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Dissertations / Theses on the topic '1D code'

Author: Grafiati

Published: 10 March 2023

Last updated: 28 July 2025

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1

Santo, Luca. "AA-CAES physical modelling: integration of a 1D TES code and plant performance analysis." Thesis, Uppsala universitet, Tillämpad kärnfysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-360448.

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The focus of this thesis work was the development of an approachto couple a previosly existing Thermal Energy Storage (TES) modelwritten in C++ with a Simulink/Simscape plant model to simulate anAdvanced Adiabatic Compressed Air Energy Storage (AA-CAES) plant.After the creation and validation of such tool, the complete modelwas used to run simulations, with the aim of assessing the AA-CAESplant's performance under multiple patterns of charge anddischarge.Most of the works found in the literature only provide values ofstorage efficiency obtained from analytical approaches, whilethose that use s

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2

Ladeia, Cibele Aparecida. "Formulação semi-discreta aplicada as equações 1D de convenção-difusão-reação e de Burgers." Universidade Estadual de Londrina. Centro de Ciências Exatas. Programa de Pós-Graduação em Matemática Aplicada e Computacional, 2012. http://www.bibliotecadigital.uel.br/document/?code=vtls000171429.

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Neste trabalho aplicamos a formulação semi-discreta, caracterizada pela combinação de aproximações distintas para as variáveis temporal e espacial, onde a variável temporal é discretizada utilizando métodos implícitos multi-estágios e a espacial usando métodos de elementos finitos,para a obtenção de soluções numéricas para as equações 1D de convecção-difusão-reação e de Burgers, cujas soluções analíticas são conhecidas.Métodos multi-estágios são obtidos através dos aproximantes de Padé. Em particular, neste trabalho consideramos os métodos implícitos multi-estágios de segunda ordem, R11, e de

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3

Medeiros, Cláudia Brunosi. "Soluções das equações de Burgers 1D e 2D via : upwind de alta ordem e Hopf-Cole." Universidade Estadual de Londrina. Centro de Ciências Exatas. Programa de Pós-Graduação em Matemática Aplicada e Computacional, 2013. http://www.bibliotecadigital.uel.br/document/?code=vtls000183051.

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No estudo em dinâmica dos fluidos computacional há o interesse em obter soluções numéricas para as equações diferenciais parciais. Um desafio neste contexto é a formação de descontiniuidades que pode ser atribuída ao tratamento do termo convectivo não linear em equações diferenciais parciais. Dentro deste cenário, neste trabalho apresenta-se o estudo de um esquema upwind de alta resolução, o esquema ADBQUICKEST (Adaptative Bounded QUICKEST). Este esquema é aplicado em equações 1D e 2D, comparando qualitativemente os resultados numéricos com as soluções analíticas obtidas via transformação de H

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4

Douimi, Mohammed. "Modélisation markovienne et optimisation numérique pour la restauration des signaux en (1D) et (2D)." Rouen, 1995. http://www.theses.fr/1995ROUES039.

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Cette thèse est consacrée à la modélisation markovienne et l'optimisation numérique pour la restauration des signaux en (1D) et (2D) bruités par un bruit blanc gaussien centré. Le principe du modèle markovien exploite le champ de Markov et de Gibbs sur des graphes finis via le théorème d'Hammersley Clifford. Le signal restauré est estimé au sens du critère du maximum a posteriori (MAP), qui conduit à un problème d'optimisation globale mixte, non convexe et de très grande taille, réputé très difficile. Plusieurs méthodes ont été proposées notamment le recuit simulé (SA), le graduted non convexi

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5

Peterson, James B. "Comparison of Analysis and Optimization Methods for Core-Megacolumn-Outrigger Skyscrapers." BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/2834.

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The goal of this research is to compare performance of three analysis methods and three optimization methods for core-megacolumn-outrigger, or CMO skyscrapers. The three analysis methods include a 1D stick analysis, 2D frame analysis, and 3D finite element analysis. The three optimization methods include a trial and error optimization, optimality criteria optimization, and genetic algorithm. Each of these methods was compared by applying an example CMO skyscraper. The 1D stick analysis proved to be the most accurate when compared with the 3D finite element results. The genetic algorithm was re

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6

Yang, Minhao. "Conception rationnelle de nano-hybrides de carbone 1D pour l'application de nanocomposites diélectriques." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLC088/document.

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Les nanocomposites polymères diélectriques ayant une constante diélectrique élevée et une faible perte diélectrique ont reçu un grand intérêt pour une utilisation dans le domaine du condensateur électrostatique. De manière générale, les performances diélectriques améliorées des nanocomposites sont déterminées par le type et la nature des polymères et des nanocharges sélectionnés, ainsi que par l'effet de couplage interfacial entre les matrices et les nanocharges. Parmi ces facteurs, les propriétés physiques, les géométries et les structures des composants des nanocharges jouent un rôle essenti

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7

Morber, Jenny Ruth. "1D nanowires understanding growth and properties as steps toward biomedical and electrical application /." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24825.

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Thesis (Ph.D.)--Materials Science and Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Snyder, Robert; Committee Co-Chair: Wang, Zhong Lin; Committee Member: El-Sayed, Mostafa; Committee Member: Milam, Valeria; Committee Member: Summers, Christopher; Committee Member: Wong, C. P.

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8

CROS, François. "Confluences, remplissage et vidange: deux aspects singuliers du système veineux jambier." Phd thesis, Université Paris-Diderot - Paris VII, 2003. http://tel.archives-ouvertes.fr/tel-00004089.

