Results 61 to 70 of about 141,318 (305)

Adaptive Observer for Coupled Wave PDE and Infinite ODE With Sampled Data and Unknown Input: Application to Brain Hemodynamics Estimation

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This article proposes a convergent adaptive observer for a damped wave PDE and an infinite‐dimensional ODE coupled in cascade using sampled‐in‐space ODE state measurements. The proposed observer estimates the distributed states of the PDE and ODE along with unknown PDE parameters and spatial input.
Zehor Belkhatir   +2 more
wiley   +1 more source

РОЗРАХУНОК ЕЛЕКТРИЧНИХ ПОЛІВ В ЕЛЕМЕНТАХ КОНСТРУКЦІЇ КОМБІНОВАНОГО ВИСОКОВОЛЬТНОГО ВИМІРЮВАЛЬНОГО ТРАНСФОРМАТОРА СТРУМУ І НАПРУГИ

open access: yesElektrotehnìka ta Elektroenergetika, 2007
З використанням програми FEMM виконаний розрахунок електричних полів в ізоляційному проміжку комбінованого елегазового високовольтного вимірювального трансформатора струму і напруги.
D. A. Saveliev, E. V. Boyarintseva
doaj  

Transmission Line Sag Measurement and Simulation Research Based on Non-Contact Electric Field Sensing

open access: yesSensors, 2022
Sag is an important indicator of the operational health of a transmission line, and its timely measurement is of great significance to maintain the stability and reliability of power systems.
Jinhua Zuo   +5 more
doaj   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Theoretical studies of multi-electrode sensor of components of electric field intensity vector in form of square plate of conductive material [PDF]

open access: yesОмский научный вестник, 2019
The article examines a multi-element flat sensor of the components of the intensity vector of a low-frequency electric field manufactured using new technologies and capable of being integrated into modern gadgets. The sensor is suitable for measuring
S. V. Biryukov, A. V. Tyukin
doaj   +1 more source

Measuring the electric fields in space

open access: yes地球与行星物理论评, 2021
Measuring electric fields in the space environments of the Earth and other planets helps us to understand the electric field structures and plasma waves in the space. An addition usage of data from electric field measurements is to derive the cold ions in the magnetosphere which are invisible to ordinary energy spectrometers.
Kun Li, Jun Cui, Yong Wei
openaire   +1 more source

Light‐Assisted 3D Printing Techniques and Photocrosslinking Strategies: Recent Advances in Musculoskeletal Tissue Engineering

open access: yesAdvanced Engineering Materials, EarlyView.
In this review, the current state of light‐assisted 3D printing as it pertains to engineering musculoskeletal tissues including bone, cartilage, skeletal muscle, tendon, and ligaments is summarized. Common printing techniques, photoreactive materials, and study design choices are compiled and reviewed.
Meagan Morgan, Bin Zhang, Roger Narayan
wiley   +1 more source

An improved pulsed electroacoustic system for space charge measurement under AC conditions [PDF]

open access: yes, 2010
In this paper, an improved space charge measurement system based on the pulsed electro acoustic technique (PEA) is presented. The new system gives an essential way to examine the role of space charge in electrical aging process under AC conditions.
Z. Xu   +8 more
core   +1 more source

Two‐Photon Voltmeter for Measuring a Molecular Electric Field [PDF]

open access: yesAngewandte Chemie, 2015
AbstractWe present a new approach for determining the strength of the dipolar solute‐induced reaction field, along with the ground‐ and excited‐state electrostatic dipole moments and polarizability of a solvated chromophore, using exclusively one‐photon and two‐photon absorption measurements.
Rebane, Aleksander   +5 more
openaire   +3 more sources

Variable Stiffness Flexure Structures Enabled by Phase‐Change Gallium and Adhesive Interfacial Locking for Soft Robotic Applications

open access: yesAdvanced Engineering Materials, EarlyView.
A flexure‐based variable stiffness structure is developed by integrating phase‐change modulation and adhesive interfacial locking of gallium. The design enables a wide stiffness variability, transitioning from soft, flexible behavior to rigid, load‐supporting performance.
Sungjin Kim   +2 more
wiley   +1 more source

Home - About - Disclaimer - Privacy