Modelling the Spatial Spread of Wolbachia Bacteria in Mosquitoes Minsu Kim Erasmus Mundus Masters in Complex Systems University of Warwick Wolbachia is a maternally inherited, intracellular bacteria that causes a number of abnormalities in their host’s reproductive system. Recent studies show that infecting mosquito populations with Wolbachia is a promising new strategy for controlling diseases...

This paper presents a novel approach called Spread Histogram for calculation of spatial relations between objects. It allows to determine such relations as INSIDE, OUTSIDE, ENCOMPASS. Additionally, the method cooperates very well with standard histogram methods like Histogram of Angles for determining the directional spatial relations.

Rift Valley fever (RVF) is a severe viral zoonosis in Africa and the Middle East that harms both human health and livestock production. It is believed that RVF in Egypt has been repeatedly introduced by the importation of infected animals from Sudan. In this paper, we propose a three-patch model for the process by which animals enter Egypt from Sudan, are moved up the Nile, and then consumed at...

We analyze how spatial heterogeneity in host density affects the advance of vector-borne disease. Infection requires vector infestation. The vector spreads only between hosts occupying the same neighborhood, and the number of hosts varies randomly among neighborhoods. Simulation of a spatially detailed model shows that increasing heterogeneity in host abundance reduces pathogen prevalence. Clum...

What are the shape and size of the region in primate V1 that processes information from a single point in visual space? This region, a fundamental property termed cortical point image (CPI) (McIlwain 1986), represents the minimal population of V1 neurons that can be activated by a visual stimulus and therefore has important implications for population coding in the cortex. Previous indirect att...

We present a lattice gas cellular automaton (LGCA) to study spatial and temporal dynamics of an epidemic of SIR (susceptible-infected-removed) type. The automaton is fully discrete, i.e. space, time and number of individuals are discrete variables. The automaton can be applied to study spread of epidemics in both human and animal populations. We investigate effects of spatial inhomogeneities in...

Genetic variation in dispersal ability may result in the spatial sorting of alleles during range expansion. Recent theory suggests that spatial sorting can favour the rapid evolution of life history traits at expanding fronts, and therefore modify the ecological dynamics of range expansion. Here we test this prediction by disrupting spatial sorting in replicated invasions of the bean beetle Cal...

Spatial channel modeling is critical in realizing the full potential of antenna arrays in applications such as radar, sonar, and wireless communications. The spatial channel in these applications is typically characterized by complex signal scattering leading to multiple signal components arriving at the array from a spread of angles. This multipath angle spread is well known to lead to loss of...

This study examines the problem of disease spreading and containment in spatial networks, where the computational model is capable of detecting disease progression to initiate processes mitigating infection spreads. This paper focuses on disease spread from a central point in a 1 x 1 unit square spatial network, and makes the model respond by trying to selectively decimate the network and there...

Vitaly Belik,* Theo Geisel, and Dirk Brockmann Max Planck Institute for Dynamics and Self-Organization, Göttingen, Germany Faculty of Physics, University of Göttingen, Göttingen, Germany Northwestern Institute on Complex Systems, Northwestern University, Evanston, Illinois, USA Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, Illinois, USA (Received...