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Articles 280021 - 280050 of 650618
Full-Text Articles in Entire DC Network
Emotion Processing Deficits In Disordered Eating Behaviours, Andreea Cristina Andreescu
Emotion Processing Deficits In Disordered Eating Behaviours, Andreea Cristina Andreescu
Electronic Theses and Dissertations
This study explored the relationship between disordered eating patterns (i.e., dieting, binging, and binge/purging) and emotion processing deficits (i.e., perceived emotion intensity, emotion regulation, and self-compassion). The sample consisted of 209 undergraduate participants who completed a series of self-reports measuring concepts of emotion processing and disordered eating. Additionally, they described an upsetting event and their subsequent coping to feel better. Results indicated that higher levels of disordered eating are associated with higher emotional processing deficits, specifically high levels of perceived emotion intensity, difficulty regulating affect, and diminished self-compassion. Furthermore, emotion regulation mediated the relationship between emotion intensity and disordered eating. …
Mechanical Properties And Microstructural Investigations Of Welded Mucell® Glass Fibre Reinforced Pa 6, Tianhao Guo
Mechanical Properties And Microstructural Investigations Of Welded Mucell® Glass Fibre Reinforced Pa 6, Tianhao Guo
Electronic Theses and Dissertations
In this research, three different nylon-fibre glass composites with 30–35 wt. % glass fibre and one with 50 wt. % glass fibre were fabricated using the microcellular (MuCell®) injection moulding process with the weight reduction from 4 to 10% and were tested through burst and fatigue tests. Microstructural observation and thermal analyze were also employed to investigate the effect of the MuCell® process on mechanical properties. In the first phase of this study, the B3WG6-GPX material exhibited the highest weld strength as well as the longest fatigue life. As a result, it was selected for further investigation in the second …
Efficient Architecture And Implementation For Ntru Based Systems, Bingxin Liu
Efficient Architecture And Implementation For Ntru Based Systems, Bingxin Liu
Electronic Theses and Dissertations
NTRU (Nth degree Truncated polynomial Ring Units) is probably the only post quantum public key cryptosystem suitable for practical implementation. Recently, several NTRU based systems have also been shown having property of homomorphic encryption with important application in cloud computing security. In this thesis, several efficient algorithms and architectures for NTRUEcrypt system and for NTRU based homomorphic encryption system are proposed. For NTRUEncrypt system, a new LFSR (linear feedback shift register) based architecture is firstly presented. A novel design of the modular arithmetic unit is proposed to reduce the critical path delay. The FPGA implementation results have shown that the …
A Case Study Of The Influence Of Student Recruitment Agencies On Chinese Students' Decision-Making When Pursuing Higher Education In English-Speaking Countries, Yiting Jiang
Electronic Theses and Dissertations
This case study examines in what ways student recruitment agencies influence the decision-making of Chinese students when pursuing higher education in English-speaking countries. Research shows that the decision-making process, involving selection of programs, institutions, and destinations for international students, is influenced by various factors (Chen & Zimitat, 2006; Hazelkorn, 2011; Mazzarol & Soutar, 2002; Pimpa, 2003). However, the extent to which student recruitment agencies influence the decisions of Chinese students has not been sufficiently studied. Research participants were 25 Chinese students who were using one student recruitment agency located in Northwest China. Data were collected through a questionnaire and interviews. …
An Extensible Natural-Language Query Interface To The Dbpedia Triple-Store, Wale Agboola
An Extensible Natural-Language Query Interface To The Dbpedia Triple-Store, Wale Agboola
Electronic Theses and Dissertations
DBpedia is a triple-based binary-relational database which contains 3 billion, and counting, facts derived from Wikipedia. Ideally, individuals should be able to access semantic web triple-store data through natural-language queries. Several attempts have been made to create natural-language (NL) query interfaces to DBpedia. However, no one has yet built a wide-coverage natural-language query processor for DBpedia. DBpedia does not currently encode contextual data representing the time, location or other properties of binary-relationships. This means that NL queries cannot contain prepositional phrases such as the phrase "in 2004" in the query: "what film was directed by Clint Eastwood in 2004". Existing …
