Results 71 to 80 of about 437,980 (285)

Dynamic tile-map generation for crack-free rendering of large-scale terrain data

open access: yesETRI Journal
Three-dimensional (3D) geospatial technologies are essential in urban digitaltwins, smart cities, and metaverse. Rendering large-scale terrain data, oftenexceeding tens of terabytes, presents challenges.
Cheonin Oh, Ahyun Lee
doaj   +1 more source

Spatial Information-Aware Flight Safety Forecasting Model for Unmanned Aerial Vehicles Based on Deep Learning and Grey Analysis

open access: yesIEEE Access
Ensuring flight safety for unmanned aerial vehicles (UAVs) is a critical concern, necessitating effective mathematical modeling for safety forecasting in both academic and industrial contexts.
Mingbo Pan   +6 more
doaj   +1 more source

Clustering and classifying images with local and global variability [PDF]

open access: yes, 2009
A procedure for clustering and classifying images determined by three classification variables is presented. A measure of global variability based on the singular value decomposition of the image matrices, and two average measures of local variability
Giuliodori, Andrea   +2 more
core   +1 more source

Tumor‐stromal crosstalk and macrophage enrichment are associated with chemotherapy response in bladder cancer

open access: yesFEBS Open Bio, EarlyView.
Chemoresistance in bladder cancer: Macrophage recruitment associated with CXCL1, CXCL5 and CXCL8 expression is characteristic of Gemcitabine/Cisplatin (Gem/Cis) Non‐Responder tumors (right side) while Responder tumors did not show substantial tumor‐stromal crosstalk (left side). All biological icons are attributed to Bioicons: carcinoma, cancerous‐cell‐
Sophie Leypold   +11 more
wiley   +1 more source

Gridvoronoi: An Efficient Spatial Index for Nearest Neighbor Query Processing

open access: yesIEEE Access, 2019
In this paper, based upon Voronoi Diagram, we propose GridVoronoi which is a novel spatial index that enables users to find the spatial nearest neighbour (NN) from two-dimensional (2D) datasets in almost O(1) time.
Chongsheng Zhang   +3 more
doaj   +1 more source

Spatial databases for decision support in agriculture [PDF]

open access: yes, 2008
The Portuguese agriculture has experienced phases of change and its adaptation to the Common Agriculture Policy. Although serious problems have subsisted as structural difficulties in spite of the many public aids, it seems that, slowly, agricultural ...
Noronha, Teresa de, Vaz, Eric
core  

Multi‐omics and low‐input proteomics profiling reveals dynamic regulation driving pluripotency initiation in early mouse embryos

open access: yesFEBS Open Bio, EarlyView.
Mouse pre‐implantation development involves a transition from totipotency to pluripotency. Integrating transcriptomics, epigenetic profiling, low‐input proteomics and functional assays, we show that eight‐cell embryos retain residual totipotency features, whereas cytoskeletal remodeling regulated by the ubiquitin‐proteasome system drives progression ...
Wanqiong Li   +8 more
wiley   +1 more source

An Efficient Shortest Path Routing Algorithm for Directed Indoor Environments

open access: yesISPRS International Journal of Geo-Information, 2018
Routing systems for outdoor space have become the focus of many research works. Such routing systems are based on spatial road networks where moving objects (such as cars) are affected by the directed roads and the movement of traffic, which may include ...
Sultan Alamri
doaj   +1 more source

Efficient Spatial Keyword Search in Trajectory Databases

open access: yes, 2012
An increasing amount of trajectory data is being annotated with text descriptions to better capture the semantics associated with locations. The fusion of spatial locations and text descriptions in trajectories engenders a new type of top-$k$ queries ...
Cong, Gao   +4 more
core  

Chameleon sequences reveal structural effects in proteins representing micelle‐like distribution of hydrophobicity

open access: yesFEBS Open Bio, EarlyView.
Amino acids sequence of two different proteins with the same sequence (chameleon sequence—black boxes) represent in 3D structure of the proteins different secondary structures: HHHH—helical and BBB—Beta‐structural. The chains folded in water environment adopt different III‐order structures in which the chameleon fragments appear to adopt similar status
Irena Roterman   +4 more
wiley   +1 more source

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