Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"Close Form"”.
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Close-form and matrix en/decoding evaluation on Different Erasure Codes
… of most popular erasure codes on RAID6, and with close-form reconstruction, it can achieve optimal com- putational cost in terms of XORs. However, as the extension of RDP, close-form of RAID-TP(RTP) which provides triple failure protection can not achieve opti-mal computational cost. There is an …
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Channel Estimation Overhead Reduction for Downlink FDD Massive MIMO Systems
… spectral efficiency of the communication system. Close form expressions of the asymptotic MSE and the spectral efficiency lower bound are obtained. Furthermore, perfect match between theoretical and simulation results is observed, and results show the feasibility of our proposed scheme.</p>
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Analytical study and cost modeling of secondary aluminum consumption for alloy producers under uncertain demands
… study on a simplified case scenario suggested a close form expression to well explain the hedging behavior and the impacts of various factors observed in case studies. The thesis then explored the effects of commonality shared by secondary materials in their application in multiple final …
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A study of two dimensional braided composites
… of 2-D braided composite is obtained in a close form by the analysis of elastic deformation energy in repeat-unit-cell of braided composites. Effective stiffness consists of contributions of axial yarn, braiding yarn, and matrix material. Each of them takes a different weight in the …
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Survivor bond models for securitizing longevity risk
… processes and martingale machinery, we obtain close form representations for the model’s unknowns. We use the bond pricing approach from Wills and Sherris (2010) to price longevity bonds with this mortality model. Numerical studies suggest that asymptotic properties of model parameter …
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Modelling portfolios of credit securities
… a PCA analysis on CDO market spreads is performed on market data in CHAPTER 3. In CHAPTER 4, we develop an old school dynamic model for credit derivative valuation, it match the market needs, fit quoted spreads while providing time evolution using historical market observable measure. …
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Computation Of The Response Of Thin Piezoelectric Films
… conditions. Another application is cases where close form equations cannot be derived and the only data available are discrete or experimental. Moreover, in sensor design applications where the film is often shaped so that its output charge corresponds to a specific structural dynamic property, …
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Study of Vortex Ring Dynamics in the Nonlinear Schrödinger Equation Utilizing GPU-Accelerated High-Order Compact Numerical Integrators
… of choreographed multi-ring setups are also performed, leading to intriguing interaction dynamics.</p> <p>Due to the inherent lack of a close form solution for vortex rings and the dimensionality where they live, efficient numerical methods to integrate the NLSE have to be developed in order to …
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Heat transfer enhancement phenomena and pressure drop characteristics in two-phase pulsating flow using R-134A
… and used as the basis of a newly proposed close-form model for predicting the heat transfer and pressure drop for pulsating two-phase flow based on the quasi-steady state assumption. The enhancement of heat transfer in saturated boiling pulsating two-phase flow was found to be higher in …
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Least squares estimation for latent variables with dichotomous item response data
… no specific assumption. By re-examining the performance of maximizing the ln $L$ of the joint maximum likelihood estimation (JMLE; Lord, 1980), and by applying theorems taken from Rockafellar (1970), it was proved that ln $L$ has a unique global maximum point. The performance of maximizing ln …
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Analysis of parabolic through collector cleaning system under adaptive scheduling policy
… scheduling plant cleaning that analogous to the formulation of a (s,S) inventory management policy, subject to random replenishment of inventory. The study offers a review of related literature to establish that such formulations are not amenable to a close form solution. The second half of the …
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Power and Rate Optimization in Shared-Spectrum Wireless Communication Networks
… of the precious bandwidth and optimizing the performance. Adaptive algorithms are a vital feature of radio resource management (RRM) in third generation (3G) communication systems, and cognitive radio (CR) is a valuable technique with tremendous potential for improving the utilization of the …