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71.
作者在研读维克托·迈尔-舍恩佰格《大数据时代》后,对舍恩佰格的三个主要观点展开讨论并提出质疑,认为随机样本和全体数据同样需要,精确性和混杂性各有所用,相关关系离不开因果关系.文章还介绍了国外学者关于大数据伦理的讨论.  相似文献   
72.
2010年广州亚运会旅游的战略地位与应对策略   总被引:3,自引:0,他引:3  
广州亚运会具有体育与事件旅游双重属性。旅游业是深度利用亚运会的主力资源,是提升城市竞争力的动力产业,在亚运会战略实施中占有重要地位,因此应在亚运赛前、赛中与赛后采取相应对策。政府的高度重视与战略规划是实施关键。  相似文献   
73.
本文在学术界首次比较全面地研究了孙中山、毛泽东、邓小平对中国社会主义生产资料所有制结构的探索,指出了他们三者的异同,这不仅加深了学术界对他们社会主义思想的研究,而且有助于揭示经济落后中国社会经济发展的客观规律,对我们今天走自己的路、建设具有中国特色的社会主义亦有裨益.  相似文献   
74.
Drawing from literature regarding public engagement, the Elaboration Likelihood Model (ELM), computer-mediated communication research, and emotion psychology, this study examines the effects of companies’ social media communication strategies on public engagement behaviors as indexed by post likes, shares, and comments. Specifically, it investigates how corporate Facebook posts’ functional traits (functional interactivity and vividness) and emotional traits (emotion presence, valence, and strength) impact public engagement online. Through data mining and computer-assisted sentiment analysis of 33,379 posts from 106 Standard & Poor 500 companies’ Facebook accounts, this study finds a negative effect of functional interactivity but a positive effect of vividness on engagement. It also shows that emotional traits overall yield stronger public engagement outcomes. Two-way interactions between emotional and functional features are also detected. Theoretical and practical implications are discussed.  相似文献   
75.
Nowadays, many wicked problems such as environmental issues require organizations from multiple sectors to form cross-sectoral alliances. Cross-sectoral alliance networks can transfer resources and signal affiliations and value alignment between strategic partners. The communication of cross-sectoral alliances is a form of CSR communication that serves organizations’ strategic goals and objectives. Drawing on the literature on digital CSR communication and legitimacy theory, this article examines which legitimacy needs shape the formation of cross-sectoral ties on Facebook in addressing environmental and sustainable development issues in the United States. Combining data-mining, text-mining, social network analysis, and exponential graph modeling, this research investigates the structure of a network among 3071 organizations across multiple sectors. Findings show that organizations’ cross-sectoral tie formation is mainly driven by social legitimacy and alliance legitimacy needs.  相似文献   
76.

Industrialized areas represent a special group of urbanized areas, but sufficient attention has not been given to them concerning plant species richness and its importance for biodiversity conservation. These sites are considered the main drivers of biological invasions and biotic homogenization on a global scale, but the question of how and to what degree they contribute to biodiversity has yet to be raised. Data for 62 river ports (16 German, 26 Czech, 7 Hungarian, 4 Slovak, and 9 Austrian) on two important Central European waterways (the Elbe-Vltava and Danube waterways) were gathered for 40 years. In total, 1 240 plant species were found. Of these, 371 were classified as threatened and protected, nearly one third of the total number of species found in all of the studied Elbe, Vltava, and Danube ports. Significant differences in the proportion of threatened species in ports and cities were not found. More threatened species were found in the Danube ports than in the other ports, but their numbers fluctuated depending on the size of the port and the region (country). The results showed that the ports must be regarded as special types of species-rich industrial areas; thus, they should not be considered to be only sources of spreading invasive alien species. When planning port development, uniformity and vegetation management that is too intensive should be avoided. Extensively managed open areas and habitat diversity should be maintained.

  相似文献   
77.
This paper examines why the use of social networking sites (SNSs) leads to different results in cultivating bridging and bonding social capital for different groups of people. Based on in-depth interviews of 45 university students in Hong Kong, I find that Mainland Chinese students studying in Hong Kong actively use SNSs for seeking practical information about offline matters, and they obtain substantial enacted support from other Mainland students of the same university through SNS use. As a result, they accumulate both bridging and bonding social capital. Local Hong Kong students, however, use SNSs mainly for social information seeking and are only able to accrue limited bridging social capital through SNS use. Drawing on the theory of network domains, I argue that the different offline network structures in which students are located – namely, homogeneous and closed networks versus heterogeneous and open networks – explain this difference. Students with closed offline networks have defined expectations of online ties; they think of their online activities as practical and leading to real changes in their status among peers. Those with open networks have indefinite expectations of their online audience; thus, they interpret online activities differently, thinking of them as recreational, and they are playful in their online behaviour. These different outcomes of online activities consequently lead to diverse results in social capital accrual.  相似文献   
78.
This study draws on social comparison theory and the spread activation literature to explore the effects of opinions about the personal traits of Chinese and Americans on the United States (US) public’s perceptions of the Sino–US relationship. The study also explores how perceptions of the Sino–US relationship predict the perceived importance of various Chinese policy issues. The analyses of the secondary survey data showed that comparisons of positive and negative traits had different effects on public opinion about the Sino–US relationship. The respondents who viewed China as a partner or as a competitor also thought that human rights, the freedom of Tibet, and economic issues were important. Those who viewed China as an enemy believed that the selling of arms to Taiwan was important. The implications of the findings for theory construction and national image campaigns are discussed.  相似文献   
79.
郊野公园是优化城市空间格局、供人们游憩和健身的重要载体。通过对国内外有代表性的郊野公园规划案例进行归纳总结,利用比较研究的方法对其发展概况、主要活动项目、配套设施建设与相关规划条例等方面进行比较分析,并从选址特征、规划实施与运营管理情况3个方面总结我国郊野公园在规划与管理上的缺点与不足,在此基础上,对我国郊野公园今后的建设与管控模式进行展望。  相似文献   
80.
何济 《江汉论坛》2006,25(3):26-29
从宏观的角度看,由于社会经济发展的实质是技术或基本生产函数的不断创新,制度促进经济发展或阻碍经济发展的实质,也就是制度能否使社会的创造力充分释放出来,从而不断推动技术及基本生产函数的创新。制度的价值在于它能为经济活动提供一种稳定的长期服务,凭借它,人们可以对经济活动产生长期的预期。因此,人们选择一种制度并使其在历史过程中延续下去,必然意味着人们不断地对其做长期的利益投入并对其抱以长期的收益预期。  相似文献   
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