The intelligent fault diagnosis of construction machinery based on multi-agent
作者：
Wang Yi* ;Jiang Ping;Luo Ya-hui;Xie Yan-qun
期刊：
Applied Mechanics and Materials ,2011年48-49:1383-1388 ISSN：1660-9336
通讯作者：
Wang Yi
作者机构：
[Wang Yi] Hunan Agr Univ, Coll Informat Sci & Technol, Changsha 410128, Hunan, Peoples R China.;[Jiang Ping; Xie Yan-qun; Luo Ya-hui] Hunan Agr Univ, Coll Engn, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Wang Yi] H;Hunan Agr Univ, Coll Informat Sci & Technol, Changsha 410128, Hunan, Peoples R China.
会议名称：
3rd International Conference on Measuring Technology and Mechatronics Automation (ICMTMA 2011)
会议时间：
JAN 06-07, 2011
会议地点：
Shanghai, PEOPLES R CHINA
会议主办单位：
[Wang Yi] Hunan Agr Univ, Coll Informat Sci & Technol, Changsha 410128, Hunan, Peoples R China.^[Jiang Ping;Luo Ya-hui;Xie Yan-qun] Hunan Agr Univ, Coll Engn, Changsha 410128, Peoples R China.
会议论文集名称：
Applied Mechanics and Materials
关键词：
construction machine;multi-Agent technology;fuzzy;fault diagnosis
摘要：
The number of construction machinery faults is too much and its diagnosis are fuzzy and complex. We construct the fault hierarchy model by the means of hierarchy analysis and obtain all kinds of Possibility degree of faults factors through the triangular fuzzy complementary judgment matrix. Take the fault diagnosis of diesel engine fuel system, this paper establish intelligent fault diagnosis system, which has the ability of self-learning and self-correction using multi-agent technology.
语种：
英文
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ORMF: An ontology-based requirements management framework for networked software
作者：
Hu, Jianqiang* ;Wu, Gang;Zhong, Qian
期刊：
Communications in Computer and Information Science ,2011年238 CCIS:377-384 ISSN：1865-0929
通讯作者：
Hu, Jianqiang
作者机构：
[Hu, Jianqiang] Hunan Agr Univ, Sch Informat Sci & Technol, Changsha 410128, Hunan, Peoples R China.;[Hu, Jianqiang; Zhong, Qian; Wu, Gang] Tsinghua Univ, Dept Comp Sci & Technol, Beijing 100084, Peoples R China.;[Hu, Jianqiang] Wuhan Univ, State Key Lab Software Engn, Wuhan 430072, Peoples R China.
通讯机构：
[Hu, Jianqiang] H;Hunan Agr Univ, Sch Informat Sci & Technol, Changsha 410128, Hunan, Peoples R China.
会议名称：
International Conference on Web Information Systems and Mining (WISM 2011)
会议时间：
SEP 23-25, 2011
会议地点：
Taiyuan, PEOPLES R CHINA
会议主办单位：
[Hu, Jianqiang] Hunan Agr Univ, Sch Informat Sci & Technol, Changsha 410128, Hunan, Peoples R China.^[Hu, Jianqiang;Wu, Gang;Zhong, Qian] Tsinghua Univ, Dept Comp Sci & Technol, Beijing 100084, Peoples R China.^[Hu, Jianqiang] Wuhan Univ, State Key Lab Software Engn, Wuhan 430072, Peoples R China.
会议论文集名称：
Communications in Computer and Information Science
关键词：
Meta-modeling frame RGPS;Networked software;Ontology-based requirements management framework;RGPS Browser
摘要：
Networked software, a special kind of applications in service-oriented computing and ultra-large-scale systems, is a complex software system deploying on network environment. Currently, traditional requirements management systems are far from meeting demands of networked software, due to low degree of automation, coarse-grained management and limited support for requirements modeling activities. Facing the challenges, based on meta-modeling frame called RGPS (Role-Goal-Process-Service) international standard, an ontology-based requirements management framework called ORMF is presented in this paper. In addition, an open requirements management architecture is designed to fulfill ORMF framework. Finally, a requirement registration and query tool called RGPS Browser is implemented to provide supporting services for open requirements process of networked software. Combined with an on-demand Q/A case in transport domain, it displays fine-grained retrieval in visualization.
