浅谈纸质图书的发展空间

文章分别通过对大学生、中小学生、农村留守儿童课外阅读图书现状的分析,部分人阅读的习惯以及电子图书盗版问题的分析,阐述了纸质图书还有很广泛的发展空间,今后纸质图书与电子图书应均衡发展,两者应该相互补充、共同发展。     

电子图书时代的图书馆读者服务

随着经济的发展,科技水平的提高,人类已经进入了信息时代,而书籍也走进了电子图书时代,代替了传统的纸质图书。本文主要从电子图书的特点出发,阐述了在电子图书时代下图书馆提高读者服务工作的策略。     

互联网环境下电子图书共享机制设计

互联网环境下信息资源共享机制研究正处于方兴未艾的阶段,网络上电子图书馆的出现从很大程度促进了图书资源的共享,但单靠一个组织或公司来收集提供电子图书共事服务,无论从图书数量还是服务能力来看,都是远远不够的.只有充分的利用互联网上众多PC上的电子图书资源和服务资源,才有可能实现电子图书资源真正意义上的全面共享.现提出一种基于层次且结构拓扑的互联网环境下电子图书共享机制来管理和组织这些分散的PC资源,使之相互协同组织其上的电子图书资源并提供电子图书发现服务.     

移动数字图书馆的图书分类系统设计

为了解决传统数字图书馆在图书分类系统设计上存在的问题,包括综合服务功能不健全以及数字图书资源检索效率低等问题,设计了移动数字图书馆的图书分类系统,并对系统进行总体架构设计,设计了服务器后台硬件系统、服务器前台软件的运行环境、登录操作以及检索操作。系统软件的设计包括系统编码的设计流程和系统索引框架,系统以条形码为基础实现对图书的分类,进行功能测试和索引框架建立,提高电子图书检索水平。实验结果说明所设计的图书分类系统各项性能运行良好,图书分类效率提高了15%以上,具有较高的分类精确度。     

崭露头角的电子媒体

崭露头角的电子媒体文阁随着科学研究的不断深入，特别是电子技术的迅速发展，一个电子媒体的“无纸”化新世纪将会出现在人类面前。无纸图书——电子图书电子图书提供了声音和图像等传统印刷图书所没有的诸多功能，对读者很有吸引力。《吉尼斯世界记录大全》囊括了人类世...     

崭露头角的电子媒体

随着科学研究的不断深入,特别是电子技术的迅速发展,用纸张作为信息主要载体的时代即将结束,一个电子媒体的“无纸”化新世纪将会出现在人类面前。 无纸图书——电子图书 电子图书提供了声音和图像等     

数据挖掘技术在高校图书馆的应用

众所周知,目前随着经济的发展社会的发展,以及目前广为提及的全球化进程的加深,国家间的竞争不再光看硬实力,而是进而转向软实力的竞争。也就是说人才之间的竞争越来越明显。人才成为了国家发展的基础,对于高校而言,这里是人才的出产地,而高校图书馆是高校学生获取知识,提升能力的主要途径。现今的图书馆现在不光是纸质版图书资源,同时出现了电子图书资源。而大量存储是电子图书馆的重要特征,但是因为存储量太大会给检索造成一定的困难,尤其是纸质版图书资源和电子图书资源加合在一起数量更大,检索会更加困难,比如在大量的电子图书资源和纸质版图书资源中如何快速定位、快速找到用户所需等,就这些问题使数据挖掘技术成为了提升图书馆服务质量的首选。文章主要研究数据挖掘技术在高校图书馆尤其是在图书馆服务中的分析。     

电子图书管理的系统设计与实现

互联网为用户提供了一个新的应用空间,随着电子书籍的增加,人们可以通过互联网浏览和下载电子书,因此文章对电子图书进行管理,设计开发管理电子书的系统软件。该系统主要实现前台展示图书,游客浏览,会员登录之后,点券充值,下载图书;后台主要完成会员信息管理、类别信息管理、电子书管理、留言公告管理等功能。     

RFID技术让图书服务漂进世博

采用RFID技术的自助图书漂流亭设备使图书服务进入了世博园区,使用该设备,游客不仅可以实现实体图书的浏览、漂流,还可以实现电子图书、包括世博会电子资料的下载。     

浅谈电子图书和e-book

随着时代的发展,记录信息的载体己不仅仅局限于纸张,而产生了新的电子型信息载体——磁盘、磁带、光盘等。以电子型载体出现的图书即电子图书在出版物中所占比例越来越大,电子化生产、流通、存储和利用信息成了现代图书变革的最大特点。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

A rigorous proof of MIMO channel capacity’s increase with antenna number

It is well known that adding more antennas at the transmitter or at the receiver may offer larger channel capacity in the multiple-input multiple-output（MIMO） communication systems. In this letter, a simple proof is presented for the fact that the channel capacity increases with an increase in the number of receiving antennas. The proof is based on the famous capacity formula of Foschini and Gans with matrix theory.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks