• Aucun résultat trouvé

Cut-off

Regularization estimates and Cauchy theory for inhomogeneous Boltzmann equation for hard potentials without cut-off

Regularization estimates and Cauchy theory for inhomogeneous Boltzmann equation for hard potentials without cut-off

... Let us underline the fact that Theorem 1.1 largely improves previous results on the Cauchy theory associated to the Boltzmann equation without cut-off for hard potentials in a perturbative setting. Indeed, ...

70

Regularization estimates and Cauchy theory for inhomogeneous Boltzmann equation for hard potentials without cut-off

Regularization estimates and Cauchy theory for inhomogeneous Boltzmann equation for hard potentials without cut-off

... References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 1. Introduction 1.1. The model. In the present paper, we investigate the Cauchy theory and the asymp- totic behavior of ...

69

Exponential convergence to equilibrium for the homogeneous Boltzmann equation for hard potentials without cut-off

Exponential convergence to equilibrium for the homogeneous Boltzmann equation for hard potentials without cut-off

... where λ > 0 is defined in Theorem 1.4. We improve a polynomial result of Villani [40] and generalize to our context similar exponential results known for simplified models. Mouhot in [32] proved such a result for the ...

24

Defining reference interval of haemoglobin in early postpartum: the actual cut-off for postpartum anaemia

Defining reference interval of haemoglobin in early postpartum: the actual cut-off for postpartum anaemia

... Despite the few data existing in literature, the results were comparable to other studies. Low haemoglobin reference interval agrees with Breymann 2010 who mentions that the nadir of postpartum haemoglobin levels is ...

36

Evaluating suggested lengths used for cut-off planes using the effective length calculation procedure

Evaluating suggested lengths used for cut-off planes using the effective length calculation procedure

... There are different methods being used to quantify the thermal performance of building assemblies, including but not limited to, hand calculations (ASHRAE, 2017) (National Research Council Canada, 2011), Guarded Hot Box ...

8

Analysis of the acoustic cut-off frequency and high-frequency peaks in six Kepler stars with stochastically excited pulsations

Analysis of the acoustic cut-off frequency and high-frequency peaks in six Kepler stars with stochastically excited pulsations

... Gravito-acoustic modes in the Sun and other stars propagate in resonant cavities with a frequency below a given limit known as the cut-o ff frequency. At higher frequencies, waves are no longer trapped in the ...

16

From Newton's law to the linear Boltzmann equation without cut-off

From Newton's law to the linear Boltzmann equation without cut-off

... A huge number of microscopic contexts has been investigated (see the book by Spohn [ 16 ] for a survey on this topic). What we intend to do here is to obtain a complete derivation of the linear Boltzmann equation without ...

51

Implementation of long-wavelength cut-off filters based on critical angle

Implementation of long-wavelength cut-off filters based on critical angle

... infrared cut-off filters with extended transmis- sion and rejection regions that are based on the use of the critical angle, the dispersion of refractive indices, and on thin-film interference were not very ...

8

Confinement and cut-off: A model for the Pion Quark Distribution Function

Confinement and cut-off: A model for the Pion Quark Distribution Function

... The pion structure function is investigated in a simple pseudo-scalar coupling model of pion and constituent quark fields. The imaginary part of the forward Compton scattering amplitude is evaluated. We show that the ...

3

Aspect sensitivity of VHF radar echoes observed in the middle and upper troposphere during the passage of a cut-off low

Aspect sensitivity of VHF radar echoes observed in the middle and upper troposphere during the passage of a cut-off low

... Time-height sections of aspect sensitivity parameters observed by the VHF radar: (a) vertical echo power Pv (decibels relative to an arbitrary reference power level); (b) ver[r] ...

13

On the cut-off phenomenon in some queueing systems

On the cut-off phenomenon in some queueing systems

... L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignemen[r] ...

15

Arctic cut-off high drives the poleward shift of a new Greenland melting record

Arctic cut-off high drives the poleward shift of a new Greenland melting record

... Here, using reanalysis data and the outputs of a regional climate model, we show that the persistence of an exceptional atmospheric ridge, centred over the Arctic Ocean, was responsible [r] ...

6

On the cut-off phenomenon for the transitivity of randomly generated subgroups

On the cut-off phenomenon for the transitivity of randomly generated subgroups

... the cut-off occurs at the same time for both events suggests that a fixed point is the last resort against transitivity in this ...the cut-off phenomenon for the convergence to equilibrium in the total ...

39

Evaluating suggested lengths used for cut-off planes using the effective length calculation procedure

Evaluating suggested lengths used for cut-off planes using the effective length calculation procedure

... Hand calculations (ASHRAE, 2017) (National Research Council Canada, 2011) • Isothermal planes, Parallel path, Modified Zone, Thermal transmittance. Guarded Hot Box testing (ASTM C-1363, [r] ...

16

A Menger-like property of tree-cut width

A Menger-like property of tree-cut width

... otherwise, where d denotes the minimal distance between a node of aT b and a node of the T -path of e. For every set F ⊆ E(G) we set d a,b (F ) = P e∈F d a,b (e). Let us fix a minimal non-leanness certificate (k, a, b, ...

21

From graph orientation to the unweighted maximum cut

From graph orientation to the unweighted maximum cut

... The paper is organized as follows. We introduce some new mixed integer linear programming formulations for the maximum cut problem based on graph orientations (Section 2). A semidefinite programming relaxation is ...

15

Towards Nonlinear Photonic Wires in Z-cut LiNbO3

Towards Nonlinear Photonic Wires in Z-cut LiNbO3

... Photonic wires fabrication and characterization. The photonic wires were realized using a standard UV lithography process allowing fabricating strip waveguides with a width varying from 1 to 2 !m. The first waveguides ...

2

Transport of hydrate slurry at high water cut

Transport of hydrate slurry at high water cut

... The images provided by the PVM probe allow observing the differences in the emulsion and crystallization with different water cut. From them we can better visualize the process of crystallization. The images show ...

12

Transport of hydrate slurry at high water cut

Transport of hydrate slurry at high water cut

... Experimental flow loop investigations of gas hydrate formation in high water cut systems. Chemical Engineering Science. vol. 97. 2013. p. 198-209. Greaves D. Boxall J. Mullingan J. Sloan ED. Koh CA. Hydrate ...

2

A rough-cut capacity planning model with overlapping

A rough-cut capacity planning model with overlapping

... Recognizing the need of practitioners to better support the project planning func- tion in the early phases of projects, this paper proposes an exact RCCP model that determines the order[r] ...

31

Show all 598 documents...

Sujets connexes