首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 31 毫秒
1.
城市人口地图是以城市为基本制图单元的人口地图。编制城市人口地图应遵循以下指导思想:城市是国家经济力量的主体.是独特的经济地域;城市是国家高知识密集地区和精神文明的重要载体;城市对提高人口文化素质具有重要战略意义。城市人口地图的编制原则为以下几方面:科学性、实用性与艺术性相结合;提高地图容量,增加载负量,突出差别;疏密适中,取舍有度;图面的配置合理,色彩协调;精益求精、一丝不苟。城市人口地图编制中应建立科学的指标体系。  相似文献   

2.
In 1975 Congress required that budgetary requests for selected defense programs be accompanied by a statement assessing their arms control effects. Implementation of this requirement has fallen far short of unqualified success, and several proposals for remedying its failures are now being discussed. If remedies are based on incomplete or faulty diagnoses of the requirement's failures, however, they could exacerbate its dysfunctional aspects. This article suggests that the requirement has been unsuccessful because of an inadequate appreciation both of the political dynamics of the bureaucratic process involved and of the objective problems of these arms control issues. The analysis presented here concentrates on the former and suggests that further legislative modifications to the requirement are unlikely to be fruitful.  相似文献   

3.
A simple variational formulation for contact dynamics is adopted to investigate the dynamic behavior of planar masonry block structures subjected to seismic events. The numerical model is a two-dimensional assemblage of rigid blocks interacting at potential contact points located at the vertices of the interfaces. A no-tension and associative frictional behavior with infinite compressive strength is considered for joints. The dynamic contact problem is formulated as a quadratic programming problem (QP) and an iterative procedure is implemented for time integration. Applications to analytical and numerical case studies are presented for validation. Comparisons with the experimental results of a masonry wall under free rocking motion and of a small scale panel with opening subjected to in-plane loads are also carried out to evaluate the accuracy and the computational efficiency of the formulation adopted.  相似文献   

4.
The concept of region-based planning and management bodies, which flourished for a time during Khrushchev's sovnarkhozy reforms, is resurrected, this time under the guise of promoting decentralization and enhancing territorial versus sectoral planning under perestroyka. More precisely, the authors argue for devolution of meaningful planning and management functions to a network of smaller and more numerous economic regions, with “regional economic councils” serving as bodies for planning and coordinating the activities of smaller spatial units within these regions. A scheme describing how such a network might function within the current Soviet bureaucratic structure and economic environment is presented (translated by Jay K. Mitchell, PlanEcon, Inc., Washington, DC 20005).  相似文献   

5.
西安市相对资源承载力与可持续发展研究   总被引:10,自引:0,他引:10  
以全国和陕西省为参照区域,分别计算了1978、1980、1985年和1990-2002年间各年西安市自然资源、经济资源的相对承载力和综合承载力,同时分析了它们的动态变化过程。指出西安市由于人口增长、经济发展与资源利用的不协调,导致其综合承载力长期处于超载状态,而且近年来由于水、土资源的大规模开发利用,使超载状态愈趋加重。因此,西安市的可持续发展应采取合理控制自然资源开发规模、大力发展经济、控制人口增长等措施,不断协调人口、资源、环境和发展的矛盾,逐步走向可持续发展。  相似文献   

6.
江苏省城镇化发展协调度评价与地区差异分析   总被引:6,自引:0,他引:6  
将城镇化分解成人口城镇化、经济城镇化、土地城镇化和社会城镇化4部分,且认为这4部分应处在协调耦合状态,用TOPSIS法对江苏省城镇化发展协调度进行评价,之后对评价结果的地区差异进行分析,以对城镇发展政策制定提供依据。研究表明:常州和扬州在优质协调区;南京、镇江、苏州和无锡在良好协调区,且土地城镇化相对滞后,说明城镇土地高效集约利用;徐州、淮安和南通在基本协调区,徐州与淮安土地城镇化过快,社会城镇化滞后,表明城镇土地粗放低效利用,同时忽视公共服务产品供给,南通土地城镇化滞后,表明城镇扩张缓慢,城镇化的土地代价水平较低;泰州和盐城在轻度失调区,盐城经济城镇化滞后,泰州土地城镇化滞后,土地集约利用强度大,城镇发展选择的是一种精明增长路径;连云港和宿迁在中度失调区,土地城镇化明显快于其它城镇化,城镇发展土地代价水平高,具有相当过渡性损失。  相似文献   

