Results 81 to 90 of about 251,319 (312)

On the second minimum algebraic connectivity of the graphs whose complements are trees

AKCE International Journal of Graphs and Combinatorics, 2017
For a graph the algebraic connectivity denoted by , is the second smallest eigenvalue of the Laplacian matrix of . In Jiang et al. (2015), proved a unique graph with first minimum algebraic connectivity among the graphs which belong to a class of graphs ...
M. Javaid, Masood Ur Rehman
doaj   +1 more source

Improving the condition number of estimated covariance matrices

Tellus: Series A, Dynamic Meteorology and Oceanography, 2020
High dimensional error covariance matrices and their inverses are used to weight the contribution of observation and background information in data assimilation procedures.
Jemima M. Tabeart, Sarah L. Dance, Amos S. Lawless, Nancy K. Nichols, Joanne A. Waller   +4 more
doaj   +1 more source

Supermodes of high-repetition-rate passively mode-locked semiconductor lasers [PDF]

, 1996
We present a steady-state analysis of high-repetition-rate passively mode-locked semiconductor lasers. The analysis includes effects of amplitude-to-phase coupling in both gain and absorber sections. A many-mode eigenvalue approach is presented to obtain
Salvatore, Randal A., Sanders, Steve, Schrans, Thomas, Yariv, Amnon   +3 more
core  

Strong Proton‐Phonon Coupling Drives Fast Ion Transport in Perovskites

Advanced Science, EarlyView.
Experimental and computational phonon analysis of ABO3‐type proton conductor BaSnO3 shows that substitution on the B‐site with yttrium forms an imaginary phonon mode which is instrumental for the function as proton conductor. This overcompensates the adverse proton trapping effect of the yttrium.
Alexey Rulev, Nobumoto Nagasawa, Hongxin Wang, Vladimir Pomjakushin, Martin Kunz, Yoshitaka Yoda, Stephen P. Cramer, Qianli Chen, Artur Braun   +8 more
wiley   +1 more source

Inverse Eigenvalue Problems for Two Special Acyclic Matrices

Mathematics, 2016
In this paper, we study two inverse eigenvalue problems (IEPs) of constructing two special acyclic matrices. The first problem involves the reconstruction of matrices whose graph is a path, from given information on one eigenvector of the required matrix
Debashish Sharma, Mausumi Sen
doaj   +1 more source

Bicyclic graphs for which the least eigenvalue is minimum

Linear Algebra and its Applications, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Petrović, Miroslav, Borovićanin, Bojana, Aleksić, Tatjana   +2 more
openaire   +2 more sources

CellPolaris: Transfer Learning for Gene Regulatory Network Construction to Guide Cell State Transitions

Advanced Science, EarlyView.
CellPolaris decodes how transcription factors guide cell fate by building gene regulatory networks from transcriptomic data using transfer learning. It generates tissue‐ and cell‐type‐specific networks, identifies master regulators in cell state transitions, and simulates TF perturbations in developmental processes.
Guihai Feng, Xin Qin, Jiahao Zhang, Wuliang Huang, Yiyang Zhang, Wentao Cui, Yao Chen, Shirui Li, Wenhao Liu, Yao Tian, Yana Liu, Jingxi Dong, Ping Xu, Zhenpeng Man, Guole Liu, Zhongming Liang, Xinlong Jiang, Xiaodong Yang, Pengfei Wang, Ge Yang, Hongmei Wang, Xuezhi Wang, Ming‐Han Tong, Yuanchun Zhou, Shihua Zhang, Yiqiang Chen, Yong Wang, Xin Li   +27 more
wiley   +1 more source

The "hot spots" conjecture on the Vicsek set

Demonstratio Mathematica, 2019
We prove the “hot spots” conjecture on the Vicsek set. Specifically, we will show that every eigenfunction of the second smallest eigenvalue of the Neumann Laplacian on the Vicsek set attains its maximum and minimum on the boundary.
Ionescu Marius, Savage Thomas L.
doaj   +1 more source

On the least signless Laplacian eigenvalue of a non-bipartite connected graph with fixed maximum degree

Journal of Inequalities and Applications, 2017
In this paper, we determine the unique graph whose least signless Laplacian eigenvalue attains the minimum among all non-bipartite unicyclic graphs of order n with maximum degree Δ and among all non-bipartite connected graphs of order n with maximum ...
Shu-Guang Guo, Rong Zhang
doaj   +1 more source

Wedelolactone, a Novel TLR2 Agonist, Promotes Neutrophil Differentiation and Ameliorates Neutropenia: A Multi‐Omics Approach to Unravel the Mechanism

Advanced Science, EarlyView.
Wedelolactone (WED), a natural TLR2 agonist, promotes neutrophil differentiation and enhances bactericidal function, offering a potential therapeutic strategy for neutropenia. Using a multi‐omics approach, this study reveals that WED activates the TLR2/MEK/ERK pathway, upregulating key transcription factors (PU.1, CEBPβ) to drive neutrophil development.
Long Wang, Zhichao Li, Tianci Hu, Qinyao Li, Linwei Zhang, Xinyue Mei, Xiao Qi, Sheng Liu, Weijie Kong, Jiesi Luo, Anguo Wu, Feihong Huang, Sirui Li, Shuang Dai, Chunxiang Zhang, Rong Li, Jianming Wu   +16 more
wiley   +1 more source