Дисертації з теми "Non-conventional"
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Wong, Ho-yin Ada, and 王可忻. "Home for non-conventional households." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31984861.
Повний текст джерелаWong, Ho-yin Ada. "Home for non-conventional households." Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25952900.
Повний текст джерелаBeales, Patrick. "Conventional and non-conventional stress path testing of Maguga clay." Master's thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/5048.
Повний текст джерелаPiccolo, Damiano. "Epoxidation of vegetable oils by conventional and non-conventional methods." Doctoral thesis, Università degli studi di Padova, 2020. http://hdl.handle.net/11577/3425915.
Повний текст джерелаPrichanont, Seeroong. "Epoxide biotransformation in non-conventional media." Thesis, Imperial College London, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307437.
Повний текст джерелаSILVA, FLAVIO DE ANDRADE. "TOUGHNESS OF NON CONVENTIONAL COMPOSITE MATERIALS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2004. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=5271@1.
Повний текст джерелаO objetivo deste trabalho foi avaliar as propriedades mecânicas, físicas e microestruturais de materiais compósitos cimentícios reforçados por fibras naturais e de laminados de bambu. O trabalho experimental foi direcionado para a determinação da tenacidade. Para se determinar a tenacidade foram utilizados três tipos de ensaios: impacto Charpy, impacto balístico e flexão em 3 pontos. Após os ensaios, a superfície de fratura dos corpos-de-prova foi analisada por microscopia eletrônica de varredura (MEV). Esta análise microestrutural serviu para determinar os modos de fratura e validar as hipóteses feitas nos modelos matemáticos utilizados. Foram usados modelos adaptados da literatura para a determinação da tenacidade e os valores teóricos obtidos foram confrontados com os experimentais. Determinou-se também através de modelos encontrados na literatura a tensão interfacial de todas as fibras utilizadas nesta pesquisa. Os modelos empregados para calcular a tenacidade e a tensão de adesão interfacial, se mostraram eficientes e válidos. Em segundo plano, porém não menos importante, ficou a determinação das propriedades térmicas dos materiais utilizados. Foram efetuados ensaios de condutividade térmica do compósito e ensaios termogravimétricos das fibras vegetais e do bambu. Os compósitos cimentícios foram reforçados por diferentes fibras naturais: polpa refinada de bambu (CPB), polpa de sisal (CPS), polpa de eucalipto (CPE), fibras curtas de sisal (CPFS) e wollastonita (CPW). As proporções das polpas de bambu, sisal e eucalipto utilizadas como reforço nas matrizes cimentícias foram de 8 por cento e 14 por cento em relação à massa do cimento, a da fibra curta de sisal (25 mm) foi de 3 por cento em relação ao volume e a da wollastonita foi de 11,5 por cento em relação à massa. Compóstios híbridos feitos com wollastonita e polpa de bambu (CPBW) foram também produzidos apenas variando a proporção da polpa de bambu em 8 por cento e 14 por cento e mantendo fixa a da wollastonita em 11,5 por cento. Como uma tentativa de se melhorar a resistência ao impacto, laminados CPB/AL foram também fabricados colando duas chapas de alumínio (liga 5052 H34) de espessura 0,8 mm em ambas às faces dos compósitos reforçados por fibra de bambu, formando assim compósitos sanduíche (CPBA). O bambu Moso (Phyllostachys heterocycla pubescens) com 5 anos de idade foi usado para fabricação dos laminados de bambu, sendo tratado com água fervida para a prevenção de ataques biológicos. Técnicas para a extração do laminado a partir de seu formato natural foram estudadas estabelecendo suas vantagens e desvantagens. Para o ensaio de impacto foram utilizados corpos-de-prova com dimensão nominal de 120 mm x 15 mm x 6 mm perfazendo um total de 18 corpos-de-prova. Para o de flexão foram realizados ensaios com uma lâmina simples de bambu (BL) e bambu laminado colado (BLC) com 3 camadas de lâminas dispostas ortogonalmente. Os resultados dos testes de impacto Charpy e flexão em 3 pontos comprovaram a boa tenacidade do bambu laminado quando submetido a cargas de impacto (42,54 kJ/m2) e a cargas estáticas (19,77 kJ/m2 para o laminado e 17,63 kJ/m2 para o laminado colado). Compósitos sanduíche constituídos de alumínio e laminados de bambu foram também fabricados. Estes foram analisados através de ensaios de impacto balísticos seguindo as recomendações da norma NIJ 0101.04. Observações no microscópico eletrônico de varredura foram realizadas para se analisar os mecanismos de falha dos laminados.