7.
Azfar Moin's recent work on millennial sovereignty in Mughal India prompts a consideration of the evolution of sovereignty in modern South Asia more broadly. Although the sovereign principles of the Mughals differed from those of the British Indian empire, which ultimately succeeded it, these empires shared important similarities in their linking of sovereign authority to visions of a cosmos in immanent interaction with human affairs. This article explores these similarities and differences and speculatively considers their implications for both similarities and differences in Mughal and British principles of statecraft. These similarities and differences provide an important backdrop for thinking about the meanings attached to popular sovereignty in modern India as well.  相似文献   

8.
城市居民职住空间关系是指城市居民居住地和工作地之间的社会空间关系,是城市空间结构的重要研究内容。体制转型时期中国城市居民职住空间关系正在经历着翻天覆地的变化。本文主要从职住空间关系研究学派、职住空间平衡和城市通勤、居住选择和居住空间分异等方面对国内外相关研究进行述评,认为国内相关研究应注重社会调查,加强个体层面的研究,从体制转型和个体社会经济特征等角度寻求城市居民职住空间关系及其演化的形成机制,并注重特殊群体,如外来人口、城市贫困人口和原单位制社区居民等社会群体的职住空间关系和社会空间后果研究。  相似文献   

9.
The value of output, employment, and capital stock for each industrial sector for each oblast-level spatial unit in the former USSR, as well as differences in regional industrial structures are presented on the basis of a unique set of unpublished Goskomstat data. Particular emphasis is placed on asessing the regions' relative raw materials endowments, especially with respect to energy resources, and on the degree of diversification, or lack of same, within their industrial structures. The extremely uneven distribution of industrial capacity is examined in light of its role in determining the near- and longer-term economic prospects for the various republics and regions.  相似文献   

10.
中国互联网与区域经济   总被引:6,自引:0,他引:6  
文章运用指数定律分析了中国互联网的域名地区分布、地区人均国内生产总值分布和地区人口分布,得出的结论是:中国互联网分布是地区人均国内生产总值的反映,与地区人口分布联系不大。这证实了互联网与区域经济的紧密相关性。研究中还发现,中国互联网仍然处于高速增长期;最后给出了中国互联网增长的速度,以及到达成熟稳定时期所需的时间。  相似文献   

11.
中国当代人口城市化、空间城市化与社会风险   总被引:1,自引:0,他引:1  
李婕  胡滨 《人文地理》2012,27(5):6-12
趋势和比较分析我国人口城市化和空间城市化,表明我国人口城市化的速度和规模远滞后于空间城市化。其实质为社会、文化、制度的构建与经济增长的不同步,究其缘由,除了政策制度的因素外,资本和权力的勾连以及"经济达尔文主义"是其"质料因"和"动力因"。这种对城市化经济性的过度追求必将带来土地金融危机、社会极化、空间区隔和"原子化社会",使生活在城市中的人缺乏尊严感和安全感,集聚社会风险。因此,城市化发展应从规模的追求转向到对质的追求,构筑一种"城市如家"和"充满选择机会"的城市化。  相似文献   

12.
俄罗斯西伯利亚人口状况及其地理分析   总被引:2,自引:0,他引:2  
李同升  黄国胜 《人文地理》2007,22(3):120-124
西伯利亚人口问题一直非常尖锐,20世纪90年代以来更有不断恶化趋势。基于1989年和2002年俄罗斯人口普查资料,对西伯利亚人口状况及其动态变化进行了分析,得出了一些重要结论:1989-2002年间西伯利亚人口减少了95.9万,减少幅度达3.7%,远高于全俄1.5%的平均减幅;出生率降低、死亡率提高和人口大量迁移导致多数城市和区域人口持续减少,劳动力短缺问题日趋严重,制约了地区经济的发展;实现人口自然增长、调节人口迁移、引进合法移民乃西伯利亚人口和经济社会发展的当务之急。  相似文献   

13.
上海市浦东新区土地利用与适度人口规模研究   总被引:5,自引:0,他引:5  
上海市浦东新区的土地利用结构与人口分布在不同地域空间差异很大。本文通过与国内外人均建设用地及用地结构的比较,分析和探讨了中长期发展中,浦东新区合理的土地利用结构和人均建设用地。本文通过不同类型区建设用地总有效供给量与人均建设用地指标值之比,求出目标期内浦东新区不同类型区的适度人口规模,提出了高、中、低三个预期方案。文章结尾部分提出了在现状基础上,实现合理土地人口承载规模的建设用地结构及布局的调整和优化方案。  相似文献   

14.
Ethical principles in professions can be related either to ends or to means. This article explores attitudes about the ethics of means among urban planners. A variety of means are classified into a hierarchy, from the most to the least ethical, and differences in responses to this hierarchy are explored. Implications for other public policy fields are also discussed.  相似文献   

