Results 81 to 90 of about 2,245 (187)
Advanced Engineering Materials, Volume 28, Issue 15, 5 August 2026.This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele +2 more
wiley +1 more source
Image Steganography Based on NR-Polar DCSK System over Multipath Fading Channel
Journal of Communications Software and SystemsProtecting sensitive data has become an urgent necessity in wireless communication, which predates the emergence of Internet development, where signals transmitted over a channel are distorted by fading, noise, attackers, and interference, which leads to
Noor Dheyaa Majeed +2 more
doaj +1 more source
Flexible Dielectric Acoustic Resonator Patch for Tissue Regeneration
Advanced Materials, Volume 38, Issue 43, 3 August 2026.A flexible dielectric acoustic resonator patch enables MHz‐range ultrasound generation through resonance amplification without using piezoelectric materials. Conformal integration on a curved substrate allows efficient acoustic delivery to tissue‐mimicking environments.
Donyoung Kang +7 more
wiley +1 more source
Capacity of fully correlated MIMO system using character expansion of groups
International Journal of Mathematics and Mathematical Sciences, 2005 It is well known that the use of antenna arrays at both sides of communication link can result in high channel capacities provided that the propagation medium is rich scattering.
Ejaz Khan, Conor Heneghan
doaj +1 more source
Intrinsic Focus‐Like Light Concentration From Anti‐Resonant Hollow‐Core Fibers
Advanced Photonics Research, Volume 7, Issue 8, August 2026.The fundamental mode of hollow‐core waveguides is shown to produce intrinsic focus‐like light concentration in free space without external optics. Combined experiments and simulations reveal that this behavior originates from the non‐Gaussian nature of leaky modes, establishing a new mechanism for lensless beam shaping and compact optical interfacing ...
Shahrzad Hosseinabadi +3 more
wiley +1 more source
Journal of Raman Spectroscopy, Volume 57, Issue 8, Page 1359-1366, August 2026.Inter‐Theta‐Gram spectroscopy enables super‐spectral‐resolution Raman analysis by jointly reconstructing the excitation laser line and Raman peak during an etalon angle scan, yielding internally referenced Raman shifts. Demonstrated on lab‐grown versus natural diamond, it resolves 0.1–0.2 cm−1 Raman‐shift offsets that are invisible in conventional ...
Yishai Amiel +3 more
wiley +1 more source
EURASIP Journal on Advances in Signal Processing, 2008 A detailed analysis of the multiple access interference (MAI) for synchronous downlink CDMA systems is carried out for BPSK signals with random signature sequences in Nakagami-m fading environment with known channel phase.
M. Deriche +3 more
doaj +1 more source
A physics primer on photon‐counting detectors in CT: Physics, signal formation, and performance
Medical Physics, Volume 53, Issue 8, August 2026.Abstract Photon‐counting detector CT (PCD‐CT) is moving from laboratory development to clinical deployment. However, its threshold‐bin data arise from a tightly coupled detector–readout chain that can be difficult to understand as a whole. These data are not a direct readout of photon energy, but the outcome of a sequence of physical and electronic ...
Guang‐Hong Chen, Ruiran Lai, Ke Li
wiley +1 more source
International Journal of Robust and Nonlinear Control, Volume 36, Issue 12, Page 6047-6067, August 2026.ABSTRACT In this work, a new event‐triggered adaptive first‐order sliding mode control method is proposed for nonlinear systems with constant time delays, modeled by interval type‐2 Takagi–Sugeno (T–S) fuzzy systems. To handle matched disturbances with unknown upper bounds, a non‐overestimating adaptation strategy for the control coefficient is ...
Rodrigo Possidonio Noronha +1 more
wiley +1 more source
Exploiting Direct Link in Two-Way Half-Duplex Sensor Network over Block Rayleigh Fading Channel: Upper Bound Ergodic Capacity and Exact SER Analysis. [PDF]
Sensors (Basel), 2020 Tin PT +4 more
europepmc +1 more source