Results 41 to 50 of about 262,495 (180)

Assessing the Effects of Continuous Theta Burst Stimulation Over the Dorsolateral Prefrontal Cortex on Human Cognition: A Systematic Review

open access: yesFrontiers in Integrative Neuroscience, 2020
Theta burst stimulation is increasingly growing in popularity as a non-invasive method of moderating corticospinal networks. Theta burst stimulation uses gamma frequency trains applied at the rhythm of theta, thus, mimicking theta–gamma coupling involved
Ronald Ngetich   +4 more
doaj   +1 more source

Cognitive effects of theta frequency bilateral subthalamic nucleus stimulation in Parkinson’s disease: A pilot study

open access: yesBrain Stimulation, 2021
Background: There is significant evidence for cognitive decline following deep brain stimulation (DBS). Current stimulation paradigms utilize gamma frequency stimulation for optimal motor benefits; however, little has been done to optimize stimulation ...
Jordan Lam   +13 more
doaj   +1 more source

Covariant quantizations in plane and curved spaces [PDF]

open access: yes, 2017
We present covariant quantization rules for nonsingular finite dimensional classical theories with flat and curved configuration spaces. In the beginning, we construct a family of covariant quantizations in flat spaces and Cartesian coordinates.
Assirati, J., Gitman, D. M.
core   +3 more sources

Cubic theta functions

open access: yesJournal of Computational and Applied Mathematics, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Lyapunov exponents for families of rotated linear cocycles

open access: yes, 2015
In this work, we are interested in the study of the upper Lyapunov exponent $\lambda^+(\theta)$ associated to the periodic family of cocycles defined by $$A_\theta(x):=A(x)R_\theta,\qquad x\in X,$$ where $A\::\: X\to \mathbb{GL}^+(2,\mathbb{R})$ is a ...
Valenzuela-Henríquez, Pancho   +1 more
core   +1 more source

Two Coupled Harmonic Oscillators on Non-commutative Plane

open access: yes, 2003
We investigate a system of two coupled harmonic oscillators on the non-commutative plane \RR^2_{\theta} by requiring that the spatial coordinates do not commute. We show that the system can be diagonalized by a suitable transformation, i.e.
AHMED JELLAL   +13 more
core   +1 more source

Computing Riemann theta functions [PDF]

open access: yesMathematics of Computation, 2003
The Riemann theta function is a complex-valued function of g complex variables. It appears in the construction of many (quasi-) periodic solutions of various equations of mathematical physics. In this paper, algorithms for its computation are given.
Deconinck, Bernard   +4 more
openaire   +2 more sources

Interpolation of periodic functions and construction of biorthogonal systems using uniform shifts of the theta function

open access: yesСовременная математика: Фундаментальные направления
The problems of interpolation of periodic functions and construction of biorthogonal systems are considered. Uniform shifts of the third Jacobi theta function are used as a basis.
M. L. Zhadanova
doaj   +1 more source

Exact Solutions for (3+1)-Dimensional Potential-YTSF Equation and Discrete Kadomtsev-Petviashvili Equation

open access: yesJournal of Applied Mathematics, 2013
By employing Hirota bilinear method, we mainly discuss the (3+1)-dimensional potential-YTSF equation and discrete KP equation. For the former, we use the linear superposition principle to get its N exponential wave solutions.
Yan Wang, Zhenhui Wang
doaj   +1 more source

Feature Selection for Interval-Valued Data Based on D-S Evidence Theory

open access: yesIEEE Access, 2021
Feature selection is one basic and critical technology for data mining, especially in current “big data era”. Rough set theory (RST) is sensitive to noise in feature selection due to the strict condition of equivalence relation.
Yichun Peng, Qinli Zhang
doaj   +1 more source

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