Results 11 to 20 of about 441,238 (236)
Journal of Agricultural and Resource Economics, 1999 We develop a model to measure the degree of oligopsony power in the beef packing industry, while accommodating variable proportions technology, that can be estimated with fewer data requirements.
Mary K. Muth, Michael K. Wohlgenant
doaj +1 more source
Sensors, 2023 The existing ultrasonic thickness measurement systems require high sampling frequencies for echo signal acquisition, leading to complex circuit designs and high costs.
Wenqiang Gong +5 more
doaj +1 more source
Approximation and analysis of transient responses of a reverberation chamber by pulsed excitation [PDF]
Advances in Radio Science, 2020 Reverberation chambers show transient behaviour when excited with a pulsed signal. The field intensities can in this case be significantly higher than in steady state, which implies that a transient field can exceed predefined limits and render test ...
K. Pasche +4 more
doaj +1 more source
A Dixmier theorem for Poisson enveloping algebras [PDF]
Journal of Algebra, 2021 19 ...
Ualbai Umirbaev, Viktor Zhelyabin
openaire +2 more sources
A note on the envelope theorem
Economics Letters, 2016 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Dassiou, X., Glycopantis, D.
openaire +3 more sources
A Theorem on Free Envelopes [PDF]
Transactions of the American Mathematical Society, 1974 The free envelope of a finite commutative semigroup was defined by Grillet [Trans. Amer. Math. Soc. 149 (1970), 665-682] to be a finitely generated free commutative semigroup
openaire +2 more sources
Electron Mass Predicted From Substructure Stability in Electrodynamical Model
Frontiers in Physics, 2020 Modern physics has characterized spacetime, the interactions between particles, but not the nature of the particles themselves. Previous models of the electron have not specified its substance nor justified its cohesion.
Stéphane Avner, Florence Boillot
doaj +1 more source
Reflected Backward Stochastic Differential Equations Driven by Countable Brownian Motions
Journal of Applied Mathematics, 2013 This paper deals with a new class of reflected backward stochastic differential equations driven by countable Brownian motions. The existence and uniqueness of the RBSDEs are obtained via Snell envelope and fixed point theorem.
Pengju Duan, Min Ren, Shilong Fei
doaj +1 more source
Pontryagin principle and envelope theorem
Communications in Optimization Theory, 2022 We provide an improvement of the maximum principle of Pontryagin of the Optimal Control problems. We establish differentiability properties of the value function of problems of Optimal Control with assumptions as low as possible. Notably, we lighten the assumptions by using Gâteaux and Hadamard differentials.
Blot, Joël, Yilmaz, Hasan
openaire +2 more sources
Symmetries and invariants of the oscillator and envelope equations with time-dependent frequency
Physical Review Special Topics. Accelerators and Beams, 2006 The single-particle dynamics in a time-dependent focusing field is examined. The existence of the Courant-Snyder invariant, a fundamental concept in accelerator physics, is fundamentally a result of the corresponding symmetry admitted by the harmonic ...
Hong Qin, Ronald C. Davidson
doaj +1 more source