农民工返乡创业问题研究——基于对湖南省的实证分析

农民工返乡创业在很大程度上促进了内陆县域(农村)经济发展,对于解决"三农"问题,促进城乡一体化,建设社会主义新农村,贯彻落实科学发展观意义重大.但是,由于国家政策扶持力度不够等原因,导致农民工返乡创业在取得一定成绩的同时,也存在许多困难.在深入调查研究的基础上分析了农民工返乡创业的基本情况和存在的主要问题,并就如何科学引导和扶助农民工返乡创业提出了政策建议.     

归零Turbo码参数的盲识别

针对归零Turbo码码率、码组起点、交织起点、交织长度参数识别问题,首先引入矩阵秩量比的概念,推导出适用于归零Turbo码矩阵秩量比下限,提出了基于秩量比判决门限的码长识别算法;其次,遍历一交织帧输出码元,找出最小秩量比对应的位置,实现交织起点和码组起点的识别;然后,依靠完整的交织帧输出数据,利用分析矩阵实现码率与分量编码器中寄存器个数识别;最后,由以上识别的参数计算出交织长度。仿真结果表明：在信噪比为5 dB时,单靠信息序列,各部分的识别概率能达到80%以上;在交织长度为100时,提出的识别算法与传统算法相比,性能相近,识别时间大约缩短为原来的1/3。     

On the pricing of forward starting options in Heston’s model on stochastic volatility

We consider the problem of pricing European forward starting options in the presence of stochastic volatility. By performing a change of measure using the asset price at the time of strike determination as a numeraire, we derive a closed-form solution within Hestons stochastic volatility framework applying distribution properties of the volatility process. In this paper we develop a new and more suitable formula for pricing forward starting options. This formula allows to cover the smile effects observed in a Black-Scholes environment, in which the extreme exposure of forward starting options to volatility changes is ignored.Received: July 2004, Mathematics Subject Classification (2000): 91B28, 60G44, 60H30, 60E10JEL Classification: G13It is a pleasure to thank the anonymous referee for his valuable comments and suggestions on this paper. Furthermore, we would like to thank Holger Kraft, University of Kaiserslautern, and Alexander Giese, HypoVereinsbank AG Munich, for fruitful discussions and suggestions.     

The Stock Market Reaction to Investment Announcements: The Case of Individual Capital Expenditure Projects

In this paper we provide novel evidence about the market reaction to capital expenditure announcements in the UK using a sample of nearly 500 disclosures made between 1989 and 1991. First, we show that the market reaction to joint venture announcements is significantly positive, whilst similar announcements from individual companies do not elicit any response. Second, we find that the market reaction to single company investments is positively related to the size of the expenditure, but only for projects which immediately generate cash. Finally, we report that the variability in the market response to announcements which follow large cash inflows is significantly lower than the variability in investors' reactions to announcements which are not preceded by such inflows.     

转型经济背景下信任对新创企业资源获取的影响

转型经济背景下,新创企业需要面对复杂的不确定性和机会主义行为,这使得企业获取资源更加困难。信任是一种理想的非正式的市场治理机制,有助于新创企业在法律、法规等正式制度不能完全发挥作用的转型经济环境下,减少不确定性和机会主义行为的影响,获取更多关键性资源。     

Managing venture team relationships in corporate incubators: a case study of network dynamics and political rivalry in a high-tech incubator

This article addresses venture team relationships in an advanced high tech incubator through an analysis of the personal relationships of venture team members. During the study period of almost 2 years, the ventures were projected to grow and commercialise but, overall, they failed. Quantitative data collected in two rounds showed that commercial relationships remained weak while political relationships intensified. Qualitative follow-up interviews suggest that the political rivalry and low level of knowledge sharing between the ventures were further exacerbated by the individualistic-competitive structure of the incubator and weak management in some respects.     

起点公平、过程公平、结果公平与分配公平满意度*

深入研究居民对现阶段分配公平满意程度的认知、判断与评价,对于政府制定科学合理的调控政策、促进分配公平、提高居民满意程度、维护社会和谐与稳定具有十分重要的意义。本文基于浙江省11个地区958份居民家庭问卷调查数据,对居民收入分配不平等程度与分配公平满意度现状进行统计分析,构建Ordered Probit模型,从起点公平、过程公平、结果公平等方面对分配公平满意度的主要影响因素进行实证研究。研究结果表明：现阶段收入分配不平等程度较大,但居民对收入分配公平满意度相对较高。起点公平、过程公平、结果公平、人力资本、物质资本、社会保障对分配公平满意度有显著的正向影响。其中人力资本、起点公平、结果公平、社会保障对分配公平满意度的正向影响程度较大,过程公平对分配公平满意度的正向影响程度次之,而家庭劳动力人数、物质资本对分配公平满意度的正向影响程度较小。这一研究结果提供了重要的政策启示。     

论中国特色社会主义经济学的核心范畴

确立中国特色社会主义经济学的逻辑起点，必须突出它的特殊性，而不能照搬以往的经济学。迄今，所有的经济学由于其任务和宗旨不同大体可分四种类型、四个逻辑起点。中国特色社会主义经济学根据它的任务和宗旨，需要在科学社会主义实践逻辑的基础上，进行科学抽象，分析其矛盾特殊性的三个表现及中国的个性，揭示以社会主义本质为核。范畴和逻辑起点的理论规定性，进而全面展开，创立新的架构。     

Practicing effective knowledge sharing in international hotel joint ventures

Knowledge sharing can be described as the process by which individuals mutually exchange their knowledge and collaboratively generate new knowledge. Since international hotel joint venture partners typically possess skills in competing areas, this process of knowledge sharing is critical to the success of these alliances. Therefore, this article presents a framework that can be used to foster effective knowledge sharing at the individual joint venture manager level, at the relationship level between individuals, and across the entire organization.     

Termination clauses in partnerships

We show that when designing a partnership agreement partner firms may prefer not to specify how to allocate the commonly owned assets should there be an early termination of the contract. By not including such a clause, firms induce litigation before a Court with positive probability. Firms create this ex-post inefficiency in order to increase the levels of non-contractible investments, i.e. increase the ex-ante efficiency. The absence of an asset allocation clause works as a “discipline device” that mitigates the hold-up problem within the partnership. In our set-up, no other contract but that without an asset allocation clause can credibly create an ex-post inefficiency.