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A new algorithm for degree-constrained minimum spanning tree based on the reduction technique

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Progress in Natural science:Materials International 2008年第4期18卷 495-499页

作者： Aibing Ning a, Liang Ma a, Xiaohua Xiong b a School of Management, university of Shanghai for science and technology, Shanghai 200093. {3. b college of computer and Information, Shanghai Second Polytechnic university, Shanghai 201209, {3. School of Management University of Shanghai for Science and Technology Shanghai 200093 China college of computer and Information Shanghai Second Polytechnic University Shanghai 201209 China

The degree-constrained minimum spanning tree (DCMST) is an NP-hard problem in graph theory. It consists of finding a spanning tree whose vertices should not exceed some given maximum degrees and whose total edge length is minimal. In this paper, novel math- ematical properties for DCMST are indicated which lead to a new reduction algorithm that can significantly reduce the size of the prob- lem. Also an algorithm for DCMST to solve the smaller problem is presented which has been preprocessed by reduction algorithm.

关键词： Degree-constrained minimum spanning tree Reduction algorithm Edge exchange technique Combinatorial optimization

A relative local variational principle for topological pressure

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science china Mathematics 2010年第6期53卷 1491-1506页

作者： MA XianFeng1,CHEN ErCai2,3.& ZHANG AiHua2,4 1Department of Mathematics,East china university of science and {3.,Shanghai 20023.,china 2School of Mathematics and computer science,Nanjing Normal university,Nanjing 210097,china 3.enter of Nonlinear science,Nanjing university,Nanjing 210093.china 4college of Mathematics and Physics,Nanjing university of Posts and Telecommunications,Nanjing 210046,china 1. Department of Mathematics East China University of Science and Technology Shanghai 200237 China2. School of Mathematics and Computer Science Nanjing Normal University Nanjing 210097 China3. Center of Nonlinear Science Nanjing University Nanjing 210093 China4. College of Mathematics and Physics Nanjing University of Posts and Telecommunications Nanjing 210046 China

We define the relative local topological pressure for any given factor map and open cover,and prove the relative local variational principle of this *** precisely,for a given factor map π:(X,T)→(Y,S) between two topological dynamical systems,an open cover U of X,a continuous,real-valued function f on X and an S-invariant measure ν on Y,we show that the corresponding relative local pressure P(T,f,U,y) satisfies sup μ∈M(X,T){ hμ(T,U|Y)+∫X f(x)dμ(x) :πμ=ν}=∫Y P(T,f,U,y)dν(y),where M(X,T) denotes the family of all T-invariant measures on ***,the supremum can be attained by a T-invariant measure.

关键词： pressure conditional entropy relative local variational principle

An Efficient System TiCl_4-Al for the Homocoupling Reaction of Aromatic Aldehydes

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Chemical Research in Chinese Universities 2000年第4期16卷 320-323页

作者： LI Ting-you, WANG Li-ping, CUI Wei, ZHAO Jian-zhang and WANG Zong-mu (college of Life science, jilin university, {3. 13.023. P. R. china) jilin Univ Coll Life Sci Changchun 130023 Peoples R China

The reduction of TiCl4(THF)2 with Al in CH2Cl2 gave a green solution of [Ti2(μ-Cl)2Cl4· (THF)4] (1) which was found to promote the reductive homocoupling of aromatic aldehydes to yield symmetrical 1, 2-diols with hi... 详细信息

关键词： Pinacol coupling reaction Aromatic aldehyde Diastereoselectivity

Analysis and Design on Integrating Healthcare Enterprise Based on Agent

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Analysis and Design on Integrating Healthcare Enterprise Bas...

