Results 81 to 90 of about 20,029 (299)
PostGIS-powered proximity queries: implementation and Google Maps visualization [PDF]
PeerJ Computer ScienceLocation-based services require efficient methods to calculate nearby points of interest. This article presents an implementation methodology for proximity queries using PostgreSQL’s PostGIS extension, focusing on the ST_DWithin function and spatial ...
Pavan Kumar Papasani, Ravi Teja Papasani
doaj +2 more sources
SPAG: Index of spatial agglomeration
Papers in Regional Science, 2019 The paper develops a spatial agglomeration index (SPAG) of the economic activity for the point geo‐localizations of firms. It includes the effects of location, the distance between firms and the overlapping impact of the firms' size. The SPAG builds a new class of measures of the spatial density of the economic activity inside the region, based on the ...
Katarzyna Kopczewska +3 more
openaire +2 more sources
YIPFα1A expression is regulated by multilayered molecular mechanisms
FEBS Open Bio, EarlyView.YIPFα1A, a five‐pass Golgi protein, is regulated at multiple layers. (1) Rare‐codon enrichment drives translation‐coupled mRNA decay. (2) A proximal 3′‐UTR element stabilizes mRNA. (3) A distal 3′‐UTR element included by alternate poly(A) site usage represses translation, which can be overridden by the proximal 3′‐UTR element.
Tokio Takaji +2 more
wiley +1 more source
A spatial-indexing model for measuring neighbourhood-level land-use and transport integration
, 2014 Significant attention has been given in urban policy literature to the integration of land-use and transport planning and policies—with a view to curbing sprawling urban form and diminishing externalities associated with car-dependent travel patterns. By
Dur, Fatih +2 more
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Spatial Color Indexing Using Rotation, Translation, and Scale Invariant Anglograms [PDF]
, 2001 As color plays an essential role in image composition, many color indexing techniques have been studied for content-based image retrieval. This paper examines the use of a computational geometry-based spatial color indexing methodology for effective and ...
Tao, Yi, Grosky, William I.
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FEBS Open Bio, EarlyView.The crystal structure of Borrelia burgdorferi nicotinamidase (PncA/BBE22) reveals the correct full‐length protein initiated from a non‐canonical AUU start codon. The structure validates previous biochemical findings and resolves a long‐standing annotation error, demonstrating that the truncated database sequence is structurally incompatible with the ...
Kalvis Brangulis
wiley +1 more source
, 2008 Sensor networks have opened new horizons and opportunities for a variety of environmental monitoring, surveillance and healthcare applications. One of the major tasks of sensor networks is the distributed collection and processing of sensor readings over
For Spatial Queries +2 more
core
Remote SensingRadar is critical for urban security against Unmanned Aerial Vehicles (UAVs), yet signal occlusion caused by dense buildings and complex urban structures remains a major challenge for coverage assessment. Existing approaches commonly rely on 2D maps or 2.
Linhui Jiao +6 more
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FEBS Open Bio, EarlyView.IGFBP4 knockdown (KD) impairs preadipocyte proliferation and is associated with IGF1R protein downregulation and attenuated AKT phosphorylation. The mechanisms by which IGFBP4 KD influences the IGF1R/AKT signaling pathway involve newly synthesized proteins and lysosomal degradation pathways. Created in BioRender.
Yujia Guo +6 more
wiley +1 more source
Optimizing Spatial Databases [PDF]
This paper describes the best way to improve the optimization of spatial databases: through spatial indexes. The most commune and utilized spatial indexes are R-tree and Quadtree and they are presented, analyzed and compared in this paper. Also there are
Åžtefan OLARU, Anda VELICANU
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