Results 81 to 90 of about 359,696 (180)

Diffusion of Brownian particles and Liouville field theory

, 2009
In this work we review a recently proposed transformation which is useful in order to simplify non-polynomial potentials given in the form of an exponential. As an application, it is shown that the Liouville field theory may be mapped into a field theory
Ferrari, Franco, Paturej, Jaroslaw
core  

A granularity data method for power frequency electric and electromagnetic fields forecasting based on T–S fuzzy model

Complex & Intelligent Systems
The impact of electromagnetic radiation generated by signal transmission base stations and power stations to meet the needs of communication equipment and energy consumption on the environment has caused people concerns.
Peng Nie, Qiang Yu, Zhenkun Li, Xiguo Yuan   +3 more
doaj   +1 more source

Study of PARP inhibitors for breast cancer based on enhanced multiple kernel function SVR with PSO

Frontiers in Pharmacology
PARP1 is one of six enzymes required for the highly error-prone DNA repair pathway microhomology-mediated end joining (MMEJ) and needs to be inhibited when over-expressed.
Haohan Xue, Ruixuan Zhang, Xudong Yan, Ruihan Wang, Peijian Zhang   +4 more
doaj   +1 more source

Simple Darboux points of polynomial planar vector fields

Journal of Pure and Applied Algebra, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Centers of projective vector fields of spatial quasi-homogeneous systems with weight $(m,m,n)$ and degree $2$ on the sphere

Electronic Journal of Qualitative Theory of Differential Equations, 2016
In this paper we study the centers of projective vector fields $\mathbf{Q}_T$ of three-dimensional quasi-homogeneous differential system $d\mathbf{x}/dt=\mathbf{Q}(\mathbf{x})$ with the weight $(m,m,n)$ and degree $2$ on the unit sphere $\mathbb{S}^2 ...
Haihua Liang, Joan Torregrosa
doaj   +1 more source

Complete polynomial vector fields on the complex plane

Topology, 2004
Let \(v=P(z,w)\partial/\partial z + Q(z,w)\partial/\partial w\) be a complete polynomial vector field on the complex plane \(\mathbb C^ 2\). The author proves that then \(v\) is, up to a polynomial change of coordinates, of one of the three types specified in the main theorem of his paper.
openaire   +1 more source

Nonlinear differential equations with deviating arguments and approximations via a Parker-Sochacki approach

Electronic Journal of Differential Equations, 2017
The Parker-Sochacki method has been successful in generating approximations for a wide variety of ODEs, and even PDEs of evolution type, by achieving an autonomous polynomial vector field and implementing the Picard iteration.
Vincenzo M. Isaia
doaj  

Galoisian and qualitative approaches to linear Polyanin-Zaitsev vector fields

Open Mathematics, 2018
In this paper we study a particular parametric family of differential equations, the so-called Linear Polyanin-Zaitsev Vector Field, which has been introduced in a general case in [1] as a correction of a family presented in [2].
Acosta-Humánez Primitivo B., Reyes-Linero Alberto, Rodriguez-Contreras Jorge   +2 more
doaj   +1 more source

Solving Degree Bounds for Iterated Polynomial Systems

IACR Transactions on Symmetric Cryptology
For Arithmetization-Oriented ciphers and hash functions Gröbner basis attacks are generally considered as the most competitive attack vector. Unfortunately, the complexity of Gröbner basis algorithms is only understood for special cases, and it is ...
Matthias Johann Steiner
doaj   +1 more source

Identification and assessment of risk factors in the supply chain of the pharmaceutical industry using artificial intelligence.

بیمارستان, 2021
Background and Aim: As difficulties increase, the level of uncertainty and risk in the supply chain increases. Medicine is a strategic product and is directly related to community health.
Rahele Panjekoobi, Farzad Firouzi Jahantigh   +1 more
doaj