Results 11 to 20 of about 197,075 (218)

Parametrical Synthesis of Radio Devices with the Set Quantity of Identical Cascades for Inclusion Variants of Jet Two-port Networks between a Nonlinear Part and Loading

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2021
Introduction. The ability to analytically determine some parameters of various radio devices, which are optimal according to the criterion of providing the set values of the modules and phases of transfer functions at the required number of frequencies ...
A. A. Golovkov, A. V. Fomin
doaj   +1 more source

Feedforward for Robust Reference Tracking in Multi-Input Feedback Control

open access: yesIEEE Access, 2021
This paper examines methods to incorporate feedforward loops of known external inputs (output reference) into a multi-input feedback control structure to achieve certain robust performance of its output.
Javier Rico-Azagra   +1 more
doaj   +1 more source

An Extended SFR Model With High Penetration Wind Power Considering Operating Regions and Wind Speed Disturbance

open access: yesIEEE Access, 2019
High-penetration wind power grid access requires wind turbine generators (WTGs) to provide frequency regulation, and an accurate system frequency response (SFR) model is required for frequency stability analysis.
Jianfeng Dai   +4 more
doaj   +1 more source

Dynamic Damping-Based Terminal Sliding Mode Event-Triggered Fault-Tolerant Pre-Compensation Stochastic Control for Tracked ROV

open access: yesJournal of Marine Science and Engineering, 2022
Due to the unknown disturbance caused by the harsh environment in deep water, the stability of Underwater Tracked Remotely Opreated Vehicle (UTROV) trajectory tracking control is affected; especially the resistance forces of random vibrations caused by ...
Qiyu Chen   +5 more
doaj   +1 more source

Maximum Power Point Tracking and Harmonic Reducing Control Method for Generator-Based Exercise Equipment

open access: yesEnergies, 2016
This study uses a sliding mode control (SMC) in a generator-based exercise equipment (GBEE) with nonlinear P-V characteristic curves. A P-V characteristics curve can be influenced by varying the pedaling speed of the generator.
Meng-Hui Wang   +2 more
doaj   +1 more source

Overview of researches on the status quo of blood donation service in China: based on CiteSpace knowledge mapping analysis

open access: yesZhongguo shuxue zazhi, 2022
Objective To analyze the researches on blood donation service during 2001 to 2020, explore the development of blood donation service in China and discover the hot spots and weaknesses in current research, aimed to provide reference for future research ...
Zhiyu ZHOU   +5 more
doaj   +1 more source

New controller (NPDCVF) outcome of FG cylindrical shell structure

open access: yesAlexandria Engineering Journal, 2022
This paper presents a new active controller technique effect of functionally graded (FG) cylindrical shell structure model within joint harmonic and parametric excitations.
H.S. Bauomy
doaj   +1 more source

Decreased connection density and modularity of functional brain networks during n‐back working memory paradigm

open access: yesBrain and Behavior, 2021
Introduction Investigating how the brain adapts to increased mental workload through large‐scale functional reorganization appears as an important research question.
Zalan Kaposzta   +4 more
doaj   +1 more source

Identifying transferable lessons from cholera epidemic responses by Médecins Sans Frontières in Mozambique, Malawi and the Democratic Republic of Congo, 2015–2018: a scoping review

open access: yesConflict and Health, 2022
Background Cholera epidemics occur frequently in low-income countries affected by concurrent humanitarian crises. Evaluations of these epidemic response remains largely unpublished and there is a need to generate evidence on response efforts to inform ...
Lauren D’Mello-Guyett   +9 more
doaj   +1 more source

Passive Microwave Component Design Using Inverse Scattering: Theory and Applications

open access: yesInternational Journal of Antennas and Propagation, 2013
We briefly review different synthesis techniques for the design of passive microwave components with arbitrary frequency response, developed by our group during the last decade.
Israel Arnedo   +7 more
doaj   +1 more source

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