Results 81 to 90 of about 3,471,337 (333)
2DPR-Tree: Two-Dimensional Priority R-Tree Algorithm for Spatial Partitioning in SpatialHadoop
ISPRS International Journal of Geo-Information, 2018 Among spatial information applications, SpatialHadoop is one of the most important systems for researchers. Broad analyses prove that SpatialHadoop outperforms the traditional Hadoop in managing distinctive spatial information operations.
Ahmed Elashry +3 more
doaj +1 more source
Spatial keyword query processing
Proceedings of the VLDB Endowment, 2013 Geo-textual indices play an important role in spatial keyword querying. The existing geo-textual indices have not been compared systematically under the same experimental framework. This makes it difficult to determine which indexing technique best supports specific functionality.
Chen, Lisi +3 more
openaire +2 more sources
Molecular Oncology, EarlyView.Meta‐transcriptome analysis identified FGF19 as a peptide enteroendocrine hormone associated with colorectal cancer prognosis. In vivo xenograft models showed release of FGF19 into the blood at levels that correlated with tumor volumes. Tumoral‐FGF19 altered murine liver metabolism through FGFR4, thereby reducing bile acid synthesis and increasing ...
Jordan M. Beardsley +5 more
wiley +1 more source
SGIR-Tree: Integrating R-Tree Spatial Indexing as Subgraphs in Graph Database Management Systems
ISPRS International Journal of Geo-InformationEfficient spatial query processing in Graph Database Management Systems (GDBMSs) has become increasingly important owing to the prevalence of spatial graph data.
Juyoung Kim +4 more
doaj +1 more source
Error-bounded and Number-bounded Approximate Spatial Query for Interactive Visualization
Open Geosciences, 2018 In the big data era, an enormous amount of spatial and spatiotemporal data are generated every day. However, spatial query result sets that satisfy a query condition are very large, sometimes over hundreds or thousands of terabytes.
Qiu Agen +3 more
doaj +1 more source
Spatial Query Optimization: From Boolean Constraints to Range Queries
Journal of Computer and System Sciences, 1995 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Helm, R., Marriott, K., Odersky, M.
openaire +2 more sources
RIPK4 function interferes with melanoma cell adhesion and metastasis
Molecular Oncology, EarlyView.RIPK4 promotes melanoma growth and spread. RIPK4 levels increase as skin lesions progress to melanoma. CRISPR/Cas9‐mediated deletion of RIPK4 causes melanoma cells to form less compact spheroids, reduces their migratory and invasive abilities and limits tumour growth and dissemination in mouse models.
Norbert Wronski +9 more
wiley +1 more source
On trip planning queries in spatial databases [PDF]
, 2004 In this paper we discuss a new type of query in Spatial Databases, called Trip Planning Query (TPQ). Given a set of points P in space, where each point belongs to a category, and given two points s and e, TPQ asks for the best trip that starts at s ...
Cheng, Dihan, Li, Feifei
core +3 more sources
A Pruning Algorithm for Reverse Nearest Neighbors in Directed Road Networks [PDF]
International Journal of Networked and Distributed Computing (IJNDC), 2015 In this paper, we studied the problem of continuous reverse k nearest neighbors (RkNN) in directed road network, where a road segment can have a particular orientation.
Rizwan Qamar +2 more
doaj +1 more source
Molecular Oncology, EarlyView.Pancreatic sensory neurons innervating healthy and PDAC tissue were retrogradely labeled and profiled by single‐cell RNA sequencing. Tumor‐associated innervation showed a dominant neurofilament‐positive subtype, altered mitochondrial gene signatures, and reduced non‐peptidergic neurons.
Elena Genova +14 more
wiley +1 more source