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Dissertations / Theses on the topic 'Optimization of Back Reflectors'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Schleussner, Sebastian Michael. "ZrN Back-Contact Reflectors and Ga Gradients in Cu(In,Ga)Se2 Solar Cells." Doctoral thesis, Uppsala universitet, Fasta tillståndets elektronik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-151402.

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Solar cells constitute the most direct way of converting solar energy to electricity, and thin-film solar-cell technologies have lately been growing in importance, allowing the fabrication of less expensive modules that nonetheless have good power-conversion efficiencies. This thesis focuses on solar cells based on Cu(In,Ga)Se2, which is the thin-film technology that has shown the highest conversion efficiency to date, reaching 20.3 % on the laboratory scale. Solar modules still have some way to go to become entirely competitive with existing energy technologies, and there are two possible pat

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Lewis, Brian Wellington. "Silica nanosphere textured back reflectors for increased absorption in thin film amorphous silicon solar cells." [Ames, Iowa : Iowa State University], 2010. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1476317.

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3

Curtin, Benjamin Michael. "Photonic crystal back-reflectors for light management and enhanced absorption in a-Si:H solar cells." [Ames, Iowa : Iowa State University], 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1468075.

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4

Boesch, Ryan Paul. "SiO₂ nanosphere textured back reflectors for enhanced light trapping in amorphous and nanocrystalline silicon solar cells." [Ames, Iowa : Iowa State University], 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1464182.

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5

Ramachandran, Adithya. "HEV fuel optimization using interval back propagation based dynamic programming." Thesis, Georgia Institute of Technology, 2016. http://hdl.handle.net/1853/55054.

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In this thesis, the primary powertrain components of a power split hybrid electric vehicle are modeled. In particular, the dynamic model of the energy storage element (i.e., traction battery) is exactly linearized through an input transformation method to take advantage of the proposed optimal control algorithm. A lipschitz continuous and nondecreasing cost function is formulated in order to minimize the net amount of consumed fuel. The globally optimal solution is obtained using a dynamic programming routine that produces the optimal input based on the current state of charge and the future p

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6

Vardakos, Sotirios. "Back-analysis methods for optimal tunnel design." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/26124.

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A fundamental element of the observational method in geotechnical engineering practice is the utilization of a carefully laid out performance monitoring system which provides rapid insight of critical behavioral trends of the work. Especially in tunnels, this is of paramount importance when the contractual arrangements allow an adaptive tunnel support design during construction such as the NATM approach. Utilization of measurements can reveal important aspects of the ground-support interaction, warning of potential problems, and design optimization and forecasting of future behavior of the und

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7

Mas, Baixeras Albert. "Optimization of inverse reflector design." Doctoral thesis, Universitat de Girona, 2011. http://hdl.handle.net/10803/22705.

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Aquesta tesi presenta un nou mètode pel disseny invers de reflectors. Ens hem centrat en tres temes principals: l’ús de fonts de llum reals i complexes, la definició d’un algoritme ràpid pel càlcul de la il•luminació del reflector, i la definició d’un algoritme d’optimització per trobar més eficientment el reflector desitjat. Les fonts de llum estan representades per models near-field, que es comprimeixen amb un error molt petit, fins i tot per fonts de llum amb milions de raigs i objectes a il•luminar molt propers. Llavors proposem un mètode ràpid per obtenir la distribució de la il•luminac

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8

Murray, Myles P. "DEVELOPMENT AND OPTIMIZATION OF BACK SURFACE ACRYLICSOLARMIRRORS TO ASSURE 25 YEAR LIFETIME PERFORMANCE." Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1364987929.

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9

Johnson, Christian Axel. "Optimization-based biomechanical evaluation of isometric exertions on a brake wheel." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-03032009-041004/.

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10

Safi, Djamschid [Verfasser]. "Simulation of traveling-wave tubes for analysis and optimization in modulated back-off / Djamschid Safi." Hamburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2020. http://d-nb.info/1217326774/34.

