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2015

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Maternal Depression: The Impact Of Perceived Social Support And Behavioral Health Rehabilitation Provider 50 Services, Tammy Lynn Gregorowicz Jan 2015

Maternal Depression: The Impact Of Perceived Social Support And Behavioral Health Rehabilitation Provider 50 Services, Tammy Lynn Gregorowicz

Walden Dissertations and Doctoral Studies

The purpose of this study was to identify if the rate of behavioral health rehabilitation services (BHRS) impacts depressive symptoms of mothers with children receiving these services and if the perception of social support moderates the severity of depression. The stress-buffering hypothesis and Bowen's family systems theory were used for the theoretical framework. A quantitative, cross-sectional survey design was used to collect data from mothers of children receiving BHRS Provider 50 services in northeast Pennsylvania. The Beck Depression Inventory, Second Edition and Multidimensional Scale of Perceived Social Support were used to assess depression and perceived social support. A self-made demographic …

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Predicting Success In First-Year Associate Degree Nursing Students, Laura J. Hope Jan 2015

Predicting Success In First-Year Associate Degree Nursing Students, Laura J. Hope

Walden Dissertations and Doctoral Studies

An associate degree of nursing program in the southeastern region of the United States has had significant increases in student attrition over the past few years. Admission requirements did not include an entrance exam, such as the Test of Essential Academic Skills (TEAS), which may be useful in decreasing the deficiencies associated with poor student progression. Guided by the Knowles' theory of adult learning and Bandura's social learning theory, the purpose of this correlation study was to explore the relationship between the TEAS scores and the cumulative grade point average (GPA) of first-year students to determine if success at the …

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School District Stress Prevention Practices In A Southern U.S. State, Stephen Field Keohane Jan 2015

School District Stress Prevention Practices In A Southern U.S. State, Stephen Field Keohane

Walden Dissertations and Doctoral Studies

The growing recognition that stress is a risk factor for youth health problems has spawned research on school-based stress prevention programs and services. While such programs and services are now available for adoption by schools, there is an absence of data on their use in U.S. schools systems. In the current study, Everett Rogers's diffusion of innovations model provided the theoretical framework for the investigation of school district stress prevention practices in one southern U.S. state. The sample for this quantitative descriptive study consisted of 135 out of 136 active public districts, and 72% of school systems completed and returned …

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Teachers' Perceptions Of The Influence Of Teacher Collaboration On Teacher Morale, Alison Goldstein Jan 2015

Teachers' Perceptions Of The Influence Of Teacher Collaboration On Teacher Morale, Alison Goldstein

Walden Dissertations and Doctoral Studies

Currently in secondary education, there is an impetus to have educators collaborate; however, teaching has often been perceived as a solitary occupation, and often logistics prevent collaboration from occurring. Furthermore, the stress of the job, teaching of different disciplines, and low morale can often prevent teachers from collaboration. The research problem addressed in this study reflects the challenges that teachers have with engaging in collaboration. The purpose of the qualitative case study was to understand how teachers are affected by collaboration, the barriers that prevent collaboration, and the possible benefits of collaboration. This case study is grounded in the constructivist …

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Association Between Psychological Trauma From Assault In Childhood And Metabolic Syndrome, W Sumner Davis Jan 2015

Association Between Psychological Trauma From Assault In Childhood And Metabolic Syndrome, W Sumner Davis

Walden Dissertations and Doctoral Studies

Metabolic syndrome and its component conditions of hypertension, obesity, and insulin resistance are on the increase in United States. Metabolic syndrome substantially increases the risk of cardiovascular disease and type 2 diabetes (T2D). To date, no published study has examined the relationship between psychological traumas from physical and/or sexual assault in childhood and metabolic syndrome or its components. This study, using the psychoneuroimmunology (PNI) model, investigated associations between psychological trauma (physical/sexual abuse) in childhood and metabolic syndrome in adulthood using data from the Midlife in the United States II (MIDUS-II) study. This research was undertaken to investigate whether a history …

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Weight Management Of Women Of Childbearing Age, Marcia Hagen Jan 2015