The main objective of this work was to evaluate the mechanical, physical and microestructure properties of cementitious composite materials and bamboo laminates. The experimental program was focused on the determination of toughness. Three diferent types of tests were performed in order to establish it: Charpy impact, ballistic impact and three point bending test. After the tests, the fractured surface of the failed test specimens was observed using a Scanning Electron Microscope (SEM) to establish the failure mode. Mathematical models adapted from the available literature were used to determine the toughness from which the values were confronted to the ones obtained experimentally. It was also determined by mathematical models the interfacial bond stress of all fibers used in this research. The two models, used in the toughness and interfacial bond stress calculation, showed to be efficient, providing valid results. In second plan, but not less important, was the determination of the materials thermal properties. Thermal conductivity tests of the composites and thermogravimetry of the fibers and bamboo were performed. The cementitious composites were reinforced by different natural fibers: refined bamboo pulp (CPB), sisal pulp (CPS), eucalyptus pulp (CPE), short sisal fibers (CPFS) and wollastonite. The mass fraction of bamboo, sisal and eucalyptus pulp studied were 8 percent and 14 percent. For the wollastonite fiber the mass fraction studied was 11.5 percent and for the short sisal fiber a 3 percent volume fraction was studied. Hybrid composites made with wollastonite and bamboo pulp (CPBW) were also produced varying the bamboo fraction mass to 8 percent and 14 percent but keeping constant to 11.5 percent the wollastonite mass fraction. The slurry de-watering process was used in the production of all composites described before. To reduce the adverse effects of weathering on the cellulose fibers and to improve the impact load and flexural resistance of the composite, aluminum thin sheets were used to produce a sandwich composite lamina with the CPB, which was denominated as CPBA. Compound Adhesive gel from Otto Baumgart which is a type of epoxy was used to fix the aluminum sheets on the CPB. The use of aluminum has proved to give much higher impact resistance results when compared to the CPB ones. The 5 years old Moso bamboo (Phyllostachys heterocycla pubescens), which was previously treated in boiled water to eliminate biological agents, was used to produce the bamboo laminates. Techniques were developed to extract bamboo laminates from its natural form, establishing its advantages and disadvantages. For the Charpy impact test, a total of 18 specimens with nominal dimensions of 120 mm x 15 mm x 6 mm were tested. Laminated (BL) and 3 layer cross ply laminated bamboo (BLC) were tested in bending. A total of 9 specimens were tested per bamboo configuration. The BL specimens had nominal dimensions of 120 mm x 30 mm x 6 mm and the BLC were 120 mm x 30 mm x 17 mm. The results demonstrated the good toughness of bamboo laminates when subject to dynamic (42.54 kJ/m2) and to static load (19.77 kJ/m2 for the laminate and 17.63 kJ/m2 for the cross ply laminate). Aluminum thin sheets were again used to make sandwich composites, but now using the bamboo laminate (BLCA). The BLCA was tested using the ballistic impact test following the standard NIJ 0101.04. Analysis on the Scanning Eléctron Microscope (SEM) were performed in order to establish the laminate s failure mechanisms.
Yang, Yin. "Join processing in non-conventional databases /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?CSED%202009%20YANG.
Повний текст джерелаGallinucci, Enrico <1988>. "Business Intelligence on Non-Conventional Data." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amsdottorato.unibo.it/7863/1/Phd%20thesis%20Gallinucci%20Enrico.pdf.
Повний текст джерелаCANTÙ, EDOARDO. "Printed Sensors on Non-Conventional Substrates." Doctoral thesis, Università degli studi di Brescia, 2022. http://hdl.handle.net/11379/554976.
Повний текст джерелаIndustry 4.0 has radically been transforming the production processes and systems with the adoption of enabling technologies, such as Internet of Things (IoT), Big Data, Additive Manufacturing (AM), and Cloud Computing. The principles of these technologies can be also translated into any aspect of everyday life thanks to the usage of printed electronics (PE), offering techniques to produce unconventional sensors and systems or to make conventional objects “smart”. With PE playing a key role in the design of next-generation objects, smart objects fulfill their original function, and they can measure physical quantities in the surrounding environment, being able to communicate with other objects or remote units. Many PE technologies could be adopted, but above all, Aerosol Jet Printing (AJP) with its characteristics can be considered for such a purpose being able to print on any kind of surface a huge variety of functional materials. In combination with Flash Lamp Annealing (FLA), a low-point temperature thermal process, it is possible to complete the production of sensors and circuits on any kind of substrate. The aim of this thesis work is to identify innovative methods and processes allowing to directly embed sensors, circuits and electronics on the surface of objects and to analyze the metrological characteristics. To this end, compatibility studies have been carried out considering different materials, both in terms of substrates and inks for the realization of smart sensors and objects. Furthermore, design, fabrication and test of sensors and circuits has been analyzed in different fields. Chapter 1 will provide the background and the outline of this dissertation. Smart objects can be manufactured with numerous different technologies and materials depending on the performance required and on the specific application. The purpose of chapter 2 is to provide an analysis of 3D PE technologies that enable sensors printing on complex surfaces. First, an explanation of the technologies under consideration is provided. Then focusing on the used technologies, a deep analysis of AJP and FLA will be provided in chapter 3. Examples carried out are divided into four macro-areas, wearable devices, paper-based packaging, wet laboratories applications (cells and biomolecules sensing), to demonstrate the applicability of the proposed methodologies in the realization of sensors and smart objects. Starting from chapter 4, applicative examples will be reported. The tested prototypes were involved in different working contexts, from food industry to medical rehabilitation, passing through laboratory analysis, keeping a common trait: measuring thanks to unconventional sensors. This fact underlines the applicability of the proposed methodologies to any kind of request, giving the possibility to turn everyday objects into smart ones, thus demonstrating the flexibility of the methods identified and the pervasiveness of sensors and smart objects made this way.
Dineva, A. A. "Non-conventional data representation and control." Doctoral thesis, Università degli Studi di Milano, 2017. http://hdl.handle.net/2434/487393.
Повний текст джерелаReis, P. M. O. "Non-conventional housing finance in Ibadan, Nigeria." Thesis, Open University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314810.
