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Articles 2851 - 2880 of 12584
Full-Text Articles in Entire DC Network
Permutation Decoding Of Codes From Graphs And Designs, Padmapani Seneviratne
Permutation Decoding Of Codes From Graphs And Designs, Padmapani Seneviratne
All Dissertations
Permutation decoding is a technique, developed by Jessie McWilliams in 1960's. It involves finding a set of automorphisms of the code, called a PD-set. If such a set exists and if the generator matrix of the code is in standard form then a simple algorithm using this set can be followed to correct the maximum number of errors of which the code is capable. Primarily this method was used originally on cyclic codes and Golay codes.
In this dissertation we study binary codes formed from an adjacency matrix of some classes of graphs and apply the permutation decoding method to …
Planning, Scheduling, And Timetabling In A University Setting, Christine Kraft
Planning, Scheduling, And Timetabling In A University Setting, Christine Kraft
All Dissertations
Methods and procedures for modeling university student populations, predicting course enrollment, allocating course seats, and timetabling final examinations are studied and proposed. The university enrollment model presented uses a multi-dimensional state space based on student demographics and the Markov property, rather than longitudinal data to model student movement. The procedure for creating adaptive course prediction models uses student characteristics to identify groups of undergraduates whose specific course enrollment rates are significantly different than the rest of the university population. Historical enrollment rates and current semester information complete the model for predicting enrollment for the coming semester. The course prediction model …
Non-Boltzamann Sampling For The Accurate Calculation Of Peptide-Surface Adsorption Free Energy, Feng Wang
Non-Boltzamann Sampling For The Accurate Calculation Of Peptide-Surface Adsorption Free Energy, Feng Wang
All Dissertations
%Abstract
The objectives of this project are 1) the setup and refinement of peptide-SAM surface model systems with explicit water using CHARMM and 2) the development of up-to-date simulation protocols for the accurate calculation of adsorption free energy by incorporating the recent development of non-Boltzmann sampling methods in molecular dynamics and applying it for the calculation of adsorption free energy of short peptides onto well-characterized self-assembled monolayers, which is important for understanding protein/surface interactions.
A software package called the Simulation Template Engine for Peptides at Surfaces (STEPS) was developed for the fulfillment of the first objective. It facilitates the automatic …
Control Techniques For Robot Manipulator Systems With Modeling Uncertainties, David Braganza
Control Techniques For Robot Manipulator Systems With Modeling Uncertainties, David Braganza
All Dissertations
This dissertation describes the design and implementation of various nonlinear control strategies for robot manipulators whose dynamic or kinematic models are uncertain. Chapter 2 describes the development of an adaptive task-space tracking controller for robot manipulators with uncertainty in the kinematic and dynamic models. The controller is developed based on the unit quaternion representation so that singularities associated with the otherwise commonly used three parameter representations are avoided. Experimental results for a planar application of the Barrett whole arm manipulator (WAM) are provided to illustrate the performance of the developed adaptive controller.
The controller developed in Chapter 2 requires the …
Linear-Time Algorithms For Edge-Based Problems, Alan Jamieson
Linear-Time Algorithms For Edge-Based Problems, Alan Jamieson
All Dissertations
There is a dearth of algorithms that deal with edge-based problems in trees, specifically algorithms for edge sets that satisfy a particular parameter. The goal of this thesis is to create a methodology for designing algorithms for these edge-based problems. We will present a variant of the Wimer method [Wimer et al. 1985] [Wimer 1987] that can handle edge properties. We call this variant the Wimer edge variant. The thesis is divided into three sections, the first being a chapter devoted to defining and discussing the Wimer edge variant in depth, showing how to develop an algorithm using this variant, …
Numerical Approximation Of Shear-Thinning And Johnson-Segalman Viscoelastic Fluid Flows, Jason Howell
Numerical Approximation Of Shear-Thinning And Johnson-Segalman Viscoelastic Fluid Flows, Jason Howell
All Dissertations
In this work computational approaches to the numerical simulation of steady-state viscoelastic fluid flow are investigated. In particular, two aspects of computing viscoelastic flows are of interest: 1) the stable computation of high Weissenberg number Johnson-Segalman fluids and 2) low-order approaches to simulating the flow of fluids obeying a power law constitutive model.
The numerical simulation of viscoelastic fluid flow becomes more difficult as a physical parameter, the Weissenberg number, increases. Specifically, at a Weissenberg number larger than a critical value, the iterative nonlinear solver fails to converge. For the nonlinear Johnson-Segalman constitutive model, defect-correction and continuation methods are examined …
Vertex-Edge And Edge-Vertex Parameters In Graphs, Jason Lewis
Vertex-Edge And Edge-Vertex Parameters In Graphs, Jason Lewis
All Dissertations
The majority of graph theory research on parameters involved with domination, independence, and irredundance has focused on either sets of vertices or sets of edges; for example, sets of vertices that dominate all other vertices or sets of edges that dominate all other edges. There has been very little research on ``mixing'' vertices and edges. We investigate several new and several little-studied parameters, including vertex-edge domination, vertex-edge irredundance, vertex-edge independence, edge-vertex domination, edge-vertex irredundance, and edge-vertex independence.
