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Dissertations / Theses on the topic 'Transfer'

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Published: 4 June 2021
Last updated: 7 September 2024

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1

Pereira, Guillaume. "Synthèse de nouveaux polymères en étoile à coeur cyclodextrine." Thesis, Evry-Val d'Essonne, 2015. http://www.theses.fr/2015EVRY0005/document.

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Les cycles 1,2,3, triazoles sont facilement obtenus par réaction entre un azidure et un dérivé portant un alcyne mono ou disubstitué. Cette chimie click, issue d'une catalysé au cuivre permet d'accéder à la famille des 4-cholomethyl-1-(alkyl)-1H-1,2,3-triazoles susceptible de générer une espèce nucléophile permettant une réaction d'amorçage en polymérisation cationique des 2-alkyl-2-oxazolines. Trois types d'amorceurs ont été synthétisés afin d'obtenir différentes architectures de polymère tels les homopolymères à partir d'un amorceur modèle, un copolymère PEG-PMeOx est un polymère en étoile à coeur cyclodextrine avec 7 branches en PMeOx. Le spolymérisations avec l'amorceur modèle ont mis en évidence la réaction d'amorçage de polymérisation des 2-alkyl-2-oxazoline, sans pouvoir éviter des réactions de transfert spontanées ou au monomère. L'ajout de DTBP a permis d'améliorer le contrôle. La synthèse de copolymères PEG-PMeOx a été montrée par RMN DOSY et SEC. La synthèse de polymère en étoile a été conduite selon différentes méthodes. L'utilisation de dérivés de cyclodextrines portant des fonctions triazole s'est révélée un outil intéressant, mais n'a pas permis l'obtention de hautes masses molaires de polymères en étoile. D'autres méthodes ont permis d'atteindre cet objectif
The 1,2,3-triazole cycles are easily synthesized by the reaction between an azidure and a compound carrying an alkyne group mono-or disubstitued. Thos clock chemistry, with a copper catalysis leads to a family of 4-choloromethyl-1-(alkyl)-1H-1,2,3-triazole, susceptible to generate a nucleophilic specie. That allows an initiation reaction in cationic polymerization of 2-alkyl-2-oxazolines. Three kind of initiators habe been synthesized in order to obtain differenta rchitectures, as homopolymers from a model initiator, a PEG-PMeOx copolymer and a star polymer with cyclodextrin core and seven arms PMeOx. Polymerizations with model initiator highlighted initiation reaction of 2-alkyl-2-oxazolines polymerization, without being able to avoid reaction of spontaneous or monomer transfer. Addition of DTBP improves control. Synthesis of PEG-PMeOc has been proved by DOSY NMR and SEC. Synthesis of star polymer has been conducted according to different methods? The utilization of cyclodextrine derivatives with triazole functions is an interesting tool, but actually, we don't obtain high molar masses of star polymer. Other methods have been realized to reach this aim
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2

Sandgren, Julius. "Transfer Time Reduction of Data Transfers between CPU and GPU." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-205272.

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In real-time video processing data transfer between CPU and GPU is a time critical action; time spent transferring data is processing time lost. Several variants of standard transfer methods were developed and evaluated on nine computers and two smart decision algorithms was designed to help choose the fastest method for each occasion. Results showed that the standard transfer methods can be beaten; by using the designed decision algorithms, transfer times between CPU and GPU (both ways) can be reduced by a factor of 7 compared to always using the standard methods.
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3

Feng, Wu Xiao. "Asymmetric Transfer Hydrogenation & Transfer Hydrogenation in Water." Thesis, University of Liverpool, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.486307.

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Asymmetric transfer hydrogenation (ATH) has emerged as a practical, powerful alternative to asymmetric hydrogenation for the production of chiral alcohols, one of the most valuable intermediates in the synthesis of pharmaceuticals, flavour, aroma and agricultural chemicals, and speciality materials. However, the application of ATH has been hampered by its low TONs and TOFs in the past. On the other hand, enabling catalysis in water contributes to one of the most important and challenging fields of modem chemistry, green synthesis. As a solvent for organic reactions, water bears a number of attractive physical-chemical properties over traditional organic molecular solvents. A~ will be seen in the thesis, ATH in neat water has proved to be viable, affording chiral alcohols in fast rates, high productivity and high enantioselectivity. The reduction can be carried out with unmodified or tailor-made catalysts by using mild, readily available formate salt as reductant with no organic solvents required. A series of ligands (L =chiral diamine and its derivatives, amino alcohols) and metal complexes (those of Ru, Rh and Ir) have been explored for the ATH in water, and a wide range of ketones have been efficiently reduced to chiral alcohols (Scheme A-I.) Furthermore, for the PEG-supported catalyst, water as solvent, it can be very easy to separate the catalyst from the product by simple phase separation, which is a very important and ideal dream, especially in pharmaceutical applications. Aldehydes are hard to reduce successfully by TH catalysis in the solvent which is normally used for TH of ketones, such as refluxing 2-propanol, azeotropic formic acid and triethylamine mixture. However, this water-formate reducing system can also apply to the TH of aldehydes, furnishing highly chemoselectivity and remarkably fast reaction rate for the reduction of aldehydes. Thus, the in-water reduction provides a new method that is simple, economical and eco-friendly, and can be readily adapted for laboratory synthesis and commercial-scale production.
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4

Gesua', Sive Salvadori Davide <1993&gt. "Transfer pricing." Master's Degree Thesis, Università Ca' Foscari Venezia, 2017. http://hdl.handle.net/10579/10654.

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5

Grosu, Vicentiu. "Heat transfer analysis of nanosecond laser-induced forward transfer." Ann Arbor, Mich. : ProQuest, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3208002.

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Thesis (Ph.D. in Mechanical Engineering)--S.M.U.
Title from PDF title page (viewed July 6, 2007). Source: Dissertation Abstracts International, Volume: 67-02, Section: B, page: 1106. Adviser: David A. Willis. Includes bibliographical references.
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6

Haskins, Rebecca Jane. "Microelectrochemical studies of atom transfer and chain transfer catalysts." Thesis, University of Warwick, 2001. http://wrap.warwick.ac.uk/56114/.

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The purpose of the work described in this thesis was to measure standard electrode potentials and rate constants for various systems, based around cobalt and copper centred catalysts. The intention was to increase understanding of these two different types of complexes, with the knowledge described herein aiding in catalyst and system design. Two main techniques have been used, those of UME voltammetry and SECM. The UME measurements proved technically simple and were used to provide information on redox kinetics and coupled solution reactions. Conversely, the SECM experiments were more complex to perform but allow more complicated systems to be studied. The results obtained in Chapter 3 provide further information about the properties of [Cu] ATP catalysts. Enhanced information could be obtained with better knowledge of the values ofE1I2 or F!., but the work has shown that in organic solvents even simple parameters are difficult to obtain due to complexities such as ion pairing. The theme of Chapter 4; the reaction of [CUll] with Cu o had previously been unexamined. This reaction has been characterised and provides new information of the processes involved in adding Cu o to ATP reaction mixtures. A computer simulation was applied that described the theoretical behaviour of an oxidative etching event. A good fit was obtained between experiment and theory at large values of d/a and at short times. The potentials of a number of [CuI]/[CUIl ]and [Cul]/[CUO] redox couples have been measured in order to understand the substrate potential response during the SECM etching process. The rate of reaction of a number of different [COl] with E2mB has been measured in a range of solvents, as described in Chapter 5. The solvent was seen to have a great effect on the behaviour of each system, stabilising the formation of R[Colll ], such that two reduction processes became evident where mma was the solvent. Such [Co] species are commonly used as C - C bond forming reagents and therefore knowledge of their behaviour in certain solvents is invaluable. Additionally the [Colt E2mB system may be used as an initiator/catalyst system for polymerisation reactions, either in homogeneous or emulsion solutions.
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7

Hobbs, Stephen. "A pre-transfer assessment framework for international technology transfer." Thesis, University of Plymouth, 2002. http://hdl.handle.net/10026.1/664.

