Design of GIS-based monitoring and maintenance decision support system for urban sewage pipe network

Monitoring and maintenance of sewer system is important to city water environmental management. A method for pipeline monitoring and maintenance decision support system (PMMDSS) based on geologic information system (GIS) and decision making system (DSS) is developed for upgrading sewer system maintaining efficiency. Visual basic (VB) and standardized Active X components are employed in PMMDSS, which selected SuperMap Objects as the development platform. PMMDSS integrates the spatial and model system to achieve the decision analysis for the sewer system monitoring and maintenance. An application Software is developed based on a case study in Yuechi Country of Sichuan Province. The software can be used to dynamically monitor the heath condition and provide an optimum visual decision making platform for the city sewer system.     

Study of Information System of Urban Planning Based on Three Dimensions Geographical Information System Technolo

The 3D urban planning information system has been the focus topic in urban palnning management. In this paper,the related development of 3D urban planning is reviewed and the development object,data acquisition, system application level and three important characters of 3D urban planning information system have been also discussed. Thus, a system framework iseatablished. Finally,several primary problems are put forward and thought to be resolved to improve the practicability of 3D urban planning information system over large scale.     

Seismic Damage Analysis and Disaster Mitigation Approaches for Urban Gas Piping Systems

Based on the analysis of seismic damage effect and induced secondary disasters on urban gas piping systems, the seismic damage characteristics and influencing factors were discussed, such as seismic intensity, geologic conditions and piping system characteristics. Moreover a series of earthquake disaster mitigation approaches were proposed for urban gas piping system, including:(a)aseismatic design of urban gas facilities; (b)erosion monitoring and replacement of old pipelines;(c)automatic gas shut off system and district gas supply; (d) gas supply recovery after fault finding and treatment of damage pipelines; (e)establishment of real time seismic data acquisition and rapid pipeline damage estimation system; (f)establishment of emergency response management system; (g)establishment of urban gas network seismic disaster risk assessment and simulation system.     

浅论实现基于MapX的灌溉信息系统的关键技术

现代化的灌溉用水管理是实现农业高效用水的重要措施之一,它可实现灌溉水资源的合理配置和灌溉系统的优化调度,达到节水增产目的,使有限的水资源获得最大的效益。采用手工方式进行灌溉用水管理,难以及时提供水资源利用最优化方案,因此急需研制出具有网络通信功能的可视化操作界面的灌溉信息管理系统,为灌区水资源评价和利用、规划等工作奠定良好的数据基础。GIS不仅具有强大的空间数据管理功能,还具有丰富的多元地学数据分析处理能力和直观的图形显示效果,因此利用GIS进行灌区的管理与建设将会有效提高灌区的工作效率和经济效益。笔者在实践调研的基础上,根据灌溉信息管理系统的功能规划及结构设计,利用MapX组件工具开发了陕西省冯家山灌区灌溉信息系统,对提高灌溉用水的管理效率进行了实例尝试,并着重对下列关键技术的运用进行了实践与思考：（1）阐述了利用可视化编程工具结合数据库管理技术、地理信息系统组件技术、网络通信技术等进行系统开发的过程;（2）着重介绍了基于MapX组件的空间数据库的建立与关联技术、灌溉管理信息的网络通信实现技术;（3）最后对在灌溉管理工作中运用GIS技术进行科学管理等相关问题进行了有益的探讨。     

中国现代农业的基本特征

现代农业既不同于自给自足的原始农业,又不同于精耕细作的传统农业。它是一种以生物技术和信息技术为先导的技术高度密集的知识型产业。根据地域不同,中国的现代农业可分为农区农业、城郊农业和都市农业等类型。中国现代农业的基本特征主要表现为：农业产业结构的市场化、农业生产方式的集约化、农业经营形式的产业化、农业生产技术的智能化和农业生产管理的信息化等。     

专家系统在果树中的应用及研究进展

专家系统是一种模拟人类专家解决领域问题的计算机系统,它主要分为知识库、综合数据库、推理机、解释器、接口等几部分。现今,国内果树专家系统的应用类型主要分为果树栽培生产专家系统和果树营养、病虫害诊断防治决策系统两类;在果树专家系统上的应用研究最多的计算机理论主要是：人工神经网络、模糊神经网络、多媒体技术、Web技术等;果树专家系统的开发手段主要是利用现成的农业专家系统平台直接进行二次开发,还有少数是直接利用程序语言进行原型系统开发。今后随着信息技术的不断发展,利用果树学的特点结合先进的计算机理论和技术,将开发出动态的、更具智能化的果树专家系统。     

