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Formation Of Flexible Manufacturing Cells With Human Lifting Consideration., Setiadi. Lesmana Jan 2003

Formation Of Flexible Manufacturing Cells With Human Lifting Consideration., Setiadi. Lesmana

Electronic Theses and Dissertations

Manufacturing companies are being forced to design and organize their manufacturing operations to survive the competition and to satisfy the customers' needs. Cellular Manufacturing Systems (CMS) have been considered as an important step in achieving these objectives. In this research, mixed integer programming models are developed. The objective of the models is to minimize the total cost function associated with the formation of the manufacturing cells, while considering the human limitation of manual lifting tasks. In addition, the multi period models consider machine relocation and/or manpower level change to balance machine and operator workload throughout the production periods. The ...


Viscometric Properties Of Lubricating Oils In The Presence Of Pour-Point Depressants And Viscosity-Index Improvers At Different Temperature Levels., Sheila. Kashkooli Jan 2003

Viscometric Properties Of Lubricating Oils In The Presence Of Pour-Point Depressants And Viscosity-Index Improvers At Different Temperature Levels., Sheila. Kashkooli

Electronic Theses and Dissertations

The objective of this work is to study the effect of polymeric additives upon the viscosity of two different base stocks over the temperature range -25°C to 10°C. The two base stocks being, (i) Imperial oil's MXT-5 base stock, and (ii) Chevron oil's Group III base stock. Four different viscosity-index improvers at five concentrations were employed. The viscosity-index improvers' behavior was studied in presence of pour-point depressants. The viscosity-index improvers being: hydrogenated diene copolymer (HDP) [C95-209], dispersant olefin copolymer (DOCP) [C96-309], olefin copolymer (OCP) [C98-129], polymethylacrylate (PMA) [C93-009]. The pour-point depressants are: acryloid 154-70 and paraflow ...


The Effects Of Trunk Muscle Fatigue And Load Timing On Spine Mechanics During Sudden Hand Loading., Diane Eva. Grondin Jan 2003

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 ...


Rorschach And Mmpi-2 Construct Specific Convergence: Disentangling The Roles Of Response Style And General Psychopathology, Marc F. Carriere Jan 2003

Rorschach And Mmpi-2 Construct Specific Convergence: Disentangling The Roles Of Response Style And General Psychopathology, Marc F. Carriere

Electronic Theses and Dissertations

Although the MMPI-2 and Rorschach are commonly used and researched tests, studies examining the convergence of similarly named constructs (e.g., depression) have typically found that the tests are unrelated (Archer & Krishnamurthy, 1997). Meyer (1997, 1999) and Meyer, Riethmiller, Brooks, Benoit, and Handler (2000) established that choosing participants who respond to the Rorschach and the MMPI-2 in a similar way based on their placement on the first unrotated principal component (FUPC) moderates convergence between similarly named constructs (e.g., depression). However, it has been unclear as to whether these results were due to specific construct convergence or whether they were ...


Authorization-Enhanced Security Framework For Ogsa Support., Haiyan. Cheng Jan 2003

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 ...


User Authentication In Distributed Computing Using Proactive Two-Party Signatures., Arshad Ahmed. Shaikh Jan 2003

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 ...


A 2-Digit Multidimensional Logarithmic Number System Filterbank Processor For A Digital Hearing Aid., Hongbo (Jennifer). Li Jan 2003

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 ...


Motivational Versus Directive Interventions In The Treatment Of Eating Disorders: Adolescents' Perspectives., Shannon Lorraine. Zaitsoff Jan 2003

Motivational Versus Directive Interventions In The Treatment Of Eating Disorders: Adolescents' Perspectives., Shannon Lorraine. Zaitsoff

Electronic Theses and Dissertations

Few studies have examined readiness and motivation for change in adolescents with eating disorders, or the effectiveness of motivational interventions in this population. Purposes. To examine the perceptions of adolescents' with eating disorders toward written descriptions of motivational and directive interventions in relation to engagement in treatment, and how these perceptions relate to adolescents' own readiness and motivation for change. To explore factors that adolescents with eating disorders identify as important in influencing engagement in therapy. Methods. Thirty-nine female adolescents recruited from eating disorder programs participated in this research. Participants were interviewed using hypothetical vignettes depicting motivational and directive interventions ...


