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Dissertations / Theses on the topic 'Block Method'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Altai, Wihel. "Lagrangian block method." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=38099.

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The Lagrangian Block Method (LBM) developed in this thesis is a simulation method. Flow properties are transported in the direction of the velocity following a Lagrangian procedure. The computational elements of the LBM are systems of blocks. These blocks are utilized in the method as containers for the storage of the flow properties (masses). During the computation, the masses in the blocks remain positive, and the total mass in the system is conserved. The resolution of the method is accurate to within one to two computational blocks. The LBM is also unconditionally stable. Accurate results

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2

Briskman, Jonathan. "Block Kaczmarz Method with Inequalities." Scholarship @ Claremont, 2014. http://scholarship.claremont.edu/cmc_theses/862.

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The Kaczmarz method is an iterative algorithm that solves overdetermined systems of linear equalities. This paper studies a system of linear equalities and inequalities. We use the block version of the Kaczmarz method applied towards the equalities with the simple randomized Kaczmarz scheme for the inequalities. This primarily involves combining Needell and Tropp's work on the block Kaczmarz method with the application of a randomized Kaczmarz approach towards a system of equalities and inequalities performed by Leventhal and Lewis. We give an expected linear rate of convergence for this kind

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3

Boyanova, Petia. "On Numerical Solution Methods for Block-Structured Discrete Systems." Doctoral thesis, Uppsala universitet, Avdelningen för beräkningsvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-173530.

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The development, analysis, and implementation of efficient methods to solve algebraic systems of equations are main research directions in the field of numerical simulation and are the focus of this thesis. Due to their lesser demands for computer resources, iterative solution methods are the choice to make, when very large scale simulations have to be performed. To improve their efficiency, iterative methods are combined with proper techniques to accelerate convergence. A general technique to do this is to use a so-called preconditioner. Constructing and analysing various preconditioning meth

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4

Yang, Xiaolin. "Direct and Line Based Iterative Methods for Solving Sparse Block Linear Systems." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1543921330763997.

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5

Erdem, Ayan. "Performance Analyses Of Newton Method For Multi-block Structured Grids." Thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613704/index.pdf.

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In order to make use of Newton&rsquo<br>s method for complex flow domains, an Euler multi-block Newton solver is developed. The generated Newton solver uses Analytical Jacobian derivation technique to construct the Jacobian matrices with different flux discretization schemes up to the second order face interpolations. Constructed sparse matrices are solved by parallel and series matrix solvers. In order to use structured grids for complex domains, multi-block grid construction is needed. Each block has its own Jacobian matrices and during the iterations the communication between the blocks sho

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6

Abd, El Wahab Madiha A. "Block diagonal schemes for hyperbolic equation using finite element method." Thesis, University of Liverpool, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329374.

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7

Skarvelas, Georgios Aristeidis. "Reinforcement and Bonded Block Modelling." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-85984.

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The objective of this master’s thesis is to evaluate the use of Bonded Block Modelling (BBM) in 3DEC software combined with hybrid rock bolts, for three different cases. These cases included the laboratory rock bolt case, the shearing case and the blocky rock mass case. 3DEC is a Distinct Element Method (DEM) numerical software which can be used to simulate both continuum and discontinuum media in 3D. The Bonded Block Model in 3DEC can be used to simulate a rock mass as bonded polyhedral elements. The BBM is a relatively new numerical modelling technique. Earlier studies have focused mainly on

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8

Michaud-Rioux, Vincent. "Real space DFT by locally optimal block preconditioned conjugate gradient method." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110628.

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In condensed matter physics, atomistic first principle calculations are often necessary to achieve a microscopic understanding of the observed experimental phenomena and to make quantitative predictions of physical properties. In practice, atomic scale systems have irregularities (e.g. surface roughness) or defects (e.g. substitutional atoms or vacancies) that are too strong to be ignored or treated as small perturbations. In this thesis, we report the development of a real space DFT code for studying atomic scale systems from first principles. Our code, named MatRcal, which stands for "Matlab

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9

Shi, Chao. "Finite Block Method and applications in engineering with Functional Graded Materials." Thesis, Queen Mary, University of London, 2018. http://qmro.qmul.ac.uk/xmlui/handle/123456789/39764.

