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Dissertations / Theses on the topic 'Hybrid trees'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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1

Collins, Joshua Stewart. "Rekernelisation Algorithms in Hybrid Phylogenies." Thesis, University of Canterbury. Mathematics and Statistics, 2009. http://hdl.handle.net/10092/2852.

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It has become well known that an evolutionary tree is inadequate to represent fully the history of life. Two possible ways of dealing with this are the rooted subtree prune and regraft distance between a pair of trees, which measures how different they are, and the slightly more biologically sound hybridisation number of a set of trees that attempts to determine the minimum number of hybrid events that must have occurred for a given set of evolutionary trees. When characterised via agreement forests both problems are, although NP hard, fixed parameter tractable---meaning the problem can be con

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2

Neal, Amy Elizabeth Long. "Utilizing hybrid poplar trees to phytoremediate soils with excess phosphorus." College Park, Md. : University of Maryland, 2005. http://hdl.handle.net/1903/2839.

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Thesis (M.S.) -- University of Maryland, College Park, 2005.<br>Thesis research directed by: Dept. of Natural Resource Sciences and Landscape Architecture. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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3

Huang, Jessica J. "Life cycle analysis of hybrid poplar trees for cellulosic ethanol." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/40429.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2007.<br>Includes bibliographical references (leaves 38-41).<br>The main purpose of this paper is to assess the energy and environmental benefits of cultivating hybrid poplars as a biomass crop for cellulosic ethanol. A "Life Cycle Assessment" (LCA) methodology is used to systematically evaluate the hybrid poplar's energy input and output as well as greenhouse gas (GHG) emissions. The system boundary is divided into three sections, agriculture, transportation, and ethanol processing. In this LCA, only energy

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4

Breite, Sally Rebecca. "Vapor phase uptake of volatile organic contaminants by hybrid poplar trees." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.mst.edu/thesis/pdf/Sally_Breite_Thesis_09007dcc8040f5ef.pdf.

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Thesis (M.S.)--University of Missouri--Rolla, 2007.<br>Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed October 23, 2007) Includes bibliographical references (p. 54-57).

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5

Carroll, Simon A. "Strategies for Improving Verification Techniques for Hybrid Systems." Case Western Reserve University School of Graduate Studies / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1212713593.

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6

Larsson-Stern, Marie. "Aspects of hybrid larch (Larix x eurolepis Henry) as a potential tree species in southern Swedish forestry /." Alnarp : Southern Swedish Forest Research Centre, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/8907884.pdf.

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Casselman, Chad N. "Effects of Silvicultural Treatments and Soil Properties on the Establishment and Productivity of Trees Growing on Mine Soils in the Appalachian Coalfields." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/32909.

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Coal has been and will continue to be an important energy source in the U.S. for the foreseeable future. Surface mining for coal is one of the methods employed to extract this resource from below the ground. The process of surface mining removes native topsoils and any native vegetation that was support by these native soils. In the Appalachian coal-producing region of the United States, the pre-mining landscape is predominantly forested. Prior to the Surface Mining and Reclamation Act of 1977 (SMCRA), surface mined lands were commonly reclaimed to forests. Subsequent to the passage of SM

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8

Shah, Hamzei G. Hossein. "Decision tree learning for intelligent mobile robot navigation." Thesis, Loughborough University, 1998. https://dspace.lboro.ac.uk/2134/6968.

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The replication of human intelligence, learning and reasoning by means of computer algorithms is termed Artificial Intelligence (Al) and the interaction of such algorithms with the physical world can be achieved using robotics. The work described in this thesis investigates the applications of concept learning (an approach which takes its inspiration from biological motivations and from survival instincts in particular) to robot control and path planning. The methodology of concept learning has been applied using learning decision trees (DTs) which induce domain knowledge from a finite set of

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9

Hassan, Ahmed Mohamed Elsayed. "Designing, Modeling, and Optimizing Transactional Data Structures." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/56656.

