Diversity-induced resonance, the emergence of coherent spatiotemporal patterns at intermediate parameter disorder, is a well-known phenomenon in lattices of excitable elements. Here we study the pattern events behind diversity-induced resonance in a lattice of coupled FitzHugh-Nagumo...

Modules are common functional and structural properties of many social, technical and biological networks. Especially for biological systems it is important to understand how modularity is related to function and how modularity evolves. It is known that time-varying or spatially organized goals...

Recently, Kearns et al. [Kearns, M., Suri, S. and Montfort, N., An experimental study of the coloring problem on human subject networks, Science 313 (2006) 824–827] studied the topology dependence of graph coloring dynamics. In their empirical study, the authors analyze, how a network of human...

Genome signatures are statistical properties of DNA sequences that provide information on the underlying species. It is not understood, how such species-discriminating statistical properties arise from processes of genome evolution and from functional properties of the DNA. Investigating the...

Excitable media dynamics is the lossless active transmission of waves of excitation over a field of coupled elements, such as electrical excitation in heart tissue or nerve fibers, cAMP signaling in the slime mold Dictyostelium discoideum or waves of chemical activity in the...

We study the effect of topology variation on the dynamic behavior of a system with local update rules. We implement one-dimensional binary cellular automata on graphs with various topologies by formulating two sets of degree-dependent rules, each containing a single parameter. We observe that...

Summary This paper presents an institutional analysis of the underlying factors affecting the performance of community-based drinking water organizations in rural Costa Rica. More than 1,000 of these organizations provide water to 60% of the rural population and show great disparity in their...

This paper presents an institutional analysis of the underlying factors affecting the performance of drinking-water community organizations in rural areas of Costa Rica. These organizations provide water to more than 60 percent of the total rural population. There is, however, a great disparity...

To what extent is trust in governance procedures a precondition for public engagement? This work is based on ethnographic research that examined the relationship between regulators and residents in the major chemical and petrochemical centres of Grangemouth (Scotland) and Ludwigshafen (Germany)....

This paper analyses people's decision to snatch flowers which are marketed via the honour system. If people were to make a narrow rational choice that they would snatch the unattended flowers, the market would collapse. We find that actual payment rates vary substantially between individuals....