Повний текст джерелаThompson, Michael Andrew. "Understanding and optimisation of non-conventional emulsions." Thesis, University of Hull, 2012. http://hydra.hull.ac.uk/resources/hull:6283.
Повний текст джерелаFernandez, labrador Clara. "Indoor Scene Understanding using Non-Conventional Cameras." Thesis, Bourgogne Franche-Comté, 2020. http://www.theses.fr/2020UBFCK037.
Повний текст джерелаHumans understand environments effortlessly, under a wide variety of conditions, by the virtue of visual perception. Computer vision for similar visual understanding is highly desirable, so that machines can perform complex tasks by interacting with the real world, to assist or entertain humans. In this regard, we are particularly interested in indoor environments, where humans spend nearly all their lifetime.This thesis specifically addresses the problems that arise during the quest of the hierarchical visual understanding of indoor scenes.On the side of sensing the wide 3D world, we propose to use non-conventional cameras, namely 360º imaging and 3D sensors. On the side of understanding, we aim at three key aspects: room layout estimation; object detection, localization and segmentation; and object category shape modeling, for which novel and efficient solutions are provided.The focus of this thesis is on the following underlying challenges. First, the estimation of the 3D room layout from a single 360º image is investigated, which is used for the highest level of scene modelling and understanding. We exploit the assumption of Manhattan World and deep learning techniques to propose models that handle invisible parts of the room on the image, generalizing to more complex layouts. At the same time, new methods to work with 360º images are proposed, highlighting a special convolution that compensates the equirectangular image distortions.Second, considering the importance of context for scene understanding, we study the problem of object localization and segmentation, adapting the problem to leverage 360º images. We also exploit layout-objects interaction to lift detected 2D objects into the 3D room model.The final line of work of this thesis focuses on 3D object shape analysis. We use an explicit modelling of non-rigidity and a high-level notion of object symmetry to learn, in an unsupervised manner, 3D keypoints that are order-wise correspondent as well as geometrically and semantically consistent across objects in a category.Our models advance state-of-the-art on the aforementioned tasks, when each evaluated on respective reference benchmarks
GAMBA, MATTEO. "Design of non conventional Synchronous Reluctance machine." Doctoral thesis, Politecnico di Torino, 2017. http://hdl.handle.net/11583/2669965.
Повний текст джерелаCAPUSONI, CLAUDIA. "APPLICATION OF NON-CONVENTIONAL YEASTS IN BIOPROCESSES." Doctoral thesis, Università degli Studi di Milano, 2020. http://hdl.handle.net/2434/788442.
Повний текст джерелаRajhi, Wassim. "Essays on the capital structure and insolvency in conventional and non-conventional banking systems." Phd thesis, Université de Toulon et du Var, 2011. http://tel.archives-ouvertes.fr/tel-00657342.
Повний текст джерелаClifford, Dustin M. "Non-Conventional Approaches to Syntheses of Ferromagnetic Nanomaterials." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4205.
Повний текст джерелаMatias, Jean de Souza. "Crystal electric field efect in non-conventional structures." reponame:Repositório Institucional da UFABC, 2017.
Знайти повний текст джерелаDissertação (mestrado) - Universidade Federal do ABC, Programa de Pós-Graduação em Física, 2017.
Em Física da Matéria Condesada, as terras raras apresentam um papel importante em várias aplicações tecnológicas. Suas camadas 4f incompletas possuem enumeras con- gurações diferentes possibilitando o desenvolvimento e melhoramento de propriedades interessantes. Materiais supercondutores, lasers de estado sólido, radares e ímãs permanentes são bons exemplos de dispositivos que utilizam materiais desenvolvidos com terras raras. Quando terras raras são colocadas em um material matriz, as interações entre esses elementos ou entre a matriz e as terras raras fazem com que os seus estados eletrônicos mudem. Estruturas cristalinas apresentam campo elétrico cristalino, cuja teoria desenvolvida no século passado foi amplamente estudada e aplicada à vários grupos de simetria em cristais bulk. Até o momento, porém, muito pouco tem sido estudado a respeito de como o campo elétrico de estruturas não convencionais, como quasicristias e nanocristais, afeta os autoestados das terras raras. Portanto, o objetivo desse projeto foi analizar o efeito de campo elétrico cristalino em dois tipos de materiais: Nanopartículas cúbicas com tamanho de 8 nm e quasicristais icosaédricos, bem como seu aproximante. Para isso, nanopartículas de NaY1..xRExF4 (RE = Yb, Er, Dy, Gd) foram sintetizadas pelo método de termo-decomposição e quasicristais de Au-Al-Yb foram crescidos em forno a arco. Para a determinação parâmetros de campo elétrico cristalino Bm n , foram feitos ajustes das curvas de magnetização dependentes da temperatura e do campo magnético aplicado. Além disso, para os quasicristais foi encontrado um grupo de simetria pontual equivalente e seus parâmetros de campo elétrico cristalino foram comparados com os de seus aproximantes. Com isso, observou-se que somente parâmetros de segunda ordem apresentaram uma diferença signicativa quando comparados entre essas duas estruturas; B0 2 é 20 vezes maior para a estrutura quasicristalina. Para as nanopartículas cúbicas, uma Hamiltoniana total foi proposta e com isso foi feita um simulação para determinar a separação total dos níveis de energia da camada incompleta 4f das terras raras. Além disso, o espectro de Up conversion foi medido e comparado com a simulação teórica. A largura de linha do espectro teórico, 470 20 K, para a transição 4S3=2 ! 4I15=2 , é comparável aos resultados empíricos, 650 50 K. O estado fundamental dos sistemas foi conrmado pela técnica de Ressonância Eletrônica de Spin. Dessa forma, foi estabelecida uma realação de como a separação total dos multipletos-J afeta a emissão de Up conversion destas NP's.
