Digital Commons Network^™

Rehabilitation Of Corroded Steel Beam With Bfrp And Cfrp Fabrics, Amirreza Bastani

Electronic Theses and Dissertations

In Canada, USA, and other countries, a large number of steel structures such as steel beams, steel trusses, and steel columns have been faced with various deteriorations such as corrosion and cracks. Hence, the need for development and validation of cheaper, greener, efficient, and innovative rehabilitation techniques for these deficient steel structures is on the rise. Several research studies were conducted on rehabilitation of corroded steel beams using carbon fiber reinforced polymer (CFRP) fabrics. However, only a very limited studies were undertaken to determine the effectiveness of basalt fiber reinforced polymer (BFRP) fabrics for flexural rehabilitation of steel beams. Further, …

Efficient Computation And Fpga Implementation Of Fully Homomorphic Encryption With Cloud Computing Significance, Qiang Zeng

Electronic Theses and Dissertations

Homomorphic Encryption provides unique security solution for cloud computing. It ensures not only that data in cloud have confidentiality but also that data processing by cloud server does not compromise data privacy. The Fully Homomorphic Encryption (FHE) scheme proposed by Lopez-Alt, Tromer, and Vaikuntanathan (LTV), also known as NTRU(Nth degree truncated polynomial ring) based method, is considered one of the most important FHE methods suitable for practical implementation. In this thesis, an efficient algorithm and architecture for LTV Fully Homomorphic Encryption is proposed. Conventional linear feedback shift register (LFSR) structure is expanded and modified for performing the truncated polynomial ring …

Prediction Of Exhaust Skin Temperature Integrating 1d Model With Vehicle Level Cfd Model, Sudharsan Annur Balasubramanian

Electronic Theses and Dissertations

Studies involving flow and heat transfer in automotive exhaust systems are regularly employed in the design and optimization phases. Both internal as well as external heat transfer are key to provide a better understanding of the underbody heat transfer, cold start warm-up and thermal aging of the catalytic converter for gasoline engines and adequate thermal protection for the underbody components. The internal flow in a typical automobile exhaust system can be simplified using a 1D model employing correctional factors to encompass the three-dimensional effects. However, the external flow and heat transfer underbody of a vehicle is highly complex as it …

An On-Chip Pvt Resilient Short Time Measurement Technique, Esrafil Jedari Sefidgari

Electronic Theses and Dissertations

As the CMOS technology nodes continue to shrink, the challenges of developing manufacturing tests for integrated circuits become more difficult to address. To detect parametric faults of new generation of integrated circuits such as 3D ICs, on-chip short-time intervals have to be accurately measured. The accuracy of an on-chip time measurement module is heavily affected by Process, supply Voltage, and Temperature (PVT) variations. This work presents a new on-chip time measurement scheme where the undesired effects of PVT variations are attenuated significantly. To overcome the effects of PVT variations on short-time measurement, phase locking methodology is utilized to implement a …

The Relationship Between Fat Stereotypes And Body Dissatisfaction In Normal Weight Women: A Mediated Moderation Model, Jean Kim

Electronic Theses and Dissertations

Fat stereotypes refer to beliefs about traits that are considered characteristic of individuals carrying excess weight. Endorsing these beliefs is associated with negative body image in overweight and obese individuals. In normal weight women, however, these beliefs have a more nuanced effect on body image. The purpose of these studies was to extend existing literature on the relationship between fat stereotype endorsement and body dissatisfaction in normal weight women. A mediated moderation model was proposed. Specifically, body surveillance was investigated as a moderator of the relationship between fat stereotype endorsement and body dissatisfaction. Further, downward physical appearance comparison was examined …

International Students' Perceived University Schooling Experience In The Face Of Internationalization, Anouchka Plumb

Electronic Theses and Dissertations

In an era of widespread neoliberal ideology underpinning the organizational field of education, universities are thrust into developing revenue generating education systems. The ramping up of higher education internationalization through international student mobility is undeniable when looking at the growing number of international students on Canadian university campuses. According to the Canadian Bureau of International Education (CBIE) (2016), the number of international students pursuing academic studies has increased from 353 570 in 2015 to 438 157 in 2016. The projected increase to 450 000 by 2022 (CBIE, 2016) has already been surpassed with a total of 494 525 international students …

