A New Subspecies of Wild Pig (Sus scrofa)in Hainan Island, China

Thereare5subspeciesofwildpig(Susscwt)inChina.Theyare:(1)S.s.taivanus;(2)S.s.moupinensis;(3)S.s.nigripes;(4)S.s.ussuricus;(5)S.s.chirodnta(WangQishanetal.,1990).ButthewildpiginHainanIslandhasnotbeenmadeacomprehensivelytaxonomicstudyyet.ItwasincorporatedintoSusscrofachirndonta(Allen,1940;EllermanandMorrison-Scott,1951;ZouYuhengetal.,.1962;ShouZhenghuangetal.,1966;GuangdongInstituteofEntomologyetal.,1983).Afterexamining17specimensofwildpiginHainanIslandand13specimensofwildpiginSouthChi…     

Editorial Board of Journal of Shanghai University

Editor-in-ChiefDAI Shi-qiang(戴世强)Deputy Editors-in-ChiefWANGShuo-zhong(王朔中)QIANJin-wu(钱晋武)WANG Hai-jiang(王海江)Invited MembersZHOU Bang-xin(周邦新)LIU Gao-lian(刘高联)WAN Xiao-jing(万晓景)JIANG Er-xiong(蒋尔雄)Johan LIU(刘建影)(Sweden)MA Ou(马欧) (U.S.A.)WANG Tie-jun(王铁军)YOU Xiao-hu(尤肖虎)SHE Zhen-su(佘振苏)QIAN Yue-hong(钱跃)(U.S.A.)Omer Van der Biest(Belgium)MembersCHEN Guo-cheng(陈国呈)CHEN Yu-guang(陈宇光)DAI Shi-qiang(戴世强)DING You-…     

关于类似广义Dedekind和S_2(h,m,n,k)的几个恒等式

利用初等方法研究了类似广义Dedekind和S2(h,m,n,,k)的算术性质.借助Bernoulli多项式及三角恒等式,探究了S2(qh,m,n,qk)与S2(h,m,n,k)的关系,以及当P为奇素数时∑S2(h+bk,m,n,pk)与S2(h,m,n,k)和S2(ph,m,n,k)的关系,提出并证明了两个恒等式,推广了有关文献的结论.     

(T,S)-凸直觉模糊集

在K.Atanassov提出的直觉模糊集的概念基础上,利用T-范数和S-范数,定义了(T,S)-凸直觉模糊集,(T,S)-直觉模糊子空间和(T,S)-直觉模糊仿射集,并讨论了(T,S)-凸直觉模糊集的一些性质,(T,S)-直觉模糊子空间和(T,S)-直觉模糊仿射集之间的关系。     

模糊(S,θ)-系的直积、上积和张量积

在给出模糊(S,θ)-系定义后,将直积、上积和张量积这三个概念引入到模糊(S,θ)-系中.任何一个模糊(S,θ)-系集都有直积以及任何一个非空模糊(S,θ)-系集都有上积.最后还给出了模糊(S,θ)-系的张量积和S-系的张量积之间的一个关系.     

巧用重心性质,妙解竞赛试题

<正>《中学数学实验教材》第二册 (上 ) 2 5 9页有这样一道习题 :求证三角形重心与其它两个顶点组成的三个三角形等积 .即已知 : ABC的三条中线AD、BE、CF相交于G .求证 :S ABG =S BCG =S CAG.     

