scholarly journals Hot electron effects during reactive scattering of H2 from Ag(111): assessing the sensitivity to initial conditions, coupling magnitude, and electronic temperature

2019 ◽  
Vol 214 ◽  
pp. 105-121 ◽  
Author(s):  
Reinhard J. Maurer ◽  
Yaolong Zhang ◽  
Hua Guo ◽  
Bin Jiang

We use an analytical representation of electronic friction for H2 on Ag(111) to assess the validity and robustness of the MDEF method based on TDPT.

2019 ◽  
Vol 10 (4) ◽  
pp. 1089-1097 ◽  
Author(s):  
Yaolong Zhang ◽  
Reinhard J. Maurer ◽  
Hua Guo ◽  
Bin Jiang

Interplay between mode specific electronic friction and surface corrugation determines hot electron effects in H2 scattering on Ag(111).


Chaotic systems behavior attracts many researchers in the field of image encryption. The major advantage of using chaos as the basis for developing a crypto-system is due to its sensitivity to initial conditions and parameter tunning as well as the random-like behavior which resembles the main ingredients of a good cipher namely the confusion and diffusion properties. In this article, we present a new scheme based on the synchronization of dual chaotic systems namely Lorenz and Chen chaotic systems and prove that those chaotic maps can be completely synchronized with other under suitable conditions and specific parameters that make a new addition to the chaotic based encryption systems. This addition provides a master-slave configuration that is utilized to construct the proposed dual synchronized chaos-based cipher scheme. The common security analyses are performed to validate the effectiveness of the proposed scheme. Based on all experiments and analyses, we can conclude that this scheme is secure, efficient, robust, reliable, and can be directly applied successfully for many practical security applications in insecure network channels such as the Internet


2000 ◽  
Vol 85 (8) ◽  
pp. 1718-1721 ◽  
Author(s):  
M. E. Gershenson ◽  
Yu. B. Khavin ◽  
D. Reuter ◽  
P. Schafmeister ◽  
A. D. Wieck

1995 ◽  
Vol 117 (3) ◽  
pp. 582-588 ◽  
Author(s):  
L. N. Virgin ◽  
T. F. Walsh ◽  
J. D. Knight

This paper describes the results of a study into the dynamic behavior of a magnetic bearing system. The research focuses attention on the influence of nonlinearities on the forced response of a two-degree-of-freedom rotating mass suspended by magnetic bearings and subject to rotating unbalance and feedback control. Geometric coupling between the degrees of freedom leads to a pair of nonlinear ordinary differential equations, which are then solved using both numerical simulation and approximate analytical techniques. The system exhibits a variety of interesting and somewhat unexpected phenomena including various amplitude driven bifurcational events, sensitivity to initial conditions, and the complete loss of stability associated with the escape from the potential well in which the system can be thought to be oscillating. An approximate criterion to avoid this last possibility is developed based on concepts of limiting the response of the system. The present paper may be considered as an extension to an earlier study by the same authors, which described the practical context of the work, free vibration, control aspects, and derivation of the mathematical model.


1987 ◽  
Vol 18 (6) ◽  
pp. 25-30 ◽  
Author(s):  
R.S. Petrova ◽  
R.S. Kamburova ◽  
P.K. Vitanov ◽  
E.N. Stefanov

1996 ◽  
pp. 251-254
Author(s):  
Masataka Inoue ◽  
Shin-Ichi Osako ◽  
Shigehiko Sasa ◽  
Kazuyuki Tada ◽  
Tsuyoshi Sugihara ◽  
...  

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