Results 21 to 30 of about 5,687,015 (319)

Optimization of Spatial Joins Using Filters [PDF]

open access: yes, 1995
When viewing present-day technical applications that rely on the use of database systems, one notices that new techniques must be integrated in database management systems to be able to support these applications efficiently.
Apers, P.M.G.   +2 more
core   +5 more sources

Computing the inverse of cardinal direction relations between regions

open access: yesJournal of Intelligent Systems, 2022
The inversion of directions is an important operation with directions which plays an important role in qualitative spatial reasoning and spatial queries. In this work, we address on the inversion operation of the basic cardinal direction relations in the
Wang Miao   +5 more
doaj   +1 more source

Efficient Processing of Spatial Joins Using R-Trees [PDF]

open access: yes, 1993
: In this paper, we show that spatial joins are very suitable to be processed on a parallel hardware platform. The parallel system is equipped with a so-called shared virtual memory which is well-suited for the design and implementation of parallel ...
Becker L. A.   +10 more
core   +4 more sources

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

Spectral pre-modulation of training examples enhances the spatial resolution of the Phase Extraction Neural Network (PhENN) [PDF]

open access: yes, 2018
The Phase Extraction Neural Network (PhENN) is a computational architecture, based on deep machine learning, for lens-less quantitative phase retrieval from raw intensity data.
Barbastathis, George, Li, Shuai
core   +2 more sources

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

Determinants Of Healthy Ageing For Older People In European Countries – A Spatio-Temporal Approach [PDF]

open access: yes, 2016
The article aims to investigate the relationship between the length of the further life in healthy for men and women aged 65 years and selected factors in European countries in the period 2005-2012.
Suchecka, Jadwiga, Urbaniak, Bogusława
core   +2 more sources

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

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