the repressions. The general assessment of the Soviet past is positive is incorporated into the collective identity of Donetsk as its integral part.
After the Euromaidan events of late 2013-early 2014 the opposite memories of the Soviet past became even more apparent.
Soviet past in Ukraine is a complex historical period. Examples of post-second world war Western Europe shows that a society, which wants to rebuild itself after a traumatic, divisive past, has to work through this past critically and honestly through an extremely difficult, but necessary open public debate. Only free exchange of opinions, where diversity of perspectives and interpretations of the Soviet experience would be heard, will allow Ukrainian society to grasp the complexity of the Soviet past and to build an inclusive, pluralist democracy.
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Todd, James A. "Neither sword nor purse| The development of Supreme Court influence over lower courts." Thesis, The University of Alabama, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3711923.
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Lower court compliance with the superior courts is now a norm in the judicial system of the United States. This dissertation will examine the development of the Supreme Court's ability to influence the decisions by lower courts. My general theory is that lower court compliance with the Supreme Court became more of a certainty as the federal judicial system developed statutorily, particularly after 1875. I will test the impact that three judicial reforms had (and continue to have) on Supreme Court power over lower courts: the Jurisdiction and Removal Act of 1875, the Judiciary Act of 1891, and the Judges Act of 1925. These reforms, I will argue, added characteristics to the judicial system that help predict compliance, all of which are still present in the system and can be shown to have an effect on compliance in contemporary times. These characteristics include the availability of federal forums for the implementation of constitutional policies, the authoritative communication of Court policies by intermediate courts to trial level courts, and the ability of the Court to select cases that allow it the opportunity to announce clear policy.
To test my theory, I will use a variety of historically important Supreme Court policies and employ a coding scheme for lower court cases to test whether a case presents an instance of compliance or non-compliance with the specific Supreme Court policy.
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Cabou, Jérôme Brocard Jacques. "Synthèse d'une nouvelle classe de diphosphines ferrocéniques optiquement pures utilisation en catalyse asymétrique /." Villeneuve d'Ascq : Université des sciences et technologies de Lille, 2007. https://iris.univ-lille1.fr/dspace/handle/1908/181.
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Reproduction de : Thèse de doctorat : Chimie Organique et Macromoléculaire : Lille 1 : 2004.N° d'ordre (Lille 1) : 3524. Résumé en français et en anglais. Titre provenant de la page de titre du document numérisé. Bibliogr. p. 290-295.
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Simno, Claire D. "Hysteria, Greed, and the Public Purse: The Litigation Impacting a Local Governmental Agency." ScholarWorks@UNO, 2007. http://scholarworks.uno.edu/td/1081.
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This research is a case study of the litigation in progress by hundreds of St. Bernard Parish families against the Sewerage and Water Board of New Orleans and Browning Ferris Industries (BFI). The families are suing for personal and property damages sustained as a result of the poor operation and maintenance of the East Bank Sewerage Treatment Plant (EBSTP) and the Crescent Acres Landfill. The purpose of the study will be to examine the consequences, links, and process of interaction among three key units of analysis: the plaintiffs, their lawyers, and one of the major defendants in the litigation, the Sewerage and Water Board of New Orleans; and, three basic concepts related to each study group: the hysteria of the neighborhood, the greed of the lawyers, and the vulnerability of the public sector to litigation. I postulate that the plaintiffs' lawyers, originally retained to assist the neighborhood in their fight for closure of the landfill, became motivated by greed to expand the neighborhood fight and bring it to a more lucrative conclusion. By engaging their trust, the lawyers were able to organize the neighborhood and plant the seeds for mass psychogenic illness and neighborhood hysteria. The resulting litigation illustrates the vulnerability of the public sector to contrived litigation and the concomitant consequences to John Q. Citizen and the public purse. This research will contribute to our understanding of the concepts of greed and hysteria, will provide much needed insight on public service agency vulnerability, and will offer solutions to the problems encountered by public service agencies in providing legally mandated services.
