横断歩道における群集流の巨視的行動パタ-ンのシミュレ-ション (ミクロ〓マクロ・ダイナミックス<特集>)

概要

論文の詳細を見る
'Banded structure', shown by a collectivity of pedestrians on a large crosswalk, had been documented in a previous observational study (Yamori & Sugiman, 1990). In the present study, such self-organized collective structure is called a macro-behavioral pattern (MBP). One of the essential properties of MBP is that individual behavior (micro) and MBP (macro) determine each other. A MBP is originally generated through the accumulation of individual actions however, once it is established, it, in turn, constrains individual behavior. In the current study, the dynamic interaction between micro and macro behaviors was simulated in a computer model. The size of the area subjected to information processing by each pedestrian when deciding the direction to move was assumed to be restricted by the extent to which 'banded structure' was established. The results showed that the 'banded structure' observed in the previous study could be reproduced by the computer model. Furthermore, the model, which explicitly formulates the micro-macro link, makes it possible to examine the conditions under which' banded structure' is generated.