10 research outputs found

    General Management System for an Intelligent Residential District

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    当前安防报警系统存在误报多、抗干扰能力弱、功能单一的问题,极大限制了报警系统的推广和使用,因此,构建完善、鲁棒、智能的报警系统具有重要的现实意义。 本文探讨了一种智能型小区综合管理系统的设计与实现。通过采用TCP/IP的构架方式,实现全数字可视对讲系统、网络视频监控系统及综合管理系统有线互联,通过采用协议对接或协议共享的方式,实现停车场出入口管理系统、梯控管理等系统功能无缝链接,实现报警系统的整体联动及共享数据。运用IPv6网络技术的可扩展性以及伸缩性,将主从式微机通信运用于当前的报警系统,实现周界报警的功能。 系统主要包括周界报警、视频监控、可视对讲、背景音乐、智能家居、楼宇控制、出入口...Nowadays, the problems of security alarm systems, such as high rate of false alarm, weak anti-interference and single function,have a negative impact on security alarm systems to be applied and popularized. Therefore,to build a complete,robust and intelligent security alarm system is of practical significance to some extent. This dissertationaims atapractical general management system for aintell...学位:工程硕士院系专业:软件学院_软件工程学号:X201323208

    厦门西海域沉积物中碱性磷酸酶活力的分布、动态及其与各形态磷的关系

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    本文首次对厦门西海域表层沉积物中碱性磷酸酶活力的分布、动态进行了检测和分析,并在同步检测该沉积物各种形态磷含量的基础上对该酶与各形态磷的关系进行了探讨.结果表明,厦门西海域表层沉积物中碱性磷酸酶的活力分布与陆源排污对水体的污染有明显的相关性;酶活力与总磷、总无机磷含量相关性较大,与弱吸附可交换磷相关性不大,与总有机磷含量则呈显著不相关性.并认为,就厦门西海域而言,碱性磷酸酶活力的水平可作为小区域水体富营养化程度的重要参考指标之一.国家自然科学基金;福建省自然科学基

    陕西蓝田地区三趾马化石新材料

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    刘东生等60多年前描述的在陕西蓝田灞河组下部的Hipparion sp.,材料较少,但形态特殊,此后一直未见相关报道。近年来在这一地区又发现了类似三趾马化石的新材料。新发现的Hipparion sp.个体小,原尖短、圆,次尖明显偏向舌侧,次尖颈收缩,DP4的次尖几乎完全孤立;原小尖褶长大复杂,次附尖粗大、分叉,向外伸出;端附尖长大,根部收缩,内侧收缩沟内伸,并呈复杂的褶沟。这些组合特征与包括Hipparion chiai在内的灞河组上部3种三趾马扁长的原尖截然不同,也区别于九老坡的Hipparion plocodus(Hipparion fossatum),而接近于大庙沟的Hipparion sp.。新材料的发现表明灞河早期的这种形态比较特殊的三趾马可能延续到了灞河晚期,甚至更晚的时代,同时在白鹿塬西侧蓝田汤峪河道一带有新近系地层出露。</p

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

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    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 pνˉK+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 pνˉK+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 9.6×10339.6 \times 10^{33} years, competitive with the current best limits on the proton lifetime in this channel

    JUNO sensitivity on proton decay pνK+p → νK^{+} searches

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

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    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 pνˉK+ 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 pνˉK+ p\to \bar{\nu} K^+ is 36.9% ± 4.9% with a background level of 0.2±0.05(syst)±0.2\pm 0.05({\rm syst})\pm 0.2(stat) 0.2({\rm stat}) events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is 9.6×1033 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
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