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Rozprawy doktorskie na temat „Hybride uav”

Autor: Grafiati

Data publikacji: 1 lutego 2025

Data aktualizacji: 31 lipca 2025

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1

Sansou, Florian. "Contrôle actif d'un micro-drone convertible face à la turbulence." Electronic Thesis or Diss., Toulouse, École nationale de l’aviation civile, 2024. http://www.theses.fr/2024ENAC0003.

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L'objectif du projet CATMAV est d'étudier le contrôle d'un micro-drone de type « tilt-wing » en environnement turbulent. La configuration générale est basée sur le principe d'un drone avion avec un fuselage classique dont l'aile est capable de basculer au cours du vol. Ce type de configuration convertible a de nombreux atouts dont une capacité de décollage et atterrissage vertical tout en gardant de bonnes performances en vol de croisière. Une importante limitation est la robustesse en présence de turbulences, notamment en milieu urbain, montagneux ou maritime. Une des innovations de ce projet

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Hung, David, Kennon McKeever, and Ricardo Ramirez. "HYBRID AUTOMATED UAV TARGET RECOGNITION SYSTEM." International Foundation for Telemetering, 2017. http://hdl.handle.net/10150/626985.

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Accurate image classification is one of the core challenges in computer vision. At the annual AUVSI SUAS competition, this challenge is faced in the form of ground target classification from an unmanned aerial vehicle (UAV). Additionally, due to the constraints imposed by the UAV platform, the system design must consider factors such as size, weight, and power consumption. To meet performance requirements while respecting such limitations, the system was broken into two subsystems: an onboard subsystem and a ground based subsystem.

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Song, H. "A hybrid martian VTOL UAV: design, dynamics and control." Thesis, University of Surrey, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493040.

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Meyer, Danielle L. "Energy Optimization of a Hybrid Unmanned Aerial Vehicle (UAV)." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1523493111005807.

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Thotakura, Sushant. "CO-Design of a Group-5 Power-Split Hybrid Electric UAV." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1613750848692102.

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Sommer-Marquez, Alicia Estela. "Retención de clorofila en Hidrotalcitas." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2013. http://www.theses.fr/2013ENCM0002/document.

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Dans les expériences modélisant la photosynthèse, une bonne dispersion des molécules de chlorophylle est requise. Afin d'obtenir cette bonne dispersion, une solution consiste à les ancrer à un hôte. Dans cette étude, des nouveaux matériaux hybrides sont synthétisés en utilisant des hydrotalcites et un dérivé de la chlorophylle : la chlorophylline. La chlorophylline est incorporée et dispersée dans les hydrotalcites par co-précipitation ou pendant la reconstruction des hydrotalcites. Dans cette thèse est également discuté l'effet d'une irradiation par micro-onde. Dans tous les cas sont obtenus

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Glassock, Richard R. "Design, modelling and measurement of hybrid powerplant for unmanned aerial vehicles (UAVs)." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/61052/1/Richard_Glassock_Thesis.pdf.

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The success or effectiveness for any aircraft design is a function of many trade-offs. Over the last 100 years of aircraft design these trade-offs have been optimized and dominant aircraft design philosophies have emerged. Pilotless aircraft (or uninhabited airborne systems, UAS) present new challenges in the optimization of their configuration. Recent developments in battery and motor technology have seen an upsurge in the utility and performance of electric powered aircraft. Thus, the opportunity to explore hybrid-electric aircraft powerplant configurations is compelling. This thesis c

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Arantes, Márcio da Silva. "Hybrid qualitative state plan problem and mission planning with UAVs." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-05122017-083420/.

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This paper aims to present the thesis developed in the Doctoral Programin Computer Science and Computational Mathematics of the ICMC/USP. The thesis theme seeks to advance the state of the art by solving the problems of scalability and representation present in mission planning algorithms for Unmanned Aerial Vehicle (UAV). Techniques based on mathematical programming and evolutionary computation are proposed. Articles have been published, submitted or they are in final stages of preparation.These studies report the most significant advances in the representation and scalability of this problem

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9

Allouche, Abdel Rahman. "Growth dynamics of Hybrid halide perovskite layers and its precursors in UHV : atomic scale insight from real-time Grazing Incidence Fast Atom Diffraction." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP027.

