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Full-Text Articles in Physical Sciences and Mathematics

Supply Chain Managers' Reverse Logistics Strategies To Control Cost Through Risk Mitigation, Lawrence A. Reeves Jan 2019

Supply Chain Managers' Reverse Logistics Strategies To Control Cost Through Risk Mitigation, Lawrence A. Reeves

Walden Dissertations and Doctoral Studies

Supply chain managers in the food and beverage industry face significant challenges regarding the use of effective reverse logistics strategies to reduce supply chain disruptions, control risk, and reduce costs. Through the lens of resource dependence theory, the purpose of this multiple case study was to explore reverse logistics strategies used by supply chain managers in the United States to control cost through risk mitigation. Participants in this study included 5 supply chain managers in the food and beverage distribution industry in the state of Georgia who implemented successful reverse logistics strategies to control cost through risk mitigation. Data were …


Wellness Paradigms In Predicting Stress And Burnout Among Beginning Expatriate Teachers, Kimala Proctor Jan 2019

Wellness Paradigms In Predicting Stress And Burnout Among Beginning Expatriate Teachers, Kimala Proctor

Walden Dissertations and Doctoral Studies

Research indicates that the current teacher shortage is in part due to stress and burnout. A topic that has not been examined is beginning expatriate English medium teachers (EMTs) with 5 years or less of teaching experience in the United Arab Emirates and the relationship between using individualized, self-initiated wellness paradigms and stress, job burnout, and intent to leave the teaching profession. The transactional model of stress and coping, Maslach's multidimensional theory of burnout, and the health promotion model were used to evaluate the moderating effects of the EMTs' burnout and stress levels on their wellness and intent to leave. …


Cybersecurity Policy Development At The State Level: A Case Study Of Middle Tennessee, Daniel Leslie Scherr Jan 2019

Cybersecurity Policy Development At The State Level: A Case Study Of Middle Tennessee, Daniel Leslie Scherr

Walden Dissertations and Doctoral Studies

Cybersecurity is a growing threat not only to nations, critical infrastructure, and major entities, but also to smaller organizations and individuals. The growing number of successful attacks on all manner of U.S. targets highlights the need for effective and comprehensive policy from the local to federal level, though most research focuses on federal policy issues, not state issues. The purpose of this study was to examine the effectiveness of the decision-making process within the current cybersecurity policy environment in a southern state of the United States. Sabatier's advocacy coalition framework served as the theoretical framework for the study. Data were …


Urban Development Of A City In Niger Delta Region Of Nigeria, Chinyere Emmanuel Igwe Jan 2019

Urban Development Of A City In Niger Delta Region Of Nigeria, Chinyere Emmanuel Igwe

Walden Dissertations and Doctoral Studies

The issue of indiscriminate urban expansion is not uncommon in Africa. It has created haphazard, unplanned, and unapproved development that negatively affected urban planning for cities in the Niger Delta Region in Nigeria. Using Stone's urban regime theory, the purpose of this phenomenological study was to explore from the perspective of developers, associations, and government agencies (referred to as stakeholders), the roots causes of indiscriminate urban development and their activities in the process in the Niger Delta Region. Data were collected through semi structured telephone interviews with 10 participants who had at least 5 years experience working in public and …


Knowledge Transfer Strategy Implementation In Contract Organizations, Delano Clyde Hudson Jan 2019

Knowledge Transfer Strategy Implementation In Contract Organizations, Delano Clyde Hudson

Walden Dissertations and Doctoral Studies

Despite economic perils of government shutdowns, foreclosures, bankruptcies, and employee layoffs, some contract leaders consistently fail to implement knowledge transfer strategies that could improve production and profitability and maintain operational readiness when employees transition in and out of the organization. The conceptual framework for this descriptive research study was Nonaka and Takeuchi's socialization, externalization, combination, and internalization model for knowledge creation. A purposive sample of 20 leaders from 2 contract organizations within the south central United States with at least 10 years of experience in contracting were interviewed. Member checking was used for reliability of the synthesized interviews, and triangulation …


Use Of Mobile Telephones: Experiences Of First Responders In Rural African Communities, James Harding Jan 2019

Use Of Mobile Telephones: Experiences Of First Responders In Rural African Communities, James Harding