In Condensed Matter Physics, rare earth elements play an important role in several technological applications. Their complex 4f unfullled shell presents numerous dierent congurations, making possible to engineer or tune interesting properties. Superconductors, solid state lasers, radars and permanent magnets are some examples of cutting edge devices using materials developed with rare earth elements. When a rare earth ion is placed in a host material, their interactions with each other or with the host lattice are responsible for the arrangement of their electronic state. Crystalline structures exhibit the crystal eld eect, whose theory developed in the last century has been largely applied and studied to various point group symmetries in bulk crystals. However, there is a lack of researches in how the electric eld of non-conventional host lattices, such as quasicrystals and nanocrystals, aect rare earth's eigenstates. Therefore, the aim of this project was to analyze the crystal eld eect in two dierent kind of materials: Cubic nanoparticles with 8 nm in size and icosahedral bulk quasicristals, as well as their crystal approximant. For that, NaY1..xRExF4 (RE = Yb, Er, Dy, Gd) nanoparticles were synthesized by temperature decomposition and Au-Al- Yb quasicrystals were grown by arc-melting. Fittings of the thermal and eld dependent magnetization were used to determine the crystal electric eld parameters Bmn . In the quasicrystal material case, an equivalent point group symmetry was obtained and their crystal electric eld parameters were compared with the ones of their approximant. Only parameters of second order substantially diered between both structures, B02 was found out to be around 20 times larger than that for the approximant. Moreover, in the cubic nanostructures case, the overall splitting of the 4f unfullled shell of the RE elements was determined diagonalizing a proposed total Hamiltonian, whose terms include the Crystal Electric Field parameters. In addition, the up-conversion light emission signal was acquired and compared with a theoretical simulation. The theoretical up-conversion light emission line-width found out as 471 20 K, for the transition 4S3=2 ! 4I15=2 , is comparable to empirical results, 650 50 K. The ground state of the systems was conrmed by Electron Spin Resonance analysis. In this case, a relation with how the overall energy splitting of the J-multiplets aect the UC conversion light emission of theses NP's was established.
Andreini, Rebecca <1985>. "Non conventional species as monitor of environmental pollution." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amsdottorato.unibo.it/10468/3/Andreini_Rebecca_tesi.pdf.
Повний текст джерелаQuesta tesi raccoglie diversi studi ecotossicologici, che implicano una analisi quali-quantitativa relativa alla detezione di diverse classi di inquinanti su diverse specie acquatiche, che occupano differenti livelli trofici della catena alimentare, e che sono caratterizzati da differenze biologiche, etologiche e dietetiche, ma tutti considerati eccellenti bioindicatori. Questa scelta ci ha permesso di avere un'ampia panoramica della contaminazione degli ambienti acquatici. Sono stati discussi gli effetti dannosi di diversi composti chimici sulle singole specie in esame, considerando anche le implicazioni economiche e relative alla tutela della salute pubblica legate all'inquinamento dell'ambiente e all'esposizione a xenobiotici conosciuti ed emergenti. I nostri studi sottolineano l'importanza di un approccio multidisciplinare e integrato che includa l'applicazione del concetto di One Health per garantire la protezione della salute pubblica e il rispetto degli ambienti naturali. Gli studi raccolti in questa tesi mirano anche a superare alcuni importanti limiti della branca dell'ecotossicologia, come la mancanza di standardizzazione nelle metodiche laboratoristiche. I nostri dati sottolineano anche l'importanza di espandere la ricerca a un numero maggiore di matrici biologiche diverse rispetto a quelle indicate dalla letteratura come tessuti bersaglio per specifici inquinanti. Questa condizione consente di ottenere informazioni più dettagliate sulla cinetica degli xenobiotici negli organismi animali. I nostri studi permettono anche di ampliare le conoscenze relative ai meccanismi di sinergia e antagonismo delle miscele di inquinanti che possono accumularsi contemporaneamente nella fauna selvatica.
BURRELLO, CLAUDIA. "GUT MICROBIOTA CROSSTALK WITH CONVENTIONAL AND NON-CONVENTIONAL T CELLS: A GAME OF MANY PLAYERS." Doctoral thesis, Università degli Studi di Milano, 2019. http://hdl.handle.net/2434/604755.
Повний текст джерелаKarmore, Vishal K. "Kinetics Of Polymerization And Degradation By Non-Conventional Techniques." Thesis, Indian Institute of Science, 2001. http://hdl.handle.net/2005/269.
Повний текст джерелаCook, Andrew G. "Structure-property relationships in non-conventional liquid crystalline materials." Thesis, University of Aberdeen, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248659.
Повний текст джерелаEvans, Joanne Caroline. "Investigation into the effectiveness of non-conventional lightning protection." Thesis, University of Strathclyde, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366763.
Повний текст джерелаBhila, TE, MM Ratsaka, A. Kanengoni, and FK Siebrits. "Effect of sun drying on microbes in non-conventional." South African Journal of Animal Science, 2010. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001208.
