Master of Science / Department of Grain Science and Industry / Xiuzhi Susan Sun / Soybean oil-based resin for transparent flexible coating applications were formulated by dihydroxyl soybean oil (DSO) with commercial epoxy monomers (i.e., epoxidized soybean oil (ESO) and 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxylate (ECHM)). The resin was formed to thermoset polymers using cationic ring-opening photopolymerization. The ether crosslinking and post-polymerization of the polymeric network were observed using Fourier transform infrared spectroscopy. Thermal properties of the bio-based coating materials and their copolymerization behaviors were examined using a differential scanning calorimetry and a thermogravimetric analyzer. Crosslink density and molecular weight between crosslink were obtained from dynamic mechanical analysis. ECHM/DSO (1: 1.43 weight ratio) films showed the highest elongation at break (49.2 %) with a tensile strength of 13.7 MPa. After 2 months storage, the elongation at break and tensile strength of films were 32 % and 15.1 MPa, respectively. ESO/DSO films (w/w ratios of 1:0.1, 1:0.15, and 1:0.2) exhibited stable flexibility around 11-13 % of elongations at break without significant reductions of tensile strengths (2.5 to 4.4 MPa) during 2-months shelf life. Optical transparencies of the films were comparable to commercial glass and polymers, and water uptake properties (0.72 and 2.83%) were significantly low.

Master of Regional and Community Planning / Department of Landscape Architecture/Regional and Community Planning / Huston Gibson / Rural communities across America are working to strengthen their economies, provide better quality of life to residents, and build on assets such as traditional main streets, transportation initiatives, and natural amenities and resources. Today, rural communities face an array of challenges. Small communities are vulnerable to the impacts of expensive commutes, lack of mobility, financial resources, and other services. According to the USDA, “Some small communities, have limited local government staff, experience, or funding, which can mean few resources dedicated to providing sustainable amenities, regional collaboration, and other efforts to identify shared community goals and visions that can help shape growth and development” (USDA, 2011). Small communities must work hard to compete with larger cities and other communities to sustain economically and become prominent. This is often noticeable when there is a lack of investment and economic prosperity. Many rural communities have limited transportation options. Most small communities are not fit to support multiple modes of transportation, which limits access to jobs, medical care, and educational opportunities. For those who do drive, commutes to distant employment centers can be time consuming and require a large percentage of the family budget to be spent on transportation (USDA, 2011). In addition, intercity and regional mobility are drivers of economic growth in rural communities and bring tourists and other consumers to community businesses. Rural communities and small towns should be valued for their distinctive and historic features. Communities that conserve and build upon these resources, such as historic downtowns and main streets, will be better positioned to enhance quality of life for their residents. Without revitalizing main streets we would not see the places of shared memory where people are suppose to come together to live, work, and play.