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Medley, Paul Anthony Hassell. "Interaction between longline and purse seine in the south-west Pacific tuna fishery." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47571.
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Cabou, Jérôme. "Synthèse d'une nouvelle classe de diphosphines ferrocéniques optiquement pures : utilisation en catalyse asymétrique." Lille 1, 2004. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/2004/50376-2004-109-110.pdf.
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Les ligands ferrocéniques chiraux constituent l'une des plus grandes classes d'auxiliaires chiraux utilisés en catalyse asymétrique. Nous décrivons, ici,. La synthèse d'un nouveau groupe de diphosphines ferrocéniques. Ces ligands, dans lesquels les deux groupements phosphorés sont portés par les chaînes latérales greffées en positions 1 et 2 sur le noyau ferrocénique, sont synthétisés à partir de N,N-diméthylaminoéthylferrocène optiquement pur. Ces ligands ferrocéniques ont ensuite été testés en catalyse asymétrique. Parmi les réactions envisagées, l'hydrogénation de cétones prochirales par transfert d'hydrogène, a particulièrement retenu notre attention. Cette réaction de formation d'alcools secondaires chiraux est catalysée par le ruthénium, en présence d'isopropanol comme donneur d'hydrogène. À notre connaissance, cette étude constitue l'un des premiers exemples d'obtention d'un excès énantiomérique non négligeable (64 %) dans une telle réaction avec des diphosphines pour ligand.
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Azevêdo, Eduardo Ribeiro de. "Novas metodologias de ressonância magnética nuclear para o estudo da dinâmica lenta em materiais orgânicos no estado sólido: aplicações em polímeros e proteínas." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-21052007-093808/.
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RMN de Exchange em estado sólido é uma importante técnica utilizada na caracterização de processos dinâmicos em ciência dos materiais. Entretanto, a utilização desta técnica no estudo de materiais complexos tem sido limitada. Neste trabalho, serão propostas novas metodologias de RMN de Exchange em estado sólido, que permitem analisar eficientemente movimentos moleculares na escala de tempo de milisegundos. A técnica denominada Pure Exchange Solid-State NMR (PUREX), provê a supressão dos segmentos rígidos dos espectros de exchange, tomando possível observar os segmentos com mobilidade na escala de ms seletivamente. A técnica Centerband-Only Detection of Exchange (CODEX), permite a observação e caracterização de reorientações moleculares lentas com a maior sensibilidade e resolução disponíveis em RMN de estado sólido, através de espectros obtidos sob rotação da amostra em tomo do ângulo mágico (MAS). Utilizando essas técnicas as funções e tempos de correlação e a geometria de movimentos moleculares lentos podem ser determinadas diretamente, sem a necessidade da utilização de modelos que relacionem as grandezas medidas e as características do movimento molecular. A utilização dos métodos apresentados, permite a identificação e caracterização da dinâmica lenta em materiais complexos, tais como polímeros amorfos, semicristalinos e proteínas. Com objetivo inicial de demonstrar as técnicas, elas foram aplicadas para confirmar detalhes da dinâmica molecular em amostras modelo. Através destas técnicas foi possível confirmar a escala de tempo e os ângulos de reorientação envolvidos na dinâmica molecular de cristais orgânicos, Dimetil Sulfona (DMS), e também para revisitar processos de relaxação local em alguns polímeros, polimetacritato de metila (PMMA) e isotatico polipropileno (iPP). As metodologias foram também aplicadas no estudo da transição vítrea em polímeros semicristalinos, isotatico poli(1-buteno) (iPB 1) e sindiotático polipropileno, os quais não tinham sido ainda estudados por técnicas de RMN de Exchange, já que neste caso a maioria dos segmentos moleculares (porção cristalina do polímero) é rígida durante a transição vítrea. Utilizando os métodos CODEX e PUREX os movimentos lentos que ocorrem na região amorfa destes polímeros em temperaturas próximas as suas temperaturas de transição vítrea foram caracterizados. Um estudo dos movimentos lentos que ocorrem em tomo das temperaturas de transição vítrea nas cadeias poliméricas de dois tipos de nanocompostos híbridos siloxano/(polietileno glicol) (ormolitas) também é apresentado. Heterogeneidades nos movimentos das cadeias poliméricas associados com a interação PEG/siloxano foram diretamente observadas através de experimentos PUREX 1D de Exchange 2D. Evidenciais da presença de movimentos de grande e pequena amplitude foram observados para os dois