Results 21 to 30 of about 1,709,190 (338)

A switchable terahertz metamaterial absorber between ultra-broadband and dual bands

open access: yesFrontiers in Physics, 2023
Based on the phase change properties of vanadium dioxide (VO2), we propose a terahertz metamaterial absorber that can be switched flexibly between ultra-broadband and dual bands.
Zhi Ren   +13 more
doaj   +1 more source

Study of a Si-based light initiated multi-gate semiconductor switch for high temperatures

open access: yesScientific Reports, 2022
Light initiated multi-gate semiconductor switch (LIMS) is a kind of power electronic device which has many differences from traditional thyristor triggered by electric pulse.
Chongbiao Luan   +9 more
doaj   +1 more source

What are the Problem Representations and Assumptions About Gender Underlying Research on Gender in Physics and Physics Education? A Systematic Literature Review

open access: yesRevista Brasileira de Pesquisa em Educação em Ciências, 2020
This work offers a systematic literature review of Brazilian and international research on gender in physics and physics education published over the last decade (2010–2019). We draw on a poststructuralist analytical approach to discuss assumptions about
Carolina de Barros Vidor   +3 more
doaj   +3 more sources

Power laws in physics

open access: yesNature Reviews Physics, 2022
Getting the most from power-law-type data can be challenging. James Sethna points out some of the pitfalls in studying power laws arising from emergent scale invariance, as well as important opportunities.
openaire   +2 more sources

Analysis of the D-wave $$\Sigma $$ Σ -type charmed baryon states with the QCD sum rules

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
We construct the $$\Sigma $$ Σ -type currents to investigate the D-wave charmed baryon states with the QCD sum rules systematically. The predicted masses $$M=3.35^{+0.13}_{-0.18}\,\textrm{GeV}$$ M = 3 .
Zhi-Gang Wang, Fei Lu, Yang Liu
doaj   +1 more source

The Power of Physical Representations

open access: yesAi Magazine, 1989
Commonsense reasoning about the physical world, as exemplified by "Iron sinks in water" or "If a ball is dropped it gains speed," will be indispensable in future programs. We argue that to make such predictions (namely, envisioning), programs should use abstract entities (such as the gravitational field), principles (such as the principle of ...
Akman, V., ten Hagen, P. J. W.
openaire   +4 more sources

Improved control effect of pathological oscillations by using delayed feedback stimulation in neural mass model with pedunculopontine nucleus

open access: yesBrain and Behavior, 2023
Background The role of delayed feedback stimulation in the discussion of Parkinson's disease (PD) has recently received increasing attention. Stimulation of pedunculopontine nucleus (PPN) is an emerging treatment for PD.
Yingpeng Liu   +4 more
doaj   +1 more source

Wind Farm Modeling with Interpretable Physics-Informed Machine Learning

open access: yesEnergies, 2019
Turbulent wakes trailing utility-scale wind turbines reduce the power production and efficiency of downstream turbines. Thorough understanding and modeling of these wakes is required to optimally design wind farms as well as control and predict their ...
Michael F. Howland, John O. Dabiri
doaj   +1 more source

Analysis of the X(3960) and related tetraquark molecular states via the QCD sum rules

open access: yesAAPPS Bulletin, 2022
In this work, we study the $$D\bar{D}$$ D D ¯ , DD, $$D\bar{D}_s$$ D D ¯ s , $$DD_s$$ D D s , $$D_s\bar{D}_s$$ D s D ¯ s and $$D_sD_s$$ D s D s tetraquark molecular states with the $$J^{PC}=0^{++}$$ J PC = 0 + + via the QCD sum rules. The prediction $$M_{
Qi Xin, Zhi-Gang Wang, Xiao-Song Yang
doaj   +1 more source

The Performance of the Two-Seeded GdBCO Superconductor Bulk with the Buffer by the Modified TSMG Method

open access: yesMicromachines, 2023
The multiseeding technique is a method to grow large-sized REBa2Cu3O7−δ (REBCO, where RE is a rare earth element) high temperature superconducting bulks.
Yufeng Zhang   +7 more
doaj   +1 more source

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