More Than Parts of the Human Body

1.HeadTheheadisconsideredasthemostimportantpartofthehumanbody,oftencomparedtoaruleroraleader.SowecallthepresidentoftheU.S.AandthePrimeMinisterofGreatBritainheadsofgovernments(政府首脑).Wecanalsosaytheheadofafirmorafamily.Theheadiswherethebrainislocated.Thebrainhasthepowertocontroloneselforonesactivity.Therefore,theheadisassociatedwithideasandintelligence.Ihaveagoodheadforsomething,thatis,Imcleveratsomething.Ifayoungmansbehaviorislikeanexperiencedperson,peoplewillcallhimanoldheadonyoungsho…     

New bounds of （s,S） policies in periodical review inventory systems

We study the stochastic inventory problem with optimal （s,S） policies.In a finite horizon model with lost sales,we establish new lower and upper bounds of s and S.These bounds have structural implications for the optimal solutions.Consequently,when demand has a generalized phase type distribution,there are no more than a pre-determined number of minima.Similar bounds can also be found for the system where unsatisfied demand is backordered instead of lost sales.     

Two Methods of AES Implementation Based on CPLD／FPGA

InOctober 2 0 0 0 ,theNationalInstituteofStandardsandTechnology (NIST)decidedtoproposeRijndaelcipherastheadvancedencryptionstandard (AES) .ItisexpectedthatAESwillbeusedbyU .S.Governmentandtheprivatesec tor,andislikelytobecomethedefactoworldwideencryptionstandardtoprotectallkindsofsecretcommunicationinthefollowingseveraldecades,whichwillinevitablycreatealargedemandforefficientimplementationofAES ,especiallyinhardware.CPLD/FPGAhasbeenprovedtobeveryeffectiveinimplementingencryptionalgo…     

集合{(a2+b1-c2-d2)2-4(ab-cd)2 |a,b,c, d∈Z}关于乘法封闭

[问题315.1]设集合S={(a2 b2-c2-d2)2-4(ab-cd)2| a,b,C,d∈Z}.求证:S关于乘法封闭,即任给X,y∈S,必有xy∈S.     

Effect of crystallization conditions on polymorphic diversity of malic acid RS — Racemate

Enantiomers (R(+) and S(-)),RS-racemate (double compound) and (R+S)-conglomerate (mechanical mixture of enantiomers) of malic acid C 4 H 6 O 5 have been investigated by means of X-ray diffractometry and high temperature X-ray diffraction method.The RS-racemate was found to be able to form three polymorphic modifications,which we denominated as M1 (monoclinic,space group P2 1 /c),M2 (monoclinic,space group Cc),and Tc (triclinic,space group P-1),the latter modification having been unknown before.Modification Tc was also described,and its Xray diffraction characteristics,including interplanar spacings d,hkl indices,unit cell parameters,were defined.In addition,X-ray diffraction characteristics for both reported earlier M1 and M2 monoclinic polymorphic modifications were measured with higher accuracy.The ability of RS-racemate to form one of the above three modifications (M1,M2,and Tc) or their mixtures containing various proportions and combinations of the components (M1+M2,M1+Tc,or M2 +Tc) was found to depend on the type of crystallization medium (a melt,aqueous medium,ethanol or acetone solution),crystallization rate (from 2-3 minutes to 4 months),and crystallization temperature.Heating S-enantiomer and M1 RS-racemate up to their respective melting points (100 ℃ and 124 ℃,correspondingly) only made them undergo thermal deformations,while heating (R+S)-conglomerate in the temperature range of 96-110 ℃ resulted in its homogenization to form M2 RS-racemate,which,near the melting point (118 ℃),namely,in the range of 112-116 ℃,was transformed into M1 RS-racemate.     

高中英语新课标选修八 Unit 1 A land of diversity学案

一、话题导读美利坚合众国(the United States of America),简称美国(U.S.A、U.S.、United States、the States或者America),是一个由50个州和华盛顿特区组成的宪政联邦制共和制国家,美国本土东濒大西洋,西临太平洋,北靠加拿大,南接墨西哥,阿拉斯加州位于北美大陆西北方,夏威夷州则是太平洋中部的群岛,另有波多黎各、北马里亚纳等海外     

在美国,送儿子入学(二)

外籍儿童的语言学校 由于儿子刚来美国,为了较快地提高他的英语听说能力,我为他报名进入E.S.L(EngLish as Second Language)学校。这个系统也是政府安排和管理的,为补外裔、外籍儿童接受义务教育的不足。 为了不影响学前班正规上课时间,E.S.L.学校上课时间安排在中午两个     

