A seamless multimodal transit system has been a goal for transportation planners and users. Owing to the developments of advanced public transportation and telecom technologies such as automatic vehicle location (AVL)...A seamless multimodal transit system has been a goal for transportation planners and users. Owing to the developments of advanced public transportation and telecom technologies such as automatic vehicle location (AVL) and real-time passenger information system, key just-in-time (JIT) concepts can now be realized in process design and coordinated scheduling to shape a seamless multimodal transit system. JIT refers to a production system that times both movements of goods during production and delivery from suppliers together. It meets the same logic for seamless multimodal services. Therefore, this study innovatively analyzes possible public transportation technologies for JIT uses;moreover, to layout the possible application frame-work of a transportation technology based JIT multimodal transit system for main station area in Taipei city. With this innovative framework, multimodal transit services can deliver to the right place at right time.展开更多
JIT(just in time)是一种按需供给的生产方式,也是一种视一切库存为浪费的生产方式,它遵循的是供需协调原则。在这种生产方式下,供方必须根据需方需要的产品品种、数量、交货时间和地点来组织生产,因而没有了生产的独立性和灵活性。为...JIT(just in time)是一种按需供给的生产方式,也是一种视一切库存为浪费的生产方式,它遵循的是供需协调原则。在这种生产方式下,供方必须根据需方需要的产品品种、数量、交货时间和地点来组织生产,因而没有了生产的独立性和灵活性。为了提高供方的独立性和灵活性,许多学者提出了一种基于JIT方式下,单一供方和单一需方如何保持协作来减少总成本的库存模型,本文对此库存模型作了修正,并在此基础上进一步研究了两个对总成本影响的因素:(1)生产率p与需求率d之比(在d一定的条件下);(2)生产提前期T。本文的研究结果对供需双方更好实施JIT生产方式有一定的参考作用。展开更多
20世纪后半期,一种高质量、低成本并富有柔性的新的生产方式在战后崛起的日本应运而生,即准时生产方式(Just In Time简称JIT),这种生产方式对丰田公司渡过第一次能源危机起到了突出的作用,更是为以后日本汽车工业的腾飞插上了翅...20世纪后半期,一种高质量、低成本并富有柔性的新的生产方式在战后崛起的日本应运而生,即准时生产方式(Just In Time简称JIT),这种生产方式对丰田公司渡过第一次能源危机起到了突出的作用,更是为以后日本汽车工业的腾飞插上了翅膀,被视为当今制造业中最理想且最具生命力的新型生产系统之一。有关资料显示,1987年仅有25%的美国企业应用JIT技术,而到现在,绝大多数美国企业已采用JIT。展开更多
JIT(Just In Time)是由日本丰田汽车公司独创的一种生产方式。现已在欧美企业中推行开来,并产生了巨大的经济效益。而我国的众多企业在引进这种先进的生产方式时,由于没有把握其精髓,盲目实施,导致了失败。对JIT现场管理特点进行分析,...JIT(Just In Time)是由日本丰田汽车公司独创的一种生产方式。现已在欧美企业中推行开来,并产生了巨大的经济效益。而我国的众多企业在引进这种先进的生产方式时,由于没有把握其精髓,盲目实施,导致了失败。对JIT现场管理特点进行分析,目的是帮助企业正确认识、实施JIT。展开更多
文摘A seamless multimodal transit system has been a goal for transportation planners and users. Owing to the developments of advanced public transportation and telecom technologies such as automatic vehicle location (AVL) and real-time passenger information system, key just-in-time (JIT) concepts can now be realized in process design and coordinated scheduling to shape a seamless multimodal transit system. JIT refers to a production system that times both movements of goods during production and delivery from suppliers together. It meets the same logic for seamless multimodal services. Therefore, this study innovatively analyzes possible public transportation technologies for JIT uses;moreover, to layout the possible application frame-work of a transportation technology based JIT multimodal transit system for main station area in Taipei city. With this innovative framework, multimodal transit services can deliver to the right place at right time.
文摘JIT(just in time)是一种按需供给的生产方式,也是一种视一切库存为浪费的生产方式,它遵循的是供需协调原则。在这种生产方式下,供方必须根据需方需要的产品品种、数量、交货时间和地点来组织生产,因而没有了生产的独立性和灵活性。为了提高供方的独立性和灵活性,许多学者提出了一种基于JIT方式下,单一供方和单一需方如何保持协作来减少总成本的库存模型,本文对此库存模型作了修正,并在此基础上进一步研究了两个对总成本影响的因素:(1)生产率p与需求率d之比(在d一定的条件下);(2)生产提前期T。本文的研究结果对供需双方更好实施JIT生产方式有一定的参考作用。
文摘20世纪后半期,一种高质量、低成本并富有柔性的新的生产方式在战后崛起的日本应运而生,即准时生产方式(Just In Time简称JIT),这种生产方式对丰田公司渡过第一次能源危机起到了突出的作用,更是为以后日本汽车工业的腾飞插上了翅膀,被视为当今制造业中最理想且最具生命力的新型生产系统之一。有关资料显示,1987年仅有25%的美国企业应用JIT技术,而到现在,绝大多数美国企业已采用JIT。