Results 21 to 30 of about 7,184,030 (395)

Effectiveness of COVID-19 vaccines against Omicron and Delta hospitalisation, a test negative case-control study

open access: yesNature Communications, 2022
SARS-CoV-2 variants of concern have been associated with reduced vaccine effectiveness, even after a booster dose. In this study, authors aim to estimate vaccine effectiveness against hospitalisation with the Omicron and Delta variants, using different ...
Julia Stowe   +4 more
doaj   +1 more source

The impact of foreign markets globalization on the price and functionality of electronic access control systems [PDF]

open access: yesSHS Web of Conferences, 2021
Research background: The research, which is the subject of the paper, is based on the global expansion of the use of electronic access control systems using biometric data for user verification.
Boroš Martin, Lenko Filip, Velas Andrej
doaj   +1 more source

Secure the Clones [PDF]

open access: yesLogical Methods in Computer Science, 2012
Exchanging mutable data objects with untrusted code is a delicate matter because of the risk of creating a data space that is accessible by an attacker. Consequently, secure programming guidelines for Java stress the importance of using defensive copying before accepting or handing out references to an internal mutable object.
Jensen, Thomas   +2 more
openaire   +6 more sources

Attention-based message passing and dynamic graph convolution for spatiotemporal data imputation

open access: yesScientific Reports, 2023
Although numerous spatiotemporal approaches have been presented to address the problem of missing spatiotemporal data, there are still limitations in concurrently capturing the underlying spatiotemporal dependence of spatiotemporal graph data ...
Yifan Wang   +6 more
doaj   +1 more source

Security-Informed Safety: Supporting Stakeholders with Codes of Practice [PDF]

open access: yes, 2018
Codes of practice provide principles and guidance on how organizations can incorporate security considerations into their safety engineering lifecycle and become more security ...
Bishop, P. G.   +3 more
core   +1 more source

Security in online learning assessment towards an effective trustworthiness approach to support e-learning teams [PDF]

open access: yes, 2014
(c) 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or ...
Caballé Llobet, Santiago   +3 more
core   +1 more source

Social Security Programs Throughout the World: The Americas, 2011 [PDF]

open access: yes, 2012
[Excerpt] This fourth issue in the current four-volume series of Social Security Programs Throughout the World reports on the countries of the Americas.
International Social Security Association   +1 more
core   +4 more sources

Detecting Unauthorized Movement of Radioactive Material Packages in Transport with an Adam-Optimized BP Neural Network Model

open access: yesScience and Technology of Nuclear Installations, 2023
The rapid expansion of nuclear technology across various sectors due to global economic growth has led to a substantial rise in the transportation of radioactive materials.
Panpan Jiang   +7 more
doaj   +1 more source

Modified Total Evaporation Method for Highly Precise Measurement of Uranium Isotopes Ratio [PDF]

open access: yesZhipu Xuebao, 2023
Thermal ionization mass spectrometry (TIMS) is a well-established instrumental technique for accurately analyzing isotopes of elements with low first ionization potential.
ZHANG Ji-long1   +8 more
doaj   +1 more source

Evaluation of Airport Security Training Programs: Perspectives and Issues [PDF]

open access: yes, 2013
While many governments and airport operators have emphasized the importance of security training and committed a large amount of budget to security training programs, the implementation of security training programs was not proactive but reactive ...
De Gramatica, Martina   +4 more
core   +1 more source

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