Management Sciences and Quantitative Methods Commons^™

Estimating The Optimal Cutoff Point For Logistic Regression, Zheng Zhang

Open Access Theses & Dissertations

Binary classification is one of the main themes of supervised learning. This research is concerned about determining the optimal cutoff point for the continuous-scaled outcomes (e.g., predicted probabilities) resulting from a classifier such as logistic regression. We make note of the fact that the cutoff point obtained from various methods is a statistic, which can be unstable with substantial variation. Nevertheless, due partly to complexity involved in estimating the cutpoint, there has been no formal study on the variance or standard error of the estimated cutoff point.

In this Thesis, a bootstrap aggregation method is put forward to estimate the …

Developing A Resilient Network Ambidexterity Scale, Edgar Perez

Antioch University Dissertations & Theses

The purpose of this study was to develop a resilient network ambidexterity scale. While numerous research efforts have considered the dimensions of social capital, resilience, and adaptive capacity to evaluate organizations and communities, few have explored social network indicators within organizations that can be used to mobilize ambidextrous strategies during times of disruption. The emphasis here was to understand the tendencies and behaviors that networks possess to sustain or achieve success along the parallel strategies of optimization and exploration. This study progressed in three specific phases toward filling this void in organizational development literature, using a mixed-methods approach. Phase 1 …

Technical Project Management: Union Of Systems Engineering Processes With Project Management Processes, Deyaaldeen M. Abusal

Open Access Theses & Dissertations

Today, most projects in technical fields utilize project management to complete projects as planned, and some of the projects utilize system engineering to cover the project in both technically and commercially. This Thesis investigates the relationship between Project Management (PM) and Systems Engineering (SE) to determine if a suitably professional level of management and level of quality can be achieved. When studying PM and SE separately and make a comparison between both, there is much overlap between these two mature fields. The project could be planned and completed solely by either process. This study combines both fields of Project Management …

Open Innovation In Small And Medium-Sized Enterprises: Executive And Employee Perception Of Processes And Receptiveness, Bethany A. Davidson

Antioch University Dissertations & Theses

This study explored open innovation activities in small and medium-sized enterprises. Most open innovation research to date has focused on large organizations; however, how large organizations engage in open innovation is very different from that of small and medium-size enterprises. The embedded design, mixed methods study utilized a survey delivered to owners or other organizational executives and employees of small and medium-size enterprises to solicit information regarding whether small and medium-size enterprises are actively engaging in inbound open innovation activities, their motivation for engaging in open innovation, and the sources they are utilizing to obtain new ideas for products and …

Research Methodology In Business: A Starter’S Guide, Mohamed Af Ragab, Amr Arisha

Articles

A cardinal requisite of successful research lies in the proper selection of the research methodology applied to achieve research objectives using the available resources. In addition to acquiring sufficient knowledge of their specific research topic, researchers are urged to develop good understanding of alternative research methodologies at their disposal to be able to identify the best-suited methods to address the research question. This, however, often poses a challenge for novice researchers who face difficulty in grasping the vast methodology landscape and its encompassing array of debates. The purpose of this paper is to provide new researchers with a comprehensive overview …

Assessing The Validity And Reliability Of Family Factors On Physical Activity: A Case Study In Turkey, Sharalyn Steenson, Hilal Ozcebe, Umut Arslan, Hande Konsuk Unlu, Ozgur M. Araz, Mahmut Yardim, Sarp Uner, Nazmi Bilir, Terry T.-K. Huang

Department of Supply Chain Management and Analytics: Faculty Publications

Background: Childhood obesity rates have been rising rapidly in developing countries. A better understanding of the risk factors and social context is necessary to inform public health interventions and policies. This paper describes the validation of several measurement scales for use in Turkey, which relate to child and parent perceptions of physical activity (PA) and enablers and barriers of physical activity in the home environment.

