有哪些信誉好的足球投注网站complexity of the international agro-food trade network and its impact on food safety国际农业贸易网络的复杂性及其对食品安全的影响.pdfVIP
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complexity of the international agro-food trade network and its impact on food safety国际农业贸易网络的复杂性及其对食品安全的影响
Complexity of the International Agro-Food Trade Network and Its Impact on Food Safety ´ 1,2 ´ 1 ´ 3 ´ 4 Maria Ercsey-Ravasz , Zoltan Toroczkai , Zoltan Lakner , Jozsef Baranyi * 1 Interdisciplinary Center for Network Science and Applications (iCeNSA) and Department Physics, University of Notre Dame, Notre Dame, Indiana, United States of America, 2 Faculty of Physics, Babes-Bolyai University, RO-400084 Cluj-Napoca, Romania, 3 Department of Food Sciences, Budapest Corvinus University, Budapest, Hungary, 4 Institute of Food Research, Norwich Research Park, Norwich, United Kingdom Abstract With the world’s population now in excess of 7 billion, it is vital to ensure the chemical and microbiological safety of our food, while maintaining the sustainability of its production, distribution and trade. Using UN databases, here we show that the international agro-food trade network (IFTN), with nodes and edges representing countries and import-export fluxes, respectively, has evolved into a highly heterogeneous, complex supply-chain network. Seven countries form the core of the IFTN, with high values of betweenness centrality and each trading with over 77% of all the countries in the world. Graph theoretical analysis and a dynamic food flux model show that the IFTN provides a vehicle suitable for the fast distribution of potential contaminants but unsuitable for tracing their origin. In particular, we show that high values of node betweenness and vulnerability correlate well with recorded large food poisoning outbreaks. Citation: Ercsey-Ravasz M, Toroczkai Z, Lakner Z, Baranyi J (2012) Complexity of the International Agro-Food Trade Network and Its Impact on Food Safety. PLoS ONE 7(5): e37810. doi:10.1371/journal.pone.0037810 Editor: Vittoria Colizza,
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