Research on Visualization Technology and Its Application Based on Clustering Analysis

随着科技的进步特别是整个信息产业的快速发展，我们的社会进入了一个崭新的信息时代。不仅数据采集能力和手段越来越多样化，存储设备技术也迅猛发展，数据采集与存储设备的不断发展带来了大数据的时代。面对大量且繁杂的数据信息，如何从中提取出有价值且便于用户观察的信息是最迫切而重要的问题。显然要解决上述的问题，仅仅采用数据挖掘容易造成得到的信息不易被理解或不一定正确的问题，因而本文研究可视化数据挖掘技术，将数据挖掘和数据可视化技术结合在一起，相辅相成。 目前可视化技术与数据挖掘算法的联系是较松散，针对这一现象，本文主要研究内容是如何将数据挖掘算法与可视化技术更好地更高效地融合，并以聚类分析算法为切入点将挖...With the rapid development of science and technology especially information industry, our society has entered a new era of information. Not only the data collection capacity and means become more and more diversified but also the storage device technology is getting better and better. The continuous development of data acquisition and storage devices has brought the era of big data. Facing a great...学位：工学硕士院系专业：软件学院_计算机软件与理论学号：2432011115227

Visual Simulation of Irregular Ocean Waves

摘要: 讨论了二维不规则长峰波和三维不规则短峰波的模型建立和仿真, 在MATLAB 基础上得到了较为理想的海浪模拟结果, 并 利用Visual C++开发了一个界面, 用以控制风速变化来查看波形的变化, 最后利用OpenGL 完成了三维波浪的显示。大量仿真结果证明, 本文所提的方法是可行且有效的, 对实际海浪具有良好的模拟效果。Abstract: The mathematical models of 2- D irregular long crested waves and 3- D irregular short crested waves are establish,and obtain perfect real wave effect base on Matlab.Exploit a interface base on Visaul C++,so we can observe the change of the ocean waves by wind velocity. In the end, finish the vision of 3- D ocean waves.Large amount of simulation experiments indicated that the methods presented in this paper are feasible and effective,which can successfully simulate the real ocean wave.基金项目: 厦门大学985 工程资助项

Study of photovoltaic characteristics of SnO_2/Si

采用CVd方法在硅单晶上制备SnO2薄膜，对不同硅衬底及在不同温度下淀积SnO2制得SnO2/SI进行光电压谱的测量，得出最佳的制备温度；采用类金属半导体接触模型，推导出有关计算公式，计算得出其介面复合速度和异质结势垒宽度等参数。Tin oxide Films are deposited by CVD method on single crystal silicon.The eFFects of diFFerent deposition temperatures and substrates on the photovoltaic characteristics are studied.Using the metal-semiconductor contact model,the calculation Formulas are derived.The diFFusion length of minority carrier,interFace recombination speed and heterojunction barrier width are calculated.国家自然科学基金;福建省科学基

The EFFect of Preparation Conditions on the Properties of SnO_2/Si

研究了沉积温度、SnCl4溶液的浓度、掺Pd等对SnO2/SI光电压的影响，测量了SnO2/SI的光电压谱，得出最佳的制备条件，进行了有关计算和分析。Some tin oxide Films are deposited by CVD method on single crystal silicons.The eFFect of diFFerent deposition conditions, such as diFFerent substrate temperatures, SnCI4 solutions and Pd doping,on photovoltaic properties of the Films are studied.The best preparation conditions are obtained.Relative parameters is calculated From the photovoltaic spectra.国家自然科学基金;福建省自然科学基

中段尿分离病原菌的分布与耐药分析

目的探讨广州黄埔区三家医院尿培养分离菌的分布特点及耐药性,为临床合理使用抗菌药物提供参考。方法收集2013年1月-2016年6月广州黄埔区三家综合性三甲医院的中段尿标本分离菌2 978株,采用全自动微生物鉴定/药敏测试系统对分离菌株进行细菌鉴定及药敏试验,观察分析病原菌分布特点及耐药性情况。结果 2 978株病原菌中革兰阳性菌546株占18.33%、革兰阴性菌2 432株占81.67%;居前四位的病原菌分别为大肠埃希菌、肺炎克雷伯菌、粪肠球菌、铜绿假单胞菌,分别占46.68%、12.29%、9.64%、6.01%;粪肠球菌对呋喃妥因、利奈唑胺、万古霉素及替加环素耐药率较低,均60%;产超广谱β-内酰胺酶(ESBLs)的大肠埃希菌和肺炎克雷伯菌检出率分别为61.01%(848/1390)和53.01%(194/366);肠杆菌科细菌对碳青霉烯类抗菌药物较敏感。结论尿培养分离病原菌以革兰阴性菌为主,耐药菌株分离率高,定期监测和分析尿培养分离病原菌的分布特点及耐药性变化,对指导临床合理使用抗菌药物具有重要意义

