校园网络的安全管理策略

校园网在运行过程中对管理和维护的要求越来越高,校园网的安全状况已成为直接影响学校教育教学活动的关键因素．指出校园网安全问题的表现形式并就校园网安全管理的策略进行了探讨和分析,对校园网路由控制管理、网管交换机管理、IP地址的管理、防火墙的管理等提出一些具体解决方案．     

大学校园网网络安全问题的分析与对策

随着大学校园网在教学、科研、管理等方面的广泛应用,校园网运行和管理所面临的安全问题也就越来越突出,校园网的安全问题严重阻碍了大学信息化建设的步伐.本文通过分析校园网安全问题的主要特点及产生的根本原因,提出了加强校园网安全防范的几项建议和策略.     

基于高校校园网安全问题的分析与对策

随着高校校园网建设的飞速发展,有关校园网的安全问题也逐渐显现出来。本文首先分析了目前高校校园网存在的安全问题,介绍了校园网安全管理的特点和常见的威胁,并针对以上问题提出了加强高校校园网安全管理的相关对策。     

基于高校校园网安全问题的分析与对策

随着高校校园网建设的飞速发展,有关校园网的安全问题也逐渐显现出来.本文首先分析了目前高校校园网存在的安全问题,介绍了校园网安全管理的特点和常见的威胁,并针对以上问题提出了加强高校校园网安全管理的相关对策.     

高校校园网安全稳定性的分析与组建

高校校园网已成为高校信息化建设的重要支撑平台,是高校教学管理的重要手段。由于教育教学管理的特殊性,校园网管理的功能繁多,信息量大,各功能之间要求信息互联共享,要求网络稳定好,其中学籍管理、学生成绩管理、试卷管理等信息安全性要求高,在设计构建校园网时,要高度重视校园网的安全、稳定性。文章对校园网安全性、稳定性进行了深入的分析,提出构建校园网安全方案。     

构建校园网安全体系技术研究

针对校园网安全的特点,结合长期的校园网管理经验,探讨了“如何建立多层次纵深防御的校园网安全体系”、“在构建安全体系过程中如何结合多方面安全技术”这两个问题.     

高校校园网安全问题分析与对策研究

校园网在高校的教学、科研、管理中发挥着越来越大的作用,随着校园网应用的不断发展,网络应用的不断深入,校园网面临的安全问题也日益突出。从校园网存在的安全问题进行分析,提出了相应的应对策略和建议,以期建立起一套真正适合高校校园网的安全体系。     

浅析校园网网络安全问题

校园网已经成为高校正常教学、办公不可或缺的基础设施。网络安全问题在校园网的运行和管理中表现得比较突出,没有安全的网络,网络应用就无法顺利进行。通过对校园网网络安全现状的分析,提出了加强校园网络安全的诸多策略,最大限度地改善网络的运行环境。要想实现一个安全、可信、高效校园网络,应该在安全管理上下功夫。     

校园网信息安全及对策

文章分析了校园网存在的安全问题;提出了校园网安全的若干对策,提出了校园网安全规划的思想以及管理与技术并重的安全策略。     

校园网网络安全分析

校园网工程从构建的那一刻起就伴随着安全问题.基于对网络犯罪和网络安全隐患的分析,探讨了如何构建安全校园网网络,分析了目前校园网可能存在的安全隐患问题.并在此基础上提出了加强校园网网络安全管理和解决校园网安全隐患的相关对策和建议.     

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.     

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.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

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-