驻波演示实验的改进

本文介绍了驻波演示实验的改进装置和制作方法，并阐述了用修正值测波长的物理意义。     

弱相关模型中的分块拟回归

为了减少计算复杂性,在计算机试验设计中,最近人们提出了一种新的统计方法--拟回归Owen(2000),An and Owen(2001)).在独立同分布模型中,拟回归不仅能提高计算速度,而且有较好的统计性质.然而,对相关数据模型,这种方法的统计性质并不好.针对这一问题,在不增加计算复杂性的条件下,本文提出一种分块拟回归方法.我们研究分块拟回归的小样本和大样本性质,如无偏性、均方收敛性.强收敛性和渐近正态性.结果表明分块拟回归比原拟回归渐近有效.本文还讨论了曲线拟合的性质,指出了分块拟回归(包括原拟回归)在高维问题中的缺陷,为改善曲线拟合,我们还提出一种修正分块拟回归.研究表明,在高维问题中,修正分块拟回归是十分有效的.     

中小学心理教育的若干思考

中小学心理教育的目标是促进学生的心理发展，优化学生的心理生活，为学生追求完满的生活作准备。中小学心理教育必须依据心理教育的特点和学生的心理发展状态及需要，科学地组织心理教育过程，通过提高教师的心理教育能力，科学地选择心理教育的内容，善用各种心理教育的途径和方法，努力开发校本资源，才能保证心理教育行之有效。     

Four New Corrected Statistics for SEM With Small Samples and Nonnormally Distributed Data

When the assumption of multivariate normality is violated and the sample sizes are relatively small, existing test statistics such as the likelihood ratio statistic and Satorra–Bentler’s rescaled and adjusted statistics often fail to provide reliable assessment of overall model fit. This article proposes four new corrected statistics, aiming for better model evaluation with nonnormally distributed data at small sample sizes. A Monte Carlo study is conducted to compare the performances of the four corrected statistics against those of existing statistics regarding Type I error rate. Results show that the performances of the four new statistics are relatively stable compared with those of existing statistics. In particular, Type I error rates of a new statistic are close to the nominal level across all sample sizes under a condition of asymptotic robustness. Other new statistics also exhibit improved Type I error control, especially with nonnormally distributed data at small sample sizes.     

BD基态分子(X1∑+)的结构与势能函数

采用量子力学从头算方法,运用高级电子相关偶合簇CCSD(T)/6-311 G(3df,2pd)研究了BD分子基态的结构与势能函数,计算其力常数(f2、f3、f4)和光谱参数(ωe、ωeχe、Be、αe、De),结果与实验光谱数据吻合较好。这表明BD分子基态的势能函数可用经修正的Murrell-Sorbie C6函数表示。     

国家图书馆藏南宋浙本《管子》考略

现今保存最早的《管子》,是南宋绍兴年间具杨忱《序》的浙江刻本。此本经文征明、黄丕烈诸位藏书家之手,传至铁琴铜剑楼,现存于国家图书馆。避讳从赵氏宗室的远祖到宋仁宗;用字多保存古字古义,颇有古本风貌;内容上能够补充明初刘绩《管子补注》本的不足;文字上能够订正明刘绩本和赵用贤《管韩合刻》本的讹误,对赵用贤本的刊印具有重大影响。清代学者陆贻典对此本评价甚高,并用以校对明刻刘绩本。     

计算机应用的校本培训

依据自己的体会，总结了计算机应用技术的校本培训应重点解决的问题。     

心理矫治在社区矫正中的作用

分析矫正对象的不良情绪与心理困扰、排斥与不合作心态、低自我认同及异常人格与行为倾向的心理特点,指出了心理矫治在社区矫正中的积极作用,帮助矫正对象自主自愿接受矫正,减缓矫正对象的心理危机,提高自我认同感,以此优化社区矫正的效果。     

Prevalence of insulin resistance in first degree relatives of type-2 diabetes mellitus patients: A prospective study in north Indian population

A total of 172 first degree relatives (FDRs) and 178 controls were included in this study. All the cases and controls were subjected to various anthropometric measurements, fasting and postprandial glucose estimation, fasting insulin measurement and fasting lipid profile. Results revealed the prevalence of Impaired Fasting Glucose (IFG) (cases 37% Vs controls 11.6%), Impaired Glucose Tolerance (IGT) (cases 34.3% Vs controls 11.2%) and diabetes (cases 11.05% controls 3.37%) was significantly higher in first degree relatives. Insulin resistance was measured using various methods, which included fasting plasma insulin (FPI), Homeostasis Model Assessment for Insulin Resistance (HOMA_IR), insulin sensitivity index (ISI) (Mffm/l). Prevalence of insulin resistance (Insulin Resistance) as observed comparing FPI and HOMA_IR in cases and controls was 43.6% and 11.24% (P=0.005) and 37.8% and 12.47% (P=0.000) respectively. Prevalence of IR (Insulin Resistance) observed in cases having Normal Glucose Tolerance (NGT), Impaired Fasting Glucose (IFG), Impaired Glucose Tolerance (IGT) and diabetes mellitus measuring FPI Vs HOMA_IR was 37.5% vs 30.2%, 45% vs 40%, 38.98% vs 37.28% and 36.84% vs 31.57% as accordingly. However, ISI (Mffm/l) was not found to be a promising index for IR due to its poor specificity. Though HOMA is taken as gold standard for measurement of IR globally, our study observed fasting plasma insulin representing high sensitivity (89.7%) and specificity (93.3%) as compared to HOMA. Thus FPI had emerged in this work as a simple and reliable test for diagnosing insulin resistance across the population susceptible to develop diabetes including FDRs.     

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在评述肖自力和张炎烈学术观点的基础上,剖析等级结构紊乱的原因,并提出一种易于操作的等级结构方案。