Results 21 to 30 of about 1,520 (217)

Smooth Non Linear High Gain Observers for a Class of Dynamical Systems

open access: yesIEEE Access, 2022
High-gain observers are powerful tools for estimating the state of nonlinear systems. However, their design poses several challenges due to the need of dealing with phenomena such as peaking and chattering.
Jose Antonio Gonzalez-Prieto   +1 more
doaj   +1 more source

Functional observability and subspace reconstruction in nonlinear systems

open access: yesPhysical Review Research, 2022
Time-series analysis is fundamental for modeling and predicting dynamical behaviors from time-ordered data, with applications in many disciplines such as physics, biology, finance, and engineering.
Arthur N. Montanari   +3 more
doaj   +1 more source

Controllability and observability of discretized satellite magnetic attitude control system

open access: yesAIMS Mathematics, 2023
In this paper, two different discrete schemes of the second-order linear time-varying system represented by the linearized satellite magnetic attitude control motion equation are obtained by Euler method.
Sihui Liu , Qingdao Huang
doaj   +1 more source

Green when seen? No support for an effect of observability on environmental conservation in the laboratory: a registered report [PDF]

open access: yesRoyal Society Open Science, 2020
Understanding how humans navigate the tension between selfish and prosocial behaviour is central to addressing social dilemmas and several environmental issues.
Florian Lange   +2 more
doaj   +1 more source

Control of unmanned aerial vehicles during fire situation monitoring [PDF]

open access: yesINCAS Bulletin, 2019
The issues of increasing the efficiency of fire situation monitoring are discussed, during which the search for objects of interest is being conducted to organize rescue operations and plan activities to fight the fire and reduce the consequences. Modern
Veniamin N. EVDOKIMENKOV   +3 more
doaj   +1 more source

Controllability and Observability of Fractional Linear Systems with Two Different Orders

open access: yesThe Scientific World Journal, 2014
This paper is concerned with the controllability and observability for a class of fractional linear systems with two different orders. The sufficient and necessary conditions for state controllability and state observability of such systems are ...
Dengguo Xu, Yanmei Li, Weifeng Zhou
doaj   +1 more source

Dysfunctional tetraspanin 7 (TSP‐7) in Caenorhabditis elegans promotes; increases in average life‐ & health‐span, stress‐induced survival and motility

open access: yesFEBS Open Bio, EarlyView.
The C. elegans tetraspanin‐7 (tsp‐7) is a homologue of human CD63, which is a negative regulator of autophagy. The C. elegans strain, tm5761, has a dysfunctional (knockout) tsp‐7 gene. When compared to the wild‐type strain, the tm5761 strain shows increased: life‐ and health‐span; thermotolerance, and stress‐induced locomotion.
Brogan Jones   +2 more
wiley   +1 more source

Soman induces endoplasmic reticulum stress and apoptosis of cerebral organoids via the GRP78‐ATF6‐CHOP signaling pathway

open access: yesFEBS Open Bio, EarlyView.
Cerebral organoids were employed as a novel model to explore the neurotoxicity of soman. Soman inhibited acetylcholinesterase activity, increased cell apoptosis and upregulated endoplasmic reticulum (ER) stress markers glucose‐regulated protein 78 (GRP78), activating transcription factor 6 (ATF6) and C/EBP homologous protein (CHOP).
Yue Wei   +7 more
wiley   +1 more source

A Heuristic Solution Algorithm for a Comprehensive Optimal Phasor Measurement Unit Placement Considering Zero-Injection Buses and Practical Constraints in Power System State Observability Problem

open access: yesIEEE Access
Accurate power system observability relies on the optimal phasor measurement unit (PMU) placement to minimize costs while ensuring complete state observability. However, modeling the effect of zero-injection (ZI) buses remains a key challenge.
Sayed Hamid Hosseini Dolatabadi   +2 more
doaj   +1 more source

On the placing of synchronized vector measurements in network 110 - 330 kV for identification of the Kaliningrad region power system regime

open access: yesE3S Web of Conferences, 2018
A solution is presented for the problem of placing phasor measurement unit to identify the mathematical model of the electric power system in the state space. The criterion for complete observability of the Kalman dynamic system is taken as a basis. As a
Gadzhiev Magomed   +4 more
doaj   +1 more source

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