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The Relationship Between Suicide Ideation And Parasuicide: An Electrophysiological Investigation Using The Loudness Dependence Of Auditory Evoked Potential, Angelika Marsic

Dissertations

The loudness dependence of the auditory evoked potential (LDAEP) has been proposed as a promising valid and a non-invasive indicator of behaviorally relevant central 5-HT functioning. There is limited research on the utility of the LDAEP in discriminating individuals who engage in various degrees of suicidal behavior. The primary purpose of the present study was to examine if the LDAEP, as a measure of central serotonergic functioning, can be useful in distinguishing groups of individuals who: (a) solely experience suicidal ideation (SI group); (b) experience suicidal ideation and have engaged in deliberate self-harm acts (SH group); and (c) individuals with …

Empirical Identification Of Axis I And Axis Ii Symptom Subtypes Of Sex Addiction Using Lateny Profile Analysis, Maria Isabel Nino De Guzman

Dissertations

Sexual addiction is a disorder characterized by lack of control over sexual urges, pathological relationships and lack of intimacy, mood-altering experiences, and adverse consequences that tend to be disregarded by the person affected. Although not classified as a mental disorder in the Diagnostic Statistical Manual-IV-TR (DSM-IV-TR, APA, 2000) this distressful sexual manifestation is increasingly recognized as a clinical and public health problem. Previous studies suggest commonalities with addictive disorders and maladaptive personality traits. The purpose of the current study was to analyze personality configurations of individuals diagnosed as sex addicts and uncover specific subtypes or profiles associated to sexually addictive …

The Update, August/September 2012, University Of Northern Iowa. College Of Humanities, Arts And Sciences.

Update

Inside this issue:

-- Art Making at the House of Hope
-- Department News
-- Annual Scholarship Benefit Concert: 120 Years: The Road to Excellence
-- Alumni Spotlight: Theatre: Sarah Noll Wilson
-- Student Spotlight, Department of Computer Science: Cody Bardell
-- UNI Undergrad EPSCoR Winning Finalist
-- Explorers of Religion
-- Physics in the Classroom: Alumni Spotlight, Science Education
-- School of Music Events
-- Music Professor Earns Award
-- Student Spotlight: Department of Communication Studies: Harrison Postler
-- Save the Date: Tackling Global Challenges in Sustainable Chemistry Using Transition Metal Catalysis
-- Summer Undergraduate Research Symposium

Improved Microalgal Biomass Harvesting Using Optimized Environmental Conditions And Bacterial Bioflocculants, Derek C. Manheim

Master's Theses

ABSTRACT

IMPROVED MICROALGAL BIOMASS HARVESTING USING OPTIMIZED ENVIRONMENTAL CONDITIONS AND BACTERIAL BIOFLOCCULANTS

DEREK CONTE MANHEIM

The cost and energy balance of microalgae biofuel production is sensitive to the algae harvesting method, among many other factors. Bioflocculation and settling of suspended microalgae cultures is a harvesting method with potentially low cost and energy input. However, bioflocculation (the spontaneous flocculation of algal cells without chemical addition) has not been a reliable process with cultures grown in ponds. To provide insights to help improve algae settling, factors affecting the settling of algae were investigated in the laboratory using pure cultures of two common …

Freshman Academy: Transitioning Ninth Grade Students Through The Academic And Social Rigors Of The High School Experience And The Students’, Parents’ And Teachers’ Perceptions, Yulanda West Clinton

Dissertations

Freshman Academy in Mobile County is an ever growing concept. Although the school in this study no longer houses a freshman Academy, the research reveals valuable information that is very useful in assisting schools and school systems in deciding whether or not to implement this type of transitioning program. In addition to the data, the students’, parents’, and teachers’ perceptions of the program are invaluable. This study revealed that students, parents, and teachers have positive perceptions about the academic and social interest areas of freshman students and negative perceptions about the structural interest area. This study also revealed, there is …