Synthesis of Silver Sulf ide Quantum Dots Via the Liquid–Liquid Interface Reaction in a Rotating Packed Bed Reactor

We developed the high-gravity coupled liquid–liquid interface reaction technique on the basis of the rotating packed bed(RPB) reactor for the continuous and ultrafast synthesis of silver sulfi de(Ag_2S) quantum dots(QDs) with near-infrared(NIR) luminescence. The formation of Ag_2S QDs occurs at the interface of microdroplets, and the average size of Ag_2S QDs was 4.5 nm with a narrow size distribution. Ag_2S QDs can disperse well in various organic solvents and exhibit NIR luminescence with a peak wavelength at 1270 nm under 980-nm laser excitation. The mechanism of the process intensifi cation was revealed by both the computational fl uid dynamics simulation and fl uorescence imaging, and the mechanism is attributed to the small and uniform droplet formation in the RPB reactor. This study provides a novel approach for the continuous and ultrafast synthesis of NIR Ag_2S QDs for potential scale-up.     

学单词,原来如此轻松

片段:1.T:I’m tired.Boys and girls,let’s go to my home.OK?S:OK!T:This is my home.It’s nice.Shall we watch TV?S:Good!T:Let’s go to the sitting-room.(教师在预先画好的一所漂亮的房子上,贴上客厅的图片,教学新单词sitting-room)2.生在师的引导下以各种形式读新单词。3.T:What’s this?S:It’s a sofa.T:Where’s the sofa?S:It’s in the sitting-room.     

An analysis of“The Love Song of J.Alfred Prufrock”

T.S.Eliot ’s poem,"The Love Song of J.Alfred Prufrock",different and unusual,is difficult to interpret.T.S.Eliot rejects logic connection,thus his poems lack logic interpretation.He himself justifies himself by saying:he wrote it to want it to be difficult.The dissociation of sensibility,on the contrary,arouses the emotion of readers immediately.     

W,-mlB道中考几何题的启示

题目:在ABC中,已知AB=2a,∠A=30°,CD是AB边的中线.若将ABC沿CD对折起来,折叠后2个小ACD、BCD重叠部分的面积恰好等于折叠前ABC的面积的41.有如下结论:①AC边的长可以等于a;②折叠前ABC的面积可以等于23a2;③折叠后,以A、B′为端点的线段AB′与中线CD平行且相等.其中,正确结论的个数是()个.(A)0(B)1(C)2(D)3(2003,天津市中考题)试题提供的答案为(D).某同学就结论①提出质疑,其理由是:图1如图1所示,因为SCDE=41SABC,ACD和BCD等底同高,即SCDE=21SACD,而ACD和CDE所在AC边上的高相等,…     

(λ,1]-fuzzy子群

给出了一种新型的fuzzy子群的定义(称之为(λ,1]-fuzzy子群),它是Rosenfeld的定义及S.K.Bhakat和P.Das定义的推广.还给出了(λ,1]-fuzzy子群的等价定义,给出了(λ,1]-fuzzy子群的定义,研究了(λ,1]-fuzzy商群及(λ,1]-fuzzy子群的同态象性质.     

Some Properties and Theorems of Belief Logic

lintroductionNOnnlonotonicreasoningisbeconlinganactivefieldintileresearcncommunity.DefaultreasoningisoneoftheInostimportantformsin11onnlonotonicreasoning.Butinersisnotadefiniteinterpretationfortileconceptionofextensionindefaulttheory.S.Kundtlproposeda11ew…     

‘s属格,of属格和双重属格

在单形名词禾尾加“’S”，读音与复形结尾的读音一样，但在“咝”音之后的名词读作[iz]。如：the boy’s mother，hostress’s[‘haustrasiz]clothes(女主人的衣服)。