Study The Effects Of Multilevel Selection In Multi-Population Cultural Algorithm, Dilpreet Singh

Electronic Theses and Dissertations

This is a study on the effects of multilevel selection (MLS) theory in optimizing numerical functions. Based on this theory, a new architecture for Multi-Population Cultural Algorithm is proposed which incorporates a new multilevel selection framework (ML-MPCA). The approach used in this paper is based on biological group selection theory that states natural selection acts collectively on all the members of a given group. The effects of cooperation are studied using n-player prisoner’s dilemma. In this game, N individuals are randomly divided into m groups and individuals independently choose to be either cooperator or defector. A two-level selection process is …

How Is Shame Resolved? An Experimental Study On The Roles Of Anger And Sadness, Tsubasa Sawashima

Electronic Theses and Dissertations

Introduction: The aim of the current study was to explore emotional sequences involved in resolving shame, with a primary focus on comparing the effects of facilitating anger vs. facilitating sadness in the context of shame activation. The main hypothesis posited that facilitating anger, as opposed to sadness, would better promote emotional recovery from shame. This was inspired by an emerging line of research suggesting that facilitating an emotion that is incongruent (e.g., anger), as opposed to congruent (e.g., sadness), in its action tendency with the emotional distress presenting (e.g., shame) might better promote emotional outcome. Method: A randomized experimental design …

Novel Methods For Permanent Magnet Demagnetization Detection In Permanent Magnet Synchronous Machines, Min Zhu

Electronic Theses and Dissertations

Monitoring and detecting PM flux linkage is important to maintain a stable permanent magnet synchronous motor (PMSM) operation. The key problems that need to be solved at this stage are to: 1) establish a demagnetization magnetic flux model that takes into account the influence of various nonlinear and complex factors to reveal the demagnetization mechanism; 2) explore the relationship between different factors and demagnetizing magnetic field, to detect the demagnetization in the early stage; and 3) propose post-demagnetization measures. This thesis investigates permanent magnet (PM) demagnetization detection for PMSM machines to achieve high-performance and reliable machine drive for practical industrial …

Design Of A Remanufacturing Process For An Air Conditioning Unit And Its Environmental Implications., Aiman Ziout

Electronic Theses and Dissertations

Remanufacturing is considered as the most preferable recovery option. The objective of this thesis is to verify this claim and test its validity. A window-mount air conditioner (AC) is selected as a case study to verify the environmental benefits of remanufacturing a product characterized by high energy consumption during the use phase in its lifecycle. A lifecycle approach has been followed. The research investigates the environmental savings in regard to a remanufactured AC compared to a new and equivalent AC. The assessment is conducted with the guidance of the ISO 14044 -2006 life cycle assessment (LCA). Analysis shows that AC …

An Approach Of Traffic Flow Prediction Using Arima Model With Fuzzy Wavelet Transform, Sukruti Vaghasia

Electronic Theses and Dissertations

It is essential for intelligent transportation systems to be capable of producing an accurate forecast of traffic flow in both the short and long terms. However, the counting datasets of traffic volume are non-stationary time series, which are integrally noisy. As a result, the accuracy of traffic prediction carried out on such unrefined data is reduced by the arbitrary components. A prior study shows that Box-Jenkins’ Autoregressive Integrated Moving Average (ARIMA) models convey demand of noise-free dataset for model construction. Therefore, this study proposes to overcome the noise issue by using a hybrid approach that combines the ARIMA model with …

Supply Chain Risk Management In Automotive Industry, Shiping Zhu

Electronic Theses and Dissertations

The automotive industry is one of the world's most important economic sectors in terms of revenue and employment. The automotive supply chain is complex owing to the large number of parts in an automobile, the multiple layers of suppliers to supply those parts, and the coordination of materials, information, and financial flows across the supply chain. Many uncertainties and different natural and man-made disasters have repeatedly stricken and disrupted automotive manufacturers and their supply chains. Managing supply chain risk in a complex environment is always a challenge for the automotive industry. This research first provides a comprehensive literature review of …

