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Operations Research, Systems Engineering and Industrial Engineering Commons™
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Articles 1 - 11 of 11
Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering
The Design And Development Of An Additive Fabrication Process And Material Selection Tool, Andrew Palmer
The Design And Development Of An Additive Fabrication Process And Material Selection Tool, Andrew Palmer
Electronic Theses and Dissertations
In the Manufacturing Industry there is a subset of technologies referred to as Rapid Technologies which are those technologies that create the ability to compress the time to market for new products under development . Of this subset, Additive Fabrication (AF), or more commonly known as Rapid Prototyping (RP), acquires much attention due to its unique and futuristic approach to the production of physical parts directly from 3D CAD data, CT or MRI scans, or data from laser scanning systems by utilizing various techniques to consecutively generate cross-sectional layers of a given thickness upon the previous layer to form 3D …
New Heuristics For The 0-1 Multi-Dimensional Knapsack Problems, Haluk Akin
New Heuristics For The 0-1 Multi-Dimensional Knapsack Problems, Haluk Akin
Electronic Theses and Dissertations
This dissertation introduces new heuristic methods for the 0-1 multi-dimensional knapsack problem (0-1 MKP). 0-1 MKP can be informally stated as the problem of packing items into a knapsack while staying within the limits of different constraints (dimensions). Each item has a profit level assigned to it. They can be, for instance, the maximum weight that can be carried, the maximum available volume, or the maximum amount that can be afforded for the items. One main assumption is that we have only one item of each type, hence the problem is binary (0-1). The single dimensional version of the 0-1 …
Dod Acquisition Workforce Education: An Sba Education Case Study, Richard Davenport
Dod Acquisition Workforce Education: An Sba Education Case Study, Richard Davenport
Electronic Theses and Dissertations
A Department of Defense (DoD) M&S education task force is in the process of studying the Modeling and Simulation (M&S) education of the acquisition workforce. Historically, DoD acquisition workforce education is not referred to as education, but rather what the Defense Acquisition University (DAU) refers to as "practitioner training, career management, and services." The DAU is the organization primarily responsible for training the DoD acquisition corps in conjunction with service schools and strategic partners in the civilian sector. DAU programs primarily focus on program management, contracting, and management of logistics across the system life cycle. Further, the examples and cases …
Data Entry Error In Mobile Keyboard Device Usage Subject To Cognitive, Environmental, And Communication Workload Stressors Present In Fully Activated Emergency Operations Centers, Samiullah Durrani
Electronic Theses and Dissertations
The diversity and dynamic nature of disaster management environments necessitate the use of convenient, yet reliable, tools for technology. While there have been many improvements in mitigating the effects of disasters, it is clearly evident by recent events, such as Hurricane Katrina that issues related to emergency response and management require considerable research and improvement to effectively respond to these situations. One of the links in a disaster management chain is the Emergency Operations Center (EOC). The EOC is a physical command center responsible for the overall strategic control of the disaster response and functions as an information and communication …
Presence-Dependent Performance Differences Between Virtual Simulations And Miniature Worlds, Andre Huthmann
Presence-Dependent Performance Differences Between Virtual Simulations And Miniature Worlds, Andre Huthmann
Electronic Theses and Dissertations
The purpose of simulation is to avoid reality-based constraints by the implemen-tation of a synthetic model. Based on this advantage, interactive simulations have conquered all areas of applications from acquisition, and training, to research. Simulation results are transferred in many ways into reality and conclusions are drawn from the simulation to the application. Many anecdotal observations on human-in-the-loop simulations have shown a significant difference in actor behavior between simulations and reality-based applications. It seems that the factors that makes simulation so attractive, namely the absence of constraints and especially of imminent danger for persons and equipment, influence the behavior and …
Physical Ergonomic And Mental Workload Factors Of Mobile Learning Affecting Performance Of Adult Distance Learners: Student Pers, Rochelle Jones
Physical Ergonomic And Mental Workload Factors Of Mobile Learning Affecting Performance Of Adult Distance Learners: Student Pers, Rochelle Jones
Electronic Theses and Dissertations
