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| 1 | A capability matching and ontology reasoning method for high precision OGC web service discovery显示文摘Finding the right spatially aware web service in a heterogeneous distributed environment using criteria such as service type,version,time,space,and scale has become a challenge in the integration of geospatial information services.A new method for retrieving Open Geospatial Consortium(OGC)Web Service(OWS)that deals with this challenge using page crawling,link detection,service capability matching,and ontology reasoning,is described in this paper.Its major components are distributed OWS,the OWS search engine,the OWS ontology generator,the ontology-based OWS catalog service,and the ontology-based multi-protocol OWS client.Experimental results show that the execution time of this proposed method equals only 0.26 of that of Nutch’s method.In addition,the precision is much higher.Moreover,this proposed method can carry out complex OWS reasoning-based queries.It is being used successfully for the Antarctica multi-protocol OWS portal of the Geo-Information Web Service Portal of the Polar. | Nengcheng Chen Zeqiang Chen Chuli Hu Liping Di | 2011 | International Journal of Digital Earth2011，4，6： | 6 |
| 2 | A DISTRIBUTED HYPERMAP MODEL FOR INTERNET GIS显示文摘The rapid development of Internet technology makes it possible to integrate GIS with the Internet,forming Internet GIS.Internet GIS is based on a distributed client/server architecture and TCP/IP & IIOP.When constructing and designing Internet GIS,we face the problem of how to express information units of Internet GIS.In order to solve this problem,this paper presents a distributed hypermap model for Internet GIS.This model provides a solution to organize and manage Internet GIS information units.It also illustrates relations between two information units and in an internal information unit both on clients and servers.On the basis of this model,the paper contributes to the expressions of hypermap relations and hypermap operations.The usage of this model is shown in the implementation of a prototype system. | Yuan Xiangru Chen Nengcheng Gong Jianya | 2000 | Geo-Spatial Information Science2000，3，4： | 4 |
| 3 | Spatio-temporal enabled urban decision-making process modeling and visualization under the cyber-physical environment显示文摘Urban management is increasingly dependent on the construction of cyber-physical systems, which have been widely deployed in multiple fields, including agriculture, transportation, and health care. Cyberphysical systems provide a large volume of big sensory data. Thus, the application of big data for urban emergency decision-making has become a challenge. Traditional decision-making models are unable to overcome several technical problems, including spatio-temporal information support and access to real-time service for disaster management and emergency response. In this paper, we propose a spatio-temporal enabled urban decision-making process modeling method in the cyber-physical environment and discuss the development off our basic metadata components, the definition of eleven-tuple information description structure. A prototype system is designed for modeling registering, management, visualization, and other functions. Decision-making processes are implemented as composite process chains through three phases, i.e., decision-making process modeling,instantiation of the decision-making process chain and execution of the decision-making process chain. For application to gas leak events, the decision-making process is executed to confirm the feasibility of the proposed decision-making process modeling method and the flexibility of the eleven-tuple information structure. | WANG Wei HU ChuanBo CHEN NengCheng XIAO ChangJiang WANG Chao CHEN ZeQiang | 2015 | Science China(Information Sciences)2015，58，10： | 3 |
| 4 | A framework design for the Chinese National Disaster Reduction System of Systems(CNDRSS)显示文摘China is one of the most disaster-prone countries in the world.Currently,the disaster prevention and relief mechanism in China is mainly based on single disaster types and is implemented by different ministries and divisions in single administrative regions.Subsequently,the available resources,including data,services,materials,and human resources,cannot be shared and used effectively.Based on the idea of an observation system of systems and a business system of systems,this paper presents an integrated framework for a Chinese National Disaster Reduction System of Systems(CNDRSS)to address this issue.The CNDRSS framework aims to achieve data sharing and collaboration among different disaster-related ministries/institutions by providing one-stop services for all phases of disaster management and linking together existing and planned disaster-related business systems and observation systems.The key technologies use federated databases and a web service to integrate multiple disaster management systems among different ministries/institutions and a sensor web to integrate airborne,space-borne,and in-situ observations through the web service.These event-driven focused-services connecting the various observations,processing,and mapping processes can meet the requirements for complex disasterchain systems. | Deren Li Linglin Zeng Nengcheng Chen Jie Shan Liangming Liu Yida Fan Wei Li | 2014 | International Journal of Digital Earth2014，7，1： | 3 |