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Transactional memory (TM) has emerged as a promising synchronization abstraction for multi-core architectures. Unlike traditional lock-based approaches, TM shifts the burden of implementing threads synchronization from the programmer to an underlying framework using hardware (HTM) and/or software (STM) components. Although TM can be leveraged to implement transactional data structures (i.e., those where multiple operations are allowed to execute atomically, all-or-nothing, according to the transaction paradigm), its intensive speculation may result in significantly lower performance than the

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10

Esler, William Kevin. "On the development and application of indirect site indexes based on edaphoclimatic variables for commercial forestry in South Africa." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/20145.

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Thesis (MScFor)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: Site Index is used extensively in modern commercial forestry both as an indicator of current and future site potential, but also as a means of site comparison. The concept is deeply embedded into current forest planning processes, and without it empirical growth and yield modelling would not function in its present form. Most commercial forestry companies in South Africa currently spend hundreds of thousands of Rand annually collecting growth stock data via inventory, but spend little or no money on the default compartment da

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11

Girard, Nathalie. "Vers une approche hybride mêlant arbre de classification et treillis de Galois pour de l'indexation d'images." Thesis, La Rochelle, 2013. http://www.theses.fr/2013LAROS402/document.

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La classification d'images s'articule généralement autour des deux étapes que sont l'étape d'extraction de signatures suivie de l'étape d'analyse des données extraites, ces dernières étant généralement quantitatives. De nombreux modèles de classification ont été proposés dans la littérature, le choix du modèle le plus adapté est souvent guidé par les performances en classification ainsi que la lisibilité du modèle. L'arbre de classification et le treillis de Galois sont deux modèles symboliques connus pour leur lisibilité. Dans sa thèse [Guillas 2007], Guillas a utilisé efficacement les treill

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Kropf, Carsten. "Hybride Indexstrukturen." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-152297.

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Im Folgenden wird ein Promotionsprojekt zur Implementierung und Optimierung von hybriden Indexstrukturen beschrieben. Die erhöhte Suchperformance wird bei hybriden Indexstrukturen durch einen höheren Aufwand an Vorberechnungen bei Einfügeoperationen erreicht. Dadurch ergibt sich, im Gegensatz zu Ansätzen, welche mehrere Indexstrukturen miteinander verbinden oder getrennte Suchanfragen ausführen eine Effizienz der Reorganisation hybrider Indexstrukturen, die prohibitiv für den Einsatz in den meisten Anwendungen ist. Diese sollen innerhalb des Promotionsprojekts optimiert werden, um eine Einsatz

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13

Flokstra, Brittany Renee. "Ecotoxicogenomic evaluation of hybrid poplar tree phytoremediation of nitro-substituted explosives." Diss., University of Iowa, 2010. https://ir.uiowa.edu/etd/963.

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Poplar (Populus deltoides x nigra DN34) tissue cultures removed 2,4,6-trinitrotoluene (TNT) from an aqueous solution in five days, reducing the toxicity of the solution from highly toxic Microtox® EC value to that of the control. 1,3,5-trinitro-1,3,5-triazacyclohexane (RDX) was taken up by the plant tissue cultures more slowly, but toxicity reduction of the solution was evident. The measurement of toxicity reduction of aqueous solutions containing TNT and RDX was performed using a novel methodology developed for use with the Microtox® testing system. Radiolabeled TNT and RDX were used to confi

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14

Powell, Michael B. "Genetic parameters and evaluation of alternative strategies for the development of superior hybrids of slash and Caribbean pines /." [St. Lucia, Qld.], 2001. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16133.pdf.

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15

Hailemariam, Temesgen. "Leaf area distribution and alternative sampling designs for hybrid spruce tree crowns." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ27153.pdf.

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16

Dimmitt, Mark A. "The Hybrid Palo Verde 'Desert Museum': A New, Superior Tree for Desert Landscapes." University of Arizona (Tucson, AZ), 1987. http://hdl.handle.net/10150/554229.

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A recently released complex hybrid palo verde is described which exhibits the best phenotypic traits of the three species in its parentage. 'Desert Museum' has inherited from Parkinsonia aculeata very rapid growth (up to 2.7 meters, nine feet, per year), sturdy, upright growth habit, and large, bright flowers borne over a long season. From Cercidium spp. it has inherited small leaves. Unlike any species of palo verde, the hybrid is completely unarmed. Preliminary evaluation indicates that 'Desert Museum' is a nearly ideal tree for cultivation in desert climates. It grows to a functional size o

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17

Lou, Wan Chan. "A hybrid model of tree classifier and neural network for university admission recommender system." Thesis, University of Macau, 2008. http://umaclib3.umac.mo/record=b1783609.

