Results 51 to 60 of about 22,732 (218)

Hardware Design for Secure Telemedicine Using A Novel Framework, A New 4D Memristive Chaotic Oscillator, and Dispatched Gray Code Scrambler

Engineering Reports, Volume 7, Issue 10, October 2025.
This work presents a secure telemedicine cryptosystem based on a novel 4D memristive chaotic oscillator and a Dispatched Gray Code Scrambler (DGCS). Implemented on FPGA, the system ensures power‐efficient encryption, making it suitable for real‐time medical image transmission in IoT healthcare environments.
Fritz Nguemo Kemdoum, Serge Raoul Dzonde Naoussi, Gideon Pagnol Ayemtsa Kuete, Justin Roger Mboupda Pone   +3 more
wiley   +1 more source

On the Embedded of a Fast, Light and Robust Chaos‐Based Cryptosystem in NEXYS4 FPGA Card for Real Time Color Image Security (CBC in N‐FPGA‐RTCIP)

Engineering Reports, Volume 7, Issue 9, September 2025.
Security evaluation, NPCR + UACI results of 99.5978% and 33.4549% respectively, confirm the system is secure against statistical and differential attacks. Besides, the FPGA implementation achieves low power of 115 mW at a speed of 42.56 MHz. This makes it suitable for IoT applications where power and hardware resources are constrained. ABSTRACT In this
Fritz Nguemo Kemdoum, Gideon Pagnol Ayemtsa Kuete, Serge Raoul Dzonde Naoussi, Justin Roger Mboupda Pone, Wulfran Fendzi Mbasso   +4 more
wiley   +1 more source

Digital Predistorter Implementation for Wideband Power Amplifiers in New Generation Wireless Systems Based on a Low‐Complexity Volterra Series Model

International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, Volume 38, Issue 5, September/October 2025.
ABSTRACT In this article, we provide a novel, expanded, and adapted pruning approach for the Simplified Volterra Series (SVS) model that makes it applicable to a wider range of Power Amplifiers (PAs). The proposed Modified SVS (MSVS) model is then applied in a Digital Predistortion (DPD) architecture to linearize a 25 W Gallium Nitride (GaN) RF PA.
Haithem Rezgui, Ghalid Abib, Fatma Rouissi, Adel Ghazel   +3 more
wiley   +1 more source

Cadê o Kauê? Co‐design and acceptability testing of a chat‐story aimed at enhancing youth participation in the promotion of mental health in Brazil

Journal of Child Psychology and Psychiatry, Volume 66, Issue 5, Page 697-715, May 2025.
Background Adolescent mental health is vital for public health, yet many interventions fail to recognise adolescents as proactive community contributors. This paper discusses the co‐design and acceptability testing of a chat‐story intervention to enhance Brazilian adolescents' participation in the promotion of mental health in their peer communities ...
Gabriela Pavarini, Sheila Giardini Murta, Josimar Antônio de Alcântara Mendes, Felipe Rodrigues Siston, Rafa Ribeiro Alves de Souza, Rafaela de Oliveira da Cunha, Julyana Alves Ferreira, Victor Hugo de Lima de Santos, Brenda Thallys Rocha Seabra, Talk2U, Nicolás Ferrario, Lu Suarez Battan, Bia Matera, Iasmin Coni, Lucca Rosa Pereira, Thayna Iglesias, Ana Luiza Savi, Daniel Foscarini, Kathia Calil, Felipe Corvello, Sômolo Silvestre Salvador, Amparo Guindón, Silvia Lordello, Larissa Polejack, Alice Christovam Constantino, Alicia Mendes, Ana Clara Freitas Ferreira, Ana Vitória Oliveira da Silva, Brenda lorrane Ferreira Feitosa, Alves, Emerson Gomes dos Santos, Hevellyn Sofia Elvino Pinheiro, Iasmyn Brito dos Santos, Isis Santos Goulart, Jamili Maine Lima Campos, Maria Layza Paixão, Milena Sousa, Mutula Manuel Simão João, Natália Samuel Pitcella Borba, Raissa Barbosa da Silva, Raissa Amarante, Yasmin Bilek, Yasmin Flores da Silva, Gabriela Staerke de Rezende, Jonas de Oliveira Bertucci, Claudia Cavalcante de Carvalho Weber, Janete Araújo da Silva, Rodrigo Araújo Magalhães, Rosimeire Aguiar Pereira Lopes, Mikael Silva Rocha, Ana Paula Santiago S. Andrade, Fernanda Bernardes Silveira Costa, Maria Salete Guerra Maranhão Bezerra, Ilina Singh, Gina Vieira Ponte, Thiago Freire, Tony Marcelo Gomes de Oliveira   +56 more
wiley   +1 more source