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Fracture mechanics plays an important role in understanding the performance of all types of materials including Functionally Graded Materials (FGMs). Recently, FGMs have attracted the attention of various scholars and engineers around the world since its specific material properties can smoothly vary along the geometries. In this thesis, the Finite Block Method (FBM), based on a 1D differential matrix derived from the Lagrangian Interpolation Method, has been presented for the evaluation of the mechanical properties of FGMs on both static and dynamic analysis. Additionally, the coefficient dif

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10

Ferreira, Vitor Maciel Vilela. "A hybrid les / lagrangian fdf method on adaptive, block-structured mesh." Universidade Federal de Uberlândia, 2015. https://repositorio.ufu.br/handle/123456789/14982.

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Fundação de Amparo a Pesquisa do Estado de Minas Gerais<br>Esta dissertação é parte de um amplo projeto de pesquisa, que visa ao desenvolvimento de uma plataforma computacional de dinâmica dos fluidos (CFD) capaz de simular a física de escoamentos que envolvem mistura de várias espécies químicas, com reação e combustão, utilizando um método hibrido Simulação de Grandes Escalas (LES) / Função Densidade Filtrada (FDF) Lagrangiana em malha adaptativa, bloco-estruturada. Uma vez que escoamentos com mistura proporcionam fenômenos que podem ser correlacionados com a combustão em escoamentos turbulen

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11

Foley, Jessica Lynne. "High-intensity focused ultrasound as a novel method of nerve conduction block : dose-dependent effects range from partial to complete block /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/7981.

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12

Ham, Franklin Edward. "Flow simulation using the finite analytic method with multi-block body-fitted grids." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0014/MQ31580.pdf.

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13

Larson, Gabrielle Lynn. "The enhancement of a block-oriented modeling method to improve inference and prediction." [Ames, Iowa : Iowa State University], 2006.

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14

Hinneh, Perry. "The Finite Block Method : a meshless study of interface cracks in bi-materials." Thesis, Queen Mary, University of London, 2018. http://qmro.qmul.ac.uk/xmlui/handle/123456789/39754.

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The ability to extract accurately the stress intensity factor and the T-Stress for fractured engineering materials is very significant in the decision-making process for in-service engineering components, mainly for their functionality and operating limit. The subject of computational fracture mechanics in engineering make this possible without resulting to expensive experimental processes. In this thesis, the Finite Block Method (FBM) has been developed for the meshless study of interface stationary crack under both static and dynamic loading in bi-materials. The finite block method based on

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15

Hagström, Adrian, and Rustam Stanikzai. "Writer identification using semi-supervised GAN and LSR method on offline block characters." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-43316.

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Block characters are often used when filling out forms, for example when writing ones personal number. The question of whether or not there is recoverable, biometric (identity related) information within individual digits of hand written personal numbers is then relevant. This thesis investigates the question by using both handcrafted features and extracting features via Deep learning (DL) models, and successively limiting the amount of available training samples. Some recent works using DL have presented semi-supervised methods using Generative adveserial network (GAN) generated data together

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Nergiz, Cengiz. "Development Of A Stability Analysis Program For Block Type Quay Walls And Comparison Of Block Placing Methods." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/2/12611584/index.pdf.

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Block type quay walls are commonly used as berthing structures both in Turkey and worldwide. In this study, stability analysis of block type quay wall is carried out using pseudo-static method. A computer program named QSAP (using Excel spreadsheet) has been developed for the design of block type quay walls. QSAP has been prepared based on the rules of Turkish Seismic Design Codes for Coastal Structures, 2008. Reliability of this program is verified by a comparative study of Derince Port block type quay wall, damaged in Marmara earthquake (1999), with manual solution and field measurements. A

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17

Connolly, Kevin John. "A coarse mesh radiation transport method for prismatic block thermal reactors in two dimensions." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/44823.

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In this paper, the coarse mesh transport method is extended to hexagonal geometry. This stochastic-deterministic hybrid transport method calculates the eigenvalue and explicit pin fission density profile of hexagonal reactor cores. It models the exact detail within complex heterogeneous cores without homogenizing regions or materials, and neither block-level nor core-level asymmetry poses any limitations to the method. It solves eigenvalue problems by first splitting the core into a set of coarse meshes, and then using Monte Carlo methods to create a library of response expansion coefficien

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18

Sternini, Simone. "On the identification of bridge decks aeroelastic coefficients: the covariance block hankel matrix method." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/5999/.

