Digital Commons Network^™

Multiple Heat Exchanger Cooling System For Automotive Applications – Design, Mathematical Modeling, And Experimental Observations, Zaker Syed

All Dissertations

The design of the automotive cooling systems has slowly evolved from engine-driven mechanical to computer-controlled electro-mechanical components. With the addition of computer-controlled variable speed actuators, cooling system architectures have been updated to maximize performance and efficiency. By switching from one large radiator to multiple smaller radiators with individual flow control valves, the heat rejection requirements may be precisely adjusted. The combination of computer regulated thermal management system should reduce power consumption while satisfying temperature control objectives. This research focuses on developing and analyzing a multi-radiator system architecture for implementation in ground transportation applications. The premise is to use a single …

What Does It Take To Lead Extension Master Gardener Volunteers?, Charlotte D. Glen, K. S. U. Jayaratne, Gary E. Moore, Lucy K. Bradley, Harriett Edwards

The Journal of Extension

We investigated the importance of volunteer engagement competencies to successful master gardener volunteer administration. We used a web-based survey to collect data from a census of North Carolina Extension agents with master gardener volunteer administration responsibilities. Respondents indicated 52 of the 55 competencies were important to the administration of master gardener volunteers. We concluded that although traditional volunteer management skills are essential, a more comprehensive model encompassing personal and leadership skills is needed to inform development of training and resources that will support attainment of competencies required for successful master gardener volunteer administration.

Risk-Based Freeway Merging And Lane-Changing Decisions For Autonomous Vehicles, Weimin Jin

All Dissertations

The safe freeway merging and lane-changing operation for fully Autonomous Vehicles (AVs) in mixed traffic (i.e., the presence of AVs and non-AVs in the traffic stream) is a challenging task. The AV merging and lane-changing operation could increase crash risks and reduce operational efficiency significantly in mixed traffic.

This dissertation quantifies the freeway merging crash risk and develops a freeway merging decision strategy based on crash risk assessment for an AV attempting to merge in the target lane with non-AVs. The performance of the risk-based merging decision strategy is evaluated in uncongested, near-congested, and congested traffic conditions. The analyses show …

Designing Educational Newsletter Interventions: An Example That Supported Grandfamilies’ Physical Wellness Needs, Priscilla Brenes, Mary Meck Higgins

The Journal of Extension

Effective newsletters have theory-based content and designs tailored to their readers and offer limited-cost community-level approaches to providing helpful, relevant, and engaging information. In accordance with this, we offer an example of a newsletter intervention that supported grandfamilies’ physical wellness needs. Six issues of a brief mail-delivered newsletter were sent yearly for up to 5 years to low-income custodial grandparents. In evaluating the newsletter, most respondents reported reading it, discussing its information, and having greater awareness, knowledge, and motivation or confidence regarding wellness recommendations. Furthermore, 91% described improving 1 or more of their grandfamilies’ cooking, eating, or physical activity practices.

Diagnosis Of Myocardial Hypertrophic Disease States Through Machine Learning And Mechanistic Modeling, Michael William Ward

All Theses

Chronic pressure overload (PO) due to arterial hypertension can lead to structural changes within the heart including left ventricular hypertrophy (LVH) and eventually diastolic heart failure (DHF). The initial diagnosis of PO and LVH is typically challenging and costly, and thus, a new predictive diagnostic tool is desired. In a recent paper by Zile et al., it was found, through the use of a simple multivariate logistic regression, that there exists a multi-biomarker panel with predictive capabilities for the classification of patients with LVH and DHF. In our new work, we furthered the investigation into the plasma biomarker panel proposed …

Northern Giant Hornet (Vespa Mandarinia) And Yellow-Legged Hornet (Vespa Velutina), Potential Pests Of Honey Bees, Benjamin Andrew Powell

Agricultural Education

Exotic hornets present a significant threat to apiculture. Recent introductions of the yellow-legged hornet to Europe and the asian giant hornet to North America have made it critical that regulators, beekeepers and the general public be able to detect and identify these exotic hornets and to understand their biology to minimize the potential impacts to apiculture in South Carolina were they to be introduced.