GIS技术在城市历史遗产保护管理中的应用研究进展

传统的历史遗产保护方法在信息处理和管理等方面具有较大的局限性。以世界遗产保护和管理机制发展为目标,通过国内外成功的案例解析遗产资源调查和信息整合GIS数据库的构建过程。分别阐述了GIS在文化遗产保护、区域文化与自然遗产保护、风景园林遗产保护等方面的实践应用情况。指出国内遗产保护领域应当多借助新的思维方式和研究方法,将GIS与其它数字化技术综合运用到遗产保护管理研究,今后尤其需要加强遗产价值和遗产文献资料保存、GIS系统检测等方面的研究。研究结果表明,信息处理、编写遗产文件、绘制专题地图是动态GIS数据库建设过程中的核心环节,可以有效挖掘历史城市突出的遗产价值,并有助于管理部门制定不同城市遗产文献保护和管理战略,从而为中国未来遗产保护和可持续发展提供可借鉴的创新思路。     

Integration framework and implementation technologies of integrated workshop production management system for motorcycle parts enterprise

According to the urgent need for motorcycle parts enterprise to improve the ability of information exchange and business collaboration between the production process and other links such as the marketing, design, production planning, outsourcing, purchasing and delivering, an integration framework of the intergraded workshop production management system for motorcycle parts enterprise is presented. It can be integrated with the designing and production planning management systems upwards, the workshop equipments and workers downwards, and the subcontract production and supply chain management systems outwards. Then, some key technologies are studied, such as the realization scheme of system integration based on Service Oriented Architecture (SOA), the data integration and sharing mechanism of heterogeneous information system based on eXtensible Markup Language (XML), and the real-time interaction technology of workshop information based on the multi-functional interactive information terminals, etc. Finally, the system is developed and successfully applied in a motorcycle parts enterprise, and good results are obtained.     

草地土壤管理信息系统的设计与实现

本文概述了草地土壤管理信息系统设计的意义、主要功能、特征、空间数据库和属性数据库的建立方法以及系统功能模块的设计与实现的方法,系统的建立不仅可为参与牧草产业体系管理的各个部门提供决策的参考信息,也可为用户进行有针对性的品种布局、科学施肥等提供指导性作用。     

Urban human activity density spatiotemporal variations and the relationship with geographical factors: An exploratory Baidu heatmaps-based analysis of Wuhan,China

With the development and popularity of mobile Internet technology, data sources of human activity in urban centers are rapidly updated and play an important role in supporting urban planning and management. Therefore, it is critical to integrate different data sources and detect spatially implicit information in the spatial pattern of relationships between urban human activity and related geographical factors. A new analytical framework is first proposed to integrate multisource location-based big data and use these data to analyze dynamic real-time human activity density (HAD). Taking Wuhan, the largest city in central China as an example, using the Baidu’s thermal data, this paper analyzes spatiotemporal characteristics of HAD distributions at different points on weekends and weekdays, and further combines the relevant cities’ points of interest data to analyze the correlations between different spatial elements and HAD distributions. The results show that: (a) Using a new indicator and data processing method can simply achieve effective utilization of Baidu’s thermal data; (b) Combined with standardized grids, spatial density estimation can match the two different data sources in this study; (c) The greater the HAD, the greater is the elasticity of change, and in the active population area, the densities of human activity on weekends and weekdays at different times have significant differences; and (d) Different geographically weighted regression models effectively distinguish the influence of different urban elements on weekdays and weekends. In particular, the impact patterns of the workplace, education, and cityscape reflect the unique spatial patterns of research cases. These findings, as well as visual analytics, help in the understanding of the potential value of Baidu heatmaps in urban study and provide support for more scientific and accurate urban planning and space management for the better consideration of real-time changes in human activity.     

Principle and Analysis of IEC61968

Distribution management utilizes the technique of electronics, computer, and automatics to supervise, control, or manage the distribution equipments and user equipments for improving the distribution management. Because the distribution management needs different systems of cooperation and realization of information sharing, realizing inter-application integration is difficult for electrical information system at present. On the background of distribution management system, through the analysis of the principle and character, feasibility of integration for disparate system, such as DMS, is discussed. The analysis results show that the information communication between disparate system, and the decoupling between interfaces and networks are realized by IEC61968. So it is feasible to integrate the disparate system by utilizing IEC61968.     

Application of Self-tuning Models to Air Handling Units for Fault Detection

Building management control systems (BMCS) are widely employed in modern buildings. The huge amount of data available on central stations and outstations provide rich information for fault diagnosis of HVAC systems. An online fault diagnosis method for variable air volume air handling units was presented using self-tuning HVAC component models. The model parameters are tuned online by using a genetic algorithm (GA) which minimizes the error between measured and estimated performance data, so high modeling accuracy is assured. If the error between measured and estimated performance data exceeds preset thresholds, it means the occurrence of faults or abnormalities in the air handling unit system. The statistical method of selecting thresholds also is presented. The fault detection method was tested and validated using data collected from real HVAC systems. The results of validation show that the fault detection method can be integrated in BMCS systems to detect faults in air handling unit systems efficiently.     