Occupational Health And Safety Standards And The Potential Outcomes Of Privatized Regulation., Liam. Mccarthy Jan 2003

Occupational Health And Safety Standards And The Potential Outcomes Of Privatized Regulation., Liam. Mccarthy

Electronic Theses and Dissertations

This Masters thesis in political science examines the recent introduction of voluntary compliance mechanisms (e.g. third party verification, experience rating, etc.) into the field of occupational health and safety. It analyses these policies from a historic and economic perspective and examines the Canadian experience to predict likely outcomes of these mechanisms. The thesis concludes that these mechanisms have the potential to be complementary mechanisms to government regulation but are unlikely to act as appropriate substitutes for government action. This is due to the inherent failings of the market's ability to regulate occupational health and safety even with its ...


Parallel Stochastic Context-Free Grammar Training For Trna Secondary Structure Prediction., Kaiyuan. Shi Jan 2003

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 ...


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 Jan 2003

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 Jan 2003

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 ...


Self-Control Vs. Social Control As An Explanation For Delinquency., Marcel Joseph. Parent Jan 2003

Self-Control Vs. Social Control As An Explanation For Delinquency., Marcel Joseph. Parent

Electronic Theses and Dissertations

Although Gottfredson and Hirschi's (1990) General Theory of Crime has received much more attention over the last decade than that of Hirschi's (1969) Social Control Theory, it is imperative that the latter theory's contribution not be overlooked. Social Control Theory posits that delinquent acts result when an individuals bond to society is weak or broken. Hirschi proposed that the four elements comprising the social bond are attachment, commitment, involvement and belief. Due to the shortcomings of Social Control Theory's ability to explain delinquency, Gottfredson in collaboration with Hirschi (1990) formulated the General Theory of Crime. At ...


The Construction Of Ecstasy As A Social Problem In Toronto Newspapers (Ontario)., Sean Cristin. Miller Jan 2003

The Construction Of Ecstasy As A Social Problem In Toronto Newspapers (Ontario)., Sean Cristin. Miller

Electronic Theses and Dissertations

Since the early 1990's there has been a considerable amount of attention given to ecstasy and raves in Toronto. This study examines newspaper coverage of ecstasy through a content analysis of all articles about ecstasy appearing in the Toronto Star, Globe and Mail and National Post from 1988 to 2002. Using a "contextual" constructionist perspective, claims-making activities of various individuals and/or groups is examined. Claims are contrasted with "objective evidence" to illustrate their constructed nature. It is concluded that ecstasy use in Toronto is not the "social problem" it is made out to be in newspaper accounts. A ...


The Contribution Of Rigid And Wobbling Masses Of The Leg To Tibial Response Parameters Following Heel Impact., Jeffrey David. Holmes Jan 2003

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 ...


The Effect Of Localized Muscle Fatigue On Tibial Impact Acceleration., Janice Marie. Flynn Jan 2003

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 ...


The Effect Of Turbulence On Forced Convection From A Heated Horizontal Circular Cylinder., Christopher. Sak Jan 2003

The Effect Of Turbulence On Forced Convection From A Heated Horizontal Circular Cylinder., Christopher. Sak

Electronic Theses and Dissertations

The effects of free stream turbulence integral length scale and turbulence intensity (root-mean-square stream-wise component of velocity fluctuation) on the rate of forced convective heat transfer from a heated horizontal circular cylinder in a cross flow of air were investigated experimentally. An internally heated 5.1 cm (2&inches;) diameter aluminium cylinder was placed horizontally in an 86 cm wide by 66 cm high (34&inches; by 26&inches;) wind tunnel. The power supplied by the internally embedded heater was kept constant in order to maintain uniform surface temperature. A perforated plate was placed at the entrance to the test section to generate ...