Real Time Predictive Speed Analysis For High Speed Rail Collision Test, Xian Jian Jiang
Real Time Predictive Speed Analysis For High Speed Rail Collision Test, Xian Jian Jiang
Electronic Theses and Dissertations
In a real train collision test, a train locomotive needs to be propelled on a straight, guided path, to a particular speed, at which time the train locomotive is released to coast down towards a barrier where it is required to crash at a desired speed. The current control of the release speed and location is based on theoretical data and previous experience which leads to less accuracy in the actual crash speed. In this research work, the goal is to make improvements in a typical real train collision test that will help obtain a more accurate crash speed and …
Utilization Of Poly(A)-Binding Protein In Monitoring The Formation Of Mrnp Granules In Toxoplasma Gondii, Emad Manni
Utilization Of Poly(A)-Binding Protein In Monitoring The Formation Of Mrnp Granules In Toxoplasma Gondii, Emad Manni
Electronic Theses and Dissertations
Toxoplasma regulates its gene expression throughout its complex life cycle to survive and confront different kind of stresses. Here I aimed to gain a better understanding of how this regulation is maintained in Toxoplasma at the post-transcriptional level and in the aspect of the formation of messenger ribonucleoprotein complex (mRNPs). I chose to study the poly(A) binding protein (PABP). Metazoans usually encode multiple isoforms of PABP to function in nucleus and/or cytoplasm but in Toxoplasma there is only one predicted PABP. In this thesis, I studied the localization of the only predicted PABP in Toxoplasma (TgPABP). It was detected that …
Three Dimensional Real-Time Geographical Routing Protocols For Wireless Sensor Networks, Sarab F. Majed Al Rubeaai
Three Dimensional Real-Time Geographical Routing Protocols For Wireless Sensor Networks, Sarab F. Majed Al Rubeaai
Electronic Theses and Dissertations
One of the most important concerns in the operation of Wireless Sensor Network(WSN) is the real-time data delivery. This dissertation addresses the problem of real-time data delivery and void node problem in three dimensional WSN, which has a signicant impact on the network performance. In order to provide an accurate route calculation for reliable data delivery the third coordinate of the location sensor nodes is considered in this dissertation. Additionally, two dierent heuristic solutions for void node problem in three dimensional space have been provided to elevate the eect of long route and spares regions on assurance of real-time data …
Polyandry And Sperm Competition In The Alternative Reproductive Tactics In Chinook Salmon (Oncorhynchus Tshawytscha), Jason Lewis
Polyandry And Sperm Competition In The Alternative Reproductive Tactics In Chinook Salmon (Oncorhynchus Tshawytscha), Jason Lewis
Electronic Theses and Dissertations
Chinook salmon (Oncorhynchus tshawytscha) exhibit male alternative reproductive tactics (ARTs), in which males are either large, dominant hooknoses, or small precocious jacks. Multiple mating (or polyandry) is common by females, which partly explains the intense sperm competition. I examined whether females benefit genetically by mating with multiple males thus promoting sperm competition and whether males can use seminal plasma to influence the potential outcome during sperm competition. I found that polyandrous females do indeed benefit genetically compared to monandrous (singly mated) females through an increase in offspring hatching success. The benefits received by polyandrous females varied significantly depending on the …
Prospective Memory Following Traumatic Brain Injury: A Meta-Analysis, Daniela Wong Gonzalez
Prospective Memory Following Traumatic Brain Injury: A Meta-Analysis, Daniela Wong Gonzalez
Electronic Theses and Dissertations
Individuals with traumatic brain injury (TBI) report frequent and significant prospective memory deficits (Shum et al., 2011). This study presents a review and meta-analyses on prospective memory and TBI; focusing on clarifying the true effect of prospective memory deficits, the influence of task demands on performance, and the relationship between prospective memory and other cognitive functions. The results revealed that the difference in prospective memory performance between TBI and control groups was large (d = 0.987, SE = 0.087), indicating that TBI patients have significantly lower prospective memory performance than matched controls. Subgroup analyses revealed that prospective memory was poorer …
