Results 21 to 30 of about 8,224,221 (312)

A physical model for dementia [PDF]

open access: yesPhysica A: Statistical Mechanics and its Applications, 2017
Aging associated brain decline often result in some kind of dementia. Even when this is a complex brain disorder a physical model can be used in order to describe its general behavior. This model is based in first principles. A probabilistic model for the development of dementia is obtained and fitted to some experimental data obtained from the ...
Sotolongo-Costa, O.   +4 more
openaire   +4 more sources

A Physical Model of a Single-Reed Wind Instrument, Including Actions of the Player [PDF]

open access: yes, 2003
For the Physical Modeling Synthesis of wind instruments, we choose to design a model adapted to time domain simulation which takes into account the main part of the physical phenomena, including instrument/player interactions.
DUCASSE, Eric
core   +1 more source

LMI-Based Robust H∞ Control of Photovoltaic Systems with Takagi-Sugeno Fuzzy Models [PDF]

open access: yesEPJ Web of Conferences
This article develops a Takagi-Sugeno (T-S) fuzzy controller for solar systems' Maximum Power Point Tracking (MPPT). The nonlinear dynamics of the PV generator and the Boost converter are described using a continuous-time T-S fuzzy model.
Bengra Khadija   +2 more
doaj   +1 more source

A novel hybrid analytical/iterative method to extract the single-diode model's parameters using Lambert's W-function

open access: yesEnergy Conversion and Management: X, 2023
The evaluation of photovoltaic device performance is based on the I-V characteristic curve. Unfortunately, the data sheets provided by the manufacturers only include data at standard test conditions, which requires the construction of a model capable of ...
Imade Choulli   +8 more
doaj   +1 more source

Models of birdsong (physics)

open access: yesScholarpedia, 2009
Fil: Trevisan, Marcos Alberto. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Fisica. Laboratorio de Sistemas Dinamicos; Argentina. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Ciudad Universitaria. Instituto de Fisica de Buenos Aires.
Trevisan, Marcos Alberto   +1 more
openaire   +2 more sources

Derivation of delay equation climate models using the Mori-Zwanzig formalism [PDF]

open access: yes, 2019
Models incorporating delay have been frequently used to understand climate variability phenomena, but often the delay is introduced through an ad hoc physical reasoning, such as the propagation time of waves.
Dijkstra, Henk A.   +9 more
core   +2 more sources

Influence of Soap Factory Wastewater on the Physical and Mechanical Performance of Concrete

open access: yesDiyala Journal of Engineering Sciences, 2022
The management of water resources is one of the major priorities in all countries of the world and even more so in developing countries such as Cameroon.
Zoyem Gouafo Mathurin   +4 more
doaj   +1 more source

Robust T-S Fuzzy Control Design for Variable-Speed Wind Energy Conversion Systems Using Linear Matrix Inequalities [PDF]

open access: yesEPJ Web of Conferences
This paper proposes a robust state feedback control strategy for variable speed wind energy conversion systems (WECS) within the Takagi-Sugeno fuzzy (TSF) modeling framework.
Aboulkassim Abdeljabar   +4 more
doaj   +1 more source

Terahertz Plasmon Resonances in Two-Dimensional Electron Systems: Modeling Approaches [PDF]

open access: yes, 2019
Known approaches to modeling terahertz plasmons in two-dimensional electron systems may differ significantly in their assumptions. There has, however, been little effort to analyze the differences between and application of different models to the same ...
Zonetti, Simone   +7 more
core   +1 more source

Factors Governing the Chemical Stability and NMR Parameters of Uracil Tautomers and Its 5-Halogen Derivatives

open access: yesMolecules, 2020
We report on the density functional theory (DFT) modelling of structural, energetic and NMR parameters of uracil and its derivatives (5-halogenouracil (5XU), X = F, Cl, Br and I) in vacuum and in water using the polarizable continuum model (PCM) and the ...
Kacper Rzepiela   +3 more
doaj   +1 more source

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