Weight Management Of Women Of Childbearing Age, Marcia Hagen

Walden Dissertations and Doctoral Studies

Black River Memorial Hospital identified obesity as a priority health concern in its rural service area; this concern was in line with the county's needs assessment. It was identified that women of childbearing age affect the lifestyle and health choices of their families and that they are at higher risk for the additional health risks associated with obesity affecting pregnancy and birth. Despite the identification of these risk factors, the factors that affect healthy weight management have not been well understood. Using the life course theory, a qualitative inquiry in the form of a structured interview was developed with local …

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The Role Of Childhood Trauma And Methamphetamine-Induced Violence In Women, Ashley Kennedy Ibbotson Jan 2015

The Role Of Childhood Trauma And Methamphetamine-Induced Violence In Women, Ashley Kennedy Ibbotson

Walden Dissertations and Doctoral Studies

Victims of childhood trauma are vulnerable to substance abuse due to their inability to develop coping skills following trauma, which can lead to criminal and violent behavior. Guided by the ecodevelopmental theory, this phenomenological study attempted to relate the perceived experiences of violent behaviors as a result of methamphetamine use in women to the types of childhood trauma the women experienced. Fourteen women were recruited using purposive sampling in collaboration with the South Brunswick Counseling Center, based on inclusion criteria that included being over the age of 18; having abstained from methamphetamine use for at least a year; having experienced …

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Exploring Online Community College Course Completion And A Sense Of School Community, Kathleen Stone Jan 2015

Exploring Online Community College Course Completion And A Sense Of School Community, Kathleen Stone

Walden Dissertations and Doctoral Studies

Researchers have found low online course completion rates to be a complex problem in higher education. Meanwhile, theory on adult learners' online persistence highlights the importance of a sense of school community. At the small, rural focus community college (FCC) for this study, general education online course completion rates are lower than the national average. FCC has not addressed the low online course completion rates. Using Rovais' composite persistence model as the conceptual framework, this instrumental case study examined how students' experiences and perceptions of a sense of school community contribute to their ability to complete online general education courses. …

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The Association Between Asthma Management And Routine Posture Exercise, Anne-Marie Lydie Coleman Jan 2015

The Association Between Asthma Management And Routine Posture Exercise, Anne-Marie Lydie Coleman

Walden Dissertations and Doctoral Studies

Asthma cannot be cured, but it can be managed. Asthma management is a public health issue that is complex. Medication, asthma triggers, age, and the environment are all factors that impact asthma management. There is a gap in research in terms of what lifestyle characteristics need to be in place in order for adults to manage asthma. Shaw found that posture care is a lifestyle variable that should be explored as it relates to asthma management in older adults. The Life University Clinic (Marietta, GA) sees asthmatic patients daily and teaches them about a posture care routine through a program …

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Stress Among Undergraduate Distance Learners: A Cross-Sectional Study, Susan Hoang Jan 2015

Stress Among Undergraduate Distance Learners: A Cross-Sectional Study, Susan Hoang

Walden Dissertations and Doctoral Studies

There are many changes undergraduate students face when they transition to the college environment, including vacations and an increase in academic workload. Past research has found that both gender and year of study impact level and sources of stress in undergraduate students who attend traditional brick and mortar institutions. However, the relationship between gender, year of study, and stress levels in undergraduate distance learners has not been well studied. Based on the cognitive theory of emotions, this quantitative study examined what undergraduate distance learners perceive as stressful, whether or not gender and year of study impacted these stressors and whether …

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Teachers' Perceptions Of The Impact Of Standardized Testing And Remediation On Students With Disabilities, Janie M. Mora Jan 2015

Teachers' Perceptions Of The Impact Of Standardized Testing And Remediation On Students With Disabilities, Janie M. Mora

Walden Dissertations and Doctoral Studies

At ABCD High School, students with disabilities (SWDs) pass state-mandated English High School Assessments (HSA) at a lower rate than do their nondisabled peers, even with remediation. The purpose of this study was to investigate teachers' perceptions of appropriate remediation for preparing SWDs for the English HSA. The theoretical foundation for the study was based on social constructivism with an emphasis on individual experiences. The 3 key research questions investigated how teachers perceive their role in the delivery of remediation, how they describe the remediation program, and what factors they say influence their ability to remediate SWDs effectively. Data were …