Issued Patents In A University’S Institutional Repository, Suzanne Reinman, Janet Ahrberg

Journal of the Patent and Trademark Resource Center Association

Beginning in 2016, patents issued by the U.S. Patent and Trademark Office (USPTO) granted to Oklahoma State University were included in SHAREOK (https://shareok.org/.). The joint institutional repository for the Oklahoma State University Libraries (OSU) and the University of Oklahoma Libraries (OU), SHAREOK serves as the home for the intellectual output of both communities and will ultimately include digital dissertations, faculty publications, digital special collections, open access publications, and open educational resources. Including patents has increased the depth of the collection and allows them to be searched or indexed by date, author, title, and subject/classification. Using DSpace software, the contents of …

Visual-Based Minimal-Text Food Safety Training Tools For Chinese-Speaking Food Service Workers, Lakshman Rajagopal, Joel Reynolds, Dawei Li

The Journal of Extension

This article describes visual-based minimal-text food safety tools developed in Mandarin Chinese to educate Chinese-speaking food service workers about safe food handling practices. Ten posters and one PowerPoint presentation were developed, and their efficacy in conveying critical food safety messages was tested with Chinese-speaking food service workers in Iowa. Extension educators can use these tools for formal and informal food safety education, thereby contributing to protecting public health.

Evaporator Modeling And An Optimal Control Strategy Development Of An Organic Rankine Cycle Waste Heat Recovery System For A Heavy Duty Diesel Engine Application, Dhruvang Rathod

All Dissertations

The Organic Rankine Cycle (ORC) has proven to be a promising technology for Waste Heat Recovery (WHR) systems in heavy duty diesel engine applications. However, due to the highly transient heat source, controlling the working fluid flow through the ORC system and maximizing the heat recovery is a challenge for real time application. To that end, this research resulted in the following main developments.

The first new development is in the area of heat exchanger modeling. The heat exchanger is a key component within the WHR system and it governs the dynamics of the complete ORC system. The heat exchanger …

Model Predictive Control Of Modern High-Degree-Of-Freedom Turbocharged Spark Ignited Engines With External Cooled Egr, Rohit Vishvanath Koli

All Dissertations

The efficiency of modern downsized SI engines has been significantly improved using cooled Low-Pressure Exhaust Gas Recirculation, Turbocharging and Variable Valve Timing actuation. Control of these sub-systems is challenging due to their inter-dependence and the increased number of actuators associated with engine control. Much research has been done on developing algorithms which improve the transient turbocharged engine response without affecting fuel-economy. With the addition of newer technologies like external cooled EGR the control complexity has increased exponentially. This research proposes a methodology to evaluate the ability of a Model Predictive Controller to coordinate engine and air-path actuators simultaneously. A semi-physical …

Modeling And Performance Analysis Of A Sloshing Ferrofluid Based Electromagnetic Energy Harvester, Qi Liu

All Dissertations

Computational modeling and performance analysis are carried out for a ferrofluid based electromagnetic energy harvester which converts ambient vibratory energy into electromotive force through sloshing motion of a ferrofluid. The system consists of a tank partially filled with ferrofluid, magnets placed on the opposite sides of the tank and a copper coil wound around the tank. In the presence of an external magnetic field, magnetic dipoles in the ferrofluid rotate and produce a net magnetic moment aligned in the direction of the field. When the device is subjected to an external excitation, the ferrofluid in the tank undergoes a sloshing …

Nasig Core Competencies For Scholarly Communication Librarians

NASIG Newsletter

No abstract provided.

Characterizing The Performance Of A Ferrofluid-Based Electromagnetic Energy Harvester Under Direct And Parametric Excitations, Saad F. Alazemi

All Dissertations

When a container carrying a magnetized ferrofluid is subjected to external mechanical stimuli, the sloshing motion of the magnetized ferrofluid generates a time-varying magnetic flux, which can be used to induce an electromotive force in a coil placed adjacent to the container. This process generates an electric current in the coil, and therewith, can be used to transduce external vibrations into electric energy providing a unique approach for vibration energy harvesting using liquid-state transduction materials. As compared to traditional vibratory energy harvesters that employ soli transduction elements, this approach offers several advantages including, but not limited to, conformability to different …

Niso-Nasig Webinar: How Librarians Use, Implement And Can Support Researcher Identifiers, Sofia A. Slutskaya

NASIG Newsletter

No abstract provided.

