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Operations Research, Systems Engineering and Industrial Engineering Commons™
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- Decision support systems (3)
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Articles 1 - 30 of 33
Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering
An Analysis Of Early Software Reliability Improvement Techniques, John G. Leonard, Ric K. Nordgren
An Analysis Of Early Software Reliability Improvement Techniques, John G. Leonard, Ric K. Nordgren
Theses and Dissertations
This research explores early life cycle software reliability prediction models or techniques to predict the reliability of software prior to writing code, and a method for increasing or improving the reliability of software products early in the development life cycle. Five prediction models and two development techniques are examined. Each model is statically analyzed in terms of availability of data early in the life cycle, ease of data collection, and whether data is currently collected. One model and the two techniques satisfied those requirements and are further analyzed for their ability to predict or improve software reliability. While the researchers …
Development Of A System To Determine The Economically Optimal Combination Of Housing For An Air Force Installation, Johnathan E. Hendrix
Development Of A System To Determine The Economically Optimal Combination Of Housing For An Air Force Installation, Johnathan E. Hendrix
Theses and Dissertations
The United States Military is faced with the decision of how to house its military members and their families. The three options available to house these families are: 1) utilize existing on-base housing; 2) build new on-base housing; or, 3) compensate a military family monetarily to find housing off-base. This research focused on the development of a tool to all the decision maker in determining what combination of the three options is economically optimal for an individual Air Force Installation. The model developed incorporates the costs associated to the local area and conditions at the specific installation to determine the …
Scheduling And Sequencing Arrivals To A Stochastic Service System, Peter M. Vanden Bosch
Scheduling And Sequencing Arrivals To A Stochastic Service System, Peter M. Vanden Bosch
Theses and Dissertations
Optimization of scheduled arrival times to an appointment system is approached from the perspectives of both queueing and scheduling theory. The appointment system is modeled as a one-server, first-come-first-served, transient queue with independent, distinctly distributed service times and no-show rates. If a customer does show, it is assumed to be punctual. The cost of operating the appointment system is a convex combination of customers' waiting times and the server's overtime. While techniques for finding the optimal static and dynamic schedules of arrivals have been proposed by other researchers, they mainly have focused on identical customers and strictly punctual arrivals. This …
A Comparison Of The Military's Organic Movement And Commercial Express Carriers, Travis E. Condon, Kirk A. Patterson
A Comparison Of The Military's Organic Movement And Commercial Express Carriers, Travis E. Condon, Kirk A. Patterson
Theses and Dissertations
The DoD has begun outsourcing airlift in order to expedite high priority cargo movement. However, are commercial express carriers more expedient in the cargo delivery than the Air Force organic transportation system? Although anecdotal evidence suggests commercial carriers are faster, little empirical research has been conducted on this subject. This study compares the military's organic transportation system with Federal Express in the delivery of high priority cargo to Spangdahlem Air Base, Germany. The Large Sample Test of Hypothesis was used to determine if there was a significant difference between the cargo transit times of the two. The mean delivery time …
Applying Cross-Decking And Activity-Based Costing To Military Distribution Centers: A Proposed Framework, Jonathan P. Elliott, Dwight H. Hintz Jr.
Applying Cross-Decking And Activity-Based Costing To Military Distribution Centers: A Proposed Framework, Jonathan P. Elliott, Dwight H. Hintz Jr.
