Hiroshi Morihisa

An identification method of risks in project plan document by automatic acquisition of risk expression

This paper addresses a problem to identify risks in project plan documents written by project managers. Because some project managers express risks without negative words, risk identification method by negative expressions is not enough to identify them. In this paper, we propose a risk identification method by automatic acquisition of risk expressions. The proposed method acquires the risk expressions from existing project plan documents by using the frequency of appearance in the sentences including the risks. After the acquisition of the risk expressions, the proposed method extracts the sentence where the expression indicates the risk. From the extracted sentence, the proposed method identifies the risk by comparing the items of the checklist of risks. In particular, the proposed method identifies the items corresponding to each extracted sentence by using related words of each item. The experimental result shows that the proposed method identifies 10.7 known risks and 5.8 unknown risks on average.

An Information System Infrastructure and Applications for Improving White Collar Productivity in a Steel Manufacturing Works

In the Japanese Steel Industries, computers were applied to the manufacturing planning in the middle of 1970’s and afterwards the total information systems of the steel plant in the field of manufacturing management have been developed. In consequence, productivity in the field of manufacturing has been improved. Furthermore, recently, the white-collar productivity in the field of management has been recognized as a major problem to be solved to cope with the international competition. In this paper, we propose the concept, its applications and infrastructure of information systems to improve their productivity. These days, as a result of decision making down-sizing, the problem-solving approach of white collar staff will be changed from the legacy “deterministic approach” to the “biological approach”, in which we solve problems by way of iterative hypotheses and verifications. We propose one-stop-shopping and seamless information systems which are distributed on the main information LAN in the works and suitable for white collar activities. In order to realize this concept, we constructed the FDDI local area network and developed some applications which make use of multi-media data such as bitmap images and photos.

An identification method of lacking information by clue phrases in plan document for project risk management

This paper addresses displaying items in the check list of project risks to project managers in order to prevent lacking information in a plan document for a project. It is difficult to identify information corresponding to the lacking information, but it is possible to identify information related to the corresponding information by using the relation between information in the plan document. So the proposed method uses “clue phrases” that are frequently appearing terms in related information and correspond to the items in the check list. The proposed method extracts frequent terms in the plan document that arbitrary excludes the information related to the items in the check list. For identifying corresponding information correctly, the proposed method regards that the common terms are not clue phrases. Experimental results show that the proposed method can extract information with recall rate of 81% and precision rate of 73%.

Compatibility with Total Optimization and Partial Optimization in Material Industry

Abstract We have developed a production planning system for a works in a material industry. The works focused on improving productivity by efficiently operating production lines. The conventional production planning did not guarantee the optimization of the entire works. Globalization of competition in recent years compelled the works to strengthen non-price competitiveness by shortening production lead time. The works had to realize production planning accomplishing shorter lead time. We achieved total optimization by making use of the theory of constraints or the basic principle of supply chain management. We adapted partial optimization of bottleneck line by using genetic algorithm-based logic to guarantee the total optimization of the works. We devised a method for assuring both total optimization and partial optimization and applied to an actual production planning system. Therefore, the production lead time was reduced by one-third, and the shipping lead time was reduced by two-thirds.

A training program for building client server systems and its evaluation using WWW browser

Describes a training program for building client-server systems (CSSs) which uses intranet technology in particular for novice software engineers (SEs). This program is a part of a seminar about techniques for building CSSs. The training program contains a target system and manuals. An order management system is selected as the target application. One exercise in this program is to program part of the target system, which contains many techniques for developing CSSs. The training manuals are given as HTML documents. Six experimental examinees used the training program in order to evaluate it. References logs for manuals, programming logs and compiling logs were recorded. The training process was divided into three phases: understanding, programming and debugging. The duration of each phase was calculated. The results showed that students could be trained in a limited amount of time, efficiently and easily.