Effects of articulation training on the production of trained and untrained phonemes in conversations and formal tests

The aim of this study was to investigate the effectiveness of articulation training for specific phonemes on the production of phonemes in conversational language samples, the 108 Single Word Articulation Test (Paatsch, 1997), and the Phonetic Level Evaluation (Ling, 1976). Speech production skills of 12 hearing-impaired children were assessed using these evaluation tools pre- and posttraining. A total of six phonemes were selected for each child to be trained during 15-to 20-minute daily sessions throughout an 8-week speech production program. Three phonemes, with a particularly high error rate, were trained at a phonetic level (category 1) while three phonemes, with an intermediate error rate of 40% to 70%, were trained at a phonological level (category 2). Results showed improvements in the percentage of correctly articulated category 1 phonemes and category 2 phonemes. The improvements for category 2 phonemes were larger than for category 1 phonemes for all test materials. It may be that phonological level training is more effective than phonetic level training or that phonemes with an intermediate error rate are easier to train than phonemes with a high error rate. Untrained vowels and consonants also improved slightly after training. Phonological process analysis showed that many of the errors apparent in the trained phonemes also had occurred in the untrained phonemes. This may have resulted in the generalization and carryover of taught speech skills into other aspects of the child's spoken language.     

关于Diophanitine方程x!-D=yn

设D是正整数,n是大于1的正整数.本文证明了当D是无平方因子正整数时,方程x!-D=y     

Fermat数的无平方因子部分

对于正整数m，设Fm=2^2^m＋1是第m个Femat数，Q（Fm）是Fm的无平方因子部分．本文证明了：Q（Fm）〉2^4m-6／m^2．     

西方马克思主义视域中的教育与国家关系——罗杰·戴尔的教育意识形态国家机器论

西方马克思主义是当代西方学者研究教育与国家关系的重要理论视域和知识资源。英国著名西方马克思主义教育学者罗杰.戴尔在教育与国家关系研究方面卓有建树。他立足西方马克思主义视角,借用阿尔都塞的意识形态国家机器理论,遵循葛兰西反经济主义的政治实践观的认识路径,系统地阐明了教育与国家发展之间的关系。     

关于Diophantine方程x3±23m=3Dy2

设m是正整数,D是无平方因子正整数.本文证明了:当m>1时,如果D不能被3或6k 1之形素数整除,则方程x3±23m=3Dy2没有适合gcd(x,y)=1的正整数解(x,y).     

是颠覆还是超越?——对布莱克《飞蝇》之还原性解读

基于后现代主义的解构批评和互文性理论,以诗作《飞蝇》作为解构的语义场,对全诗在空间和时间上与其他文本的相互指涉,自我关照性和哲学思辨的特点进行系统分析,深入体察该诗的后现代元素,并力图超越后现代精神,在多元的意义系统中重构一种价值体系——对自由的不懈追求,以确立作品在世界文学大厦中不可湮没的辐射性力量。     

方程δ(xm)=yn的素数解

对于正整数a,设δ(a)是a的约数和,本文讨论了方程δ(xm)=yn的素数解.     

方程xy+yx=z2的奇数解

证明了:如果(x ,y, z)是方程xy yx=z2的一组适合 min(x , y )》1,gcd(x , y)=1且x y为奇数的正整数解,则x和y都不是平方数.     

指数Diophantine方程（x^m-1）／（x-1）=y^n的偶数解

证明了方程：（x^m-1）／（x-1）=y^n，x〉1，y〉1，m〉2，n〉1仅有正整数解（x，y，m，n）=（7，20，4，2）可使m是偶数．     

中学生ABO血型与学习成绩相关性的初步研究

应用医学统计学方法，从生物医学的角度对中学生ABO血型与学习成绩的关系进行了初步研究，研究结果表明各血型组学生之间学习成绩没有显著性差异。