“天赋异禀”、“熟能生巧”还是“日久生情”*——基于中国证券分析师预测能力的经验证据

本文选取2001—2013年证券分析师的预测数据作为研究样本,研究证券分析师的预测能力随时间变化的现象及机理。实证检验表明：（1）分析师的预测能力随着经验积累而显著提高;（2）“新财富”最佳分析师较之于一般分析师并未表现出更强的预测能力（即并不存在“天赋异禀”）;（3）证券分析师预测能力随经验积累而提高并非由于研究能力的提升（即“熟能生巧”）,而是通过所在证券公司的平台与所跟进的公司建立了良好的合作关系（即“日久生情”）。本文不仅丰富了关于影响证券分析师预测能力因素的相关实证研究,同时创造性地进一步剖析了证券分析师预测能力随经验积累提高的内在机理,其结论对于理解分析师学习成长机制、促进中小投资者保护以及推动中国证券市场理性发展具有重要意义。     

高职会计专业实践教学的现状与水平提高途径

文章以会计专业学生必须具有过硬的会计技能和实践经验为出发点,探讨高职学校在会计专业教学过程中如何提高实践教学水平的问题。     

Technological substitution in the United States pulp and paper industry: The sulfate pulping process

This paper presents an econometric analysis of the diffusion of the sulfate pulping process throughout the U.S. pulp and paper industry. A dynamic equilibrium, Gompertz diffusion function is employed to derive a multivariate estimation model which incorporates more information than the traditional approach of estimating the growth rate function alone. The empirical results suggest that the econometric approach provides a useful integration of the technological diffusion process and the comparative static theory of demand. The sulfate pulping process is projected to continue capturing market share at a relatively rapid rate, and could account for 90% or more of total U.S. woodpulp production by the year 2000.     

Telecommuting: The employee's perspective

Available telecommunication technology enables the substitution of commuting by “telecommuting”, or working at home, for a wide range of white collar occupations. Research on the potential of this phenomenon along with some ongoing experiments point at an array of social and personal benefits that may be realized by this working arrangement. An assessment of the possible implications of work-at-home on the individual employee indicate that the burden on him or her may be greater than the benefits accrued and, therefore, the journey to work may be a more desirable act than traditionally perceived by transportation planners. This paper focuses on two aspects of the work-at-home arrangement. Previous research on the sociology of work as well as preliminary empirical results indicate that 1) social interaction at work and 2) the need to separate home and work roles are important elements for the individual worker. The fact that work-at-home will affect these attributes, is likely to discourage wide-scale transition to this arrangement, despite the availability of the technology. Most research published to date on the subject is qualitative in nature, as only little empirical evidence is available. The objective of this paper is to stress, based on a wide literature review, the need for a thorough behavioral evaluation of the available technology to provide a sound basis for decision making on implementation of the technology.     

谈如何提高修志队伍的素质

一部志书质量高低取决于修志队伍的素质水平,提高修志队伍的素质是二轮修志工作的基础工程和首要任务。文章从修志队伍人员类型的介绍入手,论述了修志队伍建设存在的问题,分析了修志人员应具备的素质,并研究了提高修志队伍素质的方法。     

锦州市“以港兴市”发展战略的思考

当今世界许多国家的经济发展实践证明,利用港口经济,促进产业结构调整和促进资源配置优化,是区域经济发展取得成功的重要方式。锦州市自2003年提出＂以港兴市＂的发展战略,因此研究锦州市＂以港兴市＂发展战略面临的机会和威胁、优势和劣势,对于科学认识城市发展战略,发展锦州区域经济与建设和谐社会,具有重要的现实意义。     

Factors influencing applicant willingness to apply for the advertised job opening: the mediational role of credibility,satisfaction and attraction

The present study examined the effects of the information given in a job advertisement on the potential applicants' willingness to apply for the job opening with the mediating roles of credibility of and satisfaction from the information given in the ad and attraction to the organization. One hundred and fifty-four students were randomly assigned to the three different versions of job advertisement. Additionally, a questionnaire package was given to each participant. The results showed that advertisement type affected the willingness of potential applicants to apply for the job and this relationship was mediated by credibility.     

云南长防林体系建设中几个问题的探讨

本文就云南省长防林体系建设中存在的认识问题,指导思想、政策、资金投入及有关技术问题,进行分析。提出相应的对策和意见。     

Option strategies: Good deals and margin calls

We provide evidence that trading frictions have an economically important impact on the execution and the profitability of option strategies that involve writing out-of-the-money put options. Margin requirements, in particular, limit the notional amount of capital that can be invested in the strategies and force investors to close down positions and realize losses. The economic effect of frictions is stronger when the investor seeks to write options more aggressively. Although margins are effective in reducing counterparty default risk, they also impose a friction that limits investors from supplying liquidity to the option market.     

西气东输工程用感应加热弯管技术条件探讨

在对国外X70管线弯管技术条件进行调查分析与研究的基础上，对其中的几个关键技术问题包括母管成分，弯管的制造工艺和技术路线，强度与韧性要求，屈强比，Cu污染问题等进行了讨论。一些观点在西气东输感应加弯管技术条件中得到应用。