Have analysed the quality problem and reason of calis online catalogue database , and proposes strengthening some suggestions of bibliographic data quality control 摘要分析了calis联合目录数据库的质量问题及其原因,并提出了加强书目数据质量控制的一些建议。
Data quality control including sidelobe contamination , data ' s filling and smoothing , nyquist velocity of bistatic doppler radar , interpolation of velocities from a polar grid to a cartesian grid and problems found during simulating data and solusion to them 介绍了数据质量控制,包括旁瓣污染、资料的填补与平滑、双基地最大不模糊速度、从极坐标到直角坐标的转换以及在模拟风场过程中发现的问题和解决办法。
In this paper , the theories and techniques of data quality control are thoroughly studied by taking pudong construction and management geographic information system ( js - gis ) , including error analysis and accuracy evaluation of digitized data , sample tests of housing surveying product , the principle and method of disfigurement measurement of attribute data based on sampling theories , and total quality control techniques of gis data . these methods are implemented in the construction of js - gis . the main contents are as follow : 1 本论文以浦东建设管理地理信息系统( js _ gis )为例对gis数据质量控制的一些具体内容进行了研究,包括数字化数据误差分析以及精度评定、房产测量成果的抽样检验、属性数据缺陷率度量的抽样原理和方法、 gis数据的全面质量控制方法,并将这些方法应用于js _ gis中,主要内容有: 1 、介绍js _ gis的系统组成,对js _ gis中数据的主要构成以及数据采集进行分析。
In this text , according to south china sea ( scs ) hydrology investigation data , including the nansen data , bt and ctd data , thermocline distribution of scs and its characteristics have been studied . at same time , with the data of sun " s thermal radiation , air temperature , and other weather data the ocean thermocline has been calculated . the research involves the following aspects : large - scale data processing method ; data quality control ; thermocline identification and statistics method ; thermocline map ; thermocline influence factors of scs ; thermocline results comparison using nansen data and bt data ; thermocline forecast 研究涉及到以下几个方面:大规模资料的处理方法、质量控制;温跃层的计算机识别、温跃层的统计分类方法;南海温跃层三项示性特征图的绘制;南海温度跃层的影响因素、南海温度跃层的分布状况;南森资料与bt资料计算南海温跃层的结果比较;海洋上层温度结构模式及计算等。