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18

Li, Si. "Data acquisition modeling and hybrid coronary tree 3D reconstruction in C-arm CBCT imaging." Thesis, Rennes 1, 2017. http://www.theses.fr/2017REN1S133/document.

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L'angiographie coronarienne RX (ou coronarographie) reste la modalité de référence permettant de déterminer avec précision le degré et le nombre de sténoses coronariennes ainsi que le nombre de vaisseaux atteints. L'objectif de ce travail de thèse de doctorat concerne l'amélioration de la reconstruction 3D des coronaires afin d'améliorer le diagnostic, ainsi que la sécurité et la précision des interventions minimalement invasives. Dans un premier temps, une contribution majeure vise à améliorer l'étape de calibration du système d'imagerie rotationnelle R-X. Premièrement, nous avons donc propos

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19

Waters, Lois Diane. "Relationships Between Hybrid Poplar Tree Extractives and Ground Water Contamination at a Phytoremediation Site." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/31583.

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<p> In 1997, a phytoremediation program began at a creosote-contaminated former railroad tie yard in Oneida, Tennessee with the planting of over 1000 hybrid poplar trees onsite. Creosote, a mixture of hazardous chemicals composed of 85% polycyclic aromatic hydrocarbons (PAH) had entered the site soil and ground water. After planting, a seasonal ground water testing program began that monitored the progress of remediation by measuring the concentration of the 10 predominant PAHs in the contaminant plume: naphthalene, acenaphthylene, acenaphthene, fluorene, phenanthrene, anthracene, fluoranthe

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20

Patton, Roy Lee. "Studies on the use of foliar peroxidase activity as a predictor of relative sensitivity to ozone among selected groups of populus hybrids and other trees /." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487259580263383.

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21

Buswell, Carrie U. "Fate and transport of nitrogen at a deep row biosolids application hybrid poplar tree farm." College Park, Md.: University of Maryland, 2006. http://hdl.handle.net/1903/3918.

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Thesis (M.E.) -- University of Maryland, College Park, 2006.<br>Thesis research directed by: Fischell Dept. of Bioengineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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22

Forero-Romero, Jaime. "PREDICTABILITE, GALAXIES INFRAROUGES ET LENTILLES GRAVITATIONNELLES: APPLICATIONS DE L'APPROCHE HYBRIDE." Phd thesis, Ecole normale supérieure de lyon - ENS LYON, 2007. http://tel.archives-ouvertes.fr/tel-00421120.

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In this work I used a code of galaxy formation (GALICS) to explore three different points that are relevant to the the problem of galaxy formation. The first deals with the method of simulation itself, the second considers the simulation of infrared galaxies within GALICS and the third investigated the role of galaxy formation in measurements of weak gravitational lensing.<br /><br />I examined the predictability of models such as GALICS, using an exploratory test, based on the response of the model to variations in the parameters controlling star formation. I have also proposed a new descript

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23

Salameh, Farah. "Méthodes de modélisation statistique de la durée de vie des composants en génie électrique." Phd thesis, Toulouse, INPT, 2016. http://oatao.univ-toulouse.fr/16622/1/Salameh_Farah.pdf.

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La fiabilité constitue aujourd’hui un enjeu important dans le contexte du passage aux systèmes plus électriques dans des secteurs critiques tels que l’aéronautique, l’espace ou le nucléaire. Il s’agit de comprendre, de modéliser et de prédire les mécanismes de vieillissement susceptibles de conduire les composants à la défaillance et le système à la panne. L’étude des effets des contraintes opérationnelles sur la dégradation des composants est indispensable pour la prédiction de leur durée de vie. De nombreux modèles de durée de vie ont été développés dans la littérature dans le contexte du gé

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Aksel, Fatih. "Enhancing Accuracy Of Hybrid Recommender Systems Through Adapting The Domain Trends." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612330/index.pdf.

