Digital Commons Network^™

Improving Multi-Threaded Qos In Clouds, Weiwei Jia

Dissertations

Multi-threading and resource sharing are pervasive and critical in clouds and data-centers. In order to ease management, save energy and improve resource utilization, multi-threaded applications from different tenants are often encapsulated in virtual machines (VMs) and consolidated on to the same servers. Unfortunately, despite much effort, it is still extremely challenging to maintain high quality of service (QoS) for multi-threaded applications of different tenants in clouds, and these applications often suffer severe performance degradation, poor scalability, unfair resource allocation, and so on.

The dissertation identifies the causes of the QoS problems and improves the QoS of multi-threaded execution with three …

Mechanisms Of Oscillations And Polyglot Entrainment In Neuronal And Circadian Models, Emel Khan

Dissertations

Entrainment is a type of synchronization in which the period of an endogenous oscillator matches the period of an external forcing signal and a stable phase relationship is maintained between them. Entrainment patterns are described in terms of the number of input oscillations (N) that are phase-locked to a number of output oscillations (M), referred to as N:M patterns. Arnold tongue diagrams are used to depict the regions of N:M entrainment patterns in the input period-amplitude parameter space. Although the entrainment of self-sustained oscillators by periodic forcing are well investigated is a well-studied problem, entrainment of damped oscillators has been …

Controlled Reduction Of Graphene Oxide And Graphene Oxide-Carbon Nanotube Hybrids And Their Applications, Samar Azizighannad

Dissertations

Graphene and graphene derivatives are widely used in diverse research and industrial applications. Graphene production on a large scale is carried out by exfoliating graphite oxide and producing graphene oxide (GO), which comprises of graphene sheets with different oxygen-containing functional groups such as hydroxyl, carboxyl, and carbonyl. GO is reduced to reduced graphene oxide (rGO), which has properties that are closer to graphene. Properties of GO and rGO depend upon the oxygen content, and the effect of reducing oxygen content on the aqueous behavior of rGOs is not well understood.

In an effort to understand how properties of rGO change …

Using Fnirs As An Objective Measure Of Susceptibility To Informational Masking, Min Zhang

Dissertations

Resolving complicated auditory scenes is crucial for daily communication where background sound is often present. However, most hearing aid (HA) and cochlear implant (CI) users have difficulties understanding speech when competing sound sources are present, resulting in reduced job opportunities and increased risk for social isolation. Perceptual interference from background sound is called auditory masking. At least two distinct masking phenomena exist, called energetic and informational masking (EM and IM).

In the first masking phenomenon, EM, target and masker energies coincide at the same time and frequency. Computational and physiological models of cochlear auditory processing can reliably predict listeners' performances …

Modeling And Analysis Of Intracellular Signaling Networks And Cellular Decisions, Mustafa Ozen

Dissertations

Developing molecular network analysis methods is important due to their applications on complex biological systems such as target discovery, development of drugs, discovering drug effects, and finding treatments for many complex diseases, e.g., cancer, autoimmune, and mental disorders. An example of analysis techniques is the fault diagnosis analysis, in which the purpose is to quantify how much vulnerable the entire network is to dysfunction of one or multiple molecules. Such analysis can be done after proper network models are implemented, trained, and tested against the experimental data. In this dissertation, a Boolean modeling framework is implemented and methods to train …

An Investigation Of Success Factors In A High School Algebra I Program, Sherri Kulpa

Dissertations

The purpose of this study was to investigate a high school Algebra I program through an examination of potential relationships among teachers’ beliefs about teaching and learning mathematics, teachers’ instructional styles, students’ academic self-concept in mathematics, and students’ mathematics achievement in an Algebra I course. While a significant amount of research has focused on individual components of the study (e.g., instructional practices, academic self-concept), little research has been done to identify potential relationships between factors. Additionally, much of the available research focused on the elementary level leaving a gap in understanding how various factors were related to the success of …

Political Styles And Strategies Used By Midsized Elementary School District Superintendents To Work With School Board Members, Christine Sinatra

Dissertations

Purpose: The purpose of this sequential explanatory mixed methods study was to identify the political styles of superintendents and school board members as perceived by superintendents. In addition, it was the purpose to identify and explain the political strategies superintendents use to work with the different political styles of school board members.

