Index Catalog // GW ScholarSpace

Systems Engineering Concept Tool and Method Applied to Unmanned Undersea Vehicle Design

Description:: With unprecedented budget cuts resulting from Sequestration and a United States economy that has not yet rebounded, `do more with less' is the new motto for both industry and government. However, that is easier said than done. With 70% of a product's life cycle cost set at the concept...
Author:: Deitz, Daniel
Keyword:: UUVs, New Product Development, Systems Engineering, and Concept Development
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Holzer, Thomas and Eveleigh, Timothy
Committee Member(s):: Sarkani, Shahryar, Holzer, Thomas, Eveleigh, Timothy, Mazzuchi, Thomas, and Murphree, Lile
Resource Type:: Thesis or Dissertation

A Methodology for Evaluating Technical Performance Parameter Design Margins to Control Earth and Space Science Instrument Cost.

Description:: Costs of aerospace missions have increased over the last twenty years, placing the future of the space program in jeopardy. A potential source for such growth can be attributed to the complex multidisciplinary and challenging nature of earth and space science instrument development. Design...
Author:: Jones-Selden, Felicia
Keyword:: Technical Performance Parameters, Regression Analysis, Space Science Instruments, Design Margin, Cost Estimation, and Earth Science Instruments
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Holzer, Thomas H and Eveleigh, Timothy
Committee Member(s):: Sarkani, Shahram, Holzer, Thomas, Eveleigh, Timothy, Mazzuchi, Thomas, and Murphree, E. Lile
Resource Type:: Thesis or Dissertation

Improving System of Systems Progress: Dynamically Modeling, Predicting and Affecting Rate of Convergence

Description:: A systems engineer must identify effective techniques for improving the convergence of a System of Systems (SoS). The effectiveness of the identified techniques needs to be quantified so that the stakeholders may make informed cost benefit decisions. Exploring outer worlds, defending from...
Author:: Collins, Bernard F.
Keyword:: PEST Analysis, System of Systems, Smart Grid, and Dynamic Bayesian Network
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Doskey, Steven and Moreland, James
Committee Member(s):: Sarkani, Shahram, Eveleigh, Timothy, Mazzuchi, Thomas, Murphree, E Lile, and Doskey, Steven
Resource Type:: Thesis or Dissertation

Improving the State Estimates of a Maneuvering Target Using a Constrained Grid-Based Filter: A Comparative Study

Description:: Tracking maneuvering targets is an important but difficult problem. This problem occurs when tracking maneuvering boats or even people wandering around. If the target motion is linear and the measurement errors are Gaussian, then a Kalman filter provides the optimal estimates. However, since...
Author:: Silbert, Mark Eric
Keyword:: maneuvering target tracking, grid-based filter, track filter performance, Monte Carlo filtering, particle filter, and target tracking filter
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Mazzuchi, Thomas A and Sarkani, Shahram
Committee Member(s):: Eveleigh, Timothy, Stankosky, Michael, and Murphree, Lile
Resource Type:: Thesis or Dissertation

Improving Statistical Rigor in Department of Defense Test and Evaluation: Use of Tolerance Intervals in Designed Experiments

Description:: Given the push to provide defensible test data in the Department of Defense (DoD) Test and Evaluation (T&E;) Enterprise, the use of statistical methods has taken center stage. This research investigates the applicability of statistical tolerance intervals in designed experiments as an analysis...
Author:: Rucker, Alethea
Keyword:: Test and Evaluation, Statistics, Defense, Design of Experiments, and Tolerance Intervals
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Murphree, Lile
Committee Member(s):: Mazzuchi, Thomas A, Holzer, Thomas, Eveleigh, Timothy, and Sarkani, Shahram
Resource Type:: Thesis or Dissertation

Problem Management: A System Engineering Management Framework

Description:: Problem management is not recognized as a system engineering process. Unlike risk management where risks could impact a project at some future date, problems impact the project now. Therefore, a robust problem management process should be established (similar to the risk management process...
Author:: Olson, Bill Allen
Keyword:: Problem, Systems, Engineering, Knowledge, and Risk
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahram and Mazzuchi, Thomas A
Committee Member(s):: Mazzuchi, Thomas A, Eveleigh, Timothy, Murphree, Lile, Sarkani, Shahram, and Stankosky, Michael
Resource Type:: Thesis or Dissertation

Growing the House of Quality

Description:: Early systems engineering has been emphasized as a critical success factor within the U.S. defense acquisition community. With the trend of system complexity, technology dependencies, and interoperability requirements, defense acquisitions frequently suffer schedule slips and cost overruns. After...
Author:: Fomin, Pavel
Keyword:: technology maturity, optimization, and house of quality
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahram and Mazzuchi, Thomas
Committee Member(s):: Mazzuchi, Thomas A, Murphree, Edward L, Heatwole, Craig M, Eveleigh, Timothy, and Sarkani, Shahram
Resource Type:: Thesis or Dissertation

