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Three-Dimensional Knapsack Problem With Pre-Placed Boxes And Vertical Stability, Hanan Mostaghimi Ghomi
Three-Dimensional Knapsack Problem With Pre-Placed Boxes And Vertical Stability, Hanan Mostaghimi Ghomi
Electronic Theses and Dissertations
A three-dimensional knapsack problem packs a subset of rectangular boxes inside a bin with fixed size such that the total value of packed boxes is maximized. Each box has its own value and size and can be freely rotated into any of the six positions while its edges are parallel to the bin's edges. A Mixed Integer Linear Programming is developed for the 3D knapsack problem, while some practical constraints such as vertical stability are considered. However, the given model can be applied to two dimensional problems as well. The proposed solution methodology is based on the sequence triple. Simulated …
Designing And Implementing A Hospital Environmental Management Framework, Taylor Purdy
Designing And Implementing A Hospital Environmental Management Framework, Taylor Purdy
Electronic Theses and Dissertations
Modern Canadian hospitals are large generators of landfilled waste. However, much of the waste disposed of by hospitals is divertible. A Hospital Environmental Management Framework (HEMF) was designed and implemented in a local hospital in an effort to control the organization's landfilled waste and improve environmental performance. Environmental issues are gaining awareness among businesses in other sectors, but are not commonly addressed in hospitals, where patient care takes priority over the environment. While specific, recommended waste reduction initiatives tailored to hospital operations have been widely published, information on how to implement these initiatives is lacking. The results from this research …
Accommodating The Wikipedia Project In Higher Education: A University Of Windsor Case Study, Timothy A. Brunet
Accommodating The Wikipedia Project In Higher Education: A University Of Windsor Case Study, Timothy A. Brunet
Electronic Theses and Dissertations
This study explores the question: How has higher education accommodated methods for organizing and disseminating knowledge during the development of the Wikipedia project? The prominence of the Wikipedia project on the Internet has caused an increasing interaction with higher education. This interaction creates an opportunity to consider how knowledge is organized and disseminated within both communities. The Wikimedia foundation has expressed their desire to make Wikipedia more scholarly and more stable. Members of the higher education community want their organizations to be more efficient, nimble, and accessible. Thematic analysis of interviews conducted with subject matter experts suggested that the use …
A Sustainability Assessment Framework For Infrastructure: Application In Stormwater Systems, Jyoti Kumari Upadhyaya
A Sustainability Assessment Framework For Infrastructure: Application In Stormwater Systems, Jyoti Kumari Upadhyaya
Electronic Theses and Dissertations
This research presents a three-pronged framework focusing on the functionality-survivability-sustainability (FSS) aspects for sustainability assessment using stormwater infrastructure as its example, and presents a case study to illustrate how the framework can be used. Existing sustainability assessment tools focus mainly on the functional aspects of environmental, social and economic performance separately with emphasis on reducing resource use, and do not capture the changing demands and issues comprehensively. Infrastructure sustainability is defined as the ability of the system to function well and be able to survive complex and emerging stressors without increasing resource consumption, impacting people's health and well-being, and be …
Application Of Neural Networks With Csd Coefficients For Human Face Recognition, Ayesa Parvin
Application Of Neural Networks With Csd Coefficients For Human Face Recognition, Ayesa Parvin
Electronic Theses and Dissertations
Face recognition is one of the most popular, reliable and widely used applications in real world. It is the main biometric used by humans in many security, law enforcement and commercial systems and high demand of this application attracts researchers from various fields such as image processing, pattern recognition, neural network and computer vision etc. In a Human Face Recognition Systems, we start with pre-processing of the data followed by feature extraction for dimensionality reduction and then classification. In this thesis, neural network classifier with CSD coefficients is used to make the area required for implementation of recognition system more …
