Abstract:This paper introduces the development and application of mine ventilation management information system( MVIS ) and describes the system structure , main functions and technical features of the system.Through examples this paper expounds the application of MVIS in ventilation network calculating , ventilation system simulation , ventilation system decision-making.And MVIS not only be used for the ventilation system optimization , but also solved a series of related ventilation problems using its practical function , and provided technical support for related studies.

Abstract:MOOC ( Massively Open Online Course ) provides students a new channel to acquire knowledge and a new pattern to learn .It becomes popular learning method in internet times and brings big impact to college education .This paper introduces the development of MOOC and presents MOOC history and characters of the most major MOOC organizations-Coursera , Udacity and EdX .The paper also summaries the development of MOOC in China and the opportunity and challenge to traditional education , and also gives some suggestion to colleges on opening online courses .

Abstract:Based on the experiment of T ’ 2 s NMRE on the twenty-seven coal samples collected from TangS-han Mine , ZhaoGeZhuang Mine , WangFengGang Mine , the spectrum of T ’ 2 s NMRE was analyzed in this study .Moreover , the development and connectivity of hole and crack in three coal mines were obtained .This research can provide a new method to the study of hole and crack and how to keep and utilize the coal -bed methane.