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11

Mollica, Fabien. "Optimization of ultra-thin Cu(In,Ga)Se2 based solar cells with alternative back-contacts." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066556/document.

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En quelques années, l'efficacité des cellules solaires à base de Cu(In,Ga)Se2 (CIGS) est passée de 20% à 22.6%. La rapidité de ce développement montre que le CIGS est un matériaux idéal pour les technologies solaires en couches minces. Pourtant, le coût de production cette technologie doit encore être abaissé pour une meilleure compétitivité. La fabrication d'un module avec une couche CIGS plus fine permettrait d'augmenter la production d'une usine et de réduire sa consommation en métaux. Ce travail de thèse vise à réduire l'épaisseur du CIGS d'un standard de 2.0-2.5 µm à une épaisseur inférie

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12

Smith, Frank A. "A framework for flexible comparison and optimization of X-ray digital tomosynthesis." OpenSIUC, 2019. https://opensiuc.lib.siu.edu/dissertations/1667.

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Digital tomosynthesis is a novel three-dimensional imaging technology that utilizes limited number of X-ray projection images to improve the diagnosis and detection of lesions. In recent years, tomosynthesis has been used in a variety of clinical applications such as dental imaging, angiography, chest imaging, bone imaging, and breast imaging. The goal of our research is to develop a framework to enable flexible optimization and comparison of image reconstruction and imaging configurations.

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13

Lavelle, Jerome Philip. "An optimization of the placement of flexible reflective post delineators from a visual detection point of view." Ohio : Ohio University, 1986. http://www.ohiolink.edu/etd/view.cgi?ohiou1183139198.

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14

McMulkin, Mark L. "Investigation and empirical evaluation of inputs to optimization-based biomechanical trunk models." Diss., This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-10032007-172024/.

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15

Cafieri, Sonia. "From local to global and back : a closed walk in mathematical programming and its applications." Habilitation à diriger des recherches, Université Paul Sabatier - Toulouse III, 2012. http://tel.archives-ouvertes.fr/tel-00979273.

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Ce document propose un parcours de mes travaux de recherche en optimisation, en passant par l'optimisation mixte en variables entières, l'optimisation non-linéaire continue locale et le clustering dans les réseaux (graphes). Le premier chapitre traite de la programmation non linéaire mixte en variables entières et de l'optimisation globale déterministe. Il présente des contributions relatives à des investigations théoriques ainsi que des applications à des problèmes concrets. Nous discutons principalement de relaxations convexes et de reformulations automatiques de problèmes de programmation m

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Ma, Tengfei. "A Graph Attention plus Reinforcement Learning Method for Antenna Tilt Optimization." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-300111.

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Remote Electrical Tilt optimization is an effective method to obtain the optimal Key Performance Indicators (KPIs) by remotely controlling the base station antenna’s vertical tilt. To improve the KPIs aims to improve antennas’ cooperation effect since KPIs measure the quality of cooperation between the antenna to be optimized and its neighbor antennas. Reinforcement Learning (RL) is an appropriate method to learn an antenna tilt control policy since the agent in RL can generate the optimal epsilon greedy tilt optimization policy by observing the environment and learning from the state- action

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17

Ma, Jiya. "A Genetic Algorithm for Solar Boat." Thesis, Högskolan Dalarna, Datateknik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:du-3488.

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Genetic algorithm has been widely used in different areas of optimization problems. Ithas been combined with renewable energy domain, photovoltaic system, in this thesis.To participate and win the solar boat race, a control program is needed and C++ hasbeen chosen for programming. To implement the program, the mathematic model hasbeen built. Besides, the approaches to calculate the boundaries related to conditionhave been explained. Afterward, the processing of the prediction and real time controlfunction are offered. The program has been simulated and the results proved thatgenetic algorithm

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18

Kim, Doo-Il. "Development and application of integrated ozone contactor design and optimization tools." Diss., Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-05182007-120642/.

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Thesis (Ph. D.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2008.<br>Jae-Hong Kim, Committee Chair ; Philip J.W. Roberts, Committee Member ; E. Michael Perdue, Committee Member ; Sotira Yiacoumi, Committee Member ; Thorsten Stoesser, Committee Member.