Walden Dissertations and Doctoral Studies

Emergency medical technicians (EMTs) usually participate in disaster response in rural African communities. Disasters in African communities are often characterized by huge fatalities, which are associated with a slow pace of response. The use of information and communication technology in disaster response is recognized as an effective conduit for enhancing response. Previous research indicates the efficacy of the use of mobile telephones in disaster response in advance countries. However, there remains a critical gap in the available literature on the experiences of EMTs with the use of mobile telephones in disaster response in rural African communities. The purpose of this …


Probabilistic Algorithms, Lean Methodology Techniques, And Cell Optimization Results, Michael Mccurrey Jan 2019

Probabilistic Algorithms, Lean Methodology Techniques, And Cell Optimization Results, Michael Mccurrey

Walden Dissertations and Doctoral Studies

There is a significant technology deficiency within the U.S. manufacturing industry compared to other countries. To adequately compete in the global market, lean manufacturing organizations in the United States need to look beyond their traditional methods of evaluating their processes to optimize their assembly cells for efficiency. Utilizing the task-technology fit theory this quantitative correlational study examined the relationships among software using probabilistic algorithms, lean methodology techniques, and manufacturer cell optimization results. Participants consisted of individuals performing the role of the systems analyst within a manufacturing organization using lean methodologies in the Southwestern United States. Data were collected from 118 …


Potential Solar Consumers' Understanding Of Energy Policy Development In Hawai‘I, Kristin Li Mcgill Jan 2019

Potential Solar Consumers' Understanding Of Energy Policy Development In Hawai‘I, Kristin Li Mcgill

Walden Dissertations and Doctoral Studies

Hawai‘i has implemented renewable energy goals that assume continued investments by solar consumers who seem unaware of their role in the policy's success. Without the renewable resource generation that will come from these investments, the state will be unable to achieve its energy mandate. Using Sabatier and Jenkins-Smith's advocacy coalition framework and Ajzen's theory of planned behavior as the foundation, the purpose of this study was to better understand the perspectives of potential solar consumers on the Island of O‘ahu regarding the state's renewable portfolio standards, their level of knowledge regarding consumer impact on this policy, and their perceptions of …


Relationship Between Perceived Usefulness, Ease Of Use, And Acceptance Of Business Intelligence Systems, Christina Ndiwa Sandema-Sombe Jan 2019

Relationship Between Perceived Usefulness, Ease Of Use, And Acceptance Of Business Intelligence Systems, Christina Ndiwa Sandema-Sombe

Walden Dissertations and Doctoral Studies

In retail, the explosion of data sources and data has provided incentive to invest in information systems (IS), which enable leaders to understand the market and make timely decisions to improve performance. Given that users’ perceptions of IS affects their use of IS, understanding the factors influencing user acceptance is critical to acquiring an effective business intelligence system (BIS) for an organization. Grounded in the technology acceptance model theory, the purpose of this correlational study was to examine the relationship between perceived usefulness (PU), perceived ease of use (PEOU), and user acceptance of business intelligence systems (BIS) in retail organizations. …


Successful Strategies For Retaining Profitability In An Education-Sector It Project, Cassandra Romae Middleton Jan 2019

Successful Strategies For Retaining Profitability In An Education-Sector It Project, Cassandra Romae Middleton

Walden Dissertations and Doctoral Studies

Many information technology (IT) project managers (PMs) and other business leaders lack effective strategies for enhancing communication among their project team members, thereby reducing profitability and organizational cohesion. The purpose of this multiple case study was to explore communication strategies that IT PMs used to successfully complete IT mobile device projects. The conceptual framework for this study was McQuail's mass communication, Craig's communication, and Deming's profound knowledge theory. Purposive sampling method was used to identify 6 successful IT PMs and leaders who worked at 2 leading educations settings located in southeastern South Carolina. Data gathered from the semistructured interviews and …


Knowledge Sharing And Customer Relations In Mobility, Katie Dyretha Moore Jan 2019