Prediction Of Surface Quality Using Artificial Neural Network For The Green Machining Of Inconel 718, Fahad Ameen

Electronic Theses and Dissertations

Inconel 718 is a nickel-based heat resistant super-alloy (HRSA) that is widely used in many aerospace and automotive applications. It possesses good properties like corrosion resistance, high strength, and exceptional weld-ability but it is considered as one of the most difficult alloys to cut. Recently researchers have focused on employing many machining strategies to improve machinability of Inconel 718. This research work presents the experimentation of wet milling of Inconel 718 using a carbide tool with biodegradable oil. Surface quality is the major aspect of machinability. Hence input parameters such as depth of cut, cutting speed, and feed rate are …

Development Of Laser-Induced Breakdown Spectroscopy As A Rapid Diagnostic Tool For Bacterial Infection, Alexandra Elizabeth Paulick

Electronic Theses and Dissertations

A rapid elemental analysis technique known as laser-induced breakdown spectroscopy (LIBS) has been shown to be a promising tool for detection and identification of pathogens. The aim of this work was to demonstrate the feasibility of the LIBS technique as a point-of-care diagnostic tool for bacterial infection. A size-based technique for separating bacteria from unwanted material that could be present in a clinical specimen was developed using a custom-built centrifuge tube insert device. Tungsten powder was used to simulate unwanted contaminants in a bacterial suspension, all of which was removed from suspension while 90% of the bacteria were successfully separated …

Effects Of Acoustic Telemetry Transmitter Implantation On Survival, Growth, Resting Metabolic Rate, And Swimming Performance In Juvenile Rainbow Trout (Oncorhynchus Mykiss) And Lake Trout (Salvelinus Namaycush), Andrew Paxton Darcy

Electronic Theses and Dissertations

The objectives of this study were to investigate acoustic tag burden in two juvenile salmonid species; rainbow trout (Oncorhynchus mykiss) and lake trout (Salvelinus namaycush), explore the relationship between metabolic rate and swimming performance in tagged and untagged individuals, and investigate effects of surgery and tag implantation on survival and growth. Laboratory experiments measured tag burden effects in fish sizes (e.g., 9-39 g and 105-159 mm (fork length; LF)) typically stocked by Ontario Ministry of Natural Resources and Forestry (OMNRF) and other natural resource management agencies. The analysis revealed no significant effects of acoustic tagging on survival, growth, oxygen consumption …

Stress, Coping, And Religiosity Among Recent Syrian Refugees In Canada, Sara Keshavarzi

Electronic Theses and Dissertations

As of November 2015, 34 696 Syrian refugees have resettled in Canada (Government of Canada, 2016). Previous studies with refugee populations have found: a) depression, anxiety, and posttraumatic stress disorder resulting from trauma in their country of origin; and b) problems with discrimination and Islamophobia in new host cultures. Thus, coping strategies have been crucial for refugees to thrive in their new host countries. The current study conducted qualitative interviews with 10 recently arrived Muslim, Arab, Syrian refugees in Windsor, Ontario. The interviews explored participants’ pre- and post-arrival experiences in Syria and Canada. The interviews were recorded, transcribed, and coded …

Relativistic Corrections To Nonrelativistic Electric Dipole Transitions, Daniel Venn

Electronic Theses and Dissertations

Radiative transition probabilities for light atoms and ions are normally calculated from nonrelativistic wave functions and the electric dipole transition operator. For the nonrelativistic energies, the theory of relativistic corrections is well established in terms of the Breit interaction, but the same is not true for relativistic corrections to transition probabilities. The main focus of this work to perform high precision variational calculations for the relativistic corrections for the case of allowed electric dipole transitions, and to compare with known results for the one-electron case. The calculation involves the use of perturbation theory, using pseudostates to sum over the complete …

Modeling Polychlorinated Biphenyls And Mercury Bioaccumulation And Elimination By Fish, Shifeng Yao

Electronic Theses and Dissertations

No abstract provided.