语种：
英文
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A stochastic scheduling algorithm for precedence constrained tasks on Grid
作者：
Tang, Xiaoyong* ;Li, Kenli;Liao, Guiping;Fang, Kui;Wu, Fan
期刊：
Future Generation Computer Systems ,2011年27(8):1083-1091 ISSN：0167-739X
通讯作者：
Tang, Xiaoyong
作者机构：
[Fang, Kui; Liao, Guiping; Tang, Xiaoyong] Hunan Agr Univ, Informat Sci & Technol Coll, Changsha, Hunan, Peoples R China.;[Wu, Fan; Tang, Xiaoyong; Li, Kenli] Hunan Univ, Sch Informat Sci & Engn, Changsha 410082, Hunan, Peoples R China.;[Liao, Guiping] Hunan Agr Univ, Sch Informat Sci & Technol, Changsha, Hunan, Peoples R China.
通讯机构：
[Tang, Xiaoyong] H;Hunan Agr Univ, Informat Sci & Technol Coll, Changsha, Hunan, Peoples R China.
关键词：
Grid;Makespan;Precedence constrained tasks;Stochastic scheduling
摘要：
This paper addresses the problems in scheduling a precedence constrained tasks of parallel application with random tasks processing time and edges communication time on Grid computing systems so as to minimize the makespan in stochastic environment. This is a difficult problem and few efforts have been reported on its solution in the literature. The problem is first formulated in a form of stochastic scheduling model on Grid systems. Then, a stochastic heterogeneous earliest finish time (SHEFT) scheduling algorithm is developed that incorporates the expected value and variance of stochastic processing time into scheduling. Our rigorous performance evaluation study, based on randomly generated stochastic parallel application DAG graphs, shows that our proposed SHEFT scheduling algorithm performs much better than the existing scheduling algorithms in terms of makespan, speedup, and makespan standard deviation. © 2011 Elsevier B.V. All rights reserved.
语种：
英文
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Computer simulation study of nonlinear imaging properties for two phase-typed scatterers
作者：
Xu, Jianbo* ;Hu, Yonghua;Zhuo, Hui
期刊：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION ,2011年28(12):2459-2464 ISSN：1084-7529
通讯作者：
Xu, Jianbo
作者机构：
[Xu, Jianbo; Hu, Yonghua] Hunan Univ Sci & Technol, Sch Comp Sci & Engn, Xiangtan 411201, Peoples R China.;[Zhuo, Hui] Hunan Agr Univ, Informat Sci & Technol Coll, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Xu, Jianbo] H;Hunan Univ Sci & Technol, Sch Comp Sci & Engn, Xiangtan 411201, Peoples R China.
关键词：
High power lasers;Kerr media;Laser beams;Laser communications;Phase shift;Spatial filtering
摘要：
Nonlinear imaging of two phase-typed scatterers in super-Gaussian laser beams is modeled and its properties obtained by computer simulation are presented. The formations of hot images and second-order hot images are verified. It is found that the in-beam locations of hot images correspond to those of the scatterers, but that there can be only one second-order hot image, which is at the middle point between the in-beam locations of the scatterers. Interestingly, the image intensity can be suppressed and it increases in an oscillating manner with some regularity as the distance between the scatterers increases. Moreover, one more scatterer makes the effect of the B integral and that of the phase shift caused by scatterers quite different from the predictions for singlescatterer case. The variation trend of hot image intensity with the B integral is not in agreement with that described by the analytical result for the single-scatterer case. The variation of phase shift caused by the scatterers can result in two peaks in the variation of hot image intensity with it, and the phase shift corresponding to the larger peak is approximately half the predicted result for the single-scatterer case. These results indicate that the number of scatterers has a significant influence on nonlinear imaging. ©2011 Optical Society of America.