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19

Badalamenti, Bryan M. "OpenCL Based Digital Image Projection Acceleration." University of Dayton / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1438277905.

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20

Aguilar, David P. "A radial basis neural network for the analysis of transportation data." [Tampa, Fla.] : University of South Florida, 2004. http://purl.fcla.edu/fcla/etd/SFE0000515.

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21

Pelaio, Bruna Pilz Moraes. "Avaliação funcional lombopélvica: comparação entre indivíduos com e sem dor lombar crônica." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/17/17152/tde-20112018-111242/.

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Alguns pacientes com dor lombar crônica classificados no grupo de otimização funcional pelo método de classificação Treatment based classification (TBC), apesar de apresentarem bons resultados em questionários funcionais, ainda referem dor e limitação em várias tarefas funcionais. Este estudo teve como objetivo explorar as diferenças de performance entre os pacientes com dor lombar crônica e indivíduos saudáveis submetidos a um conjunto de testes de força isométrica do quadril e resistência lombopélvica, além de identificar valores de corte classificatórios com acurácia aceitável de testes e r

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22

Hammoud, Mohamad. "Etude et conception d'antennes imprimées sectorielles à faibles lobes arrière pour réseau Wi-Fi outdoor maillé." Thesis, Montpellier, 2020. http://www.theses.fr/2020MONTS032.

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Dans le cadre du réseau maillé Wi-Fi sur la bande 2,4 GHz en environnement outdoor, nous concevons des antennes sectorielles à très faible rapport de rayonnement avant – arrière. Ceci permet de limiter les interférences co-canales. Nous étudions tout d'abord des éléments rayonnants associés à un plan réflecteur en métamatériau. Ce dernier est basé sur une structure de Sievenpiper dite structure « champignon ». Cette structure est constituée de motifs périodiques imprimés sur un substrat. A l’aide de simulations des diagrammes de dispersion, et de la phase du coefficient de réflexion sur ces st

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23

Rama, Venkat Siddhartha. "Optimization Study of a Combined Wind-Solar Farm for a Specified Demand." Wright State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=wright1592391472670774.

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24

Macdonald, John Charles. "Efficient Estimation for Small Multi-Rotor Air Vehicles Operating in Unknown, Indoor Environments." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3496.

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In this dissertation we present advances in developing an autonomous air vehicle capable of navigating through unknown, indoor environments. The problem imposes stringent limits on the computational power available onboard the vehicle, but the environment necessitates using 3D sensors such as stereo or RGB-D cameras whose data requires significant processing. We address the problem by proposing and developing key elements of a relative navigation scheme that moves as many processing tasks as possible out of the time-critical functions needed to maintain flight. We present in Chapter 2 analysis

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25

Ghazavizadeh, Akbar. "Modeling and simulation of the micromechanical behavior of semi-crystalline polyethylene including the effect of interphase layer." Thesis, Strasbourg, 2013. http://www.theses.fr/2013STRAD048/document.

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Dans ce travail, la caractérisation mécanique de l’interphase entre les zones amorphes et cristallines dans le polyéthylène a été abordée. La caractérisation élastique est effectuée en appliquant deux approches micromécaniques à partir des données de la simulation moléculaire pour la zone interlamellaire. Ces approches micromécaniques sont d’une part le modèle étendu d’inclusion composite, et d’autre part la méthode de double inclusion. Les résultats des deux approches s’accordent parfaitement. Il a été mis en évidence que le tenseur de rigidité de l’interphase n’est pas défini positif, l’inte

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26

Berberovic, Adnan, and Alexander Eriksson. "A Multi-Factor Stock Market Model with Regime-Switches, Student's T Margins, and Copula Dependencies." Thesis, Linköpings universitet, Produktionsekonomi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-143715.

