SHORT COMMUNICATION CLASSIFICATION METHODS FOR MULTIVARIATE QUALITY PARAMETERS

There are many chemical products where product conformity is decided upon by qualitative humanjudgements of overall product quality.Nowadays,quantitative instrumentally determined qualityparameters become available which are intended to replace such qualitative judgements by means ofautomatic decision rules using multivariate specification limits.Six classification methods to derive suchlimits are compared in terms of their power to predict corresponding human judgements on overall colorconformity of 17 dyestuffs based on historical quality data.Standard statistical classification methodsturned out to be unacceptable for the routine generation of decision rules because of the frequent distinctsuboptimality of their predictive power.Instead,a simple non-statistical classification method utilizinga priori knowledge about the underlying data structure yielded uniformly satisfactory decision rules.     

Climatic Trend of Cloud Amount Related to the Aerosol Characteristics in Beijing During 1950-2005

This paper analyzes the correlation between variations of total and low cloud amounts and the varying features of aerosols related to urban development of Beijing by using the cubic spline fitting method based on the monthly meteorological data of temperature,humidity,precipitation,clouds,and aerosol optical depth (AOD) during 1950-2005.The statistics on the development of the city of Beijing in this period,including the total industrial output,population,residential housing development,highway construct...     

海洋重力资料整理技术与软件实现

针对海洋重力测量成果规范化整理与重力异常计算软件开发问题,重点讨论了重力掉格校正与测线文件获取的可视化方法;引入贝塞尔方法计算船速和航向,并进行厄特渥斯校正.在此基础上,依据海洋重力调查规范,基于图形可视化技术开发了一套具有人机交互功能的海洋重力资料整理软件.     

东海陆架盆地丽水凹陷丽水36-1构造上古新统物源分析

丽水36-1构造位于东海陆架盆地(台北坳陷)丽水西次凹的中东部，该凹陷属新生代断陷型盆地，呈北东向展布，上古新统灵峰组和明月峰组是主要目的层段。根据该构造已钻3口井进行系统沉积学和测井相研究，上古新统物源主要来自凹陷西部的闽浙隆起带和中部的灵峰凸起带，可能还有北部的雁荡凸起带。不同的物源区通过断层的活动和海平面的升降等控制着沉积体系的发育和展布。在凹陷下陷兴盛和海平面快速上升期，灵峰凸起带物源经过边缘大断层在其西侧形成扇三角洲，进一步向凹陷中心推进形成深水浊积扇和浅海沉积；闽浙隆起带物源可能沿着不同的入口在凹陷西斜坡形成扇三角洲，它们也可进一步向凹陷深处推进形成深水浊积扇体。根据油气聚集规律和物源分析，形成于凹陷深水区的浊积扇沉积和斜坡带的扇三角洲前缘沉积，具有良好的生储盖组合，是有利的勘探目标。     

REVIEW ARTICLE MULTIVARIATE EXPLORATORY DATA ANALYSIS AND GRAPHICS:A TUTORIAL

Exploratory data analysis(EDA)is a toolbox of data manipulation methods for looking at data to seewhat they seem to say,i.e.one tries to let the data speak for themselves.In this way there is hope thatthe data will lead to indications about'models'of relationships not expected a priori.In this respect EDAis a pre-step to confirmatory data analysis which delivers measures of how adequate a model is.In thistutorial the focus is on multivariate exploratory data analysis for quantitative data using linear methodsfor dimension reduction and prediction.Purely graphical multivariate tools such as 3D rotation andscatterplot matrices are discussed after having introduced the univariate and bivariate tools on which theyare based.The main tasks of multivariate exploratory data analysis are identified as'search for structure'by dimension reduction and'model selection'by comparing predictive power.Resampling is used tosupport validity,and variables selection to improve interpretability.     

Soluble species in aerosols collected on the route of the Second Chinese National Arctic Research Expedition

Aerosol samples are collected on the route of the Second Chinese NationalArctic Research Expedition from July 15 to September 28,2003.The concentration ofwater soluble ions(Na~+,NH_4~+,Ca~(2+),Cl~-,MSA,SO_4~(2-)and so on)are ana-lyzed.By correlation analysis,the ions can be divided into three groups:(1)Na~+,Mg~(2+),K~+,Ca~(2+),Cl~-,SO_4~(2-),mainly from sea salt;(2)NH_4~+,NO_3~-,markedlyfrom coastal regions of the continents;(3)Acetate,MSA,C_2O_4~(2-),from othersources.Marine aerosols are the dominant origin,Cl~- and Na~+ are the most domi-nant anion and cation,respectively and these two ions(Na~++Cl~-)account for 55.6% of the total aerosol loading.The mean equivalence ratio of NH_4~+/SO_4~(2-)is 0.45,we suggest that ammonium and sulfate exist mainly as NH_4HSO_4.The concentrationof NO_3~- shows three different patterns on the route of expedition:Japan Sea with me-dian value of 15.2 neq·m~(-3);Sea of Okhostk and Bering Sea of 1.8 neq·m~(-3)andArctic Ocean of 0.4 neq·m~(-3).Bering Sea is a high MSA area.Through the com-parison of the concentration of main water soluble ions between the First and SecondChinese National Arctic Research Expedition,the variation matches each other.     

大气CO2标准气浓度标定及采样瓶CO2浓度分析系统

对美国NOAA／CMDL开发的用于我国大气本底监测的非色散红外CO2瓶分析和标准气标定系统做了测试与讨论,并对在青海瓦里关、浙江临安、黑龙江龙凤山和北京上甸子所采集到的实验性空气样品中的CO2浓度进行了测量,与瓦里关在线连续测量结果进行了对比,结果均表明该系统具有较高的灵敏度、精确度和较好的稳定性,具备了从进样到数据处理等较为完整的自动化功能,具有简便易行、准确可靠等特点,可用于大气CO2标准气体的标定及采样瓶分析。测量和对比结果也表明,样瓶采样和分析系统可在一定程度上替代现场连续测量系统,在不同的地点进行采样并进行集中分析也是一种较为经济、实用的方法。     

江汉盆地潜江凹陷古近系潜江组含盐岩系沉积特征与沉积环境

潜江组盐层间的层段（盐间段）由砂岩和非砂岩两部分组成。其中非砂岩分布广泛，主要由单层厚度为毫米-厘米级累积厚度达几十厘米至几米的含盐韵律组成，并多为复成分的蒸发盐矿物、碳酸盐矿物及陆源的粘土和细碎屑矿物组成的混积岩。过去，人们对盐间段非砂岩的研究主要基于对岩性的认识，对于其沉积特征和沉积环境方面的研究较薄弱。本文通过对潜江凹陷西北部王场构造3口井共约151米岩芯的精细研究，对盐间段沉积特征和沉积环境进行了系统分析。认为潜江组盐间段湖盆环境为常年性较深水分层盐湖，大体可分为微咸水湖、半咸水湖、咸水湖和盐湖，水体深度自下而上逐渐变浅。     

CE-318型太阳光度计常见问题及其解决方法

介绍了CE-318型太阳光度计在运行过程中容易出现的问题,分析和说明了出现问题的原因,并给出了解决办法,提出了对仪器进行日、周、月、年检查、维护注意事项。旨在为台站观测技术人员提高CE-318型观测仪器的使用、维护和检修能力,进行仪器的常规检查和维护提供参考,也为提高仪器运行的稳定性和数据质量的可靠性提供基础保障。