俄军备计划时间1/2,进度1/3

据2014年12月29日的《简氏防务周刊》报道,俄罗斯军事工业委员会副主席奥列格·博奇卡廖夫(Oleg Bochkarev)承认,俄罗斯为期10年的国家军备现代化计划时间已经过了半,但进度只完成1/3。博奇卡廖夫在2014年12月26日还说,经过修改更新的2016~2025年的军备改良计划可能会在2015年12月准备好,     

基于遗传算法的(n,n-1,m)卷积码盲识别

针对信息截获领域中(n,n-1,m)卷积码盲识别问题,提出基于遗传算法的盲识别方法。该方法在矩阵分析得到编码参数之后,利用遗传算法的全局搜索能力实现对基本校验多项式矩阵的精确识别,进而实现对基本生成多项式矩阵的识别。仿真表明:该方法能够在高误码条件下实现对(n,n-1,m)卷积码的盲识别,且运算量相对于以往的高容错识别方法得到降低。     

美研发货运火箭,1小时全球速递

近期,美军宣布,其货运火箭计划已进入预研论证阶段.此消息一出,立即引发舆论热议.美军计划中的货运火箭是个什么东西?所谓货运火箭,历史上有无类似研究,其结果如何?货运火箭研发的背后,折射出美军怎样的作战理念?联系历史与现实,货运火箭又将面临怎样的发展局面?本文就这些问题,一一为您解答.     

氦原子1S, 3S, 1P, 3P态的电子关联计算

本文从二次量子化公式出发,选取广义Laguerre多项式乘以γ~lcxp(-alγ)作为单电子径向函数完全集,这里a_l是依赖于轨道角动量l的变分参数,用组态相互作用方法计算了氨原子~1S,~3S,~1P,~3P态的能量和波函数。当组态限于主量子数n≤4,计算的能量相对精度约为99.9%;当组态限于%≤6,能量相对精度约为99.99%;而Hartree Fock方法的能量相对精度约为99%,利用原子波函数计算了一些原子参数,其结果与其他作者的结果符合很好。     

氦原子1S, 3S, 1P, 3P态的电子关联计算

李承祖 (应用物理系) 摘要本文从二次量子化公式出发,选取广义Laguerre 多项式乘以 r^lcxp(-a_l^r)作为单电子径向函数完全集,这里a_l是依赖于轨道角动量l的变分参数,用组态相互作用方法计算 了氦原子¹S, ³S, ¹P, ³P 态的能量和波函数。当组态限于主量子数 n≤4, 计算的能量相对精度约为99.9%; 当组态限于n≤6,能量相对精度约为99.99% ;而Hartree-Fock 方法的能量 相对精度约为 99%。 利用原子波函数计算了-些原子参数,其结果与其他作者的结果符合很 好。 是锺询 原子物理,量子力量,氦原子,电子关联,原子参数     

A family of games on 1,∞)2 with payoff a function of y/x

A two-parameter class of games on 1,∞)² is studied. The games may be regarded as analogs of Silverman games, having continuous payoff function in place of a step function of y/x. This change is motivated by a desire to move toward a model for competitive situations where the penalty for overspending increases with the amount of overspending. There are some similarities to games with bell-shaped kernel. For most of the region considered in the plane of the two parameters there are solutions of finite type, which are obtained explicitly. There are, however, pockets in this plane where no optimal strategies have been found and possibly where none of finite type exist.     

“健康1小时”,叫我怎能不爱你

【焦点提示】体能训练不仅锻炼身体,提高心肺抗压的能力,保证官兵完成体力消耗大、连续高强度作战训练任务,而且更能通过一些对抗性强的训练课目,培养官兵英勇顽强的战斗精神。体能训练在每天操课时间最后1小时进行,是大纲规定的内容。然而,当前不少单位却过多地强调军事训练任务重、机关工作节奏快、基层日常事情多等原因,让落实打了折扣。南京军区某旅通过在方法手段上创新,在组织施训中求实效,把最后1小时体能训练变成"健康快乐1小时",确保了训练落实,提升了训练质量。     

关于(1,f)-奇——复盖图

设ｆ是定义在图Ｇ的顶点集Ｖ（Ｇ）的顶点集Ｖ（Ｇ）上的一个奇数整函数。图Ｇ的一个（１,ｆ）－奇－因子是Ｇ的一个支搅揶图Ｆ使对任意的Ｘ∈Ｖ（Ｇ）有ｄｐ（ｘ）∈∪「１,３,ｆ（ｘ）」。图Ｇ是一个（１,ｆ）－奇－复盖图是对Ｇ的任一边ｅ,Ｇ都有一个（ｆ）－奇－因子含ｅ。本文给出Ｇ是（１,ｆ）－奇－复盖图的一个充要条件。     

