Netflow is a technology which is used to accelerate data switch in network equipment by cisco system . it has a powerful data collection and analysis capability and is becoming the uppermost criterion for ip / mpls traffic flow . which is applied widely in network management field Netflow技术是思科公司用在网络设备上进行数据加速交换的一项技术,它的数据采集和测量功能成为最主要的ip / mpls流量分析和计量标准,广泛应用于网络管理领域。
In order to provide better service or to address security hazards , we will occasionally use a cookie . a cookie is a small piece of information which a web site stores on your web browser on your pc and can later retrieve . the cookie cannot be read by a web site other than the one that set the cookie Agon - line store相关网站会记录使用者上站的位址，以及在网站内的浏览活动等相关资料，但这些资料仅供作为流量分析和网路行为调查，以便于改善本网站的服务品质。
In this paper , firstly we introduce some basic concepts and application processions are analyzed in detail about the network simulation technology , then the works are introduce about traffic analysis and traffic modeling in the world , the main research contents of this paper are presented in the end of chapter 1 本文首先对网络仿真技术的基本概念及应用流程做了详尽的分析，然后介绍了国际上在流量分析和建模方面所做的工作以及本文的研究内容。第二章讨论了流量建模的方法。
Based on the study of prevalent dm technology in the detection of network intrusions and the characters of dos attacks , this paper presents a new idea to detect and defend dos attacks by integrating with packet analysis and flow analysis . that is in addition to traditionally producing association rules and frequent episodes rules from packets and connections , trend analysis algorithm is used to forecast and analyze the network flow , the compared results between forecast values and real values become one of the key attributes of rules to detect dos attacks 在对网络攻击检测中数据挖掘的应用和dos攻击流特征深入研究的基础上，创新地提出一种将数据包分析和流量分析共同用于dos攻击特征挖掘的思路，即除了运用传统对数据包和通信连接的关联规则挖掘和序列模式挖掘外，额外增加利用趋势分析算法对网络的流量预测和分析，并将流量预测值与实际值比较结果作为dos特征检测规则的关键属性之一。
In pat 2 , it introduced the financial sheet analyzing and the indexes of analyzing . it emphasized the importance of cash flow analyzing from the financial sheet analyzing to cash flow analyzing . it presented the studying of value evaluating the difference of value evaluating from net profit indexes to cash flow indexes 第二部分，介绍了财务报表分析、现金流量分析及其分析指标、现金流量在企业价值评估方面应用情况等内容，对净利润指标分析和现金流量指标分析进行了比较，突出现金流量分析的重要性。
Topics cover : in income determination ; balance sheet and statement of cash flow ; the role of financial analysis for valuation , cash flow analysis and credit risk analysis ; the role of financial information for contracting ; understanding of analysis of inventory , cash ; receivables ; financial instruments ; various types of financial reporting for leases ; owner ' s equities 主题涵盖：收益决定；平衡表和现金流报表，财务分析在评估中的角色，现金流量分析和信用风险分析；财务信息在订约中的角色；理解存货、现金分析；应受帐款；金融证券；租约的各种金融报表；业主权益。
By means of structure analysis . ratio analysis , comparison analysis and tendency analysis . it makes analysis and evaluation on the company " s financial position and operational performance from seven aspects , which are assets structure , short - term debt paying ability , operation capacity , profitability and profit quality , long - term debt paying ability , analysis on cash flows , and " the du pont system " analysis 采用结构分析、比率分析、比较分析和趋势分析的方法，分资产结构、短期偿债能力、营运能力、盈利能力和盈利质量，长期偿债能力、现金流量分析、杜邦分析等七个方面对该公司的财务状况和经营业绩作出了分析和评价。
The 6 aspects are : the base of structure , the definition of operation activity , the main idea of operation activity of cash flow , about income tax , dividend and interest , form of cash flow statement . the third part is construct index system of cash flow statement . first of all , study the principle and theory base of index system of cash flow statement 首先研究了现金流量分析指标体系构建的原则和理论依据，提出了构建现金流量指标体系的科学性原则、实用性原则和可比性原则，并依据现金流量的分类标准，提出把其作为现金流量分析指标体系的理论依据；其次，从当前现金流量指标体系存在的问题、改进建议以及改进后的现金流量指标体系三方面论述了现金流量分析指标体系的构建。
