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91.
北京市风险投资的空间分布与合作网络研究 总被引:3,自引:1,他引:2
国内外有关风险投资(VC)空间集聚的研究大多基于国家层面,本文基于北京市VC机构的位置和联合投资信息,运用本文空间分析与社会网络分析技术,研究VC机构的空间集聚和合作网络。空间分析发现,VC机构主要集聚在CBD、金融街、中关村三大核心区;在时间尺度上呈现分散—集聚—再分散的趋势。其中,国资机构主要集聚于金融街,外资机构主要落户于CBD,且以私募基金(PE)类机构为主;中关村则依托高新技术成为创新型企业的融资区。叠加合作网络后进一步发现,城市尺度下的VC机构合作并不受地理区位限制,并且各个VC集聚区之间关系颇为紧密。按“中心度”到“边缘—核心”的递推分析表明,外资机构在北京市风险投资合作网络中具有突出地位,其对联合投资的偏好主导了网络的形态。国资虽占据了部分网络节点但核心地位不够突出,而本土民营机构虽然数量较大但在网络中多处于半边缘位置。 相似文献
92.
基于SNA的新型集中社区公共空间网络结构优化 总被引:2,自引:2,他引:0
公共空间并非“存在即合理”。公共空间网络结构效率折射出社会网络的重构能力、社会资本的建构强度、社会秩序的重塑能力。新型集中社区作为近年大量涌现的新型居住形态,正面临社会关系重构的巨大压力。本文运用社会学的网络分析法研究公共空间网络,并对苏州新型集中社区D的公共空间网络结构进行实证分析,其结论为:公共空间网络的关联度为0.216、中心势0.358、小世界值1.978,表明空间网络整体关联度不足,呈现出破碎化的特征;商业空间整合效应的发挥受到业态配置的影响;居民社会属性对空间网络结构特征造成一定影响。最后,基于“社会—空间”互动逻辑,以社会网络重构为导向,从集中安置模式、公共空间网络优化2个层面,提出新型集中社区有待进一步研究的方向,以期为当前及未来的集中社区规划建设和公共空间整体优化提供科学合理的依据。 相似文献
93.
退化土地的生态重建:社会工程途径 总被引:73,自引:5,他引:68
土地退化是全球环境变化的主要表现之一,而且与贫困问题互为因果。中国各地土地退化类型中,分布最广、影响最大的是土地沙漠化和土壤侵蚀,连片贫困人口也就分布于这些地区。在人口增长和自然资源需求增加的压力下,让退化土地自然恢复的思路已不切实际,必须通过社会投入对退化土地进行生态重建。重建要医治引起土地退化的经济和社会病根。还需要发达地区和欠发达地区的共同努力,因而是一种社会工程。其途径包括:从满足人民生存 相似文献
94.
DAVID DENEMARK 《The Australian geographer》1999,30(2):197-220
This paper examines the spatial implications of social-democratic policy transformation. It does so by exploring the political consequences of residential contextual unemployment engendered by a Labour government which had once been dedicated to maintaining full employment. Faced with economic crisis, as Przeworski's model predicts [Capitalism and social democracy, Cambridge University Press, Cambridge (1985)], New Zealand Labour, beginning in 1984, abandoned its traditional social-democratic statist policies, including the maintenance of full employment, and allowed unemployment to skyrocket under its stewardship. This meant subjecting its supporters to significant contextual cross-pressures, since many residential neighbourhoods became characterised by both high concentrations of Labour partisans, and by those recently unemployed by Labour's new market-liberal policies. Using original survey data merged with New Zealand census data, empirical findings show that residual partisan loyalties and a lack of a major party alternative constrained respondents' partisan disaffection, while channelling their disillusionment into both minor party voting and systemic, governmental criticisms - likely fuelling New Zealand's drive for electoral reform and a new system of proportional representation. 相似文献
95.
本文以“社交媒体多层次信息流”为概念框架,分析了四川九寨沟7.0级地震发生后,个人、当地的组织、宏观层面的主流媒体使用社交媒体所发挥的作用。通过对微博的数据进行挖掘分析,总结出地震灾害发生后社交媒体所具有的5项功能:人际之间的交流,地方政府、本土组织以及当地媒体的传播渠道,大众传媒信息发布的渠道,信息的收集和分享,微观、中观以及宏观各主体间沟通的渠道。在强震发生后社交媒体有巨大的传播潜力,本文的研究成果对未来大震发生后如何利用社交媒体来应对灾害有一定的借鉴意义。 相似文献
96.