Master of Science / Department of Apparel, Textiles & Interior Design / Sherry J. Haar and Kim Y. Hiller Connell / Many sustainable garments do not engage wide consumer interest, nor encourage eco-conscious purchasing. Meanwhile, mass consumption of unsustainable apparel contributes to environmental degradation (Black, 2008). However, Niinimäki (2010) suggests that engaging consumers in the design and development of environmentally sustainable products could improve the balance between environmental design decisions and functional, aesthetic, and emotional qualities (Lamb & Kallal, 1992). The purpose of this practice-based research was to (a) identify apparel and environmental attitudes and consumption behaviors of potential sustainable apparel consumers, (b) generate sustainable apparel design concept and product through use of participatory design methods, and (c) evaluate the sustainable concept, product, and participatory method. The sample was 10 female university students. Consumer data was collected through an online (i.e., Facebook) ethnographic journal and a focus group. Qualitative analysis generated the target market’s ideal apparel characteristics and ideal environmental apparel characteristics as apparel offering versatility and variety within their existing wardrobes; elements expressive of their personalities; simple and inexpensive maintenance; organic or recycled materials; and less textile waste at disposal. Additionally, it was determined that participants had low knowledge of the apparel and textile industry and its environmental impacts. Generation of sustainable apparel design ideas occurred through a second focus group session. Analysis of the focus group data, combined with the researcher’s tacit sustainable design knowledge, formed a design concept. The sustainable apparel design concept was comprised of three characteristics reflective of the target market’s ideals and design suggestions: be versatile through various temperatures; social settings, and environments; be convertible through temporary adjustment of functional and aesthetic elements; and be transitional allowing the garment to be layered for greater thermal insulation without detracting from the appearance. The sustainable apparel concept was an application of the pre-existing Design for User Interaction sustainable design strategy. The sustainable apparel design concept was then applied to the development of an outerwear garment and presented to the participants and mentors as a digital sketch. The design addressed the sustainable design concept through interchangeable envelope-style shell layers, an insertable thermal core layer, a buttoned closure at the hemline and interconnecting button points for added alignment between layers. In this garment, the researcher applied participants’ suggestions of style, materials, and inclusion of a core layer. Following sketch refinement, two prototypes were constructed. The first prototype consisted of a thermal core layer and outer coat layer. Due to challenges with the core layer fabric, the second prototype modified the core layer material and style. Additionally, in the second prototype, the shell was made sleeveless and both a bolero style jacket and lining were added. Dual button fasteners connected the layers. During the third focus group session, participants evaluated the design concept, second garment prototype, and the participatory design methods. Participants noted that the design concept provided increased ease of garment care (which could potentially increase the frequency of laundering); ease of garment storage; and increased versatility through varying temperatures. Participants’ suggestions for prototype refinement included the addition of a kick-pleat and reduction of button alignment points. Prototype development did not reach completion during this study. Further refinement of the garment’s pattern and fit, implementation of additional aesthetic/functional elements, and development of an intuitive transformation are necessary. Participant evaluation of participatory methods and study participation were the use of Facebook as an online ethnographic journal made daily participation easy and allowed the researcher to become familiar with their personalities, increasing their comfort at later stages of the research. Participants felt their suggestions were evident in the garment prototype and were as involved as their experience and knowledge allowed. The only participant suggestion regarding the participatory design experience was the addition of updates informing participants of the design progress between focus group sessions. Though the concept and resulting garment were not exceedingly original, participants were pleased with the fruition of their ideas. This finding indicates a willingness to participate in the design process, supportive of participatory design.

Master of Science / Department of Agronomy / Dorivar A. Ruiz Diaz Suarez / Soybeans have expanded into Western Kansas during the last 50 years, increasing in area by 14,500%. There are several limitations that come with trying to grow soybeans in this region, including fertility constraints, moisture stress, and improper use of fertilizers. However, the largest constraint at this time seems to be the presence of micronutrient deficiencies, specifically iron. This thesis has an introduction, and three major chapters.The objective of the first study on agronomics was the evaluation of the effect of Fe fertilizer application using foliar and seed-applied methods in combination with variety selection for Fe deficiency management of soybean grown under irrigated conditions in Western Kansas. The second study uses multivariate analysis as an exploratory tool useful in determining simultaneous observation and analysis of more than one variable in a multidimensional space. Factor analysis is used to find underlying factors that one variable alone cannot measure. The objective of this study was to determine the underlying factors and the multi-linear models that are associated with soil parameters that can create Fe chlorosis in the Great Plains. The third study looked at different application rates of seed-applied Fe fertilizer to try and determine the optimum application rate for application of chelated Fe in Western Kansas.

