论南北宋陵布局     

娄昭  李娜 《地域研究与开发》2011,30(4)

宋代统治中国长达320年,在此期间,国家军力衰弱,饱受外敌欺凌,公元1127年,赵构在南阳称帝后逃至南方,后定都杭州,取名临安。南北两宋在政治、文化等领域可谓一脉相承,然而在陵墓布局上却差异很大。与论者所说的南宋六陵在布局上完全继承北宋的堪舆思想相去甚远,南北宋陵在整个陵园的布局所遵循的堪舆思想不同,在兆域内的布局也大相径庭,皇家丧葬文化在南北宋有明显差异,并且这种差异还影响到了明清皇陵布局。揭示南宋皇陵布局及堪舆思想的演变,还原历史,是该文写作的宗旨。  相似文献   

汶川地震灾后人口与居民点空间配置的适宜性评价   总被引：4，自引：1，他引：3  

方创琳  吴丰林  李茂勋 《地理学报(英文版)》2011,21(3):539-548

The suitability evaluation of population and settlements spatial layout in the mountainous areas is an important basis on which the scale of population and settlement after Wenchuan Earthquake is determined. Based on the statistical data of field research, this paper chooses 1264 towns in 51 counties as the scope of evaluation, selects eight indices in the evaluation index system which includes post-disaster population scale, population density, urbanization rate, the percentage of migrant workers, death rate by earthquake, the percentage of minorities, elevation-slope integrated terrain and comprehensive geological condition. Besides, this paper uses AHP supported by entropy technique and fuzzy membership function model to calculate the suitability evaluation index and then divides the disaster areas into five types: highly suitable area (area accounted for 11.03%), relatively highly suitable area (15.29%), moderately suitable area (29%), less suitable area (30.08%) and unsuitable area (14.6%). According to the result of suitability evaluation, this paper puts forward several suggestions for the reconstruction as follows: the urban system and the building of new countryside should be guided by the suitability evaluation subareas; post-earthquake reconstruction avoids zones near Longmenshan fracture and high-mountain gorge areas as far as possible; the scale of population and settlement should not exceed the capacity of resources and environment; population should be resettled as close as possible by considering adequately the heterogenicity and homogeneity of regional nationality culture characteristics; densely resettle the people at plains and hilly areas; encourage the migrant workers settle in the working place with their families voluntarily; and urban system reconstruction such as industry layout and important projects of lifeline should be guided by the spatial layout suitability evaluation.  相似文献   

求解多目标非线性优选问题的算法     

陶华学 《大地测量与地球动力学》2001,21(1):42-45

研究变形监测网布网方案的优化 ,探讨目标权重未知情况下的非线性多目标优化问题 ,给出了一个求解权重未知的多目标非线性优选问题的算法。该算法采用一种新的最小加权偏差优选方法 ,可优选最佳布网方案  相似文献   

DYNAMICAYOUT ADJUSTMENT AND NAVIGATION FOR ENTERPRISE GIS BASED ON OBJECT MARK RECOGNITION     

LAIWei YUDong-gang ZHONGYong-liang 《中国地理科学(英文版)》2003,13(1):73-78

In this paper a new method is developed to make a dynamic layout adjustemnt and navigation for enter-prise Geographic Information System(GIS) based on object mark recognition.The extraction of object mark images is based on some morphological structural patterns,which are described by morphological structural points,contour prolpety,and other geometrical data in a binary image of enterprise geographic information map.Some pre-processing methods,contour smooth following,linearization and extraction patterns of structural points,are introduced If any special object is selected to make a decision is a GIS map ,the all information around it will be obtained.That is ,we need to investigate similar object enterprises around selected region to analyse whether it is necessary for establishing the object enterprise at that place.To further navigate GIS map,we need to move from one region to another,Each time a region is formed and displayed based on the user‘s focus,If a focus point of a map is selected,in terms of extracted object mark image,a dynamic layout and navigation diagram is constructed.When the user changes the focus (I.e.click a node in the navigation mode),a new sub-diagram is formed by dropping old nodes and adding new nodes,The prototype system provides effective interfaces that support GIS image navigation,detailed local image/map viewing,and enterprise information browsing.  相似文献   

导线网精度预估问题的探讨     

武艳强  黄立人  江在森 《测绘科学》2007,32(5):52-54

本文通过对导线网平差理论的分析,可以知道影响导线网精度的因素主要包括两类:一类是观测精度,另一类是网型布设。通过分析两类因素的作用,并在实例中展现出来,找到了确定导线网最佳布设方案的方法。在作者编写的通用导线网精度预估软件中应用了此方法,取得了良好的效果。  相似文献   