Methodology: This study used a mixed methods sequential explanatory research design to collect quantitative data through an electronic survey to identify and describe the political styles of each superintendent and their board members. An in-depth qualitative interview process further explored each superintendents’ lived experience with using different political …

How Does The Market View Share Repurchases: Five Possible Book Values In The Fama-French 3 Factor Model, Jaime Peters

Dissertations

Share repurchase activity has grown significantly over the past twenty years and has emerged as the most popular technique for returning cash to shareholders. Current U.S. generally accepted accounting principles treat share repurchases as a return of capital to shareholders, recording the repurchased shares at market prices and offsetting them against contributed capital accounts. This treatment reduces the recorded book value of the equity of companies. Of course, companies can reissue these shares to fulfill stock option contracts, as consideration in acquisitions, and/or in secondary offerings. These economically relevant uses of repurchased shares suggest that the market may treat share …

Emergency Department Visits And Hospital Admissions For Adult Cancer Patients Post Outpatient Chemotherapy: Does The Oncology Nurse Navigator Make A Difference?, Sunny L. Stirling

Dissertations

Background: Cancer is the second leading cause of death in the United States and worldwide. Oncology related hospital visits account for over $88 billion annually; 35% of this cost is attributable to inpatient hospital stays even though most cancer treatments are given outpatient. The Centers for Medicare and Medicaid Services introduced the Chemotherapy Measure which tracks Emergency Department visits and hospitalization within 30 days of any outpatient chemotherapy treatment. The Oncology Nurse Navigator (ONN) has offered some benefit in cancer care, but its role in ED visits and hospital admissions is unknown for adult patients with cancer post outpatient …

Food Insecure Copd Patients And Healthcare Utilization: A Retrospective Study, Kristine Mendoza

Dissertations

Abstract

Purposes/Aims: Despite advances in the recognition and treatment of high-cost users of health care, the incidence of healthcare utilization remains high. Rates of hospital admissions and emergency room visits among chronic disease like COPD have become a targeted group for health management. COPD patients have multiple and complex health and social needs, but the impact of their unmet food needs is not well understood and warrants further investigation. The purpose of this study is to explore the relationships between COPD food insecure patients and healthcare utilization in San Diego County.

Background/Rationale: Government programs targeting patients with high healthcare costs …

The Associations Of Chronic Stress, Social Support, Health Behaviors And Metabolic Syndrome Among Hispanic Women, Edna Esquer

Dissertations

The Associations of Chronic Stress, Social Support, Health Behaviors and Metabolic Syndrome Among Hispanic Women

Background: Metabolic syndrome (MetS) prevalence is 25% among Mexican American women 30 – 49 years of age, compared to 22% among non-Hispanic Whites in the United States. Little is known about the additional contributions of chronic stress, social support and health behaviors to the development of MetS among this population.

Purpose: Describe the associations between chronic stress, social support, and health behaviors and the presence of MetS in Hispanic women living in an underserved community.

Methods: A retrospective cohort study design. The Adult Treatment Panel …

Strategies For The Improvement Of Healthcare Through Simulation, Roger Lankheet

Dissertations

Title:Strategies for the improvement of healthcare through simulation

Background: Medical errors continue to plague the healthcare industry. The annual rates of morbidity are approximately 2.69 million (AHRQ, 2019), while mortality rates exceed 400,000 per annum (Makary & Daniel, 2016). There may be no panacea to combat these egregious rates. However, simulation of patient care events may better prepare healthcare professionals to prevent medical errors as it has been proven to be an effective learning strategy (Kirkham, 2018), enhancing skills while gaining experiential knowledge, without risk to actual patients.

