知识经济与高等教育改革

知识经济与高等教育密不可分 ,没有现代化高等教育就不能产生知识经济。在知识经济时代 ,教育特别是高等教育将发挥以往时代从未有过的关键性作用。深化高教改革已成必然     

增长曲线模型非齐次线性估计的可容许性

讨论增长曲线模型Y =X1BX2 +ε中回归矩阵B的函数C1BC2 的估计L1YL2 +A ,在矩阵损失 (LT2 L1)Y +A - (ST2 XT2 S1X1)B (LT2 L1)Y +A - (ST2 XT2 S1X1)B T 下 ,我们得到了非齐次线性估计L1YL2 +A在非齐次线性估计类Г ={L1YL2 +A|L1:t×p ,L2 ;n×n ,A :t×s均为已知实阵 }中可容许的充要条件 :L1YL2在Г0 ={L1YL2 |L1:t×p ,L2 :n×s均为已知实阵 }中容许且当LT2 XT2 L1X1=ST2 XT2 S1X1时有A =0。     

谈班主任的工作方法

根据班主任工作实践 ,总结出以下工作方法 :以身作则 ,身教重于言教 ;以科学家的科学精神教育学生 ,激励学生进步 ;深入到学生中去 ,注重调查研究 ;做好分类教育管理 ;狠抓思想教育 ,重视日常管理。此外 ,从重视学习 ,提高整体素质 ;抓好班风建设 ,促优良学风形成 ;严爱相济 ,循循善诱等几个方面 ,介绍了工作体会     

Sample sizes for estimation in clinical research

A sample size justification should be given for all clinical investigations. However, sometimes the objective of a trial is to estimate an effect with a view to planning a later definitive study. This paper describes the calculations for designing studies where one wishes to adopt an estimation approach through using confidence intervals around the overall response. Calculations are given for data anticipated to take a Normal form. Copyright © 2004 John Wiley & Sons, Ltd.     

A Bayesian Adjustment for Covariate Misclassification with Correlated Binary Outcome Data

Estimated associations between an outcome variable and misclassified covariates tend to be biased when the methods of estimation that ignore the classification error are applied. Available methods to account for misclassification often require the use of a validation sample (i.e. a gold standard). In practice, however, such a gold standard may be unavailable or impractical. We propose a Bayesian approach to adjust for misclassification in a binary covariate in the random effect logistic model when a gold standard is not available. This Markov Chain Monte Carlo (MCMC) approach uses two imperfect measures of a dichotomous exposure under the assumptions of conditional independence and non-differential misclassification. A simulated numerical example and a real clinical example are given to illustrate the proposed approach. Our results suggest that the estimated log odds of inpatient care and the corresponding standard deviation are much larger in our proposed method compared with the models ignoring misclassification. Ignoring misclassification produces downwardly biased estimates and underestimate uncertainty.     

欠发达地区经济发展研究

经济欠发达地区在我国土地面积中占有很大的比重,它的发展直接影响着国家经济发展的速度和综合国力的提高,千方百计促进欠发达地区的经济发展意义重大.然而,我国幅员辽阔,欠发达地区情况各异,如何发展这些地区是人们不断探索的重大课题.我们以自己的观点从某个侧面初步予以探索,以期与广大学者们共同探讨一些可行的发展途径,推动欠发达地区经济的繁荣.     

刍议当前农村女性剩余劳动力转化过程中的问题

农村女性剩余劳动力在农业向非农业转化过程中，出现了年龄低龄化趋向、文化程度以初中文化为主、专门技术的掌握程度低、劳动权益保护状况堪忧等状况。针对上述现象，国家应通过法律、政策的制定，对处于就业弱势的农村女性予以更多的考虑、照顾；通过增加农村女性受教育的机会和建立具有性别倾斜的就业培训和就业指导体系，增加农村女性就业机会。     

从贵州省第六届民运会看贵州少数民族体育的发展

通过对贵州省第六届民运会的实地调查及与历届全国民运会和贵州省民运会的比较分析,并提出了值得思考的对策,旨在促进贵州少数民族体育的发展,为当好第九届全国民运会东道主做好准备.