具有吞吐量和时延约束的软件无线电波形部署决策算法

针对当前具有吞吐量和时延约束的软件无线电波形部署决策算法在内存开销方面考虑的不足,提出一个更为通用的波形部署决策系统模型,将波形的处理开销、内存开销和通信带宽开销都纳入到波形部署决策过程中,并设计了一种基于动态规划的波形部署决策算法以最小化波形对平台各种计算资源的占用总和。仿真结果表明,内存对波形部署决策具有重要影响,与未考虑内存开销的解决方案相比,平台支持的平均最大波形数目和平均处理资源利用率均下降40%左右。     

地球模型偏差对远程弹箭弹道仿真的影响及修正

针对地球模型精确度影响远程弹箭弹道仿真的问题,分析了地球模型偏差对弹道仿真精度的影响并加以修正。采用总的地球椭球系,在已有弹道模型的基础上,分析了垂线偏差的产生机理及其对定向定位参数的影响,并由此得出弹道几何偏移随定向偏差的变化规律,研究了引力加速度初值偏差对弹道的误差累积,并对由水准面不平行性造成的实际落点高差进行了理论推导。对比仿真算例表明,考虑地球模型偏差影响的仿真结果与不考虑的情况下差别较明显,在远程条件下对弹道仿真精度的影响不容忽视。     

雷达抗干扰性能评价指标体系及发展趋势

随着现代电子技术的发展,雷达面临着更为复杂的电磁干扰环境,亟需建立一套雷达抗干扰性能评价指标体系来指导雷达ECCM的测试评价工作。介绍了雷达抗干扰指标体系的指导思想和常用指标的选取,分析总结了现有的指标体系。最后,通过对目前研究中存在的问题的分析,预测了抗干扰指标体系未来发展的趋势。     

无人机测控系统Turbo-MAP译码方法

无人机测控数据链系统与地面控制站进行的是遥测数据、侦察图像及遥控指令的传输,因此,高质量的通信是确保无人机数据链发挥效能的关键技术之一。针对无人机信道的特点和要求,研究了无人机信道的Turbo-MAP译码模型,提出一种无人机测控系统Turbo-MAP译码方法,并针对各种参数条件进行了Matlab仿真。实验结果证明,该方法能够保证在发送数据的时候尽量使用长度较长的数据包且增加交织深度,并显著提升译码BER性能。     

地下储油复杂组合空间油气扩散蔓延三维数值模拟

针对地下储油复杂组合空间,采用大涡模拟的方法构建了油气扩散蔓延三维数值模拟模型,完成了油气扩散蔓延区域的空间离散和三维数值模拟求解优化,并进行了数值计算与分析。结果表明,在地下复杂组合受限空间油料泄漏后,罐室内的油气填充顺序为由边缘到出口、由底部到上部,油气不能达到100%的充满状态,罐室拱形顶部油气体积分数低于其爆炸下限的20%;罐室内油气的产生和蔓延十分迅速,从泄漏至到达罐室口仅需10 s,进入坑道仅需1 min;油气在流出罐室进入坑道后,具有迅速向四周扩散蔓延,流向一切可能注入的空间的特性。研究结果为地下储油工程的施工建设、安全管理、危险源监控等提供了有益参考。     

舰船长寿命抗磨汽轮机油研制

根据新型装备大功率、高性能蒸汽轮机动力装置配套用油需要以及目前海军在用汽轮机油存在的问题,参考美军同类产品标准要求制定了舰船汽轮机油新产品技战术指标。通过基础油、添加剂和配方综合配伍,研制出一种舰船长寿命抗磨汽轮机油,并进行了理化性能试验和台架试验。结果表明:研制的舰船长寿命抗磨汽轮机油具有优异的抗氧化、润滑抗磨、腐蚀抑制及破乳化等性能,且与台架试验各机组间的适应性良好,可以满足用油设备的使用要求。     

“Respect” as a personal attribute in the British Army

This article describes the results of research into the social phenomenon of “respect” as framed by junior members of the British Army, as part of a wider study into the Values and Standards of the British Army. This research was interview based, using qualitative analysis software to detect, manage, and draw conclusions from the qualitative data recorded in those interviews. The data indicated that the primary situation in which “respect” was visualised by the participants was the unit context, and that it comprised a combination of three different strands: respect for rank or “hierarchical respect,” “professional respect” for a person's military competence, and “personal respect” for an individual's character, personal behaviour, and attributes. The overall respect that an individual is given arises from the combination of these three areas. “Respect” as a concept was, in the soldiers’ characterisation, something that had to be earned (except for the “given” represented by rank) and was not stable: a person's fund of respect could go up or down in social value. Respect was also linked to trust: the more respect a person had, the more they could be trusted. Although the unit context was the primary one for discussing their framing of the concept of respect, many of the participants reported a wider dimension in which every human being deserves a basic level of respect simply for being human, and this level could not be forfeited.     

Sexual and gender-based violence in the Democratic Republic of Congo

Commitment by the government of the Democratic Republic of Congo to addressing sexual and gender-based violence (SGBV) in the country is reflected in a number of international commitments and national strategies. This article traces the (slow) progress in addressing some of the most important issues relating to SGBV to which the government has committed itself. It argues that unless the underlying gender norms and unequal power relations that form the basis of gender violence, discrimination and inequality in Congolese society are addressed, SGBV will persist.     

Women,peace and security in Africa

This article highlights and critiques the underlying conceptualisations and assumptions of the women, peace and security (WPS) agenda that emerged with the adoption of United Nations Security Council Resolution 1325 in 2000. The main argument is that we need to rethink the WPS agenda to produce more holistic and groundbreaking responses for the types of challenges encountered, i.e., that gender inequality and insecurity are deep rooted and multi-layered, and thus negate mechanistic responses that do not deal with cultural and structural issues. It specifically focuses on gender and peace-making and gender and peacekeeping to point to the pitfalls in the current conceptions and practices in this arena.     

基于领域本体的舰船装备维修保障知识表示研究

针对舰船装备维修保障领域维修保障知识缺乏有效统一管理、共享和重用程度低等问题,将领域本体理论引入维修保障知识管理中,提出了基于全寿命周期的舰船装备维修保障知识本体建模方法。分析舰船装备维修保障领域知识的来源、分类和构成,构建了装备维修保障领域的顶层本体及其概念关系。重点介绍了维修保障知识中故障案例知识的本体建模表示,并提出了基于预检索的全局故障案例知识检索算法,建立了原型系统并应用验证。结果表明:该方法能够解决目前维修保障知识管理中存在的问题,提高了知识检索效率。