Index Catalog // GW ScholarSpace

Expert Judgment Model to Assess Cyber-Attack Scenarios on Enterprise Architectures

Description:: Cyber-attackers exploit people, processes, and technologies to steal high-value organizational data. The corresponding attacks are complex, cost organizations millions of dollars to resolve, and require rapid-response, architecture-based mitigation. Consequently, Cybersecurity strategies that...
Author:: Myauo, Michele
Keyword:: Cybersecurity, Cyber-Attack, Enterprise Architecture, Portfolio Management, Expert Judgment, and Systems Engineering
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Mazzuchi, Thomas A and Sarkani, Shahram
Committee Member(s):: Murphree, E. Lile, Bischoff, John, and Holzer, Thomas
Resource Type:: Thesis or Dissertation

Identification of Supply Chain Cost Drivers in Primary Care in the United States

Description:: Over the last decade, healthcare supply chain (SC) costs have increased by 40 percent in the United States. A typical hospital’s SC costs account for 38 percent of the total, compared to less than 10 percent for most industries. Supply chain costs are the healthcare organizations’ second biggest...
Author:: Essila Mvogo, Jean Clement
Keyword:: Supply chain management, Healthcare supply chain cost drivers, Regression analysis, Primary care supply chain, and Cost drivers
GW Unit:: Engineering Management
Degree:: D.Engr.
Advisor:: Eggstaff, Justin and Islam, Muhammad F
Committee Member(s):: Etemadi, Amir, Eggstaff, Justin, Murphree, E. Lile, Hardie, Daniel D, and Islam, Muhammad F
Resource Type:: Thesis or Dissertation

The Evaluation of Symptomatic and Latent Failure Causal Factors in Complex Socio-technical Systems

Description:: Human error remains the highest symptomatic cause of system failure across multiple domains. Technology failure has seen a significant rate decrease through analyses and design changes, but human error causal factors have not experienced the same level of improvement. Designers and developers...
Author:: Erjavac, Anthony John
Keyword:: Latent cause, Causal Analysis, Symptomatic cause, Human error, and Human system integration
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Iammartino, Ronald and Fossaceca, John M.
Committee Member(s):: Murphree, E. Lile, Sarkani, Shahram, Eveleigh, Timothy, and Mazzuchi, Thomas A.
Resource Type:: Thesis or Dissertation

Spare Parts Model for Additive Manufacturing

Description:: Spare parts models have typically focused on the number of spares physically required to maintain system availability and optimize replacement policies, such as block or age replacement and variants thereof. In an era where additive manufacturing (AM), or 3D printing, as it is popularly known,...
Author:: Togwe, Thembani
Keyword:: project management, project planning/assessment/control, logistics and supportability, transition/operation/maintenance, supply chain, and systems engineering
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Eveleigh, Timothy J and Tanju, Bereket
Committee Member(s):: Etemadi, Amir, Murphree, E. Lile, Sarkani, Shahram, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

A Robust System Maturity Model Using Petri Nets

Description:: Immature systems can be plagued by high costs, high risks, and schedule delays. System maturity models are utilized to quantitatively analyze a system’s readiness to indicate whether the system is prepared to proceed to the next acquisition phase during development. Most system maturity models...
Author:: Thal, Brent
Keyword:: petri net system readiness level (PNSRL), system maturity, and systems engineering
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Olson, Bill and Blessner, Paul
Committee Member(s):: Olson, Bill, Etemadi, Amir, Murphree, E. Lile, Eveleigh, Timothy, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

Reduction of Railway System Failures through Technical Uncertainty Analysis

Description:: Since the opening of the Washington Metropolitan Transit Authority (WMATA) in 1976, failures have negatively affected consistent railway service across the areas. Over the last three years, WMATA has attempted increase efforts to perform critical maintenance that would increase performance and...
Author:: Barber, Tony Donell
Keyword:: Technical Failures, Reliability Engineering, Systems Analysis, Technical Uncertainty, Decision Analysis, and Systems Engineering
GW Unit:: Engineering Management
Degree:: D.Engr.
Advisor:: Olson, Bill and Blessner, Paul
Committee Member(s):: Olson, Bill, Blessner, Paul, Etemadi, Amir, Murphree, E. Lile, and MacCarthy, John
Resource Type:: Thesis or Dissertation

Development of an Adjustment Factor for Improving Software Effort Estimation Utilizing the Use Case Point Method

