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The Contribution Of Rigid And Wobbling Masses Of The Leg To Tibial Response Parameters Following Heel Impact., Jeffrey David. Holmes
The Contribution Of Rigid And Wobbling Masses Of The Leg To Tibial Response Parameters Following Heel Impact., Jeffrey David. Holmes
Electronic Theses and Dissertations
The purpose of this study was to determine the contribution of the leg tissue masses (bone mineral content (BMC), fat mass (FM), lean mass (LM), and wobbling mass (WM)), and muscle activation levels to the response of the tibia following heel impacts similar to those experienced during running. A human pendulum was used to deliver controlled impacts to the dominant foot of 20 males and 20 females (mean age 23.8 +/- 2.6 years, body mass 71.8 +/- 16.9 kg, and height 1.7 +/- 0.1 m). Individual tissue masses were determined through use of anthropometric prediction equations. External impact forces, tibial …
Two-Dimensional Measurements Of Dynamic Cumulative Spine Loading In Real-Time., Michael James. Agnew
Two-Dimensional Measurements Of Dynamic Cumulative Spine Loading In Real-Time., Michael James. Agnew
Electronic Theses and Dissertations
The purpose of this study was to develop a real time method for documenting the cumulative low back loads present in lifting tasks using a simplified regression based biomechanical model. Following model development, custom software was created and used with an electromagnetic tracking device (Fastrak(TM)) to calculate cumulative loads in real-time. Estimates obtained from the real-time method (cumulative joint compression, anterior joint shear, posterior joint shear) were compared to estimates from a dynamic link segment biomechanical model (GOBER). Estimates obtained by the real-time method were statistically different than the dynamic biomechanical model in estimates of cumulative compression and cumulative anterior …
User Authentication In Distributed Computing Using Proactive Two-Party Signatures., Arshad Ahmed. Shaikh
User Authentication In Distributed Computing Using Proactive Two-Party Signatures., Arshad Ahmed. Shaikh
Electronic Theses and Dissertations
To address the challenges of user authentication in distributed systems, many protocols have been proposed. Among them is the Proactive Two-party Signatures Scheme (P2SS). P2SS has not so far been investigated in detail. Using P2SS, I have developed a system, called Proactive User-authentication in a Distributed Environment (PUDE) in which two parties (the client and server) use a 2-part signature algorithm, based on standard (one part) RSA algorithm. In this scheme the client and the server jointly produce the signatures. If the password of the user is compromised, the system can recover by changing the share of the private key …
Variation Of Bloom Filters Applied In Distributed Query Optimization., Yue (Amber). Zhang
Variation Of Bloom Filters Applied In Distributed Query Optimization., Yue (Amber). Zhang
Electronic Theses and Dissertations
Distributed query processing is important for Distributed Database Systems. Through the past years, the research focus in distributed query processing has been on how to realize join operations with different operators such as semi-join and Bloom Filter. Experiments show that using bloom filters, the hash-semijoin, almost always does better than semi-join for the query processing. However as long as you use bloom filter, you cannot avoid collisions. So in order to get the cheaper processing, some of the past work uses two or more bloom filters to do the hash-semijoin. However several factors still affect the cost and optimization result. …
A Hybrid Load Balancing Algorithm For Coarse-Grained Applications., Xinyu. Gan
A Hybrid Load Balancing Algorithm For Coarse-Grained Applications., Xinyu. Gan
Electronic Theses and Dissertations
A non-preemptive hybrid load balancing algorithm is proposed for heterogeneous distributed computing environment, since no single load balancing algorithm works well for all kinds of applications and environments. The agents' computing capabilities may also change during runtime because of the background load. This algorithm makes use of the idea of several sub-algorithms. The hybrid model initially classifies the computers and jobs into different groups. Two priority queues are maintained at each worker to record the processes' estimated computing time and the real time. Based on historical experiences, a centralized scheduler can dynamically change the parameters in order to improve the …