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Traditional hybrid recommender systems typically follow a manually created fixed prediction strategy in their decision making process. Experts usually design these static strategies as fixed combinations of different techniques. However, people&#039<br>s tastes and desires are temporary and they gradually evolve. Moreover, each domain has unique characteristics, trends and unique user interests. Recent research has mostly focused on static hybridization schemes which do not change at runtime. In this thesis work, we describe an adaptive hybrid recommender system, called AdaRec that modifies it

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25

Ahmed, Suborna Shekhor. "Impacts of tree improvement programs on yields of white spruce and hybrid spruce in the Canadian boreal forest." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/59494.

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Local and regional timber shortages may be ameliorated via planting improved stocks with higher yields. In this dissertation, I addressed an important knowledge gap on the impacts of tree improvement programs on yields of white spruce (Picea glauca (Moench) Voss) and hybrid spruce (Picea engelmannii Parry ex Engelmann x Picea glauca (Moench) Voss) plantations across the boreal and hemiboreal forests of Canada using meta-modelling approaches. In particular, I used meta-data for white and hybrid spruce provenance trials extracted from the literature to: (i) forecast provenance yields over time f

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Lindström, Henrik. "Migration to P4-Programmable Switches and Implementation of the Rapid Spanning Tree Protocol." Thesis, Linköpings universitet, Programvara och system, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-167509.

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P4 is a high-level language for programming the data plane of a network switch. These P4-programmable switches come with no pre-defined behavior or protocols, so it is entirely up to the loaded P4 program to define these. This allows the user to exclude any unwanted functionality and to create custom protocols. It also removes the dependence on the switch vendor in terms of both trust and addition of new features. This thesis looks at migration from traditional switches to P4-programmable ones. Since no behavior is included out-of-the-box in the P4 switches, a search is made for open-source P4

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Myburg, Alexander Andrew. "Genetic Architecture of Hybrid Fitness and Wood Quality Traits in a Wide Interspecific Cross of Eucalyptus Tree Species." NCSU, 2001. http://www.lib.ncsu.edu/etd/public/etd-23521723610112031/etd.pdf.

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Belleville, Florestan de Fraboul Christian. "Transport à multipoint fiable à très grande échelle intégration de critères de coût en environnement Internet hybride satellite/terrestre /." Toulouse : INP Toulouse, 2005. http://ethesis.inp-toulouse.fr/archive/00000086.

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Pozitano, Marina. "Deterioração controlada de sementes de tres hibridos interespecificos de capim elefante x milheto." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257048.

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Orientador: Roberto Usberti<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agricola<br>Made available in DSpace on 2018-08-11T00:03:42Z (GMT). No. of bitstreams: 1 Pozitano_Marina_M.pdf: 496046 bytes, checksum: 6a3e550ffaca118448a75885d0a00c2d (MD5) Previous issue date: 2008<br>Resumo: O híbrido interespecífico Pennisetum purpureum (capim-elefante) x P. glaucum (milheto) foi desenvolvido com o intuito de aliar a rusticidade e a elevada produção de forragem do capim-elefante com o alto potencial de produção de sementes puras do milheto. Entretanto, reve

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Marchal, Alexandre. "Larch hybrid vigor and role of the phenotypic plasticity in the construction of heterosis." Thesis, Orléans, 2018. http://www.theses.fr/2018ORLE2014/document.

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Le mélèze d'Europe (Larix decidua) est traditionnellement exploité pour son bois de qualité. Malheureusement, la culture de cette essence hors de son aire de distribution a été un échec. L'hybridation avec le mélèze du Japon (L. kaempferi) est une voie prometteuse, en particulier grâce à l'hétérosis manifesté par cet hybride. Au cours de cette dissertation, nous valorisons les données d'un diallèle multi-site intra- et inter-spécifique d'âge avancé. Le 1er chapitre présente l'analyse de traits de production et de qualité du bois. Nous confirmons ainsi l'hétérosis pour les traits liés au volume

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Phuekvilai, Prattana. "Relicts, refugia and reticulation : a study of population history, hybrids and phylogeny in the long-lived flowering tree genus Tilia." Thesis, University of Newcastle upon Tyne, 2014. http://hdl.handle.net/10443/2629.

