Digital Commons Network^™

Comparing Multiple Methods Of Eye Tracking For Packaging, David Bradford Cottrell

All Theses

The technology to understand consumer behavior through eye tracking is becoming more affordable and accessible. When eye tracking is applied within a retail environment, packaging can be evaluated based on the amount of attention obtained. For companies developing products or designing packages, the results of eye tracking could help estimate the likelihood a package will be selected over competitors, what design attributes attract the most attention or how shelf placement impacts sales. Using a physical retail environment with tangible stimuli allows participants to be fully immersed and follow normal shopping behaviors. However, many eye tracking studies are conducted in a …

The Cellular And Molecular Characterization Of Essential Hypertension Using Innovative Pathology Models, Joshua T. Rodriguez

All Theses

Essential hypertension, characterized by elevated blood pressure levels, is a primary risk factor for other cardiovascular diseases. There has been a drastic rise in the amount of people who have essential hypertension; trends predict that 1.56 billion people worldwide will be living with essential hypertension by 2025. Anti-hypertensive drugs lower elevated blood pressure levels, but do not eliminate the disease itself or reverse the structural damage to arteries. This study aims to elucidate hypertension-induced endothelial cell (EC) dysfunction using a blood vessel tissue engineering approach as a pathology model. In order to characterize EC dysfunction, the FlexCell® system was used …

Sensor Based Nitrogen Management For Corn Production In Coastal Plain Soils, Nicholas G. Rogers

All Theses

The first objective of this project was to develop, refine, and employ sensor-based algorithms to determine the mid-season nitrogen requirements for the production of irrigated corn in Coastal Plain soils. The second objective of this project was to develop an “on-the-go” variable rate nitrogen application system. One (1) production field at Clemson’s Edisto Research and Education Center in Blackville, SC was used in the development and refinement of the sensor-based algorithm. This field was equipped with overhead irrigation, and was used in both the 2015 and 2016 growing seasons. The crop was not under scheduled irrigation, the overhead (lateral) irrigation …

Cell Source Optimization For Cardiac Tissue Engineering, Joshua Biggs

All Theses

Myocardial infarction (MI) is one of the leading causes of death associated with cardiovascular disease affecting approximately 735,000 Americans each year. The resulting damage caused by MI initiates a pathological progression towards congestive heart failure. Donor shortages rule out transplantation as a viable treatment option and coronary revascularization does not solve the issue of regenerating the infarct scar. Stem cell therapies, however, show great potential, but have been largely unsuccessful at regenerating diseased myocardium. This study aims to differentiate human adipose derived stem cells (hADSCs) by methods of co-culture and chemical induction to produce functional cardiomyocytes, as well as by …

Connected Vehicles At Signalized Intersections: Traffic Signal Timing Estimation And Optimization, S. Alireza Fayazi

All Dissertations

Summary: While traffic signals ensure safety of conflicting movements at intersections, they also cause much delay, wasted fuel, and tailpipe emissions. Frequent stops and goes induced by a series of traffic lights often frustrates passengers. However, the connectivity provided by connected vehicles applications can improve this situation. A uni-directional traffic signal to vehicle communication can be used to guide the connected vehicles to arrive at green which increases their energy efficiency; and in the first part of the dissertation, we propose a traffic signal phase and timing estimator as a complementary solution in situations where timing information is not available …

Development Of Stable Extractive Scintillating Materials For Quantification Of Radiostrontium In Aqueous Solutions, Ayman F. Seliman

All Theses

Strontium-90 is a fission product, and it is produced with a yield of about 6%. Strontium-90 is a major radionuclide in spent nuclear fuel, high-level radioactive wastes resulting from the processing of spent nuclear fuel, and radioactive wastes associated with the operation of reactors and fuel reprocessing plants. In addition to the four stable isotopes naturally present in soil, 90Sr is present in surface soil around the world as a result of fallout from past atmospheric nuclear weapons tests. Strontium-90 is relatively mobile and can move down with percolating water to underlying layers of soil and into groundwater. The maximum …

Suture Training Device With Computer Vision Based Information Acquisition, Anand Jagannathan

All Theses

Growth in surgical technology has given rise to numerous innovative methods to perform surgery and every surgery involves certain skills that have different learning curve. Due to significant growth in medical problems that involves surgery, there is a greater demand for good surgeons. Therefore there is a need to train aspiring surgeons into becoming an expert. Surgical training has undergone a drastic change in recent years with the advent of simulation based training, which allows novice surgeons to train and acquire essential surgical skills before performing an actual surgery. With the goal of objectively evaluating the level of expertise of …

A Critical Analysis Of Factors That Contribute To Maasai Land Appropriation: The Case Of Maasai Land Appropriation In Kajiado And Narok Counties In Kenya, Ben R. Koissaba

All Dissertations

The aim of this case study was to analyze events, practices, laws, and decrees that have contributed to Maasai land appropriation and acquisition from the perspective of the Maasai in order to make policy recommendations. This case study was both intrinsic (how the Maasai understood the situation of land appropriation and acquisition) and instrumental (what can others learn from the situation of the Maasai).

