搜索结果: 151-165 共查到“知识库 信息与通信工程”相关记录15362条 . 查询时间(0.369 秒)
ASSESSING THE CONDITION OF BURIED PIPE USING GROUND PENETRATING RADAR (GPR)
Ground Penetrating Radar (GPR) Pipe deterioration Buried utilities
2018/10/26
The invention of Ground Penetrating Radar (GPR) technology has facilitated the possibility of detecting buried utilities and has been used primarily in civil engineering for detecting structural defec...
INVESTIGATING THE NATIONAL DIGITAL CADASTRAL DATABASE (NDCDB) DATA HANDLING WITHIN GIS APPLICATIONS
National Digital Cadastral Database Multi-case study patial analysis
2018/10/26
This paper explains the investigation carried out to understand NDCDB data handling within GIS applications. The method used was a case study replicated to five established GIS applications from diffe...
典型通信铁塔抗震性能及地震易损性
通信铁塔 静力推覆分析 增量动力分析 地震易损性
2018/9/29
通信铁塔的地震易损性研究是通信系统震后灾害评估和预测的基础工作之一，但在以往的通信系统地震灾害评估研究中，这一工作被忽略了。在对北方某城市大量通信铁塔进行调研的基础上，选取了3个典型通信铁塔（50 m高四方塔、30 m高四方塔和50 m高单管塔）作为研究对象，采用有限元软件ABAQUS建立了数值模型；通过对3个铁塔的静力推覆分析，得到了处于不同损伤状态下的损伤指标数值；通过增量动力分析，得到了3个...
CONSISTENCY AND RELEVANCE OF VGI AVAILABLE FROM SOCIAL NETWORKS FOR EMERGENCY MITIGATION AND MUNICIPAL MANAGEMENT
Volunteered Geographic Information (VGI) Flickr, Emergency Mitigation
2018/9/19
Volunteered geographical information (VGI) is an increasing source of data for many applications. In order to explore some of these sources of data, an algorithm was conceived and implemented in the E...
IDENTIFICATION OF SIMILARITIES AND PREDICTION OF UNKNOWN FEATURES IN AN URBAN STREET NETWORK
urban traffic traffic analysis machine learning clustering
2018/9/19
Accurate predictions of the characteristics of urban streets in particular with respect to the typical traffic situations are crucial for numerous real world applications such as navigation, schedulin...
HISTORICAL SDI, THEMATIC MAPS AND ANALYSIS OF A COMPLEX NETWORK OF MEDIEVAL TOWERS (13TH–15TH CENTURY) IN THE MOORISH STRIP
GIS, Historical SDI, Spatial Data Analysis, Visibility, Medieval heritage, Towers of Moorish Strip
2018/9/19
This work is part of an investigation into the use of GIS for the documentation and comprehension of medieval architectural heritage in the ancient Kingdom of Seville. The research was done in the fra...
DATA INTEGRATION OF DIFFERENT DOMAINS IN GEO-INFORMATION MANAGEMENT: A RAILWAY INFRASTRUCTURE CASE STUDY
3D city model multi-dimensional modelling multi-source data integration
2018/9/19
A 3D city model is a representation of an urban environment with a three-dimensional geometry of common urban objects and structures, with buildings as the most prominent feature. In the last decades,...
ON VOLUME DATA REDUCTION FOR LIDAR DATASETS
LiDAR Redundancy Q-tree Big Data Problem Topography DTM
2018/9/19
This paper discusses a current issue for several experimental science disciplines, which is the Big Data Problem (BDP). This research study focused on light intensity and ranging (LiDAR) datasets, whi...
COMBINED VISUAL EXPLORATION OF 2D GROUND RADAR AND 3D POINT CLOUD DATA FOR ROAD ENVIRONMENTS
Ground Penetrating Radar 3D Point Cloud Infrastructure Maintenance
2018/9/12
Ground-penetrating 2D radar scans are captured in road environments for examination of pavement condition and below-ground variations such as lowerings and developing pot-holes. 3D point clouds captur...
PREDICTION BASED WORKLOAD PERFORMANCE EVALUATION FOR DISASTER MANAGEMENT SPATIAL DATABASE
Disaster Management Large Spatial Database Shortest Path Dijkstra Algorithm
2018/9/12
This paper discusses a prediction based workload performance evaluation implementation during Disaster Management, especially at the response phase, to handle large spatial data in the event of an eru...
MODELING TREES FOR VIRTUAL SINGAPORE: FROM DATA ACQUISITION TO CITYGML MODELS
LiDAR virtual city tree extraction and quantification procedural tree modeling
2018/9/12
Singapore, branded as a “City in a Garden”, has a long standing commitment to green the nation, one which has resulted in trees becoming an integral component of the urban environment. Similarly for i...
AUTOMATED BUILDING DETECTION IN DENSE POINT CLOUD AND UPDATE OF OPEN SOURCE DATA BASES
Dense matching, Building detection Classification Digital Terrain Model openstreetmap point cloud
2018/9/12
In this paper a method of detecting buildings in dense populated city areas using a three-dimensional model, produced by aerial images, is described. Further to the detection of the outline of the bui...
以接运地铁站点的多方式接驳网络内出行者接驳方式选择行为为研究对象，改进既有接驳时间费用的计算方法.本文考虑地铁站点不同接驳方式的接驳范围对出行者选择行为的影响，建立基于Logit-SUE的多方式接驳网络配流模型，并通过算例证明了模型的可行性和有效性.进而分析出行者对路径阻抗感知系数θ、接驳距离增加系数β和共享单车停车位设置距离l?bike对配流结果的影响.结果表明：θ越大，配流结果随机性越弱，实际...
为应对人们日益增加的货物需求与货车进城难题，提出整合地铁网和道路交通网，形成以地铁列车和城市配送车辆为载体的地铁配送网络.考虑列车开行时间表、客户服务时间窗、城市配送车辆容量等限制条件，构建带时间窗的地铁配送网络路径优化模型，综合优化地铁列车班次的客户分配、出站点的客户分配及末端配送路径.设计随机变邻域的迭代搜索算法(ILS-RVND)进行求解，以成都市地铁3号线运输货物为例，验证了模型和算法的实...