Method: The aim of this study was to assess the validity and reliability of several measurement scales in Turkey using a population sample across three socio-economic strata in the Turkish capital, Ankara. Surveys were conducted …

Shared Team Experiences And Team Effectiveness: Unpacking The Contingent Effects Of Entrained Rhythms And Task Characteristics, Margaret M. Luciano, Amy L. Bartels, Lauren D'Innocenzo, M. Travis Maynard, John E. Mathieu

Department of Management: Faculty Publications

This study explores the conditions under which shared team task-specific (STTS) experiences in crew-based arrangements may negatively influence team effectiveness.We suggest that the entrained rhythms featured in social entrainment theory act as a dual-edged sword with the potential to generate complacency detriments in addition to the commonly cited synchronization benefits. We argue that the manifestation and influence of the countervailing forces (i.e., synchronization and complacency) on the STTS experience—team effectiveness relationship will depend on salient task characteristics (i.e., frequency and difficulty). More specifically, frequently performed tasks create conditions for complacency tomanifest (generating an inverted-U shaped relationship between STTS experience—team efficiency), …

“Optimizing The Performance Of Mean-Variance Portfolios In Various Markets: An “Old-School” Approach”, Roberto Stein, Orlando E. Contreras-Pacheco

Department of Management: Faculty Publications

The authors study the performance of mean-variance optimized (MVO) equity portfolios for retail investors in various markets in the U.S. and around the world. Actively managed equity mutual funds have relatively high fees and tend to underperform their benchmark. Index funds such as exchange traded funds still charge appreciable fees, and only deliver the performance of the benchmark. The authors find that MVO portfolios are relatively easy to manage by a retail investor, and that they tend to outperform their benchmark or, at worst, equal its performance, even after adjusting for risk. Moreover, they show that the performance of these …

Innovation For Creating A Smart Future, Sang M. Lee, Silvana Trimi

Department of Management: Faculty Publications

tToday, we live in a dynamic and turbulent global community. The wave of mega-trends, including rapidchange in globalization and technological advances, is creating new market forces. For any organizationto survive and prosper in such an environment, innovation is imperative. However, innovation is nolonger just for creating value to benefit individuals, organizations, or societies. The ultimate purpose ofinnovation should be much more far reaching, helping create a smart future where people can enjoy thebest quality of life possible. Thus, innovation must search for intelligent solutions to tackle major socialills, seek more proactive approaches to predict the uncertain future, and pursue strategies …

Innovation: From Small “I” To Large “I”, Sang M. Lee

Department of Management: Faculty Publications

Innovation is the lifeline for every organization. The primary purpose of innovation is to apply new ideas or technologies to create new or added value for the organization. This narrow goal is for small “i”. In the dynamic digital age, however, the goal of innovation should be much more aspirational and noble: “doing well by doing good” for the society at large and humanity. This lofty goal of innovation is for large “I”. In this paper, we review the evolution process of innovation and propose how innovation can disrupt the barriers to creating a smart future, the aspirational goal of …

Examining Follower Responses To Transformational Leadership From A Dynamic, Person–Environment Fit Perspective, Bennett J. Tepper, Nikolaos Dimotakis, Lisa Schurer Lambert, Joel Koopman, Fadel K. Matta, Hee Man Park, Wongun Goo

Department of Management: Faculty Publications

We invoke the person–environment fit paradigm to examine on a daily basis follower affective, attitudinal, and behavioral responses to transformational leadership needed and received. Results from two experience sampling method (ESM) studies suggested that positive affect was higher on days when transformational leadership received fit follower needs (compared to days when the amount received was deficient or in excess of follower needs) and on days when absolute levels of fit was higher. We also found that positive affect mediated the within-person effects of transformational leadership needed and received on subordinates’ daily work attitudes (Studies 1 and 2) and organizational citizenship …

Entrepreneurship Everywhere: Across Campus, Across Communities, And Across Borders, Jeffrey S. Hornsby, Jake G. Messersmith, Matthew Rutherford, Sharon Simmons

Department of Management: Faculty Publications

This paper introduces the theme of this special issue related to “Entrepreneurship Everywhere: Across Campus, Across Communities, and Across Borders.” We explore three critical points as we set up the accepted articles for the special issue. First, if we are everywhere are we anywhere? Second, we focus on the importance of collaboration. Third, we discuss the importance of strategically planning on how your efforts intervene or integrate into the wider ecosystem.

