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The metrics suite for object-oriented design put forward by Chidamber and Kemerer [8] is partly evaluated by applying principles of measurement theory. Using the object coupling measure (CBO) as an example , it is shown that failing to establish a sound empirical relation system can lead to deficiencies of software metrics. Similarly, for the(More)
Recommender technologies are crucial for the effective support of customers in online sales situations. The state-of-the-art research in recommender systems is not aware of existing theories in the areas of cognitive and decision psychology and thus lacks of deeper understanding of online buying situations. In this paper we present results from user studies(More)
In this paper we explore the usage of "force fields" in order to facilitate the computer user during pointing tasks. The first study shows that pointing time can be reduced by enhancing a pointing target with an invisible force field that warps the screen cursor toward the target center. The application of force fields is further supported in that we show(More)
In this paper we show how a model centered analysis of the usage of the mouse click interaction action in graphical user interfaces can be used to create a new menu system. The analysis identifies a possible new usage of the click action in cascading pull-down menus which can make it easier for the user during menu navigation and selection. A new menu(More)
| Based on the Cayley graph framework for the generation and application independent evaluation of multiprocessor in-terconnection topologies, an application dependent task mapping problem is addressed. In particular, we start from an inter-connection topology considered attractive from a graph theoretical point of view which is produced by an(More)
To enhance reusability in the field of simulation, model bases must be equipped with powerful tools for retrieval, modification and aggregation of simulation models. In this paper, the role of database management systems supporting a modeiing environment is discussed and reuse oriented query interfaces are presented. Specifically, we advocate a graph(More)