The Phosphaetynolate Anion as the Building Block for Construction of Novel Phosphorus Frameworks: An Experimental and Theoretical Study

磷是一种非常重要的化学元素，并且涉及到化学科学的各个领域。磷化学的研究范围广泛，涉及从材料科学到生物化学。近年，对于磷氰酸根负离子（phosphaetynolateanion，PCO−）的研究表明，该离子可以作为“磷负离子”的供体，构建新型结构复杂的磷化合物。整篇博士论文以磷氰酸根负离子为出发点，以实验和理论相结合的研究方法，合成分离表征了一系列新型含磷化合物。论文共分为六章，在第一章绪论里，我们将介绍磷氰酸根负离子及其反应活性的背景。第二章，我们重点介绍以磷氰酸根负离子为原料，用紫外线照射的方法，制备第一例单线态的磷宾（phosphinidene）以及反应性研究。在第三章，我们将...Phosphorus is an essential element in all fields of chemical science, ranging from material science to biochemistry. Recently, phosphaetynolate anion (PCO−), formally featuring a phosphorus of oxidation state -1, has emerged to be an excellent building block for construction of structurally sophisticated compounds. The thesis will focus on synthesis and isolation of a series of phosphorus-co...学位：理学博士院系专业：化学化工学院_有机化学学号：2052011015370

Samsung Mobile Marketing Strategy Research——Focus on mobile phone market in Xiamen

随着科技的进步，智能手机已成为人们几乎不离身的日常电子产品。中国拥有庞大的人口基数，市场潜力和需求用户巨大，中国已经成为全球最大的智能手机销售市场。 三星作为国际品牌厂商，自从2001年迈入中国手机市场以来，一直追求稳步发展。面对中国智能手机激烈的市场竞争环境和巨大的市场需求，各大国外大品牌厂商和国内新兴厂商都希望抢先占据市场领导地位进而获得市场份额。而厦门市场作为市场的一个缩影，也充分看到市场的变幻合残酷 本文从战略管理和市场营销的角度，基于厦门市场的情况，综合分析了当前三星手机的市场营销策略并提出了部分建议。首先，本文介绍相关背景及研究目的、理论基础；然后介绍我国手机行业的发展现状。紧...With the progress of technology, intelligent phone has become a daily electronic product. China has huge market potential and users’ demand, so China is becoming the world's largest smartphone market. Samsung, being as international brands, since entering the China mobile phone market in 2001, has always been pursuing the steady development. In the face of China's smartphone competition in the m...学位：工商管理硕士院系专业：管理学院_工商管理硕士(工商管理硕士)学号：1792013115084

The Impact of Ultimate Controlling Shareholders: Tunneling or Propping? Empirical Evidences from Chinese Listed Companies under Financial Crisis

现有国内外文献研究一般认为终极控制人控制权与现金流权的分离，使得终极控制人不仅有能力（对公司的有效控制），而且也有动机（控制权与现金流权的分离）实施利益侵占行为(Tunneling)。终极控制人控制权与现金流权的分离程度越大，预示着这种利益侵占倾向越严重，从而导致公司价值下降幅度越大。在亚洲金融危机下，这种关系表现得尤为明显。 但最近Friedman等(2003)，Riyanto和Toolsema(2008)的研究发现了终极控制人的另外一种截然相反的支撑行为(Propping)，即在遭遇经济下滑，公司处于财务困境中时，终极控制人会使用自有资金来帮助公司摆脱困境，从而使小股东受惠。 在这次金...Recent research have found that the separation of the control right and the cash flow right makes the ultimate controlling shareholders have not only the power, but also the motivation to expropriate the minority shareholders. The larger the divergence, the bigger the likelihood of expropriation is. This relationship has been significantly proved under the Asian financial crisis. However, Friedman...学位：管理学硕士院系专业：管理学院财务学系_财务学学号：1762007115175

Internal Control of Financial Derivative Instruments

随着金融自由化和全球化，金融衍生工具在国际金融市场上得到迅猛发展。金融衍生工具最初是为了规避风险、套期保值、追求最大利润而创设的。“水能载舟，亦能覆舟”，金融衍生工具本身也潜藏着巨大的风险，如若使用不当，就会给企业带来巨大亏损。国际国内接二连三发生的众多金融衍生工具亏损案，大都与金融衍生工具的内部控制失效密切相关。这一系列由金融衍生工具使用不当导致的灾难，不得不让人们开始重新审视金融衍生工具的作用，同时也对金融衍生工具的风险管理尤其是内部控制提出了新的挑战。我国也陆续颁布了一些与金融衍生工具内部控制有关的规范，以引导企业建立健全金融衍生工具的内部控制制度，从而有效地预防和发现相关的风险，并加以...With the globalization and liberalization of financial, financial derivative instruments developed rapidly in international financial market, the initial purpose of financial derivative instruments was in order to avoid market risk, help people hedge and get huge wealth. Everything has two sides, financial derivative instruments are full of risk. When they are misused, the enterprises will suffer ...学位：管理学硕士院系专业：管理学院会计系_会计学学号：1752008115130

