As the largest and latest - established cargo airlines in china , air china cargo has the widest international route network and leading throughput of cargo and mail in china . however , its status is being threatened by both domestic and international airlines 作为中国规模最大，国际航线网络最丰富、货邮周转量持续领先、国内成立最晚的货运航空公司，受到了来自物流、快件公司、综合运输商、代理的重重挤压。
The length of railways in operation is an important indicator to show the development of the intra ? structure for the railway transport , and also the essential data to calculate volume of passenger freight transport , traffic density and utilization efficiency of the locomotives and carriages 铁路营业里程是反映铁路运输业基础设施发展水平的重要指标，也是计算客货周转量、运输密度和机车车辆运用效率等指标的基础资料。
Freight ton ? kilometers ( passenger ? kilometers ) ： refer to the sum of the products of the volume of transported cargo ( passengers ) multiplying by the transport distance , usually using ton ? kilometre and passenger ? kilometre as units for measurement 货物(旅客)周转量：指在一定时期内，由各种运输工具运送的货物(旅客)数量与其相应运输距离的乘积之总和，是反映运输业生产总成果的重要指标，也是编制和检查运输生产计划，计算运输效率、劳动生产率以及核算运输单位成本的主要基础资料。
It is proposed that the fixed capacity investment and cargo discharge regression forecasting model and the optimal average information customer distribution model can be used to predict the cargo o - d distribution . the capacity limitation dynamic increment comprehensive network model can be applied to the prediction of the channel cargo transportation discharge and the turnover discharge in the main courses . the main courses network plan grade can be verified by the total cost method , and according to which the economic rationality of constructing different grade channels can be evaluated 本文开展了平原水网地区航道网规划方法的研究，提出了采用固定资产投资完成额与货运量回归预测模型；平均信息量用户最优分布模型预测货物o - d的分布；容量限制动态增量综合网络配流模型预测干线航道货物运输量和周转量；采用总费用法论证干线航道网规划等级，据此评定建设不同等级航道的经济合理性。
The third part includes chapter four and five , mainly deals with the problem of highway investment . the order of affected factors of highway investment is analyzed quantitatively by grey relational analysis ; the relations between highway investment and insustrial structure is discussed by using gm ( 1 , n ) modeljthe amount of highway investment and the structure of investment are described in detail ; the application of gm ( 1 , 1 ) model to fit the real value of investment and a forcast being made 一方面运用灰色理论中的灰关联分析对公路投资的诸影响因素进行定量分析，得出经济总量( gdp ) 、经济发展水平(人均gdp )及客货周转量是与公路投资关系较密切的因素；运用gm ( 1 ， n )模型，分析公路投资和产业结构间的关系。结论是第三产业对公路投资影响最大，其次是第二产业，这两者的影响都是正的，第一产业对公路投资的影响是负的。
After analyzing the situation and influences of river shipping in jiangsu province , with qualitative and quantitative analysis methods , this paper forecasts the following contents , including the whole cargo transportation lord , the cargo transportation volume , the main bulk cargo volume and the main waterway volume in jiangsu . the final result is the theory basis of jiangsu river shipping strategy research 本文通过对江苏省内河航运业发展的实际情况和影响因素分析，运用定性和定量的预测方法，对江苏省未来内河货运总量(货运量、货运周转量)发展趋势以及货流情况做出预测，为江苏省内河航运合理定位和发展战略的制定提供必要的数据和理论依据。
In this paper ， applying the system engineering theory and the method of quality and quantity we establish some forecast models of traffic freight quantity and turnover quantity in inner mongolia . by the models we also make some analysis for the traffic freight quantity and turnover quantity ， and predict their development trend and prospects 应用系统工程理论，用定性和定量相结合的方法，建立了内蒙古自治区交通运输货运量和货运周转量的预测模型.对货运量和货运周转量进行经济分析和讨论，预测其发展趋势并进行了前景分析
Chapter three selects some economical index which represents the situation of china communications and transportation ' s development , for example , turnover of freight traffic , turnover of freight traffic and output of communications and transportation , uses statistical graphs , charts or tables , multiple regression , exploratory analysis method etc . , and finds out the factors influencing china communications and transportation ' s development , based on the characteristics of china communications and transportation 第三章根据交通运输业特点，选择代表交通运输业发展状况的经济指标货物周转量、客运周转量以及交通运输业的产值等指标，分别运用统计图表、多元回归、探索性分析等方法，以期找出我国交通运输业发展的影响因素和发展趋势。
In 1990 ' s , the growing speed of passenger transport has surpassed that of cargo transport and become the trend of traffic industry development in the new period . there is an obvious digressive trend of waterway passenger transport volume and turnover volume because of the fierce competition between railway , road and aviation , and relative falling behind of waterway technology 进入90年代之后，旅客运输增长速度超过了货物运输，成为交通运输业在新时期的发展趋势，铁路、公路和航空的激烈竞争，加之水路客运技术状况的相对落后，使水路客运量和旅客周转量都出现明显下降的态势，水路客运面临新的机遇和挑战。
