Results 111 to 120 of about 501,635 (311)

Income Thresholds and Income Classes [PDF]

open access: yes
This paper proposes a method for detecting income classes based on the change-point problem. There is an increasing demand for such a method in the literature. Computation of polarization indices requires a pre-grouping of the incomes. Similarly, indices
Conchita D'Ambrosio   +2 more
core  

Phase shift bandwidth and scan range in microstrip arrays by the element frequency tuning

open access: yes, 2006
In this paper, the far-field phase shift properties of microstrip patch antennas are investigated. It is shown that, similar to reflectarrays, the resonant nature of microstrip patches can be used to change the phase of the radiated field.
Sharma, SK   +3 more
core   +1 more source

Experimental Study of Thermal Effect of Lacquer Coating for PV-Trombe Wall System Combined with Phase Change Material in Summer

open access: yesInternational Journal of Photoenergy, 2019
This paper proposes a novel PV-Trombe wall system combined with phase-change material, which is named as PV-PCM-Trombe system. The work mainly experimentally studies the effectiveness and characteristics of using phase change materials to improve the ...
Chenglong Luo   +5 more
doaj   +1 more source

Adaptive Kalman Estimation of Phase Holdup of Water-Continuous Oil-Water Two-Phase Flow

open access: yesIEEE Access, 2017
Phase holdup measurement of the two-phase flow is of significance in industrial process. Accurate and real-time measurement of phase holdup is a critical problem requiring urgent solutions.
Guangzhi Fu, Chao Tan, Hao Wu, Feng Dong
doaj   +1 more source

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

open access: yesAdvanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice   +2 more
wiley   +1 more source

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

open access: yesAdvanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm   +3 more
wiley   +1 more source

Evaluating Energy Absorption Performance of Filled Lattice Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney   +2 more
wiley   +1 more source

Experimental Study on Dual-PCM Gradient Thermal Management for Lithium-Ion Batteries with Wide Temperature Adaptability

open access: yesZhileng xuebao
In this study, a new method for passive thermal management of lithium-ion batteries based on paraffin/expanded graphite/bamboo charcoal composite bilayer phase change materials is proposed.
Wang Tieying   +6 more
doaj  

Local Controllability in the Problem with Phase Space Change

open access: yesRUDN Journal of Mathematics, Information Sciences and Physics, 2017
This work researches the problem of controllability with phase space change. Nowadays theinterest to the controllability problems with variable structure is on the rise due to the continuouswidening of their practical application space. The tasks of this sort are appearing in physics,biology as well as in economics.
I.S. Maksimova, V.N. Rozova
openaire   +2 more sources

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