创业乐观中介下社会网络对新创企业绩效的影响

社会网络不仅能够带来物质等方面的硬性支持,同时也能够带来情感、心理、认知等方面的软性支持,然而这种软性支持并未引起学者们的足够重视。旨在探讨社会网络与新创企业绩效关系及其作用机制,构建了包括社会网络、创业乐观、新创企业绩效、创业环境和创业经验在内的理论模型,以142名新创企业者为研究样本,使用SPSS、AMOS等统计软件对数据进行统计分析。结果表明,社会网络对新创企业绩效有显著正向影响,社会网络对创业乐观有显著正向影响,创业乐观对新创企业绩效有显著正向影响,创业乐观在社会网络与新创企业绩效关系间起部分中介作用,创业环境在社会网络与创业乐观关系间以及在创业乐观与新创企业绩效关系间起正向调节作用。     

社会保障体系的重构——新公共服务理论的视角

从新公共服务理论这一视角,结合中国社会保障体系的现状,探索一个符合中国实际的新型社会保障体系,从而得出在政府、非政府组织、社区、公民等多方对话协作基础之上的三维度社会保障体系为其现实路径选择。     

对冲基金、对冲策略以及市场中性

本文梳理了对冲基金的概念、特征及对冲策略,指出市场中性是这些对冲策略普遍存在的内在一致性要求。在此基础上,本文进一步讨论了市场中性策略的收益来源,分析了市场中性策略的做空优势,指出对冲策略拓宽了传统组合边界。     

Extending the SAM with Social and Environmental Indicators: An Application to Bolivia

Extending economic accounts with sets of social and environmental indicators is a first step towards a more integrated analysis of aspects of sustainability problems. In this article, therefore, a proposal is made to nest social and environmental indicators into an existing economic accounting framework. The Social Accounting Matrix (SAM) is taken as a basis, because of its flexibility regarding extensions with non-monetary data addressing social and environmental concerns. The main thrust of the paper is methodological. From the discussion of methodological issues and the application to the SAM for Bolivia for the year 1989, it is concluded that it is, in principle, feasible and relatively simple to extend the SAM with the two sets of indicators. However, additional data will have to be collected to be able to address, more adequately, the problems of sustainability.     

社会收入对西部城乡收入差距的影响——基于11省市2000户居民的调查数据

对城乡收入差距的研究最终将关注于真实收入的差异,本文依据对西部地区11个省市的2000个镇(村)2000户居民的调查数据的统计分析,发现西部地区社会收入的差距比经济收入的差距大得多;社会收入会对城乡收入差距产生直接影响,使西部地区城乡收入比扩大10.4%。因此,建议重视缩小西部地区城乡社会收入差距的政策设计、增加西部地区农村居民的社会收入、推行城乡一体化的社会保障体系、改革收入统计。     

Social protection for enhanced food security in sub-Saharan Africa

This paper identifies several positive synergies between social protection programmes and enhanced entitlements to food. One function of social protection is to manage or reduce vulnerability. Several instruments are reviewed – weather-indexed insurance, public works programmes, emergency food aid and buffer stock management – which aim to stabilise income and access to food across good and bad years, or between the harvest and the hungry season. Other social protection instruments aim to raise household income and crop production, for instance agricultural input subsidies or input trade fairs, as well as public works projects that construct or maintain physical infrastructure such as rural feeder roads. This paper also argues that entitlements to food can be strengthened if social justice principles are introduced to the design and delivery of social protection programmes. Examples reviewed include rights-based approaches such as employment guarantee schemes, community-based targeting and demand-driven accountability mechanisms. The paper concludes by arguing for a comprehensive approach to social protection that will achieve sustainable food security, by combining interventions that stabilise income or food production with those that raise income or food production, and are designed and delivered in ways that enhance social justice.     

Personality traits,basic individual values and GMO risk perception of twitter users

Abstract

The present study investigates how the most foundational factors to individual differences – personality traits and personal values – affect the perceived safety of genetic modification and their relative importance. Publicly available communication data from 522 Twitter accounts discussing genetically modified foods and their safety was processed in two steps. First, accounts were categorized by the researchers as viewing GM foods as either safe or not safe. Second, using the IBM Watson platform, the Twitter communication data were subjected to lexical analysis to assign scores according to the Five Factor Model for personality traits and Schwartz’s basic individual values to the individual accounts. Logistic regression analyses were performed to determine how perceived GM food safety is linked to personality traits and individual values. Although both traits and values significantly contribute to explaining GM attitudes, personality traits strongly moderate the effect of individual values on risk perception.     

Incentives, redistribution and social insurance

We extend the familiar income taxation model à la Mirrlees, so as to include income uncertainty, due for instance to a risk of illness. Following a line of research initiated by Blomqvist and Horn [1984] we prove that the existence of a Social Health Insurance system may be justified even when the insurance market is efficient. Moreover, if there is a negative statistical dependence between probability of illness and labor productivity, then the optimum of a Utilitarianist Social Welfare function implies that Social Insurance provides a complete coverage for every household.     

Unconventional Monetary Policy in the Eurozone: A Lack of Forward Guidance?

From July to December 2011, the three-month EURIBOR-OIS and EURIBOR-Repo spreads quadrupled and reached 100 basis points due to a stabilization of the EURIBOR and a decrease in the overnight index swap (OIS) and Repo. Using a specific monetary policy announcements and financial indicators database, we find that the European Central Bank’s (ECB’s) unconventional measures did not systematically have a calming effect: Asset buyout announcements decreased market strains, whereas interest rates and liquidity provision announcements did not. Moreover, liquidity provision seems to have a stressing effect. Our findings are consistent with the theoretical underpinnings according to which forward guidance crucially determines the effectiveness of unconventional monetary policies.     

美日欧发展高新技术产业的比较研究

在全球竞争目益激烈的背景下,美日欧不断调整完善科技创新战略,加强重点领域研发,大力发展高新技术产业,培育新的经济增长点,以便在竞争中占据有利地位。通过从九大方面,包括产业发展战略模式、产业发展重点领域、法律保障、科技管理体制、科技投入、产学研合作模式、政府在科技成果转化和商业化中的作用、技术创新财税支持政策、科技人才政策等,对美日欧发展高新技术产业进行分析和比较．以期了解美日欧在发展高新技术产业中的做法和特点,使我国在发展高新技术产业中有所借鉴。