Results 11 to 20 of about 130,626 (265)

Okinawa Trough geophysical and topographic modeling by GDAL utilities and GRASS GIS [PDF]

open access: yesPodzemni Radovi, 2021
This paper presents using GDAL utilities and GRASS GIS for topographic analysis of the raster grids based on GEBCO DEM as NetCDF file at 15 arc-second intervals.
Lemenkova Polina
doaj   +1 more source

Analysis of Influence of Pipeline Internal Surface Roughness on Flow Rate Measured by Means of Standard Pressure Differential Devices

open access: yesEnergy Engineering and Control Systems, 2022
The paper presents the analysis of scientific and technical sources on the influence of constructive features of pressure differential flowmeters on flow rate measurement error. According to the research results, the significant surface roughness of pipe
Fedir Matiko   +3 more
doaj   +1 more source

ROUGH RINGS, ROUGH SUBRINGS, AND ROUGH IDEALS

open access: yesJournal of Fundamental Mathematics and Applications (JFMA), 2022
The basic concept in algebra that is set theory can be expanded into rough sets. Basic operations on the set such as intersections, unions, differences, and complements can still apply to rough sets. In addition, one of the applications of rough sets is the use of rough matrices in decision making.
Fakhry Asad Agusfrianto   +2 more
openaire   +1 more source

AISI 1045 Steel Flat Surfaces Machining Using the Magneto-Abrasive Method [PDF]

open access: yesЖурнал інженерних наук, 2020
The results of the study of using the end-type heads based on permanent magnets for polishing flat surfaces of ferromagnetic parts on standard metal-working equipment are presented in the work.
Maiboroda V. S.   +3 more
doaj   +1 more source

Analysis of undrained non-isothermal shear behavior of pile-soil interface

open access: yesShenzhen Daxue xuebao. Ligong ban, 2022
In order to study the effects of interface roughness, temperature change and over consolidation ratio (OCR) on pile-soil interface shear strength, pore pressure response and volume change, the direct shear box was modified by strain direct shear ...
WANG Xiaoqiang   +2 more
doaj   +1 more source

Volatility is Rough [PDF]

open access: yesSSRN Electronic Journal, 2014
Estimating volatility from recent high frequency data, we revisit the question of the smoothness of the volatility process. Our main result is that log-volatility behaves essentially as a fractional Brownian motion with Hurst exponent H of order 0.1, at any reasonable time scale.
Gatheral, Jim   +2 more
openaire   +3 more sources

Corrosion-erosion processes of the AA 5083 (Al-Mg) alloy in seawater

open access: yesCiencias Marinas, 2003
Fourier Transforms are applied to analyse surface roughness profiles recorded on samples coming from corrosion-erosion assays. The information retrieved using this method clearly complements that revealed by the more classical roughness amplitude ...
A Aballe   +4 more
doaj   +1 more source

Rationale for granulometric medium characteristics under vibration processing of parts with small grooves and holes

open access: yesAdvanced Engineering Research, 2020
Introduction. The design technique for a highly efficient technological process of vibration finishing of parts with small grooves and holes is presented.
M. A. Tamarkin   +2 more
doaj   +1 more source

Analyze the Surface Thermodynamic and Dynamic Effects on the Atmospheric Boundary Layer Structure by Large Eddy Simulation

open access: yesGaoyuan qixiang, 2022
Atmospheric boundary layer structure affects the exchange of material and energy between the earth and air, the dispersion of pollutants and human health.The boundary layer structure is significantly affected by surface heating and dynamics, but it is ...
Min ZHANG   +3 more
doaj   +1 more source

Quantifying Basal Roughness and Internal Layer Continuity Index of Ice Sheets by an Integrated Means with Radar Data and Deep Learning

open access: yesRemote Sensing, 2022
Understanding englacial and subglacial structures is a fundamental method of inferring ice sheets’ historical evolution and surface mass balance. The internal layer continuity index and the basal roughness are key parameters and indicators for the ...
Xueyuan Tang   +4 more
doaj   +1 more source

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