共查询到19条相似文献，搜索用时 750 毫秒
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改进的粒子群算法在商业网点选址中的应用 总被引：1，自引：1，他引：0
针对当前商业网点选址问题,在采用GIS空间分析得到的粗略范围的基础上,构建了一个基于K-medoids聚类的粒子对算法模型;通过ArcObjects二次开发,将其应用于商业网点选址中的准确选址;并通过案例说明了方法的可行性和有效性。 相似文献
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传统零售商业网点选址模型主要是基于统计的静态模型。分析了影响零售商业网点选址的人口、经济、市场竞争三个关键要素，结合GIS，提出了一种基于权重设置的零售商业网点选址评价模型，并阐述了模型的应用流程。该模型在深圳市罗湖区公共信息服务平台中进行了典型应用实现，并检验了模型的应用可行性。 相似文献
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我国在发展新常态与城市精细化治理背景下，对城市更新精准施策与量化评估提出了更高的要求。城市更新过程与人、地、房的相互作用紧密相关。不动产登记数据包含丰富的人、地、房空间属性信息，能够在城市的建成环境评估过程中发挥重要作用，现有城市更新评估模型几乎均未使用这一数据支持。本文从大数据量化评估视角出发，在文献研究的基础上，利用不动产登记大数据构建城市更新潜力评估体系，建立评估方法，并以南京市为应用案例，在街道（乡、镇）尺度上，对评估对象区域进行城市更新潜力的量化评估，实现精细化尺度的空间分析，辅助城市更新方向与选址，引导精准施策。 相似文献
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基于GIS的商业网点选址研究与实现 总被引：2，自引：0，他引：2
利用平面／网络优化模型，综合权衡市区选址的基本费用及商业网点日常经营的成本，引入交通便利因子作为限制条件，并运用直接搜索的Dixon方法，加强了不确定性选址问题的约束条件，降低不确定性问题计算的复杂度，减少在选址问题实现中主观因素对选址结果的影响。最后以某区新建商业网点选址为例，详细分析了直接搜索算法应用的具体过程。 相似文献
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N. Rama Rao P. K. Garg S. K. Ghosh 《Journal of the Indian Society of Remote Sensing》2006,34(1):69-78
Motivated by the increasingly availability and importance of hyperspectral remote sensing data, this study aims to determine
whether current generation narrowband hyperspectral remote sensing data could be used to estimate vegetation Leaf Area Index
(LAI) accurately than the traditional broadband multispectral data. A comparative study has been carried out to evaluate the
performance of the narrowband Normalized Difference Vegetation Index (NDV1) derived from Hyperion hyperspectral sensor with
that of derived from IRS LISS-III for the estimation of LAI of some major agricultural crops (e.g. cotton, sugarcane and rice)
in part of Guntur district, India. It has been found that the narrowband NDVI derived from Hyperion has shown better results
over its counterpart derived from broadband LISS-III. Linear regression models have been used which with selected subsets
of individual Hyperion bands performed better to predict LAI than those based on the broadband datasets, although the potential
to overfit models using the large number of available Hyperion bands is a concern for further research. 相似文献
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利用销售福利彩票所筹集的社会福利基金已成为发展我国社会福利事业的重要经济支柱,研究福利彩票销售点的合理布局具有重要的现实意义。基于兰州市福利彩票销售点位置数据,结合城市道路、行政区划、GDP及人口统计等数据,利用GIS空间分析和数理统计方法,系统分析兰州市福利彩票销售点空间分布特征。结果表明：①兰州市福利彩票销售点在空间上呈现明显的区域差异,城关区最多;七里河区和西固区较少;安宁区最少。②兰州市福利彩票销售点在4个城区的空间格局也存在一定差异,其中在城关区和七里河区呈密集分布,且前者福利彩票销售和密度高于后者,而在西固区和安宁区呈分散分布。③兰州市福利彩票销售点空间格局的形成主要受人口数量、交通便利程度和居民人均收入等因素影响。④兰州市福利彩票销售点的这种不均衡分布一方面势必影响福利彩票销量;另一方面也加剧了福利彩票销售点之间的竞争,其中在城关区竞争最为激烈,西固区和安宁区则较弱,这两个行政区可成为今后建设福利彩票销售点的主要区域。 相似文献
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N. K. Patel M. Chakraborty S. Dutta C. Patnaik J. S. Parihar S. C. Moharana A. Das B. K. Sarangi G. Behera 《Journal of the Indian Society of Remote Sensing》2004,32(2):125-143
Considering the requirement of multiple pre-harvest crop forecasts, the concept of Forecasting Agricultural output using Space,
Agrometeorology and Land based observations (FASAL) has been formulated. Development of procedure and demonstration of this
technique for four in-season forecasts for kharif rice has been carried out as a pilot study in Orissa State since 1998. As
the availability of cloud-free optical remote sensing data during kharif season is very poor for Orissa state, multi-date
RADARSAT SCANSAR data were used for acreage estimation of kharif rice. Meteorological models have been developed for early
assessment of acreage and prediction of yield at mid and late crop growth season. Four in-season forecasts were made during
four kharif seasons (1998-2001); the first forecast of zone level rice acreage at the beginning of kharif crop season using
meteorological models, second forecast of district level acreage at mid growth season using two-date RADARSAT SCANSAR data
and yield using meteorological models, third forecast at late growth season of district level acreage using three-date RADARSAT
SCANSAR data and yield using meteorological models and revised forecast incorporating field observations at maturity. The
results of multiple forecasts have shown rice acreage estimation and yield prediction with deviation up to 14 and 11 per cent