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Les pérovskites hybrides halogénées se sont révélées très prometteuses pour produire à moindre coût des dispositifs optoélectroniques performants. En tant que matériau actif des cellules solaires, ces matériaux ont désormais atteint un rendement record de conversion de puissance (PCE) de 26 %, similaire à celui du silicium cristallin. Malgré des efforts de recherche importants, de nombreux défis demeurent, notamment sur les problèmes de stabilité, la compréhension du rôle des défauts et enfin sur l’accès à leur dynamique de cristallisation. Pour atteindre ces objectifs, le dépôt sous vide appa

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10

Åkesson, Elsa, Maximilian Kempe, Oskar Nordlander, and Rosa Sandén. "Unmanned Aerial Vehicle Powered by Hybrid Propulsion System." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-277115.

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I samband med den globala uppvärmningen ökar efterfrågan för rena och förnybara bränslen alltmer i dagens samhälle. Eftersom flygindustrin idag är ansvarig för samma mängd växthusgaser som all motortrafik i Sverige, skulle ett byte till en avgasfri energikälla för flygfarkoster vara ett stort framsteg. Därför har projektet genom modellering framtagit ett hybridsystem av ett batteri och en bränslecell och undersökt hur kombinationen av olika storlekar på dem presterar i en driftcykel. Då batterier har hög specifik effekt men är tunga, kompletteras de med fördel av bränsleceller, som är lättvikt

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Xu, Jie S. M. Massachusetts Institute of Technology. "Learning to fly : computational controller design for hybrid UAVs with reinforcement learning." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122772.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 51-54).<br>Hybrid unmanned aerial vehicles (UAV) combine advantages of multicopters and fixed-wing planes: vertical take-off, landing, and low energy use. However, hybrid UAVs are rarely used because controller design is challenging due to its complex, mixed dynamics. In this work, we propose a method to automate this design process by training a mode-free, model-agnostic neural network contro

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Jacobsson, David. "Learning to Fly: Upgraded Aerodynamics and Control Surfaces." Thesis, KTH, Flygdynamik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-299417.

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In recent times the unmanned quadcopter aircraft has been used for a widening range of applications, but for longer distances it still falls short of conventional airplanes in terms of energy usage. There exists hybrid configurations of unmanned aircraft which combine the mobility of quadcopters and the range of fixed-wing aircraft. The transition between the hovering mode and the gliding mode, however, is a complex non-linear control problem. To solve this a recent study applied a neural network as a closed loop controller. This controller was capable of seamless mode transition and could be

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Berrebi, Mickael. "Développement de vitrages organiques et hybrides à base de réseaux interpénétrés de polymères pour la protection des biens culturels." Thesis, Cergy-Pontoise, 2015. http://www.theses.fr/2015CERG0783/document.

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Ces travaux de thèse se positionnent au cœur des problématiques du patrimoine et notamment de la conservation préventive des œuvres d'art. Pour apporter aux musées une solution à faible coût capable de répondre aux exigences fixées dans le cadre de la protection du patrimoine culturel, nous avons développé de nouveaux vitrages polymères permettant de protéger les œuvres sans en altérer leur perception par le public. Ces matériaux pourront, à terme, tenter de remplacer les vitrages de type poly(méthacrylate de méthyle) (PMMA), très largement utilisés, mais dont le principal inconvénient est sa

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14

Sinnamon, Ryan R. "Analysis of a Fuel Cell Combustor in a Solid Oxide Fuel Cell Hybrid Gas Turbine Power System for Aerospace Application." Wright State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1401189772.

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Klímová, Eliška. "Mechanické a transportní vlastnosti hybridních hydrogelových systémů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-444534.