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The demands of managing in an international operating environment have changed considerably over the past 20 years due to developments in global markets. Multinational enterprises face fierce international competition and are now tasked not only with developing effective competitive capabilities but also with maximising the knowledge and expertise developed in one part of the organisation by transferring it to another. This work has investigated the position of multinational enterprises in the developing global market and through a broad and thorough review of current literature, identified a gap in the knowledge -a tool for helping the assessment of the transfer of technology prior to the transfer process taking place. Using existing models as a foundation, a new framework has been developed with observations from three case study organisations and the incorporation of other relevant literature. To -make use of the new framework to practitioners it leas been used as the basis of a workbook by which the anticipated difficulties can be judged and a priority focus developed. Validation of the 'r ework has been carried out by a panel of industrialists and academics experienced in international technology transfer. The thesis concludes with a series of recommendations for further work. The originality of this work lies in the development by the author of the new pre-transfer assessment Framework. This should provide clear advantages over previous approaches and give way to improving the success of technology transfer projects.
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8

Tran, Thu-Trang. "Electron and multielectron reaction characterizations in molecular photosystems by laser flash photolysis, towards energy production by artificial photosynthesis." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS320.

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La demande énergétique de l’humanité augmente rapidement et ne montre aucun signe de ralentissement. Parallèlement à cette problématique, l'utilisation abusive de combustibles fossiles est l'une des principales causes d'augmentation de la concentration de CO₂ dans l'atmosphère. Ces problèmes doivent être résolus en termes de limitation des émissions de CO₂ et de recherche de sources d'énergie renouvelables pour remplacer les combustibles fossiles. De nos jours, l’énergie solaire est l’une des sources d’énergie renouvelables les plus efficaces. La conversion de l'énergie de la lumière solaire en électricité dans le photovoltaïque ou en énergie chimique par le biais de processus photocatalytiques implique invariablement un transfert d'énergie photo-induit et un transfert d'électrons. Dans ce contexte, l'objectif de la thèse est d'étudier les processus photo-induits dans les photosystèmes moléculaires utilisant la photolyse par flash laser. Le premier thème de cette thèse porte sur l’étude du transfert monoélectronique dans des systèmes de dyades donneur-accepteur en vue d’optimiser l’efficacité de la séparation des charges et de son application dans la cellule solaire organique photovoltaïque. Le deuxième thème de cette thèse porte sur l’étude de deux systèmes modèles de photosynthèse artificielle étudiés pour la possibilité d’une accumulation de charge par étapes. Ensuite, différents systèmes photocatalytiques, développés pour la photoréduction du CO₂, ont été étudiés. La compréhension des processus photo-induits devraient permettre l’amélioration de l'efficacité de la réduction du CO₂ dans les systèmes photocatalytiques pratiques
The energy demand of humanity is increasing rapidly, and shows no signs of slowing. Alongside this issue, abuse using fossil fuels is one of the main reasons which leads to an increase in atmospheric CO₂ concentration. These problems have to be solved in terms of both limiting CO₂ emission and finding renewable energy sources to replace fossil fuels. Nowadays, solar energy appears as one of the most effective renewable energy sources. Conversion of solar light energy to electricity in photovoltaics or to chemical energy through photocatalytic processes invariably involves photoinduced energy transfer and electron transfer. In this context, the aim of the thesis focuses on studying photoinduced processes in molecular photosystems using laser flash photolysis. The first theme of this thesis focus on studying single electron transfer in Donor-Acceptor Dyad systems towards optimization efficiency of charge separation and application in the photovoltaic organic solar cell. In the second theme of this thesis, two model systems of artificial photosynthesis were investigated to assess the possibility of stepwise charge accumulation on model molecules. A fairly good global yield of approximately 9% for the two charge accumulation on MV²⁺ molecule was achieved. Then, different photocatalytic systems, which have developed for CO₂ reduction, were studied. Understanding of the photoinduced processes is an important step toward improving the efficiency of reduction of CO₂ in practical photocatalytic systems
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9

Chowdhury, Imran. "Scaling in social entrepreneurship : partnerships, knowledge transfer, and business models." Thesis, Cergy-Pontoise, Ecole supérieure des sciences économiques et commerciales, 2012. http://www.theses.fr/2012ESEC0002/document.

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L‟étude présentée ici tente d‟ouvrir une voie intermédiaire en s‟attachant au processus de transfert d‟innovation entre entrepreneurs sociaux. Nous appuyant sur la littérature sur la stratégie de transfert d‟innovation, qui cherche à développer une perspective globale des stratégies variées utilisées par les entreprises pour transférer des innovations efficacement, nous étudions ce processus de transfert dans un contexte d‟entrepreneuriat social, où l‟équilibre entre objectifs d‟efficience et objectifs sociaux plus larges est explicitement plus grand (Pache et Santos, 2010). Nous mettons ainsi en lumière le fait que certains organismes qui apparaissent et opèrent dans des contextes d‟échec simultané des marchés et des gouvernements axent leurs activités sur la création de valeur. S‟il est vrai que le transfert d‟innovation a le potentiel d‟ajouter de la valeur à toutes les entreprises, les divergences dans les objectifs organisationnels et les identités de celles-ci peuvent aboutir à des processus de transfert très différents, au fur et à mesure que l‟on passe de l‟entrepreneuriat commercial traditionnel à l‟entrepreneuriat social. Les travaux de recherche récents sur l‟entrepreneuriat social se sont centrés sur le besoin qu‟ont ces entrepreneurs d‟augmenter leur impact social en développant d‟avantage leurs opérations réussies (Bloom et Chatterji, 2009), mais le processus de transfert d‟innovations comme stratégie pour augmenter cet impact est mal connu. D‟autre part, la recherche sur le transfert d‟innovation ne s‟est quasiment pas penchée sur cette question, parce- qu‟elle n‟a pas envisagé comment des entrepreneurs qui veulent créer, et non capter, de la valeur s‟engagent dans le processus de transfert. L‟objectif de ce travail est d‟étudier comment les entrepreneurs sociaux gèrent le transfert d‟innovations et s‟organisent pour augmenter l‟impact de leurs innovations. Le sujet ne se limite donc pas aux mécanismes et aux résultats d‟un transfert, comme dans les études précédentes. Les questions posées ici ont pour but de comprendre comment les motivations des entrepreneurs sociaux, que l‟on considère comme différentes de celles des entrepreneurs plus traditionnels, influencent la façon dont se déroule le transfert d‟innovation. Pour ce faire, nous procédons d‟abord au réexamen des objectifs, du contexte, et du périmètre du transfert d‟innovations dans le cas d‟entreprises sociales
The purpose of this dissertation is to deepen the study of social entrepreneurship by examining how social entrepreneurs use partnerships and organize themselves to transfer knowledge. My research takes a first step towards building a theory of innovation transfer and scaling for social entrepreneurship. This study builds on three primary foundations. One is the literature on innovation transfer strategy, which seeks to develop a broad view of the various strategies used by firms to transfer innovations effectively. The second is the literature on social entrepreneurship, which highlights the value-creation focus of certain firms that emerge and operate where situations of simultaneous market and government failure exist. Third, I use the literature on institutions, in particular institutional logics, to explain how organizational processes impacted by multiple logics unfold. Using an inductive, multiple-case methodology, I illuminate the innovation transfer process as it relates to social entrepreneurs. My objective is threefold. First, I aim to understand how social entrepreneurs manage the innovation transfer process. Second, I wan to identify the crucial factors influencing innovation transfer between social entrepreneurs, distinguish these factors from those observed in more traditional settings, and examine their impact on the direction of the innovation transfer process. Third, and finally, I hope to offer possible alternative views to the discussion on “scaling” in the social sector, a debate which has, to date, focused on “scaling organizations” as the primary means to expand the scope and reach of innovations developed by social entrepreneurs
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10

Lu, Ying. "Transfer Learning for Image Classification." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEC045/document.