Master of Science / Department of Chemistry / Jun Li / With the worldly consumption of energy continually increasing and the main source of this energy, fossil fuels, slowly being depleted, the need for alternate sources of energy is becoming more and more pertinent. One promising approach for an alternate method of producing energy is using solar cells to convert sunlight into electrical energy through photovoltaic processes. Currently, the most widely commercialized solar cell is based on a single p-n junction with silicon. Silicon solar cells are able to obtain high efficiencies but the downfall is, in order to achieve this performance, expensive fabrication techniques and high purity materials must be employed. An encouraging cheaper alternative to silicon solar cells is the dye-sensitized solar cell (DSSC) which is based on a wide band gap semiconductor sensitized with a visible light absorbing species. While DSSCs are less expensive, their efficiencies are still quite low compared to silicon. In this thesis, Grätzel cells (DSSCs based on TiO2 NPs) were fabricated and optimized to establish a reliable standard for further improvement. Optimized single layer GSCs and double layer GSCs showing efficiencies >4% and efficiencies of ~6%, respectively, were obtained. Recently, the incorporation of metallic nanoparticles into silicon solar cells has shown improved efficiency and lowered material cost. By utilizing their plasmonic properties, incident light can be scattered, concentrated, or trapped thereby increasing the effective path length of the cell and allowing the physical thickness of the cell to be reduced. This concept can also be applied to DSSCs, which are cheaper and easier to fabricate than Si based solar cells but are limited by lower efficiency. By incorporating 20 nm diameter Au nanoparticles (Au NPs) into DSSCs at the FTO/TiO2 interface as sub wavelength antennae, average photocurrent enhancements of 14% (maximum up to ~32%) and average efficiency enhancements of 13% (maximum up to ~23% ) were achieved with well dispersed, low surface coverages of nanoparticles. However the Au nanoparticle solar cell (AuNPSC) performance is very sensitive to the surface coverage, the extent of nanoparticle aggregation, and the electrolyte employed, all of which can lead to detrimental effects (decreased performances) on the devices.

According to the U.S. Small Business Association, the failure rates for small businesses in 2014 were as high as 50% to 80% within the first 5 years of establishment. The purpose for this multiple case study was to explore the strategies that small business owners have used to sustain their businesses beyond 5 years. Guided by entrepreneurship theory as the conceptual framework, and a purposive sampling method, this qualitative case study used semistructured interviews with 3 successful, small, ethnic grocery business owners in Anchorage, AK to better understand small business strategies for survival. Member checking and triangulation with field notes, interview data, business websites, customer comments, and government documents helped ensure theoretical saturation and trustworthiness of interpretations. Using pre-coded themes for the data analysis, the 8 themes from this study were entrepreneur characteristics, education and management skills, financial planning, marketing strategies and competitive advantages, social networks and human relationships, technology and innovation, government supports and social responsibility, and motivational influence. Two key results indicated the strategies needed for small business owners were entrepreneur management skills and government support for small businesses. These findings may influence positive social change by improving small business owner competence and sustainability, rising higher business incomes, providing a better quality of life to employees and their communities welfare benefiting the entire U.S. economy.

Doctor of Philosophy / Department of Apparel, Textiles, and Interior Design / Melody L. A. LeHew / The relationship between knowledge, attitudes and behavior has been a subject of interest for researchers for several decades in various fields of study. However, an inconsistency has been found from one study to another with literature showing inconclusive and inconsistent results regarding the relationship between knowledge, attitudes and behavior in general and purchase of eco-conscious apparel in particular. Literature also found perceived characteristics of innovation (PCI) to significantly influencing innovation adoption. However, research investigating the influence of eco-conscious apparel knowledge (EAK) and eco-conscious apparel attitudes (EAA) on intention to purchase eco-conscious apparel (IPEA) that includes PCI has not been conducted in any previously published studies. Therefore, the purpose of this study was to investigate the influential relationship between EAK-EAA-IPEA to understand if including PCI strengthens the inconsistent link between knowledge, attitudes and behavior as well as enhances the predictability of IPEA. The model of stages in the innovation-decision process developed by Roger’s (1983) in the diffusion of innovation theory was used as a theoretical framework for developing the model of innovation-decision process for eco-conscious apparel. Specifically, the three product characteristics used in this current study were based on the PCI (i.e., complexity, compatibility and relative advantage) explained by Rogers (1983) in his model. Two objectives were developed and tested using six research questions and pertinent hypotheses. The research relied on quantitative analysis of responses from 592 respondents to an online survey with eco-conscious knowledge, attitude and behavior questions pertaining eco-conscious apparel products. Hierarchical regression analysis, t-test and correlation analysis reveal that, inclusion of PCI significantly strengthened relationship between EAK-EAA-IPEA and also enhanced the predictability of IPEA; the ability to predict IPEA as well as strength of the link between EAK-EAA-IPEA was greater when more information was provided about eco-conscious apparel than less information; respondents have limited EAK; EAK was not a good predictor of IPEA; EAA was found to significantly predict IPEA; highly innovative respondents perceive eco-conscious apparel less complex and highly compatible and are more likely to purchase eco-conscious apparel; all three PCI were found to significantly predict IPEA; demographic variables were found to be related to only certain variables in this study.

