Spatial Chaos in Bistable Optical Arrays

Author(s):  
W. J. Firth
Keyword(s):  
1988 ◽  
Vol 49 (C2) ◽  
pp. C2-451-C2-454
Author(s):  
W. J. FIRTH
Keyword(s):  

2004 ◽  
Vol 14 (08) ◽  
pp. 2655-2665 ◽  
Author(s):  
LARRY TURYN

We consider a Cellular Neural Network (CNN), with a bias term, on the integer lattice ℤ2in the plane ℝ2. Space-dependent, asymmetric couplings (templates) appropriate for CNN in the hexagonal lattice on ℝ2are studied. We characterize the mosaic patterns and study their spatial entropy. It appears that for this problem, asymmetry of the template has a more robust effect on the spatial entropy than does the sign of a parameter in the templates.


2005 ◽  
Vol 25 (2) ◽  
pp. 367-378
Author(s):  
Papri Saha ◽  
B. Rakshit ◽  
A. Roy Chowdhury

2008 ◽  
Vol 38 (3) ◽  
pp. 631-640 ◽  
Author(s):  
Fuyan Sun ◽  
Shutang Liu ◽  
Zhongqin Li ◽  
Zongwang Lü

Land ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 276 ◽  
Author(s):  
Dorota Mantey ◽  
Wojciech Pokojski

The article is dedicated to the phenomenon of spatial chaos in the suburban areas of Polish cities, which, due to uncontrolled scattering of buildings (urban sprawl), require urgent retrofitting. These activities should contribute to the gradual densification of buildings and the more frequent functioning of suburbanites in the local environment, close to the place of residence. The authors claim that the retrofitting of suburbs can be accomplished by impacting two dimensions of spatial chaos: limited pedestrian mobility around the place of residence (walkability) and low access to basic services. The article proposes a set of ten indicators and a synthetic index of spatial chaos that allow measuring the level of disorder in particular suburbs, and therefore on a smaller scale than a municipality, and at the same time refer to the features of the living environment typical of Polish suburbs. These indicators are a direct reference to the abovementioned dimensions of suburban spatial chaos and allow to estimate the degree of compactness of suburban settlements in its functional aspect. The research proved that the more sprawl-like features, the higher the level of spatial disorder.


2011 ◽  
Vol 106 (23) ◽  
Author(s):  
Iryna Omelchenko ◽  
Yuri Maistrenko ◽  
Philipp Hövel ◽  
Eckehard Schöll

Land ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 461
Author(s):  
Anna Majewska ◽  
Małgorzata Denis ◽  
Wioleta Krupowicz

This paper investigates the phenomenon of spatial chaos in Poland resulting from urban sprawl. The phenomenon is particularly visible in the case of suburban small cities which, in contrast to cities in the EU-15 countries with similar populations, are expanding excessively, causing a growth of urbanized areas exceeding several times the growth of their population. Suburbs of these cities increasingly resemble a badly played Tetris game. The selected study area consists of several cities in the Warsaw suburban zone where an increased dynamic of these processes can be observed. The paper presents detailed studies concerning the selected representative small cities. The morphology of urban tissue was studied as a marker of spatial order including: development intensity, street grid, plots parameters, presence of technical infrastructure, and distance from the functional city center. The analyses were performed based on cartographic archives, the data of the Central Statistical Office of Poland, topographic database and Kernel Density Estimation. ArcGIS ESRI and AutoCad software was used to present the study results. The conducted studies intend to diagnose the changes in the spatial layout in the context of the objectives of spatial order and sustainable development, and to define the indicators which should be taken into account in spatial planning documents drawn up for the studied areas.


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