浅谈食品中的伪科学

中国有句古话说:民以食为天。食品是人类赖以生存和发展的最基本的物质条件。然而近年来,琳琅满目的食品背后,却蕴含了很多不为人知的秘密。在各种形形色色充满诱惑的食品广告下,食品中的伪科学问题亦成了消费者最关注的问题之一

Intrusion Detection for Wardriving in Wireless Network

为了对无线网络进行入侵检测,设计并实现了无线网络安全监控系统.利用Libpcap函数对无线传输的原始包进行捕获;根据IEEE802.11MAC层协议,对原始包进行协议解码;利用统计分析检测方法,对基于主动扫描的Wardriving入侵进行检测.测试结果表明,该系统能及时发现Wardriving入侵.A wireless network security monitoring system is designed to implement intrusion detection in wireless network. Raw packets of wireless transmission are captured using Libpcap functions and decoded based on IEEE 802.11 MAC layer protocol. Wardriving intrusion based on active scanning is detected using statistic analysis method. Test results show that the system can detect Wardriving intrusion in time.国家部委基金资助项目(5J1400B006

基于230 MHz电力频段的专用LTE射频芯片的设计

本文针对传统电路采用器件分立技术有占据空间大、成本高的问题,定制开发了电力专用射频芯片。着重介绍了射频芯片的设计方法,列举了开发使用的关键技术。该芯片内部集成射频和数字信号处理部分以及MCU,与目前市面上的芯片相比,具有集成度高、固件加固、支持自动化测试等优势。此芯片性能、功耗均达到了产业化的要求。烟台科技项目编号：5206051400K9; 潍坊科技项目编号是：5206041400T

Optimal Directivity Synthesis of an Arbitrary Array Subject to Sidelobe and Cross-Polarization Constraints

本文根据给定的期望极化方向,定义了扫描波束的期望主极化和交叉极化方向,并进一步给出了主极化方向性系数的定义,它可以更为准确的表征天线集中辐射主极; 化分量的程度.在没有副瓣约束和交叉极化约束的条件下,给出了任意阵列主极化方向性系数最优解的解析表达式.并且,在含副瓣约束、零陷约束以及交叉极化约; 束的条件下,我们发展了一种基于凸优化的高效数值综合方法,实现多约束条件下的主极化方向性系数的优化.数值阵列综合结果表明了本文所提出的最优主极化方; 向性系数解析解的正确性,以及这种可以综合考虑副瓣约束、零陷约束和交叉极化约束的数值方向性优化方法的有效性.Definitions of the desired co-polarization and cross-polarization; directions are given for a scanned beampattern according to a desired; polarization direction. Furthermore, the co-polarization directivity is; defined to more accurately represents the degree of the concentration of; co-polarization field over the total radiated power. With this; definition, the co-polarization directivity can be optimized. Its; analytical expression can be derived when no more pattern constraints; exist. In more general cases in which the constraints on the sidelobe; level,nulling points and cross-polarization level exist, an efficient; numerical algorithm based on convex optimization is proposed. Some; numerical synthesis experiments are conducted, and the results show the; effectiveness and robustness of the proposed synthesis techniques.国家自然科学基

Modified GA-FFT for Synthesizing Shaped Pattern of Unequally Spaced Array in Presence of Mutual Coupling

该文提出了一种虚拟的最小均方有源单元方向图展开方法,将不等间隔阵列的有源方向图展开为一个虚拟的均匀间隔阵列的若干单元辐射的叠加。通过该方法,对包含阵元耦合效应的不等间隔阵列方向图,可以使用快速傅里叶变换进行加速计算。并且,该文将这个方法与遗传算法(GA)相结合,得到一种改进的GA-FFT方法,可以应用于解决含阵元互耦的不均匀间隔阵列的赋形波束综合问题。最后,分别对不等间隔的偶极子阵列平顶方向图及微带阵列的余割平方方向图进行了综合,结果表明所提方法的有效性和优势。A new Virtual Least-Square Active Element Pattern Expansion(VLS-AEPE) method is presented in this paper, which considers each active element pattern of an unequally spaced array as the one radiated by some of equally spaced elements of a virtual array. Using the help of this method, the pattern of an unequally spaced array including mutual coupling can be efficiently calculated by FFT. In addition, this method is combined with the Genetic Algorithm(GA) to deal with the shaped pattern synthesis problem for unequally spaced linear arrays. Two synthesis experiments including the synthesis of flat-top pattern for an unequally spaced dipole array and the synthesis of cosec-squared pattern for an unequally spaced microstrip array are conducted to verify the effectiveness and advantages of the proposed algorithm.国家自然科学基金(61301009);; 中央高校基本科研业务费(20720160081)~

基于LTE230长岛电力无线专网建设与研究

本文针对在海岛环境下建设LTE230系统,通过分析长岛的环境状况和对建设条件的描述,并经过严格的选址要求,着重介绍了LTE230系统架构的搭建,具有成本低、覆盖广等特点。在复杂的环境下,对比传统的通信网络,可以发挥其良好的优势,满足了当地智能电网的发展需求。烟台科技项目（编号：5206051400K9）资