Skeleton Trees for the Efficient Decoding of Huffman Encoded Texts

A new data structure is investigated, which allows fast decoding of texts encoded by canonical Huffman codes. The storage requirements are much lower than for conventional Huffman trees, O(log² n) for trees of depth O(log n), and decoding is faster, because a part of the bit-comparisons necessary for the decoding may be saved. Empirical results on large real-life distributions show a reduction of up to 50% and more in the number of bit operations. The basic idea is then generalized, yielding further savings.     

基于信念网络的多维并行级联码的串行译码方法

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基于空间策略网格的符号级联合信源信道编译码快速算法

提出一种基于空间策略网格图的符号级联合信源信道编译码快速算法。构建联合译码的平面网格图,可以实现比比特级译码更好的译码性能。然而平面网格图结构复杂,使得符号级联合信源信道译码过程复杂度高。提出一种新的高效空间策略网格,通过满足限制条件方程对可变长符号的权重值进行优化,结合可变长符号后验概率译码,形成一个整体快速编译码算法。两项仿真实验的结果表明,相比平面网格图,该方法减少译码复杂度近50%,并使系统在相同功率信噪比条件下传输的比特错误率更低。这种方法可以很好地保护可变长编码后的信息数据,适用于资源受限的环境中的符号级联合信源信道编译码。     

基于部分响应和SCMA的联合检测与译码算法

稀疏码分多址（SCMA）是一种新型非正交多址技术,具有过载通信的特点。在高信噪比（E_b/N₀）场景下基于消息传递（MPA）的译码算法,误比特率性能不理想。因此,提出一种部分响应与稀疏码分多址联合调制译码模型,方案继承了SCMA在译码端的低复杂性和部分响应的高容错性。为进一步降低联合译码的误比特率,将部分响应的Viterbi译码级联至MPA迭代译码过程中,即每次迭代过程中变量节点都会进行一次Viterbi译码,从而组成新型联合译码模块。仿真结果表明,改进后联合编译码模型能够有效降低系统对E_b/N₀的需求,同时保持较低的误比特率。     

跨文化交流过程中译者误译原因分析

分析了译者在跨文化语言交际中所扮演的特殊角色,以及译者的误译对跨文化交际造成的负面影响,认为这种现象是由于译者因文化差异、语言特点等原因对源讯息做出误译所造成的,提出了减少这些负面影响的措施。     

浅析植入式广告的生存状况

文章讨论植入式广告的生存状况,整体分两部分即植入式广告的生存的土壤与其发展面临的问题。揭示广告采用新形式在特定的传播环境中自身的适应与调节能力,及其与营销策略的契合与对受众注意力产生的影响。     

中国影视作品中方言的符号学解读

近年来,影视作品中采用方言的现象越来越多。试从符号学的角度探索隐藏在影视剧方言背后的涵义。根据信息交流传递中的编码解码模型得出：影视剧创作者通过影视中的方言向观众传达某种信息,观众在观看过程中解读这些信息,最终与观众在心理上达成共识,实现影视作品真正的价值。     

斯图亚特·霍尔传播理论视角下新闻媒介娱乐化研究

新闻媒介娱乐化是当前新闻界中出现的一种不良现象。其深层原因是经济体制转变过程中出现的经济利益最大化追求的表现。借助英国文化研究之父斯图亚特·霍尔的传播理论,从信息传播的机制来分析新闻娱乐化出现的原因。特别是探求统治阶级以意识形态进行的编码和接受大众个体的多向解码过程。同时指出利用新闻媒介的舆论干预是实现权力（Power）到权利（mght）的转变,能从媒介本体角度克服新闻媒介娱乐化倾向。     

新型的近仙农理论极限码:之型码和级联之型码

This paper introduces a family of error-correcting codes called zigzag codes.A zigzag code is described by a highly structured zigzag graph.Due to the structureal properties of the graph,very low-complexity soft-in,soft-out decoding rules can be implemented.we present a decoding rule,absed on the Max-Log-APP(MLA) formulation,which requires a total of only 20 addition-equivalent-operations per information bit per iteration.Simulation of a rate-1/2 concatenated zigzag code with four constitutent encoders with interlezer length 65536 yields a bit error rate(BER) and of 10^-5 at 0.9 dB and 1.4dB away from the Shannon limit by optimal (APP) and low-cost sub-optimal(MLA) decoders,respectively.     

The effectiveness of synthetic phonics in the development of early reading skills among struggling young ESL readers

A quasi-experimental research design was used to investigate the effectiveness of synthetic phonics in the development of early reading skills among struggling young English as a second language (ESL) readers in a rural school. The pretest and posttest, adapted from the Phonological Awareness Literacy Screening (PALS) for Preschool Students and Grades 1 to 3 tests, assessed children’s early reading skills. A semi-structured interview was used to gather information. The findings indicated that the performance of students in the experimental group in decoding was significantly higher in the posttest, where t(39) = 31.441, p < .00005. Likewise, in comprehension, the experimental group achieved significantly higher scores in the posttest, where t(39) = 15.322, p < .00005. There was a significant difference in the achievement between the two groups, where t(78) = 31.010, p < .00005. This indicates that synthetic phonics could be effective in developing early reading skills for struggling readers.