Results 21 to 30 of about 19,379,431 (255)

Review of Mechanisms and Suppression Methods for Low-Frequency Pressure Fluctuations in Open-Jet Wind Tunnels

open access: yesApplied Sciences, 2023
Low-frequency pressure fluctuations are common in open-jet wind tunnels, affecting test accuracy and posing safety risks to the wind tunnels. These oscillations can be caused by different mechanisms in different wind tunnels, and it is often necessary to
Ling Jin   +4 more
doaj   +1 more source

Modeling on the Effect of Coal Loads on Kinetic Energy of Balls for Ball Mills

open access: yesEnergies, 2015
This paper presents a solution for the detection and control of coal loads that is more accurate and convenient than those currently used. To date, no research has addressed the use of a grinding medium as the controlled parameter.
Yan Bai, Fang He
doaj   +1 more source

Finite‐time spatial path following control for a robotic underactuated airship

open access: yesIET Intelligent Transport Systems, 2020
This study presents a finite‐time spatial path following control method for a robotic underactuated airship subject to model uncertainties and external disturbances. A finite‐time path following approach is proposed by combining the backstepping approach
Weixiang Zhou   +3 more
doaj   +1 more source

Action of Different Exposures of Chilled Atmospheric Treatments on the Mortality of Granary Weevil and Embryo Viability of the Treated Wheat

open access: yesAgronomy, 2023
The granary weevil, Sitophilus granarius (L.), is considered a serious pest in stored grain worldwide. As residual-based protection possibilities become scarcer, the development of eco-friendly control technologies that can be implemented in practice is ...
Sándor Keszthelyi   +4 more
doaj   +1 more source

Improved branch and bound method for control structure screening [PDF]

open access: yes, 2005
The main aim of this paper is to present an improved algorithm of “Branch and Bound” method for control structure screening. The new algorithm uses a best- first search approach, which is more efficient than other algorithms based on depth-first search ...
Saha, Prabirkumar, Cao, Yi
core   +1 more source

Evolutionary dynamics and virulence factor variability in invasive Streptococcus pyogenes in Norway, 2017−2023

open access: yesmSphere
Invasive infections caused by Streptococcus pyogenes (iGAS) have increased in Europe over the past decade, with a marked upsurge after the COVID-19 pandemic.
Ola Brønstad Brynildsrud   +4 more
doaj   +1 more source

Amidst centralized and distributed frequency control in power systems

open access: yes, 2016
We propose a novel frequency control approach in between centralized and distributed architectures, that is a generalized continuous-time feedback control version of the dual decomposition optimization method.
GRAMMATICO, SERGIO   +7 more
core   +1 more source

Combining an agent-based model with Gaussian process emulation to model the emergence of the SARS-CoV-2 Omicron variant in Norway

open access: yesEpidemics
Agent-based models (ABMs) are powerful for simulating detailed infectious disease dynamics, but they are computationally intensive, limiting parameter inference.
Alfonso Diz-Lois Palomares   +4 more
doaj   +1 more source

High-permeability Distributed Power Control Method

open access: yes发电技术, 2021
In view of the increasing permeability of renewable energy in microgrid, the problems of inertia and insufficient damping of microgrid are more and more prominent.
Yonggeng LU   +3 more
doaj   +1 more source

Study on decoupling control method of vehicle wheel bridge simulation loading system

open access: yesThe Journal of Engineering, 2019
There are mechanical coupling interference and hydraulic coupling interference in the vehicle wheel bridge simulation loading system based on secondary regulation, which can cause the control accuracy of the system to decrease obviously and seriously ...
Zhuo Xu, Yahui Nie
doaj   +1 more source

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