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1.
数字化校园发展迅速,同时带来了海量的网络信息.本文针对校园网信息传播及其监控的有效性问题,设计并实现了基于Web日志分析的校园网受众分析系统,通过挖掘Web日志中的相关数据并进行统计、分析、综合,得到了特定信息在特定时期内的传播范围及其用户分布情况,同时基于访问量特征提出了校园网信息的3种基本类型.本文还结合实际校园网的运行数据进行了实验和相应的分析,显示出所建立模型的合理性和有效性.  相似文献   

2.
在管理信息模型集成研究的基础上 ,并结合面向运行的综合网络管理中的服务管理需求 ,提出了一个基于三级抽象的网络管理信息模型 ,其最高级别的对象是对服务的抽象 ;最低级别的对象是资源的抽象 ,通常是传统的被管对象信息模型及所描述的对象 ;中间级别的对象则是对各类具体的网络管理活动的抽象 .该模型通过定义更高层次的抽象描述对不同的信息模型进行集成 ,既满足了服务管理中对服务对象的描述需求 ,又避免了不同信息模型之间的直接转换 .还讨论了用CIM对模型进行描述的可能性  相似文献   

3.
数字化校园发展迅速,同时带来了海量的网络信息.本文针对校园信息传播及其监控的有效性问题,设计并实现了基于Web日志分析的校园网受众分析系统,通过挖掘Web日志中的相关数据并进行统计、分析、综合,得到了特定信息在特定时期内的传播范围及其用户分布情况,同时基于访问量特征提出了校园网信息的3种基本类型.本文还结合实际校园网的运行数据进行了实验和相应的分析,显示出所建立模型的合理性和有效性.  相似文献   

4.
首先提出了基于SNMP(简单网络管理协议)的流量工程网络管理框架模型,然后针对该模型中的网络信息采集部分进行开发和设计,实现了对网络资源和流量信息的实时采集,并对采集到的信息分析和统计,实现流量工程数据库的建立和维护,为流量工程的实施提供准确的流量测量数据和有效的网络管理依据。  相似文献   

5.
基于Java和简单网络管理协议的动态分布式网管系统模型   总被引:1,自引:0,他引:1  
提出了基于Java和简单网络管理协议(SNMP)的动态层次型分布式网管系统模型,解决了中间层管理者动态信息模型问题。利用Java语言的可动态加载特性实现了流动代码机制,利用第3版的SNMP的安全性保证了代码的流动。实现的原型系统的性能包括时间消耗的测量和分析,该模型具有简单、轻便、灵活和实用的特点,更新用例显示了该模型的有效性。  相似文献   

6.
首先阐述了OSS的发展历程,并根据发展趋势,指出OSS目前处于数据管理时代。论述当前电信运营商的OSS系统所面临的数据管理问题,并指出构建OSS统一信息模型可提升数据质量,实现数据的一致性。然后总结了构建OSS统一信息模型的难点。接着对目前存在的信息模型及建模方法进行综述,分析了这些信息模型、建模方法的适用性及各自的优缺点,并对主流电信运营商所构建的信息模型进行了研究。最后,讨论了OSS统一信息模型未来的研究方向。  相似文献   

7.
通过分析传统的两层C/S模型的局限和基于Web的三层C/S模型的优点,提出将基于Web的三层C/S模型应用于网络管理系统,在原有网络管理系统基础上提供了一种强有力的辅助管理工具,使不同层次的网络管理人员能更快、更详细地了解网络运行状况和信息,并着重介绍了该模型在本地网网管系统中的应用.  相似文献   

8.
通过分析传统的两层 C/ S模型的局限和基于 Web的三层 C/ S模型的优点 ,提出将基于 Web的三层 C/ S模型应用于网络管理系统 ,在原有网络管理系统基础上提供了一种强有力的辅助管理工具 ,使不同层次的网络管理人员能更快、更详细地了解网络运行状况和信息 ,并着重介绍了该模型在本地网网管系统中的应用  相似文献   

9.
描述SDH(Synchronous Digital Hierarchy,同步数字系列)同元管理层信息模型和网络管理层信息模型中的管理对象以及管理对象之间的关系,为理解和实现SDH网元层和网络层管理系统提供参考。  相似文献   

10.
通过TMN(电信管理网)的Q3接口对接入网进行管理是接入网建设过程中提出的新的要求,在对接入网的功能结构进行分析的基础上,讨论了接入网管理信息模型的建立,根据GDMO(管理对象定义准则)对接入网中的管理对象进行了定义,并介绍了把GDMO管理对象类转换为C++类的实现方案。  相似文献   

11.
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.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
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.  相似文献   

13.
王慧 《科技信息》2008,(10):240-240
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.  相似文献   

14.
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.  相似文献   

15.
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。  相似文献   

16.
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.  相似文献   

17.
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.  相似文献   

18.
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-  相似文献   

19.
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-  相似文献   

20.
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  相似文献   

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