Results 11 to 20 of about 1,039,132 (290)

An empirical extremum principle for the hill coefficient in ligand-protein interactions showing negative cooperativity. [PDF]

open access: yesBiophys J, 2005
The Hill coefficient (nH) is a central parameter in the study of ligand-protein interactions, which measures the degree of cooperativity between subunits that bind the ligand in multisubunit proteins.
Abeliovich H.
europepmc   +2 more sources

Theoretical Analysis for Heat Transfer Optimization in Subcritical Electrothermal Energy Storage Systems

open access: yesEnergies, 2017
Electrothermal energy storage (ETES) provides bulk electricity storage based on heat pump and heat engine technologies. A subcritical ETES is described in this paper.
Peng Hu   +3 more
doaj   +1 more source

Abnormality in the Theory of Necessary Optimality Conditions

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2017
The problems of existence, non-uniqueness, abnormality of solutions arising from the using of necessary optimality conditions are discussed in terms of the extension principle and sufficient optimality conditions. Simple examples are used.
V.I. Gurman, M.M. Khrustalev
doaj   +1 more source

General principle of maximum pressure in stationary flows of inviscid gas [PDF]

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2022
Within the framework of the Euler equations, the possibility of achieving extreme pressure values at the inner point of a stationary flow of a nonviscous gas is considered. The flow can be non-barotropic.
Grigory B. Sizykh
doaj   +1 more source

The Maximum Entropy Production Principle and Linear Irreversible Processes

open access: yesEntropy, 2010
It is shown that Onsager’s principle of the least dissipation of energy is equivalent to the maximum entropy production principle. It is known that solutions of the linearized Boltzmann equation make extrema of entropy production.
Milan Brumen   +5 more
doaj   +1 more source

Maximum Principle for Nonlinear Fractional Differential Equations with the Hilfer Derivative

open access: yesFractal and Fractional, 2023
In this paper, two significant inequalities for the Hilfer fractional derivative of a function in the space ACγ([0,b],Rn), 0≤γ≤1 are obtained. We first verified the extremum principle for the Hilfer fractional derivative.
Abu Bakr Elbukhari, Zhenbin Fan, Gang Li
doaj   +1 more source

On complementary extremum principles

open access: yesJournal of Mathematical Analysis and Applications, 1978
AbstractImportant complementary extremum principles are generated without recourse to general variational theory. The results are illustrated by an application to a class of boundary value problems in Magnetohydrodynamics.
Swetits, J., Rogers, C.
openaire   +2 more sources

О ЕДИНСТВЕННОСТИ РЕШЕНИЯ КРАЕВОЙ ЗАДАЧИ ДЛЯ УРАВНЕНИЯ СМЕШАННОГО ТИПА С ГИПЕРБОЛИЧЕСКИМ ВЫРОЖДЕНИЕМ ПОРЯДКА

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2016
В работе доказывается единственность решения краевой задачи для уравнения смешанного эллиптико-гиперболического типа второго ...
Кудаева, З.В.
doaj   +1 more source

Parameter identification of direct‐drive permanent magnet synchronous generator based on EDMPSO‐EKF

open access: yesIET Renewable Power Generation, 2022
Aiming at the problem that extended Kalman filter (EKF) is difficult to determine the appropriate system and measurement noise matrices in parameter identification of direct‐drive permanent magnet synchronous generator (D‐PMSG), a parameter ...
Qianghui Xiao   +3 more
doaj   +1 more source

Extremum Seeking Control for Energy Optimization of Vapor Compression Systems [PDF]

open access: yes, 2012
In this paper, an energy optimizing extremum seeking controller is developed for vapor compression systems (VCS) that automatically discovers sets of inputs that minimizes the energy consumption while the machine is in operation.
Laughman, Christopher, Burns, Daniel
core   +1 more source

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