Operations and Supply Chain Management Commons^™

How Incidents Impact Congestion On Roadways: A Queuing Network Approach, Pedro Cesar Lopes Gerum, Melike Baykal-Gursoy

Supply Chain Management

Motivated by the need for transportation infrastructure and incident management planning, we study traffic density under non-recurrent congestion. This paper provides an analytical solution approximating the stationary distribution of traffic density in roadways where deterioration of service occurs unpredictably. The proposed solution generalizes a queuing model discussed in the literature to long segments that are not space-homogeneous. We compare single and tandem queuing approaches to segments of different lengths and verify whether each model is appropriate. A single-queue approach works sufficiently well in segments with similar traffic behavior across space. In contrast, a tandem-queue approach more appropriately describes the density …

Changing Care Paradigms: A Pilot Study On User-Interface And Design Implications On The Efficacy Of Medical Record Systems In Low-Resource Settings, Raveen S. Kariyawasam

Wharton Research Scholars

Electronic Medical Record Systems (EMRS) has quickly become the backbone of the healthcare delivery ecosystem in developed countries. Their reaches range from insurance to billing to physician charting. Despite the mainstream use of EMRS in developed countries, their implementation in low-resource settings has faced more barriers and challenges. During the development of EMRS, the concerns, hurdles, and considerations of developed nations are what were used as inspiration when designing these systems. This thesis explores the use of effective User Interface and User Experience (UI/UX) design to help lower the accessibility barriers associated with EMRS implementation and usage in low-resource settings. …

Zachary Shane's Portfolio, Zachary Shane

Honors College Portfolios

Description:

Being a part of the business program here at Duquesne University is more than just an accomplishment; it is the success I have received from high school to where I am today. Going into the junior year of my undergraduate program is where I intend to put all of these successes into place. I can finally dive into what I came to this school for, which was my ultimate major. As a supply chain and information technology double major, I can look into how our country is brought together and what pieces of technology are used to make that …

Social New Retailing Business Model And Its Applicable Regulatory Pattern, Rui Wang

Dissertations and Theses Collection (Open Access)

With the booming development of mobile Internet in China, social platforms have unlocked new channels for commodity supply chain and retailing and promoted business model innovation. Online social networking has fundamentally changed the way the entire society communicates. Social networking is no longer constrained by space, social platforms have become a stage for many ordinary people to showcase themselves, and the popularity of mobile payment has made mobile phones the wallets of Chinese residents as well. The innovative contents and interaction styles delivered by social software have triggered a qualitative change in the efficiency of everyone's communication and interaction, making …

Chapter 9: Building An Iron-Clad Supplier Diversity Program, Quinton L. Marks, Abeni El-Amin Ph.D.

Management Faculty Publications

There are critical issues identified with reconciling parity in supplier diversity initiatives. Supplier diversity programs (SDP) are an instrument utilized to facilitate the process. This endeavor analyzes the best techniques to develop diversity, equity, inclusion, and belonging (DEIB) strategy to develop manufacturing suppliers. Moreover, quality control frameworks for developing supplier diversity programs in manufacturing necessitates strategic planning, which is necessary to support supplier diversity initiatives. For instance, questions that supplier diversity managers must ask include, Does the company have an existing minority supplier program? If so, what are its pros, cons, and evaluative measures? If not, why hasn’t there been …

The Impact Of Verified (Unverified) Online Product Consumer Reviews On Consumer Product Attitudes, Kathryn Cort Dr., Roland Leak Dr.

Atlantic Marketing Journal

Customer product reviews are an integral component for companies conducting e-commerce, enabling them to stay connected and engaged with their consumers. However, more important these reviews are being utilized and incorporated into the marketing plans of companies. Companies can use a mixture of verified and unverified purchase badges in their displayed product reviews. This study finds that as customers are provided with this additional information to help form impressions about the products they are reviewing, customers' need for cognition ultimately determines how they utilize the presence or absence of these badges.