语种：
英文
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基于灰度截留分割与十色模型的马铃薯表面缺陷检测方法
作者：
李锦卫;廖桂平;金晶;虞晓娟
期刊：
农业工程学报 ,2010年26(10):236-242 ISSN：1002-6819
通讯作者：
Liao, G.(lgpxf@yahoo.com.cn)
作者机构：
[金晶; 虞晓娟; 廖桂平; 李锦卫] Institute of Agricultural Information, Hunan Agricultural University, Changsha 410128, China
通讯机构：
Institute of Agricultural Information, Hunan Agricultural University, China
关键词：
计算机视觉;模式识别;马铃薯;缺陷检测
摘要：
为探索基于计算机视觉的马铃薯表面缺陷检测新方法,该研究提出能将马铃薯表面疑似缺陷一次性分离出来的快速灰度截留分割方法和用于缺陷识别的十色模型。选择面积比率和十色比率作为缺陷判别特征,对分割出来的深色部位采用阈值法进行缺陷识别。采用基于快速G与亮度截留分割的2种方法对发芽进行识别。通过对326个马铃薯样本的652幅正反面图像进行试验,基于十色模型的缺陷识别方法对分割出来的深色区域的正确识别率为93.6%,基于快速G与亮度截留分割2种方法结合对有芽体图像的正确识别率为97.5%,马铃薯表面缺陷正确检测率为95.7%。结果表明,该套方法能快速、有效、方便地检测出黄色薯皮马铃薯的表面缺陷。
语种：
中文
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The research of distributed object state mangement mechanism based on CORBA
作者：
Zhu, Xinghui;Fang, Kui
期刊：
Parallel and Distributed Computing, Applications and Technologies, PDCAT Proceedings ,2010年:454-457
通讯作者：
Zhu, X.(zhuxh@hunau.net)
作者机构：
[Fang, Kui; Zhu, Xinghui] Information Science and Technology College, Hunan Agricultural University, Changsha, China
通讯机构：
Information Science and Technology College, Hunan Agricultural University, China
会议名称：
11th International Conference on Parallel and Distributed Computing, Applications and Technologies, PDCAT 2010
会议时间：
December 8, 2010 - December 11, 2010
会议地点：
Wuhan, China
会议主办单位：
(1) Information Science and Technology College, Hunan Agricultural University, Changsha, China
关键词：
CORBA;Distributed system;Interceptor;Object state
摘要：
The technology of distributed objects improves the systems' reliability and extensibility, and yet brings the complexity of management and maintenance on objects. In this paper, a management mechanism of service object state in distributed system based on CORBA is designed, and the concept, the theory and the implementation is discussed in detail. ©2010 IEEE.
语种：
英文
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一种基于多维服务质量的局部最优服务选择模型
作者：
胡建强;李涓子;廖桂平
期刊：
计算机学报 ,2010年33(3):526-534 ISSN：0254-4164
通讯作者：
Hu, J.-Q.(jqhucn@hotmail.com)
作者机构：
[廖桂平; 胡建强] School of Information Science and Technology, Hunan Agricultural University, Changsha 410128, China;[胡建强] State Key Laboratory of Software Engineering, Wuhan University, Wuhan 430072, China;[胡建强; 李涓子] Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China
通讯机构：
School of Information Science and Technology, Hunan Agricultural University, China
关键词：
局部最优服务选择模型;序数效用函数;主客观赋权模式
摘要：
全局最优和局部最优是服务选择的两种策略.现有的全局最优服务选择算法提供端对端约束下最优单解而非可接受的多解,既无法充分体现用户偏好和服务个性,也不利于激励服务提供者优化服务质量.首先,在引入序数效用函数作为局部服务排序的数值尺度的基础上,提出一种基于多维服务质量的局部最优服务选择模型MLOMSS(Multi-QoS based Local Optimal Model of Service Selection),为自动选取优质服务提供重要依据.然后,构造客观赋权模式、主观赋权模式和主客观赋权模式来确定各服务质量属性的权重,既体现用户偏好和服务质量的客观性,又有助于快速生成聚合服务链.最后,通过语义Web服务集成平台SEWSIP(Semantic Enable Web Service Integration Platform)证明MLOMSS模型的有效性和灵活性.
语种：
中文
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Research on the Impacts of Tightly Coupled Supply Chain Business Process and Its Improvement
作者：
Peng, Jian
期刊：
Proceedings of the International Conference on E-Business and E-Government, ICEE 2010 ,2010年:4472-4474
通讯作者：
Peng, J.(forthing@163.com)
作者机构：
[Peng, Jian] Department of E-commerce, College of Information Science and Technology, Hunan Agricultural University, Changsha, China
会议名称：
The International Conference on E-Business and E-Government, ICEE 2010, 7-9 May 2010, Guangzhou, China, Proceedings
摘要：
The importance of suited business process and information flow to supply chain was set forth,then,this paper analyzed the impacts of tightly coupled business process on the whole performance of supply chain through a simple example about a supplier and a vendor,two as-is models of original business processes were improved,a new and integrated to-be model was provided,and the effect of improvement was also descripted.Next,business process reengineering on the basis of improvement of information controlling flow was discussed. ©2010 IEEE.