Application of a Novel Multiple Kernel Learning Framework for Improving the Robustness of Network Intrusion Detection

Description:: Current day Network Intrusion Detection Systems have several shortcomings such as high rates of false positive alerts, low detection rates of rare but dangerous attacks and the need for constant human intervention and tuning. Daily reports of incidents appear in public media including major...
Author:: Fossaceca, John M.
Keyword:: Multiple Kernel Learning, Pattern Recognition, Adaptive Boosting, Machine Learning, Cybersecurity, and Systems Engineering
GW Unit:: School of Engineering and Applied Science
Degree:: Ph.D.
Advisor:: Mazzuchi, Thomas A and Sarkani, Shahram
Committee Member(s):: Holzer, Thomas, Eveleigh, Timothy, and Murphree, E. Lile
Resource Type:: Thesis or Dissertation

Enhancing Model Based Forecasting of Geomagnetic Storms

Description:: Modern society is increasingly dependent on the smooth operation of large scale technology supporting Earth based activities such as communication, electricity distribution, and navigation. This technology is potentially threatened by global geomagnetic storms, which are caused by the impact of...
Author:: Webb, Alla
Keyword:
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahram and Mazzuchi, Thomas A
Committee Member(s):: Mazzuchi, Thomas A, Murphree, Edward L, Eveleigh, Timothy, Stankosky, Michael, and Sarkani, Shahram
Resource Type:: Thesis or Dissertation

Understanding the Role of Synchronous and Asynchronous Communication in Agile Software Development and its Effect on Quality

Description:: Through inward perceptions, we intuitively expect distributed software development to increase the risks of achieving quality goals compared to co-located software development. To compound this problem, Agile Software Development (ASD) maintains that face-to-face (synchronous) communication...
Author:: Green, Ronzelle L.
Keyword:: Agile, Software, Distributed, and Communication
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahram and Mazzuchi, Thomas
Committee Member(s):: Holzer, Thomas, Eveleigh, Timothy, and Murphree, Lile
Resource Type:: Thesis or Dissertation

Applying the Cynefin Sense-Awareness Framework to Develop a Systems Engineering Method Diagnostic Assessment Model (SEMDAM)

Description:: Different classes of problems warrant different classes of solutions. There is no agreed set of unified principles and models to support systems engineering use over a wide range of domains. Nor is there a set of consistent terminology and definitions. These two deficiencies impede the adoption...
Author:: Gilbertson, Russell Louis
Keyword:: Systems Engineering Methods, Cynefin sense-awareness Framework, Diagnostic Assessment, Complexity, and Systems Engineering
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahram and Tanju, Bereket
Committee Member(s):: Etemadi, Amir, Eveleigh, Timothy, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

Designing a Resilient Social Networking and Public Participation System (SNAPPS)

Description:: The Federal Emergency Management Agency (FEMA) has been plagued by poorly managed disasters throughout its history. As the Agency has evolved, it has adopted the use of better technology to enhance its missions. Hurricane Sandy represented a shift in technology adoption and community engagement...
Author:: Young-McLear, Kimberly
Keyword:: National Incident Management System, Disaster Response, Federal Emergency Management Agency, Public Participation, Viable System Model, and Social Media
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahram
Committee Member(s):: Sarkani, Shahryar, Eveleigh, Timothy, Mazzuchi, Thomas, and Murphree, E.
Resource Type:: Thesis or Dissertation

A Systems Approach for Point Cloud Data Management

Description:: This dissertation assesses the current state of systems data management, particularly of point cloud data from light detection and ranging (LIDAR) reports, and proposes a full multi-dimensional data management system using custom software. The volume of collected point cloud data is growing...
Author:: Ferede, Haregu
Keyword:: LIDAR, Point Cloud, multi-dimensional, and data management
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahram
Committee Member(s):: Sarkani, Shahram, Eveleigh, Timothy, Murphree, Edward, Mazzuchi, Thomas, and Tracy, Rex
Resource Type:: Thesis or Dissertation

Predicting Schedule Delay Caused By Errors During Software Integration

Description:: This research was conducted to evaluate and quantify the impacts complexity has on schedule based on errors created by organizational and system dependencies that occur during software integration testing. The combination of individually developed and managed systems and their interdependencies...
Author:: Alexander, Kelly Dula
Keyword:: Schedule, Naive Bayes, System Integration, Software Integration, and Prediction
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahram and Mazzuchi, Thomas
Committee Member(s):: Tanju, Bereket, Eveleigh, Timothy, and Etemadi, Amir
Resource Type:: Thesis or Dissertation

A Matrix-Based Method for Optimizing the User Interface Design of Electronic Medical Record Systems