What's In A Name? Public Perceptions Of Multi-Level Marketing, Robert A. Peterson, Jeffrey A. Peterson

Atlantic Marketing Journal

This paper presents the results of a nationwide survey of the American public’s general familiarity with, and perceptions of, multi-level marketing, direct selling, and social selling. Survey respondents were most familiar with direct selling; there was no substantive difference in familiarity with multi-level marketing and social selling. Respondents familiar with the three terms possessed perceptions of them that were significantly more positive than were the perceptions of respondents reporting not being familiar with the terms. Across all terms, male respondents reported being more familiar with, and more positively disposed toward, them than did female respondents. Respondents 55 years of age …

Small And Micro Business Resources In The Post-Pandemic Period: A Perspective From Local Bridal Boutique Businesses In West Virginia, Ishtehar Sharif Swazan

Graduate Theses, Dissertations, and Problem Reports

In widely dispersed small communities, local and regional businesses dominate West Virginia, an eastern state of the United States in the Appalachian Mountains where small and micro businesses constitute 98.9% of all businesses and contributes 49.1% of the state’s total employment. These businesses create jobs, help build a strong financial position for the state, and promote community-building and social activities. These businesses are unique as they sustain themselves while competing with national and regional retail chains and carving out a customer for themselves. However, the damage caused by the spread of Covid-19 is having a devastating effect on the small …

Engaging Aspirations To Nurture Communities, Kentaro Toyama

Subsistence Marketplaces

For subsistence communities, the question is whether aspirations can be applied to motivate behavior that is, on the one hand consistent with people’s aspirations, but which might otherwise be difficult to elicit. Could poorer households be encouraged to save, to spend more on their children’s education, or to act against unhealthy social norms? A couple of examples suggest this is not only possible, but highly successful in contexts where other appeals fail.

Linking Online Business Education And Academic Excellence: Outbreak Of Covid-19 Pandemic, Muhammad Rafiq, Shumaila Naz, Saif Maqbool

Business Review

The outburst of COVID-19 epidemic has enforced the higher education sector to revamp customary mode of teaching and assessing students learning. This study is a portrayal of online education and intended to critically examine how online education during COVID-19 fostered a combination of favorable and unfavorable outcomes which might disrupt and redesign academic routine process. Data were collected from professors, associate professors and rectors affiliated with higher education system through focused group discussions and semi-structured interviews. The interpretivism paradigm analysis was performed to examine the data using qualitative methodology. This study delivers a comprehensive review of enduring online education mode …

Does Emotional Intelligence Impact Team Performance In Construction Projects? Exploring The Mediating Role Of Trust And Moderating Role Of Work Status, Ariba Abid, Aamer Hanif, Amna Khan

Business Review

Emotional intelligence (EI) is an essential part of the many types of intelligences an individual possesses. The outcome of interactions in personal life as well as within the organization depend upon how high or low the Emotional Quotient (EQ) is. Organizations, nowadays, specifically design tests for hiring people with higher EQ since the emotional intelligence of a team member leaves an impact on its performance. The major goal of this research is to investigate the relationship between emotional intelligence and team performance, as well as the impact of employee work status on these two. The research also examines the mediating …

Exact Algorithms For Practical Instances Of The Railcar Loading Problem At Marine Container Terminals, Manwo Ng, Dung-Ying Lin

Information Technology & Decision Sciences Faculty Publications

With the growth in global trade and its environmental footprint, sustainable modes of freight movement are increasingly important in today’s globalized world. This study focuses on on-dock rail, where the rail terminal is located within the marine container terminal. On-dock rail has in recent years become an essential mode of transportation to move containers out of congested marine container terminals. This study contributes to the literature by presenting tailored exact solution algorithms for a recently proposed optimization model to optimize the loading of double-stack trains. In particular, a 3-stage solution framework is presented for the case when rail cars have …

On The Feasibility Of Speed Limits In Ocean Container Shipping, Manwo Ng

Information Technology & Decision Sciences Faculty Publications

The maritime industry is witnessing an increasingly loud call to contribute to the global trend towards environmental sustainability and decarbonization. One possible policy measure is the use of speed limits to reduce harmful emissions from ocean shipping. While the idea of slowing down ships to obey speed limits might seem intuitive, one key distinguishing characteristic of container shipping is that it is designed to adhere to a fixed, typically weekly, sailing schedule. This paper contributes to the literature investigating the feasibility of speed limits by demonstrating that speed limits are not always feasible in container shipping because of the rigid …

Containing Compounding Container Congestion, Curtis Salinger

CMC Senior Theses

The Covid-19 pandemic caused major disruptions throughout the container shipping supply chain. Professor Dongping Song of Liverpool University wrote a paper discussing the logistical vulnerabilities in the supply chain, including the issue of congestion in ports. This paper examines the Port of Los Angeles from 2018-2021 as it relates to Song’s paper to see how its operations were impacted during the Covid-19 timeframe. It is found that labor shortages, chassis shortages, and change in trade behavior each contributed to the congestion. Unfortunately, the implemented policies were insufficient to bolster the port against sustained challenges and congestion continues to worsen.