Description:: This Praxis describes a method for improving the accuracy of Use Case Point (UCP) effort estimation for software development projects. The thesis for the research is that an emergent factor exists in software development projects that is not considered in the UCP process. This emergent factor is...
Author:: Herriman, Rory Allen
Keyword:: Software Productivity, Software Development, Software Estimation, Use Case Point, Software Labor, and Software Optimization
GW Unit:: Engineering Management
Degree:: D.Engr.
Advisor:: Guillaume-Joseph, Gina and Gideon, Alan K
Committee Member(s):: Etemadi, Amir, Guillaume-Joseph, Gina, Murphree, E. Lile, Gideon, Alan K, and Partridge, Ronald
Resource Type:: Thesis or Dissertation

Renewable Energy Implementation Analysis and Recommendations to Meet District of Columbia’s Renewable Portfolio Standard (RPS) Expansion Act

Description:: Due to federal mandates, there is an increasing demand to advance renewable energy in the District of Columbia (D.C.) to deliver power. Utilities must find ways to achieve objectives while avoiding costly alternative compliance payments. In 2016, the District of Columbia’s Renewable Portfolio...
Author:: DuBrey, Stephen
Keyword:
GW Unit:: Engineering Management
Degree:: D.Engr.
Advisor:: Guillaume-Joseph, Gina
Committee Member(s):: Gideon, Alan, Murphree, E. Lile, and Etemadi, Amir
Resource Type:: Thesis or Dissertation

Improving Recovery Time of Children Missing from State Care Using Quantitative Analysis Techniques

Description:: Locating children missing from state care quickly is critical for their safety and overall wellbeing. This research was conducted to evaluate the time it takes to establish the team of teams, or human systems of system, to search for a missing child. Specifically, the time it takes for social...
Author:: Bischoff, John Edward
Keyword:: Engineering Management, Team design, Knowledge Management, and Missing
GW Unit:: Engineering Management
Degree:: D.Engr.
Advisor:: Guillaume-Joseph, Gina
Committee Member(s):: Gideon, Alan K., Lowery, Robert G., Etemadi, Amir, and Murphree, E. Lile
Resource Type:: Thesis or Dissertation

Maturity Based Cybersecurity Investment Decision Making in Developing Nations

Description:: The future of developing nations – both in terms of opportunities and challenges – is tied to the security of the information communications and technology (ICT) infrastructure. As many developing nations increase reliance on ICT to enable economic growth, they fail to commit an equivalent level...
Author:: Garlock, Kevin
Keyword:: Cybersecurity, Developing Nations, Cybersecurity maturity, and Cybersecurity Investments
GW Unit:: Engineering Management
Degree:: D.Engr.
Advisor:: Gideon, Alan and Guillaume-Joseph, Gina
Committee Member(s):: Gideon, Alan, Guillaume-Joseph, Gina, Murphree, E. Lile, Lark, Philip, and Etemadi, Amir
Resource Type:: Thesis or Dissertation

An Exploratory Study to Identify Critical Success Factors of Agile Systems Engineering

Description:: With latest IT trends in the industry, choosing the appropriate systems engineering methodology aligned with the project and team characteristics is often a challenge for project leads. The endorsement of Agile methods in systems engineering is no exception. Agile systems engineering is an...
Author:: Syeda, Sadia
Keyword:: Project Management, Critical Success Factors, Agile Systems Engineering, and Mann-Whitney U test
GW Unit:: Engineering Management
Degree:: D.Engr.
Advisor:: Doskey, Steven and Moreland, James
Committee Member(s):: Etemadi, Amir, Malik, Zain, Murphree, E. Lile, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

Predict Insider Threats Using LRM

Description:: Insider threats are one of the most damaging threats to modern systems. The ubiquity of cybersecurity problems related to insider threats promoted various solutions over the years. However, effective solutions are undermined by mathematical algorithms and host-based event driven techniques that...
Author:: Mills, Jennifer U.
Keyword:: Cybersecurity, Insider Threats, Logistic Regression, and Systems Engineering
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Dever, Jason and Stuban, Steven
Committee Member(s):: Dever, Jason, Murphree, E. Lile, Stuban, Steven, Sarkani, Shahram, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

Team Collaboration as a System of Systems Agent-Based Model

Description:: There is a current need to study and understand the behaviors and characteristics of systems of systems. Studying a single system is relatively straightforward when compared to studying a system of systems. A system of systems has unique characteristics that distinguish it from a single system....
Author:: Torres, Edwin Ross
Keyword:: basketball, simulation, system of systems, NetLogo, systems engineering, and agent-based modeling
GW Unit:: Engineering Management
Degree:: D.Engr.
Advisor:: Bischoff, John E and Willy, Christopher J
Committee Member(s):: Etemadi, Amir, Riehl, Mark R, and Murphree, E. Lile
Resource Type:: Thesis or Dissertation

