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Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering

A Single‐Machine Scheduling Problem With Random Processing Times, Srinivas R. Chakravarthy Oct 2018

A Single‐Machine Scheduling Problem With Random Processing Times, Srinivas R. Chakravarthy

Srinivas Chakravarthy

We consider the problem of scheduling n jobs with random processing times on a single machine in order to minimize the expected variance of the completion times. We prove a number of results, including one to the effect that the optimal schedule must be V shaped when the jobs have identical means or variances or have exponential processing times.


A Virtual Environment For Enterprise Engineering Education, Can Saygin, Benjamin Dow, Raymond Kluczny, Majdi Najm, Scott Grasman Jan 2016

A Virtual Environment For Enterprise Engineering Education, Can Saygin, Benjamin Dow, Raymond Kluczny, Majdi Najm, Scott Grasman

Dow Scott

Several resources highlight the need to effectively use modern technology to gain more productive and rewarding undergraduate science, mathematics, engineering, and technology education. In addition to the growth of information technology, the importance of hands-on practice and active learning has been highlighted in various resources. These factors, coupled with inadequate and insufficient real-world experiences in undergraduate education, have become a major reason for under-qualified and under-employed graduates. This paper discusses the creation of the University of Missouri Virtual Enterprise, which provides context for development of learning modules for enterprise engineering education. This approach will improve the undergraduate education experience by ...


Smart Engagement: Planning And Decision-Making In Distressed Urban Neighborhoods, Justin Hollander, Michael P. Johnson Jr., Eliza D. Whiteman Dec 2015

Smart Engagement: Planning And Decision-Making In Distressed Urban Neighborhoods, Justin Hollander, Michael P. Johnson Jr., Eliza D. Whiteman

Michael P. Johnson

This book addresses the challenges and opportunities associated with the use of decision science and information technologies to help stabilize and revitalize distressed urban communities in the United States.

While cities in the U.S. grow and decline at various rates and for different underlying reasons, neighborhoods within cities that have faced sustained demographic and socio-economic challenges over time may have multiple factors in common, such as physical blight, widespread vacancies, underserved and marginalized populations and, in some cases, local markets that do not respond to traditional economic development strategies. These distressed communities are often indicative of high levels of ...


Patient-Centered Appointment Scheduling Using Agent-Based Simulation, Tammy Toscos, Ayten Turkcan, Brad Doebbeling Dec 2015

Patient-Centered Appointment Scheduling Using Agent-Based Simulation, Tammy Toscos, Ayten Turkcan, Brad Doebbeling

Tammy R Toscos

Enhanced access and continuity are key components of patient-centered care. Existing studies show that several interventions such as providing same day appointments, walk-in services, after-hours care, and group appointments, have been used to redesign the healthcare systems for improved access to primary care. However, an intervention focusing on a single component of care delivery (i.e. improving access to acute care) might have a negative impact other components of the system (i.e. reduced continuity of care for chronic patients). Therefore, primary care clinics should consider implementing multiple interventions tailored for their patient population needs. We collected rapid ethnography and ...


Okay With Asthma V.2.0: An Interactive Narrative Asthma Program, Xueping Li, Tami Wyatt, Rachel Farmer, Yu Huang Jul 2015

Okay With Asthma V.2.0: An Interactive Narrative Asthma Program, Xueping Li, Tami Wyatt, Rachel Farmer, Yu Huang

Tami H Wyatt

No abstract provided.


Okay With Asthma V.2.0: An Interactive Narrative Asthma Program, Xueping Li, Tami Wyatt, Rachel Farmer, Yu Huang Jul 2015

Okay With Asthma V.2.0: An Interactive Narrative Asthma Program, Xueping Li, Tami Wyatt, Rachel Farmer, Yu Huang

Tami H Wyatt

No abstract provided.


