Results 21 to 30 of about 271,473 (265)

Smart Public Transportation Sensing: Enhancing Perception and Data Management for Efficient and Safety Operations

open access: yesSensors, 2023
The use of cloud computing, big data, IoT, and mobile applications in the public transportation industry has resulted in the generation of vast and complex data, of which the large data volume and data variety have posed several obstacles to effective ...
Tianyu Zhang   +5 more
doaj   +1 more source

Querying Similar Multi-Dimensional Time Series with a Spatial Database

open access: yesISPRS International Journal of Geo-Information, 2023
Similar time series search is one of the most important time series mining tasks in our daily life. As recent advances in sensor technologies accumulate abundant multi-dimensional time series data associated with multivariate quantities, it becomes a ...
Zheren Liu, Chaogui Kang, Xiaoyue Xing
doaj   +1 more source

Enhanced Extrinsic Calibration Method for Camera-LiDAR Fusion and Monitoring of Safety Threats to Power Transmission Lines [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Collision detection for ensuring safe navigation around power transmission lines is a critical task for maintaining operational safety. With advancements in sensor technology, cameras and LiDAR have been increasingly utilized for monitoring potential ...
Y. Lao   +5 more
doaj   +1 more source

GeoWebCln: An Intensive Cleaning Architecture for Geospatial Metadata

open access: yesQuaestiones Geographicae, 2022
Developments in big data technology, wireless networks, Geographic information system (GIS) technology, and internet growth has increased the volume of data at an exponential rate. Internet users are generating data with every single click.
Sheoran Savita Kumari, Parmar Vinti
doaj   +1 more source

A spatial decision support system for traffic accident prevention in different weather conditions

open access: yesActa Geographica Slovenica, 2021
Natural conditions play an important role as determinants and cocreators of the spatiotemporal road traffic accident Hot Spot footprint; however, none of the modern commercial, or open-source, navigation systems currently provides it for the driver.
Danijel Ivajnšič   +3 more
doaj   +1 more source

Topological queries in spatial databases

open access: yesProceedings of the fifteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems, 1996
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Christos H. Papadimitriou   +2 more
openaire   +2 more sources

Design and development of advanced spatio temporal database models [PDF]

open access: yesBig Data and Computing Visions
The researchers have presented a spatial database model for geometric path planning suitable for facilitating disaster management activities. The spatial queries executed using the proposed approach can reduce the computational time needed to find an ...
Garima Jolly, Sunita Bhatti
doaj   +1 more source

Representation and Reasoning for Model of 3DR46 in Complex 3D Space

open access: yesJisuanji kexue yu tansuo, 2020
To remedy the deficiency of the existing methods on 3D direction relations, the 3DR46 direction relations model is proposed. The model can represent and distinguish 246 complex 3D direction relations. To process the dynamic of 3D direction relations, the
HAO Xiaohong, LI Song, HAO Zhongxiao
doaj   +1 more source

Direction-Aware Nearest Neighbor Query

open access: yesIEEE Access, 2019
Although the direction aspect is as important as the distance aspect when retrieving spatial objects, the studies of direction-aware queries are limited. The direction-based surrounder query cannot guarantee good directional diversity.
Xi Guo, Xiaochun Yang
doaj   +1 more source

Thematic Geovisualization of the Data Profile of Kaligesing, Purworejo, Central Java

open access: yesForum Geografi, 2019
The scientific field has a variety of purposes, one of which is the presentation of data and information which can be used by other parties to support their decision making. Moreover, the information is presented spatially.
Sudaryatno Sudaryatno   +2 more
doaj   +1 more source

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