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This master´s thesis deals with the study on mechanical and transport properties of hybrid hydrogel systems. Considering applications of hydrogels, especially in chemical industry, pharmacy, or eventually medical applications, for the study gellan and alginate-based hydrogels were selected. In order to compare individual characteristics physical and hybrid hydrogels were prepared. Gellan hydrogels were prepared in deionization aqua solution, calcium chloride dihydrate and tween 80 solution. Alginate hydrogels were prepared in calcium chloride dihydrate solution as well, and polyacrylamide with

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Gerhard, William Edward III. "Pseudo Doppler Direction Finding System for Localizing Non-Cooperative VHF Transmitters with a Hybrid UAS." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/92199.

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Current radio direction finding techniques are limited in flexibility and focus on specific applications. Commercial off the shelf systems exist for a wide range of applications from navigation to search and rescue and wildlife tracking. However these systems rely on commercially available VHF receivers and are limited in transmission modulation techniques and frequency ranges. The majority of these systems are expensive which places them outside the reach of most individuals while the current open source designs require specialized skills and knowledge to build. The goal of this work was to

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Wang, Xiaojiang. "Polyester Based Hybrid Organic Coatings." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1340906197.

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Sánchez, Camilo André Pereira Contreras. "Manejo de poda em cultivares de uva para processamento /." Botucatu, 2020. http://hdl.handle.net/11449/192361.

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Orientador: Marco Antonio Tecchio<br>Resumo: Uvas para processamento de suco têm sido implantadas em regiões não tradicionais de produção para atender o aumento do consumo de suco de uva pela população brasileira. Com isso, o estudo do manejo dessas cultivares é imprescindível para a maior produção e qualidade do suco de uva. O objetivo desse estudo foi avaliar as características produtivas e qualitativas de cultivares de uva para processamento, cultivadas em São Manuel, SP, em dois sistemas de poda: curta e mista. O experimento foi realizado no período de agosto de 2017 a janeiro de 2019. Os

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Garnier, Jérôme. "Elaboration de latex nanostructurés à base de poly(chlorure de vinylidène) par polymérisation en émulsion." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2012. http://www.theses.fr/2012ENCM0011.

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Les emballages alimentaires et pharmaceutiques doivent de nos jours répondre à de nombreux critères : ils doivent non seulement préserver le produit emballé, mais également être inoffensifs, économes en énergie et jetables. Les polymères barrières ont permis de répondre à ces besoins, en offrant des alternatives à des matériaux plus demandeurs en énergie et plus lourds tels que le verre ou les métaux, tout en conservant une faible perméabilité à l’eau et/ou à l’oxygène. Parmi la grande variété de polymères barrières existants, les copolymères du poly(chlorure de vinylidène) (PVDC) offrent une

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20

Baina, Jamal. "Codage hybride adaptatif d'images en vue de la transmission à bas débit : logiciel et matériel." Metz, 1992. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/1992/Baina.Jamal.SMZ924.pdf.

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Les techniques de codage d'image en vue de la transmission à bas débit sont nombreuses et se différencient par leurs performances et par leurs algorithmes. Le procédé de codage que nous avons élaboré se caractérise par l'application de la transformée en cosinus discrète (TCD) suivie par une quantification vectorielle. Cette méthode exploite une classification des formes perceptibles dans l'espace transformé. Un exemple de système de codage-décodage est présenté dans ce mémoire. Il est conçu autour de processeur parallèle transputer et de processeur du signal<br>Image coding methods are used fo

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Bacciaglia, Antonio. "Design and Development of a Propulsion System for a Water-Air Unmanned Vehicle." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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This work aims to contribute on the design of a Bimodal Unmanned Underwater and Air System (BUUAS). This research project will first present background informations of current hybrid UAV concepts with a focus on the different types of propulsion mechanisms used in air/water transition. Then a brief description of BUUAS will lead to requirements for the transition mechanism that this work aims to develop. After a section dedicated to the description of a short-impulse thruster layout, theoretical and experimental approaches are used to determine the amount of thrust generated. As second design

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Johansson, Åke, and Joel Wikner. "Learning-Based Motion Planning and Control of a UGV With Unknown and Changing Dynamics." Thesis, Linköpings universitet, Reglerteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-176923.