Dangerous Demographics? The Effect of Urbanisation and Metropolisation on African Civil Wars, 1961–2010

Whether urbanisation promotes or inhibits the risk of civil war is disputed: while case studies usually support the former, quantitative investigations have found either the latter or no significant correlation at all. I argue that this contradiction is due to a conceptual and operational over-aggregation of urbanisation, ignoring its intrastate variation. I claim that a high relative concentration of the urban population and political, economic and social institutions in the largest city – so-called metropolisation – can increase both the motivation for and the feasibility of rebellion in a country. Triangulating case study evidence with a quantitative cross-national time series design, I show that metropolisation significantly and robustly increases the risk of governmental conflict in particular and hence civil war in general.     

A Castle in the Air? The Building,Arms, Action and Incident on the Eleventh-Century ‘Castle’ Capital from Westminster Hall

The restoration of Westminster Hall in the 1830s revealed a number of eleventh-century carved capitals, one depicting, as then described, ‘an armed man assailing a castle’. Aided by archaeological evidence from Abinger (Surrey), the ‘castle’ can be convincingly interpreted as a motte-top tower, carried by earth-fast posts, open-sided below and faced above with boards painted to resemble masonry. It is the only known depiction in elevation of a type of tower that is likely, given its simplicity, to have been widely used in the eleventh and twelfth centuries. The assailant, armed with an axe, carrying a round shield and wearing a helmet with nasal, is shown climbing the tower’s external stair at the moment of being despatched or wounded by the defender’s spear. The incident, an individual action rather than a ‘siege’ as such, has many oddities, and may represent a topical event or scene from history or mythology. The story of the Trojan War is suggested as a possible source.     

British Policy on Total Maritime Warfare and the Anti-Shipping Campaign in the Mediterranean, 1940–1944

During World War II, the British ran a sustained anti-shipping campaign against Axis merchant and supply traffic in the Mediterranean. Although the effects of this on the land war in North Africa have been the subject of much debate, little attention has been paid to the nature and prosecution of the campaign itself. This article analyses the changes in British attitudes and policy towards attacking merchant shipping prior to and throughout the campaign. It then goes on to examine the conduct of the campaign itself and compare it with other British efforts elsewhere during the war. It concludes that the anti-shipping campaign in the Mediterranean was a unique combined arms offensive for the British, and a major evolution in their attitudes and policy towards maritime total war.     

Military Spending and Income Inequality:Evidence on Cointegration and Causality for Turkey,1963–2007

This paper investigates a series of unit root, cointegration and causality tests to ascertain the direction of causality between the growth of GNP and defence expenditure in Turkey for the years 1955–2000. The main conclusion is that there is a long‐run equilibrium relationship between GNP and defence expenditures. Furthermore, the short run causality test indicates that there is a unidirectional causality between variables, from defence expenditure to economic growth. In order to see the effect of a shock, we employed impulse response analyses. The results show that GNP decreased during the period then output finally recovered from the initial shock to defence expenditures.     

New Light on the Swordmakers,Goldsmiths and Jewellers,John Ray and James Montague,Active in Partnership in London 1800–1821, With a New and Extended List of Their Known Work

Abstract

Some new information is presented on the prominent London goldsmiths and jewellers, John Ray and James Montague, of 22 Denmark Street, Soho, active in partnership from 1800 to 1821. A revised and extended list has been compiled of recorded works, including presentation swords, freedom boxes, ‘Toys’, tokens and other items, made by this highly reputable Soho workshop, during a decisive period of British history.     

自淮法中光现象分析及凸透镜n,R1,R2的计算

本文通过对自准法测量薄透镜焦距实验中伪像的分析,推出凸透镜的介质折射率ｎ及曲率半径Ｒ的测量方法。     

1, 4-二氯甲基-2, 5-二甲基苯与1, 4-二氯甲基-2-甲氧基-5-辛氧基苯的共聚研究

用1,4-二氯甲基-2,5-二甲基苯和1,4-二氯甲基-2-甲氧基-5-辛氧基苯共聚合成了一种可溶的聚对苯乙炔的衍生物,对共聚物结构进行了红外光谱、核磁共振氢谱表征