Finding Determinants for Optimizing System Development Planning and Acquisition Strategies using Linear Discriminant Analysis

Description:: Complexity in systems acquisition can be characterized by descriptors in a system’s architecture that portray interrelationships and interdependencies, technology readiness levels, test and evaluation, integration, and technical requirements, lifecycle support and other factors. Well known...
Author:: Mills, Hugh
Keyword:: Multivariate Analysis, Data Analysis, Project Management, Space Technology, Discriminant Analysis, and Program Management
GW Unit:: Engineering Management
Degree:: D.Engr.
Advisor:: Moreland Jr., James D. and Doskey, Steven
Committee Member(s):: Hunt, Charles D., Moreland Jr., James D., Murphree, E. Lile, Doskey, Steven, and Etemadi, Amir
Resource Type:: Thesis or Dissertation

“Requirements Recommender": A Proposed Framework for the Use of Multiple Criteria Recommender Systems in Requirements Engineering of Sustainment Software Projects

Description:: Current techniques in the development of system requirements include brainstorming, interviews, and prototyping. These techniques can be time consuming, and requirements gained from these techniques rarely meet the needs of users. Reworking requirements can be quite costly. Discrepancies in...
Author:: Agbedia, Crystal
Keyword:: recommender systems, Requirements Engineering, multiple criteria decision making, and Requirements Elicitation
GW Unit:: Systems Engineering
Degree:: D.Engr.
Advisor:: Olson, Bill
Committee Member(s):: Buntin, Charles and Murphree, E. Lile
Resource Type:: Thesis or Dissertation

A Methodology Towards Security Effectiveness for Critical Infrastructure and Dependent Resources

Description:: A successful Denial of Service (DoS) attack on a Critical Infrastructure (CI) can indirectly have devastating and irreversible effects to those that depend on its services. The mere possibility that physical destruction or loss of human life can result (indirectly) from a successful attack on a...
Author:: White, Latechia
Keyword:: Security effectiveness, Bayesian Analysis, Critical infrastructure, Risk, Resiliency, and Disaster management
GW Unit:: Systems Engineering
Degree:: D.Engr.
Advisor:: Tanju, Barry and Eveleigh, Timothy
Committee Member(s):: Tanju, Barry, Etemadi, Amir, Murphree, E. Lile, Eveleigh, Timothy, and Ezell, Barry
Resource Type:: Thesis or Dissertation

Using a Cognitive Variable Framework Derived from Systems Dynamics to Develop Options for Addressing the Performance of Human Queues

Description:: The human brain has been modeled using the cognitive cycle, a continuous loop of detection, interpretation, and action which guides decision-making and task performance. In human-driven queues, these elements can affect queuing performance. However, increasing the number of servers is the...
Author:: Smith, April
Keyword:: behavioral operations research, simulation, cognitive cycle, and multi-server queues
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Dever, Jason and Stuban, Steven M F
Committee Member(s):: Etemadi, Amir, Malalla, Ebrahim, Murphree, E. Lile, and Stuban, Steven M F
Resource Type:: Thesis or Dissertation

Using System Dynamics Modeling to Understand the Impact of Federal Constraints in Implementing the Agile Methodology within the U.S. Federal Government

Description:: The agile methodology is the incremental, continuous development and delivery of software, providing a continuous stream of software solutions that meet the customer’s needs. The U.S. federal government has realized the advantages of this methodology and has decided to utilize this methodology in...
Author:: Capili, Roderick De Leon
Keyword:: Agile, Government, System, Software, Federal, and Systems Engineering
GW Unit:: Engineering Management
Degree:: D.Engr.
Advisor:: Guillaume-Joseph, Gina
Committee Member(s):: Gideon, Alan, Murphree, E. Lile, Farquhar, Bruce, and Etemadi, Amir
Resource Type:: Thesis or Dissertation

Exploring a Threat-focused Acquisition Methodology using Multi-Criteria Decision Methods to increase delivery-cycles for Information and Cyber-related Capabilities