15.
面向规划建设的村庄分类指标体系研究   总被引:4,自引:0,他引:4  
史秋洁  刘涛  曹广忠 《人文地理》2017,32(6):121-128
我国村庄类型多样,规划建设需要分类指导,但全国层面上综合、简便、易推广的村庄分类指标和方法仍有待探索。在目标导向、有机综合、简明可操作及适度弹性原则的指导下,从总体和结构两方面建立包括自然禀赋、区位条件、村庄规模、形态结构、人口结构、经济结构和用地结构的村庄类型基础指标体系;并基于全国7省48个行政村样本数据,采用聚类分析、KW检验和主成分分析提取8个简便易行的正交特征指标;据此识别了平原传统农业村、山区传统农林村、养殖专业村、远山特色农业村、城郊非农产业村和平原非农产业村等典型村庄类型,总结了各类型特征及规划建设重点,证实了指标和方法的科学性和适用性,为我国村庄规划建设的分类指导提供了方法论基础。  相似文献   

16.
重庆市人口与经济发展空间耦合分布研究   总被引:1,自引:0,他引:1  
本文基于2001-2012 年重庆市各个区县的人口和经济数据,计算重庆市各区县的人口地理集中度和经济地理集中度并结合耦合指数,分析人口分布与经济分布耦合特征与人口与经济空间分布类型,并运用Geoda、ArcGIS 软件对重庆各个区县人口与经济的全局和局部空间自相关分析,建立人口与经济发展耦合度模型与耦合协调度模型,分析人口与经济的空间耦合度的特征。研究结果表明:①重庆市的人口与经济整体水平有较好的发展趋势,但区域发展差异明显。②人口集中度和经济集中度总体上呈现“一圈高,两翼低”的特点。③2001-2012 年间重庆市人口与经济耦合度总体呈上升趋势,且人口与经济间的耦合作用不断增强。  相似文献   

17.
哈大产业带产业结构调整优化及重点产业发展   总被引:2,自引:0,他引:2  
哈大产业带是东北区的人口和产业密集带,是东北区的核心地带。文章分析了该产业带的产业发展优势,指出了产业发展存在的问题。根据产业结构调整优化原则与重点产业选择原则,结合定量分析,制定了产业结构调整优化方案,选出了重点产业。哈大产业带重点产业是农业及农产品加工业、机械工业、石化工业、高新技术产业、第三产业,本文探讨了各重点产业的发展思路与发展重点。  相似文献   

18.
Summary. The relationship between environmental archaeology and diatom analysis, a well established technique in palaeoecology, is explored. The development of diatom analysis for palaeoenvironmental reconstruction is briefly considered and flow diagrams are presented to illustrate laboratory techniques. Examples of research in Mexico, North America, Britain and Europe are discussed to illustrate the potential of diatom analysis as a means of assessing human impact on the environment, notably lake water quality, and as a means of elucidating the palaeoenvironmental conditions under which archaeological sediments have accumulated. Consideration is also given to the role of diatom analysis in examining land/sea-level changes, especially those which may have affected prehistoric resource use, and to its significance in the reconstruction of local environments in and around archaeological sites. Finally, the potential of fossil diatoms for provenancing pottery is explored with particular reference to Dutch and Finnish examples.  相似文献   

19.
This paper presents empirical evidence to support the labour demand theory of rising reproductive fertility in colonial Indonesia. According to this theory, birth rates in nineteenth-century Java rose as a direct result of the labour burden imposed upon women and their children by the Cultivation System of compulsory labour services. The theory was conceived in the 1970s as a reaction against the assumption that rapid population growth in colonial Indonesia must have reflected improvements in economic and health conditions under Dutch rule. The difficulty of testing the labour demand theory empirically, together with its counterintuitive quality and its ideological origins, led it to be sceptically received. However, newly-assembled statistical data from Minahasa—one of the few areas outside Java where compulsory cultivation services were introduced in the nineteenth century—suggest that the theory is in fact correct. The existence of a positive link between labour demand and fertility helps explain not only the paradox of population growth without rapid economic growth or public health improvements in nineteenth-century Java, but also the ‘involutionary’ cycle of agricultural intensification, population growth and impoverishment which seems to be a recurrent feature of Southeast Asian history.  相似文献   

20.
陶伟  黄荣庆 《人文地理》2006,21(3):10-13
城市游憩商业区的发展是和社会、政治、经济、城市本身的发展紧密联系在一起的。城市游憩商业区系统是一个多种因素共同作用的复合系统,它的空间位置、外在表现形态、功能与组织形式都在动态地演变着。通过对广州历史上游憩商业区的形成、空间结构的变迁以及影响其空间结构变迁的相关因素的研究,探讨城市游憩商业区发展的历史轨迹与一般性规律。  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号