Big Data Mining To Construct Truck Tours, Vidhi Kantibhai Patel

Electronic Theses and Dissertations

Cross-Border shipping of goods among different distributors is an essential part of transportation across Canada and U.S. These two countries are heavily dependent on border crossing locations to facilitate international trade between each other. This research considers the identification of the international tours accomplishing the shipping of goods. A truck tour is a round trip where a truck starts its journey from its firm or an industry, performing stops for different purposes that include taking a rest, fuel refilling, and transferring goods to multiple locations, and returns back to its initial firm location. In this thesis, we present a three …

Performance Evaluation Of Competing Data Structures, Mohsen Tavakoli

Electronic Theses and Dissertations

Pathfinding is an essential part of many applications, including video games and robot navigation. A pathfinding algorithm usually finds a path from the given starting point to the endpoint. Many different implementations of pathfinding solutions exist in the industry. One of the most known and used of these algorithms is A*. A* will find the shortest path from the starting point to the endpoint. Classic A* algorithm can guarantee the shortest path to the desired destination which was introduced in 1968 by Hart, Nilsson, and Raphael. A* is widely used in the game industry to solve the shortest path problem. …

Identifying A Neurological Substrate For Body Image Investment Through Electroencephalography, Healey M. Gardiner

Electronic Theses and Dissertations

Body image investment consists of the importance placed on appearance, and the behaviours utilized to maintain or improve appearance. Within body image investment, self-evaluative salience refers to the importance placed on appearance for self-definition. Body image investment may be conceptualized as a schema, which is a cognitive structure that organizes information. Schemata may impact how an individual reacts to stimuli. Such reactions may be viewed neurologically by recording the cortical activity of the frontal lobes with EEG, and interpreting asymmetric frontal lobe activity using the Motivational Direction Hypothesis. This hypothesis posits that greater left frontal activity is indicative of approach …

Two Photon Processes Within The Hyperfine Structure Of Hydrogen, Spencer Dylan Percy

Electronic Theses and Dissertations

The hyperfine levels for the ground state of hydrogen are normally connected by magnetic dipole transitions. However, for astrophysical applications, it may be that two-photon electric dipole processes are also important over cosmological distances. This thesis sets up a general mathematical formalism for the calculation of two-photon processes within the hyperfine structure of an atom with spin $1/2$, and applies it to the ground state of hydrogen. Rates are calculated for both spontaneous emission and absorption of radiation. Due to an extraordinary degree of cancellation in the matrix elements, the rates turn out to be too small to have a …

The Function And Evolution Of Vocal And Visual Signals In A Neotropical Songbird, The Rufous-Capped Warbler (Basileuterus Rufifrons), Alana Dawn Demko

Electronic Theses and Dissertations

Animals communicate using multiple signaling modalities, with vocal and visual signals being the most prevalent in birds. The responses of animals to signal divergence among populations, along with the extent of divergence itself, may promote reproductive isolation and potentially speciation. Research on mating signal divergence, and experimental tests of responses to divergent signals, will expand our understanding of the mechanisms of reproductive isolation. In my dissertation, I investigated the form and function of vocal and visual signals in the Rufous-capped Warbler (Basileuterus rufifrons), a Neotropical resident songbird with complex song and bright plumage. I described male vocal behaviour in this …

The Effect Of Near-Spark-Plug Flow Field On Spark Discharge Characteristics, Navjot S. Sandhu

Electronic Theses and Dissertations

Advanced spark ignition (SI) engines can operate under lean conditions in order to improve the efficiency and reduce the emissions. Under extensive lean conditions, the ignition and complete combustion of the charge mixture is a challenge, because of the reduced cylinder charge reactivity. The enhancement of the in-cylinder global motion and local turbulence is an effective way to increase the flame velocity, and consequently shorten the combustion duration. The role of air motion in improving air-fuel mixing and combustion has been researched extensively. However, during the ignition process, the excessive charge motion can hinder the spark discharge, the resulting flame …

Investigation On Lean Nox Trap Regeneration Using Alcohol Fuels, Divyanshu Purohit