Quantitative Methods And Detection Techniques In Hyperspectral Imaging Involving Medical And Other Applications, Ankita Roy
All Dissertations
This research using Hyperspectral imaging involves recognizing targets through spatial and spectral matching and spectral un-mixing of data ranging from remote sensing to medical imaging kernels for clinical studies based on Hyperspectral data-sets generated using the VFTHSI [Visible Fourier Transform Hyperspectral Imager], whose high resolution Si detector makes the analysis achievable. The research may be broadly classified into (I) A Physically Motivated Correlation Formalism (PMCF), which places both spatial and spectral data on an equivalent mathematical footing in the context of a specific Kernel and (II) An application in RF plasma specie detection during carbon nanotube growing process. (III) Hyperspectral …
Nonlinear Vibration And Frequency Response Analysis Of Nanomechanical Cantilever Beams, Seyed Nima Mahmoodi
Nonlinear Vibration And Frequency Response Analysis Of Nanomechanical Cantilever Beams, Seyed Nima Mahmoodi
All Dissertations
Microcantilevers are one the most commonly utilized microelectromechanical systems in a variant of the ultra-precise scanning and characterization application. Of particular interest, the problem of vibrations of microcantilevers has recently received considerable attention due to its application in several nanotechnological instruments such as atomic force microscopy, nanomechanical cantilever sensors and friction force microscopy. For applications such as these, the problem of coupled flexural-torsional nonlinear vibrations of a piezoelectrically-actuated microcantilever beam is considered in this dissertation. The actuation and sensing are both facilitated through bonding a piezoelectric layer (here, ZnO) on the microcantilever surface. The beam is considered to have simultaneous …
Electronic Structure Of Mos2 Nanotubes, Lingyun Xu
Electronic Structure Of Mos2 Nanotubes, Lingyun Xu
All Dissertations
First-principles methods enable one to study the electronic structure of solids, surfaces, or clusters as accurately as possible with moderate computational effort.
So we used a first-principles electronic structure method to calculate the electronic structure of free-standing layer of MoS2 with ABA and ABC stacking. Our results suggest MoS2 with ABA stacking which appears as an insulator has an energy gap of 1.64 eV. The covalent bonds between molybdenum and sulfur atoms are strong enough to form this gap. The ABC stacking will break the symmetry and becomes metallic. The valance and impurities calculations show the rigid-band picture …
In Situ Photopolymerized Hydrogels For Enhancing Protein Delivery, Chien-Chi Lin
In Situ Photopolymerized Hydrogels For Enhancing Protein Delivery, Chien-Chi Lin
All Dissertations
In recent years, there has been immense interest in the utilization of photopolymerized hydrogels as carriers for controlled protein delivery and cell scaffolds for tissue engineering applications. Although poly(ethylene glycol) (PEG)-based hydrogels formed from mild photopolymerization methods have been suggested as biocompatible matrices that allow for safely encapsulating biomolecules including proteins, peptides, DNA, and cells, the adverse effects of photopolymerization reactions on the encapsulated proteins have largely been overlooked. In addition, conventional hydrophilic hydrogels fail to effectively control protein delivery rates due to their high permeability. These two problems are critical since the delivery of protein therapeutics from hydrogel matrices …
Nonlinear Control Strategies For Advanced Vehicle Thermal Management Systems, Mohammad Salah
Nonlinear Control Strategies For Advanced Vehicle Thermal Management Systems, Mohammad Salah
All Dissertations
Advanced thermal management systems for internal combustion engines can improve coolant temperature regulation and servo-motor power consumption to positively impact the tailpipe emissions, fuel economy, and parasitic losses by better regulating the combustion process with multiple computer controlled components. The traditional thermostat valve, coolant pump, and clutch-driven radiator fan are upgraded with servo-motor actuators. When the system components function harmoniously, desired thermal conditions can be accomplished in a power efficient manner. Although the vehicle's mechanical loads can be driven by electric servo-motors, the power demands often require large actuator sizes and electrical currents. Integrating hydraulically-driven actuators in the cooling circuit …
Thermodynamic Adsorption Studies Of Peptides On Well-Defined, Surface-Confined Polymers With Applications In Membrane Bioseparations, Nripen Singh
All Dissertations
This dissertation deals with the fundamental studies of peptide adsorption on surfaces modified by surface-confined polymer films, with an application emphasis on membrane bioseparations. In order to understand protein adsorption at a fundamental level, it is important to study the specific residue-level interactions with surfaces. Keeping this idea in view, the present work describes experimental measurements of submolecular-level interaction energies involved in the process of peptide adsorption on polymer films using surface plasmon resonance spectroscopy. Gibbs energy change on adsorption (ΔGad) for tyrosine, phenylalanine, and glycine homopeptides were measured at 25 °C and pH 7 on highly uniform, nanothin polymer …
Τέχνη And Quest-Oriented Learning, Sarah Matzko
Τέχνη And Quest-Oriented Learning, Sarah Matzko
All Dissertations
A new approach for teaching undergraduate computer science courses is presented. A general teaching approach that is its basis is also described. Summaries and guides to several introductory courses are provided. Results from the use of the curriculum are presented, and other applications of the approach are suggested.