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Research about unmanned ground vehicles (UGVs) has received an increased amount of attention in recent years, partly due to the many applications of UGVs in areas where it is inconvenient or impossible to have human operators, such as in mines or urban search and rescue. Two closely linked problems that arise when developing such vehicles are motion planning and control of the UGV. This thesis explores these subjects for a UGV with an unknown, and possibly time-variant, dynamical model. A framework is developed that includes three components: a machine learning algorithm to estimate the unknow

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Nebioglu, Ahmet. "NETWORK FORMATION AND THERMO-MECHANICAL PROPERTIES OF PHOTO-CURING HYBRID COATINGS." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1145166725.

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Svoboda, Tomáš. "Příprava a vlastnosti organokřemičitých pojiv pro nanočásticové vrstvy oxidu titaničitého." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-316147.

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This diploma thesis deals with the synthesis of an organosilica polymer which could be used as a binder for titanium dioxide photocatalytic layers. The main reason for incorporating the binder into the photocatalytic layers is not only the improving of the mechanical properties, but above all, the binder could help with production of low-temperature photocatalytic layers, that could be applied to heat-sensitive materials such as plastic materials. This could create layers on flexible materials that could be easily made into any shape. The work focuses on the synthesis of organosilica polymer f

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Laurent, Adèle. "Etude de phénomènes électroniques de macromolécules à l'aide de méthodes hybrides QM-MM." Thesis, Nancy 1, 2010. http://www.theses.fr/2010NAN10075/document.

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Les méthodes hybrides alliant la mécanique quantique et la mécanique moléculaire (QM/MM) sont des outils adéquats pour traiter des systèmes biologiques. Les phénomènes électroniques souvent étudiés sur des petites molécules ont, dès lors pu être envisagés dans des environnements macromoléculaires. Ce travail explore trois phénomènes électroniques en présence d'un environnement protéique: l'absorption, la capture électronique et les ionisations de coeur. Nous avons employé les derniers développements de la méthode QM/MM {Local Self-Consistent Field} (LSCF) pour traiter la jonction covalente ent

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Moraes, Caldeira Izabel. "Formulation des solutions hybrides pour la texturation de surfaces hydrophobes par la technique UV-NIL." Electronic Thesis or Diss., Lyon 1, 2025. http://www.theses.fr/2025LYO10050.

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Cette recherche porte sur le développement de solutions innovantes réticulées sous UV pour la fabrication de revêtements hydrophobes, en utilisant la technique UV-NIL (Lithographie par Nano-Impression UV) pour la texturation de motifs à l’échelle micrométrique. Ces solutions ont été formulées à base de SilSesquioxane Oligomérique Polyédrique (POSS) pour des applications liées au contrôle du mouillage de surface, en particulier l’hydrophobie. Le développement de ces solutions a été guidé par un cahier des charges prenant en compte des critères tribologiques, chimiques et mécaniques, avec des ob

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Hasheminasab, S. Abed. "Bismaleimide Methacrylated Polyimide-Polyester Hybrid UV-Curable Powder Coating." University of Akron / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=akron1586906287945286.

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Kunst, Sandra Raquel. "Filmes híbridos modificados com agentes flexibilizantes para uso como revestimento barreira e como pré-tratamento de folha de flandres para aplicação de tinta UV." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/131364.

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Um dos principais problemas da folha de flandres utilizada no setor de embalagens é a adesão dos revestimentos UV sobre o substrato devido à presença de óxidos na superfície. Dessa forma, o emprego de pré-tratamentos superficiais se faz necessário, e o uso de revestimentos híbridos tem sido proposto para melhorar a aderência e a resistência à corrosão. Contudo, esses revestimentos tendem a serem frágeis e não suportam deformação mecânica. No presente trabalho, os filmes híbridos foram depositados sobre a folha de flandres a fim de avaliar o seu desempenho como revestimento protetor e como pré-

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Chakraborty, Ruby. "Development of Novel Cycloaliphatic Siloxanes for Thermal and UV-curable Applications." University of Akron / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1207682542.

