共查询到20条相似文献，搜索用时 15 毫秒
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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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李威 《遵义师范学院学报》1996,(1)
How do children acquire their mother tongue? Are the process in acquiring L1 (first language) and L2 (second language) the same? These questions always arouse the interests of the linguists. For many years, linguists have made a lot of research on first language acquisiton. They have put forward several hypothesis 相似文献
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ＴＨＥＴＡＹＬＯＲＥＸＰＡＮＳＩＯＮＯＦＡＦＵＮＣＴＩＯＮＯＦＦＵＮＣＴＩＯＮＳＳｏｎｇＢａｉｓｈｅｎｇ（宋柏生）（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｎｉａｔｉｃｓａｎｄＭｅｃｈａｎｉｃｓ）ＴＨＥＴＡＹＬＯＲＥＸＰＡＮＳＩＯＮＯＦＡＦＵＮＣＴＩＯＮＯ... 相似文献
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In this paper the calculation formulae of optimum beginning time-inter-val and optimum finishing time-interval between every two adjacent operations forthe most general current production network are derived.Two examples show thatthese formulae are very convenient for calculation. 相似文献
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An open-ended coaxial line reflection method especially suitable for meas-uring the dielectric properties of biological tissue in vivo is described.This method offersthe advantage of not requiring any special preparation of the samples to be measured but aclose contact with the open end of a coaxial line.It is,therefore,very convenient to acquirea large number of measurement data in broad band rapidly.The method may also be usedto measure the properties of other substances.The measuring system consists of a networkanalyzer controlled by a microcomputer and calibrated by using ANA procedure to elimi-hate the influnce of error network introduced by the adapter,some connectors,etc.In or-der to reach higher accuracy,the iterative method is used to determine the parameters ofthe equivalent circuit.Measurements of permeativities of some living tissues have been per-formed in the frequency band of 0.5-2GHz.Compared with the results known in somepapers,the validity of this method has been confirmed.The difference in dielectric proper-ties between living and dead tissues,and the tissue permeativites(ε)versus frequency andduration of measurement after death have also been measured. 相似文献
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以多体系统理论为基础，探讨机器人系统动力学的几何意义，分析现有算法中的误差累积现象及产生“能量耗散”的原因，讨论动力学方程系数间的相互关系，并建立机器人系统动力学的正则方程．采用辛格式积分消除了动力学计算的误差累积，提高了计算精度．以平面关节机器人为例，进行了数值分析与计算． 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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《读与写:教育教学刊》2007,(10):I0001-I0002
Rescach on Campus Culture Eutering Society and College Student＇ s Education for All-round Development;A Probe into Self-learning in Phyaical Education under New Curriculum;Discussion over College Libraryr in Freshmen Education;Superficial View on How to Learn and Memorlze English Vocabulary; 相似文献
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用原子学中Ｒｕｔｈｅｒｆｏｒｄ离子散射定律，对快离子导体中三元玻璃体的离子导电机理作微观理论阐述． 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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Constanta Olteanu Lucian Olteanu 《International Journal of Science and Mathematics Education》2012,10(4):803-826
The research study this article is based on aims to implement research knowledge to teaching, that is, the concept of critical aspects and dimensions of variation used in the variation theory. To do this, the researchers worked with willing teachers to explore how to make mathematics teaching more effective. This paper illustrates how teachers make use of a learning theory, the variation theory, as well as their own professional expertise and collaboration to help students improve their mathematical understanding of subtraction as well as their learning of it. The students’ tests, examinations of students’ mathematical work, the teachers’ lessons plan and reports of the instructions for lessons form the data base for the article. The analysis indicates that one of the critical aspects in the process of implementation of the variation theory in the teachers’ practice was to identify the critical aspects in students’ learning. Another critical aspect in the implementation of the variation theory was to open up dimensions of variation in the identified critical aspects of the students. By giving teachers the possibility to develop the ability to identify critical aspects in students’ learning, dimensions of variation are opened up in these aspects, and by applying this knowledge in the daily teaching, they have the possibility to improve students’ learning. The findings suggest that developing an understanding of the students’ critical aspects can be a productive basis in helping teachers make fundamental changes in their instructions and improve students’ learning. 相似文献
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如果你的亲友、同事、笔友等欣逢喜事(诸如结婚周年、生日、孩子出生、订婚、提升、入学、得奖),你可立刻寄上一封非常简洁的贺信。内容必须简单明了,突出主题。最好使用私人信纸,这比公司信纸显得更加亲近。如使用公司信纸,需用手写。 相似文献
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Oscar Wllde 《教学随笔》2005,(4)
奥斯卡·王尔德的语言叙事状物生动传神,能启发读者的联想;词藻华美,形象性强,但句子结构简洁。请在阅读时注意体会。 奥斯卡·王尔德,19世纪爱尔兰作家。 SanFrancisco is a really beautiful city.ChinaTown,peopled1by Chinese labourers,is the most artistic town I have evercomeacross.The people-strange,melancholy2 Orientals3,whommany people would call common,and they are certainly verypoor-have determined that they will have nothing about themthat is not beautiful.In the Chinese restaurant,where the… 相似文献
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