oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 147 )

2018 ( 5702 )

2017 ( 5584 )

2016 ( 5488 )

Custom range...

Search Results: 1 - 10 of 300060 matches for " 冯嘉美<br>ZHU Haodong "
All listed articles are free for downloading (OA Articles)
Page 1 /300060
Display every page Item
基于Hadoop的大数据处理平台研究
Study on big data processing platform based on Hadoop

朱颢东,,张志锋<br>ZHU Haodong,FENG Jiamei,ZHANG Zhifeng
- , 2017,
Abstract: 大数据时代的到来伴随着海量数据,进而使得筛选出具有价值的信息成为大数据被广泛应用的核心步骤.在此情况下Apache Hadoop顺势而生,其通过简化数据密集、高度并行的分布式应用来应对大数据带来的挑战.由于目前基于Hadoop的大数据平台在多领域普遍使用,从而平台搭建成为进行大数据探索的第一步.而很多文章介绍的平台搭建是在虚拟机中完成,与真实情况存在相应差异.本文讨论以真实集群为基础搭建Hadoop平台的原因,Hadoop集群的强大功能,搭建平台所需设备、环境、安装、设置及测试过程.
基于主题标签和CRF的中文微博命名实体识别
Named entity recognition of Chinese microblog based on theme tag and CRF

朱颢东,杨立志,丁温雪,<br>ZHU Haodong,YANG Lizhi,DING Wenxue,FENG Jiamei
- , 2018,
Abstract: 近年来,网络媒体微博的迅速发展,为命名实体的识别研究提供了一种全新的载体.针对中文微博文本短、表达不清、网络化严重等特点,论文提出了一种规则与统计相结合的中文微博命名实体识别方法.该方法首先利用中文微博的主题标签对处理后的数据进行筛选,然后再选取合适的特征模板,并利用条件随机场模型(Conditional random fields, CRF)进行实体识别.为了满足实验要求,该文将传统网页爬虫方法与API接口采集方法相结合进行微博数据采集.实验结果表明,该方法能够有效提高中文微博命名实体的识别效果.
DEFORMATION MONITORING OF DAM MODEL TEST BY OPTICAL FIBER SENSORS
大坝模型试验的光纤传感变形监测

ZHU Honghu,YIN Jianhua,ZHANG Lin,DONG Jianhua,FUNG Kawai,JIN Wei,<br>朱鸿鹄,殷建华,张 林,董建华,,靳 伟
岩石力学与工程学报 , 2008,
Abstract: 考虑到大坝模型试验中内部变形难以监测的现状,研制了一种新型的基于光纤布拉格光栅(FBG)技术的光纤传感器.这种传感器为圆棒式结构,其表面沿轴向安装了准分布式的光纤布拉格光栅.对于大坝物理模型,该传感器可预埋入坝体和坝基的内部.当大坝受到油压千斤顶荷载产生变形时,该传感器类似于一根一端固定并同时受轴向拉、压和横向弯曲的弹性梁.根据弯梁原理,由光纤布拉格光栅测得的应变结果可反算出大坝沿水平向和竖向的位移分布.室内标定试验结果表明,该传感器测得的变形量与其他常规传感器的读数一致.在一个二维混凝土重力坝物理模型的超载破坏试验中,采用预埋于坝体、坝基内部的光纤传感器以及表面安装式位移计、电阻应变花对该模型进行实时的变形监测.试验结果验证了该光纤传感器在大坝模型内部变形监测中的有效性,同时也揭示了大坝在超载作用下的变形机制和破坏形态.
基于MapReduce的数据流频繁项集挖掘算法
An algorithm for mining frequent item sets from data streams based on MapReduce

朱付保,白庆春,汤萌萌,朱颢东<br>ZHU Fubao,BAI Qingchun,TANG Mengmeng,ZHU Haodong
- , 2017,
Abstract: 针对传统数据流频繁项集计算中效率低、内存消耗大等问题,本文采用并行计算的思想设计了一种基于MapReduce的数据流频繁项集挖掘算法,首先,对进行数据分块压缩和传输,其次,将数据频繁项的计算分布在负载均衡的数据节点,可以有效保证数据的执行效率.最后通过一次调度处理合并各个节点产生的频繁项集并进行合并.理论分析和实验对比结果均表明,该算法对于并行处理数据流频繁项集的统计问题是有效可行的.
Study on the TCM general syndrome of Osteoporosis based on the clinical epidemiological investigation
基于临床流行病学调查的原发性骨质疏松症中医基本证候研究