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Tilia L. (lime or basswood) is a genus of large trees that are widely distributed in the temperate regions of the Northern Hemisphere. Tilia is an under-investigated genus with unknown species relationships. Therefore, a phylogeny of the genus was reconstructed. This revealed disagreement of the phylogenetic placement of some species and also indicated extensive hybridization. To investigate this further, the most tractable and widely distributed species across Europe, T. cordata (Mill.) or small leaved lime and T. platyphyllos (Scop.) or large leaved lime, were selected for study. This study

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Maaloul, Mohamed. "Approche hybride pour le résumé automatique de textes : Application à la langue arabe." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4778.

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Cette thèse s'intègre dans le cadre du traitement automatique du langage naturel. La problématique du résumé automatique de documents arabes qui a été abordée, dans cette thèse, s'est cristallisée autour de deux points. Le premier point concerne les critères utilisés pour décider du contenu essentiel à extraire. Le deuxième point se focalise sur les moyens qui permettent d'exprimer le contenu essentiel extrait sous la forme d'un texte ciblant les besoins potentiels d'un utilisateur. Afin de montrer la faisabilité de notre approche, nous avons développé le système "L.A.E", basé sur une approche

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Marchet, Nicolas Prené Philippe. "Synthèse et stabilisation de suspensions colloïdales d'oxydes en milieu organique Application à la préparation de matériaux hybrides organiques-inorganiques pour des revêtements à très haute tenue au flux laser. /." Tours : SCD de l'université de Tours, 2008. http://theses.abes.fr/2008TOUR4002.

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Le, Duc Minh Khang. "Commande prédictive hybride et apprentissage pour la synthèse de contrôleurs logiques dans un bâtiment." Thesis, CentraleSupélec, 2016. http://www.theses.fr/2016SUPL0001/document.

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Une utilisation efficace et coordonnée des systèmes installés dans le bâtiment doit permettre d’améliorer le confort des occupants tout en consommant moins d’énergie. Ces objectifs à optimiser sont pourtant antagonistes. Le problème résultant peut être alors vu comme un problème d’optimisation multicritères. Par ailleurs, pour répondre aux enjeux industriels, il devra être résolu non seulement dans une optique d’implémentation simple et peu coûteuse, avec notamment un nombre réduit de capteurs, mais aussi dans un souci de portabilité pour que le contrôleur résultant puisse être implanté dans d

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Mota, Rui Carlos de Sousa. "An?lise de viabilidade t?cnica de utiliza??o da Fibra de bananeira com resina sint?tica em Comp?sitos." Universidade Federal do Rio Grande do Norte, 2010. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15617.

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Made available in DSpace on 2014-12-17T14:58:00Z (GMT). No. of bitstreams: 1 RuiCSM_MESTRE.pdf: 3074589 bytes, checksum: ce573ec9d691a895e59153850a53bf18 (MD5) Previous issue date: 2010-02-26<br>This paper aims to present the feasibility of using a composite using discarded material from the cultivation of banana tree (pseudostem), which is fibrillated together with synthetic resin replacing glass fiber to be used in structural elements that do not demand large mechanical stress such as reservoirs, troughs, domes, sewage pipes etc.. For this, there were studies about the mechanical propertie

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Herendeen, Robert V. "Two-year Performance of Hybrid and Pure American Chestnut Castanea Dentata (Fagaceae) Seedlings and Benefit of Pisolithus Tinctorius (Sclerodermataceae) on Eastern Ohio Mine Spoil." Ohio : Ohio University, 2007. http://www.ohiolink.edu/etd/view.cgi?ohiou1174414428.

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Sein, Chaw Chaw [Verfasser], Ralph [Akademischer Betreuer] Mitlöhner, Joachim [Akademischer Betreuer] Saborowski, and František [Akademischer Betreuer] Hapla. "Growth and Site Conditions of Acacia mangium, Acacia hybrid, Eucalyptus urophylla, Cinnamomum parthenoxylon and Erythropholeum fordii for Livelihood Security of Smallholders in Industrial Tree Planting Programs of Vietnam / Chaw Chaw Sein. Gutachter: Ralph Mitlöhner ; Joachim Saborowski ; František Hapla. Betreuer: Ralph Mitlöhner." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2012. http://d-nb.info/1042262780/34.

