《军事语言研究》创刊实践及其发展战略

军事语言学的确立,填补了我国军事学学科体系中的一项空白,具有开创性的意义。《军事语言研究》学术期刊的创办,必将把这一新兴学科推向新的发展阶段。创办《军事语言研究》学术期刊,有其进行理论研究和推进部队现代化建设的现实需要。基于一年多的办刊实践,从注重创新性、突出办刊特色、不断拓展和延伸刊物内涵三个方面探讨了该刊的发展战略问题。     

基于FBS-因果有向图模型的诊断设计建模方法研究

提出了一种基于有向图的FBS-因果模型,对FBS-因果模型的形式化描述、建模步骤进行了详细研究,对模型的有关假设、定义及其应用范围等进行了分析,总结性地给出了2种基本的故障诊断策略：序贯测试确定性故障修复法和最大后验概率候选故障源更换法。最后对抽象实例进行验证,结果表明基于有向图的FBS-因果模型的故障诊断测试是实用的,也是有效的。     

军校战士学员英语学习策略调查与分析

通过对军校战士学员英语学习策略使用的总体情况,探讨性别、所受教育程度、英语学习间断时间对英语学习策略选择的影响。结果表明,性别和所受教育程度对语言学习策略的使用没有显著影响,语言学习间断时间对语言学习策略的使用有显著影响。     

英语教学中自主学习能力的培养

自主学习是语言学习的关键,学生是否能够学好外语取决于自主学习能力的培养。本文阐述了自主学习的理论基础及使用价值,如何培养学生自主学习的能力,更多关注学习方法的相互作用。     

一类非完整系统的输出反馈控制问题研究

针对一类具有虚拟控制方向和非线性不确定项的非完整系统,研究了其输出反馈控制器的设计问题。采用状态转换技术和反推方法,设计了只依赖于输出值的输出反馈控制器。同时为了处理初值为零的情况,提出了基于第一个子系统输出值的切换控制策略,通过仿真算例说明了控制器的有效性。     

高功率密度柴油机智能化冷却系统控制策略

简要分析了未来坦克装甲车辆柴油机智能化控制冷却系统的必要性和可行性,提出了智能化冷却系统设计方案,阐述了其组成及工作原理,重点对智能化冷却系统控制策略进行了研究。针对某型柴油机,通过对其散热需求分析,提出了基于发动机工况的开环控制策略,同时,结合以发动机出口冷却水温度为控制目标提出了基于PID算法的闭环反馈控制策略。应用该策略可保证发动机在不同的环境和工况下冷却强度适宜,降低冷却系统的功耗。     

H/HCLZ—Ⅰ型中远海测量组合导航系统的研制

该型测量组合导航系统是在装船试用4年后取得较好效果的情况下,于1993年2月通过部级技术鉴定的。本文概要介绍了主要功能、技术途径、硬件设计特点、软件设计概况及数据处理技术,并综述了海试与试用情况等技术资料。     

Integrated guidance and control of guided projectile with multiple constraints based on fuzzy adaptive and dynamic surface

Based on fuzzy adaptive and dynamic surface (FADS), an integrated guidance and control (IGC) approach was proposed for large caliber naval gun guided projectile, which was robust to target maneuver, canard dynamic characteristics, and multiple constraints, such as impact angle, limited measurement of line of sight (LOS) angle rate and nonlinear saturation of canard deflection. Initially, a strict feedback cascade model of IGC in longitudinal plane was established, and extended state observer (ESO) was designed to estimate LOS angle rate and uncertain disturbances with unknown boundary inside and outside of system, including aerodynamic parameters perturbation, target maneuver and model errors. Secondly, aiming at zeroing LOS angle tracking error and LOS angle rate in finite time, a nonsingular terminal sliding mode (NTSM) was designed with adaptive exponential reaching law. Furthermore, combining with dynamic surface, which prevented the complex differential of virtual control laws, the fuzzy adaptive systems were designed to approximate observation errors of uncertain disturbances and to reduce chatter of control law. Finally, the adaptive Nussbaum gain function was introduced to compensate nonlinear saturation of canard deflection. The LOS angle tracking error and LOS angle rate were convergent in finite time and whole system states were uniform ultimately bounded, rigorously proven by Lyapunov stability theory. Hardware-in-the-loop simulation (HILS) and digital simulation experiments both showed FADS provided guided projectile with good guidance performance while striking targets with different maneuvering forms.     

Insurgency in Afghanistan: implications for Pakistan's internal and external security

In the aftermath of 9/11, the USA embarked on a massive global hunt for terrorists and launched its “Operation Enduring Freedom” in Afghanistan. Its failure to control insurgency in Afghanistan spilled over into Pakistan, with disastrous consequences. The resurgence of the Taliban with more formidable tactics and maneuvering skills has become more troublesome for both Afghanistan and Pakistan and for the USA and its allied forces. The fierce comeback of the insurgents has challenged the political and territorial integrity of Pakistan, one that it cannot tolerate. This article analyzes the current situation and its implications for Pakistan's security. Moreover, it looks into the internal and external security complexities that Pakistan faces and the possible implications of the US exit strategy for Pakistan's security. It concludes that the security situation in Pakistan is continuously deteriorating and no part of her territory is immune from terrorists' attacks. To be successful, Pakistan must pursue a broad-based strategy that encompasses military, political, social, economic and informational domains aimed at accomplishing four major objectives: (1) elimination of foreign terrorists and their facilitators; (2) strengthening of the political and administrative institutions in the Federally Administered Tribal Areas (FATA); (3) establishing a safe and secure environment conducive for sustained development and the realization of real socio-economic progress and (4) integrating the FATA into the national mainstream. In the long term, a strategy based on the concept of “Enlightened Moderation” is the right solution, not only to the internal problems of Pakistan but also for the Muslim world and the international community.