城市轨道交通对其沿线住宅价格的影响分析——以北京市地铁四号线和八通线为例

本文以北京地铁四号线和八通线为例,从时空两个方面研究了轨道交通在规划建设前后对其沿线住宅价格的影响.作者利用实际调查收集到的这两条地铁沿线3km范围内的1200个住宅项目的均价数据(1998 - 2009年),利用空间自相关分析和波谱分析度量了轨道交通对其沿线房地产价格变化的影响程度、该影响随时间的变化与空间距离的衰减...     

环氧乙烷反应器泄漏原因分析与处理

通过对环氧乙烷反应器C-11环焊缝开裂现象的分析,确认低合金高强度淬火钢高残余应力焊缝在高温锅炉水中的应力腐蚀是造成反应器环焊缝开裂的主要原因。采用打磨消除裂纹后,用低匹配手工氩弧焊打底、等强度焊条手工电弧焊填充和盖面,焊前150℃预热和焊后350℃消氢等焊接工艺,对焊缝进行了修复。在工艺控制方面采取更换药剂以降低钠离子和溶解氧质量浓度以减少引起应力腐蚀的锅炉水溶质。     

加快军工企业股改的机制与对策分析

结合军工企业股份制改造的现状,按照"分类指导、循序渐进、稳步推进"的原则,从市场机制、军民结合机制、产学研结合机制和政府政策保障机制等方面入手,加快军工企业的股份制改造。并通过培育有效的国有资产投资主体、加强军工企业制度创新、创新军工企业治理结构,以及积极推进政府职能转变来确保军工企业股份制改造的实现。     

我国耕地变化驱动力研究进展：驱动因子与驱动机理

[目的]综述耕地数量变化的驱动因子与驱动机理,为未来丰富相关研究以及针对性地制定耕地保护对策提供参考。[方法]文章主要应用了文献分析法、分类统计法和比较分析法。[结果](1)耕地数量变化的驱动因子主要包括自然因子和社会经济因子,地形、气候等自然因子往往在较长时间内发挥作用,经济状况、区位条件等社会经济因子在短期内对耕地变化的影响较大,国家政策是特殊的社会经济因子。(2)自然因子和社会经济因子分别通过改变土地生产潜力、影响耕地和建设用地平衡来驱动耕地数量变化,社会经济因子中的政策因子通过强化或减弱土地某项功能对耕地变化产生影响。(3)自然因子对耕地数量变化的驱动作用在快速城镇化地区、粮食主产地区和生态脆弱地区依次增强,社会经济因子的驱动作用依次减弱,政策因子是所有区域耕地数量变化的主要驱动因子。(4)快速城镇化地区、粮食主产地区和生态脆弱地区的耕地数量变化分别主要受到建设占用、粮食生产和经济发展压力、自然条件限制及退耕还林驱动。[结论]探究耕地变化的驱动因子和驱动机理是提高耕地管理效率的有效途径,未来研究应当向全面分析耕地变化内涵,定量研究政策因子,衔接耕地保护对策制定等方向发展。     

谈我国经济社会可持续发展的四大问题

实现我国经济社会的可持续发展,既是贯彻落实科学发展观的必然要求,也是全面建设小康社会的一项重要战略目标。当前,在推进我国经济社会可持续发展的过程中,需要特别关注就业、通货膨胀、自主创新、循环经济等方面问题。     

Financial research in Canada: A long‐term assessment of journal publications

We examined the financial research among Canadian academic institutions between 1990–2008. Overall, Canadian institutions contribute 3.79% of all publications in 23 leading finance journals. The five most productive universities are the University of British Columbia, the University of Toronto, Wilfrid Laurier University, McGill University, and the University of Alberta. The research productivity of Canadian universities is comparable to their counterparts in Australia and the UK. However, when examining only the top four finance journals, Canadian universities clearly outperform their counterparts in Australia and the UK. In addition, we find that the sufficiency of research funding, the size of faculty, as well as the assembly of a cohort of research‐active faculty contribute to the research productivity of finance programs in Canada. Copyright © 2010 ASAC. Published by John Wiley & Sons, Ltd.     

道德风险视角下的高校教师激励机制研究

高校教师是高等院校的教学与科研任务的具体承担者，因此对于提高高校教育与科研质量而言，如何克服信息不对称带来的困境、激励教师为所承担的任务积极、努力工作，是一个关键问题。本论文在委托代理视角下研究分析了针对高校教师在完成教学科研任务时的道德风险的产生形式，并探讨了控制其道德风险的激励策略，发现其道德风险的控制效果受到了检测效果的大小和期望聘用年限长短的重要影响。本论文给出了定量描述的影响机制，并对结论的有效性进行了算例分析。     

入世与现代企业制度的建立

本文系全国人大常委、北京大学教授、世界贸易组织研究会高级顾问厉以宁在2000年10月北京 WTO 第三期培训班上的讲课。     

试论邮政综合计算机网运行维护队伍建设

针对邮政综合计算机网运行维护工作的现状,文章分析了运行维护队伍不稳定的原因,提出了在邮政综合计算机网不同级别的信息中心配备不同级别技术人员,建立人才资源共享和技术资源共享体制的建议。     

Simulation of Controlled Financial Statements

Many accounting and finance studies investigate the time-series properties of historical accounting records from corporate financial statements. Some of them have recognized the potential benefits of using disaggregated monthly accounting records. Disaggregated data are beneficial because one can use more data points within a relatively short period of time, thus reducing the chance of structural change. The added data points and reduction of the number of variables needed to accommodate potential structural changes can enhance the statistical power of any subsequent analysis. The use of disaggregated data may also improve the predictive ability of time-series analytic approaches. In order to systematically assess various financial indicators and investigate the effects of different organizational characteristics, a large number of monthly statements with certain predetermined characteristics are desirable. However, such statements are not readily available. At best, monthly statements can be obtained from a few volunteer companies. Under this circumstance, simulation of controlled financial statements seems to be a reasonable solution. This research explores a methodology for simulating complete monthly financial statements based on actual company quarterly financial statements. The methodology incorporates the interrelationships among accounting numbers and the effects of exogenous variables. To test the empirical validity and whether the monthly results derived from the quarterly data can accurately track the real monthly figures, we compare the results simulated by the proposed method and those generated by a naive random walk model. We test both complete financial statements for three companies and sales statistics from the retail industry. The results of both tests demonstrate the superiority of the method proposed by this study over a naive random walk model. The proposed simulation method provides an opportunity for researchers to examine the time-series properties of financial statement elements by using the monthly data of a large number of companies. In addition, the simulation approach allows researchers to perform cross sectional comparisons on companies with different characteristics (e.g., sales behavior patterns and degrees of stability) in their financial and economic activities. Moreover, it enables the researchers to manipulate some of these characteristics to test various hypotheses.