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上海纺织科技 2004年第1期32卷 3-4页

作者：翁蕾蕾江南大学纺织服装学院江苏无锡214063

在描述蜘蛛丝结构和性能的基础上 ,介绍了蜘蛛丝合成生产的几种方法 ,并分析了蜘蛛丝在纺织、医疗。

关键词：蜘蛛丝合成方法结构性能蜘蛛丝蛋白合成基因生物技术应用

Dynamic Equations Algorithm of the Sensorless BLDC Motor Drive Control With Back-EMF Filtering Based on dsPIC30F2010

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Estimating forest aboveground biomass using HJ-1 Satellite CCD and ICESat GLAS waveform data

第三十届中国控制会议

作者： CHEN Yongjun~1,HUANG Shenghua~2,WAN Shanming~2,WU Fang~2 1.college of Electronics and Information,yangtze university,jingzhou 43.023,china 2.college of Electrical and Electronic Engineering,Huazhong university of Science & Technology,Wuhan 430074,P.R.china

＜正＞This application note describes a sensorless Brushless Direct Current（BLDC） motor control algorithm that is implemented using dsPIC30F2010 Digital Signal Controller（DSC）.The algorithm works utilizing a majority function for digitally filtering the Back-Electromotive Force（BEMF）.Each phase of the motor is filtered to determine when to commutate the motor drive *** control technique excludes the need for discrete,low-pass filtering hardware and off-chip *** should be pointed out that all the discussions here,and the application software,assume a 3-phase motor has to be used.

关键词： BLDC Sensorless Back-Electromotive DSC

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Science china Earth Sciences 2010年第S1期53卷 16-25页

作者： GUO ZhiFeng1,CHI Hong1,2 & SUN GuoQing1,3 1State Key Laboratory of Remote Sensing Science,Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal university,Institute of Remote Sensing Applications,Chinese Academy of Sciences,Beijing 100101,china 2Graduate university of Chinese Academy of Sciences,Beijing 100049,china 3Department of Geography university of Maryland,college Park,MD 20742,USA 1. State Key Laboratory of Remote Sensing Science Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University Institute of Remote Sensing Applications Chinese Academy of Sciences Beijing 100101 China2. Graduate University of Chinese Academy of Sciences Beijing 100049 China3. Department of Geography University of Maryland College Park MD 20742 USA

The ecosystem in northeastern china and the Russian Far East is a hotspot of scientific research into the global carbon *** aboveground biomass(AGB) is an important component in the land surface carbon *** this study,using forest inventory data and forest distribution data,the AGB was estimated for forest in Daxinganlin in northeastern china by combining charge-coupled device(CCD) data from the Small Satellite for Disaster and Environment Monitoring and Forecast(HJ-1) and geoscience Laser Altimeter System(GLAS) waveform data from the Ice,Cloud and land Elevation Satellite(ICESat).The forest AGB prediction models were separately developed for different forest types in the research area at GLAS footprint level from GLAS waveform parameters and field survey plot biomass in the Changqing(CQ) Forest Center,which was calculated from forest inventory *** resulted statistical regression models have a R2=0.68 for conifer and R2=0.71 for broadleaf *** models were used to estimate biomass for all GLAS footprints of forest located in the study *** GLAS footprint biomass coupled with various spectral reflectivity parameters and vegetation indices derived from HJ-1 satellite CCD data were used in multiple regression analyses to establish biomass prediction models(R2=0.55 and R2=0.52 for needle and broadleaf respectively).Then the models were used to produce a forest AGB map for the whole study area using the HJ-1 *** data obtained from forest inventory data of the Zhuanglin(ZL) Forest Center were used as independent field measurements to validate the AGB estimated from HJ-1 CCD data(R2=0.71).About 80% of biomass samples had an error less than 20 t ha-1,and the mean error of all validation samples is 5.74 t *** pixel-level biomass map was then stratified into different biomass levels to illustrate the AGB spatial distribution pattern in this *** was found that HJ-1 wide-swath data and GLAS waveform data can be combined to estim

关键词： Disaster and Environment Monitoring and Forecast Satellite ICESat GLAS waveform boreal forest forest aboveground biomass multiple linear regression

Impulsive Control of Epidemic Spreading with Nonlinear Incidence Rates on Complex Networks

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Impulsive Control of Epidemic Spreading with Nonlinear Incid...