| 5 | Soil moisture estimation based on BeiDou Bl interference signal analysis显示文摘BeiDou Navigation Satellite System reflectometry(BDS-R) is an emerging area of BD(BeiDou) applications that uses multipath reflected signals in microwave remote sensing.Soil moisture estimation is one of the potential important applications of BDS-R.This study aims to investigate the feasibility of soil moisture estimation based on BD B1 band interference signals,which are composed of direct and reflected BD signals and can be readily captured using low-cost commercial BDS receivers.In this paper,a theoretical background for soil estimation from interference signals was introduced,and an analysis of field experimental data was conducted.First,a cosine model for the interference signal power was built,and a non-uniform power spectrum analysis was performed on the received interference signals to determine its main frequency.Then,a least squares curve fitting was applied on the interference signal power to extract its phase.The relationship between the soil moisture and the phase was then determined.Two months of experimental data were collected at BaoXie,Wuhan and analyzed for further inversion.Experimental results show that the phase of the interference signals increases with the increase of soil moisture.The correlation coefficient between the phase and the in-situ soil moisture value is approximately 0.8.Finally,the relationship between the phase and soil moisture is employed to estimate soil moisture.Results show that using BDS-R to measure soil moisture is feasible,which demonstrates a great potential of new application of the BD system. | YAN SongHua ZHAO Fen CHEN NengCheng GONG JianYa | 2016 | Science China(Information Sciences)2016，59，12： | 3 |
| 6 | Progress and challenges in the architecture and service pattern of Earth Observation Sensor Web for Digital Earth显示文摘The Earth Observation(EO)Web is the data acquisition and processing network for digital Earth.The EO Web including Data Web and Sensor Web has become one of the most important aspects of the Digital Earth 2020.This paper summarised the history of the development and status quo of the major types of EO data web service systems,including architecture,service pattern and standards.The concepts,development and implementation of the EO Sensor Web were reviewed.Furthermore,we analysed the requirements on the architecture of the next-generation EO Sensor Web system,namely Space-borne-Airborne-Ground integrated Intelligent EO Sensor Web system,and highlighted the virtualization,intelligent,pervasive and active development tendency of such system. | Nengcheng Chen Xu Chen Ke Wang Xiaoguang Niu | 2014 | International Journal of Digital Earth2014，7，12： | 2 |
| 7 | Space-based information service in Internet Plus Era显示文摘'Internet Plus' represents a new form of society that provides a vast platform for reform, innovation,and development. Given the continued integration of the Internet in many fields, Internet Plus is profoundly transforming and influencing a variety of traditional industries. Internet Plus has created conditions favorable for the transformation of earth observation and satellite navigation into an intelligent and real-time geospatial information service. The authors propose that in order to implement continuous, all-weather, all-terrain services for the specific purposes of each individual, it will be necessary to overcome the flaws in existing space-based information systems, such as limited regional coverage, slow response, and weak interoperability. Furthermore, to meet the Big Data Era's geospatial information service requirements, an 'Internet Plus Space-Based Information Service' system, intrinsically linked to ground Internet networks, will have to be constructed. With reference to the developments of aerospace information technology, this paper discusses three levels of the proposed structure of the Internet Plus space-based information service system and ideas for its implementation. Finally,in recognition of the demands facing the Internet Plus space-based information service system, the prospects for geomatics and important supporting technologies are examined. | Deren LI Xin SHEN Nengcheng CHEN Zhifeng XIAO | 2017 | Science China(Information Sciences)2017，60，10： | 2 |
| 8 | KING GEORGE ISLAND SPATIAL DATA MODEL显示文摘Distribution,interoperability,interactivity,component are four main features of distributed GIS.Based on the principle of hypermap,hypermedia and distributed database,the paper comes up with a kind of distributed spatial data model which is in accordance with those features of distributed GIS.The model takes catalog service as the outline of spatial information globalization,and defines data structure of hypermap node in different level.Based on the model,it is feasible to manage and process distributed spatial information,and integrate multi_source,heterogeneous spatial data into a framework.Traditionally,to retrieve and access spatial data via Internet is only by theme or map name.With the concept of the model,it is possible to retrieve,load,and link spatial data by vector_based graphics on the Internet. | CHEN Nengcheng GONG Jianya | 2001 | Geo-Spatial Information Science2001，4，2： | 2 |
| 9 | Cosine-Modulated Transceivers for TV White Space Cognitive Access显示文摘 | ZHAO Nan PU Fangling XU Xin CHEN Nengcheng | 2012 | Chinese Journal of Electronics2012，21，2： | 2 |
