Results 31 to 40 of about 504,506 (305)

Estimating Dynamic Load Parameters from Ambient PMU Measurements

open access: yes, 2017
In this paper, a novel method to estimate dynamic load parameters via ambient PMU measurements is proposed. Unlike conventional parameter identification methods, the proposed algorithm does not require the existence of large disturbance to power systems,
Wang, Xiaozhe
core   +1 more source

Microgyroscopes with dynamic disturbance rejection [PDF]

open access: yesSPIE Proceedings, 2001
This paper reports a novel micromachined gyroscope design with inherent disturbance-rejection capabilities. The proposed approach is based on increasing the degrees-of-freedom (DOF) of the oscillatory system by the use of two independently oscillating proof masses. Utilizing dynamical amplification in the 4-DOF system, inherent disturbance rejection is
Cenk Acar, Andrei M. Shkel
openaire   +1 more source

Study on deformation law of roadway surrounding rock under dynamic disturbance

open access: yesMeikuang Anquan
The surrounding rock is in a state of high stress during deep mining of coal mine, and the dynamic disturbance may lead to the instability of the surrounding rock and even rock burst.
Mingkun LUO   +8 more
doaj   +1 more source

Performance tradeoffs of dynamically controlled grid-connected inverters in low inertia power systems

open access: yes, 2017
Implementing frequency response using grid-connected inverters is one of the popular proposed alternatives to mitigate the dynamic degradation experienced in low inertia power systems.
Jiang, Yan   +2 more
core   +1 more source

Comparing coastal storm impact to decadal change in barrier island ecosystems [PDF]

open access: yes, 2020
Highly dynamic coastal systems respond to disturbance events with a combination of topographic and vegetative changes. Sea level rise impacts on barrier islands have been quantified, but storm effects on vegetation are limited. Here we quantified barrier
Tuley, Philip A
core   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

Research of control algorithm of active disturbance rejection for permanent magnet linear synchronous motor

open access: yesGong-kuang zidonghua, 2014
For characteristics of permanent magnet linear synchronous motor that it is sensitive to external disturbance and parameter variation, an improved active disturbance rejection control algorithm was proposed based on traditional active disturbance ...
BAO Guangqing, DANG Chaoliang
doaj   +1 more source

Strength Weakening Effect of High Prestatically Loaded Marble Subjected to Low-Frequency Dynamic Disturbance under Point Load

open access: yesShock and Vibration, 2021
The deep high prestatically loaded rock is often subjected to low-frequency dynamic disturbance and exhibits unusual strength characteristics, and thus, it is important to investigate the strength characteristics under the coupling effect of prestatic ...
Wuxing Wu, Fengqiang Gong
doaj   +1 more source

Theory of creep disturbance effect of rock and its application in support of deep dynamic engineering

open access: yesYantu gongcheng xuebao, 2021
The surrounding rock of deep engineering shows obvious creep characteristics. When it is affected by the external cyclic impact load with medium-grade energy (impacting energy of 103~105 J), a long-term large deformation dynamic disaster will occur ...
HUANG Wan-peng , SUN Yuan-xiang , CHEN Shao-jie
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

open access: yesFEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe   +3 more
wiley   +1 more source

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