中文摘要：

正逐步形成的泛在媒体环境深刻影响着网络舆情的传播与控制．将传统的传染病模型推广到泛在蝶体环境这样一个开放系统中，建立了新的带直接免疫的SEIR舆情传播控制模型，新模型克服了已有网络舆情传播模型存在的对网民个体状态处理过于简单，对舆情传播媒介的处理过于简化等缺陷．证明了模型的传播平衡点及稳定性，提出了从网络舆情传播环境入手，在舆情形成初期进行干预的控制方法．据此，构建了基于Wiki技术的网络舆情传播控制平台，对该平台的舆情传播控制效能做了仿真剖析，验证了控制方法的有效性．

英文摘要：

The gradual formation of the ubiquitous media environment has a profound effect on the dissemination and control of internet public opinion. This paper presents a novel propagation model with direct immune named SEIR, and the traditional epidemic model is generalized to the ubiquitous media environment. The existing models process the netizens＇ state and treat the propagation media of public opinion in rather simple ways. The proposed novel model has overcome the defects of the existing models. The equilibrium point and stability of the model are proved, and the evolution rules are analyzed. The given control methods are starting control from the internet public opinion environment, and have early intervention in the formation of public opinion. This paper then constructs an information propagation platform with self-purification capacity applying Wiki technology. The simulations to the opinion control efficacy of the platform are accomplished, so the effectiveness of the control methods in the internet public opinion is verified.