电传动装甲车辆负载功率预测实时能量管理策略

针对电传动装甲车辆负载功率预测功能缺失导致控制作用滞后的问题,提出一种具有较高负载功率预测精度的实时能量管理策略。在分析整车结构的基础上,采用理论分析和数据拟合方法,建立各动力源数学模型。将差分自回归移动平均模型和自适应马尔可夫链两种预测方法相结合,设计非平稳趋势性负载功率组合预测方法。在非线性模型预测控制框架下,构建多目标优化函数,采用序列二次规划法在有限时域内实时求解最优控制指令,优化多动力源协调控制过程。依托硬件在环仿真平台进行多路面行驶实验,对比有无功率预测的能量管理控制效果。结果表明,改进的实时能量管理策略对未来负载功率具有较好的预见性,能够显著优化多动力源协调控制过程,提升车辆燃油经济性,稳定母线电压和电池荷电状态,对传统模型预测控制下的工程应用场景具有一定借鉴意义。     

Classical geopolitics,realism and the balance of power theory

Since the end of World War II, classical geopolitics as a particular form of realism has been disengaged from the development of mainstream realist theories. This disengagement has not only concealed the value of classical geopolitics as a framework of analysis for policy and strategy, but also created an increasing rift between theory and policy in contemporary realist theories. This paper seeks to reengage classical geopolitics with mainstream realist theories by clarifying its realist traits and analytical characteristics, (re)stating its core propositions and probing into its potential contribution to the development of mainstream realist theories. This paper contends that classical geopolitics, while having a distinctive pedigree, can arguably be considered an integral part of the family of realist theories in view of its basic theoretical assumptions concerning international anarchy, the unit of analysis and power politics. As a framework of analysis, classical geopolitics incorporates three interrelated strategic propositions. Those three propositions not only constitute the theoretical core of classical geopolitics, but also manifest a peculiar balance-of-power conception that is essentially distinct from those proposed by mainstream realist theories. This paper argues that those three propositions combined promise to fill in prominent lacuna in the balance-of-power research programme, and also have significant implications for contemporary world politics.     

武警部队机关干部工作精力与体质要求分析

运用问卷法和测试法对武警部队机关工作人员身体生物现象进行分析,详细论述了脑力工作对人体生理、心理的要求。指出：健康的体魄是新型部队机关人才构成的要素,体育锻炼是人体机能改善由量变到质变的过程。     

Hazard evaluation of ignition sensitivity and explosion severity for three typical MH2 (M＝Mg,Ti, Zr) of energetic materials

MgH2, TiH2, and ZrH2 are three typical metal hydrides that have been gradually applied to composite explosives and propellants as additives in recent years. To evaluate ignition sensitivity and explosion severity, the Hartmann device and spherical pressure vessel were used to test ignition energy and ex-plosion pressure, respectively. The results showed that the ignition sensitivity of ZrH2, TiH2 and MgH2 gradually increased. When the concentration of MgH2 is 83.0 g/m3 in Hartmann device, the ignition energy attained a minimum of 10.0 mJ. The explosion pressure of MgH2 were 1.44 times and 1.76 times that of TiH2 and ZrH2, respectively, and the explosion pressure rising rate were 3.97 times and 9.96 times that of TiH2 and ZrH2, respectively, through the spherical pressure vessel. It indicated that the reaction reactivity and reaction rate of MgH2 were higher than that of TiH2 and ZrH2. In addition, to conduct in-depth theoretical analysis of ignition sensitivity and explosion severity, gas production and combus-tion heat per unit mass of ZrH2, TiH2 and MgH2 were tested by mercury manometer and oxygen bomb calorimetry. The experimental results revealed that MgH2 had a relatively high gas production per unit mass (5.15 mL/g), while TiH2 and ZrH2 both had a gas production of less than 2.0 mL/g. Their thermal stability gradually increased, leading to a gradual increase in ignition energy. Furthermore, compared with theoretical combustion heat, the combustion ratio of MgH2, TiH2 and ZrH2 was more than 96.0%, with combustion heat value of 29.96, 20.94 and 12.22 MJ/kg, respectively, which was consistent with the explosion pressure and explosion severity test results.     

Transforming Mexico’s energy field: the intended consequences of a drug war

ABSTRACT

By utilizing the theory of Strategic Action Fields (SAFs), the present article explains how a new meso-level social order seems to have emerged in Mexico as a result of the paramilitarization of organized crime, militarization of security, and the opening of Mexico’s energy sector to private investment. This work describes the transformation of Mexico’s energy field after a process of major constitutional and economic changes that were the consequence of a security crisis and an agenda of energy reform for which the so-called ‘drug war’ was a key underlying foundation.     

双模圆锥喇叭单孔战损补片修复方法研究

由于馈源损伤对雷达对抗装备天线性能影响严重,且其修复效果决定天线性能恢复程度,因此,需要研究出较为有效的馈源修复方法.基于高频电磁场分析方法,针对雷达对抗装备馈源单孔损伤模式,运用现有战场抢修手段,通过FEKO软件模拟修复及仿真分析,探讨研究馈源单孔损伤补片修复方法.通过大量的模拟修复以及仿真分析,总结出馈源单孔损伤战场补片修复的一般原则.     

地空导弹对地面的附带损伤问题研究

研究了地空导弹爆炸时战斗部破片对地面人员附带损伤的问题,选取了破片对人体的杀伤准则,通过分析破片的空中运动特性,对导弹战斗部爆炸时的破片飞散规律进行了探讨,建立了破片散布的数学模型,并在典型的给定计算条件下进行了仿真分析.仿真结果表明,地空导弹在不同高度爆炸时,可计算出对地面人员的有效杀伤破片数量、破片杀伤面积和平均密度以及导弹的安全高度.     

Regional integration and nuclear energy in Africa

African states are hampered by unreliable electric energy that has not complemented economic development efforts. Recently, several African states announced plans to pursue nuclear energy in the future. However, several challenges remain for these states, notably insecurity and financial deficiencies. This paper proposes the use of regional integration arrangements to address these challenges faced by African states, as a way of complementing other efforts enabling African states to obtain nuclear energy. The existence of these arrangements and their institutional mechanisms can enable African states to enhance security and cost-effectively develop nuclear power infrastructure.     

NUCLEAR POWER IN THE MIDDLE EAST:

With the exception of Iran, no Middle Eastern state has an operating nuclear power reactor. Several states, including the United Arab Emirates, Saudi Arabia, Qatar, Kuwait, Israel, Syria, Jordan, Turkey, and Egypt are considering constructing such reactors; some have even taken steps towards commencing nuclear power projects. There exist, however, considerable economic, technical, safety, and security challenges to achieving these goals, many of which are acute in the Middle East region. Regional and international cooperation on nuclear technology could not only help regional states meet their energy objectives, but it could also help to build trust among states as a basic step towards a future Middle East Weapons of Mass Destruction-Free Zone.     

ATOMS FOR PEACE

Atomic Assistance: How “Atoms for Peace” Programs Cause Nuclear Insecurity, by Matthew Fuhrmann, Cornell University Press, 2012, 344 pages, $29.95.