Using Genetic Algorithms to Pick Stocks and Manage Portfolio in Technical Analysis System

在投资领域，如何高效地进行资产配置、获得高收益并控制风险是每个投资者进行投资决策时最为关注的问题，如何有效地选股和进行投资组合管理是一个广泛存在的难题。技术分析是主流的选股方法之一，是通过分析历史的市场数据如股价、成交量等，来预测股票未来的趋势的一种投资分析方法；遗传算法是模拟自然界物种进化的随机全局搜索最优解的算法，目前广泛应用于组合优化、机器学习、自适应控制、信号处理等领域；证券投资组合优化问题的实质就是有限的资产在具有不同风险收益特性的证券之间的优化配置问题。 本文基于遗传算法构建了在技术分析系统中选股和管理投资组合的量化投资模型。进行选股时，遗传算法被用来优化多个技术指标间的比重，综...In the field of investment how to efficiently allocate a capital, have better returns and control risks is the primary concern of every investor when making investment decisions, how to effectively choose stocks and manage portfolio is always a widespread problem. Technical analysis is one of the most popular methods for stock picking, by analyzing historical market data such as stock prices, volu...学位：应用统计硕士院系专业：王亚南经济研究院_应用统计硕士学号：2772013115281

Research and application of heavy metal leaching of waste concretein Xiamen area

重金属是我国“十二五”规划中重点防控的污染物，重金属对环境和人体极具潜在的威胁，它不但不能被微生物分解，反而可以被生物体富集，或与某些阴离子（团）形成其他毒性更强的金属化合物。重金属在环境中将经历地质和生化双重循环迁移转化，并通过各种渠道（如大气、饮水、食物等）进入人体，这种摄取将对人体造成极大危害。重金属的过量能抑制生物酶的活性，影响人体正常的生物化学反应。重金属与人体蛋白质、核糖、激素等反应，形成金属络合物或螯合物，使其丧失或改变原来的生理化学功能而产生病变。 我国建筑产业飞速发展，建设过程中产生了大量建筑垃圾，造成城市固体废弃物量的急剧增加，混凝土等建筑垃圾的再利用是解决上述问题的有效...National “12th-5 years plan” had an emphasize on the control and treatment of heavy metal element pollution, which can not be decomposed by microorganism and can be enriched in living things. The heavy metals in the environment will participate in geological and biochemical double circular, finally through the atmosphere, water, food and other forms of human intake destroy the healthy of human bei...学位：工程硕士院系专业：材料学院_工程硕士(材料工程)学号：X201219301

Comparison Study on Performance Evaluation of Public sector and Enterprise

摘要 近百年来，现代管理不断发展，从上个世纪开始，西方现代管理理论中开始推出和普及绩效管理，它源于企业并实践于企业，取得了良好的效果，并在企业界得到大量的推广。上世纪八十年代开始，西方国家政府提出改革传统管理模式，以提高政府行政效率、行政质量及行政效能，所以，引入了企业的绩效管理模式，在社会上取得良好的反响。随后，我国的外资企业、国营单位及政府等组织，也陆续引入了绩效管理。绩效评估是绩效管理的其中一个环节，其实施的状况如何，对整体绩效管理有着关至关重要的影响，甚至于可以说，绩效评估失败也意味着一个组织的绩效管理失败，绩效管理失败意味着人力资源管理失败，人力资源管理失败，意味着政府管理或企业经...Abstract For the past one hundred years, the modern management has been constantly developed. Since last century, the performance evaluation system has been introduced and popularized among modern Western management method. Performance evaluation system was originated from the enterprise and served for it, where good results had been recognized and promoted massively among the enterprise. Start...学位：公共管理硕士院系专业：公共事务学院_公共管理硕士学号：X201413603

On the Legal Supervision to Reduction of Large and Small-sized non tradable Shares

