Results 11 to 20 of about 104,268 (321)

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

Machine learning-based classification of rock discontinuity trace: SMOTE oversampling integrated with GBT ensemble learning

open access: diamondInternational Journal of Mining Science and Technology, 2022
This paper presents a hybrid ensemble classifier combined synthetic minority oversampling technique (SMOTE), random search (RS) hyper-parameters optimization algorithm and gradient boosting tree (GBT) to achieve efficient and accurate rock trace identification.
Jiayao Chen   +4 more
openaire   +3 more sources

Reclassification of thermal equilibrium phase-transitions in thermodynamic limit systems [PDF]

open access: yesScientific Reports
For relaxor-ferroelectrics and relaxor-ferromagnets, the initial Ehrenfest-classification gives no phase-transition that contradicts the measured order-parameter, while the classification according to order-parameter and its derivatives raises the ...
Lai Wei, Li-Li Zhang, Yi-Neng Huang
doaj   +2 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
doaj   +2 more sources

A Study on the Quantification of Assessment Category of Roughness of Discontinuity of Rock Mass Classification Using Delphi method

open access: diamondJournal of Korean Society For Rock Mechanics, 2015
Abstract This paper describes a new quantitative process for evaluating the roughness of discontinuity, which is suggested as a qualitative criteria in RMR or Q-system. For this purpose, the Delphi method which is one of the surveying methods was introduced.
Byung-Ryeol Kim   +2 more
openaire   +3 more sources

SVM Algorithm for Industrial Defect Detection and Classification [PDF]

open access: yesMATEC Web of Conferences, 2022
This article presents a new algorithm for recognizing defects and discontinuities. It is a neural classification algorithm of the SVM class used for the vision system in the technological sequence.
Lalik Krzysztof   +4 more
doaj   +1 more source

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

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