Description:: The use of information has dramatically changed over the past decade. In addition to traditional cyber-attacks, there has been an increase in the use of social-media to spread misinformation and opinion through the internet. The United States Department of Defense (DOD) is actively developing...
Author:: Wilson, Jeffery Dwane
Keyword:: sensitivity analysis, TOPSIS, DOD Acquisition, and multi-criteria decision making
GW Unit:: Engineering Management
Degree:: D.Engr.
Advisor:: Doskey, Steven and Moreland, James
Committee Member(s):: Cirillo, Michael, Etemadi, Amir, and Murphree, E. Lile
Resource Type:: Thesis or Dissertation

Mitigating Systems Obsolescence Using Multi-Criteria Decision Methods

Description:: Advances in technology have caused many systems to be plagued by obsolescence, which has operational, logistic, reliability, and cost implications. Proactively managing obsolescence is pivotal to its mitigation in mission systems. An important aspect of proactive obsolescence management is...
Author:: Adetunji, Oluwatomi O.
Keyword:: Simulations, Systems Engineering/Engineering Management, Decision Analysis/Management, Operations Research, Logistics/Supportability, and Obsolescence/DMSMS
GW Unit:: Systems Engineering
Degree:: D.Engr.
Advisor:: Willy, Christopher and Bischoff, John
Committee Member(s):: Etemadi, Amir, Murphree, E. Lile, Sarkani, Shahram, Snyder, James, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

A New Integration-Difficulty Metric for Assessing the Integration of Independent Systems

Description:: This thesis solves a systems-engineering problem of quantifying what amount of integration is reasonable, prior to initiating a project to develop an integrated system. Systems-integration is a later engineering activity, most difficult to perform, often a large consumer of resources, and can be...
Author:: Nueslein, Michael David
Keyword:: Integration Metric, System of Systems, Complex Systems, Systems Engineering, Systems Integration, and Modularity
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Eisner, Howard
Committee Member(s):: Stankosky, Michael A, Hybertson, Duane W, Murphree, E. Lile, and Duffey, Michael R
Resource Type:: Thesis or Dissertation

REDUCING HUMAN/PILOT ERROR IN AVIATION USING AUGMENTED COGNITION AND AUTOMATION SYSTEMS IN AIRCRAFT COCKPIT

Description:: The majority of aviation accidents are caused by human error. Augmentedcognition and automation systems enhance pilot performance by evaluatingsystem limitations and flight precision and performance. This study examines thehuman-machine interface in cockpit design using the tenets of...
Author:: Naranji, Ehsan
Keyword:: Automation in Aviation, Human Factors in Aviation, Human-Machine Integration, Aviation Accidents, Augmented Cognition, and Systems Engineering
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahram and Mazzuchi, Thomas A.
Committee Member(s):: Murphree, E. Lile, Willy, Christopher, Sarkani, Shahram, Bischoff, John, and Mazzuchi, Thomas A.
Resource Type:: Thesis or Dissertation

A First Order Approach to Optimizing Storage As A Service

Description:: Cloud computing service providers are currently viewed as innovative solutions to the global need for massive data systems because of their superior flexibility, scalability, and cost benefits. Cloud computing enabled by virtualized services is still constrained, however, by the capacities of the...
Author:: Timmons, Anita Lynette
Keyword:: Design of Experiments, Response Surface Methodology, Cloud Computing, Surface Plots, Storage, and Information Technology
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Fomin, Pavel
Committee Member(s):: Stuban, Steven M.F., Murphree, E. Lile, Sarkani, Shahram, and Mazzuchi, Thomas A.
Resource Type:: Thesis or Dissertation

Re-examination of the Enterprise Resource Planning Success Model in Cross Industry Sectors: New Statistical Findings

Description:: This dissertation sought to answer the question of why and how organizations succeed or fail in their implementation of the Enterprise Resource Planning (ERP) system. To accomplish this goal, reexamining and recalibrating the Chung (2007) ERP Success Model with the data from various industry...
Author:: Lee, Sangmin
Keyword:: ERP, Enterprise Resource Planning, ERP Cross-Industry, and ERP Success Model
GW Unit:: Engineering Management
Degree:: Ph.D.
Advisor:: Ryan, Julie J.C.H. and Mazzuchi, Thomas A.
Committee Member(s):: Deason, Jonathan P., Murphree, E. Lile, and Kim, Young J.
Resource Type:: Thesis or Dissertation

Modeling Team-Compatibility Factors Using a Semi-Markov Decision Process: A Framework for Performance Analysis in Soccer

