关于农产量抽样调查的应用

该文主要阐述了在农产量抽样调查的具体应用中应注意的一些问题,并用实例加以说明。     

论童话中的幻想美

童话是一种非写实的以幻想精神作为主要审美手段的文学品种。幻想在童话中起着举足轻重的作用,但童话中的幻想也同其他文学体裁一样是植根于现实生活的基础上,它追求的是一种“超自然”的艺术真实,能够丰富和提高少年儿童的幻想力。因此,其美学价值也是不可低估的。     

港口吞吐量抽样调查方案设计

讨论了抽样调查在港口吞吐量调查中的应用前景，分析了港口吞吐量抽样调查方案设计的各个环节，包括：方案设计的原则、技术方法、抽样公式、调查时间、分层确定、季节变动处理和非抽样误差控制等。     

The Larger Project within Fantasy Literature: the Lewis/Pullman Divide

This article deals with Philip Pullman's insistence on the importance of the creative power of stories in education and the need for children to think deeper about texts than the surface plot; the suitability for fantasy literature to be used for this ‘larger project’ and the current power of children's fantasy, leading to Pullman's winning of the Whitbread Prize; and Pullman's vehement rejection of links between His Dark Materials and C.S. Lewis's Narnia books. Both series are influenced by Paradise Lost but read from their own religious position: Lewis is the conservative traditionalist and Pullman the liberal reformer. In both, Christian allegory is used to encourage deeper readings of the works. Ultimately, Pullman's criticism of Narnia draws attention to similarities between the two series and the power of both to provoke challenging questions rather than straightforward answers.     

由科技期刊评价功能引发的思考——兼谈科技期刊公平竞争环境建设

科技期刊评价功能是一种潜在性功能.文章通过剖析关于“科技期刊评价功能”论述的几个关键词组,获得三方面启示,并得出以下结论:科技期刊学术评价功能的实现是要基于一定条件的;新传播媒体的出现将推动科技期刊公平竞争环境的建设;要正确处理好科技期刊管理和评价导向问题.     

井下电动铲运机早期故障的铁谱研究

油样铁谱监测技术对于各种摩擦故障的诊断十分敏感,它能准确地检测出系统中一些不正常磨损的轻微征兆。针对程潮铁矿井下电动铲运机的工作系统、传动系统、转向系统、制动系统等主要磨损部位,确定取样位置和周期,进行谱片的制做和分析,从而获得电动铲运机的磨损信息,以发现早期故障并及时处理,保障了电动铲运机高效安全运行。     

新疆高中课程改革实验的问题与建议

高中新课程改革样本学校课程改革已经有了实质性的举措,但在实施过程中依然存在着犹豫和怀疑,面临着诸多的问题和困难。文章就新疆高中课改实验的五个主要问题进行了探讨。     

Two-Level Dynamic Structural Equation Models with Small Samples

Advances in data collection have made intensive longitudinal data easier to collect, unlocking potential for methodological innovations to model such data. Dynamic structural equation modeling (DSEM) is one such methodology but recent studies have suggested that its small N performance is poor. This is problematic because small N data are omnipresent in empirical applications due to logistical and financial concerns associated with gathering many measurements on many people. In this paper, we discuss how previous studies considering small samples have focused on Bayesian methods with diffuse priors. The small sample literature has shown that diffuse priors may cause problems because they become unintentionally informative. Instead, we outline how researchers can create weakly informative admissible-range-restricted priors, even in the absence of previous studies. A simulation study shows that metrics like relative bias and non-null detection rates with these admissible-range-restricted priors improve small N properties of DSEM compared to diffuse priors.     

Graphical Extension of Sample Size Planning With AIPE on RMSEA Using R

Kelley and Lai (2011) recently proposed the use of accuracy in parameter estimation (AIPE) for sample size planning in structural equation modeling. The sample size that reaches the desired width for the confidence interval of root mean square error of approximation (RMSEA) is suggested. This study proposes a graphical extension with the AIPE approach, abbreviated as GAIPE, on RMSEA to facilitate sample size planning in structural equation modeling. GAIPE simultaneously displays the expected width of a confidence interval of RMSEA, the necessary sample size to reach the desired width, and the RMSEA values covered in the confidence interval. Power analysis for hypothesis tests related to RMSEA can also be integrated into the GAIPE framework to allow for a concurrent consideration of accuracy in estimation and statistical power to plan sample sizes. A package written in R has been developed to implement GAIPE. Examples and instructions for using the GAIPE package are presented to help readers make use of this flexible framework. With the capacity of incorporating information on accuracy in RMSEA estimation, values of RMSEA, and power for hypothesis testing on RMSEA in a single graphical representation, the GAIPE extension offers an informative and practical approach for sample size planning in structural equation modeling.     

选词批评与词法示范——论许昂霄的《晴雪雅词》、《词综偶评》

清代词选多为专业词家编纂,手眼甚高,在选本的功用上,往往侧重于推尊词体、开宗立派,而于示人词法方面则略有忽视.许昂霄坐馆于涉园张氏,因指导张氏子弟填词之需,编选《晴雪雅词》,评点《词综》,偏重于词法的讨论与示范.另外,《词综偶评》、《晴雪雅词》的选词理念和批评主张,对浙派思想既有继承,又有所批判,提出尚自然,贵性情等创作思想,来纠正浙西词派的偏至,一定意义上弥补了浙派的若干不足.