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Articles 8761 - 8790 of 13834

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

Using The Triple Bottom Line To Select Sustainable Suppliers For A Major Oil And Gas Company, Pandarinath Adarsh Sunkari May 2015

Using The Triple Bottom Line To Select Sustainable Suppliers For A Major Oil And Gas Company, Pandarinath Adarsh Sunkari

Graduate Theses and Dissertations

Companies have primarily been focusing on the financial bottom line i.e., on increasing profits by increasing revenues and reducing costs. With high energy usage and environmental change posing threats to the environment and business operations, companies are now considering sustainability. Since some global suppliers have low cost labor, Social well-being and human development has also emerged as major goals of a company performing global operations. Focusing on these three goals is termed the "Triple Bottom Line" (TBL). We study and explore the TBL benefits that could be realized by an oil and gas company by focusing on sustainable suppliers. A …


Energy Harvesting And Storage: The Catalyst To The Power Constraint For Leveraging Internet Of Things (Iot) On Trains, Kelechi Nwogu May 2015

Energy Harvesting And Storage: The Catalyst To The Power Constraint For Leveraging Internet Of Things (Iot) On Trains, Kelechi Nwogu

Department of Computer Electronics and Engineering: Dissertations, Theses, and Student Research

The success of Wireless Sensor Networks is heavily constrained by its reliance on storage technology like batteries, which are a finite resource. Whilst the number of transistors in an IC doubles every 18 months, the energy density of batteries is relatively flat during the same time period. This is a key challenge in leveraging the Internet of Things on trains.

The gravity of this problem is increased by an order of magnitude when the network is to be scaled up to hundreds or thousands of nodes. Comprehensive research and development efforts have been devoted to building ultra-low power sensors. These …


Modeling Expected Travel Distances For A Common Warehouse Design With Multiple Docks, Mahmut Tutam May 2015

Modeling Expected Travel Distances For A Common Warehouse Design With Multiple Docks, Mahmut Tutam

Graduate Theses and Dissertations

This thesis develops expected travel distance expressions for both single- and dual-command operations in a unit-load warehouse design with multiple docks. Storage racks are aligned perpendicular to the wall containing docks. Results are presented for continuous and discrete formulations. Because of the importance of how docks are located on a wall, different dock locations are investigated, including uniformly distributed docks along one wall, specified distances between adjacent docks located symmetrically about the mid-point of a warehouse wall, and any distribution of locations along one wall. Among the results obtained, we find that the width-to-depth ratio of the storage area (commonly …


Maritime Transportation Research Bank, Valeria A. Remon Perez May 2015

Maritime Transportation Research Bank, Valeria A. Remon Perez

Industrial Engineering Undergraduate Honors Theses

The maritime transportation system is an important component of the United States’ (U.S.) economy, from commerce activities to freight movement to disaster’ relief. The annual impact of the maritime transportation system on the U.S. national economy is reported as approximately $649 billion of the total U.S. gross domestic product (U.S. Department of Transportation Maritime Administration, n.d.). This impact is attributed to activities related to the movement of goods and people. Indeed, the maritime transportation system plays an important role in international trade by transporting goods such as coal and farm products, which are common commodities for foreign and domestic commerce …


Prioritizing Interdictions On A Shortest Path Network, Hayden D. Summerhill May 2015

Prioritizing Interdictions On A Shortest Path Network, Hayden D. Summerhill

Industrial Engineering Undergraduate Honors Theses

We consider a variant to the shortest path network interdiction problem with symmetric information from Israeli and Wood (Networks 40, 97-111,2002) which arises in the context of nuclear smuggling prevention. In the basic shortest path interdiction problem, an interdictor has a limited number of interdictions with which he can lengthen arcs in a network in order to maximize the length of the network’s shortest path. This thesis considers the case in which the interdictor does not make all of the interdictions at once. Rather, the interdictor must make the interdictions over a set number of periods. Each period has a …


Considerations For Introducing And Practicing Wellness In Harp Pedagogy And Performance, Alexandra Haile Calvert May 2015

Considerations For Introducing And Practicing Wellness In Harp Pedagogy And Performance, Alexandra Haile Calvert