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Autonomous Weapons And The Problem Of State Accountability, Daniel N. Hammond Jan 2015

Autonomous Weapons And The Problem Of State Accountability, Daniel N. Hammond

Chicago Journal of International Law

Currently in development and expected to become functional in the near future, fully autonomous weapons will have the capacity to operate entirety on their own, selecting targets and completing missions without human involvement. The prospective development of these weapons has raised concerns among some scholars who fear that the weapons would be unable to meet international legal standards. One criticism consistently raised is that in the event one of these weapons commits a war crime or human rights violation, it is not clear who should be held accountable. In this context, critics have focused primarily on whether military officers, designers, …

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A Case Study Of Respect Among Young Urban African American Men, Morgan Zenobia London Jan 2015

A Case Study Of Respect Among Young Urban African American Men, Morgan Zenobia London

Walden Dissertations and Doctoral Studies

Many young adult African American men living in urban areas adopt a style of self-presentation known as the gangsta image in an attempt to earn and maintain what they may perceive to be respect, self-esteem, and social status. While these young men succeed in earning the respect of their peers, they also may jeopardize their chances of succeeding in mainstream society by engaging in an alienating lifestyle related to their alternative form of status. The purpose of this case study was to explore the concepts of respect and self-esteem as defined by a culture-sharing group of young African American men …

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Recovery Potential Of The Mussel Communities In The Lower Section Of Big Walnut Creek, Jared B. Ellenbogen Jan 2015

Recovery Potential Of The Mussel Communities In The Lower Section Of Big Walnut Creek, Jared B. Ellenbogen

Undergraduate Honors Thesis Projects

Since the enactment of the 1977 Clean Water Act, biologists have created numerous multimetric assessment tools to evaluate the biological integrity of water resources, using biological criteria. The integrity of Big Walnut Creek, Ohio, has been in flux since the 1955 construction of Hoover Dam, and while current water quality is high, mussel communities in the creek have yet to recover to historical levels. This study sought to determine the cause of the decline in the mussels in the lower section of the creek below the dam. Historical creek data, including a fish-based index of biotic integrity (f-IBI), invertebrate community …

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Toxicity Of Leaf Extract Of Acer Spp. On Equine Erythrocytes, Bailey Katherine Dye Jan 2015

Toxicity Of Leaf Extract Of Acer Spp. On Equine Erythrocytes, Bailey Katherine Dye

Undergraduate Honors Thesis Projects

Red maple toxicosis is a phenomenon that occurs in equines after the consumption of dried or wilted red maple (Acer rubrum L.) leaves. Within the erythrocytes, it causes hemolysis, methemoglobinemia, and Heinz body development. The toxic agent of red maple leaves has not yet been identified; however, the development of hemolytic anemia and methemoglobinemia in equines after ingestion of the leaves, suggests that the toxin is acting as a strong oxidant. Some studies have noted that not only are wilted red maples leaves toxic to equines, but that wilted leaves of other maple species may also be toxic. Therefore, …

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Bayesian Nonparametric Cross-Study Validation Of Prediction Methods, Lorenzo Trippa, Levi Waldron, Curtis Huttenhower, Giovanni Parmigiani Jan 2015

Bayesian Nonparametric Cross-Study Validation Of Prediction Methods, Lorenzo Trippa, Levi Waldron, Curtis Huttenhower, Giovanni Parmigiani

Publications and Research

We consider comparisons of statistical learning algorithms using multiple data sets, via leave-one-in cross-study validation: each of the algorithms is trained on one data set; the resulting model is then validated on each remaining data set. This poses two statistical challenges that need to be addressed simultaneously. The first is the assessment of study heterogeneity, with the aim of identifying a subset of studies within which algorithm comparisons can be reliably carried out. The second is the comparison of algorithms using the ensemble of data sets. We address both problems by integrating clustering and model comparison. We formulate a Bayesian …

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Women And Thyroid Disease: Treatment Experiences And The Doctor-Patient Relationship, Laura J. Mccormick Jan 2015

Women And Thyroid Disease: Treatment Experiences And The Doctor-Patient Relationship, Laura J. Mccormick