Does Psychopathy Predict Future Risky Sexual Behavior?, Jessica Jade Fulton

Dissertations

Risky sexual behavior (RSB), such as having sex with an unknown partner, is associated with a variety of negative consequences including sexually transmitted diseases and unplanned pregnancy. Previous research (e.g., Fulton, Marcus, & Payne, 2010) suggests that psychopathic personality traits as assessed by the Psychopathic Personality Inventory (Lilienfeld & Andrews, 1996) are associated with RSB. Self-Centered Impulsivity (SCI), which is characterized by impulsivity, irresponsibility, and reckless behavior, was positively associated with RSB among men and women. In contrast, Fearless Dominance (FD), which is characterized by fearlessness, manipulativeness, and social dominance, was positively associated with RSB among men but not women. …

Using The Good Behavior Game To Decrease Disruptive Behavior While Increasing Academic Engagement With A Headstart Population, Brandy Marie Hunt

Dissertations

The Good Behavior Game (GBG) has been widely supported as an effective intervention to alter a variety of target behaviors, in various settings, with varying age groups; however, there are areas warranting further investigation. Prior to the present study, no study has examined the GBG’s effectiveness in decreasing disruptive behaviors while increasing appropriate academic behaviors within a preschool population. The present study adds to the literature base by investigating the GBG’s effectiveness in simultaneously decreasing classroom disruptive behaviors while increasing appropriate behaviors. A multiple baseline design across three Headstart classrooms was used to evaluate the effectiveness of the GBG on …

Integrating Care: Improving Overall Health By Integrating Behavioral/Mental Health Care Into Primary Care, Macaran A. Baird

Center for Policy Research

Hippocrates noted that the patient must be attended in light of “his” diet, work, home, and community setting. Since that time, we have struggled with the dilemma of how to put the patient’s presenting problems in the context of the patient’s life circumstances. That goal has proven elusive. So how do we sort out where to put the emphasis with our healing arts?

Evaluation Of Prebiotic Fibers And Pectin On Probiotic Strains And Effect Of Bacteriocin-Like Substance On The Survival Of Listeria Monocytogenes, Dolar Pak

Graduate Theses and Dissertations

Probiotics and prebiotics have been shown to provide beneficial effects on the host health and there are numerous research efforts being conducted on a variety of specific applications. However, most prebiotic carbohydrates are lower molecular weight oligosaccharides; and the health benefits of higher molecular weight pectins have not been fully evaluated. According to reviews, pectins are fermented in the large intestine due to the cooperative activities of colonic bacteria with complementary enzymatic activities. There are very few studies that demonstrate the fermentability of high methoxy pectin and low methoxy pectin by pure cultures of human isolates or probiotic bacteria. Thus, …

Semiconductor Nanocrystals: From Quantum Dots To Quantum Disks, Zheng Li

Graduate Theses and Dissertations

The bottom-up colloidal synthesis opened up the possibility of finely tuning and tailoring the semiconductor nanocrystals. Numerous recipes were developed for the preparation of colloidal semiconductor nanocrystals, especially the traditional quantum dots. However, due to the lack of thorough understanding to those systems, the synthesis chemistry is still on the empirical level. CdS quantum dots synthesis in non-coordinating solvent were taken as a model system to investigate its molecular mechanism and formation process, ODE was identified as the reducing agent for the preparation of CdS nanocrystals, non-injection and low-temperature synthesis methods developed. In this model system, we not only proved …

Investigations Of Protein-Lipid Interactions In Model Membranes: Influence Of Aromatic Anchoring Residues And Buried Polar Residues, Nick Gleason

Graduate Theses and Dissertations

To investigate in detail the interactions between transmembrane proteins and the lipid bilayers in which they are constituted, designed model peptides with selective isotopic labels were synthesized and analyzed by means of solid-state deuterium NMR spectroscopy. Starting from the well-characterized model peptide GWALP23, acetyl-GGALW(LA)6LWLAGA-amide, several Trp to Tyr mutations were compared to evaluate their respective interfacial anchoring abilities. It was found that Tyr, substituted on either or both termini, can effectively anchor the transmembrane alpha-helix, which then adopts a similar transmembrane topology in a range of bilayer thicknesses. Nevertheless, a consistent ~10° shift in tilt direction (helix rotation) is observed …

