“中国特色”的数字出版之路

有人说，手持阅读器如果没有100万台的市场量，就不要理它，因为在那之前，内容的供应者是没有工作空间的。2010年12月，汉王电纸书（即阅读器）用户突破百万，而其出货量已远远大于100万。这标志着中国的电纸书市场进入了一个新的阶段。     

PDF阅读器字体解析引擎的测试方法

PDF文档具有良好的移植性且应用广泛,常被用作恶意代码的载体。PDF文档具有严格的格式校验,对结构复杂的PDF阅读器进行模糊测试时,传统随机模糊测试效率较低。现有基于文件格式的灰盒模糊测试,由于模型描述语言能力不足,难以针对某种文件格式构建统一的数据模型。该文针对PDF阅读器字体解析引擎提出一种批量化构造测试用例的方法。通过对字体文件重构和添加辅助信息方式,构造格式统一的测试用例,对TrueType格式文件构造统一数据模型。在此基础上,开发了模糊测试工具并对20余款PDF阅读器进行了测试,触发了大量崩溃。结果表明:该方法可以有针对性地构造测试用例,并有效地挖掘PDF阅读器中的缺陷。     

一款简易的PDF文档阅读器

PDF文档是目前常用的文档格式,本文介绍了一款小巧、简单易用的PDF文档阅读器,说明了其使用方法,并与传统的AdobeAcrobatReader加以比较.     

iPad和电纸书的比较研究

海外,2010年,亚马逊的kindle阅读器凭其海量电子图书,占据了美国电纸书80%的市场份额,风光无限。而苹果公司i-Pad更是后者居上,2010年iPad全年销量达1500万部,占领90%以上的平板电脑市场,iPad骄人业绩让kindle相形见绌,出版商们纷纷投靠苹果,开始与苹果的甜蜜之旅。     

浅谈电子文献存贮格式及阅读器

阐述了网上应用得较多的几种电子文献存贮格式 ,如TXT格式、PDF格式、BMP格式等 ;并对其相应的阅读器ReadBook、e -Book、AcrobatReader、ACDsee等工具软件的特点与使用作了说明     

XPS文档解析实现

XML Paperspecification（XPS）文档是微软新一代基于XML和．NET Framework3．0的文档格式．作为一种与PDF作用类似的文档格式,要想浏览XPS文档,需要Windows中安装有．NETFramework3．0和IE7或下载安装微软发布的文档阅读器。为了实现平台无关性,需要对XPS文档源码进行解析和重组。本文旨在研究开发具有自主知识产权的XPS文档阅读器。     

电纸书——引领数字阅读潮流

本文介绍了电纸书的概念和发展历程,列举了电纸书的优势,分析了电纸书对未来图书馆阅读的影响。     

一种将北大方正排版文件PS2,S2转换为PDF文件的简便方法

通过书生阅读器可以打开北大方正的排版文件,再利用Arobat的虚拟打印机,就可以直接将北大方正排版文件PS2,S92打印成PDF文件.这种方法方便、简洁.编辑部使用这种方法,将作者投来的论文编排版好后,经编辑部编辑三校后,再通过E-mail传给作者本人校对,最大程度地降低了文章的差错率,提高了编校质量.     

RTF文件阅读器的设计

详细分析RTF格式档的语法和结构，介绍了RTF阅读器的设计原理、主要算法和编程方法，设计了一个RTF阅读器。     

基于ADS的RFID阅读器天线设计与实现

为实现阅读器天线的便携式和实用性,将传统的设计方法与先进的电路仿真软件（ADS）相结合,利用ADS软件原理图与Momentum联合仿真,使用柔性电路板（FPC）,设计一款基于RC500／RC52X射频芯片的RFID阅读器天线。实物样机的仿真与测试结果表明：该阅读器天线各项指标均符合设计要求;与传统阅读器天线相比,其尺寸缩小了30％～50％,在工作频率处回波损耗小于一35dB,输入阻抗50n适应当前阅读器天线小型化、柔性化的发展趋势。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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