Big Data and Research of Big data in Modern Internet Aplications

据Gartner研究表明，每天我们要产生2.5QB的数据，而在目前全世界的所有的数据中，90%的数据是近2年内产生的[1]。这些数据来之与各个不同的地方，例如传感器收集到的天气的数据[2]，在社交媒体网站上的帖子[3]，数码相片和录像，购物产生的交易数据[4]，甚至手机GPS的信号产生的地理数据[5]。那么这些数据就是所谓的大数据。 随着全球的企业，政府组织开始认识到大数据的重要性，由机器传感器或者移动设备产生的数据以一个巨大的比例膨胀。有关机构预测在接下来的五年当中，这样的数据会增长超过650%，而这些数据大多都是机器和传感器产生的非结构化的数据。Gartner预测到了2015年，由于业务...Report of Gartner shows, we create 2.5 QB data every day, and all the data around the world, 90% of it was created in these 2 years. These data came from different places such as the weather data from the sensors, the blog articles from the online social websites, the pictures and videos from the digital cameras, the transition data from the purchase actions, even the GPS date from the mobile phon...学位：工程硕士院系专业：信息科学与技术学院_计算机技术学号：X201022100

血清一阶导数荧光光谱诊断早期恶性肿瘤

利用Wistar大鼠接种恶性肉瘤模拟人患上癌症。取Wistar大鼠眼静脉血制备血清,并用乙醇简单处理得上层清液,扫描获得其一阶导数荧光光谱,确定上层清液原卟啉发射带(630 nm附近)的峰高,观察到健康Wistar大鼠与癌变大鼠的血清样存在明显差异,10例癌变样假阳性率为0,而20例正常样中仅有1例假阳性达到了恶性肿瘤早期诊断的目的

Rapid Propagation of Anoectochilus roxburghii

以金线莲(Anoectochilus roxburghii)试管苗带节茎段和顶芽为外植体,用正交试验筛选芽快速增殖的培养基配方,并研究生根粉(ABT)对促根壮苗的作用。结果表明,丛生芽增殖最佳配方为MS+BA 3.5mg/L+KT 1.5mg/L+NAA 0.6mg/L,两个月增殖倍数达3.5;3mg/L 3号生根粉对金线莲生根壮苗效果最佳,使植株生根条数、最长根、植株增高和增叶数分别比对照增加12.8%、34.1%、13.2%和22.4%,从而提高移栽成活率,3种不同基质均达到94%以上。Taking stem segments and apical buds as explants, the optimal culture medium for rapid propagation of Anoectochilus roxburghii were carried out by orthogonal screening experiment. MS + BA 3.5mg/L + KT 1.5mg/L + NAA 0.6mg/L gave the best result for multiplication of adventitious buds and proliferated buds for 3.5 times within 2 months. The growth media supplemented with ABT3 3mg/L increased the number of roots, the length of roots, the height of seedlings and the number of leaves by 12.8%, 34.1%, 13.2% and 22.4%, respectively.福建省漳州市科委项目(Z02028)资

Concentrations and distribution of polycyclic aromatic hydrocarbons and organo chlorides in surface sediment of Xiamen Western Harbour and Minjiang Estuary

