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Articles 12511 - 12540 of 13799
Full-Text Articles in Engineering
Acuta Enews July 1999, Vol.28, No. 7
Acuta Enews July 1999, Vol.28, No. 7
ACUTA Newsletters
In This Issue
New Board for 1999-2000
ACUTA EVENTS
Fall Seminars Focus on Customer Service & New Technologies
DC Update
Legislative & Regulatory Alert
They Answered Our Call
Board Report
Welcome New Members
Positions Available
Exploring Participation Processes For Technology Development: Case Studies Of Biotechnology Research And Development Projects In Thailand, Omjai Yuktavetya
Exploring Participation Processes For Technology Development: Case Studies Of Biotechnology Research And Development Projects In Thailand, Omjai Yuktavetya
Engineering Management & Systems Engineering Theses & Dissertations
There is increased awareness in the organizational and management literature that participation can make contributions in technology development. One of the problems in developing biotechnology in Thailand is that only a small portion of publicly funded research and development projects directly result in commercial success. Among the reasons cited (TDRI 1992a) is a lack of collaboration between various stakeholders; therefore, an effective technology policy to support their participation is needed. This research explores current participation processes in biotechnology research and development projects in Thailand in which there were different perspectives among various stakeholders. The quantitative and qualitative methodologies developed here …
Development Of A Hierarchical Model-Based Decision Support System (Dss) For Production Planning And Control Systems, Khaled Mohamed Sami Abdel-Hamid
Development Of A Hierarchical Model-Based Decision Support System (Dss) For Production Planning And Control Systems, Khaled Mohamed Sami Abdel-Hamid
Archived Theses and Dissertations
No abstract provided.
Evolving Neural Networks Applied To Predator-Evader Problem, Shivakumar Viswanathan, Ilker Ersoy, Filiz Bunyak, Cihan H. Dagli
Evolving Neural Networks Applied To Predator-Evader Problem, Shivakumar Viswanathan, Ilker Ersoy, Filiz Bunyak, Cihan H. Dagli
Computer Science Faculty Research & Creative Works
The creation of strategies to meet abstract goals is an important behavior exhibited by natural organisms. A situation requiring the development of such strategies is the predator-evader problem. To study this problem, Khepera robots are chosen as the competing agents. Using computer simulations the evolution of the adaptive behavior is studied in a predator-evader interaction. A bilaterally symmetrical multilayer perceptron neural network architecture with evolvable weights is used to model the “brains” of the agents. Evolutionary programming is employed to evolve the predator for developing adaptive strategies to meet its goals. To study the effect of learning on evolution a …
The Effectiveness Of An On-Line Graduate Engineering Management Course, Rosemarie Maffei Evans, Madison Daily, Susan L. Murray
The Effectiveness Of An On-Line Graduate Engineering Management Course, Rosemarie Maffei Evans, Madison Daily, Susan L. Murray
Engineering Management and Systems Engineering Faculty Research & Creative Works
In the summer of 1997, the Engineering Management Department of the University of Missouri-Rolla's (UMR) began offering its first Internet-based graduate level course. This course, Advanced Production Management, was designed to utilize a combination of Internet-based tools, such as EMail and Chat rooms to create a alternative means for the delivery of course material. This paper will draw these following conclusions from more than a year of research, which included over 100 students in six different course offerings. First, the Internet-based students performed equally as well as the control group students. Second, students tend to have exaggerated time requirement expectations …
Industrial Engineering Made Simple, Deena Daggett, Sema E. Alptekin
Industrial Engineering Made Simple, Deena Daggett, Sema E. Alptekin
Industrial and Manufacturing Engineering
Many high school students these days do not quickly recognize or identify Industrial Engineering (IE) procedures, practices, and products. Recruitment of qualified students into IE programs requires continuous planning, publicizing, and networking. Traditional recruitment efforts have included high school visits, brochures & flyers, and university-sponsored workshops. However, these techniques have only achieved mediocre success. Currently, a need exists for new promotional materials that utilize visual tools and provide a “hands-on” approach. We have developed several exercises that successfully introduce IE. Two such exercises are explained in this paper. The first exercise demonstrates the differences between Assembly line and Cellular Manufacturing …
Acuta Enews June 1999, Vol.28, No. 6
Acuta Enews June 1999, Vol.28, No. 6
ACUTA Newsletters
In This Issue
Winners Announced in Student Papers Contest
Conference Offers Many Choices
Dues Notices Mailed
Does It Make Sense?
