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改进优势度决策法及其排序方法

计算机工程与设计 2018年第1期39卷 238-243页

作者：齐超袁永博张明媛大连理工大学建设工程学部辽宁大连116024 中国石油辽河油田分公司辽宁盘锦124010

为进一步分析现有决策方案中存在的问题,提出解决混合测度决策问题的优势度决策法。根据实际决策情况给出一组优势相关的定义,对优势度求取方法进行改进,对其互补性和一致性进行有效性验证。对改进方法的排序向量、优势向量以及比较向... 详细信息

为进一步分析现有决策方案中存在的问题,提出解决混合测度决策问题的优势度决策法。根据实际决策情况给出一组优势相关的定义,对优势度求取方法进行改进,对其互补性和一致性进行有效性验证。对改进方法的排序向量、优势向量以及比较向量的特征进行研究,与线性加权法和理想点法做对比分析,分析结果表明,该方法计算量小、精确性高、通用性好。实例分析结果表明了改进优势度算法的有效性。

关键词：优势度矩阵混合测度方案比较比较向量线性加权

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某扫雷车扫雷犁电液伺服系统辨识与控制

南京理工大学学报 2012年第2期36卷 238-244页

作者：高强金勇侯远龙季丽君南京理工大学机械工程学院江苏南京210094 总装备部工程兵军代局武汉军代室湖北武汉430073

针对某扫雷车扫雷犁电液伺服系统存在非线性及时变性的问题,研究了其辨识和控制方案。提出了离线训练与在线微调相结合的神经网络辨识方案,较好地解决了反向传播BP神经网络易陷入局部最小的问题,加速了网络的收敛速度,且离线训练后的权... 详细信息

针对某扫雷车扫雷犁电液伺服系统存在非线性及时变性的问题,研究了其辨识和控制方案。提出了离线训练与在线微调相结合的神经网络辨识方案,较好地解决了反向传播BP神经网络易陷入局部最小的问题,加速了网络的收敛速度,且离线训练后的权值参数为合理值,避免了在线微调时的振荡现象。研究了神经网络间接模型参考自适应控制方案,该方案利用神经网络在线辨识器为神经网络控制器实时提供梯度信息,使神经网络控制器的学习修正能够正常进行。仿真研究和样机试验结果证明了所提出辨识和控制方案的有效性和正确性。

关键词：扫雷车扫雷犁电液伺服系统神经网络在线辨识离线辨识自适应控制

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杂环偶氮染料薄膜的全息光存储

发光学报 2009年第1期30卷 113-118页

作者：尚永辉孙家娟李华古元梓咸阳师范学院化学系陕西咸阳712000 西北大学分析科学研究所陕西西安710069

采用含杂原子的偶氮染料TADEB、DMTAM、DMTAA和DMTAMB掺杂高分子聚合物PMMA制成薄膜,利用四波混频全息光路系统,研究了它们的全息光存储性质。实验结果显示DMTAA样品的衍射效率最高,可达到22%,是一种存储性能较为优良的永久性全息光存... 详细信息

采用含杂原子的偶氮染料TADEB、DMTAM、DMTAA和DMTAMB掺杂高分子聚合物PMMA制成薄膜,利用四波混频全息光路系统,研究了它们的全息光存储性质。实验结果显示DMTAA样品的衍射效率最高,可达到22%,是一种存储性能较为优良的永久性全息光存储介质材料。

关键词：全息光存储偶氮染料四波混频

Comparative Genome Analyses Reveal Distinct Modes of Host-specialization Between Dicot and Monocot Powdery Mildew

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Comparative Genome Analyses Reveal Distinct Modes of Host-sp...

基于交通运行效益评价的综合待行区预信号控制研究

中国植物病理学会2016年学术年会

作者： WU Ying MA Xian-feng PAN Zhi-yong KALE Shiv SONG Yi XIAO Shun-yuan Institute of Biosciences and Biotechnology Research & Department of Plant Science and Landscape Architecture University of Maryland College Park Key Laboratory of Horticultural Plant Biology of Ministry of Education Huazhong Agricultural University Virginia Bioinformatics Institute Virginia Tech

