一种新的保持分形特征的分形变形方法

针对IFS吸引子变形过程中间出现的分形特征退化的问题,提出基于局部吸引子的近似凸包及旋转匹配的特征对应方法.IFS吸引子的局部吸引子可由独立的IFS生成,IFS中每个压缩仿射映射存在不动点,构造所有不动点的凸包,即得到局部近似凸包;证明了局部近似凸包间的相似对应等价于局部吸引子间的相似对应,并提出了通过旋转匹配的特征对应方法实现局部近似凸包的配对,最后计算所有配对下相似度最高的一组局部近似凸包匹配,确定局部吸引子间的特征对应,即IFS特征对应.对两个IFS进行线性插值可实现保持分形特征的分形变形.     

舰空导弹武器系统战斗使用可靠性分析

为了研究舰空导弹武器系统不同的射击任务、射击种类对其可靠性的影响,提出舰空导弹武器系统作战使用可靠性基本模型,分别对单火力通道、多火力通道舰空导弹系统以不同射击种类、作战方式使用时的战斗使用可靠度进行了详细分析,可以选择不同的射击种类和火力分配方案提高系统战斗使用可靠性。     

看汉代京都赋与长安地域文化的交融——以《西都赋》和《西京赋》为例

汉代长安地理位置优越,得天独厚,在吸收多元文化的基础上形成自己独特的地域文化。汉武帝时期,政治统一,经济繁荣,勃兴的长安文化催生了汉代的京都赋,同样,京都赋又以其独特的文体内涵集中展现了汉代长安丰富多样的地域文化,二者在历史的长河中交融在一起。     

网络中心作战体系效能评估方法初探

网络中心作战体系是信息化战争要求下的一个具体作战体系,其效能评估是网络中心战研究领域的重要问题,是解决网络中心作战体系建设中方案论证、性能效能指标、经济因素等诸多问题的有效方法。首先提出了网络中心作战体系效能评估的基本概念;然后阐述了网络中心作战体系效能评估方法问题,分析介绍了几种较为成熟的评估方法的特点、适用性和不足;最后提出一种基于探索性建模与分析方法的网络中心作战体系效能评估框架,作为研究网络中心作战体系效能评估的参考评估框架。     

Just How Important Are ‘Hearts and Minds’ Anyway? Counterinsurgency Goes to the Polls

Despite all the talk of ‘hearts and minds’ being the key to counterinsurgency, local public opinion is rarely studied and when it is, it often yields surprising conclusions. Through analyzing polling data from Vietnam, Iraq and Afghanistan, this article shows that public opinion is less malleable, more of an effect rather than a cause of tactical success, and a poor predictor of strategic victory. As a result, modern counterinsurgency doctrine’s focus on winning popular support may need to be rethought.     

The artful use of national power: Portuguese Angola (1961–1974)

In its colony of Angola, Portugal during its colonial wars (1961–1974) was able to exploit the economic dependence and divided population loyalties of its hostile neighbours the Congo and Zambia as well as the cleavages within the nationalist movements to prevent a crippling insurgency. The rulers of both countries were largely dependent on Angola for trade, and were eager to have the side effects of the robust Angolan economy with its 11% annual growth brush off on their own moribund ones. While relationships were never comfortable, the sponsors of revolution were forced to reign in their ‘freedom fighters’ in order to maintain the functioning of their export-dependent economies. Portuguese leadership also played a vital role, as it was able to bring together diverse elements of national power in a concerted policy for dealing with these enemies, whether they were insurgents or their sanctuary countries. This policy of leveraging national power and playing on the vulnerabilities of its opponents worked well during its war in Angola and still holds valuable lessons for countries that find themselves in similar circumstances.     

Why did Sudan Lose a small war in Southern Sudan?

ABSTRACT

When on the wrong end of an asymmetry in the projection of hard power, weaker sides countenance the grim arithmetic of avoiding direct and massed confrontations. Invariably, insurgents have over the ages tended to employ indirect tactical methods to render their stronger opponents ineffective. Ultimately – interest asymmetry, regime type, asymmetries of strategy, and external intervention – combine in a complex interplay and pattern, to militate against a strong side. In Sudan, these factors interacted throughout the civil wars to produce regional autonomy and finally an independent South Sudan in 2011. Similar strategic logic had confronted many large African states battling insurgencies in Ethiopia, Angola, Nigeria, Zaire, and apartheid-era South Africa. Oftentimes, weakening public resolve has caused these governments to accommodate, capitulate or withdraw even if they try not to blink. Notwithstanding the regime type, it can be concluded that the majority of strong actors are prone to fail in a protracted, asymmetric conflict. Hence, the notion of linking victory in counterinsurgency to the degree of openness (democratic polyarchies); or closeness (totalitarianism) – is still valid but highly contestable in the case of Africa’s large dysfunctional states.     

基于数据场的登陆作战体系兵力编组效能分析?

兵力编组效能直接影响登陆作战体系的作战能力。在分析梯队式和群队式兵力编组模式下登陆作战体系网络模型的基础上,利用数据场理论研究登陆作战体系的拓扑势场,描述梯队或群队间由支援、协同产生的协同作战能力,建立基于数据场的登陆作战体系兵力编组效能模型,并进行仿真分析。得到了一种定量分析兵力编组作战效能的方法。     

Expanding the Dragon’s Reach:The Rise of China’s Anti-access Naval Doctrine and Forces

Among the multiple dimensions of the tous azimuths modernisation of Chinese naval forces, the development of China’s anti-access capacity has recently elicited considerable interest. The important link between this capacity and an overarching vision of the use of force – i.e. a naval doctrine – has, however, often been left implicit. This article shows that the particular development of China’s naval anti-access forces – more precisely, forces with an impact on the naval balance – can be explained by a shift of China’s naval doctrine towards a distinctly pre-emptive posture, which, itself, stems from the set of constraints imposed by the framework of ‘local war under informationised conditions’.     

Hardening the Hard,Softening the Soft: Assertiveness and China’s Regional Strategy

There is a growing view that the emerging brand of Chinese regional diplomacy in recent years is increasingly assertive. This article attempts to make better sense of this perceived more forceful Chinese diplomacy. It argues that Chinese regional behavior is more profitably understood through the lens of a two-pronged foreign policy strategy that combines two particular aspects. One is a tougher and more uncompromising approach toward issues that China regards as concerning its core interests. The other is a more flexible and cooperative position toward interests that, while significant, are of secondary importance.