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Research Projects

This project describes and documents observational results that arise from the playtesting­-based evaluation of twenty-­six computer games focused on science learning or scientific research. We refer to this little studied genre of computer games as science learning games (SLGs). Our goal was to begin to identify a new set of criteria, play mechanics, and play experiences that give rise to play­-based learning experiences in the realm of different scientific topics.

Project Dates: 
October 2014

Computer games may well be the quintessential domain for software engineering R&D. Why? Modern multi-player online games (MMOG) must address core issues in just about every major area of Computer Science and SE research and education.

Project Dates: 
January 2010

Cross-situational personality consistency has been of interest in social psychology since the 1960s. With the advent of the Internet, a new range of “situations” has been presented for investigating human behavior in online environments.

Project Dates: 
October 2012

The development of a software system is now ever more frequently a part of a larger development effort, including multiple software systems that co-exist in the same environment: a software ecosystem. Though most studies of the evolution of software have focused on a single software system, there is much that we can learn from the analysis of a set of interrelated systems. Topic modeling techniques show promise for mining the data stored in software repositories to understand the evolution of a system.

Project Dates: 
April 2012 to December 2014

Code search has become an integral part of the day-to-day programming activity with developers seeking to take advantage of the vast amount of code and advice available on sites such as Stack Overflow, GitHub, and Ohloh.  Finding the 'right' code, however, remains a serious challenge.  CodeExchange is a new code search platform that offers social-technical code search: search enriched with social-technical metadata through which targeted queries can be formulated, results quickly filtered, and code that is found easily integrated into the project at hand.

Project Dates: 
July 2012

DELDroid is an automated system for determination of least privilege architecture in Android and its enforcement at runtime. A key contribution of our approach is the ability to limit the privileges granted to apps without the need to modify them.

DELDroid utilizes static program analysis techniques to extract the exact privileges each component needs for providing its functionality. A Multiple-Domain Matrix representation of the system's architecture is then used to automatically analyze the security posture of the system and derive its least-privilege architecture.

Research Area(s): 
Project Dates: 
July 2016

Collaboration is becoming ubiquitious; at the same time the emergence of new technologies have been changing the landscape of interaction and collaboration. I am interested in the effect that information technologies have on collaboration and the development of new organizational practices such as network-centricity, group-to-group collaboration, nomadic work, and large-scale collaboration. I am also very interested in how Web 2.0 technologies (blogs, wikis, social-networking sites, etc.) are used in collaboration and how they can be integrated into the course of daily work. 

Research Area(s): 
Project Dates: 
January 2002

This research focuses on techniques for identifying and reducing the costs, streamlining the process, and improving the readiness of future workforce for the acquisition of complex software systems. Emphasis is directed at identifying, tracking, and analyzing software component costs and cost reduction opportunities within acquisition life cycle of open architecture (OA) systems, where such systems combine best-of-breed software components and software products lines (SPLs) that are subject to different intellectual property (IP) license requirements.

Research Area(s): 
Project Dates: 
October 2007

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