Results 21 to 30 of about 3,287,588 (278)
Journal of Marine Science and Engineering, 2021 Intelligent predictive methods have the power to reliably estimate water saturation (Sw) compared to conventional experimental methods commonly performed by petrphysicists.
Fahimeh Hadavimoghaddam +5 more
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Sonic Log Prediction Based on Extreme Gradient Boosting (XGBoost) Machine Learning Algorithm by Using Well Log Data [PDF]
BIO Web of ConferencesSonic log is an important aspect that provides a detailed description of the subsurface properties associated with oil and gas reservoirs. The problem that frequently occurs is the unavailability of sonic log data for various reasons needs to be given an
Hakam Abdul +5 more
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Modelling dependency in multivariate paired comparisons:a log-linear approach. [PDF]
, 2006 A log-linear representation of the Bradley-Terry model is presented for multivariate paired comparison data, where judges are asked to compare pairs of objects on more than one attribute.
Dittrich, Regina +3 more
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MinInversion: A Program for Petrophysical Composition Analysis of Geophysical Well Log Data
Geosciences, 2018 Knowledge of the composition (mineral and fluid proportions) of rock formation lithologies is important for petrophysical and rock physics analysis. The mineralogy of a rock formation can be estimated by solving a system of linear equations that relate a
Adewale Amosu, Yuefeng Sun
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From time series to superstatistics [PDF]
, 2005 Complex nonequilibrium systems are often effectively described by a `statistics of a statistics', in short, a `superstatistics'. We describe how to proceed from a given experimental time series to a superstatistical description.
Christian Beck +6 more
core +1 more source
Unconventional Resources, 2021 Unconventional resources, such as shale oil and gas, are currently regarded as an essential resource in the face of depleting conventional hydrocarbon reserves.
Solomon Asante-Okyere +2 more
doaj +1 more source
Threesomes, Degenerates, and Love Triangles [PDF]
, 2014 The 3SUM problem is to decide, given a set of $n$ real numbers, whether any three sum to zero. It is widely conjectured that a trivial $O(n^2)$-time algorithm is optimal and over the years the consequences of this conjecture have been revealed. This 3SUM
Grønlund, Allan, Pettie, Seth
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A preliminary study of the gas hydrate stability zone in a gas hydrate potential region of China
Energy Science & Engineering, 2020 Due to its significance for gas hydrate accumulation, the gas hydrate stability zone (GHSZ) is an essential condition for successful gas hydrate exploration and is usually controlled by three main factors: gas components, geothermal gradient, and ...
Kun Xiao +5 more
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Fractal and Fractional, 2021 The Hölderian regularity is an important mathematical feature of a signal, connected with the physical nature of the measured parameter. Many algorithms have been proposed in literature for estimating the local Hölder exponent value, but all of them lead
Said Gaci, Orietta Nicolis
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Bayesian Poisson Log-Bilinear Mortality Projections [PDF]
, 2004 Mortality projections are major concerns for public policy, social security and private insurance. This paper implements a Bayesian log-bilinear Poisson regression model to forecast mortality.
Czado, Claudia, Delwarde, A., Denuit, M.
core +2 more sources