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- Creators: Ira A. Fulton Schools of Engineering
- Resource Type: Text
- Status: Published
Description
The Physics and Chemistry of Surfaces and Interfaces conference has maintained a focus on the interfacial and surface properties of materials since its initiation in 1974. The conference continues to be a major force in this field, bringing together scientists from a variety of disciplines to focus upon the science of interfaces and surfaces. Here, a historical view of the development of the conference and a discussion of some of the themes that have been focal points for many years are presented.
ContributorsFerry, David (Author) / Ira A. Fulton Schools of Engineering (Contributor) / School of Electrical, Computer and Energy Engineering (Contributor)
Created2013
Description
There is an enormous unmet need for services, education, and outreach to improve women’s breast health. Healthcare systems and insurance systems vary widely around the world, and this may play an important role in understanding variability in women’s breast health knowledge and behavior globally. The goal of this study is to determine how varying healthcare systems in three countries (Japan, Paraguay, US) affect a woman’s likelihood of seeing a physician in regard to their breasts. For example, Japan is a clear example of a region that provides universal health insurance to its citizens. The government takes responsibility in giving accessible and equitable healthcare to its entire population (Zhang & Oyama, 2016). On the other hand, a country such as Paraguay is composed of both public and private sectors. In order for citizens to gain insurance, one would have to either be formally employed or choose to pay out-of-pocket for hospital visits (“Paraguay”, 2017). A country such as the United States does not have universal health insurance. However, it does have a mix of public and private sectors, meaning there is little to no coverage for its citizens. To accommodate for this, the United States came up with the Affordable Care Act, which extends coverage to the uninsured. Although the United States might be a country that spends more on healthcare than any other nation, there are residents that still lack healthcare (De Lew, Greenberg & Kinchen, 1992). This study, then, compares women’s breast health knowledge and behavior in Japan, Paraguay, and the US. Other variables, which are also considered in this study, that might affect this include wealth level, education, having general awareness of breast cancer, having regular health checks, and having some breast education. Using statistical analysis of breast check rates of women in Japan, Paraguay, and the United States, this research found that women sampled in Asunción, Paraguay check their breasts more often than either women sampled from Scottsdale, U.S. or Osaka, Japan. It was also found that women sampled from Paraguay were more confident in detecting changes in their breast compared to women sampled from the Japan or the US. Finally, it was noted that women sampled from Japan were least likely to partake in seeing a doctor in concern of changes in their breasts compared to women sampled from the other two research locations. These findings have relevance for the implementation of advocacy and public education about breast health.
ContributorsKumar, Navneet Surjit (Co-author) / Kumar, Navneet (Co-author) / Wutich, Amber (Thesis director) / Brewis, Alexandra (Committee member) / School of Human Evolution & Social Change (Contributor) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Abstract
According to the National Institute on Deafness and other Communication Disorders (NIDCD), approximately 37 million Americans suffer from some degree of hearing loss, which impacts their ability to communicate fluently with the hearing world. This number includes up to 17% of the adult population, many who have experienced post-lingual or late-deafness. While hearing loss is known to be one of the most prevalent chronically disabling sensory conditions, little is known about the impact it has on individuals’ cultural identity and sense of well-being. There is somewhat of a deficit in the research literature addressing these issues of cultural identity, especially as it relates to post-lingually deaf adults. Improved knowledge of these dimensions of hearing loss is needed—a knowledge which could lead to more effective resources for late-deafened people. Though hearing loss can be disabling, access to American Sign Language and the Deaf culture may compensate for social and cultural loss and potentially improve well-being within late-deafened individuals. Using the framework of Social Identity Theory and Neil Glickman’s Deaf Identity Development model, this study sought to identify late-deafened adults who fall into the marginal category, placing them at greater risk of becoming socially marginalized and experiencing diminished well-being. Subjective well-being was then measured by the Flourishing Scale to determine how being socially marginal may impact one’s sense of self, personal prosperity, social efficacy, and sense of social competency. Results showed that marginal individuals do experience diminished subjective well-being, a fact which should be further explored by researchers, especially in the context of developing more effective interventions and services for late-deafened individuals.
