Takeshi Kosaka

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It has been ten years since Truex et al. (1999) advocated the continuous development of information systems by business professionals or workers themselves. A few methods for systems analysis (SA) by business professionals have appeared during this time. However, systems analysis by business professionals has not gained widespread interest among(More)
Systems analysis has been practiced by expert systems analysts or IT people in the third person perspective or objective one. We question this style of systems analysis and investigate into what it should be and who should practice it in an unpredictable, turbulent environment. The existing systems analysis methods such as UML help systems analysts ignore(More)
The aim of this paper is to identify who is a systems analyst in organizations in a turbulent world. We see a need to radically rethink the way in which information systems are developed. There have appeared some efforts to create systems analysis methods for business professionals, for example, Alter (2002) and Bednar (2000). To promote the development of(More)
In the turbulent economy an organization must often reconstruct itself with self-reference to its own practices. Many business and IS professionals need some approaches to understand their practices or social realities for self-reference. Researchers developed academic approaches or methodologies such as structuration theory and actor-network theory that(More)
Based on many large data set, we calibrate a near-optimal heuristic as a constant function for guiding efficiently A or A * algorithm. We claim that this magic number exists as a universal constant for several kinds of date sets. This is perhaps related to the nature of their data sets though it is not theoretically analyzed yet. In general, A * and(More)
In CG community, many kinds of physical-based (impulse-based) approaches such as Mirtich's and Bar-aff 's ones have been proposed for showing dynamic animation. However, because they generate and calibrate only an impulsive force, i.e., an area of force distribution, the impulsive forces are not always precisely calibrated. Moreover, since they do not deal(More)