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An Eulerian Finite Element Model For Determination Of Deformation State Of A Copper Subjected To Orthogonal Cutting., Anna G. Raczy
An Eulerian Finite Element Model For Determination Of Deformation State Of A Copper Subjected To Orthogonal Cutting., Anna G. Raczy
Electronic Theses and Dissertations
The aim of the present work was to develop a finite element model for the prediction of the deformation state of copper subjected to orthogonal cutting. Research completed in the present work showed that the Eulerian element formulation was the most effective in modeling metal cutting, especially when the hydrodynamic material model was employed to represent the workpiece. The following correlations were drawn between the experimental findings and the numerical model employing the hydrodynamic material: (1) The maximum experimental stress (sigma = 422 MPa) and strain (epsilon p = 8.1) were located at the tool tip and corresponded well with …
Dolomitization Of The Devonian Wabamun Carbonates In The Gold Creek Field West Central Alberta, Canada., Daniel A. Rivas C.
Dolomitization Of The Devonian Wabamun Carbonates In The Gold Creek Field West Central Alberta, Canada., Daniel A. Rivas C.
Electronic Theses and Dissertations
In the Peace River Arch (PRA), the Wabamun Group is commonly dolomitized where it overlies Leduc or Nisku patch reefs, grading from limestone to dolostone over relatively short distances. This suggests that fluid-flow accessed the porous carbonate buildups favored dolomitization in the overlying Wabamun. Differential compaction between the rigid reef framework and the surrounding shales (Ireton Formation) during Late Devonian to Early Mississippian is thought to be the trigger for the development of fault and fracture systems that ultimately allowed diagenetic fluids which favored the dolomitization of the Wabamun carbonates. The present study is focused on understanding the dolomitization process …
Effects Of Temperature, Emergence Date, And Plasticity On Embryo And Nymphal Development In Three Mayfly (Hexagenia Limbata) Populations., Ajay K. Sharma
Effects Of Temperature, Emergence Date, And Plasticity On Embryo And Nymphal Development In Three Mayfly (Hexagenia Limbata) Populations., Ajay K. Sharma
Electronic Theses and Dissertations
Hexagenia limbata are burrowing mayflies that inhabit the Great Lakes and their connecting channels. The objectives of this study were to quantify the differences in seasonal adult emergence patterns between sexes and species. The final objective was to examine egg and nymphal development as a response to emergence date and temperature as well as the degree of plasticity displayed in their development. Adult mayflies were collected for 2 h at sunset from quadrates placed on land near dock lights at Colchester Harbour, Lake Erie, throughout the emergence period, June through August. In the laboratory I conducted a reciprocal transplant experiment …
The Relationship Between Self-Perception And Academic Achievement Among Native Students In Grade Five And Grade Six, Connie Mcgregor
The Relationship Between Self-Perception And Academic Achievement Among Native Students In Grade Five And Grade Six, Connie Mcgregor
Electronic Theses and Dissertations
The relationship between Self-Perception and Academic Achievement among Native students in grades five and six were examined. Forty-three students responded to the Self-Perception Profile for Children (Harter, 1985) which was used to assess self-perception. The Self-Perception variables examined were Scholastic Competence, Social Acceptance, Athletic Competence, Physical Appearance, Behavioral Conduct and Global Self-Worth. Academic Achievement was assessed by the Achievement Report prepared by the students' teachers. Achievement was measured in the following academic subjects: Language Arts (Listening, Oral Language, Reading, Grammar, Written Language, Spelling, Penmanship), Mathematics, Environmental Studies (Science, Social Studies, Health), Computers, Physical Education, Art, Drama and Study Skills. Correlational …
Phosphonium Stoppered [2]Rotaxanes And Molecular Shuttles., Norma Georges
Phosphonium Stoppered [2]Rotaxanes And Molecular Shuttles., Norma Georges
Electronic Theses and Dissertations
This thesis deals with the synthesis of [2]rotaxanes with single and double sites of recognition, containing pyridinium ethane units in their linear components. In the first part, one pyridinium ethane axle with a triethylphosphonium group on one end was synthesized and the possibility of its complexation with 24C8 derivatives was investigated. Although [2]pseudorotaxane formation was limited due to the bulk of the PR4+ stopper, [2]rotaxanes were formed utilising 24-crown-8 ether, benzo-24-crown-8 ether and naphtho-24-crown-8 ether. The crystal structure of the [2]rotaxane containing 24C8 was determined. The dynamic "flip-switch" activity of the asymmetric crown ethers was analysed by variable temperature NMR …
Active Suspension Simulation Through Software Interfacing., Joseph Maiorana
Active Suspension Simulation Through Software Interfacing., Joseph Maiorana
Electronic Theses and Dissertations
No abstract provided.