Role Activity Diagram-Based Discrete Event Simulation Model For Healthcare Service Delivery Processes, Nagesh Shukla Dec 2014

Role Activity Diagram-Based Discrete Event Simulation Model For Healthcare Service Delivery Processes, Nagesh Shukla

Nagesh Shukla

In case of health care systems, discrete event simulations (DESs) are useful techniques to identify problematic process issues. However, currently available simulation models often use a simplified flow chart as an input which represents patient flow obtained from on-site observations and interviews complemented with historic patient data. This is insufficient in modelling important interactions between clinical staff, equipment and patients, causing the resultant models to be incomplete and unrealistic. This in turn leads to oversimplified outputs from any simulations. This paper presents a systematic methodology for the development of DES model from process mapping model based on the role activity ...


Identification And Ranking Of High Pedestrian Crash Zones Using Gis, Vanjeeswaran Krishnakumar, Srinivas Pulugurtha, Shashi Nambisan Sep 2014

Identification And Ranking Of High Pedestrian Crash Zones Using Gis, Vanjeeswaran Krishnakumar, Srinivas Pulugurtha, Shashi Nambisan

Shashi Nambisan

Identification of high risk zones is important to develop and implement strategies to enhance pedestrian safety. While the analysis of motor vehicle related crashes has seen the use of Geographic Information Systems (GIS), pedestrian related safety analyses have not taken as much advantage of the capabilities afforded by GIS programs. The objectives of this research are to present a methodology to identify and rank high pedestrian crash zones, and to introduce a GIS based tool based on the methodology. Capabilities of the tool include the following: identify spatial concentration patterns, select high pedestrian crash zones, extract crash and demographic characteristics ...


Orientation To Umass And The Eh&S Program, Donald Robinson Jun 2014

Orientation To Umass And The Eh&S Program, Donald Robinson

Donald A. Robinson

No abstract provided.


Connecting The Dots: Career Reflections, Donald Robinson May 2014

Connecting The Dots: Career Reflections, Donald Robinson

Donald A. Robinson

This presentation reflects on the life experiences (dots)career of Donald Robinson, Ph.D. spanning the years from 1960 t0 2014. Connectiing the Dots can only be done looking backwards and the idea for this presentation was drawn from a presentation of the same title given by Stephen Jobs at a Stanford University graduation.


Semidefinite Approximation For Mixed Binary Quadratically Constrained Quadratic Programs, Zi Xu, Mingyi Hong, Zhi-Quan Luo Dec 2013

Semidefinite Approximation For Mixed Binary Quadratically Constrained Quadratic Programs, Zi Xu, Mingyi Hong, Zhi-Quan Luo

Mingyi Hong

Motivated by applications in wireless communications, this paper develops semidefinite programming (SDP) relaxation techniques for some mixed binary quadratically constrained quadratic programs (MBQCQP) and analyzes their approximation performance. We consider both a minimization and a maximization model of this problem. For the minimization model, the objective is to find a minimum norm vector in N-dimensional real or complex Euclidean space, such that M concave quadratic constraints and a cardinality constraint are satisfied with both binary and continuous variables. By employing a special randomized rounding procedure, we show that the ratio between the norm of the optimal solution of the minimization ...


An Optimal-Model Of Entry, Ticketing And Seating Of Neyland Stadium, Isaac Atuahene, Rupy Sawhney, Xueping Li, Charles Aikens Oct 2013

An Optimal-Model Of Entry, Ticketing And Seating Of Neyland Stadium, Isaac Atuahene, Rupy Sawhney, Xueping Li, Charles Aikens

Isaac Atuahene

No abstract provided.


Development And Usability Of Icare: An Electronic Health Record System, Chayawat Indranoi, Tami Wyatt, Xueping Li Jul 2013

Development And Usability Of Icare: An Electronic Health Record System, Chayawat Indranoi, Tami Wyatt, Xueping Li

Tami H Wyatt

No abstract provided.


