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2015

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Spectroelectrochemistry And Modeling Of Enargite (Cu3ass4) Under Atmospheric Conditions, Robert Nick Gow Jan 2015

Spectroelectrochemistry And Modeling Of Enargite (Cu3ass4) Under Atmospheric Conditions, Robert Nick Gow

Graduate Student Theses, Dissertations, & Professional Papers

Raman spectroscopy has been a useful technology for fundamental studies in the mining industry. Surface changes through oxidation and reduction reactions can be monitored in-situ, allowing the changes to be monitored in real time. In conjunction with cyclic voltammetry, to change the conditions at which a mineral surface is subjected to, reaction and reaction conditions can be identified. The results can then be plotted to create a map similar to that of an EH-pH diagram.

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Non-Coding Rnas Of The Q Fever Agent, Coxiella Burnetii, Indu Ramesh Warrier Jan 2015

Non-Coding Rnas Of The Q Fever Agent, Coxiella Burnetii, Indu Ramesh Warrier

Graduate Student Theses, Dissertations, & Professional Papers

Coxiella burnetii is an obligate intracellular bacterial pathogen that undergoes a biphasic developmental cycle, alternating between a small cell variant (SCV) and a large cell variant (LCV). Despite the remarkable niche and life cycle of C. burnetii, little is known about its modes of regulation and the roles that non-coding RNAs play in its growth and development. One such element is the intervening sequence (IVS); a 444-nt RNA element that is inserted within helix 45 of CoxiellaÆs precursor 23S rRNA. C. burnetii may have acquired IVS through horizontal transfer, and it has been subsequently maintained by all strains of C. …

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Intraosseous Vascular Access In The Emergency Department, Nicole M. Helsper Devoe Jan 2015

Intraosseous Vascular Access In The Emergency Department, Nicole M. Helsper Devoe

Doctor of Nursing Practice (DNP) Practice Innovation Projects

Current guidelines and recommendations from the American College of Surgeons Advanced Trauma Life Support and the American Heart Association (AHA) include intraosseous (IO) access as a second-line alternative when delayed or failed peripheral vascular access occurs in emergent or trauma situations. IO access is underutilized in the emergency department (ED) due to registered nurses’ knowledge deficit, lack of training and education, and lack of supplies (Cheung, Rosenberg, & Vaillancourt, 2014). The National Association of EMS Physicians (NAEMSP) supports the use of IO access and describes IOs as a significant time saving intervention in achieving vascular access and decreasing the time …

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Chemotherapy-Induced Peripheral Neuropathy Education And Assessment, Kim Schmidt Jan 2015

Chemotherapy-Induced Peripheral Neuropathy Education And Assessment, Kim Schmidt

Doctor of Nursing Practice (DNP) Practice Innovation Projects

Chemotherapy-induced peripheral neuropathy (CIPN) is a debilitating side effect of most chemotherapeutic agents used to treat cancer. To ensure the best possible care and outcomes for patients, nurses should be at the forefront of CIPN education and patient assessments. The purpose of this project was to evaluate an educational intervention for oncology nurses on CIPN and CIPN patient assessment by assessing the knowledge and confidence level of nurses in assessing CIPN before and after an educational session. The methodology for this project was a quasi-experimental one-group pretest multiple posttest design with a convenience sample of nurses employed by the Cancer …

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Does The Presumption Of Validity Matter? An Experimental Assessment, Jeremy W. Brock Jan 2015

Does The Presumption Of Validity Matter? An Experimental Assessment, Jeremy W. Brock

University of Richmond Law Review

No abstract provided.

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Infinite Product Representations For Kernels And Iteration Of Functions, Daniel Alpay, Palle Jorgensen, Izchak Lewkowicz, Itzik Marziano Jan 2015

Infinite Product Representations For Kernels And Iteration Of Functions, Daniel Alpay, Palle Jorgensen, Izchak Lewkowicz, Itzik Marziano

Mathematics, Physics, and Computer Science Faculty Articles and Research

We study infinite products of reproducing kernels with view to their use in dynamics (of iterated function systems), in harmonic analysis, and in stochastic processes. On the way, we construct a new family of representations of the Cuntz relations. Then, using these representations we associate a fixed filled Julia set with a Hilbert space. This is based on analysis and conformal geometry of a fixed rational mapping R in one complex variable, and its iterations.