语种：
中文
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Plumpness recognition and quantification of rapeseeds using computer vision
作者：
Jinwei Li;Guiping Liao;Xiaojuan Yu;Zhao Tong
期刊：
Journal of Software ,2010年5(9):1038-1047 ISSN：1796-217X
通讯作者：
Liao, G.(lgpxf@yahoo.com.cn)
作者机构：
[Xiaojuan Yu; Zhao Tong; Guiping Liao; Jinwei Li] Institute of Agricultural Information, Hunan Agricultural University, Changsha, China
摘要：
The plumpness is an important index of crop seed. However, traditional measurements are time-consuming and labor intensive. The computer vision technology, which may offer more efficient and non-destructive methods for measurement, has recently appeared. But it is very difficult to accurately estimate the plumpness of single seed by the ratio between area and perimeter because of the diversity of rapeseed seed's size. This paper focused on rapeseed seed plumpness recognition and quantification, based on computer vision. A new method, the coefficient of variation of radius (CVR), was used to estimate seed plumpness. The recognition and quantification model for plumpness in single seed were established by using the fuzzy C-means (FCM) clustering and fuzzy math method. The plumpness of the seed is full if plumpness is greater than or equal to 0.6. Some correlative index are calculated and analyzed to verify the validity of this method. The tests show that there is no correlation between plumpness or plumpness ratio, and 1000-seed weight or equivalence diameter. But there are significantly partial correlation between plumpness or plumpness ratio, 1000-seed weight and equivalence diameter. Finally, plumpness ratio index is significantly different among the 12 varieties rapeseed was determined. With the mean value of plumpness ratio of rapeseed variety, the plumpness degree was plotted 10 grades. The results show that the application of computer vision technology is significantly valid for quantitative determination of plumpness in rapeseed seed. ©2010 Academy Publisher.
语种：
英文
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Research on heuristic knowledge reduction algorithm for incomplete decision table
作者：
Dai, Xiaopeng;Xiong, Dahong
期刊：
International Conference on Internet Technology and Applications, ITAP 2010 - Proceedings ,2010年
通讯作者：
Dai, X.(Hndxp_au@126.com)
作者机构：
[Xiong, Dahong; Dai, Xiaopeng] School of Information Science and Technology, Hunan Agricultural University, ChangSha, China
摘要：
The classic theory of Rough sets is based on incomplete information systems. In practicing, decision tables are, however, usually incomplete due to the causes of data outputting or processing. That is to say, there are often default values. In order to deal with incomplete systems, Kryszkiewicz put a Rough sets model on the basis of error tolerance relations. According to this model, constructing discernibility matrixes and discernibility functions is the familiar approach by the current knowledge reduction algorithms. By this means, all reductions can work out. But it has been proved that it is a problem of "NP-hard". So it is more effective when a heuristic search algorithm are used to attain the most optimized or the second most optimized reduction. In this paper, the importance of attributes was defined and used as heuristic information. Then a complete knowledge reduction algorithm was put forward. ©2010 IEEE.
语种：
英文
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从正交三视图重建复杂组合体
作者：
邹北骥;傅自钢
期刊：
计算机辅助设计与图形学学报 ,2010年22(6):984-989 ISSN：1003-9775
通讯作者：
Zou, B.(bjzou@vip.163.com)
作者机构：
[傅自钢; 邹北骥] School of Information Science and Engineering, Central South University, Changsha 410083, China;[傅自钢] School of Information Science and Technology, Hunan Agricultural University, Changsha 410128, China
通讯机构：
School of Information Science and Engineering, Central South University, China
关键词：
投影轮廓;三维重建;三视图;组合体
摘要：
针对具有复杂遮挡关系的组合体三视图轮廓搜索不完备的问题,提出基于动态子视图划分的投影轮廓搜索算法.在应用传统角度判别法找出三视图中所有基环后,以基环为线索动态地划分单向子视图并搜索惯性环,对已找到的环进行二元组匹配,依据二元匹配组动态地划分双向子视图并搜索惯性环;从已找到的所有环中搜索基本形体的投影轮廓,通过拉伸或旋转构建基本形体,对基本形体应用正则布尔运算形成三维形体.实验结果表明,该算法可以完备地搜索出构成复杂组合体的基本形体投影轮廓,包括被遮挡的部分,保证了三维重建的正确性.