Purpose: The purpose of this qualitative study was to gain a …

Corporal Punishment In Eastern Nigeria, Gerald N. Nwafor

Dissertations

In Nigeria, corporal punishment is used widely in Nigeria’s judicial system, the home, and the classroom. The prevalent opinion in the education community is that corporal punishment helps students learn better and faster, keeps order in the classroom, and promotes a high student performance level. Reliance on corporal punishment is embedded in the religious, cultural, social, and moral beliefs and understanding of life. Corporal punishment takes many forms, but the most common in the school system is caning or flogging, which is the forceful and severe striking of the student’s body, using a stick of wood, usually on the back, …

Exploring Food Traditions Within The Four Quarter Days Of The Irish Calendar Year, Caitríona Nic Philibín

Dissertations

This study explores food traditions in the four quarter days of the Irish calendar year. Imbolg or St. Brigid’s Day, Bealtaine, Lughnasa and Samhain mark significant moments in the agricultural calendar. Food traditions, customs and practices relating to these days are recorded in the abundant resources of the collections in the Folklore Department, University College Dublin. However, to date, with few exceptions, little food specific research has been carried out on these collections. This thesis aims to begin to fill that gap whilst highlighting many opportunities for further research. Throughout this process we witness the illumination of a rich food …

The Effects Of Academic Performance, Demographic Characteristics, Work, And Personal Experiences On Admissions To A Clinical Laboratory Science Training Program, Mara Williams

Dissertations

In this study, I sought to discover factors that contributed to candidate success in gaining admission to the San Jose State University Clinical Laboratory Scientist (CLS) Training Program. Social Cognitive Career Theory suggests that the interplay between an individual’s personal characteristics and life experiences lead to self-efficacy expectations, learning experiences, and goal setting which crystalizes their choice of career. To understand these phenomena in the context of CLS candidates, I used quantitative methods to explore the influence of race, gender, age, work, and personal experience on the probability of a candidate gaining an interview or placing for clinical internship in …

The Effectiveness Of California's System Of Support: Dashboard And Differentiated Assistance, As Perceived By County Office Of Education, Court And Community School Administrators, Jennifer Izant Gonzales

Dissertations

The purpose of this study was to: (1) describe the perceptions of County Office of Education Court and Community School administrators on the accuracy of the California Dashboard/Dashboard Alternative School Status; (2) describe the perceptions of County Office of Education Court and Community School administrators about the efficacy of California’s System of Support, specifically Differentiated Assistance, on impacting equity-focused change in California County Office of Education Court and Community Schools; and (2a) describe the most impactful actions taken by County Office of Education Court and Community Schools related to California’s System of Support. This study was conducted using an integrated …

When Asca And Mtss Merge: A Case Study On Counselor Capacity And The Implementation And Monitoring Of Tier Two Interventions, Tram "Nikki" Dang

Dissertations

The national average student-to-counselor ratio is currently 477 students to one counselor; almost nearly double the 250:1 ratio that the ASCA National Model (2005) recommends. With the existing ratios as high as 1000 students per counselor, counselors and their respective counseling programs provide minimal impact (Carrell, S. E. & Carrell, S. A., 2006). In the Silicon Valley High School District (a pseudonym), high schools with high student-to-counselor ratios may result in subpopulations of students whose needs are not being served and or met. Although counselors express wanting to incorporate additional Tier Two interventions, counselor participants feel they do not have …

Subaltern Leadership Epistemologies: A Phenomenological Study Of Filipinx Administrative Leaders In Higher Education, Tricia Ryan

Dissertations

The purpose of this study was to explore the phenomenon of Filipinx American subaltern leadership epistemologies by unveiling participant life histories, alongside participant leadership approaches and practices carried-out in institutions of higher education in the Unites States. The unique experiences made available in this study provided for an emergence of critical examination into untapped narratives; valuable data from Filipinx voices who, in the research literature about Filipinx Americans, are cited as invisible in educational settings. In-depth qualitative phenomenological research utilizing a three-interview series approach was used to explore and charter the connections between lived experience and current leadership epistemologies for …

