Results 31 to 40 of about 56,706 (267)

Celebration of the centenary of a major scientific milestone thanks to Heinrich Barkhausen

open access: yesInternational Journal for Simulation and Multidisciplinary Design Optimization, 2020
Brief history of a perfect optimization with the oscillation condition and microwave tube as well as contributions to oscillators at the occasion of the centenary of a great step forward thanks to genius Heinrich Barkhausen with his pages of glory in the
Salzenstein Patrice   +1 more
doaj   +1 more source

Fabrication of Fiber Bragg Gratings by Visible Femtosecond Laser for Multi-kW Fiber Oscillator

open access: yesIEEE Photonics Journal, 2022
In this paper, we fabricate a pair of fiber Bragg gratings (FBGs) in large mode area double cladding fiber (LMA-DCF, core/inner cladding diameter: 20/400 μm) by visible (515 nm) femtosecond laser and phase mask for the first time to ...
Hongye Li   +9 more
doaj   +1 more source

SYNCHRONOUS OSCILLATIONS IN VAN DER POL GENERATOR WITH MODULATED NATURAL FREQUENCY

open access: yesRadio Physics and Radio Astronomy, 2015
The synchronous operation of Van Der Pole generator with the low-frequency modulated natural frequency has been investigated. The presence of low-frequency modulation is shown to lead to formation of additional synchronization regions.
A. Yu. Nimets, D. M. Vavriv
doaj   +1 more source

Spike oscillations [PDF]

open access: yesPhysical Review D, 2012
38 pages, 14 ...
Heinzle, J. Mark   +2 more
openaire   +3 more sources

A Capacitive Pressure Sensor Interface IC with Wireless Power and Data Transfer

open access: yesMicromachines, 2020
This paper presents a capacitive pressure sensor interface circuit design in 180 nm XH018 CMOS technology for an implantable capacitive pressure sensor, which has a wireless power supply and wireless data transfer function.
Chaoping Zhang   +3 more
doaj   +1 more source

Three-Dimensional, Time-Dependent Analysis of High- and Low-Q Free-Electron Laser Oscillators

open access: yesApplied Sciences, 2021
Free-electron lasers (FELs) have been designed to operate over virtually the entire electromagnetic spectrum, from microwaves through to X-rays, and in a variety of configurations, including amplifiers and oscillators. Oscillators can operate in both the
Peter J. M. van der Slot   +1 more
doaj   +1 more source

Antiperiodic oscillations [PDF]

open access: yesScientific 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
openaire   +3 more sources

Printed Integrated Logic Circuits Based on Chitosan‐Gated Organic Transistors for Future Edible Systems

open access: yesAdvanced Functional Materials, EarlyView.
Edible electronics needs integrated logic circuits for computation and control. This work presents a potentially edible printed chitosan‐gated transistor with a design optimized for integration in circuits. Its implementation in integrated logic gates and circuits operating at low voltage (0.7 V) is demonstrated, as well as the compatibility with an ...
Giulia Coco   +8 more
wiley   +1 more source

Demonstration of Three True Random Number Generator Circuits Using Memristor Created Entropy and Commercial Off-the-Shelf Components

open access: yesEntropy, 2021
In this work, we build and test three memristor-based true random number generator (TRNG) circuits: two previously presented in the literature and one which is our own design.
Scott Stoller, Kristy A. Campbell
doaj   +1 more source

Oscillation Revisited

open access: yesSet-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
openaire   +2 more sources

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