Study on Vibration Characteristic of Operational Bridge Based on Monitoring Data

桥梁结构监测系统能够对结构进行实时自动的状态监测，为评价运营桥梁的承载能力、使用功能和安全可靠性提供数据基础。近年来因为缺乏科学监测与管理所引起的桥梁垮塌事故频频发生，因此有必要利用监测数据对重要大桥的结构运营状态进行评估。本文基于厦门天圆大桥结构监测系统的实测数据，对单拱肋中承式梁拱组合桥型的振动特性进行研究，重点包括大桥的模态参数识别与短吊杆疲劳寿命估计两方面。本文主要工作内容如下： 首先，阐述了桥梁结构监测系统与模态分析方法的发展现状，总结了中承式拱桥结构特点与短吊杆疲劳问题。系统介绍了自然激励技术与特征系统实现算法理论，讨论了系统阶次确定与剔除虚假模态的方法，并对比分析了天圆大桥已有...The bridge structure monitoring system can monitor the structure operational status in real time, which can provide data for the evaluation of bridge bearing capacity, function and operating safety. In recent years, bridge collapse accident occurred frequently because of the lack of scientific monitoring and management, so it is necessary to use the monitoring data to evaluate the operational stat...学位：工程硕士院系专业：建筑与土木工程学院_工程硕士(建筑与土木工程)学号：2532013115181

关键期后弱视人群视觉通路的结构与功能损害研究

目的： 探讨不同类型弱视患者视觉通路的结构和功能损伤差异及神经机制。 方法：利用功能磁共振、光学相干断层扫描及图形视网膜电图（PERG）观察关键期后弱视人群, 包括屈光参差性弱视（N = 10）和斜视性弱视（N = 7）的视觉神经通路中各阶段的改变, 包括视网膜结构及功能的改变、视网膜－外侧膝状体－视皮层中的大、小细胞通路、视网膜－丘脑－视皮层通路的损害情况。 结果：研究指标显示屈光参差性弱视患者早在视网膜水平便出现变化, 包括神经纤维层厚度、黄斑节细胞复合体、PERG的P50、N95振幅, 而斜视性弱视患者在视网膜层面无明显结构和功能改变。功能磁共振数据显示两类弱视人群的两个主要信息传输通道（视网膜－膝状体－视皮层、视网膜－丘脑－视皮层）均存在功能损害, 且此种损伤具有小细胞（Parvocellular）通路的选择性, 但无疾病类型的差异性。 结论：本研究支持功能磁共振测量可作为衡量弱视功能损伤的客观工具, 研究结果为了解两种不同类型弱视所引起的神经结构和功能变化提供了新的认识。</p

網路互動式3D應用-以室內傢俱擺設為例

[[abstract]]因現今電腦科技資訊的發達，使得3D虛擬實境日益普遍，突破以往大多只能使用2D的網際網路。3D虛擬實境「室內設計互動式平臺」突破傳統，不用請設計師設計，還可在家不用出門，依個人需求、喜好、構想來設計屬於自已的格局。以往要請設計師幫忙設計屬於自已的空間時，常常要與設計師一而再，再而三的討論，才可以漸漸形成自已夢想中的家。我們運用了3DS MAX建構了許多傢俱模型和Virtools Dev的3D整合、動作指令、控制語法、攝影機等方法建立了「室內設計互動式平臺」提供了坪數大小、空間、格局、傢俱種類，讓使用者在家就可以自行更換成自已想要的傢俱種類與擺設

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