Knowledge Sharing And Customer Relations In Mobility, Katie Dyretha Moore

Walden Dissertations and Doctoral Studies

After the events of September 11, 2001, inadequacies in how government organizations and agencies shared knowledge and communication with defense mission partners became readily apparent. A reasonable U.S. government information technology expectation is the integrated use of mobile phones across organizations and agencies. Yet, it is difficult to meet this expectation, as the provisioning process for mobile devices can be different for each government organization or agency. The Department of Commerce National Institute of Standards and Technology does not set provisioning standards, and organizations and agencies determine policies tailored to their particular needs. Using Schein's theory on organizational culture, the …


Sustainable Development Economy: Macroeconomic Policy And Microeconomic Impact Of Public Private Partnerships, Richard Berkshire Jan 2019

Sustainable Development Economy: Macroeconomic Policy And Microeconomic Impact Of Public Private Partnerships, Richard Berkshire

Walden Dissertations and Doctoral Studies

The impact of public private partnership (PPP) on Dallas, Texas economic development activities is debated through many forms of academic studies. The purpose of this study was to bridge the research gap in PPP impact on sustainable economic development from the perspectives of PPP practitioners. The central research question focused on the PPP executives' perspective on the evaluation of PPP programs within a 5-year period (2005 - 2010) in Dallas, Texas. The theoretical framework of this study was based on the policy feedback theory. A qualitative case study design was the case study approach and purposeful sampling interviews were the …


Public Servants' Perceptions Of The Cybersecurity Posture Of The Local Government In Puerto Rico, Julio C. Rodriguez Jan 2019

Public Servants' Perceptions Of The Cybersecurity Posture Of The Local Government In Puerto Rico, Julio C. Rodriguez

Walden Dissertations and Doctoral Studies

The absence of legislation, the lack of a standard cybersecurity framework, and the failure to adopt a resilient cybersecurity posture can be detrimental to the availability, confidentiality, and integrity of municipal information systems. The purpose of this phenomenological study was to understand the cybersecurity posture of municipalities from the perception of public servants serving in information technology (IT) leadership roles in highly populated municipalities in the San Juan-Carolina-Caguas Metropolitan Statistical Area of Puerto Rico. The study was also used to address key factors influencing the cybersecurity posture of these municipalities. The theoretical framework was open system theory used in combination …


Success Factors For Power Project Development Businesses In Sub-Saharan Africa, Kodjo Galevissi Afidegnon Jan 2019

Success Factors For Power Project Development Businesses In Sub-Saharan Africa, Kodjo Galevissi Afidegnon

Walden Dissertations and Doctoral Studies

Despite the financing gap in the sub-Saharan Africa power sector, private investors struggle to capitalize on the opportunity because of the high failure rate of power project development companies. Using the conceptual framework of the behavioral finance theory, this multiple case study was conducted to explore the strategies used by executives of 4 companies in sub-Saharan Africa who successfully developed power projects within the last 5 years. Data were collected from semistructured interviews and a review of government and institutions' websites. Yin's 5-phased cycle for analyzing case studies provided the guidelines for data analysis. Three themes emerged from data analysis: …


Analyzing Small Businesses' Adoption Of Big Data Security Analytics, Henry Mathias Jan 2019

Analyzing Small Businesses' Adoption Of Big Data Security Analytics, Henry Mathias

Walden Dissertations and Doctoral Studies

Despite the increased cost of data breaches due to advanced, persistent threats from malicious sources, the adoption of big data security analytics among U.S. small businesses has been slow. Anchored in a diffusion of innovation theory, the purpose of this correlational study was to examine ways to increase the adoption of big data security analytics among small businesses in the United States by examining the relationship between small business leaders' perceptions of big data security analytics and their adoption. The research questions were developed to determine how to increase the adoption of big data security analytics, which can be measured …


Stakeholder Effects On Shaping Public Policy In Stormwater Management, Galates Sera Jan 2019

Stakeholder Effects On Shaping Public Policy In Stormwater Management, Galates Sera

Walden Dissertations and Doctoral Studies

In Washington, DC, historical data are used to adequately size for rainfall events, and efforts to increase stormwater management requirements are fought against by internal stakeholders. In urban planning, extreme rainfall events, that may occur more frequently than expected, are often not a consideration when designing for green infrastructure facilities. The purpose of this case study was to explore how internal and external stakeholders influence stormwater management policies related to extreme rainfall events in Washington, DC. The power and politics organization theory, which focuses on how individuals obtain influence, and the resource dependency theory, which explores how organizations benefit from …