Relative Stability Of The Neuropsychological Profiles Of Non-Verbal Learning Disabilities (Nvld) And Basic Phonological Processing Disabilities (Bppd) From Middle Childhood To Early Adolescence., Nikhil S. Koushik
Electronic Theses and Dissertations
The present study is a longitudinal comparison of relative neuropsychological assets and deficits for young and older children with Nonverbal Learning Disabilities (NLD) and Basic Phonological Processing Disabilities (BPPD). The sample for the investigation was comprised of clinic-referred children who had been diagnosed with either NLD or BPPD by an experienced clinical neuropsychologist. A total of 18 children, nine in each of the NLD and BPPD groups were selected. The children were between 7 and 8 years of age at first testing, and 9 and 14 years of age at second testing, inclusive. The NLD and BPPD groups were compared …
Salary Determination In The National Hockey League: The Development Of An Equitable Player Compensation Model., Jess Charles. Dixon
Salary Determination In The National Hockey League: The Development Of An Equitable Player Compensation Model., Jess Charles. Dixon
Electronic Theses and Dissertations
Nowhere else in North America is the performance of an employee so readily visible and so easily measured than in the sport of professional ice hockey (Banister, 1997). "Although the performance of professional athletes may be objectively measured and compared by the vast quantities of statistics compiled by sports analysts, controversy still surrounds whether their individual efforts justify their salaries" (Banister, 1997, p. 47). NHL salaries have become so disparate in recent years that it is quite common for certain 'marquee' players to earn 10--20 times the salary of other players competing on the same team (Banister, 1997). With 50% …
Submergence Effects On Local Scour., Md Rajib. Ahsan
Submergence Effects On Local Scour., Md Rajib. Ahsan
Electronic Theses and Dissertations
The study discussed herein focuses on the local scour created in a cohesionless sand bed by a plane turbulent wall jet with varying levels of submergence from 1 to 20. From the observations of 40 experiments the study reveals that the formation of unstable scour processes, which can be short and long-term in nature, depends on the water depth available above the mound apex for a given initial jet velocity. In case of stable scour process, the growth of the scour hole dimensions follows a linear relation with the logarithm of time beyond which the rate of change in the …
Surface-Enhanced Vibrational Spectroscopy Of Diphenyl Sulfide And Diphenyl Disulfide On Films And Colloids, And The Single-Molecule Detection Of Perylene Dye On Silver And Gold Colloids., Ben Issa M. Ali. Tolaieb
Surface-Enhanced Vibrational Spectroscopy Of Diphenyl Sulfide And Diphenyl Disulfide On Films And Colloids, And The Single-Molecule Detection Of Perylene Dye On Silver And Gold Colloids., Ben Issa M. Ali. Tolaieb
Electronic Theses and Dissertations
In this work, colloidal particles of gold and silver are used as enhancing substrates to study behavior of organic sulfides and a perylene derivative butylimido, butyleneamine perylene (nBu-PTCDA-(CH2) 4-NH2) adsorbed on metal particles using surface-enhanced resonance Raman scattering (SERRS) or SERS. In addition, the SERS spectra of the adsorbed species formed by diphenyl disulfide and diphenyl sulfide (DPDS, DPS) on evaporated silver and gold island thin films were obtained. The SERS vibrational spectra of both DPDS and DPS are discussed and the vibrational assignments of the fundamental modes were aided with an ab-initio calculations using Density Functional Theory (DFT) at …
Syntheses And Applications Of Group Vi And Viii-X Heterocyclic-Phosphinimine Complexes., Liam P. Spencer
Syntheses And Applications Of Group Vi And Viii-X Heterocyclic-Phosphinimine Complexes., Liam P. Spencer
Electronic Theses and Dissertations
A class of phosphinimine-based group VI and VIII-X late transition metal (LTM) complexes has been synthesized and evaluated for olefin polymerisation activity. The phosphinimine ligand has been designed to incorporate an imine moiety; a functional group which has been successfully applied in very active LTM olefin catalytic systems. Heterocycles, such as pyridine and imidazole are used to accomplish the integration of an imine group into the ligand. Phosphines employing the heterocyclic group are oxidized by phenyl azides in excellent yields to form phosphinimine ligands. These phosphinimine ligands react with several LTM's, the complexes of which are identified by single crystal …