语种：
中文
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List scheduling with duplication for heterogeneous computing systems
作者：
Tang, Xiaoyong;Li, Kenli* ;Liao, Guiping;Li, Renfa
期刊：
Journal of Parallel and Distributed Computing ,2010年70(4):323-329 ISSN：0743-7315
通讯作者：
Li, Kenli
作者机构：
[Li, Renfa; Tang, Xiaoyong; Li, Kenli] Hunan Univ, Sch Comp & Commun, Changsha 410082, Hunan, Peoples R China.;[Liao, Guiping; Tang, Xiaoyong] Hunan Agr Univ, Informat Sci & Technol Coll, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Li, Kenli] H;Hunan Univ, Sch Comp & Commun, Changsha 410082, Hunan, Peoples R China.
关键词：
DAG;Duplication;Heterogeneous computing systems;List scheduling
摘要：
Effective task scheduling is essential for obtaining high performance in heterogeneous computing systems (HCS). However, finding an effective task schedule in HCS, requires the consideration of the heterogeneity of computation and communication. To solve this problem, we present a list scheduling algorithm, called Heterogeneous Earliest Finish with Duplicator (HEFD). As task priority is a key attribute for list scheduling algorithm, this paper presents a new approach for computing their priority which considers the performance difference in target HCS using variance. Another novel idea proposed in this paper is to try to duplicate all parent tasks and get an optimal scheduling solution. The comparison study, based on both randomly generated graphs and the graphs of some real applications, shows that our scheduling algorithm HEFD significantly surpasses other three well-known algorithms.
语种：
英文
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Hierarchical classification with dynamic-threshold SVM ensemble for gene function prediction
作者：
Chen, Yiming* ;Li, Zhoujun;Hu, Xiaohua;Liu, Junwan
期刊：
Lecture Notes in Computer Science ,2010年6441(PART 2):336-347 ISSN：0302-9743
通讯作者：
Chen, Yiming
作者机构：
[Chen, Yiming] Hunan Agr Univ, Sch Informat Sci & Technol, Changsha, Hunan, Peoples R China.;[Li, Zhoujun; Chen, Yiming; Liu, Junwan] Comp Sch Natl Univ Def & Technol, Changsha, Hunan, Peoples R China.;[Li, Zhoujun] Univ Beijing, Comp Sch BeiHang, Beijing, Peoples R China.;[Hu, Xiaohua] Drexel Univ, Coll Informat Sci & Technol, Philadelphia, PA 19104 USA.
通讯机构：
[Chen, Yiming] H;Hunan Agr Univ, Sch Informat Sci & Technol, Changsha, Hunan, Peoples R China.
会议名称：
6th International Conference on Advanced Data Mining and Applications(第六届先进数据挖掘及应用国际会议 ADMA 2010)
会议时间：
2010-11-19
会议地点：
重庆
会议主办单位：
[Chen, Yiming] Hunan Agr Univ, Sch Informat Sci & Technol, Changsha, Hunan, Peoples R China.^[Chen, Yiming;Li, Zhoujun;Liu, Junwan] Comp Sch Natl Univ Def & Technol, Changsha, Hunan, Peoples R China.^[Li, Zhoujun] Univ Beijing, Comp Sch BeiHang, Beijing, Peoples R China.^[Hu, Xiaohua] Drexel Univ, Coll Informat Sci & Technol, Philadelphia, PA 19104 USA.
会议论文集名称：
6th International Conference on Advanced Data Mining and Applications(第六届先进数据挖掘及应用国际会议 ADMA 2010)论文集
关键词：
gene function prediction;hierarchical classification;SVM ensemble;dynamic threshold
摘要：
The paper proposes a novel hierarchical classification approach with dynamic-threshold SVM ensemble. At training phrase, hierarchical structure is explored to select suit positive and negative examples as training set in order to obtain better SVM classifiers. When predicting an unseen example, it is classified for all the label classes in a top-down way in hierarchical structure. Particulary, two strategies are proposed to determine dynamic prediction threshold for different label class, with hierarchical structure being utilized again. In four genomic data sets, experiments show that the selection policies of training set outperform existing two ones and two strategies of dynamic prediction threshold achieve better performance than the fixed thresholds. ©2010 Springer-Verlag.
