努力提升政治主官能力素质

提高政治主官的能力素质,这是增强军队党组织“四个本领”的内在要求。政治主官应加强学习、坚定信念、科学运筹、开拓进取,努力提升把握部队建设方向、指导部队开展政治工作、谋划部队打赢高科技战争以及创新和发展部队政治工作的能力素质。     

加强软件密集型装备综合保障能力的思考

随着软件密集型装备的大量使用,软件密集型装备的地位越来越突出。本文阐述了加强软件密集型装备综合保障能力建设的重要性,对国内外软件密集型装备综合保障的研究情况进行了比较分析,并提出推进我军软件密集型装备综合保障能力建设应该把握的问题。     

Rigid elliptical cross-section ogive-nose projectiles penetration into concrete targets

The elliptical cross-section ogive-nose projectile (ECOP) has recently attracted attention because it is well suited to the flattened shape of earth-penetrating weapons. However, the penetration performance of ECOPs has not been completely understood. The objective of this study was to investigate the pene-tration performance of ECOPs into concrete targets using a theoretical method. A general geometric model of ECOPs was introduced, and closed-form penetration equations were derived according to the dynamic cavity-expansion theory. The model was validated by comparing the predicted penetration depths with test data, and the maximum deviation was 15.8％. The increment in the penetration depth of the ECOP was evaluated using the proposed model, and the effect of the major—minor axis ratio on the increment was examined. Additionally, the mechanism of the penetration-depth increment was inves-tigated with respect to the caliber radius head, axial stress, and resistance.     

解析与数值结合的方法及采用子结构法的改进

本文以常微分方程求解器为基础,采用康脱洛维奇法和线法,分别以矩形截面杆的扭转问题和含裂纹的Motz问题为例,对解析与数值结合的方法,进行了初步的研究.特别是在将子结构法引入后,数值结果得到明显的改进.     

对Sosemanuk算法改进的猜测决定攻击

Sosemanuk算法是欧洲eSTREAM计划最终获选的七个算法之一。从比特层面对该算法进行剖析,通过对Serpent1组件S盒、模232加法和线性反馈移位寄存器的研究,找到了关于内部状态的一个方程组,并利用Groebner基方法改进了对Sosemanuk算法基于字的猜测决定攻击。结果表明只需要猜测7个32比特的字就可以完全确定出其余5个32比特的内部状态,其攻击的复杂度为O(2192)。     

Inventory transshipment game with limited supply: Trap or treat

Inventory transshipment is generally shown to be beneficial to retailers by matching their excess demand with surplus inventory. We investigate an inventory transshipment game with two newsvendor-type retailers under limited total supply and check whether the retailers are better off than the case without transshipment. We derive the ordering strategies for the retailers and show that unlike the unlimited supply case, a pure Nash equilibrium only exists under certain conditions. Furthermore, contrary to the conventional wisdom, we show that inventory transshipment may not always benefit both retailers. Although one of the retailers is guaranteed to be better off, the other could be worse off. The decision criteria are then provided for the retailers to determine if they will benefit from the exercise of inventory transshipment. Numerical study indicates that the carefully chosen transshipment prices play an important role in keeping inventory transshipment beneficial to both retailers. Subsequently, a coordinating mechanism is designed for the retailers to negotiate transshipment prices that maximize the total profit of the two retailers while keeping each of them in a beneficial position.     

按照新要求培养政工干部的能力素质

在新世纪新阶段,完成全面构建社会主义和谐社会推进中国特色军事变革和建设信息化军队、打赢信息化战争的战略任务,在凸显我军政治工作地位作用的同时,也对政工干部能力素质提出了新的更高的要求.     

矩阵代数中可乘保范映照的显形式

在矩阵的可乘映照理论与应用中,判定一个可乘映照是否保持某类特定的数值特征以及获取可乘映照在保持某类数值特征条件下的解析式备受关注.对此,着重研究了一般可乘映照在具有某种保秩性或保范性下的表示问题.借助于构造的方法,给出了判定一个可乘映照是否为保秩映照的新的便捷方法.针对F=R或C,分别得到了Mn(F)上保1-范数、保∞-范数以及保F范数的可乘映照的显形式,进而证明了Mn(F)上保持1-范数可乘映照必为保F范数映照,而可乘保F范数映照又一定保谱半径、保数值半径、保正规性、保酉性等.     

Reluctant guerrillas in early nineteenth century China: the White Lotus insurgents and their suppressors

ABSTRACT

At the turn of the nineteenth century, China’s Qing dynasty (1644–1912) was hit by a sectarian rebellion. Commonly considered a breakpoint marking the end of the dynasty’s golden age spanning most of the eighteenth century, the war to suppress the rebels, referred to as the White Lotus War (1796–1804) in this article (‘White Lotus’ was the umbrella name used by both the authorities and some sectarians for their teaching), exposed many structural drawbacks of the Qing political and military systems and depleted the dynasty’s financial resources, which had never been recovered. Reluctant in embracing guerrilla warfare in the beginning, the insurgents quickly turned themselves into master guerrillas. Shuttling in two massive mountain ranges in central China, they managed to prolong their rebellion and fought some successful battles against their suppressors. Superior in manpower, weaponry, and logistical support, the government forces had to adapt to guerrilla warfare, albeit passively and ineptly. This article gives a brief introduction to this little-known episode of guerrilla war at the turn of the nineteenth century in Qing China, expounds the strengths and weaknesses of both sides, and sheds light on the roots of the war’s long duration and the grim consequences to the Qing state.