Design of Electronic Tour Guide System Based on Embedded Linux

电子导游机用于替代导游，主要给游客提供景点智能讲解功能。但现有的电子导游机只能提供游客的大概位置，游客只知道自己处于哪个景点。而本论文设计的电子导游系统基于ARM开发板与Linux系统，利用GPS定位技术实现了游客位置的准确定位，能够实时显示游客的周边地图，给游客提供了指引的功能。 现有的电子导游机只相当于一个声音播放器，只能提供音频讲解功能。而本电子导游系统通过移植播放器实现了视频讲解的功能，此外还提供了图片显示与文字讲解的功能。通过丰富的讲解形式给游客带来更精彩的讲解，更愉悦的享受。 本课题开发的电子导游系统包括主窗口（主控制模块）、GPS模块、地图与位置显示模块、音视频讲解模块、图片...Electronic tour guide, whose main popurse is to provide intelligent guide to the tourists, is used to replace labor tour guides. However, with the help of electronic tour guide, a tourist can only know which sight spot he or she belongs to because the existing electronic tour guide cannot provide tourist’s accuate location. Based on ARM9 development board, embedded Linux system and GPS positioning...学位：工学硕士院系专业：物理与机电工程学院机电工程系_机械设计及理论学号：1992007115114

Design and Implementation of Simulation Module of Audio Output System for SkyEye Simulator

SkyEyE是一个指令级模拟器,用它能模拟多种嵌入式开发板,目前模拟的硬件包括CPu、内存、I/O寄存器、uArT、lCd及TOuCHSCrEEn等.详细阐述了针对S3C2440A开发板的音频输出系统的模拟模块的设计实现.此模拟模块是通过截获所有读写dMA、l3总线接口和IIS接口的信息以得到音频数据、设备控制参数数据,并用这些数据控制SkyEyE所在的宿主机的音频播放设备.此外,在每次音频数据dMA传输后,此模块还要模拟中断的产生.最后,将基于lInuX操作系统的音频播放程序在嵌入式lInuX系统上运行,验证了此模块的正确性.SkyEye is a Instruction-level simulator and can be used to simulate many embedded development boards.Now it can simulate CPU,memory,I/O register,UART,LCD,TouchScreen and so on.This paper first described how to add a simulation module to SkyEye,then gave very specific details about design and implementation of simulation module of audio output system for S3c2440A.All the data,sent to or sent by audio output system,was captured by this simulation module and used to control the real audio output system on the machine where SkyEye was running.After every transmission of the audio data,this simulation module needed to generate interruption.A test program,used to play audio data,and Linux operating system could run successfully on SkyEye simulator,which proved the correctness of this simulation module

~(195)Os衰变性质的观测

由14MeV中子照射天然铂靶,通过198Pt(n,α)反应产生195Os。用γ(X)γ符合方法搜索了195Os的衰变γ射线,结果没有找到可以属于它衰变的γ射线

Effects of NS-Lactobacillus Complex on Immunity Levels in Weaning Piglets

选择二元杂交(杜/长)20日龄断奶仔猪90头,平均断奶体重8.99kg±1.60kg,按体重和性别分成3个处理组,每处理3个重复。A组为对照组,饲喂玉米、豆粕基础日粮;B组为基础日粮添加NS复合乳酸菌组2g/kg;C组为基础日粮添加抗生素组(2g/kg金霉素、0.25g/kg阿莫西林和0.125g/kg的支原净)。试验共30d,研究微生态制剂NS复合乳酸菌对断奶仔猪体液免疫和细胞免疫水平的影响。结果表明,试验30d时,NS复合乳酸菌组与对照组相比,断奶仔猪血清中的IgM含量和干扰素INF-γ的含量分别高出19.7%和10.2%,猪瘟病毒抗体阳性率高出33.3%,差异显著(P<0.05)。NS复合乳酸菌制剂对加强仔猪体液免疫,维持仔猪的猪瘟、伪狂犬病毒抗体水平和促进机体细胞免疫具有良好效果

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