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Lors de l’apprentissage d’un modèle de classification pour un nouveau domaine cible avec seulement une petite quantité d’échantillons de formation, l’application des algorithmes d’apprentissage automatiques conduit généralement à des classifieurs surdimensionnés avec de mauvaises compétences de généralisation. D’autre part, recueillir un nombre suffisant d’échantillons de formation étiquetés manuellement peut s’avérer très coûteux. Les méthodes de transfert d’apprentissage visent à résoudre ce type de problèmes en transférant des connaissances provenant d’un domaine source associé qui contient beaucoup plus de données pour faciliter la classification dans le domaine cible. Selon les différentes hypothèses sur le domaine cible et le domaine source, l’apprentissage par transfert peut être classé en trois catégories: apprentissage par transfert inductif, apprentissage par transfert transducteur (adaptation du domaine) et apprentissage par transfert non surveillé. Nous nous concentrons sur le premier qui suppose que la tâche cible et la tâche source sont différentes mais liées. Plus précisément, nous supposons que la tâche cible et la tâche source sont des tâches de classification, tandis que les catégories cible et les catégories source sont différentes mais liées. Nous proposons deux méthodes différentes pour aborder ce problème. Dans le premier travail, nous proposons une nouvelle méthode d’apprentissage par transfert discriminatif, à savoir DTL(Discriminative Transfer Learning), combinant une série d’hypothèses faites à la fois par le modèle appris avec les échantillons de cible et les modèles supplémentaires appris avec des échantillons des catégories sources. Plus précisément, nous utilisons le résidu de reconstruction creuse comme discriminant de base et améliore son pouvoir discriminatif en comparant deux résidus d’un dictionnaire positif et d’un dictionnaire négatif. Sur cette base, nous utilisons des similitudes et des dissemblances en choisissant des catégories sources positivement corrélées et négativement corrélées pour former des dictionnaires supplémentaires. Une nouvelle fonction de coût basée sur la statistique de Wilcoxon-Mann-Whitney est proposée pour choisir les dictionnaires supplémentaires avec des données non équilibrées. En outre, deux processus de Boosting parallèles sont appliqués à la fois aux distributions de données positives et négatives pour améliorer encore les performances du classificateur. Sur deux bases de données de classification d’images différentes, la DTL proposée surpasse de manière constante les autres méthodes de l’état de l’art du transfert de connaissances, tout en maintenant un temps d’exécution très efficace. Dans le deuxième travail, nous combinons le pouvoir du transport optimal (OT) et des réseaux de neurones profond (DNN) pour résoudre le problème ITL. Plus précisément, nous proposons une nouvelle méthode pour affiner conjointement un réseau de neurones avec des données source et des données cibles. En ajoutant une fonction de perte du transfert optimal (OT loss) entre les prédictions du classificateur source et cible comme une contrainte sur le classificateur source, le réseau JTLN (Joint Transfer Learning Network) proposé peut effectivement apprendre des connaissances utiles pour la classification cible à partir des données source. En outre, en utilisant différents métriques comme matrice de coût pour la fonction de perte du transfert optimal, JTLN peut intégrer différentes connaissances antérieures sur la relation entre les catégories cibles et les catégories sources. Nous avons effectué des expérimentations avec JTLN basées sur Alexnet sur les jeux de données de classification d’image et les résultats vérifient l’efficacité du JTLN proposé. A notre connaissances, ce JTLN proposé est le premier travail à aborder ITL avec des réseaux de neurones profond (DNN) tout en intégrant des connaissances antérieures sur la relation entre les catégories cible et source
When learning a classification model for a new target domain with only a small amount of training samples, brute force application of machine learning algorithms generally leads to over-fitted classifiers with poor generalization skills. On the other hand, collecting a sufficient number of manually labeled training samples may prove very expensive. Transfer Learning methods aim to solve this kind of problems by transferring knowledge from related source domain which has much more data to help classification in the target domain. Depending on different assumptions about target domain and source domain, transfer learning can be further categorized into three categories: Inductive Transfer Learning, Transductive Transfer Learning (Domain Adaptation) and Unsupervised Transfer Learning. We focus on the first one which assumes that the target task and source task are different but related. More specifically, we assume that both target task and source task are classification tasks, while the target categories and source categories are different but related. We propose two different methods to approach this ITL problem. In the first work we propose a new discriminative transfer learning method, namely DTL, combining a series of hypotheses made by both the model learned with target training samples, and the additional models learned with source category samples. Specifically, we use the sparse reconstruction residual as a basic discriminant, and enhance its discriminative power by comparing two residuals from a positive and a negative dictionary. On this basis, we make use of similarities and dissimilarities by choosing both positively correlated and negatively correlated source categories to form additional dictionaries. A new Wilcoxon-Mann-Whitney statistic based cost function is proposed to choose the additional dictionaries with unbalanced training data. Also, two parallel boosting processes are applied to both the positive and negative data distributions to further improve classifier performance. On two different image classification databases, the proposed DTL consistently out performs other state-of-the-art transfer learning methods, while at the same time maintaining very efficient runtime. In the second work we combine the power of Optimal Transport and Deep Neural Networks to tackle the ITL problem. Specifically, we propose a novel method to jointly fine-tune a Deep Neural Network with source data and target data. By adding an Optimal Transport loss (OT loss) between source and target classifier predictions as a constraint on the source classifier, the proposed Joint Transfer Learning Network (JTLN) can effectively learn useful knowledge for target classification from source data. Furthermore, by using different kind of metric as cost matrix for the OT loss, JTLN can incorporate different prior knowledge about the relatedness between target categories and source categories. We carried out experiments with JTLN based on Alexnet on image classification datasets and the results verify the effectiveness of the proposed JTLN in comparison with standard consecutive fine-tuning. To the best of our knowledge, the proposed JTLN is the first work to tackle ITL with Deep Neural Networks while incorporating prior knowledge on relatedness between target and source categories. This Joint Transfer Learning with OT loss is general and can also be applied to other kind of Neural Networks
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11

Behbahani, Reza M. "Heat transfer and heat transfer fouling in phosphoric acid evaporators." Thesis, University of Surrey, 2003. http://epubs.surrey.ac.uk/842710/.

