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Dissertations / Theses on the topic 'Split Schemes'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 September 2023

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1

Nemec, Marian. "Aerodynamic computations using the convective upstream split pressure scheme with local preconditioning." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0013/MQ34104.pdf.

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2

Liu, Chun-Bin. "The Characteristic Based Split (CBS) scheme for laminar and turbulent incompressible flow simulations." Thesis, Swansea University, 2005. https://cronfa.swan.ac.uk/Record/cronfa42736.

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In this thesis, the matrix free Characteristic Based Split (CBS) scheme based on an artificial compressibility (AC) method and the semi-implicit CBS scheme are presented for laminar and turbulent incompressible flows. Numerical simulations of steady and unsteady state incompressible flow problems have been carried out on structured and unstructured meshes of linear triangular and tetrahedral elements. The standard Galerkin method was used for spatial discretization of the governing equations in their semi-discrete CBS form. Four different Reynolds average Navier-Stokes (RANS) turbulence models

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3

Hickey, Raymond. "A study of the characteristic based split scheme (CBS), considering the incorporation of 'speed up' techniques." Thesis, Swansea University, 2008. https://cronfa.swan.ac.uk/Record/cronfa42499.

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The scope of this dissertation centers on the application of the Characteristic Based SpHt (CBS) algorithm to the governing equations of compressible flow, represented by the conservation form of the Navier Stokes equations. It is proposed that the inherent stability of split algorithm alongside the explicit nature of the CBS scheme utilised in this dissertation will produce accurate results. To study the robustness and accuracy of the CBS scheme, various unstructured and hybrid meshes have been used. The method has been extended to three dimensions and the code parallelised to accelerate the

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4

Dourado, Diego Marques. "Estratégias para aumento da eficiência espectral e energética em redes TWDM-PON." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/18/18155/tde-11092017-113611/.

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O problema estudado relaciona-se ao planejamento de redes ópticas de acesso TWDM (Time and Wavelength Division Multiplexing), tendo como meta prover meios para atender ao consumo crescente de banda e, ao mesmo tempo, associar o mesmo ao menor consumo de energia possível e disponibilizar serviços de qualidade aos usuários da rede. Neste contexto, após a apresentação de uma revisão bibliográfica, alguns trabalhos foram selecionados como referências base para o estudo. Neste, foram analisadas técnicas de gerenciamento do comprimento de onda numa possível migração tecnológica dos equipamentos de a

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5

Hakala, Tim. "Settling-Time Improvements in Positioning Machines Subject to Nonlinear Friction Using Adaptive Impulse Control." BYU ScholarsArchive, 2006. https://scholarsarchive.byu.edu/etd/1061.

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A new method of adaptive impulse control is developed to precisely and quickly control the position of machine components subject to friction. Friction dominates the forces affecting fine positioning dynamics. Friction can depend on payload, velocity, step size, path, initial position, temperature, and other variables. Control problems such as steady-state error and limit cycles often arise when applying conventional control techniques to the position control problem. Studies in the last few decades have shown that impulsive control can produce repeatable displacements as small as ten nanomete

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6

"Profile Monitoring - Control Chart Schemes for Monitoring Linear and Low Order Polynomial Profiles." Doctoral diss., 2010. http://hdl.handle.net/2286/R.I.8771.

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abstract: The emergence of new technologies as well as a fresh look at analyzing existing processes have given rise to a new type of response characteristic, known as a profile. Profiles are useful when a quality variable is functionally dependent on one or more explanatory, or independent, variables. So, instead of observing a single measurement on each unit or product a set of values is obtained over a range which, when plotted, takes the shape of a curve. Traditional multivariate monitoring schemes are inadequate for monitoring profiles due to high dimensionality and poor use of the informa

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7

Wong, Wei-Zhe, and 翁偉哲. "New Bit-Line-Controlled Multi-Level Programming Schemes for Split-Gate Flash Memory." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/35894041424027775688.

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碩士<br>國立清華大學<br>電機工程學系<br>87<br>Flash memories belong to the family of non-volatile memories, the first conceptual MIMIS device structure was proposed by D. Kahng and S. M. Sze in 1967. Thank the advancement in semiconductor manufacturing technology, the cost reduction makes Flash memories a superstar in the coming era. The key to compete with other memories is to move toward high density, low power consumption, low cost and high efficiency. The first idea flashes when talking about Flash memories should be the well-known stacked-gate devices. Due to the small size and simple proces

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8

Shrivathsa, B. "Time Splitting Methods Applied To A Nonlinear Advective Equation." Thesis, 2006. https://etd.iisc.ac.in/handle/2005/417.

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Time splitting is a numerical procedure used in solution of partial diﬀerential equations whose solutions allow multiple time scales. Numerical schemes are split for handling the stiﬀness in equations, i.e. when there are multiple time scales with a few time scales being smaller than the others. When there are such terms with smaller time scales, due to the Courant number restriction, the computational cost becomes high if these terms are treated explicitly. In the present work a nonlinear advective equation is solved numerically using diﬀerent techniques based on a generalised framework fo

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9

Shrivathsa, B. "Time Splitting Methods Applied To A Nonlinear Advective Equation." Thesis, 2006. http://hdl.handle.net/2005/417.

