Operations Research, Systems Engineering and Industrial Engineering Commons^™

Early Detection And Control Of Potential Pandemics., Shengpeng Jin

Electronic Theses and Dissertations

Over the centuries, human beings have been inflicted with a variety of contagious diseases, resulting in tens of millions of respiratory illnesses and deaths worldwide. Early detection of disease spread facilitates timely responses that can greatly reduce its impact on a population. Therefore, this early information is a major public health objective and is crucial for policy makers and public health officials responsible for protecting the public from the spread of contagious diseases. Current indicators of the spread of contagious outbreaks lag behind its actual spread, leaving no time for a planned response. The studies of Christakis et al. in …

After Sales Supply Chain Risk Management., Steffen Luksch

Electronic Theses and Dissertations

Lean supply chains with cost optimized production and logistics processes in the automotive industry have become a benchmark for other industries. Short delivery times, low inventories and high availability are parameters which assume a robust supply chain. In industrial practice we see, however, that in the After Sales business particularly related to the supply of automotive spare parts, that there are always unforeseen delays in delivery. In order to avoid service level losses on the focal firm level due to missing parts it is necessary to understand the risk structure on the supplier side. For this reason, a risk model …

A Novel Numerical Framework For Simulation Of Multiscale Spatio-Temporally Non-Linear Systems In Additive Manufacturing Processes., Nachiket Patil

Electronic Theses and Dissertations

New computationally efficient numerical techniques have been formulated for multi-scale analysis in order to bridge mesoscopic and macroscopic scales of thermal and mechanical responses of a material. These numerical techniques will reduce computational efforts required to simulate metal based Additive Manufacturing (AM) processes. Considering the availability of physics based constitutive models for response at mesoscopic scales, these techniques will help in the evaluation of the thermal response and mechanical properties during layer-by-layer processing in AM. Two classes of numerical techniques have been explored. The first class of numerical techniques has been developed for evaluating the periodic spatiotemporal thermal response involving …

Robust System For Infection Control - An Industrial Systems Engineering Approach, Sundaravel Vinay Swarup Achudhan

Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research

Health care delivery in the United States needs improvement. Each year about 98,000 people die as a result of medical errors and the United States is outranked by a number of developed countries in life expectancy, mortality and comorbidity. Healthcare quality is determined based on the quality of the service provided to the patient during their visit. Apart from the traditional problem solving design and development tools used to improve healthcare quality, The National Academy of Engineering and the Institute of Medicine recommend systems engineering principle and systems engineering tools to be used in health care to improve the industry. …

Understanding The Electricity-Water-Climate Change Nexus Using A Stochastic Optimization Approach, Ivan Saavedra Antolinez

Theses and Dissertations

Climate change has been shown to cause droughts (among other

catastrophic weather events) and it is shown to be exacerbated by the

increasing levels of greenhouse gas emissions on our planet. In May 2013, CO₂ daily average concentration over the Pacific Ocean at Mauna Loa Observatory reached a dangerous milestone of 400 ppm, which has not been experienced in thousands of years in the earth's climate. These levels were attributed to the ever-increasing human activity over the last 5-6 decades. Electric power generators are documented by the U.S. Department of Energy to be the largest users of ground and …

Real-Time Analysis And Control Of Serial Production Lines For Energy Efficient Manufacturing, Guorong Chen

Theses and Dissertations

Productivity analysis, operation control and energy consumption reduction

have been the central topics in manufacturing research and practice. They are closely related to each other. Control of production operations is considered as one of the most economical methods to improve energy efficiency in manufacturing systems, while system performance analysis serves as the base of production control. On the other hand, effective operation control can result to energy efficiency in manufacturing.

Steady state analysis has been investigated extensively; however, transient analysis remained largely unexplored. Our research focuses on system modeling, performance analysis, and real-time operation control of serial production lines with …

Poisson Distributed Individuals Control Charts With Optimal Limits, Negin Enayaty Ahangar

Graduate Theses and Dissertations

The conventional method used in attribute control charts is the Shewhart three sigma limits. The implicit assumption of the Normal distribution in this approach is not appropriate for skewed distributions such as Poisson, Geometric and Negative Binomial. Normal approximations perform poorly in the tail area of the these distributions. In this research, a type of attribute control chart is introduced to monitor the processes that provide count data. The economic objective of this chart is to minimize the cost of its errors which is determined by the designer. This objective is a linear function of type I and II errors. …

Time-Driven Activity-Based Costing For Healthcare Provider Supply Chain Processes, Martha Isaura Gonzalez