Theses and Dissertations
Current events and fiscal constraints have focused DoD planners' attention on reducing logistics costs and improving efficiency while maintaining effective combat operations support. Military leaders are seeking private industry best practices that may help the DoD achieve these goals. Two commercially successful business practices that may help the DoD achieve its goals are cross-docking and Activity-Based Costing (ABC). Cross-docking is a commercially proven approach to material distribution through a distribution center that can help reduce inventories, speed material flows, and cut related logistics activity costs. However, the DoD is faced with the challenge of costing current and potential logistics processes …
The Effects Of Extraneous Presentation Graphics On Decision Making, Thomas S. Tingley
The Effects Of Extraneous Presentation Graphics On Decision Making, Thomas S. Tingley
Theses and Dissertations
Almost every professional presentation includes some form of graphics. Many previous researchers have analyzed the relative effectiveness of graphical decision aids, such as pie charts or bar graphs. Very little research, however, has been conducted to determine the effects of extraneous graphics, such as pictures and logos, on decision making. This study employed an experiment to determine whether extraneous graphics hinder or enhance a decision maker's ability to obtain the pertinent information from a professional presentation. Other factors such as gender and graphics training were also analyzed for any influence on the results obtained. The results of the study indicated …
Foreign Military Sales Supply Support: Is There A Better Way?, Eric G. Ellmyer, Won Joon Jang
Foreign Military Sales Supply Support: Is There A Better Way?, Eric G. Ellmyer, Won Joon Jang
Theses and Dissertations
In today's world of declining defense budgets, there is an increasing need for South Korea to ensure they obtain the best dollar value when procuring defense articles. With the increasing financial situation, the purpose of this thesis is to research a surrogate third party firm and determine to what degree South Korea and other foreign military sales customers obtain the best value for their money for follow-on support item procurements. South Korea has participated in the Parts and Repair Ordering System program since its inception. However, South Korea has received little, if any, feedback regarding lead time and cost performance …
A Comparison Of Circular Error Probable Estimators For Small Samples, Charles E. Williams
A Comparison Of Circular Error Probable Estimators For Small Samples, Charles E. Williams
Theses and Dissertations
Several previous studies investigated the performance of competing circular error probable (CEP) estimators for small samples. This estimation is important in ICBM analysis because, due to expense, there are a limited number of ICBM test launches. In the most recent previous study (1993), Tongue considered five CEP estimators in a simulation test, attempting to determine the behavior of these estimators for populations of various bias, ellipticity, correlation, and sample size. In this paper, we build on Tongue's findings in three ways: (1) The number of estimators compared is expanded to eight. (2) Different factors and factor levels are used. (3) …
Transportation Modeling Of Remote Radar Sites And Support Depots, Sonia E. Leach
Transportation Modeling Of Remote Radar Sites And Support Depots, Sonia E. Leach
Theses and Dissertations
The North Warning System (NWS), a joint program of the United States Air Force (USAF) and the Royal Canadian Air Force (RCAF), is responsible for the maintenance of 47 remote radar sites across northern Canada. NWS's current airlift operations, which support the radar maintenance activities, consist of both helicopters and fixed wing aircraft positioned at five support depots. This thesis considers whether a reconfiguration of these support depots and the assignment of radar sites to them can result in either an airlift or total cost savings for NWS. Mixed integer linear programming models were formulated to address the questions surrounding …
A Cercla-Based Decision Support System For Environmental Remediation Strategy Selection, Brian J. Grelk
A Cercla-Based Decision Support System For Environmental Remediation Strategy Selection, Brian J. Grelk
Theses and Dissertations
The Idaho National Environmental Engineering Laboratory (INEEL), operating in conjunction with the Department of Energy (DOE), faces with the complex decision of selecting an environmental remediation strategy for the Subsurface Disposal Area (SDA) of the Radioactive Waste Management Complex (RWMC). This research uses value-focused thinking and multiattribute preference theory techniques to produce a decision analysis model to aid the decisionmakers as they select a remediation strategy. A deterministic analysis using expert opinion and the best available engineering data demonstrates the model's capabilities. The model ranks 27 specific remediation strategies based on how well they meet CERCLA's five balancing criteria: implementability, …
A Methodology For Evaluating And Enhancing C4i Networks, Christine C. Davis
A Methodology For Evaluating And Enhancing C4i Networks, Christine C. Davis
Theses and Dissertations
This effort focuses on expanding the bottleneck links of an existing C4I network to meet projected demands. The minimum cost-maximum flow algorithm is used to identify bottlenecks. A decision analysis approach enables the mapping of performance objectives for a network expansion into measurable attributes within the structure of a value hierarchy. A multi-attribute value function combines these measures into an overall system effectiveness measure. This allows for an evaluation of the impact of potential upgrade components on the system. A knapsack model imposes budgetary constraints on the selection of components. This methodology allows for the design of an optimized system …