Description:: Soccer is the most popular sport worldwide. Over time, the importance of soccer has grown beyond the sports domain, making it a large industry, a source of national pride, and the center of public attention in most countries. Due to this increased significance, it is highly important for soccer...
Author:: Jarvandi, Ali
Keyword:: Data, Soccer, Modeling, Markov, Simulation, and Sports
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahram and Mazzuchi, Thomas
Committee Member(s):: Murphree, E. Lile, Sarkani, Shahram, Mazuuchi, Thomas, Tanju, Bereket, and Fomin, Pavel
Resource Type:: Thesis or Dissertation

Analyzing Complex Systems Using an Integrated Multi-scale Systems Approach

Description:: Many industries, such as healthcare, transportation, education, and other fields that involve large corporations and institutions, are complex systems composed of many diverse interacting components. Frequently, to improve performance within these industries, to move into new markets, or to...
Author:: Ravitz, Alan D.
Keyword:: Multi-scale Modeling and Simulation, Systems Approach, Complex Systems, and Systems Engineering
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahram and Mazzuchi, Thomas A.
Committee Member(s):: Blackburn, Timothy, Murphree, E. Lile, and Stuban, Steven
Resource Type:: Thesis or Dissertation

The Impact of Human Systems Integration on Major Defense Acquisition Program Success

Description:: This investigative study demonstrated the benefits of addressing human considerations during the system development life cycle in order to have had long-term benefits to program managers and systems engineers. The approach was to use a retrospective content analysis of documents from weapon...
Author:: Algarin, Liana
Keyword:: life cycle cost, Human Systems Integration, schedule, and weapon system acquisition
GW Unit:: Systems Engineering
Degree:: D.Sc.
Advisor:: Sarkani, Shahram and Mazzuchi, Thomas A.
Committee Member(s):: Murphree, E. Lile, Sarkani, Shahram, Tanju, Bereket, Wasek, James, and Mazzuchi, Thomas A.
Resource Type:: Thesis or Dissertation

A System Dynamics Approach to Understanding the Long-Term Effects of Requirement Changes and Unit Quantity Changes during DoD Acquisition

Description:: Cost overruns within the Department of Defense (DoD) acquisitions are widespread and have come to be accepted by program managers as a daunting challenge. A study of 35 major defense acquisition programs has identified requirement changes and unit quantity changes as the two main decision factors...
Author:: Shin, Daniel
Keyword:: Requirement Changes, Unit Quantity Changes, System Dynamics, Cost Overrun, and DoD Acquisition
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Wasek, James S and Fomin, Pavel
Committee Member(s):: Murphree, E. Lile, Wasek, James S, Tanju, Bereket, Mazzuchi, Thomas, and Sarkani, Shahram
Resource Type:: Thesis or Dissertation

The Association of Knowledge Management and Project Management: An Enterprise-wide Approach Based on Stankosky’s Four Pillar of Knowledge Management and PMI’s Project Management Knowledge Areas

Description:: There are few studies investigating the association between enterprise-level knowledge management (KM) and project management (PM). Though few, these research studies have demonstrated that the available PM methods and approaches do not adequately include the necessary processes to derive maximum...
Author:: Oun, Tariq Ahmed
Keyword:: Performance measures, Project management, Project management knowledge areas, Knowledge management, and Project success
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Blackburn, Timothy D. and Olson, Bill A.
Committee Member(s):: Mazzuchi, Thomas Andrew, Murphree, E. Lile, and Sarkani, Shahram
Resource Type:: Thesis or Dissertation

Leveraging Biologically Inspired Models for Cyber-Physical Systems Analysis

Description:: Cyber-physical systems (CPS) are systems composed of distributed sensors, physical actuators and controlling computers that are interconnected through a computer network. Notable examples include: electric utility “smart grids” that can sense and optimize power distribution, transportation...
Author:: Keller, Keith Loren
Keyword:: complex systems, cyber–physical systems, bioinspired engineering, genetic algorithms, robotics, and multiobjective optimization
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Roncace, Robert A. and Sarkani, Shahram
Committee Member(s):: Roncace, Robert A., Murphree, E. Lile, Doskey, Steven, Sarkani, Shahram, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

Tailoring a Large Organization’s Systems Engineering Process to Meet Project-Specific Needs

Description:: Systems engineers are faced with the challenge of adhering to broad systems engineering policies, while simultaneously tailoring systems engineering processes to meet the unique challenges facing their projects. Tailoring is often performed ad hoc, and determining which stages, steps, and...
Author:: Graviss, Matthew
Keyword:: Process Tailoring and Systems Engineering
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahram and Mazzuchi, Thomas
Committee Member(s):: Dever, Jason, Murphree, E. Lile, Stuban, Steven, Sarkani, Shahram, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