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Manoel, Diego da Silva [UNESP]. "Materiais híbridos de sílica/orgânico dopados com rodamina-B: propriedades luminescentes e emissão laser randômico." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/148710.

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Submitted by Diego da Silva Manoel null (diegosma@rc.unesp.br) on 2017-02-05T16:40:20Z No. of bitstreams: 1 Dissertação Diego.pdf: 1793320 bytes, checksum: ba0a17055ebb3486b214146535165ef9 (MD5)<br>Approved for entry into archive by Juliano Benedito Ferreira (julianoferreira@reitoria.unesp.br) on 2017-02-06T18:25:08Z (GMT) No. of bitstreams: 1 manoel_ds_me_rcla.pdf: 1793320 bytes, checksum: ba0a17055ebb3486b214146535165ef9 (MD5)<br>Made available in DSpace on 2017-02-06T18:25:08Z (GMT). No. of bitstreams: 1 manoel_ds_me_rcla.pdf: 1793320 bytes, checksum: ba0a17055ebb3486b214146535165ef9 (M

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Fayon, Pierre. "Développement d’un schéma de couplage QM/MM (Quantum Mechanic / Molecular Mechanic) pour les états excités localisés dans les matériaux hybrides organique-inorganiques." Thesis, Pau, 2011. http://www.theses.fr/2011PAUU3018/document.

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Ces dernières années, la mise au point de matériaux hybrides organique-inorganiques a fait l’objet d’un intérêt grandissant dans le domaine de la chimie verte. Les matériaux hybrides a base de silice fonctionnalisée par des molécules organiques possèdent des propriétés modulables, permettant leur application dans plusieurs domaines (photochimie, médecine, dépollution . . .). D’un point de vue théorique, le challenge d’une telle étude résulte dans la détermination des propriétés d’optiques. En effet, la taille de ces systèmes ne permet pas un traitement de ces derniers d’un point de vue stricte

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Jesus, Agnaldo Oliveira de. "As bibliotecas nos polos de apoio presencial de educação à distância no estado da Bahia." Instituto de Ciência da Informação, 2015. http://repositorio.ufba.br/ri/handle/ri/18686.

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Submitted by Valdinei Souza (neisouza@hotmail.com) on 2015-10-09T21:03:43Z No. of bitstreams: 1 AS BIBLIOTECAS NOS POLOS DE APOIO PRESENCIAL DE EDUCAÇÃO A DISTÂNCIA NO ESTADO DA BAHIA.pdf: 1369770 bytes, checksum: c83e9b974c6a08376ad328be09056310 (MD5)<br>Approved for entry into archive by Urania Araujo (urania@ufba.br) on 2016-03-04T21:23:36Z (GMT) No. of bitstreams: 1 AS BIBLIOTECAS NOS POLOS DE APOIO PRESENCIAL DE EDUCAÇÃO A DISTÂNCIA NO ESTADO DA BAHIA.pdf: 1369770 bytes, checksum: c83e9b974c6a08376ad328be09056310 (MD5)<br>Made available in DSpace on 2016-03-04T21:23:36Z (GMT). No. of b

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Narayanan, Nair Maya. "Functionalization of epitaxial graphene by metal intercalation and molecules." Phd thesis, Université de Haute Alsace - Mulhouse, 2013. http://tel.archives-ouvertes.fr/tel-01064523.