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Investors constantly seek information that provides an edge over the market. One of the conventional methods is to find factors which can predict asset returns. In this study we improve the Fama and French Five-Factor model with Regime-Switches, student's t distributions and copula dependencies. We also add price momentum as a sixth factor and add a one-day lag to the factors. The Regime-Switches are obtained from a Hidden Markov Model with conditional Student's t distributions. For the return process we use factor data as input, Student's t distributed residuals, and Student's t copula depend

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27

"Optimization of Back Reflectors for Bifacial Photovoltaic Modules." Master's thesis, 2019. http://hdl.handle.net/2286/R.I.53954.

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abstract: Demand for green energy alternatives to provide stable and reliable energy solutions has increased over the years which has led to the rapid expansion of global markets in renewable energy sources such as solar photovoltaic (PV) technology. Newest amongst these technologies is the Bifacial PV modules, which harvests incident radiation from both sides of the module. The overall power generation can be significantly increased by using these bifacial modules. The purpose of this research is to investigate and maximize the effect of back reflectors, designed to increase the efficie

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Chen, Ji-Siao, and 陳紀孝. "Modeling and Optimization of Phosphor-converted LEDs with Omni-directional Reflectors." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/45022580387697383018.

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碩士<br>國立清華大學<br>光電工程研究所<br>96<br>ABSTRACT White LEDs based on UV LED pumping visible phosphors have the advantages of stable color temperature, high color rendition, good color uniformity, easy fabrication, and low cost. However, the electrical-to-optical conversion efficiency is lower than that of the mainstream white LEDs technology based on blue LEDs pumping yellow phosphor. The low efficiency is due to two factors. One is the low efficiency of current UV LED. The other is the low phosphor conversion efficiency. This study proposes a way to improve the efficiency of UV pumped phosphor-conv

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29

Yang, Tsung-Lung, and 楊宗龍. "Engineering design optimization using back-propagation network." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/41407894209919924542.

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30

Patabandi, Maddumage Chathura Jeevantha. "Co-Simulation of Back-to-Back VSC Transmission System." 2011. http://hdl.handle.net/1993/4770.

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With the increased complexity of modern power systems, it may be required more than one platform to do an intended study efficiently and accurately. This research was carried out to investigate the use of co-simulation in an application of power system. A back-to-back Voltage Source Converter (VSC) transmission system was modeled in PSCAD/EMTDC which is an Electro-Magnetic Type (EMT) software. Results were analyzed for some operating points of the system. Then the control system of the above system was modelled in MATLAB/SIMULINK while the rest of the system was modeled in PSCAD/EMTDC. B

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Pinto, Cristiana Sofia Santos. "Core back moulding, adhesion optimization in the joining area." Master's thesis, 2020. http://hdl.handle.net/1822/69578.

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Dissertação de mestrado em Polymer Engineering<br>When industries need to make components with two or more materials using just one mould and one machine, they use multi-material injection moulding techniques. One of these techniques is the core back moulding that allows the subsequent injection of two different materials without opening the mould, commonly used for parts with simple geometry, normally a rigid part involved with an elastomer. These moulds are very complex in its structure, therefore the design of the mould, its construction and assembly need to be carefully done to avoid part

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Wu, Wan-Cheng, and 吳萬成. "Parameter Optimization of Back-Propagation Network and Feature Selection Using Particle Swarm Optimization Approach." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/74104438758229482008.

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碩士<br>華梵大學<br>資訊管理學系碩士班<br>96<br>Abstract The back-propagation network (BPN) is a popular tool and can be applied in various fields. But, different problems may require different parameter settings for network architectures. On the other hand, a dataset may contain many features, but not all of the features are beneficial for classification in BPN. Particle swarm optimization (PSO) is a novel meta -heuristic technique in the artificial intelligence field. PSO imitates the rasorial mechanism of bird in nature and has been successfully imple mented to solve the problems in many fields. , thesis

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33

Kang, Shih-Huang, and 康詩凰. "Back analyses of earthdam seepage problems using heuristic optimization method." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/97563619349681806887.

