A stratified unrelated question randomized response model using Neyman allocation

This paper applies stratified random sampling using Neyman allocation to Mangat et al. (1992 Mangat, N.S., Singh, R., Singh, S. (1992). An improved unrelated question randomized response strategy. Cal. Stat. Assoc. Bull. 42:277–281.[Crossref] , [Google Scholar]) unrelated question randomized response (RR) strategy for both completely truthful reporting and less than completely truthful reporting. It is shown that, for the prior information given, our new model is more efficient in terms of variance (in the case of completely truthful reporting) and mean square error (in terms of less than completely truthful reporting) than Kim and Elam's (2007 Kim, J.M., Elam, M.E. (2007). A stratified unrelated question randomized response model. Stat. Papers 48:215–233.[Crossref], [Web of Science ®] , [Google Scholar]) model. Numerical illustrations and graphs are also given in support of the present study.     

An optional randomized response model for estimating a rare sensitive attribute using Poisson distribution

The crux of this article is to estimate the mean of the number of persons possessing a rare sensitive attribute based on the Mangat (1991 Mangat, N.S. (1991). An optional randomized response sampling technique using non–stigmatized attribute. Statistica. 51(4):595–602. [Google Scholar]) randomization device by utilizing the Poisson distribution in simple random sampling and stratified sampling. Properties of the proposed randomized response (RR) model have been studied along with recommendations. It is also shown that the proposed model is more efficient than that of Land et al. (2011 Land, M., Singh, S., Sedory, S.A. (2011). Estimation of a rare attribute using Poisson distribution. Statistics. 46(3):351–360.[Taylor &; Francis Online], [Web of Science ®] , [Google Scholar]) in simple random sampling and that of Lee et al. (2013 Lee, G.S., Uhm, D., Kim, J.M. (2013). Estimation of a rare sensitive attribute in stratified sampling using Poisson distribution. Statistics. 47(3):575–589.[Taylor &; Francis Online], [Web of Science ®] , [Google Scholar]) in stratified random sampling when the proportion of persons possessing a rare unrelated attribute is known. Numerical illustrations are also given in support of the present study.     

Simultaneous decomposition of the variance by sources and subgroups – new insights

There are two types of decompositions: of linear combinations of random variables into contributions of individual variables (sources) and associations between them, and of populations into contributions of their subpopulations. Simultaneous treatment of the two types is called for, which takes into account the correlations between sources within subpopulations and between subpopulation means. The expected values of the subcomponents are derived and their sensitivity to correlations among sources within groups and among source group means is conducted. An example is provided, in which the correlations contribute 20--25% to total variability. This additional information is hidden when decompositions are not simultaneous.     

论后现代技术的品性和实践

以信息、语言、记忆工业和时间物体为代表的后现代技术,批判现代技术的机械化、商品化、功利化、权力化人类中心主义以及物化和异化带来的各类难以预测的事故和灾难。主张在非祛魅性、多元性、生态性和非决定论的后现代科学基础上,根除"技术官僚主义",推动后现代技术往更加人道、民主、自由、智慧和艺术的方向发展,将技术进一步人性化和真善美一体化,使其真正为新人民和全人类的文明服务。     

中国省级政府的财政支出效率研究——基于DEA方法分析

利用数据包络分析方法实证研究了2001年和2006年中国30个省级政府的财政支出效率。结果表明,中国省级政府的财政支出效率总体上有进一步提升的空间;非参数检验方法证明了财政支出效率在东部、中部和西部地区之间存在显著差异性。各省级政府应该保持适当的财政支出规模,不断优化财政支出结构,提高财政资金的使用效率;中央政府的转移支付应适当向中西部不发达省份倾斜,推行区域均衡发展战略。     

简论教育技术在《模拟电子技术》课程中的运用

多媒体技术的应用为《模拟电子技术》课程教学手段的改革开拓了一个新的领域 ,科学有效地使用多媒体是教学手段改革的关键。     

我国企业自主技术创新体系解析

技术创新是我国企业提高核心竞争优势的有效方式,而自主技术创新是技术创新的一种主要形式。我国企业的自主技术创新体系可分为四个要素:创新环境设计、自主研发创新、自主管理创新和自主市场创新。创新体系的设计可以为我国企业自主创新的实践提供有效的理论支持,而因子分析可以为创新体系提供现实性的检验:科学的创新环境设计可以有效促进其余三要素的发展和提高,而提高信息交流效率可以有效地提高自主管理创新的效率。     

舞蹈与文学的"通"与"异"

舞蹈与文学有许多相通之处,如创作目的、表现手法、艺术形象等,都是人们自我表达的媒体;而不同之处在于艺术表现形式上,舞蹈是肢体语言,文学是文字语言.如果将两者有机地联系起来,并加以相互应用,将对舞蹈艺术教育起到良好的促进作用.     

一种考虑风险的项目活动持续时间的估算方法

在介绍PERT网络模型基础上 ,从影响项目工期的风险因素出发 ,分析风险因素对项目活动的影响 ,提出了一种新的项目活动持续时间的估算方法 ,通过多次模拟确定项目持续时间分布和期望工期 ,并可找出影响项目工期最大的因素。     

电脑美术在美术教学中的定位、作用及应用

本文通过对电脑绘画语言的特点进行阐述与分析,同时与传统绘画语言进行了比较,对电脑美术课程在美术教学中应处的地位进行了论述,对优化美术教学手段和美术人才培养作了研究