tipos de híbridos. Os resultados revelam que a restrição do movimento das cadeias poliméricas pelas estruturas de siloxano depende tanto do comprimento da cadeia como da natureza das interações entre as fases orgânica e inorgânica do nanocomposto. Finalmente os resultados referentes a caracterização da dinâmica molecular rápida e lenta e sua relação com as propriedades estruturais de um hidrogel protéico são apresentados. Utilizando uma versão modificada da técnica CODEX, juntamente com experimentos de polarização direta, polarização cruzada e RMN de correlação 2D, foi possível não somente confirmar a estrutura e o modelo de formação propostos para o gel, mas também determinar a geometria e a escala de tempo dos movimentos lentos que ocorrem na região de hélice do hidrogel protéico em grandes detalhes. A demonstração teórica e experimental das técnicas e suas aplicações no estudo dessas importantes classes de materiais serão apresentadas.Solid-State Exchange NMR is an important method to characterize details of dynamic process in materials science. However, the application of these techniques to study complex materials has been limited. In this work new solid-state Exchange NMR techniques, which allows efficient analysis of molecular motions in the millisecond time scale, are presented. The Pure Exchange Solid-State NMR (PUREX) method provides the suppression of the rigid segments in standard exchange spectrum, making possible to observe the slow moving moieties selectively. The Centerband-Only Detection of Exchange (CODEX) technique allows observing and characterizing slow segmental reorientations with the highest available NMR sensitivity and site resolution, in a magic angle spinning (MAS) NMR spectrum. Correlation functions, correlation times and information about the motional amplitude and geometry can be direct1y obtained using the techniques, without any model assumption. These methods allowed identifying and characterizing slow dynamics in complex materials such as, semicrystalline and amorphous polymers and proteins. To demonstrated the proposed techniques they have been applied to confirm some kwon aspect of the slow dynamics of model samples. Using the methods it was possible o confirm the time scale and the reorientation angles involved in the molecular dynamics of organic crystals, Dimethyl Sulfone (DMS), and also to revisit some relaxation process in standard polymers, such as the beta relaxation of poly(methyl metacrylate) (PMMA) and the alfa relaxation in isotactic polypropylene (iPP). The time scale and the geometry of the molecular motions responsible by these relaxation process obtained using the PUREX and CODEX techniques are in excellent agreement with the data taken from the literature, confirming the reliability of the proposed methods. Moreover, the techniques were also applied to study the slow molecular motions involved in the glass transition of semicrystalline polymers, such as isotactic poly (l-butene) form I (iPB1) and syndiotactic Polypropylene (sPP). The glass transition of these polymers had not been studied using Exchange NMR methods because most of the molecular segments (crystalline portion of the polymers) are rigid during the glass transition. Using the PUREX and CODEX methods the slow molecular reorientations within the amorphous region of the polymers were characterized for temperatures near its glass transition. A study of the slow motions occurring around the glass transition temperature in the polymer chains of two types of siloxane/(polyethylene glycol) nanocomposites (ormolites) is also presented. Motional heterogeneities associated with PEG/ siloxane interactions were directly observed in the 13C 1D PUREX and 2D exchange data. Evidences of both small and large angle amplitude motions were direct1y observed for both types of hybrids. The results revealed that the hindrance to the slow molecular motions of the polymer chains due to the siloxane structures depends on the chain length and the nature of the interaction between the organic and inorganic phases. Finally the results concerning the characterization of the fast and slow dynamics and its relationship with the structural properties of a protein hidrogel are presented. Using a modified version of the CODEX technique, together with standard direct polarization, cross polarization and 2D NMR correlation experiments, it was possible not only to confirm the proposed structure and the gel formation model, but also to characterize the geometry and the time scale of the slow motions in the helical domains of the protein hidrogel in great detail. The theoretical and experimental demonstration of all proposed methods and also its applications in these important classes of material will be present.
