POPULATION EXPANSION IN CHINA''''S METROPOLISES AND ITS SCALE-CONTROL

Metropolises are centers of politics, economy, culture and information, and also economic growth poles in comparatively large areas. After 1949, China's urban structure have changed greatly, from original "pyramid" shape into "upside -down pyramid" shape, that is, more megalopolises and metropolises, fewer medium-sized and small cities. The most distinguishing feature of urban population growth was the remarkable increase of population in megalopolises and metropolises. The key reason for urban population expansion is to want to obtain the benefits of scale -agglomeration economy of metropolises. The number of urban functions directly determines the quality and quantity of urban population. Metropolises appeal not only agricultural population but also the population of medium-sized and small cities, which put much more population pressure on metropolises. The ideal goals of scale-control of metropolitan population are discussed in terms of economy, society and ecollogy. In order to control the metropoli     

临朐山旺泉天然苏打水形成机理简析

临朐山旺泉苏打水赋存于临朐群牛山组蜂窝状玄武岩中,水质优良,开发前景广阔,该文利用高压反应釜模拟实际地层条件下水岩平衡反应,同时辅以同位素分析,矿物X-射线衍射分析等手段,结合当地特殊的水文地质背景,系统性地阐明了苏打水形成机理。     

GNSS-R/IR监测地表冻融状态对延迟多普勒波形和多路径数据影响分析

将GNSS-R/IR技术的应用领域拓展到地表冻融状态的监测中,本文利用冻融土混合介质介电常数模型计算土壤介电常数,采用双站全极化相干反射率模型和随机粗糙面散射模型,分别计算了经冻融土反射的GPS相干反射量的镜像反射率,以及GPS非相干反射分量的漫散射特性。模拟分析了冻融转换时,GPS多路径信息(GNSS-IR)以及包含漫散射信号的延迟多普勒图(GNSS-R)的变化特征。理论研究表明冻融转换过程中,地表介电常数的变化导致GPS多路径信息和延迟多普勒图的明显变化。本文从散射机理上揭示了利用GNSS-R和GNSS-IR遥感进行地表冻融特性监测的理论依据。     

基于OpenCV和ArcGIS Engine的墙体中线自动提取在不动产测绘中的应用

在不动产测绘业务中,无论是房产预测绘还是实测绘,内业过程中都需要基于建筑单体的CAD电子图纸来获取墙体中线.传统的做法是利用AutoCAD软件的标注功能来逐边画取,这种做法的优点是画取的边线精度较高,但效率低下,占据了房产测绘内业的大部分工作量.为提高房产测绘内业的作业效率,本文采用二值化、骨骼化等算法,基于OpenCV和ArcGIS Engine技术,实现了CAD墙体中线的自动提取,对不动产测绘内业的作业流程进行了优化.实验结果表明,本文采用的方法在不动产测绘内业生产中具有一定的实用价值.     

基于OpenGL的GNSS仿真软件中的飞行模拟可视化研究

探讨利用OpenGL实现GNSS仿真软件中的飞行模拟可视化方法,给出根据仿真输出的俯仰角、偏航角和速度信息实现的三维可视化结果。     

山东省天然苏打水的首次发现及其地质特征

临朐山旺泉天然苏打水产地位于临朐县营子镇牛山—方山一带,地下水中酸碱度和小苏打含量达到了国际苏打水定名标准,在山东省境内尚属首次发现。该苏打水赋存于临朐群气孔状牛山组玄武岩岩石中,水文地质条件清楚,水位、水质、水量动态稳定,无污染,感观无色无味、清澈透明,甘冽爽口。     

Population expansion in China’s metropolises and its scale-control

Metropolises are centers of politics, economy, culture and information, and also economic growth poles in comparatively large areas. After 1949, China’s urban structure have changed greatly, from original "pyramid" shape into "upside-down pyramid" shape, that is, more megalopolises and metropolises, fewer medium-sized and small cities. The most distinguishing feature of urban population growth was the remarkable increase of population in megalopolises and metropolises. The key reason for urban population expansion is to want to obtain the benefits of scale-agglomeration economy of metropolises. The number of urban functions directly determines the quality and quantity of urban population. Metropolises appeal not only agricultural population but also the population of medium-sized and small cities, which put much more population pressure on metropolises. The ideal goals of scale-control of metropolitan population are discussed in terms of economy, society and ecollogy. In order to control the metropolitan population expansion, the following measures should be taken: developing medium-sized and small cities, and satillite cities establishing rationally regional urban system, reasonably distributing industrial enterprises, and greatly developing township enterprises.     

PRELIMINARY EXPLORATION OF DEVELOPMENT STRATEGY OF PUDONG IN SHANGHAI

The article, in a comprehensive view, explores the strategic vantages, strategic urgency, strategic goals, strategic planning as well as strategic steps.     

Factors affecting formation and development of the urban industrial district in China — A case study on caohejing hi-tech park in Shanghai

In China, the urban industrial district is usually an organic concentrated district including many factories that are in big, middle or small size, and are coordinated in the process of production, or use infrastructure in common. The formation and development of the urban industrial district in China are affected by not only general factors such as natural factor, transportation factor, labour factor, ecologic factor, but also special factors such as agglomeration factor, technologic factor and social factor. To the district’s formation, both the social factors and natural factors are important, especially the attitude the government have towards the district and the regional natural condition. But the agglomeration, market and transportation costs here are not as important as those in the traditional Industrial Location Theory. Now we must pay great attention to these three factors owing to the new economic conditions in China. In the development of the district, the main factors are technology and agglomeration. This indicates that the technologic factor is gradually the essential condition in the development of the district. Besides, we must also know the affection of the ecologic factor in the development of the district. According to the reality of Caohejing district, this paper gives every factor mark in the Analytic Hierarchy Process (AHP). With the result of the AHP, some suggestions have been put forward to Caohejing Hi-Tech Park and other urban industrial districts as well.