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Operations Research, Systems Engineering and Industrial Engineering Commons™
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Articles 1 - 13 of 13
Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering
A Framework For Safety Training Using Virtual Reality Software, Rana Riad
A Framework For Safety Training Using Virtual Reality Software, Rana Riad
Electronic Theses and Dissertations
Safety training is a vital component to the well-being of individuals in all industries. With technology advancing at the current pace, conventional training methods are no longer the most effective way to communicate information. There is a strong need for safety training that incorporates new methods and forms of communication to obtain higher levels of comprehension. Virtual reality systems offer a highly customizable and interactive form of delivering information to users. This research addresses major gaps in the field of safety training using virtual reality systems and provides a design framework for creating a virtual safety-training system. A model for …
A Macro-Level Sustainability Assessment Framework For Optimal Distribution Of Alternative Passenger Vehicles, Nuri Onat
Electronic Theses and Dissertations
Although there are many studies focusing on the environmental impacts of alternative vehicle options, social and economic dimensions and trade-off relationships among all of these impacts were not investigated sufficiently. Moreover, most economic analyses are limited to life cycle cost analyses and do not consider macro-level economic impacts. Therefore, this thesis aims to advance the Life Cycle Sustainability Assessment literature and electric vehicle sustainability research by presenting a novel combined application of Multi Criteria Decision Making techniques with Life Cycle Sustainability Assessment for decision analysis. With this motivation in mind, this research will construct a compromise-programming model (multi-objective optimization method) …
A Framework For Interoperability On The United States Electric Grid Infrastructure, Stuart Laval
A Framework For Interoperability On The United States Electric Grid Infrastructure, Stuart Laval
Electronic Theses and Dissertations
Historically, the United States (US) electric grid has been a stable one-way power delivery infrastructure that supplies centrally-generated electricity to its predictably consuming demand. However, the US electric grid is now undergoing a huge transformation from a simple and static system to a complex and dynamic network, which is starting to interconnect intermittent distributed energy resources (DERs), portable electric vehicles (EVs), and load-altering home automation devices, that create bidirectional power flow or stochastic load behavior. In order for this grid of the future to effectively embrace the high penetration of these disruptive and fast-responding digital technologies without compromising its safety, …
An Agile Roadmap For Live, Virtual And Constructive-Integrating Training Architecture (Lvc-Ita): A Case Study Using A Component Based Integrated Simulation Engine, Tae Woong Park
Electronic Theses and Dissertations
Conducting seamless Live Virtual Constructive (LVC) simulation remains the most challenging issue of Modeling and Simulation (M&S). There is a lack of interoperability, limited reuse and loose integration between the Live, Virtual and/or Constructive assets across multiple Standard Simulation Architectures (SSAs). There have been various theoretical research endeavors about solving these problems but their solutions resulted in complex and inflexible integration, long user-usage time and high cost for LVC simulation. The goal of this research is to provide an Agile Roadmap for the Live Virtual Constructive-Integrating Training Architecture (LVC-ITA) that will address the above problems and introduce interoperable LVC simulation. …
An Investigation Of Physiological Measures In A Marketing Decision Task, Nelson Lerma
An Investigation Of Physiological Measures In A Marketing Decision Task, Nelson Lerma
Electronic Theses and Dissertations
The objective of the present study was to understand the use of physiological measures as an alternative to traditional market research tools, such as self-reporting measures and focus groups. For centuries, corporations and researchers have relied almost exclusively on traditional measures to gain insights into consumer behavior. Oftentimes, traditional methods have failed to accurately predict consumer demand, and this has prompted corporations to explore alternative methods that will accurately forecast future sales. One the most promising alternative methods currently being investigated is the use of physiological measures as an indication of consumer preference. This field, also referred to as neuromarketing, …
Modeling Dense Storage Systems With Location Uncertainty, Mohamed Awwad
Modeling Dense Storage Systems With Location Uncertainty, Mohamed Awwad
Electronic Theses and Dissertations
This dissertation focuses on developing models to study the problem of searching and retrieving items in a dense storage environment. We consider a special storage configuration called an inverted T configuration, which has one horizontal and one vertical aisle. Inverted T configurations have fewer aisles than a traditional aisle-based storage environment. This increases the storage density; however, requires that some items to be moved out of the way to gain access to other more deeply stored items. Such movement can result in item location uncertainty. When items are requested for retrieval in a dense storage environment with item location uncertainty, …
The Relationship Between Dna's Physical Properties And The Dna Molecule's Harmonic Signature, And Related Motion In Water--A Computational Investigation, Victor Boyer
Electronic Theses and Dissertations