Повний текст джерелаAzman, Norhidayah. "Dark retweets : an investigation of non-conventional retweeting patterns." Thesis, University of Southampton, 2014. https://eprints.soton.ac.uk/368784/.
Повний текст джерелаGonçalves, Ricardo Miguel Romão. "Antenna design for passive sensors in non-conventional materials." Doctoral thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/17298.
Повний текст джерелаMotivado pela larga expansão dos sistemas RFID e com o desenvolvimento do conceito de Internet das Coisas, a evolução no desenho e métodos de produção de antenas em suportes de materiais alternativos tem tido uma exploração intensiva nos últimos anos. Isto permitiu, não só o desenvolvimento de produtos no campo da interação homem-máquina, mas também tornar estes produtos mais pequenos e leves. A procura de novas técnicas e métodos para produzir eletrónica impressa e antenas em materiais alternativos e, portanto, uma porta aberta para o aparecimento de novas tecnologias. Isto aplica-se especialmente no mercado dos sensores, onde o peso, o tamanho, o consumo energético, e a adaptabilidade a diversos ambientes, têm grande relevância. Esta tese foca-se no desenvolvimento de antenas com suporte em materiais não convenvionais, como os já testados papel e têxteis, mas também na exploração de outros, desconhecidos do ponto de vista eléctrico, como a cortiça e polímeros biodegradáveis usados em impressão 3D. Estes materiais são portanto usados como substrato, ou material de suporte, para diversas antenas e, como tal, as propriedades electromagnéticas destes materiais têm de ser determinadas. Assim, e apresentado neste documento uma revisão de métodos de caracterização de materiais, bem como a proposta de um método baseado em linhas de trasmissão impressas, e a respectiva caracterização electromagnética de diversos materiais. Além disso, são propostos desenhos de antenas para diversos cenários e aplicações utilizando os materiais anteriormente mencionados. Com esta tese concluiu-se que a utilização de materiais alternativos e hoje uma realidade e os resultados obtidos são muito encorajodares para o desenvolvimento de um conjunto de sensores para aplicações RFID com uma grande capacidade de integração.
The advancement of the design and fabrication of antennas using textiles or paper as substrates has rapidly grown motivated by the boom of RFID systems and the developing concept of the Internet of Things. These advancements have allowed, not only the development of products for manmachine interaction, but also to make these products smaller and lighter. The search for new techniques and methods to produce printed electronics and antennas in alternative materials is therefore an open door for new technologies to emerge. Especially in the sensors market, where weight, size, power consumption and the adaptability to the target application, are of great importance. This thesis focuses on the development of antenna design approaches with alternative materials, such as the already tested paper and textiles, but also others relatively unknown, such as cork and biodegradable polymers used in 3D printing. These materials are applied to act as substrates, or support structures for the antennas. Therefore, their electromagnetic properties need to be determined. Due to that, a review of electromagnetic characterization methods, as well as the proposal of a custom method based on printed transmission lines, is presented in this document. Besides, several antenna designs, for di erent application scenarios, using the previously mentioned materials, are proposed. With this thesis it was proved that it is possible to develop passive sensors in di erent alternative materials for RFID applications and others, which shows great promise in the use of these materials to achieve higher integration in sensing and identi cation applications.
Mottaghizadeh, Alireza. "Non-conventional insulators : metal-insulator transition and topological protection." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066652/document.
Повний текст джерелаThis manuscript presents an experimental study of unconventional insulating phases, which are the Anderson insulator, induced by disorder, the Mott insulator, induced by Coulomb interactions, and topological insulators.In a first part of the manuscript, I will describe the development of a method to study the charge response of nanoparticles through Electrostatic Force Microscopy (EFM). This method has been applied to magnetite Fe3O4 nanoparticles, a material that presents a metal-insulator transition, i.e. the Verwey transition, upon cooling the system below a temperature Tv=120K. In a second part, this manuscript presents a detailed study of the evolution of the Density Of States (DOS) across the metal-insulator transition between an Anderson-Mott insulator and a metallic phase in the material SrTiO3 and this, as function of dopant concentration, i.e. oxygen vacancies. We found that in this memristive type device Au-SrTiO3-Au, the dopant concentration could be fine-tuned through electric-field migration of oxygen vacancies. In this tunnel junction device, the evolution of the DOS can be followed continuously across the metal-insulator transition. Finally, in a third part, the manuscript presents the development of a method for the microfabrication of Aharonov-Bohm rings with the topological insulator material, Bi2Se3, grown by molecular beam epitaxy. Preliminary results on the quantum transport properties of these devices will be presented
Dusek, Jiri. "Machines with non-conventional topologies for more electric applications." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/39973/.
Повний текст джерелаFedorov, Aleksey. "Non-conventional Many-body Phases in Ultracold Dipolar Systems." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS580/document.
Повний текст джерелаThe problem of revealing anddescribing novel macroscopic quantum statescharacter- ized by exotic and non-conventionalproperties is of fundamental importance formodern physics. Such states offer fascinatingprospects for potential applications in quantumin- formation processing, quantum simulation,and material research. In the present Thesis wedevelop a theory for describing nonconventionalphases of ultracold dipolar gases.The related systems of large-spin atoms, polarmolecules, and dipolar excitons in semiconductorsare actively studied in experiments.We put the main emphasis on revealing the roleof the long-range character of the dipole-dipoleinteraction.We consider the effect of rotonization for a 2Dweakly interacting gas of tilted dipolar bosonsin a homogeneous layer. We predict the effectof rotonization for a weakly correlated Bosegas of dipolar excitons in a semiconductorlayer and calculate the stability diagram. Wethen consider p-wave superfluids of identicalfermions in 2D lattices. Finally, we discussanother interesting novel superfluid offermionic polar molecules
Corbani, Mario. "Assimilation of data from conventional and non conventional networks through a LETKF scheme in the COSMO model." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/9895/.