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Aerosol Optical Properties Over Mount Song, A Rural Site In Central China, Lunche Wang, Wei Gong, Ramesh P. Singh, Xiangao Xia, Huizheng Che, Ming Zhang, Hong Lin Jan 2015

Aerosol Optical Properties Over Mount Song, A Rural Site In Central China, Lunche Wang, Wei Gong, Ramesh P. Singh, Xiangao Xia, Huizheng Che, Ming Zhang, Hong Lin

Mathematics, Physics, and Computer Science Faculty Articles and Research

Seasonal variations of aerosol optical depth (AOD), Ångström exponent (α), single scattering albedo (SSA), water vapor content (WVC), aerosol size distribution and refractive index at Mount Song, a rural site in Central China are analyzed using ground-based sunphotometer data for the period April 2012 to May 2014 for the first time. The results show that the area is highly polluted even the major anthropogenic emission sources are far away. Seasonal mean AOD is high (0.72 ± 0.52) during summer (June–August) season and low (0.51 ± 0.38) during autumn (September–November) season. The monthly mean α is very low (0.81 ± 0.30) …

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E-Mail Authorship Attribution Using Customized Associative Classification, Michael R. Schmid, Farkhund Iqbal, Benjamin C.M. Fung Jan 2015

E-Mail Authorship Attribution Using Customized Associative Classification, Michael R. Schmid, Farkhund Iqbal, Benjamin C.M. Fung

All Works

E-mail communication is often abused for conducting social engineering attacks including spamming, phishing, identity theft and for distributing malware. This is largely attributed to the problem of anonymity inherent in the standard electronic mail protocol. In the literature, authorship attribution is studied as a text categorization problem where the writing styles of individuals are modeled based on their previously written sample documents. The developed model is employed to identify the most plausible writer of the text. Unfortunately, most existing studies focus solely on improving predictive accuracy and not on the inherent value of the evidence collected. In this study, we …

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Enhancing Social Science Research In The Uae: An Open Source Software Solution University Of Sharjah (Uos) Case Study, Manar Abu Talib, Muhammed Abuodeh, Adhraa Almansoori, Arwa Alnauimi Jan 2015

Enhancing Social Science Research In The Uae: An Open Source Software Solution University Of Sharjah (Uos) Case Study, Manar Abu Talib, Muhammed Abuodeh, Adhraa Almansoori, Arwa Alnauimi

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© 2015 The Manar Abu Talib, Muhammed AbuOdeh, Adhraa Almansoori and Arwa AlNauimi. Researchers, practitioners and social scientists all agree on the enormous importance of social science research in advancing human knowledge and informing public policy makers. The National Research Foundation, along with other organizations in the UAE, is leading the initiative to integrate the efforts of social research institutions in order to support the decision making process in the UAE. As indicated by a number of social researchers during the last forum held on May 29-30, 2012, at the Emirates Center for Strategic Studies and Research, Abu Dhabi, UAE, …

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Winter Habitat Associations Of Blackbirds And Starlings Wintering In The South-Central United States, Matthew Strassburg, Shawn M. Crimmins, Patrick C. Mckann, Wayne E. Thogmartin Jan 2015

Winter Habitat Associations Of Blackbirds And Starlings Wintering In The South-Central United States, Matthew Strassburg, Shawn M. Crimmins, Patrick C. Mckann, Wayne E. Thogmartin

Human–Wildlife Interactions

Birds can cause extensive crop damage in the United States. In some regions, depredating species comprise a substantial portion of the total avian population, emphasizing their importance both economically and ecologically. We used the National Audubon Society Christmas Bird Count data from the south-central United States and mixed-effects models to identify habitat factors associated with population trend and abundance for 5 species: red-winged blackbird (Agelaius phoeniceus), common grackle (Quiscalus quiscula), rusty blackbird (Euphagus carolinus), Brewer’s blackbird (Euphagus cyanocephalus), and European starling (Sturnus vulgaris). Overall, we found positive associations between bird …