respectively. This study has demonstrated the potential of FASAL concept to provide inseason multiple forecasts using data
of remote sensing, meteorology and land based observations. 相似文献
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Dilip G. Durbude B. K. Purandara Arun Sharma 《Journal of the Indian Society of Remote Sensing》2001,29(1-2):47-58
An accurate assessment of run-off through aerial rainfall is a basic concept in most of the rainfall-runoff models, particularly conceptual models which emphasis a complete water balance. The run-off measurements by gauging can only be regarded as an index of rainfall and restrict our ability to successfully model the rainfall-runoff process. To overcome some of these problems, remote sensing satellite data are of immense use, particularly in mountainous and desert areas. Therefore in the present study, a typical watershed from a drought hit Banswara district of Rajasthan has been analysed using IRS-1B-LISS II satellite imagery for estimating the run-off potential under different geomorphic set-up. The run-off potential was estimated using SCS method based on the satellite data in conjunction with ground truth information collected during field visit. The results indicated that the soil and water conservation measures in the watershed would improve the existing water potential and storage capacity of the study area. Based on the study eight check dams and five lift irrigation schemes are proposed. 相似文献
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This paper compares and contrasts alternative methods for the construction of discontinuous population surface models based on the census and remotely sensed data from Northern Ireland. Two main methods of population distribution are employed: (1) a method based on redistribution from enumeration district (ED) and postcode centroids, and (2) a method based on dasymetric redistribution of ED population counts to suitable land cover zones from classified remotely sensed imagery. Refinements have been made to the centroid redistribution algorithm to accommodate an empirical measure of dispersion, and to allow redistribution in an anisotropic form. These refinements are evaluated against each other and the dasymetric method. The results suggest that all of the methods perform best in urban areas, and that while the refinements may improve the statistical performance of the models, this is at the expense of reduced spatial detail. In general, the techniques are highly sensitive to the spatial and population resolution of the input data. 相似文献
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随着经济的快速发展,城市内部空间结构不断优化。识别城市功能区空间分布及其相互作用规律,对于把握城市空间结构以及制定科学合理的规划具有重要意义。采用重尾打断分类法和核密度聚类法对兴趣点（points of interest,POI）进行分析,识别城市功能区,并结合出租车轨迹数据进行时空挖掘,定量分析典型城市功能区交通吸引规律及其相互作用强度和方向。以北京市五环内主城区为例进行分析,可得:①该方法可以识别典型功能区西单、国贸、中关村是以商业为主的混合城市功能区,望京是以居住为主的混合功能区,且居民通勤出行特征明显;②国贸对自身的引力较强（39.4%）,说明国贸区域城市功能更加齐全;③典型功能区对居民出行距离范围内的区域吸引力随着距离的增加而减弱,符合经验认知和地理空间衰减规律。结果表明,利用POI和移动大数据采用重尾打断分类法和核密度聚类法进行城市功能区识别与分析是可行和有效的。 相似文献
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C. R. Shiva Prasad R. S. Reddy T. R. Srinivasan Prabhakara 《Journal of the Indian Society of Remote Sensing》1988,16(4):37-42
This study deals with the technique of remote sensing for identifying and deliniating wastelands in Kolar district of Karnataka. False colour composites of thematic mapper (TM) data supplemented by aerial photographs and toposheets wrere utiliesd for mapping wastelands. A map showing the geographic distribution of the wastelands in the districts was prepared on 1∶250,000 scales by compiling the individual wasteland sheets of 1∶50,000 scale. The seven different catagories of wastelands identified and mapped cover about 11.7% of the area in the district. A procedure for mapping wastelands has been worked out based on the experience gained in Kolar district which is a three phase system comprising image intrepretation of false colour composite of TM data, aerial photo interpretation and limited ground truth verification in the selected doubtful areas. This procedure was found to be adequate enough for mapping wastelands accurately in the shortest possible time with least expense and as such are recommended for mapping wastelands in other districts of the country. 相似文献
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研究了基于3DS MAX软件的校园三维模型的制作步骤和方法,讨论了校区建模的数据采集、纹理生成、模型修改等关键技术;特别阐述了室内建模的制作方法和技巧,弥补了三维室内建模的空白。 相似文献