publisher:("University of Toledo")

University of Toledo

1. Schmidt, Brian A. Determining the Habitat Limitations of Maumee River Walleye Production to Western Lake Erie Fish Stocks.

Degree: MS, Biology (Ecology), 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463067261

► Tributaries support diverse spawning habitats for three of the four major sub-stocks of Lake Erie walleye (<i>Sander vitreus</i>). Despite a long history of anthropogenic degradation… (more)

Subjects/Keywords: Biology; Ecology; Freshwater Ecology

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APA (6^th Edition):

Schmidt, B. A. (2016). Determining the Habitat Limitations of Maumee River Walleye Production to Western Lake Erie Fish Stocks. (Masters Thesis). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463067261

Chicago Manual of Style (16^th Edition):

Schmidt, Brian A. “Determining the Habitat Limitations of Maumee River Walleye Production to Western Lake Erie Fish Stocks.” 2016. Masters Thesis, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463067261.

MLA Handbook (7^th Edition):

Schmidt, Brian A. “Determining the Habitat Limitations of Maumee River Walleye Production to Western Lake Erie Fish Stocks.” 2016. Web. 18 Feb 2020.

Vancouver:

Schmidt BA. Determining the Habitat Limitations of Maumee River Walleye Production to Western Lake Erie Fish Stocks. [Internet] [Masters thesis]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463067261.

Council of Science Editors:

Schmidt BA. Determining the Habitat Limitations of Maumee River Walleye Production to Western Lake Erie Fish Stocks. [Masters Thesis]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463067261

University of Toledo

2. Brezinski, Kyle Jordan. You PC Bro? How Experiences of Racial Microaggressions Affect Undergraduate African American Student Retention.

Degree: PhD, Counselor Education and Supervision, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463129299

► This study assesses the impact of racial microaggressions on African American college students. I examine the relationship between racial microaggressions and college students’ retention. This… (more)

Subjects/Keywords: Counseling Education; Racial microaggressions, racial discrimination, racism, racial microaggressions scale, RMAS, African Americans, retention, undergraduate, college, university, campus climate

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APA (6^th Edition):

Brezinski, K. J. (2016). You PC Bro? How Experiences of Racial Microaggressions Affect Undergraduate African American Student Retention. (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463129299

Chicago Manual of Style (16^th Edition):

Brezinski, Kyle Jordan. “You PC Bro? How Experiences of Racial Microaggressions Affect Undergraduate African American Student Retention.” 2016. Doctoral Dissertation, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463129299.

MLA Handbook (7^th Edition):

Brezinski, Kyle Jordan. “You PC Bro? How Experiences of Racial Microaggressions Affect Undergraduate African American Student Retention.” 2016. Web. 18 Feb 2020.

Vancouver:

Brezinski KJ. You PC Bro? How Experiences of Racial Microaggressions Affect Undergraduate African American Student Retention. [Internet] [Doctoral dissertation]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463129299.

Council of Science Editors:

Brezinski KJ. You PC Bro? How Experiences of Racial Microaggressions Affect Undergraduate African American Student Retention. [Doctoral Dissertation]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463129299

University of Toledo

3. Hairston, Tiffany R. Counselor Education Students’ Perceptions of Wellness and Mental Health in African American Men: The Effects of Colorism.

Degree: PhD, Counselor Education and Supervision, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463059743

► This quantitative study was conducted to explore colorism and the clinical judgement of counselor education masters’ students. There was 155 total master’s level student counselors… (more)

Subjects/Keywords: Counseling Education; colorism, counseling, multicultural, skin tone, mental health, wellness

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APA (6^th Edition):

Hairston, T. R. (2016). Counselor Education Students’ Perceptions of Wellness and Mental Health in African American Men: The Effects of Colorism. (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463059743

Chicago Manual of Style (16^th Edition):

Hairston, Tiffany R. “Counselor Education Students’ Perceptions of Wellness and Mental Health in African American Men: The Effects of Colorism.” 2016. Doctoral Dissertation, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463059743.

MLA Handbook (7^th Edition):

Hairston, Tiffany R. “Counselor Education Students’ Perceptions of Wellness and Mental Health in African American Men: The Effects of Colorism.” 2016. Web. 18 Feb 2020.

Vancouver:

Hairston TR. Counselor Education Students’ Perceptions of Wellness and Mental Health in African American Men: The Effects of Colorism. [Internet] [Doctoral dissertation]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463059743.

Council of Science Editors:

Hairston TR. Counselor Education Students’ Perceptions of Wellness and Mental Health in African American Men: The Effects of Colorism. [Doctoral Dissertation]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463059743

University of Toledo

4. Karakas, Zeynep N. Comparative Motion and Dosimetric Analysis of Organs at Risk near Pancreatic Tumors Treated with Stereotactic Body Radiation Therapy with and without Abdominal Compression using 4DCT Datasets.

Degree: MS, Physics, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463151135

► Abdominal compression (AC) may be used to control tumor motion during radiation therapy treatments for patients with tumors near the diaphragm. Inadvertently treating with AC… (more)

▼ Abdominal compression (AC) may be used to control tumor motion during radiation therapy treatments for patients with tumors near the diaphragm. Inadvertently treating with AC using plans designed without AC, or vice versa, may result in differences in planned dose to normal tissue and target coverage. Consequences may be greatest for cases involving tumors undergoing hypofractionated, high-dose radiation treatments near radiosensitive organs directly beneath the AC belt, like pancreatic tumors treated with stereotactic body radiation therapy (SBRT). Researchers speculate that using AC in SBRT for pancreatic tumors may worsen dosimetry to surrounding organs at risk (OARs), including stomach and bowel, but publications on the use of AC during SBRT treatments of the pancreas are limited. The purpose of this study is to quantify the effects of AC on the motion and dose to OARs near pancreatic tumors with SBRT-level dose prescriptions. Motion was analyzed by measuring the deviation of the centroid of OAR contours at maximum expiration (0%) and maximum inspiration (50%) for with and without AC. The dosimetric effects of AC were investigated by examining dose to OARs for two particular scenarios: treating (1) with AC and (2) without AC, when planned otherwise. Six patients with pancreatic tumors and SBRT-level dose prescriptions (either 30 Gy or 40 Gy delivered in 5 fractions) were retrospectively evaluated in this study. Of these patients, 5 were planned with conformal arcs and 1 with IMRT. All patients had two plans and two 4D computed tomography (4DCT) datasets, one with AC and one without AC. Plans were normalized so that 95% of the PTV received 100% prescription dose; the same total MUs and MU/beam were used in both (with and without) AC plans for each patient. Four OARs—proximal and distal kidney, stomach and liver—were segmented on the 0% and 50% phases of with and without AC 4DCT datasets. Planning organ at risk (PRV) volumes were created by combining 0% and 50% contours to account for intrafractional organ motion, and were used in comparative dose analysis. Two-tailed paired t-test was used to compare motion and dose between with and without AC CTs, with differences of p<0.05 considered significant. Differences in the motion of OARs between with AC and without AC were insignificant except for liver, which was found to be significantly smaller along the superior-inferior direction with AC than without AC (7 mm vs. 10 mm, p=0.043). However, vector motion (along the lateral, anterior-posterior, and superior-inferior planes) was insignificant for all OARs. As expected, the maximum and mean dose to PRVs for both scenarios did not change for most organs except for liver, which was found to be statistically smaller with AC than without AC (Dmax=80 cGy vs. 104 cGy, p=0.045 and Dmean=1125 cGy vs. 1432 cGy, p=0.015). Also, target coverage was different between with and without AC; the 100% prescription dose to the PTV was significantly smaller with AC for both scenarios, but coverage by the 95% isodose line was relatively… Advisors/Committee Members: Pearson, David (Committee Chair).

Subjects/Keywords: Physics; Medical Imaging; Radiation; abdominal compression; pancreatic cancer; stereotactic body radiation therapy; SBRT; radiation therapy; medical physics; radiation physics; tumor motion control; 4DCT

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APA (6^th Edition):

Karakas, Z. N. (2016). Comparative Motion and Dosimetric Analysis of Organs at Risk near Pancreatic Tumors Treated with Stereotactic Body Radiation Therapy with and without Abdominal Compression using 4DCT Datasets. (Masters Thesis). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463151135

Chicago Manual of Style (16^th Edition):

Karakas, Zeynep N. “Comparative Motion and Dosimetric Analysis of Organs at Risk near Pancreatic Tumors Treated with Stereotactic Body Radiation Therapy with and without Abdominal Compression using 4DCT Datasets.” 2016. Masters Thesis, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463151135.

MLA Handbook (7^th Edition):

Karakas, Zeynep N. “Comparative Motion and Dosimetric Analysis of Organs at Risk near Pancreatic Tumors Treated with Stereotactic Body Radiation Therapy with and without Abdominal Compression using 4DCT Datasets.” 2016. Web. 18 Feb 2020.

Vancouver:

Karakas ZN. Comparative Motion and Dosimetric Analysis of Organs at Risk near Pancreatic Tumors Treated with Stereotactic Body Radiation Therapy with and without Abdominal Compression using 4DCT Datasets. [Internet] [Masters thesis]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463151135.

Council of Science Editors:

Karakas ZN. Comparative Motion and Dosimetric Analysis of Organs at Risk near Pancreatic Tumors Treated with Stereotactic Body Radiation Therapy with and without Abdominal Compression using 4DCT Datasets. [Masters Thesis]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463151135

University of Toledo

5. Ibdah, Abedl Rahman. Optical Physics of Cu(In,Ga)Se2 Solar Cells and Their Layer Components.

Degree: PhD, Physics, 2017, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1464639374

► Polycrystalline Cu(In1-xGax)Se2 (CIGS) thin film technology has emerged as a promising candidate for low cost and high performance solar modules. The efficiency of CIGS solar… (more)

▼ Polycrystalline Cu(In1-xGax)Se2 (CIGS) thin film technology has emerged as a promising candidate for low cost and high performance solar modules. The efficiency of CIGS solar cells is strongly influenced by several key factors. Among these factors include Ga composition and its profile in the absorber layer, copper content in this layer, and the solar cell multilayer structure. As a result, tools for the characterization of thin film CIGS solar cells and their layer components are becoming increasingly essential in research and manufacturing. Spectroscopic ellipsometry is a non-invasive technique that can serve as an accurate probe of component layer optical properties and multilayer structures, and can be applied as a diagnostic tool for real-time, in-line, and off-line monitoring and analysis in small area solar cell fabrication as well as in large area photovoltaics manufacturing. Implementation of spectroscopic ellipsometry provides unique insights into the properties of complete solar cell multilayer structures and their layer components. These insights can improve our understanding of solar cell structures, overcome challenges associated with solar cell fabrication, and assist in process monitoring and control on a production line.In this dissertation research, Cu(In,Ga)Se2 films with different Cu contents have been prepared by the one stage co-evaporation process. These films have been studied by real time spectroscopic ellipsometry (RTSE) during deposition, and by in-situ SE at the deposition temperature as well as at room temperature to extract the dielectric functions (e1, e2) of the thin film materials. Analytical expressions for the room temperature dielectric functions were developed, and the free parameters that describe these analytical functions were in turn expressed as functions of the Cu content. As a result of this parameterization, the dielectric function spectra (e1, e2) can be predicted for any desired composition within the range of the samples investigated. This capability was applied for mapping the structural and compositional variations of CIGS thin films deposited over a 10 cm × 10 cm substrate area.In another application presented in this dissertation, a non-invasive method utilizing ex-situ spectroscopic ellipsometry analysis has been developed and applied to determine non-destructively the Ga compositional profile in CIGS absorbers. The method employs parameterized dielectric function spectra (e1, e2) of CIGS versus Ga content to probe the compositional variation with depth into the absorber.In addition, a methodology for prediction of the external quantum efficiency (QE) including optical gains and losses for a CIGS solar cell has been developed. The methodology utilizes ex-situ spectroscopic ellipsometry analysis of a complete solar cell, with no free parameters, to deduce the multilayer solar cell structure non-invasively and simulate optical light absorption in each of the layer components. In the case of high efficiency CIGS solar cells, with minimal electronic losses, QE spectra… Advisors/Committee Members: Collins, Robert (Advisor).

