Results 41 to 50 of about 22,526 (213)

On Effective Constraints for the Riemann-Lanczos System of Equations [PDF]

, 2003
There have been conflicting points of view concerning the Riemann--Lanczos problem in 3 and 4 dimensions. Using direct differentiation on the defining partial differential equations, Massa and Pagani (in 4 dimensions) and Edgar (in dimensions n > 2) have
Andersson F., Bampi F., Brinis Udeschini E., Brinis Udeschini E., Dolan P., Dolan P., Edgar S. B., Edgar S. B., Edgar S. B., Edgar S. B., Edgar S. B., Hermann R., Janet M., Lovelock D., Massa E., S. Brian Edgar   +15 more
core   +2 more sources

Cauchy-Lanczos Algorithm for Effective Dimension Reduction

IEEE Access
The aim of dimension reduction techniques is to eliminate unnecessary information from extensive datasets, thereby enhancing the effectiveness of data analysis.
Xuansheng Wang, Linzhong Xia, Changwei Lv   +2 more
doaj   +1 more source

Modal analysis of a small vertical axis wind turbine (Type DARRIEUS) [PDF]

INCAS Bulletin, 2012
This paper reports a brief study on free vibration analysis for determining parameters such as natural frequencies and mode shapes for vertical axis wind turbines (VAWT) for an urban application.
Ion NILA, Radu BOGATEANU, Marcel STERE, Daniela BARAN   +3 more
doaj   +1 more source

Magnetic energy-level diagrams of high-spin (Mn$_{12}$-acetate) and low-spin (V$_{15}$) molecules [PDF]

, 2003
The magnetic energy-level diagrams for models of the Mn12 and V15 molecule are calculated using the Lanczos method with full orthogonalization and a Chebyshev-polynomial-based projector method.
Al-Saqer, Barbara, Boukhvalov, Boukhvalov, Caneschi, Chiorescu, Chiorescu, Chiorescu, Chiorescu, Chiorescu, Chiorescu, Crépieux, De Raedt, De Raedt, De Raedt, Dobrovitskii, Dzyaloshinskii, Friedman, Gatteschi, Golub, Gunther, Gunther, Honecker, Kaplan, Katsnelson, Konstantinidis, Kostyuchenko, Levine, Miyashita, Miyashita, Miyashita, Moriya, Perenboom, Pohjola, Raghu, Regnault, Rudra, Rudra, Rudra, Sangregorio, Sessoli, Shekhtman, Shekhtman, Thomas, Wernsdorfer, Wernsdorfer, Wernsdorfer, Wilkinson, Yosida, Zheludev, Zhong   +50 more
core   +3 more sources

Advanced Design for Weakly Coupled Resonators by Automatic Active Optimization

Advanced Materials Technologies, EarlyView.
An Automatic Active Optimization (AAO) strategy integrates machine learning predictors and genetic algorithms in a closed‐loop workflow. By iteratively expanding its dataset with new discoveries, AAO overcomes the limits of conventional methods. This approach finds superior microstructural designs beyond the initial sample space. We demonstrate this on
Wei Yue, Yuan Gao, Fanping Sui, Jason Wang, Megan Teng, Peggy Tsao, Huicong Deng, Yande Peng, Liwei Lin   +8 more
wiley   +1 more source

Ejecta‐Modulated Bubble Dynamics Play a Dominant Role in Stone Retropulsion

Advanced Science, EarlyView.
Stone motion during laser ablation is shown to result primarily from asymmetric cavitation bubble collapse, not from ejecta recoil. This challenges long‐standing assumptions and highlights the dominant role of bubble dynamics in laser–material interactions.
Obed S. Isaac, Arpit Mishra, Georgy N. Sankin, Junqin Chen, Pei Zhong   +4 more
wiley   +1 more source

Incremental eigenpair computation for graph Laplacian matrices: theory and applications [PDF]

, 2017
The smallest eigenvalues and the associated eigenvectors (i.e., eigenpairs) of a graph Laplacian matrix have been widely used for spectral clustering and community detection. However, in real-life applications, the number of clusters or communities (say,
Al Hasan, Mohammad, Chen, Pin-Yu, Zhang, Baichuan   +2 more
core   +3 more sources

Impact of hamstring versus quadriceps tendon graft on thigh muscle strength and surface electromyography activity after anterior cruciate ligament reconstruction

Knee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Purpose To compare quadriceps tendon (QT) and hamstring tendon (HT) autografts regarding isometric thigh muscle strength, surface electromyography (sEMG) activity and clinical outcomes following anterior cruciate ligament reconstruction (ACLR).
Benjamin Forquignon, Tobias Drenck, Matthias Krause, Ralph Akoto, Karl‐Heinz Frosch, Götz Welsch, Alexander Korthaus, Grégoire Thürig, Dimitris Dalos   +8 more
wiley   +1 more source

Tridiagonal Hamiltonians modeling the density of states of the double-scaled SYK model

Journal of High Energy Physics
By analyzing the global density of states (DOS) in the Double-Scaled Sachdev-Ye-Kitaev (DSSYK) model, we construct a finite-dimensional Hamiltonian that replicates this DOS.
Pratik Nandy
doaj   +1 more source

Block bond-order potential as a convergent moments-based method [PDF]

, 1999
The theory of a novel bond-order potential, which is based on the block Lanczos algorithm, is presented within an orthogonal tight-binding representation.
A. Canning, A. Warshel, A.F. Voter, A.P. Horsfield, A.P. Horsfield, A.P. Horsfield, A.P. Horsfield, A.P. Horsfield, A.P. Sutton, C. Lanczos, C.H. Xu, D. Conrad, D. G. Pettifor, D.G. Pettifor, D.G. Pettifor, D.G. Pettifor, D.G. Pettifor, D.M.C. Nicholson, D.R. Bowler, D.R. Bowler, F. Mauri, F. Mauri, G. Galli, G. Galli, G. Golub, I.I. Oleinik, J. Inoue, J.C. Slater, J.D. Kress, L. Goodwin, M. Aoki, M. Aoki, M.K. Gilson, M.R. Falvo, M.S. Daw, O.F. Sankey, R. Haydock, R. Haydock, R. Haydock, R. Jones, S. Goedecker, S. Goedecker, S. Goedecker, S. Iijima, S.T. Wlodek, T. Ozaki, T. Ozaki, V. Heine, W. Kohn, W.T. Yang, X.-P. Li   +50 more
core   +2 more sources