This study used a form of qualitative research known as a case study. This particular study uses both intrinsic and instrumental case study designs (Denzin and Lincoln, 2006, Stake, 1995). The goal of the intrinsic component …

Mitigating Risks Of Oil Sands Process Affected Water Using Hybrid Constructed Wetland Treatment Systems, Andrew David Mcqueen

All Dissertations

Mining leases in the Athabasca Oil Sands (AOS) region produce extensive volumes of oil sands process-affected water (OSPW) containing constituents that limit beneficial uses, including discharge into receiving aquatic systems. The aim of this research is to provide a scalable approach using hybrid constructed wetland treatment systems for the mitigation of problematic constituents in OSPW. In the first experiment in this dissertation, OSPW was characterized to identify constituents of concern (COCs) using chemical, physical, and toxicological analyses. Following identification of COCs, bench-scale manipulations (termed process-based manipulations [PBMs]) were used to remove or alter “classes” of COCs in an effort to …

Affordance-Based Design Product Evolution Using Customer Feedback, Ivan Mata

All Dissertations

Designers can benefit from involving the user in the product development process. Understanding how users perceive products can help designers make decisions that better accommodate user needs. Though several methods have been created that involve the user at different stages of the design process, there is still no clear connection between user perceptions and product improvements. Affordance Based Design (ABD) provides the theoretical background needed to explore such connections. ABD is a systematic de-sign method that uses the concept of affordances to describe the interactions between users and products. The integration of ABD and genetic algorithms (GAs) is proposed as …

Genetic Study Of Grain Yield And Quality Traits In Sorghum, Richard E. Boyles Iii

All Dissertations

Farming begins with a seed, and having the proper genetics within that seed to match the environment and management practices is critical. Plant breeders can be more effective at tailoring crop cultivars and hybrids when the genetic mechanisms of key traits are understood. The scope of this study was to investigate the natural diversity, genetic regions, and individual genes that are associated with components of grain yield and quality in sorghum [Sorghum bicolor (L) Moench]. These traits were characterized in different environments, years, and populations to observe the variation and interactions that exist and allow for genome-wide association studies (GWAS) …

Evaluation Of 1,4-Dioxane Biodegradation Under Aerobic And Anaerobic Conditions, Francisco J. Barajas Rodriguez

All Dissertations

Used mainly as a solvent stabilizer, 1,4-dioxane is present at many sites contaminated along with chlorinated solvents and other chemical compounds. Considered a probable human carcinogen by the U.S. Environmental Protection Agency, this contaminant has raised considerable concerns because of its potential adverse effects on health. Therefore, remediation of 1,4-dioxane has gained importance, and although there are several approaches for its treatment, such as ex situ physicochemical processes, bioremediation is a key alternative because it is a low energy demanding process. Anaerobic conditions are present at most contaminated sites, however, there is insufficient scientific evidence for anaerobic biodegradation of 1,4-dioxane. …

Using Soil Conditioners To Improve Soil Physiochemical Properties And Agricultural Productivity In Libya, Gandura Abagandura

All Dissertations

The results of Libyan agricultural review confirmed that soil degradation and limited freshwater resources are the primary causes of the country’s dependence on food imports. The intrusion of the seawater into the groundwater is causing soils to become salt-affected. In addition, many crops in the country are susceptible to pests. The spatial distribution of soil degradation occurrence and type were predicted using regression models, estimating that 666 882 km2 (53.5 %) of Libyan soils are degraded with 46.4 % due to salinization, 6.4 % water erosion and 0.66 % wind erosion.

The majority of the soils in Libya are sandy …

Fluorescent Methods For Investigating Metabolic Processes In Trypanosoma Brucei, Sheng Lin

All Dissertations

Trypanosoma brucei is a unicellular kinetoplastid protozoan that is the causative agent of Human African Trypanosomiasis, or Sleeping Sickness. Combating these protozoan pathogens presents an ongoing challenge due to their efficient immune evasion strategies, lack of effective vaccines, poor drugs and emerging drug resistance, and the general lack of knowledge of their unique biological processes. Among one of the most important biological pathways for kinetoplastid protozoans is the synthesis of ATP from glucose within glycosome organelles. Glycosomes are related to mammalian peroxisomes, but differ in having a fully compartmentalized glycolysis pathway in addition to basic peroxisomal functions. While equivalent processes …

