Results 21 to 30 of about 3,070,873 (266)

Novel fingerprint key generation method based on the trimmed mean of feature distance

open access: yes网络与信息安全学报, 2023
In recent years, biometrics has become widely adopted in access control systems, effectively resolving the challenges associated with password management in identity authentication.However, traditional biometric-based authentication methods often lead to
Zhongtian JIA   +3 more
doaj   +3 more sources

Security and Efficiency Enhanced Revocable Access Control for Fog-Based Smart Grid System

open access: yesIEEE Access, 2019
With the popularity of smart grids, plentiful of smart devices have been put into use, such as smart meters and power assets. Due to limited computation capabilities and storage spaces of these devices, the collected data need to be “outsourced ...
Mi Wen   +4 more
doaj   +1 more source

Analiza percepției cu privire la planurile tranzitorii la tinerii din centrele de plasament și rezidențiale la nivel național [PDF]

open access: yesDrepturile Omului, 2021
This paper is based on a research on transitional mechanisms/plans in which young people under the special protection measure in placement and residential centres at national level participated.
Vișinel Costel Bălan
doaj  

Directed proxy signature with fast revocation proven secure in the standard model

open access: yesIET Information Security, 2017
As a kind of special proxy signature, directed proxy signature can be used to sign messages, such that only the designated verifier can easily verify the validity of the signature while others cannot. At the same time, if necessary, the proxy signer or designated verifier can prove the validity of the signature to any third party.
Liaojun Pang   +4 more
openaire   +2 more sources

Revocation

open access: yes, 2017
The standard operation of contraction (÷ ) is assumed to satisfy the inclusion postulate (K÷ p⊆ K ), according to which nothing new is added to the belief set (K) when a sentence (p) is contracted.
Sven Ove Hansson, Hansson, Sven Ove,
core   +1 more source

Diversity‐Oriented Two‐Step Annulative π‐Extension Enables Access to Structurally Complex Nanographenes

open access: yesAngewandte Chemie, EarlyView.
Pd‐catalyzed C–H arylation of polycyclic aromatic hydrocarbons (PAHs) with various aryltrimethylsilanes enables the preparation of structurally complicated arylated PAHs, which can be further transformed to nanographenes in a manner of two‐step annulative π‐extension (APEX) reaction.
Honami Katsuragawa   +5 more
wiley   +2 more sources

Redox‐Neutral Vicinal Dialkylation of Aryl Boronic Esters via the Palladium/Norbornene Cooperative Catalysis

open access: yesAngewandte Chemie, EarlyView.
A new mode of the palladium/norbornene (Pd/NBE) cooperative catalysis, that is, redox‐neutral difunctionalization of aryl boronic esters with two electrophiles, has been developed, which can be used to streamline the preparation of a functionalized benzoazepane.
Rong Ye   +4 more
wiley   +2 more sources

Selenophene π‐Core Fusion for Simultaneous Fast Reverse Intersystem Crossing and Narrowband Long‐Wavelength TADF

open access: yesAngewandte Chemie, EarlyView.
Dibenzo[b,d]selenophene (DBSe) π‐core fusion enables rapid triplet–singlet interconversion while preserving the narrowband emission features of multi‐resonance thermally activated delayed fluorescence (MR‐TADF) luminogens. Combined with peripheral donor engineering, this strategy enables systematic emission tuning from green to red, leading to highly ...
Jingpeng Zhang   +4 more
wiley   +2 more sources

Reusable attribute-based signature with attribute revocation and authenticated key agreement

open access: yes网络与信息安全学报
In the pursuit of establishing a unified model for fine-grained access control and secure data communication within a distributed microservices architecture, a verifier-policy attributed-based signature (VP-ABS) scheme, augmented with attribute ...
Zhishuo ZHANG, Huixi YANG, Wen HUANG, Yongjian LIAO, Shijie ZHOU
doaj   +3 more sources

Cobalt‐Catalyzed C─N Bond Formation via Metal‐Hydride Hydrogen Atom Transfer (MHAT)

open access: yesAngewandte Chemie, EarlyView.
Cobalt‐catalyzed metal‐hydride hydrogen atom transfer (Co‐MHAT) converts simple alkenes into C─N bonds under mild, near‐neutral conditions. A shared Co─H‐initiated radical/organocobalt intermediate is channeled into radical trapping, radical‐polar crossover, or radical ligand transfer, unifying hydroamination, hydroazidation, hydroamidation, and remote
Arman Khosravi, Ming‐Yu Ngai
wiley   +2 more sources

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