Operations and Supply Chain Management Commons^™

Not All Tons Are Created Equal; Analyzing Aerial Port Capability To Define The Working Ton, Casey L. Owens

Theses and Dissertations

United States Transportation Command (TRANSCOM) along with Air Mobility Command (AMC) provide airlift assets that accomplish thousands of missions around the world every week for cargo distribution. The current unit of measure is a short ton, which is the primary metric used in decision making. However, the short ton measurement does not adequately predict the amount of work necessary to properly prepare different cargo types for airlift. Utilizing the short ton metric leads to inadequate forecasting times for cargo preparation and aircraft loading, which leads to delayed missions. The root of the problem is that the metric used does not …

Managing Supply Discrepancies: The Effect Of Performance Measurement And Feedback On Order Fulfillment Quality, Michael J. Weber

Theses and Dissertations

Extensive research on the impact of shipping and packaging errors in the private sector finds numerous negative outcomes, including reduced customer satisfaction, reduced customer loyalty, and lower profitability. However, little research has been done examining the impact of order fulfillment errors on military operations. The purpose of this research is to quantify the impact of supply discrepancy reports (SDRs) on military aircraft readiness metrics, including cannibalizations, not mission capable supply (NMCS) hours, aircraft availability and MICAP hours. Results show SDRs significantly impact aircraft readiness metrics in seven of the fifteen analyses conducted. Additionally, a quasi-experimental study is implemented at DLA …

Resilient Aircraft Maintenance Constructs: Enhancing Repair Network Designs To Effectively Manage Risks And Supply Chain Interruptions, Thomas S. Bihansky

Theses and Dissertations

This research aims to extend the understanding of supply chain resiliency by utilizing a simulation model of a U.S. Air Force aircraft engine repair network to evaluate the degree of resiliency built into the system. The study compares the recovery time of the disrupted current system to that of a fully-integrated repair network; the objective being the quantification of resiliency in the current networks design and gauging the effectiveness of various strategies in reducing recovery time. This contributes to current literature by bridging the explicit gap on how to quantify, measure, and compare resilient supply chain strategies and also provides …

Flightline Heroics And The Façade Of A Healthy Common Support Equipment Fleet, Benjamin D. Bobic

Theses and Dissertations

Access to serviceable support equipment enables aircraft maintenance crews the ability to efficiently keep assigned aircraft safe and mission capable. Current Air Force policy does not require formal management and enterprise fleet health reporting of serialized support equipment. As such, articulating funding requirements to replace equipment has been a challenge for equipment managers. To better articulate support equipment requirements, equipment managers need quantifiable support equipment data. A previous study examined the relationship between aircraft availability and support equipment availability. While finding no significant correlation, the author identifies the practices of "Frankensteining" and "Beg-Borrow-Steal" as possible reasons for the absence of …

C-130j Inventory Control Point Location Determination, Joshua P. Casey

Theses and Dissertations

Since the first C-130J delivery in 1999, Lockheed Martin has managed the USAF’s C-130J “peculiar” parts inventory at Keesler AFB. Now with 193 aircraft assigned to 17 operating locations across the globe, effective supply chain management and recognized cost savings are essential components to mission success and fleet longevity. Previous research within the area of location analysis has shown that minimizing the average weighted distance of shipping products can assist in cost reduction efforts. Due to this, the goal of this study is to determine if alternative CONUS C-130J locations can be utilized as the Inventory Control Point to help …

Critical Issues In The Air Force Medical Equipment Procurement Process, Samuel H. Pang

Theses and Dissertations

The Air Force medical logistics community relies on multiple contracting offices to acquire medical equipment for the Air Force Medical Service. The perception is that burdensome regulations contribute to the challenges faced in the procurement process. This research takes a broader examination to understand the factors leading to long lead times and delayed procurements. Process mapping and interviews with the key stakeholders supporting medical equipment procurement determined that the critical issues were a lack of centralized medical equipment contracting authority, insufficient market research and inconsistent local knowledge on contracting processes. This research provides future recommendations for the Air Force Medical …

Efficiency Driver In Nigerian Airports: A Bootstrap Dea–Censored Quantile Regression Approach, Obioma Reuben Nwaogbe, Peter Wanke, Innocent Chukwuka Ogwude, Carlos Pestana Barros, Abul Kalam Azad

Journal of Aviation Technology and Engineering

This paper reports on the use of a novel two-stage approach for assessing the efficiency of 30 major Nigerian airports from 2003 to 2013 based on bootstrapped data envelopment analysis (DEA) and censored quantile regression. In the first stage, bootstrapped efficiency estimates are computed. They enable bias correction and testing for significant differences in efficiency levels among airports. Subsequently, bootstrapped DEA results are combined with censored quantile regression to assess the impact of contextual variables—related to the airports’ ownership, location, and network connectivity—on different efficiency percentiles. The results reveal that the intensity of significant impacts regarding airports’ contextual variables may …

Commercial Space Transportation: A Simulation And Analysis Of Operations Impacts On The United States National Airspace System And Airline Stakeholders, Janet K. Tinoco, Rodrigo Firmo, Chunyan Yu, Mohammad Moallemi, Carlos Castro, Todd Waller

Publications

Agenda:

• Background on space launch activity
• Research problem and objective
• Methodology
• Results
• Implications
• Future research

Isscm Newsletter, Vol. 24, March 16, 2018, Raj Soin College Of Business, Wright State University

ISSCM Newsletters

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

Global Supply Chains Depend On People, Michael Gravier

Marketing Department Faculty Journal Articles

Any threat to use tariffs as an economic weapon will have limited effect because we don’t hold the same power we used to.