An Investigation Of How Learning Occurs In An Organization., Lisa. Kolody
An Investigation Of How Learning Occurs In An Organization., Lisa. Kolody
Electronic Theses and Dissertations
As people working in organizations struggle with the implications of constant change the importance of learning, for the people and the organizations, is gaining prominence. As the significance of learning, knowledge acquisition and the sharing of knowledge and information grow it becomes necessary to incorporate these concepts into organizational processes and structures. This study was a case study of how learning occurs in an organization according to the model of a Learning Organization by Senge (1990). The research tool was developed by the investigator to elicit the opinions and experiences of learning in the organization according to the five disciplines …
An Object-Oriented Analysis Technique For Developing Object-Oriented Simulations In Silk., Lia. Zannier
An Object-Oriented Analysis Technique For Developing Object-Oriented Simulations In Silk., Lia. Zannier
Electronic Theses and Dissertations
Simulation is very popular as an analysis tool for complex systems. A new paradigm shift towards object oriented simulations is hoping to make simulations even more powerful and accessible. However, in order for those not familiar with object oriented techniques to join this shift, methods must be developed for them to build object oriented simulations, until they acquire an understanding of this programming paradigm. This is an attempt to develop a procedure for just such novice model builders. This thesis begins with some background on object oriented paradigm concepts. It then provides an overview of several different object oriented analysis …
Bottleneck Bandwidth Measurement Using Path Algorithm., Jun. Wei
Bottleneck Bandwidth Measurement Using Path Algorithm., Jun. Wei
Electronic Theses and Dissertations
Network bandwidth is an important resource in the Internet. As greater numbers of people and companies implement their businesses using the Internet, the measurement of network bandwidth, especially the bottleneck-link bandwidth, becomes a critical and challenging issue. To improve the practicability, accuracy and performance of existing network-bandwidth measurement algorithms, such as PathChar, Bprobe and Cartouche algorithm, we have developed a new method: PATH (PAcket-Train with Header) algorithm. PATH is the combination of single-packet and packet-pair algorithms. It is a sender-based algorithm that is straightforward to implement in the Internet. To verify and improve upon the PATH algorithm, we have developed …
Computing The Minimum Perimeter Triangle Enclosing A Convex Polygon: Theory And Implementation., Anna Valentinovna. Medvedeva
Computing The Minimum Perimeter Triangle Enclosing A Convex Polygon: Theory And Implementation., Anna Valentinovna. Medvedeva
Electronic Theses and Dissertations
Geometric optimization, an important field of computational geometry, finds the best possible solution to a computational problem that involves geometric objects. An attractive fundamental problem in this area is one of approximating a convex n-gon with a simpler convex k-gon, where k < n, and the area or the perimeter of the approximate object is minimized. This problem arises in a wide range of applications, such as geographic information systems (GIS), spatial databases, pattern recognition, and computer graphics, to name but a few. The approximation of convex polygons with their respective enclosing triangles is a particularly interesting problem; however, finding an optimal linear time solution for computing the minimum perimeter triangle enclosing a convex polygon was a long-standing open problem, which turned out to be more difficult than determining an enclosing triangle of minimal area. In this thesis, we suggest some theoretical and practical justifications for the linear time complexity of a recently proposed optimal solution and provide an efficient and robust implementation of that solution. (Abstract shortened by UMI.) Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis2003 .M43. Source: Masters Abstracts International, Volume: 42-02, page: 0618. Adviser: Asish Mukhopadhyay. Thesis (M.Sc.)--University of Windsor (Canada), 2003.
