Information systems are pervasive in our everyday life. Anyone who is online must deal with the consequences of the fact that such systems are prone to malicious attack. In our attempt to safeguard our systems, determination of the value of security measures is critical and is a…
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The primary goal of this research is to investigate the mechanical reinforcing efficiencies of carbon nanofibers in a thermoset polymer material (vinyl ester), considering the presence of the three-dimensional interphase region between nanofiber and matrix, as well as the wavine…
Nusselt numbers and discharge coefficients were measured for a square array of confined, in-line, submerged, cylindrical jets impinging onto a normal target surface at distances ranging from greater than to less than one jet diameter. Jet-to-jet spacing was varied from two to fo…
The water industry is a heavy consumer of electricity to pump water. Electricity generated with fossil fuel sources produce greenhouse gas (GHG) emissions that contribute to climate change. Carbon taxation and economic discounting in project planning are promising policies to re…
This manuscript presents empirical and analytical analysis and discussion of security and privacy laws. The introduction, together with the three substantive chapters each represent separate research papers written as partial fulfillment of my PhD dissertation in the Heinz Colle…
The semiconductor industry has been driven by Moore's law for almost half a century. Miniaturization of device size has allowed more transistors to be packed into a smaller area while the improved transistor performance has resulted in a significant increase in frequency. Increa…
This dissertation demonstrates a framework for incremental model selection and processing of highly variant speech transcripts and user-generated text. The system reduces natural language processing (NLP) ambiguity by segmenting text by domain, allowing for domain-specific downs…
The study of ancient Egyptian monumental art is based on subjective and qualitative analyses by art historians and Egyptologists who use the change in stylistic trends as Dynastic chronological markers. The art of the ancient Egyptians is recognized the world over due to its spe…
Heterogeneous photocatalysis has been identified as a means of using renewable solar energy to produce the sustainable, non-carbon fuel H 2 and a variety of useful chemical intermediates. Currently, however, heterogeneous photocatalytic reactions are too inefficient to be indust…
This experimentation investigates the local heat transfer characteristics of an impinging jet with the effects of cross flow. The jet is formed by a single round hole with a diameter of 0.25 inches, sharp edges and a length to diameter ratio of 4. For one combination of impingem…
This thesis is part of current research at Center for Intelligence Systems Research (CISR) at The George Washington University for developing new in-vehicle warning systems via Brain-Computer Interfaces (BCIs). The purpose of conducting this research is to contribute to the curr…
Word alignment, the process of inferring the implicit links between words across two languages, serves as an integral piece of the puzzle of learning linguistic translation knowledge. It enables us to acquire automatically from data the rules that govern the transformation of wo…
In this thesis, we investigate the ability to implement desired changes in dynamical systems of nonlinear oscillators and also in a particular complex material system. In brief: we explore the dynamics and memory capabilities of a harmonically driven integrate-and-fire oscillato…
Many industrial control systems are vital components of modern life, and have proven vulnerable to some computer-based attacks. Because of this, professionals seek to ensure their continued service by exploring methods of defense and incident response. Applying computer forensic…
Phase-change heat transfer is an important process used in many engineering thermal designs. Boiling is an important phase change phenomena as it is a common heat transfer process in many thermal systems. Phase change processes are critical to thermodynamic cycles as most closed…
Saudi Arabia continues to be an anomaly for democratic researchers because of its assumed vast wealth. It also continues to be a hot bed for radical Islamist rhetoric. Oil’s relationship with democracy asserts that the presence of the former prevents that latter by mere happenst…
A reduced control-centric model of a particular behaviour associated with maritime helicopter rotor systems, known as Blade Sailing Phenomenon (BSP), is developed. BSP is a transient aeroelastic phenomenon described by the large undesired flapping motion of the helicopter rotor …
Recent progress in data collection has enabled the expansion and availability of raw data to take place at an explosive rate. Most of these data, which have been acquired over months and years, are "time series data". From Prognostics and Health Management (PHM) points of view, …
Popcorn failure in plastic electronic packages can be investigated by studying the unstable void growth of initially spherical or cylindrical void. During the soldering reflow process the entire plastic package is exposed to a temperature around 260°C. The moisture absorbed in t…