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The primary problem in concentrating phosphoric acid is due to fouling on the tube-side of the heat exchangers of the evaporators. Scaling on the heat transfer surfaces occurs because of high supersaturation of phosphoric acid liquor with respect to calcium sulfate. A review of the existing literature reveals that no information is available on heat transfer and on crystallisation fouling of phosphoric acid solutions. Solubility of calcium sulfate is very important with regards to the scaling problems in phosphoric acid concentration plants. Hence, the solubility of different calcium sulfate types in phosphoric acid solution was studied and their dependency on acid concentration and temperature were investigated. A large number of measurements of heat transfer coefficient for water and phosphoric acid solutions under forced convective, subcooled flow boiling and pool boiling conditions at different temperatures, flow velocities, heat fluxes and concentrations were performed. The results show that the modified Gnielinski and Petukhov and Popov con-elations fit the experimental results for forced convective heat transfer to phosphoric acid solutions better than the other correlations. The Chen model and associated correlations were found suitable for the prediction of subcooled flow boiling heat transfer coefficients for phosphoric acid solutions. Applying the actual temperature driving force (Tw-Ti) instead of (Tw-Tb), a theoretical model was proposed, which permits the prediction of pool boiling heat transfer coefficients of phosphoric acid solutions with good accuracy. A large number of fouling experiments were carried out at different flow velocities, surface temperatures and concentrations to determine the mechanisms, which control deposition process. After clarification of the effect of operational parameters on the deposition process, a mathematical model was developed for prediction of fouling resistance. The activation energy evaluated for the surface reaction of the deposit formation was found to be 56,829 J/mol. The predicted fouling resistances were compared with the experimental data. Quantitative and qualitative agreement for measured and predicted fouling rates, is good. Also, a kinetic model for crystallization fouling was developed, using the field data. The predictions of the suggested model are in good agreement with the plant operating data. Finally, a numerical model was developed for computer simulation of shell and tube heat exchangers. The agreement between the field data and the prediction of the model was very satisfactory.
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12

Pavlyuk, Yuri. "Application of static transfer switch for induction motor load transfer." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0022/MQ51612.pdf.

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13

Hamilton, David Jonathan. "Polarisation transfer in proton Compton scattering at high momentum transfer." Thesis, University of Glasgow, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.410653.

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14

Ellnefjärd, André. "Diagnostic of sensors, transfer pipes, filters, transfer- and feed- pumps." Thesis, KTH, Maskinkonstruktion (Inst.), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-168842.

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Under de senaste åren så har kraven på olika systems körtid och tillförlitlighet ökat inom industriella applikationer. Diagnossystem har därför blivit alltmer viktiga för att se till att systemen körs normalt och säkert, för att förhindra eventuella systemfel. Ett nytt systemkoncept har nyligen tagits fram för lågtryckdelen av bränslesystemet på tunga motorer och detta system är i behov av ett diagnossystem.I detta examensarbete så har man undersökt hur systemets utformning och diagnosalgoritmer skall se ut för att man ska kunna upptäcka felaktigt fungerande systemnivåer och kunna isolera felaktiga komponenter. Med systemets utformning menas antalet sensorer, deras placering och nödvändig upplösning.Fyra systemutformningar har föreslagits och testats i en rigg som tagits fram i detta examensarbete. Utifrån dessa data så har det normala och det felaktiga beteendet definierats och utvärderats. Feldetektering- och isolerings- metoderna som tagits fram utnyttjar teori såsom fysikalisk redundans, filtrering av signaler, FFT, kombinationer av detektionsgränser, insvängningstid/stigtid samt enklare residualer. Dessa metoder har sedan kombinerats till ett diagnossystem för respektive system utformning. En jämförelse mellan de olika systemutformningarna med avseende på diagnosprestanda och systemkostnad har sedan utförts.Resultaten visade att två av de framtagna systemutformningarna med motsvarande diagnosalgoritmer var överlägsna de andra två systemutformningarna när det gäller prestanda och enkelhet för diagnosen. De olika givarnas upplösningar har visat sig ha ett stort inflytande på vilken felstorlek som kan och inte kan upptäckas, därför har också krav på nya sensorer föreslagits och diskuterats. Den slutliga och valda systemutformningen påvisar att det är teoretiskt möjligt att kunna detektera och isolera alla systemfel som definierats. De föreslagna lösningarna behöver implementeras och verifieras innan diagnosen kan anses slutgiltigt verifierad.
During the later years, demands on the requirements such as system up-time and system reliability have been increased in industrial applications. Diagnostic systems have therefore become of importance to ensure that the system runs normal and safe in order to prevent possible system failures. A new system concept for the low pressure fuel circuit in heavy duty engines has recently been developed and it is in the need of a diagnostic system.This master thesis investigates how the system layout and diagnostic algorithms of the new system concept shall be designed to be able to detect a faulty functioning system level and isolate failing components. The system layout is referring to the amount of sensors, their locations and their needed resolutions.Four system layouts has been suggested and tested in a developed experimental rig where normal and faulty system behavior has been defined and evaluated. Fault detection and isolation methods that utilizes physical redundancy, filters, FFT, combinations of detection limits, settling time/rise time and residuals, has been developed and combined into a diagnostic system for each system layout. A comparison between the system layouts with respect to diagnostic performance and system cost was in turn performed.The results showed that two of the system layouts with corresponding diagnostic algorithms were superior to the two other layouts in terms of diagnostic simplicity and diagnostic performance. The sensor resolutions were proven to have a big influence on what fault sizes are detectable or not which is why new sensor requirements has been suggested and discussed. The final system layout with corresponding diagnostic algorithm is theoretically capable of detecting and isolating all of the defined system faults. It is however in the need of implementation and verification to be considered validated.
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15

Macbeth, Tyler James. "Conjugate Heat Transfer and Average Versus Variable Heat Transfer Coefficients." BYU ScholarsArchive, 2016. https://scholarsarchive.byu.edu/etd/5801.

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An average heat transfer coefficient, h_bar, is often used to solve heat transfer problems. It should be understood that this is an approximation and may provide inaccurate results, especially when the temperature field is of interest. The proper method to solve heat transfer problems is with a conjugate approach. However, there seems to be a lack of clear explanations of conjugate heat transfer in literature. The objective of this work is to provide a clear explanation of conjugate heat transfer and to determine the discrepancy in the temperature field when the interface boundary condition is approximated using h_bar compared to a local, or variable, heat transfer coefficient, h(x). Simple one-dimensional problems are presented and solved analytically using both h(x) and h_bar. Due to the one-dimensional assumption, h(x) appears in the governing equation for which the common methods to solve the differential equations with an average coefficient are no longer valid. Two methods, the integral equation and generalized Bessel methods are presented to handle the variable coefficient. The generalized Bessel method has previously only been used with homogeneous governing equations. This work extends the use of the generalized Bessel method to non-homogeneous problems by developing a relation for the Wronskian of the general solution to the generalized Bessel equation. The solution methods are applied to three problems: an external flow past a flat plate, a conjugate interface between two solids and a conjugate interface between a fluid and a solid. The main parameter that is varied is a combination of the Biot number and a geometric aspect ratio, A_1^2 = Bi*L^2/d_1^2. The Biot number is assumed small since the problems are one-dimensional and thus variation in A_1^2 is mostly due to a change in the aspect ratio. A large A_1^2 represents a long and thin solid whereas a small A_1^2 represents a short and thick solid. It is found that a larger A_1^2 leads to less problem conjugation. This means that use of h_bar has a lesser effect on the temperature field for a long and thin solid. Also, use of ¯ over h(x) tends to generally under predict the solid temperature. In addition is was found that A_2^2, the A^2 value for the second subdomain, tends to have more effect on the shape of the temperature profile of solid 1 and A_1^2 has a greater effect on the magnitude of the difference in temperature profiles between the use of h(x) and h_bar. In general increasing the A^2 values reduced conjugation.
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Brignoni, Jimmy. "Modelling transfer processes /." [S.l.] : [s.n.], 2009. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.

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Wullschleger, Jürg. "Oblivious-transfer amplification /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17125.

