Results 41 to 50 of about 5,206,986 (370)

Design of a Universal Relation Database System.

open access: yes, 1982
: While the relational model removes some of the task of navigation in the database from the user, it still leaves navigational responsibility with the user when multirelational queries are involved.
J. Ullman
semanticscholar   +1 more source

Comprehensive database for facial expression analysis

open access: yesProceedings Fourth IEEE International Conference on Automatic Face and Gesture Recognition (Cat. No. PR00580), 2000
Within the past decade, significant effort has occurred in developing methods of facial expression analysis. Because most investigators have used relatively limited data sets, the generalizability of these various methods remains unknown. We describe the
T. Kanade, Ying-li Tian, J. Cohn
semanticscholar   +1 more source

Fitting the radial acceleration relation to individual SPARC galaxies [PDF]

open access: yesAstronomy & Astrophysics, 2018
Galaxies follow a tight radial acceleration relation (RAR): the acceleration observed at every radius correlates with that expected from the distribution of baryons.
Pengfei Li   +3 more
semanticscholar   +1 more source

A Fragile Zero Watermarking Scheme to Detect and Characterize Malicious Modifications in Database Relations

open access: yesThe Scientific World Journal, 2013
We put forward a fragile zero watermarking scheme to detect and characterize malicious modifications made to a database relation. Most of the existing watermarking schemes for relational databases introduce intentional errors or permanent distortions as ...
Aihab Khan, Syed Afaq Husain
doaj   +1 more source

The Fast Parsing and Generating Method of Airborne Navigation Database Based on Relation Model

open access: yesHangkong gongcheng jinzhan, 2019
Navigation database can be used for navigation calculation and automatic tuning management of navigation platform, etc. It is the necessary data sources for flight management system.
Li Li
doaj   +1 more source

One Law to Rule Them All: The Radial Acceleration Relation of Galaxies [PDF]

open access: yes, 2016
We study the link between baryons and dark matter (DM) in 240 galaxies with spatially resolved kinematic data. Our sample spans 9 dex in stellar mass and includes all morphological types.
F. Lelli   +3 more
semanticscholar   +1 more source

Large-Scale Biomedical Relation Extraction Across Diverse Relation Types: Model Development and Usability Study on COVID-19

open access: yesJournal of Medical Internet Research, 2023
BackgroundBiomedical relation extraction (RE) is of great importance for researchers to conduct systematic biomedical studies. It not only helps knowledge mining, such as knowledge graphs and novel knowledge discovery, but also ...
Zeyu Zhang   +11 more
doaj   +1 more source

A Comparison between Relational Databases and NoSQL Databases [PDF]

open access: yesInternational Journal of Trend in Scientific Research and Development, 2018
Databases are used for storing and managing large amounts of data. Relational model is useful when it comes to reliability but when it comes to the modern applications dealing with large amounts of data and the data is unstructured non relational models are usable. NoSQL databases are used to store large amounts of data.
openaire   +2 more sources

Global dynamics of SARS-CoV-2 clades and their relation to COVID-19 epidemiology

open access: yesScientific Reports, 2020
Expansion of COVID-19 worldwide increases interest in unraveling genomic variations of novel SARS-CoV-2 virus. Metadata of 408,493 SARS-CoV-2 genomes submitted to GISAID database were analyzed with respect to genomic clades and their geographic, age, and
S. Hamed   +3 more
semanticscholar   +1 more source

A New Optimized Model to Handle Temporal Data using Open Source Database

open access: yesAdvances in Electrical and Computer Engineering, 2017
The majority of the database applications now a days deal with temporal data. Temporal records are known to change during the course of time and facilities to manage the multiple snapshots of these records are generally missing in conventional ...
KUMAR, S., RISHI, R.
doaj   +1 more source

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