Yutaka Ohno

A programming environment supporting reuse of object-oriented software

The authors have developed a programming environment for object-oriented programming. This environment supports reuse of classes, especially retrieval of them with an expert system. The user can find classes and methods by describing the features of objects and operations according to an object model proposed. The target programming language is MOMO, which has been developed to implement the object model. A description is given of the retrieval part of the environment.<<ETX>>

A system for the representation of human body movement from dance scores

Abstract An image processing and computer graphics system for generating graphical representation of human body movement from Labanotation dance score is described.

Automated design of concurrent process systems

We have developed a computer-aided design technique for a concurrent process system. A concurrent process system is a system that several processes concurrently access some common variables. In designing such a system, a designer must pay attention to mutual exclusion of common variable access, synchronization between processes, and prevention of deadlock. Our design technique helps a designer to solve these problems. In our design technique, a designer describes formally some processing requirements of an object system. In this description, each process in the system is specified as a set of processing steps and a partial order on the set. Then our design technique proposes to the designer some proper execution sequences for each process. After an execution sequence for each process is selected, our design technique establishes several critical regions and constructs a design proposal, based on the designers requirements about mutual exclusion and consistency of common variable access. Because for the most part our design technique is mathematical operations on partially ordered sets, our design technique can be greatly aided by a computer, and then a designer can get a valid design proposal for a concurrent process system by using our design technique.