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Il seguente elaborato si concentra sull'identifi�cazione strutturale di sistemi soggetti a sollecitazioni aeroelastiche e nello speci�fico l'attenzione viene rivolta ad impalcati da ponte. Si analizzano i concetti principali caratterizzanti il campo dell'aeroelasticità indagando i fattori dominanti che entrano in gioco sul piano teorico. In seguito, si considera il metodo di identifi�cazione strutturale chiamato Covariance Block Hankel Matrix (CBHM) utilizzato come strumento di derivazione dei coeffi�cienti aeroelastici propri della struttura. Infi�ne, si indaga il comportamento di questo me

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19

Hua, Xiaoqin. "Studies on block coordinate gradient methods for nonlinear optimization problems with separable structure." 京都大学 (Kyoto University), 2015. http://hdl.handle.net/2433/199447.

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20

Qiang, Zhe. "A GENERALIZED METHOD FOR ALIGNMENT OF BLOCK COPOLYMER FILMS AND LARGE-SCALE FABRICATION OF TEMPLATED MESOPOROUS MATERIALS." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1479221944217468.

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21

Leonardi, Christopher Ross. "Development of a computational framework coupling the non-Newtonian lattice Boltzmann method and the discrete element method with application to block caving." Thesis, Swansea University, 2009. https://cronfa.swan.ac.uk/Record/cronfa42882.

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22

Sun, Ning. "Development and validation of a design method coupling block theory and three-dimensional discontinuous deformation analysis." Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B31789122.

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Sun, Ning, and 孫宁. "Development and validation of a design method coupling block theory and three-dimensional discontinuous deformation analysis." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B31789122.

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24

AGRAMONTE, FREDY ALVARO ELORRIETA. "APPLICATION OF THE DISCRETE ELEMENT METHOD FOR MODELLING THE BLOCK-FLEXURAL TOPPLING MECHANISMS IN ROCK SLOPES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2014. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=27076@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE EXCELENCIA ACADEMICA<br>Em um maciço rochoso, as fraturas apresentam-se de forma irregular e descontínua. A complexidade na distribuição espacial destas descontinuidades faz com que o mecanismo de ruptura por tombamento ocorra mais frequentemente por uma combinação de dois tipos de fenômenos: Tombamento de blocos e flexural. Assim, a ruptura por tombamento do tipo bloco-flexural pode ser considerada a forma mais comum presente neste tipo de mecanismo. Trabalhos util

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25

Walker, Jeanette. "A sustainability assessment method for greenfields, low cost, cement block housing developments on the Cape Flats." Master's thesis, University of Cape Town, 1999. http://hdl.handle.net/11427/16840.

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Bibliography: pages 107-112.<br>This dissertation describes the development and pilot application of a sustainability assessment method for greenfields, low cost, cement block housing developments on the Cape Flats. The aim of this assessment method is to provide a means for assessing the sustainability of these low cost housing developments. The sustainability assessment method was developed within the theoretical parameters of sustainable development and sustainable construction. Literature relating to sustainable development, sustainable construction, green building and low cost housing was

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26

Rojas-Candio, Piero, Arturo Villantoy-Pasapera, Jimmy Armas-Aguirre, and Santiago Aguirre-Mayorga. "Evaluation Method of Variables and Indicators for Surgery Block Process Using Process Mining and Data Visualization." Repositorio Academico - UPC, 2021. http://hdl.handle.net/10757/653799.

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El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.<br>In this paper, we proposed a method that allows us to formulate and evaluate process mining indicators through questions related to the process traceability, and to bring about a clear understanding of the process variables through data visualization techniques. This proposal identifies bottlenecks and violations of policies that arise due to the difficulty of carrying out measurements and analysis for the improvement of process quality assuran

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27

Weisbecker, Clément. "Improving multifrontal solvers by means of algebraic Block Low-Rank representations." Phd thesis, Toulouse, INPT, 2013. http://oatao.univ-toulouse.fr/10506/1/weisbecker.pdf.

