Results 41 to 50 of about 5,496,658 (160)
Low Complexity Precoding Based on Lanczos Method in Massive MIMO System [PDF]
Jisuanji gongcheng, 2019 Aiming at the problem that the computational complexity of the required matrix inversion of Zero Forcing(ZF) precoding matrix is very high due to the large number of antennas and users in large-scale MIMO systems,a low complexity ZF precoding scheme ...
CAO Haiyan,ZHOU Dong,FANG Xin,WANG Xiumin
doaj +1 more source
The Lanczos Algorithm Under Few Iterations: Concentration and Location of the Output
SIAM Journal on Matrix Analysis and Applications, 2019 We study the Lanczos algorithm where the initial vector is sampled uniformly from $\mathbb{S}^{n-1}$. Let $A$ be an $n \times n$ Hermitian matrix.
Jorge Garza-Vargas, Archit Kulkarni
semanticscholar +1 more source
Few‐Photon Fluorescence From Ultracold Bosons in an Optical Cavity
Contributions to Plasma Physics, EarlyView.ABSTRACT Within a cavity quantum electrodynamics framework, we analyse the fluorescent spectrum of ultracold bosons in resonant and second‐harmonic generation (SHG) regimes. Two settings are considered: (i) (few) bosons in an optical lattice and (ii) a trapped two‐component dilute Bose–Einstein condensate (2BEC) within the Bogoliubov scheme.
Megha Gopalakrishna +2 more
wiley +1 more source
Weighted Block Golub-Kahan-Lanczos Algorithms for Linear Response Eigenvalue Problem
Mathematics, 2019 In order to solve all or some eigenvalues lied in a cluster, we propose a weighted block Golub-Kahan-Lanczos algorithm for the linear response eigenvalue problem. Error bounds of the approximations to an eigenvalue cluster, as well as their corresponding
Hongxiu Zhong +2 more
doaj +1 more source
Simulating a ring-like Hubbard system with a quantum computer
Physical Review Research, 2022 We develop a workflow to use current quantum computing hardware for solving quantum many-body problems, using the example of the fermionic Hubbard model.
Philippe Suchsland +4 more
doaj +1 more source
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 +8 more
wiley +1 more source
SoftNet: A Package for the Analysis of Complex Networks
Algorithms, 2022 Identifying the most important nodes according to specific centrality indices is an important issue in network analysis. Node metrics based on the computation of functions of the adjacency matrix of a network were defined by Estrada and his collaborators
Caterina Fenu +2 more
doaj +1 more source
Lanczos algorithm with Matrix Product States for dynamical correlation functions [PDF]
, 2012 The density-matrix renormalization group (DMRG) algorithm can be adapted to the calculation of dynamical correlation functions in various ways which all represent compromises between computational efficiency and physical accuracy.
P. E. Dargel +5 more
semanticscholar +1 more source
Quarterly Journal of the Royal Meteorological Society, EarlyView.Total autumn precipitation in eastern Spain remains stable between 1950 and 2024, masking a substantial internal redistribution between ordinary and extreme rainfall. While torrential precipitation (Rp95) increases and ordinary precipitation (Ro) decreases, the extreme contribution index (Cext) shows a significant positive trend and a structural shift ...
Eduardo A. Agosta +3 more
wiley +1 more source
Journal of Oral Pathology &Medicine, EarlyView.ABSTRACT Background Actinic cheilitis (AC) is a potentially malignant oral disorder linked to lip squamous cell carcinoma (LSCC). Clinical diagnosis is hindered by lesion heterogeneity. While AI tools have shown promise in oral lesion detection and diagnosis, image segmentation remains underexplored. This study developed and externally validated a deep
Vitor Simbalista Teixeira Soares +16 more
wiley +1 more source