Role Of Spy1 In Hematopoiesis: Implications For Blood Malignancies, Kaitlyn N. Matthews
Role Of Spy1 In Hematopoiesis: Implications For Blood Malignancies, Kaitlyn N. Matthews
Electronic Theses and Dissertations
In blood malignancies, the balance of hematopoietic stem cell (HSC) self-renewal and differentiation is disturbed such that HSCs produce abnormal cells with an increased capacity to proliferate; however, the exact causes of this imbalance are not known. SpeedyA1 (Spy1) is a positive cell cycle regulator known to enhance cellular proliferation by direct binding and activation of Cyclin-dependent kinase (Cdk) Cdk2 and by promoting degradation of the Cdk inhibitor (CKI) p27 Kip1 . I demonstrate that Spy1 expression levels are elevated in early stem and progenitor cells during hematopoiesis, but that Spy1 may also be implicated in later stages of myeloid …
Characterization Of Scf Ubiquitin-Ligase Subunits In Arabidopsis, Mohammad Haj Dezfulian
Characterization Of Scf Ubiquitin-Ligase Subunits In Arabidopsis, Mohammad Haj Dezfulian
Electronic Theses and Dissertations
The Arabidopsis thaliana genome encodes several families of polypeptides that are known or predicted to participate in the formation of the SCF-class of E3-ubiquitin ligase complexes. One such gene family encodes the Skp1-like class of polypeptide subunits, where 21 genes have been identified and are known to be expressed in Arabidopsis. The complexity of this family of Arabidopsis Skp1-like--or ASK --genes, together with the close structural similarity among its members, raises the prospect of significant functional redundancy among select paralogs. We have assessed the potential for functional redundancy within the ASK gene family by analyzing an expanded set of criteria …
Experimental Comparison Of Store-And-Forward And Wormhole Noc Routers For Fpga's, Krunal Jetly
Experimental Comparison Of Store-And-Forward And Wormhole Noc Routers For Fpga's, Krunal Jetly
Electronic Theses and Dissertations
Network on Chip (NoC) is an interconnection paradigm which is scalable and efficient for connecting increasing number of components on Field Programmable Systems on Chip (FPSOC). The router is a key component in NoC that impacts area performance, power consumption, etc. In this thesis we evaluate and compare two different router designs using real world benchmark. The first router uses Store-And-Forward strategy (SAF) and XY routing algorithm and the second router uses Wormhole (WH) as forwarding strategy and source routing algorithm. These routers were used to implement 4x4 mesh NoCs. A multi processor system benchmark obtained from Altera was implemented …
An Fpga Based Controller For A Mems Tri-Mode Fmcw Radar, Sabrina Zereen
An Fpga Based Controller For A Mems Tri-Mode Fmcw Radar, Sabrina Zereen
Electronic Theses and Dissertations
In this thesis a Xilinx Virtex 5 FPGA platform based signal processing algorithm has been developed and experimentally verified for use in a MEMS based tri-mode 77GHz FMCW automotive radar to determine range and velocity of targets in the vicinity of a host vehicle. The Xilinx Virtex 5 FPGA based signal processing and control algorithm dynamically reconfigures a MEMS based FMCW radar to provide a short, medium, and long-range coverage using the same hardware. The MEMS radar comprises of MEMS SP3T RF switches, microfabricated Rotman lens and a microstrip antenna embedded with MEMS SPST switches, in additional to other microelectronic …
Shrinkage And Penalty Estimation Strategies In Some Spatial Models, Marwan Al-Momani
Shrinkage And Penalty Estimation Strategies In Some Spatial Models, Marwan Al-Momani
Electronic Theses and Dissertations
In this dissertation, we study the asymptotic properties of pretest and shrinkage estimators of the large-scale effect in some spatial regression models, and compare their relative performance with respect to the classical maximum likelihood estimator (MLE) analytically and numerically through Monte Carlo experiments and real data examples. The shrinkage estimators were also numerically compared with three penalty estimators, namely, the LASSO, adaptive LASSO, and the SCAD penalty functions. A linear model with conditional autoregressive errors was studied in Chapter 2. The asymptotic properties of the shrinkage estimators, under local alternatives, were established, including the derivations of the asymptotic distributional bias, …
Automated Classification Of Medical Percussion Signals For The Diagnosis Of Pulmonary Injuries, Bhuiyan Md Moinuddin
Automated Classification Of Medical Percussion Signals For The Diagnosis Of Pulmonary Injuries, Bhuiyan Md Moinuddin
Electronic Theses and Dissertations
Used for centuries in the clinical practice, audible percussion is a method of eliciting sounds by areas of the human body either by finger tips or by a percussion hammer. Despite its advantages, pulmonary diagnostics by percussion is still highly subjective, depends on the physician's skills, and requires quiet surroundings. Automation of this well-established technique could help amplify its existing merits while removing the above drawbacks. In this study, an attempt is made to automatically decompose clinical percussion signals into a sum of Exponentially Damped Sinusoids (EDS) using Matrix Pencil Method, which in this case form a more natural basis …
Minimization Of Electrical Losses In A Vector Controlled Induction Machine Drive, Debarshi Biswas
Minimization Of Electrical Losses In A Vector Controlled Induction Machine Drive, Debarshi Biswas
Electronic Theses and Dissertations
Induction motors have found application in household goods as well as in industries. These machines are rugged and very easy to maintain, making them a favorite with the consumers. With the introduction of vector control induction motor drives have gained a lot of popularity. Induction motors, however, prove to be inefficient at low speeds when compared to other AC machines. Hence there is a need to improve the efficiency of induction machines over their entire speed range. Thus it is desirable to design a loss minimization controller which can improve the efficiency. This thesis therefore documents the following: 1. Modeling …
Thermal Conductivity Sensors In Automotive Applications, Weijun Deng
Thermal Conductivity Sensors In Automotive Applications, Weijun Deng
Electronic Theses and Dissertations
Over the last decade, there has been a growing research interest in the on-board fuel generated hydrogen in automotive application. In this thesis, in order to find a suitable sensor to work in a complex gas mixture, currently commercialized hydrogen sensors have been compared. Furthermore, a thermal conductivity sensor has been selected and studied. The concentrations of hydrogen, nitrogen and carbon monoxide gas mixtures were simulated in Matlab. Simulation results demonstrate that the thermal conductivity of the gas mixture is measurable. Carbon monoxide, which is as a main interference gas to the hydrogen detection, does not influence the detecting. Moreover, …
Emergency Department Triage Acuity Assignment In Patients With Sepsis At An Academic Tertiary Care Centre: Predictors And Outcomes, Leon Daniel Petruniak
Emergency Department Triage Acuity Assignment In Patients With Sepsis At An Academic Tertiary Care Centre: Predictors And Outcomes, Leon Daniel Petruniak
Electronic Theses and Dissertations
Recognition and prioritization of septic patients in the Emergency Department (ED) is a fundamental component of the management of sepsis, a condition that is frequently encountered in EDs and causes significant morbidity and mortality. However, it is not known how triage nurses determine acuity level among this group. The purpose of this study was to examine the factors that predict triage acuity level among septic patients, and to examine how patients with high versus low acuity scores differed with respect to time until receipt of first antibiotic, and 28-day in-hospital mortality. Logistic regression analysis suggested that high acuity assignment was …
Hydrogeophysical Investigation Of Contaminant Distribution At A Closed Landfill In Southwestern Ontario, Canada, Siddharth Dilip Joshi
Hydrogeophysical Investigation Of Contaminant Distribution At A Closed Landfill In Southwestern Ontario, Canada, Siddharth Dilip Joshi
Electronic Theses and Dissertations
The study looked at the application of geophysical and groundwater modeling methods to investigate the underground leachate distribution at a closed municipal landfill. Firstly, the apparent conductivity of the landfill was mapped using two coil separations. The resulting maps displayed a high conductive zone in the western portion of the site with measurements averaging between 35mS/m to 3000mS/m. The resistivity of the same high conductive zone was measured with resistivity profiles showing the waste material occupying the upper sand aquifer as a low resistivity anomaly ranging between 1.2 - 6 ohm*m. Results from the geophysical surveys were used to prepare …
