Stable Geodesic Surface Signatures

Shape analysis plays a fundamental role in computer graphics.We present a novel global and intrinsic shape representation for shape analysis,called stable geodesic signature.It is based on the theory of stable closed geodesics and surface Ricci flow.We examine the surface by dynamically deforming it by metric design through Ricci flow,then we observe the behavior of the stable closed geodesics under the evolving Riemannian metrics.When a metric is deforming,some stable geodesic loops will become unstable and shrink to points,or some geodesic loops may merge.The number of stable geodesics forms the signature,which is general for arbitrary surfaces.Experiments on a large amount of surfaces demonstrate the efficiency and efficacy of the stable geodesic signature for shape analysis.     

“国培计划”班级的管理策略

＂国培计划＂短期集中培训的时间为15天,来自云南省不同州（市）的骨干教师学员临时组成一个班级.针对班级存在时间短、年龄差距大、学历和职称层次不同等特点,班级管理者应在学员报到前了解每位学员的基本资料,报到时关注学员的表达交际能力等,为后期的班委选择物色人选.另外可在班级里开展＂破冰＂活动,消除学员之间的陌生感,营造交流的气氛,提高班级管理质量,促进培训的顺利开展.     

单片机指令的实质与应用

本文从实用角度讨论了ＭＣＳ－５１系列单片机几条指令的实质，指出对汇编语言指令的理解与应用不能只停留在指令字面意义的简单表达上，而应该了解指令的详细执行过程，掌握其实质．     

省级师范生技能竞赛发展变化的调查研究——以浙江省为例

浙江省是华东地区首个举办省级师范生技能竞赛的省份,对其已经举办的10届比赛规程进行比较分析,主要从参赛人员、比赛分组与比赛项目3方面入手探究。根据其变化趋势对师范生技能竞赛的赛程与效应提出思考与建议:扩大参赛人员范围,对各个学段的师资培养都应给予足够关注;根据实际教学需要,改进比赛项目设置;普及信息技术应用,多媒体设计应全科化;持续发挥比赛效应,以赛促学、以赛促教。     

Cloning,expression and binding specificity analysis of odorant binding protein 3 of the lucerne plant bug, <Emphasis Type="Italic">Adelphocoris lineolatus</Emphasis> (Goeze)

Credible evidence shows that odorant binding proteins (OBPs) are required for insect olfaction perception and play a key role in transporting hydrophobic odorants across the sensillum lymph to the olfactory receptors (ORs). In the present study, a novel OBP (AlinOBP3) gene from the lucerne plant bug, Adelphocoris lineolatus, was cloned and expressed. The expression pattern of AlinOBP3 was evaluated by qPCR, which indicated that AlinOBP3 was dominantly expressed in antennae. The binding properties of AlinOBP3 with 9 cotton volatiles and 5 sex pheromone analogs were measured by fluorescence competitive binding assays with the fluorescence probe 1-NPN. The results revealed that of 9 cotton volatiles, Myrcene, β-Ocimene and α-Phellandrene can bind with AlinOBP3. α-Phellandrene especially bound to AlinOBP3 with a high binding affinity, with a dissociation constant of 56.68 μmol/L. Of the 5 sex pheromone analogs, Hexyl butyrate had the strongest binding affinity with AlinOBP3, with a dissociation constant as 59.53 μmol/L. Butyl butyrate, trans-2-Hexenyl butyrate and Ethyl butyrate had medium binding affinities with AlinOBP3, with dissociation constants of 227.39, 108.77 and 143.47 μmol/L, respectively. The results suggest that AlinOBP3 might be a pheromone binding protein (PBP) with a dual-function for the perception of sex pheromones and plant volatiles.     

聚乙烯醇缩对甲酰基苯偶氮变色酸类显色剂的提纯方法

报道了一种用纸色谱选择展开剂范围，薄层色谱确定展开剂，干层柱层析法提纯高分子显色剂的新方法．通过薄层色谱，元素分析及红外光谱测定证明，提纯的结果令人满意     

神经元调节器在双闭环直流调速系统中的应用

叙述人工神经元调节器的结构和原理，给出联接权训练算法的实现方法，设计人工神经元作调节器的双闭环直流调速系统的动态结构，并进行系统仿真研究。     

特性数据模拟的一个简便方法

用Ｅｘｃｅｌ电子表格软件对一元和二元函数的物性数据进行模拟。模拟用的方程来自原始公式、化工热力学、物理化学或经验模型，在多数情况下计算值和实验值之间的误差小于１％，从而为化工计算提供了新的实用手段。     

桑塔纳330K8BLOL柴油机轿车传动系统传动比的优化

对桑塔纳３３０Ｋ８ＢＬＯＬ型轿车以１．９ＬＴＤＩ柴油机为配套动力时，从动力性和经济性角度对传动系统的参数进行了优化，提出了合适的变速器传动比和主传动比．使用ＳａｎｔａｎａＬＸ五档变速器，且主传动比为３．８８９，可使轿车动力性有所提高，并且使油耗减少３０％左右．