基于声诱饵对抗的火箭助飞鱼雷命中概率仿真

针对舰艇使用火箭助飞鱼雷与潜艇对抗的典型样式,分别建立了潜艇自航式声诱饵对抗声自导鱼雷模型、火箭助飞鱼雷对目标提前位置射击参数解算模型、鱼雷运动模型、潜艇机动模型和命中概率计算模型,采用模拟法计算了火箭助飞鱼雷单雷射击和双雷齐射的命中概率,总结了射击距离和潜艇航速对火箭助飞鱼雷命中概率的影响,研究结论可为火箭助飞鱼雷作战使用提供理论指导。     

反舰导弹“双一”攻击最大攻击角计算方法

针对反舰导弹"双一"攻击作战中航路攻击角的制订缺乏定量依据、飞行航路中转弯角影响考虑不足等问题,研究最大攻击角计算方法。从反舰导弹飞行航路的航路点数量、转弯角、航路点间距、航程等方面对约束条件进行建模;提出了以攻击角最大、航程最短为目标函数的双目标规划方法;分析了航路点间距、航路点转弯角之间的关系。最后仿真计算了航路点数量确定与变化两种情况下的最大攻击角。结果表明:随着航路点数量的增加,反舰导弹最大攻击角迅速增大,但对反舰导弹的航程提出了更高要求;若过度追求大攻击角,将难以发挥反舰导弹的射程优势。     

模糊需求下保障设施选址-路径模型及算法

针对装备保障过程中被保障单位需求量不确定的问题,在详细分析保障设施选址-路径相关因素的基础上,利用三角模糊数对需求量进行标定。通过运用模糊综合评价与群决策思想确定保障设施备选址点权重,构建时间满意度函数与惩罚成本函数,建立模糊需求下带有时间窗及容量限制的选址-路径模型,并设计了基于聚类分析与蚁群算法的混合启发式求解算法。通过算例分析验证了模型的正确性及算法的有效性。     

Energy‐efficient scheduling for sustainable manufacturing systems with renewable energy resources

Environmentally friendly energy resources open a new opportunity to tackle the problem of energy security and climate change arising from wide use of fossil fuels. This paper focuses on optimizing the allocation of the energy generated by the renewable energy system to minimize the total electricity cost for sustainable manufacturing systems under time‐of‐use tariff by clipping the peak demand. A rolling horizon approach is adopted to handle the uncertainty caused by the weather change. A nonlinear mathematical programming model is established for each decision epoch based on the predicted energy generation and the probability distribution of power demand in the manufacturing plant. The objective function of the model is shown to be convex, Lipchitz‐continuous, and subdifferentiable. A generalized benders decomposition method based on the primal‐dual subgradient descent algorithm is proposed to solve the model. A series of numerical experiments is conducted to show the effectiveness of the solution approach and the significant benefits of using the renewable energy resources.     

Supply chain coordination with product line design and a revenue sharing scheme

Many manufacturers sell their products through retailers and share the revenue with those retailers. Given this phenomenon, we build a stylized model to investigate the role of revenue sharing schemes in supply chain coordination and product variety decisions. In our model, a monopolistic manufacturer serves two segments of consumers, which are distinguished by their willingness to pay for quality. In the scenario with exogenous revenue sharing ratios, when the potential gain from serving the low segment is substantial (e.g., the low‐segment consumers' willingness to pay is high enough or the low segment takes a large enough proportion of the market), the retailer is better off abandoning the revenue sharing scheme. Moreover, when the potential gain from serving the low (high) segment is substantial enough, the manufacturer finds it profitable to offer a single product. Furthermore, when revenue sharing ratios are endogenous, we divide our analysis into two cases, depending on the methods of cooperation. When revenue sharing ratios are negotiated at the very beginning, the decentralized supply chain causes further distortion. This suggests that the central premise of revenue sharing—the coordination of supply chains—may be undermined if supply chain parties meticulously bargain over it.     

大容量储能发电机并联运行励磁控制算法

大容量储能发电机作为脉冲电源,整流后通过逆变器向大功率脉冲负载供电。采用储能发电机直流侧并联方式工作,可以有效提高系统带载能力与可靠性。当并联运行的储能发电机转速不同时,根据转速合理分配电机释放功率可以有效提高系统工作效能,因此需要设计一种具有功率调节功能的励磁控制算法。在电压、电流双闭环控制的基础上,引入功率前馈控制,推导并求解了前馈功率与励磁电流关系以及控制参数,并根据电机初始转速设计了功率分配算法。仿真试验结果表明,功率前馈控制在励磁控制过程中起主导作用,有效分配储能电机释放功率大小,提高了励磁电流响应速度,抑制了负载功率扰动对励磁控制系统的影响。     

军事安全视角下的军队翻译能力建设

军队翻译能力是军队外语能力的组成部分。军队翻译能力的理论框架包含构成要素、存在形式和转换机制三个组成部分。新的安全形势对我军的翻译保障在广度和深度上都有了新的要求,而军队翻译能力供给相对不足。需要对军队翻译能力进行规划,加强翻译人力资源的储备与管理,提升翻译保障信息化水平。     

谈部队基层干部队伍建设

部队建设的关键在基层,基层建设的关键在中队干部,他们素质的高低直接影响到基层建设的好坏。根据当前消防中队干部队伍的现状,加强基层干部队伍建设的着力点应在于：夯实中队干部思想基础,提高中队干部履职能力,完善中队干部管理措施。     

雷达利用极化信息区分真假目标浅析

首先介绍了电大目标回波信号极化特征和电子假目标信号极化特征,接着探讨了理论上雷达根据极化信息区分电子假目标信号和真实目标回波信号的方法,分析了实际应用中可能存在的困难,说明了这种方法在目前和今后雷达目标识别技术发展中是有实际意义的。最后说明了无论是现在,还是今后,极化信息对于雷达目标识别来说都是一个极其重要的参数。     

基于fMRI的静息状态脑功能复杂网络分析

分析静息状态下人脑中不同区域之间的功能连接模式对研究静息状态下人脑正常功能活动具有重要意义。基于复杂网络理论对脑功能网络进行建模,考察静息状态脑功能网络的结构和拓扑特性。结果显示,网络具有小世界性质和无标度特性。进一步引入一种概率混合模型分析网络社团结构,得到的10个子网络中包含视觉系统、听觉系统、运动系统、默认网络以及与执行和工作记忆相关的脑区。推测出静息状态脑功能网络是由这些相对独立又彼此关联的子网络组成,其中楔前叶和扣带回作为网络的关键节点,在信息调度和传递中占据重要地位。