语种：
英文
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Reconstruction of intersecting curved solids from 2D orthographic views
作者：
Fu, Zi-Gang;Zou, Bei-Ji* ;Chen, Yi-Ming;Wu, Ling;Shen, Yue
期刊：
Computer-Aided Design ,2010年42(9):841-846 ISSN：0010-4485
通讯作者：
Zou, Bei-Ji
作者机构：
[Fu, Zi-Gang; Zou, Bei-Ji] Cent South Univ, Sch Informat Sci & Engn, Changsha 410083, Peoples R China.;[Wu, Ling; Fu, Zi-Gang; Shen, Yue; Chen, Yi-Ming] Hunan Agr Univ, Sch Informat Sci & Technol, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Zou, Bei-Ji] C;Cent South Univ, Sch Informat Sci & Engn, Changsha 410083, Peoples R China.
关键词：
Intersecting curved solid;Intersection curve;Orthographic views;Reconstruction;Solid reconstruction
摘要：
This paper presents a new approach to reconstruct curved solids composed of elementary volumes intersecting with one another from three-view engineering drawings. Intersection curves arising from two intersecting curved surfaces are mostly higher order spatial curves, which cannot be described exactly by 2D orthographic projections and normally represented as smooth curves passing through several key points or even simplified as arcs or lines. Approximated sketches of higher order intersection curves in 2D views result in the invalidation of existing methods that need the exact projection information as input. Based on some heuristic hints, our method is able to recover the complete and correct half-profiles of the intersecting elementary volumes using the least traces left by them, which ensure the correctness of solution solids constructed finally. Several examples are provided to show the validation of the described method. © 2010 Elsevier Ltd. All rights reserved.
语种：
英文
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基于色度域划分的马铃薯绿皮检测方法
作者：
虞晓娟;廖桂平;李锦卫;金晶
期刊：
农业工程学报 ,2009年25(S2):314-319 ISSN：1002-6819
通讯作者：
Liao, G.(lgpxf@yahoo.com.cn)
作者机构：
[金晶; 李锦卫; 虞晓娟; 廖桂平] College of Information Science Technology, Hunan Agricultural University, Changsha 410128, China
通讯机构：
College of Information Science Technology, Hunan Agricultural University, China
关键词：
计算机视觉;彩色图像处理;模式识别;马铃薯
摘要：
绿皮是马铃薯品质缺陷之一。为了检测马铃薯的品质,该文提出了一种基于色度域划分的马铃薯绿皮检测方法,从量化角度实现了马铃薯表皮颜色信息的提取。利用基于统计的逐步判别分析方法和支持向量机识别方法构建模型,因局限于特定样本集的特征空间,识别结果稳定性不好。该研究克服了上述方法的缺点,提取色度作为模式识别的特征,并确定了区分正常和绿皮马铃薯的有效色度值区间57～64,再结合二次阈值判别方法对马铃薯的绿皮进行检测。试验结果表明该方法简单、识别率高,而且稳定性强。
语种：
中文
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基于参数L-系统的油菜花朵与花序生长可视化研究
作者：
廖桂平;李锦卫;欧中斌;聂敏
期刊：
农业工程学报 ,2009年25(4):150-156 ISSN：1002-6819
通讯作者：
Liao, G.(lgpxf@yahoo.com.cn)
作者机构：
[李锦卫; 廖桂平; 欧中斌; 聂敏] Institute of Agricultural Information Technology, Hunan Agricultural University, Changsha 410128, China
通讯机构：
Institute of Agricultural Information Technology, Hunan Agricultural University, China
关键词：
虚拟植物;甘蓝型油菜;花朵;花序;L系统;B(e)zier曲面
摘要：
为奠定油菜品种株型设计仿真基础,应用参数L-系统的原理,提出了甘蓝型油菜花朵和花序可视化生长的L-系统模型框架.通过对田间试验测量数据统计分析和归一化处理,用Sigmoid 5参数函数拟合花轴节间长度和直径的生长,用Weibull 4参数函数拟合花柄长度、直径的生长.采用L-系统和预定义Bezier曲面建模方法构建油菜花朵仿真模型.根据Bezier曲面的算法,构建了油菜花朵花瓣和萼片及其曲面模型.最后以L-Studio4.0为平台、结合VC++实现油菜花朵和花序的可视化生长模拟.结果表明,该方法可以真实生成油菜花朵和花序,真实感基本达到要求.
