Well developed continuous speech recognition and synthesis systems demand a high quality continuous speech database which is compact and valid, and whose scientific design would benefit from incorporating linguistic a...Well developed continuous speech recognition and synthesis systems demand a high quality continuous speech database which is compact and valid, and whose scientific design would benefit from incorporating linguistic and phonetic knowledge. It is argued that at the present stage the database should be limited to read speech. To describe those very complex variabilities in continuous speech, the following speech units are proposed: (1) 401syllables without tone; (2) 415 inter-syllabic diphones, (3) 3035 inter-syllabic triphones, (4) 781 inter-syllabic final-initial structures. The 17 basic sefltence patterns in standard Chinese are summarized to cover the most important prosodic phenomena. By using the automatic method,2393 sentences and 388 phrases are selected by above phonetic rules from a large corpus, which includes People's Daily in recent years, TV play scripts and dictionary entries, as the reading text of continuous speech recognition database in standard Chinese. This set of sentences and pbrases covers 99.8% syllables without counting tones, 100% inter-syllable diphones, 99.6% inter-syllable triphones and 100% sentence patterns.展开更多
J-TEXT, formerly TEXT-U at the University of Texas at Austin in USA, is a medium-sized tokamak at the Huazhong University of Science and Technology. The toroidal field （TF） power supply of this tokamak should provid...J-TEXT, formerly TEXT-U at the University of Texas at Austin in USA, is a medium-sized tokamak at the Huazhong University of Science and Technology. The toroidal field （TF） power supply of this tokamak should provide a current of 160 kA and a flat duration of 500 ms for the toroidal field coils to generate a maximum toroidal field of 3 T at the geometric center of the vaccum vessel. This paper presents a design of a new control system which takes the real-time feedback control option for the TF power supply operation. The system was tested successfully during the commissioning. In the first experimental campaign of J-TEXT, the system effectively controlled the power supply to provide a fiat current up to 92.5 kA and therein the TF produced reached 1.74 T, which enabled the machine to generate the first plasma successfully.展开更多
为了更好地提高在线教育的教学质量,分析在线学习行为进而优化在线教学设计有着重要意义。文章运用内容分析法对某高校193名学习者的在线学习日志进行分析,借助ROST CM 6.0进行词频和语义网络分析。分析结果表明:在线学习者较多关注学...为了更好地提高在线教育的教学质量,分析在线学习行为进而优化在线教学设计有着重要意义。文章运用内容分析法对某高校193名学习者的在线学习日志进行分析,借助ROST CM 6.0进行词频和语义网络分析。分析结果表明:在线学习者较多关注学习体验与共情感悟,学习过程的互动设计利于学习者发生群体归属感,较多学习者愿意主动利用资源进行自主学习,学习者更多关注教师的反馈与评价,适度激励有利于学习行为持续、正向发展。建议在线教学设计从创设在线学习情境、丰富在线学习资源、创设良好课堂互动、文本激励适度投放等方面入手,从而提高在线教育质量。展开更多
文摘Well developed continuous speech recognition and synthesis systems demand a high quality continuous speech database which is compact and valid, and whose scientific design would benefit from incorporating linguistic and phonetic knowledge. It is argued that at the present stage the database should be limited to read speech. To describe those very complex variabilities in continuous speech, the following speech units are proposed: (1) 401syllables without tone; (2) 415 inter-syllabic diphones, (3) 3035 inter-syllabic triphones, (4) 781 inter-syllabic final-initial structures. The 17 basic sefltence patterns in standard Chinese are summarized to cover the most important prosodic phenomena. By using the automatic method,2393 sentences and 388 phrases are selected by above phonetic rules from a large corpus, which includes People's Daily in recent years, TV play scripts and dictionary entries, as the reading text of continuous speech recognition database in standard Chinese. This set of sentences and pbrases covers 99.8% syllables without counting tones, 100% inter-syllable diphones, 99.6% inter-syllable triphones and 100% sentence patterns.
基金National Basic Research Program of China(973 Program)(No.2008CB717805)
文摘J-TEXT, formerly TEXT-U at the University of Texas at Austin in USA, is a medium-sized tokamak at the Huazhong University of Science and Technology. The toroidal field （TF） power supply of this tokamak should provide a current of 160 kA and a flat duration of 500 ms for the toroidal field coils to generate a maximum toroidal field of 3 T at the geometric center of the vaccum vessel. This paper presents a design of a new control system which takes the real-time feedback control option for the TF power supply operation. The system was tested successfully during the commissioning. In the first experimental campaign of J-TEXT, the system effectively controlled the power supply to provide a fiat current up to 92.5 kA and therein the TF produced reached 1.74 T, which enabled the machine to generate the first plasma successfully.
文摘为提升客户对产品的认可度,针对传统概念设计阶段未充分考虑客户感性需求偏好及客户感性需求获取困难的问题,提出一种在线评论数据驱动的客户感性需求识别及向设计特征映射方法。首先,基于形态学分析法,通过构建能量材料信号(Energy Material Signal, EMS)模型试图从产品中发现所有设计特征,并基于在线评论数据从所有设计特征中筛选出用户关注的核心特征;其次,从在线评论数据中提取形容词组成感性词对,以感性词作为中心词并利用词向量技术获得非中心词,基于情感词典,利用所给方法计算产品感性词对的感性评价值;然后,基于数量化理论Ⅰ(Quantitative TheoryⅠ,QTⅠ)建立客户感性评价与产品设计元素之间的映射模型,并为改进产品设计提供依据;最后,通过实例验证所提方法的可行性和有效性。
文摘为了更好地提高在线教育的教学质量,分析在线学习行为进而优化在线教学设计有着重要意义。文章运用内容分析法对某高校193名学习者的在线学习日志进行分析,借助ROST CM 6.0进行词频和语义网络分析。分析结果表明:在线学习者较多关注学习体验与共情感悟,学习过程的互动设计利于学习者发生群体归属感,较多学习者愿意主动利用资源进行自主学习,学习者更多关注教师的反馈与评价,适度激励有利于学习行为持续、正向发展。建议在线教学设计从创设在线学习情境、丰富在线学习资源、创设良好课堂互动、文本激励适度投放等方面入手,从而提高在线教育质量。