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[Verfasser], Chaw Chaw Sein, Ralph [Akademischer Betreuer] Mitlöhner, Joachim [Akademischer Betreuer] Saborowski, and František [Akademischer Betreuer] Hapla. "Growth and Site Conditions of Acacia mangium, Acacia hybrid, Eucalyptus urophylla, Cinnamomum parthenoxylon and Erythropholeum fordii for Livelihood Security of Smallholders in Industrial Tree Planting Programs of Vietnam / Chaw Chaw Sein. Gutachter: Ralph Mitlöhner ; Joachim Saborowski ; František Hapla. Betreuer: Ralph Mitlöhner." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2012. http://nbn-resolving.de/urn:nbn:de:gbv:7-webdoc-3435-6.

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Bontoux, Boris. "Techniques hybrides de recherche exacte et approchée : application à des problèmes de transport." Phd thesis, Université d'Avignon, 2008. http://tel.archives-ouvertes.fr/tel-00459367.

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Nous nous intéressons dans cette thèse aux possibilités d'hybridation entre les méthodes exactes et les méthodes heuristiques afin de pouvoir tirer avantage de chacune des deux approches : optimalité de la résolution exacte, caractère moins déterministe et rapidité de la composante heuristique. Dans l'objectif de résoudre des problèmes NPdifficiles de taille relativement importante tels que les problèmes de transports, nous nous intéressons dans les deux dernières parties de ce mémoire à la conception de méthodes incomplètes basées sur ces hybridations. Dans la première partie, nous allons nou

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Covi, Patrick. "Multi-hazard analysis of steel structures subjected to fire following earthquake." Doctoral thesis, Università degli studi di Trento, 2021. http://hdl.handle.net/11572/313383.

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Fires following earthquake (FFE) have historically produced enormous post-earthquake damage and losses in terms of lives, buildings and economic costs, like the San Francisco earthquake (1906), the Kobe earthquake (1995), the Turkey earthquake (2011), the Tohoku earthquake (2011) and the Christchurch earthquakes (2011). The structural fire performance can worsen significantly because the fire acts on a structure damaged by the seismic event. On these premises, the purpose of this work is the investigation of the experimental and numerical response of structural and non-structural components o

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Ouali, Abdelkader. "Méthodes hybrides parallèles pour la résolution de problèmes d'optimisation combinatoire : application au clustering sous contraintes." Thesis, Normandie, 2017. http://www.theses.fr/2017NORMC215/document.

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Les problèmes d’optimisation combinatoire sont devenus la cible de nombreuses recherches scientifiques pour leur importance dans la résolution de problèmes académiques et de problèmes réels rencontrés dans le domaine de l’ingénierie et dans l’industrie. La résolution de ces problèmes par des méthodes exactes ne peut être envisagée à cause des délais de traitement souvent exorbitants que nécessiteraient ces méthodes pour atteindre la (les) solution(s) optimale(s). Dans cette thèse, nous nous sommes intéressés au contexte algorithmique de résolution des problèmes combinatoires, et au contexte de

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Tan, Heng Chuan. "Vers des communications de confiance et sécurisées dans un environnement véhiculaire." Thesis, Paris, ENST, 2017. http://www.theses.fr/2017ENST0063/document.

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Le routage et la gestion des clés sont les plus grands défis dans les réseaux de véhicules. Un comportement de routage inapproprié peut affecter l’efficacité des communications et affecter la livraison des applications liées à la sécurité. D’autre part, la gestion des clés, en particulier en raison de l’utilisation de la gestion des certificats PKI, peut entraîner une latence élevée, ce qui peut ne pas convenir à de nombreuses applications critiques. Pour cette raison, nous proposons deux modèles de confiance pour aider le protocole de routage à sélectionner un chemin de bout en bout sécurisé

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Silva, Murilo da. "Implementação de um localizador de faltas híbrido para linhas de transmissão com três terminais baseado na transformada wavelet." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/18/18154/tde-11042008-110740/.

