How risky is a random process?

The riskiness of random processes is compared by (a) employing a decision theoretic equivalence between processes and lotteries on path-spaces to identify the riskiness of the former with that of the latter, and (b) using the theory of comparative riskiness of lotteries over vector spaces to compare the riskiness of lotteries on a given path-space. We derive the equivalence used in step (a) and contribute a new criterion to the theory applied in step (b). The validity of the new criterion, which applies second order stochastic dominance to utility distributions, is established by showing its equivalence to the benchmark decision theoretic criterion when comparing the riskiness of lotteries over any vector space. We demonstrate the theory’s tractability via diverse economic applications.     

经济新常态下我国粮食安全问题及发展研究

粮食安全关系着一个国家的社会稳定与民族的长远发展,是世界各国普遍关注的热点问题。我国属发展中国家,人口多耕地少,人地矛盾较为突出,粮食安全问题是国家需要长期关注的永久课题。保障粮食安全,对于经济新常态下我国的发展具有十分重要的意义。文章首先简要介绍了经济新常态的含义,然后运用比较分析、系统研究等方法深入分析我国粮食安全的现状,探明我国粮食安全所面临的主要问题。结果表明:我国粮食安全尽管目前基本有保障,但前景不容乐观。主要问题有生产成本上升,进口关税下降等,为探索保障未来我国粮食安全的途径,彻底解决我国的粮食安全所面临的问题,促进社会和谐发展提出建立粮食生产保护区,国家制定粮食最低收购价,增加科技投入,以合作社为龙头形成规模化生产经营,兴办国营企业,国家提供高质量生产资料等建议,旨在为党和政府制定相关方针政策提供有益参考。     

To post or not to post: social media sharing and sporting event performance

Social networks are becoming increasingly important for consumers, especially in the context of sport, where the service experience is highly intense. Few studies have combined subjective event performance variables and social network variables to analyze social network content sharing by sports practitioners. This article investigates the use of social networks in relation to sporting events. An empirical study examined the role of social network variables and sporting event performance variables in social media use. The sample consisted of 410 triathletes (72.2% male) aged between 18 and 66 years (mean 37.03 ± 8.62). Four analyses were performed using fuzzy‐set qualitative comparative analysis to examine the causes of sharing comments through social media, sharing photos and videos on social media, participant satisfaction, and word‐of‐mouth (WOM). The event's general image was a necessary condition in all cases. The combination of participants’ satisfaction and positive event image and the combination of social network use and positive event image lead to social network content sharing by athletes. The combination of positive event image and participant satisfaction leads to a positive WOM.     

基于价值增值的比较优势研究

本文基于Hummels et al．（2001）的分析框架，利用OECD提供的投入产出数据库，计算并比较中国与其他29个主要经济体产品增值率指数及增值比较优势指数。实证结果显示，我国的比较优势产业主要集中在制造业，然而这些比较优势产业的增值率不仅低于服务业和农矿制造业，并大大低于同一产业的世界平均水平。     

The usefulness of performance reporting in local government: comparing Italy and Spain

This article presents a comparative analysis of the perceived usefulness of performance information by managers in local authorities in Italy and Spain. Italy and Spain have similar cultural and administrative characteristics and in both countries there are external requirements (from central government) to adopt performance indicators. The adoption of performance indicators was found to be almost symbolic in both states.     

Russian Competitiveness in the Global Economy

Abstract

Using data on Russia's competitiveness collected by our research team as part of the World Economic Forum's Global Competitiveness Report (GCR), literature on competitiveness, in particular Michael Porter's theories on economic development and competitiveness, and benchmarking data from the global competitiveness project for other countries, this paper analyzes Russia's comparative strengths in its macro and microeconomic competitiveness. We investigate Russia's movement in ranks over a three-year period, discussing Russia's strengths in its macroeconomic climate and the weaknesses of its institutions. We illustrate the effects of these on three-key growth industries in Russia: oil, IT outsourcing, and the food sector.     

东北地区服务业与长三角、珠三角地区比较分析

本文通过东北地区服务业与长三角和珠三角地区的服务业增加值、就业结构、服务业内部结构角度对三地区进行横向比较和纵向比较,得出结论:东北地区服务业落后于长三角、珠三角,表现在第一、二、三产业的结构比例与服务业所占的权重。东北地区服务业应优化产业结构更好的推动经济的发展。     

逆比较优势进口高技术含量中间品与生产技术革新

科学刻画逆比较优势进口高技术含量中间品对生产技术革新的影响效应能为制定科学进口国外中间品和提升生产技术革新速度方面的政策提供有益参考,以剖析上述效应为目标的多维细致检验结果表明：首先,制造型和服务型中间品进口技术含量逆比较优势指数对生产技术革新的影响效应呈现倒U型,进口约2.5倍于自身比较优势水平技术含量的中间品能最大化中间品进口的生产技术革新功能,这一结论在多层面检验中均稳健成立。其次,中国中间品进口技术含量逆比较优势指数处于倒U型顶点的左侧正效应区间。对于动态比较优势持续提升的中国而言,在处理好“卡脖子”风险的基础上,可适度提升中间品进口技术含量,以更好地发挥中间品进口的生产技术革新功能。最后,倒U型效应具有非常强的稳定性,多维外部冲击均无法撼动倒U型效应。为此,倒U型效应可谓协调中间品进口和生产技术革新间关系的“铁律”。     

比较优势和竞争优势——发展中国家的两难选择

伴随着以知识经济和技术创新为主导的经济全球化浪潮的不断推进,国际产业结构加速调整升级,如何定位自己在国际产业链中的位置,如何使经济更快更健康的发展,发展中国家面临着比较优势和竞争优势两种理论指导思维的选择,每一种选择都存在困难和风险,但从长期的发展来看,要想更快的缩小与发达国家之间的差距,以竞争优势为主导的对外贸易及经济发展战略是最现实的选择。     

纽约与上海市知识服务业比较研究

本文通过对知识服务业含义的界定及纽约与上海市可比性的论述,应用大量详实的数据,采用实证方法对纽约、上海市知识服务业发展情况进行比较分析,得出上海市知识服务业中咨询业和广告业有很好的发展势头,而法律产业、健康服务产业等潜力巨大并有很强的发展空间等结论,并提出对策建议。