Estimation in Partially Linear Spatial Lag Panel Model with Fixed Effects

本文构建了一类部分线性固定效应空间滞后面板模型,在此模型中,综合考虑了固定效应、参数自变量和非参数自变量的影响。基于截面拟极大似然估计方法对模型的参数部分和非参数部分进行了估计,并在个体数n和时期数T都很大的情况下,推导估计量的大样本表现。研究结果表明,在大样本条件下,估计量具有一致性,参数估计量满足渐近正态分布并且收敛速度为（nT）~（1/2）。We proposed a class of partially linear spatial lag panel model with fixed effects. The influence of fixed effect,parameter and nonparametric independent variables are considered synthetically in the model.The parametric and nonparametric parts of the model are estimated on the basis of the profile quasi-maximum likelihood estimation,and asymptotic properties for the estimators are deduced under the condition that the number of individuals and the number of periods are large. The results show that,under large sample conditions,the estimators are consistent and the parameter estimator satisfies the asymptotic normal distribution and the convergence rate is （nT）~（1/2）.国家社会科学基金重大项目“资本存量核算的理论、方法研究与相关数据库建设”（15ZDB135）的阶段成

Female Connotation Analysis in the Modern Popular Song Lyrics

流行歌词文本因其流行性和大众化，承载着多种社会情绪的同时折射着多样的社会和文化心态。在歌词文本中蕴涵着斑驳复杂的性别意识和性别态度，从中寻找现代女性话语，发掘现代女性视角，无疑是切实可行并具有现实意义的，同时也饶有趣味。本文共分为四个部分。绪论部分，阐述“流行音乐”的定义和流行歌词的特征，以及流行音乐的研究价值和研究现状，说明本文将结合相关的女性主义批评理论，以性别视角切入流行歌词的文本分析，从“立”的角度探讨女性这一性别类群独特的性别意识和审美眼光，做填补相关学术空白的尝试。第一章，分析歌词文本中爱情主题里的女性形象。本章选取了当下社会语境中较为鲜明的四类女性形象，包括：自主与自立的女性形象...Because of the epidemic and popularity ,the popular song lyrics contain lots of social mentality,and reflect various social and culture value.There is complex gender ideology and attitude in the pop song lyrics.So we could search for the modern female discourse,and find out the modern female’s points of view from the song lyrics.It is obviously practical and realistic,also interesting. There are f...学位：文学硕士院系专业：人文学院中文系_中国现当代文学学号：20040105

Preparation and Electrochemical Performance of Sn-based Materials as Anode Material for Lithium-ion Battery

锡基材料具有安全性好、比容量高的优点，是下一代锂离子电池理想的负极材料之一。但锡基材料在充放电过程中的剧烈体积变化导致的循环寿命问题制约了其商品化进程。本课题从锡基材料的纳米化以及与石墨烯材料复合两方面入手，通过化学还原法和回流法分别制备了Sn/石墨烯和SnO2/石墨烯复合材料，以改善锡基材料的循环稳定性。主要内容如下： 1.采用化学还原法制备了Sn/石墨烯复合材料，通过XRD、SEM进行材料结构形貌表征和恒流充放电测试进行电化学性能测试，重点考察了表面活性剂、锡负载量对Sn与石墨烯复合状态以及复合材料的电化学性能的影响。结果表明通过化学还原法制备的Sn/GNS复合材料为纳米Sn颗粒均匀分散...Tin-based materials are considered as alternative anode materials for lithium ion batteries because of their safety, relatively high theoretical capacity (790mAh/g), high lithium packing density, and proper operating voltage. However, the commercial use of Sn-based anode materials are greatly hindered by their poor cyclability, which results from its severe volume changing during alloy/dealloy pro...学位：理学硕士院系专业：化学化工学院化学系_物理化学(含化学物理)学号：2052009115133

