Research and Design of Network Game "King of the Future"

2000年到如今，网络游戏以其高速的发展和高额的利润吸引了各个商家，我国的网络游戏企业也如雨后春笋一般不断地呈现出来。中国网络游戏市场巨大，机遇与挑战是并存其中的。中国网游产业在政府的支持、庞大的互联网用户群，以及越来越完善的互联网基础设施等各种有利条件下飞速发展，但是同样也面临着游戏开发专业人才极度缺乏、游戏外挂、私服问题困搅严重和监管混乱等问题。抓住机遇，解决问题，才能更好更健康的发展好网络游戏这个高新产业，本文针对这一系列问题，对游戏“未来之王”进行设计分析。 本游戏基于C/S模式，以VisualStudio2008为开发平台，采用C++语言进行开发，系统通过ODBC驱动和数据库进行无...2000 to the present, online games for its development of high-speed and high profits attract all businesses, China's online game companies have mushroomed general presented. Chinese online game market is huge, opportunities and challenges coexist. The rapid development of China's online game industry in government support, a large population of Internet users, as well as increasingly sophisticated...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X201023023

Research on Spectroscopic Properties and Laser Performance of Pr:YLF Crystal

三价镨离子（Pr3+）在可见光波段存在丰富的跃迁。利用蓝光泵浦，掺Pr材料可以实现蓝色、绿色、橙色、红色和深红色的下转换激光输出。与采用光学非线性过程如倍频、混频方式相比，利用下转换直接获得可见光激光的方式避免了非线性光学晶体的使用，其激光器结构紧凑、转换效率高、光束质量好，并且不需要严格的温控。掺Pr可见光激光器在显示、水下通信、生物医学、量子信息等领域有广阔的应用前景。在众多的掺Pr激光材料中，掺镨氟化钇锂（Pr:LiYF4,或Pr:YLF）晶体由于具有优良的激光特性而受到国际上的广泛重视。然而，由于泵浦源缺乏、材料生长等方面的原因，国内关于掺Pr材料的激光特性的研究开展得很少。本论文从研...The trivalent Praseodymium ion (Pr3+) offers various fluorescence transitions in the visible spectral range. Pumping with blue light sources, down-conversion blue, green, orange, red and deep red lasers can be realized based on the Pr-doped materials. Compared with visible lasers obtained by nonlinear optical processes (e.g. frequency doubling or mixing), the down-conversion visible lasers don’t r...学位：工学博士院系专业：信息科学与技术学院_电路与系统学号：2312010015403

Research On The Financial Accelerator In The Real Estate Market Of China

房地产市场在宏观经济波动中往往扮演重要的角色，所以对房地产市场的波动进行研究是很有意义的，但是传统的理论往往得出与房地产市场现实波动不符的结论，所以寻求新的理论来解读房地产市场就变得很有必要。Bernanke、Gertler和Gilchrist等学者在20世纪八、九十年代创立的金融加速器理论是最近几年兴起的解释宏观经济波动的重要理论，已经被多国数据所支持。本文正是以金融加速器理论的观点对中国的房地产市场进行研究，而本文的核心问题就是对金融加速器效应在房地产市场的存在性进行验证。 本文通过对房地产行业的宏观数据进行基于VAR模型的Johansen协整检验、Granger因果关系检验和线性模型检...The real estate market often plays a very important role in the fluctuations of the macro economy, so it is meaningful to research the fluctuations of the real estate market itself. But the conclusions of most traditional theories usually have very big difference from the fluctuations of the real estate market in the real world. So it is necessary to find a new theory to explain the real estate ma...学位：经济学硕士院系专业：经济学院经济系_管理经济学学号：1532008115219

Strategy Cost Management Study in Hi-Tech Electronic Industry:Base on FJY Company Practice

在高速发展瞬息万变的高科技电子产品市场，企业的战略与成本管理伴随着产品的同质化现象和激烈的价格竞争，正变得越来越重要。本论文将公司战略与成本管理相融合，从战略性角度来研究具体的高科技电子产品企业FJY公司的战略成本管理，以战略性成本管理理论知识为基础，结合FJY公司成本管理的特点和实践，探讨如何在现存条件下通过有效、实用、可操作的战略性成本管理模式，借助公司成本管理ERP系统来引导企业逐步认识和引入现代成本管理理念和方法，全文共分六部分：(1)介绍了高科技电子产品企业的行业特点，实施战略成本管理的可行性和必要性，概括了全文的研究思路与结构;(2)从战略成本管理的理论框架及它与传统成本管理的差别...The high-tech electronic product market is being developing very fast and changing every day with more and more extreme competition, all market players of Hi-tech electronic products have put their top priority on how to keep up a long term and stable growth and core competence, the facts and truths are showing us that the strategy cost management (SCM) is getting more and more important in the hi...学位：工商管理硕士院系专业：管理学院高级经理教育中心（EMBA项目）_高级管理人员工商管理硕士(EMBA)学号：X20051518