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碩士<br>國立交通大學<br>土木工程學系<br>99<br>Embankment dam is the most common type of dams in Taiwan. Besides dam failure caused by overflow erosion, piping due to seepage is one of the major reason that may result in the breach of an embankment dam. Piping failure tends to take place unexpectedly and catastrophically. A proper program of monitoring for seepage and water pressure can help to reduce the chance of piping failure. When unusual monitored data occurs, an appropriate diagnosis will be essential to look for the real cause and timely solve the problem. This thesis aims to propose a diagnosis

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34

Cheng, Yung-Lung, and 鄭詠隆. "TFT-LCD TV Back Cover Research for the Optimization of Warpage." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/88286249980969860266.

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碩士<br>中原大學<br>機械工程研究所<br>97<br>Abstract Through the rapid progress of technology, the size of LCD get larger and the exterior of product are two main concern of TV. Thus, CRT Monitor has been gradually replaced by light TFT-LCD TV. For 3C market is gradually mature and competitive, the demand of exterior, complexity of product, and the quality of the product are all raised. To decrease the error of mold design and shorten time, the experiences and inheritances of designers and aged engineers are trusted in product design. Through tests, the standards of mold design and product quality have bee

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35

Tsai, Meng-chi, and 蔡孟頎. "Multi-Pin Optimization of Image Registration using Back Propagation Neural Network." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/237p9f.

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碩士<br>國立中央大學<br>機械工程研究所碩士在職專班<br>96<br>Image registration are skillful of machine vision, the commerce service package was adopted as the drawing of equipment most of the time , software source code library and database or image capture hardware and research assistant sold by professional vendor , they have unique authority of agency or own vision technique, there are differences as the basis principles of image processing, characteristics of different software systems that have merit and demerit , the system are linear programming could not to process non-linear problem of multi-pin interlac

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Li, ChiaLin, and 李佳霖. "Optical Design Optimization for Light Guide Film and Slimmed Back Light Module." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/16677717160497995671.

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碩士<br>國立暨南國際大學<br>光電科技碩士學位學程在職專班<br>100<br>Digital products bring convenience and entertainment to people’s everyday life. Commonly, observable and readable contents were presented through display interfaces in digital products. Among various display interfaces, the TFT LCD (thin-film-transistor liquid-crystal-display) has been recognized as the mainstream display technology for having the advantages of light weight, slim body, energy saving and low radiation. TFT LCD itself does not emit light, however, and back-lighting module is necessary for TFT LCD to provide illumination for depicting t

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Hsu, Shih-Huan, and 許世煥. "Optimization by Pairwise Linkage Detection, IncrementalLinkage Set, and Restricted / Back Mixing:DSMGA-II." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/79004402954781747596.

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碩士<br>國立臺灣大學<br>電機工程學研究所<br>103<br>This thesis proposes a new evolutionary algorithm, called DSMGA-II, to efficiently solve optimization problems via exploiting problem substructures. The proposed algorithm adopts pairwise linkage detection and stores the information in the form of dependency structure matrix (DSM). A new linkage model, called the incremental linkage set, is then constructed by using the DSM. Inspired by the idea of optimal mixing, the restricted mixing and the back mixing are proposed. The former aims at efficiently exploration under certain constrains. The latter aims at exp

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Lin, Hsin-Chih, and 林欣志. "Optimization of Back-Propagation Network and Feature Selection Using Simulated Annealing Approach." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/37500654928580964653.

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碩士<br>華梵大學<br>資訊管理學系碩士班<br>94<br>The back-propagation network (BPN) is a popular data mining technique. Nevertheless, different problems may require different network architectures and parameters. Therefore, rule of thumb or "try and error" methods are usually used to determine them. However, these methods may lead worse network architectures and parameters. On the other hand, a dataset may contain many features; however, not all features are beneficial for classification in BPN. Therefore, a simulated annealing (SA) approach is proposed to obtain the better network architectures and parameter

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Cheng, Ming-Chia, and 鄭明嘉. "Optimization of Light Guide Plate Micro-Structure by Back-Propagation Neural Network." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/jzvey2.