According to the National Institute on Deafness and other Communication Disorders (NIDCD), approximately 37 million Americans suffer from some degree of hearing loss, which impacts their ability to communicate fluently with the hearing world. This number includes up to 17% of the adult population, many who have experienced post-lingual or late-deafness. While hearing loss is known to be one of the most prevalent chronically disabling sensory conditions, little is known about the impact it has on individuals’ cultural identity and sense of well-being. There is somewhat of a deficit in the research literature addressing these issues of cultural identity, especially as it relates to post-lingually deaf adults. Improved knowledge of these dimensions of hearing loss is needed—a knowledge which could lead to more effective resources for late-deafened people. Though hearing loss can be disabling, access to American Sign Language and the Deaf culture may compensate for social and cultural loss and potentially improve well-being within late-deafened individuals. Using the framework of Social Identity Theory and Neil Glickman’s Deaf Identity Development model, this study sought to identify late-deafened adults who fall into the marginal category, placing them at greater risk of becoming socially marginalized and experiencing diminished well-being. Subjective well-being was then measured by the Flourishing Scale to determine how being socially marginal may impact one’s sense of self, personal prosperity, social efficacy, and sense of social competency. Results showed that marginal individuals do experience diminished subjective well-being, a fact which should be further explored by researchers, especially in the context of developing more effective interventions and services for late-deafened individuals.
ContributorsBlech, Jennifer Grace (Author) / Almasan, Oana (Thesis director) / Wutich, Amber (Committee member) / School of Human Evolution & Social Change (Contributor) / School of Politics and Global Studies (Contributor) / Barrett, The Honors College (Contributor)
Created2019-12
Description
On September 20, 2017, Hurricane Maria made landfall in Puerto Rico, triggering widespread catastrophic damage to the island. Aside from the extensive physical devastation that Hurricane Maria wielded, it also exacerbated larger underlying economic instabilities and public health challenges that the island has faced. Among these were compromised access to safe, clean drinking water and nutritious foods. While studies have primarily focused on the mortality count, health and food-behaviors post-Hurricane Maria have been rarely investigated. Documenting what Puerto Ricans drank following the natural disaster is necessary to identify changes in their consumption patterns as well as to understand how weather-related shocks influence these changes. The aim of this study was to examine sociodemographic factors associated with the consumption of sugar-sweetened beverages (SSBs) and fruit juice among a sample of Puerto Rican adults after Hurricane Maria. The data analyzed for this thesis project was derived from a larger, multi-year, academic research project known as the Global Ethnohydrology Study (GES). An improved understanding of SSB and fruit juice consumption patterns can inform effective public health interventions to reduce consumption across the island. Collecting valid, descriptive post-Hurricane Maria data would greatly help identify areas of public health need in addition to promote further studies on the risk factors to chronic diseases within the island’s context by comparing the health status situation before and after Hurricane Maria (Mattei et al., 2018). Thus, gaining insight into Puerto Ricans’ beverage consumption patterns in relation to sociodemographic and behavioral factors serves as a promising line of research with potential to help public health officials mitigate post-disaster situations and take clinically relevant action.
ContributorsLedesma, Daniela (Author) / Brewis, Alexandra (Thesis director) / Wutich, Amber (Committee member) / Dean, W.P. Carey School of Business (Contributor) / School of Human Evolution & Social Change (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
The rise in community-associated methicillin-resistant Staphylococcus aureus (MRSA) infections and the ability of the organism to develop resistance to antibiotics necessitate new treatment methods for MRSA. Geopolymers (GPs) are cheap, porous materials that have demonstrated adsorptive capabilities. In this study, GPs were investigated for their ability to adsorb whole MRSA cells and MRSA secreted proteins [culture filtrate proteins (CFPs)] as a complementary method of controlling MRSA infections. GPs have been synthesized with variable pore sizes (meso/macro scale) and further modified with stearic acid (SA) to increase surface hydrophobicity. Four GPs (SA-macroGP, macroGP, SA-mesoGP, and mesoGP) were incubated with whole cells and with CFPs to quantify GP adsorption capabilities. Following MRSA culture incubation with GPs, unbound MRSA cells were filtered and plated to determine cell counts. Following CFP incubation with GPs, unbound CFPs were separated via SDS-PAGE, stained with SYPRO Ruby, and analyzed using densitometry. Results indicate that macroGP was the most effective at adsorbing whole MRSA cells. Visual banding patterns and densitometry quantitation indicate that SA-mesoGP was the most effective at adsorbing CFP. Ultimately, GP-based products may be further developed as nonselective or selective adsorbents and integrated into fibrous materials for topical applications.