Sensitivity Analysis Of A Combat Simulation Using Response Surface Methodology, William J. Berg
Sensitivity Analysis Of A Combat Simulation Using Response Surface Methodology, William J. Berg
Theses and Dissertations
This thesis provides a methodology to analyze the sensitivity of a combat simulation relative to the capabilities of the modeled weapon systems. Response Surface Methodology (RSM) was the primary technique used for analysis. A ground battle scenario was developed with a commercial PC wargame Empire II: The Art of War(TM). In the computer verses computer mode, the wargame was transformed into a combat simulation'. A screening experiment was used to determine which of an original 23 weapon factors were actually significant to this scenario. After analyzing the remaining five factors, only three ended up as truly significant to the battle …
Modeling Mirv Footprint Constraints In The Weapons Assignment Model, Elliot T. Fair
Modeling Mirv Footprint Constraints In The Weapons Assignment Model, Elliot T. Fair
Theses and Dissertations
US Strategic Command (USSTRATCOM) is developing a new linear programming model called the Weapons Assignment Model (WAM) to perform weapons assignment for the Strategic Integrated Operations Plan (SIOP). One of the major improvements WAM will have over its predecessor is the ability to include Multiple Independently Targetable Reentry Vehicle (MIRV) footprinting constraints in the optimization process. In order to include MIRV footprint constraints in WAM, a methodology is needed to model the MIRV footprints in a manner that is consistent with the limitations of linear programming. Two techniques for modeling MIRV footprints were developed. The first, Geometric Approximation (GA), uses …
Ranking And Generating Alternatives For The National Air Intelligence Center's (Naic) Resource Allocation Strategy, Steven M. Cox
Ranking And Generating Alternatives For The National Air Intelligence Center's (Naic) Resource Allocation Strategy, Steven M. Cox
Theses and Dissertations
Allocating resources is never an easy task, especially when requirements call for more resources than those available. It gets more difficult when the availability of resources shrinks from year to year. This is the case at the National Air Intelligence Center (NAIC). In each of the past five years, NAIC has been forced to make their resource allocation decision with fewer dollars and less manpower. This decision has been time consuming, manpower intensive, and sometimes very heated. In an effort to lessen these three consequences, a resource allocation model, based upon the NAIC Commander's values and preferences, was developed. The …
Modeling A Chemical Battlefield And The Resulting Effects In A Theater-Level Combat Model, Todd M. Gesling
Modeling A Chemical Battlefield And The Resulting Effects In A Theater-Level Combat Model, Todd M. Gesling
Theses and Dissertations
This thesis describes the development of a methodology to model chemical weapons use in the Joint Staff's Joint Warfare Analysis Experimental Prototype (JWAEP) and to quantify the resulting effects. The methodology incorporates organic unit assets and theater-level chemical assets into JWAEP by using the three principles of nuclear, biological, and chemical defense (NBC) which reflect joint and Army doctrine, and combines them with the basic concepts already used in existing theater-level models. Other aspects of the problem include representing chemical 'packages' on the battlefield, determining attrition and time effects, adjusting unit effectiveness, determining chemical package intelligence acquisition procedures, identifying solution …
Linking Procurement Dollars To An Alternative Force Structures' Combat Capability Using Response Surface Methodology, James B. Grier
Linking Procurement Dollars To An Alternative Force Structures' Combat Capability Using Response Surface Methodology, James B. Grier
Theses and Dissertations
A General Officer Steering Group, chaired by HQ USAF/XOM tasked action to develop and implement evaluation and analysis support to lead turn' the Program Objective Memorandum (POM) and Joint Warfare Capability Assessment (JWCA) process. This evaluation process should be designed to supply measures of the 'health' of the Air Force program in light of the Defense Planning Guidance (DPG) and the Chairman's Program Assessment (CPA). The Air Force needs to be able to quickly evaluate various alternative force structures with regards to its combat capability, measured in terms of theater level campaign objectives (CO). HQ USAF/XOM tasked HQ USAF/XPY to …
A Decision Support System For Joint Force Air Component Commander (Jfacc) Combat Planning, Donald W. Hinton
A Decision Support System For Joint Force Air Component Commander (Jfacc) Combat Planning, Donald W. Hinton
Theses and Dissertations
This system allows assessment of the Master Air Attack Plan (MAAP) during construction and at completion. The system functions around a relational database management system providing a decision support tool for the Guidance, Apportionment, & Targeting (GAT) cell of Central Command's JFACC Combat Plans. A Microsoft Access application is programmed to provide PC-based, real time evaluation of air campaign goals and constraints. The decision support system was validated in February 1997 by the CENTAF combat plans staff at Blue Flag 97-1. The software and user's manual are maintained at HQ ACC/XP-Studies and Analysis Squadron.
