Search results for "circuit model"

showing 3 items of 13 documents

Critical-state effects on microwave losses in type-II superconductors

2006

We discuss the microwave energy losses in superconductors in the critical state. The field-induced variations of the surface resistance are determined, in the framework of the Coffey and Clem model, by taking into account the distribution of the vortex magnetic field inside the sample. It is shown that the effects of the critical state cannot generally be disregarded to account for the experimental data. Results obtained in bulk niobium at low temperatures are quantitatively justified.

circuit modelSuperconductivityMaterials scienceCondensed matter physicsCondensed Matter - SuperconductivityVortex flowNiobiumFOS: Physical scienceschemistry.chemical_elementHigh temperature superconductorsCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsMagnetic fieldVortexSuperconductivity (cond-mat.supr-con)chemistryCondensed Matter::SuperconductivityType-II superconductorMicrowaveSheet resistanceThe European Physical Journal B - Condensed Matter and Complex Systems
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Chaos and its Degradation-Promoting-Based Control in an Antithetic Integral Feedback Circuit

2022

This letter deals with a novel variant of antithetic integral feedback controller (AIFC) motifs which can feature robust perfect adaptation, a pervasive (desired) ability in natural (synthetic) biomolecular circuits, when coupled with a wide class of process networks to be regulated. Using the separation of timescales in the proposed kind of AIFC, here we find a reducedorder controller that captures the governing slow part of the original solutions under suitable assumptions. Inspired by R(ossler systems, we then make use of such a simpler controller to show that the antithetic circuit can exhibit chaotic behaviors with strange attractors, where the bifurcation from a homeostatic state to c…

kaaosteoriaControl and OptimizationoscillatorsComputer sciencechaosControl (management)elektroniset piiritbiological system modelingprocess controloskillaattoritCHAOS (operating system)säätöteoriaControl and Systems EngineeringControl theoryintegrated circuit modelingmallit (mallintaminen)matemaattiset mallitmathematical modelsDegradation (telecommunications)degradation
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Toward Quaternary QCA : Novel Majority and XOR Fuzzy Gates

2022

As an emerging nanotechnology, quantum-dot cellular automata (QCA) has been considered an alternative to CMOS technology that suffers from problems such as leakage current. Moreover, QCA is suitable for multi-valued logic due to the simplicity of implementing fuzzy logic in a way much easier than CMOS technology. In this paper, a quaternary cell is proposed with two isolated layers because of requiring three particles to design this quaternary cell. Moreover, due to the instability of the basic gates, the three particles cannot be placed in one layer. The first layer of the proposed two-layer cell includes a ternary cell and the second one includes a binary cell. It is assumed that the over…

polarizationquaternaryGeneral Computer SciencekvanttitietokoneetGeneral Engineeringquantum dotsnanotekniikkapotential wellkvanttilaskentaCMOS technologyquantum computinglitografia (mikrovalmistus)XOR fuzzy gatelogic gatesintegrated circuit modelinglithographyGeneral Materials Sciencemulti-valued QCAsumea logiikkamajority fuzzy gateQQCA
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