Board Report
Share Your Expertise
DC at a Glance
Positions Available
Welcome New Members
A Five-Year Development Plan For The California Aviation Database, H.-S. Jacob Tsao
A Five-Year Development Plan For The California Aviation Database, H.-S. Jacob Tsao
Faculty Publications
The California Aviation Database (CAvD) project was suggested by Caltrans Aeronautics Program to fulfill a need of the planners involved in aviation system planning and programming activities to locate and access aviation data and information in an efficient and comprehensive way. CAvD is being implemented in the form of an Internet website and is currently intended as a five-year project. However, the development can be accelerated, and the duration will depend on the available resources. CAvD is a joint project between the National Center of Excellence for Aviation Operations Research (NEXTOR) and the California Department of Transportation (Caltrans). Its primary …
Management Information System For Iso 9000, Reem Mahmoud Abdel Motaal
Management Information System For Iso 9000, Reem Mahmoud Abdel Motaal
Archived Theses and Dissertations
No abstract provided.
Moving Transportation Toward Sustainable Development: The Need For A Paradigm Shift, Bahador Ghahramani, Stephen A. Raper
Moving Transportation Toward Sustainable Development: The Need For A Paradigm Shift, Bahador Ghahramani, Stephen A. Raper
Engineering Management and Systems Engineering Faculty Research & Creative Works
Despite progress in controlling exhaust emissions, the increase of cars on the road will surpass progress in emission control technology. The automobile is currently responsible for 50% of world fossil fuel consumption, 15-20% of CO2 emissions worldwide and overwhelming particulate air pollution in many urban centers. Current efforts in emissions control have been focused on improving the efficiency of fuels and automobiles and their emissions. However, as a mode of transportation, the automobile is one of the most inefficient, both in environmental and economic costs. Even the most efficient cars developed today will still significantly contribute to the amount …
Assessing The Impact Of Design For Environment Guidelines : A Case Study Of Office Telephones, Hussam Fawzi Al-Okush
Assessing The Impact Of Design For Environment Guidelines : A Case Study Of Office Telephones, Hussam Fawzi Al-Okush
Theses
This research addresses a fundamental question: How much of the improvement in a product's environmental performance is directly attributable to the Design for Environment (DFE) tools and guidelines, and how much results simply from other design objectives or enabling technologies? The research examines four generations of a business telephone over the last thirty years, including the current generation, which has been designed using DEE guidelines. A lifecycle assessment (LCA) and demanufacturing analysis were performed on each of the first three generations to determine various technology and non-DEE trends. This information was used to forecast the progression to a 1997 non-DEE …
Acuta Enews May 1999, Vol. 28, No. 5
Acuta Enews May 1999, Vol. 28, No. 5
ACUTA Newsletters
In This Issue
Board Approves Slate of Nominees
Moderators & Monitors Needed in Nashville!
Board Report
Who Pays for Cellular Calls?