Subjects/Keywords: Physics

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APA (6^th Edition):

Ibdah, A. R. (2017). Optical Physics of Cu(In,Ga)Se2 Solar Cells and Their Layer Components. (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1464639374

Chicago Manual of Style (16^th Edition):

Ibdah, Abedl Rahman. “Optical Physics of Cu(In,Ga)Se2 Solar Cells and Their Layer Components.” 2017. Doctoral Dissertation, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1464639374.

MLA Handbook (7^th Edition):

Ibdah, Abedl Rahman. “Optical Physics of Cu(In,Ga)Se2 Solar Cells and Their Layer Components.” 2017. Web. 18 Feb 2020.

Vancouver:

Ibdah AR. Optical Physics of Cu(In,Ga)Se2 Solar Cells and Their Layer Components. [Internet] [Doctoral dissertation]. University of Toledo; 2017. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1464639374.

Council of Science Editors:

Ibdah AR. Optical Physics of Cu(In,Ga)Se2 Solar Cells and Their Layer Components. [Doctoral Dissertation]. University of Toledo; 2017. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1464639374

6. Li, Shuting. Linking Contextual Drivers, Network Responses, Risk Management Capabilities, and Sustainable Outcome: Theoretical Framework and Empirical Examination.

Degree: PhD, Manufacturing and Technology Management, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1467035463

► Sustainability, which means to stay in the business ecosystem for a long time, has become critical for firms to compete in the global market during… (more)

▼ Sustainability, which means to stay in the business ecosystem for a long time, has become critical for firms to compete in the global market during the past few decades (Bansal & Hoffman, 2012). Firms involved in global supply chains desire to gain sustainable competitive advantage to win over their competitors and be successful. They benefit from their supply chains and become more and more networked with and interdependent on their supply chain partners. At the same time, they are more affected by their supply chain partners, and are faced with various challenges, including political and economic uncertainties, natural disasters, changing customer demand, shortened product lifecycles, technology disruption, severe competitions, supplier performance issues, etc. These challenges have given rise to the strategic importance of risk management capability in global supply chains (Scannell, 2012). Firms’ competitive advantage is affected by risks they encounter in their supply chain (Gimenez & Tachizawa, 2012). Failure in handling these risks can deprive focal firms’ competitive advantage in the market, and even lead firms to bankruptcy (Manuj & Mentzer, 2008).In order to reduce the impact of unexpected risks, firms are suggested to build buffer stock or set up backup production lines for unexpected supply chain disruptions. However, these strategies are not almighty for all firms in all situations. For services and products that quickly become obsolete or highly complex in terms of integral architecture, it is infeasible to build up buffer stock or prepare alternative backup production lines concerning cost competitiveness as well as product characteristics. Collaboration with suppliers is recommended in literature as one useful tool for firms to obtain risk management capabilities as the majority of the parts are increasingly made by suppliers, not manufactured in-house (Lankford & Parsa, 1999). Firms’ performance are closely related to the performance of their suppliers (Simpson & Power, 2005), and supply chain is doing much more than firms used to do. Firms need to rely on the external capabilities of their suppliers in order to gain sustainable competitive advantage. Drawing from the theoretical lenses of complexity theory, resource dependency theory, Contingency Theory, Relational View, and Resource-based View, this dissertation presents a theoretical framework to study how firms can gain sustainable competitive advantage through improving risk management capabilities, which include firms’ capabilities to manage normal risks, routine risks, and extraordinary risks. It considers supplier collaboration as firms’ network responses toward their needs to improve risk management capabilities, and explores the contextual drivers of firms’ multi-level supplier collaboration. Large scale survey data was collected from 264 U.S. manufacturing firms to test the hypothesized relationships in the proposed model using Structure Equation Modeling methodology. 18 out of 21 hypotheses were supported by data. The findings indicate… Advisors/Committee Members: Honh, Paul (Committee Chair).

Subjects/Keywords: Operations Research; Supplier collaboration, risk management capability, sustainable competitive advantage

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APA (6^th Edition):

Li, S. (2016). Linking Contextual Drivers, Network Responses, Risk Management Capabilities, and Sustainable Outcome: Theoretical Framework and Empirical Examination. (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1467035463

Chicago Manual of Style (16^th Edition):

Li, Shuting. “Linking Contextual Drivers, Network Responses, Risk Management Capabilities, and Sustainable Outcome: Theoretical Framework and Empirical Examination.” 2016. Doctoral Dissertation, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1467035463.

MLA Handbook (7^th Edition):

Li, Shuting. “Linking Contextual Drivers, Network Responses, Risk Management Capabilities, and Sustainable Outcome: Theoretical Framework and Empirical Examination.” 2016. Web. 18 Feb 2020.

Vancouver:

Li S. Linking Contextual Drivers, Network Responses, Risk Management Capabilities, and Sustainable Outcome: Theoretical Framework and Empirical Examination. [Internet] [Doctoral dissertation]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1467035463.

Council of Science Editors:

Li S. Linking Contextual Drivers, Network Responses, Risk Management Capabilities, and Sustainable Outcome: Theoretical Framework and Empirical Examination. [Doctoral Dissertation]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1467035463

University of Toledo

7. Elahi, Behin. Integrated Optimization Models and Strategies for Green Supply Chain Planning.

Degree: PhD, Industrial Engineering, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1467266039

► The main goal of this research is to present new efficient methods and optimization models to enhance the Green Supply Chain Planning (GSCP). As a… (more)

▼ The main goal of this research is to present new efficient methods and optimization models to enhance the Green Supply Chain Planning (GSCP). As a first objective, we focus on developing a novel optimization planning model in a green supply chain network consisting of suppliers, assemblers, distribution centers, and retailers. This model is subjected to various constraints which are related to the inventory and forward logistics management. We applied the proposed model for a vacuum and floor machines manufacturer case study located in the Midwestern, U.S. The main objective functions include: minimizing the costs of assembling, transporting, holding inventory at assembling sites and distribution centers, and shortage at retailers under carbon dioxide (CO2) emissions constraints throughout the logistic network; maximizing service levels and determining the acceptable service levels to meet final customers’ demands. We applied three different solution methods including a gradient-based algorithm in MATLAB “Find Minimum of Constrained nonlinear multivariable function (FminCon)”, a novel metaheuristic algorithm “Grey Wolf”, and the “Branch and Bound (B&B)” algorithm in Lingo to find optimal solutions for the proposed optimization model, which has a specific complexity. We compared the achieved optimal solutions by these methods. The case study and expanded numerical example verify whenever the parameter of the minimum service level at retailers’ sites increases or decreases, the amount of produced CO2 emissions and the total costs of the supply chain will directly correlate. It also demonstrates the trade-offs among the total costs of the supply chain network, CO2 emissions, and service levels. The achieved results reflect the efficiency of the proposed model for GSCP. As a second objective, we concentrate on revealing more information about optimal points in which performance measures of various adaptive (X ) ¯quality control charts hold their optimal minimum values. In this way, better quality control systems can be applied to detect defective parts and errors sooner, reduce the wastes, and find the related causes for the various processes involved in supply chain networks/production systems in order to achieve more effective GSCP and improve the quality control. Previous researches applied a forward viewpoint and evaluated the performance of adaptive models only for a specific and limited set of design parameters. However, in this research, we use a reverse perspective and search all possible sets of design parameters in the response space to find optimal minimum values for three performance measures, including adjusted average time until signal, average number of observations to signal, and average number of samples to signal. For this purpose, similar to recent studies, the Markov-chain approach is applied to develop performance measures. Then, a coded algorithm is proposed that explores the entire response surface and evaluate the value of each performance measure to find the optimal points. As an output, this… Advisors/Committee Members: Franchetti, Matthew (Committee Chair).

Subjects/Keywords: Environmental Management; Applied Mathematics; Artificial Intelligence; Automotive Engineering; Business Costs; Computer Science; Engineering; Environmental Engineering; Health Care; Health Care Management; Operations Research; Sustainability; Systems Design; Transportation Planning; Quality Control Charts, Supply Chain Management, Supply Chain Modeling, Mathematical Modeling, Fuzzy, VIKOR method, MCDM methods, Healthcare Supply Chain, Inventory Control, CO2 emissions, Grey Wolf Algorithm, Gradient-based algorithm

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APA (6^th Edition):

Elahi, B. (2016). Integrated Optimization Models and Strategies for Green Supply Chain Planning. (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1467266039

Chicago Manual of Style (16^th Edition):

Elahi, Behin. “Integrated Optimization Models and Strategies for Green Supply Chain Planning.” 2016. Doctoral Dissertation, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1467266039.

MLA Handbook (7^th Edition):

Elahi, Behin. “Integrated Optimization Models and Strategies for Green Supply Chain Planning.” 2016. Web. 18 Feb 2020.

Vancouver:

Elahi B. Integrated Optimization Models and Strategies for Green Supply Chain Planning. [Internet] [Doctoral dissertation]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1467266039.

Council of Science Editors:

Elahi B. Integrated Optimization Models and Strategies for Green Supply Chain Planning. [Doctoral Dissertation]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1467266039

University of Toledo

8. Khan, Kamruzzaman. NiO_x Based Device Structures.

Degree: MS, Electrical Engineering, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1469380686

► Semiconducting oxides are really important for their use in optoelectronics and photo catalytic applications. While other semiconducting oxides (e.g., ZnO, TiO₂, and SnO₂) have been… (more)

Subjects/Keywords: Electrical Engineering; Light emission, Tunneling Diode, Heterojunctions

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APA (6^th Edition):

Khan, K. (2016). NiO_x Based Device Structures. (Masters Thesis). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1469380686

Chicago Manual of Style (16^th Edition):

Khan, Kamruzzaman. “NiO_x Based Device Structures.” 2016. Masters Thesis, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1469380686.

MLA Handbook (7^th Edition):

Khan, Kamruzzaman. “NiO_x Based Device Structures.” 2016. Web. 18 Feb 2020.