BAF57 regulates hepatoma cell proliferation and apoptosis via the Wnt pathways

背景和目的肝细胞癌(Hepatocellularcarcinoma，HCC)是全球最常见、高发的恶性肿瘤之一，增长快、高转移性高复发已成为影响HCC预后的最重要因素。随着技术的发展，研究的深入，很多实验报道肝癌细胞内存在很多的异常蛋白表达或者基因突变，而这些异常点往往可以作为靶向治疗的目标点。随着基因靶向治疗的发展，人们发现一部分癌症确实可以得到良好的治疗，生存期明显延长。我们将继续探所肝癌细胞内存在的可能作为靶向治疗的目标点，同时结合靶向治疗，以突破目前肝细胞癌治疗的极限。以往研究发现BAF57(Brg-1-associatedfactor57)是哺乳动物染色质重组复合小体SWI/SNF的一...Background and objective Hepatocellular carcinoma (HCC) is one of the most common and the highest incidence of malignant tumors in the world.The fast growth and high metastatic recurrence has become the most important factors of influencing the prognosis of HCC.With the development of time and technology, many experiments have been reported that there are a lot of abnormal expression or mutation ...学位：医学硕士院系专业：医学院_外科学学号：2452013115351

国外技术性贸易壁垒对我国日用陶瓷出口的影响和对策研究

本文主要从我国日用陶瓷出口遭遇的技术性贸易壁垒的表现形式着手,分析国外技术性贸易壁垒对我国日用陶瓷出口的影响,并再此基础上提出了应对技术性贸易壁垒的对策

Design of Auto Gain Control Circuit with Two-stage Amplification Feedback

设计了一种适用于移动水声通信接收系统的两级放大反馈自动增益控制电路。该电路采用初级放大—滤波—次级放大的信号调理机制,反馈回路同时对两级放大电路进行增益控制,使输出信号稳定在期望值附近,能有效解决移动水声通信中由于收发端相对距离变化、声传播衰减、信道频率选择性衰落、收发端电路频率响应不均匀等因素引起的接收信号时域和频域起伏变化大的问题。海上试验表明:该电路具有良好的幅度均衡性能,能显著提高水声通信质量。An auto gain control(AGC) circuit with two-stage amplification feedback for the receivers of underwater acoustic mobile communication system was presented.The circuit uses the conditioning mechanism of primary amplification—filter—secondary amplification,and the feedback loop controls gains of the two stages amplifiers,making the output signal be stable near the dexpectations so as to effectively solve the problem of signal fluctuation in the time and frequency domains caused by the distance change between transmitter and receiver,sound propagation attenuation,frequency selective fading of underwater acoustics channel and the uneven frequency response of transmitting and receiving circuit.The sea test shows that the circuit has a good performance at amplitude equalization,and can greatly improve the quality of underwater acoustic communication.国家自然科学基金项目(41376040);; 福建省中青年教师教育科研项目(JA15001);; 国家海洋局海洋公益项目(201505027-2

Design of new type of medical infrared temperature measuring instrument

目的:针对市场现有的测温仪的弊端,设计一种新型医用红外测温仪。方法:采用红外线温度传感器采集人体温度,以HT67F5640芯片为主控制器,通过A/D转换把检测的人体温度显示在液晶显示器(liquid crystal display,LCD)上。该仪器设计的电路包括主控制电路、电源电路、红外温度传感器电路、LCD驱动电路、按键电路、报警电路等;软件部分包括主程序,AD采集、LCD显示、蜂鸣器报警以及按键扫描等子程序。结果:该医用红外测温仪测量体温速度快、精度高、重复性好,医务人员反应良好。结论:该测温仪功耗低、使用方便、稳定性高、便于携带、各项参数优越,可以实现患者体温的快速检测。Objective To design a new type of medical infrared temperature measuring instrument.Methods The data on human body temperature were collected by the infrared temperature sensor with HT67F5640 as the main controller,and then displayed on the LCD through the A/D conversion.The circuits of the instrument included power supply circuit,infrared temperature sensor circuit,LCD drive circuit,key circuit,alarm circuit,etc.The software involved in the main program,AD acquisition subroutine,environment temperature compensation subroutine,calibration mode subroutine,etc.Results The instrument gained advantages in speed,precision,repeatability and response from medical staffs.Conclusion The medical infrared thermometer behaves well in low power consumption,easy operation,high stability and portability and etc,and is very suitable for the rapid detection of the patient's temperature