Unresolved Issue In Education: Disproportionate Disciplining Of Hispanic Students In Education, Richard Ruiz

Dissertations

The disproportionate disciplining of Hispanic students has been a reoccurring issue that has persisted for decades. With the rising Hispanic populations nationwide and in the state of California, this issue must be addressed. Therefore, to contribute to the scholarship of this phenomenon, the author critically examined teacher and administrator perceptions and attitudes about students who embody a stereotypical urban street subculture. The purpose of this convergent parallel mixed-methods study was to examine the interplay of race, cultural capital, community, and communication, with the disproportionate disciplining of Hispanic students in schools where they are a minority population. The findings of this …

Perceptions Of The Influence Of Cell Phones And Social Media Usage On Students’ Academic Performance, Anne Tran

Dissertations

Cell phones, ubiquitous in many high schools, are often credited with helpingstudents connect with people and learn new concept. However, literature indicates that problematic cell phone and social media usage are negatively associated with student academic performance and mental well-being. As cell phone technologies continue to evolve, they become an integral part of today’s learning environment. Through the use of the documentary exploratory research method, this dissertation investigates stakeholders’ perceptions of the influence of cell phone and social media usage on high school students’ academic performance. Additionally, this study explores the current policies and practices regarding cell phone use in …

An Evaluation Of Timing Of Discharge Instruction And The Impact On Patient Satisfaction, Donald L. Tanner

Dissertations

Ambulatory surgical patients face unique challenges with discharge instruction comprehension and retention. The volume of information provided to patients, frequently combined with sedatives and narcotics, leads to failure to retain this crucial information needed for home care. At one healthcare facility, this failure to retain was reflected in the Outpatient Ambulatory Surgery- Consumer Assessment of Healthcare Providers and Systems (OAS-CAHPS) survey scores which were below the facility goal of 75th percentile nationally. This project implemented a preoperative teaching intervention to provide written and verbal discharge instructions in the preoperative area prior to the administration of anesthetic agents to improve patient …

A Critical Analysis Of Gender Inequality In The Chef Profession In Ireland, Mary Farrell

Dissertations

As an original piece of research, this dissertation investigates the factors that contribute to gender inequality in the chef profession in Ireland. The aims of the study sought to establish the extent of gender inequality and the factors that contribute to it in the chef profession in Ireland. The first national gender inequality survey was designed to collect empirical and qualitative data of the chef profession. Joan Acker’s (1990) original theory of gendered organisations and Connell’s (1995) concept of hegemonic masculinity were employed to undertake a systematic gender analysis of the data emanating the survey. This analysis reveals, for the …

Expanding Consciousness Across Disruptions: Developmental Leadership Coaches Growing Together Through Action Inquiry, Ilaria Distefano

Dissertations

The planetary, societal, and personal challenges of our times call for the expansion of leaders’ consciousness. More comprehensive and integrated ways of making meaning of self and systems are required to navigate the current levels of complexity. Based on constructive-developmental theory, developmental leadership coaching supports leaders in this evolution.

The literature on developmental coaching converges on the relevance of the coach’s meaning-making to coaching outcomes and processes. The purpose of this study was to explore how seven developmental leadership coaches, including the researcher, could evolve their consciousness, capacities and skills using action inquiry. Seven meetings were held, and knowledge and …

Grassroots Talent Development At La Maestra: Understanding The Perceptions Of Leaders And Staff, Gorn Huvanandana

Dissertations

This dissertation explored the leadership and staff perceptions of talent management (TM) in the San Diego-based community health center La Maestra. The organization initiated a scheme called Grassroots Talent Development (GTD) that focuses on developing its internal talents from the ground up, including using mentorship, on-the-job training, problem-solving techniques, and mission attachment reinforcement. The distinctive use of a holistic wellness model, Circle of Care (CoC), stemming from its core mission to serve underserved populations, has not only driven how the organization functions but also how it attracts, develops, and retains a diverse pool of talents. La Maestra innovated programs for …

