The second law of geography for a spatially enabled economy     

《International Journal of Digital Earth》2013,6(10):979-995

ABSTRACT

Location has proven axiomatic as an economic variable throughout human history. Tobler’s first law of geography introduced the importance of location; in that, near things are more related than far things. In an age of digital economies, a new research frontier exists where everything is more related to everything else and has an increased economic value from spatially enabled technology. The accessibility of digital-spatial information has brought economic geographers to a new understanding of markets within a Digital Earth framework. The importance of location to economic value can be expected to grow as the Internet of Things develops in sophistication. New business models enter and disrupt established markets with innovative spatially enabled approaches. A successful penetration of established markets suggests a new business model for financial and functional utility by engaging spatially enabled assets. The second law of geography is introduced as a conceptual framework to comprehend the economic potential of spatially enabled information. A comparative analysis of non-spatial versus spatial web agents provides a quantitative framework to demonstrate the benefits of the Digital Earth economy.  相似文献   

Emotion and politics in a mediated public sphere: Questioning democracy,responsibility and ethics in a computer mediated world     

《Geoforum》2014

This article debates the extent to which particular forums of the internet enable democratic discussions around social and political issues, developing the interest in cyber-geographies from the late 1990s and early 2000s. The paper investigates discussions around abortion in the UK media, and public response(s) to such discussions. The analysis originates from an article written for the Huffington post by political editor Medhi Hasan and deconstructs subsequent reactions to this through mainstream media and news sites, comments pages on these sites, and reactions on Twitter. We assess the democratic potential of these types of media, developing Habermasian notions of the public sphere by analyzing the extent to which specific forums within the internet sphere play a role in facilitating emotions in political discussions. We also discuss the impact of individual narrative and personal perspective and its role within this quasi-political space. In so doing, we question the extent to which these types of ‘new media’, as a forum for public discussion and interaction, enable democratic deliberation by assessing the engagement between users of this sphere, and the nature of those discussions. This presents an assessment of computer mediated communication as a new way of ‘doing’ politics through its absence and presence(s) and through ideas of distance, moral responsibility, and an understanding of ethics and care at-a-distance, presenting a holistic account of how we might envision these debates playing out.  相似文献   

互联网对中国电影企业分布和产业网络联系的影响——“院线”与“网络”电影的比较     

文嫮  谭迎君 《热带地理》2022,42(5):693-705

以中国2017年公映的305部“院线电影”和上线的1 025部“网络电影”为样本,运用社会网络分析方法,从城市维度比较分析了两类电影企业分布和产业网络联系差异,并运用计量和QAP（Quadratic Assignment Procedure）回归分析,测度了互联网对两类电影企业分布和产业网络联系的影响。结果发现：1）互联网没有带来地理终结。两类电影企业分布的空间基尼系数都高达0.9以上,皆存在高度聚集,但网络电影企业空间分布相对略微分散。2）相对于院线电影,网络电影产业网络联系的规模和平均最短路径皆更大,连通度和中心势皆更小。3）计量回归分析表明：互联网发展更好的城市,集聚的电影生产企业更多,尤其能对网络电影企业产生更强的吸引。QAP回归分析表明：互联网发展更好的城市之间更容易建立产业网络联系,尤其是建立“网络电影”生产的分工联系。  相似文献   

连翘高产栽培技术   总被引：2，自引：0，他引：2  

吴顺琴  徐世有  阮丽萍  杨真 《山西气象》2006,(3):33-34

本文介绍了现在比较常用的W in2000操作系统下安全功能配置,如何在Internet网上采取信息安全防范措施,以及使用这些防范措施过程中的一些经验和技巧,以提高整个系统的安全性和稳定性。  相似文献   

Network Topology and City Accessibility of the Commercial Internet     

《The Professional geographer》2013,65(3):327-339

The rapid growth in this decade of World Wide Web access through the Internet is supported by a complex matrix of telecommunications infrastructure. This paper presents an overview of the history of the Internet and recent efforts to measure its structure and performance, and examines the spatial organization of the commercial Internet backbone. The research presented in this paper differs from previous Internet measurement work in that we apply network analysis methods to evaluate Internet connectivity. Transportation network analysis techniques are applied to measure 1) connectivity of individual service provider networks and 2) accessibility of cities to Internet service. The results reveal many different strategies implemented by service providers in network design as well as large differences in levels of accessibility of cities and regions in the United States. There is also an apparent disparity between population and city accessibility to the Internet.  相似文献   

ROUND ONE FOR HSGP: A REPORT ON ACCEPTANCE AND DIFFUSION     

《The Professional geographer》2013,65(2):209-215

The expansion of the Internet and e-mail access around the globe, especially into less-developed areas, raises the question of how geographers might use this technology for research purposes and the development of appropriate methodologies. This paper identifies three ways in which the use of e-mail surveys for geographic research differs from traditional mail surveys. First, there are substantial differences in selecting an appropriate sample population. Second, electronic medium considerations such as alphabet character translation, survey format, and receiving end conditions pose unique data collection challenges. Third, ascertaining that e-mail addresses to be included in a survey are operative is discussed as a useful means of maximizing the potential of an e-mail survey. Examples from an e-mail survey of environmentalists in Russia illustrate these points.  相似文献   

南极互联网电子地图的数据获取及管理机制研究     

鄂栋臣  李海亭  庞小平 《测绘与空间地理信息》2005,28(5):1-3

网络电子地图的关键技术包括服务器端地理信息数据的管理机制和客户端GIS软件实现方式.在南极网络电子地图的开发研究中,主要采用地理信息库管理和数据多级存储的方式尽量做到南极地区空间数据和属性数据的一体化管理,从而避免大量数据可能引发的网络瓶颈.这对于提高系统模块的伸缩性有重要意义.  相似文献   

基于GIS技术的重大危险源信息监控系统   总被引：11，自引：2，他引：9  

夏伟玲  钟毅 《测绘与空间地理信息》2004,27(5):47-50

对重大危险源信息监控系统建设中的数据库设计和相关功能的实现技术进行了详细探讨,并对系统在功能实现上的作用进行了介绍。  相似文献   

基于空间插值的风场模拟方法比较分析   总被引：1，自引：0，他引：1  

董志南  郑拴宁  赵会兵  董仁才 《地球信息科学学报》2015,17(1):37-44

计算流体动力学方法是目前风场空间格局模拟的主要方法之一,该方法由于受到软硬件局限,多应用于小尺度的风场模拟及分析。该方法精确程度极大地依赖于3D建模的精细程度和迭代计算模型的准确程度,与现实风场的发育过程存在明显差异。而随着物联网技术的发展,我们可通过大量的现场传感器进行风场数据的实时采集,为风场动态实时化模拟提供精确的参数。为了确定风场动态实时化模拟的最佳方法,本文以中国科学院城市环境研究所园区内32个风场传感器的月平均风速数据为研究案例,综合分析了反距离权重插值、全局多项式插值、局域多项式插值、径向基函数插值、最近邻域法插值、普通克里格插值6种空间插值方法,并采用交叉验证的方法对插值结果进行比较。结果表明,反距离权重插值在模拟的误差范围、模拟的准确度、反映极值的能力上优于其他5种方法,为1:500尺度的风场空间格局模拟提供了参考。  相似文献   

搜索引擎Robot技术的优化算法研究     

蒯晓童  王银娣 《地理空间信息》2004,2(4):32-34

文章介绍了因特网搜索引擎的工作机制,以深度优先与广度优先算法的结合为基础,探讨了因特网信息搜索算法的优化。  相似文献