DC at a Glance
Positions Available
Welcome New Members
Simulation Modeling Presentations: The Life Cycle, Edward Yellig, Paul Savory
Simulation Modeling Presentations: The Life Cycle, Edward Yellig, Paul Savory
Department of Industrial and Management Systems Engineering: Faculty Publications
A typical large scale simulation modeling project spans many months and encompasses activities such as problem definition, data collection, model development, experimentation, and scenario analysis. During the life cycle of a simulation project, numerous presentations are made to many different types of audiences. The purpose of these presentations will vary from seeking project approval, requesting information, discussing simulation model features, verifying the model, validating the model, presenting the experimental results, and offering model conclusions. This paper will discuss presentation techniques we used during a year-long simulation-modeling project. We will highlight techniques used for defining the purpose of each presentation, identifying …
Use Of Feedforward Neural Networks For Machine Vision Calibration, Mark B. Lynch, Cihan H. Dagli, Mahesh Vallenki
Use Of Feedforward Neural Networks For Machine Vision Calibration, Mark B. Lynch, Cihan H. Dagli, Mahesh Vallenki
Engineering Management and Systems Engineering Faculty Research & Creative Works
Machine vision calibration is an important step to obtaining usable measurements in inspection and automation operations. Conventional calibration techniques require the development of elaborate mathematical models and have prior knowledge of many parameters. Creating a suitable model and obtaining reasonable values for some calibration parameters is often difficult and error prone. In this article, a neural network approach is presented as an indirect non-linear optimization method to machine vision calibration. This approach does not require a mathematical model be developed nor any prior knowledge about the setup or calibration parameters. A universal calibration approach is developed and utilized in various …
Graphical Display And Data Structure For Virtual Prototyping, David William Manry
Graphical Display And Data Structure For Virtual Prototyping, David William Manry
Doctoral Dissertations
One of the goals of engineering firms is to bring better products to market faster. Although concurrent engineering can aid in this endeavor, it requires that all areas of an organization work simultaneously. Thus, current product data must be accessible to everyone.
Virtual prototyping allows this simultaneous exchange of information. Virtual prototyping not only replaces the physical model in product development with a virtual model, but also it goes further by allowing data associated with each part of the model to be accessed. This data is not limited to just geometric properties but could contain other quantifiable properties, such as …
Acuta Enews April 1999, Vol.28, No. 4
Acuta Enews April 1999, Vol.28, No. 4
ACUTA Newsletters
In This Issue
Calling-Party-Pays Cellular to Get Legislative Push from Cellular Industry
Midwest Local Events
Achievements Award Nominations
Van Houweling to Speak on Internet2
Michael Zastrocky Described Enterprise 2004
Board Report
Near-TV-Quality Over Net
DC at a Glance
Positions Available
Welcome New Members
Acuta Enews March 1999, Vol.28, No. 3
Acuta Enews March 1999, Vol.28, No. 3
ACUTA Newsletters
In This Issue
Austin Peay Survives Tornado
Nominate Now for Board of Directors
Tips to Make Your Presentation Better
President's Message
ACUTA Spring Seminars
Preparing Competitive Proposals
Board Report
DC at a Glance
Positions Available
Welcome New Members
Strategic Effects Of Airpower And Complex Adaptive Agents: An Initial Investigation, Thomas R. Tighe
Strategic Effects Of Airpower And Complex Adaptive Agents: An Initial Investigation, Thomas R. Tighe
Theses and Dissertations
US airpower theory and doctrine depend on the concept that the destruction of a few key targets or centers of gravity can unravel the enemy's physical ability to wage war or break his will to prosecute the war. This synergistic decimation of the enemy's effectiveness and resistance to our political will is known as Strategic Effects. These strategic effects are very difficult to quantify and are not directly accounted for in current DoD computer models. Since these computer models are used to aid with decisions about force structure and budget priorities, many believe that the Air Force's greatest potential contribution …
A New Sequential Goodness Of Fit Test For The Three-Parameter Gamma Distribution With Known Shape Based On Skewness And Kurtosis, Chil Ho Park
Theses and Dissertations
This research presents a new sequential goodness of fit test for the three-parameter gamma distribution with a known shape. The test is accomplished by employing two new tests, sample skewness and sample kurtosis, sequentially as test statistics. Unlike the typical goodness of fit test, using parameter estimation methods such as maximum likelihood estimation and minimum distance estimation, this test using the two test statistics above does not involve a substantial degree of computational complexity. Large Monte Carlo simulation has been used to determine critical values and overall significance levels for all combinations of the two tests, and to conduct extensive …
A New Sequential Goodness-Of-Fit-Test For The Three-Parameter Weibull Distribution With Known Shape Parameter Value Based On Skewness And Q-Statis G.O.F. Test Statistics, Tibet Memis
Theses and Dissertations