An Inferentially Robust Look At Two Competing Explanations For The Surge In Unauthorized Migration From Central America, Nick Santos

Dissertations

The last 8 years have seen a dramatic increase in the flow of Central American apprehensions by the U.S. Border Patrol. Explanations for this surge in apprehensions have been split between two leading hypotheses. Most academic scholars, immigrant advocates, progressive media outlets, and human rights organizations identify poverty and violence (the Poverty and Violence Hypothesis) in Central America as the primary triggers responsible. In contrast, while most government officials, conservative think tanks, and the agencies that work in the immigration and border enforcement realm admit poverty and violence may underlie some decisions to migrate, they instead blame lax U.S. immigration …

Leadership Development In Saudi Arabia’S Private Sector: A Mixed Methods Approach, Khaled Hanaky

Dissertations

There is currently a proliferation of business-focused leadership development programs in Saudi Arabia. These programs represent a reaction to the shortage of qualified leaders who can drive and sustain both recent and future advances introduced by Saudi Vision 2030, the national transformation program that is introducing social and economic reforms. Importantly, business leadership development has not been studied in this context of contemporary Saudi Arabia.

This study examined the state of Saudi leadership development programs by employing an explanatory sequential case study design that focused on a particular leadership development program. Through the use of surveys and participant interviews, results …

Understanding The Benefits Of Experiential Learning For Executive Leader Development: A Mixed Methods Approach, Bruce Loveless

Dissertations

This study sought to understand the benefits of using experiential learning methods (such as outdoor activities) for executive leader development from the perspective of senior corporate, government, and nonprofit leaders. Increasingly, executive development programs are embracing “learning by doing” by incorporating experiential activities. Although most programs are influenced by developmental psychology (such as stage theory), this study integrated perspectives from adult, transformative, and experiential learning with common practices in outdoor adventure education into a new conceptual framework for experiential leader development with four types of experiences: intrapersonal, interpersonal, managerial, and environmental. This study fills a gap in research literature regarding …

Head Of School Retention In Independent Schools, Kevin Yaley

Dissertations

According to the National Association of Independent Schools (2020), independent schools across the country continue to experience an increasing number of head-of-school vacancies, both expected and unexpected. Save for the departures by heads who are retiring or obviously chasing greener pastures, the reasons why an increasing number of heads are departing at a disquieting rate are as enigmatic as the departures themselves.

As part of its governance responsibilities, the board has unconditional authority over the employment of the head, including, most especially, the ability to influence the retention of the head. Unfortunately, since these boards of trustees operate independently, there …

Does Winning Matter? An Examination Of The Impact Of Success On Former Student-Athlete Philanthropic Giving, Zach Harris

Dissertations

Intercollegiate athletic departments (ICAs) rely on philanthropic giving to remain relevant in the “arms race” that is college athletics. Donations provide the necessary resources (scholarships, upgraded facilities, etc.) to compete with rival programs for prospective student-athletes and fans. Previous research in ICA philanthropy has found that team success is one of the key factors driving donations to athletic programs. However, much of the research in this field has centered on athletic giving on a macro-level, focusing on the overall alumni population of an institution. While this research is important for colleges and universities, it misses on measuring the impact that …

Strategies Superintendents Use To Build Leadership Capacity With Executive Teams, Andrew Leonard Giannini

Dissertations

Purpose: The purpose of this qualitative, multiple case study was to describe how exemplary superintendents build leadership capacity with their executive teams using Kirtman’s (2014) Seven Competencies for School Leadership.

Methodology: This multiple case study used purposeful criterion sampling and recommendations from a panel of experts to identify seven superintendents throughout the United States to participate in the study. Each superintendent was interviewed with questions developed and field-tested by the researcher and provided artifacts. Collected data was coded using case-based, cross-case analysis to identify themes in how superintendents build leadership capacity with their executive teams.

Findings: The findings identified 21 …