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We consider the solution of large sparse linear systems by means of direct factorization based on a multifrontal approach. Although numerically robust and easy to use (it only needs algebraic information: the input matrix A and a right-hand side b, even if it can also digest preprocessing strategies based on geometric information), direct factorization methods are computationally intensive both in terms of memory and operations, which limits their scope on very large problems (matrices with up to few hundred millions of equations). This work focuses on exploiting low-rank approximations on mul

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28

Wang, Jieyu. "Application of advanced diagonalization methods to quantum spin systems." Thesis, Laurentian University of Sudbury, 2014. https://zone.biblio.laurentian.ca/dspace/handle/10219/2189.

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Quantum spin models play an important role in theoretical condensed matter physics and quantum information theory. One numerical technique that is frequently used in studies of quantum spin systems is exact diagonalization. In this approach, numerical methods are used to find the lowest eigenvalues and associated eigenvectors of the Hamilton matrix of the quantum system. The computational problem is thus to determine the lowest eigenpairs of an extremely large, sparse matrix. Although many sophisticated iterative techniques for the determination of a small number of lowest eigenpairs can be fo

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29

Karakus, Hulya. "New Seismic Design Approaches For Block Type Quay Walls." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608584/index.pdf.

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In this study, new design approaches are introduced for the seismic design of block type quay walls after reviewing the conventional methodologies. Within the development of the new design approaches an inverse triangular dynamic pressures distributions are applied to define both seismic earth pressures and seismic surcharge pressures. Differently from the conventional design methodology, the hydrodynamic forces are taken into consideration while dynamic forces are specified and equivalent unit weight concept is used during the both static and dynamic calculations Compatibility of this new des

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Nabar, Gauri M. "Encapsulation of nanoparticles and polymers within block copolymer micelles prepared by the emulsion and solvent evaporation method." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1503199514997833.

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31

Nakiboglu, Gunes. "Development Of An Educational Cfd Software For Two Dimensional Incompressible Flows." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12608562/index.pdf.

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The main purpose of this research is to develop a Computational Fluid Dynamics (CFD) software to be used as an educational tool in teaching introductory level fluid mechanics and CFD courses. The software developed for this purpose is called Virtual Flow Lab. It has a graphical user interface (GUI) that enables basic pre-processing, solver parameter and boundary condition setting and post-processing steps of a typical CFD simulation. The pressure-based solver is capable of solving incompressible, laminar, steady or time-dependent problems on two-dimensional Cartesian grids using the SIMPLE alg

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Songulen, Nazli. "Space Organisation In Urban Block: Interfaces Among Public, Common And Private Spaces Based On Conzen Method In Bahcelievler." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614461/index.pdf.

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Space organisation of urban blocks is a significant topic of urban design field to achieve correlated urban parts that enhance the variety in urban spaces. However, the rapid urban transformation experienced in the Turkish cities resulted in the generation of similar urban blocks with the lack of spatial variety. Therefore, a re-evolution of space organisation concepts for urban blocks emerges as a design problem in order to cope with the defined problem. From this point of view, the interfaces among public, common and private spaces as the formative parts of space organisation process constit

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Desbaumes, Luc. "Formation of crew-cut aggregates from an amphiphilic block copolymer via a single-solvent method and related studies." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0014/MQ50756.pdf.

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34

Wang, Hu-yi, and 王豪逸. "Fast Exponentiation with Block-Shift Computing Method." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/37689553944923968187.

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碩士<br>國立中山大學<br>資訊工程學系研究所<br>92<br>The computation of modular exponentiation in a finite multiplication group, or scalar multiplication in elliptic curves, is the most time-consuming operations for many cryptosystems, such as RSA or DSA. In this thesis we first introduce some researched techniques for the exponentiation, then we propose an idea to speed up the computation for pairs of integers, e.g. $c=a^xb^y$, or $C=xA+yB$ in elliptic curves, by adjusting the computing sequence of the Shamir method and shifting the two integer''s nonzero bits. So that the number of matched nonzero bits is max

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WANG, ZHI-XIAN, and 王志賢. "The finite-block method and its application." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/15849693403333008723.

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Chen, Yi-Cheng, and 陳義程. "Modified Block Shift Method for Differential GPS." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/93373775564064885331.

