Harsha P. Kumar

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Users often must browse hierarchies with thousands of nodes in search of those that best match their information needs. The PDQ Tree-browser (Pruning with Dynamic Queries) visualization tool was specified, designed and developed for this purpose. This tool presents trees in two tightly-coupled views, one a detailed view and the other an overview. Users can(More)
This paper describes a new method for specifying widgets, the Interactive Object Graph (IOG). IOGs are an extension of statecharts designed for widget specification. They add special states which represent changes in the widget's appearance. These states enhance the readability of IOG diagrams. In addition, IOGs have the ability to represent and modify(More)
Current network management systems rely heavily on forms in their user interfaces. The interfaces reflect the intricacies of the network hardware components but provide little support for guiding users through tasks. There is a scarcity of useful graphical visualizations and decision-support tools. We applied a task-oriented approach to design and(More)
Today's telecommunications networks are becoming increasingly large, complex, mission critical and heterogeneous in several dimensions. For example, the underlying physical transmission facilities of a given network may be "mixed media" (copper, fiber-optic, radio, and satellite); the sub networks may be acquired from different vendors due to economic,(More)
BACKGROUND Cranial nerve deficits during CEA are a known complication. The purpose of this study is to evaluate if significant changes in somatosensory evoked potentials and electroencephalography increase cranial nerve deficits during CEA. PROCEDURES This is an observational retrospective case-control study analyzed with data collected from patients who(More)
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