A MONTE CARLO RECTANGLE PACKING ALGORITHM FOR IDENTIFYING LIKELY SPATIAL DISTRIBUTIONS OF FINAL CLOSURE CAP SUBSIDENCE IN THE E-AREA LOW-LEVEL WASTE FACILITY

2019 ◽  
Author(s):  
Thomas Danielson
Keyword(s):  
Monte Carlo ◽  
Spatial Distributions ◽  
Rectangle Packing ◽  
Low Level ◽  
Packing Algorithm ◽  
Waste Facility ◽  
Final Closure

Assessing the influence of complex terrain on severe convective environments in northeastern Alabama

2021 ◽  
Author(s):  
Branden Katona ◽  
Paul Markowski
Keyword(s):  
Boundary Layer ◽  
Complex Terrain ◽  
Wind Shear ◽  
Vertical Wind Shear ◽  
Vertical Wind ◽  
Spatial Distributions ◽  
Convective Storm ◽  
Self Organizing Maps ◽  
Low Level ◽  
Wind Regimes

AbstractStorms crossing complex terrain can potentially encounter rapidly changing convective environments. However, our understanding of terrain-induced variability in convective stormenvironments remains limited. HRRR data are used to create climatologies of popular convective storm forecasting parameters for different wind regimes. Self-organizing maps (SOMs) are used to generate six different low-level wind regimes, characterized by different wind directions, for which popular instability and vertical wind shear parameters are averaged. The climatologies show that both instability and vertical wind shear are highly variable in regions of complex terrain, and that the spatial distributions of perturbations relative to the terrain are dependent on the low-level wind direction. Idealized simulations are used to investigate the origins of some of the perturbations seen in the SOM climatologies. The idealized simulations replicate many of the features in the SOM climatologies, which facilitates analysis of their dynamical origins. Terrain influences are greatest when winds are approximately perpendicular to the terrain. In such cases, a standing wave can develop in the lee, leading to an increase in low-level wind speed and a reduction in vertical wind shear with the valley lee of the plateau. Additionally, CAPE tends to be decreased and LCL heights are increased in the lee of the terrain where relative humidity within the boundary layer is locally decreased.

scholarly journals Simulating Low-Level Laser Propagation From Skin Surface To Lumbar Disc, Knee, Femur and Prostate Gland By Monte Carlo Method

2020 ◽  
Author(s):  
Trinh Tran Hong Duyen ◽  
Tran Anh Tu
Keyword(s):  
Monte Carlo ◽  
Laser Therapy ◽  
Prostate Gland ◽  
Skin Surface ◽  
Low Level Laser Therapy ◽  
Low Level ◽  
Laser Propagation ◽  
Low Level Laser ◽  
Level Laser ◽  
Simulation Results

Nowadays, the uses of laser and optics in the medical areas are extremely vivid, especially low-level laser therapy. The light with the wavelength of 633 nm to 1200 nm could penetrate and propagate deep in biological tissue. To develop the low-level laser therapy device, optimizing light delivery is critical to accurately stimulate the biological effects inside the biological tissue. Nevertheless, each form of the tissues at each zone on the body had various refractive optic, absorption, scattering, and anisotropy coefficients. This paper describes the simulation results of low-level laser propagation from skin surface at the lower spine, the knee, the femur and the prostate gland with four wavelengths (633 nm, 780 nm, 850 nm, and 940 nm) by the Monte Carlo method. These simulation results are the base for developing the low-level laser therapy device, that could be used in clinical for treating the fracture, knee osteoarthritis, spinal degeneration, and benign prostatic hypertrophy.

The 4He Trimer: Structure and Energetics of a Very Unusual Molecule

2003 ◽  
Vol 68 (1) ◽  
pp. 1-22 ◽  
Author(s):  
Cono Di Paola ◽  
Franco A. Gianturco ◽  
Gerardo Delgado-Barrio ◽  
Salvador Miret-Artés ◽  
Pablo Villarreal
Keyword(s):  
Monte Carlo ◽  
Stochastic Analysis ◽  
Binding Energies ◽  
Geometric Constraints ◽  
Spatial Density ◽  
Spatial Distributions ◽  
Diffusion Monte Carlo ◽  
Density Distributions ◽  
Total Binding ◽  
Full Interaction

The 4He3 weakly interacting system is analysed by constructing the full interaction as a sum of two-body (2B) potentials chosen among the most recent proposals from the literature. The spatial density distributions of the three bound atoms are obtained using a diffusion Monte Carlo (DMC) algorithm and a stochastic analysis under specific geometric constraints is carried out with the resulting densities in order to recover a more conventional structural picture for such floppy system. The total binding energies were obtained with the chosen potentials analysed in the present work, using the DMC algorithm, and are compared with previous published results. The ensuing spatial distributions are analysed in some detail to select the dominant structures from a conventional triangular description of this very floppy molecule.

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