共查询到20条相似文献，搜索用时 484 毫秒
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ＴＨＥＴＡＹＬＯＲＥＸＰＡＮＳＩＯＮＯＦＡＦＵＮＣＴＩＯＮＯＦＦＵＮＣＴＩＯＮＳＳｏｎｇＢａｉｓｈｅｎｇ（宋柏生）（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｎｉａｔｉｃｓａｎｄＭｅｃｈａｎｉｃｓ）ＴＨＥＴＡＹＬＯＲＥＸＰＡＮＳＩＯＮＯＦＡＦＵＮＣＴＩＯＮＯ... 相似文献
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ＩＮＴＲＯＤＵＣＴＩＯＮＩｎｔｈｅＭａｎｉｆｅｓｔｏｏｆｔｈｅＣｏｍｍｕｎｉｓｔＰａｒｔｙ,ＭａｒｘａｎｄＥｎｇｌｅｓｄｅｃｌａｒｅｄ :“Ｉｎｐｌａｃｅｏｆｔｈｅｏｌｄｂｏｕｒｇｅｏｉｓｓｏｃｉｅｔｙ ,ｗｉｔｈｉｔｓｃｌａｓｓｅｓａｎｄｃｌａｓｓａｎ ｔａｇｏｎｉｓｍｓ,ｗｅｓｈａｌｌｈａｖｅａｎａｓｓｏｃｉａｔｉｏｎ ,ｉｎｗｈｉｃｈｔｈｅｆｒｅｅｄｅｖｅｌｏｐｍｅｎｔｏｆｅａｃｈｉｓｔｈｅｃｏｎｄｉ ｔｉｏｎｆｏｒｔｈｅｆｒｅｅｄｅｖｅｌｏｐｍｅｎｔｏｆａｌｌ”(Ｍａｒｘ＆Ｅｎ ｇｅｌｓ ,1 984 ) .… 相似文献
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The steady-state electrical conductivity,as well as the dielectric propertiesbetween 2×10~(-4)Hz and 100 kHz,and at 1 GHz,are reported for urease compressed powdersamples of low hydration.The results show that the large,low frequency dielectricdispersion,known as α-dispersion,is due to the build-up of a space charge of protons atthe sample-electrode interfaces.A smaller dispersion,appearing at higher frequencies,isconcluded to be associated with hindered motions of the peptide residues in the molecularstructure of urease.The extent of these polypeptide backbone motions is shown to bestrongly depended on the extent of enzyme hydration.This work is contributed to the de-velopment of conductimetric biosensors. 相似文献
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Nyikahadzoyi Maroni Runesu 《International Journal of Science and Mathematics Education》2013,13(2):261-283
In order to teach mathematics effectively, mathematics teachers need to have a sound mathematical knowledge, but what constitutes sound mathematical knowledge for teaching is subject to debate. This paper is an attempt to unpack what constitutes teacher knowledge of the concept of a function which is a unifying idea in the mathematics curriculum. The central components of the framework, which will be elaborated on in this paper, are: teachers’ subject matter knowledge, teachers’ pedagogical content knowledge, teachers’ technological pedagogical knowledge, technological content knowledge, and technological pedagogical content knowledge in relation to the concept of a function. The framework is informed by Shulman’s (Educational Researcher 15:4–14, 1986) Types of Teachers Knowledge Framework, Ball, Bass &; Hill 29:14–17, 20–22, 43–46 (2005) Mathematical Knowledge for Teaching Framework, and Mishra &; Koehler’s (Teachers College Record 108:1017–1054, 2006) Technological Pedagogical Content Knowledge (TPACK) framework.