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18

Mohideen, Mohamed Farhaan. "Charge transfer process." Thesis, Staffordshire University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246022.

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19

Shen, Tianxiao. "Language style transfer." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/117822.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2018.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 41-45).
This thesis studies style transfer on the basis of non-parallel text. This is an instance of a broad family of problems including machine translation, decipherment, and attribute modication. The key challenge is to separate the content from style in an unsupervised manner. We assume a shared latent content distribution across different text corpora, and propose a method that leverages refined alignment of latent representations to perform style transfer. The transferred sentences from one style should match example sentences from the other style as a population. To demonstrate the flexibility of the proposed model, we test it on three tasks: sentiment modication, decipherment of word substitution ciphers, and word order recovery. In both automatic and human evaluation our method achieves strong performance.
by Tianxiao Shen.
S.M.
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20

Raghuraman, Srinivasan. "Network oblivious transfer." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/112047.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2017.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 63-67).
Motivated by the goal of improving the concrete efficiency of secure multiparty computation (MPC), we study the possibility of implementing an infrastructure for MPC. We propose an infrastructure based on oblivious transfer (OT), which would consist of OT channels between some pairs of parties in the network. We devise information-theoretically secure protocols that allow additional pairs of parties to establish secure OT correlations using the help of other parties in the network in the presence of a dishonest majority. Our main technical contribution is an upper bound that matches a lower bound of Harnik, Ishai, and Kushilevitz (Crypto 2007), who studied the number of OT channels necessary and sufficient for MPC. In particular, we characterize which n-party OT graphs G allow t-secure computation of OT correlations between all pairs of parties, showing that this is possible if and only if the complement of G does not contain the complete bipartite graph K[subscript n-t,n-t] as a subgraph.
by Srinivasan Raghuraman.
S.M.
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21

Azzam, Ziad J. (Ziad Jamil). "Neutron transfer reactions." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/36426.

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Shell, Jethro. "Fuzzy transfer learning." Thesis, De Montfort University, 2013. http://hdl.handle.net/2086/8842.

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The use of machine learning to predict output from data, using a model, is a well studied area. There are, however, a number of real-world applications that require a model to be produced but have little or no data available of the specific environment. These situations are prominent in Intelligent Environments (IEs). The sparsity of the data can be a result of the physical nature of the implementation, such as sensors placed into disaster recovery scenarios, or where the focus of the data acquisition is on very defined user groups, in the case of disabled individuals. Standard machine learning approaches focus on a need for training data to come from the same domain. The restrictions of the physical nature of these environments can severely reduce data acquisition making it extremely costly, or in certain situations, impossible. This impedes the ability of these approaches to model the environments. It is this problem, in the area of IEs, that this thesis is focussed. To address complex and uncertain environments, humans have learnt to use previously acquired information to reason and understand their surroundings. Knowledge from different but related domains can be used to aid the ability to learn. For example, the ability to ride a road bicycle can help when acquiring the more sophisticated skills of mountain biking. This humanistic approach to learning can be used to tackle real-world problems where a-priori labelled training data is either difficult or not possible to gain. The transferral of knowledge from a related, but differing context can allow for the reuse and repurpose of known information. In this thesis, a novel composition of methods are brought together that are broadly based on a humanist approach to learning. Two concepts, Transfer Learning (TL) and Fuzzy Logic (FL) are combined in a framework, Fuzzy Transfer Learning (FuzzyTL), to address the problem of learning tasks that have no prior direct contextual knowledge. Through the use of a FL based learning method, uncertainty that is evident in dynamic environments is represented. By combining labelled data from a contextually related source task, and little or no unlabelled data from a target task, the framework is shown to be able to accomplish predictive tasks using models learned from contextually different data. The framework incorporates an additional novel five stage online adaptation process. By adapting the underlying fuzzy structure through the use of previous labelled knowledge and new unlabelled information, an increase in predictive performance is shown. The framework outlined is applied to two differing real-world IEs to demonstrate its ability to predict in uncertain and dynamic environments. Through a series of experiments, it is shown that the framework is capable of predicting output using differing contextual data.
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SPEARMAN, JOEL. "INTERACTION THROUGH TRANSFER." University of Cincinnati / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1186089394.

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Kagelmacher, Falk. "Technology transfer centre." Thesis, Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25948714.

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Taylor, Nicholas. "Borane transfer reactions." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/22027.

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Lewis base borane adducts (LB·BH3) constitute a well-known class of molecules with a number of diverse applications, including use as protected phosphines. The kinetics and thermodynamics of borane transfer reactions from a wide range of Lewis base borane complexes have been studied. The data generated has been used both as a quantitative tool to describe the nucleofugality (leaving group ability) of Lewis bases and as a means to improve the efficiency of phosphine borane deprotection reactions. The kinetics of borane transfer from a range of tertiary phosphine borane complexes to a wide range of amines have been determined. All kinetic data obtained, in addition to computational evidence, are consistent with a direct (SN2-like) mechanism, rather than a dissociative (SN1-like) process. The identities of the amine, phosphine and to a lesser extent solvent, impact substantially on the rate and equilibrium of the transfer, which can span several orders of magnitude. In depth structure activity relationships have been explored both for a wide variety of amine nucleophiles and phosphine nucleofuges. Taken as a whole, the data allow informed optimisation of the “deprotection” of a phosphine borane complex from the standpoint of rate or synthetic convenience. Additionally, the kinetics of ethanolysis of tri(o-tolyl)phosphine borane complex have also been studied. Using bridgehead amine quinuclidine as a benchmark, the kinetics of borane transfer from a wide range amine borane adducts have also been determined. Parameterisation of these data, in addition to that obtained for the analogous phosphine borane complexes, has allowed development of a novel nucleofugality scale (NFB) that quantifies the leaving group ability of a wide range of Lewis bases. Additivity in the kinetics across a series R3−nR’nX·BH3 (X = P, N; R/R’ = aryl, alkyl) has led to the formulation of related substituent parameters (nf PB, nfAB) that quantify the nucleofugal influence of a substituent. Using the substituent nucleofugality parameter in concert with additivity provides a mean of calculating ligand nucleofugality (NFB) values for a wide range of Lewis bases that extends far beyond those experimentally derived. Good agreement was found between predicted (using NF B and nFB values) and experimental rates of borane transfer for ligands outside the training set, thus providing a means to predict the relative rate of phosphine borane deprotections. The utility of both parameters was demonstrated through correlations to rates of redox transformations at iridium (bearing phosphine spectator ligands) and MIDA boronate hydrolysis, (MIDA = N-methyliminodiacetic acid). Through these correlations, interesting subtleties in the mechanism of MIDA boronate hydrolysis have been identified.
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Wang, Xiaoyan, and Parthkumar Patel. "Transfer Mold Design." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-39904.

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The following report conducted with the collaboration with the University of Halmstad and Halmstad Gummi Fabric (HGF) rubber company which is in Halmstad. The focus on the project is to reduce the cost of the transfer mold material, increase efficiency of production, save energy and redesign the transfer mold. The methodology used in this project is based on the Quality Functional Deployment (QFD) which is widely appreciated globally in the product development, and other product development and mold design methods, FEM analysis are applied to achieve the goals. The implementation of this methods is efficient and beneficial to reduce the material cost and redesign the transfer mold without compromising the initial quality of the product. This thesis resulted in, for the transfer molding plates we recommended the proper material for the plates and the insulation parts. And we redesign the transfer mold plates and optimized the design for reducing the cost. We did FEM analysis for optimization purpose, and the benefits to optimizing this is to reduce the material cost, machining cost and labour cost. As well as, we add the insulation plates in the design so that the transfer molding plates works efficiently with the reducing the energy wastes.
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Roth, Eric. "Transient heat transfer." PDXScholar, 1991. https://pdxscholar.library.pdx.edu/open_access_etds/4264.

