第二代小波应用于图象的无损压缩编码

1　Ｉｎｔｒｏｄｕｃｔｉｏｎ　Ｔｈｅｉｍａｇｅｌｏｓｓｌｅｓｓｃｏｍｐｒｅｓｓｉｏｎｃｏｄｉｎｇｉｓａｎｉｍｐｏｒｔａｎｔｐａｒｔｏｆｔｈｅｄｉｇｉｔａｌｉｍａｇｅｃｏｍｐｒｅｓｓｉｏｎｒｅｓｅａｒｃｈ .Ｍｅｄｉｃａｌｉｍａｇｅｓ,ｓａｔｅｌｌｉｔｅｉｍａｇｅｓａｎｄｓｅｉｓｍｉｃｄａｔａｄｅｍａｎｄｌｏｓｓ ｌｅｓｓｃｏｄｉｎｇ .Ｔｈｅｂａｓｉｃｉｄｅａｏｆｃｏｍｐｒｅｓｓｉｏｎｉｓｔｏｅｘｐｌｏｉｔｔｈｅｃｏｒｒｅｌａｔｉｏｎｓｔｒｕｃｔｕｒｅｐｒｅｓｅｎｔｅｄｉｎｍｏｓｔｒｅａｌｌｉｆｅｉｍ …     

Processing multimedia material: Does integration of text and pictures result in a single or two interconnected mental representations?

We investigated whether individuals construct either two interconnected mental representations or a single mental representation that merges information from two representations when processing multimedia materials. Individuals memorized text-picture stimuli in four different versions that differed in the specificity of information contained in either text or pictures: general pictures/general sentences, general pictures/specific sentences, specific pictures/general sentences, and specific pictures/specific sentences. Afterwards, individuals decided whether they had previously seen the specific or the general version of the sentences and the pictures. Across two experiments, individuals more frequently falsely recognized the specific sentences after having seen general sentences/specific pictures. This indicates that individuals had integrated the specific picture information with the general sentence information into a single mental representation. No such effects were observed for picture recognition. The implications of these results for multimedia learning are discussed.     

鲁迅《故事新编》的符号学阐释———兼论《补天》、《铸剑》、《理水》中色彩语词的使用

《故事新编》在书写方式上呈现出别具特色的形式关学特征,特别是《补天》、《理水》和《铸剑》三个文本对于黑、白等色彩词的运用达到了极致,它们所建构的五彩斑斓的“语象”世界充满了现代神话的意味。文章考察了《故事新编》中色彩词运用的符号学意义,以期对鲁迅的“新寓言文体”进行形式美学的解读。     

一种基于数字指纹的电子书版权保护方案

介绍数字指纹的功能和特征,分析数字指纹的编码方案及协议,提出一种用于电子书版权保护的数字指纹系统模型,并讨论如何应用该模型进行电子书版权保护。     

汉语字词声数编码方案及其配套键盘

提出了一种自动实现数据库中汉字段的快速检索方法，该方法是利用汉字的自然形态，按一定规则对汉字取特定的数与人们发音的首字母组合，构成汉字声数码，声数码是以双音节词和多音节词作为主要处理对象，更接近汉语语句的构成。其配套键盘是由不少于10个数码键和23个汉语发音的首字母键组成。     

Wavelet Adaptive Bitzerotree Coding for Video

ＷａｖｅｌｅｔＡｄａｐｔｉｖｅＢｉｔｚｅｒｏｔｒｅｅＣｏｄｉｎｇｆｏｒＶｉｄｅｏＨｅｎｇＷｅｉ（衡伟）ＦｕＹｕｑｉｎｇ（富煜清）ＷｅｉＺｈｉｈｕｉ（韦志辉）ＣｈｅｎｇＳｈｉｘｉｎｇ（程时昕）（ＤｅｐａｒｔｍｅｎｔｏｆＲａｄｉｏＥｎｇｉｎｅｅｒｉｎｇ，...     

A complexity-scalable software-based MPEG-2 video encoder

With the development of general-purpose processors (GPP) and video signal processing algorithms, it is possible to implement a software-based real-time video encoder on GPP, and its low cost and easy upgrade attract developers' interests to transfer video encoding from specialized hardware to more flexible software. In this paper, the encoding structure is set up first to support complexity scalability; then a lot of high performance algorithms are used on the key time-consuming modules in coding process; finally, at programming level, processor characteristics are considered to improve data access efficiency and processing parallelism. Other programming methods such as lookup table are adopted to reduce the computational complexity. Simulation results showed that these ideas could not only improve the global performance of video coding, but also provide great flexibility in complexity regulation.     

法官的认知过程

法官的认知过程是对审判信息加工选择的过程。它主要由注意、编码记忆、推理三个环节构成，不同环节对法官认知能力有严格要求。同时，法官的认知过程也是一个具有强烈动机色彩的归因过程并存在归因偏差。     

An adaptive joint source and channel coding scheme for H.264 video multicasting over wireless LAN

INTRODUCTION Video multicasting over wireless local area net- work (WLAN) (IEEE Standard 802.11, 1997) enables the distribution of live or pre-recorded programs to many receivers efficiently. An example application is to redistribute TV programs or location-specific in- formation in hot spots such as airport. Users can watch their favorite TV programs on mobile devices while browsing the Internet. For enterprise applica- tions, an example is multicasting video of a lecture or trainin…     

企业战略变革的实证研究方法论基础及在中国的应用

目前，我国学术界对于企业战略变革的研究大多只停留在定性的层面，这限制了本领域知识的发展与积累。拟在对国内外企业战略变革的研究方法进行总结回顾的基础上，对战略变革的实证研究方法论给出一个基础框架，并分析企业战略变革的研究在中国应该如何进行。