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2012

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Refractive Index Chemical Sensing With Noble Metal Nanoparticles, Phillip Blake Dec 2012

Refractive Index Chemical Sensing With Noble Metal Nanoparticles, Phillip Blake

Graduate Theses and Dissertations

Chemical sensing is a key component in modern society, especially in engineering applications. Because of their widespread impact, improvements to chemical sensors are a significant area of research. One class of sensors, plasmonic sensors, is being heavily researched because of their ability to detect low levels of analyte in near real time without destroying the analyte. This work studies a new class of plasmonic sensor that utilizes diffractive coupling to improve sensor performance. Specifically, this work outlines the first study of diffractive coupling sensors with typical nanoparticle shapes. Sensitivity of this new class of sensor is directly compared to typical …

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Timing Of Castration, With Or Without Analgesia, On Growth Performance, Hematology, And Behavior Of Beef Calves, April C. Brown Dec 2012

Timing Of Castration, With Or Without Analgesia, On Growth Performance, Hematology, And Behavior Of Beef Calves, April C. Brown

Graduate Theses and Dissertations

Angus-sired (n = 30) and Hereford-sired (n = 32) bull calves were assigned randomly to 1 of 4 treatments. Treatments were 1) surgical castration near birth, 2) oral administration of the analgesic meloxicam (1 mg/kg of body weight) followed by surgical castration near birth, 3) surgical castration at weaning, or 4) surgical castration at weaning with oral administration of the analgesic meloxicam (1 mg/kg of body weight). Data was recorded for behavior, hematology, and growth at birth and weaning. Calf standing and lying activity was monitored at both stages by recording x and y axis positions of a data logger …

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Computational Design Of The Electrical And Mechanical Performance Of Steerable Mems Antennas, Morgan Andrew Roddy Dec 2012

Computational Design Of The Electrical And Mechanical Performance Of Steerable Mems Antennas, Morgan Andrew Roddy

Graduate Theses and Dissertations

This thesis describes the origins, improvements, and variations of a broadband microwave antenna that can be beam-steered by a micro-electromechanical system (MEMS). The steerable MEMS antenna of this work was comprised of a planar antenna on top of a Silicon membrane. The membrane is etched to create a gimbal hinge structure and a platform which supported the antenna and gave it one or two degrees of freedom of rotation. The antennas presented were broadband and fed by a coplanar waveguide (CPW) transmission line which traversed the hinge structure. The antenna's orientation in space was designed to be changed through electrostatic …

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Long-Term Effects Of Rice Rotation, Tillage, And Fertility On Near-Surface Soil Carbon And Nitrogen Cycling, Jill Marie Motschenbacher Dec 2012

Long-Term Effects Of Rice Rotation, Tillage, And Fertility On Near-Surface Soil Carbon And Nitrogen Cycling, Jill Marie Motschenbacher

Graduate Theses and Dissertations

Rice (Oryza sativa L.)-based cropping systems are different from other row crops due to the flood-irrigation scheme used from about one month after planting to a few weeks prior to harvest. The frequent cycling between anaerobic (i.e., flooding during the growing season) and aerobic (i.e., generally, the remainder of the year) conditions can influence the rate of soil organic matter (SOM) decomposition, which can greatly influence carbon (C) and nitrogen (N) storage and sequestration in the soil over time. Therefore, a study was conducted on a silt-loam soil (fine, smectitic, thermic, Typic Albaqualf) at the Rice Research and Extension Center …

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Documentation And Control Of Acetolactate Synthase-Resistant Barnyardgrass (Echinochloa Crus-Galli) In Arkansas Rice, Michael Joshua Wilson Dec 2012

Documentation And Control Of Acetolactate Synthase-Resistant Barnyardgrass (Echinochloa Crus-Galli) In Arkansas Rice, Michael Joshua Wilson

Graduate Theses and Dissertations

Barnyardgrass, the most problematic grass weed of Arkansas rice, was found resistant to propanil in 1990, and since then, it has evolved resistance to quinclorac and clomazone. Barnyardgrass is now believed to have evolved resistance to acetolactate synthase (ALS)-inhibiting herbicides. The goal of this research was to confirm and determine the level of resistance of the putative resistant biotype to the ALS-inhibiting herbicides imazethapyr, bispyribac, and penoxsulam and to develop herbicide programs for controlling ALS-, propanil-, quinclorac-, and clomazone-resistant barnyardgrass. The lethal dose needed to kill 50% of the putative ALS-resistant plants was higher than that of the susceptible biotype …

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Moving Forward With Founders: Strategies For Change In Volunteer Organizations, Paula Rgers Huff, Sue Pleskac Dec 2012

Moving Forward With Founders: Strategies For Change In Volunteer Organizations, Paula Rgers Huff, Sue Pleskac

Journal of Extension

Founder's Syndrome can create barriers to change in Extension programs. As a result, Extension staff have experienced challenges in effecting organizational change where Founders are present. 4-H Youth Development staff in Wisconsin applied a variety of strategies to move forward with 4-H programming, despite the influence of the Founders. Staff development has focused on three strategies with regard to Founders: Staff Awareness and Understanding, Training and Support, and Teaching Tools. A comprehensive educational approach that includes multiple strategies is likely to yield the most benefit to Extension staff dealing with Founder's Syndrome in volunteer organizations.

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Pilot Study: A Guide To Equine Welfare Assessment, Taylor A. Fabus, Karen Waite, John Shelle, Janice Siegford, Julie Chapin Dec 2012

Pilot Study: A Guide To Equine Welfare Assessment, Taylor A. Fabus, Karen Waite, John Shelle, Janice Siegford, Julie Chapin

Journal of Extension

In response to growing interest in equine welfare and the need for 4-H curriculum, a pilot study of equine welfare curriculum was conducted with 4-H clubs (N=15). An overall low response rate of 26.67% was experienced. An online survey was then conducted in order to determine factors affecting involvement. Time constraints for both youth and leaders were among the most commonly cited deterrents to completion. Survey responses also suggested that following a hybrid (of hard copy and online instruction) may increase usability and effectiveness of A Guide to Equine Welfare Assessment.

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Serving Clientele With Disabilities: An Assessment Of Texas Fcs Agents' Needs For Implementing Inclusive Programs, Rick L. Peterson, Cheryl Grenwelge, Michael R. Benz, Dalun Zhang, J. Aaron Resch, Geraldo Mireles, Lakshmi Mahadevan Dec 2012

Serving Clientele With Disabilities: An Assessment Of Texas Fcs Agents' Needs For Implementing Inclusive Programs, Rick L. Peterson, Cheryl Grenwelge, Michael R. Benz, Dalun Zhang, J. Aaron Resch, Geraldo Mireles, Lakshmi Mahadevan

Journal of Extension

This article reports on a qualitative study to assess Texas Family Consumer Science (FCS) Extension professionals' experiences working with individuals with disabilities and their perceived skills in promoting and delivering inclusive educational programming for this audience. Study results indicate that overall Extension educators viewed inclusive programming for individuals with disabilities as favorable but also reported a number of barriers to successfully implement inclusive programs. Educators' most pressing needs included: professional development in the area of disability, inclusive educational strategies and support funds for necessary accommodations. Implications for promoting and delivering inclusive educational programming for communities are addressed.

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Extension Efforts To Restore Bottomland Oaks Requires Knowledge Of Both Trees And Soil, David Mercker, Ryan Blair, Don Tyler, Arnold Saxton, Joshua Smith Dec 2012

Extension Efforts To Restore Bottomland Oaks Requires Knowledge Of Both Trees And Soil, David Mercker, Ryan Blair, Don Tyler, Arnold Saxton, Joshua Smith

Journal of Extension

Bottomland oak restoration projects have been marginally successful because professionals often recommend conventional tree planting procedures that prove problematic in saturated soils. A reliable method of matching oak species to bottomland sites is needed prior to planting. In the study reported here, bottomland oaks were matched to hydric soils based on soil mottling. The findings suggest that as soil drainage improves, species diversity expands. Natural Resource Extension professionals should consider "active" methods of direct technical assistance and field demonstrations and "passive" methods of newsletters, publications, and pamphlets, as delivery methods to educate both landowners and professionals about this subject.

