Results 141 to 150 of about 18,147 (273)
A Southern Ocean Multidecadal Oscillator Forced by Deep Convection
Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.Abstract Some climate models exhibit multidecadal‐to‐centennial variability of the Southern Ocean (SO) associated with open‐ocean polynyas and deep convection. We characterize the SO variability of the Community Earth System Model (version 1) under preindustrial conditions run with two different ocean resolutions, low‐resolution (∼1°) and high ...
Robert R. Ford, Brian E. J. Rose
wiley +1 more source
Multi-Modulator for Bandwidth-Efficient Communication [PDF]
A modulator circuit board has recently been developed to be used in conjunction with a vector modulator to generate any of a large number of modulations for bandwidth-efficient radio transmission of digital data signals at rates than can exceed 100 Mb/s.
Cheetham, Craig +9 more
core +1 more source
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.Abstract Stratospheric aerosol injection (SAI), whereby reflective particles are released into the stratosphere to induce cooling, is one possible tool to counteract global warming and its associated risks. However, there is much uncertainty surrounding how SAI would be deployed, as well as the potential of novel and unknown risks and impacts.
Cameron Dong +2 more
wiley +1 more source
Nanophotonics, Volume 15, Issue 5, 16 March 2026.A CMOS‐compatible silicon‐photonic 4 × 4 coherent receiver array spatially samples turbulence‐distorted wavefronts and, with maximum‐ratio combining, enables signal recovery. Experimental BPSK tests under moderate turbulence approach theoretical combining efficiency, reducing BER from 1E‐2 to 1E‐15.
Alireza Fardoost +7 more
wiley +1 more source
Breaking Barriers in High‐Order Spectral Methods: The Intrinsic Matrix Approach
International Journal for Numerical Methods in Engineering, Volume 127, Issue 5, 15 March 2026.ABSTRACT This paper introduces a unified framework in Hilbert spaces for applying high‐order differential operators in bounded domains using Chebyshev, Legendre, and Fourier spectral methods. By exploiting the banded structure of differentiation matrices and embedding boundary conditions directly into the operator through a scaling law relating ...
Osvaldo Guimarães, José R. C. Piqueira
wiley +1 more source
Development of a coded 16-ary CPFSK coherent demodulator [PDF]
Theory and hardware are described for a proof-of-concept 16-ary continuous phase frequency shift keying (16-CPFSK) digital modem. The 16 frequencies are spaced every 1/16th baud rate for 2 bits/sec/Hz operation.
Clarke, Ken, Davis, Robert, Roesch, Jim
core +1 more source
Considerations of digital phase modulation for narrowband satellite mobile communication [PDF]
The Inmarsat-M system for mobile satellite communication is specified as a frequency division multiple access (FDMA) system, applying Offset Quadrature Phase Shift Keying (QPSK) for transmitting 8 kbit/sec in 10 kHz user channel bandwidth.
Grythe, Knut
core +1 more source
Noise immunity of reception of signals with quadrature amplitude modulation in the presence of interference with phase-shift keying. [PDF]
, 2019 G.L. Kulikov +3 more
openalex +1 more source