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概率扩充和改进OIM损失的多目标跟踪算法

计算机工程与设计 2024年第7期45卷 2187-2194页

作者：付小珊胡乃平秦建伟王传旭青岛科技大学信息科学技术学院山东青岛266061

为解决多目标跟踪中联合目标检测和重识别训练时间过长、多分支特征不对齐和目标相互遮挡的身份转换问题,提出一种高效的多目标跟踪算法。在特征提取阶段利用深层聚合网络联合多层次特征,在重识别阶段通过三元组对在线实例匹配损失进行... 详细信息

为解决多目标跟踪中联合目标检测和重识别训练时间过长、多分支特征不对齐和目标相互遮挡的身份转换问题,提出一种高效的多目标跟踪算法。在特征提取阶段利用深层聚合网络联合多层次特征,在重识别阶段通过三元组对在线实例匹配损失进行增强,缓解特征不对齐问题。加入高斯核函数对训练样本进行概率扩充,缩短训练时间。利用运动、外观特征与卡尔曼滤波实现高效的在线关联,利用轨迹池暂存丢失的轨迹,提高目标相互遮挡时的跟踪性能。算法在MOT15和MOT17数据集上的准确度分别达到了60.1%与74.2%,MOT17上的FPS也达到21.6 Hz。

关键词：多目标跟踪目标检测重识别深层聚合高斯核在线实例匹配卡尔曼滤波

Analysis and design for architecture-based software

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Journal of Systems Engineering and Electronics 2005年第4期16卷 924-930页

作者： Jia Xiaolin He jian qin Zheng Wang Xianghua School of Electronics and Information Xi'an Jiaotong Univ. Xi'an 710049 P. R. China

The technologies of software architecture are introduced, and the software analysis-and-design process is divided into requirement analysis, software architecture design and system design. Using these technologies, a model of architecture-centric software analysis and design process（ACSADP） is proposed. Meanwhile, with regard to the completeness, consistency and correctness between the software requirements and design results, the theories of function and process control are applied to ACSADP. Finally, a model of integrated development environnment （IDE） for ACSADP is propcsed. It can be demonstrated by the practice that the model of ACSADP can aid developer to manage software process effectively and improve the quality of software analysis and design.

关键词： software process software architecture design space traceability.

Oblique and Herringbone Buckling Analysis of Steel Strip by Spline FEM

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Journal of Iron and Steel Research International 2011年第9期18卷 21-26页

作者： qin jian ZHANG qing-dong HUANG Ke-fu College of Engineering Peking University Beijing 100871 China Mechanical Engineering School University of Science and Technology Beijing Beijing 100083 China

The tilted waves in steel strip during rolling and leveling of sheet metal can be classified into two different types of buckling, oblique and herringbone buckling, respectively. Numerical considerations of oblique and herringbone buckling phenomena are dealt with by the spline finite element method （FEM）. It is pointed out that the shear stress due to residual strains caused by the rolling process or applied non-uniform loading is the main reason of oblique and herringbone buckle. According to the analysis of stress distribution in plane, the appropriate initial strain patterns are adopted and the corresponding buckling modes are calculated by the spline FEM. The developed numerical model provides an estimation of buckling critical load and wave configuration.

关键词： steel strip spline FEM initial strain oblique buckling herringbone buckling

Rectifying control of wire diameter during dieless drawing by a deformation measuring method of interframe displacement

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International Journal of Minerals,Metallurgy and Materials 2012年第7期19卷 615-621页

作者： Yong He Xue-feng Liu Fang qin jian-xin Xie Key Laboratory for Advanced Materials Processing (Ministry of Education) University of Science and Technology Beijing Beijing 100083 China

A deformation measurement method of interframe displacement was proposed in this paper. By online monitoring the shape di- mensions of both the deformation zone and its adjacent zone by machine vision, the initial and terminative positions of deformation were dynamically identified during dieless drawing, and the global monitoring and online closed-loop control of the deformation zone were achieved. The dieless drawing process was systematically carried out on NiTi shape memory alloy wires. It is shown that the deformation measurement method of interframe displacement can track the axial displacement of the wires, but this cannot be achieved by traditional machine vision. The initial and terminative positions of deformation can be accurately identified by this method. The proposed rectifying control technology can effectively decrease the wire diameter fluctuation during dieless drawing, that is, the standard deviation of the wire diameter fluctuation could be decreased fi＇om 0.30 to 0.08 mm after three passes of dieless drawing, indicating that the control system has a good rectifying ability.

