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University of Nevada, Las Vegas

Honors College Theses

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Alcohol And Drug Use Amongst College Students In Relation To Sexual Abuse, Christyn Hollingsworth Dec 2014

Alcohol And Drug Use Amongst College Students In Relation To Sexual Abuse, Christyn Hollingsworth

Honors College Theses

The impact of child sexual abuse (CSA) and traumatic sexual experiences has been the subject of multiple studies in which harm was found. Among these harms are emotional distress, psychological issues, and substance abuse. This research analyzed and compared the responses to questions pertaining to substance use and attitudes regarding sexual interactions between college aged students with and without a history of sexual abuse. The participant’s answers were run through an ANOVA to determine statistical variance. Based on prior research, it was expected that victims consume alcohol and use drugs more frequently than non-victims in significant amounts. The findings in …


Modeling Hedonic Processing And Anhedonia In Depression, Kevin Mercado Nov 2014

Modeling Hedonic Processing And Anhedonia In Depression, Kevin Mercado

Honors College Theses

Depression is characterized by low positive emotion and a lack of pleasurable experiences, or anhedonia. Past studies have emphasized controlling negative affect, but there is an emerging trend in the depression literature to focus on positive emotion. The current study employed several psychophysiological tools, postauricular reflex, startle blink reflex, and event-related potential (ERP) components such as P3 and the late positive potential (LPP), to assess the dissociable components in positive emotion (consummatory and anticipatory processes). In addition, several different hypotheses of emotional dysfunction were evaluated to accurately model deficits in positive emotionality. A majority of the psychophysiological tools used supported …


Biomechanical Analysis Of Gait Kinetics Resulting From Use Of A Vacuum Socket On A Transtibial Prosthesis, Maria De Lourdes Ramos Gonzalez May 2014

Biomechanical Analysis Of Gait Kinetics Resulting From Use Of A Vacuum Socket On A Transtibial Prosthesis, Maria De Lourdes Ramos Gonzalez

Honors College Theses

The technology and design of lower limb prosthetics have evolved greatly since their introduction. The current study proposed to compare the effects of a conventional pin socket attachment and a vacuum socket attachment for a transtibial amputee. Whereas traditional measurements of gait utilize force plates and camera systems, this study made use of a small tri-axial load cell located at the base of the socket to measure the forces and moments exerted during a regular gait cycle. The hypothesis tested stated that a vacuum pump socket attachment, when compared to a non-vacuum (pin) socket, will have a significant effect on …


Killing And Letting Die: The Irrelevant Distinction, Sarah Beth Shaw May 2014

Killing And Letting Die: The Irrelevant Distinction, Sarah Beth Shaw

Honors College Theses

The object of this essay is to explain why the distinctions made in euthanasia between killing vs. letting die and willingness to kill vs. unwillingness to kill are not relevant to real life euthanasia cases. The specific purpose of the research is to isolate the relevant factor for debate when discussing the morality of euthanasia. It begins with a brief examination of some vocabulary that is commonly used when discussing euthanasia. Following this is a quick overview of what the word euthanasia meant in the ancient Greco-Roman world compared to what it means in the modern vernacular. I use an …


Early Life Stress, Drug Abuse, Exercise Effects On Bdnf And Sex-Influenced Excercise Differences, Karissa Dold May 2013

Early Life Stress, Drug Abuse, Exercise Effects On Bdnf And Sex-Influenced Excercise Differences, Karissa Dold

Honors College Theses

In 2011, the U.S. reported 3 million child maltreatment cases, an uncomfortably high but recurring figure each year. Research shows exposure to early life stress (ELS) increases an individual’s susceptibility to substance abuse, specifically of nicotine, alcohol, and cocaine. Increased susceptibility may result from dysregulation of the HPA axis sustaining activation into adulthood after ELS. Hyperactivation of the HPA axis significantly reduces hippocampal BDNF, a neurotrophin involved in neuronal growth and plasticity. Reduced hippocampal BDNF may be a factor in substance abuse vulnerability. Additionally, research shows exercise protects hippocampal BDNF from stress induced down-regulation. To explore these relationships, this study …


The Design And Testing Of A Solar Autoclave With Broad Spectrum Sterilization Capabilities, Sarah S. Trabia Nov 2012

The Design And Testing Of A Solar Autoclave With Broad Spectrum Sterilization Capabilities, Sarah S. Trabia

Honors College Theses

Energy is difficult to come by in developing countries and this interferes with the ability of doctors to provide good healthcare to their patients. Without decent sterilization, patients can become infected and diseases can spread throughout hospitals. This study involves designing a solar autoclave for developing countries that is as efficient as electrical autoclaves. The design is intended to not require any electrical input and to be affordable to those who cannot afford advanced medical equipment. Once the solar autoclave is designed, it will be tested to determine if it can sterilize equipment against a variety of different bacteria, including …