Results 61 to 70 of about 3,193,900 (299)

Efficient processing of reverse nearest neighborhood queries in spatial databases

, 2020
This paper presents a novel query for spatial databases, called reverse nearest neighborhood (RNH) query, to discover the neighborhoods that find a query facility as their nearest facility among other facilities in the dataset.
Islam, Md Saiful, Wang, Can, Shen, Bojie, Taniar, David, Wang, Junhu   +4 more
core   +1 more source

Converting relational databases into object relational databases [PDF]

, 2010
This paper proposes an approach for migrating existing Relational DataBases (RDBs) into Object-Relational DataBases (ORDBs). The approach is superior to existing proposals as it can generate not only the target schema but also the data instances.
Ali, Akhtar, M. Akhtar Ali, Rossiter, Nick, Nick Rossiter, Abdelsalam Maatuk, Maatuk, Abdelsalam   +5 more
core   +2 more sources

Differential expression of cancer‐related genes supports prediction of poor response to first‐line treatments in T‐ALL pediatric patients with high minimal residual disease

Molecular Oncology, EarlyView.
In the present work, we have identified a transcriptional signature based on the differential expression of six genes (BCL2&MAST4, HSH2D&LAT2, METRN&PITPNM2) that would facilitate the early detection of T‐cell acute lymphoblastic leukemia (T‐ALL) patients prone to a poor treatment response and could be implemented at diagnosis, along with other risk ...
Antonio Lahera, Laura Vela‐Martín, Pablo Fernández‐Navarro, José Luis López‐Lorenzo, Javier Cornago, Pilar Llamas, Eduardo Pérez‐Gómez, José Luis Marín‐Rubio, Manuel Fresno, Javier Santos, José Fernández‐Piqueras, María Villa‐Morales   +11 more
wiley   +1 more source

Optimal Matching between Spatial Datasets under Capacity Constraints [PDF]

, 2010
Consider a set of customers (e.g., WiFi receivers) and a set of service providers (e.g., wireless access points), where each provider has a capacity and the quality of service offered to its customers is anti-proportional to their distance.
LEONG, Hou U, Leong, HU, YIU, Man Lung, Yiu, ML, Mamoulis, N, U, LH, MOURATIDIS, Kyriakos, MAMOULIS, Nikos, Mouratidis, K   +8 more
core   +1 more source

Efficient k-NN Trajectory Queries on Mobility Databases

ISPRS International Journal of Geo-Information
The rapid adoption of GPS-enabled mobile devices has produced massive trajectory datasets that drive modern applications in traffic prediction, logistics, and spatio-temporal analytics.
Linghui Lou, Dong June Lew, Kwang Woo Nam   +2 more
doaj   +1 more source

A novel quinazolinone insulin receptor inhibitor and its synergy with an EGFR inhibitor in glucose‐driven glioblastoma

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, Wioleta Cieślik, Wojciech Płaziński, Katarzyna Stępnik, Anna Boguszewska‐Czubara, Elżbieta Kot, Robert Musioł, Mateusz Jasica, Anna Mrozek‐Wilczkiewicz, Katarzyna Malarz   +9 more
wiley   +1 more source

An extensible index for spatial databases [PDF]

Proceedings Thirteenth International Conference on Scientific and Statistical Database Management. SSDBM 2001, 2002
Emerging database applications require the use of new indexing structures beyond B-trees and R-trees. Examples are the k-D tree, the trie, the quadtree, and their variants. They are often proposed as supporting structures in data mining, GIS, and CAD/CAM applications.
Walid G. Aref, Ihab F. Ilyas
openaire   +1 more source

Spatial and single‐nuclei transcriptomics reveals idiosyncratic and generic patterns in papillary and anaplastic thyroid cancers

Molecular Oncology, EarlyView.
Matched spatial transcriptomics and single‐nuclei RNA‐seq were generated for anaplastic and BRAFV600E papillary thyroid cancers revealing generic and tumor‐specific states occurring in cancer cells and in the tumor microenvironment. In this context, cancer dedifferentiation mirrored organoid maturation through ordered thyroid marker gain/loss ...
Adrien Tourneur, Joel Rodrigues Vitória, Manuel Saiselet, Ligia Craciun, Denis Larsimont, Anne Lefort, Frédérick Libert, Carine Maenhaut, Sabine Costagliola, Maxime Tarabichi, Mirian Romitti, Vincent Detours   +11 more
wiley   +1 more source

Selectivity Estimation of Complex Spatial Queries [PDF]

, 2001
Several studies have focused on the efficient processing of simple spatial query types such as selections and spatial joins. Little work, however, has been done towards the optimization of queries that process several spatial inputs and combine them ...
Papadias, D, Nikos Mamoulis, Mamoulis, Nikos, Mamoulis, N. (Nikos), Mamoulis, N, Dimitris Papadias, Papadias, D.   +6 more
core   +2 more sources

Efficient Computation of the K Nearest Neighbors Query Using Incremental Radius on a k²-tree

IEEE Access
Proximity searches within metric spaces are critical for numerous real world applications, including pattern recognition, multimedia information retrieval, and spatial data analysis, among others.
Rodrigo Torres-Aviles, Monica Caniupan
doaj   +1 more source