Vancouver:

Khan K. NiO_x Based Device Structures. [Internet] [Masters thesis]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1469380686.

Council of Science Editors:

Khan K. NiO_x Based Device Structures. [Masters Thesis]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1469380686

9. Alsulami, Nawaf. Finite Element Analysis of Carbon Fiber Reinforced Polymer Emergency Shelters.

Degree: MS, Civil Engineering, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1469580112

► An Abstract ofFinite Element Analysis of Carbon Fiber Reinforced Polymer Emergency SheltersByNawaf AlsulamiSubmitted to the Graduate Faculty as partial fulfillment of therequirements for the Master… (more)

▼ An Abstract ofFinite Element Analysis of Carbon Fiber Reinforced Polymer Emergency SheltersByNawaf AlsulamiSubmitted to the Graduate Faculty as partial fulfillment of therequirements for the Master of Science Degree in Civil EngineeringThe University of ToledoAugust 2016This research combines novel lightweight, strong materials, sustainable mobile design solutions, and analysis of extreme wind forces on an emergency shelter. The goal of this research is to develop a versatile, lightweight, strong, and economic emergency shelter which could withstand category five hurricane forces using linear finite element analysis (FEA).The calculation takes into account that the emergency shelter should withstand wind gusts of 157 mile per hour (mph) and missile projectiles. The Main Wind Force Resisting System (MWFRS) and Components and Cladding (C&C) force are used in the wind analysis. The model for the emergency shelter includes composite sandwich panels and steel cable wires. The underlying aim of this analysis is to develop a model to predict how these different parts will react in a static state, bending to the constant or pressure load of the model.In proposing the design and analysis, two materials were taken into consideration. Expanded Polystyrene (EPS) foam core, at a thickness of five inches, and a Carbon Fiber Reinforced Polymer (CFRP) composite with a thickness of 0.047 inches on each side was used as the face sheet material. The total combined thickness of the panel is projected to be 5.09 inches. The advantage to using CFRP over conventional components are measured in vulnerability assessments of both conventional and composite wall panel systems.FEA software package ANSYS 15.0 has been utilized to carry out this design of different models of composite sandwich panel and steel cable structures under the wind pressure loading. The aim of proposing different models is to compare results.The panels of the emergency shelter were modeled by shell as well as solid elements and the results of the panels were compared. In addition, various configurations of anchored steel cables were also investigated. One of the cable configurations was analyzed only with the emergency shelter. The effect of both concentrated and pressure loads were also examined on the wall panels of the emergency shelters. Solid element was selected to model the emergency shelter for future investigation.Regarding the steel cables supporting the emergency shelter, the results demonstrated that the optimal and appropriate positioning of the pre-tensioned loading of cables had significant influence on the performance of the shelter. In the future, this research could direct future applications in relation to steel truss design and configuration. Through combining panels and steel cables, the emergency shelter could sustain the pressure load. The highest deflection detected was 3.2 inches for the Components and Cladding (C&C) model. The results recorded a deflection of 1.1 inches for the Main Wind Force Resisting System (MWFRS) model. These results… Advisors/Committee Members: Parvin, Azadeh (Committee Chair).

Subjects/Keywords: Civil Engineering

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APA (6^th Edition):

Alsulami, N. (2016). Finite Element Analysis of Carbon Fiber Reinforced Polymer Emergency Shelters. (Masters Thesis). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1469580112

Chicago Manual of Style (16^th Edition):

Alsulami, Nawaf. “Finite Element Analysis of Carbon Fiber Reinforced Polymer Emergency Shelters.” 2016. Masters Thesis, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1469580112.

MLA Handbook (7^th Edition):

Alsulami, Nawaf. “Finite Element Analysis of Carbon Fiber Reinforced Polymer Emergency Shelters.” 2016. Web. 18 Feb 2020.

Vancouver:

Alsulami N. Finite Element Analysis of Carbon Fiber Reinforced Polymer Emergency Shelters. [Internet] [Masters thesis]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1469580112.

Council of Science Editors:

Alsulami N. Finite Element Analysis of Carbon Fiber Reinforced Polymer Emergency Shelters. [Masters Thesis]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1469580112

University of Toledo

10. Akter, Taslima, Akter. Travel Behavior of a Mid-West College Community: A case Study of the University of Toledo.

Degree: MA, Geography, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1469757019

► The study investigates travel behavior of the UT Main campus community. It focuses on walking and bicycling as sustainable transportation modes. It identifies the significant… (more)

Subjects/Keywords: Transportation Planning; Urban Planning; Geography; Civil Engineering; Travel Behavior, Walking, Bicycling, Sustainable Transportation

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APA (6^th Edition):

Akter, Taslima, A. (2016). Travel Behavior of a Mid-West College Community: A case Study of the University of Toledo. (Masters Thesis). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1469757019

Chicago Manual of Style (16^th Edition):

Akter, Taslima, Akter. “Travel Behavior of a Mid-West College Community: A case Study of the University of Toledo.” 2016. Masters Thesis, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1469757019.

MLA Handbook (7^th Edition):

Akter, Taslima, Akter. “Travel Behavior of a Mid-West College Community: A case Study of the University of Toledo.” 2016. Web. 18 Feb 2020.

Vancouver:

Akter, Taslima A. Travel Behavior of a Mid-West College Community: A case Study of the University of Toledo. [Internet] [Masters thesis]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1469757019.

Council of Science Editors:

Akter, Taslima A. Travel Behavior of a Mid-West College Community: A case Study of the University of Toledo. [Masters Thesis]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1469757019

University of Toledo

11. Ahmadi, Kaveh, ahmadi. Dim Object Tracking in Cluttered Image Sequences.

Degree: PhD, Engineering, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470147209

► This research is aimed at developing efficient dim object tracking techniques in cluttered image sequences. In this dissertation, a number of new techniques are presented… (more)

▼ This research is aimed at developing efficient dim object tracking techniques in cluttered image sequences. In this dissertation, a number of new techniques are presented for image enhancement, super resolution (SR), dim object tracking, and multi-sensor object tracking. Cluttered images are impaired by noise. To deal with a mixed Gaussian and impulse noise in the image, a novel sparse coding super resolution is developed. The sparse coding has recently become a widely used tool in signal and image processing. The sparse linear combination of elements from an appropriately chosen over-complete dictionary can represent many signal patches. The proposed SR is composed of a Genetic Algorithm (GA) search step to find the optimum match from low resolution dictionary. By using GA, the proposed SR is capable of efficiently up-sampling the low resolution images while preserving the image details.Dim object tracking in a heavy clutter environment is a theoretical and technological challenge in the field of image processing. For a small dim object, conventional tracking methods fail for the lack of geometrical information. Multiple Hypotheses Testing (MHT) is one of the generally accepted methods in target tracking systems. However, processing a tree structure with a significant number of branches in MHT has been a challenging issue. Tracking high-speed objects with traditional MHT requires some presumptions which limit the capabilities of these methods. In this dissertation, a hierarchal tracking system in two levels is presented to solve this problem. For each point in the lower-level, a Multi Objective Particle Swarm Optimization (MOPSO) technique is applied to a group of consecutive frames in order to reduce the number of branches in each tracking tree. Thus, an optimum track for each moving object is obtained in a group of frames. In the upper-level, an iterative process is used to connect the matching optimum tracks of the consecutive frames based on the spatial information and fitness values. Another problem of dim object tracking is background subtraction which is difficult due to noisy environment. This dissertation presents a novel algorithm for detecting and tracking small dim targets in Infrared (IR) image sequences with low Signal to Noise Ratio (SNR) based on the frequency and spatial domain information. Using a Dual-Tree Complex Wavelet Transform (DT-CWT), a Constant False Alarm Rate (CFAR) detector is applied in the frequency domain to find potential positions of objects in a frame. Following this step, a Support Vector Machine (SVM) classification is applied to accept or reject each potential point based on the spatial domain information of the frame. The combination of the frequency and spatial domain information demonstrates the high efficiency and accuracy of the proposed method which is supported by the experimental results.One of the important tools applied in this dissertation is Particle Filter (PF). The PF, a nonparametric implementation of the Bayes filter, is commonly used to estimate the state of a… Advisors/Committee Members: Salari, Ezzatollah (Committee Chair).

Subjects/Keywords: Computer Engineering; Computer Science; Dim Object Tracking; Particle Filter; Particle Swarm Optimization; Multiple Object Tracking; Multi Sensor Object Tracking; Super Resolution

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APA (6^th Edition):

Ahmadi, Kaveh, a. (2016). Dim Object Tracking in Cluttered Image Sequences. (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470147209

Chicago Manual of Style (16^th Edition):

Ahmadi, Kaveh, ahmadi. “Dim Object Tracking in Cluttered Image Sequences.” 2016. Doctoral Dissertation, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470147209.

MLA Handbook (7^th Edition):

Ahmadi, Kaveh, ahmadi. “Dim Object Tracking in Cluttered Image Sequences.” 2016. Web. 18 Feb 2020.

Vancouver:

Ahmadi, Kaveh a. Dim Object Tracking in Cluttered Image Sequences. [Internet] [Doctoral dissertation]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470147209.

Council of Science Editors:

Ahmadi, Kaveh a. Dim Object Tracking in Cluttered Image Sequences. [Doctoral Dissertation]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470147209

12. Ke, Qi. Negative Regulation of Host Innate Immune Signaling and Response Pathways by Viral and Host Regulatory Factors.

Degree: PhD, Biology (Cell-Molecular Biology), 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470185159

► Eukaryotes have evolved intricate innate immune systems that allow rapid response to pathogens such as viruses. The initiation of innate immune responses depends on the… (more)

▼ Eukaryotes have evolved intricate innate immune systems that allow rapid response to pathogens such as viruses. The initiation of innate immune responses depends on the recognition of pathogen associated molecular patterns (PAMPs) by host germ-line encoded pattern-recognition receptors (PRRs). Activation of antiviral responses by these pathways are intended to slow or contain viral replication until the adaptive immune system can clear the infection.Viral hemorrhagic septicemia virus (VHSv) is a deadly fish rhabdovirus that infects over 50 species of freshwater and marine fishes around the world. In 2003, a new substrain of VHSv (IVb) was found in the Great Lakes region when it caused a massive die-off of many freshwater species. The VHSv genome is about 11-kb long containing six genes, and replication occurs entirely in the cytoplasm using a combination of virally encoded and host-derived factors. As with other viruses, VHSv must neutralize or evade the host innate immune response in order to survive. We have found that VHSv can inhibit IFN-stimulated antiviral responses. Interestingly, the matrix (M) protein of VHSV IVb alone can potently suppress MAVS- and IFN-induced gene expression in a dose-dependent manner. The inhibition of constitutive SV40 promoter-driven gene expression by M implicated a general effect on transcription or translation.Our study showed decreased nascent RNA levels in both VHSv-infected cells and M-transfected cells. Co-transfection of M with a tetracycline inducible reporter gene (mouse secreted embryonic alkaline phosphatase - mSEAP) resulted in potent inhibition of tet-induced mSEAP mRNA synthesis. These results suggested that M inhibited protein expression by shutting down host transcription. Indeed, ChIP studies illustrated M-dependent inhibition of RNA polymerase II (RNAP II) recruitment to a gene promoter, and decreased RNAP II CTD Ser2 phosphorylation, an indicator of transcript elongation, during VHSv infection. Therefore we hypothesize that VHSv M inhibits host transcription by preventing RNAP II recruitment or by disrupting its association with target genes. M inhibited pol I, II and III transcription in cell-based luciferase studies, but blocked RNAP II-dependent transcription most potently. When M proteins from a variety of VHSv strains and related fish rhabdoviruses were tested for potency in cell-based luciferase inhibition assays, a VHSv F1 substrain M variant was significantly less potent than M from the IVb substrain. Among the four amino acid differences between the two M protein, two of them (D62A and E181A) were demonstrated to be crucial for the transcriptional inhibitory effect of M. Reverse genetics studies to introduce these amino acid changes into the VHSv IVb backbone have been initiated to determine how they impact virulence within the context of an intact virus. These studies should enhance our understanding of M’s role in host inhibition and, ultimately, viral replication.Type I IFNs play important roles in both innate and adaptive immune responses and are highly… Advisors/Committee Members: Leaman, Douglas (Committee Chair).

