关于宽带路由的使用

目前,ADSL渗透我们生活的各个角落,不论是企业、网吧,还是家庭个人都使用ADSL上网。通常情况下,一条ADSL线路只能支持一台电脑上网,但使用了组网设备之后,可以实现一条ADSL线路支持多台电脑共享上网。一般来说,实现ADSL的共享组网的设备有ADSL Modem、宽带路由器和交换机。下面笔者着重谈一下宽带路由的使用方法。     

ADSL宽带接入方式的研究与实践

简述了电信ADSL宽带接入方式的特点，并针对ADSL宽带接入方式，给出了“有服务器共享连接”和“无服务器共享连接”的具体解决方案以及操作要点。     

单机二级服务器代理共享Internet在校园网中的应用

通过实际的操作，介绍了用单机实现二级服务器共享上网的步骤，同时介绍了采用ADSL技术实现宽带高速接入上网的优势。     

关于家庭宽带ADSL技术的见解

现在的家庭宽带多数上都是用的ADSL的上网方式,ADSL的英文全称是AsymmetricDigitalSubscriber,中文意思是“非对称数字用户线路”。它以普通电话线路做为传输介质而实现的上行高达1M下行8Mbps的带宽,也就是说ADSL技术是一种不对称数字用户线实现宽带接入互连网的技术,ADSL作为一种传输层的技术,克服了传统用户在“最后一公里”的“瓶颈”,实现了真正意义上的宽带接入。     

ADSL宽带共享的实现途径

提出ADSL宽带网络共享的两种实现方式，即软件解决方案和硬件解决方案，并比较研究了两种方案的优缺点。     

浅析宽带路由器实现ADSL多机共享上网的方案

目前一个家庭拥有多台电脑,组建一个家庭网的情况越来越普遍。通过使用组网设备,可以实现一条ADSL线路支持多台电脑共享上网;因此,家用宽带路由器越来越受家庭用户的青睐,因为它使用方便且对上网具有一定的网络安全保障。     

IPTV与Qos服务保障

目前,用户通过多口ADSL宽带实现上网和看IPTV电视的连线方式如上图所示,电脑连接到ADSL MODEM的LAN1口;中兴的ZXV10 B600机顶盒通过其WAN口上联至ADSL MODEM的LAN2口,通过视音频线连接电视机。     

ADSL技术原理及应用

介绍了ADSL上网的接入结构模型并对其进行了分析，说明它与MOREM上网接入方式的不同，可支持三个通道同时工作，对于网邑和较小的用户单位是一种较佳的组网方案。     

用好你的ADSL

ADSL的出现,让人真正体验到在线冲浪的乐趣。可是,它有时也会“闹点情绪”,影响上网效率。本文介绍一些ADSL使用和维护方面的新发现、新经验,希望对你有所帮助。     

借助路由器防范网上的恶意攻击

除了ADSL拨号上网外，小区上网也是很普遍的方式。如果你采用的是小区上网，是否觉得路由器仅仅就是个路由器呢?其实不然，利用好你的路由器，还能够防范黑客的攻击。     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

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