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Measuring Spatial Differences of Informatization in China 被引量:2
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作者 SONG Zhouying LIU Weidong +2 位作者 MA Li Michael DUNFORD 《Chinese Geographical Science》 SCIE CSCD 2014年第6期717-731,共15页
As the wide application of new Information and Communication Technologies (ICTs) shows, the world is moving fast to- wards an information age. Since China was first connected to the Internet in 1994, the development... As the wide application of new Information and Communication Technologies (ICTs) shows, the world is moving fast to- wards an information age. Since China was first connected to the Internet in 1994, the development of ICTs in China and around the world has been astonishingly fast, and yet there is a clear 'digital divide' among different regions in China. Although Chinese geogra- phers have paid attention to regional differences in informatization, they usually employ a limited number of indicators, mainly focusing on the Intemet. In fact, infi^rmatization is a much broader concept, covering not only the lntemet, but also mobile phones as well as user ability. In the light of these considerations, this study provides a comprehensive examination of the development of informatization and its spatial differences in China. First, based on a literature review, the paper identifies 29 preliminary indicators for measuring informa- tization, and employs prin,-ipal components analysis and the fuzzy analytic hierarchy process to streamline them into 12 indicators to form an ICTs Developmen: Index (ID1). Second, by using the data from provincial statistical yearbooks and the China Internet Network Information Center, the paper calculates the 1191 of each mega-region and each province in 2000-2010, and measures the changing spa- tial differences in the development of informatization in China. Lastly, the paper quantifies the relationship between informatization and economic growth. The empirical results show that the IDI of the western and central China has been increasing faster than that of the coastal region, indicating that the digital divide in China has been narrowing. 展开更多
关键词 informatizatiort Information and Communication Technologies (ICTs) Development Index (ID1) spatial ditlbrence digital divide
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季冻区沥青路面的补充设计指标研究 被引量:1
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作者 张熙颖 魏志刚 +1 位作者 孙东雨 王书娟 《公路》 北大核心 2016年第6期41-44,共4页
鹤大高速是"7918"公路网纵贯线中的一支。其自然区划属于季冻区,气候特点是冬严寒、夏酷暑,沥青路面结构会较早出现高温或低温病害,这严重影响其路用性能及经济性。我国的沥青路面设计规范中设计指标体系面向全总区域适用,没... 鹤大高速是"7918"公路网纵贯线中的一支。其自然区划属于季冻区,气候特点是冬严寒、夏酷暑,沥青路面结构会较早出现高温或低温病害,这严重影响其路用性能及经济性。我国的沥青路面设计规范中设计指标体系面向全总区域适用,没有针对季冻区的专门措施。文中结合鹤大高速沿线自然条件,选择6种典型沥青路面结构,采用BISAR中的应力应变模块计算结构在重载作用下的7种荷载响应。采用灰理论建立灰关联空间,通过形成差异信息空间,确定环境参数,计算出灰关联系数及灰关联度。以路表设计弯沉值代表路面结构性能,各荷载响应与路表弯沉值间的灰关联度即代表某一指标对结构路用性能的影响程度。通过这一方法,找出各设计参数对于路用性能影响程度的排序,形成针对季冻区的"国标+"设计指标体系。 展开更多
关键词 沥青路面 季冻区 灰理论 差异信息空间 灰关联度 国标+
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