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Social Network Information Propagation Model Based on Individual Behavior 被引量:9
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作者 Lejun Zhang Hongjie Li +1 位作者 Chunhui Zhao xiaoying lei 《China Communications》 SCIE CSCD 2017年第7期78-92,共15页
In this paper, we discuss building an information dissemination model based on individual behavior. We analyze the individual behavior related to information dissemination and the factors that affect the sharing behav... In this paper, we discuss building an information dissemination model based on individual behavior. We analyze the individual behavior related to information dissemination and the factors that affect the sharing behavior of individuals, and we define and quantify these factors. We consider these factors as characteristic attributes and use a Bayesian classifier to classify individuals. Considering the forwarding delay characteristics of information dissemination, we present a random time generation method that simulates the delay of information dissemination. Given time and other constraints, a user might not look at all the information that his/her friends published. Therefore, this paper proposes an algorithm to predict information visibility, i.e., it estimates the probability that an individual will see the information. Based on the classification of individual behavior and combined with our random time generation and information visibility prediction method, we propose an information dissemination model based on individual behavior. The model can be used to predict the scale and speed of information propagation. We use data sets from Sina Weibo to validate and analyze the prediction methods of the individual behavior and information dissemination model based on individual behavior. A previously proposedinformation dissemination model provides the foundation for a subsequent study on the evolution of the network and social network analysis. Predicting the scale and speed of information dissemination can also be used for public opinion monitoring. 展开更多
关键词 social network information propagation individual behavior propagation delay
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表面活性剂及液体洗涤剂终极生物降解的方法与性能研究 被引量:1
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作者 洪玉倩 葛赞 +2 位作者 洪郑 雷小英 黄晴 《日用化学工业(中英文)》 CAS 北大核心 2022年第10期1094-1099,共6页
生物降解性能分为初级生物降解性能和终极生物降解性能两种,是考察表面活性剂对环境影响的重要因素。随着社会的发展,人们对环境的重视程度日益加深,而目前系统地对常用表面活性剂的终极生物降解性能研究较少。在此,采用总有机碳(TOC)... 生物降解性能分为初级生物降解性能和终极生物降解性能两种,是考察表面活性剂对环境影响的重要因素。随着社会的发展,人们对环境的重视程度日益加深,而目前系统地对常用表面活性剂的终极生物降解性能研究较少。在此,采用总有机碳(TOC)分析仪结合GB/T 21856—2008《化学品快速生物降解性二氧化碳产生试验》对10种常用表面活性剂和市场上不同品牌和类别的液体洗涤剂进行终极生物降解性能研究,考察它们对环境的影响。该方法简单易操作,重复性高。分析结果表明,几种常见的表面活性剂,降解率都在60%以上,符合环境要求。其中除LAS外,其余几种皆大于80%,终极降解性能优异。市场上一些洗涤剂产品降解率也都大于80%,终极生物降解性能优。 展开更多
关键词 总有机碳分析仪 终极生物降解 表面活性剂 洗涤剂
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