Results 21 to 30 of about 1,731,534 (320)

Measuring accessibility: A Big Data perspective on Uber service waiting times [PDF]

open access: yesRAE: Revista de Administração de Empresas, 2019
This study aims to relate information about the waiting times of ride-sourcing services, with specific reference to Uber, using socioeconomic variables from São Paulo, Brazil.
André Insardi, Rodolfo Oliveira Lorenzo
doaj   +3 more sources

Type Ia Supernovae Rates and Galaxy Clustering from the CFHT Supernova Legacy Survey [PDF]

open access: yes, 2008
The Canada-France-Hawaii Telescope Supernova Legacy Survey (SNLS) has created a large homogeneous database of intermediate redshift (0.2 < z < 1.0) type Ia supernovae (SNe Ia).
A. Conley   +37 more
core   +4 more sources

Relational database and graph database: A comparative analysis [PDF]

open access: yesJournal of Process Management. New Technologies, 2017
Since 1970, relational database models have been in use for storing, manipulating and retrieving data. The importance of relational databases is going to decrease due to the exponential growth of data as it is difficult to work with large number of joining tables.
Surajit Medhi, Hemanta K. Baruah
openaire   +3 more sources

Recommendations for Evolving Relational Databases [PDF]

open access: yes, 2020
Relational databases play a central role in many information systems. Their schemas contain structural and behavioral entity descriptions. Databases must continuously be adapted to new requirements of a world in constant change while: (1) relational database management systems (RDBMS) do not allow inconsistencies in the schema; (2) stored procedure ...
Delplanque, Julien   +3 more
openaire   +3 more sources

WATERMARKING SCHEME BASED ON MOST SIGNIFICANT BIT FOR PUBLIC COPYRIGHT PROTECTION FOR RELATIONAL DATABASES

open access: yesTạp chí Khoa học
The paper presents a watermarked scheme based on the most significant bit for public copyright protection for relational databases. A Watermark scheme could openly prove data copyright as often as desired.
Luu Thi Bich Huong
doaj   +1 more source

A micro-parametric survey on typological covariation related to focus marking strategies, based on the Bantu Morphosyntactic Variation database

open access: yesLinguistique et Langues Africaines, 2023
This paper discusses typological tendencies of focus marking strategies from a cross-Bantu perspective based on the Bantu Morphosyntactic Variation (BMV) database, a large-scale database of morphosyntactic variation of Bantu languages built around 142 ...
Daisuke Shinagawa, Lutz Marten
doaj   +1 more source

Marketing Impact on Diffusion in Social Networks

open access: yes, 2016
The paper proposes a way to add marketing into the standard threshold model of social networks. Within this framework, the paper studies logical properties of the influence relation between sets of agents in social networks.
Naumov, Pavel, Tao, Jia
core   +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

AKAP12 Expression in HER2-positive Breast Cancer and Its Clinical Significance

open access: yesZhongliu Fangzhi Yanjiu, 2020
Objective To investigate the expression of AKAP12 in HER2-positive breast cancer and its relation with clinicopathological factors and clinical significance.
CHENG Qian   +5 more
doaj   +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

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