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碩士<br>國立高雄第一科技大學<br>光電工程研究所<br>96<br>This research proposes a newly developed optimization method for light guide plate (LGP) of extra thin back light system. The design goal will be focused at 13 to 15 inches monitor, which might be specific for notebook computer. Traditionally, LGP is optimized either by curve fitting or time-consuming try errors, which might have disadvantages in case uniformity and brightness has to perfectly be balanced. Besides, extra-thin back light system might complicate optical design. In this paper, the Back-Propagation Neural Network (BPNN) is employed to optimize

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Wu, Chang-Rong, and 吳昌榮. "DRAM Leakage Current and Retention Time Improvement by Back-end Passivation Film Optimization." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/10750742516799731979.

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碩士<br>長庚大學<br>電子工程研究所<br>92<br>DRAM data retention time has nearly doubled for each generation due to the demand of high density for high speed and low power DRAMs. However, the electric field in memory cell is also becoming stronger and leakage current has been increasing with each generation resulting in poor retention characteristics. In the work, it was found that the back-end passivation films were skipped in the standard process flow of 0.14µm 256Mb DRAMs, the performance of the leakage current and the data retention time were significantly improved. Hence, the optimization of the passi

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Chen, Chien Ming, and 陳建銘. "Simulation Optimization for Hybrid Flow Shop Scheduling Problem in Semiconductor Back-end Assembly." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/75563476548176832846.

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博士<br>國立清華大學<br>工業工程與工程管理學系<br>103<br>This study presents a simulation optimization approach for a hybrid flow shop scheduling problem in an actual semiconductor back-end assembly facility. The complexity of the problem is determined on the basis of demand and supply. Demand varies with orders, which are in turn characterized by different quantities, product types, and release times. Supply varies with the number of flexible manufacturing routes; however, this factor is constrained in a multi-line, multi-stage production system that utilizes specific types and numbers of both identical and unr

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Yang, Hsiang-ti, and 楊翔廸. "Parameter Optimization and Dynamic Analysis of a Back Pull Type Impact Sustentation System." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/05066649418477909166.

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碩士<br>逢甲大學<br>機械工程學所<br>98<br>he main concept of back pull impact sustentation systems focuses on by-guided vibration suppression. The design of this structure is to absorb the external substance force shock. This bumper is able to transmit the input shock into the far back of the vehicle and transfer the force into different directions. The original force will push the vehicle into the pull direction; meanwhile, it is being pulled by the internal spring in order to avoid the vehicle crash. This paper will apply SIMULINK simulation analysis software to discuss how influential this structure

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Lin, Hwun-Fong, and 林煥豐. "The Biped Robot Motion Control Using Back-Propagation Neural Network with Particle Swarm Optimization." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/10805052763785858623.

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碩士<br>龍華科技大學<br>工程技術研究所<br>97<br>This research is based on particle swarm algorithm combined with back-propagation neural network to improve the optimization of robot AI motor and the training strategy of the biped robot. The system is applied with AI motor feedback signals to compute the transfer function of the AI motor, and then through the manual mode to teach the motion trajectory for the motion control parameters of the biped robot . The system is implemented by Visual Basic and Matlab as a tool for program developments. In the research method and procedure, the PD parameters of AI mot

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Lin, Ih-Siang, and 林義翔. "The Back Analysis on the Ground Temperature of Artificial Ground Freezing Using Optimization Method." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/83704559711254398183.

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碩士<br>國立雲林科技大學<br>營建工程系碩士班<br>95<br>Due to its reversibility, flexibility and environmental benignity, artificial ground freezing (AGF) has been widely utilized on civil engineering projects for the construction of shafts, large open excavations, and tunnels. Practically, due to the difficulty in estimating the related thermal parameters of soil, the prediction on the ground temperature is usually based on empirical rule or oversimplified calculation methods. In view of the above, a two dimensional finite-element method coupling with nonlinear optimization method was adopted in this study to s

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Liu, Mi-Ni, and 劉宓霓. "Study of Fabrication Process Optimization of Interdigitated Back Contact (100) Mono-crystalline Silicon Solar Cells." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/17829008227727595667.