An Exact Virtual Network Embedding Algorithm Based on Integer Linear Programming for Virtual Network Request with Location Constraint

2010 4th International Conference on Intelligent Information technology Application (IITA2010)

作者： Chunfei Zhang computer Department Heping Campus jilin university {3. china Wanlong Li college of computer science and Engineering {3. university of technology {3. china Zhijun Xu computer Department Heping Campus jilin university {3. china Shanhong Zheng college of computer science and Engineering {3. university of technology {3. china

Integrating the healthcare enterprise （IHE） has been always the most important issue for the development of digital *** the article,based on analysis of current status of medical information,a novel integration model is constructed where agent technology and XML are introduced to medical information resource integration,called HIS-A,which is a agent model,including user agent,management agent,integration agent and data *** each agent,detail arithmetic is *** the last,we also made some advanced research about the key technology.

关键词： Agent HIS-A integrating the healthcare enterprise AI heterogeneous information

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china Communications 2016年第8期13卷 177-183页

作者： Zeheng Yang Yongan Guo School of computer science and Engineering University of Electronic Science and Technology of China(UESTC) college of Telecommunications and Information Engineering Nanjing University of Posts and Telecommunications

Network virtualization is known as a promising technology to tackle the ossification of current Internet and will play an important role in the future network area. Virtual network embedding(VNE) is a key issue in network virtualization. VNE is NP-hard and former VNE algorithms are mostly heuristic in the *** exact algorithms have been developed in recent years. However, the constraints of exact VNE are only node capacity and link *** on these, this paper presents an exact VNE algorithm, ILP-LC, which is based on Integer Linear Programming(ILP), for embedding virtual network request with location constraints. This novel algorithm is aiming at mapping virtual network request(VNR) successfully as many as possible and consuming less substrate *** topology of each VNR is randomly generated by Waxman model. Simulation results show that the proposed ILP-LC algorithm outperforms the typical heuristic algorithms in terms of the VNR acceptance ratio, at least 15%.

关键词： network virtualization virtual network embedding exact VNE algorithm integer linear Programming location constraint VNR acceptance ratio

Approach to the Relation of Mutual-Feed Joint-Variation in Groundwater Management Model

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Journal of Earth science 2012年第3期23卷 349-358页

作者：李平卢文喜靳孟贵杨青春 college of Chemistry and Materials South-Central University for Nationalities School of Environmental Studies China University of Geosciences college of Environment and Resources Jilin University

In groundwater management,the exchanges between groundwater and other water such as surface water and spring water need to be *** exchange is dependent on the ground-water level,which is called *** pumping rate,groundwater level,and covariate interact and the relation of mutual-feed joint-variation is used to describe their *** article presents a new approach of dealing with the relation in groundwater management *** mathematical for-mulation of the relation,as an additional equality constraint in the optimization model,is developed using response matrix *** the groundwater management model with covariate is set *** code for the simulation and management of groundwater system with covariate is programmed with Fortran 90,and the optimal pumping rate,groundwater level,and covariate are *** approach is verified with a hypothetical ***,the approach is applied to the groundwater management of Qianguo（前郭） area in western jilin（吉林） *** results indicate that the ap-proach is *** provides a universal solution for various covariates and reduces the computational complexity compared to iteration *** approach is proven to be very efficient to solve ground-water management problem with covariate.

关键词： covariate relation of mutual-feed joint-variation groundwater management response matrix

Construction of EGFP-tagged rBCG of *** and distribution in chickens

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science china(Life sciences) 2009年第3期52卷 278-283页

作者： WANG QiuYue1,LI JianHua1,ZHANG XiChen1,LIU ChengWu2,CAO LiLi1,REN KeYan3.GONG PengTao1,CAI YaNan11 college of Animal science and Veterinary Medicine,jilin {3.,changchun 13.062,china 2 Shenyang Police Dog Training School,Shenyang 11003.,china 3.Veterinary science Institute of jilin Province,changchun 13.062,china 1. college of Animal science and Veterinary Medicine Jilin University Changchun 130062 China 2. Shenyang Police Dog Training School Shenyang 110034 China 3. Veterinary science Institute of jilin Province Changchun 130062 China