Distance education is the fastest growing educational modality because of advances information technology has made over the past 25 years. Adult learners have become the fastest growing population in distance education. Adult learners, through technical tools and devices they use on the job, have become more digitally literate and mobile, making the ability to access class work on the go a necessity. Mobile learning or m-learning (learning that uses wireless, portable, mobile computing, and communication devices) is becoming an extension of distance learning, providing a channel for students to learn, communicate, and access educational material outside the traditional classroom environment. …
Emergency Evacuation Route Planning Considering Human Behavior During Short- And No-Notice Emergency Situations, Suebpong Kittirattanapaiboon
Emergency Evacuation Route Planning Considering Human Behavior During Short- And No-Notice Emergency Situations, Suebpong Kittirattanapaiboon
Electronic Theses and Dissertations
Throughout United States and world history, disasters have caused not only significant loss of life, property but also enormous financial loss. The tsunami that occurred on December 26, 2004 is a telling example of the devastation that can occur unexpectedly. This unexpected natural event never happened before in this area. In addition, there was a lack of an emergency response plan for events of that magnitude. Therefore, this event resulted not only in a natural catastrophe for the people of South and Southeast Asia, but it is also considered one of the greatest natural disasters in world history. After the …
A Systematic Analysis To Identify, Mitigate, Quantify, And Measure Risk Factors Contributing To Falls In Nasa Ground Support Ope, Joylene Ware
Electronic Theses and Dissertations
The objective of the research was to develop and validate a multifaceted model such as a fuzzy Analytical Hierarchy Process (AHP) model that considers both qualitative and quantitative elements with relative significance in assessing the likelihood of falls and aid in the design of NASA Ground Support Operations in aerospace environments. The model represented linguistic variables that quantified significant risk factor levels. Multiple risk factors that contribute to falls in NASA Ground Support Operations are task related, human/personal, environmental, and organizational. Six subject matter experts were asked to participate in a voting system involving a survey where they judge risk …
Occupational Lower Extremity Risk Assessment Modeling, Christopher Reid
Occupational Lower Extremity Risk Assessment Modeling, Christopher Reid
Electronic Theses and Dissertations
Introduction: Lower extremity (LE) work-related musculoskeletal disorders (WMSDs) are known to occur with cumulative exposure to occupational and personal risks. The objective of this dissertation study was to find if creating a quantifiable risk detection model for the LE was feasible. The primary product of the literature review conducted for this study resulted in focusing the attention of the model development process onto creating the initial model of the LE for assessing knee disorder risk factors. Literature Review: LE occupational disorders affect numerous industries and thousands of people each year by affecting any one of the musculoskeletal systems deemed susceptible …
Contributions By Individual And Group Strategies For Organizational Learning In Architectural, Engineering, And Construction Firms, Robert Beaver
Contributions By Individual And Group Strategies For Organizational Learning In Architectural, Engineering, And Construction Firms, Robert Beaver
Electronic Theses and Dissertations
Organizations with multiple operating requirements require support functions to assist in execution of strategic goals. This effort, in turn, requires management of engineering activities in control of projects and in sustaining facilities. High level strategies include employing engineering support that consists of a project management function encompassing technical and managerial disciplines. The architecture/engineering, and construction office (AEC) is the subject of this research. Engineering and construction oriented organizations have experienced challenges to their abilities to learn and grow. This has potential detrimental implications for these organizations if support functions cannot keep pace with changing objectives and strategy. The competitive nature …
Direct Manipulation Of Virtual Objects, Long Nguyen
Direct Manipulation Of Virtual Objects, Long Nguyen
Electronic Theses and Dissertations
Interacting with a Virtual Environment (VE) generally requires the user to correctly perceive the relative position and orientation of virtual objects. For applications requiring interaction in personal space, the user may also need to accurately judge the position of the virtual object relative to that of a real object, for example, a virtual button and the user's real hand. This is difficult since VEs generally only provide a subset of the cues experienced in the real world. Complicating matters further, VEs presented by currently available visual displays may be inaccurate or distorted due to technological limitations. Fundamental physiological and psychological …