With recent progress of CASE ( ), it has been put into practical use to mechanize software development and maintenance. However, it is so early for us to change to whole use of CASE that we had to make a steady effort to improve software productivity.
This paper describes the following 4 points that Information Systems Department of Daido Steel has improved in the software productivity.
a. The software productivity improvement campaign by whole members of Information Systems Department.
b. APOLO which is the tool to draw up a knowledge-base of application rule.
c. The collection system of man-hour through the software development and maintenance.
d. Our concept to utilize CASE.

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The Rapid Application Development (RAD) concept is an approach for developing high-quality computer systems in a short period using

- (CASE) tools. This paper aims to build a RAD framework for UAV development to enable flexible and rapid verification for various hardware and software configurations. This paper presents the first step of developing an auto-tuning system for a quad tilt-rotor UAV to rapidly complete the tuning of control parameters, which takes up most of the development time. In this paper, the RAD framework for UAV development is realized using the MATLAB/Simulink Embedded coder as much as possible, and a seamless development process between the software and the hardware implementation is achieved.

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CASE（ ）という概念が示されて30 年が経つが，エンタープライズ系のIT 産業 では，手作業によるプログラミング工程を経てソフトウェアを製造する手法が主流をなしている． そこで，リポジトリ（Repository：Upper CASE ツールとLower CASE ツールが共有する設計情報データベース)をシ ステム開発の中心に置き，そこに蓄積された設計情報を活用することで人手を介さないソフトウェア製造工程を実 現する“RC2E(Repository Centric CASE Environment：リポジトリを中心としたCASE 環境)”の利活用を提唱すると ともに，取り組むべき課題について考察する．

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I have threefold objectives: First, to make clear the development process of Japanese IT companies; second, to clarify the features of business strategy of Japanese IT industry against American competitors and the severe depression; third, to indicate some of the tasks that Japanese IT companies are facing now. I will review the development process of Japanese IT (Information Technology) companies include semiconductor producers, computer manufacturers and software makers and make clear the some their features.
Now, Japanese IT companies must seek the way of strengthening their competitiveness. Japanese IT companies sought to reform their business aggressively. They stopped some weak businesses and reduced the number of their employees. They tried to shift parts of their factories from Japan to Asia and to concentrate the production of special IC. Other semiconductor producers carry out M & A. And Japanese software makers developed the automatic software tools such as CASE ( ) or CALS (Commerce At Light Speed) to improve the productivity. Japanese semiconductor producers must try to develop EC (Electronic Commerce) and to strengthen the international competitiveness.
Furthermore, beyond the global standards, it is important for Japanese IT companies to build up a new Asian economic framework such as the Asian free trade zone to cope with many other competitors. They have to achieve internationalization through the establishment of an Asian economic sphere, working towards Asian independence rather than simply seeking cheaper labor there.
Japanese IT companies must pay serious attention to the originality of IT workers and engineers. They have to rear the creative workers and engineers, and the originality of IT workers and engineers should be guaranteed through superior working conditions.

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In industrialised countries, the competitiveness of the products/services of the manufacturing industries in the global market is declining due to many factors, including commoditisation, rapid technological growth in developing countries and a lack of creativity within manufacturing companies. For this reason, designers in industrialised countries are required to create more innovative products/services whose novelty does not depend on their own original technology alone but on flexible resource integration among diverse actors. In order to design innovative products/services, empathy must be developed among diverse actors around the premise of the design. However, the ways to understand rationalities of each other is still unclear in extant research. As a result, diverse actors with heterogeneous rationalities fail to empathise to others, and designing innovative products/services as intended is difficult. To address this issue, this study aims to develop a practical method that achieve to understand the rationality of other actor in design innovative products/services. To achieve this, a context analysis method is proposed that captures the other actor’s context in formalised procedure. The proposed method includes four steps: conducting an interview to extract information of context, modelling the context, understanding the context and carrying out the depth interview to understand a target actor’s rationality completely based on the context modelling result. The proposed method was applied to therapy robot development, which is in its early stage of innovative service design. Moreover, the application result can encourage an actor to understand the other actor’s rationality by utilising the proposed method.