Xie Yanming,Zhu Yunyin,Ge Jirong,Piao Haiyin,Yu Ji,Wang Heming,Chen Weiheng,Xing Meirong,<br>谢雁鸣,朱芸茵,葛继荣,朴海垠,,王和鸣,陈卫衡,
世界科学技术-中医药现代化 , 2007,
Abstract: 目的:探讨原发性骨质疏松症的证候因素和证候特征。方法:根据临床流行病学调查和调查问卷的方法,采用描述性统计、聚类分析和决策树等数据挖掘技术,对横断面调查数据进行分析。结果:(1)原发性骨质疏松症除骨痛、驼背、身高变矮、骨折外,中医主要症状为腰膝酸软、视物模糊、发脱、腿沉、倦怠乏力和畏寒肢冷;次要症状为怕热、眼睛干涩、烦躁易怒、头晕、齿摇、耳鸣、气短、便秘和盗汗。(2)原发性骨质疏松症的主要证候为肾阳虚证、肾精不足证、肾气虚证、肾阴阳两虚证、脾肾阳虚证、肾阴虚证和肝肾阴虚证,主要证候因素为阴虚、阳虚、气虚、气滞、湿浊和血瘀;(3)阴虚决策树诊断模型以五心烦热、盗汗和便秘三个变量为主,阳虚决策树诊断模型以畏寒肢冷、大便稀溏、腰膝酸软、头晕和气短五个变量为主。结论:(1)原发性骨质疏松症中医6个主要症状和9个次要症状,主要证候因素为阴虚、阳虚、气虚、气滞、湿浊和血瘀,常见证候为肾阳虚证、肾精不足证、肾气虚证、肾阴阳两虚证、脾肾阳虚证、肾阴虚证和肝肾阴虚证。(2)原发性骨质疏松症是以肾、肝、脾三脏虚损为本,气滞、湿浊、血瘀为标的本虚标实之证。 更多还原
A STUDY OF PYRITE IN OPHIOLITIC GOLD DEPOSITS IN THE TOLI, XINJIANG
新疆托里蛇绿岩型金矿床中黄铁矿的研究

GAN Yuan-ming,ZHOU Mei-fu,FENG Yan-ling,RONG He,YUAN Jia-qi,<br>甘源明,,延玲,戎合,
地球学报 , 1987,
Abstract: The gold deposits in the Toli ophiolite can be divided into Anqi and Sor-tohay ore belts. They differ from the other types of gold deposits in that the pyrite in them is characterized by Co/Nil.Pyrite in the former ore belt is rich in As but poor in Co and Ni, while that in the latter one is rich in Co and Ni but poor in As. The unit cell parameters of pyrite in the Anqi ore belt are larger than those of pyrite in the Sartohay ore belt. There is little difference between Mossbauer parameters of pyrite from the two belt and Mossbauer effect shows that, like other gold deposits the element Au does not enter the lattice of the pyrite.
Main Problems of China’s Water Justified System and the Perfection Ways
中国水资源论证制度存在的主要问题及完善的思路

FENG Jia,<br>
资源科学 , 2012,
Abstract: China’s Water Justified System has the potential to enhance water resources protection as well as promote sustainable development.However,the implementation of this system is faced with many difficulties due to the low legal hierarchy of Regulations on Water Resources Justification for Construction Project.The main problems are as follows:firstly,some kinds of water such as rainwater,desalinated water,drained water and running water are not defined as water resources by China’s Water Act,so the system can’t take them into the scope of application; secondly,agriculture,industry and city plans which have profound impacts on water resources and at the same time are strictly limited by it are not defined as part of the scope of the Water Justified System by the existing rule;thirdly,the legal rule which enacted the system is in violation of the Administrative Licensing Act,making it very difficult to be put into enforcement.Besides,the vocational qualification stipulated by the system also heavily violates upper laws,which make it impossible to be carried out;fourthly,the Administrative Punishment Act is also be violated by the system in many aspects,although the so-called illegal contents in the system rule are actually rational and sensible.This phenomenon reflects the tensions between the administrative legality and the administrative rationality,and confirms that the existing Water Justified System needs to be modified.In order to improve the implementation of the system,it is necessary to strengthen the existing system rule by enacting an administrative regulation and thus raise the system’s level in Chinese legal hierarchy.If this can be done,both the problems of narrow application scope and violation of upper laws can be solved successfully.In addition,it will create a better environment for the development of the Water Justified System.And this is the only way to clear obstacles to the system’s implementation and to lay a solid foundation for future water resources justification.
基于模糊C-Means的改进型KNN分类算法
Improved KNN classification algorithm based on Fuzzy C-Means

