Kamran Sedig

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This research investigates the role of interface manipulation style on reflective cognition and concept learning through a comparison of the effectiveness of three verisons of a software application for learning two-dimensional transformation geometry. The three versions respectively utilize a Direct Object Manipulation (DOM) interface in which the user(More)
This paper is concerned with interaction design for visualization-based computational tools that support the performance of complex cognitive activities, such as analytical reasoning, sense making, decision making, problem solving, learning, planning, and knowledge discovery. In this paper, a number of foundational concepts related to interaction and(More)
Received: 9 August 2003 Revised: 14 September 2003 Accepted: 15 September 2003 Abstract One of the goals of information visualization is to support human thinking through the use of external visual aids. Mathematical mindtools can act as visual cognitive aids to enhance thinking and reasoning about mathematical objects and concepts. Although some(More)
This article presents a framework of micro-level interactions with visual representations of information in digital libraries. The framework is comprised of three basic interactions—conversing, manipulating, and navigating—and 13 task-based interactions: animating, annotating, chunking, cloning, collecting, composing, cutting, filtering, fragmenting,(More)
Public health (PH) data can generally be characterized as big data. The efficient and effective use of this data determines the extent to which PH stakeholders can sufficiently address societal health concerns as they engage in a variety of work activities. As stakeholders interact with data, they engage in various cognitive activities such as analytical(More)
Designing effective visual analytics systems is challenging. Not only must each component be well understood and effectively designed on its own, but each must also operate in harmony with the rest. To a large extent, the quality of the relationships among components determines how well visual analytic activities are supported. In this paper, we define the(More)
Complex cognitive activities, such as analytical reasoning, problem solving, and sense making, are often performed through the mediation of interactive computational tools. Examples include visual analytics, decision support, and educational tools. Through interaction with visual representations of information at the visual interface of these tools, a(More)
The objective of this paper is to show how information visualization can play an important and catalytic role in the reconceptualization of digital libraries as interactive knowledge environments. Information visualization has long been described as a beneficial and promising technology for digital libraries. Today, however, few digital libraries rely on(More)