Results 11 to 20 of about 5,439,443 (343)

The Design and Processor-In-The-Loop Implementation of a Super-Twisting Control Algorithm Based on a Luenberger Observer for a Seamless Transition between Grid-Connected and Stand-Alone Modes in Microgrids

open access: yesEnergies, 2023
The abrupt transfer from grid-connected (GC) to stand-alone (SA) operation modes is one of the major issues that may threaten the stability of a distributed generation (DG) system.
Ali Aillane   +6 more
doaj   +1 more source

A Hybrid Method of Rounded Hexagon Flux Direct Torque Control for Traction Motor in Mid-Speed Range

open access: yesIEEE Access, 2021
This paper proposes improved segment direct torque control (DTC) for full speed range in high-power urban rail vehicles engaged in frequent starting and braking.
Shu Cheng   +3 more
doaj   +1 more source

Optical and Hot-Film Measurements of the Boundary Layer Transition on a Naca Airfoil [PDF]

open access: yesE3S Web of Conferences, 2022
This study explores the possibilities of identifying position of a boundary layer transition using hot film measurements complemented by classical optical methods i.e. interferometry and schlieren method.
Šimurda David   +3 more
doaj   +1 more source

Linear Quadratic Regulator Based Smooth Transition Between Microgrid Operation Modes

open access: yesIEEE Transactions on Smart Grid, 2021
Dual mode operation capability of distributed energy resources in microgrids is an attractive feature that makes these systems a promising solution for improving reliability and economy of the power system.
M. Ganjian-Aboukheili   +3 more
semanticscholar   +1 more source

PERAMALAN HARGA BITCOIN DENGAN METODE SMOOTH TRANSITION AUTOREGRESSIVE (STAR)

open access: yesE-Jurnal Matematika, 2022
One of the spectacular advances in technology in the economic field is the cryptocurrency it created. The fluctuating price of Bitcoin, is widely used as a means of making profit.
I GEDE MAHA HENDRA PRATAMA   +2 more
doaj   +1 more source

Forecasting Inflation Uncertainty in the G7 Countries

open access: yesEconometrics, 2018
There is substantial evidence that inflation rates are characterized by long memory and nonlinearities. In this paper, we introduce a long-memory Smooth Transition AutoRegressive Fractionally Integrated Moving Average-Markov Switching Multifractal ...
Mawuli Segnon   +2 more
doaj   +1 more source

Smooth transition exponential smoothing [PDF]

open access: yesJournal of Forecasting, 2004
AbstractAdaptive exponential smoothing methods allow a smoothing parameter to change over time, in order to adapt to changes in the characteristics of the time series. However, these methods have tended to produce unstable forecasts and have performed poorly in empirical studies.
openaire   +2 more sources

Smooth Sub-Optimal Trajectory Generation for Transition Maneuvers

open access: yesIEEE Access, 2020
In this paper, a sub-optimal trajectory optimization method is developed to generate trajectories for transition phases connecting two steady flights.
Huixin Zheng   +4 more
doaj   +1 more source

Asymmetric volatility in cryptocurrency markets: New evidence from smooth transition GARCH models

open access: yesFinance Research Letters, 2020
This paper investigates the presence of asymmetric volatility dynamics in Bitcoin, Ethereum, Ripple, and Litecoin. Asymmetric effects between good and bad news are traditionally modeled using threshold GARCH models that allow only for two possible ...
Nidhaleddine Ben Cheikh   +2 more
semanticscholar   +1 more source

A Smooth Transition Algorithm for Adjacent Panoramic Viewpoints Using Matched Delaunay Triangular Patches

open access: yesISPRS International Journal of Geo-Information, 2020
The unnatural panoramic image transition between two adjacent viewpoints reduces the immersion and interactive experiences of 360° panoramic walkthrough systems.
Pengcheng Zhao   +3 more
doaj   +1 more source

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