Due to its flexibility, the Weibull distribution has very wide applicability in a lot of disciplines and is very prevalent in reliability theory. Thus, a lot of statistical tests that generally have a substantial degree of computational complexity have been developed to determine if the data at hand can be represented with this distribution. This research presents a new omnibus goodness-of-fit test (G.O.F.) that has less computational complexity than the existing tests for the three-parameter Weibull distribution using a sequential application of two individual tests, sample skewness and Q-Statistic. A Monte Carlo procedure has been employed to generate critical values …
Decision Analysis Methodology To Evaluate Organization, Shawn C. Thompson
Decision Analysis Methodology To Evaluate Organization, Shawn C. Thompson
Theses and Dissertations
The organizational structure of the civil engineer squadron's operations flight has undergone numerous changes over the last fifty years. Today the structure of the flight to the element level is mandated by Air Force Instructions; however, each unit is given the flexibility to organize below the element level. Most civil engineer units are struggling through the decision of how to organize their flights without a sound methodology to guide their efforts. Providing such a methodology is the objective of this thesis. To accomplish the objective, the history behind the operations flight structure was researched. In addition to this historical research, …
Modeling And Analysis Of Aerial Port Operations, Timothy W. Albrecht
Modeling And Analysis Of Aerial Port Operations, Timothy W. Albrecht
Theses and Dissertations
The focus of this thesis effort is gaining useful insight into aerial port operations by employing an animated simulation. Understanding airfield capacity, resources, and functioning allows greater accuracy and efficiency in both planning for future force structures and matching mobility assets with commanders' objectives. Two current simulations, ACE (Airfield Capacity Estimator) and BRACE (Base Resource Allocation and Capabilities Estimator), model mobility activities at the base level with some deficiencies. The model proposed by this thesis, APOM (Aerial Port Operations Model), will provide the mobility analyst an animated simulation with two, new measures of aerial port operations; a real-time estimate of …
Dynamic Unmanned Aerial Vehicle (Uav) Routing With A Java-Encoded Reactive Tabu Search Metaheuristic, Kevin P. O'Rourke
Dynamic Unmanned Aerial Vehicle (Uav) Routing With A Java-Encoded Reactive Tabu Search Metaheuristic, Kevin P. O'Rourke
Theses and Dissertations
In this paper we consider the dynamic routing of unmanned aerial vehicles (UAVs) currently in operational use with the US Air Force. Dynamic vehicle routing problems (VRP) have always been challenging, and the airborne version of the VRP adds dimensions and difficulties not present in typical ground-based applications. Previous UAV routing work has focused on primarily on static, pre-planned situations; however, scheduling military operations, which are often ad-hoc, drives the need for a dynamic route solver that can respond to rapidly evolving problem constraints. With these considerations in mind, we examine the use of a Java-encoded metaheuristic to solve these …
A Comparison Of Genetic Algorithm Parametrization On Synthetic Optimization Problems, Mehmet Eravsar
A Comparison Of Genetic Algorithm Parametrization On Synthetic Optimization Problems, Mehmet Eravsar
Theses and Dissertations
Meta-heuristics have been deployed to solve many hard combinatorial and optimization problems. Parameterization of meta-heuristics is an important challenging aspect of meta-heuristic use since many of the features of these algorithms cannot be explained theoretically. Experiences with Genetic Algorithms (GA) applied to Multidimensional Knapsack Problems (MKP) have shown that this class of algorithm is very sensitive to parameterization. Many studies use standard test problems, which provide a firm basis for study comparisons but ignore the effect of problem correlation structure. This thesis applies GA to MKP. A new random repair operator, which projects infeasible solutions into feasible region, is proposed. …
Quality Function Deployment From An Operations Research Perspective, Eve M. Burke
Quality Function Deployment From An Operations Research Perspective, Eve M. Burke
Theses and Dissertations
The methodology of Quality Function Deployment (QFD) is compared to operations analysis standards. Of special concern is how Air Combat Command (ACC) uses QFD for the Modernization Planning Process (MPP). ACC digresses from the traditional use of QFD for incorporating quality into manufacturing processes to use it as a planning tool. ACC's goal in implementing QFD is to incorporate the demands of the Air Force mission into the modernization planning effort. ACC's use of QFD to identify and quantify current deficiencies and quantify the value of alternative future solutions has led to the investigation of inconsistencies with QFD, both generally …
Using Simulation To Model The Army Recruiting Station With Multi-Quality Prospects, Edward L. Mclarney
Using Simulation To Model The Army Recruiting Station With Multi-Quality Prospects, Edward L. Mclarney
Theses and Dissertations
This thesis explores the application of simulation to the Army Recruiting Station. Included are the effects of leadership styles and policies, the effects of recruiters with different personality types, and differences in processing for varying types of recruits. Research included heavy emphasis into determining the effects of leadership on recruiter productivity. In addition, major changes were made to a previous simulation model. The changes allowed current research to be implemented into the simulation. This research is intended to help the United States Army Recruiting Command better understand how changes in the recruiting process and in leadership policies affect productivity.