High Precision Theoretical Study Of The Hydrogen Ion., Mark Michael Cassar
High Precision Theoretical Study Of The Hydrogen Ion., Mark Michael Cassar
Electronic Theses and Dissertations
A study of the hydrogen molecule-ion H+2 is presented. The purpose is to show that a carefully modified, doubled basis set in the standard Hylleraas coordinates provides an excellent, yet straightforward, description of this ion without recourse to approximation methods. Three non-linear parameters are used so that distance scales may be set independently for all three radial coordinates r 1, r2 and r12. Vibrational modes are effectively accounted for by including only high powers of the inter-proton coordinate r12. High precision variational calculations are carried out for the 1 1 S ground state, and the first two excited states---2 1S …
Dueling Csp Representations: Local Search In The Primal Versus Dual Constraint Graph., Mingyan Huang
Dueling Csp Representations: Local Search In The Primal Versus Dual Constraint Graph., Mingyan Huang
Electronic Theses and Dissertations
Constraint Satisfaction Problems (CSPs) can be used to represent and solve many problems in Artificial Intelligence and the real world. When solving Constraint Satisfaction Problems, many of the methods developed and studied have focused only on the solution of binary CSPs while a large portion of real life problems are naturally modeled as non-binary CSPs. In this thesis we have designed an empirical study to investigate the behaviour of several local search methods in primal and dual constraint graph representations when solving non-binary CSPs. Local search methods tend to find a solution quickly since they generally give up the guarantee …
Dynamic And Static Analyses Of Continuous Curved Composite Multiple-Box Girder Bridges., Magdy Said Samaan
Dynamic And Static Analyses Of Continuous Curved Composite Multiple-Box Girder Bridges., Magdy Said Samaan
Electronic Theses and Dissertations
Horizontally curved concrete deck on multiple steel box girder bridges is a structurally efficient, economic, and aesthetically pleasing method of supporting curved roadway systems. Modern highway constructions are often in need of bridges with horizontally curved alignments due to the tight geometry restrictions. Continuous curved composite box girder bridges allow for the use of longer spans, thus reducing costs of the substructure. Despite all inherent advantages of continuous curved composite box girder bridges, they do pose challenging problems for engineers in calculating the load distribution due to moving vehicles across the bridges. Curved bridges are subjected to high torsional as …
Hyperfine Structure For The Rydberg States Of Helium-3., Qixue. Wu
Hyperfine Structure For The Rydberg States Of Helium-3., Qixue. Wu
Electronic Theses and Dissertations
A comprehensive study is made of the hyperfine structure of the helium isotope 3He for all states up to n = 10 and L = 7. High precision values of the hyperfine structure parameters CSS', DS, and ESS' are calculated using the doubled-basis-set Hylleraas-type wave functions developed by Drake. In this calculation, the singlet-triplet states mixing, the Breit relativistic, QED and finite nuclear size effects are included. Hyperfine splittings and hyperfine shifts have been calculated by diagonalizing the complete fine and hyperfine interaction matrix. Our results nicely agree with the available experimental ones. One of the applications of the calculated …
Some Studies On The Multi-Mesh Architecture., Nahid Afroz
Some Studies On The Multi-Mesh Architecture., Nahid Afroz
Electronic Theses and Dissertations
In this thesis, we have reported our investigations on interconnection network architectures based on the idea of a recently proposed multi-processor architecture, Multi-Mesh network. This includes the development of a new interconnection architecture, study of its topological properties and a proposal for implementing Multi-Mesh using optical technology. We have presented a new network topology, called the 3D Multi-Mesh (3D MM) that is an extension of the Multi-Mesh architecture [DDS99]. This network consists of n3 three-dimensional meshes (termed as 3D blocks), each having n3 processors, interconnected in a suitable manner so that the resulting topology is 6-regular with n6 processors and …