关键词： wire drawing rectification deformation machine vision closed loop control systems nickel alloys sha^oe memory effect

Ligand-accelerated, branch-selective oxidative cyanation of alkenes

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Science Bulletin 2018年第22期63卷 1479-1484页

作者： Jun Yang Huan Li jian qin Fan Song jian Zhang Feng-Ling qing Lingling Chu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Chemistry Chemical Engineering and Biotechnology Center for Advanced Low-Dimension Materials Donghua University Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences

A ligand-accelerated, branch-selective oxidative cyanation of alkenes has been developed in the presence of catalytic Cu_*** styrenes and aliphatic alkenes with directing groups are well tolerated in this inexpensive *** mild condition allows for a good tolerance of functional groups, enabling facile access to a diverse array of simple and complex branched vinyl *** wide synthetic utility of this methodology has been further demonstrated via the efficient scaleup in both batch and continuous flow processes.

关键词： Vinyl nitrile Cyanation Branch-selective Alkene Copper catalysis

河北省部分地区腹泻犊牛源大肠埃希氏菌毒力基因检测与耐药性分析

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动物医学进展 2024年第10期45卷 40-47页

作者：张玥张学迪徐楷王传文秦建华河北农业大学动物医学院河北保定071000

为明确河北省部分地区大肠埃希氏菌携带的毒力因子情况及对药物的敏感度,更好地控制由致病性大肠埃希氏菌导致的犊牛腹泻,从河北省部分地区(廊坊、定州、石家庄、保定、衡水、邢台)的牛场采集了128份腹泻犊牛粪样,从中分离大肠埃希氏菌... 详细信息

为明确河北省部分地区大肠埃希氏菌携带的毒力因子情况及对药物的敏感度,更好地控制由致病性大肠埃希氏菌导致的犊牛腹泻,从河北省部分地区(廊坊、定州、石家庄、保定、衡水、邢台)的牛场采集了128份腹泻犊牛粪样,从中分离大肠埃希氏菌,利用PCR对分离的大肠埃希氏菌进行毒力因子和耐药基因的检测,并采用K-B纸片法对分离菌株进行12种抗菌药物的药物敏感性试验。结果显示,从128份腹泻犊牛粪便中分离到菌株125株,其中104株为大肠埃希氏菌。104株分离菌中61株携带毒力基因,毒力基因携带率为58.70%(61/104),毒力基因F17、Stx1、irp2、FyuA、STa、Stx2阳性率分别为17.31%、0.08%、24.04%、35.58%、10.58%、0.04%,未检测出K99、F41、LT和eaeA基因,部分大肠埃希氏菌携带多重毒力因子。16种耐药基因的检测显示aph(3'')-Ib、tetC、sul3、qnrA、qnrC、tetB、aac(6′)-Ⅰb、tetA、bla TEM、bla CTX-M、sul1、sul2、oqxA、oqxB、qnrS、qnrB阳性率分别为59.62%、26.0%、28.85%、0.05%、32.69%、29.81%、46.15%、48.08%、82.69%、78.85%、55.77%、74.04%、25.00%、30.77%、43.27%、0.07%。药物敏感性试验结果显示,104株分离菌耐2种以上抗菌药物的菌株达86.62%,对卡那霉素、恩诺沙星和环丙沙星敏感率较高,研究结果可为河北省部分地区大肠埃希氏菌性犊牛腹泻的防治提供理论依据。

关键词：犊牛腹泻大肠埃希氏菌毒力因子耐药性

Controlled Remote Preparing of an Arbitrary 2-Qudit State with Two-Particle Entanglements and Positive Operator-Valued Measure

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Communications in Theoretical Physics 2014年第3期61卷 315-321页

作者： LIAOYue-Ming ZHOU Ping qin Xing-Chen HE Yan-He qin jian-Sheng School of Science Guangxi University for Nationalities Nanning 530006 China Guangxi Key Laboratory of Hybrid Computational and IC Design Analysis Nanning 530006 China

We present a scheme for symmetric controlled remote preparation of an arbitrary 2-qudit state form a sender to either of the two receivers via positive operator-valued measurement and pure entangled two-particle states. The first sender transforms the quantum channel shared by all the agents via POVM according to her knowledge of prepared state. All the senders perform singIe- or two-particle projective measurements on their entangled particles and the receiver can probabilisticaly reconstruct the original state on her entangled particles via unitary transformation and auxiliary qubit. The scheme is optimal as the probability which the receiver prepares the original state equals to the entanglement of the quantum channel. Moreover, it is more convenience in application than others as it requires only two-particle entanglements for preparing an arbitrary two-qudit state.

