Stephan Greene

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To aid designers of digital library interfaces and web sites in creating comprehensible, predictable and controllable environments for their users, we define and discuss the benefits of previews and overviews as visual information representations. Previews and overviews are graphic or textual representations of information abstracted from primary(More)
The Human-Computer Interaction Laboratory (HCIL) of the University of Maryland and NASA have collaborated over three years to refine and apply user interface research concepts developed at HCIL in order to improve the usability of NASA data services. The research focused on dynamic query user interfaces, visualization, and overview + preview designs. An(More)
This paper investigates the syntax of clausal gerunds—a class of gerunds that can have either a null subject or an overt DP Case-marked with accusative or nominative. First, it addresses the difficulty of accounting for gerunds that allow both null and overt subjects in principles and parameters/minimalist approaches to Case and control. Second, the paper(More)
Statistical social science databases present many unique data management problems. Among them is the fact that computer-aided use of statistical social science data is subject to serious but preventable errors in data manipulation and analysis, particularly given the increasing number of non-expert users. Two incremental prototype solutions to the problem(More)
To take advantage of today’s technology, many organizations are migrating from their legacy systems. With help from the Human-Computer Interaction Laboratory (HCIL) and Cognetics Corporation, the Maryland Department of Juvenile Justice (DJJ) is currently undergoing an effort to redesign their information system to take advantage of graphical user(More)
The Maryland Department of Juvenile Justice (DJJ) is seeking a new information system to replace its legacy system for youth case management. The major goal of the new information system is to improve the process of juvenile case management, and thus deliver more effective services to youths, by better facilitating the tracking of case information and the(More)
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