Quantum-dot Cellular Automata (QCA) is an emerging nanotechnology, with extremely small feature size and ultralow power consumption comparing transistor-based technology. Anteriority, basic level-triggered flip-flop designs based on QCA implementation were examined. In this paper, we utilize the unique characteristics clock zones to design falling edge-triggered J-K that stable practical. Simulation QCADesigner simulator performed verify functionality of proposed flip-flop. This paper also...

In this study, two components of a coupled Ocean–Atmosphere–Wave–Sediment Transport modelling system, the atmosphere model Weather Research Forecasting (WRF) and ocean Regional Ocean Modeling System (ROMS), are used to investigate relationships between tropical cyclone (TC) intensity changes mixed‐layer depth (MLD) as well translation speed through series idealized experiments. The WRF‐ROMS can simulate TC sea‐surface temperature (SST) cooling induced by TCs under different MLD background...

SUMMARY Quantum‐dot cellular automata (QCA) nanotechnology is considered as the best candidate for memory system owing to its dense packages and low power consumption. This paper analyzes drawbacks of previous QCA architectures improves cell that exploits regular clock zone layout by employing two new clocking signals a compact Read/Write circuit. The proposed verified with modified QCADesigner simulator analyzed considering noise effect. design, occupying only fraction area compared has...

Abstract Motivated by the limited understanding of future changes in mesoscale convective systems (MCSs), we investigated characteristics warm‐season (June–August) MCSs central United States based on high‐resolution convection‐permitting Weather Research and Forecasting simulations. We examined two 15‐year simulations, which include current simulations (2004–2018) forced European Centre for Medium‐Range Forecasts Reanalysis version 5 (ERA5) (2086–2100) perturbed ERA5 (i.e., plus climate...

In the paper, function projective synchronization of quantum cellular neural network with uncertain system parameters and Lorenz hyperchaotic is studied. The adaptive controllers are proposed to make states two different chaotic systems asymptotically synchronized up a desired scaling function. We also present relevant proof by applying Lyapunov stability theory. Moreover, linear independence coefficient vector in analyzed theoretically, which aims realize unknown parameter identification...

In this paper, we present a simulation study on clocking misalignment tolerance of pipelined magnetic quantum-dot cellular automata (MQCA) architectures. By the three-phase and deduced model, systematic evaluation impacts four fundamental MQCA architectures is performed at non-zero temperatures. It found that for fixed nanomagnet size, majority logic gate most reliable structure, while corner susceptible to misalignment. High temperature gives rise negative effect allowable angles. The...

In this paper, switching behaviors of MQCA inverter and majority logic gate with various nanomagnet thicknesses spacings are studied. Single domain approximation Landau-Lifshitz-Gilbert equation is employed to model simulate the circuits. It shown that thicker needs larger magnetic pulse circuits comprised demonstrate slower switching; more time switch than when they have same spacings. Moreover, it also spacing has a effect on behavior gate.

Based on the structure of cellular neural network, multi-scroll Chua’s circuit is implemented by nanoelectronic device hybrid single electron transistor and metal oxide semiconductor (SETMOS) with its negative differential resistance characteristic. The basic dynamical properties, including phase portrait, bifurcation diagram, Lyapunov exponent spectrum, Poincaré mapping power spectrum are studied theoretic analysis numerical simulation. validity feasibility three-order four scrolls further...

Abstract Numerous studies have demonstrated that the tropical cyclone (TC) induced sea surface temperature (SST) cooling strongly depends on preexisting oceanic condition and TC characteristics. However, very few focused correlation of SST subsequent intensity with size. Therefore, a series idealized numerical experiments are conducted using Weather Research Forecasting (WRF) model coupled Regional Ocean Model System (ROMS) to understand how vortex size is related changes stationary TC‐like...

Magnetic quantum-dot cellular automata (MQCA) function arrays are fabricated by electron beam lithography, thermal evaporation and lift-off technologies at room temperature. The effects of exposure dose time on MQCA array patterns with three various spacings experimentally investigated. results show that the ideal pattern can only be obtained 100 pA current 0.38 μs time. force microscopy measurement inverter structure shows demonstrates correct logic operation, which validates feasibility...

In this paper, a mathematical model for handover performance indicators in LTE(long time evolution) wireless networks is proposed with the aim of predicting parameters and improving reliability efficiency, considering impact interdependency key settings (offset, TTT, UE velocity, distance). The best combination can be easily achieved by finding optimal solution nonlinear optimization problem, which results efficient reduction target (HO) failure rate ping pong rate. modification also...

In order to apply carbon nanotube field effect transistor (CNTFET) circuit simulation, maintaining an acceptable accuracy while minimizing computation time is a major problem. To establish simple and high CNTFET model in HSPICE, based on the semi-classical of CNTFET, relationship between self-consistent electric potential carrier density analyzed, linear approximation used for curve fitting, explicit expression deduced, so that iterative solution integral equation avoided. Then HSPICE built....

Magnetic quantum-dot cellular automata (MQCA) corner structure consists of both ferromagnetic coupling and anti-ferromagnetic coupling. Signal propagation for magnetic material Fe is theoretically investigated by applying an external clocking field method. Magnetization evolution image on signal the presented micromagnetic simulation; it shown that nanomagnets can ensure stable switching including two kinds lengthy The proposed then fabricated electron beam lithography, thermal evaporation...

The negative differential resistance (NDR) characteristic equation of single electron transistor and metal oxide semiconductor (SETMOS) hybrid structure is simplified by a fitting method. And new approach to designing multi-scroll chaotic circuit with SETMOS proposed. effect NDR on the equilibrium point Chua’s analyzed both qualitatively quantitatively. results show that unidirectional motions radial contract axial tension occur in sections circuit, whereas positive appear scroll contract....