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原文传递 Task Decomposition Model for Dispatchers in Dynamic Scheduling of Demand Responsive Transit Systems; Final research rept. 1 Jul 99-30 Jun 00

题名：	Task Decomposition Model for Dispatchers in Dynamic Scheduling of Demand Responsive Transit Systems; Final research rept. 1 Jul 99-30 Jun 00
作者：	Rahimi, M.; Dessouky, M.; Gounaris, I.; Placencia, G.; Weidner, M.
关键词：	Demand responsive transportation; Dispatchers; California; Interviews; Vans; Computer programs; ADA programming languages
摘要：	This study was conducted to provide an in-depth understanding of the task complexities and requirements for paratransit dispatchers. Extensive field observations, video recordings, and expert dispatcher interviews were conducted to sketch out a dispatcher's task sequence model during a high workload period in Los Angeles. Using Hierarchical Task Analysis (HTA), this skeleton model was further extended to capture the sequence of activities between two dispatchers, a paratransit van dispatcher and a lead dispatcher, in the same operation room. The results of this analysis have shown that the dispatchers undergo intensive and complex cognitive processes. Their task performance seems to be heavily influenced by the type of software interface they use, the design of which is also analyzed. The DOS-based screen design has the advantage of information simplicity. The Windows-based system, on the other hand, had the advantage of a more natural spatial and iconic representation, well-design popup menus and cursor sensitive information display. The most significant disadvantage of this design was the very long system lag time. This problem alone was the reason why dispatchers did not used this system during high demand periods.
总页数：	83p
报告类型：	科技报告