System of Financial Management in Branch Organization of Web-based Firm in Different Place

Information technique,espcialling network technique on the development and application in the manufacturing firms,has made working activity of them from innner data processing to resource's controlment and management(united) by time and space gradually.Financing information in the firm is the foremost managing information,and how to manage the financing systems of ecedemic branch organizations of the firms compositively in the network environment is a crucial subject.This paper gives a supporting web-based system of finacial management,establishes the sturcture of this system and researches the key techinique on system exploit and inner financial system of firm based the need of finacial management in the most of firms when they place branch organization in different place.At last,the authors certificate this system effective and pratical through the real examples.     

Cellular automata spatial temporal data model and forecasting approach

The standard cellular automata(CA) model is expanded to meet requests of space time dynamic simulation and forecast under the platform of geographic information system(GIS). Taking power load forecasting of the electric power industry as the specific application, the relations between dynamic model of the land use and power load space are established. The data and attribute data interactive discrete in spatial temporal data management have been solved. The CA theory is practically used to simulate the process of urban land use dynamic development, to forecast future land use types of each small area, to establish spatial load forecasting model. It breaks through the localization of all kinds of forecasting methods of traditional space time separation power prediction. The effectiveness of the prediction method is verified by example.     

Developing Method Based on Object-oriented Modeling Techniques for Management Information System

A developing method is given which based on object-oriented modeling techniques for management information systems.The modeling techniques,especially,from CDM to PDM conversion,make it possible that the method can be used for developing such management information systems which based on relational database.The result shows that it can raise the efficency of the system developing,improve the system tability,enhance the system maintenability.     

中国禽流感病毒毒株信息管理系统设计及实现

为满足国家禽流感参考实验室对中国禽流感毒株信息计算机化管理的需要,通过系统的需求分析,建立了毒株信息数据标准和数据结构模型,在此基础上设计出系统结构,开发出中国禽流感病毒毒株信息管理系统。系统的主要功能包括：信息录入、信息维护、信息查询及统计分析、报表系统以及系统安全等。该系统的开发和应用,实现了参考实验对信息计算机化管理的要求,为中国禽流感毒株信息的管理和利用提供了有效工具。     

城乡居民信息资源可获得性差异及其影响因素分析

信息资源作为农业生产首要要素,也是城乡融合发展的重要领域。在进一步加快城乡融合发展的进程中,了解城乡信息资源可获得性情况,具有重要的理论价值与现实意义。本研究基于全国31个省市自治区（除港、澳、台）的3296份城乡居民调研数据,对国内城乡信息资源可获得性差异及影响因素进行实证分析。研究结果表明,中国城乡居民信息资源可获得性差异较大,差异指数呈现出西部地区大于中部地区大于东部地区。城乡居民信息资源可获得性普遍受到性别、文化程度、家庭收入水平、网络接入以及信号强度因素的显著影响。应结合不同区域发展现状需求、不同居民特征,通过建立完善信息资源获取渠道、制定具有针对性的信息资源应用推广对策措施来加速推动城乡信息资源融合发展。     

Towards a geography of queer temporalities: Time,space and rural–urban migrant gay men's exploration of sexuality in China

Building on the geography of sexualities and queer temporality studies, this research investigates the entanglement of sexuality, time and space with a case study of rural–urban migrant gay men in China. Based on participant observations and in-depth interviews with 46 Chinese rural–urban migrant gay men, we identify three forms of queer temporality – queer biographical time, queer life stage, and queer clock time – emerging from Chinese gay men's life stories. We also demonstrate how these different forms of queer temporality are conditioned by and influence certain spatial practices among our informants. In doing so, this analysis contributes to the geographical research on sexuality by challenging the rural/urban dichotomy in the existing literature on the one hand, and exploring the possibilities for a geography of queer temporality on the other.     

基于GIS的河套灌区向日葵气候适宜性区划

利用河套灌区18年向日葵观测资料和相应气象资料,计算了向日葵各发育期气温、日照等要素,分析了各发育期适宜农业气象条件,并利用气候资料与气象产量建立了回归模型,通过地理信息系统将河套灌区向日葵种植进行了适宜分区。     

基于DEA的湖南省土地集约利用评价

研究城市土地集约利用,对中国城市土地资源节约利用具有重要的现实意义,有利于缓解目前中国人多地少、供地紧张的矛盾。以湖南省的14个市（州）城区作为评价对象,结合地区特点建立指标体系,首先选取2009年湖南各城市土地利用的截面数据,运用数据包络分析法（DEA）求出各评价单元的效率值,然后将各城区建设用地集约度进行排序。研究发现,湖南各城市土地空间集约度由高到低依次为：长沙、湘西自治州、常德、湘潭、郴州、益阳、娄底、永州、衡阳、岳阳、株洲、张家界、邵阳、怀化。研究结果可以为地方政府土地管理提供依据。