Engineering Technology Management Graduate Student Online Learning Preferences, Mark Doggett Jun 2013

Engineering Technology Management Graduate Student Online Learning Preferences, Mark Doggett

Mark Doggett

As online graduate programs continue to grow, so does the availability of learning media and delivery tools. Faculty and students are increasingly using web-based means of communication such as blogs, wikis, discussion boards, and collaborative tools in addition to assigning traditional readings, lecture notes, homework, writing exercises, and examinations. There have always been multiple choices available to instructors for the delivery of content and the assessment of learning, but now there are more varieties of instructional technologies from which to choose. Given the choice, are there certain online approaches that engineering technology management graduate students prefer? Qualitative and quantitative data ...


A Decision Support Model For The Location Of Hand Sanitizer Dispensers In Hospitals, Laila Cure Ph.D., Richard Van Enk Ph.D., Ewing Tiong Ph.D. May 2013

A Decision Support Model For The Location Of Hand Sanitizer Dispensers In Hospitals, Laila Cure Ph.D., Richard Van Enk Ph.D., Ewing Tiong Ph.D.

Laila Cure

Compliance with hand hygiene practices is directly affected by the accessibility and availability of cleaning agents. Nevertheless, the decision of where to locate these dispensers is often not explicitly or fully addressed in the literature. In this paper, we study the problem of selecting the locations to install alcohol-based hand sanitizer dispensers throughout a hospital unit. We investigate the relevant criteria in selecting dispenser locations that promote compliance with hand hygiene practices, propose metrics for the evaluation of various location configurations, and formulate a dispenser location optimization model that incorporates such criteria. A complete methodology to collect data and obtain ...


Hybrid Agent Based Simulation With Adaptive Learning Of Travel Mode Choices For University Commuters, Nagesh Shukla, Albert Munoz, Jun Ma, Nam Huynh Apr 2013

Hybrid Agent Based Simulation With Adaptive Learning Of Travel Mode Choices For University Commuters, Nagesh Shukla, Albert Munoz, Jun Ma, Nam Huynh

Nagesh Shukla

This paper presents a methodology for developing a hybrid agent-based micro-simulation model to capture the impacts of commuter travel mode choices on a University campus transport network. The proposed methodology involves: (i) developing realistic population of commuter agents (students and staff); (ii) assigning activity lists and travel mode choices to agents using machine learning method; and, (iii) traffic micro-simulation of the study area transport network. This furthers the understanding of current transport modal distributions, factors affecting the travel mode choice decisions, and, network performance through a number of hypothetical travel scenarios.


Cv, Elizabeth C. Scheyder Oct 2012

Cv, Elizabeth C. Scheyder

Elizabeth C Scheyder

CV, updated November 2012.


Results From Engineering Entrepreneurship Minor Within Industrial Engineering Curriculum, Joseph Wilck, H. Lee Martin, Xueping Li, Rupy Sawhney, Gautham Rajappa Apr 2012

Results From Engineering Entrepreneurship Minor Within Industrial Engineering Curriculum, Joseph Wilck, H. Lee Martin, Xueping Li, Rupy Sawhney, Gautham Rajappa

Xueping Li

No abstract provided.


Sustainable Vehicle Routing With Multiple Objectives, Joseph Wilck, Gautham Rajappa, Xueping Li Apr 2012

Sustainable Vehicle Routing With Multiple Objectives, Joseph Wilck, Gautham Rajappa, Xueping Li

Xueping Li

No abstract provided.


Schedule Elective Surgeries To Operating Rooms Using Constraint Programming, Zhaoxia Zhao, Xueping Li, Xiaoyan Zhu Apr 2012

Schedule Elective Surgeries To Operating Rooms Using Constraint Programming, Zhaoxia Zhao, Xueping Li, Xiaoyan Zhu

Xueping Li

No abstract provided.


Optimal Solar Pv Arrays Integration For Distributed Generation, Xueping Li, Olufemi Omitaomu Apr 2012

Optimal Solar Pv Arrays Integration For Distributed Generation, Xueping Li, Olufemi Omitaomu

Xueping Li

No abstract provided.