语种：
中文
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一种自适应的XML数据流质量预测策略
作者：
刘波;杨路明;邓云龙
期刊：
系统工程与电子技术 ,2009年31(6):1485-1491 ISSN：1001-506X
通讯作者：
Liu, B.(ltbo99@yahoo.com.cn)
作者机构：
[刘波] Information Science and Technology Coll. of Hunan Agricultural Univ., Changsha 410128, China;[邓云龙] The 3rd Xiangya Hospital of Central-South Univ., Changsha 410013, China;[杨路明; 刘波] School of Information Science and Engineering, Central-South Univ., Changsha 410083, China
通讯机构：
Information Science and Technology Coll. of Hunan Agricultural Univ., China
关键词：
XML数据库;预测;矢量积小波变换;最小二乘支持向量机;XML数据流
摘要：
针对当前XML教据流质量检测存在的不足,提出了一种自适应的XML数据流质量预测方法XAFS.该方法用XML键构建的矢量矩阵作为窗口、利用矢量积小波变换多级分解与重构XML数据流、再结合最小二秉支持向量机对XML数据流质量进行预测;为了更好的适应网络负载,采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测.对比其它相应算法,一系列仿真实验表明所提出算法具有较高的精度与实用性,是XML数据流挖掘的一种有效方法.
语种：
中文
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Biclustering of microarray data with MOSPO based on crowding distance
作者：
Liu, Junwan* ;Li, Zhoujun;Hu, Xiaohua;Chen, Yiming
期刊：
BMC Bioinformatics ,2009年10(4):1-10 ISSN：1471-2105
通讯作者：
Liu, Junwan
作者机构：
[Li, Zhoujun; Chen, Yiming; Liu, Junwan] Natl Univ Deference Technol, Sch Comp, Changsha, Hunan, Peoples R China.;[Liu, Junwan] Cent S Univ Forestry & Technol, Sch Comp Sci, Changsha, Hunan, Peoples R China.;[Li, Zhoujun] Beihang Univ, Sch Comp Sci & Engn, Beijing, Peoples R China.;[Hu, Xiaohua] Drexel Univ, Coll Informat Sci & Technol, Philadelphia, PA 19104 USA.;[Chen, Yiming] Hunan Agr Univ, Sch Informat Sci & Technol, Changsha, Hunan, Peoples R China.
通讯机构：
[Liu, Junwan] N;Natl Univ Deference Technol, Sch Comp, Changsha, Hunan, Peoples R China.
会议名称：
IEEE International Conference on Bioinformatics and Biomedicine
会议时间：
NOV 03-05, 2008
会议地点：
Philadelphia, PA
会议主办单位：
[Liu, Junwan;Li, Zhoujun;Chen, Yiming] Natl Univ Deference Technol, Sch Comp, Changsha, Hunan, Peoples R China.^[Liu, Junwan] Cent S Univ Forestry & Technol, Sch Comp Sci, Changsha, Hunan, Peoples R China.^[Li, Zhoujun] Beihang Univ, Sch Comp Sci & Engn, Beijing, Peoples R China.^[Hu, Xiaohua] Drexel Univ, Coll Informat Sci & Technol, Philadelphia, PA 19104 USA.^[Chen, Yiming] Hunan Agr Univ, Sch Informat Sci & Technol, Changsha, Hunan, Peoples R China.