Walden Dissertations and Doctoral Studies

Thyroid disease, a chronic illness, affects nearly 200 million people worldwide and is more common among women than in men. Numerous factors make diagnosing and treating thyroid disease in women challenging. The standard blood test for diagnosing thyroid disease and determining treatment effectiveness is inconsistent in its accuracy. Many women with thyroid disease are misdiagnosed or struggle with symptoms even once receiving treatment. Although thyroid disease is highly prevalent among women and the doctor-patient relationship is known to influence treatment outcomes, there is a gap in the literature regarding the treatment experiences of women with thyroid disease and the doctor-patient …

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Patchy Progress On Obesity Prevention: Emerging Exemplars, Entrenched Barriers, And New Thinking, Christina A. Roberto, Boyd Swinburn, Corinna Hawkes, Terry T-K Huang, Sergio Costa, Marice Ashe, Lindsey Zwicker, John H. Cawley, Kelly D. Brownell Jan 2015

Patchy Progress On Obesity Prevention: Emerging Exemplars, Entrenched Barriers, And New Thinking, Christina A. Roberto, Boyd Swinburn, Corinna Hawkes, Terry T-K Huang, Sergio Costa, Marice Ashe, Lindsey Zwicker, John H. Cawley, Kelly D. Brownell

Publications and Research

Although there have been positive pockets of change, no country has yet turned around its obesity epidemic. Preventing an increase in obesity prevalence will require urgent actions from government as well as a broader spectrum of stakeholders than previously emphasized. In this paper, we review a number of regulatory and non-regulatory actions taken around the world to address obesity and discuss some of the reasons for the patchy progress. In addition, we preview the papers in this Lancet series, which each identify priority actions on key obesity issues and challenge some of the entrenched dichotomies that present obesity and its …

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Rabies: The Interplay Of One Virus With Medicine Throughout History, Anita Maria Roberti Jan 2015

Rabies: The Interplay Of One Virus With Medicine Throughout History, Anita Maria Roberti

Theses & ETDs

Rabies is a deadly neuropathic virus, which is transmitted through the saliva of an infected animal. It is one of the first diseases on record in ancient medical references. It was so recognizable and lethal that it had a reputation of mythic proportions throughout most of human history. In 1885, Louis Pasteur tested the first rabies vaccine on a human. The vaccine worked, and ushered in a new era of medical research. Over the years, the treatments to prevent rabies have been improved, increasing their effectiveness. Recent medical research is even attempting to make use of the virus’s unique properties …

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Knowing Me, Knowing You: The Dilemma Of Diversity Courses In Higher Education, Marian Derlet Jan 2015

Knowing Me, Knowing You: The Dilemma Of Diversity Courses In Higher Education, Marian Derlet

Doctor of Education (EdD)

American institutions of higher education are increasingly addressing the issue of diversity. Many colleges list diversity as one of their institutional values, while others not only name diversity as a value, but also require diversity courses. This paper examines the difficulty posed by these objectives due to a lack of agreement and/or understanding of the term diversity. Traditional notions of diversity include differences of race, religion, and ethnicity. However in the 21st century, the term diversity now includes such categories as age, socio-economic status, and disability. This paper argues that as college students seek to define diversity for themselves, they …

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Peer Support Education For Uncontrolled Hypertension Among African Americans Adults, Melvina Juliana Semper Jan 2015

Peer Support Education For Uncontrolled Hypertension Among African Americans Adults, Melvina Juliana Semper

Walden Dissertations and Doctoral Studies

Hypertension is a major chronic health problem that can lead to heart attack, stroke, and kidney failure. African Americans disproportionately suffer from the morbidity and mortality of hypertension-related illnesses. The purpose of this comparative project was to determine the impact of peer support educational workshops as an avenue for lifestyle modification, using changes in blood pressure (BP) before and after participation. The target population consisted of 64 African Americans with hypertension in Brooklyn NY, aged 20 to 65 years old. BP measurements were taken within 1 month before and after participating in a weekly peer support educational workshop facilitated by …

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Effects Of Substrate Material On Marine Fouling Community Composition And Ascidian Larval Settlement, Anna Lindsey Chase Jan 2015

Effects Of Substrate Material On Marine Fouling Community Composition And Ascidian Larval Settlement, Anna Lindsey Chase