Developing Interactive Website Charts For Extension Clientele By Using Google Docs, Emily Caris, Terry Griffin

The Journal of Extension

Interactive website charts can be used to engage stakeholders and help them understand and apply relevant data. We explain methods we used to create and implement interactive charts for online outreach so that other Extension personnel can use similar interactive tools with their clientele. We describe step by step and in detail how we made interactive graphs and embedded them in a website. We also explain why we chose to use Google Docs as the source for this effort. Our approach offers a useful way to disseminate beneficial information to Extension clients.

Investigation Of Advanced Engine Cooling Systems - Optimization And Nonlinear Control, Tianwei (Thomas) Wang

All Dissertations

Advanced automotive engine cooling systems can positively impact the performance, fuel economy, and reliability of internal combustion engines. A smart engine cooling system typically features multiple real time computer controlled actuators: a three way linear smart valve, a variable speed coolant pump, and electric radiator fan(s). In this dissertation, several innovative comprehensive nonlinear control and optimization operation strategies for the next generation smart cooling application will be analyzed. First, the optimal control has been investigated to minimize the electric energy usage of radiator fan matrix. A detailed mathematical model of the radiator fan(s) matrix operation and the forced convection heat …

December 2016 Full Issue

NASIG Newsletter

No abstract provided.

2015 Conference Reports

NASIG Newsletter

No abstract provided.

Implementing Findings From Interpreter Education Research: The Asylum Crisis In Europe And The Case Of Belgium, Heidi Salaets, Katalin Balogh

International Journal of Interpreter Education

No abstract provided.

A Game Of Spot The Difference: Librarians, Repository Managers, And Publishers, Phill Jones, Andrew Wesolek, David Scherer, Charles Watkinson

Presentations

Many library publishing programs emerged from institutional repositories. This close relationship has led to the emergence of content platforms that are designed to operate under either use case, however, the missions and requirements of the two types of program differ. A repository for example, may be primarily concerned with the curation, preservation, and accessibility of their institution’s academic output whilst publishers must also concern themselves with external discoverability, search engine optimization, getting indexed in abstract databases and marketing their journals. In this session, you will hear from three successful library publishers who have embraced this external facing aspect of publishing. …

Design And Demonstration Of A Two-Dimentional Test Bed For Uav Controller Evaluation, Ran Huang

All Theses

A three degree-of-freedom (DOF) planar test bed for Unmanned Aerial Vehicle (UAV) controller evaluation was built. The test-bed consists of an instrumented tether and an experimental twin-rotor, planar UAV mounted with a one DOF manipulator mounted below the UAV body. The tether was constructed to constrain the UAV under test to motion on the surface of a sphere. Experiments can be conducted through the tether, approximating motion in a vertical plane by a UAV under test. The tether provides the means to measure the position and attitude of the UAV under test. The experimental twin-rotor UAV and one-link on-board manipulator, …

Agricultural Producer Perceptions Of Climate Change And Climate Education Needs For The Central Great Plains, Amber Campbell Hibbs, Daniel Kahl, Lisa Pytlikzillig, Ben Champion, Tarik Abdel-Monem, Timothy Steffensmeier, Charles Rice, Kenneth Hubbard

The Journal of Extension

The Central Great Plains Climate Education Partnership conducted focus groups throughout Kansas to gain a better understanding of farmer perceptions and attitudes towards climate change education. Results indicate concern about climatic changes, even if producers are unsure that "human caused climate change" is occurring. Participants indicated they would like access to information through Web-based programs that allow them to manipulate variables relevant to their area and situation. Participants prefer locally relevant information and identified Extension agents as trusted educators. The study provided an expanded understanding of agricultural producer perceptions that will be valuable to individuals or organizations providing climate education.