Phoneme-Based Speech Recognition Using Self-Organizing Map., Xiaofeng. Dong Jan 2003

Phoneme-Based Speech Recognition Using Self-Organizing Map., Xiaofeng. Dong

Electronic Theses and Dissertations

Automatic speech recognition by machine is a challenging task for man-machine communications. Because speech waveform is nonlinear and variant, a speech recognition algorithm requires much intelligence and an ability to accommodate variations. In this thesis, a hybrid speech recognizer based on self-organizing map (SOM) and fuzzy neural network (FNN) is proposed. The SOM is used to obtain the optimal phoneme response patterns of speech signal by Viterbi search algorithm and the FNN is applied for the recognition matching of these 2D speech response patterns on the SOM to fulfill the speech recognition tasks. Experiment results show that this hybrid speech ...


Photoblur (Original Writing, Novel)., John Sigurd. Gudmundson Jan 2003

Photoblur (Original Writing, Novel)., John Sigurd. Gudmundson

Electronic Theses and Dissertations

The idea that context shapes text is traceable to Aristotle who identified poetry or "making" with the form or plot that best appeals to audience expectations. Today's complex world, with its host of competing truths, requires texts that reflect this confusion. My novel reacts to this context, appealing to expectations in both form and story. What are those expectations? The current appetite for shorter texts and the popularity of the short novel might be explained by a growing alliterate population, an educated group who value books, but who have little time to read them. Yet reading hasn't declined ...


Piles Embedded In Soft Clay Located Below The Water Table Subjected To Lateral Cyclic Loadings: Sensitivity Analysis., Deni Gunawan. Priyanto Putro Jan 2003

Piles Embedded In Soft Clay Located Below The Water Table Subjected To Lateral Cyclic Loadings: Sensitivity Analysis., Deni Gunawan. Priyanto Putro

Electronic Theses and Dissertations

This study presents the theoretical formulation and numerical investigations of sensitivity analysis of laterally loaded piles embedded in soft clay located below the water table. Single piles with various lengths and boundaries subjected to cyclic lateral forces and bending moments are analyzed. The groups of 3 x 3 piles with various spacing (2D, 3D, 4D, and 5D) are also analyzed in this study. For single piles, the pile structure is considered as one-dimensional beam and the supporting soft clay is defined by means of p-y model. For groups of piles, the pile members are considered as one-dimensional beams and the ...


Preservice Teacher Beliefs Related To Internet Usage., Salah. Zogheib Jan 2003

Preservice Teacher Beliefs Related To Internet Usage., Salah. Zogheib

Electronic Theses and Dissertations

The study investigated the relationship between preservice teachers' attitudes, achievement-, and value-related motivational beliefs about the Internet and their perceived likelihood to use it in instruction. Attitudes investigated preservice teachers' confidence and liking of the Internet. Achievement-related beliefs were examined within a motivational framework that described preservice teachers' actual knowledge and perceived experience about the Internet. Value-related beliefs were constructed from six measures for which the Internet would be valuable: personal needs, future career goals, a partner, children, future students, and society in general. Likelihood of using the Internet in instruction focused on teaching needs, students' learning, and differential access ...


Quantifying Bacteria-Contaminant Interactions (Bacillus Subtilis)., Lachlan Charles Wandlass. Maclean Jan 2003

Quantifying Bacteria-Contaminant Interactions (Bacillus Subtilis)., Lachlan Charles Wandlass. Maclean

Electronic Theses and Dissertations

Experiments were conducted to probe for the existence of positive sites on the cell wall of the Gram-positive bacterium Bacillus subtilis through a combination of electrophoretic mobility measurements and anion adsorption experiments with iodide. Iodide adsorption onto Bacillus subtilis was measured as a function of pH, ionic strength, solid:solute ratio, and time. The experimental data were interpreted using a surface complexation approach. The I- adsorption data were best fit with a single surface site reaction, with the iodide ion forming a surface complex with the positively-charged amino functional group located on the bacterial cell wall: R-NH3+ + I- ↔ R-NH3-I- (log ...


Strategic Design And Tactical Planning Models For Supply Chain Networks: A Mixed Integer Programming Approach., Navneet Kumar. Vidyarthi Jan 2003

Strategic Design And Tactical Planning Models For Supply Chain Networks: A Mixed Integer Programming Approach., Navneet Kumar. Vidyarthi

Electronic Theses and Dissertations

Supply chain management, propelled by pressures for responsiveness and cost reductions, is now at the center stage of the business performance of several manufacturing and service organizations. One of the biggest challenges faced by these organizations in the chain is the need to respond to frequent and unpredictable changes in the market. In order to respond to these changes effectively, the organization needs to focus its efforts on design and operation of efficient and effective supply chain networks. In this thesis, a strategic level design model has been developed to determine the configuration of the supply chain network---number, location and ...