Quality by Design (QbD) and Production System Fundamental Sigma Limits with a Pharmaceutical Industry Example

Description:: Quality by Design (QbD) has been recognized as a superior manufacturing approach versus attempting to test in quality. Without designing for quality, the level of quality attainment (defect-free product) has been observed to plateau well short of six sigma, and efforts to further improve quality...
Author:: Blackburn, Timothy Dean
Keyword:: S-Curves, Six Sigma, QbD, Systems Engineering, Fundamental Limits, and TRIZ
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Mazzuchi, Thomas A and Sarkani, Shahram
Committee Member(s):: Murphree, E. Lile, Eveleigh, Timothy, and Holzer, Thomas H.
Resource Type:: Thesis or Dissertation

Beyond Integration Readiness Level (IRL): A Multidimensional Framework to Facilitate the Integration of System of Systems

Description:: Integration Readiness Level (IRL) can be an effective systems engineering tool to facilitate integration of System of Systems (SoS). Further research in systems integration, analysis of major SoS integration data, and analysis of expert survey inputs to SoS integration can enhance the current IRL...
Author:: Eder, Clarence
Keyword:: Technology Readiness Level (TRL), DoD Space Systems, System of Systems (SoS), Integration Readiness Level (IRL), Systems Integration, and Department of Defense
GW Unit:: Systems Engineering
Degree:: D.Engr.
Advisor:: Mazzuchi, Thomas A and Sarkani, Shahram
Committee Member(s):: Olson, Bill, Blessner, Paul, Mazzuchi, Thomas A, Murphree, E. Lile, and Sarkani, Shahram
Resource Type:: Thesis or Dissertation

Software System Selection based on First-Order Security Risk Assessment

Description:: Often, multiple software products exist on the same server and vulnerability in one product compromises the entire system. It is imperative then, to perform a security risk assessment when selecting the software products that will become part of a larger system. Having a quantitative security...
Author:: Das, Ruma
Keyword:: Software Selection, Topic Model, and Risk Assessment
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahram and Mazzuchi, Thomas
Committee Member(s):: Fomin, Paul, Murphree, E. Lile, and Wasek, James
Resource Type:: Thesis or Dissertation

Modeling Mass Collaboration Networks to Investigate Innovation Drivers and Manage Innovation Potential

Description:: There is a paucity of research that empirically substantiates the theories presented in innovation driver literature to real-world user innovation networks. Trending hackathon-style mass collaboration events provide a microcosm in which to observe innovation as it happens. NASA’s International...
Author:: Senghore, Fatima
Keyword:: mass collaboration, affiliation networks, systems engineering, user innovation networks, user innovation, and social network analysis
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Wasek, James
Committee Member(s):: Blessner, Paul, Murphree, E. Lile, Sarkani, Shahram, Mazzuchi, Thomas, and Wasek, James
Resource Type:: Thesis or Dissertation

Marine Hydrokinetic (MHK) systems: A systems engineering approach to select locations for the practical harvest of electricity from shallow water tidal currents

Description:: Due to increasing atmospheric CO2 concentration and its effect on global climates, the United States Environmental Protection Agency (EPA) proposes a Clean Power Plan (CPP) mandating CO2 reductions which will likely force the early retirement of inefficient, aging power plants. Consequentially,...
Author:: Domenech, John S
Keyword:: marine hydrokinetic energy, turbine efficiency, electricity from tidal currents, and tidal currents
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahram
Committee Member(s):: Murphree, E. Lile, Doskey, Steven, Eveleigh, Timothy, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

Use of Multi-Fidelity and Surrogate Models to Reduce the Cost of Developing Physics-Based Systems

Description:: Building complex physics-based systems in a timely cost-effective manner, that perform well, meet diverse user needs, and have no bad emergent behaviors is a challenge. To meet these requirements the solution is to model the physics-based system before building it. Modeling and Simulation...
Author:: Hebert, James Leland
Keyword:: Models, Surrogate Models, Systems Engineering, Kriging, FDTD, and Multi-Fidelity
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahryar and Eveleigh, Timothy
Committee Member(s):: Murphree, E. Lile, Sarkani, Shahryar, Sarkani, Shahram, Eveleigh, Timothy, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