参考美国EPA标准方法对厦门西港和闽江口的表层沉积物样品中持续性有机污染物PAHs、PCBs、和DDTs的含量及分布进行分析和考察 ,并对若干污染特征及成因进行探讨 .结果表明 ,厦门西港沉积物样品中总PAHs含量 (ng/ g(干重 ) )较闽江口海域为高 ,其中厦门样品测值范围是 42 5 3 - 15 2 2 4,大多高于 10 0 0 ,推断主要来源于石油类污染 ;闽江口为 316 8-12 6 0 7,大多低于 10 0 0 ,化石燃料燃烧可能是其主要来源 .PCBs和DDT的分析结果表明 ,PCBs并非两海域的主要污染物 ,其含量 (ng/ g(干重 ) )测值范围是厦门西港 9 72— 33 72 ,闽江口 8 71— 30 5 5 ;DDT类含量测值 (ng/g(干重 ) )厦门西港高于闽江口 ,范围分别为 8 6 1— 73 70和 6 17— 30 70 (河口高值站位为 6 3 88) ,空间分布呈近岸高于远岸趋势 .同时表明 ,在厦门海域表层沉积物中DDD是主要降解产物 ,而在闽江口DDE为主要降解产物The U.S.EPA analytical methods were employed to examine surface sediment concentrations of polycyclic aromatic hydrocarbons (PAHs) and organo chlorides (PCBs and DDTs) in Xiamen Western Harbour (XM),in June,1999,and Min River Estuary (MJ) in Oct., 1996.The spatial distribution and main possible sources of these pollutants were discussed.The ranges of PAHs concentration (ng/g(DW)) are 425-1520,with most values higher than 1000 in XM samples,and 315-1260,with most values lower than 1000 in MJ samples respectively.The main possible sources of sediment PAHs were identified as petroleum pollutants for Xiamen Western Harbour,and fossil fuel combustion products by river input for Minjiang Estuary,respectively.Sediment PCBs were found not the main pollutants in the study areas,with concentrations(ng/g(DW))ranging from 9.72 to 33.72,and from 8.71 to 30.55,in XM samples and MJ samples,respectively.Concentrations (ng/g(DW)) of sediment DDT and its degraded compounds show the trend of decreasing off the shore,while ranging from 20 to 70,and 6 to 30,in XM samples and MJ samples,respectively.Meaningful information also displays that the main degradation products are DDD in XM samples and DDE in MJ samples.As for the general results,the disadvantage of hydrodynamics,industrial and municipal wastewater discharge,and harbour activities are inferred as the main aspects of the factors affecting pollution in Xiamen Western Harbour,comparing with those in Minjiang Estuary,which is significantly affected by Minjiang River input.Measures for pollution prevention thus should be taken differently in the two areas

MBE生长面发射激光器的原位厚度监测

在MBE生长"DBR型结构性材料"的过程中,由于生长中的多层结构干涉效应,使高温黑体辐射谱呈现振荡现象,利用此现象辅以计算机数据拟合,可以实现MBE生长中层次、组分和厚度的实时监控,对MBE系统生长垂直腔型结构材料的实时质量监控有重要意义.利用红外高温仪对VCSEL器件生长全过程(包括谐振腔)及多种组分DBR的表观衬底热辐射振荡进行监测,采用准黑体模型,结合扫描电镜、光反射谱等结果进行了分析,理论与实验得到了较好的吻合

Design of universal threshold logic gate based on complementary SET(基于互补型SET的通用阈值逻辑门设计)

与MOS管相比，单电子晶体管(SET)具有超低功耗、超高集成度等优点，被认为是可能取代MOS管的新一代量子器件的主要竞争者.在简要介绍SET特性及通用阈值逻辑门(UTLG)的基础上，沿用CMOS逻辑电路的设计思想，提出了功能强大的基于互补型SET的三变量UTLG实现方案.利用一个UTLG辅之少量门电路就可实现全部256个三变量逻辑函数.通过实例说明了利用查表设计进行UTLG综合的过程.对所设计的SET电路进行了Pspice仿真，结果表明，基于SET的UTLG以及用UTLG实现的全比较器均具有正确的逻辑功能

离子损伤对等离子体辅助分子束外延生长的 Ga NAs/ Ga As和Ga In NAs/ Ga As量子阱的影响（英文）

研究了离子损伤对等离子体辅助分子束外延生长的GaNAs/GaAs和GaInNAs/GaAs量子阱的影响。研究表明离子损伤是影响GaNAs和GaInNAs量子阱质量的关键因素。去离子磁场能有效地去除了等离子体活化产生的氮离子。对于使用去离子磁场生长的GaNAs和GaInNAs量子阱样品，X射线衍射测量和PL谱测量都表明样品的质量被显著地提高。GaInAs量子阱的PL强度已经提高到可以和同样条件下生长的GaInAs量子阱相比较，研究也表明使用的磁场强度越强，样品的光学质量提高越明显