低温胁迫对长苞铁杉幼苗的生理影响

经模拟低温(-12、-8、-4、0、4℃)胁迫处理后,长苞铁杉幼苗叶片和根系相关生理指标均发生明显变化.随着温度降低,叶片光合色素含量增加,但反映光合活性强弱的Chla/Chlb降低;叶片中渗透调节物质脯氨酸和可溶性糖含量增加,呈极显著正相关(r=0.804,p<0.01),根系中可溶性糖含量的减少说明根对低温胁迫的渗透调节更依赖于脯氨酸的累积.幼苗在-4℃及更低温度胁迫下受到严重的冻害使SOD活性持续下降,叶片中POD活性与SOD活性变化呈极显著负相关(r=-0.908,p<0.01),但根系中POD活性与SOD活性没有相关性,说明长苞铁杉幼苗对抗外界胁迫机理的复杂性.叶片MDA含量比根系低可能与叶片中Car能缓解1O2对细胞的伤害有关

靶向HIV-1 vif的高效siRNA的筛选及慢病毒介导的体外抗病毒研究

RNAi技术在艾滋病治疗研究中已展现出巨大的潜力,兼具高效抑制特性和保守性的siRNA靶位是其获得成功应用的重要基础。本研究选择以HIV-1 vif基因为靶区筛选高效保守的RNAi序列,共选择设计了30个识别不同位点的siRNA序列,以pSUPER为载体构建了相应的shRNA表达质粒。通过与pNL4-3质粒在293FT细胞中进行共转染抑制实验,以及对初筛获得的高效序列进行保守性分析显示siRNA-vif37序列具有高效抑制效率和较好的保守性特征。通过与pGL3-vif报告质粒的共转染实验证明siRNA-vif37具有vif基因抑制特异性。带有shRNA-vif37表达元件的重组慢病毒转导后的MT-4细胞在HIV-1NL4-3体外攻毒实验中可显示出较有效的抑制病毒复制的能力,本研究进一步对转导后细胞进行克隆化筛选,获得稳定整合shRNA-vif37表达元件的MT-4-vif37细胞克隆,该细胞具有显著的抑制病毒复制的能力,在高攻毒剂量下仍可获得良好的抑制效果。本研究为进一步应用RNAi技术进行新型艾滋病治疗方法研究提供了重要基础

Preparation,identification and preliminary application of monoclonal antibodies against recombinant human basic fibroblast growth factor

目的制备重组人碱性成纤维细胞生长因子(rECOMbInAnT HuMAn bASIC fIbrOblAST grOWTH fACTOr,rHbfgf)单克隆抗体,鉴定其特性,建立双抗体夹心ElISA检测方法。方法以rHbfgf为免疫原,免疫bAlb/C小鼠,通过细胞融合技术建立能稳定分泌抗rHbfgf杂交瘤细胞株,制备抗rHbfgf单克隆抗体,采用Ig亚类ElISA试剂盒鉴定抗体亚类,间接ElISA法检测抗体效,WESTErn blOT鉴定抗体特异性。HrP标记MCAb并建立夹心ElISA检测方法。结果获得2株(分别命名2d3、5f7)可分泌特异性MCAb的强阳性细胞株,腹水抗体效价在10-5以上,Igg亚类均为Igg1,轻链为k链。WESTErn blOT证明2株MCAb特异性良好,双抗体夹心ElISA检测rHbfgf最低检测限达到2 ng/Ml。结论成功制备高效价的抗rHbfgf单克隆抗体,建立抗rHbfgf双抗体夹心ElISA定量检测方法。This study aimed to prepare and identify monoclonal antibodies against recombinant human basic fibroblast growth factor,which will be used in the establishment of a sandwich ELISA method.Balb/c mice were immunized with rhbFGF,and then positive clones of McAbs were obtained after cell fusion and hybridoma selection.The ascites titers,the subclasses type,and the specificity of McAbs were tested by Ig subtype ELISA kit,indirect ELISA method and Western blot analysis,respectively.Moreover,optimization of the sandwich enzyme-linked immunosorbent assay was studied.As results,two of positive hybridomas were screened out,named 2D3 and 5F7 whose ascites titers of McAbs were over 1:105.It proved that the Ig subtypes of 2D3 and 5F7 McAbs were IgG1,and the light chain was kappa.Western bolt identification suggested that either McAbs of 2D3 or 5F7 could react specifically with rhbFGF.The results indicated that two of high titer,specific McAbs against rhbFGF are achieved and can applied to the development of a quantitative double-antibody sandwich ELISA method to detect rhbFGF.温州医学院科研基金(项目5010

中国自然灾害灾情统计与自组织临界性特征

基于自组织临界性(SOC)思想,在分析中国自然灾害灾情统计特征的基础上,分析并揭示了中国自然灾害灾情的自组织临界性特征。在此基础上,建构了中国自然灾害灾情(包括松花江等七大流域洪涝灾害受灾县数、洪涝灾害伤亡人数、干旱伤亡人数、各类自然灾害总的伤亡人数等)标度-频度分形关系模型。最后指出,中国自然灾害灾情的自组织临界性特征是客观存在的,而标度-频度的幂律值则是一个相对值