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碩士<br>國立臺灣海洋大學<br>通訊與導航工程學系<br>101<br>There are two methods of DGPS to improve positioning accuracy, one is pseudo-range correction method, the other is block shift method. The GPS chip in the consumer electronics provide NMEA format data, which like user’s position and satellite information. Due to the NMEA data limit, only block shift method can be used with an already-calculated position. Block shift method has a limited applicability which is the reference and rover station must receive the observations from the same satellite constellation to mitigate the influence by the ranging errors.

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Hong, Shi Geng, and 洪士耕. "Competing Codeword Searching Method for Block Turbo Decoding." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/04517145994570594909.

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碩士<br>長庚大學<br>電機工程學研究所<br>96<br>In [18], Ramesh Mahendra Pyndiah uses the maximum a posteriori (MAP) theorem to search the competing codeword, but perhaps appeal the condition that can’t find the competing codeword, then he uses a parameter β, according to the iteration times increasing, extrinsic information is more correct and the value of parameter β also increasing, to approximate. Relatively, the performance of BER can’t achieve optimization. It is an interest topic that how to use the simplest and lowest complex method to find the competing codeword of BTC without using parameter β. I

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Tsai, Hsin-Nan. "Lossless Image Compression Method Based on Block Grouping." 2007. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0020-1607200710474000.

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Tsai, Hsin-Nan, and 蔡信男. "Lossless Image Compression Method Based on Block Grouping." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/07527856618461595422.

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碩士<br>國立暨南國際大學<br>資訊工程學系<br>95<br>This thesis proposes a lossless image compression technique for gray level images. This method employs a median edge detector (MED) on the input image to produce a difference image and a sign image. Then, in order to reduce the complexity of the sign image, bits transformation is adopted to transform the bits between the sign image and the most significant bits (MSB) in difference image. The resultant image blocks, according to the maximum value of image block, are classified into data bins, each of which has different data patterns. Finally, the arithmeti

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Hsu, Po-Ming, and 許博閔. "REVERSIBLE DATA HIDING BASED ON DIFFERENCE BLOCK DIVISION METHOD." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/61911870260873218638.

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碩士<br>大同大學<br>電機工程學系(所)<br>97<br>This thesis presents two reversible data hiding methods. The first reversible data hiding method embeds data used on integer transform and histogram shifting. The inverse transform exploits the correlations among adjacent pixels in an image. We calculate the mean and difference values of the adjacent pixels. We use different block of size and overlapping two layer difference value of histogram, not only we can embed data into the image, but also data capacity is better. So the object of data hiding is arrived. The second reversible data hiding method embeds dat

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Tsai, Li-Ting, and 蔡立婷. "Efficient Adaptive Block-Based Light-Balancing Method for Document Images." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/qk76r9.

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碩士<br>國立臺灣科技大學<br>資訊工程系<br>95<br>Due to uneven light distribution, document images often suffer from uneven illumination side effect. Recently, Hsia et al. presented an efficient line-based light-balancing method to alleviate this uneven illumination problem. This thesis presents an adaptive block-based light-balancing method to simulate the background efficiently. First, we determine the typical height of words in the document image, then according to the detected height, the document image is partitioned into a set of blocks in which each block is classified to a smooth block or non-smooth b

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Guo, Jan-Lie, and 郭展列. "Thresholded Two-path Search Method for Video Block Motion Estimation." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/02282950769022470115.

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碩士<br>國立高雄第一科技大學<br>電腦與通訊工程系<br>89<br>In video coding, motion estimation is an efficient predictive coding for successive digital image sequence. Motion estimation was adopted by many international standards for video coding such as H.261, H.263, MPEG-1, MPEG-2. Motion estimation is a predictive technique which explore temporal redundancy between successive frames of video sequence. Block matching is an efficient and simple method to perform motion estimation. By dividing each frame into rectangular block, motion vectors are obtained via block matching algorithms（BMA）. The kind of method is th

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Huang, Ching-Huan, and 黃景煥. "A Steganography Method by Block Analysis in Gray Level Images." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/76888683254500885591.