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Braga, David Barroso. "A questÃo da afecÃÃo na crÃtica da razÃo pura." Universidade Federal do CearÃ, 2016. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=17816.
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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel SuperiorApesar da tese da afecÃÃo da faculdade sensitiva ser o ponto de partida da teoria dos objetos elaborada pelo filÃsofo alemÃo Immanuel Kant, na obra CrÃtica da razÃo pura, ela nÃo se coaduna pacificamente com a antropomorfizaÃÃo do conhecimento: se por um lado o homem conhece apenas objetos subordinados ao formalismo de sua estrutura, por outro precisa da afecÃÃo por objetos independentes desse formalismo para obter objetos. Noutros termos: se ele conhece apenas os objetos que se submetem ao seu modo de conhecer (fenÃmenos), entÃo nÃo pode dizer que à afetado por coisas independentes desse modo cognoscitivo (coisas em si), pois sÃo incognoscÃveis. Esta pesquisa pretende analisar tanto os elementos puros que o sujeito possui aprioristicamente, quanto os elementos impuros que ele adquire a posteriori com o objetivo de demonstrar que embora o conhecimento humano legÃtimo esteja restrito a um composto de elementos puros e impuros (a experiÃncia), ele exige o concurso de um terceiro elemento que à incognoscÃvel: a coisa em si. O resultado obtido desse estudo à que o conhecimento humano se apresenta dependente da tese da afecÃÃo, a qual encontra-se numa situaÃÃo problemÃtica. Conclui-se, entÃo, que mesmo o empreendimento kantiano sendo acusado de idealista, solipsista e de incidir em cÃrculo, ele encontra-se na verdade circunscrito numa estrutura aporÃtica: o homem nÃo pode conhecer as coisas em si mesmas, mas necessita que elas afetem o aspecto sensÃvel de sua estrutura para que a mesma possa ter objetos cognoscÃveis.
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Guillen, Quiroz Luis Max [UNESP]. "D=10 Super Yang-Mills, D=11 Supergravity and the Pure Spinor Superfield Formalism." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/144185.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
E bem conhecido como descrever as teor´ıas de Super Yang-Mills (SYM) ´ em D = 10 dimens˜oes e Supergravidade (SG) em D = 11 dimens˜oes no superespa¸co e via seus campos componentes. No entanto, uma nova vers˜ao desses modelos foi formulada nos finais da d´ecada de 2000, quando Martin Cederwall usando o formalismo de supercampo de espinor puro conseguiu construir uma pure spinor a¸c˜ao, que a diferen¸ca das anteriores abordagens, esta n˜ao precisa de impor constraints a m˜ao, proporciona uma descri¸c˜ao completa de cada modelo (no sentido do formalismo BV) e as equa¸c˜oes do movimento obtidas a partir do respectivo principio de a¸c˜ao s˜ao supersim´etricas. Neste trabalho iremos explicar toda a base necess´aria para entender a constru¸c˜ao de tal formalismo. Para esse prop´osito, come¸caremos estudando a teoria SYM (abeliana) em D = 10 em suas formula¸c˜oes em componentes e no superespa¸co. Usaremos a a¸c˜ao da formula¸c˜ao on-shell para quantizar a teoria via o formalismo de Batalin-Vilkovisky (BV). Seguiremos para SG em D = 11 e estudaremos suas formula¸c˜oes em componentes e no superespa¸co. Ent˜ao iremos mostrar que podemos obter o mesmo espectro f´ısico de SYM em D = 10 (SG em D = 11) estudando a superpart´ıcula em D = 10 (D = 11) na calibre do cone de luz. De forma a ter uma quantiza¸c˜ao covariante desses modelos, introduziremos a superpart´ıcula de espinor puro em D = 10 (D = 11), a qual possui o operador BRST usual de espinor puro (Q = λD). Verificar-se-´a que a cohomologia desse operador coincidir´a com a teoria SYM em D=10 (SG em D=11) linearizada depois de ser quantizada via o formalismo BV. Esse resultado introduzir´a naturalmente a ideia de construir a¸c˜oes usando um supercampo de espinor puro. Finalmente, explicaremos como o formalismo de supercampo de espinor puro surge nesse contexto e como podemos us´a-lo para construir a¸c˜oes manifestamente supersim´etricas para SYM em D=10 e SG em D=11.
