Results 31 to 40 of about 119,280 (298)
Simplified Chua's attractor via bridging a diode pair
The Journal of Engineering, 2015 In this paper, a simplified Chua's circuit is realised by bridging a diode pair between a passive LC (inductance and capacitance in parallel connection - LC) oscillator and an active RC (resistance and capacitance in parallel connection - RC) filter. The
Quan Xu, Bo-Cheng Bao
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Antiperiodic oscillations [PDF]
Scientific Reports, 2013 The investigation of regular and irregular patterns in nonlinear oscillators is an outstanding problem in physics and in all natural sciences. In general, regularity is understood as tantamount to periodicity. However, there is now a flurry of works proving the existence of "antiperiodicity", an unfamiliar type of regularity.
Freire, Joana G. +4 more
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Molecular bases of circadian magnesium rhythms across eukaryotes
FEBS Letters, EarlyView.Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
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Set-Valued and Variational Analysis, 2017 In previous work by Beer and Levi [8, 9], the authors studied the oscillation $ (f,A)$ of a function $f$ between metric spaces $\langle X,d \rangle$ and $\langle Y, \rangle$ at a nonempty subset $A$ of $X$, defined so that when $A =\{x\}$, we get $ (f,\{x\}) = (f,x)$, where $ (f,x)$ denotes the classical notion of oscillation of $f$ at the point $
Beer, Gerald, Cao, Jiling
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Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing
FEBS Letters, EarlyView.Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
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Oscillator-Based Processing Unit for Formant Recognition
InformationOscillatory neural networks have so far been successfully applied to a number of computing problems, such as associative memories, or to handle computationally hard tasks.
Tamás Rudner-Halász +2 more
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Photo-Detectors Integrated with Resonant Tunneling Diodes
Sensors, 2013 We report on photo-detectors consisting of an optical waveguide that incorporates a resonant tunneling diode (RTD). Operating at wavelengths around 1.55 μm in the optical communications C band we achieve maximum sensitivities of around 0.29 A/W which is ...
José M. L. Figueiredo +4 more
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Towards Portable MEMS Oscillators for Sensing Nanoparticles
Sensors, 2022 This paper reports on the design, and implementation of piezoelectric-on-silicon MEMS resonators installed within a portable experimental setup for sensing nanoparticles in a laboratory environment.
Malar Chellasivalingam +4 more
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Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
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