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我在网上叫拒绝游泳的鱼。我成日泡在网络里,说着一些自己不懂的话,我管这叫玩深沉。——拒绝游泳的鱼我在网上叫一天到晚游泳的鱼。我成日泡在网络里,说着一些自己不懂的话,我管这叫装幼稚。 相似文献
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ＳＴＡＴＩＯＮＡＲＩＴＹＯＦＡＣＬＡＳＳＯＦＬＡＲＧＥ－ＳＣＡＬＥＤＩＳＣＲＥＴＥ－ＴＩＭＥＳＴＯＣＣＨＡＳＴＩＣＳＹＳＴＥＭＳＷａｎｇＴａｏ（王涛）；ＳｈｅｎｇＺｈａｏｈａｎ（盛昭瀚）（ＩｎｓｔｉｔｕｔｅｏｆＳｙｓｔｅｍｓＥｎｇｉｎｅｅｒｉｎｇ）Ｓ... 相似文献
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探讨无约束优化的一族最优条件数自调比变尺度（ＯＣＳＳＶＭ）算法的收敛性。证明了采用Ｗｏｌｆｅ线性搜索的此族算法对于一般的凸函数是整体收敛的。 相似文献
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ＩＭＰＬＥＭＥＮＴＡＴＩＯＮＯＦＤＩＳＣＯＮＴＩＮＵＯＵＳＣＯＥＦＦＩＣＩＥＮＴＩＮＶＥＲＳＩＯＮＦＯＲＡＣＬＡＳＳＯＦＨＹＰＥＲＢＯＬＩＣＥＱＵＡＴＩＯＮＬｉｕＪｉｊｕｎ（刘继军）（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓａｎｄＭｅｃｈａｎｉ... 相似文献
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This article compares and discusses three counseling approaches and suggests the feasibility in school education 相似文献
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This paper presents a discussion on a problem suggested by N.Salinas(J.Operator Theory,Vol.10,1983),i.e.,if T=(T_1,T_2,…,T_n)is a commuting n-tuple ofhyponormal operators on a complex Hilbert space,do we have(1)(2)δ(T-μ)=dist(μ,σ_l(T)),μ∈C~n?It is proved that the problems(1)and(2)are both true for some commuting n-tuples ofsemihyponormal operators.In general case,problem(1)has a negative answer.As an ap-plication,we point out that there exists a commuting n-tuple of hyponormal operatorsT(n≥2),such that|λ|<,where σ_T(T)denotes J.L.Taylor'sjoint spectra of T,even if the condition of Taylor's joint spectra of T is given. 相似文献
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通过采用压汞计和预吸附相结合的方法，首次直接测量确定了活性炭的全部孔体积．不仅提出一个直接测量多孔物质全部孔体积的方法，而且扩大了压汞计的使用范围．实验证明，即使在中孔和大孔范围内，吸附过程也是从小孔开始，逐渐扩展到较大的孔． 相似文献
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李汝仪 《徐州师范大学学报(哲学社会科学版)》1982,(2)
Albert Camus(1913-1960)was a noted French essayist,novelist and playwright,whose talent as a writer and an artist won him the Nobel Prize for literature in 1957.World War I bereaved him of his father and he was brought up by his mother in strai-tened circumstances.Through education,Camus was able to overstep the boundariesof his environment.Under the influence of the philosopher Jean Grenier,he deve-loped a lifelong interest in literature and philosophy.The fact that he was a victimof tuberculosis,a disease that dogged him all his life,forced him to give up half way 相似文献
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Fannie R. Neumann 《Journal of Jewish Education》2013,79(1):26-36
The question of teacher recruitment for Jewish schools has been on the Jewish community agenda for decades. I have been a practicing Jewish educator for 33 years and in educational administration for 25 years, and I cannot remember a time when there was an abundance of licensed, qualified teachers for Jewish schools. There were always men and women who were available to teach. Most were partially qualified people with some teaching experience. But the fully qualified teacher, especially the one who was effective and successful in the classroom, was a rarity. 相似文献
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By introducing a sinusoidal cylindric ripple of infinitesimal amplitude into aplanar interface when there is convection in the liquid,an expression q(ω)=(t)/δ(t)isobtained for determining the stability of planar interface.The destabilizing perturbationfrequency interval and dangerous frequency for planar interface during solidification of adilute binary alloy under the condition of a sinusoidal cylindric perturbation have been in-vestigated.In comparison with the sinusoidal planar perturbation,the results obtained aremore conformable with the actual situation. 相似文献
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A DYNAMIC MODEL OF MULTIPLE PATH TRAFFIC ASSIGNMENT 总被引：1，自引：0，他引：1
A “Random Shortest Path”traffic assignment model and its algorithm arepresented by simulating the trip-makers'route-choice characters,and the dynamic meth-od is introduced in the assignment model.It is a ideal multiple path assignment modelwhich can be carried out by the dynamic method and static method,can better reflect boththe shortest path factor and the random factor in the route-choice,and is of reasonableassignment volumes.Besides,both dynamic and static softwares particularly suited to thetraffic assignment of large and medium-sized transportation networks arc developed. 相似文献