Lbsim: A Simulation System For Dynamic Load-Balancing Algorithms For Distributed Systems., Zhiying Du
Lbsim: A Simulation System For Dynamic Load-Balancing Algorithms For Distributed Systems., Zhiying Du
Electronic Theses and Dissertations
In a distributed system consisting of autonomous computational units, the total computational power of all the units needs to be utilized efficiently by applying suitable load-balancing policies. For accomplishing the task, a large number of load balancing algorithms have been proposed in the literature. To facilitate the performance study of each of these load-balancing strategies, simulation has been widely used. However comparison of the load balancing algorithms becomes difficult if a different simulator is used for each case. There have been few studies on generalized simulation of load-balancing algorithms in distributed systems. Most of the simulation systems address the experiments …
Mercury Air Surface Exchange Flux: A Field Study In The Bay Saint-Francois Wetlands, Quebec, Canada., Hong Zhang
Mercury Air Surface Exchange Flux: A Field Study In The Bay Saint-Francois Wetlands, Quebec, Canada., Hong Zhang
Electronic Theses and Dissertations
Mercury (Hg) is a highly mobile environmental pollutant that is toxic to both human and wildlife at extremely low concentration. Aquatic ecosystem and especially wetlands are important environments for Hg biochemical transformation and cycling. An intensive two-part field study was conducted in the Bay Saint-Francois (BSF) wetlands (Quebec, Canada) from May to September 2003. The first part of the study was about atmospheric Hg exchange fluxes with water, soil and vegetation on water. Mercury air-surface exchanges with these compartments were measured using a dynamic flux chamber coupled with a Tekran RTM analyzer. Mercury flux measured over these components exhibits a …
Evaluation Of A Social Skills Program For Children., Christine R. Drummond
Evaluation Of A Social Skills Program For Children., Christine R. Drummond
Electronic Theses and Dissertations
The purpose of this study was to evaluate the effectiveness of a social skills program designed to improve the behavior, social skills, and coping skills of children with learning disabilities. This type of program could also have potential benefits for children without LD who have social skills deficiencies. The current study focused on the impact of the 10-week Better Emotional and Social Times program delivered through the Windsor-Essex chapter of the Learning Disabilities Association of Ontario for 36 children (28 boys, 8 girls), 8 to 12 years of age, from Southwestern Ontario. These children completed pre- and post-treatment the Social …
Protein Family Classification Using Multiple-Class Neural Networks., Xi Zhang
Protein Family Classification Using Multiple-Class Neural Networks., Xi Zhang
Electronic Theses and Dissertations
The objective of genomic sequence analysis is to retrieve important information from the vast amount of genomic sequence data, such as DNA, RNA and protein sequences. The main task includes the interpretation of the function of DNA sequence on a genomic scale, the comparisons among genomes to gain insight into the universality of biological mechanisms and into the details of gene structure and function, the determination of the structure of all proteins and protein family classification. With its many features and capabilities for recognition, generalization and classification, artificial neural network technology is well suited for sequence analysis. At the state …
Inactivation Of Laccase And Enzymatic Removal Of Phenol From Water., Shovini Dasgupta
Inactivation Of Laccase And Enzymatic Removal Of Phenol From Water., Shovini Dasgupta
Electronic Theses and Dissertations
Laccase, as a developmental preparation from an industrial enzyme producer, catalyzes the oxidation of phenols. The reaction products are insoluble polymers and are readily removed from the solution. Experiments were conducted to evaluate the potential use of laccase in an alternative enzyme based treatment technology to remove parent phenol from buffered distilled water at room temperature. All tests were conducted in continuously stirred batch reactor. pH was optimized. At an optimum condition of pH, effects of substrate concentration, product formation, dissolved oxygen (DO) availability, hydrogen peroxide addition, and aeration on phenol removal were investigated. The turnover capacity of laccase (defined …
