Results 21 to 30 of about 313,545 (301)
Untangling cross-frequency coupling in neuroscience [PDF]
Abstract Cross-frequency coupling (CFC) has been proposed to coordinate neural dynamics across spatial and temporal scales. Despite its potential relevance for understanding healthy and pathological brain function, the standard CFC analysis and physiological interpretation come with fundamental problems.
Aru, Juhan +7 more
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The modular multilevel matrix converter (M3C) is the core equipment for fractional frequency transmission system (FFTS). The AC-AC conversion of M3C leads to direct coupling of the ac electrical quantities at different frequencies,causing complex ...
SUN Yuwei +5 more
doaj +1 more source
The functional role of cross-frequency coupling [PDF]
Recent studies suggest that cross-frequency coupling (CFC) might play a functional role in neuronal computation, communication and learning. In particular, the strength of phase-amplitude CFC differs across brain areas in a task-relevant manner, changes quickly in response to sensory, motor and cognitive events, and correlates with performance in ...
Ryan T, Canolty, Robert T, Knight
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The voltage disturbance in the weak grid will cause frequency coupling and even persistent oscillation of the grid current of grid connected converter in power system.
Qi Wang, Xingyong Zhao, Peng Wang
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Research Paper: Influence of Intrinsic Decoherence on Entanglement and Teleportation in Jaynes- Cummings Model in a Two- Qutrit System [PDF]
This paper uses the Jaynes-Cummings model to investigate the entanglement of a two-qutrit state in a cavity. The entanglement is analyzed as a function of decoherence rate, coupling constant, and frequency of atomic transition.
Azita Naji +2 more
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Recently, small-signal stability of the modular multilevel converter (MMC) based high-voltage direct current (HVDC) transmission for wind farm integration has attracted great attentions.
Haoxiang Zong +5 more
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Optomechanical coupling between ultracold atoms and a membrane oscillator [PDF]
In this thesis, I report on the realization of a hybrid optomechanical system in which ultracold atoms are coupled to a micromechanical membrane. The atoms are trapped in the intensity maxima of an optical standing wave formed by retroreflection of a ...
Korppi, Maria
core +1 more source
Synchronization by reactive coupling and nonlinear frequency pulling [PDF]
We present a detailed analysis of a model for the synchronization of nonlinear oscillators due to reactive coupling and nonlinear frequency pulling. We study the model for the mean field case of all-to-all coupling, deriving results for the initial onset of synchronization as the coupling or nonlinearity increase, and conditions for the existence of ...
Cross, M. C. +3 more
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Realization and characterization of optical frequency standards [PDF]
During the Ph.D. Course I worked on the realization and the characterization of an ytterbium optical frequency standard. Since year 2000, it is possible using optical frequency comb to directly and reliably scale a frequency measurement in the optical ...
Pizzocaro, Marco, Manfredi, Paolo
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The role of the relative voltage and phase for frequency coupling in a dual-frequency capacitively coupled plasma [PDF]
Frequency coupling in multifrequency discharges is a complex nonlinear interaction of the different frequency components. An alpha-mode low pressure rf capacitively coupled plasma operated simultaneously with two frequencies is investigated and the coupling of the two frequencies is observed to greatly influence the excitation and ionization within the
D. O’Connell +3 more
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