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Geography
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Paper
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2010-2019
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UNT Scholarly Works
HIV/AIDS Morbidity in Youths and Teens, Ages 13-24, in Texas Counties
Date: April 14, 2011
Creator: Hatton, Meagan & Oppong, Joseph R.
Description: This paper discusses research on HIV/AIDS morbidity in youth and teens, age 13-24, in Texas counties. Abstract: HIV/AIDS has become a serious threat in Texas among youths and teens, and will continue to grow as a problem unless action is taken to prevent the spread of the virus. From 2002-2008, the HIV rate among youths and teens, ages 13-24, increased 38%, from 14.2 per 100,000 to 19.6 per 100,000 (Texas Department of State Health Services, 2010). Using case data provided by the Texas State Department of Health Services, this paper seeks to understand the spatial distribution of HIV/AIDS morbidity among youths and teens ages 13-24 and the variables that are significantly related to the disease. De-identified data on HIV/AIDS for Texas counties from 1999-2008 provided by the Texas State Department of Health are used as the dependent variable. Explanatory variables for this research include: race/ethnicity, level of education, percent urban population, socioeconomic factors, and prevalence of unsafe sex, which is provided by the 2000 U.S. Bureau of the Census and the 2010 County Health Ranking Texas data (Population Health Institute, 2011). Spearman’s rank correlation coefficient is used for statistical analysis. The results suggest that race/ethnicity, level of education, percent urban ...
Contributing Partner: UNT Honors College
Permallink:digital.library.unt.edu/ark:/67531/metadc94269/
Bike Rack Occupancy on the University of North Texas Campus
Date: April 19, 2012
Creator: Thomas, Chloe B. & Nagaoka, Lisa
Description: This paper discusses research on bike rack occupancy on the University of North Texas (UNT) campus. Abstract: The presence of bike parking facilities has been shown to play a role in improving bike ridership. People are more likely to commute by bike if there are secure and well-located bike racks available. Within the last 5 years, the University of North Texas has made a concerted effort to improve the availability of bike parking for cyclists to encourage cycling as a commute mode. However, the placement of racks around campus has been based on perceived needs rather than documented patterns. The goal of the author's project is to document the occupancy rate of bike racks across campus to identify areas that were underserved. The author also examined how rack installation practices affected the maximum capacity of the racks and occupancy rates. The author found that overall the campus had a sufficient number of racks. However, a few areas on campus were underserviced, while in other areas, the racks were not being utilized. These patterns of use were linked to the types of buildings the racks were associated with, as well as where racks were placed and installed. The findings will allow ...
Contributing Partner: UNT Honors College
Permallink:digital.library.unt.edu/ark:/67531/metadc86188/
Poverty and HIV/AIDS in East Texas
Date: April 19, 2012
Creator: Hatton, Meagan & Oppong, Joseph R.
Description: This paper discusses research on poverty and HIV/AIDS in East Texas. Compared to the rest of the country, Texas has very high rates of HIV/AIDS, but the disease is not uniformly distributed across Texas. East Texas has the highest rates and the virus is spreading more rapidly here than any other region (Texas Department of State Health Services, 2010). Nationally, high HIV/AIDS rates are highest in areas with extreme poverty and low socioeconomic status. In fact, the CDC asserts that HIV infection is analogous to poverty (CDC,2011). This paper seeks to understand the spatial distribution of HIV/AIDS in East Texas and analyze the explanatory factors. Specifically, it will focus on the role of poverty in HIV infection in urban and rural areas of East Texas.
Contributing Partner: UNT Honors College
Permallink:digital.library.unt.edu/ark:/67531/metadc86171/
The Epidemiology of HIV/AIDS in Texas in Ages 25-49 (1999-2010)
Date: April 14, 2011
Creator: Rodriguez, Jonathan & Oppong, Joseph R.
Description: This paper discusses research on the epidemiology of HIV/AIDS in Texas in ages 25-49. Abstract: According to the CDC, 63% of all new HIV diagnoses and 69% of all new AIDS diagnoses in 2009 were among the 25-49 year age group. While previous studies have examined the relationship between HIV/AIDS and a variety of socio-economic variables, no work has been done looking at this specific age group that constitutes a majority of new HIV/AIDS diagnoses in the recent past. Specifically, the author examines the relationships between HIV/AIDS outcomes in Texas and unemployment, education, income, and race/ethnic groups using data aggregated at the county level. Significant correlations where found between HIV/AIDS and unemployment, education, and race/ethnic groups. No significant association was found between HIV/AIDS and income. For future public intervention efforts targeting ages 25-49, a combination of variables, including unemployment, education, and race/ethnicity should be taken into consideration, rather than using only information on income.
Contributing Partner: UNT Honors College
Permallink:digital.library.unt.edu/ark:/67531/metadc84359/
Retreating Glaciers of the Himalayas: A Case Study of Gangotri Glacier Using 1990-2009 Satellite Images
Date: April 1, 2010
Creator: Ding, Jennifer & Dong, Pinliang
Description: This paper discusses research on the retreating glaciers of the Himalayas. Glacier retreat has received increased attention as a sensitive indicator of global warming. Based on medium-resolution Landsat Thematic Mapper (TM) images acquired between 1990 and 2009, high-resolution GeoEye IKONOS images acquired in 2005, and a digital elevation model (DEM) provided by NASA's Shuttle Radar Topographic Mission (SRTM) carried out by the space shuttle Endeavour in 2000, this study focuses on the spatial and temporal variation of the moraine-covered Gangotri Glacier - one of the largest glaciers in the Himalayas. Image calibration was carried out to convert Landsat TM digital numbers (DN) into radiance and reflectance for better comparison between images acquired on different dates. Reflectance spectral curves were derived from both glacial and non-glacial features for more accurate image interpretation. IKONOS images were used to accurate mapping of glacier terrain features. SRTM DEM was used to determine glacial flow directions and aid in image interpretation. Multi-temporal analyses of Landsat TM images acquired in 1990, 2001, and 2009 show that the Gangotri Glacier retreated 345 meters from 1990 to 2009, with a retreating rate of approximately 18 meters per year. The results also show that there are no obvious changes ...
Contributing Partner: UNT Honors College
Permallink:digital.library.unt.edu/ark:/67531/metadc84326/
Pediatric and Maternal HIV in Texas Border Counties and Urban Area
Date: April 14, 2011
Creator: Ho, Jessie & Oppong, Joseph R.
Description: This paper examines the geography of pediatric HIV, HIV in women, and age at diagnosis of women in the Dallas Fort-Worth metroplex, Houston-Galveston Area, and the colonias of Texas-Mexico border counties using the human ecology model. In addition, the study investigates the correlation of female HIV rates and female age at diagnosis with pediatric HIV. County-level morbidity data from the Texas Department of State Health Services (TDSHS) from 1980-2009 are analyzed. Pediatric HIV and HIV in women have a strong positive correlation. The border counties have lower rates of HIV than do the urban areas, and have the youngest age at diagnosis, but have a higher pediatric HIV rate than Dallas Fort-Worth metroplex. Interventions should target preventing HIV in females.
Contributing Partner: UNT Honors College
Permallink:digital.library.unt.edu/ark:/67531/metadc84337/