英语原文共 11 页， 英语译文共 17 页， 资料编号：[240427]，资料为PDF文档或Word文档，PDF文档可免费转换为Word

Endogenous Evolution of Patriarchal Clan System in Ancient China (ABSTRACT) This paper studies the endogenous evolution of patriarchal clan system in ancient China. The clan system was abolished in the Qin Dynasty, but it reemerged among high-standing families in the Han Dynasty and spread to common people after the Tang Dynasty. I address two questions: first, why did the clan system survive the destruction in Qin Dynasty? Second, why did its evolution correspond to how government officials were selected? It is argued that the hierarchical preference structure embedded in the clan system helped to increase trust and cooperation among people. It helped people to take collective action by themselves and also opened a back door to influence government decisions. In this sense, the clan system probably also helped to prolong the political institutions for two thousand years. INTRODUCTION As a nation with over five thousand yearsrsquo; history, China poses many interesti

MCU-Controlling Based Bluetooth Data Transferring Jia LIU, Guangmin SUN * , Dequn ZHAO, Xu YAO, Yihang ZHANG Abstract Based on researching of Bluetooth Protocol, a kind of Bluetooth data transferring system based on MCU-controlling has been proposed in the paper. In the system, the MCU in which the Bluetooth HCI protocol has been embedded is used to control the Bluetooth module on UART and make the Bluetooth devices in the Bluetooth network establish connection and transfer data automatically. In the hardware design, the chip C8051F020 is selected as the host controller. Because chip C8051F020 has two UART serial interfaces, it can meet the requirement of design, simplify the circuit and enhance system anti-jamming capability. The Bluetooth module used in the system is CSR Bluetooth Core 4 with Bluetooth Standard 2.0 class 1 which has the advantages of high signal sensitivity, long distance of connection and easy to use.. Keywords: Bluetooth; Data Communication; MCU; HCI

英语原文共 290 页， 中国古代制度的统治胜利 摘要 肯尼斯·沃尔兹挑战IR学者“远视”战国时期的中国看到任何形式的政治实体自由竞争的地方，实质的和文体的特征是相似的。(华尔兹，1986：329-30)事实上，中国或中国原称春秋战国时期的“中央国”：意思是中央和国意味着国家。这个系统为IR学者提供了一个最相似的案例来评估欧洲中心的力量平衡理论.与近代早期的欧洲制度相似，中国古代制度经历了封建等级制度的瓦解、战争的盛行、国际无政府状态、主权领土国家的出现、均势的配置和普遍统治的尝试。就像他们在欧洲的对手一样，寻求统治的人体制似乎面临着不可逾越的障碍：力量平衡、扩张成本上升、地理障碍和巩固征服的困难。然而，与查尔斯五世、路易十四和拿破仑的命运不同，秦国通过自我强化的改革、分而�

英语原文共 30 页， 使用MIT App Inventor 2为基于蓝牙的智能家居进行高效的Android软件开发 Trio Adiono 1 · Sinantya Feranti Anindya 2 · Syifaul Fuada 2 · Khilda Afifah 3 · Irfan Gani Purwanda4. Published online: 2 January 2019 copy; Springer Science Business Media, LLC, part of Springer Nature 2019 摘要：本文介绍了一个基于蓝牙的智能家居系统的Android应用。本研究的目的是设计、开发和评估一个智能家居系统的用户界面原型。所设计的移动端App被命名为MINDS-apps V1，它被希望能够完成三项任务:(1)软控模式控制，即RGB环境灯和风扇;(2)硬控制，即一般的电源开关、窗帘、门锁和(3)监控用途，即湿度和温度传感器。实验总共使用了六种类型的智能家居设备。使用MIT App Inventor 2，设计过程分为两个阶段:使用组件设计器进行用户界面设计，使用代码块编辑器实现编程逻辑。

英语原文共 8 页， 用Matlab编写的99行拓扑优化代码 O. Sigmund 摘要：本文提出了一个简洁的可以使静载结构柔度最小化的拓扑优化程序的Matlab实现方法。Matlab输入行的总数为99行，其中包括了优化程序和有限元子程序。在这99行中有36行用于主程序，12行用于基于最优性准则的优化程序，16行用于网格独立滤波器，35行用于有限元代码。事实上，如果不包含与输出和有限元分析相关的注释行和行，求解一个适定的拓扑优化问题只需要49条Matlab的输入行。通过增加三条附加行，该程序还可以解决多个负载情况下的问题。本代码是为了教学目的而设计的。完整的Matlab代码在附录中给出，同时也可以从网站http://www.topopt.dtu.dk上下载。 关键词：拓扑优化，教学，最优性准则，万维网，Matlab代码 目录 1 背景介绍 1 2 拓扑优化问题 2

英语原文共 3 页， 新的冠状病毒爆发：全球流行病预防的框架问题 传染病爆发的特点是通过看它的繁殖数量，Ro。如果这个数字更大大于1例，Rogt;1例，在统计学上可以把感染传染给继发病例。如果小于或等于1，Rle;1，二级传动链即将结束。尽管初步估计，中国目前对SARS-CoV-2暴发的Ro估计在2.5到2.9之间，相关的全年龄病死率估计为2.3%（1,2）。相比之下，1918-1919年的西班牙流感大流行在全球范围内造成约5000万人死亡，据估计，这次流感大流行的死亡率为1.8%，病死率为1-2%。这些估计的SARS-CoV-2爆发的数字令人担忧，但仅凭这些数据无法对COVID-19的持续威胁进行专家评估。 2002-2003年SARS和2012-2015年中东呼吸综合征（MERS）冠状病毒爆发与不同数量的二级非医院（社区）和医院感染病例相关，但随后的估计显示Rolt;2（3）。与此相反，目前

Global Positioning System (GPS) Donald Pfost and William Casady, Extension Agricultural Engineers Kent Shannon, Associate Director of the Missouri Precision Agriculture Center University of Missouri-Columbia Range determination factors Each GPS satellite continuously broadcasts two radio signals on separate L-band frequencies (the L-band is from 1,000 to 2,000 MHz). The L1 signal (transmitted at 1575.42 MHz) carries two codes, a Coarse/Acquisition (C/A) code and a Precision (P) code. The L2 signal (transmitted at 1227.60 MHz) carries only the P code, which is encrypted so only the military and other “authorized” receivers can interpret it. The use of both the L1 and L2 signals and their P codes produces what is called the Precise Positioning Service (PPS) and is available to the U.S. and allied military, U.S. government agencies and authorized civilian users. The system available for all civilian use accesses only the L1signal and the C/A code and is known as the Sta

英语原文共 22 页， 英语译文共 19 页， 资料编号：[240369]，资料为PDF文档或Word文档，PDF文档可免费转换为Word

英语原文共 24 页， 英语译文共 13 页， 资料编号：[240371]，资料为PDF文档或Word文档，PDF文档可免费转换为Word