The Effects Of Mental Focus On Present Affect And Attributions Of Personal Meaning For Valenced Autobiographical Events, Chantal M. Boucher
The Effects Of Mental Focus On Present Affect And Attributions Of Personal Meaning For Valenced Autobiographical Events, Chantal M. Boucher
Electronic Theses and Dissertations
This study investigated how focusing on the concrete details (experience focus) versus broader life significance (coherence focus) of valenced transitions influences appraisals of event impact, self-relevance, and present affect. Participants selected a past event characterized by positive versus negative personal change and rated aspects of emotion during recall (valence, intensity, and reference point). They described the event using an experience or coherence focus and provided ratings on affect, impact, self-relevance, and memory characteristics. Cognitive emotion regulation and preference for abstraction were explored. A coherence (vs. experience) focus produced ratings of lower negative affect and higher psychological impact and self-change for …
Experiments With Point Placement Algorithms And Recognition Of Line Rigid Graphs, Pijus Kumar Sarker
Experiments With Point Placement Algorithms And Recognition Of Line Rigid Graphs, Pijus Kumar Sarker
Electronic Theses and Dissertations
The point placement problem is to determine the position of n distinct points on a line, up to translation and reflection by fewest possible pairwise adversarial distance queries. This masters thesis focusses on two aspects of point placement problem. In one part we focusses on an experimental study of a number of deterministic point placement algorithms and an incremental randomized algorithm, with the goal of obtaining a greater insight into the behavior of these algorithms, particularly of the randomize algorithm. The pairwise distance queries in the point placement problem creates a type of graph, called point placement graph. A point …
Methodologies For Life Cycle Assessment Of Passenger Vehicles, Kyle Jordan Capitano
Methodologies For Life Cycle Assessment Of Passenger Vehicles, Kyle Jordan Capitano
Electronic Theses and Dissertations
This thesis examines various guidelines for conducting LCA studies on passenger vehicles, and ultimately develops a new LCA guideline. The new guideline balances workload and capturing the major factors of the vehicle’s life cycle. For the analysis, three guidelines were applied to multiple FCA vehicles, representing conventional and alternative fuel drivetrains. The results of each guideline were assessed for their sources of variation, and the weight of each variable on the vehicle lifecycle. From the results, the vehicle’s material breakdown, basic driving emissions, use of climate control systems, and maintenance of parts, were found to have the highest environmental impact. …
Implications Of Developing Deep-Sea Arctic Fisheries For Greenland Halibut (Reinhardtius Hippoglossoides): Inshore Stock Connectivity And Capture Induced Stress Of Ecologically Important Fish Species, Amanda Noel Barkley
Electronic Theses and Dissertations
One of the most pressing issues facing developing Arctic fisheries is a lack of scientific knowledge available to inform management. This thesis develops two key ideas essential to establishing a sustainable harvest of Greenland Halibut (Reinhardtius hippoglossoides) within Scott Inlet, Baffin Island: inshore/offshore connectivity of Greenland Halibut stocks, and capture induced stress of Greenland Halibut and Greenland Shark (Somniosus microcephalus). The majority of Greenland Halibut only utilised the inshore environment during the summer, ice-free, season spending about 27±14 days within the system before exiting offshore. A small resident portion of fish, spent on average 261±79 days within Scott Inlet throughout …
Coating Prospects In Corrosion Prevention Of Aluminized Steel And Its Coupling With Magnesium, Fuyan Sun
Coating Prospects In Corrosion Prevention Of Aluminized Steel And Its Coupling With Magnesium, Fuyan Sun
Electronic Theses and Dissertations
In this study, a plasma electrolytic oxidation (PEO) process was used to form oxide coating on aluminized steel, heated aluminized steel and magnesium. A potentiodynamic polarization corrosion test was employed to investigate the general corrosion properties. Galvanic corrosion of steel samples and magnesium samples was studied by zero resistance ammeter (ZRA) tests and boiling tests. Scanning electron microscopy (SEM) and EDS were used to investigate the coating microstructure and the coating/substrate interface. In general, the PEO coatings on all three substrate can help prevent general corrosion. 6-min coated magnesium with unipolar current mode performs best in most galvanic couplings for …
