Workspace awareness is knowledge about others’ interaction with a shared workspace. Groupware systems provide only limited information about other participants, often compromising workspace awareness. This paper describes a usability study of several widgets designed to help maintain awareness in a

The usability of software APIs is an important and infrequently researched topic. A user study comparing the usability of the factory pattern and constructors in API designs found highly significant results indicating that factories are detrimental to API usability in several varied situations

Video widgets are user-interface components rendered with video information. The implementation and several usage examples of a family of video widgets, called video actors, are presented. Video actors rely on two capabilities of digital video: non-linear access, and the layering of video

will grow in respect to a rising Semantic Web, it is worth looking at the current state of Faceted Browsers. In this paper we extract characteristics of several browsers from various domains. We then propose the use of advanced widgets for Faceted Browsers and how to select appropriate widgets.

Using sound as part of the user interface in a typical software application is still extremely rare, despite the technical capabilities of computers to support such usage. The ICAD community has developed several interface concepts, patterns, and toolkits, and yet the overall software scene has

to the properties of that type of widget. These lenses enable full interaction with content that appears too small. We also present several extensions.

build GUI-style widgets. We describe several of these widgets and the results of a small-sample pilot study to test them. The results are not conclusive, but are encouraging, suggesting possibilities for video games and interactive theatre. 1.

. Especially, to construct excellent GUI (graphical user interface) is key technology. EPICS (Experimental Physics and Industrial Control System) 1 has several graphical editors to develop GUI. Although they are easy to use, they are not so flexible to use customized widgets. On the other hand, development

-like widgets, access to component widgets, and reuse of previous widget implementations. Several existing mega-widget extensions are then evaluated using the framework. 1

Groupware systems that use large shared workspaces generally provide only limited awareness information about other collaborators in the workspace. We are designing a set of groupware widgets to provide this missing information. This paper describes a usability study of a number of such widgets