Maternal Environment And Fescue Cultivar Effects On Growth, Development, And Fertility Of Beef Heifers, Jennifer Denyse Patterson

Graduate Theses and Dissertations

Eighty Brahman-influenced cows (5.6 BCS) were assigned to graze common bermudagrass (CB) or toxic tall fescue (E+) during a 60-d breeding season. Body condition (BC) was assessed at d 0, 30, and 60 of breeding season. Cows were managed to achieve marginal (4.2 BCS) or good (6.3 BCS) BC during last trimester. Heifer birth and weaning (WW; 7 to 8 mo) weights were recorded. The Angus sired heifers were weighed and randomly assigned to E+ or non-toxic (Novel) tall fescue at 9 to 10 mo of age for 190d. Heifer weight, growth data, and antral follicle count (AFC) were collected …

Comparative Response Of Different Broiler Genotypes To Dietary Nutrient Levels, Franco Javier Mussini

Graduate Theses and Dissertations

ABSTRACT

Three studies were conducted to evaluate how the broiler has changed over the years due to intense genetic selection. Four different broiler genotypes, one unselected since the 1950's (HER) representing the old meat-type bird and three current strains (Ross 308, Ross 708, and a test product (TY)) were studied. Differences in growth, morphometry, and response in performance and processing yield to different nutrient levels were studied.

Experiment 1 evaluated growth and morphometric analysis. Birds of each strain were killed weekly from day 7 to day 56, necropsied and cut up parts and organs weighed. Measurement of small intestine segments …

Effects Of Head Position And Head-Supported Mass On Nerve Function Of The Flexor Carpi Radialis Muscle In Healthy Individuals, Bethany Lauren Shivers

Graduate Theses and Dissertations

Long-term exposure to head-supported mass (HSM) has been linked with spinal degeneration including foraminal stenosis and disc deterioration. Anecdotally, HSM has also been linked to neck and arm pain and muscle atrophy, but nerve function has not been tested specifically. The combined effect of various head positions and HSM may be sufficient to compress the nerve root in aviators and Soldiers during job performance, potentially leading to short- and long-term neuromuscular effects. The Hoffmann (H) reflex, a well-established measure of nerve function, has shown to be sensitive to changes in nerve root space which occurs with different head positions. This …

Cell Bioenergetics In Leghorn Male Hepatoma Cells And Immortalized Chicken Liver Cells In Response To 4-Hydroxynonenal Induced Oxidative Stress, Alissa Laura Piekarski

Graduate Theses and Dissertations

Bioenergetic mechanisms responsible for ATP production are essential in carrying out maintenance and cell-specific functions. In this study, hepatocytes (liver cells) were used to test both endogenous and exogenous stress on cellular respiration. The secondary lipid peroxide, 4-hydroxynonenal (HNE), was used because it alters bioenergetics by increasing mitochondrial proton leak that attenuates mitochondrial radical production and, therefore, endogenous oxidative stress. The major objective of this study was to demonstrate effects of HNE-induced oxidative stress on avian hepatocyte bioenergetics. Various chemical which help enable the determination of oxygen (O2) consumption linked to ATP synthesis (oligomycin), maximal O2 consumption (FCCP), and proton …

Of Dice And Men: An Ethnography Of Contemporary Gaming Subculture, Christopher Shane Brace

Graduate Theses and Dissertations

Tabletop roleplaying is a dynamic and flourishing hobby that has become increasingly accessible to a wide variety of participants. The games themselves, as well as the gaming subculture, offer players a number of personal and Social benefits that continue to enrich their lives long after they leave the table. Using Goffman's theories of Dramaturgy and Frame Analysis, this paper seeks to examine the positive impact of gaming in three key areas.

