Results 91 to 100 of about 10,020 (213)

Mechanism and Data-Driven Fusion SOC Estimation

open access: yesEnergies
An accurate assessment of the state of charge (SOC) of electric vehicle batteries is critical for implementing frequency regulation and peak shaving. This study proposes mechanism- and data-driven SOC fusion calculation methods.
Aijun Tian   +4 more
doaj   +1 more source

Non-LTE line formation for heavy elements in four very metal-poor stars

open access: yes, 2007
Stellar parameters and abundances of Na, Mg, Al, K, Ca, Sr, Ba, and Eu are determined for four very metal-poor stars (-2.66 < [Fe/H] < -2.15) based on non-LTE line formation and analysis of high-resolution (R ~60000 and 90000) high signal-to-noise (S/N >
Aldenius   +114 more
core   +1 more source

Amplifier‐Based Programmable Metasurface for Bidirectional Full Polarization Enhancement

open access: yesSmall Structures, Volume 6, Issue 11, November 2025.
An amplifier‐based programmable metasurface is proposed to enhance bidirectional propagation of various polarized electromagnetic waves. The metasurface incorporates patch scatterers, reconfigurable phase shifters, and negative resistors to manipulate wave direction and improve wireless communication coverage. The Class‐E reflection amplifier minimizes
Xin Wang   +5 more
wiley   +1 more source

Electrical Characterization and Modeling of a Gelatin/Graphene System

open access: yesAdvances in Condensed Matter Physics, 2015
A gelatin/graphene composite has been analyzed by means of current density-voltage and the electrical impedance measurements. The DC electrical behavior has been interpreted in terms of an equivalent Thévenin model taking into account the open circuit ...
Giovanni Landi   +3 more
doaj   +1 more source

Battery State-of-Charge Estimation with Extended Kalman-Filter using Third-Order Thevenin Model

open access: yesTELKOMNIKA (Telecommunication Computing Electronics and Control), 2015
Lithium-ion battery has become the mainstream energy storage element of the electric vehicle. One of the challenges in electric vehicle development is the state-of-charge estimation of battery. Accurate estimation of state-of-charge is vital to indicate the remaining capacity of the battery and it will eventually maximize the battery performance and ...
Low Wen Yao   +3 more
openaire   +2 more sources

Enhanced Lithium‐Ion Battery Parameter Estimation and SOC Prediction via Variable Forgetting Factor Bi‐Loop Recursive Least Squares

open access: yesEnergy Science &Engineering, Volume 13, Issue 10, Page 4933-4943, October 2025.
ABSTRACT The reliability of parameter accuracy in lithium‐ion battery models plays a crucial role in the efficiency of state‐of‐charge (SOC) estimation methods that employ model‐based strategies. To address the limitations of traditional recursive least squares (RLS) algorithms in tracking dynamic battery characteristics, This paper introduces a bi ...
Wei Xia   +3 more
wiley   +1 more source

Performance Improvement in Passive Backscatter Based RFID System with Low DCR Modulations [PDF]

open access: yes, 2014
This paper presents application of the low Duty Cycle Ratio (DCR) modulations: isochronous Digital Pulse Position Modulation (DPPM) and anisochronous Digital Pulse Interval Modulation (DPIM) in backscatter based passive RFID communication system.
Svedek, T., Vinko, D., Zagar, D.
core   +1 more source

X-ray Emission from the Binary Central Stars of the Planetary Nebulae HFG 1, DS 1, and LoTr 5

open access: yes, 2010
Close binary systems undergoing mass transfer or common envelope interactions can account for the morphological properties of some planetary nebulae. The search for close binary companions in planetary nebulae is hindered by the difficulty of detecting ...
Arnaud   +43 more
core   +1 more source

A STATIC AND DYNAMIC TECHNIQUE CONTINGENCY RANKING ANALYSIS IN VOLTAGE STABILITY ASSESSMENT [PDF]

open access: yes, 2013
The objective of the research is to compare between technique for determine the weak bus of the power system using static and dynamic contingency ranking analysis. Identification of the weak bus is very important for providing
Nizam , Muhammad
core  

RF bifurcation of a Josephson junction: microwave embedding circuit requirements

open access: yes, 2006
A Josephson tunnel junction which is RF-driven near a dynamical bifurcation point can amplify quantum signals. The bifurcation point will exist robustly only if the electrodynamic environment of the junction meets certain criteria.
A. H. Nayfeh   +13 more
core   +1 more source

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