Cooperative Functions Of Duetting Behaviour In Tropical Wrens, Kristin Ashley Kovach
Cooperative Functions Of Duetting Behaviour In Tropical Wrens, Kristin Ashley Kovach
Electronic Theses and Dissertations
Vocal duets occur when two breeding partners coordinate their songs into a joint display. Duetting serves functions both within and between pairs, and functionality is often context dependent. I explore the function of temporal coordination of male and female songs into duets, testing the hypothesis that coordinated duets are more threatening territorial signals than poorly coordinated duets or solos in three closely related species of wren. Results indicate that birds respond with similar levels of physical aggression to all three levels of coordination; however, they sing more duets in response to both categories of duets. I also explore duets and …
Micro Surface Texturing For Friction Control, Ola Rashwan
Micro Surface Texturing For Friction Control, Ola Rashwan
Electronic Theses and Dissertations
Recently, surface texturing has gained momentum as a way to control the friction which is involved in various applications and systems, such as components of internal combustion engines, dies and punches of the metal forming processes and Micro-electrical-mechanical Systems (MEMS). This dissertation demonstrates that under dry sliding, there is a specific significant surface texturing parameter at which the coefficient of friction should be at a minimum. This dissertation met this objective through an extensive study of the relevant literature on surface texturing and friction, analysing the friction mechanisms involved in dry sliding, and highlighting the key factors that control friction …
Parent And Young Adolescent Perspectives Of Family Meals And Meal Preparation And The Influence Of The Kinect-Ed Program, Jillian Ciccone
Parent And Young Adolescent Perspectives Of Family Meals And Meal Preparation And The Influence Of The Kinect-Ed Program, Jillian Ciccone
Electronic Theses and Dissertations
Recently, public health messaging has included having more family meals and involving young adolescents (YAs) with meal preparation in order to improve healthful diets and family dinner frequency (FDF). Kinect-Ed, a nutrition education program included a motivational presentation created to encourage YAs (grades 6-8) to help with meal preparation and ultimately improve FDF. The purpose of this study was to evaluate the Kinect-Ed presentation, correlations between YA/parent dyad responses, and to determine parents' perception of the Kinect-Ed. Participants consisted of YAs (n=113), and dyads (n=219) from the Niagara Region. Kinect-Ed successfully improved participants' FDF, food preparation frequency, self-efficacy for cooking, …
Proactive And Efficient Spare Parts Inventory Management Policies Considering Reliability Issues, Jingyao Gu
Proactive And Efficient Spare Parts Inventory Management Policies Considering Reliability Issues, Jingyao Gu
Electronic Theses and Dissertations
Spare parts inventory management plays an important role in many industries. They exist to serve the maintenance planning and a good planning can significantly reduce maintenance cost. This thesis developed a series of non-linear programming models to obtain optimal spare parts replenishment policies for failure-based maintenance in a single period. Both single Part Number case and multiple Part Numbers case with a budget constraint are addressed. Compared with traditional forecasting methods which only consider historical data, our proposed inventory policies take into account reliability issues and predict impending demands based on part failure distributions from two perspectives: failure time and …
A Role-Based Access Control Schema For Materialized Views, Hassaan Yousafi
A Role-Based Access Control Schema For Materialized Views, Hassaan Yousafi
Electronic Theses and Dissertations
This thesis research presents a framework that enhances security at the level of materialized views. Materialized views can be used for performance reasons in very large systems such as data warehouses or distributed systems, or for providing a filtered selection of data from a more general database. Existing proposed techniques provide rule-based access control for materialized views, however, the administration of such systems is time consuming and cumbersome in a large environment. This thesis presents a role-based access control schema for materialized views in which data authorization rules are associated with roles and defined in Datalog syntax in plain text …
