Results 21 to 30 of about 2,657 (179)

Optimized office lighting advances melatonin phase and peripheral heat loss prior bedtime

open access: yesScientific Reports, 2022
Improving indoor lighting conditions at the workplace has the potential to support proper circadian entrainment of hormonal rhythms, sleep, and well-being.
Marta Benedetti   +4 more
doaj   +1 more source

Single Current Feedback Control Strategy of an LCL Grid-Connected Inverter Based on GI-ESO and Delay Compensation

open access: yesEnergies, 2022
This paper presents a new control structure to improve the performance of LCL grid-connected inverters. First, the conventional linear extended state observer (LESO) has difficulty rejecting periodic disturbances, so the proposed method adds an internal ...
Danyun Li, Dashuang Zhao
doaj   +1 more source

Disturbance Rejection Attitude Control for a Quadrotor: Theory and Experiment

open access: yesInternational Journal of Aerospace Engineering, 2021
In this article, an attitude tracking controller is designed for a quadrotor unmanned aerial vehicle (UAV) subject to lumped disturbances. Firstly, the attitude dynamical model of the quadrotor under external disturbances is established. Subsequently, an
Li Ding   +3 more
doaj   +1 more source

Linear Active Disturbance Rejection Control for DC Bus Voltage Under Low-Voltage Ride-Through at the Grid-Side of Energy Storage System

open access: yesEnergies, 2020
The energy storage inverter system has the characteristics of nonlinearity, strong coupling, variable parameters, and flexible mode switching between parallel and off grid.
Youjie Ma   +5 more
doaj   +1 more source

A Camera Stabilized Platform Based on the Feedforward Strap-Down Control with Approximate Dead-Zone Model and a Compensator with LESO

open access: yesMachines, 2023
A feedforward strap-down control with a compensator base on the linear extended state observer (LESO) is proposed for a miniaturized camera stabilized platform, which reduces the influence of the dead zone in speed regulation and uncertainties in ...
Tianlei Fu   +3 more
doaj   +1 more source

A machine learning approach for mapping the very shallow theoretical geothermal potential

open access: yesGeothermal Energy, 2019
The very shallow geothermal potential (vSGP) is increasingly recognized as a viable resource for providing clean thermal energy in urban and rural areas.
Dan Assouline   +3 more
doaj   +1 more source

The Railway 4.0 Concept – the vision of a digital railway in the Czech Republic (CR)

open access: yesActa Polytechnica CTU Proceedings, 2022
The paper presents a new alternative approach to the modernization of control and safety technologies on the railway network in the Czech Republic, referred to as the "The Railway 4.0 Concept".
Martin Leso
doaj   +1 more source

Rhodium

open access: yes, 2021
Rhodium (Rh), a rare metal belonging to the platinum group elements, occurs naturally at low concentrations in the Earth's crust. It is widely used in the glass, chemical, and electronic industries, but its principal application is as an active catalyst ...
Veruscka Leso   +3 more
core   +1 more source

Iridium

open access: yes, 2021
Iridium (Ir) belongs to the platinum group elements and is one of the rarest metals in the Earth's crust. Due to its good resistance to corrosion, Ir is widely used in the electronic, chemical, and automotive industries.
Veruscka Leso   +3 more
core   +1 more source

Susceptibility to coronavirus (COVID-19) in occupational settings: The complex interplay between individual and workplace factors [PDF]

open access: yes, 2021
In the current coronavirus (COVID-19) pandemic, the definition of risk factors for susceptibility to adverse outcomes seems essential to support public and occupational health policies.
Iavicoli I., Fontana L., Leso V.
core   +1 more source

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