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Web navigation: resolving conflicts between the desktop and the Web
... Shubin and Perkins [8] analysed conflicts within the conceptual model developed by users working with the desktop instead of the web, and their resulting impression of backtracking . As Tauscher and Greenberg have found [9], 30 percent of web navigation activities are Back button clicks. ...
... Back navigation on the web is discussed in many publications , however mainly describing user behavior when browsing and searching the web, and proposing new implementations of browsers' Back and history functionality. Shubin and Perkins [8] analysed conflicts within the conceptual model developed by users working with the desktop instead of the web, and their resulting impression of backtracking . As Tauscher and Greenberg have found [9], 30 percent of web navigation activities are Back button clicks. ...
A common challenge in the development of Web applications today lies in the handling of unforeseen navigation steps initiated by the user through the browser's back, forward and reload buttons. These operations break the synchrony of dialog states on the server and the client, provoking nonintuitive and possibly destructive application behaviour if not properly handled. We therefore present an approach to handling back and forward navigation that realizes undo/redo semantics and illustrate its implementation using the example of a Web-based conference management system. The presented approach is subsequently discussed with regard to its general applicability and alternative handling semantics.
... Wroblewski (2001) writes that single clicking is a part of the established convention of the WWW, and web users are accustomed to single-clicks while interacting. Additionally, Shubin (1998) relates double-click interfaces to desktop applications while relating single-click interfaces to browsers. In our experience, double clicking on the web is used only when selecting text, not for manipulating objects like in desktop applications. ...
... • Web-enabled. We consider it important that the system can be accessed using a standard web browser, avoiding the need to install any software on the user's computer (therefore, allowing seamlessly access from any computer), following the current trend from desktop to webtop (Shubin and Perkins, 1998). Moreover, if the system can be accessed through the Internet, the inconvenience of fixed schedules and meeting places can be avoided. ...
An important feature of an e-learning environment is the ability to continuously assess the progress of the students. With an adequate tracking of the students' knowle dge and performance, it is possible to re-orient the teaching strategies in time to ensure the success of the lear ning process. Suitable computer tools are required to help the teachers to achieve such difficult goal. In this paper, we present a tool for the definition, execution and evaluation of on-line tests, which can be easily integrated in an existing e-learning system. Prior to the development of the tool, we performed an extensive study of other existing alternatives, both commercial and free, that led our design. Thus, the developed tool presents the desirable features of those alternatives and o thers that we consider interesting.
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