Music Theses & Dissertations

Movement, breath, and intense focus are crucial to the playing of any musical instrument. In addition, these are important areas in many wellness methods. Many harpists are prone to injury from playing, moving their harps, sitting with poor posture, and not warming up the body before playing. By considering and incorporating the wellness practices of ergonomics, Alexander Technique, yoga, meditation, and constructing a conducive learning and practicing environment, the risk of injury may be lowered for harpists. The purpose of this study is to research and present various methods in which harpists can prevent injury. This study will assess the …


Predicting Bundles Of Spatial Locations From Learning Revealed Preference Data, Truc Viet Le, Siyuan Liu, Hoong Chuin Lau, Ramayya Krishnan May 2015

Predicting Bundles Of Spatial Locations From Learning Revealed Preference Data, Truc Viet Le, Siyuan Liu, Hoong Chuin Lau, Ramayya Krishnan

Research Collection School Of Computing and Information Systems

We propose the problem of predicting a bundle of goods, where the goods considered is a set of spatial locations that an agent wishes to visit. This typically arises in the tourism setting where attractions can often be bundled and sold as a package to visitors. While the problem of predicting future locations given the current and past trajectories is well-established, we take a radical approach by looking at it from an economic point of view. We view an agent's past trajectories as revealed preference (RP) data, where the choice of locations is a solution to an optimisation problem according …


Application Of Ergonomic Principles In Computer Workstations To Alleviate Health Risks From Extended Computer Use, John M. Awbrey Apr 2015

Application Of Ergonomic Principles In Computer Workstations To Alleviate Health Risks From Extended Computer Use, John M. Awbrey

Morehead State Theses and Dissertations

A Thesis Presented to the Faculty of the College of Science and Technology Morehead State University in Partial Fulfillment of the Requirements for the Degree Master of Science by John M. Awbrey on April 27, 2015


An Exploration Of Quality Systems In Healthcare Facilities, Tange D. Awbrey Apr 2015

An Exploration Of Quality Systems In Healthcare Facilities, Tange D. Awbrey

Morehead State Theses and Dissertations

A thesis presented to the faculty of the College of Science and Technology at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science by Tange D. Awbrey on April 27, 2015.


Design Refinement By Iterative Virtual Experimentation (D.R.I.V.E.): A Methodology To Solving Engineering Design Problems, Charles M. Watson Apr 2015

Design Refinement By Iterative Virtual Experimentation (D.R.I.V.E.): A Methodology To Solving Engineering Design Problems, Charles M. Watson

Morehead State Theses and Dissertations

A Thesis Presented to the Faculty of the College of Science & Technology Morehead State University in Partial Fulfillment of the requirements for the Degree Master of Science by Charles M. “Matt” Watson on April 25, 2015


The Development Of A Workplace Resilience Instrument, Larry Mallak Apr 2015

The Development Of A Workplace Resilience Instrument, Larry Mallak

Faculty Research and Creative Activities Award (FRACAA)

The Workplace Resilience Instrument (WRI) has the potential to provide organizations and managers a useful tool for improving workplace resilience and helping employees achieve their potential.


Oculomotor Neurocircuitry, A Structural Connectivity Study Of Infantile Nystagmus Syndrome, Nasser H. Kashou, Angelica R. Zampini Apr 2015

Oculomotor Neurocircuitry, A Structural Connectivity Study Of Infantile Nystagmus Syndrome, Nasser H. Kashou, Angelica R. Zampini

Biomedical, Industrial & Human Factors Engineering Faculty Publications

Infantile Nystagmus Syndrome (INS) is one of the leading causes of significant vision loss in children and affects about 1 in 1000 to 6000 births. In the present study, we are the first to investigate the structural pathways of patients and controls using diffusion tensor imaging (DTI). Specifically, three female INS patients from the same family were scanned, two sisters and a mother. Six regions of interest (ROIs) were created manually to analyze the number of tracks. Additionally, three ROI masks were analyzed using TBSS (Tract-Based Spatial Statistics). The number of fiber tracks was reduced in INS subjects, compared to …


Customer, Commercial And Government Value Functions For Electric Vehicle System Design, Taylan G. Topcu Apr 2015

Customer, Commercial And Government Value Functions For Electric Vehicle System Design, Taylan G. Topcu

Research Horizons Day Posters

No abstract provided.


Environmental Security Through Packaging Sustainability, Mark Betancourt Apr 2015

Environmental Security Through Packaging Sustainability, Mark Betancourt

Systems Engineering Research Projects and Oral Presentations

No abstract provided.


