Extraction of novel features for emotion recognition

Hilbert-Huang transform method has been widely utilized from its inception because of the superiority in varieties of areas. The Hilbert spectrum thus obtained is able to reflect the distribution of the signal energy in a number of scales accurately. In this paper, a novel feature called ECC is proposed via feature extraction of the Hilbert energy spectrum which describes the distribution of the instantaneous energy. The experimental results conspicuously demonstrate that ECC outperforms the traditional short-term average energy. Combination of the ECC with mel frequency cepstral coefficients (MFCC) delineates the distribution of energy in the time domain and frequency domain, and the features of this group achieve a better recognition effect compared with the feature combination of the short-term average energy, pitch and MFCC. Afterwards, further improvements of ECC are developed. TECC is gained by combining ECC with the teager energy operator, and EFCC is obtained by introducing the instantaneous frequency to the energy. In the experiments, seven status of emotion are selected to be recognized and the highest recognition rate 83.57% is achieved within the classification accuracy of boredom reaching 100%. The numerical results indicate that the proposed features ECC, TECC and EFCC can improve the performance of speech emotion recognition substantially.     

谈谈数学思想在程序设计上的应用

在程序设计中,常常会用到数学上的很多思想。本文以C语言程序设计为例,进一步阐述数学思想在程序设计上的应用。     

基于教学改革模式下的教材研发与编制——以高职《Pro/ENGINEER三维造型设计实例精解》教材为例

在现阶段的教学改革模式下,合适的高职计算机辅助设计软件Pro/ENGINEER教材是提高教学质量的重要条件。为此,编写该课程新教材的宗旨是：使用简单的命令,实现复杂的造型。通过采用合理的结构、选择适合的内容、采用实例等方法来实现这一目标。     

非师范专业《现代教育技术》通识选修课教学设计与开发探究

教学设计是开发课程和指导教学活动实施的一种系统方法。运用ADDIE模型,融合多种学习理论,对非师范专业《现代教育技术》通识选修课进行系统的教学设计与开发研究,采用主题式教学内容和团队式教学模式,设计与教学目标和内容相匹配的教学方法和教学手段。经过三年的教学实践与评估优化,课程的教学体系日臻完善,其教学质量和教学效果被广大学生认可。     

民俗旅游中传统文化的“真实性”探讨——以桃坪羌寨“花儿纳吉”赛歌节为例

旅游的“真实性”分为客观性真实、建构性真实和存在性真实．旅游地主流文化与边缘文化、强势文化与弱势文化之间的碰撞,使得文化差异性减少、趋同性增加,从而导致民俗旅游中“真实性”的缺失．以桃坪羌寨“花儿纳吉”赛歌节为例,通过与传统的“花儿纳吉”对比,探讨了民俗旅游对传统文化“真实性”的影响,意在揭示保护传统文化“真实性”的重要意义．     

抗战文学功能的美学思考

文学在抗战时期顺应历史潮流,宣传抗战促使抗战达到全面动员;这同时也促使了文学与当时的社会现实全面而整体的结合,走向现实主义,实现了抗战文学建国与建立新文艺的双重目标。由此,文学与抗战的结合充分显示了文学在抗战时期的作用和功能,展示了文学在特殊历史时期的特殊作用,同时,也为文学开拓了一个崭新的审美表现空间,使文学呈现出不同的文化特征和审美追求。     

Simple Preparation of Spherical Activated Carbon with Mesoporous Structure from Phenolic Resol and Associated Catalytic Performance in Isobutane Dehydrogenation

This study provides a detailed report on the synthesis of spherical activated carbon with mesoporous structure using a soluble low molecular weight phenolic resol precursor through an ammonium alginate assisted sol–gel method. The effects of calcinating temperature and the addition of CaCO_3 as a pore-enlarging agent on texture structure and catalytic performance in isobutane dehydrogenation to isobutene were investigated. Characterization of N_2 sorption,mechanical strength tests,and optical photographs confirmed that the obtained carbon materials had high mechanical strength,a good degree of sphericity,and a large surface area. Introducing CaCO_3 as a pore-enlarging agent during the preparation process promoted the formation of a mesoporous structure of carbon spheres and evidently increased the surface area and oxygen content,which can improve isobutane conversion and isobutene selectivity of these carbon spheres. The conversion of isobutane reached up to 28% for this spherical activated carbon,and the selectivity of isobutene reached up to 96%. Isobutane conversion increased with an increase in calcination temperature due to an increase in the oxygen content,whereas the selectivity of isobutene decreased due to the slight decrease in the specific surface area.     

《离骚》与《九章》是否为同一个时期的作品——《离骚》研究系列之四

探讨《离骚》与《九章》是否为同一时期的作品,旨在论证《离骚》的创作年代与历史背景,然这在汉代人的载论中是难以解决和论定的,故须从这两部作品的叙事内容的对比研究入手,加以论证其为同一时期的作品,方能从根本上而且极具说服力解决《离骚》的创作年代与历史背景的问题。当前,争论似乎不大,但敢于公然这样论说的学者并不多,这就是撰写此文的意义所在。     

从称谓语翻译看中西方文化的差异

称谓语是民族文化的反映,而语言是文化的载体。通过分析英汉称谓的特征,从文化差异和语篇意义对等来分析英汉称谓的异同,并使之运用于社会交往和翻译活动中,以期更好地促进中西方文化的交流和跨文化交际。     

DSP视频处理系统的数据传输优化设计

针对视频图像处理系统数据传输的瓶颈问题进行分析,提出了Ping-Pong双缓冲与数据拼接的优化解决方案,并在数据传输过程中实现了视频数据格式的巧妙转换。实验结果表明,此方法可行且有效,对提高DSP微光视频处理系统的速度具有现实意义。