Results 21 to 30 of about 6,396,998 (143)

A New Scheme for Spreading & De-spreading in the Direct Sequence Spread Spectrum Mechanism [PDF]

, 2022
Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping Spread Spectrum (FHSS) techniques are widely used to implement code-division multiple access (CDMA) in wireless communication systems.
ElSharkawy, Magdy Ibrahim
core   +1 more source

Metalorganic Titanium Treatment to Change Enamel Optical Properties

Journal of Biomedical Materials Research Part B: Applied Biomaterials, Volume 114, Issue 9, September 2026.
ABSTRACT Observational studies have shown that human teeth with higher concentrations of titanium traces have better optical properties. The aim of this study was to investigate how titanium ion infiltration into tooth enamel affects its optical properties by studying the diffusion and reactivity of titanium compounds in tooth enamel and how this ...
Yara Oweis, Amir Elhadad, Sophia Smith, Qiman Gao, Emily Buck, Mohamed‐Amine Mezour, Wenge Jiang, Javier Vargas Balbuena, Sailer S. Dos Santos, Marta Cerruti, Faleh Tamimi   +10 more
wiley   +1 more source

Artificial Intelligence, Optimization, and Modeling Techniques in Water Resources Management: Challenges and Future Directions

Water Environment Research, Volume 98, Issue 6, June 2026.
This study presents an integrated framework linking six foundational elements of water resources management: watershed modeling, surrogate modeling, optimization, artificial intelligence, decision support systems, and monitoring. The synthesis highlights how connecting these traditionally separate domains fosters smarter, adaptive, and data‐driven ...
Hoda S. Razavi, A. Pouyan Nejadhashemi, Kalyanmoy Deb, Gregorio Toscano, Timothy Harrigan, Lewis Linker   +5 more
wiley   +1 more source

A Systematic Review on Applications of Artificial Intelligence for Obesity Prevention

Obesity Reviews, Volume 27, Issue 5, May 2026.
ABSTRACT This systematic review examines the applications of artificial intelligence (AI) in preventing obesity, addressing a critical public health issue that affects a substantial portion of the population. With obesity rates rising alarmingly, particularly in the United States, this review synthesizes findings from 46 studies published between 2008 ...
Atefehsadat Haghighathoseini, Shuo‐yu Lin, Ge Song, Ruopeng An, Hong Xue   +4 more
wiley   +1 more source

A New Approach to Spread-spectrum OFDM

, 2018
Orthogonal frequency division multiplexing (OFDM) systems are reviewed and the Shannon bound is dis- cussed as a criterion of efficient spectrum use and a design criterion. The problem of efficient sharing of spectrum by wireless communication systems is
Shahab Abdulla, Ronald G. Addie, Mohammad Kaisb Layous Alhasnawi, Abdulla, Shahab, Alhasnawi, Mohammad Kaisb Layous, Addie, Ronald G.   +5 more
core   +1 more source

Duplex Stainless Steel Laser‐Surface Textured: Stability in Brine Solution

Advanced Engineering Materials, Volume 28, Issue 8, 22 April 2026.
Controlled laser‐surface treatment (LST) of duplex DSS2205 steel is performed to increase its stability in brine solution under cyclic electrochemical assays. The superior protection with respect to flat and smooth panels is attributed to the presence of FeCr2O4 as the main protective oxide layer in the LST surface, after corrosion tests. The stability
Mohammad Rezayat, Hamidreza Enshaei, Elaine Armelin, José I. Iribarren, Antonio Mateo, Miguel Morales   +5 more
wiley   +1 more source

Synchronization in DSSS system

, 2020
Direct sequence spread spectrum (DSSS) communication systems offer huge performance focal points in perspective on their low probability of block, improved performance in multipath fading situations and their capacity to stay away from interference by ...
Abboud, Izz K., Laith A. Kunbar, Abbas S. Hassan, Izz K. Abboud, Kunbar, Laith A., Hassan, Abbas S.   +5 more
core   +1 more source

Acceleration‐Aware Estimation and Compensation of Doppler Scale for Mobile UWA OFDM Systems

IET Communications, Volume 20, Issue 1, January/December 2026.
We propose a novel method to estimate and compensate for the Doppler scale caused by acceleration in orthogonal frequency division multiplexing (OFDM)‐based underwater acoustic (UWA) systems. Simulation results under additive white Gaussian noise (AWGN), synthetic multipath and realistic waymark channel conditions demonstrate that the proposed approach
Yong‐Ho Cho, Seung‐Geun Kim
wiley   +1 more source

Mixer‐Based Neural Network for Binary Sequence Generation

Electronics Letters, Volume 62, Issue 1, January/December 2026.
This paper proposes MixBinNet, a neural network‐based model for generating binary sequences with low autocorrelation sidelobes, low cross‐correlation and balanced bit distributions. By jointly optimizing these properties through custom loss functions, MixBinNet outperforms conventional chaotic map‐based methods, achieving improved correlation ...
Bora Yoon, Junghyun Kim, Hyojeong Choi, Hong‐Yeop Song   +3 more
wiley   +1 more source

Securing Machine‐Type Communications: A Survey on Privacy Threats and Countermeasures

IET Information Security, Volume 2026, Issue 1, 2026.
Machine‐type communication (MTC) is a fundamental enabler of the Internet of Things (IoT) and emerging 5G/6G networks, supporting massive deployments of heterogeneous and resource‐constrained devices. However, large‐scale data collection, persistent connectivity, and limited device capabilities introduce critical privacy challenges that are not ...
Amirhosein Imani, Alireza Keshavarz-Haddad, Peican Zhu   +2 more
wiley   +1 more source