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Enhancing Both Cooperative Extension And National Environmental Education Resources, Martha C. Monroe Dec 2012

Enhancing Both Cooperative Extension And National Environmental Education Resources, Martha C. Monroe

Journal of Extension

State Extension programs can contribute to the successful adoption of national environmental education programs by making locally relevant resources available, creating reference materials to bridge between 4-H project books and other resources, and developing companion materials that supplement national materials with local issues and resources. Such activities provide opportunities to integrate research and teaching with Extension programs and build productive relationships with agencies and organizations. Seven strategies with examples from one state are explained.

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Improving Alaskan Aviation Safety With Turf Runways, Stephen C. Brown Dec 2012

Improving Alaskan Aviation Safety With Turf Runways, Stephen C. Brown

Journal of Extension

A leading cause of aviation accidents in Alaska is due to rock damage caused by taking off and landing on gravel runways. This article describes how Extension in Alaska planted a demonstration runway with an environmentally appropriate native grass to suppress rock damage to propellers, engines, control surfaces, and airframes. More than 200 runways have taken advantage of the program at an annual savings of 1.5 million dollars. The program has also resulted in national attention for the University of Alaska Fairbanks Mat-Su/Copper River Cooperative Extension Service District.

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Extension's Online Presence: Are Land-Grant Universities Promoting The Tripartite Mission?, Shannon Arnold, Alexandra Hill, Nikki Bailey, Courtney Meyers Dec 2012

Extension's Online Presence: Are Land-Grant Universities Promoting The Tripartite Mission?, Shannon Arnold, Alexandra Hill, Nikki Bailey, Courtney Meyers

Journal of Extension

Land-grant universities were established with a tripartite mission: education, research, and outreach through the Cooperative Extension Service. The purpose of the study reported here was to evaluate the online presence and technological adoptions of Extension on land-grant university, college of agriculture, and state Extension websites. Almost half of the university websites did not contain a direct link to Extension, and only 10% highlighted Extension services. Many state Extension websites had some form of social media, but only 45% had a link to eXtension. The results demonstrate the need to expand Extension's Internet presence, particularly on land-grant university websites.

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Social Media In Diabetes Education: A Viable Option?, Julie Cooper, Jill N. Cox, Marilyn A. Corbin Dec 2012

Social Media In Diabetes Education: A Viable Option?, Julie Cooper, Jill N. Cox, Marilyn A. Corbin

Journal of Extension

As Extension educators are encouraged to implement more cost-effective and efficient means of programming, the use of Web-based social media has become a popular option. Penn State Extension implemented a social media awareness survey among participants in its community-based diabetes education program to determine familiarity with this medium, along with rates of current and future use. Results indicated a level of comfort with email and Facebook options, while many preferred more traditional methods of communication. Future research is needed to determine if this online mode of learning may be more effective in targeting a younger Dining with Diabetes population.

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Electronic Commerce Adoption In The Hardwood Industry, Kathryn G. Arano, Ben Spong Dec 2012

Electronic Commerce Adoption In The Hardwood Industry, Kathryn G. Arano, Ben Spong

Journal of Extension

The U.S. hardwood industry must follow the lead of corporate America in adopting e-commerce to remain competitive domestically and globally. A mail survey was conducted to investigate e-commerce adoption and trends among West Virginia primary and secondary hardwood industries. About 47% of the respondents have adopted e-commerce in their business. Factors influencing e-commerce adoption include firm output, export activity, and industry type. The top three reasons for adopting e-commerce include greater exposure to potential customers, improvement of service to customers, and improvement of company's competitiveness. The three major concerns for not adopting e-commerce include profitability, information security, and cost.

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Poultry Farmers' Willingness To Participate In Energy Audits, Kimberly L. Jensen, Roland K. Roberts, Burton C. English Dec 2012

Poultry Farmers' Willingness To Participate In Energy Audits, Kimberly L. Jensen, Roland K. Roberts, Burton C. English

Journal of Extension

Farmers' willingness to participate in energy audits of their poultry operations is influenced by a variety of farm characteristics and farmer demographics. Data from a 2008 survey of Tennessee poultry farmers were used in a logit regression to investigate factors influencing willingness to participate in energy audits. Size of operation, energy costs, use of propane, farm income, use of energy efficiency measures, and share of acreage in row crops influenced willingness to participate. Farmer demographics, including farming experience, educational attainment and use of Extension services, also influenced willingness to participate.