A Common Knowledge Engineering Framework For Data Assimilation, Correlation, And Extrapolation (Dace), Edward P. Weaver Apr 2015

A Common Knowledge Engineering Framework For Data Assimilation, Correlation, And Extrapolation (Dace), Edward P. Weaver

EMSE Doctoral Projects

The Common Knowledge Engineering Framework for Data Assimilation, Correlation, and Extrapolation (DACE) project is focused on providing a software centric general framework for advanced processing and analysis of data. This translates to researchers, scientists, engineers, and system architects not having to program a new application but rather to define the system configuration, process, and processing that is needed to perform a specific functionality. This makes the limitation of the application the end users ability to fully define the functional requirements and setup the framework accordingly.

This doctoral project will provide the details to the system definition, standards, metrics, schedule, and …


Improving Product Design Phase For Engineer To Order (Eto) Product With Knowledge Base Engineering (Kbe), Hanhdung Thi Dinh Apr 2015

Improving Product Design Phase For Engineer To Order (Eto) Product With Knowledge Base Engineering (Kbe), Hanhdung Thi Dinh

Open Access Theses

In industry currently Computer Aided Design (CAD) is an important tool for the modification, analysis, or optimization of the 3D virtual environment that replicates the physical product. CAD software is an efficient and reliable tool. However, as globalization increases customer demands, this process needs to be faster and more efficient to accommodate changing product design situations, especially for Engineer-to- Order (ETO) products. ^ The traditional method of product design process is to operate CAD software without argumentation. Design engineers create CAD prototypes and drawings based on available knowledge and information which comes from engineering experts, company standards, industrial practices as …


Conflict And Error Management: A Case In The Furniture Industry, Glenn Candranegara Apr 2015

Conflict And Error Management: A Case In The Furniture Industry, Glenn Candranegara

Open Access Theses

The purpose of this study is to investigate and provide tools for the furniture industry, for detecting and preventing damage from propagating errors. Many of the errors cascading in a furniture manufacturing facility are typically detected only after the original process that causes the error had already caused errors. Previous research has developed and validated theoretical methods, such as CEPD, to prevent and detect errors and conflicts. This thesis is the first effort to implement the logic of CEPD in the furniture industry. There are four relevant measures that are analyzed and improved in this thesis; they are preventability, reliability, …


Algorithms For Bundling And Pricing Trucking Services: Deterministic And Stochastic Approaches, Rodrigo Mesa-Arango Apr 2015

Algorithms For Bundling And Pricing Trucking Services: Deterministic And Stochastic Approaches, Rodrigo Mesa-Arango

Open Access Dissertations

Bundling and pricing trucking services is an important strategic decision for carriers. This is helpful when they consider the incorporation of new businesses to their networks, look for economic and optimal operations, and develop revenue management strategies. Reverse combinatorial auctions for trucking services are real-world examples that illustrate the necessity of such strategies. In these auctions, a shipper asks carriers for quotes to serve combinations of lanes and the carriers have to bundle demand and price it properly. This dissertation explores several dimensions of the problem employing state-of-the-art analytical tools. These dimensions include: Truckload (TL) and less-than-truckload (LTL) operations, behavioral …


Proclivity Or Popularity? Exploring Agent Heterogeneity In Network Formation, Xiaotian Wang Apr 2015

Proclivity Or Popularity? Exploring Agent Heterogeneity In Network Formation, Xiaotian Wang

Computational Modeling & Simulation Engineering Theses & Dissertations

The Barabasi-Albert model (BA model) is the standard algorithm used to describe the emergent mechanism of a scale-free network. This dissertation argues that the BA model, and its variants, rarely take agent heterogeneity into account in the analysis of network formation. In social networks, however, people's decisions to connect are strongly affected by the extent of similarity. In this dissertation, the author applies an agent-based modeling (ABM) approach to reassess the Barabasi-Albert model. This study proposes that, in forming social networks, agents are constantly balancing between instrumental and intrinsic preferences. After systematic simulation and subsequent analysis, this study finds that …


Key Factors Driving Personnel Downsizing In Multinational Military Organizations, Ilksen Gorkem Apr 2015

Key Factors Driving Personnel Downsizing In Multinational Military Organizations, Ilksen Gorkem

Engineering Management & Systems Engineering Theses & Dissertations

Although downsizing has long been a topic of research in traditional organizations, there are very few studies of this phenomenon in military contexts. As a result, we have little understanding of the key factors that drive personnel downsizing in military settings. This study contributes to our understanding of key factors that drive personnel downsizing in military organizations and whether those factors may differ across NATO nations' cultural clusters. The theoretical framework for this study was built from studies in non-military contexts and adapted to fit the military environment.