Subjects/Keywords: Biology; VHSV; IFN; ZNF313; RNF114

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APA (6^th Edition):

Ke, Q. (2016). Negative Regulation of Host Innate Immune Signaling and Response Pathways by Viral and Host Regulatory Factors. (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470185159

Chicago Manual of Style (16^th Edition):

Ke, Qi. “Negative Regulation of Host Innate Immune Signaling and Response Pathways by Viral and Host Regulatory Factors.” 2016. Doctoral Dissertation, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470185159.

MLA Handbook (7^th Edition):

Ke, Qi. “Negative Regulation of Host Innate Immune Signaling and Response Pathways by Viral and Host Regulatory Factors.” 2016. Web. 18 Feb 2020.

Vancouver:

Ke Q. Negative Regulation of Host Innate Immune Signaling and Response Pathways by Viral and Host Regulatory Factors. [Internet] [Doctoral dissertation]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470185159.

Council of Science Editors:

Ke Q. Negative Regulation of Host Innate Immune Signaling and Response Pathways by Viral and Host Regulatory Factors. [Doctoral Dissertation]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470185159

University of Toledo

13. Deb Nath, Atul Prasad. Hardware-based Authentication and Security for Advanced Metering Infrastructure.

Degree: MS, Electrical Engineering, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470106841

► The power system infrastructure of the United States has embarked on a crucial transformation. The enormous change in the infrastructure ranging from private and public… (more)

▼ The power system infrastructure of the United States has embarked on a crucial transformation. The enormous change in the infrastructure ranging from private and public sectors to fossil fuel-based power plants, solar plants, and wind farms affects every entity in between. The transformation in power industry is central to national efforts to enhance efficiency, security, and reliability of electric power supply, increase integration of distributed renewable energy sources, eliminate the nation’s CO2 footprint by gradual reduction of greenhouse gas emission, and develop a 21st century smart electric grid compatible with future environmental sustainability and economic prosperity. However, the integration of Information technology (IT), Industrial Control Systems (ICS) and an advanced communication infrastructure exposes smart grid to the cyber threats associated with the networks. Consequently, cybersecurity is crucial to ensure the efficiency, reliability, and security of the evolving power grid system. Security issues pertaining to Advanced Metering Infrastructure (AMI)system has been a major concern since the advent of smart grid. Secure and reliable authentication of smart meters and data collectors connected in AMI system is of utmost importance to ensure compliance with the security requirements of smart grid. In this work, a novel authentication and key management scheme is introduced for the AMI system of smart grid using configurable Ring Oscillator Physically Unclonable Functions (ROPUFs). The scope of the design covers the communication between the utility company and the smart meter network. The scheme is based on hardware-oriented security and can be implemented on existing smart meters. In accordance with ANSI C12.18 standards, the authentication keys are classified into six different level (L0 to L5) with a varying size of 64 to 1024 bits. The cryptographic keys used in this scheme are extremely difficult to model by adversaries as each set of keys are used only once. The authentication codes are generated from configurable ROPUF response bits using the Hamming code. The design of the proposed scheme ensures fault tolerance as Ring Oscillator (RO) comparison pairs with high-frequency differences are selected to prevent bit flips. The authentication scheme is highly efficient and cost-effective in terms of latency and data storage. As a proof-of-concept, the proposed scheme is implemented on Xilinx Spartan 3E FPGA boards. In the threat model analysis, Multigene Genetic Programming (MGGP) is used to demonstrate that the scheme cannot be modeled by adversaries.Also, it is shown that the scheme is secure against common wireless sensor network attacks including eavesdropping, spoofing, invasive and Man-in-the-middle attacks. Advisors/Committee Members: Niamat, Mohammed (Advisor).

Subjects/Keywords: Electrical Engineering; Smart Grid; Cybersecuity; Advanced Metering Infrastructure; Hardware-based Security; Physically Unclonable Functions

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APA (6^th Edition):

Deb Nath, A. P. (2016). Hardware-based Authentication and Security for Advanced Metering Infrastructure. (Masters Thesis). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470106841

Chicago Manual of Style (16^th Edition):

Deb Nath, Atul Prasad. “Hardware-based Authentication and Security for Advanced Metering Infrastructure.” 2016. Masters Thesis, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470106841.

MLA Handbook (7^th Edition):

Deb Nath, Atul Prasad. “Hardware-based Authentication and Security for Advanced Metering Infrastructure.” 2016. Web. 18 Feb 2020.

Vancouver:

Deb Nath AP. Hardware-based Authentication and Security for Advanced Metering Infrastructure. [Internet] [Masters thesis]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470106841.

Council of Science Editors:

Deb Nath AP. Hardware-based Authentication and Security for Advanced Metering Infrastructure. [Masters Thesis]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470106841

University of Toledo

14. Karnati, Vijayasenareddy. Flexural Response of Reinforced Concrete Beams Using Various Cementitious Materials.

Degree: MS, Civil Engineering, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470227287

► The present study explores the effect of fly ash, recycled aggregate concrete (RAC), ultra-high strength concrete (UHSC) and self-compacting concrete (SCC) on the performance of… (more)

▼ The present study explores the effect of fly ash, recycled aggregate concrete (RAC), ultra-high strength concrete (UHSC) and self-compacting concrete (SCC) on the performance of reinforced concrete beams. The nonlinear finite element analysis using ANSYS software program was employed to model RC beams. A smeared crack approach was used for the concrete in all finite element models. The compressive and tensile strengths, modulus of elasticity, and Poisson's ratio for various cementitious materials required in the finite element analysis modeling were collected from the literature. Two different beams were considered; the first beam made with the normal strength reinforced concrete and; the second beam made with high strength SCC, were validated and compared to experimental results of existing studies in the literature. The first validated RC beam was investigated for the flexural response of concrete beams made with mixtures of 25% fly ash, ultra-high strength concrete, 50 and 100% recycled concrete aggregates, and normal strength self-compacting concrete. For the second validated high strength SCC beam, the effects of silica nanopowder and silica fumes were also studied.The results obtained from developed models of RC beam finite element analysis were compared to the experimental results and they were in good agreement. From parametric studies on the first validated beam, concrete mixtures of 25% fly ash and 50 and 100% recycled concrete aggregates, and normal strength self-compacting concrete could provide similar ultimate load and displacement capacities as the control beam. However, the RC beam with ultra-high strength concrete showed a higher gain in load capacity and lower displacement was observed at the mid-span due to additional stiffness. For the second validated high strength SCC beam, under approximately the same ultimate load level, the deflection at mid-span was lowest when silica nanopowder and silica fumes were combined. The findings contribute to providing researchers with necessary information that influence the design of RC beams using waste materials or by-products in concrete as well as high strength concrete mixtures. Advisors/Committee Members: Parvin, Azadeh (Committee Chair), Pickett, Mark (Committee Co-Chair).

Subjects/Keywords: Civil Engineering

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APA (6^th Edition):

Karnati, V. (2016). Flexural Response of Reinforced Concrete Beams Using Various Cementitious Materials. (Masters Thesis). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470227287

Chicago Manual of Style (16^th Edition):

Karnati, Vijayasenareddy. “Flexural Response of Reinforced Concrete Beams Using Various Cementitious Materials.” 2016. Masters Thesis, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470227287.

MLA Handbook (7^th Edition):

Karnati, Vijayasenareddy. “Flexural Response of Reinforced Concrete Beams Using Various Cementitious Materials.” 2016. Web. 18 Feb 2020.

Vancouver:

Karnati V. Flexural Response of Reinforced Concrete Beams Using Various Cementitious Materials. [Internet] [Masters thesis]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470227287.

Council of Science Editors:

Karnati V. Flexural Response of Reinforced Concrete Beams Using Various Cementitious Materials. [Masters Thesis]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470227287

University of Toledo

15. Groat, Lucas Matthew. The Physical Hydrogeology of the Broader Historical Irwin Prairie Wetland System.

Degree: MS, Geology, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470251155

► Wetland prairies are smaller components of a broader hydrogeologic system, therefore their hydrology is affected by surrounding sub-systems. The Historic Irwin Prairie in Holland, Ohio,… (more)

▼ Wetland prairies are smaller components of a broader hydrogeologic system, therefore their hydrology is affected by surrounding sub-systems. The Historic Irwin Prairie in Holland, Ohio, was an ideal place to study the interactions between ground water and surface water in a wetland prairie and its role within a broader hydrologic system. Historic Irwin Prairie is comprised of upland sand ridges, intermediate transitional areas, and the wet prairies themselves. The overall objective of this study was to systematically investigate the groundwater flow regime of the Irwin Prairie unconfined aquifer and the interactions with the wet prairie as groundwater flows from its recharge area of upland dunes through the transitional zone to the wet prairie around Wiregrass Lake. The head fluctuations of these systems were monitored during the transition from fall into spring to observe the effects of changes in groundwater recharge and discharge on the groundwater/surface-water interactions. Groundwater flow regimes and fluxes were quantified using fields of piezometers in each of the subsystems, monitoring head or water table elevations, and performing pocket pumping tests to calculate hydraulic conductivity. Darcy’s Law was used to quantify the groundwater fluxes, and discharge. Water-table rise during precipitation events and specific yields provide the information used to calculate episodic recharge. Diurnal fluctuations during water table recession are used to calculate the effects of evapotranspiration from the groundwater in the three subsystems. These data were used to quantify groundwater/ surface-water interactions, as well as map flow paths within the subsystems and the larger system as a whole.The aquifer in the Upland Study Area aquifer was discharge-dominant from September 2015 through November 2015, then recharge dominant from December 2015 through May 2016. The Upland Study Area consistently discharged groundwater in the Northwest direction towards the Transitional Study Area. The Transitional Study Area consistently discharged groundwater to the west towards the wet prairie and drainage ditch parallel to Eber Road. This consistent groundwater discharge to the ditch indicates that, while the Transitional Area does receive recharge from the uplands and discharges groundwater to the adjacent wet prairie, the drainage ditch and pond hydraulically disconnect the Transitional Area from the Wiregrass Lake Area. Wiregrass Lake recharges surrounding groundwater during dry summer months. During wetter periods this flow reverses, and Wiregrass Lake is recharged by groundwater. Drainage ditches to the east and west of the Wiregrass Lake Study Area suppressed the elevation of the water table throughout the course of the study. Advisors/Committee Members: Martin-Hayden, James (Committee Chair).