第24届中国控制与决策会议

作者： Tao Li 1 , Zhi-Hong Guan 2 , Yuanmei Wang 1 * 1. college of Electronics and Information, yangtze university, jingzhou 43.023, china2. the Department of Control Science and Engineering, Huazhong university of Science and Technology, Wuhan 430074, china

Considering hybrid impulsive and switching control and the case that many networks relevant to the epidemic spreading are homogeneous, including ’small-world’ networks, random networks and lattice models networks, an improved SIR epidemic model with impulsive control on homogeneous complex networks is presented. The dynamic behaviours of the model are considered, the conditions and threshold to the existence of the disease-free T-Periodic solution are established and the globally asymptotic stability is proved in the paper.

关键词： Epidemiological Model Homogeneous Networks Impulsive Differential Inequality Globally Asymptotically Stability

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人工神经网络D最优设计的一种方法

系统仿真学报 2003年第11期15卷 1586-1588,1650页

作者：陈进江南大学机械工程学院无锡214063

利用初始的少数实例求初步的权值矩阵,根据该矩阵的人工神经网络模型找出偏导数向量的模最大时对应的设计矩阵,又根据该设计矩阵的实例求出新的权值矩阵,寻找新一轮设计矩阵。通过用泰勒级数展开的神经网络输出公式,求该输出函数的方差... 详细信息

利用初始的少数实例求初步的权值矩阵,根据该矩阵的人工神经网络模型找出偏导数向量的模最大时对应的设计矩阵,又根据该设计矩阵的实例求出新的权值矩阵,寻找新一轮设计矩阵。通过用泰勒级数展开的神经网络输出公式,求该输出函数的方差,证明了偏导数的向量的模最大是相关矩阵行列式最小(D最优)的充分条件。

关键词：人工神经网络 D最优设计权值矩阵设计矩阵多步骤建模误差

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春秋战国时期楚国的社会流动及评价

苏州教育学院学报 2011年第5期28卷 62-64页

作者：李义芳长江大学文学院湖北荆州434023

春秋战国时期楚国的社会流动主要体现为楚王族集团的变动和士阶层的流动,其中既有旧贵族的衰落和新贵族的兴起,也有楚人才的外流和异族人的流入。相对而言,战国时期楚国社会的流动性比春秋时期要强,但没有形成合理的流动机制,封君制成... 详细信息

春秋战国时期楚国的社会流动主要体现为楚王族集团的变动和士阶层的流动,其中既有旧贵族的衰落和新贵族的兴起,也有楚人才的外流和异族人的流入。相对而言,战国时期楚国社会的流动性比春秋时期要强,但没有形成合理的流动机制,封君制成为社会流动的一大障碍。

关键词：春秋战国时期楚国社会流动评价

Impulsive Control of the Spread of Worms with Nonlinear Incidence Rates

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2010 Chinese Control and Decision Conference

作者： Tao Li~1,Zhi-Hong Guan~2,Yuanmei Wang~1,Yong Li~3 1.college of Electronics and Information,yangtze university,jingzhou 43.023,china 2.Department of Control Science and Engineering,Huazhong university of Science and Technology,Wuhan 430074, china 3.Joinhand Construction Machinery Co.Ltd,jingzhou 434024,china

＜正＞There has been a constant barrage of worms over the internet during the recent *** develop appropriate tools for thwarting quick spread of worms,researchers are trying to understand the behavior of the worm propagation with the aid of epidemiological *** this study,a SIR epidemic model with dynamic input-output property and nonlinear incidence rates is *** dynamics of this model under pulse control are *** established the conditions and threshold to the existence of the disease-free T-Periodic solution and proved that the disease-free T-Periodic solution is globally asymptotically stable.

