东昆仑野马泉地区矽卡岩矿床地质特征及控矿条件

野马泉地区蕴藏有丰富的矽卡岩型铁、铜、铅、锌、银矿床等,是东昆仑地区重要的多金属矿产地之一。对野马泉多金属矿床的产状、矿物共生组合、矿石结构构造、围岩蚀变类型等进行了研究,查明矿床主要产于花岗岩与围岩的接触面及其附近的断裂带中,其形成与区域晚古生代-早中生代构造岩浆旋回末期的岩浆活动关系密切,属岩浆矽卡岩型矿床。     

如何利用计算机技术进行地图投影变换

在目前流行的计算机制图中，必须面对如何解决使用不同投影的地图资料的问题，本文从实际应用的角度出发，介绍并讨论解决方法及应用手段。     

Application of singular spectrum analysis to identify the degrading structure using deteriorating distributed element model

Reinforced concrete structure may exhibit significant inelastic hysteretic behavior when subject to strong earthquake excitation. To investigate such an inelastic behavior, in this study, a new system identification technique is applied by using the deteriorating distributed element (DDE) model to simulate the hysteretic behavior of a degrading structure. Through the advanced signal processing technique, the multiple singular spectrum analysis (SSA) and the nonlinear SSA, the recorded inelastic restoring force of a deteriorating structure can be decomposed into several independent additive components in its sequentially degrading order and with decreasing weight. With each decomposed hysteresis loop, the model parameters of the DDE model are identified. The evolutionary properties of the progressive stiffness degradation behavior of reinforced concrete structure can be observed from the identified model parameters. Finally, comparison on the physical properties of the identified DDE model with respect to the seismic response data of the deteriorating structure is also discussed. The result shows that the proposed identification technique can have a good estimation on the seismic behavior of the degrading structure. Copyright © 2012 John Wiley & Sons, Ltd.     

利用地质雷达探测青岛港木质高桩码头承台完整性

利用EKKO－100型探地雷达对青岛港木质高桩码头承台完整性进行探测，结合现场钻探、孔内波速测试、岩样分析测试，进一步对码头的工程性状进行了分析和评价。     

Modeling the potential distribution of shallow-seated landslides using the weights of evidence method and a logistic regression model： a case study of the Sabae Area, Japan

A number of statistical methods are typically used to effectively predict potential landslide distributions. In this study two multivariate statistical analysis methods were used （weights of evidence and logistic regression） to predict the potential distribution of shallow-seated landslides in the Kamikawachi area of Sabae City, Fukui Prefecture, Japan. First, the dependent variable （shallow-seated landslides） was divided into presence and absence, and the independent variables （environmental factors such as slope and altitude） were categorized according to their characteristics. Then, using the weights of evidence （WE） method, the weights of pairs comprising presence （w^＋（i）） or absence （w^-（i））, and the contrast values for each category of independent variable （evidence）, were calculated, Using the method that integrated the weights of evidence method and a logistic regression model, score values were calculated for each category of independent variable. Based on these contrast values, three models were selected to sum the score values of every gird in the study area. According to a receiver operating characteristic curve analysis （ROC）, model 2 yielded the best fit for predicting the potential distribution of shallow-seated landslide hazards, with 89% correctness and a 54.5% hit ratio when the occurrence probability （OP） of landslides was 70%. The model was tested using data from an area close to the study region, and showed 94% correctness and a hit ratio of 45.7% when the OP of landslides was 70%. Finally, the potential distribution of shallow-seated landslides, based on the OP, was mapped using a geographical information system.     

基于物联网和GIS的供水管网巡检系统的设计与实现

为了提高供水管网巡检效率,基于GIS和物联网技术设计实现了供水管网巡检系统。该系统能够有效地解决地理信息分析问题,也为管网改造、爆管抢修等业务提供支持,并为管网设备管理提供了科学化、制度化的保障。     

基于WebServices的新农村公共服务平台设计与实现

本文针对新农村公共服务平台在信息交互性方面的需求及WebGIS在此方面的不足,提出基于RIA和WebServices的在线交互空间异构属性数据方法,分析相关空间异构属性数据类型,阐述相应数据模型和自定义WebServices的设计思路和基于该方法的四川省某县新农村公共服务平台主要功能的实现。     

中国城市异速增长分析

在对国内外城市异速增长方程的讨论进行回顾的基础上,采用1990年、2000年和2005年中国城市建成区和人口普查的城镇人口数据,分析了中国城市用地与城镇人口之间的异速增长关系.在对标度因子的标准值进行充分讨论后.认为1990年中国城市增长是负异速增长,2000年和2005年呈现正异速增长的状态,中国东、西部城市样本也表现出这种规律,而中部城市在1990年,2000年保持了原有的建设用地与人口增长的比例,但在中部崛起的政策下,2005年表现为正异速增长,该结论与中国在流动人口的变化、住房体制改革和开发区快速拓展有密切关系.     

家用太阳能热水器防雷工程设计

通过对家用太阳能热水器结构以及它安装在屋顶的特殊性的认识,从直击雷防护和防雷电波侵入两个方面进行了讨论,并进行了相应的防雷工程设计。