Investigating And Overcoming Mathematics Anxiety In In-Service Elementary School Teachers, Atinuke Adeyemi
Investigating And Overcoming Mathematics Anxiety In In-Service Elementary School Teachers, Atinuke Adeyemi
Electronic Theses and Dissertations
Mathematics anxiety impedes learning and success in mathematics and could be a hindrance for both teachers and students. This sequential mixed methods research project examined the nature of mathematics anxiety among elementary in-service teachers and how the anxiety differs in terms of various demographic factors. It also investigated mathematics teaching anxiety, its types, and relationship with mathematics anxiety. Data were collected through an online survey completed by 111 elementary in-service teachers and follow up face-to-face interviews with four of them. Findings from the survey indicated that: 17.1% of them had low level of mathematics anxiety, 64% experienced a moderate level, …
E-Literacy Trends In Ontario's 21st Century Education: Successes, Challenges, And Possibilities, Nathan Joseph Briffa
E-Literacy Trends In Ontario's 21st Century Education: Successes, Challenges, And Possibilities, Nathan Joseph Briffa
Electronic Theses and Dissertations
Technological ubiquity in 21st century Canadian society calls for responsible use of information and communication technologies (ICTs). This thesis presents e-literacy theory, developed from a review of international benchmarks to address domains of capability, critical literacy, citizenry, and safety, to confront this need for K-12 education and teacher preparation. This study examines a selection of Ontario’s K-12 curricula and lived experiences of teacher candidates from a teacher education institution in Ontario. Eighty-four teacher candidates participated in an online survey questionnaire and eight participated in focus group discussions to help provide critical understanding of the current climate of e-literacy in teacher …
Exhaust Pressure Waves In Diesel Engines And The Impacts On Aftertreatment Sprays, Zhenyi Yang
Exhaust Pressure Waves In Diesel Engines And The Impacts On Aftertreatment Sprays, Zhenyi Yang
Electronic Theses and Dissertations
Aftertreatment devices are commonly used in diesel engine systems for emission control. To ensure the proper function of the aftertreatment devices, it is often necessary to inject additional fuel or a reducing agent into the exhaust flow. The conditions in the exhaust flow are affected by the exhaust pressure wave, caused by the reciprocating movement of the piston and valves. Therefore, this research investigates the factors that affect the exhaust pressure wave and the consequent impacts of this wave on a liquid spray. First, the exhaust pressure wave action was studied experimentally on a single cylinder diesel engine at various …
Flow-Induced Vibration Of A Flexible Circular Cylinder, Haoyang Cen
Flow-Induced Vibration Of A Flexible Circular Cylinder, Haoyang Cen
Electronic Theses and Dissertations
The offshore industry is currently experiencing challenges in designing flexible risers, cables etc., due to their susceptibility to FIV. Deeper understanding of the physics behind FIV is necessary in developing risers etc. This work presents two sets of experimental studies, collectively focusing on critical parameters that may greatly influence cylinder’s hydrodynamic response. A Tygon tube was towed from rest to steady speed before slowing down to rest again in still water. Axial pre-tension and mass ratio was varied for parametrically studying their effects on the cylinder’s hydrodynamic response, which was characterized mainly by vibration amplitudes and frequencies. The resulting effects …
Predictors Of Depression After Traumatic Brain Injury During Early And Late Recovery, Elmar Gardizi
Predictors Of Depression After Traumatic Brain Injury During Early And Late Recovery, Elmar Gardizi
Electronic Theses and Dissertations
Cognitive, neurological, and psychosocial predictors of depression after TBI were investigated in an Early and a Late Recovery group. The Early Recovery group consisted of 80 participants who were 1.3 years removed from their TBI, while the Late Recovery Group consisted of 107 participants who were 10.1 years removed from their TBI. Participants were enrolled in the Southeastern Michigan Traumatic Brain Injury System (SEMTBIS). Depression was measured using the Brief Symptom Inventory Depression subscale. The cognitive domains that were assessed included attention, executive functioning, and memory. Injury severity was used as a measure of neurological damage while psychosocial variables of …