Integrated Supply Chain Design Using Multi Criteria Mixed Integer Programming., Ramesh Majety
Integrated Supply Chain Design Using Multi Criteria Mixed Integer Programming., Ramesh Majety
Electronic Theses and Dissertations
This research focuses on following key Supply Chain Design questions: determining supplier selection, production quantities, inventory locations and sizes, transportation option selection and transportation quantity in a multi stage, multi level supply chain. A Novel Integrated Supply Chain Design Framework that integrates Production Costs, Transportation Costs, First Time Quality and Supplier On-Time Delivery criteria has been proposed and implemented. Mixed Integer Linear Programming models were developed and four classes of problems were solved. Real world automotive industry data was used for testing and verifying these models. Key new knowledge, both data dependent and data independent, was gained in the course …
Postmodern Penality? Gps Electronic Monitoring And The New Penology., Ryan S. Cotter
Postmodern Penality? Gps Electronic Monitoring And The New Penology., Ryan S. Cotter
Electronic Theses and Dissertations
Within the latter half of the 20th century, contemporary academics have noted a significant reorientation of criminal justice policy and practice. Explanations for this reorientation have been explained by: the emergence of a postmodern penality (Feeley and Simon, 1992); the limits of the sovereign state and the culture of high crime societies (Garland, 1996, 2000); and the imposition of 'New Right' politics (O'Malley, 1999). This thesis specifically examines Feeley and Simon's proposition that a postmodern penality has emerged. It is argued that rather than a replacement of the old penology with a new penology paradigm, contemporary practices are more characteristic …
Automatic Gridding Of Dna Microarray Images., Vidya Vidyadharan
Automatic Gridding Of Dna Microarray Images., Vidya Vidyadharan
Electronic Theses and Dissertations
Microarray (DNA chip) technology is having a significant impact on genomic studies. Many fields, including drug discovery and toxicological research, will certainly benefit from the use of DNA microarray technology. Microarray analysis is replacing traditional biological assays based on gels, filters and purification columns with small glass chips containing tens of thousands of DNA and protein sequences in agricultural and medical sciences. Microarray functions like biological microprocessors, enabling the rapid and quantitative analysis of gene expression patterns, patient genotypes, drug mechanisms and disease onset and progression on a genomic scale. Image analysis and statistical analysis are two important aspects of …
Rethinking The Revival And Evolution Of The Glengarry Scottish Highland Games: Antimodernism, Commercialization, And Cultural (Re)Production In Rural Eastern Ontario., Courtney W. Mason
Rethinking The Revival And Evolution Of The Glengarry Scottish Highland Games: Antimodernism, Commercialization, And Cultural (Re)Production In Rural Eastern Ontario., Courtney W. Mason
Electronic Theses and Dissertations
In 1784, after a prolonged and weary struggle to settle in North America, almost fifty families established a homogenous Scottish community in what is currently Glengarry County, Ontario. In 1840, the residents of Glengarry County established a Scottish Highland Games, but a lack of commitment and funding led to their discontinuation after only a few years. In 1948, following an absence of almost a century, the Glengarry Scottish Highland Games tradition was revived. This thesis examines the revival and evolution of the Glengarry Highland Games, including commercial, ideological, and cultural impacts. When rethinking the revival of the games in Glengarry, …
Low Power Cmos Analog Multipliers., Zheng Li
Low Power Cmos Analog Multipliers., Zheng Li
Electronic Theses and Dissertations
CMOS analog multiplier is a very important building block and programming element in analog signal processing. Although high-performance multipliers using bipolar transistors have been available for 40 years, CMOS multiplier implementation is still a challenging subject especially for low-power and low-noise circuit design. Since the supply voltage is normally fixed for analog multiplier structures, we use the total current to represent the power dissipation. Our basic idea for low power design of analog multipliers is to fit most of the transistors into the linear region, while at the same time keeping the drain-to-source voltage as low as possible to decease …