Simulation Model Of Fighter Pilot Assignment Process, Anthony J. Hutfles
Simulation Model Of Fighter Pilot Assignment Process, Anthony J. Hutfles
Theses and Dissertations
This thesis analyzes the effect Continental United States (CONUS) Time on Station (TOS) has on filling critical rated assignments. A SIMSCRIPT II.5 simulation model of the F15 and F16 pilots assignment process was developed. The simulation tested the effect of changing CONUS TOS from 3 years to 6 years in half year increments. Analysis of the number of unfilled rated assignments from simulation runs of 10 years in length indicated that changing CONUS TOS by itself has no statistically significant effect on model's output. The analysis was expanded to a 2(2) factorial experimental design using CONUS TOS and Total Active …
Statistical Modeling And Optimization Of Nuclear Waste Vitrification, Todd E. Combs
Statistical Modeling And Optimization Of Nuclear Waste Vitrification, Todd E. Combs
Theses and Dissertations
This thesis describes the development of a methodology to minimize the cost of vitrifying nuclear waste. Pacific Northwest Laboratory (PNL) regression models are used as baseline equations for modeling glass properties such as viscosity, electrical conductivity, and two types of durability. Revised PNL regression models are developed that eliminate insignificant variables from the original models. The Revised PNL regression model for electrical conductivity is shown to better predict electrical conductivity than the original PNL regression model. Neural networks are developed for viscosity and the two types of durability, PCT-B and MCC-1 B. The neural network models are shown to outperform …
Selecting A Health Care Option For Military Beneficiaries That Minimizes Health Care Costs While Maintaining Personal Desires For Choice, Norman H. Pallister
Selecting A Health Care Option For Military Beneficiaries That Minimizes Health Care Costs While Maintaining Personal Desires For Choice, Norman H. Pallister
Theses and Dissertations
Tricare, the triservice, triple-option, managed care plan for the uniformed services, incorporates a managed care support contract to complement Military Treatment Facilities. Currently being implemented throughout the CONUS, Tricare provides more equitable health care service to all military beneficiaries, improved access to care, a reduction in health care costs, and provides beneficiaries with an expanded choice of medical-care providers. This thesis examines the Tricare program and reviews relevant health care literature, both military and civilian. Using these inputs, the author presents a deterministic decision analysis model that allows a military beneficiary to select a health care option that minimizes his …
An Object Oriented Simulation Of The C-17 Wingtip Vortices In The Airdrop Environment, Hans J. Petry
An Object Oriented Simulation Of The C-17 Wingtip Vortices In The Airdrop Environment, Hans J. Petry
Theses and Dissertations
This thesis effort focuses on the development of an object-oriented simulation of C-17 personnel airdrop operations and provides a tool for risk assessment of jumper and wingtip vortex interaction. Using the initial modeling efforts of the Wright Laboratory, this model expands those efforts to include random aircraft, wind and jumper movement within the simulation using MODSIM III as its language. Once the model was built, verified, and calibrated, it helped perform a preliminary analysis of jumper risk with varying element spacing and no crosswind. The results of the simulation provided 15 data points with which linear and logistic regression provided …
Analysis Of A Methodology For Linear Programming Optimality Analysis, Chanseok Jeong
Analysis Of A Methodology For Linear Programming Optimality Analysis, Chanseok Jeong
Theses and Dissertations
The methodology of Johnson, Baner, Moore, and Grant can be applied to large scale linear programming models. A methodology for optimality analysis of linear programs was developed to create metamodels using response surface methodology techniques such as experimental design and least squares regression. A metamodel consists of a simple equation which is able to predict the optimal objective function value of a linear program. What is needed is some large scale application of the techniques to verify how accurate they are. In the research, I plan to use the large scale LP model, STORM. I use the "Hot Start" idea …
System Comparison Procedures For Automatic Target Recognition Systems, Anne E. Catlin
System Comparison Procedures For Automatic Target Recognition Systems, Anne E. Catlin
Theses and Dissertations
Estimating the performance of an automatic target recognition (ATR) system in terms of probability of successful target identification involves extensive image collection and processing, which can be very time-consuming and expensive. We investigate the Wald sequential test for the difference in two proportions as a sample size-reducing alternative to ranking and selection and the classical method of comparing binomial confidence intervals. The test is modified for the multiple pairwise comparison of four systems, and is applied to actual data to compare different configurations of the Moving and Stationary Target Acquisition and Recognition (MSTAR) System.
