Hiroshi Nunokawa

Multi-paradigm programming language: DeLis for decentralized network applications

In this paper, we present the design and implementation of a programming language named DeLis to build a decentralized application an networks. The characteristics of DeLis are: (1) it consists of several LISP-based interpreters; (2) it provides inter-process communication facilities to exchange S-expressions through channels; (3) it provides a user interface description facilities with GUI parts; (4) it allows to define programming paradigms at will, and describe application programs in multi-paradigms; (5) it is possible to change described programs dynamically at runtime. Thus, with DeLis we can build various applications on networks and realize their flexible execution to provide services satisfying user requests. We show the effectiveness of our proposal by building various applications with DeLis.

A user interface metaphor for distributed systems

This paper aims at the construction of a user interface that provides a metaphor for utilizing a large-scale and complex system such as a distributed system. The engineering and cognitive analysis of the distributed system is presented from the viewpoint of the user. A cognitive engineering model for the metaphor is proposed as a technique to design a metaphor satisfying the following conditions for the large and complex system: (1) representation with consistency that can describe all scenes and functions of the distributed system; (2) flexibility such as expandibility and dynamic representation; (3) engineering adaptability to the existing services on the distributed system. A user interface (UI) metaphor model with three metaphor mappings is proposed based on the concepts of metaphor mapping and the structurization. UI based on the proposed model is actually implemented on the distributed system, and the role of the metaphor in the distributed system interpretation is evaluated.

Computation Model for Human Communication

Abstract We have propose a computation model for human communication which has both dynamism and variety. And we propose a possibility to represent human communications as a figure of communication. This makes the computation model enable to model a dynamism in human communication smoothly. We design a programming language based on the computation model.

A communication computation model for developing computer supported cooperative work systems

Cooperative work is done not only by workers but with some software used by each worker. They do various communications including interaction between worker and software in cooperative works. To develop computer supported cooperative work systems, it is important to support various communications among them. A computational model that can represent communicative objects such as workers and software and various communications among them is necessary for that purpose. We propose this communication computation model as such a model. A worker and software are represented as the Autonomous Object, and a group is represented as the Group Field in this model. Various communications are represented by communicative functions that correspond to each communication form. We show that our model is effective for modeling various communications in cooperative work.

Communication computation model for modeling dynamic human communication

A communication computation model for modeling human communication is proposed. In this computation model, an individual communicator is represented by an Autonomous Object and a group communicator is represented by a Group Field. The mode of communication is represented by the communicative functions appropriate to each mode. A method is described for modeling the dynamic character of communication while changing among these various communication types. The dynamic character of communication is described as the selection of the communicative function corresponding to the mode of communication as well as the resultant information exchanges. A communication process is described as a combination of these communicative functions.