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本文针对办公自动化环境下电子文件与纸质文件并存的现状,阐述了"双轨制"档案管理的意义,并结合我省高速公路档案"双轨制"管理模式下采取的措施进行探讨. 相似文献
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旅游业和道路客运业是关联产业,从一定程度上讲,旅游业也是客运业的上游产业。中国的旅游资源非常丰富,全国几乎每个县、市都有旅游资源。鉴于旅游业的季节性特点,每个城市的车站与景点之间很少有稳定的客运班 相似文献
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<Emphasis Type="Italic">Not</Emphasis> driving alone? American commuting in the twenty-first century
This paper investigates recent commuting trends by American workers. Unlike most studies of commuting that rely on data from
the American Community Survey this study utilizes the American Time Use Survey to detail the complex commuting patterns of
modern-day workers. Changes in the price of gasoline in recent years suggest that the incidence of “driving alone” should
be on the decline. Indeed, results show that the sensitivity of modal commuting with respect to changes in gasoline prices
appears to be relatively large. We estimate the gasoline-price elasticity of driving alone to be 0.057 and the gasoline-price
elasticity of carpooling to be 0.502. Additional factors also affect commuting, including socio-economic characteristics and
social desires. However, it is changes in gasoline prices that appear to account for nearly all of the recent variation in
the mode chosen for commuting. 相似文献