ContributorsGanser, Collin (Co-author, Co-author) / Haydel, Shelley E. (Thesis director) / Seo, Don (Committee member) / Borges, Chad (Committee member) / School of Earth and Space Exploration (Contributor) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Hygiene stigma can exist in tandem to gender stigma which could mean the marginalization of certain groups due to stigmatized identities, specifically women. The marginalization of women is important because of the United Nations Sustainable Development Goal 5: Empowering women and girls and achieving equity. Figuring out how hygiene stigma specifically affects women in Fiji required researching the effects of hygiene stigma, gender inequity and indigenous Fijian societies could influence respondents’ answers. After researching these different topics, these questions were developed: does hygiene stigma and gendered stigma have an overlap? If so, are men more biased than women when it comes to objectifying women? Do indigenous Fijian societies possess an immunity to objectifying women since are considered to have Fijian women have more agency? The data was retrieved from the Global Ethnohydrology Study from 2015-16 in the Viti Levu, Fiji, which was specifically researching whether hygiene stigma is an effective method of helping people have better hygiene norms. A thematic analysis was then conducted, and the data was coded. Based on the results from 28 respondents we were able to conclude that there is gendered stigma within Fijian populations. We found that both men and women objectified women at similar rates and Fiji is not immune to hygiene stigma. The limitations to this analysis were there was no statistical analysis to find correlations hygiene stigma and gendered stigma. There was only one specific code that was being analyzed in this research project which limits the other types of stigma that may exist.
ContributorsKibuka Musoke, Paula Kulabako (Author) / Wutich, Amber (Thesis director) / Schuster, Roseanne (Committee member) / Brewis Slade, Alexandra (Committee member) / School of Molecular Sciences (Contributor) / School of Human Evolution & Social Change (Contributor, Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Description
Research has been conducted analyzing factors that affect mental health in regions that suffer from water insecurity and water scarcity. Amber Wutich and Alexandra Brewis (2019) explain the effects that water scarcity has on mental health and how chronic worry can trigger depression, stress, anxiety and in extreme cases this can lead to suicidal thoughts. Bina Agarwal (2000) analyzes gender roles in relation to water insecurity where women express more signs of anxiety and worry due to the limited options they have when seeking water outside their household. There are limited studies done on water insecurity at a household level which limit an understanding of possible coping mechanisms along with additional factors that affect mental health. In this study, surveys are conducted in the city of San Juan Del Rio, Queretaro in Mexico where residents have been affected by massive flooding’s. Additionally, residents in Mexico not only suffer from water scarcity but also from poor water infrastructure, constant water outages, shortages, and contaminated water supply. Respondents answers (n=23) regarding the amount of worry, household size, being head of household, and gender was used to conduct paired sample statistical tests where associations were determined. Associations relating to the amount of worry resulted in the idea that residents in San Juan Del Rio because they consistently struggle with water shortages, have developed a coping strategy to deal with water outages and therefore, show fewer signs of worry when faced with a household water situation. In consideration, surveys conducted in surrounding towns and in a rural setting can provide additional information regarding how poverty is related to mental health and water scarcity along with a deeper understanding of possible coping strategies at a household level.
ContributorsRamirez Arellanes, Andrea (Author) / Wutich, Amber (Thesis director) / Brewis, Alexandra (Committee member) / School of Human Evolution & Social Change (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Learning Sparse Representations for Fruit-Fly Gene Expression Pattern Image Annotation and Retrieval
Description
Background
Fruit fly embryogenesis is one of the best understood animal development systems, and the spatiotemporal gene expression dynamics in this process are captured by digital images. Analysis of these high-throughput images will provide novel insights into the functions, interactions, and networks of animal genes governing development. To facilitate comparative analysis, web-based interfaces have been developed to conduct image retrieval based on body part keywords and images. Currently, the keyword annotation of spatiotemporal gene expression patterns is conducted manually. However, this manual practice does not scale with the continuously expanding collection of images. In addition, existing image retrieval systems based on the expression patterns may be made more accurate using keywords.
Results
In this article, we adapt advanced data mining and computer vision techniques to address the key challenges in annotating and retrieving fruit fly gene expression pattern images. To boost the performance of image annotation and retrieval, we propose representations integrating spatial information and sparse features, overcoming the limitations of prior schemes.
Conclusions
We perform systematic experimental studies to evaluate the proposed schemes in comparison with current methods. Experimental results indicate that the integration of spatial information and sparse features lead to consistent performance improvement in image annotation, while for the task of retrieval, sparse features alone yields better results.
