创新理念推进南宁市印刷企业又好又快发展

南宁市的印刷企业是南宁市文化产业发展的一支重要力量。作为管理部门的新闻出版局,应该创新理念,搞好服务,帮助印刷企业解决发展的困难和问题,为印刷企业创造良好的发展环境,着力推进南宁市印刷企业全面快速发展。     

Objective Tests versus Subjective tests

objective test has only one correct answer, while subjective test has a range of possible answers. Because of this feature, reliability will not be difficult to achieve in the marking of the objective item, while the marking of the subjective items is reliable. On the whole, a good test must contain both subjective and objective test items.     

区域科技创新运行机制与评价指标体系研究

区域科技创新是企业生存和发展的根本保证,也是一个地区、一个国家经济增长的主要根源和最直接动力。笔者通过分析区域科技创新的内涵、结构及其运行轨迹,指出影响其运行机制的内在因素和外部环境,并用模糊数学的方法,构建了区域科技创新的评价指标体系。     

海洋人类学的文化生态视角

在海洋人类学发展的早期,文化生态范式一直主导着海洋人类学的研究,并且直到今天仍有很重要的影响。海洋人类学的文化生态视角认为,海洋生态系统是产生特殊的海洋社会文化的原因,换而言之,也就是说海洋环境的限制和不确定性会导致人们对于生活特定的应对方式和适应策略,从而产生一个不同于陆地社会的社会文化类型。但是随着海洋人类学自身的发展,从20世纪80年代开始,学者们开始意识到文化生态范式的缺陷,并逐渐转向其他视角和主题的海洋人类学研究。     

积极应对外商投资对我国环境造成的污染

实践表明,利用外商投资对我国经济发展起到了关键的作用,但由于处在经济发展中的被动地位,发展中国家在国际分工中往往以牺牲环境为代价换取经济发展.这不仅造成了局部环境的恶化,也严重影响了我国经济的可持续发展.在利用外资中,如何保持高速发展,在扩大开放中保持良性循环,已成为当务之急.     

A simulation study on power comparisons for group sequential tests of non-parametric statistics

In this article, a group sequential test (GST) of non-parametric statistics for survival data is briefly reviewed. An asymptotic joint distribution of the test statistics, obtained after each interim analysis, is given to illustrate the applicability of the critical values of the GST procedures. It should be noted that censored observations are generally seen in survival data. Therefore, if one makes power calculations irrespective of censoring, reliable results may not be achieved, due to the lack of information about the censoring structure. A wide simulation study, covering different censoring rates and tied observations, is conducted to make the power comparisons under various scenarios. The simulation results are interpreted and compared with the results obtained by using power analysis and sample size (PASS) software.     

Book Reviews

No abstract available for this article.     

A modified Kolmogorov-Smirnov test for a rectangular distribution with unknown parameters: Computation of the distribution of the test statistic

A recursive scheme for the calculation of the distribution of the test statistic of a modified Kolmogorov-Smirnov-test for a rectangular distribution with unknown parameters is given.