Nonlinear Stress Analysis And Design Optimization Of Ultra-High Pressure Composite Vessels., Zonghua Chen
Nonlinear Stress Analysis And Design Optimization Of Ultra-High Pressure Composite Vessels., Zonghua Chen
Electronic Theses and Dissertations
The automotive industry is one area of potential application for filament-wound composite pressure vessels. Emphasis on reducing emissions promotes the use of compressed natural gas (CNG) and also hydrogen fueled vehicles worldwide. Fuel cells in concert with hydrogen gas storage technologies are key requirements. Current ultra-high pressure vessels are low in structural efficiency. Also there exists a fundamental lack of confidence and ability to understand and predict their behaviours. With the complexity of the structure in the dome area and the relatively complicated mechanical properties of composite materials, complete theoretical analyses of ultra-high pressure composite vessels are almost impossible. The …
Evaluation Of Microbial Indicators To Distinguish Sources Of Pollution In Groundwater., Massimiliano Cimenti
Evaluation Of Microbial Indicators To Distinguish Sources Of Pollution In Groundwater., Massimiliano Cimenti
Electronic Theses and Dissertations
In this study three different Microbial Source Tracking methods (MST) have been evaluated in laboratory experiments with the objective of determining which is more effective and reliable in distinguishing between human and animal sources of fecal contamination in groundwater. A preliminary literature review of all the MST methods applicable for surface and ground water has been done, and the use of microbiological indicators has been selected. The methods selected involved the enumeration of Fecal Coliforms (FC), Fecal Streptococci (FS), Clostridium perfringens (CP) and Human Bifidobacteria (SFB), parameters which are generally defined as Bacterial Indicators (BI). The first method consisted of …
Design Of Micro Carrier Assisted Coagulation Flocculation Process For The Treatment Of Windsor Csos., Wangbing Zhu
Design Of Micro Carrier Assisted Coagulation Flocculation Process For The Treatment Of Windsor Csos., Wangbing Zhu
Electronic Theses and Dissertations
The present study designed a coagulation-flocculation process for the treatment of wet weather flows and combined sewer overflows using a modified jar test and examined the effect of addition of micro carrier (MC) on the designed process performance. Aluminum sulfate was selected as the primary coagulant and an anionic polymer was used as a coagulant aid. Bench-scale studies revealed that rapid mixing with alum for at least 30 sec at a G value of 246 s-1 in the polymer-aided system followed by slow mixing for 1 min at a G value of 62 s-1 was adequate and effective for the …
Titanium Phosphinimide Complexes For Ethylene Polymerization Catalysis: Synthetic, Computational And Polymerization Testing Investigations., Chad Lee Beddie
Titanium Phosphinimide Complexes For Ethylene Polymerization Catalysis: Synthetic, Computational And Polymerization Testing Investigations., Chad Lee Beddie
Electronic Theses and Dissertations
The influences of the steric and electronic properties of phosphinimide ligands on the ethylene polymerization activity of cyclopentadienyl titanium phosphinimide complexes have been investigated. These efforts resulted in a new family of very high activity ethylene polymerization catalysts and have defined the principles required for future improvements in related catalyst systems. A reliable polymerization testing method that allows control of variables which affect polymerization activity has been established. For example, a series of experiments employing the Cp*TiMe2[NP(N(Et)(Ph)) 3]/B(C6F5)3 catalyst system resulted in polymerization activities ranging from 0 to 5500 g mmol-1 hr-1 atm-1, thus illustrating the sensitivity of the catalyst …
University Students' Preferences And Self-Assessed Abilities For Policing Behaviours: Recruiting And Selecting Suitable Individuals For Modern Policing, Christopher H. Heikoop
