快速散列算法在智能移动代理中的应用

针对搜索引擎后台的移动代理从互联网中抓取信息资源时,存在对URL字符串处理能力的不足,提出了一种快速处理存取数据的散列算法,通过在真实值和键值之间建立一一对应关系,快速把进入到移动代理队列中的字符串转化为一种线性表结构,改善队列处理字符串的能力.在Heritrix框架基础上,利用Eclipse 3.3开发平台实现了相应功能.实验结果表明:在加入快速散列算法之后,移动代理在搜索效率和抓取速度等方面得到明显提高.     

并行防火墙系统的容错加权散列调度算法

提出一种用于并行防火墙系统的容错加权散列调度算法,该算法在散列调度的基础上增加了加权处理和容错机制．加权处理根据防火墙组件的不同处理能力调度访问请求,保证处理能力强的防火墙组件处理更多的访问流量,提高了系统的整体效率;容错机制在防火墙组件失效或恢复正常时利用基于连接调度的过渡散列表记录不稳定连接,避免已有连接因算法参数改变而失效．算法性能分析表明：该算法综合了散列调度的高效性、低内存开销以及连接调度的稳定性等优点,为并行防火墙系统提供高效可靠的调度服务．     

基于两阶段散列的Web集群服务器内容分配研究

针对Web集群服务器内容分配不均衡的问题，提出了基于两阶段散列的内容分配算法．该算法首先根据统一资源定位器字符串把服务器内容散列到k＊n个槽中，使得各槽的文件个数均衡；然后根据从Web日志中挖掘出的访问负载信息，采用分段负载互补方法把内容再次散列到孢个槽中，以使各槽内容负载均衡．同时，在集群分发过程中应用该算法，可提高请求的调度效率和节点的缓存命中率．实验结果表明，两阶段散列的负载均衡性能可比一次散列提高28．7％．     

无线传感网络改进混合移动代理路由的研究

移动代理路由的本质是一个多约束条件下的优化问题,针对遗传算法快速随机的全局搜索能力,但对于系统中反馈信息却无法利用、求精确解效率低的问题,本文提出了一种遗传蚁群混合算法的WSN移动代理路由方法.利用遗传算法快速随机的全局搜索能力找到较优解,将较优解代换成蚁群算法的初始信息素,最后采用蚁群算法收敛速度的优点,找到移动代理路由全局最优解.仿真结果表明,该算法能在较短的时间找到最优移动代理路由,相对于其他的路由算法,减少了网络延时和平均能量消耗,提高了数据传输的速度和效率.     

一种磁盘数据快速销毁算法

介绍一种磁盘数据快速销毁算法,算法的初始密钥由单向散列算法、非对称加密算法、随机二进制填充和对称加密算法进行混合处理后,磁盘上的数据在存储时就可以处于一种理论上难以恢复的随机加密状态．在进行数据销毁时,只需要销毁极少量数据,就能够在极短时间内使大量数据不可恢复,从而实现磁盘数据的快速销毁．     

基于移动平台的异构并行字符串匹配算法

针对信息处理中常见的字符串匹配问题,通过对经典的Brute Force算法和KnuthMorris-Pratt算法进行分析,根据GPU异构并行计算任务的分配特性,设计一种针对Knuth-Morris-Pratt算法的数据重叠划分并行方案,并提出一种基于移动平台的异构并行字符串匹配算法KMP_MOP.在PowerVR移动平台环境下使用千万级长度的字符串数据对算法的性能进行测试,同时对算法在其他平台的执行情况进行比较,验证了并行算法的性能可移植性.实验结果表明,KMP_MOP算法能充分利用移动平台中的GPU性能,有效提高具有GPU的移动平台设备的字符串匹配效率.     

IDS中新的快速多模式匹配算法及其设计

网络入侵检测依赖于字符串匹配技术．尽管各种有效的字符串匹配技术不断被使用,但字符串匹配过程的消耗仍是入侵监测系统运行的主要系统开销．为了提高入侵监测系统的运行效率和运算能力,提出并设计了新的字符串匹配算法（NMSA）．算法采用新的匹配思想,应用启发函数获得优于BM移动步长的新的跳跃,同时采用有限状态模式匹配自动机可同时进行多模式匹配．将算法应用于Snort系统,并和其他算法进行比较,实验证明NMSA整体上提高了系统的效率．     

Horspool扩展算法在方块苗文模式匹配中的应用

分析了Horspool算法的原理及特点,提出了一种适用于方块苗文环境的字符串模式匹配算法.该算法结合方块苗文的编码方式及字符串查找的特点,通过对Horspool算法中的字符处理单位进行扩展来适应方块苗文的字符串匹配.实验结果表明,在单字词、双字词和多字词的方块苗文字符串匹配过程中,该算法均呈现出较好的性能,能够用于解决方块苗文的快速检索问题.     

并行电子邮件监听代理的负载均衡算法

提出了并行电子邮件监听代理的负载均衡算法。该算法给每个代理设置了一个代理编号接受区间，通过对数据包的源／目的IP地址和端口号做散列（Hash)运算，把IP数据包映射到某个代理编号子区间内；按照代理的处理能力和负载调节各个代理编号子区间的宽度，从而合理分配积上代理上的网络流量，做到充分利用所有监听代理的计算资源，通过理论分析和实验结果表明，该算法在高带宽环境中有较高的效率，它不仅可用在邮件实时审计系统中，也适用于高带宽的入侵检测系统（IDS）设计。     

在单片机上实现队列计算的一种方法

介绍一种队列快速计算方法,并将其应用于 MCS—51单片机测量控制系统数据处理。不用移动队列的每一个数据,遵循先进先出(FiFO)的队列读写原则,可在测量和控制过程中总保存着最近一段时间采集的数据。文中给出了队列快速计算程序和程序框图。     

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.     

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.     

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-