The Application Of Statistical Process Control To Departure Reliability Improvement, Liu W. Chieh
The Application Of Statistical Process Control To Departure Reliability Improvement, Liu W. Chieh
Theses and Dissertations
This research effort focuses on applying statistical process control (SPC) techniques to the departure reliability improvement process for Air Mobility Command, Mission Reliability Office. Basic SPC methods, including Pareto analysis, cause and effect diagrams, and control charts are determined to be effective tools for analyzing and assessing departure reliability. In addition, two more alternative measures of effectiveness for departure reliability are evaluated and compared using AMC's data. SPC methods are also shown to be useful in assessing in performance and in determining the reporting frequency for on-time performance information. Additional statistical analyses are conducted, including on-way analyses of variance, hypothesis …
Analyzing Remediation Technologies For Department Of Energy Sites Contaminated With Dnapl Pollutants, Anthony F. Papatyi
Analyzing Remediation Technologies For Department Of Energy Sites Contaminated With Dnapl Pollutants, Anthony F. Papatyi
Theses and Dissertations
The Department of Energy is in the process of conducting a Remedial Investigation/Feasibility Study for a site contaminated with Dense Non-Aqueous Phase Liquid (DNAPL) pollutants at their Paducah Kentucky facility. A major part of this effort is the screening of alternative technologies. This thesis effort focuses on acquiring insight into a number of remediation technology trains that are candidates for the Paducah site. This insight is used to recommend and justify the screening of candidate technology trains. The research makes use of two decision analysis models (one is deterministic, the other is probabilistic) built to provide a quantitative assessment of …
Modeling And Analyzing The Effect Of Ground Refueling Capacity On Airfield Throughput, W. Heath Rushing
Modeling And Analyzing The Effect Of Ground Refueling Capacity On Airfield Throughput, W. Heath Rushing
Theses and Dissertations
This thesis develops five analytical models to understand the current ground refueling process, to optimize the airfield configuration and to determine the refueling policy which maximizes throughput, the primary measure of airfield efficiency. This study models the airfield refueling process as a continuous time Markov process to adequately represent the inherent stochastic nature of the transitory ground refueling system and provide an analytical evaluation of various airfield configurations. Also, the study provides an optimal refueling policy to minimize the number of aircraft on the ground which in turn minimizes the average amount of time aircraft spend on the ground in …
Turkish Air Mobility Modeling, Huseyin Topcuoglu
Turkish Air Mobility Modeling, Huseyin Topcuoglu
Theses and Dissertations
The aim of this research is to provide a tactical mobility model which is user friendly and flexible so the user is able to change the inputs, and evaluate the situation with the projected data for an operational plan. Thus, the users can analyze their system by using the model to see whether or not mobility requirements can be met within a definite time frame, and how long it takes to satisfy the requirements. Generalized Air Mobility Model (GAMM) was chosen to model TAMC's airlift system and has been found suitable for application to TUAF mobility problems. The software enables …
Decision Support Model To Select The Optimal Municipal Solid Waste Management Policy At United States Air Force Installations, Johnathon L. Dulin
Decision Support Model To Select The Optimal Municipal Solid Waste Management Policy At United States Air Force Installations, Johnathon L. Dulin
Theses and Dissertations
The United States Air Force has recently defined three objectives in developing strategies regarding the management of municipal solid waste at the base level. They are: (1) 50 percent reduction in total waste generated, from a 1992 baseline amount, by 1999; (2) 50 percent recycling of all waste generated, beginning in 1999; and, (3) a minimum cost program. With these objectives in mind, base environmental engineers must take appropriate actions in an effort to develop a program that meets these goals. Through consultations with base environmental managers, as well as research of the available literature, a decision support model was …
Sensitivity Of Availability Estimates To Input Data Characterization, Darren P. Durkee
Sensitivity Of Availability Estimates To Input Data Characterization, Darren P. Durkee
Theses and Dissertations
Reliability analysts are often faced with the challenge of characterizing the behavior of system components based on limited data. Any insight into which model input data is most significant and how much data is necessary to achieve desired accuracy requirements will improve the efficiency and cost effectiveness of the data collection and data characterization processes. This thesis assesses potential significant factors in the probabilistic characterization of component failure and repair behavior with respect to the effect on system availability estimates. Potential factors were screened for significance utilizing fractional. factorial and Plackett-Burman experimental designs for several system models developed using an …
A Cost Impact Assessment Tool For Pfs Logistics Consulting, Angela P. Giddings
A Cost Impact Assessment Tool For Pfs Logistics Consulting, Angela P. Giddings
Theses and Dissertations
Response surface methodology (RSM) is used for optimality analysis of the cost parameters in mixed integer linear programming. This optimality analysis goes beyond traditional sensitivity and parametric analysis in allowing investigation of the optimal objective function value response over pre-specified ranges on multiple problem parameters. Design of experiments and least squares regression are used to indicate which cost parameters have the greatest impact on the optimal objective function value total cost-and to approximate the optimal total cost surface over the specified ranges on the parameters. The mixed integer linear programming problems of interest are the large-scale problems in supply chain …