地勘单位在属地化、企业化、市场化转变中,要树立人才新理念,加大人才资本的投资,优化人才工作环境,创新人才工作机制,牢牢抓住人才培养、吸引、使用三个环节,加快人才资源向人才资本的转变,充分发挥人才资本的营运作用,实现地勘单位发展的新跨越。 相似文献
97.
《Marine Policy》2017
Traditionally, the ‘social licence to operate’ (SLO) refers to the societal expectations imposed on corporate and commercial activities, often displayed by the willingness for corporations to go beyond the requirements of formal regulations. Alternatively, this paper investigates the emerging influence of the SLO in shaping government decisions regarding the use and impact of the marine environment and its resources. Using expert interviews, text analysis and case study analysis, this research delineated the contemporary SLO as it has manifested in Australian marine governance, with the results indicating that this is potentially occurring at a pace faster than can be systematically reacted to within the current political decision-making processes. Under these emerging conditions, the risk has been identified that traditional government decision-making and stakeholder consultation processes are lagging in their capacity to adapt to ensure that public policy processes can support and engage in this shifting dialogue and ensure the influence of information is appropriately weighted. This research highlights an emerging adjustment of community presence in marine governance and the immediate complexities and challenges this creates for government decision-making. In particular, it begins to explore the interaction of differing information, how this information is carried through communication channels, stakeholder behaviour, approaches to withholding or granting a SLO and the responsibility this carries. 相似文献
98.
《Marine Policy》2017
As climate change continues to pose a major threat to the well-being of both people and the environment, adaptation to its negative effects has moved to the forefront among occupations that rely on natural resources for their livelihood. As one of the main occupational groups who are dependent on nature, fishermen are expected to experience many new challenges from the changing climate. Though an adequate amount of scientific research on climate change has been carried out, few studies have explored the social circumstances of the issue, particularly in the context of small scale fishermen. This paper aims to address this gap. Aspects such as risks reduction, social relationships, climate change knowledge, alternative skills, involvement in adaptation planning and access to credit are recommended to be considered as these are found to provide synergy for social adaptation, and it is hoped that such recommendation strategies will assist stakeholders in generating and engendering effective adaptation strategies for small-scale fishermen. 相似文献
99.
《Marine Policy》2017
Global coral reef related tourism is one of the most significant examples of nature-based tourism from a single ecosystem. Coral reefs attract foreign and domestic visitors and generate revenues, including foreign exchange earnings, in over 100 countries and territories. Understanding the full value of coral reefs to tourism, and the spatial distribution of these values, provides an important incentive for sustainable reef management. In the current work, global data from multiple sources, including social media and crowd-sourced datasets, were used to estimate and map two distinct components of reef value. The first component is local “reef-adjacent” value, an overarching term used to capture a range of indirect benefits from coral reefs, including provision of sandy beaches, sheltered water, food, and attractive views. The second component is “on-reef” value, directly associated with in-water activities such diving and snorkelling. Tourism values were estimated as a proportion of the total visits and spending by coastal tourists within 30 km of reefs (excluding urban areas). Reef-adjacent values were set as a fixed proportion of 10% of this expenditure. On-reef values were based on the relative abundance of dive-shops and underwater photos in different countries and territories. Maps of value assigned to specific coral reef locations show considerable spatial variability across distances of just a few kilometres. Some 30% of the world's reefs are of value in the tourism sector, with a total value estimated at nearly US$36 billion, or over 9% of all coastal tourism value in the world's coral reef countries. 相似文献
100.
《Marine Policy》2017
The Netherlands was one of the first nations to introduce ITQs in their fisheries to manage national yearly Total Allowable Catches (TACs). These ITQs have gradually developed from an individual quota system in 1976 to an ITQ system in the 1980s. In 1993 the system was reformed into a co-management system. In this paper it is argued that many of the usual negative socio-economic consequences of ITQs mentioned in the literature have been largely absent, due to the embeddedness of ITQs in co-management arrangements. However, cracks have appeared lately in this combined management system, allowing an identification of its vulnerabilities. These findings show that the social and economic structure of Dutch fisheries is changing from a rather cooperative to a more competitive and exclusive system, more like conventional ITQs. 相似文献