This research investigates through computational methods whether the physical properties of DNA contribute to its harmonic signature, the uniqueness of that signature if present, and motion of the DNA molecule in water. When DNA is solvated in water at normal 'room temperature', it experiences a natural vibration due to the Brownian motion of the particles in the water colliding with the DNA. The null hypothesis is that there is no evidence to suggest a relationship between DNA's motion and strand length, while the alternative hypothesis is that there is evidence to suggest a relationship between DNA's vibrational motion and strand …
The Effects Of Chronic Sleep Deprivation On Sustained Attention: A Study Of Brain Dynamic Functional Connectivity, Yiling He
Electronic Theses and Dissertations
It is estimated that about 35-40% of adults in the U.S. suffer from insufficient sleep. Chronic sleep deprivation has become a prevalent phenomenon because of contemporary lifestyle and work-related factors. Sleep deprivation can reduce the capabilities and efficiency of attentional performance by impairing perception, increasing effort to maintain concentration, as well as introducing vision disturbance. Thus, it is important to understand the neural mechanisms behind how chronic sleep deprivation impairs sustained attention. In recent years, more attention has been paid to the study of the integration between anatomically distributed and functionally connected brain regions. Functional connectivity has been widely used …
Propagation Of Unit Location Uncertainty In Dense Storage Environments, Patrick Reilly
Propagation Of Unit Location Uncertainty In Dense Storage Environments, Patrick Reilly
Electronic Theses and Dissertations
Effective space utilization is an important consideration in logistics systems and is especially important in dense storage environments. Dense storage systems provide high-space utilization; however, because not all items are immediately accessible, storage and retrieval operations often require shifting of other stored items in order to access the desired item, which results in item location uncertainty when asset tracking is insufficient. Given an initial certainty in item location, we use Markovian principles to quantify the growth of uncertainty as a function of retrieval requests and discover that the steady state probability distribution for any communicating class of storage locations approaches …
Body Mass Bias Mitigation For Females In Military Physical Readiness Testing Through Load Carriage Implementation, Aaron Yeaton
Body Mass Bias Mitigation For Females In Military Physical Readiness Testing Through Load Carriage Implementation, Aaron Yeaton
Electronic Theses and Dissertations
The US Military requires specific fitness testing, known as the Physical Readiness Test (PRT), for its members to determine their overall fitness levels. The test currently being used has been shown to have bias towards heavier mass individuals of up to 20%. Prior research has been completed and several recommendations have been made to eliminate mass bias, but this has been conducted almost exclusively on males. There is very little data and research on military physical fitness testing for women besides combat specific evolution exercises. A possibility exists to eliminate the bias for females through implementing load carriage during PRT …
A New Paradigm Integrating Business Process Modeling And Use Case Modeling, Barclay Brown
A New Paradigm Integrating Business Process Modeling And Use Case Modeling, Barclay Brown
Electronic Theses and Dissertations
The goal of this research is to develop a new paradigm integrating the practices of business process modeling and use case modeling. These two modeling approaches describe the behavior of organizations and systems, and their interactions, but rest on different paradigms and serve different needs. The base of knowledge and information required for each approach is largely common, however, so an integrated approach has advantages in efficiency, consistency and completeness of the overall behavioral model. Both modeling methods are familiar and widely used. Business process modeling is often employed as a precursor to the development of a system to be …
Modeling And Analysis Of Automated Storage And Retrievals System With Multiple In-The-Aisle Pick Positions, Faraz Ramtin
Modeling And Analysis Of Automated Storage And Retrievals System With Multiple In-The-Aisle Pick Positions, Faraz Ramtin
Electronic Theses and Dissertations
This dissertation focuses on developing analytical models for automated storage and retrieval system with multiple in-the-aisle pick positions (MIAPP-AS/RS). Specifically, our first contribution develops an expected travel time model for different pick positions and different physical configurations for a random storage policy. This contribution has been accepted for publication in IIE Transactions (Ramtin & Pazour, 2014) and was the featured article in the IE Magazine (Askin & Nussbaum, 2014). The second contribution addresses an important design question associated with MIAPP-AS/RS, which is the assignment of items to pick positions in an MIAPP-AS/RS. This contribution has been accepted for publication in …
A Study On The Analyzing Priority Of Limiting Factors In Live, Virtual, And Constructive (Lvc) Simulation Interoperability Using Analytic Hierarchy Process (Ahp) Method, Youngkun Yoo
Electronic Theses and Dissertations
Each Live, Virtual, and Constructive (LVC) simulation model has been developed and used with many benefits. When system developers created each simulation model, focused on specific standards to fit to their own respective purposes. Consequently, there have been interoperability issues among simulation models that have many limitations. To be specific, despite various efforts to achieve and maintain complete interoperability in LVC simulation environment, substantial limiting factors have remained in technical and managerial fields. Thus, analyzing and prioritizing limiting factors in LVC simulation is the effective way to solve interoperability problems while saving budget and time. The purpose of this research …