海豚基因组中硒蛋白基因的生物信息学预测

硒蛋白中的硒以硒代半胱氨酸(Sec)的形式存在.Sec由传统的终止密码子TGA编码.由于在可读框中难以区分TGA密码子在硒蛋白中的功能,硒蛋白基因的预测非常困难.利用本实验室建立的真核生物硒蛋白基因预测系统,从海豚基因组中识别了包括含2个Sec的2型碘甲腺氨酸脱碘酶(DI2)、具有可变剪切编码区的1型碘甲腺氨酸脱碘酶(DI1)及谷胱甘肽过氧化物酶(GPX)、硒蛋白P(SelP)等16个硒蛋白,从基因信息的角度探索了海豚中硒蛋白与其特殊生存环境及进化阶段的关系等问题.     

管理咨询行业的新并购浪潮

管理咨询行业的布局和版图正在悄然地发生变化。近日,在2013年VAULT的管理咨询公司排行上排名第四位的博斯公司,宣布已签订协议收购总部位于德国杜塞尔多夫的全球咨询公司明一企业管理咨询公司。     

高职英语写作教学探析

本文针对高职英语写作教学中的学习动机问题,依据英语写作"要我写"即"痛苦写作"为"我要写"即"快乐写作"的理念,探讨了如何培养高职学生写作兴趣,完成从"痛苦写作"到"快乐写作"的飞跃。     

通过具有周期性椭球形纳米孔结构金属膜的超强透射特性

利用三维有限时域差分（3D—FDTD）方法,研究了具有亚波长椭球形纳米孔周期性结构的金属膜的透射特性,探讨了品格常数和孔的形状对这种结构透射特性的影响,并且通过分析电场和电磁场能量分布图,揭示了这种透射源于两种不同的共振机制：限制在椭球形孔内区域的局域波导共振模式和电磁场能量分布在椭球形孔两端的表面等离子体共振模式．     

关于高等职业技术教育机电一体化专业开设专业日语课的构想

本文通过对目前职业技术人才需求的分析,根据高职教育的要求以及目前人才市场的需求,建议在高职教育机电一体化专业引入多学时专业日语课程。     

具多变滞量的二阶中立型差分方程振动性判据

研究了具有多个变滞量的变系数的二阶中立型差分方程解的振动性,并得出了其解振动的充分条件及其差分子Δ振动的判别依据.     

Σ2上关于Morse猜想的研究

对于一个动力系统,当它是度量传递的时,它一定是拓扑可迁的,但是,反命题却不一定成立.1946年和1973年,Morse先后两次提到拓扑可迁性能否推出度量传递性的问题.他猜想说对于解析或具有某种光滑性的系统,拓扑可迁性蕴含度量传递性.本文讨论在亏格数为2的紧致的可定向二维流形上,对于解析系统来说,猜想是成立的.     

Kelisky-Rivin定理的初等证明

给出了Kelisky-Rivin定理的一个纯初等的证明。     

Novel Plastic Encapsulation Holding Method for Automobile Glass Using Injection Molding Process

Glass positioning and holding is difficult in the process of injection molding encapsulation of automobile glass. A suction cup or soft resin is always introduced in this process. However, these materials cannot hold glass tightly, thus resulting in the unsteady quality of toughened glass and encapsulated plastic. To solve this problem, a novel holding method called magnetic high-pressure holding with twin bags is proposed to address the features of toughened glass and the encapsulation injection process. Firstly, a pair of permanent magnets is introduced as energy source, followed by the magnetization of a couple of magnetic particle bags. Contact between the single bag and the glass surface will enable the couple of magnetic particle bags to hold glass tightly and to self-adapt the freeform of the glass. Secondly, an experimental system with mechanical and control systems is designed. This system is controlled by the opening and closing force of the mold, which turns the magnetic field on or off to hold or loosen the glass. The magnetic field distributions are measured at important positions of the permanent magnets and in the magnetized particles in the experiments to determine the holding performance. Finally, the process of determining the parameters of the magnet and its attenuation is analyzed, including the minimum friction force between the glass and the particle bag during injection molding, the magnetic energy product and the magnetized filed distributions, and the re-checklng method for these parameters. The theoretical analysis and the experimental result show that this flexible holding system may produce sufficient holding force, which not only protects glass but serf-adapts the glass freeform as well. The production practice meets the technical requirements of injection molding with a defect-free surface, with no scratches and cracks on the glass and no slight glass movements in the mold cavity.     

面向辅助驾驶的夜间行人检测方法

辅助驾驶系统需要实时而准确的行人检测方法.文中利用基于知识的方法复杂度小的优点,针对单目远红外视频数据,提出一种基于概率模板匹配的夜间行人检测方法.该方法基于行人样本的灰度分布特征,采用局部双阈值分割算法提取候选目标,进而根据行人的运动方向建立多尺度概率模板,对候选目标进行判别.该概率模板建立方式缓解了行人样本类内方差较大的问题,增强了概率模板归纳行人外观模式的能力.为改善行人检测的准确度,进一步将目标跟踪算法融入概率模板匹配,借助多帧的综合处理结果实现了更为鲁棒的目标归属判断.实验结果表明:该方法计算开销较低,实时性较好;在郊外场景中检测率不低于90%,虚警率不高于10%;而在市区场景中检测率约为75%,虚警率约为22%.