关键词：
Gene Ontology;Particle Swarm Optimization;Particle Swarm;Pareto Front;Microarray Dataset
摘要：
Background: High-throughput microarray technologies have generated and accumulated massive amounts of gene expression datasets that contain expression levels of thousands of genes under hundreds of different experimental conditions. The microarray datasets are usually presented in 2D matrices, where rows represent genes and columns represent experimental conditions. The analysis of such datasets can discover local structures composed by sets of genes that show coherent expression patterns under subsets of experimental conditions. It leads to the development of sophisticated algorithms capable of extracting novel and useful knowledge from a biomedical point of view. In the medical domain, these patterns are useful for understanding various diseases, and aid in more accurate diagnosis, prognosis, treatment planning, as well as drug discovery. Results: In this work we present the CMOPSOB (Crowding distance based Multi-objective Particle Swarm Optimization Biclustering), a novel clustering approach for microarray datasets to cluster genes and conditions highly related in sub-portions of the microarray data. The objective of biclustering is to find sub-matrices, i.e. maximal subgroups of genes and subgroups of conditions where the genes exhibit highly correlated activities over a subset of conditions. Since these objectives are mutually conflicting, they become suitable candidates for multi-objective modelling. Our approach CMOPSOB is based on a heuristic search technique, multi-objective particle swarm optimization, which simulates the movements of a flock of birds which aim to find food. In the meantime, the nearest neighbour search strategies based on crowding distance and ε-dominance can rapidly converge to the Pareto front and guarantee diversity of solutions. We compare the potential of this methodology with other biclustering algorithms by analyzing two common and public datasets of gene expression profiles. In all cases our method can find localized structures related to sets of genes that show consistent expression patterns across subsets of experimental conditions. The mined patterns present a significant biological relevance in terms of related biological processes, components and molecular functions in a species-independent manner. Conclusion: The proposed CMOPSOB algorithm is successfully applied to biclustering of microarray dataset. It achieves a good diversity in the obtained Pareto front, and rapid convergence. Therefore, it is a useful tool to analyze large microarray datasets. © 2009 Liu et al; licensee BioMed Central Ltd.
语种：
英文
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A rapid and precise interpolator for CNC smooth curve interpolation
作者：
Wang, Xingbo* ;Chen, Gang;Zeng, Liancheng
期刊：
Proceeding 2009 IEEE 10th International Conference on Computer-Aided Industrial Design and Conceptual Design: E-Business, Creative Design, Manufacturing - CAID and CD'2009 ,2009年:879-883
通讯作者：
Wang, Xingbo
作者机构：
[Wang, Xingbo; Chen, Gang; Zeng, Liancheng] Hunan Agr Univ, Coll Informat Sci & Technol, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Wang, Xingbo] H;Hunan Agr Univ, Coll Informat Sci & Technol, Changsha 410128, Hunan, Peoples R China.
会议名称：
2009 IEEE 10th International Conference on Computer-Aided Industrial Design & Conceptual Design(2009 IEEE 第十届国际计算机辅助工业设计与概念设计学术会议 CAID&CD'2009)
会议时间：
2009-11-26
会议地点：
温州
会议论文集名称：
2009 IEEE 10th International Conference on Computer-Aided Industrial Design & Conceptual Design(2009 IEEE 第十届国际计算机辅助工业设计与概念设计学术会议 CAID&CD'2009)论文集
关键词：
Numerical Control System;Rapid Interpolation;High Precision;Firmware
摘要：
Rapid and precise interpolation of curves has been a key issue in development of computer numerical control(CNC) systems. With the development of firmware, it is a new attempt to perform the interpolation by means of firmware. This paper presents a method to develop a rapid and precise interpolator that can produce a smooth interpolating curve. An algorithm is first shown to construct a smooth interpolating curve and a way is put forward to calculate the constructed curve with firmware;then details are introduced to design and implement the firmware units that perform rapid and precise calculations. Factors related with the computational process control and precision control are also investigated and made clear in the paper. ©2009 IEEE.
语种：
英文
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A new algorithm with its Scilab implementation for solution of bordered tridiagonal linear equations
作者：
Wang Xing-Bo*
期刊：
OSSC-2009 - Proceedings of 2009 IEEE International Workshop on Open-source Software for Scientific Computation ,2009年:11-14
通讯作者：
Wang Xing-Bo
作者机构：
[Wang Xing-Bo; Wang, XB] Hunan Agr Univ, Coll Informat Sci & Technol, Changsha, Hunan, Peoples R China.
通讯机构：
[Wang Xing-Bo] H;Hunan Agr Univ, Coll Informat Sci & Technol, Changsha, Hunan, Peoples R China.
关键词：
Linear equations;bordered tridiagonal equations;Parallel computation;algorithm;Scilab
摘要：
An approach is presented to solve bordered tridiagonal linear equations (BTLES). By the approach, a BTLE is first converted into three or more tridiagonal linear equations (TLES) that are independent each other, then the solution of the BTLE can be obtained via the solutions of the TLES. Since the TLES are independent each other, their solution can be obtained via parallel computing under heterogeneous environments. The approach costs at most O(n <sup>2</sup>) of time complexity in sequential mode. Detail mathematical deduction is presented to reveal the approach and a framework is introduced to implement the approach. The approach, which can also be available for grid computing, greatly increases the flexibility and agility of computations as well as the computational efficiency. ©2009 IEEE.
语种：
英文
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