Callous-Unemotional Traits: A Potential Mediator Of The Impulsivity-Antisocial Behaviour Relation, Andrew A. White
Callous-Unemotional Traits: A Potential Mediator Of The Impulsivity-Antisocial Behaviour Relation, Andrew A. White
Electronic Theses and Dissertations
The present study investigated the hypothesis that callous-unemotional traits mediate the relation between impulsivity and antisocial behaviour in an undergraduate, emerging adult sample. Participants (n=181) provided demographic information and completed a computerized battery of questionnaires and tasks addressing personality and behaviour. Total scores on the Inventory of Callous-Unemotional Traits (ICU) and Self-Report Delinquency Scale (SRD) were used as indicators of callous-unemotionality and antisociality, respectively. Stop-signal reaction time (SSRT) was calculated from a stop-signal task as an indicator of impulsivity. A stepwise multiple regression showed that the best combination of predictors for antisocial behaviour was having a mother whose highest level …
The Effect Of Attentional Focus On A Supra Postural Task In Hemiplegic Gait, Jecy Kunju Kunju
The Effect Of Attentional Focus On A Supra Postural Task In Hemiplegic Gait, Jecy Kunju Kunju
Electronic Theses and Dissertations
Dynamic stability during walking is important to prevent falls and to integrate patients into community ambulation. This study tries to examine the effect of attentional focus, mainly external focus of attention on a supra postural task while walking, in hemiplegic patients. Three cases were examined in detail. The participants were made to walk on a GAITRite(TM) walkway under three experimental conditions: 1) Baseline walking 2) Walking with a supra postural task with no instructional cues and performing a verbal task 3) Walking with a supra postural task with specific attentional focus instructions and the spatial and temporal parameters are recorded. …
Investigation Of In-Vehicle Speech Intelligibility Metrics For Normal Hearing And Hearing Impaired Listeners, Nikolina N. Samardzic
Investigation Of In-Vehicle Speech Intelligibility Metrics For Normal Hearing And Hearing Impaired Listeners, Nikolina N. Samardzic
Electronic Theses and Dissertations
The effectiveness of in-vehicle speech communication can be a good indicator of the perception of the overall vehicle quality and customer satisfaction. Currently available speech intelligibility metrics do not account in their procedures for essential parameters needed for a complete and accurate evaluation of in-vehicle speech intelligibility. These include the directivity and the distance of the talker with respect to the listener, binaural listening, hearing profile of the listener, vocal effort, and multisensory hearing. In the first part of this research the effectiveness of in-vehicle application of these metrics is investigated in a series of studies to reveal their shortcomings, …
The Observation Of Isochronous Behaviour In A Low Energy Electrostatic Storage Ring, Theresa Spanjers
The Observation Of Isochronous Behaviour In A Low Energy Electrostatic Storage Ring, Theresa Spanjers
Electronic Theses and Dissertations
An isochronous behaviour has been observed for electrons within a unique, ultra low energy electrostatic storage ring when operating using asymmetric lens potentials. In this work, isochronous refers to an unchanging temporal width of the stored pulse with increasing storage time. Evidence of changing behaviour from dispersive to isochronous has also been observed when storing singly and doubly charged ions. Isochronous behaviour is important when using the storage ring as a mass spectrometer. These observations have been investigated for the purpose of improving the mass resolution of the storage ring. A complete discussion of how this behaviour was observed and …
Cultural Experience, Possible Selves And Subjective Well-Being Among Anishnaabe Youth, Graham G. Trull
Cultural Experience, Possible Selves And Subjective Well-Being Among Anishnaabe Youth, Graham G. Trull
Electronic Theses and Dissertations
Aboriginal youth in Canada face a number of economic, health and social challenges, while being one of the fastest-growing segments of the country's population. Researchers have suggested that involvement in positive cultural experiences can be beneficial to the well-being of these youth. However, past research has not defined the types of cultural experience that are most impactful, or the areas of well-being that are affected. As well, no research has investigated the role that cultural experience may have on the views of the future among Aboriginal youth, or how these views may impact well-being. Working together with Walpole Island First …