Повний текст джерелаYan, Jun. "Assembly strategy of polyoxotungstates : nanosized clusters with non-conventional templates." Thesis, University of Glasgow, 2010. http://theses.gla.ac.uk/2179/.
Повний текст джерелаDadios, Elmer P. "Non-conventional control of the flexible pole-cart balancing problem." Thesis, Loughborough University, 1996. https://dspace.lboro.ac.uk/2134/10413.
Повний текст джерелаShakeel, Safdar. "Effects of non-conventional beam geometries in laser materials processing." Thesis, University of Manchester, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.545860.
Повний текст джерелаSandri, Gustavo Luiz. "Automated non-contact heart rate measurement using conventional video cameras." reponame:Repositório Institucional da UnB, 2016. http://dx.doi.org/10.26512/2016.02.D.21118.
Повний текст джерелаConforme o sangue flui através do corpo de um indivíduo, ele muda a forma como a luz é irradiada pela pele, pois o sangue absorve luz de forma diferente dos outros tecidos. Essa sutil variação pode ser capturada por uma câmera e ser usada para monitorar a atividade cardíaca de uma pessoa. O sinal capturado pela câmera é uma onda que representa as variações de tonalidade da pele ao longo do tempo. A frequência dessa onda é a mesma frequência na qual o coração bate. Portanto, o sinal capturado pela câmera pode ser usado para estimar a taxa cardíaca de uma pessoa. Medir o pulso cardíaco remotamente traz mais conforto pois evita o uso de eletrodos. Também permite o monitoramento de uma pessoa de forma oculta para ser empregado em um detector de mentira, por exemplo. Neste trabalho nós propomos dois algoritmos para a estimação da taxa cardíaca sem contato usando câmeras convencionais sob iluminação não controlada. O primeiro algoritmo proposto é um método simples que emprega um detector de face que identifica a face da pessoa sendo monitorada e extrai o sinal gerado pelas mudanças no tom da pele devido ao fluxo sanguíneo. Este algoritmo emprega um filtro adaptativo para aumentar a energia do sinal de interesse em relação ao ruído. Nós mostramos que este algoritmo funciona muito bem para vídeos com pouco movimento. O segundo algoritmo que propomos é uma melhora do primeiro para torná-lo mais robusto a movimentos. Nós modificamos o método usado para definir a região de interesse. Neste algoritmo é utilizado um detector de pele para eliminar pixels do plano de fundo do vídeo, os frames dos vídeos são divididos em micro-regiões que são rastreados com um algoritmo de fluxo ótico para compensar os movimentos e um algoritmo de clusterização é aplicado para selecionar automaticamente as melhores micro-regiões para efetuar a estimação da taxa cardíaca. Propomos também um esquema de filtragem temporal e espacial para reduzir o ruído introduzido pelo algoritmo de fluxo ótico. Comparamos os resultados dos nossos algoritmos com um oxímetro de dedo comercial e mostramos que eles funcionam bem para situações desafiadoras.
As the blood flows through the body of an individual, it changes the way that light is irradiated by the skin, because blood absorbs light differently than the remaining tissues. This subtle variation can be captured by a camera and be used to monitor the heart activity of a person. The signal captured by the camera is a wave that represents the changes in skin tone along time. The frequency of this wave is the same as the frequency by which the heart beats. Therefore, the signal captured by the camera could be used to estimate a person’s heart rate. This remote measurement of cardiac pulse provides more comfort as it avoids the use of electrodes or others devices attached to the body. It also allows the monitoring of a person in a canceled way to be employed in lie detectors, for example. In this work we propose two algorithms for non-contact heart rate estimation using conventional cameras under uncontrolled illumination. The first proposed algorithm is a simple approach that uses a face detector to identify the face of the person being monitored and extract the signal generated by the changes in the skin tone due to the blood flow. This algorithm employs an adaptive filter to boost the energy of the interest signal against noise. We show that this algorithm works very well for videos with little movement. The second algorithm we propose is an improvement of the first one to make it more robust to movements. We modify the approach used to define the region of interest. In this algorithm we employ a skin detector to eliminate pixels from the background, divide the frames in microregions that are tracked using an optical flow algorithm to compensate for movements and we apply a clustering algorithm to automatically select the best micro-regions to use for heart rate estimation. We also propose a temporal and spatial filtering scheme to reduce noise introduced by the optical flow algorithm. We compared the results of our algorithms to an off-the-shelf fingertip pulse oximeter and showed that they can work well under challenging situations.
Zhang, Wuming. "Towards non-conventional face recognition : shadow removal and heterogeneous scenario." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEC030/document.