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碩士<br>國立雲林科技大學<br>機械工程系<br>102<br>This thesis is mainly to study the fabrication process optimization of interdigitated back contact (IBC) (100) mono-crystalline silicon solar cells (SCs). In this study, the 6 inch, (100), n-type CZ silicon wafer with a minority carrier lifetime of 30 μs, a thickness of 200 μm and a resistivity (ρ) of 2-7 ohm-cm is used as the starting substrate to fabricate IBCSCs by using the standard ICs and crystalline silicon (c-Si) solar cells processes. After the IBCSCs are completed, the solar simulator is used to measure and analyze the photovoltaic characteristic of

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Sundareswaran, Savithri. "Statistical characterization for timing sign-off : from silicon to design and back to silicon." 2009. http://hdl.handle.net/2152/6658.

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With aggressive technology scaling, within-die random variations are becoming the most dominant source of process variations. Gate-level statistical static timing is becoming a widely accepted approach as an alternative to static timing analysis. However, statistical timing approaches lack good models for handling timing variations due to within-die random variations. Before performing statistical timing analysis on a design or System On Chip (SoC), the cells in the library are pre-characterized for delay as well as constraints due to these random variations. This is referred to as statistical

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Lee, Ming-Shun, and 李明勳. "A Study of the Deformation Behavior of Gravel Tunnel based on Back Analysis by Optimization Method." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/38456753461549298624.

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碩士<br>國立臺灣科技大學<br>營建工程系<br>89<br>This research studied the excavation behavior of “Pakuashan tunnel”, which is being excavated in central Taiwan and is part of the Hanbau-Tsaotun Expressway. Two dimensional finite difference program, FLAC,was adopted to build a two dimensional numerical model to simulate multi-staged excavation of tunnel. This case was stuied with the simplex method of the optimization theory to reduce the analysis time of three dimensional program. By comparing the measurement data collected on the site with the analysis results, the elastic modulus (E) and the coefficient of

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Liao, Ying-Tzong, and 廖英宗. "A Study of Global Optimization Algorithms for Back Propagation - A Case Study of Freeway Incident Resource Allocation." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/48289535504478894579.

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碩士<br>淡江大學<br>運輸管理學系<br>88<br>Due to the significant learning ability, the Neural Network algorithm has been applied to all kinds of domains recently. However, the existence of local optimal points, using global searching algorithm to improve the performance for Back Propagation Network (BPN) becomes a common research topic. The investigation declared that Threshold Accepting (TA), Great Deluge Algorithm (GDA) and Simulated Annealing (SA) have better performance in solving problems with local optimal points. So, this study employs architecture of Neural Network as the kernel and combines wit

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Huang, Yi-Jie, and 黃義傑. "Using Back-Propagation Neural Network Optimization for Digital Watermarking Identification of the Spatial Domain and Frequency Domain." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/74p3d6.

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碩士<br>國立虎尾科技大學<br>電機工程研究所<br>102<br>The digital watermark is a popular way to protect intellectual properties and copyrights. Although the digital watermark is robust, environmental interference to images or artificial modification through network can ruin it. As the damage exceed the limit, the digital watermark can’t be extracted. This thesis talks about the identification of noise-interfered digital watermarks. We use a 32x32 image of our school’s badge as the watermark identification code. Three methods are used to embed this watermark into a 256x256 image of Lena. The first method is the

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Li, Hao-Wei, and 李皓瑋. "Applying Moving Bootstrap and Back-Propagation Neural Network for the Optimization Demand Forecasting Model of Spare Parts." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/64z45d.

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碩士<br>國立臺中科技大學<br>流通管理系碩士班<br>105<br>Inventory control of spare parts has been an essential to many organizations since it is one of the most expensive assets. Most of the spare parts are to belong to intermittent demand and Bootstrapping has been claimed to be of great value for forecasting. While a small proportion of spare parts are regard to regular demand, Moving Average, frequently used to deal with this type of demand. We address combination forecasting model by the Moving Bootstrap based on Bootstrapping and Moving Average to classify the appropriate method. Then use the Back-Propagati

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