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As a base platform of Ecological Approach to Human Machine Systems (EAHMS), Structured Manuals Analysis and Design Method (SMAD) is a theory with technique for translating business languages (manuals: natural language) into modeling language (systems language) i.e. DFDs (Data Flow Diagrams), ERDs (Entity Relationship Diagrams) and Mini-specs (Miniature specifications) with its unique methodology of analysis and design. This paper successfully applied SMAD to Japanese business manuals in order to produce effective business simulation models. It is concluded that the SMAD approach to business simulation is promising to further enhance the EAHMS theory and practice for both American and Japanese companies.

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An object-oriented approach is applied to the road bridge planning and design in this research because it is difficult to model the whole process of road bridge planning and design using the conventional structured systems development method. In this paper, problems that arise from applying the object-oriented approach to it are pointed out, and the outline of the prototype system is described.

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Like many developed and developing countries, Bangladesh has witnessed a phenomenal growth in accessing digital technology particularly using the Internet.Although facing many constraints in establishing an internet-dependent society, Bangladesh Government has paid utmost priority to develop the Information Technology usage pattern in her different sectors.Recently Bangladesh has been connected with information superhighway through submarine optic-fiber cable network that creates a favourable environment to increase Internet usage among various citizens.The study attempts to explore the effects of different factors influencing the adoption of Internet in Bangladesh.The Rogers model of Innovation Diffusion has been utilised as theoretical framework to measure the effects of the factors that account for adoption of the Internet, assuming the Internet as an innovation.A multiple regression analysis is carried out to determine the attributes that affect the intention to adopt the Internet, where adoption intention is considered as the explained variable.The study reveals that relative advantage, compatibility and complexity appear significant among the five attributes of innovation, relative advantage, compatibility, complexity, trialability, and observability considered as explanatory variables.

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本論文は，情報技術およびコンピュータを中核とした情報システムが，企業経営の場において，組織との間に不協和を呈している状況をシステム設計手法を中心に考察したものである。すなわち，不協和発生の原因は，①情報技術の偏重，②組織の風土・文化への配慮の欠如，③企業組織に関する誤認，④経営環境の変化についての失念，にある。そして，不協和を呈しないためにシステム設計手法に求められる要件は，経営環境の変化に対する迅速かつ柔軟な対応力である。この実現に向け，CASEおよびリエンジエアリングが技術面で期待されている。しかし，技術だけで不協和発生の原因を排除することはできない。したがって，構築されたアプリケーションシステムが，企業経営の場において，組織との間に不協和を生じさせないようにするには，技術と組織能力を相互に干渉させながら双方をエンドレスにスパイラルアップさせることが必要となる。このためには，情報システムの構築をライフサイクルの概念に基づく一回限りの完結型プロジェクトとしてとらえるのではなく，マネジメント指向のシステム開発をサイクリックに繰り返すという非完結型のシステム構築概念を用いるべきである。本論文ではその方法論として，①組織風土適合アプローチと，②組織風土変革アプローチ，の2種類のプロジェクトを継続的に繰り返すべきことを提起する。

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オブジェクトポイント法に基づく工数見積りモデルを導出するための基礎データを得るため、クライアント/サーバシステム開発で収集された実際の工数データの統計的手法による分析を試みる。分析の結果、1)規模と工数の関係はほぼ線形であること、2)開発要員の経験と開発に使用する言語の種別が生産性に影響を与えていることを示する。

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This paper analyzes the fundamental dynamic characteristics of a tilting railway vehicle using a variable link mechanism for compensating both the lateral acceleration experienced by passengers and the wheel load imbalance between the inner and outer rails. The geometric relations between the center of rotation, the center of gravity, and the positions of all four links of the tilting system are analyzed. Then, equations of the pendulum motions of the railway vehicle body with a four-link mechanism are derived. A theoretically discussion is given on the geometrical shapes employed in the link mechanism that can simultaneously provide zero lateral acceleration and zero wheel load fluctuation. Then, the perfect tilting condition, which is the control target of the feedforward tilting control, is derived from the linear equation of tilting motion.

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