Results 31 to 40 of about 48,284 (242)

Global 3D-Grids Based on Great Circle Arc QTM Sphere Octree and Its Application [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
With the development of computers, network communications, scientific computing, mapping remote sensing and geographic information technologies, Discrete Global Grids (DGGs) and Earth System Spatial Grid（ESSG）have become the integrated spatial data model
J. X. Wang, Y. H. Li, Y. S. Zheng, J. N. Liu   +3 more
doaj   +1 more source

Duality and Dimensionality Reduction Discrete Line Generation Algorithm for a Triangular Grid

ISPRS International Journal of Geo-Information, 2018
Vectors are a key type of geospatial data, and their discretization, which involves solving the problem of generating a discrete line, is particularly important. In this study, we propose a method for constructing a discrete line mathematical model for a
Lingyu Du, Qiuhe Ma, Jin Ben, Rui Wang, Jiahao Li   +4 more
doaj   +1 more source

The extended-Octree Spheroid Subdivision and Coding Model [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Discrete Global Grid has been widely used as the basic data model of digital earth. But it is only confined to the earth surface, and it can not reach to the earth inside or outside.
X. F. Cao, G. Wan, F. Li, K. Li
doaj   +1 more source

A GtoG Direct Coding Mapping Method for Multi-Type Global Discrete Grids Based on Space Filling Curves

ISPRS International Journal of Geo-Information, 2022
DGGS (Discrete Global Grid System) has many subdivision models and coding methods. Due to the lack of underlying consistency of different DGGS codes, most of them are converted through longitude–latitude, which greatly reduces the interoperability ...
Yalu Li, Xuesheng Zhao, Wenbin Sun, Guangsong Wang, Fuli Luo, Zheng Wang, Yuanzheng Duan   +6 more
doaj   +1 more source

The Study on Error Analysis of Discretization Area in Discrete Global Grid System

Procedia Environmental Sciences, 2011
AbstractThe research of area calculation error is the base of discretization of area in discrete global grid system. The error source of discretization of area was analysed and a calculation experiment was designed to calculation the errors of discretization of area. The true area and discretization area were calculated.
Tao, Ming, Wen, Yuan, Xiong, Peng Guang, Su, Li, Zhangang, Wang   +4 more
openaire   +1 more source

The Expression of Discretization Line and Error Analysis in Discrete Global Grid System

Procedia Environmental Sciences, 2011
AbstractThe discretization error of line in discrete global grid system is a major factor which affect the precision of discretization line and accuracy of the result of the spatial analysis. The error source of discretization of line were analysed firstly in this article.
Tao, Ming, Wen, Yuan, Su, Li, Xiong, Peng Guang   +3 more
openaire   +1 more source

Efficient Distortion Mitigation and Partition Reduction in Mapping Global Geodata: Dual Orthogonal Equidistant Cylindrical Projection Approach

ISPRS International Journal of Geo-Information, 2023
The rapid growth in Earth’s global geospatial data necessitates an efficient system for organizing the data, facilitating data fusion from diverse sources, and promoting interoperability.
Aleksandar Dimitrijević, Aleksandar Milosavljević, Dejan Rančić   +2 more
doaj   +1 more source

Discrete global grid system flow routing datasets in the Amazon and Yukon basins [PDF]

Earth System Science Data
Discrete global grid systems (DGGS) are emerging spatial data structures widely used to organize geospatial datasets across scales. While DGGS have found applications in various scientific disciplines, including atmospheric science and ecology, their ...
C. Liao, D. Engwirda, M. G. Cooper, M. Li, Y. Fang   +4 more
doaj   +1 more source

Field Report from Collaborative Research Center 1625: Heterogeneous Research Data Management Using Ontology Representations

Advanced Engineering Materials, EarlyView.
A unified research data management framework for heterogeneous materials data is presented. The system integrates multimodal datasets using ontologies and knowledge graphs, enabling interoperability and FAIR (findable, accessible, interoperable, reusable) data principles. By linking data across scales and workflows, it supports reproducible, Artifitial
Doaa Mohamed, Samuel García Vázquez, Behnam Mardani, Victor Dudarev, Alfred Ludwig, Maribel Acosta, Markus Stricker   +6 more
wiley   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

Advanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch, Maximilian Holland, Klaus Drechsler, Johannes Schilp   +3 more
wiley   +1 more source