Entrepreneurship is everywhere. A search of the term “entrepreneurship” on Google yields 132 million results. By comparison a search on “strategic management” yields a mere 17.2 million results. Despite …

Market-Entry Strategies Of Startup Owners, Evgeny Tsaplin

Walden Dissertations and Doctoral Studies

Russia's startups fail at high rates. The purpose of this multiple case study was to understand the market-entry strategies used by accelerated startup managers to succeed in business longer than the first 3 years. The target population for this study was 3 startup owners who completed an acceleration program from the Internet Initiatives Development Fund and continued to operate businesses that generated revenue. The participants in the study were located in 3 different cities in Russia: Moscow, Saint Petersburg, and Tomsk. The conceptual framework for the study was Raheem and Akhuemonkhan's theory of enterprise development and von Bertalanffy's general system …

Attraction And Retention Of Individual Donor Funding In Nonprofit Organizations, Andria Coleman

Walden Dissertations and Doctoral Studies

Individual donors are an important source of revenue for nonprofit organizations. However, there is limited information on the attraction and retention of individual donors in nonprofit organizations. This single-case study addressed strategies 3 nonprofit leaders in the Northeast United States use to attract and retain individual donors. The conceptual framework was Kaplan and Norton's strategy map and the 2015-2016 Baldrige Excellence Framework used to evaluate organizational performance. Data collection included semistructured interviews; review of company documents; analysis of data available via GuideStar, an online provider of information on U.S. nonprofit organizations; analysis of data available about U.S. agencies; and review …

Instructional Behavior And Its Impact On Student Engagement, Debra Joan Crumpton

Walden Dissertations and Doctoral Studies

The purpose of this quantitative study was to expand understanding of leadership behaviors and their influence on follower engagement. Researchers have shown that engagement is a predictor of retention and organizational performance. Leadership theory and the conceptual framework of worker engagement were the study's theoretical anchors. Despite a proliferation of leadership studies, engagement antecedents are largely unknown. The aim of this study was to narrow the gap in the literature by examining the extent to which there may be a relationship between college instructors' behaviors and student engagement. Although not traditionally regarded as frontline leaders, extant leadership literature affirmed college …

Strategies To Combat Tenant Fraud In The Rental Housing Market, Dr. Gwendolyn B. Dawson

Walden Dissertations and Doctoral Studies

Many business executives lack strategies to detect and eliminate tenant fraud in subsidized rental housing. The purpose of this multicase study was to explore strategies some business executives used to detect and eliminate tenant fraud in subsidized rental housing. The conceptual framework used to guide this study was the theory of planned behavior. Data were gathered using semistructured interviews with 6 purposively selected business executives of public housing authorities, supplemented with a review of policies and procedures that business executives used. Yin's 5-step analysis, which entails examining, categorizing, tabulating, creating a data display, and testing the data, guided the process …

A Grounded Theory Of Emergent Leadership In Nonhierarchical Virtual Teams, Randall Fleming

Walden Dissertations and Doctoral Studies

A Grounded Theory of Emergent Leadership in Nonhierarchical Virtual Teams

by

Randall David Fleming

MS, Colorado Technical University, 2008

BA, The Ohio State University, 1984

Dissertation Submitted in Partial Fulfillment

of the Requirements for the Degree of

Doctor of Philosophy

Management

Walden University

November 2018

Industrial Voluntary Consensus Standards – A Process Under Threat, Joel Blumenthal

Walden Dissertations and Doctoral Studies

The world relies heavily on industrial voluntary consensus standards to serve public interests through the development of uniform and harmonized social and economic procedures. The research problem focused on generating suggestions for improving collaborative practices between U.S.-based accredited and unaccredited standards development organizations that create voluntary consensus standards. The research centered on assessing the level of consensus among experts regarding what actions may be conducive to improving collaborative practices through the lenses of stakeholder and institutional theory. This modified 3-round qualitative Delphi study began with open-ended questions in Round 1 and progressed towards consensus in Rounds 2 and 3 using …