“大小非”减持是当前中国资本市场的热点问题。“大小非”解禁打破市场供需平衡，加深市场下跌幅度，令投资者蒙受经济损失，影响证券市场资源配置基本职能的行使。由于股权分置改革（下文简称股改）和“大小非”流通的法律效力，限制“大小非”减持的救市政策的合法性难免受到质疑。面对“大小非”减持这个新事物，我们有必要跳出传统思维误区，不能只重视政策调控而忽视法律救济。其实，无论股改还是“大小非”减持都和法律有着千丝万缕的联系，那么对“大小非”减持的监管，法律也不能缺位。 本文由以下三章组成： 第一章主要论述了股改和“大小非”产生的背景，以及“大小非”解禁带来的问题与挑战。结合法律手段的天然优势，进而指出加...The reduction of large and small-sized non-tradable shares is the hot spot currently in China stock market. The reduction of Large and Small-sized non-tradable shares upsets a balance and accelerates the decline of the stock market and makes a great loss to investors. The function of fiancing of stock market is also set back by the reduction. Because both non-tradable shares reform and circulation...学位：法律硕士院系专业：法学院法律系_法律硕士(JM)学号：1292006115062

Progress of interfacial geochemistry of mercury

国家自然科学基金资助项目(20077016);; 中国博士后基金资助项目(2002032148

新媒体时代传播研究转型问题分析

新媒体时代给媒体传播带来一定的影响,从而引起了传播学界观念的变化。而伴随着媒体传播的变化发展,在传播认识、传播技术和传播活动方面,传播研究的内容也开始发生变化。本文在分析新媒体时代传播研究转型情况的基础上,对传播研究在新媒体时代的转型策略展开了探讨

Study on Existent Form of Mercury in Sediments of Miyun Reservoir,Beijng

在改进Tessier方法的基础上,利用冷原子吸收对北京密云水库沉积物中汞的形态进行研究,发现密云水库沉积物的总汞含量较高,沉积物中的汞主要以气态汞、有机汞和硫化物汞的形式存在,生物可以直接利用的汞较低,但一些目前不能直接利用的汞在一定条件下可以转化为可利用的汞,需要对此加以关注。On the bases of modified Tessier method,the existent forms of mercury in sediments of Miyun reservoir,Beijing were determined with cold vapor atomic absorption(CVAA).The results showed that total mercury in the sediments is high,and that gaseous mercury,organic mercury and sulfide mercury(residual mercury) are the main form of mercury.Most of them can not be used by biomass,but,what should be noted is that some unusable mercury can be transformed usable mercury under special conditions..国家自然科学基金(20077016);; 中国博士后基金(2002032148);; 厦门大学行动计划联合资助项

电视真人秀节目品牌形象构成要素研究——以《我是歌手》节目为例

真人秀节目的繁荣成为特殊的文化现象。本研究针对目前节目品牌形象缺乏完善的评估体系的现状,制定了真人秀品牌形象的构成要素框架,并以《我是歌手》为例对306名受访者进行测量,验证了量表的合理性。研究发现,专业力和广告因素对真人秀节目品牌形象的正向影响最为显著,其次是亲和力,而职业伦理因子影响最不显著