Schedule Reliability In Liner Shipping Timetable Design: A Convex Programming Approach, Abraham Zhang, Zhichao Zheng, Chung-Piaw Teo

Research Collection Lee Kong Chian School Of Business

Container liner shipping is the primary mode of moving manufactured products across continents. Partly due to inherent uncertainties at sea and ports, the liner shipping industry has long had a notorious reputation of schedule delays and unreliable on-time performance. This paper formulates a new approach to incorporate schedule reliability targets in liner shipping timetable design, to balance bunker consumption, time taken for the voyage, and schedule delays. We first model a surrogate problem using a copositive program through a moment decomposition approach and solve it as a convex semidefinite programming relaxation. We next incorporate schedule reliability targets implicitly by exploiting …

Joint Chance-Constrained Staffing Optimization In Multi-Skill Call Centers, Tien Thanh Dam, Thuy Anh Ta, Tien Mai

Research Collection School Of Computing and Information Systems

This paper concerns the staffing optimization problem in multi-skill call centers. The objective is to find a minimal cost staffing solution while meeting a target level for the quality of service (QoS) to customers. We consider a staffing problem in which joint chance constraints are imposed on the QoS of the day. Our joint chance-constrained formulation is more rational capturing the correlation between different call types, as compared to separate chance-constrained versions considered in previous studies. We show that, in general, the probability functions in the joint-chance constraints display S-shaped curves, and the optimal solutions should belong to the concave …

The Moderating Effect Of Solar Radiation On The Association Between Human Mobility And Covid-19 Infection In Europe, Wenyu Zhao, Yongjian Zhu, Jingui Xie, Zhichao Zheng, Haidong Luo, Oon Cheong Ooi

Research Collection Lee Kong Chian School Of Business

The novel coronavirus disease 2019 (COVID-19) has caused a global pandemic. Some studies have suggested a negative association between sunlight intensity and COVID-19 infection, alluding to the belief that it might be safe to go out on sunny days. This paper examined whether solar radiation mitigated the association between human mobility and COVID-19 infection in Europe using a dynamic panel data model to investigate the effect of human mobility, solar radiation, and their interaction on COVID-19 infection. The results revealed that outgoing mobility was positively correlated and solar radiation was negatively correlated with COVID-19 infection at lag levels of 1, …

Crisis Response In The Global Supply Chain Of The Fashion Industry, Caitlyn Arce

CMC Senior Theses

The fast fashion industry has developed a supply chain that optimizes profits by manufacturing garments from developing countries at extremely low costs. With consumer preferences pressuring brands to produce new cheap trends and products at rapid speed, the brunt of the costs is placed in countries where managers, suppliers, and governments turn a blind eye for the sake of economic stability and development. In moments of crisis, key players have chosen to respond in ways that reflect their priorities and incentives. Brands have reflected in their decision-making the influence of consumer demand and sensitivity to media through the risk of …

How A Supply Chain Stumble Changes A Company’S Policies And Progress 20 Years Later: A Case Study Of Gap Inc., Alexandra Futterman

CMC Senior Theses

Gap Inc. is the third-largest American retailer. Founded in 1969, Gap Inc. holds four brands, Gap, Banana Republic, Old Navy and Athleta. In the late 1990s and early 2000s Gap Inc. made headlines for child labor abuses along with many other large brands. After this negative attention, Gap Inc. began developing policies and practices to combat ethical supply chain issues. These policies included a Human Rights Policy, a Code of Vendor Conduct, working conditions standards, and even capacity building programs that boarded company reaches into communities they touch. In conjunction with the policies Gap Inc. has published several social responsibility …

Examining The Experiences Of Small, Independent Grocers During The Covid-19 Pandemic, Jamie Picardy, Lisa Luken, Iris Michaud, Martha Lefebvre

Maine Policy Review

The COVID-19 pandemic has exposed existing vulnerabilities across various sectors of the economy and society. Disruptions to the food chain have been common during the pandemic, resulting in empty shelves at grocery stores and modifications to consumer culture. Within this study, we examined resilience (characterized by flexibility, diversity, redundancy, adaptability, innovation, self-reliance and infrastructure) of small, independent grocery stores in Maine.