Omori Law after Large-Scale Destruction of Production Network
Omori Law after Large-Scale Destruction of Production Network
复制标题
大规模破坏生产网络后的大森法
DOI：
10.1143/ptps.194.158
复制
发表时间：
2012
影响因子：
--
通讯作者：
Y. Fujiwara
中科院分区：
文献类型：
--
作者：
Wang;X.;Kato;H.;Shibasaki;R.;河野哲也;Y. Fujiwara
1995年科比和2011年东日本两次大地震后，制造商-客户网络发生了大规模的破坏。这些主要的和外来的冲击在生产网络上传播，造成了次级影响，导致连锁破产。通过对主要受损企业或区域经济的邻近破产数据的分析，我们证明了邻近破产的数量服从大森定律，即幂律松弛。这一发现意味着，从生产网络的巨大冲击中恢复过来的速度比人们天真地预期的要慢得多。
After the two giant earthquakes, Kobe 1995 and East Japan 2011, a large-scale destruction took place on supplier-customer network. These primary and exogenous shocks were propagated on the production network, which caused a secondary effect resulting in chained bankruptcies. By employing data of bankrupcies occuring in a neighbor to the primarily damaged firms or regional economy, we show that the number of neighboring failures obeys a Omori law, a power-law relaxation. This finding implies that the recovery from such a huge shock on production network is much more sluggish than one can naively expect.