CAJ | 학술논문

袭击策略是复杂网络抵制级联故障的鲁棒性问题中一个重要的研究内容。根据节点局域信息的初始负荷，考虑邻居节点的平均度，提出了一种新的级联故障袭击策略——邻居节点平均度(NAD)策略。理论分析了关键阈值TC与可调参数α之间的关系，并通过数值模拟对比两种经典的袭击策略，研究发现针对单层网络结构，提出的NAD袭击策略对BA无标度网络攻击最有效。此外，基于BA-BA网络构成的多层耦合网络级联故障模型，最大平均度袭击策略数值模拟得出的结果较好地验证了已有理论解析结果。通过建立突发事件关联耦合网络模型，以上研究能够揭示系统发生级联故障的条件，从而提出预防耦合网络崩溃的保护策略。
습격책략시복잡망락저제급련고장적로봉성문제중일개중요적연구내용。근거절점국역신식적초시부하，고필린거절점적평균도，제출료일충신적급련고장습격책략——린거절점평균도(NAD)책략。이론분석료관건역치TC여가조삼수α지간적관계，병통과수치모의대비량충경전적습격책략，연구발현침대단층망락결구，제출적NAD습격책략대BA무표도망락공격최유효。차외，기우BA-BA망락구성적다층우합망락급련고장모형，최대평균도습격책략수치모의득출적결과교호지험증료이유이론해석결과。통과건립돌발사건관련우합망락모형，이상연구능구게시계통발생급련고장적조건，종이제출예방우합망락붕궤적보호책략。
Recently the attack strategy has become a hot topic to study the robustness against cascading failures in complex networks. Considering a node’s initial load and the average degree of the neighboring nodes, we propose a new attack strategy, neighbor-nodes average degree (NAD), and analyze the correlation between the critical threshold T C and tunable parameterα. By comparing the two attack strategies on the nodes with the highest load and the lowest load, we find that the proposed attack strategy is an efficient way to destruct the BA scale-free networks in the range ofα. In addition, on the base of the model of BA-BA coupled networks, the preliminary numerical simulation on the proposed attack strategy verifies the mathematic analysis of the targeted-attack to random-attack. By creating a model of the correlated coupled networks for the emergency, we can investigate the condition on cascading failure for the model and propose a protective strategy for preventing avalanche of coupled networks.