基于深度学习的行人跟踪研究

在计算机视觉的领域中,深度学习的技术应用得越来越广泛,基于深度学习行人跟踪在计算机视觉领域中具有重要的研究价值。近年来,大量的研究在基于孪生神经网络在目标跟踪领域的研究成为重点。1相关介绍在科研领域中,计算机视觉是其研究的重点领域,随着科学的进步,计算机视觉追踪被应用非常广泛,如企业、军事和自动驾驶等对目标的准确追踪有越来越高的要求。近几年,目标跟踪算法是根据相关的滤波框架进行应用,</p

三信道全光纤梳状滤波器输出光谱分析

对于同样信道数的波分复用,采用三信道器件比用两信道器件更为简单。文章对一种能够实现三信道平坦输出的全光纤梳状滤波器的新结构进行了分析,推导了新结构的能量传输表达式,详细讨论了耦合器分光比的改变对滤波特性的影响。结果表明,当组成新结构的光纤干涉臂间的长度差和耦合器分光比取某些定值时,可形成一个复用间隔相等、通带平坦的三信道全光纤梳状滤波器,且波分复用的信道间隔仅仅取决于干涉臂长差的大小

一种低团聚石墨烯的制备方法

本发明提供了一种低团聚石墨烯的制备方法。该方法是将固氮菌加入氧化石墨烯溶液中，在温和的反应条件下固氮菌中的固氮酶或者固氮过程的中间产物能将氧化石墨烯还原从而得到石墨烯，并且还原后的石墨烯具有低团聚的优点，因此是一种低成本的制备方法，具有良好的应用前景

电化学脉冲制备石墨烯荧光量子点的方法

本发明公开了一种利用电化学脉冲制备石墨烯荧光量子点的方法，其包括：以石墨电极作为第一电极，并至少与第二电极、参比电极和电解液共同构建电化学体系；采用电化学脉冲法，通过向第一电极反复交替施加正电位和负电位，使电解液中的阴、阳离子反复交替进入石墨层与层之间，进而使石墨层与层之间剥离，获得石墨烯荧光量子点。利用本发明的方法，能实现高质量、高分散度、小尺寸石墨烯量子点的快速制备，且工艺简单，能耗低，效率高，易于实现工业化大规模生产，具有广泛的实用价值和工业前景

山葡萄砧木对‘黑比诺’葡萄耐旱寒的影响研究

以‘黑比诺’自嫁苗和山葡萄为砧木的嫁接苗为试材,在自然低温胁迫和干旱胁迫条件下,对接穗叶片相对含水量、相对电导率、丙二醛含量、可溶性蛋白和可溶性糖等指标进行了对比。结果表明,干旱胁迫下,与自接苗相比,嫁接苗的叶片相对电导率降低,相对含水量和丙二醛升高;在低温胁迫下,山葡萄嫁接苗的相对电导率降低,丙二醛、可溶性总糖和可溶性蛋白含量均升高。试验初步证明以山葡萄为砧木可提高‘黑比诺’的耐旱性和耐寒性

Study on optimum line configuration for location model in computer vision

The characteristics for propagation of quantization errors for the question of pose estimation from line correspondences are introduced in this paper because quantization errors are the primary factors that affect the accuracy of pose estimation. Mathematical model of the propagation of quantization errors from images of line features to results of pose estimation could be set up in the form of closed-form solution. The research has some theoretical value. Furthermore, it has some practical value. One of important applications is to find the optimum line configuration. In priority, the paper presents the method to find the optimum line configuration based on quadrangular frustum pyramid model and determine the optimum line configurations on the analysis of the quantization errors. This analysis can increase the accuracy of pose estimation in computer vision.</p

Fabrication of Polyvinyl Alcohol Arrays and the Direct Electrochemistry of Adsorbed Cytochrome c

利用自组装法以聚苯乙烯有序多孔膜为膜板制备聚乙烯醇微透镜阵列膜.在pH6.89的磷酸盐(PBS)缓冲溶液中,固载在聚乙烯醇微透镜阵列膜修饰的玻碳电极上的细胞色素c于0.072V(vs·Ag/AgCl)处显示一对准可逆的氧化还原峰,是细胞色素c血红素辅基Fe(Ⅲ)/Fe(Ⅱ)电对的特征峰.考察了扫速、溶液pH及支持电解质浓度等因素对细胞色素c电子传递的影响,体系的表观异相电子传递速率常数k0为2.98×10-6cm·s-1.Regular polyvinyl alcohol arrays were prepared with porous polystyrene films by a self-assembly method. Cyt c immobilized on PVA microlens arrays modified glassy carbon electrodes gave a pair of stable,well-defined and quasi-reversible cyclic voltammetric peaks at about 0.072 V (vs. Ag/AgCl) in 0.1 mol/L PBS buffer (pH = 6.89) solution. The effects of scan rate,pH and concentration of buffers on the electrochemical behaviors of Cyt c were studied in detail. The apparent heterogeneous electron transfer rate constant (k0) was evaluated to be 2.98×10-6 cm·s-1.作者联系地址：东北电力大学化学工程学院;吉林大学超分子结构与材料重点实验室;Author's Address: 1.College of Chemical Engineering,Northeast Dianli University,Jilin 132012,Jilin,China;2.Key Lab for Supramolecular Structure and Materials,Jilin University,Changchun 130023,Chin