| 10 | Use of Service Middleware Based on ECHO with CSW for Discovery and Registry of MODIS Data显示文摘现在, NASA 正在生产几 terabytes 中等分辨率成像分光辐射函数(MODIS ) 数据每天;怎么与标准发现数据,例如用一个国际标准的特定的时间,地点,和规模变得越来越重要。在这份报纸,为有户外 Geospatial 协会(OGC ) 目录服务鈥擶e b 侧面(CSW ) 的集成地球观察系统票据交换所(回响) 的使用的面向服务的体系结构被提出。建筑学由三个角色组成:一个服务请求者(用户) ,一个服务供应商(回响元数据服务器) ,和一个服务经纪人(GeoNetwork CSW 和 MODIS 注册表服务中间件) 。核心部件 -- MODIS 登记服务中间件包括三个部件:元数据 fetcher,元数据变压器,和元数据收款机。元数据 fetcher 被用来从回响元数据服务者取元数据;元数据变压器为从一种形式的变换元数据负责到另外一个;元数据收款机负责登记基于 ISO19139 的元数据到 CSW。一个原型系统被使用服务中间件技术和一个标准接口和协议设计并且实现。可行性和登记的反应时间和 MODIS 数据的检索借助于现实主义的 LPDAAC_ECS 被评估 MODIS 数据中心。这个原型系统和体系结构和方法可行、有效的实验表演的实现。 | CHEN Zeqiang CHEN Nengcheng | 2010 | Geo-Spatial Information Science2010，13，3： | 2 |
| 11 | Effect of esomeprazole and rabeprazole on intragastric pH in healthy Chinese: An open, randomized crossover trial显示文摘 | Zhao‐ShenLi Xian‐BaoZhan Guo‐MingXu Neng‐NengCheng ZhuanLiao | 2006 | Journal of Gastroenterology and Hepatology2006，，6： | 1 |
| 12 | A flexible data and sensor planning service for virtual sensors based on web service 显示文摘 | Chen Zeqiang Chen Nengcheng Di Liping | 2011 | IEEE Sensors Journal2011，11，6： | 1 |
| 13 | A flexible geospatial sensor observation service for diverse sensor data based on Web service显示文摘 | Nengcheng Chen Liping Di Genong Yu Min Min | 2009 | ISPRS Journal of Photogrammetry and Remote Sensing2009，，2： | 1 |
| 14 | Geoscience model service integrated workflow for rainstorm waterlogging analysis显示文摘This paper proposed a geoscience model service integrated workflowbased rainstorm waterlogging analysis method to overcome the defects of conventional waterlogging analysis systems.In this research,we studied a general OGC WPS service invoking strategy,an automatic asynchronous invoking mechanism of WPS services in the BPEL workflow,and a distributed waterlogging analysis services integrated workflow to realize the reconstruction of a waterlogging analysis model based on the proposed method.The proposed method can make use of the flexible adjustment capability of the workflow and not only overcomes the inherent defects of conventional geoscience analysis methods but also realizes the integration and calculation of distributed geospatial data,models and computing resources automatically.The method has better construction convenience,execution reliability,extensibility and intelligence potential than a conventional method and has important value for dealing with more natural disasters and environmental challenges. | Xicheng Tan Jingguo Jiao Nengcheng Chen Fang Huang Liping Di Jinchuan Wang Zongyao Sha Jin Liu | 2021 | International Journal of Digital Earth2021，14，7： | 1 |
| 15 | Integration of hydrological observations into a Spatial Data Infrastructure under a Sensor Web environment显示文摘Various sensors connected to the World Wide Web are used to obtain real-time hydrological observations.Thus,real-time management and utilization of such distributed in situ observations in the cyber-physical environment becomes possible.A Sensor Observation Service(SOS)chaining Web Feature Service(WFS)method is proposed to integrate geographical reference observation data collected by a hydrological Sensor Web into a virtual globe.This method hides the complexity of a series of information and service models in the Sensor Web realm to enable the integration of heterogeneous distributed hydrological data sources into a Spatial Data Infrastructure(SDI).The core components-a dynamic schema transformer and automatic information extractor-were designed and implemented.The SOS schema is matched to WFS schema that uses the schema transformer dynamically.The information extractor extracts and serves features automatically,conforming to standard SOS operations for observation retrieval and insertion.Feasibility experiments conducted on the Jinsha River tested this proposed method.Results show that the proposed approach allows the integration of SOS servers into legacy applications that have a higher degree of availability within many SDIs.However,this is accompanied with the drawback that only a limited part of the SOS functionality is available to clients. | Zhong Zheng Nengcheng Chen Pengfei Li Wei Wang | 2013 | International Journal of Digital Earth2013，6，S02： | 1 |
| 16 | Cyber-physical Geographical Information Service-Enabled Control of Diverse In-situ Sensors显示文摘 | Chen Nengcheng Xiao Changjiang Pu Fangling | 2015 | Sensors2015，15，2： | 1 |
| 17 | A Heterogeneous Sensor Web Node Meta-model for the Management of a Flood Monitoring System显示文摘 | Chen Nengcheng Wang Ke Xiao Changjiang | 2014 | Environmental Modeling & Software2014，54，： | 1 |
| 18 | Geo-processing workflow driven wildfire hot pixel detection under sensor web environment显示文摘 | Nengcheng Chen Liping Di Genong Yu Jianya Gong | 2009 | Computers and Geosciences2009，，3： | 1 |
| 19 | A Flexible Geospatial Sensor Observation Service for Diverse Sensor Data Based on Web Service显示文摘 | Chen Nengcheng Di Liping Yu Genong | 2009 | ISPRS Journal of Photogrammetry and Remote Sensing2009，64，2： | 1 |
| 20 | Cloud Computing Enabled Web Processing Service for Earth Observation Data Processing 显示文摘 | Chen Zeqiang Chen Nengcheng Yang Chao | 2012 | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing2012，5，6： | 1 |
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