Ant Colony Optimization For Split Delivery Vehicle Routing Problem, Gautham Rajappa, Joseph Wilck, Xueping Li Apr 2012

Ant Colony Optimization For Split Delivery Vehicle Routing Problem, Gautham Rajappa, Joseph Wilck, Xueping Li

Xueping Li

No abstract provided.


A Multi-Level Inventory Control Model For File System Prefetching Via Simulation, Cong Guo, Xueping Li, Yang Sun Apr 2012

A Multi-Level Inventory Control Model For File System Prefetching Via Simulation, Cong Guo, Xueping Li, Yang Sun

Xueping Li

No abstract provided.


Analyzing Supercomputer Utilization Unser Queuing With A Priority Formula And A Strict Backfill Policy, Michael Vanderlan, Jonathan Celso, Joseph Wilck, Xueping Li, Mark Fahey Dec 2011

Analyzing Supercomputer Utilization Unser Queuing With A Priority Formula And A Strict Backfill Policy, Michael Vanderlan, Jonathan Celso, Joseph Wilck, Xueping Li, Mark Fahey

Xueping Li

No abstract provided.


Testing Icare V.1.0: An Electronic Health Record Learning Tool, T.H. Wyatt, Xueping Li, C. Indranoi, M. Bell Dec 2011

Testing Icare V.1.0: An Electronic Health Record Learning Tool, T.H. Wyatt, Xueping Li, C. Indranoi, M. Bell

Xueping Li

No abstract provided.


Cost Reduction In Healthcare Via Lean Six Sigma, Yu Huang, Xueping Li, Joseph Wilck, Tom Berg Dec 2011

Cost Reduction In Healthcare Via Lean Six Sigma, Yu Huang, Xueping Li, Joseph Wilck, Tom Berg

Xueping Li

No abstract provided.


Simulation-Based Evaluation Of Port Evacuation Plans For Predictable Natural Disasters, Xiuli Qu, Maurice Jackson, Lauren Davis Dec 2011

Simulation-Based Evaluation Of Port Evacuation Plans For Predictable Natural Disasters, Xiuli Qu, Maurice Jackson, Lauren Davis

Dr. Lauren B Davis

Effective port emergency evacuation could reduce the potential damages and losses caused by a predictive natural disaster. Thus, most U.S. ports have evacuation plans or guidelines established for predictive natural disasters, especially hurricanes. However, hurricane Katrina still revealed that these existing emergency evacuation plans may not be as effective as originally expected. The objective of this study is to provide a quantitative approach to evaluating the effectiveness of port emergency evacuation plans for hurricanes. A discrete-event simulation model is developed in this study to capture the dynamic evacuation process in a complex port environment when a hurricane approaches a ...


A Comparative Analysis Of Management Accounting Systems' Impact On Lean Implementation, Xueping Li, Rapinder Sawhney, Eric John Arendt, Karuppuchamy Ramasamy Dec 2011

A Comparative Analysis Of Management Accounting Systems' Impact On Lean Implementation, Xueping Li, Rapinder Sawhney, Eric John Arendt, Karuppuchamy Ramasamy

Xueping Li

No abstract provided.


Analyzing Trade-Offs Between Efficiency And Equity On Public Facility Location, Zhaoxia Zhao, Xiaoyan Zhu, Xueping Li Apr 2011

Analyzing Trade-Offs Between Efficiency And Equity On Public Facility Location, Zhaoxia Zhao, Xiaoyan Zhu, Xueping Li

Xueping Li

No abstract provided.


Supply Chain Information Sharing Strategy On Inventory Systems, Cong Guo, Xueping Li, Joseph Wilck Apr 2011

Supply Chain Information Sharing Strategy On Inventory Systems, Cong Guo, Xueping Li, Joseph Wilck

Xueping Li

No abstract provided.