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Este trabalho apresenta o estudo e o desenvolvimento de um algoritmo híbrido para detecção, classificação e localização de faltas em sistemas com três terminais utilizando como principal ferramenta a transformada wavelet (TW) em suas versões discreta (TWD) e estacionária (TWE). O algoritmo é dito híbrido, pois alia duas metodologias para localizar a falta. A primeira baseada na análise de componentes de alta freqüência (ondas viajantes) e a segunda, baseada na extração dos componentes fundamentais para o cálculo da impedância aparente. A metodologia proposta foi concebida de maneira a trabalha

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Saputro, Nico. "Performance Optimization of Network Protocols for IEEE 802.11s-based Smart Grid Communications." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/2555.

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The transformation of the legacy electric grid to Smart Grid (SG) poses numerous challenges in the design and development of an efficient SG communications network. While there has been an increasing interest in identifying the SG communications network and possible SG applications, specific research challenges at the network protocol have not been elaborated yet. This dissertation revisited each layer of a TCP/IP protocol stack which basically was designed for a wired network and optimized their performance in IEEE 802.11s-based Advanced Metering Infrastructure (AMI) communications network ag

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Chevalier, Michel. "Contribution a l'etude des relations hote-parasite dans le cas du couple malus x domestica-venturia inaequalis : etude histologique et cytologique de deux cas de resistance dependant des genes vf et vm." Nantes, 1988. http://www.theses.fr/1988NANT2030.

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Expression de la resistance selon les races et les hybrides vm et vf. Caracterisation de l'hypersensibilite codee par le genie vm. Etude comparative des classes de symptomes liees a la resistance codee par le gene vf. Caracterisation des differences d'hypersensibilite dans 2 cas

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Chang, Shou-Chih, and 張守智. "Model Trees for Hybrid Data Type Classification." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/92670263836027181618.

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碩士<br>國立臺灣科技大學<br>資訊工程系<br>92<br>Classification problem is a fundamental task in data mining. Many classification learning algorithms have been successfully developed for the different purposes. Most classification learning algorithms are only suitable for some specified attribute type of data. However, in the real world applications, we often encounter the hybrid datasets which are composed of nominal and numerical attributes. To apply the learning algorithms, some attributes must be transformed into the appropriate data types. This procedure could change the nature of datasets. In this thesi

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Lin, Pei-ying, and 林珮瑩. "Audio coding using multi-subband hybrid trees." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/44398273108422884713.

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Butler, Dana Anthony. "Penman-Monteith surface resistance for hybrid poplar trees." Thesis, 2000. http://hdl.handle.net/1957/33226.

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The application of the widely used Penrnan-Monteith evapotranspiration equation to hybrid poplar trees is impossible without a valid surface resistance. The increase in applications of drip-irrigated hybrid poplar trees for wood chip stock and veneer production, as well as bioremediation, constitutes a need for estimating the evapotranspiration of these trees. To the author's knowledge, there are no published estimates of surface resistance for poplar trees. Six years of weekly soil moisture content for drip-irrigated, hybrid poplar trees were used in a water balance to compute evapotranspirat

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Hsu, Yu-Shan, and 許毓珊. "A Hybrid IDS framework via Decision Trees and SVMs." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/6sgvd7.

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碩士<br>國立臺灣科技大學<br>資訊工程系<br>94<br>When the Internet and networked systems become more widespread and advanced, researchers, government organizations and many commercial firms start to pay much attention to the higher risk of attacks. Intrusion detection system is used to detect inappropriate, incorrect, or anomalous activity in computer networks giving the administrator a voluntarily alarm if some suspect events occurred with computer system. In this thesis, we proposed an intrusion detection system (IDS) framework to discriminate between normal connection and intrusive activities. We treat it

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Kabir, Sohag, K. Aslansefat, I. Sorokos, Y. Papadopoulos, and Savas Konur. "A hybrid modular approach for dynamic fault tree analysis." 2020. http://hdl.handle.net/10454/17983.

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Yes<br>Over the years, several approaches have been developed for the quantitative analysis of dynamic fault trees (DFTs). These approaches have strong theoretical and mathematical foundations; however, they appear to suffer from the state-space explosion and high computational requirements, compromising their efficacy. Modularisation techniques have been developed to address these issues by identifying and quantifying static and dynamic modules of the fault tree separately by using binary decision diagrams and Markov models. Although these approaches appear effective in reducing computational

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