Results 31 to 40 of about 1,668,806 (304)

Improved Virtual Synchronous Generator-Based Control Scheme for Enhanced Transient Response in Microgrids

open access: yesEngineering Proceedings, 2023
Synchronous generator-based power stations, with their inherent inertia, can maintain frequency stability during sudden load switching, while distributed generating station-driven microgrids suffer from a lack of natural inertia. Cascaded power, voltage,
Mandarapu Srikanth   +1 more
doaj   +1 more source

Time evolution of the microwave second-order response of YBaCuO powder

open access: yes, 2003
Transient effects in the microwave second-order response of YBaCuO powder are investigated. The time evolution of the second harmonic signal has been measured for about 300 s after the sample had been exposed to variations of the DC magnetic field.
A. Agliolo Gallitto   +25 more
core   +1 more source

Convective instability and transient growth in flow over a backward-facing step [PDF]

open access: yes, 2008
Transient energy growths of two- and three-dimensional optimal linear perturbations to two-dimensional flow in a rectangular backward-facing-step geometry with expansion ratio two are presented.
Barkley, Dwight   +2 more
core   +3 more sources

Mechanical Characteristics and Precision Analysis of Inflatable Deployable Parabolic Membrane Antenna Structures

open access: yesAerospace
As accuracy of the reflector surface of a space parabolic deployable antenna is an important factor to determine its electrical characteristics (transmission gain and side lobes), mechanical characteristics of parabolic antennas under various internal ...
Yu Hu, Huichao Ji, Wujun Chen
doaj   +1 more source

Performance limitations of observer-based feedback for transient energy growth suppression

open access: yes, 2018
Transient energy growth suppression is a common control objective for feedback flow control aimed at delaying transition to turbulence. A prevailing control approach in this context is observer-based feedback, in which a full-state feedback controller is
Hemati, Maziar S., Yao, Huaijin
core   +1 more source

A Comparison of Double Convex and Double Concave Improved Nyquist Filters

open access: yesAdvances in Electrical and Computer Engineering, 2010
This paper presents a comparative analysis of two families of improved Nyquist filters with a piece-wise parabolic frequency characteristic. Their construction is based on a novel approach and produces ISI-free pulses that shows comparable or better ISI ...
ALEXANDRU, N. D., ALEXANDRU, M. L.
doaj   +1 more source

Electrothermal Actuators for SiO2 Photonic MEMS

open access: yesMicromachines, 2016
This paper describes the design, fabrication and characterization of electrothermal bimorph actuators consisting of polysilicon on top of thick (>10 μ m ) silicon dioxide beams.
Tjitte-Jelte Peters, Marcel Tichem
doaj   +1 more source

Transient analysis of transversely functionally graded Timoshenko beam (TFGTB) in conjunction with finite element method [PDF]

open access: yesArchive of Mechanical Engineering, 2020
In this work, transient and free vibration analyses are illustrated for a functionally graded Timoshenko beam (FGM) using finite element method. The governing equilibrium equations and boundary conditions (B-Cs) are derived according to the principle of ...
Salwan Obaid Waheed Khafaji   +2 more
doaj   +1 more source

Transient response under ultrafast interband excitation of an intrinsic graphene

open access: yes, 2009
The transient evolution of carriers in an intrinsic graphene under ultrafast excitation, which is caused by the collisionless interband transitions, is studied theoretically.
D. Potter   +7 more
core   +1 more source

Novel Genetic Risk Factor Identified for L‐Asparaginase‐Induced Pancreatitis in Pediatric Patients With Cancer

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background L‐asparaginase is a critical component in treatment protocols for pediatric acute lymphoblastic leukemia. Acute pancreatitis reactions can necessitate delays and, in some cases, discontinuation of L‐asparaginase, which compromises outcomes.
Edward J. Raack   +39 more
wiley   +1 more source

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