Bet365 lotto review Researchers from Pennsylvania Pennsylvania discovered，Complex and diversified supply chain can actually better protect cities from affecting the impact of external pressure。

Alfonso Mejia, associate professor of civil and environmental engineering in Pennsylvania, Pennsylvania, said，Study shows，If the supply chain is too complicated，It will bring a lot of problems。but，In nature，Bet365 lotto review This situation is exactly the opposite。In the ecosystem，There is a close relationship between complexity and elasticity。Simply put，More diverse complexity，It is a good thing for nature。Diversity of ecosystems can better complete tasks，Make us face wildfire、During the flood and other natural disasters，Not so fragile。It can be said，Multiple species do the same thing in different ways，It can make the ecosystem better cope with impact，Even if a species disappears，Other species can also make up for。We think，Things learned from nature can be applied to the human system。

bet365 Play online games Researchers study the supply chain in this context，Check whether the complexity of the supply chain system (purchasing products from different suppliers) can make the city more flexible。​​For this，Meija and others studied data from the Ministry of Transport and Energy from 2012 to 2015，These data include the flow of goods category in 39 products in 69 major cities in the United States。Researchers have developed an algorithm to analyze the impact of the two complexity indicators in the flow: first, the diversity of resources required by the product; second, the number of Bet365 app download products entering the city。Results show，Cities with a variety of supply chains (from wide domestic and international suppliers)，It seems to be able to better resist the impact。The population is 100,000 to 500,000 medium -sized cities，The potential benefits brought by the complexity of the supply chain are the most obvious。

Meijia said，Like New York、Big cities like Chicago，Due to large scale，Low dependence on specific supplier partners，It is less affected by the interruption of the supply chain。But when medium -sized cities need to be purchased,，Bet365 app download Evil damage caused by lack of diversity。

　　（Zhao Qi/Compilation）