The European Physical Journal Special Topics

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Impulsive control functional differential systems of fractional order: stability with respect to manifolds
The European Physical Journal Special Topics - Tập 226 - Trang 3591-3607 - 2018
Martin Bohner, Ivanka Stamova, Gani Stamov
In this paper, we consider nonlinear impulsive functional differential systems involving Caputo fractional derivatives. Using vector multivariable piecewise continuous Lyapunov functions and a new vector fractional comparison principle, stability criteria with respect to a manifold are established. Some examples are presented in order to illustrate our theoretical findings.
Approximate solution of impedance matching for nonmagnetic homogeneous absorbing materials
The European Physical Journal Special Topics - Tập 231 - Trang 4213-4220 - 2022
Xiangyu Wang, Zuojuan Du, Mingming Hou, Zizhao Ding, Chao Jiang, Xiaozhong Huang, Jianling Yue
Impedance matching is an essential concept in the design of absorbing materials. Its basic form $$ Z_\mathrm{{in}}$$ – $$Z_{0} \quad =$$ 0 derived from the expression of reflectivity transmission line is often used to explain the reason for the reflectivity peak. Still, the relationship between impedance matching and material parameters has not been accurately described so far. In this paper, for ... hiện toàn bộ
Avoiding traps in trajectory space: Metadynamics enhanced transition path sampling
The European Physical Journal Special Topics - Tập 225 - Trang 1609-1620 - 2016
E.E. Borrero, C. Dellago
We propose a transition path sampling (TPS) scheme designed to enhance sampling in systems with multiple reaction channels. In this method, based on a combination of the metadynamics algorithm with the TPS shooting move, a history dependent bias drives the simulation towards unexplored reaction channels. The bias, constructed as a superposition of repulsive Gaussian potentials deposited on the tra... hiện toàn bộ
Radon, CO2 and CH4 as environmental tracers in groundwater/surface water interaction studies − comparative theoretical evaluation of the gas specific water/air phase transfer kinetics
The European Physical Journal Special Topics - Tập 224 - Trang 709-715 - 2015
M. Schubert, A. Paschke
The applicability of radon as environmental tracer in groundwater/surface water interaction studies has been documented in a considerable number of publications. In some of these reports it has also been suggested to validate the radon based results by using CO2 and CH4 as supplementary tracers. The on-site measurement of the three gaseous parameters relies on their extraction from the water follo... hiện toàn bộ
The “island of inversion" from a nuclear moments perspective and the g factor of 35Si
The European Physical Journal Special Topics - Tập 150 - Trang 149-153 - 2007
G. Neyens, P. Himpe, D. L. Balabanski, P. Morel, L. Perrot, M. De Rydt, I. Stefan, C. Stodel, J. C. Thomas, N. Vermeulen, D. T. Yordanov
This paper reviews recent results from electromagnetic moment measurements on isotopes in the island of inversion around N=20. The obtained moments on neutron rich Na, Mg, Al and Si isotopes allow to draw conclusions on the amount of intruder components in their ground state wave function, demonstrating a gradual transition from the normal sd-shell region into the island of inversion, starting at ... hiện toàn bộ
Design and implementation of fuzzy-PD controller based on relation models: A cross-entropy optimization approach
The European Physical Journal Special Topics - Tập 226 Số 10 - Trang 2393-2406 - 2017
Dmitry Anisimov, Thai Son Dang, Santo Banerjee
Structure of nuclei far from the stability in relativistic approach
The European Physical Journal Special Topics - Tập 150 - Trang 139-144 - 2007
S. F. Ban, L. S. Geng, W. H. Long, J. Meng, J. Peng, J. M. Yao, S. Q. Zhang, S. G. Zhou
The recent progress of the relativistic many-body approach by the group at Peking University will be reviewed. In particular, axially deformed relativistic Hartree-Bogoliubov approach in Woods-Saxon basis aiming at halo nucleus, time-odd triaxial RMF approach, the adiabatic and configuration-fixed constrained triaxial RMF approaches, a Reflection ASymmetric RMF (RAS-RMF) approach, and a new relati... hiện toàn bộ
Generators of quasiperiodic oscillations with three-dimensional phase space
The European Physical Journal Special Topics - - 2013
A.P. Kuznetsov, S.P. Kuznetsov, E. Mosekilde, N.V. Stankevich
Considering a family of three-dimensional oscillators originating in the field of radio-engineering, the paper describes three different mechanisms of torus formation. Particular emphasis is paid to a process in which a saddle-node bifurcation eliminates a stable cycle and leaves the system to find a stationary state between a saddle cycle and a pair of equilibrium points of unstable focus/stable ... hiện toàn bộ
Ultrafast phenomena from attosecond to picosecond timescales: theory and experiments
The European Physical Journal Special Topics - - 2023
L. Poisson, F. Lépine
Positive solutions for a coupled system of semipositone fractional differential equations with the integral boundary conditions
The European Physical Journal Special Topics - Tập 226 - Trang 3551-3566 - 2018
Dapeng Xie, Chuanzhi Bai, Hui Zhou, Yang Liu
In this paper, we investigate the existence of positive solutions for a system of nonlinear fractional differential equations with sign-changing nonlinearities. The result obtained in this paper essentially improves and extends some well-known results. An example demonstrates the main results.
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