Graduate Theses and Dissertations

In a time when healthcare costs continue to rise, nearly a third of hospital operating expenses are related to supplies, and the healthcare supply chain is complex, it is pertinent for healthcare providers to have a clear understanding of their healthcare supply chain process costs. Having a clear picture into how these costs are driven and where opportunities for cost reductions exist can support supply chain efficiencies. In this research, we develop a Time-Driven Activity-Based Costing (TDABC) supply chain cost management tool for healthcare providers. A TDABC management system can provide healthcare providers with valuable product and process supply chain …

Investigating Present And Future Interactions Between Radio Frequency Identification, Additive Manufacturing And Supply Chain Management, Michael Nobuhiro Ochi

Master's Theses

A screening experiment was paired with research observing the past, present and futures of additive manufacturing (a.k.a. rapid prototyping, 3D printing), radio frequency identification, and supply chain management. The experiment tested different properties of objects created with a desktop fused deposition modelling printer to observe if any single factors or interactions affected the read range of embedded passive UHF RFID inlay. The combination of material and infill percentage had a statistically significant effect on read range, however the analysis is weak since the data could not justify the normality assumption of ANOVA. Furthermore, the size of the effect was small …

Simulation Model For Optimization Of A Landside Harbor Logistic Chain Of Container Terminals., Klaus Striegel

Electronic Theses and Dissertations

The world wide transportation of all kind of goods with containers is a fast growing business. The challenge is to transport in the shortest time to the lowest cost. The vessels therefore become bigger and bigger. The biggest vessel with 16000 TEU is since December 2012 in service. But the next generation with 18000-22000 TEU is already being built. This raises questions in acceleration of loading and unloading process, the handling in the yards of the harbors and the transportation of the containers to Hinterland. The most common way is still to transport the container from the yard by truck, …

Supply Chain Flexibility In The Special Purpose Vehicle Industry., Florian J. Loderbauer 1982-

Electronic Theses and Dissertations

Supply chains of the Special Purpose Vehicle (SPV) industry are complex and with many constraints. Since the SPV industry is a special field of operation, there is no classical supply chain strategy which is appropriate. It is possible to apply concepts of industries with similar requirements but there is a high loss of time and money because these classical concepts do not fit to the SPV industry. Even strategies of the conventional automobile industry cannot be transferred. Therefore, there is the need to develop a supply chain concept for companies of the SPV industry. As a first step, basic knowledge …

Pavement Deterioration Modeling And Design Of A Composite Pavement Distress Index For Kentucky Interstate Highways And Parkways., Chenglong Luo

Electronic Theses and Dissertations

Pavement deterioration is one of the most important driver for prioritizing pavement management and preservation (PMP) projects. The primary goal of this thesis is to provide reasonable predictive functions from multiple linear regression (MLR) models and artificial neural networks (ANN) that can be adopted by Kentucky Transportation Cabinet (KYTC). Furthermore, we use analytic hierarchy process (AHP) to design a composite pavement distress index in order to help Kentucky Transportation Cabinet (KYTC) prioritizing PMP projects based on 11 different distress indices. Numerical results show that the MLR models provide relatively high R square values of approximately 0.8. Both MLR and ANN …

A Mathematical Programming Approach For Dispatching And Relocating Ems Vehicles., Farshad Majzoubi 1983-

Electronic Theses and Dissertations

We consider the problem of dispatching and relocating EMS vehicles during a pandemic outbreak. In such a situation, the demand for EMS vehicles increases and in order to better utilize their capacity, the idea of serving more than one patient by an ambulance is introduced. Vehicles transporting high priority patients cannot serve any other patient, but those transporting low priority patients are allowed to be rerouted to serve a second patient. We have considered three separate problems in this research. In the first problem, an integrated model is developed for dispatching and relocating EMS vehicles, where dispatchers determine hospitals for …

Two-Stage Network Design In Humanitarian Logistics., Seyed Soroush Moeini

Electronic Theses and Dissertations

Natural disasters such as floods and earthquakes can cause multiple deaths, injuries, and severe damage to properties. In order to minimize the impact of such disasters, emergency response plans should be developed well in advance of such events. Moreover, because different organizations such as non-governmental organizations (NGOs), governments, and militaries are involved in emergency response, the development of a coordination scheme is necessary to efficiently organize all the activities and minimize the impact of disasters. The logistics network design component of emergency management includes determining where to store emergency relief materials, the corresponding quantities and distribution to the affected areas …

A Heuristic Algorithm For Determining The Part Set In A Powder-Bed Additive Manufacturing Machine., Sonja Dieder

