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1.
Studies of financial market informational efficiency have proven burdensome in practice, because it is difficult to pinpoint when news breaks and is known by some or all the participants. We overcome this by designing a framework to detect mispricing, test informational efficiency and evaluate the behavioural biases within high-frequency prediction markets. We demonstrate this using betting exchange data for association football, exploiting the moment when the first goal is scored in a match as major news that breaks cleanly. There are pre-match and in-play mispricing and inefficiency in these markets, explained by reverse favourite-longshot bias (favourite bias). The mispricing tends to increase when the major news is a surprise, such as a goal scored by a longshot team late in a match, with the market underestimating their chances of going on to win These results suggest that, even in prediction markets with large crowds of participants trading state-contingent claims, significant informational inefficiency and behavioural biases can be reflected in prices.  相似文献   
2.
基于马克思经济学资源配置理论,探讨知识产权运营与数据要素市场化配置的关联性。在梳理数据要素市场化配置基础政策、关联政策和专门政策的基础上,对知识产权大数据平台系统、大数据金融产品、大数据中心建设和大数据产业应用联盟进行比较。结果发现:第一,我国知识产权运营领域数据要素市场化配置改革主要存在3大瓶颈:数据要素产权界定不明、交易流转不畅及安全监管不易;第二,知识产权运营领域数据要素市场化配置路径需从加快知识产权运营数据汇聚共享、推动知识产权运营数据产业化应用和强化知识产权运营数据安全治理3个方面予以完善。  相似文献   
3.
E-commerce live streaming can considerably help brands improve sales dynamics, but it is multiple dilemmas in choosing suitable e-commerce live streaming product showcasing modes. To address the multiple dilemmas, we first employ the Stackelberg game to depict three e-commerce live streaming product showcasing modes: brand self-live streaming, influencer-led live streaming mixture, and influencer-led special live streaming. Second, we analyze the relationship between choices and game parameters, including live streaming stimulus sensitivity, unit service quality improvement cost, and service sensitivity. Meanwhile, through the comparative analysis of the three modes, we get the optimal threshold of each mode. Last, we conduct a case study comparing Chinese apparel and accessories brands Hodo and RUANS to verify the above relations. The results suggest that: (i) the more sensitive consumers are to live streaming stimulus, the more beneficial it is for the brand manufacturer to employ special live streaming, while the increase in unit service quality improvement cost will harm the brand manufacturer; (ii) the fixed participation fee determines the choice of e-commerce live streaming product showcasing modes; (iii) e-commerce live streaming product showcasing modes can help brands to optimize their decision-making.  相似文献   
4.
戴浩   《科技进步与对策》2018,35(23):137-145
采用创业板2011—2016年251家科技型中小企业数据,从研发经费投入和技术人员投入两个方面检验技术创新投入在政府补助对企业成长影响的中介作用,以及市场化进程和要素市场发育程度的调节作用。实证研究发现:①研发经费投入在政府补助对企业成长的影响中有中介作用,技术人员投入在政府补助对企业成长的影响中中介作用不明显;②市场化进程越高的地区,政府补助通过研发经费投入对企业成长的影响越强,政府补助通过技术人员投入对企业成长的影响也越强;③要素市场发育程度越好的地区,研发经费投入在政府补助与企业成长间的中介作用越强,技术人员投入在政府补助与企业成长间的中介作用也越强。  相似文献   
5.
This paper estimates the value of political connections by examining stock price reactions to sudden deaths of retired government officials who were acting as independent directors of private firms in China from 2003 to 2012. Employing an event study, we find that, if a private firm loses political connections because of the sudden death of an independent director who was previously a government official, its stock price drops 3.61% on average within ten trading days. After the loss of political connections, we find that it is possible but infeasible for a private firm to reestablish political connections with the government in a short period of time. Moreover, the sudden death of a retired government official leads to a reduction in the economic benefits (e.g., bank loans, tax preference, and government subsidies) obtained by a private firm, which provides a reasonable explanation for the negative stock price reaction after losing political connections.  相似文献   
6.