This research relies on historical data from one of the largest multinational …


Management And Leadership Style: Is Style Influenced By Engineering Education?, Jesse Levi Calloway Apr 2015

Management And Leadership Style: Is Style Influenced By Engineering Education?, Jesse Levi Calloway

Engineering Management & Systems Engineering Theses & Dissertations

This paper addresses one aspect of the opportunity for corporations to reduce leadership development infrastructure by narrowing the participant pool to candidates that, intuitively, may be multi-skilled and capable of handling diverse roles and assignments within the corporate environment. In particular, the study seeks to determine the effect that engineering education has on leadership style by comparing the leadership style of certified project managers (CPMs), and non-CPM managers with engineering degrees, to the same for CPMs, and non-CPM managers, who do not possess engineering degrees. Engineering degrees may be further defined as mechanical, electrical, industrial and the like. Leadership styles …


An Iterated Local Search Algorithm For Solving The Orienteering Problem With Time Windows, Aldy Gunawan, Hoong Chuin Lau, Kun Lu Apr 2015

An Iterated Local Search Algorithm For Solving The Orienteering Problem With Time Windows, Aldy Gunawan, Hoong Chuin Lau, Kun Lu

Research Collection School Of Computing and Information Systems

The Orienteering Problem with Time Windows (OPTW) is a variant of the Orienteering Problem (OP). Given a set of nodes including their scores, service times and time windows, the goal is to maximize the total of scores collected by a particular route considering a predefined time window during which the service has to start. We propose an Iterated Local Search (ILS) algorithm to solve the OPTW, which is based on several LocalSearch operations, such as swap, 2-opt, insert and replace. We also implement the combination between AcceptanceCriterion and Perturbation mechanisms to control the balance between diversification and intensification of the …


An Analysis Of The Relationship Between Military Leaders' Operational Adaptability And Knowledge Transfer, Vahap Kavaker Apr 2015

An Analysis Of The Relationship Between Military Leaders' Operational Adaptability And Knowledge Transfer, Vahap Kavaker

Engineering Management & Systems Engineering Theses & Dissertations

A variety of research underlines the increasing need for adaptable leaders in the military and enhancing operational adaptability is accepted as one of the crucial factors for achieving success in future military operations. In general terms, operational adaptability is the ability to successfully respond to unforeseen changing situations during military operations. However, this study reveals that operational adaptability is not clearly conceptualized and supporting factors are not investigated in detail in the literature. Among possible factors, knowledge transfer is claimed to be an important practice that increases personal performance and effectiveness.

This research conceptualized operational adaptability and investigated the relationship …


Command And Control In The Information Age: A Case Study Of A Representative Air Power Command And Control Node, Marvin Leo Simpson Jr. Apr 2015

Command And Control In The Information Age: A Case Study Of A Representative Air Power Command And Control Node, Marvin Leo Simpson Jr.

Engineering Management & Systems Engineering Theses & Dissertations

As operations command structures change, it is important to be able to explore and understand their fundamental nature; researchers should unearth the gestalt nature of the operational node. The organizational structure and the infrastructure can significantly affect overall command and control (C2) performance. Thus, it is necessary to develop understanding of effectiveness of the technical network and the people using the system as a whole.

The purpose of this research is to conduct an analysis of a representative Air Power Operational C2 node, create and use a repeatable method, and present the results as a case study to elicit fundamental …


Toward A Theory Of Multi-Method Modeling And Simulation Approach, Mariusz A. Balaban Apr 2015

Toward A Theory Of Multi-Method Modeling And Simulation Approach, Mariusz A. Balaban

Computational Modeling & Simulation Engineering Theses & Dissertations

The representation via simulation models can easily lead to simulation models too simple for their intended purpose, or with too much detail, making them hard to understand. This problem is related to limitations of the modeling and simulation methods. A multi-method Modeling and Simulation (M&S) approach has the potential for improved representation by taking advantage of methods' strengths and mitigating their weaknesses. Despite a high appeal for using multiple M&S methods, several related problems should be addressed first. The current level of theoretical, methodological, and pragmatic knowledge related to a multi-method M&S approach is limited. It is problematic that there …


