基于802.16e的WIMAX入网过程浅析

本文主要分析了802.16e协议中关于入网的部分,以及这部分的设计与实现.     

铁路分组交换数据网的用户分布及入网方式的研究

介绍了铁路分组数据通信网的用户设备入网接口规程，网络业务及可选参数，入网方式等。     

使用NOVELL入网底稿和菜单提高网络管理水平

ＮＯＶＥＬＬ局域网已在我院建成并投入了使用．在该局域网上，广泛使用了无盘工作站技术．而这种工作环境，大多数学生不很熟悉。为此，笔者采用ＮＯＶＥＬＬ网系统入网底稿与用户入网底稿相结合的办法，配上美观大方的菜单，让不熟悉网络的用户顺利地进入网络并充分享用网络资源．这不仅提高了工作效率，而且更有利于网络的推广使用。     

寻呼机入网销售管理系统

利用Ｄｅｌｐｈｉ高效的生成代码和编译速度，开发了寻呼机入网销售管理系统；文中介绍了该系统的功能模块和程序流程，并阐明系统中的一些关键技术的处理。     

嵌入网SCP过载控制模型与算法的研究

嵌入网的SSP是设在端局,其业务流量比较大.在嵌入网中直接使用为叠加网设计的SCP过载控制算法会由于部分SSP过载而使SCP过载控制算法的性能下降.针对这种情况,首先定义了一种嵌入网的排队模型,然后根据这个排队模型设计了一种基于网络的SCP过载控制模型和算法.理论分析和实验结果表明该算法能够有效地对SCP和SSP的过载进行控制.     

移动通信重入网用户研究

移动通信现阶段存在大进大出的现象,即新入网的用户很多,但是离网的用户也很多,其中大量的用户是同一个用户,即重入网现象比较严重。大量的重入网用户会造成大量的号码资源浪费,对移动运营商来说,消耗了很多的资源和成本。准确识别重入网用户,采取行之有效的市场解决策略,才能很好的解决问题。     

跳频通信系统中的迟入网技术研究

介绍了超短波跳频电台系统结构及基本原理,分析了时间信息(TOD)与3种跳频同步分类,提出了一种迟入网同步方案。     

改进的呼叫指纹算法及其在重入网识别中的应用

针对传统呼叫指纹算法在实际应用中识别准确率低、 识别对象局限性大、 识别时间长等问题, 在Hausdorff距离的基础上提出一种新的匹配算法, 从而提高了重入网用户识别的精度, 扩大了识别对象的适用范围.     

网关局话单处理系统的设计与开发

为了向市场经营部门提供强有力的后台支撑,我开发出了网关局话单处理系统,本文介绍了网关局话单处理系统的设计与开发：以网关局产生的话单文件为基础数据,通过编程将话单文件导入数据库,然后分析统计,得出其他运营商的各种ip的高端用户以及各种ip的发展量和速度,并且通过分析还可以得出其他运营商每天的入网数、用户数、发展速度以及其他运营商的高端用户,掌握规律,提出业务预测和相应对策,做好市场经营部门的后台有力支撑。     

WINNT无盘网络组建方法

该文着重阐述WINNT无盘网络体系结构及其工作站（dos方式入网及WIN95方式入网）配置文件的建立过程。     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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