An Empirically Derived Typology Of Behaviour Problems Based On Parent Ratings Of Preschool Children., Mohsan R. Beg
An Empirically Derived Typology Of Behaviour Problems Based On Parent Ratings Of Preschool Children., Mohsan R. Beg
Electronic Theses and Dissertations
The purpose of the current study was to build upon prior efforts to produce a meaningful typology of preschool children's behaviour problems. Distinct empirically-derived subtypes were identified through the use of cluster analytic techniques and the reliability and validity of generated subtypes was tested. Archival data were collected on a sample of 268 children, aged 2 1/2 to 5-years old, who were referred for an initial screening to determine their suitability for an Assessment/Day treatment program within a preschool children's mental health centre. Parents of the referred children had completed the Parent Rating Scales for Preschool Children from the Behavior …
The Underlining Test: An Exploration Of Its Construct Dimensions In A Clinic-Referred Sample., Brent Albert. Hayman-Abello
The Underlining Test: An Exploration Of Its Construct Dimensions In A Clinic-Referred Sample., Brent Albert. Hayman-Abello
Electronic Theses and Dissertations
The present study examined the number and nature of factors underlying performance on The Underlining Test (UT), a set of 14 speeded cancellation tasks (subtests) containing letters, digits or shapes, separately or in strings. Using data from a large (n = 844) heterogeneous sample of clinic-referred children, several hypothesized models containing one to four latent constructs were examined using confirmatory factor analysis. A four-factor model had the best fit to the data, and based on the nature of the subtests associated with each construct they were labeled Individual Item Search, Reading-Related, Sequencing, and Complex Visual Analysis. Composite scores were calculated …
Parallel Stochastic Context-Free Grammar Training For Trna Secondary Structure Prediction., Kaiyuan. Shi
Parallel Stochastic Context-Free Grammar Training For Trna Secondary Structure Prediction., Kaiyuan. Shi
Electronic Theses and Dissertations
In this thesis, parallel computing methods are used to construct a stochastic context-free grammar for analyzing the secondary structure of tRNA molecules. Stochastic context-free grammars are basically probabilistic languages that parse a sequence/molecule and output its probability of whether or not it belongs to the sequence family modeled by the grammar and at the same time predict the molecule's secondary structure. Stochastic context-free grammars can be converted from corresponding context-free grammars, by assigning probabilities to the grammar's production rules. The use of stochastic context-free grammars to analyze the secondary structure of RNA molecules was limited due to time and space …
Plastic Liberation Through The Comminution Of Composite Manufactured Product Wastes, Lawrence Jekel
Plastic Liberation Through The Comminution Of Composite Manufactured Product Wastes, Lawrence Jekel
Electronic Theses and Dissertations
The automotive industry is examining alternative designs of systems and components that facilitate material recovery during the processing of end-of-life vehicles. Specifically, if materials or components can be designed to separate preferentially, then material recovery from product waste will be enhanced. Two waste concepts were examined for their practical value: (1) size distribution and the related Pi Breakage theory; and (2) the liberation of materials. Samples consisting of ABS and PVC were assembled with a variety of geometries, characteristic lengths, subcomponent configurations and fastening methods. A detailed evaluation of thermoplastic comminution found that particle size distributions fit the Gaudin size …
The Difference In Vocabulary Acquisition For Grade One Students Using Shared Reading Or Guided Reading., Brenda Jean. Plowman
The Difference In Vocabulary Acquisition For Grade One Students Using Shared Reading Or Guided Reading., Brenda Jean. Plowman
Electronic Theses and Dissertations
This study examined two different reading methods used in the Ontario public elementary system, shared and guided reading, and their possible effects on students' vocabulary acquisition. Both methods of instruction are supported by the Ministry of Education and are required teaching by primary educators within the Greater Essex County District School Board. The sample consisted of 47 grade one children aged 6 to 7 years of age. All of the subjects attended an Essex County public school. The children were pretested and post tested by the researcher using the same instrument to determine whether an increase in vocabulary acquisition had …
The Effect Of Localized Muscle Fatigue On Tibial Impact Acceleration., Janice Marie. Flynn
The Effect Of Localized Muscle Fatigue On Tibial Impact Acceleration., Janice Marie. Flynn
Electronic Theses and Dissertations
Tibial impact acceleration measured during running is known to increase with general body fatigue. The purpose of this study was to determine if localized muscle fatigue of the shank muscles would also cause an increase in peak tibial acceleration. The human pendulum system was used to control impact velocity and joint angle. There were 24 women participating in the study: 12 between the ages of 20--25, and 12 between 50--60 years. Each lay supine on the pendulum, and their unshod dominant heel was impacted into a vertical force plate with a velocity between 1--1.15 m/s, and a force approximating 1.8--2.8 …
The Effects Of Gender And Marital Status On Simulated Hiring Decisions., Simone (Maheu). Arbour
The Effects Of Gender And Marital Status On Simulated Hiring Decisions., Simone (Maheu). Arbour
Electronic Theses and Dissertations
Masters in Business Administration (MBA) and upper-year business students (N = 89) evaluated applications for an upper-level management position. A 2 x 2 (applicant gender X marital status) between subjects design was used to examine the effects of the independent variables on a variety of work-related dimensions. Rather than having an overall consistent effect on the participants' evaluations of the applicants, gender and marital status affected distinct work-related variables. Gender influenced measures of work habits (favoring females over males) while marital status influenced measures of emotional stability (favoring married applicants over single applicants) and organizational commitment (favoring single applicants over …
The Effects Of Trunk Muscle Fatigue And Load Timing On Spine Mechanics During Sudden Hand Loading., Diane Eva. Grondin
The Effects Of Trunk Muscle Fatigue And Load Timing On Spine Mechanics During Sudden Hand Loading., Diane Eva. Grondin
Electronic Theses and Dissertations
Sudden loading of the trunk, especially when it is unexpected, leads to higher muscle forces. Muscle fatigue, on the other hand, decreases the force producing capacity of muscles. The current experiment provides insight into the control of spine mechanics during trunk muscle fatigue in a situation of sudden loading that affects spinal stability. Fifteen females received a sudden load in the hands, at a time that could be anticipated and at a time that could not. Participants received these loading trials (a) while rested, (b) with back muscle fatigue, and (c) with a combination of back and abdominal muscle fatigue. …
Constructing Victims: The Gendering Of Domestic Violence In The Print Media., Kameron Morgana Eve. Perchaluk (Nee Robinson)
Constructing Victims: The Gendering Of Domestic Violence In The Print Media., Kameron Morgana Eve. Perchaluk (Nee Robinson)
Electronic Theses and Dissertations
The purpose of this project is to explore gender constructions of domestic violence in Ontario newsprint media in the decade of the 1990s, and to examine the extent to which the victimization of male partners by female partners is under-represented during this time period, rendering male victims "invisible". Based on content analysis of articles from the Toronto Star and the Toronto Sun, this thesis argues that social constructions of gender shape portrayals of domestic violence victimization in the print media. The thesis finds no support in the data, however, for the hypothesis that the print media under-represents male domestic violence …
Enhanced Pl-Wap Tree Method For Incremental Mining Of Sequential Patterns., Min Chen
Enhanced Pl-Wap Tree Method For Incremental Mining Of Sequential Patterns., Min Chen
Electronic Theses and Dissertations
Sequential mining as web usage mining has been used in improving web site design, increasing volume of e-business and providing marketing decision support. This thesis proposes PL4UP and EPL4UP algorithms which use the PLWAP tree structure to incrementally update sequential patterns. PL4UP does not scan old DB except when previous small 1-itemsets become large in updated database during which time its scans only all transactions in the old database that contain any small itemsets. EPL4UP rebuilds the old PLWAP tree using only the list of previous small itemsets once rather than scanning the entire old database twice like original PLWAP. …
Theoretical Perspective On Mutliple Risk Behaviour: The Influence Of Social Capital On Substance Use And Sexual-Risk Taking Among Young Men And Women., Sheri-Lynn. Medaglia
Theoretical Perspective On Mutliple Risk Behaviour: The Influence Of Social Capital On Substance Use And Sexual-Risk Taking Among Young Men And Women., Sheri-Lynn. Medaglia
Electronic Theses and Dissertations
The purpose of this research is to examine the effect of social capital on adolescent binge drinking, smoking and sexual behaviour, focusing specifically on the conceptualizations of social capital promulgated by three prominent theorists: Pierre Bourdieu, James Coleman and Robert Putnam. The data used for this study is a sub-sample extracted from Statistic Canada's 1996--1997 National Population Health Survey. The sample for the present study comprises 2159 male respondents and 2019 female respondents between the ages of 15 and 19 years. The methods of analysis include ordinary least squares and logistic regressions. Risk behaviours were tested separately and in a …
A 2-Digit Multidimensional Logarithmic Number System Filterbank Processor For A Digital Hearing Aid., Hongbo (Jennifer). Li
A 2-Digit Multidimensional Logarithmic Number System Filterbank Processor For A Digital Hearing Aid., Hongbo (Jennifer). Li
Electronic Theses and Dissertations
This thesis addresses the design, implementation, and evaluation of a filterbank for digital hearing aids using a Multidimensional Logarithmic Number System (MDLNS). Hearing loss is a function of both frequency and input level. In a typical digital hearing instrument, the hearing loss compensation is performed by separating the incoming sound into several frequency bands which are then compressed to allow the amplification of low level signals while maintaining the amplitude of high level signals. The demands of low power consumption and small size have led to a number of advances in algorithms, semiconductor technologies and system architectures for completely-in-canal (CIC) …
A Biomechanical Model Of The Spine To Predict Trunk Muscle Forces: Optimizing The Relationship Between Spinal Stability And Spinal Loading., Stephen Hadley Morgan Brown
A Biomechanical Model Of The Spine To Predict Trunk Muscle Forces: Optimizing The Relationship Between Spinal Stability And Spinal Loading., Stephen Hadley Morgan Brown
Electronic Theses and Dissertations
The purpose of this study was to develop an optimization model of the spine that, incorporating a measure of spinal stability as a constraint, allowed for realistic predictions of trunk muscle and spine compression forces. A 3-dimensional, 52 muscle, single joint model of the lumbar spine was developed and tested in situations of pure trunk flexor and lateral bend moments. Spinal stability, about each anatomical axis, was calculated at the L4/L5 spinal joint. Estimates of the optimal level of spinal stability, in a given loading situation, obtained through the use of regression equations developed from experimental findings, were utilized as …
Authorization-Enhanced Security Framework For Ogsa Support., Haiyan. Cheng
Authorization-Enhanced Security Framework For Ogsa Support., Haiyan. Cheng
Electronic Theses and Dissertations
Security plays an important role for a large distributed system in an open community. Without enough knowledge about the user, it is hard to make access decision to the local resources. Current Public Key Infrastructure (PKI) uses a trusted third party, called Certificate Authority (CA), to check the identity of the users. The assumption of PKI is that every entity trusts CA absolutely and equally. This is also a weakness of PKI. The security problem in a Single-Sign-On (SSO) environment is more difficult to manage. Most of the current SSO security approach relies heavily on the pre-established trust relationship. This …
Characterization Of A Novel Human Cap2 Interacting Protein: Neuronal Calcium Binding Protein 1 (Necab1)., Emilio P. Mottillo
Characterization Of A Novel Human Cap2 Interacting Protein: Neuronal Calcium Binding Protein 1 (Necab1)., Emilio P. Mottillo
Electronic Theses and Dissertations
The actin cytoskeleton is implicated in numerous processes such as cellular division, migration, endocytosislexocytosis, and more recently synaptic plasticity. Important players in controlling cytoskeletal rearrangements are the Cyclase Associated Proteins (CAPs) which are thought to link cell signalling to the dynamics of the actin cytoskeleton, via sequestration of monomeric actin subunits. CAPs are conserved throughout evolution and possess conserved functional domains. Previous studies have suggested a link between CAP proteins and vesicle trafficking and this study focussed on characterizing binding partners of human CAPs. Using a two hybrid screen of a human adult brain cDNA library, a novel human CAP …
Combustion Of Propane-Air Mixtures With Oxygenated Additives In A Closed Duct And An Si Engine., Stephen W. Mckellar
Combustion Of Propane-Air Mixtures With Oxygenated Additives In A Closed Duct And An Si Engine., Stephen W. Mckellar
Electronic Theses and Dissertations
This master's thesis outlines the project investigating the effects of oxygenated fuel additives on flame propagation and engine performance. In the first of this two-part investigation, flame speeds, in a straight duct with a curved end section, were examined. The 172 cm straight section was followed by a 90° bend section and a 30 cm straight section. With propane as the fuel and emission zero air as the oxidizer, flame speeds, using equivalence ratios of 0.8, 1.0, and 1.1, were explored. In addition, a commercial propane fuel additive blend was introduced and its flame speed compared to instrument grade propane. …