Subjects/Keywords: Environmental Geology; Geology; Hydrology

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APA (6^th Edition):

Groat, L. M. (2016). The Physical Hydrogeology of the Broader Historical Irwin Prairie Wetland System. (Masters Thesis). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470251155

Chicago Manual of Style (16^th Edition):

Groat, Lucas Matthew. “The Physical Hydrogeology of the Broader Historical Irwin Prairie Wetland System.” 2016. Masters Thesis, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470251155.

MLA Handbook (7^th Edition):

Groat, Lucas Matthew. “The Physical Hydrogeology of the Broader Historical Irwin Prairie Wetland System.” 2016. Web. 18 Feb 2020.

Vancouver:

Groat LM. The Physical Hydrogeology of the Broader Historical Irwin Prairie Wetland System. [Internet] [Masters thesis]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470251155.

Council of Science Editors:

Groat LM. The Physical Hydrogeology of the Broader Historical Irwin Prairie Wetland System. [Masters Thesis]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470251155

16. Lamichhane, Manoj. Levi Subalgebras of gl(5,R).

Degree: PhD, Mathematics, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470255305

► This dissertation concerns Levi subalgebras of gl(5, R). All the simple subalge- bras of gl(5, R) are found together with their representations comprising seventeen in… (more)

Subjects/Keywords: Mathematics

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APA (6^th Edition):

Lamichhane, M. (2016). Levi Subalgebras of gl(5,R). (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470255305

Chicago Manual of Style (16^th Edition):

Lamichhane, Manoj. “Levi Subalgebras of gl(5,R).” 2016. Doctoral Dissertation, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470255305.

MLA Handbook (7^th Edition):

Lamichhane, Manoj. “Levi Subalgebras of gl(5,R).” 2016. Web. 18 Feb 2020.

Vancouver:

Lamichhane M. Levi Subalgebras of gl(5,R). [Internet] [Doctoral dissertation]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470255305.

Council of Science Editors:

Lamichhane M. Levi Subalgebras of gl(5,R). [Doctoral Dissertation]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470255305

University of Toledo

17. Alipourasiabi, Niloofar. Modeling of Controlled Drug Delivery from a Chitosan Microparticle.

Degree: MS, Chemical Engineering, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470352546

► Nowadays, advanced controlled drug delivery systems have been attracted the pharmaceutical research studies. As several experiments have to be done for pharmaceutical approaches, mathematical modeling… (more)

Subjects/Keywords: Chemical Engineering; Biomedical Engineering

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APA (6^th Edition):

Alipourasiabi, N. (2016). Modeling of Controlled Drug Delivery from a Chitosan Microparticle. (Masters Thesis). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470352546

Chicago Manual of Style (16^th Edition):

Alipourasiabi, Niloofar. “Modeling of Controlled Drug Delivery from a Chitosan Microparticle.” 2016. Masters Thesis, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470352546.

MLA Handbook (7^th Edition):

Alipourasiabi, Niloofar. “Modeling of Controlled Drug Delivery from a Chitosan Microparticle.” 2016. Web. 18 Feb 2020.

Vancouver:

Alipourasiabi N. Modeling of Controlled Drug Delivery from a Chitosan Microparticle. [Internet] [Masters thesis]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470352546.

Council of Science Editors:

Alipourasiabi N. Modeling of Controlled Drug Delivery from a Chitosan Microparticle. [Masters Thesis]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470352546

University of Toledo

18. Barnawi, Abdulwasa. Hybrid PV/Wind Power Systems Incorporating Battery Storage and Considering the Stochastic Nature of Renewable Resources.

Degree: PhD, Electrical Engineering, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470357709

► Hybrid power generation system and distributed generation technology are attracting more investments due to the growing demand for energy nowadays and the increasing awareness regarding… (more)

▼ Hybrid power generation system and distributed generation technology are attracting more investments due to the growing demand for energy nowadays and the increasing awareness regarding emissions and their environmental impacts such as global warming and pollution. The price fluctuation of crude oil is an additional reason for the leading oil producing countries to consider renewable resources as an alternative. Saudi Arabia as the top oil exporter country in the word announced the "Saudi Arabia Vision 2030" which is targeting to generate 9.5 GW of electricity from renewable resources. Two of the most promising renewable technologies are wind turbines (WT) and photovoltaic cells (PV). The integration or hybridization of photovoltaics and wind turbines with battery storage leads to higher adequacy and redundancy for both autonomous and grid connected systems.This study presents a method for optimal generation unit planning by installing a proper number of solar cells, wind turbines, and batteries in such a way that the net present value (NPV) is minimized while the overall system redundancy and adequacy is maximized. A new renewable fraction technique (RFT) is used to perform the generation unit planning. RFT was tested and validated with particle swarm optimization and HOMER Pro under the same conditions and environment.Renewable resources and load randomness and uncertainties are considered. Both autonomous and grid-connected system designs were adopted in the optimal generation units planning process. An uncertainty factor was designed and incorporated in both autonomous and grid connected system designs. In the autonomous hybrid system design model, the strategy including an additional amount of operation reserve as a percent of the hourly load was considered to deal with resource uncertainty since the battery storage system is the only backup. While in the grid-connected hybrid system design model, demand response was incorporated to overcome the impact of uncertainty and perform energy trading between the hybrid grid utility and main grid utility in addition to the designed uncertainty factor. After the generation unit planning was carried out and component sizing was determined, adequacy evaluation was conducted by calculating the loss of load expectation adequacy index for different contingency criteria considering probability of equipment failure. Finally, a microgrid planning was conducted by finding the proper size and location to install distributed generation units in a radial distribution network. Advisors/Committee Members: Wang, Lingfeng (Committee Chair).

Subjects/Keywords: Electrical Engineering; Energy; PV and Wind; net present value; optimal sizing; particle swarm optimization; electricity pricing; energy management; deferrable load scheduling; imputed demand; adequacy evaluation

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APA (6^th Edition):

Barnawi, A. (2016). Hybrid PV/Wind Power Systems Incorporating Battery Storage and Considering the Stochastic Nature of Renewable Resources. (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470357709

Chicago Manual of Style (16^th Edition):

Barnawi, Abdulwasa. “Hybrid PV/Wind Power Systems Incorporating Battery Storage and Considering the Stochastic Nature of Renewable Resources.” 2016. Doctoral Dissertation, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470357709.

MLA Handbook (7^th Edition):

Barnawi, Abdulwasa. “Hybrid PV/Wind Power Systems Incorporating Battery Storage and Considering the Stochastic Nature of Renewable Resources.” 2016. Web. 18 Feb 2020.

Vancouver:

Barnawi A. Hybrid PV/Wind Power Systems Incorporating Battery Storage and Considering the Stochastic Nature of Renewable Resources. [Internet] [Doctoral dissertation]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470357709.

Council of Science Editors:

Barnawi A. Hybrid PV/Wind Power Systems Incorporating Battery Storage and Considering the Stochastic Nature of Renewable Resources. [Doctoral Dissertation]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470357709

University of Toledo

19. Leigh, Laurasona. Behavioral and Environmental Attributes of Ebola Epidemic in West Africa and United States Emergency Nurses’ Motivation to Protect Themselves against Ebola Infection.

Degree: PhD, Health Education, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470411786

► Introduction: The 2014 Ebola outbreak was considered one of the worst, with approximately 15,217 confirmed cases and 11,301 deaths. This outbreak devastated several places in… (more)

▼ Introduction: The 2014 Ebola outbreak was considered one of the worst, with approximately 15,217 confirmed cases and 11,301 deaths. This outbreak devastated several places in Africa and unexpectedly affected countries outside of the African region such as the United States. Thus far, there is limited knowledge concerning how to prevent the spread of this highly contagious and deadly disease that has claimed between 50% and 90% of the infected. While there has been substantial research conducted on the biological and epidemiological features of the virus, there is limited research on how an individual’s health behavior contributes to the spread of the virus. Additionally, due to the sporadic occurrence of this virus, there is insufficient research regarding United States healthcare professionals and how they give care to possible patients with an Ebola infection and what they consider as their motivation to protect themselves when giving care to these patients. Methods: For the first of two related studies, an ecological analysis was conducted using data provided from three English speaking West African countries: Liberia, Nigeria and Sierra Leone. Each country’s Ministry of Health compiled an Ebola infection daily report on the confirmed, probable and suspected cases and deaths within each district. The possible determinants of transmission were compiled from surveys conducted by each country’s Ministry of Health with assistance from credible international agencies. Spearman Rho Correlation and Stepwise Linear Regression were conducted to determine the possible determinants associated with the spread and transmission of the Ebola virus. For the second study, a non-experimental quantitative analysis using a descriptive cross sectional design was used to guide the study. A modified Protection Motivation Theory was used to develop the instrument to survey randomly selected emergency nurses whom are members of the Emergency Nurses Association. Spearman Rho Correlation, Stepwise Linear Regression and a Path Analysis were conducted for data analysis. Results: The findings for the first study indicate that four outcome variables (initial confirmed cases, initial suspected cases, initial probable deaths and latest confirmed deaths) provided meaningful results. Each variable was associated with multiple behavioral, environmental and social factors. These factors were significant predictors of initial confirmed cases with 65% of the variance, initial suspected cases with 73% of the variance, latest confirmed deaths with 74% of the variances and initial probable deaths with 96% of the variance. The results from the second study demonstrated a difference among emergency nurses’ protection motivation and other psychological variables. The outcome variable, protection motivation, was divided into proactive protection motivation and passive protection motivation. The findings revealed that proactive protection motivation is highly and positively correlated with response efficacy (.26, p<.01), self-efficacy (.18, p<.01), outcome… Advisors/Committee Members: Sheu, Jiunn-Jye (Committee Chair).

Subjects/Keywords: Health Education; Nursing; Public Health; Epidemiology; Ebola virus disease, Ebola infection control, Emergency Nurses, West Africa, Protection Motivation Theory, Ecological Model

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APA (6^th Edition):

Leigh, L. (2016). Behavioral and Environmental Attributes of Ebola Epidemic in West Africa and United States Emergency Nurses’ Motivation to Protect Themselves against Ebola Infection. (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470411786

Chicago Manual of Style (16^th Edition):

Leigh, Laurasona. “Behavioral and Environmental Attributes of Ebola Epidemic in West Africa and United States Emergency Nurses’ Motivation to Protect Themselves against Ebola Infection.” 2016. Doctoral Dissertation, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470411786.

MLA Handbook (7^th Edition):

Leigh, Laurasona. “Behavioral and Environmental Attributes of Ebola Epidemic in West Africa and United States Emergency Nurses’ Motivation to Protect Themselves against Ebola Infection.” 2016. Web. 18 Feb 2020.