Retrieval Methods of CRSP Database

CrSP数据库是美国芝加哥大学开发的金融数据库。介绍了CrSP包含的各子数据库及其内容,并以CrSP自行开发的图形化界面平台CrSPSIfT和WrdS网络查询界面为例,介绍了CrSP数据库的检索方法及个性化功能的使用技巧。CRSP Database is a financial database developed by the University of Chicago in USA.The paper introduces the component sub-databases of CRSP,and takes graphic interface platform CRSPSift and online inquiring interface WRDS for examples to expound the retrieval methods of CRSP Database and use skills of its personalized functions

欧元导入后外汇市场的特征变化

我们使用改进的EGARCH模型考察了外汇市场在欧元导入前后的特征变化。我们发现几个主要货币对美元汇率的波动幅度较之前增加了,各汇率之间的相关程度也加深了。这些现象的发现具有实际的操作意义

双斑东方鲀染色体核型分析

鱼类的染色体核型分析是鱼类遗传学研究的基础,作为我国重要养殖品种的双斑东方鲀(Takifugu bimaculatus)尚未发现有染色体核型的相关报道.采用体内注射植物血球凝集素(PHA)及秋水仙素法制备了双斑东方鲀头肾组织染色体标本并分析其核型.结果表明,双斑东方鲀二倍体染色体数为2n=44,其染色体臂数为NF=62,核型公式为12m+6sm+26t.通过比较分析推测2n=44应该是东方鲀属的染色体基础核型,而其染色体核型的高度保守可能是东方鲀属鱼类易于发生种间杂交的主要原因之一.厦门南方海洋研究中心资助项目(13GYY002NF07);;海洋经济创新发展区域示范专项资助项目(12PYY001SF08-XMDX-2

为什么有风险资本支持的中国新股折价更高

理论分析认为,风险资本可以通过降低信息不对称减少新股折价,这一观点得到了国外经验证据的广泛支持。但令人意外的是,国内实证研究发现,有风险资本支持的中国新股折价反而更高。本文为国内外实证研究在这方面的不同发现提出了两种可能的解释:一是我国新股上市首日收益率不能很好地度量新股折价程度;二是风险资本对新股的选择性投资可能导致估计偏差未能得到充分调整。通过分析2005-2011年上市的912个中国询价制新股,本文发现,虽然有风险资本支持的新股首日收益率比没有风险资本支持的高31%,但当采用新股的发行市盈率相对同行业市盈率中位数的差异来定义新股折价程度时,有风险资本支持的新股折价程度比没有风险资本支持的低7%。我们还发现,当采用以地理位置为基础的工具变量对风险资本自选择问题进行调整后,有风险资本支持的新股折价比没有风险资本支持的低13%-52%。这些发现均印证了以上两种解释

Classification method of diabetes based on integration of characteristic classifier

目的:结合医用电子鼻技术,探讨糖尿病患者及其口腔呼气的气味图谱特征。方法:选择180例糖尿病患者和100例健康者,用医用电子鼻采集280例口腔呼气的气味图谱,采用基于数据特征划分的方法,用支持向量机和随机森林集成模型对糖尿病患者进行分类预测。结果:1线性核函数的支持向量机(SVM1)分类结果不是很理想,低于多项式核(SVM2)、径向基函数核(SVM3)和随机森林(RF)3种分类器,说明分类超平面显然是非线性的;2集成分类器对糖尿病患者和健康者的气味图谱特征的识别准确率可达88.04%。结论:基于特征划分的分类器集成方法预测性能明显好于单一分类器,为使用医用电子鼻进行糖尿病诊断分析提供了一种有效手段。Objective: To discuss the proi le features of oral odor of diabetic patients based on medical electronic nose technology. Methods: 180 patients of diabetes and 100 healthy people were selected, and the proi le features of oral odor of 280 volunteers were collected by using medical electronic nose. The classii cation forecasting was carried out on diabetic patients by using support vector machine(SVM) and random forest integration model based on partitioning method of data characteristics. Results: 1The classii cation result of SVM1 was not very good, which was lower than that of SVM2, SVM3 and RF, and the result showed that the classii cation hyperplane is nonlinear. 2The accurate rate of recognition of integrated classii er on diabetic patients and healthy people is 88.04%. Conclusion: The forecasting performance of classii er integration method based on feature division is superior to that of single classii er signii cantly, which provided an ef ective means for the diagnostic analysis of diabetes based on medical electronic nose.国家自然科学基金项目(No.81373552);; 福建省教育厅A类项目(No.JA14212);; 福建工程学院科研启动项目(No.GY-Z12079)~

