A Cognitive Psychological Study on the Acquisition of Chinese Word’s Coloring Meaning--Chinese as a Second Language

Lexical meaning mainly includes rational meaning,grammatical meaning,and coloring meaning.Mastering the coloring meaning of vocabulary is of great significance for foreign students to use Chinese vocabulary correctly.This study mainly examines the psychological mechanism of Chinese second language learners mastering the coloring meaning of words,examines the psychological characteristics of students mastering the color meaning of words from the perspectives of second language learning theory and cognitive theory,establishes a cognitive schema for coloring meaning learning,and proposes corresponding learning models and teaching strategies.

Kaleidoscope in Jazz Age： On Symbolic Meanings of Colors in The Great Gatsby

F. S. Fitzgerald is one of the greatest American novelists and his work, The Great Gatsby is the paradigmatic writing of Jazz Age. In the fiction, the symbolic representation of colors is more strikingly exhibited, which is part and parcel of the total artistic achievement of this masterpiece. This essay intends to explore the symbolic meanings of colors in the novel, suggesting that the color imagery contributes to reproducing the kaleidoscope in the magnificent social life of Jazz Age and implies the inevitable disillusionment of the protagonist＇s American dream that is defined as his pursuit of romantic love with Daisy, further intertwined with the search for a personal grail.

一种有意义分享且无像素扩展的彩色(2,2)视觉密码方案

多像素加密视觉密码(multi-pixel encryption visual cryptography,MEVC)将多个秘密像素作为基本块,并将秘密块映射到分享图像的包含相同像素数的块中,以解决传统视觉密码方案中的像素扩展。现有的多像素加密方案往往伴有生成的分享是无意义的类噪声图像的问题,分享图像伪装性差,在存储与传输过程中易于被攻击者识别。同时,已有的有意义分享的多像素加密方案中存在无彩色图像、算法扩展性差、恢复图像受掩盖图像干扰等诸多问题。据此,本文提出一种有意义分享且无像素扩展的彩色(2,2)视觉密码方案,选取相同大小的秘密图像与掩盖图像,采用多像素加密的方法,以秘密块作为单位进行加密并将加密信息嵌入到掩盖图像中,并利用半色调技术对携带秘密信息的掩盖图像作处理,最终生成有意义的分享图像,提高了多像素加密方案的安全性。实验结果表明,本方案具有彩色的秘密图像和掩盖图像、分享图像无扩展且有意义、恢复图像无掩盖图像干扰等特点,分享图像与恢复图像具有良好的视觉效果且满足安全性要求。