Adaptive And Robust Braking-Traction Control Systems, John Adcox

All Dissertations

The designs of commercial Anti-Lock Braking Systems often rely on assumptions of a torsionally rigid tire-wheel system and heavily rely on hub-mounted wheel speed sensors to manage tire-road slip conditions. However, advancements in high-bandwidth braking systems, in-wheel motors, variations in tire/wheel designs, and loss of inflation pressure, have produced scenarios where the tire's torsional dynamics could be easily excited by the braking system actuator. In these scenarios, the slip conditions for the tire-belt/ring will be dynamically different from what can be inferred from the wheel speed sensors. This dissertation investigates the interaction of tire torsional dynamics with ABS & traction …

The Nsf/Nih Effect: Surveying The Effect Of Data Management Requirements On Faculty, Sponsored Programs, And Institutional Repositories, Anne Diekema, Andrew Wesolek, Cheryl D. Walters

Publications

The scholarly communication landscape is rapidly changing and nowhere is this more evident than in the field of data management. Mandates by major funding agencies, further expanded by executive order and pending legislation in 2013, require many research grant applicants to provide data management plans for preserving and making their research data openly available. However, do faculty researchers have the requisite skill sets and are their institutions providing the necessary infrastructure to comply with these mandates? To answer these questions, three groups were surveyed in 2012: research and teaching faculty, sponsored programs office staff, and institutional repository librarians. Survey results …

Turning The Corner On Etds, Ellen C. Ramsey, Jennifer Roper, Christopher Vinson, Andrew Wesolek

Presentations

Presenters from Clemson and UVa, both mid-sized public institutions, discuss differences, similarities, and challenges inherent in implementing an ETD program and the policy implications these programs have.

Liberating The Publications Of A Distinguished Scholar: A Pilot Project, Julie Kelly

A repository of copyright educational resources for higher education

This article discusses the process librarians at the University of Minnesota took to regain copyright permission for older works from publishers.

Assessing The Educational Needs Of Urban Gardeners And Farmers On The Subject Of Soil Contamination, Ashley Marie Raes Harms, Deann Ricks Presley, Ganga M. Hettiarachchi, Stephen J. Thien

The Journal of Extension

Participation in urban agriculture is growing throughout the United States; however, potential soil contaminants in urban environments present challenges. Individuals in direct contact with urban soil should be aware of urban soil quality and soil contamination issues to minimize environmental and human health risks. The study reported here assessed the needs of urban gardeners and farmers throughout the United States with respect to soil contamination. Our results suggest that urban gardeners and farmers need and want information and guidance on best management practices for safely growing food crops on mildly contaminated urban soils.

The Extension Service And Rural/Frontier Disaster Planning, Response, And Recovery, Myron A. Eighmy, Thomas E. Hall, Eunice Sahr, Debra Gebeke, Marie Hvidsten

The Journal of Extension

The purpose of the study reported here was to (a) determine the role of Extension in disaster response, (b) identify the information needs, and (c) disseminate education and training modules through the EDEN. Extension staff should know their county's emergency plan and the role identified for Extension. Extension staff should attend local emergency management meetings, be knowledgeable of local and state resources, and redirect citizen calls to agencies. Extension has a primary responsibility for providing the public with educational materials congruent with Extension's program areas. Topics were identified for disaster-related educational materials and new materials were developed.

Power Generation And Control Of Mechatronics Systems - Theory And Test, Kelly Austin

All Theses

An integrated, multi-disciplined approach to engineering design is a broad definition of mechatronics. Though some mechatronics proponents differ in their definitions of the topic, an interdisciplinary approach to engineering is taken by many industries which should be reflected on campus in the approach to engineering education. In this thesis, two mechatronics systems are investigated. A laboratory experiment is developed for use in the mechanical engineering program at Clemson University, and a thermoelectric power generation from diesel engine exhaust heat is investigated as an automotive industry application.
An electromagnet excited masspendulum system with attached spring and damper elements is introduced as …

Multi-Agency Team Uses University Archival Tool To Conserve Vital Project Information, Diana Roberts, Kay Vyhnanek, Sujaya Rao

The Journal of Extension

The Western Cereal Leaf Beetle Team culminated a successful integrated pest management project on the cereal leaf beetle (CLB) by archiving their materials at http://clbarchive.wsu.eduin an open, digital repository hosted by Washington State University (WSU) Research Exchange. This archive enables researchers to store materials under a stable, searchable URL that is found easily by online search engines. Materials stored may be added or removed to maintain relevance, and file formats may be updated as software changes over time. Creative Commons licensing of the archive enables researchers to use these materials freely, with credit given to the authors.