Electronic Theses and Dissertations

The goal of this research is to develop a procedure for the placement of a priority part into a planned build in a powder-bed additive manufacturing machine. Toward that goal, a heuristic procedure was developed that seeks to maximize the revenue in a scheduled build, subject to due-date constraints; i.e., all parts with the closest due date will not only be included in the build, but will be placed near the bottom of the build. Likewise, any part in the scheduled build that does not have an immediate due date is a candidate for removal in order to accommodate a …

Implications Of Additive Manufacturing On Complexity Management Within Supply Chains In A Production Environment., Andre Kieviet

Electronic Theses and Dissertations

This dissertation focuses on developing a generic framework for using additive manufacturing as an appropriate production method to address the management of complexity in supply chains. While several drivers such as changing customer demand patterns and intensifying global competition increase product complexity, the available number of product variants and related processes within the supply chain itself increase costs and dilute scale effects. Several concepts and tools like mass customization, modularization, and product platforms have been developed in the past decades, but most of them focus on the product structure. Currently, there is no comprehensive tool set developed in the field …

Veneer Defect Data Collection & Analysis, Marylin Glass-Angeles, Josef Imesh, Nathan Christensen, Nathan Bowen, Zachary Miller

Research and Creative Activities Poster Day

Objectives: This project is Phase I of a two part study with the purpose of aiding Steelcase in reducing defects occurring in the sanding step of the wood manufacturing process. During Phase I, the team collected data and used the results to identify the greatest material and profit losses. The continuing goal of the study will be to address these issues to the greatest extent possible.

Modeling And Analysis Of Patient Care Assistants’ Workflow, Ewing Tiong

Research and Creative Activities Poster Day

Background

While there is a considerable amount of research on medium-to-long decision support models for healthcare systems, little emphasis is placed on research that focuses on short-term operational decisions made by healthcare providers. Patient care assistants (PCAs) provide both indirect and direct patient care under the supervision of a registered nurse (RN). Main responsibilities include:

• Gathering patient data
• Assisting patients with activities of daily living (ADLs)

Compressed Air Leak Study, Colin Knue, Suresh Kumar Baskaran

Research and Creative Activities Poster Day

Today compressed air plays very important role as part of expense. A huge chunk of expenditure can be saved as such. Effort in terms of monetary and energy will be a waste if even fraction of the compressed air is lost because of leak in the system without making the best use of it. There are leak detection and repair systems that can be adapted to overcome such wastage of compressed air. In this project, a procedure using ultrasonic leak detector to identify, locate and repair leaks is adapted. The summary of controlling already existing leaks and preventing more new …

Ergonomics Study Led Lighting Assembly, Marylin Glass-Angeles, Nathan Christensen, Josef Imesh, Lorena Peña, Natalia Matos

Research and Creative Activities Poster Day

The current assembly process of the LED Lighting product line at Landscape Forms (LF) combines high force exertion, motion repetition and an uncomfortable posture. Therefore, Industrial Engineers overseeing the manufacturing of these products raised a concern for their workers health and were interested in identifying injury risks related to the current methodology as well as opportunities for the reduction of such risks.

The Green Manufacturing Industrial Consortium’S (Gmic) Approach To Zero-Waste-To-Landfill (Zwtl), Nathan J. Christensen, Marylin Glass-Angeles

Research and Creative Activities Poster Day

Introduction: As organizations continually seek to reduce various forms of waste, some may seek to reduce their landfill impact and improve recycling and material disposal practices. Many organizations interested in reducing their landfill waste have embarked on a zero-waste-to-landfill (ZWTL) journey. This journey involves thoroughly exploring the landfill waste of an organization, reverse tracking the waste to its source, and establishing new practices and procedures for eliminating the source of waste from the landfill stream. The purpose of this poster is to describe the methodology used by the Green Manufacturing Initiative to assist companies on their ZWTL journey.

Systems Simulation Analysis Of A Hospital Rapid Response System, Shoruk Mansour

Research and Creative Activities Poster Day

The poster presents a systems simulation analysis of a hospital rapid response system. Analysis of interventions and future work related to the project are included.

