Results 141 to 150 of about 1,979,918 (343)
Derivation of constraints and database relations
, 1996 In this paper we investigate which constraints may be derived from a given set of constraints. We show that, given a set of relations R, all of which are invariant under some set of permutations P, it is possible to derive any other relation which is invariant under P, using only the projection, Cartesian product, and selection operators, together with
Cohen, D., Gyssens, Marc, Jeavons, P.
openaire +3 more sources
Molecular Oncology, EarlyView.This nationwide study evaluated KRAS and NRAS mutations in 10 754 Turkish patients with metastatic colorectal cancer. The results revealed a mutation frequency of 51.1%, with 46.6% having KRAS mutations, 4.5% having NRAS mutations, and 48.5% being wild‐type for both.
Gozde Kavgaci +6 more
wiley +1 more source
Relational Databases and Bell’s Theorem [PDF]
, 2013 Our aim in this paper is to point out a surprising formal connection, between two topics which seem on face value to have nothing to do with each other: relational database theory, and the study of non-locality and contextuality in the foundations of quantum mechanics.
openaire +3 more sources
Landscape of BRAF transcript variants in human cancer
Molecular Oncology, EarlyView.We investigate the annotation of BRAF variants, focusing on protein‐coding BRAF‐220 (formerly BRAF‐reference) and BRAF‐204 (BRAF‐X1). The IsoWorm pipeline allows us to quantify these variants in human cancer, starting from RNA‐sequencing data. BRAF‐204 is more abundant than BRAF‐220 and impacts patient survival.
Maurizio S. Podda +5 more
wiley +1 more source
Optimisation of in-situ dry density estimation
E3S Web of Conferences, 2016 Nowadays, field experiments are mostly used to determine the resistance and settlements of a soil before building. The needed devices were heavy so they cannot be used in every situation.
Morvan Mathilde, Breul Pierre
doaj +1 more source
Symmetry Relation Database and Its Application to Ferroelectric Materials Discovery
, 2022 Qiang Zhu +2 more
openalex +2 more sources
Molecular Oncology, EarlyView.The COMBAT classification system, developed through multi‐omics integration, stratifies adult patients with B‐cell acute lymphoblastic leukemia(B‐ALL) into three molecular subtypes with distinct surface antigen patterns, immune landscape, methylation patterns, biological pathways and prognosis.
Yang Song +11 more
wiley +1 more source
Nested relation based database knowledge representation [PDF]
, 1991 Qiming Chen, Yahiko Kambayashi
openalex +2 more sources
Quaestiones Geographicae, 2018 The main aim of the study was to introduce a spatial database application for the estimation of changes in shoreline position. The open-source PostgreSQL database system with the PostGIS spatial extension was used as the data store for digitalised ...
Kostecki Robert
doaj +1 more source
A new Watermarking Technique for Secure Database [PDF]
International Journal of Computer Engineering & Applications, Vol.
I, No. I, 2013, 2013 Digital multimedia watermarking technology was suggested in the last decade to embed copyright information in digital objects such images, audio and video. However, the increasing use of relational database systems in many real-life applications created an ever increasing need for watermarking database systems.
arxiv