Measuring non-linear dependence for two random variables distributed along a curve

We propose new dependence measures for two real random variables not necessarily linearly related. Covariance and linear correlation are expressed in terms of principal components and are generalized for variables distributed along a curve. Properties of these measures are discussed. The new measures are estimated using principal curves and are computed for simulated and real data sets. Finally, we present several statistical applications for the new dependence measures.     

新中国成立初期干部理论教育制度化建设及经验探析

中国共产党重视干部理论教育,也注重干部理论教育的制度化建设。1949—1956年中国共产党既继承过去干部理论教育制度化建设的做法,又根据新形势、新情况进一步加强干部理论教育建设,完善干部理论教育制度。不断规范干部理论教育的组织体系、教育内容、教育方式、师资培养和考核等,使干部理论教育制度建设不断科学化、规范化,干部的素质和能力得到了较大的提高,为新生政权的巩固和发展起到了重要的作用。这一时期的干部理论教育制度化建设也形成了诸多基本经验,对新时代干部理论教育制度化建设有重要的启示作用。     

A Tiered Framework for Risk‐Relevant Characterization and Ranking of Chemical Exposures: Applications to the National Children's Study (NCS)

A challenge for large‐scale environmental health investigations such as the National Children's Study (NCS), is characterizing exposures to multiple, co‐occurring chemical agents with varying spatiotemporal concentrations and consequences modulated by biochemical, physiological, behavioral, socioeconomic, and environmental factors. Such investigations can benefit from systematic retrieval, analysis, and integration of diverse extant information on both contaminant patterns and exposure‐relevant factors. This requires development, evaluation, and deployment of informatics methods that support flexible access and analysis of multiattribute data across multiple spatiotemporal scales. A new “Tiered Exposure Ranking” (TiER) framework, developed to support various aspects of risk‐relevant exposure characterization, is described here, with examples demonstrating its application to the NCS. TiER utilizes advances in informatics computational methods, extant database content and availability, and integrative environmental/exposure/biological modeling to support both “discovery‐driven” and “hypothesis‐driven” analyses. “Tier 1” applications focus on “exposomic” pattern recognition for extracting information from multidimensional data sets, whereas second and higher tier applications utilize mechanistic models to develop risk‐relevant exposure metrics for populations and individuals. In this article, “tier 1” applications of TiER explore identification of potentially causative associations among risk factors, for prioritizing further studies, by considering publicly available demographic/socioeconomic, behavioral, and environmental data in relation to two health endpoints (preterm birth and low birth weight). A “tier 2” application develops estimates of pollutant mixture inhalation exposure indices for NCS counties, formulated to support risk characterization for these endpoints. Applications of TiER demonstrate the feasibility of developing risk‐relevant exposure characterizations for pollutants using extant environmental and demographic/socioeconomic data.     

专科英语应用能力测试中增加口试的必要性

本文从语言学、教育学、心理学、英语教学法及英语教学实践等的角度 ,多方阐述了专科英语教学中口语训练的重要性 ,并论证了专科英语应用能力测试中增加口试的必要性     

浅析高中数学有效教学的内涵、特征及实施策略

高中数学有效教学的涵义即在数学课程标准基本理念的指导下，促进学生数学学习、提高学生数学素养、促成学生终身发展．高中数学有效教学的主要特征是教学目标有效、教学过程有效、教学方式有效、教学结果有效。主要实施策略是，以引导探究为依托，实现有效的知识建构；以暴露思维作平台，实现有效的思维训练；以激发兴趣作前提，实现有效的情意驱动．     

论西夏的司法制度

西夏的行政、军事机关,一般都兼有案件审判和督察复核职责。司法诉讼主要为刑事诉讼,即使民事案件,也是用刑事判断。对人犯的逮捕只需长官的指令,而不履行法律手续。法律上只有对逮捕人的督察,防其奸伪、贪纵、暴掠以及无故杀伤人犯,人犯拒捕反抗格杀勿论。     

秦、西汉的“内臣”与“外臣”

本文对文献记载中西汉政权处理民族关系时出现的“内臣”和“外臣”作了分析 ,归纳了它们在与中央政权关系上各自不同的特点。作者在分析云梦睡虎地秦简的基础上认为 ,秦简中的“臣邦”相当于汉代“内臣” ,“外臣邦”相当于汉代“外臣” ;并指出文献中的“羁縻”制度等同于“外臣” ,“葆塞蛮夷”相当于“内臣” ;同时提出“内诸侯”和“外诸侯”的称呼不适合于汉代分封和民族政策 ,应以汉代习称的“内臣”和“外臣”为准。最后 ,本文归纳了“外臣”向“内臣”转化的途径和原因 ,提出中央政权军事力量的壮大是完成此转化的直接动力。     

民族地区干部如何看待民族地区加快发展问题--云南地方干部问卷调查分析报告

新世纪中国民族地区面临的最大机遇是社会发展指标追赶的机遇,面临的最大挑战是人类贫困,从而使民族地区传统发展战略和宏观管理政策将面临着严峻的挑战。因此,本文依据具有民族地区代表性的云南地方干部调查问卷统计分析结果,通过考察民族地区发展战略的制定者和宏观管理政策的执行者——民族地区干部——对民族地区加快发展问题的认识和理解,总结出了一些有益的政策启示。     

西部开发与民族文物干部的培养

在西部开发过程中 ,要保护民族文物 ,离不开民族文物干部。举办民族文物培训班 ,是培养民族文物干部的捷径。