Digital Commons Network^™

An Empirical Study On Return To Education In Urban China, Jin Han

All Theses

This study uses the most recent household survey data from 2007 to estimate return to education in urban China. Most existing literature are based on the data from 1990s and early 2000s and find that the rate of return to education in urban China has experienced a rapid increase. This study investigates whether the return to education is still in an increasing trend in later 2000s and how the return to education changed in recent years. The estimates of return in this study are lower than the findings in early 2000s. The higher education expansion started in 1999 made unbalance …

Effect Of Bromelain On Duck Breast Meat Tenderization, Ahmet Buyukyavuz

All Theses

ABSTRACT This study was conducted to determine the effect of bromelain on duck breast meat tenderization. Duck breasts were marinated with different concentrations (0, 1.5, 3 and 4.5%; C2, B1.5, B3 and B4.5, respectively) of bromelain and a solution composed of 92% refrigerated water, 6% salt and 2% sodium tripolyphosphate by using a vacuum food tumbler machine. A second non-marinated control (C1) was also included. Marination tumbling was operated at 8 RPM for 8 minutes. Physico-chemical and quality parameters were determined on raw and cooked samples. A significant reduction (p<0.05) in pH was observed in all bromelain treated samples when compared to C2. Although there was a significant reduction in pH of B1.5 when compared to C1, there was no significant difference among B3, B4.5 and C1. A significant increase was observed in water holding capacity of B3 and B4.5 when compared to C1. While a significant reduction was observed in lightness (L*), no differences were observed in redness (a*) and yellowness (b*) values of marinated samples (C2, B1.5, B3 and B4.5) when compared to C1. However, a significant increase in lightness (L*), and a significant decrease in redness (a*) and yellowness (b*) were observed in cooked bromelain treated samples. No differences were observed in razor shear forces, moisture content and water activity between treatments. There was no significant difference in cook yield of all marinated samples (C2, B1.5, B3, and B4) when compared to the C1. A significant reduction (p<0.05) in Warner-Bratzler shear force values was observed in all marinated samples when compared to untreated control (C1). Based on results, use of bromelain in marination solutions under the conditions tested here would not be cost effective.

Comparison Of Simultaneous Distillation And Extraction (Sde) And Headspace Solid Phase Microextraction (Spme) For Determination Of Volatiles Of Muscadine Grapes (Vitis Rotundifolia), Pei-Ching Lin

All Theses

Vitis rotundifolia also called 'Muscadine' grows abundantly throughout the southeastern United States. Muscadine grapes have desirable flavors, making them suitable to be either consumed as fresh fruit or made into wine and jam. Moreover, muscadine grapes have been reported containing rich complex phytochemicals, including anthocyanins and polyphenols that possess antioxidant, anti-cancer, anti-inflammatory and antimicrobial activities. Therefore, muscadine grapes have become increasingly popular in recent years due to its unique aroma, as well as health benefits. Various volatile compounds contribute to the aromatic flavors of muscadine grapes. In regards of their low concentrations, conventional simultaneous distillation and extraction (SDE) and solid …

Mobile Interactive Fitness Technologies And The Recreational Experience Of Bicycling: A Phenomenological Exploration Of The Strava Community, William Smith

All Theses

Technology is now embedded in many aspects of daily life. Over the past few years, fitness related smartphone applications have steadily grown in popularity. Despite the prevalence of technology in recreation and leisure experiences, the topic remains to be thoroughly examined from a qualitative interpretive viewpoint. The purpose of this phenomenological study was to understand and describe how cyclists use and experience Strava--a GPS enabled smartphone application that tracks bicycle rides and uploads the data to an online community of other users. Particular attention was given to user motivations, affordances of the technology, and notions of community. After participant observation …

A Study Of Time-Based Features And Regularity Of Manipulation To Improve The Detection Of Eating Activity Periods During Free Living, Jose Reyes

All Theses

This thesis considers the problem of detecting when people eat by tracking their wrist motion. The goal of this work is to automatically detect the start and stop times of these eating activities. It builds upon previous work done by our research group, which developed an algorithm for automatically detecting peaks in activities associated with food preparation and clean-up. This peak detector is then used for segmenting data. These segments are then classified as eating or non-eating activities using a naive Bayes classifier based on probabilities obtained from computing different features in each segment. The original work introduced 4 features, …