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碩士<br>國立清華大學<br>資訊工程學系<br>93<br>We have proposed a novel and secure steganographic method for embedding secret data into a gray scale image in this thesis. In the embedding process, the image is partitioned into non-overlapping blocks. The pixels in a block are classified into unchangeable pixels and changeable pixels. The average of the gray values of unchangeable pixels in each block is calculated as . The embedded amount of data for each changeable pixel is determined by the difference between and the gray value of the changeable pixel. A larger difference embeds a higher amount of secret

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Tsai, Yu-Jer, and 蔡宇哲. "DCT/Quantization and Motion Search Method on Zero-Block Detection." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/qxysd6.

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碩士<br>國立中央大學<br>通訊工程研究所<br>94<br>The different samples of video sequence which varies from the scale of background and slow motion. Basis on the characteristic of Early detection Zero Block Algorithm, we could detect the zero block and skip the process of DCT transformation and Quantization without damaging the image’s quality. There are two subjects will further discuss in the paper. For the first one, we are going to demonstrate a maximum approaching threshold which can detect more zero blocks than the former threshold. For the second part, we take the advantage of zero blocks, which can sh

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cheng, chih-chieh, and 鄭至傑. "Block predictor – corrector method on Python-based distributed computing environment." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/40855202325662510816.

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碩士<br>中華大學<br>應用統計學系碩士班<br>99<br>In this thesis, we study how to apply Python to do parallel computation in a distributed computing structure. MPI-2 (Message Passing Interface) is implemented to be a basic standard on parallel processing to communicate between each CPU inside the structure. MPICH2 (Message Passing Interface Chameleon) is implemented to let individual CPU to do data transmission and reception between other CPUs. While controlling and manipulation of the process is proceed by applying the functions; send、recv、get_size、get_rank, etc, in the package of mpi4py by Python. Numerical

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Su, Guan-Yu, and 蘇冠宇. "Face Hallucination by Global And Local Feature Block Embedding Method." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/9e9na6.

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Dang, Jiarui. "Empirical Analysis of Algorithms for Block-Angular Linear Programs." Thesis, 2007. http://hdl.handle.net/10012/3189.

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This thesis aims to study the theoretical complexity and empirical performance of decomposition algorithms. We focus on linear programs with a block-angular structure. Decomposition algorithms used to be the only way to solve large-scale special structured problems, in terms of memory limit and CPU time. However, with the advances in computer technology over the past few decades, many large-scale problems can now be solved simply by using some general purpose LP software, without exploiting the problems' inner structures. A question arises naturally, should we solve a structured problem wi

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Chen, Chien-Hung, and 陳建宏. "A True Random Number Encryption Method Employing Block Cipher and PRNG." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/27602018916540242143.

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碩士<br>東海大學<br>資訊工程學系<br>102<br>In January 1999, distributed.net collaborated with the Electronic Frontier Foundation to break a DES (i.e., Data Encryption Standard) key, spending 22 hours and 15 minutes, and implying that the DES is no longer a secure encryption method. In this paper, we propose a more secure one, called the True Random Number Encryption Method (TRNEM for short), which employs current time, true random numbers and system security codes as parameters of the encryption process to increase the security level of a system. The same plaintext file encrypted by the TRNEM at differen

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Tsai, Chin-Pao, and 蔡金寶. "Block-Based Adaptive Multi-State Median Filtering Method for Corrupted Images." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/80796611597497976432.

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碩士<br>國立高雄應用科技大學<br>電子與資訊工程研究所碩士班<br>95<br>The images are often corrupted by impulse noise due to a noisy sensor or channel transmission errors. Impulse noise seriously affects the performance of image processing techniques, e.g., pattern recognition, image segmentation and image compression. So, it is an important research for image restoration by reducing impulse noise. A lot of methods were proposed for impulse noise reduction that use single working window to filter image. Using single working window to remove impulse noise will smooth the details and decrease the performance in restoratio

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Liu, Shu Chen, and 劉淑貞. "The Stable Regions of Multi-Block Predictor-Corrector Method for ODE's." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/75407656621700670775.

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碩士<br>國立中正大學<br>數學研究所<br>91<br>The multi-block predictor-corrector method(BPC) is one of the efficient and accurate method for solving the numerical solution of the ordinary differential equations. By choosing some suitable matrix coefficients in two schemes with repeated self-correcting processes, P(EC)^nE,n=1,2,...,we investigate and compare the corresponging changes of the stable regions. We also vary the coefficients matrix in the local truncation error to study the responses about the stable respectively.

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