Chicken coccidiosis is a major parasitic disease with substantial economic burden to the poultry *** green fluorescent protein(EGFP) tagged recombinant Bacille Calmette-Guerin(rBCG),as a fusion protein with coccidian rhomboid antigen was constructed to track rBCG in vivo in chickens in this *** of chickens with one dose of rBCG pMV3.1-Rho/EGFP induced humoral immune *** colonization of rBCG in liver,spleen,lung,kidney and caecum was observed by laser confocal ***-time quantitative RT-PCR showed a rise expression level of rhomboid protein on the 7th day and a peak on the 14th day and disappearance on the 28th day after *** results have significant implications for the development of rBCG vaccines against avian coccidiosis.

关键词： coccidiosis rBCG EGFP rhomboid laser confocal microscopy real-time RT-PCR

Personalized Emotion Space for Video Affective Content Representation

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Wuhan university Journal of Natural sciences 2009年第5期14卷 393-398页

作者： SUN Kai,YU Junqing,HUANG Yue,HU Xiaoqiang,LIU Qing college of computer science and {3.,Huazhong university of science and {3.,Wuhan 43.074,Hubei,china college of computer science and {3. Huazhong University of Science and Technology Wuhan 430074 Hubei China

A personalized emotion space is proposed to bridge the ＂affective gap＂ in video affective content understanding. In order to unify the discrete and dimensional emotion model, fuzzy C-mean （FCM） clustering algorithm is adopted to divide the emotion space. Gaussian mixture model （GMM） is used to determine the membership functions of typical affective subspaces. At every step of modeling the space, the inputs rely completely on the affective experiences recorded by the audiences. The advantages of the improved V-A （Velance-Arousal） emotion model are the per- sonalization, the ability to define typical affective state areas in the V-A emotion space, and the convenience to explicitly express the intensity of each affective state. The experimental results validate the model and show it can be used as a personalized emotion space for video affective content representation.

关键词： video affective computing personalized emotion space video affective content representation fuzzy C-means clustering (FCM) Gaussian mixture model (GMM)

Application of Element-Free Method to water quality analysis of Miyun reservoir

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science china Earth sciences 2005年第Z2期48卷 303-310页

作者： GU Zhaosheng, YANG Tianxing & XU Qing changchun Institute of technology, changchun 130012. china {3. of Geo-Exploration science and technology, jilin university, changchun 13.026, china National Research Center of Geoanalysis, Beijing 10003., china changchun Institute of technology Changchun 130012 China college of Geo-Exploration science and technology Jilin University Changchun 130026 China college of Geo-Exploration science and technology Jilin University Changchun 130026 China National Research Center of Geoanalysis Beijing 100037 China

This paper presents a 3. mathematical model for transfer and transform of water contaminants in reservoir, describes the discrete methods and the compute process of using an element-free collocation method. By these models and methods, the water quality conditions of Miyun reservoir area, the quantified description of three dimensions concerning the distribution and change of diversified contaminants are obtained within the assigned time. The distributions of total nitrogen and total phosphorus of the reservoir area in 2003. 2004 and 2005 are simulated and forecasted by the boundary conditions in 2003. so the main development trend is shown. It is found through calculation that: The contribution of the bed mud with regard to total phosphorus is comparatively marked. On the whole, the influence factor of the bed mud in the reservoir area and other comprehensive factors to total phosphorus are quite great. The influence of the living things or other function in the surface water of the Chaohe River valley in the east of the reservoir on the total phosphorus is comparatively conspicuous. Within the reservoir area in spring, summer and autumn, the concentration distribution of total nitrogen is basically in the trend of a slow progressive decrease, but the concentration of total phosphorus increases progressively. It is just contrary in autumn, winter and spring, the concentration of total nitrogen increases and the concentration of total phosphorus decreases. On the whole of the year's development, the total nitrogen is basically in a steady state, and the total phosphorus is in the increasing trend with years, but the kind of the trend is not conspicuous.

关键词： Miyun reservoir, water wuality analysis, Element-Free Method.