Master of Science / Department of Communications and Agricultural Education / Jason D. Ellis / Agricultural sustainability is a growing concern for the general public because of agriculture’s considerable use of land, water, and other natural resources. In response to this growing concern, companies have started to publish sustainability reports to highlight sustainable practices. The purpose of this study was to examine the role of sustainability reporting from companies in the agri-food supply chain. The research objectives of this study were (1) determine the prevalence of sustainability reporting among food system companies, (2) identify, to what extent, the three components of the triple bottom line model are represented in sustainability reports, (3) determine if/how sustainability reporting differs among sectors of the agriculture supply chain, (4) assess how companies describe stakeholder engagement in sustainability reports, and (5) explore which aspects of reputation are included in sustainability reports. In total, 66 agribusinesses were included in this study of which 16 had published sustainability reports. Data for the quantitative content analysis were collected using a scorecard based on the Global Reporting Initiative (GRI) guidelines. Results indicated that sustainability reporting is limited among companies involved in the agriculture and food supply chain. Though better than sectors studied in previous research, agribusinesses also struggle to explain stakeholder engagement and need to focus sustainability report content to align more closely with the three components of the triple bottom line model – environment, economic, and social.

Master of Science / Department of Architectural Engineering and Construction Science / Fred Hasler / This paper discusses a brief history of electricity, specifically alternating current (AC) and direct current (DC), and how the current standard of AC distribution has been reached. DC power was first produced in 1800, but the shift to AC occurred in the 1880’s with the advent of the transformer. Because the decisions for distribution were made over 100 years ago, it could be time to rethink the standards of power distribution. Compared to traditional AC distribution, DC microgrids are significantly more energy efficient when implemented with distributed generation. Distributed generation, or on-site generation from photovoltaic panels, wind turbines, fuel cells, or microturbines, is more efficient when the power is transmitted by DC. DC generation, paired with the growing DC load profile, increases energy savings by utilizing DC architecture and eliminating wasteful conversions. Energy savings would result from a lower grid strain and more efficient utilization of the utility grid. DC distribution results in a more reliable electrical service due to short transmission distances, high service reliability when paired with on-site generation, and efficient storage. Occupant safety is a perceived concern with DC microgrids due to the lack of knowledge and familiarity in regards to these systems. However, with proper regulation and design standards, building occupants never encounter voltage higher than 24VDC, which is significantly safer than existing 120VAC in the United States. DC Microgrids have several disadvantages such as higher initial cost due, in part, to unfamiliarity of the system as well as a general lack of code recognition and efficiency metric recognition leading to difficult certification and code compliance. Case studies are cited in this paper to demonstrate energy reduction possibilities due to the lack of modeling ability in current energy analysis programs and demonstrated energy savings of approximately 20%. It was concluded that continued advancement in code development will come from pressure to increase energy efficiency. This pressure, paired with the standardization of a 24VDC plug and socket, will cause substantial increases in DC microgrid usage in the next 10 years.

Master of Science / Department of Biological and Agricultural Engineering / Donghai Wang / Algae proteins have similar amino acid compositions as conventional plant proteins, and are comparatively richer in the essential amino acids. Algae protein has the potential to be used in the development of a wide variety of products, including foods, animal feeds, bioplastics, and adhesives. The utilization of algae protein for value-added products would increase the economic feasibility of algae biodiesel. This research evaluated the adhesion, rheological, morphological, and thermal properties of adhesives made from algae protein extracted from Cladophora sp. and modified with either sodium hydroxide (pH 9, 10, 11) or sodium dodecyl sulfate (SDS, 0.5, 1, and 3%). Both alkali-modified and SDS-modified algae protein adhesives displayed improved dry shear strength compared to unmodified algae protein. However, only 3% SDS-modified algae protein significantly improved the water resistance as shown in wet and soak shear strength tests. Thermal analysis using differential scanning calorimetry showed that SDS modification caused complete denaturation of the algae protein. SDS modification also increased the viscosity of the adhesive and created rougher particle surface texture. These data suggest that SDS modification can effectively increase shear strength and water resistance of algae protein adhesives caused by protein denaturation and protein structure change.