Results 181 to 190 of about 375,340 (303)

Six‐Component Electromagnetic Wave Measurements of Sprite‐Associated Lightning

open access: yesRadio Science, Volume 61, Issue 2, February 2026.
Abstract Low frequency electromagnetic waves emitted by sprite‐producing lightning are normally measured using vertical electric fields or horizontal magnetic fields. Here we report for the first time the simultaneous measurement of electromagnetic waves from sprite‐producing lightning in all six electromagnetic field components Ex,Ey,Ez,Hx,Hy,andHz ...
Martin Füllekrug   +4 more
wiley   +1 more source

Informational Efficiency in Cryptocurrency Markets: A Bibliometric and Thematic Literature Review (2015–2024)

open access: yesJournal of Economic Surveys, Volume 40, Issue 1, Page 443-468, February 2026.
ABSTRACT Cryptocurrency markets are known for their wide price fluctuations, lack of central control, and fast‐paced development. These characteristics present serious challenges to traditional theories about how markets work and how prices reflect available information.
Giulia Fantini, Joy Jia, Chiara Oldani
wiley   +1 more source

Instantaneous Material Classification Using a Polarization-Diverse RMCW LIDAR. [PDF]

open access: yesSensors (Basel)
Pulikkaseril C   +4 more
europepmc   +1 more source

Digital Controlled Oscillator for All-Digital Phase-Locked Loop Circuit

open access: yesProblems of advanced micro- and nanoelectronic systems development, 2020
openaire   +1 more source

A Multi‐Scale Approach to Assessing Positioning Accuracy in High‐Density Urban Environments of Hong Kong

open access: yesTransactions in GIS, Volume 30, Issue 1, February 2026.
ABSTRACT This study examined GPS positioning accuracy in high‐density urban environments using Hong Kong as a representative case study. Through field measurements along 32 testing routes using three GPS devices, we evaluated GPS performance across diverse urban morphologies to assess associations between complex urban characteristics and positioning ...
Tianyu Li, Yanjia Cao, Grant McKenzie
wiley   +1 more source

Overview of Research Progress and Application Prospects of Thermal Test Chips. [PDF]

open access: yesMicromachines (Basel)
Ju L   +9 more
europepmc   +1 more source

Solid‐State Vortex Laser at Eye‐Safe Band: A Perspective

open access: yesNanophotonics, Volume 15, Issue 2, 27 January 2026.
As one of the ideal vortex sources, solid‐state vortex laser at eye‐safe band has attracted considerable attention because of its potentials in multifunctional lidar. In this perspective, we summarize the schemes of eye‐safe vortex laser and discuss prospects for future development.
Haojun Zhang   +4 more
wiley   +1 more source

Dynamic beam-stabilized, additive-printed flexible antenna arrays with on-chip rapid insight generation. [PDF]

open access: yesNat Commun
Poolakkal S   +12 more
europepmc   +1 more source

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