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Time splitting is a numerical procedure used in solution of partial diﬀerential equations whose solutions allow multiple time scales. Numerical schemes are split for handling the stiﬀness in equations, i.e. when there are multiple time scales with a few time scales being smaller than the others. When there are such terms with smaller time scales, due to the Courant number restriction, the computational cost becomes high if these terms are treated explicitly. In the present work a nonlinear advective equation is solved numerically using diﬀerent techniques based on a generalised framework for

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10

Lin, Wei-Shih, and 林瑋時. "Pioneering Dual-Connectivity Handover Scheme in Control-/User-Plane Split Heterogeneous Networks." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/64162395811948104440.

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碩士<br>國立臺灣大學<br>電信工程學研究所<br>104<br>Nowadays, with rapidly developing technologies and the existence of new types of mobile devices, the demand for mobile wireless service increases exponentially. For satisfying rapidly increasing data rates, small cells are deployed in LTE-A. However, it also introduces additional challenges in interference management, resource allocation and seamless handover (HO). Particularly, HO performance, severely impacting the quality-of-service in heterogeneous networks (HetNets), has become an open issue because of high-frequent HOs and intolerable handover failure (

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11

Arora, Konark. "Weighted Least Squares Kinetic Upwind Method Using Eigendirections (WLSKUM-ED)." Thesis, 2006. https://etd.iisc.ac.in/handle/2005/538.

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Least Squares Kinetic Upwind Method (LSKUM), a grid free method based on kinetic schemes has been gaining popularity over the conventional CFD methods for computation of inviscid and viscous compressible ﬂows past complex conﬁgurations. The main reason for the growth of popularity of this method is its ability to work on any point distribution. The grid free methods do not require the grid for ﬂow simulation, which is an essential requirement for all other conventional CFD methods. However, they do require point distribution or a cloud of points. Point generation is relatively simple and

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12

Arora, Konark. "Weighted Least Squares Kinetic Upwind Method Using Eigendirections (WLSKUM-ED)." Thesis, 2006. http://hdl.handle.net/2005/538.

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Least Squares Kinetic Upwind Method (LSKUM), a grid free method based on kinetic schemes has been gaining popularity over the conventional CFD methods for computation of inviscid and viscous compressible ﬂows past complex conﬁgurations. The main reason for the growth of popularity of this method is its ability to work on any point distribution. The grid free methods do not require the grid for ﬂow simulation, which is an essential requirement for all other conventional CFD methods. However, they do require point distribution or a cloud of points. Point generation is relatively simple and less

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13

Chang, Hsiu-Wei, та 張修維. "Application of integral-type sliding mode scheme to electric vehicle's cornering and split-μbraking control". Thesis, 2014. http://ndltd.ncl.edu.tw/handle/932eyb.

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碩士<br>國立交通大學<br>電控工程研究所<br>102<br>This thesis investigates the control about cornering and split-μ braking maneuvers for a four-wheel independently actuated vehicle in the presence of uncertainties. These two maneuvers are often encountered during driving. If vehicle is not assisted with the control system, it is possible that vehicle loses its stability and safety in cornering and split-μ braking, which may results in serious car accidents. For these two issues, the control is realized with using the integral-type sliding mode control (ISMC) technique. It is shown that the vehicle under the I

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14

張庭豪. "Ground Bounce Reduction Scheme for Low Voltage 6T SRAM with Dual-Split-Control Assist Technique." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/04492825694464736068.

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15

Zheng, Guo-Liang, and 鄭國良. "Using Merge and Split scheme in GA for solving continuous uncapacitate single p－hub median problem." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/06093697775035354470.

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碩士<br>國立高雄應用科技大學<br>工業工程與管理系碩士班<br>95<br>This study deals with solving continuous uncapacitated single -hub median problem with Euclidean distance by using a method based on Genetic algorithms (GA). By treating －hub median problems as clustering problems, this is a kind of method to deal with this kind of problem effectively and rapidly. In this paper, a heuristic method is constructed by modifying a traditional Genetic algorithm with a merge and split procedure, and its performance is compared with tradition Genetic algorithms. We present the results of extensive computational experience wi

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16

Alzahrani, Hasnaa H. "Mixed, Nonsplit, Extended Stability, Stiff Integration of Reaction Diffusion Equations." Thesis, 2016. http://hdl.handle.net/10754/617606.

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A tailored integration scheme is developed to treat stiff reaction-diffusion prob- lems. The construction adapts a stiff solver, namely VODE, to treat reaction im- plicitly together with explicit treatment of diffusion. The second-order Runge-Kutta- Chebyshev (RKC) scheme is adjusted to integrate diffusion. Spatial operator is de- scretised by second-order finite differences on a uniform grid. The overall solution is advanced over S fractional stiff integrations, where S corresponds to the number of RKC stages. The behavior of the scheme is analyzed by applying it to three simple problems. The

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17

Wang, Yen Yao, and 王彥堯. "Two Step Charge Sharing Scheme for Low Power Static Random Access Memory with Dual-Split-Control Assist Technique." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/ua2pfx.

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碩士<br>國立清華大學<br>電機工程學系<br>103<br>Static Random Access Memory (SRAM) is an important circuit in the electronic products owing to the function of high-speed memory. It’s capacity is the main reason for affecting the speed of systems. In order to meet the substantial requirements of stored data, it occupies more and more area in the systems. Hence, the power consumption of SRAM becomes an indispensable issue. To reduce power consumption of SRAM, lowering the supply voltage is a direct and effective way. Nevertheless, SRAM operating at low VDD would suffer from the following issue : (1) write

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