Business Commons^™

Two Studies On The Use Of Information Technology In Collaborative Planning, Forecasting & Replenishment (Cpfr), David Mccaw Simmonds

Information Technology & Decision Sciences Theses & Dissertations

In the 1st study, I seek to determine whether there are trends in the coverage of the use of Information Technology in CPFR in support of Supply Chain Management. I look at the way technology is studied along two dimensions. The first dimension is the function within CPFR—Planning, Forecasting or Replenishment. The second dimension is level at which the study addresses use of the technology, whether at the Operational, Tactical or Strategic level. Within this 3x3 matrix, I seek to prove that studies would primarily fall along a line where the higher the level functions should be served by systems …

Patrol Scheduling In An Urban Rail Network, Hoong Chuin Lau, Zhi Yuan, Aldy Gunawan

Research Collection School Of Computing and Information Systems

This paper presents the problem of scheduling security teams to patrol a mass rapid transit rail network of a large urban city. The main objective of patrol scheduling is to deploy security teams to stations of the network at varying time periods subject to rostering as well as security-related constraints. We present several mathematical programming models for different variants of this problem. To generate randomized schedules on a regular basis, we propose injecting randomness by varying the start time and break time for each team as well as varying the visit frequency and visit time for each station according to …

Ad Revenue Optimization In Live Broadcasting, Dana G. Popescu, Pascale Crama

Research Collection Lee Kong Chian School Of Business

In live broadcasting, the break lengths available for commercials are not always fixed and known in advance (e.g., strategic and injury time-outs are of variable duration in live sports transmissions). Broadcasters actively manage their advertising revenue by jointly optimizing sales and scheduling policies. We characterize the optimal dynamic schedule in a simplified setting that incorporates stochastic break durations and advertisement lengths of 15 and 30 seconds. The optimal policy is a "greedy" look-ahead rule that accounts for the remaining number of breaks; in this setting, there is no value to perfect information at the scheduling stage, and hence knowing the …

Can S'Pore Be An Icon For Service Productivity?, Arnoud De Meyer

Research Collection Lee Kong Chian School Of Business

The traditional analysis tools or flexible work design deployed in manufacturing may be insufficient in giving a boost to services. For all practical purposes, there are only two ways to create more value per worker and stimulate growth, we need innovation or become more productive.

A Framework For Evaluating Energy Sustainability Efforts In Maritime Terminal Operations, Kar Way Tan, Members Of Green Transformation Lab

Research Collection School Of Computing and Information Systems

Environmental sustainability at ports has been getting more attention from port operators and port regulators. GHG emissions associated with operations and search for clean energy sources are some issues that are continuously monitored and urgently addressed at leading ports across the world. Singapore port, one of the busiest in the world, is no exception. In the planning for the Singapore’s next generation port, this study helps to provide a framework to learn, evaluate and monitor sustainability initiatives in maritime terminal operations for Singapore and selected international ports.

Multi-Level Analytic Network Process Model To Mitigate Supply Chain Disruptions In Disaster Recovery Planning, Martina Ursula Kroener

Master's Theses

Over the past few decades, environmental changes have led to more frequent occurrences and greater intensities of natural disasters worldwide. In terms of globally connected supply chains, this has resulted in an enormous economical loss for corporations. Therefore, Business Continuity and Disaster Recovery (BC/DR) planning and management has become essential for businesses in order to protect their critical business flow. Yet there is a lack of systematic and transparent methodologies for companies to handle this problem.

Hence, this thesis introduces a novel approach to combine consecutive steps of the Disaster Recovery Planning (DRP) process within one application. The multi-criteria decision-making …

Simulation Modeling And Analysis Of Air Force Depot Engine Repair During Normal And Increased Operational Tempos, Changsung Kim

Theses and Dissertations

Maintaining an adequate level of aircraft availability through Agile Combat Support (ACS) is crucial for the Air Force to perform its mission. During normal day to day operations, demands for depot repair including spare parts and maintenance man-hours typically fall within a range supportable with current assets and capabilities. However, with increased flying operations during a conflict, demand at the depot level may likely exceed current capacity for timely support, resulting in backorders for spares and increased turnaround times. This thesis develops a discrete event simulation of the F-16 engine repair network to investigate the impact on engine availability (a …

An Evaluation Of Forecasting Methods That Could Be Used In The Brazilian Air Force Uniform Distribution Process, Leandro Valviesse De Oliveira

Theses and Dissertations

Every year the Brazilian Air Force (BAF) spends the equivalent of approximately 15 million dollars for uniforms. These purchases come from a tight budget, are executed through public procurement processes, and are tied to Brazilian acquisition regulations, which are often very strict. For this reason, lead times are unpredictable. It can take anywhere from one month to a year to replenish an item. The purpose of this research is to analyze the forecasting process performed at a BAF military organization named Sub-directorate of Supply (SDS) with the intent of building an algorithm comprised of a selection of forecasting models in …

Consolidating Supply Chain Management Education Through Professional Certification, Christopher L. Clawson

Theses and Dissertations

The Air Force and Department of Defense can benefit from professional certification in supply chain management. Research addressed the benefits and impact certification can have on individuals and an organization. Without a defined and concise education plan for supply chain management, certification remains a viable option. Interviews with defense industry partners highlighted key aspects of successful SCM development and education programs.

