考虑媒介与危机类型双因素作用的用户信息需求波动机理及优化研究

应急信息需求适度描述、度量和控制，对应急信息管理不可或缺，也是应急管理前提和条件。重大突发公共事件本身对用户信息需求与信息行为的影响，已得到学者肯定，不同危机类型情景下媒体信息供给在用户信息需求信号传导中所起的作用尚需规范研究。本项目拟基于“结构主义二元对立”分析理念，及情景危机传播理论、媒体议程设置理论、信息需求理论、流行病学理论等，构建考虑媒介与危机类型双因素影响的信息需求波动理论分析框架，考察媒体议程设置特征与信息需求非线性波动特征，揭示不同危机情境下媒介信息供给对用户信息需求的作用机理，并检验不同媒体报道情绪对用户信息需求的非对称螺旋效应，减缓媒体不当信息供给可能带来的无法预估的潜在次生危害，提出规范重大突发公共事件媒体报道的政策建议以及用户信息需求波动减缓实现路径。研究将为解决应急信息需求驱动性、起伏性共现问题，提供新的思路；为应急信息需求涌现，如何作用于应急治理，提供新的解释。

Proper description, measurement and control of emergency information Needs is indispensable to emergency information management, and also the premise and condition of emergency management. The impact of major public emergencies on information needs and information behavior has been affirmed by scholars, while the role of media information supply in information demand signal transmission needs to be studied in different crisis situations. This project is based on the theory of "structuralism binary oppositions" , invitational crisis communication theory, media agenda setting theory, information need theory, epidemiology theory, etc. to construct the theoretical analysis framework of information need fluctuation considering the both influences of media and crisis type. The characteristics of media agenda setting and information need nonlinear fluctuation are investigated To reveal the mechanism of media information supply on users' information needs in different crisis situations, and to test the asymmetric spiral effect of different media reporting emotions on users' information needs. This project will put forward some suggestions on how to regulate the media reports of major public emergencies and how to reduce the fluctuation of users 'information needs. The study provides a new idea for solving the problem of Driving characteristic and fluctuation co-occurrence of emergent information need, and a new explanation for how the emergent information need affects emergency governance.