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Factors Influencing Digital Forensic Investigations: Empirical Evaluation Of 12 Years Of Dubai Police Cases, Ibtesam Alawadhi, Janet Read, Andrew Marrington, Virginia Franqueira Jan 2015

Factors Influencing Digital Forensic Investigations: Empirical Evaluation Of 12 Years Of Dubai Police Cases, Ibtesam Alawadhi, Janet Read, Andrew Marrington, Virginia Franqueira

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In Digital Forensics, the number of person-hours spent on investigation is a key factor which needs to be kept to a minimum whilst also paying close attention to the authenticity of the evidence. The literature describes challenges behind increasing person-hours and identifies several factors which contribute to this phenomenon. This paper reviews these factors and demonstrates that they do not wholly account for increases in investigation time. Using real case records from the Dubai Police, an extensive study explains the contribution of other factors to the increase in person-hours. We conclude this work by emphasizing on several factors affecting the …

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Monolithic Optofluidic Ring Resonator Lasers Created By Femtosecond Laser Nanofabrication, Hengky Chandrahalim, Qiushu Chen, Ali A. Said, Mark Dugan, Xudong Fan Jan 2015

Monolithic Optofluidic Ring Resonator Lasers Created By Femtosecond Laser Nanofabrication, Hengky Chandrahalim, Qiushu Chen, Ali A. Said, Mark Dugan, Xudong Fan

Faculty Publications

We designed, fabricated, and characterized a monolithically integrated optofluidic ring resonator laser that is mechanically, thermally, and chemically robust. The entire device, including the ring resonator channel and sample delivery microfluidics, was created in a block of fused-silica glass using a 3-dimensional femtosecond laser writing process. The gain medium, composed of Rhodamine 6G (R6G) dissolved in quinoline, was flowed through the ring resonator. Lasing was achieved at a pump threshold of approximately 15 μJ/mm2. Detailed analysis shows that the Q-factor of the optofluidic ring resonator is 3.3 × 104, which is limited by both solvent …

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High-Resolution Bottom-Loss Estimation Using The Ambient-Noise Vertical Coherence Function, Lanfranco Muzi, Martin Siderius, Jorge E. Quijano, Stan E. Dosso Jan 2015

High-Resolution Bottom-Loss Estimation Using The Ambient-Noise Vertical Coherence Function, Lanfranco Muzi, Martin Siderius, Jorge E. Quijano, Stan E. Dosso

Electrical and Computer Engineering Faculty Publications and Presentations

The seabed reflection loss (shortly "bottom loss") is an important quantity for predicting transmission loss in the ocean. A recent passive technique for estimating the bottom loss as a function of frequency and grazing angle exploits marine ambient noise (originating at the surface from breaking waves, wind, and rain) as an acoustic source. Conventional beamforming of the noise field at a vertical line array of hydrophones is a fundamental step in this technique, and the beamformer resolution in grazing angle affects the quality of the estimated bottom loss. Implementation of this technique with short arrays can be hindered by their …

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Eigenvector Pruning Method For High Resolution Beamforming, Jorge E. Quijano, Lisa M. Zurk Jan 2015

Eigenvector Pruning Method For High Resolution Beamforming, Jorge E. Quijano, Lisa M. Zurk

Electrical and Computer Engineering Faculty Publications and Presentations

This paper introduces an eigenvector pruning algorithm for the estimation of the signal-plus-interference eigenspace, required as a preliminary step to subspace beamforming. The proposed method considers large-aperture passive array configurations operating in environments with multiple maneuvering targets in background noise, in which the available data for estimation of sample covariances and eigenvectors are limited. Based on statistical properties of scalar products between deterministic and complex random vectors, this work defines a statistically justified threshold to identify target-related features embedded in the sample eigenvectors, leading to an estimator for the signal-bearing eigenspace. It is shown that data projection into this signal …

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Coupled-Oscillator Associative Memory Array Operation For Pattern Recognition, Dmitri E. Nikonov, Gyorgy Csaba, Wolfgang Porod, Tadashi Shibata, Danny Voils, Dan Hammerstrom, Ian A. Young, George I. Bourianoff Jan 2015

Coupled-Oscillator Associative Memory Array Operation For Pattern Recognition, Dmitri E. Nikonov, Gyorgy Csaba, Wolfgang Porod, Tadashi Shibata, Danny Voils, Dan Hammerstrom, Ian A. Young, George I. Bourianoff