Повний текст джерелаIn recent years, biometrics have received substantial attention due to the evergrowing need for automatic individual authentication. Among various physiological biometric traits, face offers unmatched advantages over the others, such as fingerprints and iris, because it is natural, non-intrusive and easily understandable by humans. Nowadays conventional face recognition techniques have attained quasi-perfect performance in a highly constrained environment wherein poses, illuminations, expressions and other sources of variations are strictly controlled. However these approaches are always confined to restricted application fields because non-ideal imaging environments are frequently encountered in practical cases. To adaptively address these challenges, this dissertation focuses on this unconstrained face recognition problem, where face images exhibit more variability in illumination. Moreover, another major question is how to leverage limited 3D shape information to jointly work with 2D based techniques in a heterogeneous face recognition system. To deal with the problem of varying illuminations, we explicitly build the underlying reflectance model which characterizes interactions between skin surface, lighting source and camera sensor, and elaborate the formation of face color. With this physics-based image formation model involved, an illumination-robust representation, namely Chromaticity Invariant Image (CII), is proposed which can subsequently help reconstruct shadow-free and photo-realistic color face images. Due to the fact that this shadow removal process is achieved in color space, this approach could thus be combined with existing gray-scale level lighting normalization techniques to further improve face recognition performance. The experimental results on two benchmark databases, CMU-PIE and FRGC Ver2.0, demonstrate the generalization ability and robustness of our approach to lighting variations. We further explore the effective and creative use of 3D data in heterogeneous face recognition. In such a scenario, 3D face is merely available in the gallery set and not in the probe set, which one would encounter in real-world applications. Two Convolutional Neural Networks (CNN) are constructed for this purpose. The first CNN is trained to extract discriminative features of 2D/3D face images for direct heterogeneous comparison, while the second CNN combines an encoder-decoder structure, namely U-Net, and Conditional Generative Adversarial Network (CGAN) to reconstruct depth face image from its counterpart in 2D. Specifically, the recovered depth face images can be fed to the first CNN as well for 3D face recognition, leading to a fusion scheme which achieves gains in recognition performance. We have evaluated our approach extensively on the challenging FRGC 2D/3D benchmark database. The proposed method compares favorably to the state-of-the-art and show significant improvement with the fusion scheme
Kaul, Aparna. "Mechanisms of Non-Conventional Cell Death in Brain Tumor Cells." University of Toledo Health Science Campus / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=mco1243364096.
Повний текст джерелаIaneva, Nadia. "Registration of non-conventional signs under the community trademark regime." Berlin wvb, Wiss. Verl, 2008. http://d-nb.info/990791149/04.
Повний текст джерелаNorbert, Čeljuska. "Novel metamaterial stuctures for non-conventional propagation of acoustic waves." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2015. https://www.cris.uns.ac.rs/record.jsf?recordId=95690&source=NDLTD&language=en.
Повний текст джерелаМетаматеријали су вештачки медијуми састављени од јединичних ћелија мањих од таласне дужине, пројектовани на посебан начин да при пропагацији таласа испољавају необичне особине које се иначе не срећу у природи. Већина истраживања у овој области фокусира се на електромагнетске метаматеријале. У овој дисертацији презентовани су резултати у новом мултидисциплинарном пољу метаматеријала у акустици и реализација нове неконвенционалне пропагације таласа применом јединичних ћелија метаматеријала. Научни допринос ове дисертације су три нова типа модова пропагације таласа и њихова контрола новим пројектованим јединичним ћелијама метаматеријала. У дисертацији је теоријски анализирана и експериментално показана нова класа CNZ (енг. compressibility-near-zero) акустичке пропагације постигнуте Хелмхолцовим резонатором. Дата је затворена аналитичка формула за ефективну стишљивост јединичне ћелије, а затим је показано да постоје две фреквенције које подржавају CNZ пропагацију. Такође, предложена је нова јединична ћелија са ефективном густином Лоренцовог типа, изведена је затворена аналитичка формула за њену ефективну густину и показане су „левoрука“, еванесцентна и DNZ (енг. density-near-zero) пропагација акустичких таласа. На крају, по први пут је показано да се површински акустични талас који се простире на граници између флуида и чврсте избраздане површи може ефикасно контро-лисати само променом температуре, док геометрија избраздане површи остаје непромењена. Ово отвара могућности за бројне нове примене где је потребна лакоћа екстерног подешавања. Пратећи изложену теорију, демонстрирано је заробљавање звука контролисано температуром, као и његова примена у акустичкој спектралној анализи и мерењу темпе-ратуре. Такође, презентован је акустички медијум са температуром кон-тролисаним градијентом индекса преламања, као и његова примену у температурно контролисаном акустичком фокусирању.
