美国2000年和2010年人口普查质量评估方法解读

人口普查后独立组织一次调查估计其覆盖误差率。美国从1980年开始在人口普查的事后质量检查中使用双系统估计量来估计人口总体真实人口数,并依据它来估计普查的覆盖误差率。后来,这种估计量在世界上其他一些国家人口普查的事后质量检查中也先后被采用。本文以美国2000年人口普查的事后质量检查方案ACE和2010年将要实施的新方案CCM为基础,解读构造双系统估计量的若干理论与实践问题。     

一起学生补碘后群体癔病暴发流行的调查分析

对一起学生补碘后群体癔病暴发流行进行了调查分析。结果显示，在服用碘片的1600名学生中，480名有不适反应，要求就诊，占服药人数的30％。讨论了诱发的因素，提出了防治对策。     

东北地区普通高等学校医药类专业物理实验课教学现状调查

通过问卷方式,调查了东北地区8所普通高等学校医药专业(本科)物理实验课教学情况。     

系统抽样时方差估计量的比较──一种新的比较准则

本文提出了一种新的比较抽样调查中方差估计量好坏的准则，并利用它对K．M、Wolter所著书[1]中的若干系统抽样的方差估计量进行了比较与改进．     

宁波大学女教职工妇科普查分析

通过对宁波大学女教职工的妇科普查，发现患病率较高的3种疾病分别为慢性宫颈炎、阴道炎和子宫肌瘤．为保证女教职工的身心健康，应定期进行妇女常见病、多发病的普查普治．同时，也为不同年龄阶段女教职工妇科疾患的预防提供依据．     

1 pF的数显电容计

用CMOS门电路、1 0 0kHz石英晶体、单稳态电路及计数 /译码器 ,制作了测量精度可达 1 pF的数显电容计     

Monte Carlo methods in applied mathematics and computational aerodynamics

A survey of the Monte Carlo methods developed in the computational aerodynamics of rarefied gases is given, and application of these methods in unconventional fields is described. A short history of these methods is presented, and their advantages and drawbacks are discussed. A relationship of the direct statistical simulation of aerodynamical processes with the solution of kinetic equations is established; it is shown that the modern stage of the development of computational methods is impossible without the use of the complex approach to the development of algorithms with regard for all the specific features of the problem to be solved (its physical nature, mathematical model, the theory of computational mathematics, and stochastic processes). Possible directions of the development of the statistical simulation methods are discussed.     

Radon levels in the volcanic region of La Garrotxa, Spain

A preliminary survey in the city of Olot, the main town of the volcanic region of La Garrotxa, showed that dwellings built on volcanic formations present higher indoor radon levels than dwellings on non-volcanic materials. The soil of the area is not especially rich in radium. However, some of the volcanic materials present very high permeability and therefore radon entering the houses might have travelled over long distances. In this paper we present indoor radon values measured in a larger survey carried out during April–July 2004. The influence of the volcanic materials found in the preliminary survey has been confirmed. The results obtained suggest the possibility that radon comes from the degassification of mantle through active faults. The values obtained in working places do not constitute a relevant radiological risk for workers.     

BERGMAN TYPE PROJECTIONS ON L^p SPACES

The paper is a survey on the action of Bergman type projections on various Lp on three types of holomorphic function spaces： weighted Bergman spaces, the Bloch spaces. The focus is space, and diagonal Besov spaces.     

惯性测量系统零速修正的几种估计方法

—零速修正（ＺＵＰＴ）在惯性测量系统中占据着至关重要的地位，它是进行误差控制的一种廉价而有效的手段。进行零速修正的方法主要有实时卡尔曼滤波和曲线拟合法。本文对国内外常用的几种估计方法和原理进行了分析和比较，并在卡尔曼滤波和状态方程解曲线拟合的基础上提出一种新的估计方法—平滑估计法。它将给出更好的零速修正结果。最后，我们利用改装的，И—２１惯导系统在北京郊区一条测线上跑车的实测数据，给出了实际处理结果，并对各种方法进行了评估。