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Viticulture Education Via Blogging, Eric T. Stafne Dec 2012

Viticulture Education Via Blogging, Eric T. Stafne

Journal of Extension

Extension educators must become creative to increase impact at a reduced cost. A blog from the Oklahoma State University viticulture and enology program through Wordpress engaged industry members about grape growing. The most views were during March and June, important months in the season. Off-season months (October through January) resulted in fewer readers. Views were consistent throughout the workweek, but declined during the weekend. A visual complement to a blog entry, such as a photo, may encourage readers to view content. Overall, the blog expand the reach of the Oklahoma viticulture and education program at no added expense.

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E-Newsletters: A Simple Way To Integrate Technology With Extension Programming, Luke Erickson, Lyle Hansen Dec 2012

E-Newsletters: A Simple Way To Integrate Technology With Extension Programming, Luke Erickson, Lyle Hansen

Journal of Extension

Extension educators can easily include technology in regular programming. Several Extension faculty conducted a survey to determine the overall effectiveness of a electronic newsletter (e-newsletter). Results indicated that this e-newsletter had a wide viral reach, provided strong local impact in terms of confidence and behavior changes, increased website traffic, and helped establish a strong web presence. This e-newsletter also helped increase programming requests and strengthen relationships with local legislators and other leaders. The implication is that e-newsletters are cost-effective, time-friendly, and relatively non-technical tools for expanding the reach of local Extension programs, and for reaching online audiences.

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Using On-Line Bulletin Boards To Gather Preliminary Information, Kathleen Kelley, Ramu Govindasamy, Jeffrey Hyde Dec 2012

Using On-Line Bulletin Boards To Gather Preliminary Information, Kathleen Kelley, Ramu Govindasamy, Jeffrey Hyde

Journal of Extension

Internet bulletin-board sessions can be used to collect preliminary, qualitative data. This method allows Extension personnel to gather responses from stakeholders about potential programming, consumer needs and desires, and preference for program delivery method without assembling participants in one location. Several other advantages exist, including time available for moderators and researchers to review participants' submissions and ability to alter questions, if needed. Disadvantages, compared to traditional face-to-face focus group session, exist; however, certain shortcomings can be overcome. Preliminary data collected can help Extension personnel identify issues to explore further including programming and opportunities for stakeholders.

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Increasing Response Rates To Web-Based Surveys, Martha C. Monroe, Damian C. Adams Dec 2012

Increasing Response Rates To Web-Based Surveys, Martha C. Monroe, Damian C. Adams

Journal of Extension

We review a popular method for collecing data—Web-based surveys. Although Web surveys are popular, one major concern is their typically low response rates. Using the Dillman et al. (2009) approach, we designed, pre-tested, and implemented a survey on climate change with Extension professionals in the Southeast. The Dillman approach worked well, and we generated response rates as high as 79%. However, the method was not problem-free. We share several lessons learned and recommendations for increasing response rates with Web-based surveys and draw attention to the importance of personalized and repeated contact for improving survey response rates.

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Mixed-Mode Surveys: A Strategy To Reduce Costs And Enhance Response Rates, Daniel Tobin, Joan Thomson, Rama Radhakrishna, Luke Laborde Dec 2012

Mixed-Mode Surveys: A Strategy To Reduce Costs And Enhance Response Rates, Daniel Tobin, Joan Thomson, Rama Radhakrishna, Luke Laborde

Journal of Extension

Mixed-mode surveys present one opportunity for Extension to determine program outcomes at lower costs. In order to conduct a follow-up evaluation, we implemented a mixed-mode survey that relied on communication using the Web, postal mailings, and telephone calls. Using multiple modes conserved costs by reducing the number of postal mailings yet maintained an acceptable response rate (67.1%). The case presented here provides further evidence that using mixed-mode survey techniques provides Extension with a tool to conduct rigorous survey research while adapting to budget constraints.

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Capital Budgeting For Hay Storage Decisions, Kd Dillivan Dec 2012

Capital Budgeting For Hay Storage Decisions, Kd Dillivan

Journal of Extension

This article illustrates a capital budgeting tool that Extension agents and specialists can use to assist agriculture producers when contemplating the construction of a hay storage facility. Capital budgeting is a tool for evaluating the effects of an investment choice on a business. The payback method is a quick and simple capital budgeting procedure. Use of this method requires producers to estimate hay price, facility construction cost, and potential hay loss per year assuming no storage.