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 Jan 2003

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 ...


The Effects Of Gender And Marital Status On Simulated Hiring Decisions., Simone (Maheu). Arbour Jan 2003

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 married ...


High-Performance Mortar Reinforced With Short Carbon Fibers., Md. Safiuddin Jan 2003

High-Performance Mortar Reinforced With Short Carbon Fibers., Md. Safiuddin

Electronic Theses and Dissertations

The aim of the work reported in this thesis was to evaluate the performance of carbon fiber reinforced mortar in respect of workability, strength, impact resistance, toughness, durability, and cost-effectiveness. Laboratory experiments were carried out to investigate the properties of both fresh and hardened mortars reinforced with short carbon fibers and to optimize the mix with sufficient workability, good strength, superior impact resistance, enhanced toughness, and excellent durability at reasonable cost. Experimental investigation was carried out at the Concrete Laboratory of the University of Windsor. Five different types of mortar were taken under study including the control mortar based on ...


Electrochemistry And Spectroscopy Of Energy Conversion And Polynuclear Aromatic Materials., Maryam. Nazri Jan 2003

Electrochemistry And Spectroscopy Of Energy Conversion And Polynuclear Aromatic Materials., Maryam. Nazri

Electronic Theses and Dissertations

The field of materials chemistry is becoming increasingly important in many technological disciplines, including batteries, fuel cells, hydrogen storage materials, and application of poly-nuclear aromatic compounds in solar cells, color copiers, sensors, and catalysis. This multidisciplinary research work focuses on the development, understanding, and characterization of novel materials for advanced lithium batteries and a unique series of polyaromatic compounds for application in solar cells and color copiers. A general overview of materials and techniques used in this work is presented, including the electrochemistry, spectroscopy, thermal analysis, and x-ray diffraction. A unique electrochemical procedure based on carbon paste microelectrode was applied ...


Electron Collision Studies Of Cesium Using A Magneto-Optical Trap., John Alexander. Macaskill Jan 2003

Electron Collision Studies Of Cesium Using A Magneto-Optical Trap., John Alexander. Macaskill

Electronic Theses and Dissertations

Experiments involving a magneto-optical trap (MOT) as the target in electron impact cross section studies were carried out. The use of a MOT allows the kinematic properties of the target atoms, and their electronic states, to be controlled via operating parameters of the MOT's lasers. A MOT is capable of saturating the excited state of a gaseous target of atoms and provides a unique opportunity to measure exotic collision processes. Measurements use a trap-loss technique to relate the loss rate of atoms from the trap due to electron interactions to a collision cross section. Total scattering cross section measurements ...


Electron-Cluster Interactions: Excitation Of Neutral Fragments In Rare Gases And Simple Molecules., Charles Patrick Malone Jan 2003

Electron-Cluster Interactions: Excitation Of Neutral Fragments In Rare Gases And Simple Molecules., Charles Patrick Malone

Electronic Theses and Dissertations

The presented work on electron-cluster interactions utilizes mass and translational spectroscopic techniques that have traditionally been applied to atomic and molecular targets.


Energy Absorption And Load Management Characteristics Of Aluminum Foam-Filled Braided Tubes., Christopher Richard. Powell Jan 2003

Energy Absorption And Load Management Characteristics Of Aluminum Foam-Filled Braided Tubes., Christopher Richard. Powell

Electronic Theses and Dissertations

The work in this thesis presents the test results of an energy absorber that functions under tensile loading. Unlike conventional energy absorbing devices that function in compression, the aluminum foam filled braided tube design has the capability of absorbing energy in tension under quasi-static and dynamic loading. A series of quasi-static tests were performed with various aluminum foam densities to understand the relationship between foam density and energy absorption. It was determined from an analysis of the data that a linear relationship exists between foam density and energy absorption per unit volume of aluminum foam. A numerical model was developed ...