浅谈NGN网络下ISDN业务的应用和维护

随着NGN网络的组网技术的日益成熟,NGN网络逐步替代了原有的固网PSTN网络,ISDN业务在NGN上的应用也越来越多。对ISDN的概念、应用、组网及数据配置等进行了较全面的介绍,总结了现网应用中的经验,并就应用方面的故障处理问题进行了简要阐述。     

NGN的业务基础应用

以中国铝业股份有限公司的IP电话网为例，介绍了NGN的业务基础应用，指出了NGN网络建设中应注意的问题，并对NGN的发展进行了预测．     

浅谈NGN技术的分析与研究

本文主要介绍了所谓NGN（NEXT GENREATION NETWORK）即下一代网络的含义,并在此基础上对现阶段NGN的两个核心技术：软交换和IMS（IP Multimedia Subsystem）做了简要的对比和说明。最终提出IMS在未来我国网络融合过程中扮演着更为重要的角色,是解决移动与固网融合的重要方式。     

基于软交换技术的光网维护分析

如今软交换技术作为下一代网络的核心技术已经为越来越多的运营商所重视。本文主要分两部分逐步介绍上海NGN网络的发展现状以及软交换应用维护实例。NGN在功能上可划分为四个开放的网络层次:接入和传输层、媒体传送层、控制层、网络业务层。2006年底,上海电信在网络智能化工作的基础上,采用软交换汇接层SS/TG+SHLR方案,全面推广网络智能化工作,通过列出三个应用实例,进一步证明了软交换技术的先进性在NGN网络中的重要性。     

NGN模式及发展策略的探讨

文章着重介绍了NGN的概念、技术原理,基于NGN的下一代通信业务的基本特征,最后介绍了NGN网络发展策略和应用前景。     

电信网络融合的发展之路

关于软交换、IMS以及NGN的关系,目前业界的主要观点认为二者是向NGN演进的不同阶段。NGN描绘了融合网络的一个美好前景,而在向NGN的演进道路上,软交换是传统电话网络向分组网演进的初始阶段,IMS将主要完成多媒体业务的功能,随着IMS成熟性的增加,两者的应用将长期共存。本文主要从软交换、IMS、NGN展开分析,分别介绍了三者目前的发展、应用情况,最后介绍了可能的网络融合的发展之路。     

NGN网络规划与软交换技术

信息技术手段的高速化发展为人类社会发展提供了新的动力支持。NGN网络技术代表了通信业务的融合式发展趋势,同时其也预示着通信网络的发展方向正逐渐由技术驱动转向为业务驱动,NGN网络时代已然来临。但如何能将NGN网络所具备的快速生成、灵活计费等优势充分的发挥出来,现已成为影响组网设计的一项主要难题。本文介绍了NGN网络的内涵,分析了软交换技术的主要功能,并最终就应用软交换技术来开展NGN网络规划展开了深入探究。     

NGN实验网络规划方案的设计与实现

NGN有着广阔的应用和发展前景，本文简要介绍了下一代网络（NGN）的特点及组网原理，针对目前运营商部署NGN网络主要应用于骨干网，一般用户仍无法享受NGN网络带给我们的灵活、便捷以及新颖的各项业务，提出了一套面向用户的行之有效的NGN网络规划方案。     

软交换技术所涉及的几个重要协议的分析与比较

随着Internet的新兴业务的快速发展,将进一步加快下一代网络的演进步伐.针对NGN所涉及的协议的规范与应用在向NGN的演进过程重要性,对基于软交换的NGN技术特点进行了概述,着重分析和比较了NGN所涉及到的几个关键协议,得出NGN相关协议优劣势,从而进一步明确了NGN的演进方向.     

软交换技术所涉及的几个重要协议的分析与比较

随着Internet的新兴业务的快速发展,将进一步加快下一代网络的演进步伐。针对NGN所涉及的协议的规范与应用在向NGN的演进过程重要性,对基于软交换的NGN技术特点进行了概述,着重分析和比较了NGN所涉及到的几个关键协议,得出NGN相关协议优劣势,从而进一步明确了NGN的演进方向。     

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.     

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.     

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.     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

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.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

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.