Electrical and Computer Engineering Faculty Publications and Presentations

Operation of the array of coupled oscillators underlying the associative memory function is demonstrated for various interconnection schemes (cross-connect, star phase keying and star frequency keying) and various physical implementation of oscillators (van der Pol, phase-locked loop, spin torque). The speed of synchronization of oscillators and the evolution of the degree of matching is studied as a function of device parameters. The dependence of errors in association on the number of the memorized patterns and the distance between the test and the memorized pattern is determined for Palm, Furber and Hopfield association algorithms.

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Wavelet-Coupled Machine Learning Methods For Drought Forecast Utilizing Hybrid Meteorological And Remotely-Sensed Data, R. Tan, Marek Perkowski Jan 2015

Wavelet-Coupled Machine Learning Methods For Drought Forecast Utilizing Hybrid Meteorological And Remotely-Sensed Data, R. Tan, Marek Perkowski

Electrical and Computer Engineering Faculty Publications and Presentations

In this study, a statistical drought early warning method is proposed using novel machine learning algorithms, with the inclusion of multiple drought-related attributes from precipitation, satellite-derived land cover vegetation indices, and surface discharge. The forecast is made for the long-term hydrological drought in the region of Central Valley, California. The wavelet transform analysis is employed in combination with support vector regression and artificial neural network algorithms for improving the drought prediction effectiveness. The performance of the drought prediction is evaluated using three statistical metrics: Coefficient of Determination (R2 ), Root-Mean-Square Error (RMSE), and Mean-Absolute-Error (MAE). The results clearly indicate that …

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Defensive Routines In Engineering Managers And Non-Engineering Managers -- A Case Analysis, Tyria Riley, Elizabeth A. Cudney Jan 2015

Defensive Routines In Engineering Managers And Non-Engineering Managers -- A Case Analysis, Tyria Riley, Elizabeth A. Cudney

Engineering Management and Systems Engineering Faculty Research & Creative Works

There is a perception that engineers experience challenges in areas such as communication, conflict resolution, and leadership. Defensive routines are actions implemented as a result of being in an embarrassing or threatening situation. This research uses a case study approach to measure whether defensive routines are more common in engineering managers or non-engineering managers. Twenty-seven managers created case studies based on their unique experiences as managers. These case studies were scored, and the results of this research indicate that engineering managers employ defensive routines more commonly than non-engineering managers.

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Building A Scholarly Network In Learning Communities At The University Of Nebraska–Lincoln, Charlene Maxey-Harris, Lorna M. Dawes Jan 2015

Building A Scholarly Network In Learning Communities At The University Of Nebraska–Lincoln, Charlene Maxey-Harris, Lorna M. Dawes

University of Nebraska-Lincoln Libraries: Faculty Publications

In 2011 the Chancellor at the University of Nebraska – Lincoln (UNL) charged each department and academic unit within the university to create programs and strategies to increase student enrollment within the next six years. The UNL Libraries embraced this goal by becoming more involved in the first-year experience programs and the first-year learning communities. This chapter will outline how the UNL Libraries gained library administration support to hire a Learning Communities/First-Year Experience Librarian and describe how they applied the theory of threshold concepts to develop a series of workshops and e-booklets to teach information literacy skills to students affiliated …

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Vulnerable Populations' Perspectives On Climate Engineering, Wylie Allen Carr Jan 2015

Vulnerable Populations' Perspectives On Climate Engineering, Wylie Allen Carr

Graduate Student Theses, Dissertations, & Professional Papers

Over the past decade, climate engineering—or the intentional, large-scale manipulation of the global environment to reduce or reverse anthropogenic climate change—has garnered increasing attention from scientists and policymakers. However, impacts from climate engineering will be unevenly distributed. Vulnerable populations already being disproportionately impacted by climate change might benefit or be made worse off. As such, legislators, members of the public, and academics alike have asserted that vulnerable populations deserve to have a say in the research and development of climate engineering technologies and the policies that will govern them. These calls have gone largely unfulfilled. The research presented in this …

