Results 31 to 40 of about 5,687,015 (319)

PDBTM: Protein Data Bank of transmembrane proteins after 8 years [PDF]

open access: yes, 2012
The PDBTM database (available at http://pdbtm .enzim.hu), the first comprehensive and up-to-date transmembrane protein selection of the Protein Data Bank, was launched in 2004.
Bass   +33 more
core   +1 more source

A storage and access architecture for efficient query processing in spatial database systems [PDF]

open access: yes, 1993
Due to the high complexity of objects and queries and also due to extremely large data volumes, geographic database systems impose stringent requirements on their storage and access architecture with respect to efficient query processing.
A. Hutflesz   +7 more
core   +3 more sources

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

Evaluation of Topological Consistency in CityGML

open access: yesISPRS International Journal of Geo-Information, 2019
Boundary representation models are data models that represent the topology of a building or city model. This leads to an issue in combination with geometry, as the geometric model necessarily has an underlying topology.
Anna Giovanella   +2 more
doaj   +1 more source

Efficient classification of billions of points into complex geographic regions using hierarchical triangular mesh [PDF]

open access: yes, 2014
We present a case study about the spatial indexing and regional classification of billions of geographic coordinates from geo-tagged social network data using Hierarchical Triangular Mesh (HTM) implemented for Microsoft SQL Server.
Bodor, András   +6 more
core   +2 more sources

The combination of spatial access methods and computational geometry in geographic database systems [PDF]

open access: yes, 1991
Geographic database systems, known as geographic information systems (GISs) particularly among non-computer scientists, are one of the most important applications of the very active research area named spatial database systems. Consequently following the
Brinkhoff, Thomas   +2 more
core   +2 more sources

Mapping Europe into local climate zones [PDF]

open access: yes, 2019
Cities are major drivers of environmental change at all scales and are especially at risk from the ensuing effects, which include poor air quality, flooding and heat waves.
Bechtel, Benjamin   +3 more
core   +2 more sources

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

Spatial grouping resolves ambiguity to drive temporal recalibration. [PDF]

open access: yes, 2011
Cross-modal temporal recalibration describes a shift in the point of subjective simultaneity (PSS) between 2 events following repeated exposure to asynchronous cross-modal inputs-the adaptors. Previous research suggested that audiovisual recalibration is
Arnold, D. H., Roseboom, W., Yarrow, K.
core   +1 more source

Is ChatGPT a Good Geospatial Data Analyst? Exploring the Integration of Natural Language into Structured Query Language within a Spatial Database

open access: yesISPRS Int. J. Geo Inf.
With recent advancements, large language models (LLMs) such as ChatGPT and Bard have shown the potential to disrupt many industries, from customer service to healthcare.
Yongyao Jiang, Chaowei Yang
semanticscholar   +1 more source

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