Systems Engineering Knowledge Asset (SEKA) Management for Higher Performing Engineering Teams: People, Process and Technology toward Effective Knowledge-Workers

Description:: Systems engineering teams' value-creation for enterprises is slower than possible due to inefficiencies in communication, learning, common knowledge collaboration and leadership conduct. This dissertation outlines the surrounding people, process and technology dimensions for higher performing...
Author:: Shelby Jr., Kenneth R.
Keyword:: High Performance Engineering Teams, Effective Knowledge Workers, and Systems Engineering Knowledge Asset Management
GW Unit:: School of Engineering and Applied Science
Degree:: Ph.D.
Advisor:: Mazzuchi, Thomas A and Sarkani, Shahram
Committee Member(s):: Murphree, E. Lile, Tanju, Bereket, and Fomin, Pavel
Resource Type:: Thesis or Dissertation

Self-organization and Sense-making in Architect-Engineer Design Teams: Leveraging Health Care’s Approach to “Managing” Complex Adaptive Systems

Description:: Traditional, corporate-level risk mitigation procedures and management-led performance improvement efforts tend to ignore the relationship dynamics of Architect-Engineer design teams, and instead focus on the credentials and abilities of the individual designers, the contractual framework...
Author:: Sprauer, William A.
Keyword:: Adaptive, Self-organization, Sense-making, Architect-Engineer, Complex, and Systems
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Blackburn, Timothy D.
Committee Member(s):: Murphree, E. Lile, Stuban, Steven, Sarkani, Shahram, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

Risk Matrix Analysis Using Copulas

Description:: In this research, a framework is developed to determine the best design of risk matrices based on Cox's (2008) approach, where the performance of a risk matrix is evaluated through the probability of elimination error value. The development of research requires extension of Cox's (2008) approach...
Author:: Hong, Xing
Keyword:: copula, qualitative risk analysis, and risk matrix
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Mazzuchi, Thomas A.
Committee Member(s):: Soyer, Refik, Van Dorp, Johan R., Shaw, Gregory L., and Murphree, E. Lile
Resource Type:: Thesis or Dissertation

Validating the Use of Performance Risk Indices for System-Level Risk and Maturity Assessments

Description:: With pressure on the U.S. Defense Acquisition System (DAS) to reduce cost overruns and schedule delays, system engineers’ performance is only as good as their tools. Recent literature details a need for 1) objective, analytical risk quantification methodologies over traditional subjective...
Author:: Holloman, Sherrica
Keyword:: Project Management, Maturity Assessments, System Performance, Risk Management, Performance Risk Index, and Systems Engineering
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Stuban, Steven M. F.
Committee Member(s):: Blackburn, Timothy, Murphree, E. Lile, Sarkani, Shahram, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

Assessing the Probability of Prototyping Success in Systems Acquisitions (APOPS)

Description:: In a 2007 memorandum, John Young, Under Secretary of Defense at that time, mandated the use of “competitive prototyping” strategies prior to the System Design and Development phase (Young, 2007). Department of Defense Instruction 5000.02 also includes considerations for prototyping in the...
Author:: Medlej, Maroun
Keyword:: Defense Acquisition, Program success, Prototyping, Systems Engineering, and Prototype
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Dever, Jason and Stuban, Steven M. F.
Committee Member(s):: Dever, Jason, Stuban, Steven M. F., Murphree, E. Lile, Sarkani, Shahram, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

The Effect of Mission Assurance on ELV Launch Success Rate: An Analysis of Two Management Systems for Launch Vehicles

Description:: There are significant challenges involved in regulating the growing commercial human spaceflight industry. The safety of the crew and passengers should be protected; however, care should be taken not to overburden the industry with too many or too stringent, or perhaps inapplicable,...
Author:: Leung, Raymond
Keyword:: FAA, Human Spaceflight, Mission Assurance, and NASA
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Mazzuchi, Thomas A and Sarkani, Shahram
Committee Member(s):: Dever, Jason, Murphree, E. Lile, and Bischoff, John
Resource Type:: Thesis or Dissertation

A Framework for Implementing Systems Engineering Measures at Technical Reviews and Audits

Description:: Systems engineering measurements provide the decision maker a method to effectively manage uncertainty throughout the systems engineering lifecycle including entrance into key project milestones. Premature transition through project milestones or decision gates is likely to lead to cost and...
Author:: Orlowski, Christian T.
Keyword:: Metrics, Technical reviews, Risk management, Systems engineering, Measurement, and Leading indicators
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Blackburn, Timothy D. and Blessner, Paul L.
Committee Member(s):: Murphree, E. Lile, Sarkani, Shahram, Olson, Bill A., and Mazzuchi, Thomas A.
Resource Type:: Thesis or Dissertation