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Strategies To Enhance Learning In A Large Engineering Economics Course: Including Students’ Perceived Values In The Instructional Redesign Process, Kellie S. Grasman, D. Cernusca Jan 2015

Strategies To Enhance Learning In A Large Engineering Economics Course: Including Students’ Perceived Values In The Instructional Redesign Process, Kellie S. Grasman, D. Cernusca

Engineering Management and Systems Engineering Faculty Research & Creative Works

Purposeful implementation of technology in instructional design presents opportunities to increase institutional efficiency while simultaneously improving instructional quality. This paper presents findings from the implementation of a hybrid/buffet approach in an undergraduate Engineering Economics large course. A Design-Based Research (DBR) approach informed the instructional redesign and measured its effectiveness through multiple iterations, or macro-cycles, of implementation. Overall, pedagogical structure and specific technology solutions applied to each course component are described, as well as preliminary measures of effectiveness and student perception from a pilot offering of the hybrid/buffet course. Encouraged by positive preliminary results, a second implementation informed further study of …

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The Last Wolves Of Isle Royale, Kasey Rahn Jan 2015

The Last Wolves Of Isle Royale, Kasey Rahn

Graduate Student Theses, Dissertations, & Professional Papers

Isle Royale National Park, located in Michigan, is home to a wolf population that is in decline due to complications from inbreeding. Scientists and managers struggle to decide whether to intervene. Some scientists promote bringing new wolves to the island to restore the population because they say the decline is human-caused. Others promote “watchful waiting.” To date, the National Park Service has not interceded and is currently undergoing a management planning process. The issue raises questions about what it means to manage wildlife in an era of change. Should humans intervene to protect wildlife in the face of climate change …

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An Adventurous E-Reader For Non-Linear E-Books, Emily Palmieri Jan 2015

An Adventurous E-Reader For Non-Linear E-Books, Emily Palmieri

Graduate Student Theses, Dissertations, & Professional Papers

Non-linear books are published in print format as sequential text or digitally as collections of documents linked together via hyperlinks. These publication methods are problematic for readers and authors alike. Readers are often presented with unintuitive interfaces that do not indicate critical contextual information; authors struggle to order non-linear content into linear formats or to create and distribute their work in resource intensive digital mediums. While standard e-books might be a convenient format for non-linear books, current e-readers used to view them are severely limited; they mimic the format of physical books and fail to solve problems inherent in displaying …

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On The Map, But Off The Grid: Perceptions Of Authenticity In Polebridge, Montana, William Klaczynski Jan 2015

On The Map, But Off The Grid: Perceptions Of Authenticity In Polebridge, Montana, William Klaczynski

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

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A Service Oriented Broker-Based Approach For Dynamic Resource Discovery In Virtual Networks, Sleiman Rabah, May El Barachi, Nadjia Kara, Rachida Dssouli, Joey Paquet Jan 2015

A Service Oriented Broker-Based Approach For Dynamic Resource Discovery In Virtual Networks, Sleiman Rabah, May El Barachi, Nadjia Kara, Rachida Dssouli, Joey Paquet

All Works

© 2015, Rabah et al.; licensee Springer. In the past few years, the concept of network virtualization has received significant attention from industry and research fora. This concept applies virtualization to networking infrastructures by enabling the dynamic creation of several co-existing logical network instances (or virtual networks) over a shared physical network infrastructure (or substrate network). Due to the potential it offers in terms of diversifying existing networks and ensuring the co-existence of heterogeneous network architectures on top of shared substrates, network virtualization is often considered as an enabler of a polymorphic Internet and a cornerstone of the future Internet …

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Success Factors Of Small Business Owners Of Independent Financial Planning Firms, Joanne Snider Jan 2015

Success Factors Of Small Business Owners Of Independent Financial Planning Firms, Joanne Snider

Walden Dissertations and Doctoral Studies

Small Business Administration statistics indicate that 20% of small businesses fail within the first 2 years and 50% fail within 5 years. The purpose of this case study was to explore the success factors and strategies of 12 small business owners of independent financial planning firms who achieved profitability beyond 5 years. A gap exists in the literature concerning such business owners, and their experiences provide valuable information to others desiring to start or maintain a financial planning business. The conceptual framework was entrepreneurship theory and Porter's 5 forces model of competitive strategy. The data were gathered via semistructured interviews …