Using Hidden Markov Models To Segment And Classify Wrist Motions Related To Eating Activities, Raul Ramos Garcia

All Dissertations

Advances in body sensing and mobile health technology have created new opportunities for empowering people to take a more active role in managing their health. Measurements of dietary intake are commonly used for the study and treatment of obesity. However, the most widely used tools rely upon self-report and require considerable manual effort, leading to underreporting of consumption, non-compliance, and discontinued use over the long term. We are investigating the use of wrist-worn accelerometers and gyroscopes to automatically recognize eating gestures. In order to improve recognition accuracy, we studied the sequential ependency of actions during eating. In chapter 2 we …

Effects Of Instrumentation On Dental Microwear Textures: Reanalysis And Augmentation Of An Early Hominin Sample, Anna Jacquelyn Ragni

Graduate Theses and Dissertations

Dental microwear texture analysis has been refined to a methodology relying upon scanning confocal microscopy for its advantages of repeatability and standardized quantification. A new instrument, the Plu Neox (Sensofar Corp.) confocal profiler recently entered the market, sparking questions among dental anthropologists related to the advantages and efficacy of this new technology, which has better resolution and lighting properties than previously available white-lighted based confocal profilers. This thesis reports on three complementary studies that set out to evaluate the comparability of the Plu Neox to the Plu Standard system and assess its ability to distinguish primates on the basis of …

Investigations Into Sensory Ecology And Gene Evolution Of The Pea Aphid (Acyrthosiphon Pisum), Swapna R. Purandare

School of Biological Sciences: Dissertations, Theses, and Student Research

Organisms use environmental cues to gather information required to perform activities that are essential for their survival and reproduction, such as searching for food, avoiding danger, and finding mates. They respond to the acquired information by changing their behavior or physiology, which may result in increased fitness. Due to the fundamental importance of information in an organism’s life, it is important to understand its acquisition, processing, and the organism’s response to it. In the work presented here, we used the pea aphid (Acyrthosiphon pisum), an insect that produces multiple phenotypes, or morphs, that are genetically identical, but differ …

Plasticity In Female Mate Choosiness: A Result Of Variation In Perceived Predation Risk And The Interaction Of Female Age And Male Density, Ashley N. Atwell

School of Biological Sciences: Dissertations, Theses, and Student Research

In many species, female mate choices can be a strong source of sexual selection. Females often prefer a certain male phenotype, and this can be due to benefits females gain from mating with preferred males. However, such benefits can sometimes be outweighed by the cost of searching for a preferred male. These costs and benefits often change concomitantly with changes in environmental (e.g., predator abundance and conspecific density) and internal factors (e.g., female age). Thus, female mate choosiness (the degree to which preferences for certain males are expressed) should often be plastic. Plasticity in female mate choosiness may be complicated …

From Competition To Facilitation: Mechanisms Of Species Interactions In A Novel World, Erin E. Tansey

Biology Honors Theses

Invasive species outcompete and displace native species through competition and are an enormous threat to biodiversity. Theories designed to explain mechanisms of plant species competition have been in development over the last ninety years. Nonetheless, understanding why invasive species are competitively superior remains elusive. This is likely due to the fact that invasive species do not conform to traditional assumptions made in competition models. In this study, we focus on three species found in competition in grassland ecosystems of much of the US Great Plains. The species include the non-indigenous, invasive, C4, perennial grass King Ranch bluestem (Bothiochloa ischaemum (L.) …

May 2014 Commencement Program, Bowling Green State University

Commencement Programs

No abstract provided.