Fruit fly embryogenesis is one of the best understood animal development systems, and the spatiotemporal gene expression dynamics in this process are captured by digital images. Analysis of these high-throughput images will provide novel insights into the functions, interactions, and networks of animal genes governing development. To facilitate comparative analysis, web-based interfaces have been developed to conduct image retrieval based on body part keywords and images. Currently, the keyword annotation of spatiotemporal gene expression patterns is conducted manually. However, this manual practice does not scale with the continuously expanding collection of images. In addition, existing image retrieval systems based on the expression patterns may be made more accurate using keywords.
Results
In this article, we adapt advanced data mining and computer vision techniques to address the key challenges in annotating and retrieving fruit fly gene expression pattern images. To boost the performance of image annotation and retrieval, we propose representations integrating spatial information and sparse features, overcoming the limitations of prior schemes.
Conclusions
We perform systematic experimental studies to evaluate the proposed schemes in comparison with current methods. Experimental results indicate that the integration of spatial information and sparse features lead to consistent performance improvement in image annotation, while for the task of retrieval, sparse features alone yields better results.
ContributorsYuan, Lei (Author) / Woodard, Alexander (Author) / Ji, Shuiwang (Author) / Jiang, Yuan (Author) / Zhou, Zhi-Hua (Author) / Kumar, Sudhir (Author) / Ye, Jieping (Author) / Biodesign Institute (Contributor) / Center for Evolution and Medicine (Contributor) / Ira A. Fulton Schools of Engineering (Contributor) / College of Liberal Arts and Sciences (Contributor) / School of Life Sciences (Contributor)
Created2012-05-23
Description
In the development of personalized medicine and many other clinical studies, biospecimen integrity serves as the prerequisite for not only the accurate derivation of patient- and disease-specific molecular data from biological specimens but the meaningful downstream validation of biomarkers. However, a large number of preanalytical variables may influence the quality of biospecimens in an undesired way and ultimately render the samples unsuitable for molecular analysis. The limited ability to directly reduce discrepancies caused by preanalytical variables gives rise to the need for development and retrospective application of appropriate tests for assessment of biospecimen integrity. Nevertheless, the most standard approaches to assessing biospecimen integrity involve nontrivial procedures. Thus, the need for quality control tools or tests that are readily applicable and can produce results in a straightforward way becomes critical. As one of the major ex vivo biomolecular degradation mechanisms, oxidation that occurs when blood plasma and serum samples are exposed to thawed states during storage and processing is hard to forestall and detect. In an attempt to easily detect and monitor the degree of oxidation, the technique of Fluorescence Resonance Energy Transfer (FRET) was examined to determine whether this concept could be employed to monitor exposure of samples to thawed conditions when controlled by spontaneous oxidative disulfide bonding. The intended mode of usage was envisioned as a fluorescence liquid being stored in a separate compartment but within the same test tube as archived plasma and serum samples. This would allow the assessment of sample integrity by direct visualization of fluorescence under a hand-held black light. The fluorescent dynamic range as well as kinetic control of the reaction were studied. While the addition of Cu(II) proved to facilitate excellent dynamic range with regard to fluorescence quenching, the kinetics of the reaction were too rapid for practical use. Further investigation revealed that the fluorescence quenching mechanism might have actually occurred via Intramolecular Charge Transfer (ICT) rather than FRET mediated by oxidative disulfide bond formation. Introduction of Cu(II) via copper metal slowed fluorescence quenching to the point of practical utility; facilitating demonstration that storing at room temperature, refrigerating or freezing the samples delayed fluorescence quenching to different extents. To establish better kinetic control, future works will focus on establishing controlled, thoroughly understood kinetic release of Cu(II) from copper metal.
ContributorsZhang, Zihan (Author) / Borges, Chad (Thesis director) / Emady, Heather (Committee member) / Williams, Peter (Committee member) / Chemical Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2018-12
Description
As obesity rates continue to rise, societal stigmas against individuals classified as "fat" or "obese" also rise. The topics of obesity, fat stigma, slim body ideals, body dissatisfaction and fat talk are all closely interwoven and are heavily influenced by countless human factors. This project attempts to find cross-cultural patterns in female self-perceptions and body preferences across nine culturally and economically diverse countries using both quantitative and qualitative analyses. The nine different countries included in this study are the United States, the United Kingdom, New Zealand, Iceland, Tajikistan, Paraguay, Guatemala, Japan, and South Korea. This study analyzes how satisfied women are with their current size and whether they feel as though they are judged for their size or shape.
ContributorsNiesluchowski, Monet Nazilla (Author) / Wutich, Amber (Thesis director) / Schuster, Roseanne (Committee member) / School of Human Evolution and Social Change (Contributor) / School of Politics and Global Studies (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05