Determining The Degree Of The Routinization Of Additive Manufacturing In The Air Logistics Complexes, Candis A. Woods

Theses and Dissertations

Fiscal constraints have affected the USAF’s spending and sustainment of weapons systems that are being utilized beyond their programmed life cycle; therefore, it is imperative that processes be given the critical eye for improvement, innovative approaches, and/or best practice implementation. The AFSC, part of the AFMC, has embarked on a groundbreaking effort to transform operations and leverage industry best practices, while maintaining focus on warfighter support to create “The AFSC Way.” The AFSC Way is based on a shared leadership model that emphasizes speed, safety, and quality, which gives way to innovative ideas and new technologies in order to achieve …

Isscm Newsletter, Volume 11, March 23, 2016, Raj Soin College Of Business, Wright State University

ISSCM Newsletters

A ten page newsletter from the Department of Information Systems and Supply Chain Management in the Raj Soin College of Business at Wright State University.

Electricity Trading And Negative Prices: Storage Vs. Disposal, Yangfang (Helen) Zhou, Alan Scheller-Wolf, Nicola Secomandi, Stephen Smith

Research Collection Lee Kong Chian School Of Business

Electricity cannot yet be stored on a large scale, but technological advances leading to cheaper and more efficient industrial batteries make grid-level storage of electricity surpluses a natural choice. Because electricity prices can be negative, it is unclear how the presence of negative prices might affect the storage policy structure known to be optimal when prices are only non-negative, or even how important it is to consider negative prices when managing an industrial battery. For fast storage (a storage facility that can both be fully emptied and filled up in one decision period), we show analytically that negative prices can …

Improving The Maritime Transshipment Operations At The Noble Group, Fragkos I., Bert De Reyck

Research Collection Lee Kong Chian School Of Business

The Noble Group is a market-leading global supply chain manager of agricultural products, metals, and minerals, operating in more than 140 locations. This paper focuses on Noble’s maritime operations in Indonesia, where coal is transported from mines to ocean-bound vessels via roads and rivers. Currently, transportation delays are causing Noble to lose tens of millions of dollars per year in demurrage and detention penalties. Although the company can hire additional resources (such as barges and floating cranes) in advance to minimize the impact of delays, the economic benefit of doing so is often unclear. To reduce or eliminate these delays, …

Made In Singapore, Plugged Into The World, Arnoud Cyriel Leo De Meyer

Research Collection Lee Kong Chian School Of Business

Manufacturing in Singapore is not an outmoded sector. Instead, it is a job multiplier and can be a source of innovation as well as a vital way to plug the Republic into the global manufacturing network.

Scenario-Based Simulation Game For Hospital Beds Capacity Planning In Singapore, Cheong, Michelle L. F., Li Siong Lim

Research Collection School Of Computing and Information Systems

A complete learning object with scenario-based simulation game and accompanying materials, which allows self-directed learners to learn and apply the theory, concepts and calculations for capacity planning, in the hospital beds capacity planning scenario in Singapore, was designed, developed and immplemented. It guides the learners through the key considerations for capacity planning, the computation of actual capacity needed, deciding the time for capacity increments, as well as the economies and diseconomies of scale when adding capacity. All the learnings are applied in a scenario where the learners make decision on how much and when to add hospital beds to existing …

Isscm Newsletter, Volume 10, February 15, 2016, Raj Soin College Of Business, Wright State University

ISSCM Newsletters

A ten page newsletter from the Department of Information Systems and Supply Chain Management in the Raj Soin College of Business at Wright State University.