Evaluation Of Root Zone Heating In A Commercial Greenhouse, Han Wang
Evaluation Of Root Zone Heating In A Commercial Greenhouse, Han Wang
Electronic Theses and Dissertations
Tomatoes, cucumbers and peppers are common greenhouse crops in Canada. In order to extend the growing season and reduce energy costs, a plant root heating system has been considered in this thesis. Although there is evidence to support the argument that root zone temperature has a significant effect on energy conservation, seed germination and plant growth, information regarding the temperature distribution in the root zone and the causal relationship between root zone temperature, energy savings and fruit yield in a commercial greenhouse is still scarce. This thesis describes a greenhouse experiment utilizing heated water flow through a rectangular plastic duct …
Comparison Of Austempering And Quench-And-Tempering Processes For Carburized Automotive Steels, Andrew Clark
Comparison Of Austempering And Quench-And-Tempering Processes For Carburized Automotive Steels, Andrew Clark
Electronic Theses and Dissertations
Austempering was examined as a replacement for the current quench-and-tempering process as a method of heat treating carburized low alloy steel automotive components. Three carburizing grade steels, SAE 8620, 4320, and 8822, were carburized and heat treated by both processes. Twelve austempering and three quench-and-tempering parameters were used. The effect of heat treatment on the case and core microstructures was examined. Distortion was characterized using Navy C-ring samples, which were measured before and after the carburizing and heat treatment process. X-ray diffraction was used to measure residual stress and retained austenite. Charpy impact and Rockwell C hardness testing were performed. …
Bell Hooks On Critical Thinking: The Successes And Limitations Of Practical Wisdom, Jamie Sewell
Bell Hooks On Critical Thinking: The Successes And Limitations Of Practical Wisdom, Jamie Sewell
Electronic Theses and Dissertations
Bell hooks' work on pedagogy covers a great deal of material in very broad strokes. She relies on the work of John Dewey and Paolo Freire, often drawing upon their critiques of traditional educational models to criticize the values she claims drive current models of education. When hooks addresses critical thinking explicitly, she reorients critical thinking toward practical aims, specifically democratic social progress. In order to better understand the potential value of her approach, and the relationship between critical thinking and democracy, I attempt to situate her conception of critical thinking as practical wisdom within current philosophical scholarship on critical …
Distributions Of Welding-Induced Residual Stresses In Steel Plate Structures, Sara Yaye Kenno
Distributions Of Welding-Induced Residual Stresses In Steel Plate Structures, Sara Yaye Kenno
Electronic Theses and Dissertations
One of the leading factors of early failure in welded steel structures is caused by the presence of residual stresses. These stresses are caused by the welding process and they can be as high as the yield stress of the material. The residual stresses along with the other service loads experienced by a structure can lead to premature failures. This study was completed to obtain a full understanding of the residual strains and stresses found in various steel plated welded structures. Several factors affecting the welding process were examined such as the welding heat input, the stiffener spacing, the thickness …
Young Children's Emotion Regulation And Social Skills: The Role Of Maternal Emotional Socialization And Mother-Child Interactional Synchrony, Holly Ambrose
Electronic Theses and Dissertations
The present study examined parent-child interactional synchrony and parents' socialization of emotion as predictors of young children's social and emotional functioning. Participants were 136 children aged 3 to 6 years (80 males, 56 females) and their mothers. Mothers' reports of their typical reactions to their children's negative emotional expressions and of their children's emotion regulation and social skills were attained. Mother-child dyads engaged in a free play task and a structured teaching task that were coded for interactional synchrony. Results revealed that mothers' distress reactions to children's negative emotions predicted emotion regulation difficulties in children, while mothers' minimizing reactions predicted …