Large scale system design aided by modelling and DES simulation: A Petri net approach

Software: Practice and Experience, Volume 55, Issue 2, Page 243-271, February 2025.
Abstract The study of real discrete event systems requires the use of models to cope with complexity and large scale. The only way to understand and analyse their behaviour prior to implementation is, in practice, through distributed simulation. Although it is a widely studied discipline, the difficulty of developing efficient distributed simulation ...
Unai Arronategui, José Ángel Bañares, José Manuel Colom   +2 more
wiley   +1 more source

EthVault: A Secure and Resource‐Conscious FPGA‐Based Ethereum Cold Wallet

IET Blockchain, Volume 5, Issue 1, January/December 2025.
This work presents EthVault, the first hardware‐based Ethereum hierarchical deterministic cold wallet, featuring FPGA implementations of key cryptographic algorithms for secure key generation. A novel ECC architecture resilient to side‐channel and timing attacks, along with an efficient child key derivation function, are introduced. Implementation on a
Joel Poncha Lemayian, Ghyslain Gagnon, Kaiwen Zhang, Pascal Giard   +3 more
wiley   +1 more source

Novel Area Optimization in FPGA Implementation Using Efficient VHDL Code

Jurnal Rekayasa Elektrika, 2015
A new novel method for area efficiency in FPGA implementation is presented. The method is realized through flexibility and wide capability of VHDL coding. This method exposes the arithmetic operations such as addition, subtraction and others.
Zulfikar .
doaj   +3 more sources

Independent Task Scheduling in Multi‐Core Systems: A Hardware‐Based Approach for Optimising Energy and Thermal Efficiency

IET Cyber-Physical Systems: Theory &Applications, Volume 10, Issue 1, January/December 2025.
This paper introduces an online distributed hardware scheduler that outperforms similar schedulers in terms of performance, predictability, power and energy consumption and temperature management. Implementing the scheduler in hardware results in fewer clock cycles, lower latency and greater efficiency compared to software implementations.
Mohammadreza Saberikia, Hakem Beitollahi, Hamed Farbeh   +2 more
wiley   +1 more source

Implementation of Dormand-Prince based chaotic oscillator designs in different IQ-Math number standards on FPGA

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2019
Chaos and chaotic systems, one of the most important work areas inrecent years, are used in areas such as cryptology and secure communication,industrial control, artificial neural networks, random number generators andimage processing.
İsmail Koyuncu, Halil İbrahim Şeker
doaj   +1 more source

Constrained FCS‐MPC‐Based Current Controller for Voltage Source Converters: Application to Shunt Active Power Filters

IET Electric Power Applications, Volume 19, Issue 1, January/December 2025.
In this paper, a constrained FCS‐MPC based current controller is introduced for controlling shunt active power filters. In the proposed current controller, the objective function is same as used in the conventional FCS‐MPC and a switching frequency constraint is considered to reduce the average switching frequency. The results obtained from FPGA in the
Shahram Karimi, Hesam Seifinejad, Hassan Moradi, Hossein Bagheri, Siroos Hemmati   +4 more
wiley   +1 more source