Supplier Assessment And Selection Using Fuzzy Analytic Hierarchy Process In A Steel Manufacturing Company, Farzad Tahriri, Nader Ale Ebrahim, Mohammad Dabbagh

Nader Ale Ebrahim

Every organization needs suppliers and no organization can exist without suppliers. Therefore, the organizations approach to suppliers and the selection of the appropriate supplier, its acquisition processes and policies, and its relationships with suppliers, is of vital importance, both to organizations and suppliers alike. No organization can be successful without the support of its supplier base, operationally and strategically, short or long-term.To select the best supplier, it is essential to make an analytical decision based upon tangible and intangible criteria. Chose and management of a supplier has to be congruent with organizational strategy. Therefore, the vision and strategy of the …

Exploratory Study In Container Loading Embraer 190 Aircraft, Ryan H. Auyeung

Open Access Theses

Since the dawn of aviation, cargo loading on aircraft has remained virtually constant. A person and a baggage cart together have been the primary method of loading baggage on to aircraft, and this practice has virtually remained unchanged, especially for narrow body aircraft. This study explores the question of whether a loading device, designed for Embraer 190 aircraft, can increase economic efficiency by reducing aircraft turnaround times, increasing aircraft utilization and reducing work hours. In the course of designing a theoretical loading device for an Embraer 190, various literature ranging from elaborate articulating conveyor belts, to the use of LD3-45W …

Detecting Air Traffic Controller Interventions In Recorded Air Transportation System Data, Yul Kwon

Open Access Theses

In this study, I propose a systematic method of detecting aircraft deviation due to air traffic controller (ATC) intervention. The aircraft deviations associated with ATC interventions are detected using a heuristic algorithm developed from analyzing the actual positions of an aircraft to its filed flight plan when the aircraft trajectories were identified as having an encounter in a loss-of-separation incident. An actual (closed-loop) flight trajectory of the Cleveland Air Route Traffic Control Center (ZOB ARTCC) was collected from the FlightAware database. This was compared with the corresponding planned (open-loop) trajectory dataset generated by the Microsoft© Flight Simulator X (FSX). I …

Modeling And Optimization Of Care Transitions, Yuming Mo

Open Access Theses

More than 145 million people live with at least one chronic condition, and almost half of them have multiple conditions. As a result, many managed care and integrated delivery systems have taken a great interest in alleviating the many deficiencies in managing the current care system that spans across various care delivery settings. In addition, many Americans have to rely on some social health insurance plan to cover her care expenses. As a result, these patients often may not been sufficiently cured but have to be transitioned to less expensive but less medically intensive facilities, due to the increasing pressure …

A Comparative Analysis Of An Original And A Post-Hoc Application Of Lean Six Sigma Methodology, Jin Qiu

Open Access Theses

Current society develops faster and faster every day with customers' demands increasing rapidly. Decreasing time for product development and enhancing customer satisfaction are becoming more significant. In the business world, there is no industry that could exist without an efficient supply chain. In the fierce competitive environment of today, the supply chain must address potential problems and risks that may exist and assure continuous improvement.

One common supply chain management practice in many industries is to apply lean methodology to the supply chain model in order to maximize the customers' value and eliminate waste. By eliminating waste, the process can …

A Lean Logistics Assessment Tool For Smes In The Manufacturing Sector, Diana Lorena Sanchez Ramirez

Open Access Theses

This study developed an assessment tool to rate the maturity of the current and desired states of lean logistics operations in small and medium enterprises. The tool consists of 48 best practices classified into 8 critical factors: Inventory, Transportation, Administration, Information Systems, Warehouse, Forecasting, Packaging and Supplier Network. Each of the best practices and critical factors were identified throughout a thorough literature review and comparative analysis between authors to define commonalities among them. Using gap analysis; this tool results in a SWOT matrix providing a roadmap for lean implementation. The resulting model was evaluated by subject matter experts in different …

The Effect Of Job Performance Aids On Quality Assurance, Erik David Fosshage

Open Access Theses

Job performance aids (JPAs) have been studied for many decades in a variety of disciplines and for many different types of tasks, yet this is the first known research experiment using JPAs in a quality assurance (QA) context. The objective of this thesis was to assess whether a JPA has an effect on the performance of a QA observer performing the concurrent dual verification technique for a basic assembly task. The JPA used in this study was a simple checklist, and the design borrows heavily from prior research on task analysis and other human factors principles. The assembly task and …

Nanohub Database Analysis: Using Anomaly Detection Method And Principal Component Analysis, Mengyang Qi

Open Access Theses

This thesis analyzes usage data from nanoHUB.org, which is a web-based infrastructure for e-collaboration among nanotechnology simulation community. Previous analysis of nanoHUB database showed he nanoHUB usage data follows an unknown, heavy-tailed distributions. This thesis extends the analysis and develops an automatic anomaly detection method based on piece-wise linear approximation. The anomaly here refers to collective user behaviors different from others. The result shows that the method can accurately detect the anomalies in the unknown, heavily detailed distribution. This thesis also applies anomaly detection method and principal component analysis to other databases in nanoHUB and successfully reveals differences between different …