Environment Security Monitoring System for Offshore Caged Fish and Water Quality

为了更好地开展渔业养殖中深水网箱中鱼群状态与水质环境的安全监测,提出了一种深水网箱鱼群与水质环境安全远程监测系统.该系统使用声学方式对鱼群分布状况进行监测;同时采用传感器对水质环境的温度、溶解氧、p H值等进行监测,监测结果通过无线数据传输方式实时传送至微处理器,完成信号去噪、数据提取、显示及报警等.实验结果表明,该监测系统性能稳定可靠,结合嵌入式控制技术与无线数据传输技术,监测操作简便,移动性好;同时兼顾鱼群与水质环境安全,监测更全面到位,在推广深水网箱养殖安全配套设施上具有良好的应用前景.Environment monitoring of fish activity state and water quality is the key to offshore cage safety management.A remote monitoring system for offshore caged fish and water quality is developed in the research.The fish distribution and abundance are monitored strategically using acoustic transducers in the system.Meanwhile,some parameters of water quality are obtained using various sensors,such as temperature sensor,dissolved oxygen sensor and p H sensor. Then the collected data are sent to the user monitor terminal in real time through wireless transmission module.Finally,the results are displayed on a 7-inch liquid crystal display screen( LCD) after data processing. The experiment has been conducted to verify the excellent performance of this system.Combined with embedded control technology and wireless data transmission technology,the flexibility and mobility are improved significantly. Besides,both fish activity and water quality are taken into account,making the monitoring more comprehensive.The results suggest that the system has good application prospects.国家海洋局海洋公益性行业科研专项(201505027-2

FICM干预对急性运动大鼠抗氧化能力的影响

目的:探讨远红外陶瓷微珠对大鼠一次性力竭运动后血清SOD、GSH-Px、MDA含量的影响。方法:将88只雄性SD大鼠分为安静对照组(A组)、模型组(B组)、模型+热水组(C组)、(模型+陶瓷微珠组D组)。B、C、D组大鼠利用下坡跑跑台一次性运动至力竭。各组大鼠分别于安静时与运动后即刻、24h、48h、72h取心脏血,分离血清测定SOD、GSH-Px、MDA含量。结果:D组运动后各时相血清SOD、GSH-Px含量均高于B组与C组同时相(P <0. 05),D组运动后各时相血清MDA含量均低于B组与C组同时相(P <0. 05)。结论:陶瓷微珠干预手段具有抑制急性运动后机体氧自由基生成,减少过氧化损伤的作用。福建省科技厅省自然科学基金项目(2016J01404);;莆田学院育苗基金项目(2017014);莆田学院国家基金预研项目(2016076);;国家体育总局科技服务项目(2017HT008

MOS field effect transistor pressure microsensor

阐述了一种MOS场效应管 (MOSFET)压力微传感器的结构和基本工作原理。通过对该传感器的仿真实验 ,证明了MOSFET压力微传感器可通过简单的电压———电流转换原理 ,利用栅极电容的变化导致漏极电流与开启电压的变化而有效地测出作用于栅极膜片的压力的变化 ,具有较高的灵敏度与稳定性。The structure and basic working principle of a type of MOS field effect transistor pressure microsensor are presented. On the basis of simulation experiment, it proves that this microsensor can make use of the change of gate capacitance which leads to the change of drain current and threshold voltage to measure the change of pressure on the gate diaphragm effectively.This type of microsensor possesses higher sensitivity and higher stability