Scalable, Solar Powered Membrane-Based Water Purification Systems For Community Development In Developing Countries, Yung Wong

Doctoral Dissertations and Master's Theses

This manuscript style thesis presents a community development model developed at Embry-Riddle Aeronautical University (ERAU) to deliver sustainable water purification systems and originate a companion micro-business to sell excess clean water in communities in Haiti. Since 2010, students and faculty from ERAU have partnered with strategic partners to not only provide clean water to their in-country operations but also provide an opportunity for economic growth through a clean water selling micro-business. Water, sanitation, and hygiene (WASH) training is also implemented to aid in community buy-in. Lessons learned from the history of foreign aid to developing countries is taken into account …

Social Activism With Extra Sauce: How Food Communication Increases Political Awareness In Social Media, Amy Demello

Honors Theses - Providence Campus

This project explores the combination of social media and food communication and challenges the prevailing belief that food on social media is trivial, frivolous, and unmeaning. This paper will explain why social media, as well as food communication, are both influential and powerful tools for activism. To prove this, I analyze Twitter posts through Storify. Ultimately, I draw conclusions about the influence of food in activism on social media. The lack of and restrictions on data available are discussed as examples of how valuable and crucial this information is, ultimately displaying that social media is not as democratic as currently …

Just Eat It: An Examination Of The Sociological Factors That Influence The Eating Habits Of College Students, Alexandra Minnick

HIM 1990-2015

Young adults 18-25 years of age in the United States are experiencing a new world as they transition to young adulthood in college. The purpose of this investigation is to examine the eating behaviors of the young college population. The present study will examine the kinds of foods college students eat and how they make decisions regarding food consumption. The methodology of the present study consists of a quantitative survey, which includes questions about gender, living arrangements, convenience, and student eating habits. The sample size is comprised of 228 students at the University of Central Florida. A regression model is …

Assessment Of Red Blood Cell Membrane Fatty Acid Composition In Relation To Dietary Intake In Patients Undergoing Cardiac Catheterization, Nicole S. Litwin

Electronic Theses and Dissertations

Red blood cells (RBC) have been shown to mediate plaque development seen in coronary artery disease (CAD). This study determined whether differences in RBC fatty acid (FA) composition were related to CAD risk. FAs were extracted from RBCs of 38 individuals who have undergone cardiac catheterization, 9 of whom had obstructive CAD, and analyzed via gas chromatography. Ferric reducing ability of plasma (FRAP) assay was used to determine oxidative stress. Food frequency questionnaires were used to correlate RBC omega-3 FA to daily intake of omega-3 FA. No correlation was found between RBC content and intake of omega-3 FA. FRAP values …

The Effectiveness Of The Implementation Of The Kids Eat Right Rd Parent Empowerment Program At Johnson City Head Start Centers, Emily M. Stern

Electronic Theses and Dissertations

Obesity among children is a public health concern. Preschool-­‐aged children, especially those from low-­‐income families, are no exception to the obesity epidemic. During the RD Parent Empowerment Program, parents of Head Start children in Johnson City, TN completed a structured education program over the course of 4 workshops related to healthy habits of families. The goal was to empower parents to shop smart, cook healthy, and eat right. The Family Nutrition and Physical Activity (FNPA) screening tool was used as an assessment tool to evaluate behavior change over the course of the program. Improvement in overall FNPA score was …

Achievement Of Elementary School Students And Attendance In Preschool Programs In Johnson County, Tennessee, Emogene C. South Mrs.

Electronic Theses and Dissertations

The purpose of this study was to determine if a difference in achievement scores exist between students who attended the Johnson County School System preschool program and those who did not as measured by standardized TCAP achievement test Reading/Language Arts and Math scores of students in the third and fourth grades. The variables of grade level and preschool attendance were considered. The population consisted of students who were in the third or fourth grades in the Johnson County School System during the 2010-2011 school year through the 2012-2013 school year. Data gathered were from the Tennessee Comprehensive Assessment Program achievement …

Vitamin D Status Of College Students: Implications For Health Leaders, Eileen M. Cress