Testing Matching And Mirroring With Homophily In Onboarding Leadership Socialization, Manuel Almendarez

Walden Dissertations and Doctoral Studies

This study was designed to test the relationship between matching and mirroring (MM) and homophilous perceptions (PHM) in leadership socialization. Elevated PHM levels were hypothesized to affect workplace acceptance levels. The need for testing leadership socialization skills was magnified with the current demographic shift known as the leadership succession crisis, creating problems with onboarding strategies. The theoretical foundations of the study were based on the social identity theory, the social presence theory, the leader-member exchange theory, and the similarity-attraction paradigm. The study conducted at Workforce Solutions North Texas in Wichita Falls, Texas was sampled based on the calculated strength of …

Improving Workers' Safety And Health In The Zimbabwean Mining And Quarrying Industry, Bernard Mabika

Walden Dissertations and Doctoral Studies

Lack of effective occupational safety and health (OSH) strategies is a reason that

workplace accidents in the mining and quarrying industry remain high, making the

industry one of the riskiest operations worldwide. The purpose of this multiple case study

was to explore successful strategies mining and quarrying leaders in Zimbabwe used to

improve OSH. The key research question addressed successful strategies leaders in the

mining and quarrying industry use to improve employee occupational safety and health in

Zimbabwe. Six successful business leaders from 3 mining and quarrying mines in

Zimbabwe demonstrated an exception to unsafe practices, particularly through their

exceptional …

Strategies For Improving Energy Conservation On A Military Installation, Samuel Francis Richardson

Walden Dissertations and Doctoral Studies

Energy is an essential component required to execute missions throughout military organizations. Failing to sustain energy efficiency in military units could cause mission failures throughout the Department of Defense. As a result, efficient energy management has become a major priority for Air National Guard units as well as other military organizations around the globe. The purpose of this qualitative single case study was to gain an understanding of strategies used by front-line military supervisors to reduce energy consumption through behavioral change on a military installation located in Maryland. The central question explored strategies that front-line military supervisors use to change …

Strategic Working Capital Sourcing Strategies For The Survival Of Small Businesses, Gregory Smith

Walden Dissertations and Doctoral Studies

Fifty percent of small businesses fail before attaining their 5-year anniversary. The lack of sufficient working capital is one of the major reasons for small business failure. Pecking order theory was employed as the conceptual framework for this multiple case study to explore the working capital sourcing strategies of 6 purposely selected successful small business owners in the Southeast region of the United States used to sustain their businesses beyond 5 years. Data sources included semistructured interviews and company documents. Data analysis included thematic coding of the material using statistical software. The modified Van Kaam method was used to analyze …

Case Study Of Inclusive Environments For Lesbian, Gay, Bisexual, Transgender Employees, Darin Dale Stephens

Walden Dissertations and Doctoral Studies

Despite the positive changes occurring regarding American attitudes toward members of the Lesbian, Gay, Bisexual and Transgender (LGBT) community, empirical evidence indicates that LGBT individuals do not believe inclusive environments exist, as 48% of the population remains closeted at work. A gap exists in the literature relating to the formulation of practical solutions that establish and sustain inclusive environments. The purpose of this qualitative case study was to identify the possible influence of cultural lag on the workplace engagement of LGBT employees. Ogburn's cultural lag theory served as the conceptual framework. The following research questions guided the study: (a) The …

Strategies To Improve Business Performance With Information From Social Media, Taylor Chan

Walden Dissertations and Doctoral Studies

In the past 3 decades, China has experienced rapid economic growth. The China retail market reached renminbi (RMB) 29,651 billion in 2016, up by 10.4% from 2015. Using traditional ways that developed before the Internet era to acquire information regarding customers' changing preferences for products and services in a fast-moving business world is insufficient to support management in the retail industry to make informed strategic decisions. The purpose of this multiple case study was to explore successful customer-centric strategies that business leaders used to improve business performance with marketing information acquired from social media. The population comprised business leaders from …

