新时代体育人口强省建设的综合评价及发展对策研究——以江苏省为例

体育人口是体育事业发展的重要体现，也是体育强国、体育强省建设的重要内容。因此，系统揭示省域单元体育人口发展的格局特征和短板不足，将有助于推进体育强国背景下体育强省建设。本文在界定体育人口强省内涵的基础上，运用熵权法、GIS空间可达性分析和聚类分析等方法，从规模、结构、质量和增速4个维度构建评价体育人口强省建设的指标体系，评价江苏体育人口发展的现状，基于此提出新时代江苏体育人口强省建设的对策措施。研究结果表明：江苏13个地级市体育人口规模、结构、质量和增速存在较大区域差距，苏北地区多数指标发展较不充分；依据体育人口强县建设的综合水平可划分为4类区域：沿江地区是体育人口发展较优区域，苏北和沿海地区体育人口发展明显滞后；结合驱动体育人口强省建设的主要动力：经济发展、基础设施、教育和文化水平、体制机制等要素，提出提升发展质量、优化结构、缩小分布差异、完善发展机制等新时代江苏体育人口强省建设的对策建议。     

基于GIS的嘉陵江北碚段岸坡地质灾害危险性评价研究

运用投影寻踪聚类评价方法和GIS空间叠置方法对重庆市北碚区嘉陵江段岸坡的地质灾害危险性进行了评价,研究发现:岸坡稳定性差的面积为18.98%,稳定性较差的面积为37.77%,两者之和占研究区总面积的56.75%;滑坡、泥石流多分布在向斜与背斜的过渡区域、河湾的凹岸和支流汇入处;基于加速遗传法的投影寻踪评价方法可以用于地质灾害研究,确定因子图层权重.     

铁路列车流交通特性仿真分析

现代企业物流已广泛采用即时制运输模式，铁路货运面对多批次轻量化运输服务需求，一贯追求重栽的战略遇到了挑战，需要在输送量、牵引质量、旅行速度、行车密度之间进行权衡。铁路列车交通流特性是寻求最佳配置上述技术参数的基础。给定试验的机车牵引性能曲线，应用模拟模型计算线路上列车运行的空间平均速度，对铁路列车运行的交通流特性进行数值分析。根据数值模拟结果得出列车流量-密度和速度-密度关系曲线。分析结果显示在一定条件下提速不会降低输送量，存在一个最优组合。     

基于相对系统误差估计的组网雷达点迹融合技术

雷达组网点迹融合系统中,雷达系统误差的存在导致雷达点迹的空间配准精度不能满足数据关联和点迹融合的需求。提出一种基于相对系统误差估计的组网雷达点迹融合技术,即将各雷达观测统一到本地雷达的系统误差基准上,以实现精确的点迹空间配准。这种融合技术能提高融合航迹的精度,改善多目标环境下数据关联的正确率,并且当本地雷达功能失效时,融合中心可以采用远方雷达点迹进行补盲,实现精确的航迹维持。仿真实验验证了以上结论。     

集安市旅游资源空间结构分析

地区旅游资源总体情况和空间结构决定了旅游开发的可行性和模式。同样,区域旅游吸引力的强弱也基本取决于旅游资源的本底状况和空间组合情形。基于此,本文以集安市为研究对象,首先分析其旅游资源特征;其次通过旅游资源集聚效应以及连接度分析、通达度分析等相关空间结构分析法对旅游资源状况进行定量分析,结果发现集安市旅游网络回路性较差,主要旅游景区（点）的网络通达性一般;进而提出优化发展的建议。     

土地利用视角下的景观要素空间关系分析——以厦门市为例

提出了基于矢量数据和拓扑关系的景观要素空间关系研究方法,介绍了应用GIS技术计算景观要素空间联系度指数和空间关联度指数的方法,并以厦门市为例,从土地利用视角对景观要素空间关系及其变化进行分析。研究结果表明,期间厦门市景观要素存在明显分异的空间关联格局且总体趋向交错分散,反映了区域城市发展和地域开发的基本格局,特别是围绕建设用地扩张和农田变更的空间邻接特征变化,揭示了人类活动对区域土地利用格局变化的控制作用。     

Applications of systematic approaches in freshwater conservation planning

Systematic conservation planning （SCP） is a widely accepted biodiversity-focused approach to selecting priority areas for protection. Since freshwater ecosystems are globally in urgent need of more conservation and the development of freshwater protected areas has lagged behind such need, SCP is proposed to be widely applied in freshwater conservation. As SCP originates from terrestrial realms, freshwater-specific characteristics should be con- sidered when applied to freshwater systems. The chal- lenges mainly include difficulty in data collection for freshwater species and uncertainty in classification of coarse-filters for representation, while also considering the maintenance of natural connectivity in fresh waters and taking longitudinal, lateral, and climate-change-caused threats into account. Only by addressing these issues may the representativeness and persistence of freshwater bio- diversity be ensured in the proposed conservation network. Though challenging at times, the application of systematic approaches in freshwater conservation planning has been widely attempted throughout the last 12 years and applied in different freshwater ecosystems at different scales. In addition, the consideration of freshwater-specific issues has been becoming more and more comprehensive. This review divides the whole process of SCP into successive steps while discussing detailed applications of freshwater planning at each step. First, according to the review, each step attempts to explore many alternatives, such as usingsurrogates from the species level to the ecosystem level （or a combination within this range） to represent the spatial variation of freshwater biodiversity, deriving raw data from various sources to use for planning, applying different techniques to expand or integrate data, setting various target forms to ensure representativeness or persistence, considering existing protected areas in different ways in the process of planning, using priority principles in various paradigms for both representativ     

A shortest path algorithm for moving objects in spatial network databases

One of the most important kinds of queries in Spatial Network Databases （SNDB） to support location-based services （LBS） is the shortest path query. Given an object in a network, e.g. a location of a car on a road network, and a set of objects of interests, e.g. hotels, gas station, and car, the shortest path query returns the shortest path from the query object to interested objects. The studies of shortest path query have two kinds of ways, online processing and preprocessing. The studies of preprocessing suppose that the interest objects are static. This paper proposes a shortest path algorithm with a set of index structures to support the situation of moving objects. This algorithm can transform a dynamic problem to a static problem. In this paper we focus on road networks. However, our algorithms do not use any domain specific information, and therefore can be applied to any network, This algorithm＇s complexity is O（klog2i）, and traditional Diikstra＇s comolexitv is O（（i ＋ k）^2）.     

西藏念青唐古拉山东段冰湖的时空分布特征及其影响因素探讨

冰湖是研究气候变化的重要指标之一,了解冰湖分布和变化的特征,对认识冰湖与气候之间关系和研究冰湖溃决泥石流灾害有着重要意义。本文拟利用1976年、1988年、2001年和2013年四个期次冰川、冰湖的遥感解译结果进行分析,得出1976年至2013年念青唐古拉山东段冰川与冰湖发育分布特征,对念青唐古拉山区东段冰川消融以及气候垂直变化具有一定的指示作用,同时为冰湖溃决泥石流灾害的预测预警提供依据。