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In this thesis, we have explored the possibilities to realize a Graphene Based Hybrid structures (GBHs) by the functionalization of a graphene layer on both sides. The first chapter gives a general introduction about graphene and a literature review of different metal intercalations on graphene. The second chapter explains the experimental techniques used in this work. In chapter 3, we studied the functionalization of epitaxial graphene on SiC(0001) by gold intercalation. With the help of Scanning Tunneling Microscopy, we have evidenced and characterized different intercalation modes such as t

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Mhiri, Akram. "Elaborations, caractérisations et études spectroscopiques des composés hybrides organiques-inorganiques R2SnBr6 avec R=N(CH3)4 et R=N(CH3-CH2)4." Thesis, Le Mans, 2020. http://www.theses.fr/2020LEMA1032.

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Ce travail s'est inscrit dans le cadre d’un projet de recherche qui vise à synthétiser et caractériser de nouveaux matériaux hybrides organiques-inorganiques pouvant être utilisés dans la fabrication de cellules photovoltaïques, mais avec des éléments moins polluants que les composés actuellement proposés. Pour cela nous avons élaboré et étudié deux nouveaux composés à base d'étain : le bis tétraméthylammonium hexabromostannate ([N(CH₃)₄]₂SnBr₆), et le bis-tétraéthylammonium hexabromostannate ([CH₃-CH₂]₄SnBr₆). Les études expérimentales sont basées sur des analyses thermiques (ATD, DSC, ATG),

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Scarpellini, M. "ADVANCED MATERIALS: PREPARATION, STUDY AND OPTIMIZATION OF THIN FILM FOR OPTO-ELECTRONIC DEVICE." Doctoral thesis, Università degli Studi di Milano, 2010. http://hdl.handle.net/2434/150151.

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The term “optoelectronic devices” is by now used for devices in which both electrons and photons are essential for their operation, as a natural evolution from the definitions of electronic devices that involved only electrons and holes in their operation and of photonic devices that involved only photons in their operation. One of the new lighting technologies which emerged within the past two decades and has the potential of becoming more energy-efficient then the existing light sources, is the Solid State Lighting technology of Organic Light Emitting Diodes (OLEDs). In general, the basic OL

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Candel, Busquets Inmaculada. "Functional silica materials for controlled release, sensing and elimination of target molecules." Doctoral thesis, Universitat Politècnica de València, 2014. http://hdl.handle.net/10251/39101.

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La presente tesis doctoral titulada “Materiales de sílice funcionales para la liberación controlada, detección y eliminación de moléculas de interés” se centra en el diseño y desarrollo de materiales híbridos orgánico-inorgánicos mediante la aplicación de los conceptos de Química Supramolecular. Durante el desarrollo de la presente tesis doctoral se han preparado y caracterizado diferentes materiales de base silícea para distintas aplicaciones. La primera parte de la tesis se centra en el desarrollo de materiales de base silícea capaces de variar su comportamiento fluorescente en

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Wissmann, Paul J. "Simultaneous approach to model building and process design using experimental design application to chemical vapor deposition /." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26543.

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Thesis (Ph.D)--Chemical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Grover, Martha; Committee Member: Garmestani, Hamid; Committee Member: Hess, Dennis; Committee Member: McDowell, David; Committee Member: Nenes, Athanasios; Committee Member: Realff, Matthew. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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Junay, Alexandra. "Étude des propriétés électroniques et de transport multi-échelle de jonctions tunnel Au/Alcanethiols/n-GaAs(001)." Thesis, Rennes 1, 2015. http://www.theses.fr/2015REN1S024/document.

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Les hétérostructures hybrides organique-inorganique présentent des propriétés intéressantes, notamment pour des applications dans le domaine de l’électronique et de la spintronique. Notre intérêt s’est porté particulièrement sur la réalisation d’hétérostructures de type Métal/Monocouche organique/Semiconducteur, dont l’étape de reprise de top-contact métallique reste actuellement un verrou majeur à la réalisation de telles jonctions. L’expérience de l’équipe sur des hétérostructures de type MOS (Métal/Oxyde/Semiconducteur), ainsi que les différentes techniques de surface et de transport dispon

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Gingerich, Mark Bryant. "Joining Carbon Fiber and Aluminum with Ultrasonic Additive Manufacturing." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1461161262.