Vancouver:

Leigh L. Behavioral and Environmental Attributes of Ebola Epidemic in West Africa and United States Emergency Nurses’ Motivation to Protect Themselves against Ebola Infection. [Internet] [Doctoral dissertation]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470411786.

Council of Science Editors:

Leigh L. Behavioral and Environmental Attributes of Ebola Epidemic in West Africa and United States Emergency Nurses’ Motivation to Protect Themselves against Ebola Infection. [Doctoral Dissertation]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470411786

University of Toledo

20. Debnath, Jayanta Kumar. Development of Scheduling, Path Planning and Resource Management Algorithms for Robotic Fully-automated and Multi-story Parking Structure.

Degree: MS, Electrical Engineering, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470399189

► This thesis demonstrates development of a complete suite of path planning, elevator scheduling and resource allocation algorithms to manage multiple concurrent requests, in real time… (more)

▼ This thesis demonstrates development of a complete suite of path planning, elevator scheduling and resource allocation algorithms to manage multiple concurrent requests, in real time and in a dynamic context, for storage and retrieval of vehicles loaded onto robotic carts for a robotic, fully-automated, multi-story and driving-free parking structure. The objective is to utilize, for parking, the available spaces across the floors of a parking structure that does not have any driving lanes at a much higher percentage rate which is greater than or equal to 80% in all cases while keeping the customer waiting times at minimum. Path search and planning employs the incremental informed search algorithm D* Lite with domain-specific heuristics, and the uninformed search algorithm Uniform Cost Search in a completely-automated framework. An optimization algorithm based on nested partitions and genetic algorithm is adapted for scheduling of a group of elevators in the multi-story parking structure environment. A small percentage of parking spots are reserved as “blank cells” to facilitate movement of roller beds carrying a vehicle to its storage or retrieval destination. Resource allocation and management is accomplished using statistical models employing queueing theory for structural resources such as blank cells and elevators while minimizing customer waiting time. Lower bounds on the number of elevators needed for a specific floor count and number of parking spaces per floor are derived using statistical modeling. Multiple vehicles are considered to be potentially moving from one parking space to another by roller bed pallets moving along tracks mounted on the surface of each storage cell. A software simulator based on multi-threaded Java code and unified modeling language was developed to perform empirical testing and validation of the performance of the proposed integration framework for the set of path search, elevator scheduling and resource management algorithms. A comprehensive set of test cases where the number of floors in the parking structure, the number of cells on each floor, the number of elevators and the percentage of blank cells are parameters for exploration, are generated applying the constraints that the utilization of the parking structure has to be equal or greater than 80%, and during the “morning/evening rush hours” the capacity of parking lot needs to be fully utilized within a two clock-hour period. A typical business day scenario where morning rush hour that fills the parking lot to its maximum capacity at its conclusion and the evening rush hour that nearly empties the entire parking lot from a fully-occupied state was considered. Multiple concurrent and combination of storage and retrieval requests were generated assuming Poisson distributed customer arrivals. The performance effect of immobilized carts that form fixed obstacles on the parking floor was considered. Performance of the proposed system was assessed and evaluated using a number of performance metrics that included customer waiting… Advisors/Committee Members: Serpen, Gursel (Committee Chair).

Subjects/Keywords: Artificial Intelligence; fully-automated robotic parking; elevator scheduling; real-time; optimal; genetic algorithm; queuing theory; nested partition; UML; simulation software design; multithreaded; path planning; scheduling; optimization

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APA (6^th Edition):

Debnath, J. K. (2016). Development of Scheduling, Path Planning and Resource Management Algorithms for Robotic Fully-automated and Multi-story Parking Structure. (Masters Thesis). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470399189

Chicago Manual of Style (16^th Edition):

Debnath, Jayanta Kumar. “Development of Scheduling, Path Planning and Resource Management Algorithms for Robotic Fully-automated and Multi-story Parking Structure.” 2016. Masters Thesis, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470399189.

MLA Handbook (7^th Edition):

Debnath, Jayanta Kumar. “Development of Scheduling, Path Planning and Resource Management Algorithms for Robotic Fully-automated and Multi-story Parking Structure.” 2016. Web. 18 Feb 2020.

Vancouver:

Debnath JK. Development of Scheduling, Path Planning and Resource Management Algorithms for Robotic Fully-automated and Multi-story Parking Structure. [Internet] [Masters thesis]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470399189.

Council of Science Editors:

Debnath JK. Development of Scheduling, Path Planning and Resource Management Algorithms for Robotic Fully-automated and Multi-story Parking Structure. [Masters Thesis]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470399189

University of Toledo

21. Law, Wen Jing. Ectopic Expression in Remodeled C. elegans: A Platform for Target Identification, Anthelmintic Screening and Receptor Deorphanization.

Degree: PhD, Biology (Cell-Molecular Biology), 2015, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1450454268

► Nematode infections cause significant morbidity and have a devastating global economic impact. Anthelmintic development has been hampered by lack of cost-effective screening platforms due, in… (more)

▼ Nematode infections cause significant morbidity and have a devastating global economic impact. Anthelmintic development has been hampered by lack of cost-effective screening platforms due, in part, to the absence of nematode cell lines, difficulties in maintaining parasitic nematodes in laboratory, and the costs of in vivo screening. In the present study we exploited the many advantages of the C. elegans model system and developed a high-throughput screening platform to identify selective nematode monoamine receptor agonists in genetically-engineered “chimeric” C. elegans as lead compound for anthelmintic development. Previously, we and others have demonstrated that exogenous monoamines, such as 5-HT, dopamine and tyramine (TA), each paralyzed the free-living nematode, C. elegans and, where examined, parasitic nematodes. Specifically, we have heterologously expressed 5-HT and TA receptors from a variety of organisms in the motor neurons and body wall muscle of different C. elegans receptor mutants, at sites yielding robust locomotory phenotypes, including paralysis, upon agonist stimulation. This approach includes nematode-specific accessory proteins and cuticle, while maintaining the unique pharmacologies of receptors from individual parasites. Using this approach, we have identified selective receptor agonists for both the nematode and human 5-HT1 receptors. Similarly, we have expressed novel nematode monoamine-gated Cl- channels in motor neurons and body wall muscle and validated their participation in a robust monoamine-mediated paralysis at both sites. In addition, we have modified the incubation system by varying incubation conditions and genetic backgrounds to dramatically increase the permeability of the chimeric animals, allowing much less drug to be used for screening. In fact, using this approach it may be possible to modify the cuticular permeability of C. elegans to mimic individual parasites species.Finally, we have used the C. elegans model to tentatively identify the receptor for a FMRFamide neuropeptide, PF4 (KPNFIRFamide). Previous workers have demonstrated that PF4 causes a rapid, flaccid paralysis when injected into Ascaris suum and induces a rapid, Cl – dependent hyper-polarization in denervated A. suum muscle strips, suggesting that PF4 opens a Cl- channel on nematode muscle that has the potential to cause hyper-polarization and flaccid paralysis and may be a potentially important target for anthelmintic development (Maule et al., 1995a; Maule et al., 1995b; Holden-Dye et al., 1997; Purcell et al., 2002; Reintiz et al., 2011). The C. elegans and A. suum flp-1/af26 genes encode peptides similar (or identical) to PF4, suggesting a potential conservation in both ligand and its receptor. To this end, we identified a group of sensory-mediated locomotory phenotypes in flp-1 null animals and animals over-expressing flp-1. The C. elegans genome contains a number of genes encoding putative ligand-gated Cl- channels. We reasoned that null and XS alleles of the gene encoding the putative PF4 receptor(s)… Advisors/Committee Members: Komuniecki, Richard (Advisor).

Subjects/Keywords: Biology; Parasitology; anthelmintic screen; monoamines; C elegans; ectopic expression

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APA (6^th Edition):

Law, W. J. (2015). Ectopic Expression in Remodeled C. elegans: A Platform for Target Identification, Anthelmintic Screening and Receptor Deorphanization. (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1450454268

Chicago Manual of Style (16^th Edition):

Law, Wen Jing. “Ectopic Expression in Remodeled C. elegans: A Platform for Target Identification, Anthelmintic Screening and Receptor Deorphanization.” 2015. Doctoral Dissertation, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1450454268.

MLA Handbook (7^th Edition):

Law, Wen Jing. “Ectopic Expression in Remodeled C. elegans: A Platform for Target Identification, Anthelmintic Screening and Receptor Deorphanization.” 2015. Web. 18 Feb 2020.

Vancouver:

Law WJ. Ectopic Expression in Remodeled C. elegans: A Platform for Target Identification, Anthelmintic Screening and Receptor Deorphanization. [Internet] [Doctoral dissertation]. University of Toledo; 2015. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1450454268.

Council of Science Editors:

Law WJ. Ectopic Expression in Remodeled C. elegans: A Platform for Target Identification, Anthelmintic Screening and Receptor Deorphanization. [Doctoral Dissertation]. University of Toledo; 2015. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1450454268

University of Toledo

22. Shepherd, Kathleen Kay. The Influence of the College Environment on Community College Remedial Mathematics Instructors' Use of Best Practices in Remedial Mathematics.

Degree: PhD, Higher Education, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1451683545

► An estimated 41% of the more than 11 million students who attend a community college need remediation, with remedial mathematics the most common course students… (more)

Subjects/Keywords: Community College Education; Mathematics Education; community college remedial mathematics; community college developmental mathematics; best practices community college teaching; developmental theory

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APA (6^th Edition):

Shepherd, K. K. (2016). The Influence of the College Environment on Community College Remedial Mathematics Instructors' Use of Best Practices in Remedial Mathematics. (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1451683545

Chicago Manual of Style (16^th Edition):

Shepherd, Kathleen Kay. “The Influence of the College Environment on Community College Remedial Mathematics Instructors' Use of Best Practices in Remedial Mathematics.” 2016. Doctoral Dissertation, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1451683545.

MLA Handbook (7^th Edition):

Shepherd, Kathleen Kay. “The Influence of the College Environment on Community College Remedial Mathematics Instructors' Use of Best Practices in Remedial Mathematics.” 2016. Web. 18 Feb 2020.

Vancouver:

Shepherd KK. The Influence of the College Environment on Community College Remedial Mathematics Instructors' Use of Best Practices in Remedial Mathematics. [Internet] [Doctoral dissertation]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1451683545.

Council of Science Editors:

Shepherd KK. The Influence of the College Environment on Community College Remedial Mathematics Instructors' Use of Best Practices in Remedial Mathematics. [Doctoral Dissertation]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1451683545

University of Toledo

23. Karki Gautam, Laxmi. Spectroscopic Ellipsometry Studies of Thin Film Si:H Materials in Photovoltaic Applications from Infrared to Ultraviolet.

