Results 51 to 60 of about 5,210,021 (184)
IEEE Access, 2020 This paper studies the design and performance analysis of relay-assisted satellite free-space optics (FSO) quantum key distribution (QKD) systems for secure vehicular networks.
Minh Quang Vu +3 more
doaj +1 more source
Tuning the Phase Structure and Electrical Properties of BNKT‐Based Ceramics via Li+ Doping
Advanced Materials Interfaces, Volume 13, Issue 6, 16 March 2026.Li+‐doped Bi0.5[Na0.84‐xK0.16Lix]0.5TiO3 lead‐free piezoelectric ceramics are fabricated. The optimized composition delivers a high piezoelectric coefficient d33 and elevated depolarization temperature Td. It also shows large electrostrain and high Curie temperature, greatly extending the working temperature range for BNT‐based piezoelectric ...
Guangzhi Dong +9 more
wiley +1 more source
Trading Zones Between Thick and Thin: Anthropological Description as Scaffold or Mosaic
American Anthropologist, Volume 128, Issue 1, Page 159-170, March 2026.ABSTRACT Referring to the work of historian of science Peter Galison, I argue that anthropology requires thin description as an essential counterpart for thick description. Thin accounts provide the scaffolding within which thick descriptions sit. Galison uses the idea of a “trading zone” connecting different communities who, despite their differences (
David Zeitlyn
wiley +1 more source
Utilization of Spatially Distributed mHVSR to Assess the Effectiveness of Ground Response Analysis
Earthquake Spectra, Volume 42, Issue 1, February 2026.One‐dimensional ground response analyses (GRAs) can introduce model error to site response estimates when wave propagation is not dominated by vertically propagating shear waves. We investigate whether the variability of spatially distributed microtremor‐based horizontal‐to‐vertical spectral ratios (mHVSR) is related to GRA effectiveness using data ...
Francisco Javier G. Ornelas +2 more
wiley +1 more source
Research on Three‐Dimensional Autonomous Obstacle Avoidance Path Planning Methods for UAVs
Transactions on Emerging Telecommunications Technologies, Volume 37, Issue 2, February 2026.This study presents a three‐dimensional autonomous obstacle‐avoidance path planning method for unmanned aerial vehicles (UAVs) based on a deep reinforcement learning (DRL)‐enhanced Mayfly Algorithm. The traditional Mayfly Algorithm suffers from issues such as random initial population generation and slow convergence.
Chong Wu, Hao Cheng, Hua Wang
wiley +1 more source
New look at secure performance of massive MIMO with low-resolution DACs
ICT Express, 2023 Since the requirement of secure transmission for massive multiple-input–multiple-output (mIMO) is high, we consider a secure massive MIMO system in presence of multiple digital to analog converters (DACs). We deal with complicated performance analysis of
Anh-Tu Le +4 more
doaj +1 more source
Noncausal AR‐ARCH Model and Its Applications to Financial Time Series
International Journal of Finance &Economics, Volume 31, Issue 1, Page 1424-1443, January 2026.ABSTRACT We extend the noncausal autoregressive models by introducing noncausality into the variance component, allowing the volatility to depend on future prices as well. We refer to this model as the noncausal AR‐ARCH model, and it enables us to account for shocks arising from market agents who possess more information and engage in forward‐looking ...
Yaosong Zhan +3 more
wiley +1 more source
On the Optimum Secrecy Outage Probability and Ergodic Secrecy Rate over Wireless Channels
We study the secrecy of wireless channels in the presence of an eavesdropper, where the channels are random and the transmitter only has knowledge of the channel statistics. We investigate the optimal input distribution with respect to several secrecy metrics: the Secrecy Outage Probability (SOP), defined as the probability that the coding rate $r ...
Leroy, Clement +3 more
openaire +2 more sources
FPGA Realization of a Novel Hyperchaos Augmented Image Encryption Algorithm
IET Computers &Digital Techniques, Volume 2026, Issue 1, 2026.With the rapid growth of multimedia communication, protecting image data has become increasingly critical. This article proposes a novel 3‐stage hyperchaos‐based augmented image encryption technique (3SHAIET) that utilizes a three‐stage process with chaotic systems of increasing dimensionality (e.g., six‐dimensional [6D], 8D, and 9D) to enhance ...
Wassim Alexan +6 more
wiley +1 more source
Robust outage secrecy rate optimizations for a MIMO secrecy channel
, 2015 This letter investigates robust secrecy rate optimization techniques for a multiple-input-multiple-output (MIMO) wiretap channel in the presence of a multiantenna eavesdropper.
Johnston, Martin +4 more
core +4 more sources