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With the advent of the new high Tc superconductors, liquid nitrogen will be one of the preferred cryogens used to cool these materials. Consequently, a more thorough understanding of the heat transfer characteristics of liquid nitrogen is required. In our investigations we examine the transient heating characteristics of liquid nitrogen to states of nucleate and film boiling under different liquid flow conditions. Using a platinum hot wire technique, it is verified that there is a premature transition to film boiling in the transient case at power levels significantly lower than under steady state nucleate boiling conditions. It is also shown that the premature transition can be reduced or eliminated depending on the flow velocity.
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Xu, Feishi. "Bubble hydrodynamics and mass transfer in complex media." Thesis, Toulouse, INSA, 2019. http://www.theses.fr/2019ISAT0003.

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La connaissance du comportement hydrodynamique et du transfert de matière de la bulle est importante car elle fournira des indications pour la sélection des conditions de fonctionnement et la conception du réacteur dans de tels processus. Cette thèse a réalisé une étude expérimentale pour les bulles d’air isolées en ascension dans diverses solutions de polymères (Breox, Polyacrylamide (PAAm) and Xanthan gum) qui peuvent simuler les propriétés des eaux usées. Les travaux sont divisés en trois parties: Tout d’abord, en dressant l’état de l'art sur les techniques de visualisation pour le transfert de matière, trois techniques ont été testées pour les bulles d’air (diamètre équivalent ≈ 1 mm) en ascension dans l'eau, notamment la fluorescence induite par plan laser (PLIF, fluorophore: résorufine fluorescente), la PLIF avec inhibition (fluorophore: complexe de ruthénium) et techniques colorimétriques (colorant: résorufine rose), respectivement. Par la suite, sur la base des images capturées par une caméra haute vitesse, le comportement hydrodynamique des bulles d'air (diamètres équivalents: 0,7 à 7 mm) s'élevant dans les solutions de polymères (PAAm et Xanthan) a été étudiée, notamment la vitesse, la trajectoire et la forme de la bulle. Enfin, appliquant la technique PLIF-I, les phénomènes de transfert de matière et de diffusion dans le sillage de bulles d'air (diamètre équivalent 1 ≈ mm) dans différentes solutions aqueuses de polymères (PAAm et Breox) ont été étudiés
The knowledge on the hydrodynamic property and mass transfer of bubbles is important since it will give guidelines for selecting the operation condition and for reactor design in such processes. For this purpose, this PhD manuscript has implemented an experimental investigation of single air bubbles rising in various polymer solutions (Breox, Polyacrylamide (PAAm) and Xanthan gum) which can simulate the property of the sewage. The works can divided into three parts: Firstly, with a review of the current visualization techniques for mass transfer, three techniques have been tested for air bubble (equivalent diameter ≈ 1 mm) rising in water including traditional Planar Laser Induced Fluorescent (PLIF, dye: fluorescent resorufin), Fluorescent quenching technique (PLIF with Inhibition, dye: ruthenium complex) and colorimetric techniques (dye: pink resorufin), respectively. Secondly, based on images captured by a high speed camera, the hydrodynamics of the bubble single air bubbles (equivalent diameters: 0.7-7 mm) rising in the polymer solutions (PAAm and Xanthan) have been investigated including the bubble velocity, trajectory and bubble shape. Finally, based on PLIF-I technique, the mass transfer and diffusion phenomena in the wake of single air bubbles (equivalent diameter ≈ 1 mm) rising in various aqueous polymer solutions (PAAm and Breox) are investigated
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Moore, Evan Guy. "A macrocyclic scaffold for electronic energy transfer and photoinduced electron transfer /." St. Lucia, Qld, 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17983.pdf.

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Niu, Bingyu, and Sisi Yan. "Knowledge transfer in project-based environments : The barriers of knowledge transfer." Thesis, Linköpings universitet, Företagsekonomi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-78792.

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Background: Nowadays, projects become the common way of working in manycompanies. Knowledge management is important for efficient project management.Knowledge transfer in project-based environments became an attractive and importanttopic for study. Various barriers and challenges will appear during the process ofknowledge transfer in projects. Lots of authors thought the barriers of knowledgetransfer in project are negative, while others mentioned that some barriers may havepositive aspects. We called these two kinds of barriers “positive barriers” and“negative barriers” in this thesis. Purpose: The purpose of this thesis is to understand knowledge transfer inproject-based environments. Specifically, we aim to explain that barriers ofknowledge transfer in projects can be both negative and positive. Method: Due to the special time period and activity limitation, we chose case studyto gain the empirical data. When choosing the sample, we used the conveniencesampling. The sample chosen is a project team in Ericsson of Linköping. The projectmanager we interviewed has worked in Ericsson since 2004 and with his presentproject team for four years. He has already done more than fifteen projects, so he hasenough experience in projects for our study. We combined both inductive anddeductive approach strategies to analyze our thesis. Result: This thesis has answered the questions in the part of specified questions andreached the thesis purpose. It has explained the notion of knowledge transfer inprojects and its related barriers. It interprets how both negative and positive barriersaffect knowledge transfer. Furthermore, this thesis points out some suggestions forimproving positive barriers and reducing negative barriers.
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Fang, Xin. "Reliable file transfer on the Internet using distributed file transfer, DFT." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ57539.pdf.

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32

Quan, Xu. "Hydrogenation, Transfer Hydrogenation and Hydrogen Transfer Reactions Catalyzed by Iridium Complexes." Doctoral thesis, Stockholms universitet, Institutionen för organisk kemi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-119701.

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The work described in this thesis is focused on the development of new bidentate iridium complexes and their applications in the asymmetric reduction of olefins, ketones and imines. Three new types of iridium complexes were synthesized, which included pyridine derived chiral N,P-iridium complexes, achiral NHC complexes and chiral NHC-phosphine complexes. A study of their catalytic applications demonstrated a high efficiency of the N,P-iridium complexes for asymmetric hydrogenation of olefins, with good enantioselectivity. The carbene complexes were found to be very efficient hydrogen transfer mediators capable of abstracting hydrogen from alcohols and subsequently transfer it to other unsaturated bonds. This hydrogen transferring property of the carbene complexes was used in the development of C–C and C–N bond formation reactions via the hydrogen borrowing process. The complexes displayed high catalytic reactivity using 0.5–1.0 mol% of the catalyst and mild reaction conditions. Finally chiral carbene complexes were found to be activated by hydrogen gas. Their corresponding iridium hydride species were able to reduce ketones and imines with high efficiency and enantioselectivity without any additives, base or acid.

At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 5: Submitted. Paper 6: Manuscript.

 

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Chalfoun, David Joseph. "Acyl transfer to lysine : an investigation acyl transfer across large rings." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/38769.

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34

Tuttle, Shannon Nicole. "Transfer in the Writing Center: Tutors Facilitating Students' Understanding of Transfer." BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/8548.

