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基于Websocket协议的车联网隐蔽信道构建
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作者 赵辉 彭建友 +1 位作者 秦玉林 韩利利 《计算机科学》 CSCD 北大核心 2024年第8期364-370,共7页
针对传统车联网协议下的隐蔽信道构建方式单一、无法适用于复杂网络环境的问题,通过分析轻量级物联网应用层协议Websocket的数据帧格式和通信机制,提出了一种基于Websocket协议的车联网隐蔽信道构建方法。该方法利用信息分离聚合算法将... 针对传统车联网协议下的隐蔽信道构建方式单一、无法适用于复杂网络环境的问题,通过分析轻量级物联网应用层协议Websocket的数据帧格式和通信机制,提出了一种基于Websocket协议的车联网隐蔽信道构建方法。该方法利用信息分离聚合算法将待发送的隐蔽信息进行多维传输,以提升隐蔽信道的传输速率和抗暴露性。同时,考虑到车联网网络的动态拓扑特性,基于跳频技术自适应变换信息分离聚合方式和编码映射表。为了提高信道的隐蔽性,通过最小二乘算法模拟了正常网络流量的传输特性。仿真实验结果表明,所构建的隐蔽信道在面对较差的网络环境时,受到的网络波动影响较小,具有较好的鲁棒性;并且相较于单一维度传输的隐蔽信道,在隐蔽性和传输速率方面有一定的提升。 展开更多
关键词 车联网 Websocket 信息分离聚合 跳频技术 最小二乘
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Isolation of Main Genes Involved in Flowering of Saffron (Crocus sativus L.) in Order to Study Effective Flowering Protein
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作者 Iman Yousefi Javan Yousef Hosseinzadehgonabad 《Journal of Food Science and Engineering》 2017年第8期396-399,共4页
Saffron (Crocus sativus L.) always is grown for using its flowers in nutrient industry, color industry and healthy compounds due to its flowers and specially stigmas. Because of its expensive flowers, surveying and ... Saffron (Crocus sativus L.) always is grown for using its flowers in nutrient industry, color industry and healthy compounds due to its flowers and specially stigmas. Because of its expensive flowers, surveying and recognizing on effective genes for flowering is very important and its results can help us to control rate and timing of flowering at an early stage of flowering. The gene and gene state meant Pistillata like MADS box (PIC2) were surveyed for recognizing its molecular mechanism. The molecular sequence at the genes has high similarity to members of family MADS that is a factor for controls of protein at flowering stage. PIC2 gene was studied by bioinforrnatics resources. Primers were designed for replicating the gene and DNA and RNA were extracted from saffron's leaves. The gene's eDNA was built by recopying enzyme and used such a pattern for replicating gene PIC2 at polymerase chain reactions (PCR). Segments were replicated such 900 eDNA pair-nucleotides and a segment such 2,100 of DNA's pair-nucleotides. The gene codes a protein that was composed of 210 amino acids that has MADS sequence box. Analysis of protein's molecular structure and homological modeling of the protein indicated that it has a regular structure. 展开更多
关键词 SAFFRON PIC2 gene MADS sequence box gene state homological modeling.
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