Results 1 to 10 of about 326,953 (255)

A Comparison of Size, Shape, and Fractal Diversity Between Coral Rubble Sampled From Natural and Artificial Coastlines Around Okinawa Island, Japan

open access: yesFrontiers in Marine Science, 2021
Substrate surface area and fractal complexity have been reported to influence the abundance and diversity of mobile cryptic animal communities. Surfaces with higher fractal dimensions not only offer additional space for colonization, but bias space ...
Giovanni D. Masucci   +6 more
doaj   +1 more source

Complex Spatial Query Processing [PDF]

open access: yesGeoInformatica, 2004
The user of a Geographical Information System is not limited to conventional spatial selections and joins, but may also pose more complicated and descriptive queries. In this paper, we focus on the efficient processing and optimization of complex spatial queries that involve combinations of spatial selections and joins. Our contribution is manifold; we
Mamoulis, N, Papadias, D, Arkoumanis, D
openaire   +3 more sources

A Ubiquitous Collective Tragedy in Transport

open access: yesFrontiers in Physics, 2022
A tragedy of the commons is said to occur when individuals act only in their own interest but, in so doing, create a collective state of a group that is less than optimal due to uncoordinated action.
Rafael Prieto Curiel   +3 more
doaj   +1 more source

Spatially embedded dynamics and complexity [PDF]

open access: yesComplexity, 2010
AbstractTo gain a deeper understanding of the impact of spatial embedding on the dynamics of complex systems, we use a measure of interaction complexity developed within neuroscience using the tools of statistical information theory. We apply this measure to a set of simple network models embedded within Euclidean spaces of varying dimensionality to ...
Christopher L. Buckley   +2 more
openaire   +2 more sources

Entropy, complexity, and spatial information [PDF]

open access: yesJournal of Geographical Systems, 2014
We pose the central problem of defining a measure of complexity, specifically for spatial systems in general, city systems in particular. The measures we adopt are based on Shannon's (in Bell Syst Tech J 27:379-423, 623-656, 1948) definition of information.
Michael Batty   +3 more
openaire   +3 more sources

The study of fractals among ecologists - doi: 10.4025/actascibiolsci.v34i1.7701

open access: yesActa Scientiarum: Biological Sciences, 2011
Fractals seemed to have permeated most scientific fields, including ecology. In fact, biodiversity and ecological processes are affected by spatial complexity, and fractals can help understand patterns at multiple scales.
Roger Paulo Mormul   +1 more
doaj   +3 more sources

Complex delay dynamics on railway networks from universal laws to realistic modelling

open access: yesEPJ Data Science, 2018
Railways are a key infrastructure for any modern country. The reliability and resilience of this peculiar transportation system may be challenged by different shocks such as disruptions, strikes and adverse weather conditions. These events compromise the
Bernardo Monechi   +3 more
doaj   +1 more source

Implications of Panarchy for ecosystem service research: the role of system dynamics in service delivery

open access: yesEcology and Society, 2022
Panarchy illustrates the dynamic nature of social-ecological systems and their nestedness and interconnectedness through time and space. Although there have been great advances in ecosystem service (ES) research, it has only rarely integrated dynamic ...
Klara J. Winkler   +9 more
doaj   +1 more source

How Many Gammas? Redefining Hippocampal Theta-Gamma Dynamic During Spatial Learning

open access: yesFrontiers in Behavioral Neuroscience, 2022
The hippocampal formation is one of the brain systems in which the functional roles of coordinated oscillations in information representation and communication are better studied. Within this circuit, neuronal oscillations are conceived as a mechanism to
Matthieu Aguilera   +4 more
doaj   +1 more source

Spatially Distributed Social Complex Networks [PDF]

open access: yesPhysical Review X, 2014
9 pages, 6 ...
Gerald F. Frasco   +3 more
openaire   +3 more sources

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