Prosody in the reading of children with specific language impairment / La prosodia en la lectura de niños con trastorno específico del lenguaje

Expressive reading is considered one of the subprocesses involved in reading fluency, and good readers show greater changes in tone and fewer unnecessary pauses than bad ones. Given the high frequency of reading difficulties in specific language impairment (SLI), there may be certain differences in the use of prosody among children with SLI. The purpose of this study was to research whether prosody in the reading of children with Spanish SLI differs from that in the reading of typical readers. To do so, 44 children (SLI and control) read aloud a text which contained declarative, interrogative and exclamatory sentences. Different prosodic parameters referring to length, tone and intensity were measured. The results showed that the children with SLI read slower, commit more errors and make more inappropriate pauses. Furthermore, fewer pitch variations were found in the interrogative sentence and in the final features of the sentence. These results confirm the relationship between decoding and prosody; therefore, interventions with these children should bear in mind the practice of expressive reading while learning reading fluency.     

Dielectric Properties of ZnTiO3 Microwave Ceramics Consolidated with MgTiO3

STABILIZED ZNTIO, WAS PREPARED BY DOPING MAGNESIUM OXIDE THROUGH TRADITIONAL SOLID-STATE REACTION. THE EXPERIMENTAL RESULTS INDICATE THAT ZINC TITANATE CRYSTALS DOPED WITH MAGNESIUM OXIDE GROW WELL AND THE DECOMPOSITION INTO ZN2TIO4 AND TIO2 IS RESTRAINED THROUGH TRADITIONAL SOLID STATE REACTION. BY ADJUSTING MOLAR RATIO OF MGO, BETTER PROPERTIES CAN BE OBTAINED. THE DIELECTRIC PROPERTIES OF THE CERAMICS DOPED WITH 30% MGO( MOLAR PERCENTAGE) SINTERED AT 1 060 ℃ ARE AS FOLLOWS:THE VALUE OF QUALITY FACTOR IS GREATER THAN 20 000(6. 5 GHZ), THE TEMPERATURE COEFFICIENT OF RESONANCE FREQUENCY IS ABOUT 2 × 10-6/℃, THE DIELECTRIC CONSTANT RANGES FROM 18 TO 22. BESIDES, IT IS PROVED THAT HEAT TREATMENT CAN OPTIMIZE MICROSTRUCTURE AND THE VALUE OF QUALITY FACTOR, WHICH INCREASES FROM 23 833.93 TO 47 584.00 AFTER 2 H OF HEAT TREATMENT AT 1 040 ℃.     

“粉笔是物质”命题辨析

生活实践和哲学理论都表明 :“粉笔是物质”这种命题是成立的。马克思主义哲学认为 ,任何事物都是个别和一般的对立统一 ,人的认识中的个别和一般的关系乃是客观事物中的个别和一般的关系之反映。个别和一般的关系在客观事物中表现为 :现象和本质的关系 ;个体和类的关系。反映在人的认识中则相应地表现为 :感性认识和理性认识的关系 ;个别概念和一般概念的关系。人们习惯地把这些关系看作是现实具体与思维抽象的关系。要坚持个别和一般关系的辩证观点 ,就必须批判经验论和唯理论     

B3SF-560型减速机热功率分析计算

简述了金川集团公司大型皮带驱动站B3SF-560型减速机的发热过程和散热过程,根据其实际的散热能力计算出了该减速机的额定热功率。在分析影响减速机热功率相关因素的基础上,从减速机设计、润滑及冷却等方面提出了多种提高减速机热功率的改进措施。     

激发情趣同形同构——谈创造良好语文课堂氛围的方法

良好的课堂氛围能使学生精神振奋、思维活跃，容易触发联想，在知识上形成新的联系。学生、教师和作者情感相通，思路一致，便能达到“同形同构”的最佳境界。从创造特定情境、发掘美感因素等教学目标出发，我们应强化教学的方法观念，积极引导学生“入境”、“入趣”和“入戏”，从而创造出良好的课堂氛围。     

"趋同论"辨析

文章认为:全面、历史和辨证的分析社会制度的两个层面是正确认识当前民主社会主义趋同论思潮的基础.资本主义和社会主义作为本质层次上的两种社会形态不可能趋同,社会主义必然取代资本主义.社会主义与资本主义国家借鉴学习具体机制体制进行经济体制改革是社会化大生产、商品经济发展和经济全球化的结果,但这不会改变社会主义和资本主义制度的本质.     

经典一维非谐振子系统的热容量

讨论了非简谐振动对经典一维振子系统内能和热容量的影响，得到该影响的一级修正表达式．并以氢分子系统为例，利用Morse势能函数进行具体讨论．结果表明，对于一维非谐振子系统，在讨论系统的内能、熵、热容量等一些与温度有关的热力学性质的问题时，若涉及的温度较低，这时可近似地用简谐理论处理；若温度较高，则应考虑非简谐效应．     

固体激光器温度控制系统的硬件设计

介绍了一种固体激光器温度控制系统的硬件结构与原理,它可以很好地实现固体激光器的温度测量、显示、超限报警与控制等功能。     

关于《燃烧热的测定》实验中热平衡计算式的商榷

本文证明用外壳等温式弹式量热计测定物质燃烧热时，在许多教材中长期使用的基本公式中存在错误，并对正确计算公式提出了见解．     

三相异步电动机实验的改进

通过对三相异步电动机正反运转的控制电路的改进，可以避免电动机因数相和过载而烧坏电动机的现象。