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Black Online, Doctoral Psychology Graduates' Academic Achievement: A Phenomenological Self-Directed Learning Perspective, Cathy Q. Williams Jan 2015

Black Online, Doctoral Psychology Graduates' Academic Achievement: A Phenomenological Self-Directed Learning Perspective, Cathy Q. Williams

Walden Dissertations and Doctoral Studies

Guided by the conceptual framework of self-directed learning and culture, this study investigated the effectiveness of Title IV private, for-profit colleges and universities (FPCUs). Little research has examined this topic, which is problematic considering the disproportionate rate of student loan defaults experienced by Black FPCU borrowers. A phenomenological design was used to explore the meaning of academic achievement for Black doctorate recipients who attained a doctorate in psychology through an FPCU. This study specifically examined how Black students experience the completion of doctoral psychology programs at 2 FPCUs and what factors contributed to these students finishing their degrees. A unique-criterion-purposive …

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Effects Of An Online Skills Program On Ela Achievement Among Ged Students, Gwendolyn Amanda Flowers Jan 2015

Effects Of An Online Skills Program On Ela Achievement Among Ged Students, Gwendolyn Amanda Flowers

Walden Dissertations and Doctoral Studies

K-12 schools are more commonly using online learning to supplement traditional classroom learning. Previous online adult education researchers have found no significant differences between traditional and online learning outcomes. However, little research has been done with regard to online General Educational Development (GED)-level learning for adults. The purpose of this quantitative study was to explore the effect of the Skills Tutor program compared with traditional learning on GED student achievement in reading/language arts. The Skills Tutor program was used as a means to address the low GED graduation rates at an adult education program through Memphis City Schools. This research …

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Impact Of Goodwill Organizations And Community Collaboration On Aids-Orphans' Needs In Nyanza Province, Kenya, Anthonia Nwagbo Jan 2015

Impact Of Goodwill Organizations And Community Collaboration On Aids-Orphans' Needs In Nyanza Province, Kenya, Anthonia Nwagbo

Walden Dissertations and Doctoral Studies

A number of researchers have explored the toll of AIDS on the children who have become orphans as a result of the disease; others have investigated the roles of aid-giving agencies on the alleviation of the orphans' situation. However, despite researchers' pointing to the germaneness of community and goodwill agency liaison, no study had examined the impact of such collaboration on the resources available to the orphans. To this end, the heads-of-household of 532 AIDS orphans under 18 years old in Kenya's Nyanza province were surveyed to investigate the impact of community-referral on the state of AIDS orphans with regard …

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Relationship Between Organizational Commitment And Turnover Intentions Among Healthcare Internal Auditors, Mouhamadou Thile Sow Jan 2015

Relationship Between Organizational Commitment And Turnover Intentions Among Healthcare Internal Auditors, Mouhamadou Thile Sow

Walden Dissertations and Doctoral Studies

Insufficient auditing staff has become a challenge facing internal auditing in the healthcare industry. Auditors' turnover rates range from 13.4% to 46.6% in the United States based on the type of organization. The purpose of this correlational study was to examine the relationship between affective commitment, continuance commitment, normative commitment, and turnover intention among auditors. Self-determination theory of motivation was the theoretical framework for examining the employee turnover problem. A random sample of 92 internal auditors was administered the TCM Employee Commitment Survey and Turnover Intention Scales. The model as a whole was able to significantly predict turnover intentions, F(3, …

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Understanding Doctoral Success Factors In Online Education Programs, Carissa Johnson Jan 2015

Understanding Doctoral Success Factors In Online Education Programs, Carissa Johnson

Walden Dissertations and Doctoral Studies

The doctoral student completion rate in the United States is approximately 57% across all disciplines. The purpose of this mixed-methods study was to investigate doctoral students' perceptions of program completion across multiple online doctoral programs at a single university. The quantitative component examined differences in 4 doctoral program completion-related factors between students in 2 capstone completion stages and 6 academic programs. The qualitative component included an analysis of student perceptions of program completion. Attribution theory was used as a framework to understand the ways that personal attributions influence the success of the participants. The Doctoral Completion and Persistence Scale (DCPS) …

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