Makoto Takeya

Structural analysis method for fuzzy rating scale data using fuzzy integration

A questionnaire method of the fuzzy rating scale data is actively put to practical use with high efficiency because of the relatively high reliability or easy handling of the data. As a structural analysis method of the rating scale data, the semantic structure (SS) analysis is proposed. The SS analysis is a method to interpret human daily activities or psychological sides from the item order, whose structure attention is paid with the intention to build the structure of the items. In the SS analysis, the rating allows a discrete fixed-point on the scale to be designated (fixed-point rating). However in some cases, it is difficult in reality for evaluators to be confident of a specific discrete fixed-point as a rating value. In this paper, a method of the structural analysis allowing the fuzzy rating scale data to be dealt with as fuzzy data is proposed.<<ETX>>

Structural analysis for fuzzy rating scale data

In order to analyze the results of a questionnaire using the rating scale method, it is important to clarify the relational structure among questionnaire items. A fuzzy structural analysis (FSA) method is proposed for structural analysis of the fuzzy rating scale. The authors define the ordering coefficient between two items and show that FSA is the generalization of semantic structure analysis and ordering theory.<<ETX>>

A semantic structure analysis method and its application to system evaluation

The authors present a new evaluation methodology used for developing or improving some systems with a human interface. It was applied to analyzing questionnaire surveys. The semantic structure analysis method, called SS analysis, is a new analysis method for a graphic representation among questionnaire items, based on multivalued score data. A method for construction and utilization of a synthesized structure using a directed graph, called an SS graph, is discussed. The theory of the SS analysis and its application to system evaluation are considered. Two examples of SS analysis are given. The SS was applied to evaluation of a multimedia computer-aided instruction system. This method was also applied to system evaluation for a new keyboard.<<ETX>>

Common framework design for development of 3D learning materials in virtual space

In this paper, the authors will first discuss problems the authors discovered as they tested a multi-user distance learning system (Virtual School) using virtual space that they developed. Based on the problems, we will conduct an examination of the interface and methods for developing learning materials. Next we will suggest a framework to be used to construct a learning environment utilizing virtual space with this comprehensive system. As a model for developing learning materials utilizing this framework, they report on its effectiveness from the point of view of how much it costs to create the learning materials.

Development of teaching material for cultivating logical thinking ability in a confrontational game system

The importance of cultivating logical thinking ability has been strongly emphasized. In addition, logical aptitude tests are included in entrance and employment exams, and logical thinking ability is used as a criterion in admission and hiring decisions. Consequently, this study has developed material for cultivating logical thinking ability in the form of a confrontational (two-player) game learning system. The programs constructed by students combat each other, and are then analyzed and improved as a means of supporting the cultivation of logical thinking ability. This paper proposes such a resource for cultivating logical thinking ability and reports the results of its experimental use in teaching high school students.

Development and application of a distance learning system by using virtual reality technology

There is a great demand for distance learning in various fields, such as provision of learning opportunities and learning information to infirm children and pupils, introduction of diversified subjects by collaboration among schools, support of credit acquisition, and applications to continuing education. Various distance learning systems have been proposed and put into practice. But, in addition, various problems in the present distance learning systems have been pointed out, involving both installations and operations. This paper proposes the virtual school as a possible new form of distance learning, in which virtual reality technology is used. Based on a prototype virtual school that was developed, the feasibility of the virtual school is investigated. An experimental class using the prototype system is also reported.

Exploration learning system in mathematical education

The authors discuss details of presentation and instruction methods under the exploration learning environment. In mathematical learning, it is very important for a student to acquire two kinds of knowledge, MK (mathematical propositional knowledge) and SK (strategic knowledge). A hypermedia system for the exploration learning is introduced. The characteristics of SK under the process of student problem solving are briefly discussed. With this characteristic of SK as background, a concept of exploration learning based on SK is introduced. A configuration of the hardware system using a laserdisc and a structure of the hypermedia system for exploration learning are shown.<<ETX>>