关键词： Epidemiological model Impulsive differential inequality Globally asymptotically stability

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隐蔽油气藏勘探的信息集成系统

石油学报 2004年第6期25卷 33-37页

作者：吴东胜刘少华朱小龙陈华军王庆中国地质大学资源学院长江大学地科院湖北荆州43.023 长江大学地科院

总结了隐蔽油气藏的勘探方法、研究特点及信息集成需求状况 ,讨论了信息集成系统的设计思路 ,提出了以数据集市、数据平台和应用系统构成的三层式系统结构 ,由数据集市、空间分析、三维可视化、图形输出、油气藏预测评价和资源库等子系... 详细信息

总结了隐蔽油气藏的勘探方法、研究特点及信息集成需求状况 ,讨论了信息集成系统的设计思路 ,提出了以数据集市、数据平台和应用系统构成的三层式系统结构 ,由数据集市、空间分析、三维可视化、图形输出、油气藏预测评价和资源库等子系统实现系统功能 ,以组件式地理信息系统为基础平台对该系统进行二次开发。隐蔽油气藏勘探的信息集成将为多学科综合研究提供可共享的集成平台 ,提高隐蔽油气藏研究的速度、效率和准确性。

关键词：隐蔽油气藏信息集成系统层序地层学组件式地理信息系统集成平台

饲料中添加胆碱对黄鳝生长、组织脂肪含量及消化酶活性的影响

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水产学报 2006年第5期30卷 676-682页

作者：杨代勤陈芳阮国良长江大学动物科学学院长江大学动物科学学院湖北荆州434025 农业部淡水鱼类种质资源与生物技术重点开放实验室

研究了饲料中添用不同含量胆碱对黄鳝生长、饲料利用效率、肌肉和肝脏脂肪含量、肝体指数及消化器官4种消化酶活性的影响。结果表明,饲料中添加的胆碱含量不同,对黄鳝的影响不同,饲料中胆碱添加量在0~2.0%内,随着胆碱添加量的提高,黄鳝... 详细信息

研究了饲料中添用不同含量胆碱对黄鳝生长、饲料利用效率、肌肉和肝脏脂肪含量、肝体指数及消化器官4种消化酶活性的影响。结果表明,饲料中添加的胆碱含量不同,对黄鳝的影响不同,饲料中胆碱添加量在0~2.0%内,随着胆碱添加量的提高,黄鳝的生长速度会加快,饲料系数会逐步降低,肌肉、肝脏的脂肪含量及肝体指数降低,前肠、后肠和肝脏的蛋白酶、胰蛋白酶、淀粉酶和脂肪酶的活性均会相应的提高,而且饲料中的添加量达0.8%~1.0%时,这些变化显著,表明胆碱对黄鳝是不可缺少的,黄鳝饲料中胆碱的适宜添加量为0.8%~1.0%。

关键词：黄鳝胆碱生长脂肪含量消化酶

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泥质隔层的层次分析——以双河油田为例

石油学报 2004年第3期25卷 48-52页

作者：张昌民尹太举张尚锋李少华王大海刘军长江大学地球科学学院湖北荆州434023

应用层次分析法 ,将双河油田核桃园组第三段的地层边界到交错层的纹层边界的泥岩隔层分为 10个层次。利用测井曲线星形图将 5级以上层次的隔层区分开来 ,依靠测井曲线和岩心识别隔层厚度和层次 ,进而实现对隔层层次的描述。在隔层成因... 详细信息

应用层次分析法 ,将双河油田核桃园组第三段的地层边界到交错层的纹层边界的泥岩隔层分为 10个层次。利用测井曲线星形图将 5级以上层次的隔层区分开来 ,依靠测井曲线和岩心识别隔层厚度和层次 ,进而实现对隔层层次的描述。在隔层成因沉积学解释的基础上 ,运用密井网解剖提取隔层的宽度、厚度、宽厚比和对称性等形态参数 ,建立了隔层分布的知识库。

关键词：泥岩隔层层次分析法地质模型双河油田