甲午海战中日指挥员素质之比较

军事战役战术指挥员素质对一场战争的胜负起着至关重要的作用.在1894年的中日甲午海战中,清朝北洋水师以全军覆灭而告终,如此惨败的重要原因之一就是清军的战役战术指挥员的素质同日本海军相比差距甚大.不仅在思想素质、军事素质、科文素质不如日本海军,就是在身体素质和心理素质方面也相形见绌.     

基于“公共平台”的炮兵营作战行动模型构件开发

目前军事行动越来越多的是在联合作战环境下展开的,联合作战仿真需要具有良好可重用性的模型。而按统一的标准进行模型开发是必需的选择,因此,引进构件技术,实现军事模型的构件化开发是实现联合作战仿真的唯一途径。     

组合评价方法的装备维修性定性指标综合评价

针对在新型装甲装备设计阶段对其维修性进行综合评价的需求,结合装备设计阶段的其维修性指标验证与评价的特点,构建了基于设计阶段的装备维修性综合评价定性指标体系,通过分析线性加权与非线性加权两种综合评价方法的特点,提出了利用两种方法组合对装甲装备维修性进行综合评价的方法,并将该方法应用于实例验证,所得结果与物理样机的实验结果一致,证明了本方法的可行性和科学性,对基于设计阶段的新型装甲装备维修性综合评价有重要参考价值。     

面向射频指纹识别的高效IQ卷积网络结构

现有应用于射频指纹识别的卷积网络对时序同相正交(in-phase and quadrature-phase, IQ)信号的处理都是将其简单视为图像进行的,存在识别准确率低和计算量大的问题。针对以上问题,提出了一种基于IQ相关特征的卷积神经网络结构。该网络分步提取了IQ相关特征及时域特征,通过自适应平均池化获得了各通道特征均值,并用单个全连接层进行分类。实验结果表明,较传统卷积网络结构,所提网络在多种场景下的识别准确率更高,并且计算量更小。     

炮兵侦察校射无人机连续定位校射的应用分析

炮兵部队是对面目标进行压制的有力武器,利用无人机定位校射系统,在短时间内实现对多目标的连续定位校射,使炮兵对面目标的支撑点进行有效地射击,达到拔点毁面的基础上提战术目的.对目前无人机定位校射系统的现状进行了综述,对实现连续定位校射存在的问题进行了深入的分析,在此提出了相应的解决办法.     

鱼雷非线性姿态系统的自适应反演控制

以鱼雷姿态角为输出量,将鱼雷非线性模型转换为输入输出动态和内部零动态两个部分.通过数值计算,确定了零动态的稳定性.对输入输出动态设计了反演控制律,将参数自适应调整与变结构控制相结合,简化了切换函数的设计.仿真结果表明,所设计的控制方法消除了模型参数扰动的影响,使鱼雷姿态角具有良好的控制效果,同时使非线性模型中的其他状态变量保持稳定.     

8031单片机在氩气自动焊接过程中的应用

在焊接流水线过程中,应用单片机进行控制,目前国内尚不多见。本文介绍了使用单片机控制氩气焊枪的方法,实现了焊接过程自动化,提高了产品质量和工作效率。本文对于单片机在工业上的实际应用具有一定的参考价值。     

On fair designs of cross-chain exchange for cryptocurrencies via Monte Carlo simulation

Cryptocurrency is one of the earliest and the most successful applications of blockchain, and it utilizes the distributed ledger, which is a commonly used technique in blockchain, to make a decentralized transaction within the blockchain of a cryptocurrency. However, how to make a decentralized transaction of cryptocurrencies between parties on different blockchains, that is, the cross-chain exchange, is not well-studied. In this paper, we develop a new method to make cross-chain exchanges based on the classical atomic swap. We first study the optionality embedded into the atomic swap and propose to add a premium into the atomic swap, and then design a new procedure with the premium to guarantee the fairness of the cross-chain exchange. We also provide an algorithm based on the least-squares Monte Carlo method to estimate the premium and analyze the convergence of the algorithm. Moreover, we study the cross-chain exchange with margin trading. We propose an adapted exchange procedure to make a fair cross-chain exchange and an algorithm to estimate the fair premium under the margin trading. Numerical experiments are provided to show the effectiveness of the algorithms.     

Performances and direct writing of CL-20 based ultraviolet curing explosive ink

A new type of explosive ink formulation that can be quickly cured was prepared with unsaturated polyester as binder,styrene as active monomer,2,4,6-trimethylbenzoyl-diphenylphosphine oxide as photoinitiator,and hexanitrohexaazaisowurtzitane (CL-20) as the main explosive.Then the explosive ink direct writing technology was used to charge the micro-sized energetic devices,the curing mechanism of the explosive ink was discussed,and the microstructure,safety performance and explosive transfer performance of the explosive ink molded samples were tested and analyzed.Results indicate that the composite material has a fast curing molding speed,its hardness can reach 2H within 8 min.The crystal form of CL-20 in the molded sample is still ε type.The CL-20 based W-curing explosive ink formulation has good compatibility,its apparent activation energy is increased by about 3.5 kJ/mol.The composite presents a significant reduction in impact sensitivity and its characteristic drop height can reach 39.8 cm,which is about 3 times higher than the raw material.When the line width of charge is 1.0 mm,the critical thickness of the explosion can reach 0.015 mm,and the explosion velocity is 7129 m/s when the charge density is 1.612 g/cm3.