This paper proposes deep and fundamental structures of communication among persons in a “coexistential” setting. The basic framework for this formalization of communication structures is Leibnizian notions of space and time together with the notion of the Existential Graph by C. S. Peirce and that of the Petri net, more precisely, the occurrence net. The fundamental structures of coexistential communication are then formalized as co-creation of Leibnizian space and time in such a manner that they are used to link the (...) communicated messages, thus establishing the “coexistential atmosphere and field” (“Ba” in Japanese) among the individuals. This framework is then applied to the analysis of theater play communication. Finally, the framework of information edaphology is also introduced to discuss the growth processes of individuals and communities through coexistential communication. (shrink)

A framework for “improvisational” social acts and communication is introduced by referring to the idea of “relationalism” such as natural farming, permaculture and deep ecology. Based on this conception, the notion of Existential Graph by C. S. Peirce is introduced. The notion of extended self in deep ecology is substantiated based on the Roy Adaptation Model in Nursing Theory and Narrative approaches. By focusing on Leibnizian notions of space and time and by introducing Petri net, a spatio-temporal model of improvisation (...) is constructed. This model is expected to substantiate the interesting notion of “Ba” proposed by H. Shimizu reflecting Japanese culture. (shrink)

In this paper, we report the case of an Inclusive Design workshop. Inclusive Design is a design method that includes elderly and disabled people not only in interviews, but also in the upstream design process such as basic design and survey analysis. In the workshop, participants designed scientific educational materials that visually impaired and sighted people can use together. To work together regardless of visual disability, participants used the image-processing system and the stereo copying machine to make images tactile. We (...) think that collaborative work with elderly and disabled people in Inclusive Design can teach participants different perspectives and help to correct their biased view of each other. In fact, participants of the workshop noticed several facts that they were not aware of before. That is, the Inclusive Design workshop can improve social awareness. (shrink)