朱付保,谢利杰,汤萌萌,朱颢东<br>ZHU Fubao,XIE Lijie,TANG Mengmeng,ZHU Haodong
- , 2017,
Abstract: KNN算法是一种思想简单且容易实现的分类算法,但在训练集较大以及特征属性较多时候,其效率低、时间开销大.针对这一问题,论文提出了基于模糊C-means的改进型KNN分类算法,该算法在传统的KNN分类算法基础上引入了模糊C-means理论,通过对样本数据进行聚类处理,用形成的子簇代替该子簇所有的样本集,以减少训练集的数量,从而减少KNN分类过程的工作量、提高分类效率,使KNN算法更好地应用于数据挖掘.通过理论分析和实验结果表明,论文所提算法在面对较大数据时能有效提高算法的效率和精确性,满足处理数据的需求.
刺激响应星形聚合物的合成及其药物可控释放研究
,岸超,袁金颖
化学进展 , 2015, DOI: 10.7536/PC141123
Abstract: 星形聚合物是从一个枝化点呈放射形连接出三条及三条以上线形链的一类具有特殊拓扑结构的聚合物.与组成和分子量相同的线形聚合物相比,星形聚合物具有明确的结构、较窄的分子量分布、较低的黏度和多功能性,已成为高分子领域的研究热点之一.引入刺激响应基团的刺激响应星形聚合物具有随外界环境变化而发生敏感调整的结构特征,并在药物可控释放方面具有重要的应用价值,受到广泛关注.本文总结现阶段刺激响应星形聚合物应用于药物可控释放方面的最新研究成果,主要根据不同的环境刺激信号进行分类,分别介绍了pH、温度、双重或多重刺激响应星形聚合物的合成方法,分析其在溶液中的自组装行为、刺激响应情况和药物可控释放功能,并对相关聚合物体系的改进和发展进行展望.
Construction of eag deletion mutant of Bacillus anthracis vaccine strain A16R
炭疽芽孢杆菌A16R株eag基因缺失突变株构建

Meiqin Gao,Xiankai Liu,Erling Feng,Hengming Tang,Li Zhu,Fusheng Chen,Hengliang Wang,<br>高,刘先凯,尔玲,唐恒明,朱力,陈福生,王恒樑
微生物学报 , 2009,
Abstract: Objective] Construction of eag deletion mutant of Bacillus anthracis vaccine strain A16R. Methods] To study the function of the gene eag of Bacillus anthracis vaccine strain A16R, according to the sequence of Bacillus anthracis Ames strain, we designed primers and constructed a recombinant plasmid by the spectinomycin resistance cassette, upstream homologous fragment and downstream homologous fragment of eag cloned in tandem in pKSV7. We introduced the recombinant into A16R by electroporation and screened the mutant using the principle of homologous recombination. We checked the mutant using the PCR and proteomics. Results] We constructed the recombinant plasmid successfully and got the eag deletion mutant. PCR results showed the gene eag was deleted; SDS PAGE showed evident differences between prime strain and mutant strain. Two-dimensional gel electrophoresis results displayed three protein points identified as EA1 by mass chromatographic analysis presented in prime strain had absented from the mutant strain. Conclusion] We constructed eag deletion mutant of Bacillus anthracis vaccine strain A16R?. This research will be helpful to study the functions of eag gene and the functions of the important genes of Bacillus anthracis.
Page 1 /300060
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.