Degree: PhD, Physics, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1451955209

► Optimization of thin film photovoltaics (PV) relies on the capability for characterizing the optoelectronic and structural properties of each layer in the device over large… (more)

▼ Optimization of thin film photovoltaics (PV) relies on the capability for characterizing the optoelectronic and structural properties of each layer in the device over large areas and correlating these properties with device performance. This work builds heavily upon that done previously by us, our collaborators, and other researchers. It provides the next step in data analyses, particularly that involving study of films in device configurations maintaining the utmost sensitivity within those same device structures. In this Dissertation, the component layers of thin film hydrogenated silicon (Si:H) solar cells on rigid substrate materials have been studied by real time spectroscopic ellipsometry (RTSE) and ex situ spectroscopic ellipsometry (SE). Growth evolution diagrams has been used to guide deposition of materials with good optoelectronic properties in the actual hydrogenated amorphous silicon (a-Si:H) PV device configuration. The nucleation and evolution of crystallites forming from the amorphous phase were studied using near infrared to ultraviolet spectroscopic ellipsometry in situ, during growth for films prepared as a function of hydrogen to reactive gas flow ratio R = [H2] /{[SiH4] + [Si2H6]. Furthermore, the major challenge in Si:H manufacturing is thatquantitative analysis, characterization, and control of the relative nanocrystalline and amorphous volume fractions within mixed-phase films were covered during these studies.In conjunction with higher photon energy measurements, the presence and relative absorption strength of silicon-hydrogen infrared modes were measured by infrared extended ellipsometry measurements to gain some insight into chemical bonding. Structural and optical models have been developed for the back reflector (BR) structure consisting of sputtered undoped zinc oxide (ZnO) on top of silver (Ag) coated glass substrates. Characterization of the free-carrier absorption properties in Ag and the interface formed when Ag is over-coated with ZnO were also studied by infrared extended spectroscopic ellipsometry. Measurements ranging from 0.04 to 5 eV were used to extract layer thicknesses, composition, and optical response in the form of complex dielectric function spectra (e = e1 + ie2) for undoped a-Si:H layers in a substrate n-i-p a-Si:H based PV device structure and on TCO coated glass for p-i-n configurations. Advisors/Committee Members: Podraza, Nikolas J. (Committee Chair).

Subjects/Keywords: Physics; Plasma Physics; Solid State Physics

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APA (6^th Edition):

Karki Gautam, L. (2016). Spectroscopic Ellipsometry Studies of Thin Film Si:H Materials in Photovoltaic Applications from Infrared to Ultraviolet. (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1451955209

Chicago Manual of Style (16^th Edition):

Karki Gautam, Laxmi. “Spectroscopic Ellipsometry Studies of Thin Film Si:H Materials in Photovoltaic Applications from Infrared to Ultraviolet.” 2016. Doctoral Dissertation, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1451955209.

MLA Handbook (7^th Edition):

Karki Gautam, Laxmi. “Spectroscopic Ellipsometry Studies of Thin Film Si:H Materials in Photovoltaic Applications from Infrared to Ultraviolet.” 2016. Web. 18 Feb 2020.

Vancouver:

Karki Gautam L. Spectroscopic Ellipsometry Studies of Thin Film Si:H Materials in Photovoltaic Applications from Infrared to Ultraviolet. [Internet] [Doctoral dissertation]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1451955209.

Council of Science Editors:

Karki Gautam L. Spectroscopic Ellipsometry Studies of Thin Film Si:H Materials in Photovoltaic Applications from Infrared to Ultraviolet. [Doctoral Dissertation]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1451955209

University of Toledo

24. Ugwumba, Miracle C. Reliability Assessment Using Bootstrapping and Identification of Point of Diminishing Returns.

Degree: MS, Mechanical Engineering, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452080021

► The safety of dynamic systems under random vibrations is usually quantified by using probabilistic methods. This is because of the inherent randomness associated with some… (more)

Subjects/Keywords: Engineering; Monte Carlo Simulation, Separable Monte Carlo Simulation, Bootstrapping

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APA (6^th Edition):

Ugwumba, M. C. (2016). Reliability Assessment Using Bootstrapping and Identification of Point of Diminishing Returns. (Masters Thesis). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452080021

Chicago Manual of Style (16^th Edition):

Ugwumba, Miracle C. “Reliability Assessment Using Bootstrapping and Identification of Point of Diminishing Returns.” 2016. Masters Thesis, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452080021.

MLA Handbook (7^th Edition):

Ugwumba, Miracle C. “Reliability Assessment Using Bootstrapping and Identification of Point of Diminishing Returns.” 2016. Web. 18 Feb 2020.

Vancouver:

Ugwumba MC. Reliability Assessment Using Bootstrapping and Identification of Point of Diminishing Returns. [Internet] [Masters thesis]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452080021.

Council of Science Editors:

Ugwumba MC. Reliability Assessment Using Bootstrapping and Identification of Point of Diminishing Returns. [Masters Thesis]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452080021

University of Toledo

25. Starkey, Carl A. A Spatially Resolved Survey of the Mid-Infrared Aromatic Features in Nearby Galaxies.

Degree: PhD, Physics, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452253785

► Mid-infrared spectra of almost all astronomical objects reveal a rich array of emission features largely attributed to the IR florescence of polycyclic aromatic hydrocarbons (PAHs).… (more)

Subjects/Keywords: Astrophysics; Astronomy; Physics; infrared; spectroscopy; PAH; PAHFIT

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APA (6^th Edition):

Starkey, C. A. (2016). A Spatially Resolved Survey of the Mid-Infrared Aromatic Features in Nearby Galaxies. (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452253785

Chicago Manual of Style (16^th Edition):

Starkey, Carl A. “A Spatially Resolved Survey of the Mid-Infrared Aromatic Features in Nearby Galaxies.” 2016. Doctoral Dissertation, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452253785.

MLA Handbook (7^th Edition):

Starkey, Carl A. “A Spatially Resolved Survey of the Mid-Infrared Aromatic Features in Nearby Galaxies.” 2016. Web. 18 Feb 2020.

Vancouver:

Starkey CA. A Spatially Resolved Survey of the Mid-Infrared Aromatic Features in Nearby Galaxies. [Internet] [Doctoral dissertation]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452253785.

Council of Science Editors:

Starkey CA. A Spatially Resolved Survey of the Mid-Infrared Aromatic Features in Nearby Galaxies. [Doctoral Dissertation]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452253785

University of Toledo

26. Katsanos, Evgeniya. Why UToledo? A Study of the Key Factors Influencing the College Choice of International Undergraduate Students and Their Decision to Enroll at The University of Toledo.

Degree: Master of Liberal Studies, Liberal Studies, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452083851

► In light of the benefits associated with the internationalization of higher education, multiple universities, states, and countries have made it a strategic imperative to attract… (more)

▼ In light of the benefits associated with the internationalization of higher education, multiple universities, states, and countries have made it a strategic imperative to attract international students “in pursuit of development, growth, and sustainability” (Ross et al., 2013, p. 219). Despite the growing numbers of internationally mobile tertiary students, and of international students coming to the U.S. to pursue their higher education, researchers concur that we still know very little about the college choice process of international students. The purpose of the study was to identify the factors affecting international undergraduate students’ process of college selection at the information gathering stage, as well as the factors that influence their ultimate decision to enroll at a particular higher education institution. The main findings of this study align with the existing research on the college choice process. They suggests that the selection of a higher education institution is similar to purchasing a high-involvement, high-investment, and high-risk service and represents a complex, multi-stage process that with various factors influencing students’ decisions at its every step. International prospective students face an even greater challenge as they are deciding on the destination country of their school as well. Researchers have identified a relatively consistent set of institutional characteristics that affects students’ college choice: institutional rankings and reputation, availability of desired course, program reputation, costs of attendance, facilities, and location, to name a few (Hemsley-Brown & Oplatka, 2015; Ortiz, 2015; Han, 2014; Obermeit, 2012; Rudd et al., 2012; Szekeres, 2010). This study confirmed that, depending on individual students’ characteristics, such as country of origin, source of funding and program of study, various groups of prospective international undergraduate students experience different influences and are affected by different factors as they inquire about, research, and evaluate their college options. However, cost of study, program availability, and country of origin emerged as the underlining factors in international student college selection. The results of this study point out to the feasibility of student segmentation for effective marketing of higher education institutions based on various qualities relevant to different student populations (Han, 2014; Hobsons, 2014; Choudaha et al., 2012). In addition, the present study highlights the importance of broader internationalization efforts of colleges and universities, namely exchange programs and partnerships, in increasing institutional reputation and visibility, which, in turn, are seen as the main sources for attracting more international students to their campuses. Advisors/Committee Members: Slantcheva-Durst, Snejana (Committee Chair).

Subjects/Keywords: Higher Education; Higher Education Administration; international students, higher education, college choice factors, internationalization, international student recruitment

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APA (6^th Edition):

Katsanos, E. (2016). Why UToledo? A Study of the Key Factors Influencing the College Choice of International Undergraduate Students and Their Decision to Enroll at The University of Toledo. (Masters Thesis). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452083851

Chicago Manual of Style (16^th Edition):

Katsanos, Evgeniya. “Why UToledo? A Study of the Key Factors Influencing the College Choice of International Undergraduate Students and Their Decision to Enroll at The University of Toledo.” 2016. Masters Thesis, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452083851.

MLA Handbook (7^th Edition):

Katsanos, Evgeniya. “Why UToledo? A Study of the Key Factors Influencing the College Choice of International Undergraduate Students and Their Decision to Enroll at The University of Toledo.” 2016. Web. 18 Feb 2020.

Vancouver:

Katsanos E. Why UToledo? A Study of the Key Factors Influencing the College Choice of International Undergraduate Students and Their Decision to Enroll at The University of Toledo. [Internet] [Masters thesis]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452083851.

Council of Science Editors:

Katsanos E. Why UToledo? A Study of the Key Factors Influencing the College Choice of International Undergraduate Students and Their Decision to Enroll at The University of Toledo. [Masters Thesis]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452083851

University of Toledo

27. Harter, James. The Impact of Tuition Discounting on Net Tuition Revenue at Private Liberal Arts Colleges.

Degree: PhD, Higher Education, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452093373

► Tuition discounting has been a long standing practice among private colleges and universities. The scholarly research devoted to this topic over the past forty or… (more)

Subjects/Keywords: Higher Education; tuition discounting; private liberal arts colleges; institutional discount rate; funded discount rate; unfunded tuition discount rate; net tuition revenue

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APA (6^th Edition):

Harter, J. (2016). The Impact of Tuition Discounting on Net Tuition Revenue at Private Liberal Arts Colleges. (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452093373

Chicago Manual of Style (16^th Edition):

Harter, James. “The Impact of Tuition Discounting on Net Tuition Revenue at Private Liberal Arts Colleges.” 2016. Doctoral Dissertation, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452093373.

MLA Handbook (7^th Edition):

Harter, James. “The Impact of Tuition Discounting on Net Tuition Revenue at Private Liberal Arts Colleges.” 2016. Web. 18 Feb 2020.

Vancouver:

Harter J. The Impact of Tuition Discounting on Net Tuition Revenue at Private Liberal Arts Colleges. [Internet] [Doctoral dissertation]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452093373.