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Li, Shanghua. "Engineering nanomaterials with enhanced functionality." Licentiate thesis, KTH, Materials Science and Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3906.

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<p>This thesis deals with the engineering of novel nanomaterials, particularly nanocomposites and nanostructured surfaces with enhanced functionalities. The study includes two parts; in the first part, an in situ sol-gel polymerization approach is used for the synthesis of polymer-inorganic hybrid material and its exceptional transparent UV-shielding effect has been investigated. In the second part, electrodeposition process has been adapted to engineer surfaces and the boiling performance of the fabricated nanostructured surfaces is evaluated.</p><p>In the first part of the work, polymer-inor

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Haaken, Daniela. "Innovative Desinfektionsverfahren zur Brauchwassergewinnung in der dezentralen Abwasserbehandlung - Elektrolyse und UV/Elektrolyse-Hybridtechnik." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-166834.

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According to estimates of the United Nations Environment Programme (UNEP), more than 1.8 billion people will be living in countries or regions with absolute water scarcity by 2025. The pressure on water resources is increased not only in arid and semiarid regions, but also in fast growing megacities around the world as a result of, amongst other factors, the changing nutritional and consumer behavior (rising living standards). Over 90 % of the annual water consumption of the newly industrializing and developing countries in the arid and semiarid climate zone is used for agricultural irrigation

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Jenkins, Toni E. "Introgression of genes from rape to wild turnip." Lincoln University, 2005. http://hdl.handle.net/10182/1844.

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Introgression of genes from crops into ruderal populations is a multi-step process requiring sympatry, synchronous flowering, chromosomal compatibility, successful pollination and development of the zygote, germination, establishment and reproduction of hybrid progeny. The goal of this thesis was to generate data on as many steps in this process as possible and integrate them into a predictive statistical model to estimate the likelihood of successful introgression under a range of scenarios. Rape (Brassica napus) and wild turnip (B. rapa var. oleifera) were used as a model system. A homozygou

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Liang, Chin-Chuan, and 梁錦釧. "The Study on the Key Success Factors for UAV Industry - An Empirical Study of Hybrid-VTOL UAV." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/cdzfxm.

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碩士<br>國立臺北商業大學<br>企業管理系研究所<br>107<br>UAV (unmanned aerial vehicle，UAV) industry is an innovation-driven technology sector. Other than convenience and versatility, the "unmanned" characteristics of UAV provides a low-cost alternative to save invaluable human lives and thus became a brand-new blooming industry. This research adopt the FAHP (fuzzy multi-criteria decision-making method) method to study the newly emerging Hybrid-Wing VTOL (Vertical Take Off and Landing) UAV industry with four major aspects—technology, organization, environment, and cost. Seventeen facets, under the four major aspec

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Yu-MingSyu and 許育銘. "Hybrid Solution for UAV Multiple Target Path planning using Genetic Algorithm with Dynamic Programming." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/76642335772446190569.

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碩士<br>國立成功大學<br>航空太空工程學系<br>103<br>The major objective of this thesis is to present a hybrid method by integrating, Genetic Algorithm with Dynamic Programming, for solving multiple target path planning in implementation into UAV system. In order to guarantee the safety requirement and feasibility for path planning, the flight path planning system (FPPS) necessarily consider the path security, UAV’s capability and so on. The Virtual Flight Map is built at first and the path planning would program in the map by algorithms. Between two target locations, Genetic Algorithm finds the optimal path wi

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Matlock, Jay Michael Todd. "Evaluation of hybrid-electric propulsion systems for unmanned aerial vehicles." Thesis, 2019. http://hdl.handle.net/1828/11484.

