The development of Universal Laboratory System based on internet and the design of SONOMETER

计算机及电子技术的飞速发展，在物理实验方面出现的最大改变莫过于在实验仪器的计算机自动化上。实验仪器的计算机化更精确的对物理目标进行测量，减小人为判断误差，这是实验仪器发展的一大趋势。同时伴随着Internet网络技术的发展，通过网络来实现对仪器设备的自动控制将成为网络应用的重要领域之一，这也是实验仪器发展的更进一步趋势。网络化是计算机化的升级。 如果实验仪器进行分别的计算机化及网络化升级，将造成实验室资源的严重浪费，笔者提出开发一套支持互联网的通用的实验系统，使得能够适合较多实验仪器的计算机及网络化。而且逐步在该实验系统的基础上建立起远程虚拟实验室，推动远程教育的进一步发展。 本实验系统开...With the development of computer and electronic technology, the most transform on the physics experiment takes on the automatization of experiment instrument. It is a great current. At the same time, the technology of internet develops at high speed. The world strides from industrialization into information society. It is not only a great current that the laboratory system develops into workin...学位：理学硕士院系专业：物理与机电工程学院物理学系_凝聚态物理学号：20012401

Serial Communication Application in The Internet Universal Laboratory System (IULS)

【中文文摘】基于国际互联网的远程通用实验系统的开发将实现远程网络物理实验,解决大多数实验仪器连网、远程控制、实验数据远程自动获取,以及实验数据可视化处理等问题.本文将就该系统的开发过程中串行通信这一接口技术给予详细阐述,并给出了用Delphi 6.0 开发的软件系统的部分源代码. 【英文文摘】The IULS provides the solution to remote physical experiments, which offers the networking of most experiment instruments, remote controlling, automatically remote data capturing, and the visual processing of experiment data. The key technology of serial port communication is introduced and the source code for the software devised by Delphi 6.0 is also presented.福建省自然科学基金资助项目(A0310003

Internet communication application in internet universal laboratory system

基于国际互联网的远程通用实验系统的开发将实现远程网络物理实验,解决大多数实验设备连网、远程控制、数据串行自动采集、数据网络自动发送/接收,以及实验数据可视化处理等问题。实验数据/实验设备监控命令的Internet网络传输是该系统设计的一个难点,就为解决该难点而通过建立客户机/服务器模式Socket网络通信的方案给予了详细阐述,并给出了Delphi6.0开发的关于该部分的源代码。The IULS(internet universal laboratory system)provides the solution to remote physical experiments, which offers the network ing of most experiment instruments, remote controlling, automatically remote data capturing, and the visual processing of experiment data. The key technology of internet communication is introduced and the source code for the software devised by delphi 6.0 is also presented.福建省自然科学基金项目(A0310003)

The Development of Universal Laboratory System(ULS) Based on Internet

【中文文摘】就国际互联网远程通用实验系统的开发过程中网络通讯和串行口监控通信这两个关键技术做一详细阐述,并给出了用Delphi6.0开发的软件系统的部分源代码.该系统的开发将实现远程网络物理实验,解决大多数实验仪器连网、远程控制、实验数据远程自动获取以及实验数据可视化处理等问题. 【英文文摘】The ULS provides the solution to remote physical experiments,which offers the networking of most experiment instruments,remote controlling,automatically remote data capturing,and the visual processing of experiment data.The key technology of internet communication and serial port monitoring communication is introduced and the source code for the software devised by Delphi6.0 is also presented.福建省自然科学基金资助项目(A0310003

云南元江上游石羊江河谷绿孔雀夜宿地选择

为探索绿孔雀的夜宿地选择模式及其成因,笔者于2007年3～4月和10～11月,在云南元江上游石羊江河谷绿孔雀的分布区内,采用样线法和样方法调查了绿孔雀的夜宿地生境,测定了19个生态因子。生态因子比较结果表明,夜宿地利用样方的坡度、乔木盖度、乔木胸径、落果密度、藤本密度与对照样方存在显著差异; 夜宿地的海拔高度显著高于觅食地。判别分析结果表明,绿孔雀夜宿地和对照样地之间存在着明显的分化。逻辑斯蒂回归分析结果表明,绿孔雀选择坡度大、落果多、乔木的盖度和胸径大的地区作为夜宿地。隐蔽条件和食物等关键性生态因子的配置和可获得性决定了绿孔雀的夜宿地选择行为,而人为干扰压缩了其可利用的适宜生境,降低了生境的利用程度

Prediction of Energy Resolution in the JUNO Experiment

International audienceThis paper presents the energy resolution study in the JUNO experiment, incorporating the latest knowledge acquired during the detector construction phase. The determination of neutrino mass ordering in JUNO requires an exceptional energy resolution better than 3% at 1 MeV. To achieve this ambitious goal, significant efforts have been undertaken in the design and production of the key components of the JUNO detector. Various factors affecting the detection of inverse beta decay signals have an impact on the energy resolution, extending beyond the statistical fluctuations of the detected number of photons, such as the properties of liquid scintillator, performance of photomultiplier tubes, and the energy reconstruction algorithm. To account for these effects, a full JUNO simulation and reconstruction approach is employed. This enables the modeling of all relevant effects and the evaluation of associated inputs to accurately estimate the energy resolution. The study reveals an energy resolution of 2.95% at 1 MeV. Furthermore, the study assesses the contribution of major effects to the overall energy resolution budget. This analysis serves as a reference for interpreting future measurements of energy resolution during JUNO data taking. Moreover, it provides a guideline in comprehending the energy resolution characteristics of liquid scintillator-based detectors

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