The Point Placement Problem In An Inexact Model And Its Applications, Kishore Kumar Varaharajan Kannan
The Point Placement Problem In An Inexact Model And Its Applications, Kishore Kumar Varaharajan Kannan
Electronic Theses and Dissertations
In the recent years, due to the advancement in computational tools and techniques to analyze the biological data, biologists have been actively engaged in conducting different experiments to study the arrangements of nucleotide sequence in a chromosome. This masters thesis focuses on the area of the computational methods for the genomic map problem. Though the probe location problem under consideration is known to be NP complete, it is possible to obtain approximate solutions. The distance geometry approach for achieving efficient and better results is shown here. This also solves the point placement problem when the available distance bounds on some …
Writing To Heal: What Kinds Of Emotions Predict Outcome In Expressive Writing?, Tsubasa Sawashima
Writing To Heal: What Kinds Of Emotions Predict Outcome In Expressive Writing?, Tsubasa Sawashima
Electronic Theses and Dissertations
In the current study, the aim was to explore whether certain types of emotions that emerge in participants’ personal narratives of past traumatic events are associated with subsequent improvement in emotional well-being following expressive writing. The sample was archival data consisting of 255 undergraduate students. Participants’ narrative material was coded for the presence of key emotions. Participants’ psychological well-being was assessed at baseline, and at 17 and 31 days post-intervention. Participants were observed to evidence different key emotional states that were differentially associated with symptom distress. No relationship was observed between expressions of different emotions and participants’ subsequent emotional development. …
Computational Investigations On Enzymatic Catalysis And Inhibition, Daniel James Simard
Computational Investigations On Enzymatic Catalysis And Inhibition, Daniel James Simard
Electronic Theses and Dissertations
Enzymes are the bimolecular “workhorses” of the cell due to their range of functions and their requirement for cellular success. The atomistic details of how they function can provide key insights into the fundamentals of catalysis and in turn, provide a blueprint for biotechnological advances. A wide range of contemporary computational techniques has been applied with the aim to characterize recently discovered intermediates or to provide insights into enzymatic mechanisms and inhibition. More specifically, an assessment of methods was conducted to evaluate the presence of the growing number 3– and 4–coordinated sulfur intermediates in proteins/enzymes. Furthermore, two mechanisms have been …
The Efficacy Of Mindfulness-Based Therapies For Attention-Deficit/Hyperactivity Disorder: A Meta-Analytic Review, Molly Cairncross
The Efficacy Of Mindfulness-Based Therapies For Attention-Deficit/Hyperactivity Disorder: A Meta-Analytic Review, Molly Cairncross
Electronic Theses and Dissertations
Mindfulness-based therapies (MBT) have been shown to be efficacious in treating internally-focused psychological disorders (e.g., depression), however it is still unclear whether MBT provide improved functioning and symptom relief for individuals with externalizing disorders, including ADHD. In order to clarify the literature on the efficacy of MBT in treating ADHD and to guide future research, an effect size analysis was conducted. A systematic review of studies published in PsycINFO, PubMed, and Google Scholar was completed from the earliest available date until December 2014. A total of eight studies were included in the analysis of inattention and the overall effect size …
Symbolic Representations Versus Embodiment: A Test Using Semantic Neighbours And Iconicity, Simritpal Kaur Malhi
Symbolic Representations Versus Embodiment: A Test Using Semantic Neighbours And Iconicity, Simritpal Kaur Malhi
Electronic Theses and Dissertations
According to the symbolic representation account, word meaning can be sufficiently captured by lexical co-occurrence models (Markman & Dietrich, 2000). In contrast, the embodied cognition account maintains that words are understood via simulated perceptual experiences (Barsalou, 1999). The Symbol Interdependency Hypothesis reconciles these different approaches by proposing that we use symbolic representation most of the time and embodied approaches when deeper processing is required (Louwerse, 2007). To test this hypothesis, a series of experiments manipulated symbolic and embodied factors in shallow and deep processing tasks. Concreteness was also manipulated because it is thought to interact with depth of processing. Overall, …