Overcoming Hurdles Implementing Multi-Skilling Policies, Joshua M. Isom Mar 2015

Overcoming Hurdles Implementing Multi-Skilling Policies, Joshua M. Isom

Theses and Dissertations

Ogden ALC at Hill AFB has been authorized to promote wage grade employees if they are multi-skilled, but that authorization will expire at the end of Fiscal Year 2018. Simulation research by Capt Wesley Sheppard demonstrated significant cost savings/cost avoidance if multi-skilling is pursued, but there are significant challenges to implementation. This research examined two challenges in implementation. First, how many employees can be multi-skilled and still maintain proficiency in both skills? Second, once multi-skilled, is there a technique that can be applied to easily and effectively schedule the new multi-skilled workforce. Using linear programming, staffing numbers were calculated based …


Value Focused Thinking Applications To Supervised Pattern Classification With Extensions To Hyperspectral Anomaly Detection Algorithms, David S. Scanland Mar 2015

Value Focused Thinking Applications To Supervised Pattern Classification With Extensions To Hyperspectral Anomaly Detection Algorithms, David S. Scanland

Theses and Dissertations

Hyperspectral imaging (HSI) is an emerging analytical tool with flexible applications in different target detection and classification environments, including Military Intelligence, environmental conservation, etc. Algorithms are being developed at a rapid rate, solving various related detection problems under certain assumptions. At the core of these algorithms is the concept of supervised pattern classification, which trains an algorithm to data with enough generalizability that it can be applied to multiple instances of data. It is necessary to develop a logical methodology that can weigh responses and provide an output value that can help determine an optimum algorithm. This research focuses on …


Functionality, Complexity, And Approaches To Assessment Of Resilience Under Constrained Energy And Information, Jason B. Clark Mar 2015

Functionality, Complexity, And Approaches To Assessment Of Resilience Under Constrained Energy And Information, Jason B. Clark

Theses and Dissertations

While system functions, functionality, and complexity are widely used concepts in systems engineering, there is significant diversity in their definitions and no unified approach to measurement. This research establishes a method for measuring impacts to functionality in dynamic engineered systems based on changes in kinetic energy. This metric is applied at particular levels of abstraction and system scales, consistent with the established multiscale nature of systems. By measuring system behavior in context with expected scenarios, it is possible to estimate expected functionality or set bounds on a system's maximum functionality. Functionality and system effectiveness is heavily influenced by the amount …


Using Earned Value Data To Forecast The Duration Of Department Of Defense (Dod) Space Acquisition Programs, Shedrick M. Bridgeforth Mar 2015

Using Earned Value Data To Forecast The Duration Of Department Of Defense (Dod) Space Acquisition Programs, Shedrick M. Bridgeforth

Theses and Dissertations

The accuracy of cost estimates is vital during this era of budget constraints. A key component of this accuracy is regularly updating the cost estimate at completion (EAC). A 2014 study by the Air Force Cost Analysis Agency (AFCAA) improved the accuracy of the cost estimate at completion (EAC) for space system contracts. The study found schedule duration to be a cost driver, but assumed the underlying duration estimate was accurate. This research attempts to improve the accuracy of the duration estimate from the AFCAA study; accuracy is evaluated with the Mean Absolute Percent Error (MAPE). The methods researched here …


Modeling, Simulation, And Analysis Of A Decoy State Enabled Quantum Key Distribution System, Ryan D. Engle Mar 2015

Modeling, Simulation, And Analysis Of A Decoy State Enabled Quantum Key Distribution System, Ryan D. Engle

Theses and Dissertations

Quantum Key Distribution (QKD) is an emerging technology which uses the principles of quantum mechanics to provide unconditionally secure key distribution. QKD systems are unique in their ability to detect an eavesdropper's presence and are being marketed for applications where high levels of secrecy are required such as banking, government, and military environments. QKD systems are composed of electrical, optical, and electrooptical components. Their design requires expertise across multiple disciplines including computer science, computer engineering, electrical engineering, information theory, optical physics, and quantum physics. This multidisciplinary nature makes QKD an ideal candidate for study using Model Based Systems Engineering (MBSE) …