Results 11 to 20 of about 101,501 (201)

Evolution of initial discontinuities in the Riemann problem for the Kaup-Boussinesq equation with positive dispersion. [PDF]

open access: yesChaos, 2017
We consider the space-time evolution of initial discontinuities of depth and flow velocity for an integrable version of the shallow water Boussinesq system introduced by Kaup.
T. Congy   +4 more
semanticscholar   +6 more sources

No more walls! A tale of modularity, symmetry, and wall crossing for 1/4 BPS dyons [PDF]

open access: yesJournal of High Energy Physics, 2017
We determine the generating functions of 1/4 BPS dyons in a class of 4d N $$ \mathcal{N} $$ = 4 string vacua arising as CHL orbifolds of K3 × T 2, a classification of which has been recently completed. We show that all such generating functions obey some
Natalie M. Paquette   +2 more
doaj   +4 more sources

LoHi-WELD: A Novel Industrial Dataset for Weld Defect Detection and Classification, a Deep Learning Study, and Future Perspectives

open access: yesIEEE Access
The automated inspection of weld beads is of great importance for many industrial processes. Failures may cause a loss of mechanical resistance of the weld bead and compromise the manufactured part. Several methods have been proposed in the literature to
Sylvio Biasuz Block   +3 more
semanticscholar   +3 more sources

Rock Slope Stability Of Ponorogo - Pacitan Road Km 232.5 Using Rock Mass Rating (Rmr) And Rocplane Software

open access: yesRekayasa Sipil, 2021
Geological structures and discontinuities in the rock are weak areas and groundwater infiltration pathways. The existence of geological structures and discontinuities will reduce the level of rock shear strength and the main implication is to increase ...
Hasyim Alhadar   +2 more
doaj   +1 more source

Discontinuity Detection in GNSS Station Coordinate Time Series Using Machine Learning

open access: yesRemote Sensing, 2021
Global navigation satellite systems (GNSS) provide globally distributed station coordinate time series that can be used for a variety of applications such as the definition of a terrestrial reference frame.
Laura Crocetti   +2 more
doaj   +1 more source

A Machine Learning Approach to Extract Rock Mass Discontinuity Orientation and Spacing, from Laser Scanner Point Clouds

open access: yesRemote Sensing, 2022
This study wants to give a contribution to the semi-automatic evaluation of rock mass discontinuities, orientation and spacing, as important parameters used in Engineering.
Elisa Mammoliti   +5 more
doaj   +1 more source

Learning non-stationary and discontinuous functions using clustering, classification and Gaussian process modelling [PDF]

open access: yesComputers & Structures, 2022
Surrogate models have shown to be an extremely efficient aid in solving engineering problems that require repeated evaluations of an expensive computational model. They are built by sparsely evaluating the costly original model and have provided a way to
M. Moustapha, B. Sudret
semanticscholar   +1 more source

TRENDS IN THE DEVELOPMENT OF DETONATION ENGINES FOR HIGH-SPEED AEROSPACE AIRCRAFTS AND THE PROBLEM OF TRIPLE CONFIGURATIONS OF SHOCK WAVES. Part II - Research of counterpropagating shock waves and triple shock wave configurations [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2016
The paper deals with current issues of the interference theory development of gas-dynamic discontinuities as applied to a problem of propulsion refinement for the air-spacecrafts, designed for hypersonic flight speeds.
P. V. Bulat, P. V. Denissenko
doaj   +1 more source

Geo-Engineering Analysis and Evaluation of Unstable Rocky Slopes near Shaqlawa, NE Iraq

open access: yesIraqi Geological Journal, 2022
Engineering Geological study of rock slope stability was conducted in two stations along the Shaqlawa region route. Rock slopes and discontinuities were thoroughly investigated at each site, and the linkages between failures were identified. The
Thair Al-Samarrai
doaj   +1 more source

Quantitative morphometrics suggest that the widespread Neotropical Humiria balsamifera (Aubl.) St. Hil. is a species complex

open access: yesActa Botânica Brasílica, 2021
Humiria balsamifera is an infraspecific complex of high phenotypic variation and widely distributed in northern South America. Leaf traits are traditionally considered the most relevant taxonomic characters for varietal level delimitation in the group ...
Ana Sofia Sousa de Holanda   +4 more
doaj   +1 more source

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