For many interactive systems, and in particular designs influenced by the direct manipulation style of interaction, the user’s ability to have immediate visual and manipulative access to all data is limited by the ph...
详细信息
humancomputer interfaces which involve the use of multiple and redundant channels of communication will improve the quality and efficiency of interaction. In particular they will be easier to use for people with sens...
详细信息
humancomputer interfaces which involve the use of multiple and redundant channels of communication will improve the quality and efficiency of interaction. In particular they will be easier to use for people with sensory disabilities (or at least should be simpler to adapt). Such interfaces must be designed on a media-independent basis. The author discusses these assumptions and outlines a case study involving the Apple Macintosh graphical user interface.< >
Formal methods are widely proposed as an important part of the software design process, but the design of large systems imposes software engineering constraints on the refinement of these specifications into coded mod...
详细信息
The use of mathematical specification techniques is gaining momentum within industry and commerce. However much work still needs to be done to improve these techniques to make them more practically feasible. The autho...
详细信息
The use of mathematical specification techniques is gaining momentum within industry and commerce. However much work still needs to be done to improve these techniques to make them more practically feasible. The author concentrates on a particular problem-that the user's conceptual model of how a system works may conflict with the designer's understanding of how the user will view the system. There are two facets to the problem. First, mathematical specification is no way to communicate to the user how a system will look and feel. Second, mathematical models of interactive systems should incorporate claims, structures or principles about how the system will be used or understood. The author concentrates on the second facet by briefly discussing a database system. He shows how user-recognisable structures may be formulated and used in establishing criteria for designing and evaluating interactive systems, taking a software engineering approach.< >
A discussion is on a formal model of interactive systems: dynamic pointers. This model is useful, not only as a formal description tool, but also as a key to the informal understanding of certain issues and as an impl...
详细信息
A discussion is on a formal model of interactive systems: dynamic pointers. This model is useful, not only as a formal description tool, but also as a key to the informal understanding of certain issues and as an implementation technique. The focus of the article is on manipulation by which is meant 'doing things to things'. This is a rather wide definition, which at its simplest can be thought of as editing but at its richest encompasses virtually all interaction. The author goes on to discuss: modes of manipulation, mediated interaction, relating levels by translating pointers, changing objects with dynamic pointers and dynamic pointers for system integration.< >
High resolution touch screens and novel usage strategies have overcome earlier problems with parallax and inaccurate pointing. A study testing the utility of three touch screen strategies within the Hyperties hypertex...
This study explores the use of a hypertext system by patrons of three museums. Data on the articles accessed, the time spent in each, the number of times the index was accessed, etc., were collected from a total of mo...
A study comparing the speed, accuracy, and user satisfaction of three different touch screen strategies was performed. The purpose of the experiment was to evaluate the merits of the more intricate touch strategies th...
详细信息
ISBN:
(纸本)0201142376
A study comparing the speed, accuracy, and user satisfaction of three different touch screen strategies was performed. The purpose of the experiment was to evaluate the merits of the more intricate touch strategies that are possible on touch screens that return a continuous stream of touch data. The results showed that a touch strategy providing continuous feedback until a selection was confirmed had fewer errors than other touch strategies. The implications of the results for touch screens containing small, densely-packed targets were discussed.
System design should be controlled by sound engineering principles. We discuss issues concerned with the derivation and formalisation of such principles that may be employed in the construction of specifications of in...
详细信息
暂无评论