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L'objectif de ce travail est de contribuer à la modélisation globale du système veineux jambier entrepris par les Laboratoires Innothera, en étudiant deux de ces aspects singuliers. La première partie porte sur les confluences. A l'aide d'une étude numérique validée expérimentalement nous proposons deux modèles permettant, d'une part de prédire la perte de charge singulière d'une confluence en fonction de sa géométrie et de son régime d'écoulement et, d'autre part, de prendre en compte les effets non newtoniens du sang en introduisant une viscosité dont la valeur dépend du débit. La seconde pa

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9

Di, Chicco Augusto. "Optimization of a calculation scheme through the parametric study of effective nuclear cross sections and application to the estimate of neutronic parameters of the ASTRID fast nuclear reactor." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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This thesis presents the project for the optimization of the APOLLO3® neutronic calculation scheme applied to the 4th generation fast neutron reactor ASTRID. APOLLO3® is the new multipurpose neutronic platform developed by the CEA. It incorporates many of the previous generation codes used in the French reactor core design supply chain. Like all deterministic codes, APOLLO3® solves the neutron transport equation with a discretization of the variables of interest: multi-group method for the energy, discrete ordinates and spherical harmonics for the angular variable, collision probabilities and

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10

Liu, Erming. "Synthesis of one-dimensional nanocomposites based on alumina nanofibres and their catalytic applications." Thesis, Queensland University of Technology, 2011. https://eprints.qut.edu.au/48323/1/Erming_Liu_Thesis.pdf.

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Materials with one-dimensional (1D) nanostructure are important for catalysis. They are the preferred building blocks for catalytic nanoarchitecture, and can be used to fabricate designer catalysts. In this thesis, one such material, alumina nanofibre, was used as a precursor to prepare a range of nanocomposite catalysts. Utilising the specific properties of alumina nanofibres, a novel approach was developed to prepare macro-mesoporous nanocomposites, which consist of a stacked, fibrous nanocomposite with a core-shell structure. Two kinds of fibrous ZrO2/Al2O3 and TiO2/Al2O3 nanocomposites wer

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11

Cheng, Pei-Yi, and 鄭珮漪. "A Computer Code for the 1D Extension and Optimization Analysis." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/62948285737650147035.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>93<br>This research is aimed to develop a complete code that can provide the user a path layout and an optimal speeds setup for a 1D extension system. Prior to analysis, the user needs just to provide the system configuration such as roller locations, radius, friction, and rollers speeds, then the program will output the system layout for first check. The tension analysis then follows to give users initial understanding. The complete code embarks an optimization process in which the user specifies an object function that could be tensions or speeds related and yields

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12

PUCCI, EGIDIO. "Innovative design process for industrial gas turbine combustors." Doctoral thesis, 2018. http://hdl.handle.net/2158/1126566.

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This thesis is tracking the design process footprints, from the wide initial scenario of a new combustor design for industrial gas turbines, down to detailed design aspects, passing through sealing system design with turbine nozzle, up to a specific liner cooling architecture and its optimization. Main effort of this job has been focused on the creation of a numerical tool, able, since the early phase of development, to analyze the liner cooling with a one-dimensional conjugate aero-thermal-strain approach: liner cold side heat transfer coefficients in a turbulated forced convection region ar

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13

Chen, Guan-Zhong, and 陳冠仲. "Field Emission and Optical Properties of 1D ZnO/TiO2 Core-shell Nanowires." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/97002578733934751145.

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碩士<br>國立交通大學<br>電子工程系所<br>95<br>In this thesis, 1D ZnO/TiO2 core-shell nanowires were prepared in two steps process. ZnO nanowires were fabricated by hydrothermal method at the low temperature as core. The ZnO nanowires were fabricated under the various solution concentrations and growth times of hydrothermal method in order to get a suitable ZnO nanowries array. TiO2 shell was deposited by sputtering method under the various sputtering time and power to get a uniform and different thickness. TiO2 tubes were fabricated by wet etching process. The optical properties, micro structure, surface mo

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14

Tsai, Yu-Heng, and 蔡雨亨. "Synthesis of 1D Copper Nanostructure by Surfactant-Assisted Galvanic Reduction and as a Template to Growth 1D Copper-Silver Core-Shell Nanostructurenanostructure." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/w8r2g5.

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碩士<br>國立臺北科技大學<br>資源工程研究所<br>99<br>The first part of this research demonstrates the syntheses of 1D copper nanostructure via cetyltrimethylammonium chloride-assisted galvanic reduction. The dimensions of the hollow-rectangular copper nanotubes and nanowires with 150-300 nm in diameter and 2-10 μm in length can be controlled by varying the reaction temperature. Field-emission measurement shows that the thick copper nanowires emit electrons (10 μAcm-2) at a turn-on field of 7.7 Vμm-1 with a field enhancement factor of 100. Using 4-mercaptobenzoic acid as a surface-enhanced Raman scattering probe

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15

Hsieh, Cheng-Hsiao, and 謝承孝. "Design and Performance Analysis of 1D Codes for Optical CDMA Systems under Synchronous/Asynchronous Assumptions." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/93675825559505805423.

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碩士<br>國立中興大學<br>電機工程學系所<br>98<br>Network technologies have been strongly developed in the past few years and the number of network users is increasing substantially in the world, too. So, optical network technologies begin to receive attention again. Besides, it is important for network businesses to upgrade their networks in order to provide more simultaneous users. In this thesis, we construct and analyze a new family of one-dimensional (1-D) “synchronous” optical codes for use in optical code-division multiple-access systems and networks. The new codes substantially increase can the number

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16

Yen-ChihChen and 陳彥志. "Growth and Characterization of the 1D metal sulfide nanostructures and Zn-ZnO core-shell nanocables." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/23639719097371195267.

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