Results 71 to 80 of about 3,205,738 (186)

Attractors with large complex structure for one-parameter families of Calabi-Yau manifolds

Journal of High Energy Physics, 2021
The attractor equations for an arbitrary one-parameter family of Calabi-Yau manifolds are studied in the large complex structure region. These equations are solved iteratively, generating what we term an N-expansion, which is a power series in the Gromov-
Philip Candelas, Pyry Kuusela, Joseph McGovern   +2 more
doaj   +1 more source

Parameters estimation of complex solar photovoltaic models using bi-parameter coordinated updating L-SHADE with parameter decomposition method

Case Studies in Thermal Engineering
Accurate estimation of unknown parameters of complex photovoltaic models is crucial to whether photovoltaic generators can efficiently convert energy. When a photovoltaic model has multiple diode branches, its complexity increases geometrically.
Xiaoyun Yang, Gang Zeng, Zan Cao, Xuefei Huang, Juan Zhao   +4 more
doaj   +1 more source

Interspecies interactions are an integral determinant of microbial community dynamics

Frontiers in Microbiology, 2015
This study investigated the factor that the determine the dynamics of bacterial communities in a complex system using multidisciplinary methods. Since real and engineered microbial ecosystems are too complex, six types of synthetic microbial ecosystems (
Fatma Azwani Abdul Aziz, Kenshi eSuzuki, Akihiro eOhtaki, Keita eSagegami, Hidetaka eHirai, Jun eSeno, Naoko eMizuno, Yuma eInuzuka, Yasuhisa eSaito, Yosuke eTashiro, Akira eHiraishi, Hiroyuki eFUTAMATA   +11 more
doaj   +1 more source

On Quantum Iterated Function Systems

, 2004
Quantum Iterated Function System on a complex projective space is defined by a family of linear operators on a complex Hilbert space. The operators define both the maps and their probabilities by one algebraic formula.
A. Jadczyk, A. Jadczyk, L. Skala, M.F. Barnsley, M.F. Barnsley, Ph. Blanchard, Ph. Blanchard, Ö. Stenflo   +7 more
core   +1 more source

Fixed-Parameter Complexity in AI and Nonmonotonic Reasoning

Artificial Intelligence, 1999
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gottlob, Georg, Scarcello, Francesco, Sideri, Martha   +2 more
openaire   +3 more sources

Two Block Splitting Iteration Methods for Solving Complex Symmetric Linear Systems from Complex Helmholtz Equation

Mathematics
In this paper, we study the improved block splitting (IBS) iteration method and its accelerated variant, the accelerated improved block splitting (AIBS) iteration method, for solving linear systems of equations stemming from the discretization of the ...
Yanan Zhu, Naimin Zhang, Zhen Chao
doaj   +1 more source

Payload Parameter Identification of a Flexible Space Manipulator System via Complex Eigenvalue Estimation

International Journal of Aerospace Engineering, 2020
Manipulator systems are widely used in payload capture and movement in the ground/space operation due to their dexterous manipulation capability. In this study, a method for identifying the payload parameters of a flexible space manipulator using the ...
Zhiyu Ni, Shunan Wu, Yewei Zhang, Zhigang Wu   +3 more
doaj   +1 more source

Modeling of complex-valued Wiener systems using B-spline neural network

, 2011
In this brief, a new complex-valued B-spline neural network is introduced in order to model the complex-valued Wiener system using observational input/output data. The complex-valued nonlinear static function in the Wiener system is represented using the
Chen, Sheng, Hong, Xia
core   +1 more source

Efficient Parameter Estimation for Sparse SAR Imaging Based on Complex Image and Azimuth-Range Decouple

Sensors, 2019
Sparse signal processing theory has been applied to synthetic aperture radar (SAR) imaging. In compressive sensing (CS), the sparsity is usually considered as a known parameter. However, it is unknown practically.
Mingqian Liu, Bingchen Zhang, Zhongqiu Xu, Yirong Wu   +3 more
doaj   +1 more source

Performance evaluation of the maximum complex correntropy criterion with adaptive kernel width update

EURASIP Journal on Advances in Signal Processing, 2019
The complex correntropy is a recently defined similarity measure that extends the advantages of conventional correntropy to complex-valued data. As in the real-valued case, the maximum complex correntropy criterion (MCCC) employs a free parameter called ...
Manoel B. L. Aquino, João P. F. Guimarães, Leandro L. S. Linhares, Aluísio I. R. Fontes, Allan M. Martins   +4 more
doaj   +1 more source