Wind-Induced Response Of Bridge Stay Cables In Unsteady Wind, Arash Raeesi
Wind-Induced Response Of Bridge Stay Cables In Unsteady Wind, Arash Raeesi
Electronic Theses and Dissertations
Due to their long flexible nature and low inherent damping, stay cables on cable-stayed bridges are prone to dynamic excitations such as wind. Of specific interest to this research study is the dry inclined cable galloping phenomenon which has been addressed as a potential risk to stay cables. However, due to the complex nature of flow on a bridge site, differentiation between different wind-induced phenomena and their mechanism is very challenging. Several wind tunnel studies have confirmed the occurrence of dry inclined cable galloping under circumstances that could be easily satisfied on site. On the other hand, the transferability of …
Foundational Learning And Rehabilitation: An Investigation Of The Remedial Strategies Of Postsecondary Violin Instructors, Vanessa Andrea Mio
Foundational Learning And Rehabilitation: An Investigation Of The Remedial Strategies Of Postsecondary Violin Instructors, Vanessa Andrea Mio
Electronic Theses and Dissertations
Applied violin instructors at the postsecondary level often face the task of having to implement rehabilitation (remedial/corrective pedagogy) with incoming first-year students in order to address technical/musical habits or deficiencies. (Burt & Mills, 2006; Rolland, 1974b; Zweig, 2008). If students are not guided appropriately in the critical early stages, they increase their potential of developing poor technical habits or deficiencies that could be carried with them into their future studies (Hallam, 2013; Howe & Sloboda, 1991b; Kempter, 2003; Mills & Smith, 2003; Nerland, 2007). As various motor patterns are formed through habitual reinforcement, incorrect techniques may be strengthened (Salzberg & …
Behaviour Of Open Web Steel Joist In Composite Deck Floor System, Aiman M. Ibrahim Muhammad
Behaviour Of Open Web Steel Joist In Composite Deck Floor System, Aiman M. Ibrahim Muhammad
Electronic Theses and Dissertations
The objective is experimentally investigate the ability of other simple and fast to apply shear connectors like puddle-welds and Hilti-screw to develop composite action between the slab and girders. Two full-scale tests each consisted of 2400 mm wide, 6700 mm long and 65 mm thick concrete deck cast on top of corrugated steel sheets. The deck slab is supported over two OWSJ each of 250 mm depth and spaced transversally at 1200 mm with 600 mm overhang on each side. The composite floor system is simply supported in the longitudinal direction over 6400 mm span and was loaded monotonically till …
Fathers' Physical Play With Their Children With Autism: Benefits For Fathers, Jason Bloom
Fathers' Physical Play With Their Children With Autism: Benefits For Fathers, Jason Bloom
Electronic Theses and Dissertations
The present study investigated fathers’ physical play with their children with Autism (ASD), and the benefits of this play for fathers. Benefits included improvements in parenting stress, impact on parenting, and life satisfaction, which are challenges that fathers of children with ASD experience. Fathers of sons with ASD aged 4-11 (N = 60) completed an online survey, and 20 completed an additional phone interview. Multiple regression analyses revealed that more frequent physical play behaviours (i.e., tickling, piggyback riding) were associated with lower parenting stress scores for fathers. Analyses also revealed that higher satisfaction with play and relationship-quality were associated with …
Reactivity Of 1,2,5,6-Tetrathiocines, Justin David Wrixon
Reactivity Of 1,2,5,6-Tetrathiocines, Justin David Wrixon
Electronic Theses and Dissertations
This thesis describes selected chemistry of 1,2,5,6-tetrathiocines, 8-membered heterocycles containing four S atoms which can be considered as bis(disulfides). Chapter 1 provides a literature review of the existing chemistry of 1,2,5,6-tetrathiocines. Chapters 2 – 4 examine the oxidative addition chemistry of tetrathiocines to zero-valent group 10 metal complexes in the presence of an auxiliary phosphine ligand under microwave conditions to afford nickel, palladium and platinum dithiolate complexes. These chapters probe the effect of the metal (Chapter 2), the auxiliary phosphine (Chapter 3) and the tetrathiocine (Chapter 4) on the outcome of the chemical reaction, leading to a range of mono-, …