scholarly journals Analysis of the 3-7 October 2000 and 15-24 April 2002 geomagnetic storms with an optimized nonlinear dynamical model

2007 ◽  
Vol 112 (A4) ◽  
pp. n/a-n/a ◽  
Author(s):  
E. Spencer ◽  
W. Horton ◽  
M. L. Mays ◽  
I. Doxas ◽  
J. Kozyra
Keyword(s):  
Geomagnetic Storms ◽  
Dynamical Model ◽  
Nonlinear Dynamical ◽  
Nonlinear Dynamical Model

ASIC Implementation of a Nonlinear Dynamical Model for Hippocampal Prosthesis

2018 ◽  
Vol 30 (9) ◽  
pp. 2472-2499 ◽  
Author(s):  
Zhitong Qiao ◽  
Yan Han ◽  
Xiaoxia Han ◽  
Han Xu ◽  
Will X. Y. Li ◽  
...  
Keyword(s):  
Low Power ◽  
Integrated Circuit ◽  
Large Scale ◽  
Random Number Generator ◽  
Core Area ◽  
Dynamical Model ◽  
Volterra Model ◽  
Nonlinear Dynamical ◽  
The Core ◽  
Nonlinear Dynamical Model

A hippocampal prosthesis is a very large scale integration (VLSI) biochip that needs to be implanted in the biological brain to solve a cognitive dysfunction. In this letter, we propose a novel low-complexity, small-area, and low-power programmable hippocampal neural network application-specific integrated circuit (ASIC) for a hippocampal prosthesis. It is based on the nonlinear dynamical model of the hippocampus: namely multi-input, multi-output (MIMO)–generalized Laguerre-Volterra model (GLVM). It can realize the real-time prediction of hippocampal neural activity. New hardware architecture, a storage space configuration scheme, low-power convolution, and gaussian random number generator modules are proposed. The ASIC is fabricated in 40 nm technology with a core area of 0.122 mm[Formula: see text] and test power of 84.4 [Formula: see text]W. Compared with the design based on the traditional architecture, experimental results show that the core area of the chip is reduced by 84.94% and the core power is reduced by 24.30%.

A nonlinear dynamical model for the dynastic cycle

1996 ◽  
Vol 7 (2) ◽  
pp. 257-271 ◽  
Author(s):  
G. Feichtinger ◽  
C.V. Forst ◽  
C. Piccardi
Keyword(s):  
Dynamical Model ◽  
Nonlinear Dynamical ◽  
Nonlinear Dynamical Model ◽  
Dynastic Cycle
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