Monocot powdery mildew(PM) fungi such as Blumeria graminis ***(Bgh)infectious on barley and *** ***(Bgt) infectious on wheat exhibit extremely high-level of *** contrast,many dicot PM fungi display rather broad host *** understand why different PM fungi adopt distinct modes of host-adaption,we sequenced the genomes of four dicot PM strains(three Golovinomyces and one Oidium) and conducted comparative sequence analyses along with the genomes of Bgh,Bgt and Erysiphe necator(infectious on grapevine) available from the *** 3 129 genes are found in all seven genomes(thus they are conserved PM genes),-50%are lineage-specific,of which 116 534 are genes encoding candidate secreted effector proteins(CSEPs).Interestingly,while the two monocot PM fungi possess up to 534 CSEPs with several families containing up to 21 members,all the five dicot PM fungi have only 116 178 CSEPs with limited gene *** two evolutionary patterns concerning PM CSEPs coincide with the contrasting modes of their host-adaption:the monocot PM fungi show a high-level of host specialization,likely reflecting an advanced host-pathogen arms-race,whereas the dicot PM fungi tend to practice polyphagy,which has presumably lessened the selective pressure for escalating an arms-race with a particular ***,the tomato PM Oidium neolycopersici has a genome only half the size of other PM genomes,despite having a similar number of genes,suggesting that *** has followed a unique genome evolutionary path.

关键词：

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重庆交通大学学报（自然科学版） 2017年第11期36卷 78-84页

作者：成卫王勇袁满荣昆明理工大学交通工程学院云南昆明650500 昆明市公安交通警察支队云南昆明650500

以平面信号交叉口为研究对象,对不同饱和度条件下进口道设置综合待行区前后的通行能力、延误及停车次数等主要交通运行参数的变化做定量分析;结合综合待行区预信号设置规则,给出两种配合不同主信号相序的预信号设置方案及计算公式;运用V... 详细信息

以平面信号交叉口为研究对象,对不同饱和度条件下进口道设置综合待行区前后的通行能力、延误及停车次数等主要交通运行参数的变化做定量分析;结合综合待行区预信号设置规则,给出两种配合不同主信号相序的预信号设置方案及计算公式;运用VISSIM微观交通仿真软件以昆明市北京路-霖雨路的实际调查数据为例对评价结果进行验证,证明了理论分析结果的有效性。研究表明:对于过饱和条件下的城市主干道平面交叉口,设置综合待行区能够有效提高交叉口通行能力、降低车均延误,对交叉口交通运行效益的改善效果较为显著,而不合理的协调配时方案对综合待行区的改善效果有消极影响。

关键词：交通运输工程综合待行区预信号控制交通运行效益 VISSIM仿真

基于GIS的广西电网流域面雨量计算方法与监测预警

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气象研究与应用 2015年第1期36卷 38-42,52,I0003页

作者：钟利华钟仕全曾鹏袁丽军李勇广西气象服务中心南宁530022 广西气象减灾研究所南宁530022

以广西电网直调水电厂所处的西江流域为研究对象,基于GIS技术,在对西江流域面雨量监测区域基础信息处理基础上,采用比较分析方法,开展分流域面雨量计算方法研究,结果表明:(1)以1:5万数字高程模型为数据基础,针对西江流域河网、自动气象... 详细信息

以广西电网直调水电厂所处的西江流域为研究对象,基于GIS技术,在对西江流域面雨量监测区域基础信息处理基础上,采用比较分析方法,开展分流域面雨量计算方法研究,结果表明:(1)以1:5万数字高程模型为数据基础,针对西江流域河网、自动气象站、水电站等分布特点,结合水系、等高线特征,沿水系分水岭对西江流域干流进行精细化分区,为分流域面雨量计算提供基础参数;(2)对分流域面雨量采用算术平均法与泰森多边形法计算,结果为两种方法计算结果偏差较小,取算术平均法为流域分区面雨量计算方法;(3)逐小时处理、计算面雨量实时数据,实现西江流域面雨量的实时监测与预警服务。

关键词： GIS技术基础信息处理面雨量计算方法监测预警

Metformin accelerates bone fracture healing by promoting type H vessel formation through inhibition of YAP1/TAZ expression

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Bone Research 2023年第3期11卷 625-637页

作者： Zhe Ruan Hao Yin Teng-Fei Wan Zhi-Rou Lin Shu-Shan Zhao Hai-Tao Long Cheng Long Zhao-Hui Li Yu-Qi Liu Hao Luo Liang Cheng Can Chen Min Zeng Zhang-yuan Lin Rui-Bo Zhao Chun-yuan Chen Zhen-Xing Wang Zheng-Zhao Liu Jia Cao Yi-Yi Wang Ling Jin Yi-Wei Liu Guo-Qiang Zhu Jing-Tao Zou Jiang-Shan Gong Yi Luo Yin Hu yong Zhu Hui Xie Department of Orthopedics Xiangya HospitalCentral South UniversityChangshaHunan 410008China Movement System Injury and Repair Research Center Xiangya HospitalCentral South UniversityChangshaHunan 410008China Hunan Key Laboratory of Angmedicine ChangshaHunan 410008China Angmedicine Research Center of Central South University ChangshaHunan 410008China The First Affiliated Hospital Department of Metabolism and EndocrinologyHengyang Medical SchoolUniversity of South ChinaHengyangHunan 421001China National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangshaHunan 410008China

