Small giants from Madagascan caves: autapomorphic giantism in the new cave-dwelling planthopper Tsingya clarkei gen. nov., sp. nov. (Hemiptera: Fulgoroidea: Meenoplidae)

A new giant cave-dwelling species of planthopper of the family Meenoplidae (Fulgoromorpha) is described from the Tsingy de Bemaraha National Park in western Madagascar, with information on its distribution and ecology. As the new species could not be placed in any of the previously described genera, a new genus is established. This is the first record of a cavernicolous meenoplid from the Afrotropical Region, and the second cave-dwelling Fulgoromorphan species from Madagascar. It is also the second example of island gigantism in the Fulgoromorpha from Madagascar.     

大学生体质测试系统应用于专业运动领域探讨——以四川省女子水球代表队的应用为例

应用大学生体质监测系统对四川女子水球队现役队员进行体质监测,并对不同位置球员的各项指标进行对比。结果发现:(1)中锋身高、体重及身体成分体重等指标均显著高于外线球员,台阶试验得分显著低于外线球员;(2)中锋反应时、体重等指标显著高于守门员,横向滑动次数显著低于守门员;(3)外线球员的身高显著低于守门员,反应时显著高于守门员。因此,大学生体质测试仪器可应用于专业运动领域,教练员可根据测试结果选择运动员、制定技战术。     

基于无衍射光及虚拟探测器的三角测量系统

提出一种新型激光三角测量系统。该系统用无衍射光作测量光束，用虚拟探测器扩展探测器尺寸。与传统激光三角测量相比，该系统在保持高测量精度及高分辨率的同时，扩展了测量范围。且系统机构简单，测量速度快。     

单位正则环中的零化子

环R称为单位正则环,如果对任何x∈R,有可逆元u∈R使得x=xux.文章利用零化子刻画了单位正则环,证明了正则环是单位正则环当仅当l(a)∩l(b)=l(d)时,有y∈R使得l(a)∩l(b)=t(a+by),当仅当l(a)=l(b)时,有u∈U(R)使得a=bua.     

英法中动结构对比及认知动因

中动结构是语言中一种比较普遍的现象,它具有主动的形式和被动的含义。文章通过分析英法两种语言的中动结构,论述了它们的相似之处,同时揭示了其后的认知动因。文章还指出,其差异主要由法语中动结构的中动语素se导致,其天然的被动含义使其能产性和使用范围大大高于英语中动结构的用法。     

浅谈篮球运动个人防守的控制范围

现代篮球运动竞争激烈,对抗性强性.提高运动员的防守能力,扩大其防守的控制范围,需要在防守的脚步动作、正确的选位、适时的干扰、伸缩及防守的基本姿势等方面,加强对运动员的训练与培养.     

Nonlinear RCMC method for spaceborne/airborne forward-looking bistatic SAR

In the spaceborne/airborne forward-looking bistatic synthetic aperture radar (SA-FBSAR),due to the system platforms’ remarkable velocity difference and the forward-looking mode,the range cell migration (RCM) not only depends on the target’s twodimensional location,but also varies with the range location nonlinearly.And the nonlinearity is not just the slight deviation from the linear part,but exhibits evident nonlinear departure in the RCM trajectory.If the RCM is not properly corrected,nonlinear image distortions would occur.Based on the RCM model,a modified two-step RCM compensation (RCMC) method for SA-FBSAR is proposed.In this method,firstly the azimuth-dependent RCM is compensated by the scaling Fourier transform and the phase multiplication.And then the range-dependent RCM is removed through interpolation.The effectiveness of the proposed RCMC method is verified by the simulation results of both point scatterers and area targets.     

关于算子的极大数值值域的一些结果

考察算子的数值值域与极大数值值域及其半径的性质所得，结果推广，丰富了文献中的工作。     

Genetic and morphometric variation of the Blackcap (Sylvia atricapilla) on the Azores Archipelago reveals a recent range expansion

ABSTRACT

The Blackcap, Sylvia atricapilla, is one of the few passerine species that breeds in all the Macaronesian archipelagos. The sedentary habits of these populations contrast with the migratory populations from the Western Europe. However, little is known for Azorean populations. We assessed the phylogeography of populations from the Azores based on sequences of two mitochondrial genes and one nuclear gene in the Z-chromosome. We also analysed differences in eight morphometric characters from a total of 282 Blackcaps from all the Azores islands. Our results suggest the occurrence of historical and/or current gene flow among birds from all the islands. Blackcaps from the Azores are close relatives of those from Madeira and Portugal, indicating a recent range expansion to the Azores in the last 0.1 million years. The analysis of morphometric data showed a high morphological diversity among and within the islands, probably related to ecological traits.     

高度场格点距平的长期统计预报试验

采用多通道奇异谱分析和相似预报方法，建立了长期统计预报模型．以７００ｈＰａ前期位势高度场显著时空主分量为预报因子，直接预报后期高度场格点距平的类别，由此获得了一定的预报技巧