基于供需匹配的养老服务设施规划布局研究     

彭建东  邢露  杨红 《地球信息科学学报》2022,24(7):1349-1362

人口老龄化是当前社会关注的重点问题之一,养老设施配置得合理与否对城市品质提升和社会公平地实现至关重要。当前对养老设施的研究已不在少数,但多从养老机构或社区养老设施的单一视角进行分析,评价内容集中于设施数量和空间分布的合理性,导致研究结果有所局限。因此,本文基于2018年武汉市社区级老年常住人口数据、2020年武汉市养老设施数据和道路交通等多源大数据,首先将社区养老设施纳入城市养老服务体系,并从养老设施和养老服务两大角度综合评价设施的供需匹配关系,结果表明： ① 区域层面,武汉市养老设施供需均呈现出中心城区集聚,外围分散的“核心-边缘”特征,但仍然存在数量等级体系不合理以及区域配置水平差距大等问题;② 社区层面,运用两步移动搜索法,发现武汉市养老设施供需匹配度：都市发展区>中心城区>外围城区;③ 养老服务上,武汉市医疗保健类和精神慰藉类服务供需匹配关系较差,且设施普遍缺少专业化的服务供给,高品质多样化的养老需求较难得到满足。针对武汉市养老设施和养老服务的供需匹配问题,本文从体系构建、空间布局以及实施管理方面提出了优化建议,同时运用最小设施点数模型将建议落实至空间层面,以期为类似地区养老设施规划提供有效参考。  相似文献   

Placement Optimization Method of FPSO Gas Detectors Based on Leakage Risk     

KANG Jichuan  SUN Chongwen  JIN Peng  YAN Fasuo  SUN Liping 《中国海洋大学学报(英文版)》2022,21(1):49-61

As the first step of the fire/gas-detection systems of floating production storage and offloading(FPSO)units is to iden-tify leakage accidents,gas detectors play an important role in controlling the leakage risk.To improve the leakage scenario detection rate and reduce the cumulative risk value,this paper presents an optimization method of the gas detector placement.The probability density distribution and cumulative probability density distribution of the leakage source variables and environmental variables were calculated based on the Offshore Reliability Data and the statistical data of the relevant leakage variables.A potential leakage sce-nario set was constructed using Latin hypercube sampling.The typical FPSO leakage scenarios were analyzed through computational fluid dynamics(CFD),and the impacts of different parameters on the leakage were addressed.A series of detectors was deployed according to the simulation results.The minimization of the product of effective detection time and gas leakage volume was the risk optimization objective,and the location and number of detectors were taken as decision variables.A greedy extraction heuristic algo-rithm was used to solve the optimization problem.The results show that the optimized placement had a better monitoring effect on the leakage scenario.  相似文献   

“天地图·宁夏”图面整理浅析     

姜奕婷 《测绘与空间地理信息》2013,(12):99-101

在全国“天地图”省级节点建设工作中,位于西北的宁夏回族自治区也是重要一环,文章阐述了在“天地图·宁夏”项目成果整理阶段,如何在适当的软硬件环境下,根据相应的数据基础,运用AdobeIllustrator软件,进行图面配置的方法,特别是配图时必须解决好的几个常见问题,如：调整道路的叠放顺序、POI符号及其注记处理、道路编码整理规范、水系注记的表达方式、地物矛盾的处理原则等,以期通过实践摸索,反复比较、改进,找到配图表达的最优方案,以期达到良好效果。  相似文献   

浅谈地矿企业资源产业布局及发展方向     

周松林  杨霄 《中国煤炭地质》2014,(12):94-96

矿产资源的需求具有波次递进性,发达国家资源需求已趋于稳定,而以中国为代表的正处于工业化的国家和以印度为代表的新一轮工业化国家的资源需求仍然强劲,这决定着矿业的持续与繁荣。我国地矿企业应准确把握全球矿产资源的供需状况,开展矿产资源全球化配置,配置不同层级的矿产项目,科学、合理选择项目区位和矿种,向着矿产资源资本化、矿业国际化、探采选冶贸一体化和完善混合所有制经济形式的方向发展,建立现代化大型地矿企业。  相似文献   

西北“水三线”地区生态经济枢纽区基本理论与建设布局     

张甜  黄晓燕  李鹏  党小虎  曹小曙  邓铭江 《地理学报》2022,77(9):2154-2173

中国西北地区长期面临资源组合不匹配、区域发展不平衡的问题,而空间区位又决定了其具备促进区域协调、沟通国际国内、调整经济结构、筑牢生态屏障的战略地位。建设具有引领作用的生态经济枢纽区,将有助于改善西北及全国的生态环境问题、提升全域生态安全水平,同时也对国家经济发展具有推动作用。本文立足中国西北“水三线”空间格局,依据国家战略定位与生态经济功能,基于对研究区人地环境、城市群与城镇发展体系、人口布局与民族构成的全面解析,解读生态经济枢纽区的基本内涵,其可归纳为生态功能区、经济枢纽区、文化融生区、深陆通道区四个方面。进一步,本文综合宏观布局、资源禀赋、生态环境、陆海统筹等视角,阐明了生态经济枢纽区建设的功能定位,构建了西北“水三线”地区极点带动、轴带支撑的总体空间布局。并提出河西、兰西、天山北坡、环塔里木盆地绿洲四大生态经济枢纽区的建设格局与发展途径,探索了生态经济枢纽区与国家战略布局的互动关系。以期助力中国新时期西部大开发形成新格局,为中国“一带一路”的“深陆”研究提供科学依据。  相似文献