Pilot Inventory Complex Adaptive System (Picas): An Artificial Life Approach To Managing Pilot Retention, Martin P. Gaupp
Pilot Inventory Complex Adaptive System (Picas): An Artificial Life Approach To Managing Pilot Retention, Martin P. Gaupp
Theses and Dissertations
The retention of skilled pilots continues to be a problem that plagues the United States Air Force. After spending millions of dollars on training and education, it is disheartening to see the mass exodus of experienced aviators from the Air Force that has been occurring in the past decade. Many blame the economy, others the Air Force itself but few are able to accurately predict how or why they are all leaving. The current personnel models do not adequately determine retention rates. Complex adaptive systems theory, however, might provide some insight. By modeling the system at the pilot's level, allowing …
Portfolio Selection Of Innovative Technologies Via Life Cycle Cost Modeling, Scott C. Naylor
Portfolio Selection Of Innovative Technologies Via Life Cycle Cost Modeling, Scott C. Naylor
Theses and Dissertations
High technology firms are faced with the dilemma of deciding which products to develop, which generations of technology to pass over, and which products to skip entirely. As competition among these firms increases and the life cycles of technological products shorten, there exists a great deal of pressure to bring products rapidly to the market. As a result, recouping the costs of research and development (R & D) and earning a profit becomes increasingly uncertain. Traditional life cycle cost models do not directly address shortened life cycles, time to market, or learning curve issues; all are critical factors in the …
Unmanned Aerial Vehicle Mission Level Simulation, Jennifer G. Walston
Unmanned Aerial Vehicle Mission Level Simulation, Jennifer G. Walston
Theses and Dissertations
We develop an object-oriented simulation that models the surveillance and Active Suppression of Enemy Air Defense (SEAD) missions of the Unmanned Aerial Vehicle (UAV) RQ-1A Predator. The simulation, written in Java using the Silk simulation package, interfaces with a Reactive Tabu Search routing algorithm to provide optimal UAV routes. The routing algorithm is called by the simulation to account for changes in weather conditions and to provide a means of dynamically retasking the UAV. The simulation and analysis support a UAV Battlelab initiative to test the operational effects of proposed changes in Predator performance and UAV capability to perform in …
A Validation Assessment Of Thunder 6.5'S Intelligence, Surveillance, And Reconnaissance Module, Francine N. Nelson
A Validation Assessment Of Thunder 6.5'S Intelligence, Surveillance, And Reconnaissance Module, Francine N. Nelson
Theses and Dissertations
A validation assessment of THUNDER 6.5's Intelligence, Surveillance, and Reconnaissance (ISR) module is accomplished using formulational and experimental validation techniques. A comparison of ISR purposes and processes according to military doctrine is made with the purposes and processes of ISR implemented within THUNDER 6.5. This comparison provides an overview of the process, an understanding of the level of aggregation within THUNDER, insight into possible problem areas in THUNDER, and a basis for improving THUNDER ISR processes. Sensitivity analysis of the ISR parameters as they relate to the Quality, Quantity, and Timeliness of ISR is also presented to provide insight into …