How to Catch a Black Swan: Measuring the Benefits of the Premortem Technique for Risk Identification

Description:: Risk identification is the most important step in the risk management process because risks that are unidentified are implicitly assumed and unmanaged. Projects face the challenge of increasing complexity and uncertainty. Risk management has taken advantage of powerful quantitative tools to...
Author:: Gallop, David Lewis
Keyword:: Risk Identification, Deliberate Ignorance, Black Swan, Brainstorming, Team-Based Experiments, and Premortem Technique
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Willy, Christopher and Bischoff, John
Committee Member(s):: Sarkani, Sharam, Murphree, E. Lile, Willy, Christopher, Bischoff, John, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

ENABLERS AND CHALLENGES IN USING ENTERPRISE ARCHITECTURE CONCEPTS TO DRIVE TRANSFORMATION: PERSPECTIVES FROM PRIVATE ORGANIZATIONS AND GOVERNMENT AGENCIES

Description:: Federal Agencies and Private companies have many strategic initiatives they pursue in order to realize their visions. Due to the complexity of the strategic initiatives, there is a growing need for research on how enterprise architects and leaders should go about leading modernization and...
Author:: Asfaw, Tamrat
Keyword:: Strategic Initiatives, Management Instrument, Enterprise Architecture, Transformation, and Enterprise Architect
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Bada, Abiodun O. and Murphree, E. Lile
Committee Member(s):: Bada, Abiodun O., Allario, Frank, Murphree, E. Lile, and Stankosky, Michael A,
Resource Type:: Thesis or Dissertation

A Theoretical Model of Knowledge-Enabling Strategies for Professionals in Volatile Business Settings

Description:: This study utilizes a Grounded Theory approach to look at Knowledge Management through the lens of high-performing, high-functioning, mobile and independent professionals who hold the knowledge that organizations covet. Through these individuals the study explores alternative means for leveraging...
Author:: McLaughlin, Gabriele
Keyword:: Knowledge Empowerment, Knowledge Entrepreneur, Self Management, Employability, Knowledge Management, and Knowledge Strategies
GW Unit:: Engineering Management
Degree:: D.Sc.
Advisor:: Stankosky, Michael A
Committee Member(s):: Perotti, Jennifer, Murphree, E. Lile, Howard, Eisner, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

Increasing Research Productivity: The Impact of Knowledge Management

Description:: Universities are havens for research development, with access to facilities, equipment, and, most importantly, people; idea exchange and knowledge development create an environment that is conducive to the growth of research productivity. The outcome of this productivity is contingent upon the...
Author:: Hossain, Nargis
Keyword:: ANOVA, Innovation, University, Knowledge Managment, SharePoint, and Research Productivity
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Bischoff, John
Committee Member(s):: Murphree, E. Lile, Willy, Christopher, Sarkani, Shahram, Bischoff, John, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

Allocation of Resources to Defend Spatially Distributed Networks Using Game Theoretic Allocations

Description:: This dissertation presents research that focuses on efficient allocation of defense resources to minimize the damage inflicted on a spatially distributed physical network such as a pipeline, water system, or power distribution system from an attack by an active adversary. The allocation...
Author:: Kroshl, William Mark
Keyword:: Networks, Agent Based Simulation, Risk Analysis, and Game Theory
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahram and Mazzuchi, Thomas
Committee Member(s):: Dever, Jason, Murphree, E. Lile, Sarkani, Shahram, Mazzuchi, Thomas, and Fomin, Pavel
Resource Type:: Thesis or Dissertation

A Multi-Agent Simulation System to Evaluate the Disaster Response Team Coordination and Performance

Description:: Identifying the best design configuration for a disaster-response team is important for minimizing total operation time and reducing the human cost of natural and manmade disasters. This research presents a simulation system that is able to optimally design a disaster-response team and evaluate...
Author:: Hashemipour, Mehdi
Keyword:: Multi-Agent Coordination System, System Optimization and Performance, Decision Support System, Disaster Response Operation, Agent-Based Simulation, and Machine Learning
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Stuban, Steven M. F. and Dever, Jason R.
Committee Member(s):: Stuban, Steven M. F., Murphree, E. Lile, Sarkani, Shahram, Dever, Jason R., and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

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