Results 61 to 70 of about 91,180 (283)

Truncated decompositions and filtering methods with Reflective/Anti-Reflective boundary conditions: a comparison [PDF]

open access: yes, 2007
The paper analyzes and compares some spectral filtering methods as truncated singular/eigen-value decompositions and Tikhonov/Re-blurring regularizations in the case of the recently proposed Reflective [M.K. Ng, R.H. Chan, and W.C. Tang, A fast algorithm
C. Tablino Possio   +3 more
core  

LDAcoop: Integrating non‐linear population dynamics into the analysis of clonogenic growth in vitro

open access: yesMolecular Oncology, EarlyView.
Limiting dilution assays (LDAs) quantify clonogenic growth by seeding serial dilutions of cells and scoring wells for colony formation. The fraction of negative wells is plotted against cells seeded and analyzed using the non‐linear modeling of LDAcoop.
Nikko Brix   +13 more
wiley   +1 more source

Analysis of the Singular Values for Conductivity Reconstruction in Magneto-Acoustic Tomography With Magnetic Induction

open access: yesIEEE Access, 2020
Due to the acoustic source distribution and limited bandwidth ultrasound measurement, the dominant ultrasound signals always come from the boundary of the electrical conductivity in magneto-acoustic tomography with magnetic induction (MAT-MI).
Ren Ma   +5 more
doaj   +1 more source

Optimal map of the modular structure of complex networks

open access: yes, 2010
Modular structure is pervasive in many complex networks of interactions observed in natural, social and technological sciences. Its study sheds light on the relation between the structure and function of complex systems.
A Arenas   +8 more
core   +1 more source

Peroxidasin enables melanoma immune escape by inhibiting natural killer cell cytotoxicity

open access: yesMolecular Oncology, EarlyView.
Peroxidasin (PXDN) is secreted by melanoma cells and binds the NK cell receptor NKG2D, thereby suppressing NK cell activation and cytotoxicity. PXDN depletion restores NKG2D signaling and enables effective NK cell–mediated melanoma killing. These findings identify PXDN as a previously unrecognized immune evasion factor and a potential target to improve
Hsu‐Min Sung   +17 more
wiley   +1 more source

A Numerical Method for Lane-Emden Equations Using Hybrid Functions and the Collocation Method

open access: yesJournal of Applied Mathematics, 2012
A numerical method to solve Lane-Emden equations as singular initial value problems is presented in this work. This method is based on the replacement of unknown functions through a truncated series of hybrid of block-pulse functions and Chebyshev ...
Changqing Yang, Jianhua Hou
doaj   +1 more source

Medical Image Denoising Based on Biquadratic Polynomial With Minimum Error Constraints and Low-Rank Approximation

open access: yesIEEE Access, 2020
To improve the visual quality of noisy medical images acquired by low radiation dose imaging, medical image denoising is highly desirable for clinical disease diagnosis.
Linlin Ji, Qiang Guo, Mingli Zhang
doaj   +1 more source

Comparative study on the applicability of regularization method in ship’s magnetic signature modeling based on monopole array

open access: yesAIP Advances, 2022
In this paper, we first study the applicability and stability of the Tikhonov regularization method (TRM) and the truncated singular value decomposition method in ship’s magnetic signature inversion modeling.
Baowei He, Shengdao Liu, Jingwen Zong
doaj   +1 more source

A block Krylov subspace time-exact solution method for linear ODE systems [PDF]

open access: yes, 2012
We propose a time-exact Krylov-subspace-based method for solving linear ODE (ordinary differential equation) systems of the form $y'=-Ay + g(t)$ and $y''=-Ay + g(t)$, where $y(t)$ is the unknown function. The method consists of two stages.
Botchev, M.A.
core   +2 more sources

Accelerating Large-Scale Data Analysis by Offloading to High-Performance Computing Libraries using Alchemist

open access: yes, 2018
Apache Spark is a popular system aimed at the analysis of large data sets, but recent studies have shown that certain computations---in particular, many linear algebra computations that are the basis for solving common machine learning problems---are ...
Gerhardt, Lisa   +8 more
core   +1 more source

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