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census
相关语句
  人口普查
    Design and implementation of census spatio-temporal database based on data models of base state with amendments
    基于基态修正模型的人口普查时空数据库的设计和实现
短句来源
    Component GIS for Census in Pudong New Area
    浦东新区人口普查地理信息系统的设计与实现
短句来源
    This research has performed the space distribution pattern of the density of population of Fujian and achieved accuracy, science and practical population data. Based on the 5th national population census data of 2000, this paper analyses the relationship between population density and the influencing factors in Fujian, including topographical index (calculated by territorial elevation and relief), land use, road network density , network density of waterways , the distance of the coastline, and residential areas .
    文章以2000年第5次全国人口普查数据为基础,分析了福建各市县平均人口密度与地形指数(由海拔高度和地形起伏度综合计算而得)、上地利用、道路网密度、河网密度、与海岸线的距离以及与居民点密度之间的相关性。
短句来源
  “census”译为未确定词的双语例句
    Uncertainties of Data in Urban Census GIS
    城市人口GIS中数据的不确定性研究
短句来源
    On the Spatial Analysis of Social-Economic Census Data in GIS
    基于GIS的宁波区域经济数据空间分析
短句来源
    Some Issues on Urban Census GIS Designing
    城市人口地理信息系统建设模式探讨
短句来源
    Census geographical information system (CGIS) is a spatial information system on the basis of GIS technology. It can be used to analyze and evaluate the current characteristics, trend and spatial relevance of regional population, resources and environment.
    人口地理信息系统是在地理信息系统技术支持下,能对区域人口、资源、环境的现状特点、发展变化及其空间组合关系等进行全面分析和综合评价的空间信息系统。
短句来源
    On the basis of drawing lessons from formers studying and combining the latest theory of the data fusion in the world, this text launches the research of specialization of population census data in Fujian.
    本文在借鉴前人研究的基础上,结合国际上最新的数据融合理论,开展福建人口数据空间化。
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  census
The dynamics of tree layer biomass was studied by combining 35 sample plots of field census with biomass model estimation in a natural Quercus aliena var.
      
Annual censuses in different sites proved more expedient than a long-term census in a single key site to study medium-and small-scale spatial heterogeneity of bird communities.
      
The annual variation in census size and overlapping of year classes reduced the ratio of the effective subpopulation size to the census size by 7 to 88% in different subpopulations.
      
The total effect of the variance of reproductive success in individual years and the variance of reproductive success of different cohorts reduced the effective size/census size ratio by 68-96%.
      
The necessary amount of sampling for census and assessing the taxonomic diversity of large soil invertebrates in different geogr
      
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Census data is not only useful for the whole country,but also valuable to the local levels [FK(W25。40ZQ]and even to the private sectors.If we use some advanced information technologies in the 5th National Census,we will make the Census information more valuable and useful.Now,GIS technology is commended to deal with demographic problems in China.We are very familiar with GIS technology,but we did little in Census area.We should do some application research on Census GIS immediately....

Census data is not only useful for the whole country,but also valuable to the local levels [FK(W25。40ZQ]and even to the private sectors.If we use some advanced information technologies in the 5th National Census,we will make the Census information more valuable and useful.Now,GIS technology is commended to deal with demographic problems in China.We are very familiar with GIS technology,but we did little in Census area.We should do some application research on Census GIS immediately. Firstly,this paper introduces the application background of Census GIS around the world.Now,there are many successful systems in developed countries,such as TIGER in USA,HMSO in England,etc.All these systems are very helpful for us to develop our own Census GIS.In recent years,information technology has been widely used in China,and many cities have prepared abundant digital information,such as digital maps,Orthophotos,data on industry,etc.There are good conditions to develop Census GIS in many cities,especially in metropolises in our country. Secondly,a three_layer structure for Census GIS designing is proposed,which are the data layer,the management layer,and the application layer.As a typical example,Guangzhou city is picked up in this paper.①The data layer in Guangzhou Census GIS includes some typical integrated urban data (about Census,industry,terrain,etc.).②Census database and data warehouse based on integrated data are comprised in the management layer.③Four application systems (for integrated application,for demographic task,for decision support,and for information distribution based on Internet) are included in the third layer. Finally,three issues on Census GIS implementing are discussed in brief.①Be sure to find an efficient way to manage the integrated data,be sure to choose a uniform geographic coordinate system and an effective geocoding method.②To build a data warehouse based on integrated urban data,then develop a decision support system (DSS) based on the data warehouse.③To use some useful analysis tools such as on_line analysis process (OLAP),data mining (DM),and spatial analysis,etc.

分析了国内外人口地理信息系统的发展概况 ,简要总结了目前我国建立城市人口地理信息系统的技术、数据基础和社会背景 ,初步提出一种建设城市人口地理信息系统的三层结构模式。以广州市的具体情况为例 ,探讨了人口地理信息系统建设过程中数据选择、数据库设计、人口数据仓库的建立、城市综合数据分析方法等关键问题。

In recent years,many researches are focused on the uncertainties of GIS data.It can be found that most of these researches are focused on the uncertainties of spatial data while a few are on the attribute data.In this paper,the authors try to integrate the uncertainties of spatial data and attribute data to analyze some problems on the data uncertainties in Census GIS.This paper suggests considering the uncertainties of spatial data and attribute data at the same time in GIS analysis and application.On...

In recent years,many researches are focused on the uncertainties of GIS data.It can be found that most of these researches are focused on the uncertainties of spatial data while a few are on the attribute data.In this paper,the authors try to integrate the uncertainties of spatial data and attribute data to analyze some problems on the data uncertainties in Census GIS.This paper suggests considering the uncertainties of spatial data and attribute data at the same time in GIS analysis and application.On the basis of the characters of Census GIS,the authors concludes three kinds of data uncertainties in Census GIS.Then,some related contents,reasons,and the influence of these uncertainties are discussed in detail.On the basis of the data uncertainties discussed in this paper,the authors propose some methods to resolve the related problems.Accordingly,some concise formulae are used to illustrate the uncertainties and the related models.

针对系统数据源、数据模型的不确定性以及分析过程中引入的不确定性等问题进行了系统的研究 ,并归纳了各种不确定性的影响模型 ,进而提出了一套人口GIS数据优化建模以及分析过程中人口密度中心建模的思想和实用方法 ,用于克服人口GIS中数据的不确定性的影响。

The management of city underground pipe-line is a very difficult problem for many years, recently with the developmentof geographic information system technology, which makes computer management of underground pipe-line possible. This paper expounds important links in detail such as the work flow of pipe-line census, data standard and automatic supervising inputting database and automatic mapping of pipe-line censusdata and so on.

城市地下管线的管理多年来一直是一个十分困难的问题 ,近年来随着地理信息系统技术的发展 ,使得地下管线的计算机化管理成为可能。本文对管线普查作业流程、数据标准、管线普查数据的自动化监理入库和自动化出图等重要环节作了深入的阐述。

 
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