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Transfer, a highly researched topic in composition studies, is a topic of increasing interest to those in writing center studies. Writing centers are an ideal location for the application of transfer because tutors can provide more opportunities for guided practice, application, reflection, and metacognition in a one-on-one setting; thus, students may learn more effectively, through application, the writing skills they may receive via instruction in their classrooms. Previous writing center studies have implemented transfer-focused curricula to help tutors better facilitate transfer in their tutorials. These curricula have focused on training tutors to understand and apply transfer to their tutorials, but they have not invited tutors to assess how transfer has impacted or influenced their previously learned tutoring strategies. Though researchers have lectured on transfer, incorporated activities to increase understanding of transfer, and required readings on transfer, we have not yet understood how tutors understand and value transfer in relation to their tutoring strategies and, more importantly, meeting student needs. The curriculum presented here builds on tutors’ prior knowledge about tutoring and builds in ample opportunities for tutors to engage with transfer theory, adapt their understanding into their tutoring, and reflect regularly on and assess their application of understanding transfer. This study examines tutors’ responses to the curriculum, one tutor’s tutorials throughout the duration of the curriculum, and one tutor’s discourse-based interview responses. The results of this study indicate that tutor involvement is vital to understanding what transfer looks like in the writing center and that writing centers will benefit from providing tutors with a broad understanding of transfer that tutors can then incorporate into their understanding of effective tutoring practices.
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35

Seguin, Lisa (Lisa Marie) Carleton University Dissertation International Affairs. "Technology transfer: four models of management transfer from Canada to China." Ottawa, 1989.

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36

Armitage, Bruce Alan. "Photoinduced electron transfer, energy transfer and polymerization reactions in phospholipid membranes." Diss., The University of Arizona, 1993. http://hdl.handle.net/10150/186212.

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The differential physical properties found at different depths of a phospholipid membrane permit design of systems for vectorial reactions (which are not possible in isotropic solution). In the system described in Chapter IV, a hydrophobic electron donor (triphenylbenzylborate) binds to the membrane interior while a hydrophilic electron acceptor (a cyanine dye) binds to the surface. Irradiation with red light leads to vectorial electron flow via photoinduced electron transfer (PET), as monitored by fluorescence quenching and photobleaching techniques. The PET reaction efficiency is enhanced over the case where the donor and acceptor are present in water without membranes. In that case, strong dimeric complexes are formed which reduce the efficiency of PET by enhancing nonradiative decay modes for the dye (Chapter III). Addition of a porphyrin to the membrane surface extends the sensitivity of the system to blue light (Chapter V). Excitation of the porphyrin at 417 nm and subsequent energy transfer to the cyanine trigger the same PET chemistry observed with red-light irradiation. Furthermore, the electron- and energy-transfer reactions are enhanced on polymerized, phase-separated membranes (Chapter VI). In these applications, membranes are media for chemical reactions. Membranes also make interesting substrates for chemical reactions, in this case, polymerization. A system consisting of a membrane-bound, amphiphilic cyanine dye and molecular oxygen is described in Chapter VII which effectively initiates the polymerization of vesicles upon irradiation with visible light. Potential utility in drug delivery applications is discussed.
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DelGrego, William J. "The Diffusion of Military Technologies to Foreign Nations Arms Transfer Can Preserve the Defense Technological and Industrial Base /." Maxwell AFB, Ala. : Air University Research Coordinator Office, 1998. http://www.au.af.mil/au/database/research/ay1995/saas/delgrewj.htm.

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Thesis (M.M.A.S.)--School of Advanced Airpower Studies, 1995.
Subject: Arms Transfer and the Preservation of the Defense Technological and Industrial Base (DTIB). Cover page date: June 1995. Vita. Includes bibliographical references.
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Jayaraman, Veerappan, University of Western Sydney, and Faculty of Commerce. "A quantitative model for measuring technology transfer potentials at the industrial level - an application towards establishing technology cooperation." THESIS_FC_XXX_Jayaraman_V.xml, 1998. http://handle.uws.edu.au:8081/1959.7/122.

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International transfer of technology is the key element for the industrialisation and economic development of countries. But the success of any transfer depends on the judicious selection of appropriate technology from the right source and its effective absorption. This depends to a large extent on the selection, adaptation and assimilation capabilities of the recipient of the technology. In technology transfer, adaptation at the transferee end is an important stage. The difference between the technology levels of the transferor and transferee causes a technological gap which creates a potential for technology flow, but the transfer will depend on the assimilating capability of the transferee. In this study, a mathematical function that determines the technological level of a country is developed using the logistic growth pattern. The technological level of a country, in a given industry, is measured by an indicator called 'Technology Index' using the variables that influence and reflect the performance of that industry. The technology index is computed using the factor loadings obtained by the statistical technique factor analysis. In technology transfer, one of the most important problems facing countries is the selection of a transferor. Using the classical optimisation method, optimum transferors for various hypothetical transferees are determined in order to study the optimal partnership in technology transfer. A theoretical framework is provided for technological cooperation among the member countries of APEC based on the technology transfer model and classical optimisation method developed in this study. The theoretical framework can be applied to establish, for each industry, a technology cooperation network among the member countries by identifying the optimum partnership, that will provide an effective technology transfer process. Finally, based on the outcome of the research undertaken, conclusions are drawn and recommendations for further study presented
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Möllerstedt, Lena. "Transfer Pricing : Svenska domstolars tillämpning av OECD Transfer Pricing Guidelines vid armlängdsprisberäkningar." Thesis, Jönköping University, JIBS, Commercial Law, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-359.

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Dyson, Guadalupe Consuelo. "The international transfer of offenders, a critical perspective on the transfer process." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0016/MQ27495.pdf.

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Williams, Lisa D. "Component transfer, positive and negative transfer effects on categorization and recognition ability." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0022/NQ51937.pdf.

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Acharya, Hari. "Hydrophobicity, heat transfer, and momentum transfer at hard and soft aqueous interfaces." Thesis, Rensselaer Polytechnic Institute, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3600990.

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Advancements in science and technology increasingly involve systems operating at the nanoscale. Interfaces are often present in these systems. Nanoscopic interfaces are ubiquitous in biological systems, nanofluidic devices, and integrated circuits. Properties at the interface may be quite different from the bulk, and in fact a true bulk may not be present in these systems. At the nanoscale the ratio of interface to volume is large, and the interface may have the dominant role in determining system behavior. Interfacial characteristics and their connection to interfacial properties are the focus of my thesis. Using molecular simulations of model interfaces we characterize how properties like chemistry, composition, and topography affect such phenomena such as hydrophobicity, heat transfer, and momentum transport at the nanoscale. An interface is defined simply as where two materials meet and a change in some structure or order parameter is observed. In aqueous systems, the type studied here, these changes are relatively sharp and occur within a distance of nanometers. Water molecules near the interface are expected to display sensitivity to the underlying surface. Indeed, water near a hydrophobic surface is more deformable and has greater fluctuations. The hydrophobicity of chemically heterogeneous surfaces and proteins are characterized using these nanoscopic measures. We find the effect of mixing hydrophobic and hydrophobic head group chemistries is asymmetric, i.e., it is easier to make a hydrophobic surface hydrophilic than the reverse. The role of hydrogen bonding in hydrophobic and ion hydration is also characterized using a short range water model. Hydrophobic and ion hydration are reasonably captured with the short range water model. These studies show the importance of chemical composition and local hydrogen bonding in determining surface hydrophobicity. Interfaces also lead to anomalous behavior in heat and momentum transport. Interfaces disrupt local structure and create boundary resistances that manifest in temperature discontinuities and interfacial slip. We explore the effects of chemical heterogeneity, nanoscale surface roughness, and directionality on thermal conductance across model solid-water interfaces. Interfacial conductance is directly influenced by the coupling strength or wettability of the surface. For chemically mixed surfaces, interfacial conductance does not precisely match with wettability. Surface roughness in general enhances conductance, but the improvement cannot be completely attributed to increased solvent accessible surfaced area. Momentum transport displays similar discontinuities at aqueous interfaces. These effects can be reduced through the use of osmolytes. Collectively this work highlights the influence of interfaces on heat and momentum transport. Insights are provided for modifying interfacial behavior and altering the property of interest.