Constrained Dual Representation Of Coherent Risk Measures, Marcus Ang, Jie Sun, Qiang Yao

Research Collection Lee Kong Chian School Of Business

A classical result in risk measure theory states that every coherent risk measure has a dual representation as the supremum of certain expected value over a risk envelope. We study this topic in more detail. The related issues include: (1) Set operations of risk envelopes and how they change the risk measures, (2) The structure of risk envelopes of popular risk measures, (3) Aversity of risk measures and its impact to risk envelopes, and (4) A connection between risk measures in stochastic optimization and uncertainty sets in robust optimization.

Quadratic Two-Stage Stochastic Optimization With Coherent Measures Of Risk, Jie Sun, Li-Zhi Liao, Brian Rodrigues

Research Collection Lee Kong Chian School Of Business

A new scheme to cope with two-stage stochastic optimization problems uses a risk measure as the objective function of the recourse action, where the risk measure is defined as the worst-case expected values over a set of constrained distributions. This paper develops an approach to deal with the case where both the first and second stage objective functions are convex linear-quadratic. It is shown that under a standard set of regularity assumptions, this two-stage quadratic stochastic optimization problem with measures of risk is equivalent to a conic optimization problem that can be solved in polynomial time.

Infrastructure Fix Requires Innovating Our Regulatory Approach, Michael Gravier

Marketing Department Faculty Journal Articles

The real problem with infrastructure is the management process – or lack thereof.

Isscm Newsletter, Vol. 23, January 31, 2018, Raj Soin College Of Business, Wright State University

ISSCM Newsletters

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

Strategic Excellence In Post-Digital Ecosystems: A B2c Perspective, Edin Güçlü Sözer, Mustafa Emre Civelek, Murat Çemberci

Zea E-Books Collection

The basic production of the digital economy is knowledge. As it becomes more important, traditional factors like labor and capital become less so. As technological innovation changes the nature of employment, the conversion of labor to consumption becomes increasingly difficult. E-commerce is the most important driving force of the digital economy. Using technology and information networks effectively allows brands or companies to effect rapid changes in competitive markets. The emergence of neo-consumers calls for a higher order of information exchange and interaction. Companies must reasses their complete business processes in a holistic way to ensure market prominence in an economy …

The Emerging International Taxation Problems, James G. Yang, Victor N.A. Metallo

Department of Accounting and Finance Faculty Scholarship and Creative Works

The problems of tax evasion and tax avoidance are as old as taxes themselves. Between 2015 and 2016 alone, many U.S. multinational corporations were involved in tax disputes with the European Commission. From a historical perspective, these disputes are unprecedented as they have resulted in tremendous amount of tax penalties. The most notable case was Apple for €13 billion of unpaid tax. This article discusses what tax strategies these corporations used that caused such disputes. It specifically investigates seven corporations: Apple Inc., McDonald’s, Starbucks, Fiat, Amazon, Google, and Ikea, and elaborates on the following tax strategies: high royalties, intercompany transfer …

Orchids Paper Company 2014-2015, John K. Masters, Pamela P. Rogers

Faculty Publications

This case captures Orchids Paper Company at a time of significant change internally and in its environment. It presents opportunities to examine the concept of fit between Strategy, Environment, and Resources to maximize profit potential. The nature of Orchids’ products and industry facilitate the case’s accessibility, since Orchids operates in an industry which is fairly simple to understand (paper manufacturing). The case is intended for use in business policy and strategy classes at the undergraduate or MBA level, but might be used in operations, supply chain, finance, accounting or marketing classes by focusing on specific questions facing the firm.

Container Shipping In The Great Lakes: Current Situation And Future Potential, John Floyd, James L. Roach, John C. Taylor

Journal of Transportation Management

Containerization has had an outsized impact on the growth of global trade over the past 60 years. The Great Lakes-St. Lawrence Seaway is an important bi-national waterway. Since the advent of containerization in the 1950’s there has been much excitement about the prospects of scheduled container shipping in the Great Lakes. There is a perception that direct container service will add value to the economy of the Great Lakes- St. Lawrence Basin (GLSLB). However, due to unique shipping constraints in the Great Lakes-St. Lawrence Seaway, significant container service has not materialized. This research seeks to explain the current state of …

The Quest For Carbon-Neutral Industrial Operations: Renewable Power Purchase Versus Distributed Generation, Tongdan Jin, Tianqin Shi, Taeho Park

Faculty Publications

Integrating renewable energy into the manufacturing facility is the ultimate key to realising carbon-neutral operations. Although many firms have taken various initiatives to reduce the carbon footprint of their facilities, there are few quantitative studies focused on cost analysis and supply reliability of integrating intermittent wind and solar power. This paper aims to fill this gap by addressing the following question: shall we adopt power purchase agreement (PPA) or onsite renewable generation to realise the eco-economic benefits? We tackle this complex decision-making problem by considering two regulatory options: government carbon incentives and utility pricing policy. A stochastic programming model is …

Trends In Manufacturing Inventory Efficiency: 1980-2013, Ahren Johnston

Atlantic Marketing Journal

This study was motivated by Cooke’s 2013 article questioning the inclusion on inventory carrying costs in CSCMP’s Annual State of Logistics Report since it is based on interest rates. This paper explores that question more fully and goes on to look at trends in inventory efficiency based on inventory turnover for U.S. manufacturing firms. Results of the study reveal that there has been a level trend between 1980 and 2013 after firm size is controlled for. Since these results are contradictory to those obtained by looking at inventory carrying costs as a percent of GDP, they suggest the need for …