Distribution and Species of Mercury in Water and Sediments from Huangpu River

黄浦江江水的总汞、溶解态汞和颗粒汞含量变化较大,其平均值分别为(0.4±0.44)ng/mL、(0.27±0.42)ng/mL和(0.13±0.10)ng/mL,江水中汞以溶解态汞为主.黄浦江沉积物的总汞含量为70.52ng/g~387.30ng/g,平均汞含量为(204.03±97.41)ng/g.江水和沉积物中汞的沿江分布具有中游高,上游和下游低的特征,西渡—南浦大桥江段汞含量为整个黄浦江最高的江段,汞的分布特征与两岸工农业布局相一致.沉积物总汞与有机质显著相关,沉积物中高汞含量的地点都在高水汞点的下游,与河流的动力沉积特点一致.沉积物中汞以可交换态、腐殖酸结合态、残渣态为主,少量为碳酸盐结合态.从上游到下游,沉积物中可交换态汞具有两端高中间低的特点,而残渣态汞与此相反.在剖面方向上,沉积物中的汞主要集中在残渣态,少量为腐殖酸结合态,可交换态及碳酸盐结合态,随着深度增加残渣态所占比例不规则增加.愈接近长江口,沉积物中的重金属愈容易被重新激活.Levels of total mercury, soluble mercury and particle mercury in water of Huangpu River change greatly, their average values are (0.40.44)ng/mL, (0.270.42)ng/mL, (0.130.10)ng/mL respectively. Mercury in water is mainly in the form of soluble mercury. Average mercury content in sediment of Huangpu River is relative high and up to (204.0397.41)ng/g, with a range of 70.52ng/g387.30ng/g. Mercury content is high in the middle reach of Huangpu River, especially in section of Xidu-Nanpu Bridge, and low in upstream and downstream. Distribution of mercury is hightly related with distribution of industry plants and farming. Locations with high mercury content in sediment are in the downstream of locations with high mercury content in water. Mercury (in sediments) is mainly in the form of residue, exchangeable ions, and humics-bound, seldom is in the form of carbonate-bound. Contrary to residue-bound mercury, exchangeable mercury is low in the middle reach, and high in upstream and downstream. There mainly are residue-bound mercury and little humics-bound mercury, exchangeable mercury, and carbonate-bound mercury in sediment in profile, and the residue-bound mercury increases irregularly with depth. Nearing the Mouth of Yangtze River, mercury in sediment becomes more active.国家自然科学基金资助项目(20077016);; 中国博士后基金项目(2002032148);; 厦门大学行动计划联合资助项目(0660-X01114

Formation and solving for the micro-waves of fly-cut surface introduced by spindle error

为分析超精密飞切机床加工表面微波纹的形成机理,研究了主轴回转误差信息提取与表面形貌仿真技术,获取微波纹误差来源并研究解决方案。首先,在超精密飞切机床主轴上搭载五通道在线电容位移检测系统,并对采集到的信号进行误差分析提取。然后,建立飞切加工表面微观形貌三维仿真模型,仿真分析主轴误差引入的加工表面微波纹,并与表面检测结果比对确定误差来源。最后,通过调整主轴电机控制系统抑制该误差。三维仿真和实测结果相吻合,证实超精密飞切机床主轴转速波动导致的回转误差造成了工件表面1 Hz左右的规律性条纹,对主轴转速控制系统进行数字化改造后,基本消除了该因素导致的表面微波纹,表面粗糙度从5 nm以上抑制到2 nm左右,PV值优于10 nm。超精密飞切机床主轴转速波动会对飞切加工表面微观形貌以及表面粗糙度产生显著影响,需至少控制在0.5 r/min以内。In order to find out the formation mechanism of micro-waves on the fly-cut surface,the spindle motion error was sampled and a 3D topography simulation model was compiled. Firstly,a nano-class testing and evaluation system was established on the fly cutting machine,the displacement data was sampled and the spindle motion error was analyzed.Then a 3D surface profile topography simulation model was established to analyze the micro-waves caused by the spindle motion error. The simulated surface was compared with the measured surface to find out the error sources. Finally,the characteristics of spindle were improved by adjusting the control system of the spindle motor. The simulated 3D surface profile topography was similar to that of the measured profile,which verified that the macro-waves was caused by the undulate of the spindle speed. When the spindle characteristics was improved,the macro-waves caused by the spindle motion error almost disappeared,and the surface roughness reduced from more than 5 nm to 2 nm. It is thus concluded that the undulate of ultra-precision fly cutting machine spindle speed causes macro-waves on the work-piece surface,and the undulate spindle speed must less than 0. 5 r / min.基金项目:高档数控机床与基础制造装备《强激光光学元件超精密制造关键装备研制》(2013ZX04006011-102-001