双交错Millitron慢波系统的实验研究

讨论了双交错Millitron慢波系统的设计方法,并采用通过式谐振法对双交错Millitron的色散特性进行了实验研究,给出了实验结果,并和作者所得到的理论结果[4]进行了比较,分析了出现误盖的原因。     

基于双恒流源法的高精度应变测量技术

提出了一种新颖的基于双恒流源法六端比例测量原理的应变测量技术,介绍了其测量原理及误差分析和校准技术,实现了高精度应变测量。给出了利用该测量原理设计的多通道应变仪测试结果。实验室测试及在某大型离心载荷试验中运行表明,该应变仪具有较高的测量精度、稳定性、抗干扰性和可靠性,其设计原理和方法对于工程设计与应用具有一定的参考价值。     

An empirical likelihood goodness-of-fit test for time series

Summary. Standard goodness-of-fit tests for a parametric regression model against a series of nonparametric alternatives are based on residuals arising from a fitted model. When a parametric regression model is compared with a nonparametric model, goodness-of-fit testing can be naturally approached by evaluating the likelihood of the parametric model within a nonparametric framework. We employ the empirical likelihood for an α -mixing process to formulate a test statistic that measures the goodness of fit of a parametric regression model. The technique is based on a comparison with kernel smoothing estimators. The empirical likelihood formulation of the test has two attractive features. One is its automatic consideration of the variation that is associated with the nonparametric fit due to empirical likelihood's ability to Studentize internally. The other is that the asymptotic distribution of the test statistic is free of unknown parameters, avoiding plug-in estimation. We apply the test to a discretized diffusion model which has recently been considered in financial market analysis.     

A circular-cone test for testing homogeneity against a simple tree order

Several methods exist for the problem of testing the equality of several treatments against the one-sided alternative that the treatments are better than the control. These methods include Dunnett's test, Bartholomew's likelihood-ratio test, the Abelson-Tukey-Schaafsma-Smid optimal-contrast test, and the multiple-contrast test of Mukerjee, Robertson, and Wright. A new test is proposed based on an approximation of the likelihood-ratio test of Bartholomew. This test involves using a circular cone in place of the alternative-hypothesis cone. The circular-cone test has excellent power characteristics similar to those of Bartholomew's test. Moreover, it has the advantages of being simpler to compute and may be used with unequal sample sizes.     

用Powell法求颗粒尺寸分布

本文用最优化理论中的Powell直接法求激光粒度仪中的颗粒尺寸分布。数值模拟及对标准颗粒的实测表明,该算法的计算精度高,能较好地解决粒度仪通常存在的计算结果随初始设定值变化的多值性问题。     

公共计算机基础教学改革的新构想

公共计算机基础教学模式和教学方法等问题,已引起人们的关注。根据客观实际,可采用以下几点改革措施:参考学习使用家用电器的方法,学习计算机系统的各种基本操作;对不同专业的学生进行有针对性的办公信息自动化的教学;运用问题驱动式的教学方法,以选修课的形式进行计算机应用技术的教学。使学生学会分析问题、解决问题、扩展知识结构、开展信息处理工作的方法。     

等效法在物理教学中应用规律的探讨

本文研究了等效法在中学物理教学中的应用，并结合一些具体实例进行了分析，对中学物理教学有一定指导意义。     

微观辨证整体化之浅议

对微观辨证整体化研究 ,认为目前一是应该对大量的前期研究工作进行总结 ,对异病同证者及同病异证者的宏观症状进行循证医学研究 ;对异病同证者及同病异证者的微观指标进行循证医学研究 ;最终寻求宏观整体指标与微观整体指标的结合 ,从而使微观辨证升华到微观层次上的整体化水平。二是进行基因组学与中医证候相关性研究 ,寻找与中医证候相关的基因组 ,从而实现中医证候研究的基因水平上的整体化。     

议股权投资差额会计核算

现行会计制度中采用权益法核算长期股权投资时,投资支付的价款高于或低于应享有份额而产生的差额采用的会计处理方法不尽合理,笔者提出自己的建议。     

浅议案例法在审计课教学中的应用

案例法教学具有强化能力培养,重视多项交流,提高学习主动性等特点.审计课教学中运用案例法要做好案例教学的前期准备、中期工作以及后期总结.案例编排要注意科学性,使学生理解案例分析的多样性;课堂教学中要正确引导,坚持以学生为主,坚持集体参与,坚持鼓励为主;学生成绩评价必须将理论考核与能力表现有机结合,使评价真实有效.