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43

Zhang, Yufang. "Coupled convective heat transfer and radiative energy transfer in turbulent boundary layers." Phd thesis, Ecole Centrale Paris, 2013. http://tel.archives-ouvertes.fr/tel-00969159.

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If radiation plays an important role in many engineering applications, especially in those including combustion systems, influence of radiation on turbulent flows, particularly on the turbulent boundary layers, is still not well known. The objective is here to perform a detailed study of radiation effect on turbulent flows. An optimized emission-based reciprocal (OERM) approach of the Monte-Carlo method is proposed for radiation simulation using the CK model for radiative gas properties. OERM allows the uncertainty of results to be locally controlled while it overcomes the drawback of the original emission-based reciprocity approach by introducing a new frequency distribution function that is based on the maximum temperature of the domain. Direct Numerical Simulation (DNS) has been performed for turbulent channel flows under different pressure, wall temperatures and wall emissivity conditions. Flow field DNS simulations are fully coupled with radiation simulation using the OERM approach. The role of radiation on the mean temperature field and fluctuation field are analyzed in details. Modification of the mean temperature profile leads to changes in wall conductive heat fluxes and new wall laws for temperature when radiation is accounted for. The influence on temperature fluctuations and the turbulent heat flux is investigated through their respective transport equations whose balance is modified by radiation. A new wall-scaling based on the energy balance is proposed to improve collapsing of wall-normal turbulent flux profiles among different channel flows with/without considering radiation transfer. This scaling enables a new turbulent Prandtl number model to be introduced to take into account the effects of radiation. In order to consider the influence of radiation in the near-wall region and predict the modified wall law, a one-dimensional wall model for Large Eddy Simulation (LES) is proposed. The 1D turbulent equilibrium boundary layer equations are solved on an embedded grid in the inner layer. The obtained wall friction stress and wall conductive flux are then fed back to the LES solver. The radiative power term in the energy equation of the 1D wall model is computed from an analytical model. The proposed wall model is validated by a comparison with the former DNS/Monte-Carlo results. Finally, two criteria are proposed and validated. The first one is aimed to predict the importance of wall radiative heat flux while the other one predicts whether a wall model accounting for radiation in the near wall region is necessary. A parametric study is then performed where a k-ǫ model and a turbulent Prandtl number model are applied to simulate the velocity and temperature field of different channel flows under various flow conditions. The obtained criteria values are analyzed and compared.
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44

Pembery, J. G. A. "Mass transfer modelling of heat transfer in partially blocked nuclear fuel bundles." Thesis, University of Exeter, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.354029.

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45

Geades, Nicolas. "Quantitative methods in magnetization transfer and chemical exchange saturation transfer at 7T." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/44059/.

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Ultra-High field (7T) MRI provides high sensitivity which allows for new qualitative and quantitative methodologies to be developed, that provide clinically useful information. The work presented in this thesis is focussed on developing a quick and reliable quantitative MT and CEST methodology, taking account of the difficulties encountered at high field. The method developed here has been tested on various studies, in both healthy and diseased brain, in an effort to aid the understanding of myelination in the human brain. The work in this thesis uses the quantitative measure of MT as a marker for myelination, and it shows strong correlations between MT-based myelination and functional connectivity, as well as very strong correlation between MT and NOE. These findings showcase the potential of NOE as a myelin marker as well, as long as the MT vs. NOE relationship remains the same in pathology. Myelination is investigated (via MT and NOE) in Multiple Sclerosis (MS) and Glioma, showing a strong coupling between the two exists even in pathology. Amide Proton Transfer (APT) is also investigated in Glioma, showing similar trends to MT and NOE. High resolution anatomical images can provide valuable information on the extend of the pathology, but quantitative information of the NMR properties of tissue (like MT, NOE and APT) has the potential to detect earlier abnormalities, and give a quantitative measure of healing or degeneration caused by pathology.
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46

Deshpande, Samir M. "Approximate heat-transfer and wall-temperature calculations for aeroassisted orbital transfer vehicles." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/43842.

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47

He, Dian. "CHIRALITY TRANSFER AND ELECTRON TRANSFER IN DENDRITIC COMPLEXES WITH STABLE SECONDARY STRUCTURE." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1222186119.

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48

Camlioglu, Errol B. "The effect of lipoprotein structure on interlipoprotein lipid transfers by cholesteryl ester transfer protein." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ28405.pdf.

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49

Høisæter, Anne-Lise Anastasiadou. "Knowledge Transfer Between Projects." Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9701.

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The practice of knowledge management in organizations is an issue that has recieved increasing attention during the last 20 years. This focus on knowledge management has also reached the public sector in Norway. Since 2001 the Directorate of Taxes has shown an interest in adopting methods and technologies to improve management of knowledge especially through the use of technology. This thesis aims to evaluate the current transfer of knowledge between projects in the Directorate of Taxes’ IT and service partner. The thesis also suggests and evaluates an approach for knowledge transfer based on two tools, the post mortem analysis and the wiki. I wish to show how this approach, based on one technical tool and one non-technical, covers all stages of the knowledge transfer process and helps the organization create and retain their knowledge. To examine the current situation of knowledge transfer in the Directorate of Taxes and to evaluate the suggested approach for knowledge transfer data was collected in six different stages. In spring 2007 I observed a meeting of project managers which provided me with information on how knowledge transfer is done on the managerial level. Documents that are used in project work were studied throughout the fall of 2007 to learn more about what project work consists of and what routines they have around the work. In late fall 2007 I conducted 8 interviews with employees at the Directorate of Taxes. I enquired about the use of the documents and meetings, and about other routines and practices concerning knowledge transfer. I also asked the employees about what they expected and desired from a potential new approach of knowledge transfer and what they thought of using the two tools that constitute my approach. In spring 2008 I observed the execution of a post mortem analysis and interviewed the participants afterwards. This gave me new insight as to how the tool works and how the employees of the organization respond to it. I studied documents containing previous research done on organizational learning at the Directorate of Taxes, and gained insight on the organization from the perspective of others. I also used the findings from this research to evaluate the suitability of the two tools. I learnt that the project members at the Directorate of Taxes chiefly transfer knowledge directly through people by a so called open-door-policy, where people are encouraged to seek and give help when they need it, face-to-face. There are some problems with this method including that it can be hard to find the right people and it is open for constant interruptions. At the managerial level sporadic meetings are conducted where knowledge is transferred, but problems with this method include that they are low in attendance and that the knowledge shared is not optimal. The third attempt of knowledge transfer reported is the use documents and templates. The Directorate of Taxes spends time and resources trying to transfer knowledge through the documents, but there are no routines around their use. The two interview sessions and the execution of the post mortem analysis show promising results for the suggested approach. The interviewees and participants of the post mortem analysis were very positive to the adoption of the method. There are however some employees who are skeptical to the suitability of the post mortem analysis and to using an electronic system for knowledge transfer. The organization has to make sure that it has its employees on board when taking these methods into use if they are to be successful.

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Wahlberg, Tobias. "Modeling of Heat Transfer." Thesis, Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-12217.

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Modeling of heat transfer using Dymola. In this report a evaporator, economizer and superheater where modeled. The report describes how the models where modeled and what input was most suitable for a accurate model.
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