新时期我国高等教育存在的不和谐问题及其原因分析

高等教育诸多方面存在着不适应建设和谐社会的问题。这种不和谐问题主要是由于高等教育体系在诸多方面还不能完全满足个人或适应社会的需求。产生问题的原因主要是高等教育体系在教育资源、运行机制、教育教学、教师等方面存在诸多需要改进之处。所有这些问题产生的根源可归结为高等教育质量问题。     

中国城市化与社会结构变迁

文章从社会学角度探讨了过去30年以来中国的城市化及其引发的社会结构变迁。文章指出，在过去30年中国的城市化经历了飞速的发展，进入了快速城市化阶段，离基本城市化阶段越来越近，但由于中国独特的城乡制度以及行政管理体制，中国城市化呈现两种模式——主动城市化模式和被动城市化模式，并呈现多种城市化主体，而政府和企业则是中国城市化的主导性主体。这背后最主要的动力机制还是制度和利益，彰显出中国社会结构变迁趋势：在利益机制驱使下，中国社会渐渐地形成了城乡差别不断扩大、城市内部分化明显的利益分配格局；由于缺乏公开、公正、民主的配置机制，各个城市化主体之间的博弈大多屈从于弱肉强食的“丛林法则”，从而导致各种暴力冲突、相互仇视的问题，这在一定程度上破坏了城市社会运行秩序特别是支撑这些秩序的信任机制，显现出相当严重的合法性危机，对未来中国的城市化提出了严峻的挑战。为此，文章提出了中国未来城市化的几种可能的路径。     

Bootstrap Estimation of Benchmark Doses and Confidence Limits with Clustered Quantal Data

The benchmark dose (BMD) is an exposure level that would induce a small risk increase (BMR level) above the background. The BMD approach to deriving a reference dose for risk assessment of noncancer effects is advantageous in that the estimate of BMD is not restricted to experimental doses and utilizes most available dose-response information. To quantify statistical uncertainty of a BMD estimate, we often calculate and report its lower confidence limit (i.e., BMDL), and may even consider it as a more conservative alternative to BMD itself. Computation of BMDL may involve normal confidence limits to BMD in conjunction with the delta method. Therefore, factors, such as small sample size and nonlinearity in model parameters, can affect the performance of the delta method BMDL, and alternative methods are useful. In this article, we propose a bootstrap method to estimate BMDL utilizing a scheme that consists of a resampling of residuals after model fitting and a one-step formula for parameter estimation. We illustrate the method with clustered binary data from developmental toxicity experiments. Our analysis shows that with moderately elevated dose-response data, the distribution of BMD estimator tends to be left-skewed and bootstrap BMDL s are smaller than the delta method BMDL s on average, hence quantifying risk more conservatively. Statistically, the bootstrap BMDL quantifies the uncertainty of the true BMD more honestly than the delta method BMDL as its coverage probability is closer to the nominal level than that of delta method BMDL. We find that BMD and BMDL estimates are generally insensitive to model choices provided that the models fit the data comparably well near the region of BMD. Our analysis also suggests that, in the presence of a significant and moderately strong dose-response relationship, the developmental toxicity experiments under the standard protocol support dose-response assessment at 5% BMR for BMD and 95% confidence level for BMDL.     

矩阵方程XA＝B的亚（半）正定自共轭四元数矩阵解

给出了四元数体Ｑ上ｎ×ｎ分块矩阵为亚（半）正定自共轭矩阵的一个充要条件，进而给出了Ｑ上矩阵方程ＸＡｎｍ＝Ｂｎｍ有亚（半）正定自共轭四元数矩阵解的充要条件及解集合的显式表示，从而推广改进了数城上线性方程组的反问题及矩阵反问题的相应结果．     

建设项目的专业技术 服务风险管理浅析

本文分析了建设项目中专业技术服务的潜在风险，探讨了风险管理的内容、途径和方法，简述了专业责任保险的特点和原则，指出了在我国开展专业责任保险的紧迫性。     

国有无形资产流失问题探讨

文章根据经济全球化和知识化的客观要求,在分析国有无形资产流失的特征、途径的基础上,从强化观念、建立机构、完善制度、制定战略、营造环境等方面提出了防止国有无形资产流失的一系列对策。     

从梁启超文化思想变迁看中国文化前景

梁启超是近代中国集中国现代化变革的先驱者和文化保守主义运动肇基人于一身的复杂人物，与多变的时代一样，其文化思想也几经变迁，他处心积虑几十年探索中西文化问题、传统与现代化问题，给后人提供了极富价值的理论思考。中国文化的前景必然是选择现代化，一方面它将最大限度地保持自己的民族特色，另一方面最大限度且毫无条件地吸收一切先进的东西，实现创造性的综合与再铸。     

《蒙特利尔公约》下的赔偿责任体系及相关问题

1999年《蒙特利尔公约》随着美国作为第30个国家的加入,已于2003年11月4日正式生效。经我国人民代表大会批准,公约于2005年7月31日对我国生效。本文通过对《蒙特利尔公约》与其之前的公约(华沙公约体系和IATA责任体制)进行比较,阐述了公约的重要意义及重要新增内容,探讨了公约相关问题。     

腊八趣话

“腊八”,即农历的十二月初八日。它是中国古代极为重要的传统节日。从时序上看,过了腊八,春节就指日可待了。农历的十二月称“腊月”。“腊与“猎”字通。其原始义为:人们在用猎获的牺牲举行祭礼,驱邪避灾,纳福迎祥。《礼记·效特牲》中有:“伊耆氏始为蜡。蜡也者,索也岁十二月,合聚万物而索飨之也的记载。但腊月初八日作为一个节日,是从南北朝才渐至成型的。戎昱有一首《桂州腊夜》的诗:坐到三更尽,归仍万里赊。雪声偏傍竹,寒梦不离家。晓角分残漏,孤灯落碎花。二年随骠骑,辛苦向天涯。这是作者腊夜的怀乡之作。羁之思,人生况味,溢于其间…     

A survey of the family planning work done in Dongguan County

The total fertility rate of women of childbearing age of Dongguan County in China has been decreasing gradually from 5.9 during the period following the liberation in 1949 to 2.05 in 1982. In order to encourage young couples to implement the policy of family planning consciously, the people's government of Dongguan county decided in July 1980 that all cadres and employees in county towns who received 1-child certificates would be exempted from house rent of 45 square meters from the time they get their certificates and would be allocated a living space of a 2-children family until their children reached age 16. It also stipulated that every couple could enjoy 1 month's holiday every year for 3 years and during the holiday, their salary, bonus and rate of attendance would not be affected. Because women bear less children today, they are relieved from heavy household chores and become the main working force in collective production. As a result, the development of town-run enterprises was stimulated and the total industrial output value of these enterprises increased. The average monthly salary of each female worker is about 100 yuan. In 1984, the average income per capita of the country rose to 649.2 yuan. The implementation of family planning work has eased the tension in the education field. Previously, because of the large number of school-age children in rural areas, teachers had to teach 2 classes. In the past 4 years, great emphasis was laid on intellectual investment. During this period, 2351 schools were built and several fundraising projects were implemented. Since 1981, more than 200 new running water projects were built, and new public services have been developed, including old age homes.