It is well known how to describe the D = 10 (SYM) Super Yang-Mills and D = 11 (SG) Supergravity theories on superspace and by component fields. However, a new version of these models was formulated in the late 2000, when Martin Cederwall using the pure spinor superfield formalism achieved to construct a pure spinor action for these theories, which unlike the previously mentioned approaches, this does not require to impose any constraint by hand, provides a full description of each model (in the BV sense) and the equations of motion coming from the corresponding action principle are supersymmetric. In this work we will explain all the background required to understand the construction of this action. For this purpose, we will start with the D=10 (abelian) SYM theory in its component and superspace formulations. We will use the action of the on-shell formulation to quantize the theory via the Batalin-Vilkovisky framework. We will move to D=11 supergravity and study its component and superspace formulations. Then we will show that we can obtain the same physical spectrum of D = 10 SYM (D = 11 SG) by studying the D = 10 (D = 11) superparticle in the light-cone gauge. In order to have a covariant quantization of these models, we will introduce the D = 10 (D = 11) pure spinor superparticle, which possesses the usual pure spinor BRST operator (Q = λD). It will turn out that the cohomology of this operator will coincide with the linearized D = 10 SYM (D = 11 SG) theory after being quantized via BV-formalism. This result will introduce naturally the idea of constructing pure spinor actions. Finally, we will explain how the pure spinor superfield framework arises in this context and how we can use it to construct manifestly supersymmetric actions for D = 10 SYM and D = 11 SG.
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Lutun, Bernard. "1814-1817 ou L'épuration dans la Marine /." Paris ; Budapest ; Kinshasa [etc.] : l'Harmattan, 2005. http://catalogue.bnf.fr/ark:/12148/cb40119696j.
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Celebi, M. bahadir. "Radar Emitter Emulation For Research And Experimental Purposes." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12610847/index.pdf.
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The scope of this thesis is to implement radar emitter emulator in a low cost, portablehardware for operational and educational purposes. The model enables pulse train generation in real environment belonging to radar emitters for military exercises. The motivation comes from another research area which is to design effective algorithms for
deinterleaving mixed pulse sequences in a suitable hardware and this thesis, covers the work done for implementing a hardware that generates mixed pulse sequences. First of
all, a basic radar emitter model is built up using laboratory instruments by considering basic radar emitter models. Technical specs of these instruments have to be known well
to find out how many emitters can be emulated simultaneously and what the limits of these emulations are. After giving emulation results, trigging signal generator externally to obtain complex mixed pulse sequences is mentioned. In the following section related schematics are given about implementing radar emitters. Cost efficient way of emitter emulation is mentioned by using wideband RF synthesizer/VCO with integrated RF mixers and some microwave components in the following section. A board is designed including all required components to implement radar emitter emulation. Tests are implemented in laboratory environment. Finally test results and technical specifications
of the design are given. Also cost calculations of the implemented designs are done in the final section and some examples related to the use of emulators in environmental
scenarios are given. Future work is also explained again in this final section.