University Students' Preferences And Self-Assessed Abilities For Policing Behaviours: Recruiting And Selecting Suitable Individuals For Modern Policing, Christopher H. Heikoop
Electronic Theses and Dissertations
The present study was designed to determine if university students' preferences for community policing (CP) and traditional law enforcement policing (LEP) activities, and their self-reported abilities associated with these activities, are predictive of their attitudes toward and preference for the CP and LEP models. Preferences for activities and self-reported abilities were factor analyzed yielding four interpretable factors for both the activities and abilities questionnaires. These were analyzed with one-way ANOVAs and correlations with participants' ratings of the models. It was found that students who expressed an interest in a policing career at the onset of the study displayed a greater …
Using Imagery To Predict Self-Confidence And Anxiety In Young Elite Athletes, Leisha Strachan
Using Imagery To Predict Self-Confidence And Anxiety In Young Elite Athletes, Leisha Strachan
Electronic Theses and Dissertations
As elite sport participation by children is growing (Smoll & Smith, 1996), it is important to study the psychological development of these athletes. Imagery is one strategy that may be used by young athletes in controlling arousal levels in competition (Weiss, 1991). Although there has been a great deal of research examining the use of imagery by adult athletes (Hall, 2001), there have been fewer studies investigating how imagery is related to competitive anxiety and self-confidence in young elite athletes (c.f, Vadocz et al., 1997). The purpose of this study was to examine how much imagery use predicts self-confidence and …
Characterization Of Mammalian Wdr1 During Dynamic Actin Rearrangement Events., Tenley E. Noone
Characterization Of Mammalian Wdr1 During Dynamic Actin Rearrangement Events., Tenley E. Noone
Electronic Theses and Dissertations
The actin cytoskeleton functions within processes such as cell extension, migration, and neurogenesis; yet the mechanisms of actin regulation are not completely understood. WD repeat proteins (WDR1) have recently been shown to interact with actin and regulate cortical actin dynamics through interactions with cofilin in a number of species. However studies on mammalian WDR1 have not been reported. Further studies in chick systems have also indicated several cofilin-independent functions of WDR1 within cytokinesis and cell migration. We investigated the human homologue of yeast WDR1 and identified the expression of two isoforms, a full length 60 kDa protein and an N-terminal …
Combining Virtual Simulation And Physical Vehicle Test Data To Optimize Automotive Durability Testing., William B. Ferry
Combining Virtual Simulation And Physical Vehicle Test Data To Optimize Automotive Durability Testing., William B. Ferry
Electronic Theses and Dissertations
This thesis describes a project to model a vehicle on a computer with a multibody dynamics simulation software package and to combine that work with physical laboratory tests for the purposes of optimizing durability testing. The intention was to mirror as closely as possible the behavior of a physical vehicle on a road test simulator to assist in determining its durability characteristics under varying road conditions. This modeling work is important because, if done with sufficient fidelity, it can be used to assess vehicle responses using different suspension configurations or payloads. Also, problems associated with changes to a vehicle's payload, …
Solution Treatment Of Vacuum High Pressure Die Cast Aluminum Alloy A380., Yufu Wang
Solution Treatment Of Vacuum High Pressure Die Cast Aluminum Alloy A380., Yufu Wang
Electronic Theses and Dissertations
High pressure die castings usually contain gas porosity mainly due to the entrapment of air or gas during melting due to very high speed injection of the molten metal into the cavity. Vacuum high pressure die casting technology has been proven to be an effective way of reducing gas porosity and pore sizes in castings. As a result, density and mechanical properties, particularly tensile strength and ductility, were improved markedly, and also make castings heat treatable. An investigation on the effect of solution heat treatment in high pressure vacuum die casting A380 alloy has been carried out using methods of …