Release And Degradation Of Microcystin-Lr Following Exposures Of Microcystis To Copper-Based Algaecides, Kyla Iwinski

All Dissertations

Microcystins (MCs) are hepatotoxic endotoxins produced by cyanobacteria such as Microcystis that can cause both ecological and human health risks, as well as economic losses in freshwater resources. The use of copper-based algaecides to manage MC-producing cyanobacteria is sometimes limited due to perceived risks of MC release from cyanobacterial cells and persistence of toxins in water resources. The aim of this research was to investigate the influence of copper concentration and form on MC release and persistence, as well as potential consequences of “no-action” management decisions (i.e. no treatment). To achieve these objectives, a tiered approach was employed utilizing both …

Solutions To Spatial And Computational Challenges For Large-Landscape Conservation Planning, Paul Leonard

All Dissertations

Systematic conservation planning is a fertile scientific discipline capable of examining global natural resource threats including land cover conversion, habitat fragmentation, biodiversity loss, and climate change. Many of these threats are acting in concert to accelerate the rate of change which increases the urgency of action. The scale of these changes creates unique spatial analysis and computational challenges. This study was designed to address several of these challenges pertaining to the analyses of publically protected areas, habitat connectivity, and private lands conservation. I examine how using high-throughput and high-performance computing helps conservation practitioners ask and solve larger ecological questions. I …

Understanding The Transcriptional Landscape Of Chinese Hamster Ovary (Cho) Cell Lines Using Next-Generation Sequencing Technology, Rna-Seq, Under Industrially Relevant Conditions, Yogender Kumar Gowtham

All Dissertations

Recombinant therapeutic proteins are widely used to treat life-threatening diseases including cancer. Chinese hamster ovary (CHO) cells have been used for over 25 years in the biopharmaceutical industry to produce recombinant therapeutics, where CHO cells produce almost one in three of the manufactured recombinant therapeutics. CHO cell lines are the preferred host for protein expression due to their ability to produce human-compatible protein glycosylation, mediate protein folding, ease of culturing in large-scale bioreactors and protein expression stability. However, several limitations exist in CHO cell bioprocessing, including low protein yields, resulting in high market prices of the biopharmaceuticals. Understanding of CHO …

Examining The Effects Of Interaction Fidelity On Task Performance And Learning In Virtual Reality, Jeffrey Wayne Bertrand

All Dissertations

Virtual reality training applications are becoming more widespread as hardware costs for head-mounted displays (HMDs) and tracking technology decrease, enabling a wide variety of interaction techniques beyond the mouse and keyboard. Advancements in VR hardware yield higher levels of interaction fidelity or the objective degree of exactness with which real-world interactions can be reproduced in an interactive system. Despite the growing use of virtual reality simulations for training, few prior investigations have examined the constituent components of fidelity and how they affect performance and learning in the context of a real-world skills training applications. With tracking and HMD technology reaching …

The Tiger Vol. 110 Issue 38 2016-11-21, Clemson University

Tiger Newspapers 2016

No abstract provided.

The Digital “Lure”: Small Businesses And Pokémon Go, Jordan Frith

Publications

Most of the discussion about Pokémon Go has focused on the end-user and the playful nature of the game. Experts have mentioned the game’s commercialism, but they have done so mostly by talking about the data collection practices of the app developers. This commentary piece takes a different approach by examining how businesses have used Pokémon Go’s “lures” to attract foot traffic. The main goal of the article is to show how the ludic, digital wayfaring of location-based games can be used by individual places to attract players. While the focus is on business owners, I will also address …

The Tiger Vol. 110 Issue 36 2016-10-24, Clemson University

Tiger Newspapers 2016

No abstract provided.

The Tiger Vol. 110 Issue 34 2016-10-14, Clemson University

Tiger Newspapers 2016

No abstract provided.

Staff Senate Minutes, 2016 October 11, Clemson University

Staff Senate Minutes

No abstract provided.

The Tiger Vol. 110 Issue 33 2016-10-03, Clemson University

Tiger Newspapers 2016

No abstract provided.

Fy2017 All Salaries Over $50,000, Clemson University

Salary Reports

No abstract provided.

Fy2017 All Salaries $30-50,000, Clemson University

Salary Reports

No abstract provided.

50th Anniversary Celebration: Films Set In The 60s Display, Maggie Mason Smith

Presentations

No abstract provided.

The Tiger Vol. 110 Issue 30 2016-09-12, Clemson University

Tiger Newspapers 2016

No abstract provided.

2016 Annual Accountability Report, Clemson University

Accountability Reports

Clemson University's 2015-2016 Annual Accountability Report submitted to the South Carolina Budget and Control Board.

2016 Summary Report On Institutional Effectiveness, Clemson University

Institutional Effectiveness Reports

No abstract provided.