新疆高校师资结构现状及优化分析

师资队伍建设是高校整体建设的永恒主题。如何使师资队伍能适应社会主义市场经济发展的需要,如何使师资队伍具有最佳结构,这是我们亟待研究和解决的问题。本文分析了新疆高校师资结构现状和存在的问题及其主要原因,提出了优化新疆高校师资队伍结构的思路。     

军事冲突中战术欺骗的一个优化模型

军事冲突中实施战术欺骗已成为信息战的一个重要手段.基于军事冲突中战术欺骗所要达到的目标以及欺骗手段的资源约束和效果影响,建立了一个使军事欺骗总体效能达到最大的战术欺骗优化模型.给出的一个应用例子说明了该模型和方法的可行性.     

基于遗传模拟退火算法的空袭兵力分配及优化

对遗传模拟退火算法中的交叉、变异操作进行了改进,并实施了最优保留策略,形成了改进遗传模拟退火算法.以突击效果最大化和兵力损失最小化为目标函数,以空袭兵力总量的限制、空袭兵器挂载类型的限制等为约束条件,建立了空袭兵力分配及优化模型.在考虑兵力分配模型特点的基础上,利用改进遗传模拟退火算法求解.通过与多目标数学规划和标准遗传算法优化进行的比较表明,该方法能够有效地解决带约束的多目标优化问题.     

某型大口径狙击步枪闭锁系统优化设计

对某型大口径狙击步枪的闭锁系统进行优化分析,利用三次样条曲线得出了合理的机头开闭锁曲线,以及优化的导气装置和闭锁机构结构参数,其结果为进一步改进该枪的结构参数提供了理论依据。     

混合电推进能源管理系统模糊逻辑控制

针对混合电推进能源管理方法开展研究,设计了一种基于模糊逻辑控制的混合电推进能源管理系统。通过设置垂直起降飞行器的功率要求、内燃机-发电机输出功率和储能电池荷电状态的模糊隶属度函数,动态最优分配发电机与储能电池的功率输出,从而提升系统的燃油经济性与飞行器的航程。结合模型设置,对100 kg级的垂直起降转平飞的飞行器能源系统变化进行仿真计算,验证了能源控制算法的可行性。结果表明：基于模糊逻辑控制的能源管理方法,在总时长约为1.2 h的飞行过程中,内燃机约有1 h的时间工作在比油耗最低的区域,从而提升了混合电推进系统的能量利用效率。研究为后续混合电推进系统的能源高效控制与管理提供了设计思路和分析方法。     

Dynamic policy for idling time preservation

This study aims to determine and evaluate dynamic idling policies where an agent can idle while some customers remain waiting. This type of policies can be employed in situations where the flow of urgent customers does not allow the agent to spend sufficient time on back-office tasks. We model the system as a single-agent exponential queue with abandonment. The objective is to minimize the system's congestion while ensuring a certain proportion of idling time for the agent. Using a Markov decision process approach, we prove that the optimal policy is a threshold policy according to which the agent should idle above (below) a certain threshold on the queue length if the congestion-related performance measure is concave (convex) with respect to the number of customers present. We subsequently obtain the stationary probabilities, performance measures, and idling time duration, expressed using complex integrals. We show how these integrals can be numerically computed and provide simpler expressions for fast-agent and heavy-traffic asymptotic cases. In practice, the most common way to regulate congestion is to control access to the service by rejecting some customers upon arrival. Our analysis reveals that idling policies allow high levels of idling probability that such rejection policies cannot reach. Furthermore, the greatest benefit of implementing an optimal idling policy occurs when the objective occupation rate is close to 50% in highly congested situations.     

螺线管磁场性能的优化

采用正反“单匝”线圈优化螺线管轴向磁场的均匀性和陡化端口磁场的下降沿。计算和实验研究表明,该方法明显改善磁场的均匀性和端口磁场的下降沿。     

公用齿轮变位系数的计算机辅助优化选取

本文分析了影响公用齿轮变位系数选取的因素,提出了变位系数选取的基本原则,建立了优化计算模型,编制了计算程序,对例题的计算表明,计算结果和效率优于查表法。     

战场抢修器材最优筹措

建立了一个根据携带抢修器材的能力限制,综合分配参战部队应准备的各种抢修器材使平均战场抢修时闻最短的最优化模型,为制定战时抢修器材筹措计划、抢修人员的培训计划提供依据。该模型的结果也可为评价装备的战斗恢复力提供参考依据。     

The danger of “hybrid warfare” from a sophisticated adversary: the Russian “hybridity” in the Ukrainian conflict

The term “hybrid warfare” is a new one that the West began to use to explain its failure to cope with asymmetric threats. Focusing on the war on global terrorism, the West temporarily withdrew its attention from traditional adversaries, such as Russia, which has used this gap and has audaciously returned to the stage as a global actor. Until the Russian annexation of the Crimean Peninsula in 2014 and inflaming the Ukrainian crisis, most Western authors attributed “hybrid threats” mostly to non-state actors. But the Ukrainian scenario showed the true face of “hybridity” in the modern battlefield when practised by a powerful state actor. Russian “hybrid warfare” in Ukraine has already been seen as a combination of conventional and unconventional methods, that have been complemented with other instruments of national power – diplomatic, economic and information. The purpose of this article is, through an analysis of the Ukrainian scenario, to demonstrate that although the term “hybrid” is new, the concept itself is old and is a continuation of already seen doctrine from the Cold War era. Although “hybrid threats” can come both from state and non-state actors, the Russian interference in Ukraine is proof that they are especially dangerous for the West if, or when, they are initiated from a traditional, sophisticated adversary that has the capacity to use all forms of warfare.