Electronic Theses and Dissertations

The impacts of automotive pollutants on local air quality, human health, and climate change are a major concern worldwide. Therefore, the internal combustion engine (ICE) powered automobiles are expected to be able to meet the increasingly stringent emission and fuel efficiency standards. The reduction in oxides of nitrogen (NOx) in lean burn and diesel-fueled compression ignition (CI) engines is a major challenge. In this research, the use of alcohol fuel such as n-butanol and ethanol is studied in a CI engine. With the application of moderate exhaust gas recirculation (EGR), low engine-out NOx and soot emissions are achieved simultaneously. However, …

Model-Guided Data-Driven Optimization And Control For Internal Combustion Engine Systems, Qingyuan Tan

Electronic Theses and Dissertations

The incorporation of electronic components into modern Internal Combustion, IC, engine systems have facilitated the reduction of fuel consumption and emission from IC engine operations. As more mechanical functions are being replaced by electric or electronic devices, the IC engine systems are becoming more complex in structure. Sophisticated control strategies are called in to help the engine systems meet the drivability demands and to comply with the emission regulations. Different model-based or data-driven algorithms have been applied to the optimization and control of IC engine systems. For the conventional model-based algorithms, the accuracy of the applied system models has a …

Optimal Rwa For Sdm Optical Network Under Dynamic Traffic, Dhruvi Patel

Electronic Theses and Dissertations

With the rapid increase in demand for data transmission in our generation where Internet and cloud concepts play an essential role, it has become mandatory that we handle data most efficiently. A promising solution to overcome the capacity crunch problem which is so evident in future is applications of Space Division Multiplexing, where we explore the remaining unused domain that is the spectral and spatial domain. Space Division Multiplexing using multi-core fibers (MCF), and few-mode fibers (FMF) has been studied in our work to enhance the data-carrying capacity of optical fibers while minimizing the transmission cost per bit. The objective …

Cir Parametric Rules Precocity For Ranging Error Mitigation In Ir-Uwb, Sunil K. Meghani

Electronic Theses and Dissertations

The cutting-edge technology to support high ranging accuracy within the indoor environment is Impulse Radio Ultra Wide Band (IR-UWB) standard. Besides accuracy, IR-UWB’s low-complex architecture and low power consumption align well with mobile devices. A prime challenge in indoor IR-UWB based localization is to achieve a position accuracy under non-line-of-sight (NLOS) and multipath propagation (MPP) conditions. Another challenge is to achieve acceptable accuracy in the conditions mentioned above without any significant increase in latency and computational burden. This dissertation proposes a solution for addressing the accuracy and reliability problem of indoor localization system satisfying acceptable delay or computational complexity overhead. …

An Improved Public Unclonable Function Design For Xilinx Fpgas For Hardware Security Applications, Siva Prashanth Balasubramanian

Electronic Theses and Dissertations

In the modern era we are moving towards completely connecting many useful electronic devices to each other through internet. There is a great need for secure electronic devices and systems. A lot of money is being invested in protecting the electronic devices and systems from hacking and other forms of malicious attacks. Physical Unclonable Function (PUF) is a low-cost hardware scheme that provides affordable security for electronic devices and systems.

This thesis proposes an improved PUF design for Xilinx FPGAs and evaluates and compares its performance and reliability compared to existing PUF designs. Furthermore, the utility of the proposed PUF …

Preparation And Characterization Of Radical-Coated Nanoparticles, Aisha Abdulwahab Alsaleh

Electronic Theses and Dissertations

The topic of this dissertation is the surface modification and functionalization of inorganic nanoparticles with free radicals. These particles have a diameter up to ca. 15 nm and consist of an inorganic core with an organic surface coating comprising open shell organic TEMPO radicals.

Chapter 1 describes synthetic methods for the preparation of gold nanoparticles (AuNPs) and introduces the range of analytical methods for nanoparticle characterization. A survey of previous work on radical-coated nanoparticles is presented and the objectives of the current studies are outlined, highlighting the range of different bonding strategies for attaching the TEMPO radical to the AuNP …