Aiming at the problem that normal Particle Swarm Optimization (PSO) algorithm can not approach the best position effectively in dynamic environment, this paper proposes a dynamic PSO algorithm.

针对普通粒子群优化算法难以在动态环境下有效逼近最优位置的问题，提出一种动态粒子群优化算法。

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Aiming at the problem of long refueling time of normal refueling quantity for one aircraft ground pressure refueling system, a new system optimal design method was proposed.

针对某型飞机地面压力加油系统存在的常用加油量加油时间过长的问题，提出了一种新的系统优化设计方案。

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The traditional detect method of adopting acl for DOS can not identify the attack aiming at the fake address and application layer, and easily made the server cannot apply the normal service for user.

对分布式拒绝服务攻击的防护，传统的方法是采用路由访问控制列表过滤的防护方法，无法识别虚假地址和针对应用层的攻击，而且容易造成服务器无法向外部提供正常的服务。

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