Metamaterijali su veštački medijumi sastavljeni od jediničnih ćelija manjih od talasne dužine, projektovani na poseban način da pri propagaciji talasa ispoljavaju neobične osobine koje se inače ne sreću u prirodi. Većina istraživanja u ovoj oblasti fokusira se na elektromagnetske metamaterijale. U ovoj disertaciji prezentovani su rezultati u novom multidisciplinarnom polju metamaterijala u akustici i realizacija nove nekonvencionalne propagacije talasa primenom jediničnih ćelija metamaterijala. Naučni doprinos ove disertacije su tri nova tipa modova propagacije talasa i njihova kontrola novim projektovanim jediničnim ćelijama metamaterijala. U disertaciji je teorijski analizirana i eksperimentalno pokazana nova klasa CNZ (eng. compressibility-near-zero) akustičke propagacije postignute Helmholcovim rezonatorom. Data je zatvorena analitička formula za efektivnu stišljivost jedinične ćelije, a zatim je pokazano da postoje dve frekvencije koje podržavaju CNZ propagaciju. Takođe, predložena je nova jedinična ćelija sa efektivnom gustinom Lorencovog tipa, izvedena je zatvorena analitička formula za njenu efektivnu gustinu i pokazane su „levoruka“, evanescentna i DNZ (eng. density-near-zero) propagacija akustičkih talasa. Na kraju, po prvi put je pokazano da se površinski akustični talas koji se prostire na granici između fluida i čvrste izbrazdane površi može efikasno kontro-lisati samo promenom temperature, dok geometrija izbrazdane površi ostaje nepromenjena. Ovo otvara mogućnosti za brojne nove primene gde je potrebna lakoća eksternog podešavanja. Prateći izloženu teoriju, demonstrirano je zarobljavanje zvuka kontrolisano temperaturom, kao i njegova primena u akustičkoj spektralnoj analizi i merenju tempe-rature. Takođe, prezentovan je akustički medijum sa temperaturom kon-trolisanim gradijentom indeksa prelamanja, kao i njegova primenu u temperaturno kontrolisanom akustičkom fokusiranju.
Hemmatian, Zahra <1980>. "Nano-fabrication of complex functional structures using non- conventional lithography." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6476/1/Tesi_dottorato_ZHemmattian.pdf.
Повний текст джерелаHemmatian, Zahra <1980>. "Nano-fabrication of complex functional structures using non- conventional lithography." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6476/.
Повний текст джерелаSegarra, Almela Candela. "Homogeneous catalysts for green processes and non-conventional NHC-based complexes." Doctoral thesis, Universitat Jaume I, 2014. http://hdl.handle.net/10803/669080.
Повний текст джерелаBrizek, Jason M. Morris Erwin C. "A non-conventional interdiction strategy for the global war on terror." Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Jun%5FBrizek.pdf.
Повний текст джерелаThesis Advisor(s): Peter J. Gustaitis II. "June 2007." Includes bibliographical references (p. 95-104). Also available in print.
Lemmer, Hendrik Jacobus Righard. "Didanosine and lopinavir : non-conventional solid-states / Hendrik Jacobus Righard Lemmer." Thesis, North-West University, 2011. http://hdl.handle.net/10394/8503.
Повний текст джерелаThesis (Ph.D. (Pharmaceutics))--North-West University, Potchefstroom Campus, 2012
Morris, Erwin C. III, and Jason Brizek. "A non-conventional interdiction strategy for the global war on terror." Thesis, Monterey, California. Naval Postgraduate School, 2007. http://hdl.handle.net/10945/3485.
Повний текст джерелаDuhindan, Nadarajah. "Lymphokine secretion patterns of non-conventional T cells in the mouse." Thesis, University of Newcastle Upon Tyne, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246092.
Повний текст джерелаUbogu, Emamode Akpofure. "Non-conventional pollutant species measurement and prediction from a gas turbine." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/13304/.
Повний текст джерелаSun, Yifan. "Theory of mode-locked lasers based on non-conventional cavity modes." Thesis, université Paris-Saclay, 2021. http://www.theses.fr/2021UPASP003.
Повний текст джерелаThis PhD thesis mainly addresses the dynamics and the robustness of a novel concept of mode locking in ultracompact semiconductor nanolasers. Such a nanolaser exhibits Hermite-Gaussian modes created by a harmonic photonic cavity to confine light. This maps the optical cavity into quantum mechanical harmonic oscillator, with evenly spaced eigenfrequencies, an essential requirement for mode locking. The possible nonlinear regimes are described by the Gross-Pitaevskii equation with a parabolic potential and nonlinear terms describing gain and absorption. To investigate these dynamical behaviors, direct numerical simulations are mainly implemented. Continuation calculations are also performed using pde2path.First, the mode competition for gain among Hermite-Gaussian modes in the absence of saturable absorption is investigated and shown to be very different from usual resonators.Second, mode locking is predicted to occur with instantaneous saturation of gain and absorption over a broad range of parameters, corresponding to the emergence of dissipative soliton and multisoliton solutions. The mode locking period is controlled by the design of the photonic potential, and not by the cavity length. The dissipative soliton is well described by the coherent state of a quantum mechanical oscillator, namely a Gaussian envelope oscillating without deformation.Third, in the regime of noninstantaneous gain and absorption saturation, different dynamical behaviors of the nanolaser are obtained by varying the gain and the absorption. These different regimes, including Q-switching, Q-switched mode locking, and CW mode locking, are described in detail, illustrating the rich physics of this nonlinear system. The influence of the Henry factor on the mode locking is also discussed. Moreover, similar dynamical behaviors using spatially separated gain and absorber sections inside the cavity are obtained.Fourth, the robustness of mode locking of the Hermite-Gaussian modes to the disorder of the harmonic cavity is investigated in details. It includes the effect of non-parabolicity of the potential and the random errors in the shape of the potential
Ramakrishnan, Vijay. "Calibration and data reduction algorithms for non-conventional multi-hole pressure probes." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969.1/52.
Повний текст джерелаRideout, Elizabeth. "The experience of learning and teaching in a non-conventional nursing curriculum." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0005/NQ41495.pdf.
Повний текст джерелаKorge, Sandra [Verfasser]. "A non-conventional nuclear import pathway for circadian clock proteins / Sandra Korge." Berlin : Freie Universität Berlin, 2016. http://d-nb.info/1122111142/34.
Повний текст джерела