高校图书馆不同功能定位下对音乐元素运用的思考

在高校图书馆传统功能定位下，音乐元素的融入受到了极大的限制。音乐及阅读心理治疗等新功能的设置，则将音乐元素更广、更深地融入到高校图书馆的工作中，可更好地为高校广大师生的学习生活提供服务。从高校图书馆传统功能定位下音乐元素的融入和高校图书馆新功能定位下音乐元素的融入两个方面，提出了高校图书馆不同功能定位下对音乐元素运用的思考。     

多平台基于方位时延差的目标运动分析

以拖曳阵列与本舰所构成的声纳系统为例 ,从双平台观点考虑 ,利用对目标的两方位及时延的量测为依据 ,研究了该系统的目标运动分析 (targetmotionanalysis,TMA)问题。采用了最大似然估计、扩展Kalman滤波(EKF)方法 ,实现了对目标运动参数的估计 ,并给出了它们的Cramer Rao低界 (CRLB)。通过仿真考察了参数变化对估计精度的影响。仿真结果表明上述方法具有较高定位精度。该方法适合于主、被动形式的多平台系统 ,且容易实现。     

Relationship between the partitioning properties of motoneuron recruitment and the needle feeling propagation

Histological and physiological studies indicated that most skeletal muscles can be divided into a series of relatively independent sub-volumes: "neuromuscular compartments" and the partitioning property of the muscle result in the localization of muscle reflex. In the present experiment we studied the recruitment properties of medial gastracnemius (MG) muscle motoneuron pool of decerebrate cat with two kinds of local mechanical stimulation: local stretch and acupuncture-like stimuli. The results indicate that: (ⅰ) there is an obvious property of localization of recruitment activity, only the MNs which innervate the stimulated compartment were recruited by weaker and shorter stimuli; (ⅱ) recruitment activity spread to those MNs which supply the adjacent and distal compartments during the strength of stimulation or duration of the stimulation was increased; and (ⅲ) the recruitment property of muscle activity elicited by the local mechanical stimulation is thought similar to that of "needle feeling" along the meridian pathway during stimulation of acupuncture point.     

N-terminal of L protein of vesicular stomatitis virus contains a new signal sequence

The L protein (241kD) of vesicular stomatitis virus (VSV) is the most important snbnnit of the replication complex. The existence of specific localization signal in the L protein was investigated by making recombinant constructs expressing truncated mutants of the L protein fused to green fluorescent protein (GFP) in transient transfection assays. The chimeric genes encoding varied N-terminal of L and GFP gene were put under the control of T7 promoter or CMV promoter. The fusion proteins were transiently expressed in BHK-21, COS-7, CHO or Hep G2 cells. When more than 120 residues were deleted or only 96 residues were kept on the N-terminal, the fusion proteins were shown to be distributed throughout the cells, cytoplasm and nucleus under the confocal microscope. However, other chimeric proteins with 120 or more amino acids were dotted and distributed in the perinuclear regions. And the fusion protein with 96—120 aa has the similar distribution. A thirteen-residue peptide QGYSFLHEVDKEA (108—120) was identified as localization signal, whose function would be absolutely distributed with the deficiency of D or V. Our results show that there is an independent localizing signal in N-terminal domain of L protein of VSV and this functional signal is conserved in different cell lines.     

光子晶体的制备及其应用

介绍了光子晶体的基本概念、主要特征及其制备方法和应用前景。     

红螯螯虾感光器Gqα的亚细胞定位

利用免疫细胞化学的方法和电镜技术观察红螯螯虾感光器中Gq蛋白α亚基的亚细胞定位,结果表明Gqα以膜结合形式定位于感杆束和以可溶性形式定位于细胞质中,Gqα定位的变化依赖于不同的光照条件.在暗适应后,Gqα主要分布于感杆束,细胞质中很少,感杆束与细胞质中胶体金颗粒的密度比为1.44±0.074;在(日)光适应后,密度比减少为0.61±0.021;在不同波长的光照处理后,Gqα定位有差异,感杆束与细胞质中胶体金颗粒的密度比由高至低,依次为绿光(1.64±0.046)、红光(1.28±0.036)、蓝光(1.16±0.111)和黄光(0.96±0.099).光调节的Gqα转位可能控制了能被视紫红质激活的Gq蛋白的数量.研究表明光波可影响感光细胞中膜结合和可溶性Gqα的比例,而这一结果可能是由被光激活的视紫红质的数量来控制的.     

烟草花药发育过程中钙动态分布的初步观察

在烟草花药发育过程中,用焦锑酸钾沉淀的松弛结合钙显示出了一个与花药发育事态有关的动态:在孢原细胞时期的花药中几乎看不到钙颗粒.但到小孢子母细胞时期,花药中开始有钙颗粒沉淀,而且显示出向花药室中流动的迹象.当花粉母细胞进行减数分裂时,花药绒毡层细胞和花粉母细胞中出现了许多的细小钙颗粒.在小孢子发育时期,在绒毡层细胞解体之前,细胞中的钙被集中到小液泡中.在小孢子细胞质中仍有较多的钙颗粒,同时在花粉壁上也有钙颗粒沉积在外壁的基部.到小孢子分裂形成二胞花粉后,细胞质中的钙明显减少.当二胞花粉中的大液泡消失,细胞质中积累淀粉粒以后,花粉中可看到的钙颗粒很少.同时,在花药维管束周围的薄壁细胞中,又出现了较多的钙颗粒,表明花粉对钙离子的需求可能已降低.烟草花药发育过程中钙的动态分布特征暗示着钙参与了调控花粉发育过程,尤其是与小孢子转变过程中的重要事态有密切关系.     

基于最大似然估计的多目标定位

宽带高分辨雷达多目标定位问题一般是先进行精确时延估计，再进行源定位。本文提出了一种在频域运用最大似然估计进行目标位置反演的方法，归结为全局搜索--目标函数的极值。通过对仿真数据的处理，结果显示该方法可以准确的估计出多目标位置。     

城市定位与城镇群建设

城市是一个国家和民族对外开放的窗口、商品国际交换的平台，它决定着整个国家和地区的竞争力。文章对廊坊市城市发展的现状和廊坊市城镇群建设战略进行了论述，希望对我国其他城市的发展有一定的参考作用。     

A New Edge-directed Subpixel Edge Localization Method

IntroductionComparedtotraditionalindustry ,microelectronicfab ricationhasthreecharacteristics :highcomplexity ,highprecisionandhighautomatization .Tomeettheprecision ,speedandreliabilityrequirements,machinevisiontech niques,suchasvisionaidedinspectionandregistration ,havebeenintroducedineveryworkingprocedureofinte grated circuitfabricationandsurfacemounttechnology(SMT) .Inspectionandregistrationprecisionmustbecon stantlyincreasedasthesizeofthecomponentbecomessmallerandsmaller .Therefore ,the…