Electronic Theses and Dissertations

Vitamin D deficiency is considered to be a pandemic with implications for compromised bone health and other chronic diseases. Few studies have examined vitamin D status in college-aged individuals where prevention of future health consequences is still possible. Serum vitamin D 25(OH)D status and vitamin D intake were examined in 98 college students ages 18-29 years during winter. BMI was classified as < 25and 25 or greater. Race was categorized as Caucasian or other. Overall, 69.5% had suboptimal serum vitamin D levels, <30ng/mL. Only 8 students (8.2%) met the EAR (400 IU) per day for vitamin D intake. t tests were used to determine if there were significant differences in serum vitamin D level and dietary intake based on gender, race and BMI. Significant differences were found in serum vitamin D level when compared by gender and race. Females tended to have a higher serum vitamin D level than males. Those representing minorities had lower serum vitamin D levels than Caucasians; One hundred percent of the minority students had suboptimal serum vitamin D levels. Based on these findings, dietitians should increase efforts to target college-aged individuals in educational programming related to factors affecting vitamin D synthesis, vitamin D intake, and health consequences of suboptimal vitamin D status, particularly in winter. Consideration should be given to vitamin D fortification of foods that meet the preferences of today’s consumer.

Portion Size Selection In Relation To Hemoglobin A1cs, Brian L. Dixon

Undergraduate Honors Theses

Obesity has been recognized as an increasing issue within our country. Obesity contributes to many health related issues, including type 2 diabetes mellitus. Portion size is a factor that has generated clinical research interest. The aim of this study was to determine if there was a relationship between management of diabetes measured by hemoglobin A1c and portion size selection for type 2 diabetics. In this study, subjects selected portion sizes of four different foods. Data were compared to recent A1c levels. Due to the small sample size, nonparametric statistical analysis was used. The relationship of grain portion weight selection and …

The Johnson City Community Health Center: A Qualitative Analysis Of The Center's Strengths, Weaknesses, Opportunities, And Threats In Johnson City, Tennessee, Enrique A. Cruz Enriquez

Undergraduate Honors Theses

The Johnson City Community Health Center is one of over 1200 community health centers serving over 22 million patients across the United States. Community health centers primarily serve patients with low income or without health insurance, but most serve all the members of their communities. These centers provide many services and treat health problems in a holistic manner in order to improve the health of their communities and also allow the members of those communities to progress. The Johnson City Community Health Center is compared to successful CHCs from across the nation to determine if it has characteristics to be …

Examining General Versus Condition-Specific Health Related Quality Of Life Across Weight Categories In An Adolescent Sample, Autumn G. Dalton

Undergraduate Honors Theses

Approximately 34% of adolescents are overweight or obese which can be accompanied by physical, psychosocial, and economic consequences. Increasingly, pediatric overweight/obesity research has focused on Health Related Quality of Life (HRQoL) as a health outcome. This study examined differences in HRQoL across weight categories in adolescents, specifically, the sensitivity of using a general versus condition-specific measure. Further, the influence of gender was explored.

Data were extracted from Wave 2 of Team Up for Healthy Living, a school-based obesity prevention program targeting adolescents in Southern Appalachia. Participants (N = 918; 50% Female; 93% Caucasian; 90% 9^th graders) completed …

The Impact Of Inappropriate Gestational Weight Gain On Pregnancy, Delivery, And Neonatal Outcomes, Morgan L. Isom

Undergraduate Honors Theses

Inappropriate weight gain during pregnancy is a widespread problem associated with adverse maternal and newborn outcomes. This study’s objective was to examine the impact of gestational weight gain (GWG) above and below the Institute of Medicine (IOM) guidelines on pregnancy, delivery, and newborn outcomes in a rural population. Women were recruited at the first prenatal visit, and data was collected through research interviews and examination of prenatal and delivery medical records. Prepregnancy weight and weight at delivery were obtained, and the final sample (n=913) was restricted to women with singleton pregnancies. Participants were categorized by prepregnancy body mass index (BMI) …

Family Environment And Severity Of Absenteeism In Youth, Rachel Marie Loftis

UNLV Theses, Dissertations, Professional Papers, and Capstones

The current study examined the relationship between family environment and severity of youth absenteeism in clinical and community settings. Previous researchers have adopted a categorical approach to investigating the role of family environment in problematic absenteeism by diving youth into discrete categories and these studies are almost exclusively conducted in clinical settings. The current study contributes to the literature by adopting a dimensional approach that examines the impact of family environment on problematic absenteeism across diagnostic and functional categories.