Master's Theses and Capstones

Driven by the rising global population and shoreline development, man-made marine structures are becoming ubiquitous in coastal areas. These alterations may have enormous ecological consequences, as anthropogenic structures provide novel habitat for marine organisms and often host communities that differ from those on natural substrates. These community differences are frequently driven by non-native species, which can be more prevalent on man-made marine structures than on adjacent natural surfaces. Although multiple factors, including light intensity, surface orientation, predation exposure, and habitat type, are known to contribute to these patterns, relatively few studies have directly examined the influence of substrate material on …

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The Effects Of Temperature On Cyp19a1a, Foxl2, Dmrt1 And Amh Expression During Sex Differentiation In Summer Flounder (Paralichthys Dentatus), Catherine Curro Caruso Jan 2015

The Effects Of Temperature On Cyp19a1a, Foxl2, Dmrt1 And Amh Expression During Sex Differentiation In Summer Flounder (Paralichthys Dentatus), Catherine Curro Caruso

Master's Theses and Capstones

Female summer flounder grow considerably faster and larger than males, and a tremendous increase in performance can therefore be realized through production of monosex female populations. Rearing temperature has been shown to affect sex differentiation in other teleost species by influencing expression of genes encoding transcription factors, hormones or enzymes involved in endocrine function such as cyp19a1a, foxl2, dmrt1 and amh. These genes have been linked to female (cyp19a1a, foxl2) or male (dmrt1, amh) development, and exhibit sexually dimorphic expression in some species. In the present study, summer flounder (37 days post hatch; DPH) were raised at 13°C, 16°C or …

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The Use Of Tricaine Methanesulfonate, Clove Oil, Metomidate, And 2-Phenoxyethanol For Anesthesia Induction In Alewives (Alosa Pseudoharengus), Mark Thomas Watson Jan 2015

The Use Of Tricaine Methanesulfonate, Clove Oil, Metomidate, And 2-Phenoxyethanol For Anesthesia Induction In Alewives (Alosa Pseudoharengus), Mark Thomas Watson

Master's Theses and Capstones

Anesthetics are widely used in routine aquaculture operations to immobilize animals for tagging, spawning, handling, and vaccination. A number of anesthetics are currently available for finfish, but their efficacy and optimal dosage is highly species-specific. The efficacy of the anesthetic agents (tricaine methanesulfonate (MS-222), clove oil, metomidate, and 2-phenoxyethanol (2-PE)) was studied in adult, juvenile (133.3 ± 1.5 mm, 27.5 ± 8.9 g), and larval Alewives (Alosa pseudoharengus Wilson). In an initial trial, wild-caught adults were anesthetized with doses of 87.5-112.5 mg/L MS-222, 25-40 mg/L clove oil 0.5-5.0 mg/L metomidate and 0.125-0.550 mg/L 2-PE. Optimal doses for anesthesia were similar …

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Maturity And Growth Of The Acadian Redfish (Sebastes Fasciatus) In The Gulf Of Maine, Kristin Lynn Duclos Jan 2015

Maturity And Growth Of The Acadian Redfish (Sebastes Fasciatus) In The Gulf Of Maine, Kristin Lynn Duclos

Master's Theses and Capstones

Acadian redfish (Sebastes fasciatus) are a long-lived, slow growing, live-bearing fish species found in the Gulf of Maine region. Historically, this species once supported a substantial commercial fishery, however, overexploitation coupled with low reproductive output decimated natural populations. Strict regulatory measures were implemented and the population eventually recovered, however, knowledge of the current population status is essential to ensure that the population continues to be harvested at a sustainable rate. This study utilized otolith age readings and histological analysis of gonad tissue to determine current growth and maturity patterns in the Gulf of Maine S. fasciatus population. Growth functions obtained …

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Invasive Plant (Alliaria Petiolata; Garlic Mustard) Homogenizes Fungal Communtiy Composition And Increases Fungal Richness, Mark Anthony Jan 2015

Invasive Plant (Alliaria Petiolata; Garlic Mustard) Homogenizes Fungal Communtiy Composition And Increases Fungal Richness, Mark Anthony