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The future of aviation technology is transitioning to cleaner, more efficient and higher endurance aircraft solutions. As fully electric propulsion systems still fall short of the operational requirements of modern day aircraft, there is increasing pressure and demand for the aviation industry to explore alternatives to fossil fuel driven propulsion systems. The primary focus of this research is to experimentally evaluate hybrid electric propulsion systems (HEPS) for Unmanned Aerial Vehicles (UAV) which combine multiple power sources to improve performance. HEPS offer several potential benefit

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"Power Management for Fuel Cell and Battery Hybrid Unmanned Aerial Vehicle Applications." Master's thesis, 2016. http://hdl.handle.net/2286/R.I.40735.

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abstract: As electric powered unmanned aerial vehicles enter a new age of commercial viability, market opportunities in the small UAV sector are expanding. Extending UAV flight time through a combination of fuel cell and battery technologies enhance the scope of potential applications. A brief survey of UAV history provides context and examples of modern day UAVs powered by fuel cells are given. Conventional hybrid power system management employs DC-to-DC converters to control the power split between battery and fuel cell. In this study, a transistor replaces the DC-to-DC converter which lower

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Yong-HuiHuang and 黃詠暉. "Design and Implement of OPC UA Aggregating Server Based on Hybrid Architecture of Node Updating." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/d56ht7.

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碩士<br>國立成功大學<br>工程科學系<br>107<br>In view of the messy in the communication protocols in the industry, many companies such as Microsoft have proposed the OPC UA protocol to try to standardize the entire industry to effectively integrate various vendors. Due to the excessive sources of data and the lack of collation and integration, the academic community and the industry have the prototype of aggregating servers. To solve the problem of excessive network load caused by traditional passive updating node, the method is proposed to combine passive updating and OPC UA Pub/Sub which is the newest sta

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Boruah, Buddha Deka. "Coupled Optical and Electrochemical Properties of ZnCo2O4 for Radiation Sensitive Supercapacitor : An Approach Towards Self-powered Photosensitive Energy Storage." Thesis, 2017. http://etd.iisc.ac.in/handle/2005/4242.

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Recently, the fields of energy conversion and storage have drawn great interests in the research community due to the wide range of practical applications in the society. Among them, photodetector (PD) and supercapacitor (SC) have attracted potential imprints for energy conversion and storage applications. This thesis is thus focused on the fabrication of efficient self-powered ultraviolet (UV) PD and SC based on optically and electrochemically active heterostructure materials. Firstly, self-powered UV PD is explored based on one dimensional zinc oxide (ZnO) nanorods (NRs). The charge carrie

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Banerjee, Sreetama. "HED-TIE: A wafer-scale approach for fabricating hybrid electronic devices with trench isolated electrodes and its application in sensing devices." 2017. https://monarch.qucosa.de/id/qucosa%3A34062.

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Die organisch-anorganische Hybridelektronik bietet verschiedene Möglichkeiten zur Entwicklung neuartiger Bauelemente, welche die Vorteile von organischen und anorganischen Halbleitern vereinen. Planare Bauelemente werden typischerweise mittels Schattenmasken-basierter Strukturierung hergestellt. Ein Grund hierfür ist die Empfindlichkeit organischer Halbleiter gegenüber Ultraviolettem Licht und Lösungsmitteln, welche in den Standard-Photolithographieprozessen eingesetzt werden. Die Schattenmasken-Strukturierung führt allerdings zu Bauelementen mit kleinsten Abmessungen im Mikrometerbereich. Für

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Haaken, Daniela. "Innovative Desinfektionsverfahren zur Brauchwassergewinnung in der dezentralen Abwasserbehandlung - Elektrolyse und UV/Elektrolyse-Hybridtechnik." Doctoral thesis, 2014. https://tud.qucosa.de/id/qucosa%3A28686.

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According to estimates of the United Nations Environment Programme (UNEP), more than 1.8 billion people will be living in countries or regions with absolute water scarcity by 2025. The pressure on water resources is increased not only in arid and semiarid regions, but also in fast growing megacities around the world as a result of, amongst other factors, the changing nutritional and consumer behavior (rising living standards). Over 90 % of the annual water consumption of the newly industrializing and developing countries in the arid and semiarid climate zone is used for agricultural irrigation

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