Analysis Of Shanghai Port's Competitiveness After The Operation Of Yangshan Deep-Water Port, Wei Jiang
Analysis Of Shanghai Port's Competitiveness After The Operation Of Yangshan Deep-Water Port, Wei Jiang
World Maritime University Dissertations
No abstract provided.
The Study On Sinochem Shipping Corporation’S Fleet Expansion, Yunhao Ji
The Study On Sinochem Shipping Corporation’S Fleet Expansion, Yunhao Ji
World Maritime University Dissertations
No abstract provided.
Research Of Be550 Rigs Transportation Projects, Lifeng Shi
Research Of Be550 Rigs Transportation Projects, Lifeng Shi
World Maritime University Dissertations
No abstract provided.
The Study On Ningbo-Zhoushan Port's Integrative Development, Zaozhi Tao
The Study On Ningbo-Zhoushan Port's Integrative Development, Zaozhi Tao
World Maritime University Dissertations
No abstract provided.
The Analysis And Forecast Of Cargo Throughput In Inland Waterway Port Of Baoshan District, Shanghai, Xiang Gu
The Analysis And Forecast Of Cargo Throughput In Inland Waterway Port Of Baoshan District, Shanghai, Xiang Gu
World Maritime University Dissertations
No abstract provided.
Research On The Development Of Trans-Regional Operation Of Shanghai Yangshan Port, Die Wang
Research On The Development Of Trans-Regional Operation Of Shanghai Yangshan Port, Die Wang
World Maritime University Dissertations
No abstract provided.
The Logistics Supplier Selection Of Sgm With Ahp Method, Jian Wang
The Logistics Supplier Selection Of Sgm With Ahp Method, Jian Wang
World Maritime University Dissertations
No abstract provided.
Research On Multi-Agent-Based Shipping Information System, Kai Wang
Research On Multi-Agent-Based Shipping Information System, Kai Wang
World Maritime University Dissertations
No abstract provided.
A Study Of Activity-Based Cost Evaluation For The Performance Of Modern Shipbuilding Enterprise, Shuyu Wang
A Study Of Activity-Based Cost Evaluation For The Performance Of Modern Shipbuilding Enterprise, Shuyu Wang
World Maritime University Dissertations
No abstract provided.
Research On Development Strategy Of New Oriental Based On Cooperation Between Laingyungang Port And China Shipping, Yizhou Wei
World Maritime University Dissertations
No abstract provided.
A Contrastive Analysis On Logistics Costs Between China And Some Developed Countries, Xuanxuan Wu
A Contrastive Analysis On Logistics Costs Between China And Some Developed Countries, Xuanxuan Wu
World Maritime University Dissertations
No abstract provided.
Choice And Optimization Of Forecasting Models For Container Port Throughput, Qingcheng Xue
Choice And Optimization Of Forecasting Models For Container Port Throughput, Qingcheng Xue
World Maritime University Dissertations
No abstract provided.
Research On Establishment Of Oil Spill Emergency Response System In China Qingdao Port Based On Ann, Ge Zhang
Research On Establishment Of Oil Spill Emergency Response System In China Qingdao Port Based On Ann, Ge Zhang
World Maritime University Dissertations
No abstract provided.
Application Of Iso Tank In Chemimcal Logisitcs In China And Relative Issues, Hao Zhang
Application Of Iso Tank In Chemimcal Logisitcs In China And Relative Issues, Hao Zhang
World Maritime University Dissertations
No abstract provided.
On The Petroleum Security Strategy And Fleet Development Of China Shipping Tanker Company, Ye Zhao
On The Petroleum Security Strategy And Fleet Development Of China Shipping Tanker Company, Ye Zhao
World Maritime University Dissertations
No abstract provided.
The Study On The Empty Container Repositioning Of Container Leasing Company, Yi Zhao
The Study On The Empty Container Repositioning Of Container Leasing Company, Yi Zhao
World Maritime University Dissertations
No abstract provided.