Council of Science Editors:

Harter J. The Impact of Tuition Discounting on Net Tuition Revenue at Private Liberal Arts Colleges. [Doctoral Dissertation]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452093373

University of Toledo

28. Huelskamp, Amelia Catherine. A National Assessment of the Impact of the Institutes for Higher Education Academy on School Health Faculty.

Degree: PhD, Health Education, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452199276

► Purpose. The purpose of this study was to evaluate the impact of the Institutes for Higher Education (IHE) Academy, a professional conference intended to train… (more)

▼ Purpose. The purpose of this study was to evaluate the impact of the Institutes for Higher Education (IHE) Academy, a professional conference intended to train school health education faculty in the use of online resources available through the Centers for Disease Control (CDC), and to facilitate the integration of these resources into school health teacher preparation programs. Methods. This was a mixed methods study with two data collection phases. The quantitative phase involved the use of an online survey designed to determine the number of changes made within participants’ school health teacher preparation programs. All school health faculty members who attended an IHE Academy were recruited via e-mail to participate (N = 151). After three rounds of reminder e-mails, an acceptable participation rate was reached (68%). Descriptive statistics were used to analyze survey data. In the qualitative phase, all participants who completed the online survey were recruited to participate in a follow-up phone interview (n = 103). The follow-up interview was tailored for each participant based upon their survey responses, and was designed to elicit examples of program changes made as a result of attendance at the IHE Academy, as well as benefits and barriers to change. A total of 54 interviews were conducted and recorded. Recorded interviews were transcribed and coded. An inter-rater coded 15% of the transcripts to ensure inter-rater reliability. Qualitative data was triangulated with each participant’s survey data. Results. The majority of IHE Academy attendees made significant changes to their teacher preparation programs, and subsequently trained an estimated 2,800 pre-service school health educators in the use of the CDC’s online tools and resources. Through participant outreach, more than 7,000 school health faculty and in-service K-12 health educators were also trained.Conclusions. The IHE Academy is an effective and sustainable approach to improving the quality of K-12 school health education.Recommendations. To further improve the effectiveness of the IHE Academy, program planners should recruit increased numbers of school health graduate students who plan to work in teacher preparation in order to increase their return on investment. Program planners should also consider mandating participation in an online community that could provide guidance and continuing support for IHE Academy attendees. Advisors/Committee Members: Dake, Joseph (Committee Chair).

Subjects/Keywords: Health Education; Teacher Education; School health; teacher preparation; best practices; professional development

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APA (6^th Edition):

Huelskamp, A. C. (2016). A National Assessment of the Impact of the Institutes for Higher Education Academy on School Health Faculty. (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452199276

Chicago Manual of Style (16^th Edition):

Huelskamp, Amelia Catherine. “A National Assessment of the Impact of the Institutes for Higher Education Academy on School Health Faculty.” 2016. Doctoral Dissertation, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452199276.

MLA Handbook (7^th Edition):

Huelskamp, Amelia Catherine. “A National Assessment of the Impact of the Institutes for Higher Education Academy on School Health Faculty.” 2016. Web. 18 Feb 2020.

Vancouver:

Huelskamp AC. A National Assessment of the Impact of the Institutes for Higher Education Academy on School Health Faculty. [Internet] [Doctoral dissertation]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452199276.

Council of Science Editors:

Huelskamp AC. A National Assessment of the Impact of the Institutes for Higher Education Academy on School Health Faculty. [Doctoral Dissertation]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452199276

University of Toledo

29. Thapaliya, Prem S. Optimization of The Fabrication Condition of RF Sputtered ZnO Thin Film Transistors with High-k HfO2 Gate Dielectric.

Degree: PhD, Electrical Engineering, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452258637

► Conventional amorphous silicon based thin film transistors have been the most widely used ones for flat panel display application during the last two decades. However,… (more)

▼ Conventional amorphous silicon based thin film transistors have been the most widely used ones for flat panel display application during the last two decades. However, the low mobility of less than 1 cm2/Vs and light induced instability of the amorphous silicon based thin film transistor make them unsuitable for high resolution displays. Oxide based thin film transistors have attracted a great deal of interest as an alternative to conventional amorphous silicon based thin film transistors for high resolution display applications. In particular, ZnO has gained considerable interest for the next generation transparent and flexible display due to its wide band gap of 3.37 eV, high electron mobility and low temperature deposition forming good quality of polycrystalline film even at room temperature. Consequently all the aforementioned features of ZnO make them promising channel material for the flexible and transparent TFTs. The electrical characteristics of ZnO based TFTs is greatly affected by the deposition condition and hence crystalline quality of channel layer, thickness of channel layer and quality of interface between the gate dielectric and the channel layer. Therefore, the deposition temperature and the thickness of the ZnO channel needs to be optimized in order to achieve high performance ZnO TFTs. Moreover, the quality of interface between the ZnO channel layer and the gate dielectric is of vital importance to improve the performance of the TFTs.In this dissertation, we have fabricated and characterized RF sputtered ZnO based thin film transistor using high-k HfO2 gate dielectric. The transparent ZnO TFTs was realized using FTO as a transparent gate electrode as opposed to commonly used ITO gate electrode. It was found that TFTs fabricated using the FTO gate electrode showed lower mobility and on/off ratio compared to the TFTs with Ru as a gate on the Si substrate. This deterioration of TFTs performance with the use of FTO gate electrode was attributed to the degradation of HfO2 gate dielectric due to the diffusion of fluorine from the FTO into the HfO2 during its deposition at 300 °C. In order to minimize the interface trap density at the interface between the ZnO and HfO2, an interfacial layer of MgO with different thickness was investigated. It was found that 10 nm MgO is an optimum thickness that can reduce the interface trap density by almost one order of magnitude and hence exhibit the best TFTs performance with field effect mobility, threshold voltage, on/off ratio and subthreshold swing to be 0.3 cm2/V.s, 3.7 V , 106 and 1.35 V/decade respectively. The decrease in the interface trap density with the interfacial layer was attributed to the reduction of defects in the ZnO by the excess oxygen ions of MgO. Furthermore, the ZnO channel layer was deposited at different temperature including room temperature, 50 oC, 100 °C and 200 °C, to determine the optimum deposition temperature that can achieve high performance ZnO TFTs. It was found that ZnO deposited at 50 °C showed the best TFT performance with field… Advisors/Committee Members: Jha, Rashmi (Committee Chair).

Subjects/Keywords: Electrical Engineering

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APA (6^th Edition):

Thapaliya, P. S. (2016). Optimization of The Fabrication Condition of RF Sputtered ZnO Thin Film Transistors with High-k HfO2 Gate Dielectric. (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452258637

Chicago Manual of Style (16^th Edition):

Thapaliya, Prem S. “Optimization of The Fabrication Condition of RF Sputtered ZnO Thin Film Transistors with High-k HfO2 Gate Dielectric.” 2016. Doctoral Dissertation, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452258637.

MLA Handbook (7^th Edition):

Thapaliya, Prem S. “Optimization of The Fabrication Condition of RF Sputtered ZnO Thin Film Transistors with High-k HfO2 Gate Dielectric.” 2016. Web. 18 Feb 2020.

Vancouver:

Thapaliya PS. Optimization of The Fabrication Condition of RF Sputtered ZnO Thin Film Transistors with High-k HfO2 Gate Dielectric. [Internet] [Doctoral dissertation]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452258637.

Council of Science Editors:

Thapaliya PS. Optimization of The Fabrication Condition of RF Sputtered ZnO Thin Film Transistors with High-k HfO2 Gate Dielectric. [Doctoral Dissertation]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452258637

University of Toledo

30. Parajuli, Bishal. Study of Hidden Corrosion on Prestressing Strands.

Degree: MS, Civil Engineering, 2016, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452257376

► A parking garage near the north entrance of the University of Toledo built in 1976 had a prestressed spandrel beam fail. The L shaped prestressed… (more)

▼ A parking garage near the north entrance of the University of Toledo built in 1976 had a prestressed spandrel beam fail. The L shaped prestressed spandrel beam exhibited a large dominant crack at the mid-span of the beam. The crack had nearly traveled to the entire depth of the beam and was few inches below the top of the beam. So it was hypothesized that this beam suffered brittle failure since there would have been micro-cracks if the failure was of ductile nature.On visual inspection of this beam and some other beams in the garage, there were signs of corrosion of prestressing strands. Rust in the steel reinforcement was visible along with some color changes in the neighboring concrete. As these indications of corrosion were not easily visible until the concrete covering these strands fell off due to deterioration; the late diagnosis caused much damage to the prestressing strands. When the steel suffered corrosion, the steel was substituted by the rust which increased the volume of the reinforcement.This research was aimed at understanding the cause of the brittle failure of the beam. The beam failed with two broken strands so cross sectional analysis becomes significant to know the behavior of concrete with progressive corrosion of its strands. The number of corroded strands for the beam to suffer brittle failure was determined by varying the strand number and is checked against the experimental values in Response 2000. Response2000 provided all the necessary results for the ultimate moment strength and the cracking moment. In order visualize the corrosion induced crack propagation, analysis of the beam was done in finite element software ABAQUS. It provided insight on the crack growth and the failure of the beam. Hand calculation was done to verify the results of Response2000 taking into account the load specifications of American Society of Civil Engineers/Structural Engineers Institute (ASCE/SEI) 7-10 and Precast/Prestressed Concrete Institute (PCI). The results from Response2000 and Mathcad indicated the beam was initially designed to provide enough capacity to perform well under the service load. But over the period of time, the beam suffered corrosion due to environmental effects and loading. The flaws in the concrete made the steel strands vulnerable to corrosion attack and the degraded strands did not perform to their full capacity. According to ACI 318-11, a structure is ductile if this ratio is greater or equal to 1.2. If this ratio falls below 1.2, the beam loses its ductility and becomes brittle in nature. When the analysis was run for two broken strands as that in the parking garage beam at failure, there was shift in the failure mode from ductile to brittle suggesting the corrosion of strands has affected its ductility and strength. The progressive corrosion of strands eroded them which in reduced the strength of the concrete and eventually led to the failure of beam.The moment capacity results from the analysis and hand calculation were in good agreement. The moment due to the estimated loading on… Advisors/Committee Members: Nims, Douglas (Committee Chair).

Subjects/Keywords: Civil Engineering; corrosion of prestressing strands; finite element analysis; magnetic inspection of corrosion

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Parajuli, B. (2016). Study of Hidden Corrosion on Prestressing Strands. (Masters Thesis). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452257376

Chicago Manual of Style (16^th Edition):

Parajuli, Bishal. “Study of Hidden Corrosion on Prestressing Strands.” 2016. Masters Thesis, University of Toledo. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452257376.

MLA Handbook (7^th Edition):

Parajuli, Bishal. “Study of Hidden Corrosion on Prestressing Strands.” 2016. Web. 18 Feb 2020.

Vancouver:

Parajuli B. Study of Hidden Corrosion on Prestressing Strands. [Internet] [Masters thesis]. University of Toledo; 2016. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452257376.

Council of Science Editors:

Parajuli B. Study of Hidden Corrosion on Prestressing Strands. [Masters Thesis]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1452257376

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