Tls Newsletter. February 2016, Unf Transportation And Logistics Society

Transportation & Logistics Society Newsletter

Inside the Newsletter: Mark Your Calendars for T & L Career Day on March 25. President's Corner. Get to Know Emily Millspaw, Newsletter Editor. T & L Flagship Tour to Total Quality Logistics. What's Happening in the Industry. Life after Graduation with Valerie Seaman

Cost-Reducing Innovation And The Role Of Patent Intermediaries In Increasing Market Efficiency, Anupam Agrawal, Shantanu Bhattacharya, Sameer Hasija

Research Collection Lee Kong Chian School Of Business

Patent intermediaries have gained importance as non-practicing entities in the innovation domain, buying innovations from an external provider and then licensing them to practicing firms. In this study, we analyze the competition between two identical incumbent firms and a patent intermediary for the acquisition and licensing of a cost-reducing innovation developed by an external innovator. We show that the outcome of the IP acquisition and licensing game critically depends on the degree of the cost-reducing innovation. Patent intermediaries win IP rights in patent markets if the innovation is incremental. They also win the IP rights when the innovation is moderate …

A Proactive Sampling Approach To Project Scheduling Under Uncertainty, Pradeep Varakantham, Na Fu, Hoong Chuin Lau

Research Collection School Of Computing and Information Systems

Uncertainty in activity durations is a key characteristic of many real world scheduling problems in manufacturing, logistics and project management. RCPSP/max with durational uncertainty is a general model that can be used to represent durational uncertainty in a wide variety of scheduling problems where there exist resource constraints. However, computing schedules or execution strategies for RCPSP/max with durational uncertainty is NP-hard and hence we focus on providing approximation methods in this paper. We pro- vide a principled approximation approach based on Sample Average Approximation (SAA) to compute proactive schedules for RCPSP/max with durational uncertainty. We further contribute an extension to …

Achieving Stable And Fair Profit Allocation With Minimum Subsidy In Collaborative Logistics, Lucas Agussurja, Hoong Chuin Lau, Shih-Fen Cheng

Research Collection School Of Computing and Information Systems

With the advent of e-commerce, logistics providers are faced with the challenge of handling fluctuating and sparsely distributed demand, which raises their operational costs significantly. As a result, horizontal cooperation are gaining momentum around the world. One of the major impediments, however, is the lack of stable and fair profit sharing mechanism. In this paper, we address this problem using the framework of computational cooperative games. We first present cooperative vehicle routing game as a model for collaborative logistics operations. Using the axioms of Shapley value as the conditions for fairness, we show that a stable, fair and budget balanced …

Isscm Scholarship And Awards 2016, Raj Soin College Of Business, Wright State University

ISSCM Awards & Scholarships

Scholarships and Awards presented in the ISSCM Department. This document includes photos of recipients receiving awards.

Organic Or Contract Support? Investigating Cost And Performance In Aircraft Sustainment, Jonathan D. Ritschel, Tamiko L. Ritschel

Journal of Transportation Management

Over the past 15 years, the United States Air Force (USAF) has shifted toward utilizing more Contracted Logistics Support (CLS) and away from organic maintenance in their aircraft fleets. Given operating and support costs comprise 53-65% of total life-cycle costs for USAF aircraft, understanding the implications of these sustainment decisions is imperative. Utilizing a maintenance cost per flying hour metric and performing regression analysis, we find the maintenance strategy decision (CLS, mixed, or organic) is the most significant driver. We then examine performance metrics in relation to two established aircraft availability targets. Analysis of variance reveals statistically significant differences between …

Parcel Shipping: Understanding The Needs Of Business Shippers, Michael S. Garver, Zachary Williams, Sean P. Goffnett, Brian J. Gibson

Journal of Transportation Management

Research on carrier selection addresses how shippers choose carriers. To date, this extensive research stream has not adequately addressed a known and significant shipping segment: business parcel shippers. In this research, input from 374 business parcel shippers was captured and analyzed using Maximum Difference Scaling. The respondents were asked to evaluate the importance of 17 carrier selection variables in regard to choosing a parcel carrier. The overall results indicate that delivery promises, transit times, rates, pick-up promises, and tracking are the most important attributes when a parcel shipper makes a carrier selection. In addition, the results of attribute importance were …

The Stewardship Of Trust In The Global Value Chain, Kishanthi Parella

Scholarly Articles

Global governance has not yet caught up with the globalization of business. As a result, our headlines provide daily accounts of the extent and consequences of these "governance gaps." The ability of corporations to evade state control also contributes to an unusual, even frightening, phenomenon: corporations are governing like states. Some governance functions traditionally delivered by state actors are now increasingly undertaken by transnational corporations. One area that is experiencing this substitution is dispute resolution of human rights. Corporations and other business enterprises, individually or collectively, are creating a variety of grievance mechanisms to address human rights and other conflicts …

Turning To Case Studies As A Mechanism For Learning In Action Learning, Denise O'Leary, Paul Coughlan, Clare Rigg, David Coghlan