Master's Theses and Capstones

Non-native invasive plants can disrupt native plant communities and soil function (e.g., C and N cycling), but few studies have examined how soil microbial community structure differs in association with invasion. This work focused on Alliaria petiolata (garlic mustard), a non-mycorrhizal Brassicaceae that can displace native plants and reduce aboveground diversity. Garlic mustard produces toxic phytochemicals that can suppress mycorrhizal fungi, but we currently do not know if garlic mustard invasion affects the general fungal community, including specific mycorrhizal fungi, saprotrophic fungi, and plant pathogens and parasites. The objective of this work was to compare uninvaded and invaded soils from …

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Molecular Dynamics Studies Of Nucleic Acids And Ribonucleoprotein Complexes, Tyler James Mulligan Jan 2015

Molecular Dynamics Studies Of Nucleic Acids And Ribonucleoprotein Complexes, Tyler James Mulligan

Master's Theses and Capstones

Molecular simulations of protein-nucleic acid complexes, as well as the HIV-1 Trans Activation Response Element (TAR) RNA molecule, were conducted. First, three different molecular dynamics techniques were studied on the molecule HIV-1 TAR RNA. The three techniques studied were classical molecular dynamics, steered molecular dynamics (SMD), and metadynamics. The classic molecular dynamics simulations were used to equilibrate the HIV-1 TAR RNA system, as well as every other system studied in this thesis. The SMD technique was used in order to observe the breaking force of the nucleotide interactions within TAR. This breaking force averaged to about 100pN. The metadynamics technique …

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Physiological Changes In White-Rot Fungi In Response To Simulated Nitrogen Deposition Are Not Readily Reversed Through Experimental Evolution, Elizabeth Amy Landis Jan 2015

Physiological Changes In White-Rot Fungi In Response To Simulated Nitrogen Deposition Are Not Readily Reversed Through Experimental Evolution, Elizabeth Amy Landis

Master's Theses and Capstones

Increases in nitrogen (N) deposition have been shown to slow decomposition of organic material including lignin, particularly in forests with high lignin content. Since basidiomycete fungi are the primary decomposers of lignin, their response to increases in available N are of interest. The Chronic Nitrogen Amendment Study at the Harvard Forest Long-Term Ecological Research (CNAS HF-LTER) site is an experimental N gradient in Petersham, MA. Since 1988, three megaplots have received varying levels of NH4NO3: ambient-only deposition (control), 50 kg N ha-1 yr-1 (N50), or 150 kg N ha-1 yr-1 (N150). In order to examine how species of lignin-degrading basidiomycetes …

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Law, Justice, And All That Jazz: An Analysis Of Law's Reach Into Musical Theater, Amy Oldenquist Jan 2015

Law, Justice, And All That Jazz: An Analysis Of Law's Reach Into Musical Theater, Amy Oldenquist

Master's Theses and Capstones

Narratives or stories are present in many facets of life. Narratives especially are seen in the media, fiction and nonfiction alike. These stories, seen in media, fiction, and nonfiction alike, have an immense impact on their audience. This influence displays the importance of continued research into media’s narratives, especially legal narratives. Much of past research looked at the social construction of these stories and its framing. Framing refers to how a subject is discussed in the media. While there is much research on media, framing, and legal narratives, very few researchers have examined live entertainment, including musical theater. My study …

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Estimating Surficial Seafloor Sediment Properties Using An Empirical Orthogonal Decomposition On Acoustic Backscatter Waveform Properties, Joshua Lincoln Humberston Jan 2015

Estimating Surficial Seafloor Sediment Properties Using An Empirical Orthogonal Decomposition On Acoustic Backscatter Waveform Properties, Joshua Lincoln Humberston

Master's Theses and Capstones

Seafloor classification and environmental assessment in shallow marine waters are crucial to habitat mapping, coastal management policies and maintaining navigational waterways. There are existing methods for remotely estimating some bottom properties, but the large variety of desired measured sediment properties frequently leads to insufficient quantifiable data to support marine policy decisions. This problem is exacerbated by the highly variable bottom composition of typical coastal and estuarine environments. In this work, field observations from an Odom Echotrac vertical-incidence echosounder with a 200 khz transducer were used to estimate seafloor sediment characteristics in regions with variable bottom types. Observations were obtained in …

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