Results 51 to 60 of about 633,701 (344)

Chaotic and Quasi-periodic Regimes in the Covid-19 Mortality Data

open access: yesChaos Theory and Applications
It has been reported by World Health Organization (WHO) that the Covid-19 epidemic due to the Sar Cov-2 virus, which started in China and affected the whole world, caused the death of approximately six million people over three years.
Ekrem Aydıner, Erkan Yılmaz
doaj   +1 more source

Bioprinting Organs—Science or Fiction?—A Review From Students to Students

open access: yesAdvanced Healthcare Materials, EarlyView.
Bioprinting artificial organs has the potential to revolutionize the medical field. This is a comprehensive review of the bioprinting workflow delving into the latest advancements in bioinks, materials and bioprinting techniques, exploring the critical stages of tissue maturation and functionality.
Nicoletta Murenu   +18 more
wiley   +1 more source

A New Chaotic Image Encryption Algorithm Based on Transversals in a Latin Square

open access: yesEntropy, 2022
In this paper, a new combinatorial structure is introduced for image encryption, which has an excellent encryption effect on security and efficiency. An n-transversal in a Latin square has the function of classifying all the matrix’s positions, and it ...
Honglian Shen   +3 more
doaj   +1 more source

Synchronization of chaotic oscillator time scales

open access: yes, 2005
This paper deals with the chaotic oscillator synchronization. A new approach to detect the synchronized behaviour of chaotic oscillators has been proposed.
A. A. Koronovskii   +38 more
core   +1 more source

Granular Hydrogels as Modular Biomaterials: From Structural Design to Biological Responses

open access: yesAdvanced Healthcare Materials, EarlyView.
Granular hydrogels are now emerging as promising biomaterials due to their inherent microporousity, injectability, and modularity. They have shown improvements in cell viability and migration, cellular/tissue infiltration, host tissue integration, mitigated foreign body response, and tissue regeneration.
Asmasadat Vaziri   +6 more
wiley   +1 more source

High-Speed Optical Chaotic Data Selection Logic Operations with the Performance of Error Detection and Correction

open access: yesPhotonics
Based on the chaotic polarization system of optically injected cascaded vertical-cavity surface-emitting lasers (VCSELs), we propose a novel implementation scheme for high-speed optical chaotic data selection logic operations.
Geliang Xu   +3 more
doaj   +1 more source

Electronically Tunable 3D Autonomous Chaotic Oscillator Employing Single CCCFA and Its Extension to 4D

open access: yesIEEE Access, 2022
This work presents the realization of a novel electronically tuneable third-order autonomous chaotic oscillator using a current-controlled current conveyor feedback amplifier (CCCFA).
Garima Shukla, Sajal K. Paul
doaj   +1 more source

Synchronization of fractional order chaotic systems

open access: yes, 2004
The chaotic dynamics of fractional order systems begin to attract much attentions in recent years. In this brief report, we study the master-slave synchronization of fractional order chaotic systems.
A. Charef   +20 more
core   +1 more source

A Quantitative Printability Framework for Programmable Assembly of Pre‐Vascular Patterns via Laser‐Induced Forward Transfer

open access: yesAdvanced Healthcare Materials, EarlyView.
Laser‐Induced Forward Transfer (LIFT) is presented as a powerful micropatterning tool. An objective printability framework is developed to assess optimal printing parameter combinations. The technology is further explored for its ability to deterministically deposit microdroplets at predefined locations following CAD designs, enabling the patterning of
Cécile Bosmans   +8 more
wiley   +1 more source

Energy distribution and chaotic pressure pulsation analysis of vortex ropes in Francis-99

open access: yesEngineering Applications of Computational Fluid Mechanics
Francis turbines, essential for stability in diverse operating conditions and variable-speed scenarios, encounter efficiency-compromising vortex rope formations in the draft tube, leading to substantial pressure fluctuations.
Puxi Li   +5 more
doaj   +1 more source

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