The first is an analysis of the subculture which includes the evolution of the games, the growth and diversification of the roleplaying community, and the current shift in stereotypes …

The Use Of Cortisol And Hba1c As Biomarkers Of Stress In University Administrators, Jacilyn Marie Olson

Graduate Theses and Dissertations

PURPOSE: The purpose of this study was to explore the impact of perceived stress and cardiorespiratory fitness on cortisol and HbA1c, biomarkers of stress, in a group of select university administrators. The impact of gender on these relationships was of special concern. METHODS: University administrators with job titles of Chancellor, Provost, Vice Chancellors and Vice Provosts of the university, and Deans and Associate Deans at the college level were recruited. Twenty-five administrators (15 males and 10 females) agreed to participate and completed a battery of assessments that included completion of the University Administrative Concerns Questionnaire, a finger-stick blood test for …

The Inclusion Of The Nature Of Science And Its Elements In Recent Popular Science Writing For Adults And Young Adults, Feng Jiang

Graduate Theses and Dissertations

This study was conducted to examine the inclusion of nature of science (NOS) in popular science writing to determine whether it could serve supplementary resource for teaching NOS. Four groups of documents published from 2001 to 2010 were included in the analysis: Scientific American, Discover magazine, winners of the Royal Society Winton Prize for Science Books, and books listed in National Science Teacher Association's (NSTA) Outstanding Science Trade Books for Students K-12.

First, computer analysis was performed to categorize passages in the selected documents based on their inclusions of NOS. Then, follow-up human analysis was conducted to assess the frequency, …

The Contradictory Nature Of Natural Mothering: A Discursive Analysis, Britni Lee Ayers

Graduate Theses and Dissertations

In our contemporary sociopolitical rhetoric breastfeeding is something that is natural and something women ought to do because breast is best. The problem with this contemporary discourse of breastfeeding and motherhood is that the dominant medical, political, technological, and patriarchal discourses surrounding breastfeeding have merged to create an highly unattainable definition of what it means to be a "good mother" (Blum 1993). Moreover, upon a close examination, the most pressing political and Social debates of today surrounding the welfare reform, women's employment, reproductive technologies, and abortion, among many others, construct distinctions between "good mothers" and "bad mothers." However, there has …

Gendered Effects On The Child Welfare Agency Decision-Making Process, Brandon Crawford

Graduate Theses and Dissertations

Previous research on child abuse and neglect suggests that there may be gendered relationships between child victims and case outcomes. Specifically, although agency practices may generally regard most male and female children as equally vulnerable, agency attributions regarding the culpability, need, and suitability of parents may be highly differentiated based on gender. Explanations for this pattern may lie in the cultural ideologies and organizational beliefs that distinguish between the perceived rights, responsibilities, and relative importance of mothering and fathering roles. That is, one function of Social service agencies is to uphold Social constructions of parenting and promote our larger cultural …

Subsurface Planetary Investigation Techniques And Their Role For Assessing Subsurface Planetary Composition, Ahmed Elshafie

Graduate Theses and Dissertations

Subsurface planetary investigation techniques are of high interest and importance for the scientific community. Not only they can enhance our knowledge of the history of planetary formation but also can lead to information about its future. Whether the investigation is being conducted remotely using imagers, radars or physically using penetrometers or drills, a pre-existed knowledge of the mechanical and electrical properties of the subsurface regolith should be acquired for better data interpretation and analysis. Therefore, the main objective of this work is to investigate the mechanical and electrical properties of planetary analogs, understand their role for assessing the subsurface structure …

Deepwater, Deep Ties, Deep Trouble: A State-Corporate Environmental Crime Analysis Of The 2010 Gulf Of Mexico Oil Spill, Elizabeth A. Bradshaw

Dissertations

The 2010 Gulf of Mexico oil spill was one of the worst environmental disasters of all time. Using the concept of state-corporate environmental crime, this project applies a case study analysis of secondary data sources including publicly available government reports, corporate documents, academic sources and journalistic accounts to examine the causes of the blowout and the response to the spill. Building on Michalowski and Kramer’s Integrated Theoretical Model of State-Corporate Crime, this study introduces an additional level of analysis- that of the industry- between the organizational and institutional levels.