Articles

Case studies are a useful means of capturing and sharing experiential knowledge by allowing researchers to explore the social, organisational and political contexts of a specific case. Although accounts of action learning are often reported using a case study approach, it is not common to see individual case studies being used as a learning practice within action learning sets. Drawing on a network action learning (NAL) project, this paper explores how the process of coaching, articulating, authoring, sharing and editing case studies provided a vehicle for learning and research within a NAL set. The intended contribution of this paper to …

The Leadership Process During An Organizational Crisis, Rodrigo Antônio Silveira Dos Santos, Rodrigo Bandeira De Mello, Cristiano José Castro De Almeida Cunha

Strategy and Operations Faculty Publications

This article reports results of a qualitative study that examined the leadership process during an organizational crisis in the Brazilian electrical sector. The studied organization is a company involved with the generation and distribution of electric energy, which faced a crisis because of the rupture of electricity-distribution cables that affected the energy supply chain for a whole city, during approximately 52 hours. In this context, the authors analyzed the crisis’ stages and the organizational crisis management phases, in order to identify the leadership tasks adopted by organizational leaders during the crisis response. The major challenges brought with the crisis were …

Planning Strategies For Home Health Care Delivery, Mike Hewitt, Maciek Nowak, Nisha Nataraj

Information Systems and Operations Management: Faculty Publications & Other Works

In home health care, continuity of care, wherein a patient is always visited by the same nurse, can be just as important as cost, as it is closely correlated to quality of care. While a patient typically receives care for two to three months, such that assigning a nurse to a patient impacts operations for lengthy periods of time, previous research focusing on continuity of care uses planning horizons that are often a week or shorter. This paper computationally demonstrates that considering a long planning horizon in this setting has significant potential for savings. Initially, a deterministic setting is considered, …

لتحليل الاقتصادي للنفقات الاستثمارية والتشغيلية لمحافظة ذي قار للمدة ( 2006 – 2014 ), علي كاظم هلال

Muthanna Journal of Administrative and Economics Sciences

المستخلص : تعد هذه الدراسة كاشفة لطبيعة وحجم الانفاق الاستثماري والتشغيلي لديوان محافظة ذي قار ومجلس المحافظة للمدة ( 2014 – 2006 ) . اذ كشفت الدراسة وجود هدراً كبيراً في النفقات الاستثمارية دون تحقيق انجاز حقيقي على أرض الواقع ، اذ بلغت النفقات الاستثمارية للمدة المذكورة ( 2.050.005 ) ترليون دينار ، وهذا المبلغ لو انفق على مشاريع حقيقية ومدروسة يمكن ان ينقل المحافظة من حالة التخلف الى حالة النمو والتقدم . وبينت الدراسة حجم الهدر الكبير في الموارد المالية والتبذير والفساد على مشاريع غير أساسية وقصيرة الاجل وكثيرة العدد بدلاً من التركيز على المشاريع الاستراتيجية كبناء المدارس ومحطات …

دور جودة التدقيق الخارجي في زيادة فاعلية عملية الفحص الضريبي, فرقد فيصل جدعان

Muthanna Journal of Administrative and Economics Sciences

تعد دراسة الفحص الضريبي ذات أهمية بالغة لغرض ترصين العمل الضريبي وإقامته على أسس علمية وفنية دقيقة وتحقيق العدالة الضريبية، والفحص الضريبي هو دراسة وتحليل وتقييم التقارير المالية وحسابات الشركة بهدف التأكد من صحة صافي الربح. ولزيادة كفاءة عملية الفحص الضريبي وتحقيق العدالة الضريبية وإضفاء الثقة والمصداقية في التقارير المالية يتطلب ان تتم عملية التدقيق الخارجي بجودة عالية لذلك يهدف هذا البحث الى:- 1- التعرف على مفهوم واهداف وانواع الفحص الضريبي والعوامل المؤثرة في فاعليته. 2- تسليط الضوء على مفهوم واهمية جودة التدقيق الخارجي والعوامل المؤثرة عليه.3- بيان دور جودة التدقيق الخارجي في زيادة فاعلية عملية الفحص الضريبي وأختتم البحث …

Supply Chain Organizational Infrastructure For Promoting Entrepreneurial Emphasis And Innovativeness: The Role Of Trust And Learning., Divesh Ojha, Jeff Shockley, Chandan Acharya

Publications and Research

Research has argued that inter-organizational trust and learning are critical factors associated with successful supply chain innovation and long-term competitiveness. In this paper, we develop and test a proposed model of supply chain organizational design using survey data collected from 128 decision-makers across diverse sample of supply chain decision-makers across many industries. Our analysis provides evidence that both trust and supply chain learning play important, but distinctive roles in developing an entrepreneurial and innovative supply chains. Moreover, our research findings add critical insight into existing resource-based perspectives of supply chain innovation by illuminating the roles and progression of the different …