Small and Medium-sized Enterprise Financing Problems and Strategic Research

上个世纪70年代末，我国开始实行改革开放，到80年代开始提出并建立市场 经济体制，经过三十多年的努力，我国已经成为第二大经济体。而这背后的作用离 不开改革开放以来如雨后春笋般出现的大大小小的企业，正是这些企业不断推动着 国民经济的迅猛发展。这些企业不仅包括像中石油、中石化这样的巨型国有企业， 还有更多的是中小规模的企业。 据统计，全国在册的企业共有30多万家，其中，约97%是中小企业，这些企业 解决了中国大约50%的税收，60%的GDP，70%的进出口业务和80%的就业。但是 作出如此多贡献的中小企业，却不能从银行拿到相应份额的贷款，通过内部融资在 其创业初期比较困难，而且融资...In the late of 1970s, China started reform and opening up. And in 1980s, the Chinese government proposed to establish a market economy. After 30 years, China has become the second largest economy in the world, which is inseparable from the efforts of lots of large and small companies. These companies include not only giant SOEs like PetroChina and Sinopec but also many small and medium enterpr...学位：管理学硕士院系专业：管理学院_工商管理硕士(工商管理硕士)学号：1792013115079

An Empirical Study on the Relation between Idiosyncratic Risk and Cross-sectional Stock Returns in China

异质性风险与股票收益率之间的关系一直是学术界争论的焦点之一。本文选取了沪深两市的A股股票为样本对该问题进行了研究。由于多数文献仅以研究对象当地的代表性指数为市场组合来获取异质性风险，并且大多认为此种情况下异质性风险对收益率有显著的影响，因此本文检验了通过更多元化的全球投资是否能够抵冲异质性风险对收益率的影响。从而，本文构造了两个不同的市场组合来提取异质性风险：分别以中国所有股票为市场组合以及25个股票市值最大的国家（包括中国）代表性的市场指数为市场组合。然后运用Fama-MacBeth截面回归法以及投资组合分析法检验了中国市场异质性风险与股票截面收益率之间的关系。发现不同的提取方式以及不同的实...Recently, there is a hot debate on the relationship between idiosyncratic risk and stock returns. In this paper, I investigate this relationship in China. In most studies, people usually just consider stocks in the single market they research as the market portfolio, and usually they find significant relationship between idiosyncratic risk and cross-sectional stock returns. In this paper, I want t...学位：经济学硕士院系专业：王亚南经济研究院_金融学(含保险学)学号：2772009115240

初級段階における中国語発音の指導について

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Design of Radar System for Backing a Car Based on a MCU

设计实现了一种倒车用超声波测距仪;系统以MC68HC908GP32型微控制器为核心进行模块化设计,采用4路探头进行超声波的发射和接收,通过通道选择电路对四路回波进行循环检测;回波信号经多重反馈带通滤波放大电路和过零比较电路后,触发定时器的输入捕捉中断,微控制器存储回波往返时间,经过温度校正和运算后送所测最短距离进行显示并报警;经调试该仪器能满足1.5m范围内的距离测距要求,测量“盲区”小于20cm,具有高的精确度和可靠性;适当改进后可用于其它短距离测距要求的相关系统中。An ultrasonic distance measurement system for backing a car is designed.It is mainly designed with the adoption of the MCU MC68HC908GP32 together with other circuit module.The system detects circularly the four channels which is composed of four probes of transmitting and receiving the ultrasonic wave through select circuit.The reflected signal is disposed by the magnified circuit of multiple feedback band-pass filter and zero-crossing comparative circuit.When the MCU detects the reflecting wave,interrupting of timer would be triggered,and the trip-back time is saved in memory cell.The shortest distance operated through temperature correction is displayed and the system will alarm when the distance is less than the fixed parameters.After debugged,system can meet actual demand within 1.5 meter.The blind distance is less than 20cm and the system is of high precision and reliability.It can also be applied to other relative systems after properly improved