The causes of the Deepwater Horizon explosion are rooted both in …

Investigating The Biochemical Activity Of Some Flavonoids, Coumarins And Modified Gold-Nanoparticles As Anti-Breast-Cancer Agents, Amr Ezzat Mohamed Mahmoud

Dissertations

Polyphenols compounds are abundant natural products found in many plants as secondary metabolites. These compounds display many interesting pharmacological activities, which have motivated chemists over the years to explore them, and their synthetic derivatives, as potential drugs, especially anticancer drugs. Breast cancer is the most common cancer in women globally, and in the United States of America the estimated worldwide new breast cancer cases and the number of deaths are 1.38 million and 458 thousand, respectively. Currently in the USA there are 2.6 million women who have been treated for breast cancer, and the estimated number of deaths are 39,520 …

Describing The Apprenticeship Of Chemists Through The Language Of Faculty Scientists, Brandy Ann Skjold

Dissertations

Attempts to bring authentic science into the K-16 classroom have led to the use of sociocultural theories of learning, particularly apprenticeship, to frame science education research. Science educators have brought apprenticeship to science classrooms and have brought students to research laboratories in order to gauge its benefits. The assumption is that these learning opportunities are representative of the actual apprenticeship of scientists. However, there have been no attempts in the literature to describe the apprenticeship of scientists using apprenticeship theory. Understanding what science apprenticeship looks like is a critical component of translating this experience into the classroom. This study sought …

Evaluation Of Growing Media For Annual Herb Production In Green Roof Modular Trays, Mary Margaret Fischer

Theses

Extensive urban development has led to the resurgence of green roofs. These vegetated roofs provide significant ecological and economic benefits including mitigation of the urban heat island effect, reduced storm-water runoff, lower energy costs, increased biodiversity, and improved aesthetics, as well as food production and security. Urban agriculture and food security are becoming increasingly important factors of the green roof renaissance. Due to weight load limitations of potential buildings, the ability to produce quality food in shallow media, less than 6.75 cm, could encourage green roof food production. The effectiveness of a commercially available green roof media and a vermicompost …

Introduction (Volume 88)

International Law Studies

No abstract provided.

Phase Speciation Of Carbohydrates And Dioxins In Rivers And Coastal Waters In The Northern Gulf Of Mexico, Kusumica Mitra

Master's Theses

Dissolved carbohydrates (d-CHO), including monosaccharide (MCHO) and polysaccharides (PCHO), and particulate carbohydrates (p-CHO) are major components of natural organic matter and play an important role in biogeochemical cycles of carbon and other trace elements in marine environments. This study aimed to examine the abundance and partitioning of CHO between dissolved and particulate phases and their seasonal variations in the Mississippi Sound/Bight and Lake Pontchartrain. Laboratory mixing experiments were also carried out to examine the behaviour of CHO species along a salinity gradient. The phase partitioning of dioxin among three different phases, i.e., colloidal organic matter, particulate organic matter and sediments, …

Panic Behind The Mask: The Spanish Influenza Epidemic Of 1918 In New Orleans, Sarah Theresa Savage

Master's Theses

As part of the most devastating influenza pandemic in modern history, the Spanish Influenza epidemic in New Orleans left the city emotionally and physically crippled as residents struggled to resume daily life after thousands succumbed to a bloody cough and painful death in October 1918. When New Orleans public health officials reacted to the explosion of Spanish Influenza cases on October 10, 1918, the virus had already traveled throughout the population. Unlike previous influenza outbreaks, the 1918 epidemic killed primarily young healthy adults, the backbones of the working force and families. In an attempt to quarantine the ill from the …

The Effects Of The Good Behavior Game With General Education High School Students, Rachel R. Mitchell

Master's Theses

The purpose of this study was to evaluate the effectiveness of the interdependent group contingency procedure known as the Good Behavior Game (GBG) on decreasing disruptive behaviors in general education high school students. The effectiveness of the GBG has been investigated in many studies as means of managing a variety of behaviors across many developmental levels; however, not all populations have been investigated. Although many studies exist that have utilized the GBG to alter behaviors across ages ranging from pre-school to adulthood, few studies exist in which the GBG has been used with a general education high school population. The …

Difference In The Law Of Weaponry When Applied To Non-International Armed Conflict, William Boothby

International Law Studies

No abstract provided.