Although disability sports have recently received positive attention, little concern has been directed towards them in youth research. In this article, we discuss the free-time sports in which youth with intellectual disabilities engage as a part of their leisure and their association with their peers. We maintain that every young person has a principal right to leisure and question what kinds of access youth with intellectual disabilities have to local sports communities in the Finnish context. Our empirical data consist of notes collected during sports training; interviews with young sports participants, their supervisors, and their parents; and online survey responses. Almost all sports are equally accessible to everyone; however, practical engagement in sports is not equally easy for everyone because long distances, lack of transportation, unsuitable sporting occasions and teams, or incapable coaches limit individuals’ participation possibilities. Furthermore, symbolic structures, such as neglectful attitudes, restrict the visibility of youth with intellectual disabilities in leisure sports. In many ways, supporting networks become significant when access to sport is under scrutiny. The most important enabling and restricting factors are families’ symbolic and material capital, as well as the unequal, poorly guided, and occasional leisure possibilities in different localities.  相似文献   
7.
针对平台视角下的数据交易供需双边匹配问题,基于双边匹配理论,提出了考虑模糊语言评价信息、区间数评价信息和0-1评价信息的混合型多属性匹配决策方法并定义了属性匹配满意度函数。以供需主体最大匹配满意度为目标,构建了数据交易供需双边匹配的多目标优化模型,并设计模型求解算法,将多目标化模型转化为单目标线性规划模型进行求解,以获取匹配结果。结果表明,通过对供需双方需求信息的详细分析,双边匹配结果能在最大程度上满足双方需求,同时,优化模型具有合理性及有效性。  相似文献   
8.
By applying the theoretical concepts of planned behaviors and social exchange, this study aims to examine the decisive factors that influence the behavioral intentions of local residents in three Atayal communities in Yilan County, Taiwan, to participate in the community development of ecotourism. This study uses AMOS software to perform structural equation modeling. The results of the study indicate that (1) residents’ attitudes toward community-based ecotourism development, perceived behavioral control, and perceived social benefits have significant correlations with their behavioral intentions and that (2) respondents involved in community-related organizations have more positive behavioral intentions. Due to their location in remote areas to which tourists rarely venture, these three Atayal communities lack the incentives to attract tourists or to trigger the participation of the broader community in ecotourism development with the promise of sharing tourism revenue. Most Atayal residents in the research area clearly lack the ‘rights to develop’ and the ‘means to get involved’. From the perspective of power relations, this study could contribute insight into the theoretical and empirical implications of hierarchical influences to examine the political–economic inferiority of indigenous behavioral intentions toward community-based ecotourism development.  相似文献   
9.
基于颠覆性创新、创新扩散、创新模糊前端等相关理论,从全流程角度创新性地构建了颠覆性创新四阶段扩散过程模型,包括颠覆性创意产生、颠覆性创新产品开发、侵蚀非主流市场、占据主流市场4个阶段,各阶段之间相互关联、循环往复,并受到技术、市场、政策、竞争等外部环境因素影响。选取液晶电视机和山寨手机作为高端和低端两个颠覆性创新典型案例,通过对其进行验证性分析,构建具体的高端与低端颠覆性创新四阶段扩散过程模型。  相似文献   
10.
ABSTRACT

Using the China Health and Retirement Longitudinal Study (CHARLS) 2011–12 baseline data, this contribution explores to what extent taking care of grandchildren and frail parents influences rural middle-aged Chinese adults’ off-farm employment. The findings show that, conditional on socioeconomic and demographic characteristics, taking care of grandchildren has a negative effect on rural middle-aged men's and women's off-farm job participation and hours worked. Caregiving for parents does not have the same negative effects on off-farm employment and hours worked. Furthermore, the study finds that annual earnings are also negatively affected by caregiving responsibilities, especially for women and men taking care of grandchildren.  相似文献   
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