The first aim of the study was to determine the family environment characteristics most predictive of absenteeism severity. The first hypothesis …

Pediatric Feeding Disorders And Intervention, Courtney Bestler

Research Papers

No abstract provided.

Prison Health Care After The Affordable Care Act: Envisioning An End To The Policy Of Neglect, Evelyn Malave

Hofstra Law Faculty Scholarship

Inadequate prison health care has created a health crisis for reentering prisoners and their communities--a crisis that is exacerbated by barriers to employment and other collateral consequences of release. This Note will first examine how current Eighth Amendment doctrine has failed to sufficiently regulate prison health care so as to have any significant effect on the crisis. Next, it will argue that the Affordable Care Act (ACA) alters the Eighth Amendment analysis by triggering a change in the "evolving standards of decency" that guide the doctrine. Specifically, this Note will argue that, after the passage of the ACA, releasing sick, …

Pilot Study: Avoiding Readmissions Of Heart Failure Patients Across Transitions Of Care, Analiza Baldonado

Doctoral Projects

Background: A major problem facing the U.S. healthcare system is avoidable hospital readmissions. Patients with Heart Failure (HF) face variety of barriers to health care and are at higher risk for readmissions. To address this problem, evidence-based interventions focused on safe transition from hospital to home are needed.

Methods: A quality improvement pilot project was implemented to evaluate the feasibility of evidence based interventions in preventing avoidable readmissions. The project setting was in a 900 bed health care system. The descriptive statistical methods were means and frequencies. The Transition Coordinator (TC) enrolled a convenience sample of 30 participants. The evidence …

Land As Power, An Analysis Of Female Land Inheritance And Intrahousehold Bargaining In Rwanda, Eric Adebayo

Master's Theses

Do increased levels of female land inheritance lead to increases in female intrahousehold bargaining power? Analysis of an expansive Rwandan household survey dataset from 2010-2011 suggests that female land inheritances are positively associated with female intrahousehold bargaining power. The results support the relative efficacy of intrahousehold bargaining models over that of unitary household models. The findings have implications for Rwandan lawmakers debating changes to the country's “Succession law” which makes gender discrimination in land inheritance illegal. This is the first paper of its kind to estimate female land inheritance's effect on bargaining power in Rwanda.

Structural Change Of The Western United States Alfalfa Hay Market And Its Effect On The Western United States Dairy Industry, Joseph Patrick Cann

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Alfalfa is the fourth largest commodity grown in the Western U.S., representing 20% of the crop acreage over the past twenty years. In the last five years alfalfa hay price has doubled from what it was previously, indicating a possible structural change in the market. This research project was completed to test for this structural change using econometric analysis of the important demand components of alfalfa price. In addition to this, simulations of an average Utah dairy were completed to examine which ratio of forage crops provided the highest economic return to the operation.

To analyze the structural change of …

Nutrient Utilization, Lactational Performance, And Profitability Of Dairy Cows By Feeding Protein Supplements In High-Forage Lactation Diets, Kathryn Neal

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Due to the increasing cost of soybean meal and concerns of excess N being excreted into the environment, new protein supplements have been developed. Two products that have shown potential in increasing N utilization efficiency are slow release urea (SRU; Optigen) and ruminal escape protein derived from yeast (YMP; DEMP). The objective of this study was to assess the effects of feeding these 2 supplements in high-forage [(54% of total dietary dry matter (DM)] dairy diets on nutrient utilization, feed efficiency, lactational performance of dairy cows, and their impacts on income-over feed costs. Twelve …

Analysis Of Building Resiliency In An Ethiopian Pastoral System: Mitigating The Effects Of Population And Climate Change On Food Insecurity, Brigham Forrest

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Worldwide expenditures on international development in the form of assistance or “aid” have continued to increase as developed countries look to both help and influence developing countries. In 2011, more than $140 billion in development aid was distributed globally, more than double the amount expended for international development aid in 2003. Many of the countries that are in need of aid have governments that do not have the resources, the experience, political stability, or well-functioning institutions to effect long-term structural change to bring their people out of poverty.

Ethiopia is a country receiving large amounts of development aid, and one …