Design and Implementation of Rail Transit Operation Information Management System

信息技术的飞速发展，为城市轨道交通实现信息化提供了有力的手段，同时也对轨道交通的建设工作提出了更高的要求。运营信息系统是依托多媒体技术，以计算机系统为核心，大屏幕显示终端为媒介向乘客提供信息服务的系统；是实现以人为本、进一步提高为乘客服务质量、加快各种信息传递的重要设施。系统功能定位为主播运营、安防反恐信息，适当插播公益广告、天气预报、新闻、交通信息，在紧急情况下运营紧急救灾信息优先使用。 本课题在充分研究和分析国内各城市轨道交通运营信息系统的基础上，利用计算机网络技术，并结合轨道交通的需求，提出了城市轨道交通运营信息系统的设计与实现方案，向乘客提供统一、准确、及时地信息，以解决轨道交通各线...With the rapid development of information technology, urban rail transit to achieve information provides a powerful means of. The rail transit construction work put forward higher requirements, operation information system is relying on multimedia technology, computer system as the core, large screen display terminals for the media to provide information services to passengers systems. The purpose...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X201323120

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies