利用离线语音库无阻碍学习英文

很多朋友在智能手机上安装有道词典学习英语,总会遇到无法联网的尴尬,其实我们可以利用有道词典的离线语音库解决这一难题。     

Google的十片盐碱地

Google作为科技企业中的明星,无所非议地兼具着偶像的气质和巨头的实力,无论是强大的搜索引擎还是风靡的安卓系统,它的每一款产品都在繁荣的背景下茁壮发展,当Google的土地呈现百花齐放的态势之际,肥沃的背面仍然存在着让种子水土不服的盐碱地,     

基于主题深度搜索的数学领域教育平台研究

论文综合利用主题搜索技术、深网信息集成技术和Wiki技术,设计并实现了一个面向数学领域的教育平台.此平台是一个集数学资源共享和用户交流的开放平台,用户在此平台可以利用数学Wiki添加、编辑、评论数学领域信息,提升自主学习能力,实现广泛交流.同时,还能利用数学搜索引擎搜索到专业的数学知识,定制URL检索,扩大检索范围,提高了平台的个性化服务水平及搜索的准确率.实验结果表明,文中基于SVM分类算法的数学主题网页分类器具有较高的准确率和召回率.     

2013年中国网民搜索行为研究报告

1中国搜索引擎网民市场规模 1．1搜索引擎网民规模 截至2013年6月底,中国搜索引擎网民规模为4．70亿．与2012年同期相比增长了4177万人,同比增长9．7％。搜索引擎作为互联网的基础应用,是网民获取信息的重要工具,其使用率自2010年后始终保持存80％左右的水平,     

An empirical molecular docking study of a di-iron binding protein with iron ions

Various molecular docking software packages are available for modeling interactions between small molecules and proteins.However,there have been few reports of modeling the interactions between metal ions and metalloproteins.In this study,the AutoDock package was employed to example docking into a di-iron binding protein,bacterioferritin.Each binding site of this protein was tested for docking with iron ions.Blind docking experiments showed that all docking conformations converged into two clusters,one for internal iron binding in sites within the metalloprotein and the other for external iron binding on the protein surface.Local docking experiments showed that there were significant differences between two internal iron binding sites.Docking at one site gave a reasonable root-mean-square deviation(RMSD) distribution with relatively low binding energy.Analysis of the binding mode quality for this site revealed that more than half of the docking conformations were categorized as having good binding geometry,while no good conformations were found for the other site.Further investigations indicated that coordinating water molecules contributed to the stability of binding geometries.This study provides an empirical approach towards the study of molecular docking in metalloproteins.     

Stochastic computer network with multiple terminals under total accuracy rate

From the viewpoint of service level agreements,data transmission accuracy is one of the critical performances for assessing Internet by service providers and enterprise customers.The stochastic computer network(SCN),in which each edge has several capacities and the accuracy rate,has multiple terminals.This paper is aimed mainly to evaluate the system reliability for an SCN,where system reliability is the probability that the demand can be fulfilled under the total accuracy rate.A minimal capacity vector allows the system to transmit demand to each terminal under the total accuracy rate.This study proposes an efficient algorithm to find all minimal capacity vectors by minimal paths.The system reliability can then be computed in terms of all minimal capacity vectors by the recursive sum of disjoint products(RSDP) algorithm.     

改嫁乌班图上网本焕新春 调教篇

书接上回。千辛万苦在中文界面中安装好了乌班图,临了却发现是个英文版,按新版《三国》里曹操的说法就是：眼睛一眨,老母鸡变鸭。不会装错版本了吧……     

上网本最后的博弈

上网本,英文为“Netbook”,抛开Intel对其冗长的定义,其实它说穿了就是一个尺寸小,便携的低性能笔记本电脑（以下简称“本本”）。它的出现一举填补了2000—3000元档次本本的空白,以低廉的价格引爆了市场。然而风光过后,上网本暴露出来的缺陷,也让它在面对新的竞争对手时力不从心。在超低电压本本和平板电脑的层层重压下,上网本终于感受到了生存的威胁。     

中国计算机学会第九届全国搜索引擎和网上信息挖掘学术研讨会（SEWM2011）征文通知

第九届全国搜索引擎和网上信息挖掘学术研讨会（SEWM2011）由中国计算机学会主办,河北大学承办。该系列会议每年举行一次,现已成为国内海量网络信息处理与应用领域最主要的学术活动之一。此次会议将为网络信息搜索与挖掘领域的学者交流最新研究成果、进行广泛的学术讨论提供便利,并且将邀请国内外该领域的著名学者做精彩报告,同时将保持SEWM会议的传统,组织搜索和挖掘相关技术的评测。会议还将评出优秀学生论文,颁发证书并给予奖励。