Due to increasing morbidity worldwide,fractures are becoming an emerging public health *** study aimed to investigate the effect of metformin on the healing of osteoporotic as well as normal *** H vessels have recently been identified as a bone-specific vascular subtype that supports ***,we show that metformin accelerated fracture healing in both osteoporotic and normal ***,metformin promoted angiogenesis in vitro under hypoxia as well as type H vessel formation throughout fracture ***,metformin increased the expression of HIF-1α,an important positive regulator of type H vessel formation,by inhibiting the expression of YAP1/TAZ in calluses and hypoxia-cultured human microvascular endothelial cells(HMECs).The results of HIF-1αor YAP1/TAZ interference in hypoxia-cultured HMECs using si RNA further suggested that the enhancement of HIF-1αand its target genes by metformin is primarily through YAP1/TAZ ***,overexpression of YAP1/TAZ partially counteracted the effect of metformin in promoting type H vessel-induced angiogenesis-osteogenesis coupling during fracture *** summary,our findings suggest that metformin has the potential to be a therapeutic agent for fractures by promoting type H vessel formation through YAP1/TAZ inhibition.

关键词： YAP1 healing fracture

菜阳河自然保护区岭罗麦、光序肉实树群落中树种的种间分离

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云南植物研究 2005年第2期27卷 149-155页

作者：柴勇李玉媛司马永康云南省林业科学院云南昆明650204

以5000 m2 的植物群落调查样地资料为基础, 采用N×N最近邻体列联表的截表法,用X2 适合性检验和分离指数指标, 对菜阳河自然保护区岭罗麦(Tarennoidea wallichii)、光序肉实树(Sarcosperma kachinense var simondii) 群落的种间分离进... 详细信息

以5000 m2 的植物群落调查样地资料为基础, 采用N×N最近邻体列联表的截表法,用X2 适合性检验和分离指数指标, 对菜阳河自然保护区岭罗麦(Tarennoidea wallichii)、光序肉实树(Sarcosperma kachinense var simondii) 群落的种间分离进行了探讨。结果表明, 在25个主要树种形成的300组种对中, 大多数种对的种间关系表现为随机毗邻(占75 33%), 部分表现为显著正分离(占19 67%), 少数表现为显著负分离(占5%), 这种以随机毗邻为主的种间分离格局与多数种群呈随机分布有关。群落中呈聚集分布的物种与其它物种易发生正分离, 一般不会表现为负分离; 而呈随机分布的物种与其它物种则多数表现为随机毗邻,少数表现为正分离或负分离。

关键词：菜阳河自然保护区岭罗麦、光序肉实树群落种间分离

Systematic study of the transfer of amino acids across the water/1,2-dichloroethane interface facilitated by dibenzo-18-crown-6

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Science China Chemistry 2004年第1期47卷 24-33页

作者： CHEN yong, yuan Yi, ZHANG Meiqin, LI Fei, SUN Peng, GAO Zhao & SHAO yuanhuaState Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun China College of Chemistry and Molecular Engineering Peking University Beijing China

Facilitated ion transfer reactions of 20 amino acids with dibenzo-18-crown-6 (DB18C6) at the water/1,2-dichloroethane (W/DCE) interfaces supported at the tips of micro- and nano-pipets were investigated systematically using cyclic voltammetry. It was found that there were only 10 amino acids, that is, Leu, Val, lie, Phe, Trp, Met, Ala, Gly, Cys, Gin (in brief), whose protonated forms as cations can give well-defined facilitated ion transfer voltammograms within the potential window, and the reaction pathway was proven to be consistent with the transfer by interfacial complexation/dissociation (TIC/TID) mechanisms. The association constants of DB 18C6 with different amino acids in the DCE (β0), and the kinetic parameters of reaction were evaluated based on the steady-state voltammetry of micro- or nano-pipets, respectively. The experimental results demonstrated that the selectivity of complexation of protonated amino acid by DB18C6 compared with that of alkali metal cations was low, which can be attributed to the vicinal effect arising from steric hindrance introduced by their side group and the steric bulk effect by lipophilic stabilization. Moreover, the association constants and the standard rate constants for different amino acids showed good correlations with their hydrophobicity (π), except Gly and Met, which inferred that the selectivity of such heterogeneous complex reaction for different amino acids with DB18C6, was not only affected by discrimination in binding these ions to the crown ether macro-cycle, but also significantly modified by the ion transfer Gibbs energy which was closely related to the structure of the transferred ions, protonated amino acids.

关键词： micro-/nano-pipet, water/1,2-dichloroethane interface, facilitated ion transfer, cyclic voltammetry, amino acid.