Description:: Usability issues present in current Electronic Medical Record (EMR) systems diminish healthcare provider satisfaction, lower productivity, and introduce medication-related errors, all major factors that impact improvements in the quality-of-care and lead to unrealized savings estimated at $12...
Author:: Kuqi, Kushtrim
Keyword:
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahryar and Holzer, Thomas
Committee Member(s):: Sarkani, Shahram, Eveleigh, Timothy, Mazzuchi, Thomas, and Murphree, Lile
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:: FDTD, Multi-Fidelity, Models, Surrogate Models, Systems Engineering, and Kriging
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahryar and Eveleigh, Timothy
Committee Member(s):: Sarkani, Shahram, Sarkani, Shahryar, Eveleigh, Timothy, Mazzuchi, Thomas, and Murphree, E. Lile
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, tidal currents, and electricity from tidal currents
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahram
Committee Member(s):: Eveleigh, Timothy, Mazzuchi, Thomas, Doskey, Steven, and Murphree, E. Lile
Resource Type:: Thesis or Dissertation

USING AN IDENTITY AND ACCESS MANAGEMENT SYSTEM AND SYSTEM DYNAMICS MODELING TO DETECT POSSIBLE INSIDER THREATS

Description:: The difficulty of detecting insider threats before catastrophic events can occur continues to plague many industries, and the aviation industry is under particular pressure to detect possible infiltration by terrorists and their sympathizers posing as legitimate workers. Insider threats were...
Author:: Branker, Jonathan M.
Keyword:: Insider Threat, Identity Management, Credentials, System Dynamics, Systems Engineering, and Threat Signatures
GW Unit:: School of Engineering and Applied Science
Degree:: Ph.D.
Advisor:: Eveleigh, Timothy
Committee Member(s):: Sarkani, Shahram, Eveleigh, Timothy, Wasek, James, Murphree, Lile, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

The Impact of Risk Identification Biases and Trends on Space System Project Performance

Description:: Risk identification during the design and development phases of complex systems is commonly implemented but often fails to result in the identification of events and circumstances that truly challenge project performance. Inefficiencies in cost and schedule estimation are usually held accountable...
Author:: Reeves, John Daniel
Keyword:: Risk Management, Engineering Management, Program and Project Management, and Systems Engineering
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Holzer, Thomas
Committee Member(s):: Sarkani, Shahryar, Holzer, Thomas, Eveleigh, Timothy, Murphree, Lile, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

A Study of the Performance of the Department of Defense Weapons Systems Acquisition Using Multiple Regression Analysis

Description:: Department of Defense (DOD) weapon acquisition programs often suffer from schedule slips and cost overruns associated with unanticipated performance failures found in the latter part of the programs. The Government Accountability Office (GAO) claims that cost and schedule estimates based on...
Author:: Tun, Zaw Phyo
Keyword:: cost growth, systems development, performance estimate, predicting performance, schedule slip, and multiple regression
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Willy, Christopher J
Committee Member(s):: Sarkani, Shahram, Murphree, Edward L, Willy, Christopher J, Eveleigh, Timothy, 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:: QbD, S-Curves, TRIZ, Systems Engineering, Six Sigma, and Fundamental Limits
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Mazzuchi, Thomas A and Sarkani, Shahram
Committee Member(s):: Holzer, Thomas H., Eveleigh, Timothy, and Murphree, E. Lile
Resource Type:: Thesis or Dissertation

Reusing Legacy DoD Systems: Making the Right Choice

Description:: As a result of the reuse of legacy systems by the Department of Defense (DoD), DoD programs often experience overruns and technical difficulties. With the constriction of DoD budgets, reuse of legacy systems is frequently touted as the solution to cost, efficiency, and time to delivery problems;...
Author:: Eiband, Meredith
Keyword:: Evaluating Legacy Systems, Reuse Framework, Legacy DoD Systems, and Reuse
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahryar
Committee Member(s):: Holzer, Thomas, Eveleigh, Timothy, Murphree, Lile, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

A Systems Thinking Approach to Cost Growth in DoD Weapon Systems

Description:: The cost of Department of Defense (DoD) weapon systems acquisitions has risen at an alarming rate of 46% since the 1960s, according to third-party investigations. Despite considerable DoD efforts to reduce cost growth, historical review demonstrates a pattern of underestimation of weapon systems...
Author:: Assidmi, Luay
Keyword:: DoD, TREND, Systems Thinking, and Cost Growth
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Mazzuchi, Thomas A and Sarkani, Shahram
Committee Member(s):: Eveleigh, Timothy, Murphree, Edward Lile, and Stankosky, Michael
Resource Type:: Thesis or Dissertation

A System Dynamics Approach to Implementing Consumer Experience in Technology Adoption Models

