Zobrazeno 1 - 10
of 2 216
pro vyhledávání: '"Pereira, R. P. A."'
We carry out an in-depth analysis of a recently introduced vortex gas model of homogeneous and isotropic turbulence. Direct numerical simulations are used to provide a concrete physical interpretation of one of the model's constituent fields: the deg
Externí odkaz:
http://arxiv.org/abs/2312.01155
Publikováno v:
iForest - Biogeosciences and Forestry, Vol 17, Iss 1, Pp 229-235 (2024)
Gap formations in the forest canopy have natural causes, such as bad weather, and anthropic ones, such as sustainable selective extraction of trees and illegal logging, which can already be detected through orbital remote sensing. However, the Amazon
Externí odkaz:
https://doaj.org/article/194a6f5634f342b1bfa96e62ba95ff84
Autor:
Aldoroty, L., Wang, L., Hoeflich, P., Yang, J., Suntzeff, N., Aldering, G., Antilogus, P., Aragon, C., Bailey, S., Baltay, C., Bongard, S., Boone, K., Buton, C., Copin, Y., Dixon, S., Fouchez, D., Gangler, E., Gupta, R., Hayden, B., Karmen, Mitchell, Kim, A. G., Kowalski, M., Küsters, D., Léget, P. -F., Mondon, F., Nordin, J., Pain, R., Pecontal, E., Pereira, R., Perlmutter, S., Ponder, K. A., Rabinowitz, D., Rigault, M., Rubin, D., Runge, K., Saunders, C., Smadja, G., Suzuki, N., Tao, C., Thomas, R. C., Vincenzi, M.
Publikováno v:
The Astrophysical Journal, 948:10 (15pp), 2023 May 1
We apply the color-magnitude intercept calibration method (CMAGIC) to the Nearby Supernova Factory SNe Ia spectrophotometric dataset. The currently existing CMAGIC parameters are the slope and intercept of a straight line fit to the first linear regi
Externí odkaz:
http://arxiv.org/abs/2210.06708
Autor:
Stein, George, Seljak, Uros, Bohm, Vanessa, Aldering, G., Antilogus, P., Aragon, C., Bailey, S., Baltay, C., Bongard, S., Boone, K., Buton, C., Copin, Y., Dixon, S., Fouchez, D., Gangler, E., Gupta, R., Hayden, B., Hillebrandt, W., Karmen, M., Kim, A. G., Kowalski, M., Kusters, D., Leget, P. F., Mondon, F., Nordin, J., Pain, R., Pecontal, E., Pereira, R., Perlmutter, S., Ponder, K. A., Rabinowitz, D., Rigault, M., Rubin, D., Runge, K., Saunders, C., Smadja, G., Suzuki, N., Tao, C., Thomas, R. C., Vincenzi, M.
We construct a physically-parameterized probabilistic autoencoder (PAE) to learn the intrinsic diversity of type Ia supernovae (SNe Ia) from a sparse set of spectral time series. The PAE is a two-stage generative model, composed of an Auto-Encoder (A
Externí odkaz:
http://arxiv.org/abs/2207.07645
Eddy-Viscous Modeling and the Topology of Extreme Circulation Events in Three-Dimensional Turbulence
We discuss the role of particular velocity field configurations -- instantons, for short -- which are supposed to dominate the flow during the occurrence of extreme turbulent circulation events. Instanton equations, devised for the stochastic hydrody
Externí odkaz:
http://arxiv.org/abs/2206.14533
A reconfigurable microwave reflectarray metasurface (MS) is investigated for beamforming applications. The reflected beam direction is changed by applying external dc voltages, which create a reflection phase gradient on the structure. The studied MS
Externí odkaz:
http://arxiv.org/abs/2205.14671
Autor:
Rubin, David, Aldering, G., Antilogus, P., Aragon, C., Bailey, S., Baltay, C., Bongard, S., Boone, K., Buton, C., Copin, Y., Dixon, S., Fouchez, D., Gangler, E., Gupta, R., Hayden, B., Hillebrandt, W., Kim, A. G., Kowalski, M., Kuesters, D., Leget, P. -F., Mondon, F., Nordin, J., Pain, R., Pecontal, E., Pereira, R., Perlmutter, S., Ponder, K. A., Rabinowitz, D., Rigault, M., Runge, K., Saunders, C., Smadja, G., Suzuki, N., Tao, C., Taubenberger, S., Thomas, R. C., Vincenzi, M., Factory, The Nearby Supernova
We calibrate spectrophotometric optical spectra of 32 stars commonly used as standard stars, referenced to 14 stars already on the HST-based CALSPEC flux system. Observations of CALSPEC and non-CALSPEC stars were obtained with the SuperNova Integral
Externí odkaz:
http://arxiv.org/abs/2205.01116
Autor:
Moriconi, L., Pereira, R. M.
Recent numerical explorations of extremely intense circulation fluctuations at high Reynolds number flows have brought to light novel aspects of turbulent intermittency. Vortex gas modeling ideas, introduced alongside such developments, have led to a
Externí odkaz:
http://arxiv.org/abs/2204.12862
Most non-safety applications deployed in Vehicular Ad-hoc Network (VANET) use vehicle-to-infrastructure (V2I) and I2V communications to receive various forms of content such as periodic traffic updates, advertisements from adjacent road-side units (R
Externí odkaz:
http://arxiv.org/abs/2112.02692
Publikováno v:
Phys. Rev. B 105, 024430 (2022)
The spin-1/2 transverse field two-leg Ising ladder with nearest-neighbor exchange and plaquette four-spin interaction $J_{4}$ is studied analytically and numerically with the density matrix renormalization group approach. The quantum phase diagram in
Externí odkaz:
http://arxiv.org/abs/2111.11404