日本語の「ちょっと」に相当する中国語表現："有点儿"、"一点儿"、"一下儿"の習得状況に関する一考察

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Platinum-nickel alloy excavated nano-multipods with hexagonal close-packed structure and superior activity towards hydrogen evolution reaction

铂镍合金在氢析出(HER)、氧还原(ORR)等重要能量转化反应中具有优异催化性质，受到了人们广泛的关注。近日，谢兆雄教授课题组通过简单的溶剂热方法，首次合成出六方晶系的铂镍合金枝状纳米晶，其中每个枝杈结构由六个{11-20}高能晶面裸露的超薄纳米片组装而成。与面心立方晶系铂镍合金相比，亚稳态的六方晶系铂镍合金在HER反应中表现出更加优异的性质。当电流密度为10 mA·cm-2时，其过电位仅有65 mV，同时质量电流密度高达3.03 mA·µgPt-1 (-70 m V vs. RHE)，是目前为止报道的HER催化剂中质量活性最高的，其突出的催化性能主要来源于晶相作用(同质异晶)及大的比表面积。该项工作为发展高催化性能的铂基合金纳米晶提供了新的研究思路。该研究是在谢兆雄教授和蒋亚琪副教授指导下，与傅钢教授共同合作完成。实验部分由博士生曹振明（第一作者）、陈巧丽、沈守宇、卢邦安，硕士生李慧齐以及博士后张嘉伟共同完成，理论计算部分由傅钢教授课题组完成。【Abstract】Crystal phase regulations may endow materials with enhanced or new functionalities. However, syntheses of noble metal-based allomorphic nanomaterials are extremely difficult, and only a few successful examples have been found. Herein, we report the discovery of hexagonal close-packed Pt–Ni alloy, despite the fact that Pt–Ni alloys are typically crystallized in face-centred cubic structures. The hexagonal close-packed Pt–Ni alloy nano-multipods are synthesized via a facile one-pot solvothermal route, where the branches of nano-multipods take the shape of excavated hexagonal prisms assembled by six nanosheets of 2.5nm thickness. The hexagonal close-packed Pt–Ni excavated nano-multipods exhibit superior catalytic property towards the hydrogen evolution reaction in alkaline electrolyte. The overpotential is only 65mV versus reversible hydrogen electrode at a current density of 10 mAcm-2 , and the mass current density reaches 3.03mA µgPt-1 at -70mV versus reversible hydrogen electrode, which outperforms currently reported catalysts to the best of our knowledge.This work was supported by the National Basic Research Program of China (Grant 2015CB932301), the National Natural Science Foundation of China (Grants 21333008, 21603178 and J1030415) and the Natural Science Foundation of Fujian Province of China (No. 2014J01058). 该研究工作得到科技部（批准号：2015CB932301）、国家自然科学基金委（批准号：21333008, 21603178 和 J1030415）和福建省自然科学基金委（No. 2014J01058）的大力资助与支持

中国の名門大学における外国人学生向け中国語教育

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厦门同安湾红树林及临近光滩沉积物孔隙水中溶解活性磷和亚铁分布特征的对比分析

为了解红树林与光滩磷、铁地球化学行为的差异,借助薄膜扩散梯度技术（ZrO-Chelex DGT）,对厦门同安湾红树林及临近光滩孔隙水中溶解活性磷（DRP）、Fe2+浓度进行了原位测量,并采集了相应沉积物柱状样进行测定分析。结果表明:（1）Fe2+与DRP呈现较好的线性正相关,说明磷的吸附/解吸与铁氧化还原循环有关;（2）在不同深度,光滩孔隙水中DRP浓度均高于对应深度红树林。在浅层,由于溪水的补给造成光滩的磷富集;在深层,红树植物根部吸收导致磷浓度下降,光滩有机质含量较多,矿化释放DRP使其浓度较高;（3）孔隙水中的Fe2+浓度分布表明,红树林区域随着深度的增加,逐渐由好氧环境进入厌氧环境;而光滩沉积物氧化还原环境可能受到红树林的影响,孔隙水Fe2+在垂向上波动分布。国家自然科学基金项目(41672226; 41372242)~