Subdivision surface modeling system based on arbitrary topological curves network and combined subdivision

Arbitrary topological curve network has no restriction in topology structure,so it has more powerful representing ability in defining complex surfaces.A complex surface modeling system is presented based on arbitrary topological curve network and the improved combined subdivision method,its functions including creating and editing curve network,and generating and modifying curve network's interpolated surface.This modeling system can be used to the process of products'concept design,and its applications is ...     

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.     

虚拟学习社区的自组织性及形成条件

虚拟学习社区具有自发、自管、自调的特点,与自组织理论的基本内涵呈现极强的内在耦合性,如果社区中的学习者建构合理的身份认同与自我效能感、又具有一定规模的参与人数、发表的作品及跟贴达到一定数量、社区中教师具备沟通智慧与反思习惯、社区中的知识权威和意见领袖发挥影响、教育主体之间建立有效的心理契约这几方面满足了耗散结构的产生条件,虚拟学习社区就会出现自组织的特征,由无序走向有序,形成非线性复杂系统。     

20世纪后半期局部战争的特点及类型剖析

从二次世界大战结束到现在，局部战争连绵不断。局部战争制造并加剧了国际局势的紧张，威胁着世界的和平与安全，是世界不安宁的主要因素。探讨局部战争的根源和起因，剖析局部战争的特点和类型，制定正确的政策和策略，对于维护世界持久和平、保障各国人民的自由、独立和社会进步，具有重大现实意义。     

乒乓球技术的美学特征

以美学和体育美学的基本理论为基础,对乒乓球技术进行了初步的美学分析和研究.研究表明:优良的乒乓球技术遵循“对称均衡”和“多元和谐”等“一般形式美”法则,并蕴涵速度、力量、旋转、落点和弧线等乒乓球技术独有的体育美.     

从文体学的角度看翻译标准

翻译标准是翻译理论的核心，文体再现又是翻译标准的核心。对翻译标准文体理论的系统再认识，有利于再现原文的文体特征，从而明确文体学对翻译标准确立的意义。     

小学历史教学的特点及其方法

小学历史教学，必须考虑历史学科的特点和小学生的年龄、智力特点及其接受能力，采用多种形式施教，使学生在生动形象的教学中接受思想教育。     

网络聊天语篇的语体特征

网络聊天(Internet Relay Chat)是网民在网络上借助聊天软件,主要通过文字媒介进行交流的人际传播活动,是一种多人参与的,基于纯文本的,实时的交流方式。因而,它既是一种交际事件,也是一种语篇类型。它既具有口语语篇的实时互动性,又具有书面语体的单向异步性,属于“互动性的书面语篇”。这种新兴语篇类型拥有独特的语境特点,更具有鲜明的语体特征,它模糊了口语和书面语的界线,实现了口语语体和书面语语体的高度结合。     

地方特色与学报特色构建

面对全国各高校学报质量日益提高、百花争艳的局面, 地方大学学报必须利用地方特色优势, 来竖立自己学报别具一格的学术风采, 为地方经济、文化的发展服务;同时, 注重培养一支高素质的作者队伍, 并提高编辑人员的内功等, 才能在强手如林的激烈竞争中求生存求发展。     

论邓小平人力资本思想的形成及时代特征

邓小平理论中蕴含着丰富的人力资本思想,这些思想的产生,有其深刻的理论渊源和特殊的时代背景:马克思人力资本理论是其理论基础,中国改革开放和社会主义现代化建设的伟大实践是其产生的实践要求,西方人力资本理论的发展和完善与之相互策应,中华民族五千年思贤辩才的文化积淀是其历史渊源,新科技革命是其时代背景,而自身传奇的经历和超凡的素质是内在的决定因素。