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1.
深入分析我国“一带一路”沿线地区风险投资时空格局及影响因素,有助于促进创新创业与企业发展、提高区域科技创新水平。运用空间分析方法和空间计量模型,对2003-2018年我国“一带一路”沿线139个城市风险投资的时空分布特征及影响因素进行分析,结果表明:①沿线地区的风险投资发展具有不均衡性,呈现为沿海高、西部低的分异格局;②风险投资的全局自相关系数均为正,呈现出明显的空间集聚特征;③风险投资机构数、国家高新区数量、风险投资退出、政府引导基金发展、财政科技支出对区域风险投资具有显著促进作用,环境污染对风险投资有一定抑制作用。随着ESG投资理念逐渐获得认可,沿线地区可以通过提升绿色发展水平促进风险投资发展。 相似文献
2.
ABSTRACTNatural language query systems over RDF data need to rely on the semantic relations in query. First, we propose the new crowdsourcing model that used to produce semantic relations dataset. The model not only inherits completeness of the iterative model and accuracy of the parallel model, but also saves human resources. Second, we mine the rules of semantic relation recognition from the correlations between dependency structures and semantic relations. Third, we propose an algorithm of semantic relation recognition for natural language query over RDF data, and experiments demonstrate that it can recognize more semantic relations than existing methods. 相似文献
3.
Mobile channel additions have been shown to increase consumer-brand relationships, brand satisfaction towards and overall purchasing from a retailer, but what is less apparent is whether shareholders are fully rewarded for retailers’ mobile channel additions. Results from an event study on 115 announcements relating to mobile app additions of publicly traded U.S. retail firms between 2009 and 2016 indicate that the stock market responds generally positively to mobile app additions, but specifically to the two mobile app addition types. Stock market responses to search-related and purchase-related app additions are moderated by firm size, product category, and target customer age. For announcements of search-related apps, the market responds more positively to product retailers than to service retailers, and to small firms than large ones. For announcements of purchase-related apps, the market responds less positively to firms that target younger customers than firms who do not especially target them. 相似文献
4.
伴随着加入世贸步伐的加快,中国金融业真正面临着国际化竞争所带来的巨大机遇和挑战。正是在这样的大背景下,最近一段时期,各保险公司纷纷与银行达成合作意向,合作内容包括代理保险、提供全方位的金融服务、资金网络清算、基本客户群的共建、金融创新、信息交流等方面。同时,各家保险公司的各种产品在银行和邮政的柜台上摆开了战场,一种全新的金融服务——银行保险,进入了人们的视野。这正是企业之间强强联合、优势互补、资源共享、以促进市场开拓和业务创新的必由之路,它必将推动我国保险业与国际保险业的接轨和新型业务产品的发展。 相似文献
5.
从国际视角看中国如何调整经常项目失衡 总被引:12,自引:1,他引:11
2004年中国国际收支经常项目顺差680亿美元,占GD P的4.2%,预计2005年该项目顺差还将继续扩大。长远来看,适当减少经常项目顺差,有利于充分利用国内外资源,促进国内经济和对外经济协调发展(王信、马昀,2005)。中国已明确提出,对外贸易不以大额顺差为目标。通常人们多从进出口的角度来看经常项目不平衡问题,但实际上,中国经常项目大量顺差,一个重要的结构性原因是金融市场不发达,居民预防性储蓄较高,国民储蓄难以有效地转化为投资。简单地抑制出口、增加进口、允许人民币升值,以及增加政府投资等,对调整经常项目的作用都不会太明显。应加快… 相似文献
7.
陆欣 《安徽工业大学学报(社会科学版)》2002,19(1):58-59
近几年,青少年犯罪案件呈突发性、偶发性,犯罪年龄降低,由单独型向团伙型发展的特点.其原因有家庭因素、学校因素、社会因素.预防和惩治青少年犯罪,需要全社会广泛参与,综合治理. 相似文献
8.
We investigate the effects of analysts' affiliation and reputation on dealers' market making activities. We find that for a given stock, dealers who have affiliated analysts covering the stock quote and trade more aggressively than those who do not have any affiliated analysts. More important, the reputation of affiliated analysts plays an additional role in the affiliated dealer's quote and trade behavior. Dealers with affiliated star analysts post more aggressive quotes and have larger market shares than dealers with affiliated nonstar analysts. Although dealers who post more aggressive quotes also induce affiliated star analysts to cover the stocks, the positive effect of analyst reputation on the affiliated dealers' quote aggressiveness remains significant and robust after controlling for potential endogenous and simultaneous problems. 相似文献
9.
Using nationally representative data, the present paper examines the impact of China's ongoing rural tax reform on farmers. The difficulties in further local governance restructuring are also discussed. It is argued that the issues associated with rural taxation and local governance in China result from inherent tension between an increasingly liberalized economic system and a still centralized political system. Although rural tax reform has helped to reduce farmers' tax burdens in the short term, the establishment of an effective local governance regime requires coordinated reforms to downsize local bureaucracy by providing social security for laid-off cadres, to strengthen local accountability by granting higher local formal tax autonomy, and to promote meaningful participation by expanding local democracy. 相似文献
10.