Distribution and polluting effects on Capitella capitata, Nephtys oligobranchia, Tharyx sp. on the intertidal mudflats in Shenzhen Estuary

在深圳河治理工程环境影响评估研究中 ,将 1 995年 7月至 1 998年 4月在 3个断面获得的 3种多毛类的数量进行分析 ,得出深圳河口泥滩 A断面和 RB断面的小头虫有明显的季节变化 ,即冬季数量较其他季节高 ,秋季数量较其他季节低 ,ET断面的小头虫数量没有明显的季节变化。RB断面寡鳃齿吻沙蚕数量随时间推移有增加的趋势 ,与有机质含量的变化是相似的。寡鳃齿吻沙蚕和独毛虫的水平分布明显受盐度限制 ,盐度较低的 ET断面寡鳃齿吻沙蚕数量较盐度较高的 A断面和 RB断面的低 ,独毛虫没有分布到 ET断面。 A断面的独毛虫在养猪场废水注入时大量繁殖。文中探讨了溶解氧和有机质含量与 3种小个体多毛类数量的关系。There are two famous Natural Reserve, Mai Po Marshes Reserve and Futian Natural Reserve, in Shenzhen (Deep) Bay. Deep Bay is an internationally important site for waterfowl and mangrove. Environmental stress in Mai Po and Fu Tian mudflats, induced by the accumulation of anthropogenic contaminants, such as heavy metals, poly-chlorinated biphenyl (PCB) and PAHs from industrial effluents, has aroused great concern after the Hong Kong Government declared Mai Po a wetland of international importance under the Ramsar Convention in September 1995.;High clay content, rich organic matter and high density of macrofauna are three ecological characteristics on intertidal mudflats in Shenzhen estuary. Capitella capitata, Nephtys oligobranchia and Tharyx sp. are commom species of small individual polychaete of the intertidal mudflats in Shenzhen Estuary. Capitella capitata is a worldwide species and it is considered as indicator of pollution. ;The data of three species of small individual polychaete got from July 1995 to April 1998 seasonly. Three transects including nine stations were designed for macrobenthic investigation. The study area was located in 114°00′18″E ～114°01′48″E, 22°29′51″N～22°31′66″N. Transect A includes stations A1, A2, A3 which are on the Shenzhen side of Shenzhen Bay. A3 is located near mangrove and the distances between A1 and A2, or between A2 and A3, were about 150 m. Transect RB and ET are on the Hong Kong side of the study area. Transect RB includes stations RBO, RB3 and 45O; Transect ET includes stations ET1, ET2 and ET4. Seasonal sampling was conducted in January (winter), April (spring), July (summer) and October (autumn). To collect benthic samples, a plastic core of 10 cm diameter and 20 cm length was inserted into the sediment to a depth 20cm. The sediment collected was transferred to a plastic bag and labeled with sample number. A total of five replicates were collected at each station. To wash the samples, they were transferred to a bucket and water was added. The slurry was then swung manually and then poured gently through a 0 5 mm sieve. The benthos and sand retained on the sieve were then transferred into bottle with formalin and Rose Bengal by forceps. The specimens were taken to laboratory for identification and counting under a microscope. After counting, three species of polychaete were dried in an oven at 60℃ for 48 hours. Regression analysis used the software SPSS 10.0. The seasonal variations of Capitella capitata, Nephtys oligobranchia and Tharyx sp. vary at three transects. Capitella capitata at transect A and transect RB had clearly seasonal variation. The quantities of Capitella capitata in winter were higher than that in other seasons in the same year. But there was no quantitative patterns for Capitella capitata at transect ET. There were increasing trends for the quantities of Nephtys oligobranchia at transect A and transect RB from July 1995 to April 1998, which was similar to the temporal patterns of organic matter. Regression analysis showed there was significant interrelation between the temporal patterns of organic matter and time. There was no any trend for the quantities of Nephtys oligobranchia at transect ET with the time going. The density and biomass of Tharyx sp. at transect A increased from July 1995 to April 1997, which may related to pig-cultural farms. There were many pig-culture farms near transect A before January 1997. The sewage of the pig-culture farms was discharged into the intertidal mudflat around transect A. There was no seasonal patterns for the density and biomass of Tharyx sp. at transect RB. Tharyx sp. was not found at transect ET during investigative period. ;The distributions of Capitella capitata, Nephtys oligobranchia and Tharyx sp. on the intertidal mudflats in Shenzhen Estuary were different in various transects. The average density and biomass of Capitella capitata (average value of three years) at transect A three years were lower than those at transect ET. But the average density and biomass of Nephtys oligobranchia at transec国家自然科学基金资助项目 (3 9670 1 3 5