Search results for "scale-free network"

showing 2 items of 2 documents

Structural analyses of a hypothetical minimal metabolism

2007

By integrating data from comparative genomics and large-scale deletion studies, we previously proposed a minimal gene set comprising 206 protein-coding genes. To evaluate the consistency of the metabolism encoded by such a minimal genome, we have carried out a series of computational analyses. Firstly, the topology of the minimal metabolism was compared with that of the reconstructed networks from natural bacterial genomes. Secondly, the robustness of the metabolic network was evaluated by simulated mutagenesis and, finally, the stoichiometric consistency was assessed by automatically deriving the steady-state solutions from the reaction set. The results indicated that the proposed minimal …

GeneticsComparative genomicsModels StatisticalCellsScale-free networkMetabolic networkRobustness (evolution)Computational biologyMetabolismBacterial genome sizeBiologyNetwork topologyModels BiologicalGeneral Biochemistry Genetics and Molecular BiologyCell Physiological PhenomenaCluster AnalysisComputer SimulationMinimal genomeGeneral Agricultural and Biological SciencesMetabolic Networks and PathwaysResearch ArticlePhilosophical Transactions of the Royal Society B: Biological Sciences
researchProduct

Propagation of Bankruptcy Risk over Scale-Free Economic Networks.

2022

The propagation of bankruptcy-induced shocks across domestic and global economies is sometimes very dramatic; this phenomenon can be modelled as a dynamical process in economic networks. Economic networks are usually scale-free, and scale-free networks are known to be vulnerable with respect to targeted attacks, i.e., attacks directed towards the biggest nodes of the network. Here we address the following question: to what extent does the scale-free nature of economic networks and the vulnerability of the biggest nodes affect the propagation of economic shocks? We model the dynamics of bankruptcies as the propagation of financial contagion across the banking sector over a scale-free network…

financial contagion; bankruptcy risk; scale-free networks; targeted attacks; Shannon entropyscale-free networkShannon entropyGeneral Physics and Astronomytargeted attackfinancial contagionbankruptcy riskEntropy (Basel, Switzerland)
researchProduct