Then , the empiristic formula is gained by experimental data processing , making use of calculating by the com puter with the method of least squares 然后对实验数据用最小二乘法处理，来验证理论推导公式的正确性。
2.
Indicators reacting to crisis phenomena are designed with the result of risk classification and reason analysis . with the help of indicators , empiristic analysis establishes the types of risks in government obligation of all counties and constitutes discriminant model and logistic model using six factors , which is derived by cluster analysis and factor analysis 利用警情指标和警兆指标进行实证分析，确定了各区县政府债务风险类别，通过聚类分析和因子分析得出六个主因子，建立了判别模型和logistic模型，给出警限。
3.
Then set out from our domestic reality , it analyzes the characteristics of tax after the reform based on the data from 1994 to 2004 . with the method of cross sectional analyses , it adopts the concept of the marginal tax rate to make empiristic analyses about china ’ s provincial tax growth and economic growth since 1995 to 2004 然后,从我国的实际情况出发,以1994 ? ? 2004年为例,分析了税制改革后我国税收收入所呈现的特征,并采用了边际税率的概念,通过横截面回归的分析方法,对我国1995 ? ? 2004年各地区的税收收入与经济增长进行实证分析。
4.
At the beginning of the paper , a literature review on the domestic and abroad researches of container terminal logistics system is provided introducing some computer simulating model technology apply case on container terminal logistics system on the domestic and abroad ; secondly this article introduce the element and characteristics of container terminal operation system , specially operation flow , controlling principle ( including gate testing principle , ship controlling principle , quay operating principle , yard i / o operating principle , yard running system ) , followed by quality evaluating index and empiristic formulas of container terminal . at last , the paper introduces the basic components , layout , loading and unloading process flow of tian jin container terminals , evaluates the related performance parameters and at last introduces some related empiristic formulas based on the historical data of an actual terminal 本文首先回顾了国内外集装箱码头物流系统的研究动态，介绍了国内外计算机仿真技术在集装箱码头物流系统仿真中的应用情况，然后介绍了集装箱码头作业系统的组成和特点，以及其装卸工艺、作业流程、操作原则(包括大门检查箱作业原则、船舶调度管理原则、码头前沿操作原则、堆场存取箱作业管理原则、堆场管理系统) ，接着介绍集装箱码头系统的性能评价指标和码头通过能力经验公式及出入口车道数计算，并结合天津港集装箱码头物流系统的特点，系统地介绍了天津港集装箱码头的基本组成、布局、装卸工艺、作业流程后，评估了集装箱码头物流系统的相关性能指标，并结合实际码头的历史数据，介绍一些相关的经验公式。
