Multi‐Scale Qualitative Location: A Topology‐Based Model

Qualitative locations describe spatial objects by relating the spatial objects to a frame of reference (e.g. a regional partition in this study) with qualitative relations. Existing models only formalize spatial objects, frames of reference, and their relations at one scale, thus limiting their applicability in representing location changes of spatial objects across scales. A topology‐based, multi‐scale qualitative location model is proposed to represent the associations of multiple representations of the same objects with respect to the frames of reference at different levels. Multi‐scale regional partitions are first presented to be the frames of reference at multiple levels of scale. Multi‐scale locations are then formalized to relate multiple representations of the same objects to the multiple frames of reference by topological relations. Since spatial objects, frames of reference, and topological relations in qualitative locations are scale dependent, scale transformation approaches are presented to derive possible coarse locations from detailed locations by incorporating polygon merging, polygon‐to‐line and polygon‐to‐point operators.     

Remote Sensing Image On‐Demand Computing Schema for the China ZY‐3 Satellite Private Cloud‐Computing Platform

Time is a crucial factor for many remote sensing applications such as emergency response. The traditional approach requires users to spend a lot of time downloading, processing, and viewing satellite images with specialized software. Realizing interactive real‐time processing and visualization of satellite images online is our focus. This article presents an On‐Demand computing schema for remote sensing images. A processing chain model is proposed for satellite images on a private cloud computing platform designed for the China Centre for Resources Satellite Data and Application (CCRSDA). The architecture, processing flow, optimization method, fault tolerance, and user interface are described in detail. To test the efficiency and scalability of the platform, 11 processing chains were created and three load balance experiments were executed. The results from these experiments show the validity of the proposed methods and architecture.     

信息监理在地铁结构自动化监测系统中的应用

从地铁结构自动化监测系统的体系架构和功能特点出发,引出本项目信息监理工作的难点,并从感知层、网络层和应用层剖析监理工作的重点。以组织、制度和规范等保障措施,用现场旁站、专家评审和测试等主要监理方法来保证信息系统全面和多学科交叉的地铁结构自动化监测系统监理工作质量。     

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Use of Nash's IUH and DEMs to identify the parameters of an unequal‐reservoir cascade IUH model

Under the assumption that hydrograph generation was affected by n linear reservoirs with the same value of storage coefficient k, Nash proposed the formulation of the Instantaneous Unit Hydrograph (IUH), which has been widely used in rainfall–runoff simulation and flood forecasting. However, the assumption of the parameter k having the same value in all reservoirs is obviously unphysical as it results in the estimated value of n not being integral. In this study, for parameter n integral, the different k value for each reservoir was derived using the Laplace transform and developing a general rule for the equation of the IUH of any order. The relationship between parameter k and the slope of the river channel estimated using digital elevation model (DEM) data is established, the parameter estimation procedures are given. As in most unit hydrograph studies, only isolated storm events are considered here. Seventeen flood events in three catchments were selected for the case studies. Application results show that the proposed method is slightly better than Nash's IUH with higher model efficiency and smaller absolute relative errors. This work provides a new methodology for the formulation of the IUH. Copyright © 2008 John Wiley & Sons, Ltd.     

Geochemistry and spatial distribution of late-Paleozoic mafic volcanic rocks in the surrounding areas of the Gonghe Basin: Implications for Majixueshan triple-junction and east Paleotethyan archipelagic ocean

The late-Paleozoic mafic volcanic rocks occurring in the surrounding areas of the Gonghe basin are distributed in the A’nyêmaqên ophiolite zone, Zongwulong tectonic zone and Kuhai-Saishitang volcanic zone. The mafic volcanics in the A’nyêmaqên zone formed an ancient ridge-centered hotspot around the Majixueshan OIB, the Kuhai-Saishitang mafic rocks consist of E-MORB and continental rift basalts and the Zongwulong volcanic rocks are enriched N-MORB. The regionally low Nb/U and Ce/Pb ratios reflect the influence of the OIB material on the mafic magma source. From geochemistry, spatial distribution and tectonic relationship of the mafic rocks, an ancient triple-junction centered at the Majixueshan can be inferred. The existence of the Kuhai-Saishitang aulacogen may have provided a tectonic channel for the Majixueshan OIB materials metasomatizing the magma source for the Zongwulong rocks. The formation of the triple-junction and the rifting of the Zongwulong zone have separated the orogens and massifs in the region.

     

山东省省级基础地理信息系统建设探讨

前言 基础地理信息的生产提供和更新维护，一直是各级测绘行政主管部门履行基础测绘保障的重要职能。按照《中华人民共和国测绘法》和《山东省测绘管理条例》规定，基础测绘实行分级管理。其中，省级基础地理信息系统的建设、维护与更新，是省级基础测绘工作的主要内容。     

地分割证在房地产交易中的应用

当前，各地房地产市场活跃，房地产交易日益频繁，房地产价格一路攀升，在房地产交易中，当你用攒了半辈子的钱买了一套新房却长期拿不到土地使用证的时候，当你想进行房地产交易却因“两证”不全暗自焦急的时候，当你为办理各种房产证明不得不四处奔波的时候，就会想有没有一种措施能做到便民、省心呢？     

Delineation of different phytoplankton communities in the East China Sea mackerel and carangoid fishing ground

Delineation of phytoplankton communities in this study was based on: 1) cluster analysis by Preston's Equation (1962) and 2) analysis of the number of individuals. Results obtained by these two methods were very similar to that obtained in a previous study (Fig. 1, Gu and Guo, 1982) based on analysis of the number of planktonic species of different ecological nature. Among these three methods, that based on cluster analysis (by which some subcommunities could be recognized) proved to be the best. Contribution No. 1841 from the Institute of Oceanology, Academia Sinica.     

Summer temperature-salinity distributions and circulation characteristics of the source water of the Tsushima Warm current

Based on the data obtained in the area southwest of Kyushu in the summer of 1987, the temperature-salinity distribtutions and circulation characteristics are described and the origin of the Tsushima Warm Current is analysed.