《应试指导》帮我圆了考研梦

去年七月正在考研备战紧张时刻,我见到了《数学竞赛与考研应试指导》(龚冬保等编,西北工业大学出版社出版)这本书,被书中大量富有启发性的综合例题及全部实战原题等丰富资料所吸引.我首先做前面每一部分的单项训练,有的题会做,有的题不会做.不会做的,就看书上的解题思路,觉得豁然开朗,受益匪浅.经过做题练习,我的解题水平逐渐提高了.临考前一个月,每天以实战状态认认真真地做一套往年考题.选择题、填空题都详细地写出选、填根据,每做一套题就总结一下心得,成绩一点儿一点儿的往上提高.今年进入考场,就觉得试题有一种似曾相识的感觉,做题的时…     

KT—5C边缘等离子体湍流性质的实验研究

利用四探针方法系统地研究了ＫＴ－５Ｃ托卡马克边缘等离子体的湍流性质。实验结果指出，在限制器内０．５ｃｍ处，有一自然产生的径向电场剪切层，由Ｅｒ×Ｂ引起的等离子体整体的极向旋转在剪切层外沿着离子逆磁漂移方向，而在剪切层内则是沿着电子逆漂移方向的。     

Performance improvement of 10-Gb/s XGM wavelength conversion by using polarization control structure

By utilizing the cross polarization modulation effect in semiconductor optical amplifier(SOA), the extinc tion ratio of cross gain modulation(XGM)wavelength conversion was enhanced, the pattern effect was significantly reduced,and the power penalty of wavelength conversion was reduced by 5 dB simultane-ously. Furthermore, by adjusting the settings of polarization controllers, both inverted and non-inverted wavelength conversion can be achieved right in the same wavelength converter.     

The Convergences of Bivariate Integral Jackson Interpolating Operators in Orlicz Spaces

ＴｈｅＣｏｎｖｅｒｇｅｎｃｅｓｏｆＢｉｖａｒｉａｔｅＩｎｔｅｇｒａｌＪａｃｋｓｏｎＩｎｔｅｒｐｏｌａｔｉｎｇＯｐｅｒａｔｏｒｓｉｎＯｒｌｉｃｚＳｐａｃｅｓ尚增科，王有一，盛保怀ＴｈｅＣｏｎｖｅｒｇｅｎｃｅｓｏｆＢｉｖａｒｉａｔｅＩｎｔｅｇｒａｌＪａｃ...     

一道常见力学题的剖析

本文对链条从光滑桌面滑下问题中链条的运动情况和受力情况作了分析，并对常见该题的命题提出异议．     

日本大学低年级物理实验的现状

1 前言毋庸置疑,在大学低年级的物理教育中,物理实验同物理学课程及物理学演示起着同样重要的作用.物理实验的方法和内容,就是在同一所大学中,也会根据做实验的学生人数、设施、设备、实验时间(学分数)、教材(实验讲义、录像(VTR)、计算机辅助教学(CAI)等)、器材、预算、任课教员数及其组成     

QUANTITATIVE EXPLANATION ON STRUCTURE-CARCINOGENIC ACTIVITY RELATIONSHIP OF AROMATIC AMINES BY DI-REGION THEORY

Di-region theory, the theory for the mechanism of carcinogenesis, has been extendedsuccessfully on the quantitative Structure-carcinogenic activity relationship (QSCAR) of 63aromatic amines. A quantitative equation for the QSCAR of aromatic amines has been estab-lished by the mechanism conception of the specialized di- functional alkylation between thenitrenium ion of the amino group and the epoxide of the aromatic ring. The agreementbetween calculation and experiment comes up to 98%. Thus, it can now express the puzzlingvariation of the carcinogenicity of aromatic amines, as a comprehensible structure-chemicalreactivity relationship.     

离焦散斑照相术的错位干涉特性及其应用

通过相关计算和滤波分析,得出了错位干涉的特性,并据此对散斑错位干涉术的应用进行了评论。