Results 31 to 40 of about 9,752 (182)

Harmonic N=2 Mechanics [PDF]

, 2009
N=2 superconformal many-body quantum mechanics in arbitrary dimensions is governed by a single scalar prepotential which determines the bosonic potential and the boson-fermion couplings.
Galajinsky, Anton, Lechtenfeld, Olaf
core   +3 more sources

Enhancing Diagnostic Accuracy of Transformer Faults Using Teaching-Learning-Based Optimization

IEEE Access, 2021
The early detection of the transformer faults with high accuracy rates guarantees the continuous operation of the power system networks. Dissolved gas analysis (DGA) is a technique that is used to detect or diagnose the transformer faults based on the ...
Sherif S. M. Ghoneim, Karar Mahmoud, Matti Lehtonen, Mohamed M. F. Darwish   +3 more
doaj   +1 more source

Combining Contrast Invariant L1 Data Fidelities with Nonlinear Spectral Image Decomposition [PDF]

, 2017
This paper focuses on multi-scale approaches for variational methods and corresponding gradient flows. Recently, for convex regularization functionals such as total variation, new theory and algorithms for nonlinear eigenvalue problems via nonlinear ...
A Chambolle, A Haddad, A Hoover, C Brune, C Wu, C Zach, D Strong, G Bellettini, G Gilboa, G Gilboa, G Gilboa, J Yuan, JF Aujol, L Zeune, M Burger, M Burger, M Nikolova, S Osher, TF Chan, V Caselles, V Duval, W Yin, Y Dong   +22 more
core   +3 more sources

Analisakegagalan Transformator Dayaberdasarkan Hasil Uji Dga Dengan Metode TDCG, Key Gas, Roger’s Ratio, Duval’s Triangle Pada Gardu Induk

Jurnal Teknik Elektro dan Komputer, 2014
Abstrak—Pada transformator daya dapat terjadi gangguan-gangguan yang dapat menyebabkan kegagalan transformator.Untuk itu diperlukan perawatan dan pemeliharaan pada transformator daya, salah satunya dengan melakukan pengujian minyak transformator yaitu pengujian DGA.Pengujian ini dilakukan untuk mengetahui ada tidaknya ketidaknormalan pada transformator.
Demmassabu, Alan R., Patras, Lily S., Lisi, Fielman   +2 more
openaire   +2 more sources

Alternative Interpretation of Sharply Rising E0 Strengths in Transitional Regions

, 2004
It is shown that strong 0+2 -> 0+1 E0 transitions provide a clear signature of phase transitional behavior in finite nuclei. Calculations using the IBA show that these transition strengths exhibit a dramatic and robust increase in spherical-deformed ...
A. Arima, C. Scholl, E. A. McCutchan, F. Iachello, J. Jolie, O. Scholten, P. von Brentano, R. F. Casten, R. Krücken, T. Otsuka, V. Werner   +10 more
core   +1 more source

Evidence and modeling of turbulence bifurcation in L-mode confinement transitions on Alcator C-Mod [PDF]

, 2020
© 2020 Author(s). Analysis and modeling of rotation reversal hysteresis experiments show that a single turbulent bifurcation is responsible for the Linear to Saturated Ohmic Confinement (LOC/SOC) transition and concomitant intrinsic rotation reversal on ...
Cao, NM, Chilenski, MA, Diamond, PH, Ennever, PC, Hughes, JW, Irby, J, Reinke, ML, Rice, JE, Rodriguez-Fernandez, P, Team, Alcator C-Mod, White, AE   +10 more
core   +2 more sources

Detection of Incipient Faults in Power Transformers using Fuzzy Logic and Decision Tree Models Based on Dissolved Gas Analysis

ABUAD Journal of Engineering Research and Development
This paper proposes an integrated approach utilizing Fuzzy Logic and Decision Tree algorithms to diagnose early-stage faults in power transformers based on Dissolved Gas Analysis (DGA) test results of transformer insulation oil.
Felix Olowolafe, Kehinde Olukunmi Alawode   +1 more
doaj   +1 more source

Reliable Estimation for Health Index of Transformer Oil Based on Novel Combined Predictive Maintenance Techniques

IEEE Access, 2022
Transformer oil insulation condition may be deteriorated due to electrical and thermal faults, which may lead to transformer failure and system outage. In this regard, the first part of this paper presents comprehensive maintenance for power transformers
Mohamed Badawi, Shimaa A. Ibrahim, Diaa-Eldin A. Mansour, Adel A. El-Faraskoury, Sayed A. Ward, Karar Mahmoud, Matti Lehtonen, Mohamed M. F. Darwish   +7 more
doaj   +1 more source

Torsion and anomalies in the warped limit of Lifschitz theories [PDF]

, 2020
We describe the physics of fermionic Lifschitz theories once the anisotropic scaling exponent is made arbitrarily small. In this limit the system acquires an enhanced (Carrollian) boost symmetry. We show, both through the explicit computation of the path
Copetti, Christian
core   +2 more sources

Comparison of Dissolved Gases in Mineral and Vegetable Insulating Oils under Typical Electrical and Thermal Faults

Energies, 2016
Dissolved gas analysis (DGA) is attracting greater and greater interest from researchers as a fault diagnostic tool for power transformers filled with vegetable insulating oils.
Chenmeng Xiang, Quan Zhou, Jian Li, Qingdan Huang, Haoyong Song, Zhaotao Zhang   +5 more
doaj   +1 more source