Yoshiki Nakamura

Development of the simulation for taking over process in the software maintenance

For private enterprises, it has become increasingly important and indispensable to utilize advanced information system. Generally speaking, an introductory process of information system starts with an original planning, which extends to a preparation for “Requirement for Proposal” and testing and finally actual system installation and software maintenance. When the system comes to be installed and software maintenance starts to take hold, the users will often make amend if it has a trouble or calls for an additional function. Although rare, the system must be completely rebuilt. Restructuring the entire system often results because of the reparation of bugs and other system wide significant troubles. In recent years, the system repatriation more often costs more than that of the development of software. In addition, an engineer would be too involved in system maintenance and reparation to initiate a new project. Consequently, the person will miss a new business opportunity for the company. One of the major objectives of this paper is first to focus on the timing of replacing an engineer. The paper will propose the best or optimal timing to change maintenance personnel as to facilitate and provide the materials for further discussion.

A Study of Trend and Characteristic Analyses of Business Activities from the Examination of CSR Reports

Increasingly, private enterprises have been required to become conscious of their social responsibilities. They ought growingly to pay attention to such issues as environment problems and social sustainability. As those results, they must be publishing an environment report on a voluntary basis. As consumers, they must find out how serious these companies really are in regard to environmental and other social concerns. They, as a result, have to buy their companies’ product and service on their own. Therefore, we need to assess from overview points, which include the environmental activity. Through those backgrounds, the purpose of this study is to analyze the CSR Report and Sustainability Report for 36 private enterprises to what extent and how serious various companies have been to a number of socially significant issues. By doing this, we hope that the analysis of these reports would point to trends as well as characteristics of companies’ concerns and commitments to critical environmental aspects of our societies.

Product development for successive generations: creating decision support graphic information utilising a generalised cost performance curve

This study adopts the modelling approach described by Kusaka and co-authors in previous papers. It aims at specifying two fundamental approaches for product development (PD) in order to gain long-range and short-range competitive advantages and to create decision support information. The long-range approach introduces product functions and technologies over successive generations of products, as and when they become appropriate; the short-range approach enables the latest information, based on present market needs and current technological advances, to be flexibly and quickly introduced into PD decision-making. Thus, the study builds a PD model that optimally selects product functions and technologies for successive generations. The system builds on previous research by introducing a time factor. A graphic information tool, which we call a generalised cost performance curve, enables decision-makers to see changing PD patterns for successive generations. It also clarifies product evolutionary patterns and their characteristics under planned roadmaps.

Construction of Systematic Learning Support System of Business Theory and Method

Business administration and industrial engineering expect their students to understand a lot of theories and technique and to be able to utilize their acquired knowledge in the workplace after entering business. However, the current educational system prevents these expectations from becoming a reality. The purpose of this research is designed to develop an educational simulator that teaches theories and methods and changes the effects and results generated by business decisions according to the degree of understanding. To confirm the validity, the developed simulator is tested against students to confirm its efficiency.

Product Development for Successive Generations: Creating Decision Support Graphic Information by the Modeling Approach

This study adopts the modeling approach described by Kusaka and co-authors. It aims at specifying fundamental approaches for product development (PD) in order to gain long-range competitive advantages and to create decision support information. Two approaches are introduced: the long-range approach introduces product functions and technologies over successive generations of products as and when they become appropriate; the short-range approach enables the latest environmental changes to be flexibly and quickly introduced into PD decision-making. Thus, the study builds a PD model that optimally selects product functions and technologies for successive generations. The system builds on previous research by introducing a time factor. It considers the latest information based on present market needs and current technological advances. A graphic information tool, which we call a generalized cost performance curve (GCPC), enables decision-makers to see through changing PD patterns for successive generations. It also clarifies product evolution patterns and their characteristics under a planned roadmap.