Results 251 to 260 of about 16,824,350 (311)

Integration of first- and second-order orientation

Journal of the Optical Society of America A, 2003
The problem of how visual information such as orientation is combined across space bears on key visual abiities, such as texture perception. Orientation signals can be derived from both luminance and contrast, but it is not well understood how such information is pooled or how these different orientation signals interact in the integration process.
Harriet A, Allen, Robert F, Hess, Behzad, Mansouri, Steven C, Dakin   +3 more
openaire   +2 more sources

First integrals for the damped Helmholtz oscillator

International Journal of Computer Mathematics, 2010
Recently, the modified Prelle-Singer method for finding general solutions of second-order nonlinear ordinary differential equations has attracted considerable attention. Many researchers used this method to derive the first integrals of various dynamical systems.
Zhaosheng Feng, Qingguo Meng
openaire   +1 more source

Approximate First Integrals of a Galaxy Model

Nonlinear Dynamics, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ünal, G., Gorali, G.
openaire   +2 more sources

Asymptotic Expansion of the First Elliptic Integral

SIAM Journal on Mathematical Analysis, 1985
Summary: Asymptotic formulas with error bounds are obtained for the first elliptic integral near its logarithmic singularity. It is convenient to start from the more general problem of expanding the integral over the positive t- axis of \([(t+x)(t+y)(t+z)(t+w)]^{-1/2}\).
Carlson, B. C., Gustafson, John L.
openaire   +2 more sources

Integrative Technology for the Twenty‐First Century

Annals of the New York Academy of Sciences, 2004
Abstract: Presented is the concept of Integrative Technology, the intersection of the precision assembly of matter (nanotechnology), coupled with the functional building blocks of nature (biotechnology), and fused by the network flow of spatiotemporal information (informatics). The power of Integrative Technology is illuminated through an illustrative
openaire   +2 more sources

The first integral method for Wu–Zhang system with conformable time-fractional derivative

Calcolo, 2016
M. Eslami, H. Rezazadeh
semanticscholar   +2 more sources

Strictly Cooperative Systems with a First Integral

SIAM Journal on Mathematical Analysis, 1987
We consider systems of differential equations \(dx_ i/dt=F_ i(x_ 1,...,x_ n)\) in the nonnegative orthant in the n-space satisfying the following hypotheses: i) \(F(0)=0\); ii) if \(x_ ...
openaire   +1 more source

A new general integral transform for solving integral equations

Journal of Advanced Research, 2021
Hossein Jafari
exaly  

The first integral method applied to the Bogoyavlenskii equations by means of conformable fractional derivative

, 2017
M. Eslami, F. S. Khodadad, F. Nazari, H. Rezazadeh   +3 more
semanticscholar   +1 more source

First integral method for non-linear differential equations with conformable derivative

, 2018
H. Yépez-Martínez, J. F. Gómez‐Aguilar, A. Atangana   +2 more
semanticscholar   +1 more source