Nonlinear dynamics of neuromorphic optical system with spatio-temporal interactions

1991 ◽  
Author(s):  
Mikhail A. Vorontsov ◽  
Nikita G. Iroshnikov
Keyword(s):  
Nonlinear Dynamics ◽  
Optical System ◽  
Spatio Temporal ◽  
Temporal Interactions

scholarly journals Video action detection by learning graph-based spatio-temporal interactions

2021 ◽  
Vol 206 ◽  
pp. 103187
Author(s):  
Matteo Tomei ◽  
Lorenzo Baraldi ◽  
Simone Calderara ◽  
Simone Bronzin ◽  
Rita Cucchiara
Keyword(s):  
Action Detection ◽  
Spatio Temporal ◽  
Temporal Interactions

scholarly journals Complex partial synchronization patterns in networks of delay-coupled neurons

2019 ◽  
Vol 377 (2153) ◽  
pp. 20180128 ◽  
Author(s):  
D. Nikitin ◽  
I. Omelchenko ◽  
A. Zakharova ◽  
M. Avetyan ◽  
A. L. Fradkov ◽  
...  
Keyword(s):  
Nonlinear Dynamics ◽  
Temporal Dynamics ◽  
Delay Systems ◽  
Theme Issue ◽  
Partial Synchronization ◽  
Multiplex Network ◽  
Control Scheme ◽  
Non Local ◽  
Spatio Temporal ◽  
Fast Oscillations

We study the spatio-temporal dynamics of a multiplex network of delay-coupled FitzHugh–Nagumo oscillators with non-local and fractal connectivities. Apart from chimera states, a new regime of coexistence of slow and fast oscillations is found. An analytical explanation for the emergence of such coexisting partial synchronization patterns is given. Furthermore, we propose a control scheme for the number of fast and slow neurons in each layer. This article is part of the theme issue ‘Nonlinear dynamics of delay systems’.

Spatio-temporal interactions between Northeast Atlantic Mackerel and its fishery - Simulating different futures

Marine Policy ◽  
2021 ◽  
Vol 133 ◽  
pp. 104740
Author(s):  
Sandra Rybicki ◽  
Katell G. Hamon ◽  
Sarah Simons ◽  
Axel Temming
Keyword(s):  
Northeast Atlantic ◽  
Atlantic Mackerel ◽  
Spatio Temporal ◽  
Temporal Interactions

Socio-Spatial Practice and Racial Representations in a Changing South Africa

2005 ◽  
Vol 35 (3) ◽  
pp. 444-459 ◽  
Author(s):  
Kevin Durrheim
Keyword(s):  
South Africa ◽  
Spatial Practice ◽  
Running Away ◽  
Racial Representations ◽  
Blacks And Whites ◽  
Spatio Temporal ◽  
Temporal Interactions ◽  
Historical Periods

This article argues (a) that the content of racial representations in South Africa has changed historically, and (b) that these representations are grounded in concrete patterns of spatio-temporal interactions between blacks and whites that have characterised different historical epochs. These arguments are developed by means of a consideration of racial interactions and representations in four historical periods: the early Cape colony, the frontier, apartheid and the contemporary post-apartheid period. The bulk of the discussion concerns the kinds of representations that are being developed and perpetuated in the present desegregated context, where whites experience displacement at the hands of blacks, and blacks experience whites running away from them.

scholarly journals Spatio-temporal analysis of socio-economic characteristics for pulmonary tuberculosis in Sichuan province of China, 2006–2015

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Lan Xia ◽  
Sui Zhu ◽  
Chuang Chen ◽  
Zheng-Yuan Rao ◽  
Yong Xia ◽  
...  
Keyword(s):  
Socioeconomic Status ◽  
Standard Deviation ◽  
Sichuan Province ◽  
Age Group ◽  
Spatial Clusters ◽  
Notification Rate ◽  
Standard Deviation Increase ◽  
Temporal Model ◽  
Spatio Temporal ◽  
Temporal Interactions

Abstract Background The disease burden caused by pulmonary tuberculosis (TB) in Sichuan province still persisted at a high level, and large spatial variances were presented across regional distribution disparities. The socio-economic factors were suspected to affect the population of TB notification, we aimed to describe TB case notification rate (CNR) and identify which factors influence TB epidemic are necessary for the prevention and control of the disease in Sichuan province. Methods A retrospective cross-sectional study and an ecological spatial analysis was conducted to quantify the presence and location of spatial clusters of TB by the Moran’s I index and examined these patterns with socio-economic risk factors by hierarchical Bayesian spatio-temporal model. Results A total of 630,009 pulmonary TB cases were notified from 2006 to 2015 in 181 counties of Sichuan province. The CNR decreased year by year since 2007, from 88.70 to 61.37 per 100,000 persons. The spatial heterogeneities of CNR were observed during the study periods. Global Moran’s I index varied from 0.23 to 0.44 with all P-value < 0.001. The Bayesian spatio-temporal model with parametric spatio-temporal interactions was chosen as the best model according to the minimum of Deviance Information Criterion (DIC)(19,379.01), and in which the quadratic form of time was taken. The proportion of age group and education year were all associated with CNR after adjusting the spatial effect, temporal effect and spatio-temporal interactions. TB CNR increased by 10.2% [95% credible interval (CI): 6.7–13.7%] for every 1-standard-deviation increase in proportion of age group and decreased by 23% (95% CI: 13.7–32.7%) for every 1-standard-deviation increase in education year. Conclusions There were spatial clusters of TB notification rate in Sichuan province from 2006 to 2015, and heavy TB burden was mainly attributed to aging and low socioeconomic status including poor education. Thus, it is more important to pay more attention to the elderly population and improve socioeconomic status including promoting education level in Sichuan province to reduce the TB burden.

Sign in / Sign up

Export Citation Format

Share Document