Analytic Extensions To The Data Model For Management Analytics And Decision Support In The Big Data Environment, Nsikak Etim Akpakpan

Walden Dissertations and Doctoral Studies

From 2006 to 2016, an estimated average of 50% of big data analytics and decision support projects failed to deliver acceptable and actionable outputs to business users. The resulting management inefficiency came with high cost, and wasted investments estimated at $2.7 trillion in 2016 for companies in the United States. The purpose of this quantitative descriptive study was to examine the data model of a typical data analytics project in a big data environment for opportunities to improve the information created for management problem-solving. The research questions focused on finding artifacts within enterprise data to model key business scenarios for …

Leadership Development Strategies To Build Leaders Through Mentorship Programs, Devin Bradley

Walden Dissertations and Doctoral Studies

Developing employees to assume leadership positions has never been more critical for organizational leaders given the competitive climate and the shortage of executive leaders. Organizations must develop future leaders at unprecedented rates to assume roles and responsibilities of the current executive leaders who will leave the organization due to retirement and other forms of attrition. Using mentorship theory, the purpose of this multicase study was to explore strategies that business leaders use to successfully improve their mentoring programs for employee leadership development. The target population consisted of 3 business leaders located in central Florida with successful experience in improving their …

Strategies For Motivating Sales Employees' Performance Within Small Businesses In The United States, Wesley Chikwanda Chishimba

Walden Dissertations and Doctoral Studies

The loss of revenue, profits, brand, and corporate sustainability are possible for companies whose managers do not use strategies to motivate employee sales performance. The purpose of this multiple case study was to explore the strategies managers use to motivate sales employees' performance. A purposeful sample of 3 managers from U.S. companies with sales employees shared their strategies to motivate sales employees' performance. Methodological triangulation was used to review and analyze information from semistructured interviews, journal notes, member checking data, and review and analysis of relevant company documents. Additionally, coding indicated 4 main themes supporting the benefits of strategies to …

Hotel Manager Strategies To Reduce Voluntary Employee Turnover, Christl Arwen Kroeten

Walden Dissertations and Doctoral Studies

The voluntary turnover rate in the United States hotel industry is among the highest of all industries, resulting in lost revenue. The purpose of this multiple case study was to explore strategies hotel managers use to reduce voluntary employee turnover. The targeted population consisted of 6 managers from hotel businesses operating in the MidAtlantic region of the United States who successfully used strategies to reduce voluntary employee turnover. Job embeddedness theory, this study's theoretical framework, was used to describe reasons employees remained in organizations. Data were gathered via semistructured interviews, observational notes, and public business records regarding turnover or retention …

Copreneurs' Coping Strategies For Work-Family Conflict, Eunice Peregrino-Dartey

Walden Dissertations and Doctoral Studies

Family businesses including copreneurships have a high failure rate. Copreneurs experience work-family conflict (WFC), which can have a negative effect on business sustainability. The purpose of this qualitative multiple case study was to explore strategies that copreneurs used in managing WFC to achieve business sustainability for longer than 10 years. Three copreneurs from 3 copreneurial businesses located in the Greater Accra region of Ghana, who have employed effective strategies to cope with WFC to achieve business sustainability longer than 10 years, participated in the study. The WFC model for business/marriage partners (copreneurs) and the reciprocal coping model served as the …

Strategies For Successfully Managing Organizational It Projects, Joseph Rathbun

Walden Dissertations and Doctoral Studies

Over 70% of information technology (IT) projects in large organizations in the United States run over budget or fail to reach completion primarily due to a lack of effective strategies. The purpose of this single case study was to explore strategies that IT project managers used to successfully complete IT projects. Hersey and Blanchard's situational leadership theory was the conceptual framework. Purposive sampling method was used to identify 2 successful IT project managers in Central Texas. Data gathered from semistructed interviews and collected from publicly available documents were analyzed using coding techniques, constant comparison, and key word phrases. Member checking …