干旱区生态环境敏感参量遥感反演与评价系统研究/Eco-environmental Variables Estimation from Remotely Sensed Data and Eco-environmental Assessment： Models and System[J]

针对传统观测手段难以满足大范围快速生态环境变化监测需要的问题，在分析干旱区地表覆盖类型与气候特点，以及干旱区生态环境监测与评价的具体需求基础上，运用遥感技术反演生态环境敏感参量并根据相应的需求建立了基于这些参量的评价模型。在Microsoft．NET平台上，利用ArcEngine组件实现了遥感影像数据的可视化与空间分析功能；利用IDL（interactive data language）开发的遥感反演算法，实现了生态环境敏感参量的遥感提取，最终开发集成了干旱区生态环境敏感参量遥感反演与评价模型系统。通过将该系统在新疆石河子地区进行应用，对系统功能进行了测试。结果表明，本系统能够比较稳定地运行，比较方便和准确地通过遥感手段获取关键生态环境参量，为干旱区生态环境保护和监测提供了技术支持，也将促进空间信息技术在干旱区生态环境监测中的综合应用

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