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Introduction: Special Issue On Gender, David Palfreyman Dec 2012

Introduction: Special Issue On Gender, David Palfreyman

All Works

No abstract provided.

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An Affordance-Based Framework For Human Computation And Human-Computer Collaboration, R. Jordan Crouser, Remco Chang Dec 2012

An Affordance-Based Framework For Human Computation And Human-Computer Collaboration, R. Jordan Crouser, Remco Chang

Computer Science: Faculty Publications

Visual Analytics is “the science of analytical reasoning facilitated by visual interactive interfaces” [70]. The goal of this field is to develop tools and methodologies for approaching problems whose size and complexity render them intractable without the close coupling of both human and machine analysis. Researchers have explored this coupling in many venues: VAST, Vis, InfoVis, CHI, KDD, IUI, and more. While there have been myriad promising examples of human-computer collaboration, there exists no common language for comparing systems or describing the benefits afforded by designing for such collaboration. We argue that this area would benefit significantly from consensus about …

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Interface Design For Unmanned Vehicle Supervision Through Hybrid Cognitive Task Analysis, Jamie C. Macbeth, M. L. Cummings, Luca F. Bertuccelli, Amit Surana Dec 2012

Interface Design For Unmanned Vehicle Supervision Through Hybrid Cognitive Task Analysis, Jamie C. Macbeth, M. L. Cummings, Luca F. Bertuccelli, Amit Surana

Computer Science: Faculty Publications

While there is currently significant interest in developing Unmanned Aerial Systems (UASs) that can be supervised by a single operator, the majority of these systems focus on Intelligence, Surveillance, and Reconnaissance (ISR) domains. One domain that has received significantly less attention is the use of multiple UASs to insert or extract supplies or people. To this end, MAVIES (Multi-Autonomous Vehicle Insertion-Extraction System) was developed to allow a single operator the ability to supervise a primary cargo Unmanned Aerial Vehicle (UAV) along with multiple scouting UAVs. This paper will detail the development of the design requirements generated through a Hybrid Cognitive …

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Optimization Of Nonlinear Switch Cells For Switching Converters, Bradley Alan Reese Dec 2012

Optimization Of Nonlinear Switch Cells For Switching Converters, Bradley Alan Reese

Graduate Theses and Dissertations

Switch cells consist of an array of power switches and passive components which can replace the main switches alone in many power topologies, allowing reduced switching loss without altering the power topology directly. This thesis discusses the development of a switch cell topology that utilizes a saturable resonant inductor to reduce the size and power loss of the cell. Additionally, the cell transfers energy stored in the inductor into a capacitor for efficient energy storage during the cell's conduction region. This energy is then transferred back to the system when the cell turns off, thus reducing the total switching energy.

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In Field Fracture Management In Horses, Carstanjen Bianca, Siewruk Kasia, Gajewski Zdzislaw Dec 2012

In Field Fracture Management In Horses, Carstanjen Bianca, Siewruk Kasia, Gajewski Zdzislaw

The Thai Journal of Veterinary Medicine

Veterinary practitioners can be confronted with limb fractures in all types of horses. Immediate evaluation of the horse’s vital parameters, diagnosis, medication and stabilization of the fractured limb with splint bandages or fiberglass cast are of uppermost importance for a possible therapy. Adequate professional transportation of the horse with a fracture to a specialized referral center for diagnosis and therapy is crucial for a positive treatment strategy. This summary article describes in field emergency management of the equine patient with a fracture.

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Molecular Detection And Genotype Differentiation Of Feline Coronavirus Isolates From Clinical Specimens In Thailand, Somporn Techangamsuwan, Araya Radtanakatikanon, Suphasawatt Purnaveja Dec 2012

Molecular Detection And Genotype Differentiation Of Feline Coronavirus Isolates From Clinical Specimens In Thailand, Somporn Techangamsuwan, Araya Radtanakatikanon, Suphasawatt Purnaveja

The Thai Journal of Veterinary Medicine

Feline coronavirus (FCoV) infection manifests a wide magnitude of clinical symptoms from nonpathogenic mild enteric infection to pathogenic fatal feline infectious peritonitis (FIP). Based on the in vitro properties and antigenic relationship to canine coronavirus (CCoV), FCoVs are classified into type I and II with different continent preference. To investigate the incidence of FCoV infection among cat populations in Thailand during 2010-2011, clinical specimens (103 bodily fluids from 95 FIP clinically suspected cats and 17 feces from 7 healthy cats living in groups and 10 healthy cats living singly) were analyzed by amplification of the 3’UTR gene. Among them, 46% …

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Use Of Jakr-Na-Rai (Gynura Divaricata) As A Roughage Source On Growth Performance, Blood Constituent, Blood Glucose And Cholesterol Level In Growing Rabbits, Keerati Keeratikajorn, Navapat Pipatpaitoon, Sunisa Thunyodom, Somkid Khanda, Punyaphat Ittitanawong, Suwanna Kijparkorn Dec 2012

Use Of Jakr-Na-Rai (Gynura Divaricata) As A Roughage Source On Growth Performance, Blood Constituent, Blood Glucose And Cholesterol Level In Growing Rabbits, Keerati Keeratikajorn, Navapat Pipatpaitoon, Sunisa Thunyodom, Somkid Khanda, Punyaphat Ittitanawong, Suwanna Kijparkorn

The Thai Journal of Veterinary Medicine

The objective of this study was to investigate Jakr-Na-Rai (Gynura divaricata) as a roughage source on growth performance, blood constituent, blood glucose and cholesterol in growing rabbits. Twenty-four 7-week-old New Zealand White rabbits (12 males and 12 females) were randomly allocated into 3 groups of 8 with equal sex. The rabbits in the first group were fed on commercial feed while the rabbits in the 2nd and 3rd groups were fed the same as first group and supplemented with para grass (Brachiaria mutica) and Jakr-Na-Rai, respectively. The rabbits were raised in individual cages in opened house and received feed and …

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Efficacy Of Different Vaccination Programs Against Newcastle Disease Virus Challenge In Broiler Chickens, Jiroj Sasipreeyajan, Tawatchai Pohuang, Nida Sirikobkul Dec 2012

Efficacy Of Different Vaccination Programs Against Newcastle Disease Virus Challenge In Broiler Chickens, Jiroj Sasipreeyajan, Tawatchai Pohuang, Nida Sirikobkul

The Thai Journal of Veterinary Medicine

The present study was designed to determine the protection afforded by different vaccination programs against the virulent Newcastle disease virus (vNDV). The chickens were divided into 7 groups, 40 chickens in each. Group 1 did not receive any vaccine and served as a negative control group. Groups 2-7 were vaccinated with different vaccination programs against vNDV. At 1 day old, the chickens in all the vaccinated groups were inoculated with live attenuated vaccine, Ulster strain, followed by different inactivated vaccines including 0.1 ml/chicken of inactivated vaccine A in groups 2 and 4, 0.1 ml/chicken of inactivated vaccine B in groups …

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Effect Of Semen Collection Techniques On Semen Quality And Sperm Motility Parameters In Siamese Fighting Cock (Gallus Gallus), Nathavut Kanatiyanont, Kornchai Kornkaewrat, Piyawan Suthanmapinunt, Anuchai Pinyopummin Dec 2012

Effect Of Semen Collection Techniques On Semen Quality And Sperm Motility Parameters In Siamese Fighting Cock (Gallus Gallus), Nathavut Kanatiyanont, Kornchai Kornkaewrat, Piyawan Suthanmapinunt, Anuchai Pinyopummin

The Thai Journal of Veterinary Medicine

Abdominal massage (AM) is a common method for semen collection in avian species. There are few data concerning electro-ejaculation (EE) in this species. This experiment was carried out to study the effect of semen collection techniques (AM and EE) on semen quality and sperm motility parameters in three Siamese fighting cocks (Gallus gallus). EE was done under general anesthesia by isoflurane vaporizer. In experiment 1, either low voltage (5- 10 volts) or high voltage (5-30 volts) protocols for EE stimulation was applied. Ejaculations were obtained from all attempts (n= 4) in both protocols. High voltage protocol gave greater percentage of …

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