On Anti-interpretation in Endgame——Man Is Unable to Change the Miserable Life ——Analysis of the Arrangement of Four Characters in The Glass Menagerie

Tennessee Williams is considered as one of the most important American playwrights since World War II. The Glass Menagerie is his first successful drama, which describes a tragic situation of family and means to say that Man is unable to change the miserable life, no matter whatever means he try. This essay focuses on the analysis of the arrangement of the four main characters： Laura, Amanda, Jim and Tom to reveal the theme. Laura is fragile. Amanda is brave. Jim is vital. Tom is sensible. And all of them develop and try the different means to struggle against life, but fail tragically. With the evidence, the paper comes to conclusion naturally that Man is unable to change the miserable life, and he dooms to fail.     

Man Is Unable to Change the Miserable Life——Analysis of the Arrangement of Four Characters in The Glass Menagerie

Tennessee Williams is considered as one of the most important American playwrights since World War II.The Glass Menagerie is his first successful drama,which describes a tragic situation of family and means to say that Man is unable to change the miserable life,no matter whatever means he try,This essay focuses on the analysis of the arrangement of the four main characters:Laura.Amanda,Jim and Tom to reveal the theme.Laura is fragile.Amanda is brave.Jim is vital.Tom is sensible.And all of them develop and try the different means to struggle against life,but fail tragically.With the evidence,the paper comes to conclusion naturally that Man is unable to change the miserable life,and he dooms to fail.     

多段决策的摹矩阵法及其在摆起控制中的应用

摹矩阵方法是解决多阶段决策寻优问题的一种极为简捷的方法。该方法在一定程度上可以替代动态规划法而更有效地解决许多最优控制问题。通过将倒立摆的摆起控制表示为一个求最短时间的多阶段决策问题,可以利用摹矩阵方法寻找单级倒立摆摆起控制的最优路径与最优决策。对一轨道长度受限的单级倒立摆的仿真与实时控制,证明该方法是有效的。     

孔雀菊组织培养快速繁殖研究

孔雀菊（Ａｓｔｅｒｅｒｉｃｏｉｄｕｓ）的花蕾、叶片、茎段（带腋芽）为外植体都可诱导产生新的植株．增殖试验研究，在只含有细胞分裂素（ＢＡ、１～２ｍｇ·Ｌ－１）的增殖培养基中有较高的增殖率，在既含有细胞分裂素，又含有生长素（ＮＡＡ、０．０５～０．１ｍｇ·Ｌ－１）的培养基中增殖率较低，但在后种培养基中产生的苗比前者的健壮．孔雀菊对于生根的要求不严格，在ＭＳ培养基上即可生根，但所需时间较长，而在含一定量的生长素（ＮＡＡ、０．１ｍｇ·Ｌ－１）的生根培养基中植株生根时间较短．本文推荐了可用于生产的经济、实惠的增殖培养基及生根培养基