齐海峰竞技成绩的灰色关联分析及GM(1,N)动态协调模型的研究

采用文献资料法和灰色关联度分析法,对我国优秀男子十项全能运动员齐海峰1999-2002年十项全能的比赛成绩进行统计与分析,运用GM(1,N)动态协调模型对其在总成绩不断提高的各个阶段诸因素间相互联系、相互影响的辩证发展关系进行多方位、多层次研究。结果表明:100米跑、铅球和跳远是影响齐海峰专项成绩的关键因素,其关联度分别为0.8928、0.7443和0.7571,研究还发现,齐海峰在成绩提高的每一个阶段中,系统处于不稳定和非协调发展,其中速度和速度——力量性项目落后是导致系统不稳定和非协调发展的主要因素。     

《全元戏曲·赵氏孤儿记》辑校商榷

本文就《全元戏曲·赵氏孤儿记》的剧目说明提出三点商榷意见。一、赵氏孤儿题材南戏非由纪君祥杂剧《赵氏孤儿》直接影响出现 ,亦非产生在元代后期。二、该剧目说明根据景李虎《元代南戏〈赵氏孤儿记〉的重要价值及版本源流》一文提要而成。然景文所概括的赵氏孤儿剧目的版本源流既不确也不全。三、《六十种曲》本《八义记》并非徐元所作。毛晋于《八义记》下署名徐元 ,造成有清一代著录上的误会。而徐本则是更接近史实的本子。     

Reciprocity of inter-ethnic attitudes in a multicultural society

A national survey of multicultural and ethnic attitudes in Canada was conducted in 1974 (n = 1849). Data were analysed for the 1244 respondents whose ethnicity could be determined as Angloceltic, French, German, Italian or Ukrainian Canadian, A five group by five group intergroup attitude matrix was created, with each group acting both as attitude object and as holder of attitudes. Analysis indicated the existence of reciprocity or balance in the matrix: groups tended to reflect the attitude held toward them back onto the group holding the attitude. However this structural balance was moderated by the existence of shared attitudes about the position of a group in the national ethnic hierarchy. Further analysis indicated the existence of ethnocentrism in the matrix: attitudes toward ingroup and positive reference groups were more positive than toward out-groups. Perceived intergroup similarity and familiarity were positively correlated with each other and with intergroup acceptance. Results were discussed in relation to attitude balance theory and ethnocentrism theory, and in their implication for intergroup research in multicultural societies.     

Cognitive development and instructional theory

The foundations of the cognitive-developmental curriculum movement are briefly examined in this paper. The key features of this movement are the recommendations it makes in three areas: curriculum sequencing, curriculum content, and teaching strategies. Each of these areas is critically examined. It is concluded that the grounds for all proposals are purely theoretical. When the data are considered, they either contradict specific proposals or provide no direct evidence.     

CFM56-3发动机N2转速管理系统原理

CFM56-3系列发动机是由美国通用电气公司(GE)和法国国营航空发动机研制公司(SNECMA)组成的国际公司(CFMI)研制生产的为波音B737-300/400/500型航空器翼吊发动机;其N2转速管理系统为飞机提供精确的燃油控制功能以防止发动机超速及失速情况的发生。N2转速管理系统主要通过接受发动机的核心转子转速(N2)和动力角(PLA)来控制燃油流量使发动机实际转速与目标转速相符。     

从Nα到Bμ空间的复合算子

介绍解析函数空间H（D）上的两个子空间Nα和Bμ构造Nα中的检测函数,结合解析函数φ：D→D的函数性质,研究了从Nα到Bμ及其子空间Bμ,0刚之间的复合算子的有界性与紧性．     

关于现代汉语句法结构系统的理论思考

由现代汉语句法结构系统中的“N的P”结构的定性问题切入,评论了汉语语法学界对 “N的P”结构的看法;根据交际功能是语言最重的功能的思想,提出了用表达功能统一句法结构系统的构想。     

野生鸟类对禽流感爆发与传播的影响

2003—2005年高致病性禽流感在亚洲、欧洲等多个国家大范围爆发,引起了全世界的关注,并将视线集中在候鸟身上。结合最近疫情,文章对野生鸟类在禽流感爆发和传播中的作用与影响予以简要分析,并提出了建议。     

C掺杂β-Si3N4的电子结构和光学性质

运用密度泛函平面波赝势方法（PWP）和广义梯度近似（GGA）,对替代式C掺杂β-Si3N4的超晶胞电子结构进行了模拟计算,分析了β-Si3N4：C的电子结构和光学性质．对C掺杂前后电子结构的异同以及价键的一些性质进行了对比分析发现,由于C的掺杂,价带宽度展宽,导带宽度和禁带宽度均变窄;态密度出现了几个新的峰,平均峰值有所减小．通过对比分析光吸收系数发现,相对于β—Si3N4的光吸收系数,β-Si3N4：C的吸收系数有所降低,并且向长波方向移动,100nm处的吸收峰向长波方向移动约11．8nm．     

DyCl3在DMF中无限稀释摩尔电导率的测定

在293~313K温度范围内测定了DyCl3在DMF溶剂中的电导率,求得DyCl3的摩尔电导率值,应用Kohlraush经验规则,使用Origin软件进行线性拟合,作图外推求得DyCl3在DMF中的无限稀释摩尔电导率值,讨论了DyCl3在DMF中的无限稀释摩尔电导率与温度的关系.