Results 61 to 70 of about 20,029 (299)
Distributed Approaches to Spatial Pivot Indexing
, 2016 Spatial indexing is critical for retrieving data efficiently from geospatial databases, and has been a long-standing research direction of GIS. In a departure from recent spatial indexing paradigms, this study leverages pivot indexing.
Tyler, Kevin
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HPG-Tree: An Enhanced
IEEE AccessIn modern applications such as geographic information systems, game development, and image processing, the demand for efficient two-dimensional spatial indexing is rising exponentially. Traditional approaches like R-tree can suffer from excessive overlap
Amal Saif +3 more
doaj +1 more source
Towards a Painless Index for Spatial Objects [PDF]
ACM Transactions on Database Systems, 2014 Conventional spatial indexes, represented by the R-tree, employ multidimensional tree structures that are complicated and require enormous efforts to implement in a full-fledged database management system (DBMS). An alternative approach for supporting spatial queries is mapping-based indexing, which maps both data and queries into a one ...
Rui Zhang 0003 +3 more
openaire +1 more source
Molecular Oncology, EarlyView.The novel styrylquinazolinone‐based molecule W1B effectively suppresses glioblastoma by inhibiting IGF1R and EGFR. In high‐glucose microenvironments driving tumor resistance, W1B acts synergistically with the EGFR inhibitor dacomitinib. This combination safely blocks compensatory survival signaling in zebrafish xenograft models. Showcasing promising in
Patryk Rurka +9 more
wiley +1 more source
, 2021 This paper covers the overview of Spatial Database System which offers Spatial Data Structure along with the Spatial Datatypes. It is most commonly used in Geographic Information Systems (GIS) and other applications.
DR. P. G. KHOT, SANJAY SRIVAS
core
Image indexing and similarity retrieval based on spatial relation model [PDF]
, 2010 The spatial relation model is an important technique for image indexing and retrieval in image or multimedia databases. 2D strings and its variants are proposed to support the representation of spatial relationships.
Wang, Ying-hong, 王英宏
core +1 more source
RL-RTree: A Reinforcement Learning-Optimized Dynamic R-Tree for High-Dimensional Spatial Indexing
IEEE AccessSpatial indexing in high-dimensional dynamic environments faces critical challenges, including the curse of dimensionality and rapid distribution shifts, which degrade the performance of traditional indexes like R*-trees and static learned indexes.
Yongxin Peng
doaj +1 more source
Molecular Oncology, EarlyView.Single‐cell multi‐omics reveals epigenetic heterogeneity across therapy‐adaptive tumor states, including quiescent/dormant, drug‐tolerant persister, and EMT‐like phenotypes. By linking regulatory features with state‐associated biomarkers, these approaches inform biomarker‐guided therapeutic strategies for evolving tumors.
Hee Jung Kim +3 more
wiley +1 more source
Applied SciencesMultiscale 3D geological characterization and joint analysis are increasingly important topics in spatial information science. However, the non-uniform spatial distribution of objects and scale heterogeneity in geological surveys lead to dispersed ...
Genshen Chen +6 more
doaj +1 more source
FEBS Open Bio, EarlyView.Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley +1 more source