含有指数项的新混沌系统

本文提出了一个含有指数项的新混沌系统模型,系统中只有5个代数项,混沌系统模型简单,理论分析和数值模拟表明,该系统能产生混沌吸引子。     

国内科技期刊亮点

乳腺癌的总体预后——“非三阴”患者可能优于“三阴”患者；水稻免耕抛栽增产高效，可提高经济效益20％以上；应急地震学研究大有可为;发现早古生代残余洋壳深俯冲的证据.     

Diophantine方程2~m+1=3y~n

证明了方程 2 m+1=3yn 没有适合m >2 ,n >1,y >1的正整数解 (y ,m ,n)     

[Zn(2,2’-bipyridine)_3][Zn(CN)_4]·2H_2O复配物中线型四聚水簇（英文）

通过水热合成法,利用Zn(CN)2,2,2’-联吡啶合成出一种新颖的复配物[Zn(bipy)_3][Zn(CN)_4]·2H_2O(1),它的特点是通过复杂的氢键作用,将一种结构新颖的线性四聚体水簇和[Zn(CN)_4]_2-负电基团连接组装成一种二维超分子网络.并对1进行了包括单晶X-射线衍射、红外、热重以及荧光发射在内的表征与分析.研究发现在室温下310 nm的紫外光激发下,1表现出强烈的荧光发射性质,且发射光波长为437 nm,与绿光非常接近.     

A multi-label classification algorithm based on label-specific features

Aiming at the problem of multi-label classification,a multi-label classification algorithm based on label-specific features is proposed in this paper.In this algorithm,we compute feature density on the positive and negative instances set of each class firstly and then select mk features of high density from the positive and negative instances set of each class,respectively;the intersection is taken as the label-specific features of the corresponding class.Finally,multi-label data are classified on the basis of label-specific features.The algorithm can show the label-specific features of each class.Experiments show that our proposed method,the MLSF algorithm,performs significantly better than the other state-of-the-art multi-label learning approaches.     

Adaptive fuzzy controller for a class of strict-feedback nonaffine nonlinear systems

A robust adaptive fuzzy control scheme is presented for a class of strict-feedback nonaffine nonlinear systems with modeling uncertainties and external disturbances by using a backstepping approach.Fuzzy logic systems are employed to approximate the unknown parts of the desired virtual controls,and the approximation errors of fuzzy systems are only required to be norm-bounded.The function tanh(·) is introduced to avoid problems associated with sgn(·).The tracking error is guaranteed to be uniformly ultimately bounded with the aid of an additional adaptive compensation term.Chua’s circuit system and R o¨ssler system are presented to illustrate the feasibility and effectiveness of the proposed control technique.     

幼儿睡眠异常是生病前兆

幼儿正常睡眠时,安静舒坦、头部微汗、呼吸均匀而无声,如果突然出现打鼾、面红等症状的时候,很可能是生病的前兆。要注意观察孩子的睡眠状况,及早发现各种病症的征兆,及时诊治。良好的睡眠是保证小儿体格及神经发育的必要条件。临床经验表明,一岁以内的乳儿健康活泼的情况皆取决于睡眠质量的好坏。因此,查看幼儿睡     

The Versification of Shakespeare＇s Sonnets

The whole creation of Shakespeare’s 154 sonnets are studied and discussed in 4 main sections.The first section,The Lines,points out that Sonnet 99 consists of 15 lines,Sonnet 126 is composed of 12 lines.The second section,Rhymes,tells that some 19 pairs of unrhymes words are in 19 differents sonnets.The third section,Rhythms,tells the somewhat loose metrical rules based on 3 famous sonnest: Sonnet 18,Sonnet116,and Sonnet 145.The forth section,Rhetoric,discusses the usage of paralletism,repetition,and punning in accordance with Sonnet 66 and Sonnet 135.Readers should be careful when they appreciate Shakespeare’s sonnets in an artistic and aesthetic way.     

TLC工具式早拆支撑体系施工方法

文章结合笔者的工作实践，就TLC工真式早拆支撑体系施工方法进行了探讨。