Results 31 to 40 of about 1,137,364 (312)

Harmonic conjugation in harmonic matroids

Discrete Mathematics, 2009
This paper was finished in 2008.
openaire   +2 more sources

Coupling microstrip line bandpass filter applied to hybrid frequency synthesizers

Dianzi Jishu Yingyong, 2018
This paper designs a parallel coupled microstrip bandpass filter at the ends of the hybrid frequency synthesizer of PLL+DDS mixing in the outside of the feedback loop systems. This filter is used to suppress the frequency synthesizer′s spurs and harmonic
Chai Xiaorong, Lei Xuemei, Cheng Shaoting   +2 more
doaj   +1 more source

Load analysis and deformation research of the flexible bearing based on a three-force ring superposition method

Mechanics & Industry, 2021
The flexible bearing is a key component of harmonic reducer enabling the flexspline to generate a controllable elastic deformation. Its performance and life will significantly affect the normal operation of harmonic reducer.
Yu Yang, Zhu En, Chen Xiaoyang, Wang Yang   +3 more
doaj   +1 more source

Super-harmonic injection locking of nano-contact spin-torque vortex oscillators

, 2016
Super-harmonic injection locking of single nano-contact (NC) spin-torque vortex oscillators (STVOs) subject to a small microwave current has been explored. Frequency locking was observed up to the fourth harmonic of the STVO fundamental frequency $f_{0}$
Dürrenfeld, P., Hicken, R. J., Hrkac, G., Keatley, P. S., Mohseni, S. M., Sani, S. R., Åkerman, J.   +6 more
core   +1 more source

Capturing Long-Range Dependence and Harmonic Phenomena in 24-Hour Solar Irradiance Forecasting: A Quantile Regression Robustification via Forecasts Combination Approach

IEEE Access, 2020
The global horizontal irradiance data recorded at the earth's horizontal surface is a mixture of deterministic (extra-terrestrially) and stochastic components due to the ever-changing atmospheric conditions. The Box-Jenkins short memory stochastic models
Edmore Ranganai, Caston Sigauke
doaj   +1 more source

Hericium ophelieae sp. nov., a novel species of Hericium (Basidiomycota: Russulales, Hericiaceae) from the Southern Afrotemperate forests of South Africa

Mycology, 2023
A novel species of Hericium was recently collected in the Afrotemperate forests (Knysna – Amatole region) of Southern Africa. The novel species shares many similar, dentate features common to other species in Hericium, and its basidiome first appears ...
B. Van der Merwe, P. Herrmann, Karin Jacobs   +2 more
doaj   +1 more source

On products of harmonic forms

, 2000
We prove that manifolds admitting a Riemannian metric for which products of harmonic forms are harmonic satisfy strong topological restrictions, some of which are akin to properties of flat manifolds. Others are more subtle, and are related to symplectic
Kotschick, D.
core   +1 more source

Leveraging multiple data types for improved compound-kinase bioactivity prediction

Nature Communications
Machine learning provides efficient ways to map compound-kinase interactions. However, diverse bioactivity data types, including single-dose and multi-dose-response assay results, present challenges.
Ryan Theisen, Tianduanyi Wang, Balaguru Ravikumar, Rayees Rahman, Anna Cichońska   +4 more
doaj   +1 more source

Analysis of Energy Transport Behavior and Geometric Effects in Graphene

Frontiers in Mechanical Engineering, 2020
Graphene is an excellent heat conductor, with the potential to be used as a heat spreader for applications where there are fast, transient heat pulses.
Alejandro Guajardo-Cuéllar, David B. Go, David B. Go, Mihir Sen   +3 more
doaj   +1 more source

Irreversible quantum graphs

, 2003
Irreversibility is introduced to quantum graphs by coupling the graphs to a bath of harmonic oscillators. The interaction which is linear in the harmonic oscillator amplitudes is localized at the vertices.
Breit G, Carlson R, Feshbach H, Feshbach H, Feynman R P, Killip R, Killip R Simon B, Kostrykin V, Kottos T, Kottos T, Kottos T, Kottos T, Kuchment P, Pauli W, Solomyak M, Uzy Smilansky, Van Hove L   +16 more
core   +1 more source