关键词： controlled remote state preparation positive operator-valued measure two-particle entanglements

神经肌肉电刺激通过调控白细胞介素6/信号转导子及转录激活子3信号通路促进脊髓损伤后小鼠运动功能恢复

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解剖学报 2024年第3期55卷 260-267页

作者：覃建锋宋海旺孙宝飞吉杨丹龙思方杨丹黔南民族医学高等专科学校基础医学部贵州都匀558003 贵州医科大学基础医学院人体解剖学教研室贵州贵安新区561113

目的观察神经肌肉电刺激(NMES)对脊髓损伤后小鼠白细胞介素6(IL-6)/STAT3信号通路的影响,探讨其对运动功能恢复的机制。方法选取SPF级小鼠72只随机分成假手术(sham)组、脊髓损伤组(SCI)和NMES组。利用BMS评分、斜坡实验与电生理(EMG)评... 详细信息

目的观察神经肌肉电刺激(NMES)对脊髓损伤后小鼠白细胞介素6(IL-6)/STAT3信号通路的影响,探讨其对运动功能恢复的机制。方法选取SPF级小鼠72只随机分成假手术(sham)组、脊髓损伤组(SCI)和NMES组。利用BMS评分、斜坡实验与电生理(EMG)评估小鼠脊髓损伤后肢体运动恢复情况。Western blotting和Real-time PCR检测各组小鼠脊髓组织中相关炎症因子、IL-6/STAT3信号通路与胶质纤维酸性蛋白(GFAP)和脑源性神经营养因子(BDNF)的表达。HE染色观察各组小鼠脊髓形态结构。结果NMES组BMS评分和小鼠斜坡实验均高于SCI组(P<0.05);NMES组小鼠运动诱发电位(MEP)最大振幅高于SCI组(P<0.05);NMES组脊髓组织TNF-α、IL-12A与GFAP表达量均低于SCI组(P<0.05),TGF-β、IL-10与BDNF表达量均高于SCI组(P<0.05);与SCI组相比,NMES组小鼠脊髓空洞较少,脊髓形态修复较好;与SCI组相比,NMES组IL-6/STAT3信号通路蛋白表达均低于SCI组(P<0.05)。结论神经肌肉电刺激通过抑制IL-6/STAT3信号通路发挥抗炎作用,从而促进脊髓损伤后小鼠后肢运动功能的恢复。

关键词：脊髓损伤炎症反应白细胞介素6/信号转导子及转录激活子3信号通路神经肌肉电刺激免疫印迹法小鼠

基于历史制度主义分析范式的泰国高等教育管理制度变迁——中泰比较视野下广西民办高校教学督导制度系列论文之二

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高教论坛 2024年第9期 112-119页

作者：覃健杨素萍朱晓玉广西外国语学院广西南宁530299 南宁师范大学广西南宁530299

泰国高等教育管理制度自20世纪60年代起,经历了肇始与奠基、健全与发展、改革与探索三个阶段的变迁。伴随着泰国高等教育发展变迁,泰国高等教育管理制度也伴随此历史语境而出现、成熟和发展。基于历史制度主义视角观察,西方大学模式与... 详细信息

泰国高等教育管理制度自20世纪60年代起,经历了肇始与奠基、健全与发展、改革与探索三个阶段的变迁。伴随着泰国高等教育发展变迁,泰国高等教育管理制度也伴随此历史语境而出现、成熟和发展。基于历史制度主义视角观察,西方大学模式与泰国科层体制模式使得泰国高等教育管理制度的发展产生了强烈的路径依赖,全球化背景下知识型社会的挑战是其制度变迁的关键节点。同时,在泰国高等教育管理制度变迁的动力机制中,教育的公平性与卓越性是结构性变迁的基础动力,以“善治”促进高校自由独立是历时性变迁的内生动力,融入国际化是交互性变迁的直接动力。

关键词：泰国高等教育管理制度质量保障体系历史制度主义