Description:: A System Dynamics Approach to Implementing Consumer Experience in Technology Adoption ModelsThe ethanol-fuel ecosystem presents a common narrative seen in many systems whose components include durable goods with high switching costs to the consumer: Market growth does not match policy...
Author:: Chernicoff, William
Keyword:: Consumer Choice, Energy Policy, Complex Choice Modeling, Multi-Stakeholder System, , Ethanol Fuel, and Word-of-Mouth
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Sarkani, Shahryar
Committee Member(s):: Sarkani, Shahram, Murphry, E. Lille, Holzer, Thomas, Eveleigh, Timothy, 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:: system maturity, petri net system readiness level (PNSRL), and systems engineering
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Blessner, Paul and Olson, Bill
Committee Member(s):: Etemadi, Amir, Eveleigh, Timothy, Mazzuchi, Thomas, Murphree, E. Lile, and Olson, Bill
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:: Symptomatic cause, Causal Analysis, Latent cause, Human error, and Human system integration
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Fossaceca, John M. and Iammartino, Ronald
Committee Member(s):: Sarkani, Shahram, Eveleigh, Timothy, Mazzuchi, Thomas A., and Murphree, E. Lile
Resource Type:: Thesis or Dissertation

An Empirical Study of the Effect of Integrating Visualization Tools Within Requirements Engineering

Description:: The requirement engineering phase is widely considered an essential part of the system engineering process. As system complexity increases, system engineers will require tools dealing with the challenges complexity introduces. The ability to recognize, capture, and analyze these system...
Author:: Logan, Bradford A.
Keyword:: Requirements Engineering, Visualization, Complexity, and Systems Engineering
GW Unit:: Systems Engineering
Degree:: Ph.D.
Advisor:: Stuban, Steven M. F. and Murphree, E. L
Committee Member(s):: Mazzuchi, Thomas A, Eveleigh, Timothy, and Sarkani, Shahram
Resource Type:: Thesis or Dissertation

Military Unmanned Aerial Vehicle Smart Device Ground Control Station Qualitative Threat Assessment

Description:: The Department of the Defense (DOD) has transitioned smart devices onto the battlefield as a portable, handheld unmanned aerial vehicle (UAV) ground control station (GCS) without adequate cybersecurity protections, which places critical missions and their data at risk. Industry has developed...
Author:: Mansfield, Katrina Michelle
Keyword:: Smart Devices, Threat Model, Unmanned Aerial Vehicle, Ground Control Station, and Cybersecurity
GW Unit:: Engineering Mgt and Systems Engineering
Degree:: Ph.D.
Advisor:: Holzer, Thomas H
Committee Member(s):: Sarkani, Shahram, Murphree, Edward L, Eveleigh, Timothy, and Mazzuchi, Thomas
Resource Type:: Thesis or Dissertation

Systems Engineering Concept Tool and Method Applied to Unmanned Undersea Vehicle Design

A Methodology for Evaluating Technical Performance Parameter Design Margins to Control Earth and Space Science Instrument Cost.

Improving System of Systems Progress: Dynamically Modeling, Predicting and Affecting Rate of Convergence

Improving the State Estimates of a Maneuvering Target Using a Constrained Grid-Based Filter: A Comparative Study

Improving Statistical Rigor in Department of Defense Test and Evaluation: Use of Tolerance Intervals in Designed Experiments

Problem Management: A System Engineering Management Framework

Growing the House of Quality

Application of a Novel Multiple Kernel Learning Framework for Improving the Robustness of Network Intrusion Detection

Enhancing Model Based Forecasting of Geomagnetic Storms

Understanding the Role of Synchronous and Asynchronous Communication in Agile Software Development and its Effect on Quality

Applying the Cynefin Sense-Awareness Framework to Develop a Systems Engineering Method Diagnostic Assessment Model (SEMDAM)

Designing a Resilient Social Networking and Public Participation System (SNAPPS)

A Systems Approach for Point Cloud Data Management

Predicting Schedule Delay Caused By Errors During Software Integration

A Matrix-Based Method for Optimizing the User Interface Design of Electronic Medical Record Systems

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

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

USING AN IDENTITY AND ACCESS MANAGEMENT SYSTEM AND SYSTEM DYNAMICS MODELING TO DETECT POSSIBLE INSIDER THREATS

The Impact of Risk Identification Biases and Trends on Space System Project Performance

A Study of the Performance of the Department of Defense Weapons Systems Acquisition Using Multiple Regression Analysis

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

Reusing Legacy DoD Systems: Making the Right Choice

A Systems Thinking Approach to Cost Growth in DoD Weapon Systems

A System Dynamics Approach to Implementing Consumer Experience in Technology Adoption Models

A Robust System Maturity Model Using Petri Nets

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

An Empirical Study of the Effect of Integrating Visualization Tools Within Requirements Engineering

Military Unmanned Aerial Vehicle Smart Device Ground Control Station Qualitative Threat Assessment

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