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航空货运收益管理与流程优化问题研究
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摘要
随着全球一体化进程的发展和国际贸易的快速增长,我国航空货运已经迈入蓬勃发展的新阶段。在国家“天空开放”浪潮的推动下,我国航空公司的货运面临着巨大的发展机遇,同时也面临了严峻的挑战。如何提高航空货运的收益管理水平成为我国航空公司迫切需要解决的首要问题。为了提高我国航空公司货运的服务质量和竞争力,本文从目前我国航空货运管理中存在的主要问题出发,结合我国航空货运发展的实际情况展开航空货运收益管理研究。又因为航空货运流程是影响货运收益的重要因素之一,所以最后专门论述货运流程优化设计的方法。全文的主要内容如下:
     在航空货运顾客需求分析方面,本文从顾客角度研究了航空货运的顾客价值特性,提出了航空货运顾客价值的决定因素与动态性变化的理论模型,运用结构方程方法对其检验,结果表明了时间因素和便捷性因素是影响货运顾客价值的首要要素,价格因素已退之其次,并且来自竞争者、服务商、顾客和宏观环境的变化都对顾客价值动态性变化有显著影响。本文又从企业、竞争者和顾客三个方面分析了航空货运顾客需求变化的原因,并据此构建顾客需求问题目标求解过程知识的语义模型,以及建立基于“规则+案例”的顾客需求知识模型,便于航空公司动态掌握顾客需求的变化。
     在航空货运产品创新方面,本文分析了我国航空货运产品的现状,发现航空货运产品品种单一。本文将货运产品服务内容划分为不同层次,采用总线模块化方法对航空货运产品进行创新。
     在航空货运定价方面,本文在考虑时间和价格是影响顾客价值的关键因素基础上,提出了以多种交货期为基础的等级价格体系,并有交货期承诺价格折扣机制,建立了与交货期时间相关的定价模型,通过算例探讨了模型参数对最优价格决策的影响,并能为本文提出的货运创新产品价格决策提供有益的参考。
     在超售方面,本文提出了一种以航空公司的利润最大化为目标,同时考虑货运重量和体积二个维度的超售模型,由模型得出最优的超售水平与货物的Show-Up率相关,与订舱请求水平无关,因而该模型简单易行,便于航空公司在实践中运用。
     在舱位控制方面,本文从长期和短期两个方面研究了舱位分配控制问题,首先研究了长期舱位销售合同对航空公司货运收益的影响,建立了舱位分配的数学模型,采用随机机会约束规划方法对其求解,确定了航空公司长期舱位分配的策略,并通过算例分析,表明了航空公司通过签订长期舱位销售合同,可以掌握更为准确的需求信息。在短期舱位控制方面,采用动态规划方法建立了单航段条件下的货运舱位动态控制的模型,研究了航空货运舱位动态优化控制的策略。
     在货物运输路线方面,本文提出了一种基于Multi-Agent的航空货运路线模型和以期望净收入最优为目标的路线选择算法,通过算例说明了该模型算法简单且具有增量性。
     在航空货运流程优化方面,本文应用六西格玛管理方法进行货运流程优化设计,研究了过程能力指数与合格率之间的关系,以及西格玛水平与过程能力指数之间的关系,以流程的操作时间为货运流程的绩效评价标准,建立了货运流程能力分配设计的数学模型,通过算例说明了模型的拉格朗日求解方法。
With development of global economic integration and international trade, China air cargo entered into a new stage of dramatic development. Under Chinese policy of“open sky”, Chinese airlines have been faced with tremendous development opportunities and challenges at the same time. How to improve air cargo revenue management level becomes the most important question for the civil aviation enterprises. In order to improve China air cargo service quality and increase air cargo revenue and strengthen competition advantage, this article studies China air cargo revenue management according to the airlines’fact and key problems of China air cargo management. The article specially studies the problem of air cargo process optimization at last. The main contents of the article are as follows:
     In the analysis of air cargo customer demand, the article studies the characteristics of air cargo customer value based on customer perspective, and develops the theoretical model for deciding factors of customer value and its dynamic changes, using the structural equation model to examine it, the result shows that the factors of time and convenience are the core factors influencing air cargo customer value, and the factor of price has already become secondary, and the changes in competitor, service provider, customer and macro-environment all have remarkable effects on the dynamics of customer value. The article also analyzes the reasons of customer’s demand change based on enterprises, competitors and customers three aspects, and develops knowledge of the seek process of customer’s demand goal, and establishes customer’s demand knowledge expression pattern based on“Rule+Case”, which can catch dynamically customer demand.
     The article analyzes the state of air cargo product, and finds that China air cargo products were simplex and the degree of product innovation was low-level, and combines buses modularization method with product innovation, dividing air cargo service into hiberarchy.
     In the air cargo pricing system, the article puts forward the rank lead time-contingent pricing system and the price discount mechanism to pledge lead-time, which is found that time and price is key point of affecting the degree of customer value. It has established lead time-contingent pricing model and discount model. Through numerical example, the article discusses the impact of parameters in the model on optimal pricing decision. The results have special referece to decision-making of pricing for the third chapter suggested new air cargo products.
     A two-dimensional (weight and volume) cargo overbooking model was developed with profit maximization as the objective. And the result of the model indicated that the optimal overbooking level is related to show-up rate greatly rather than booking requests. It was proved that the model is efficient and easy to be put into practice.
     Cargo slot inventory control was studied from long term and short term. The article studies the effect of long-term contract on airlines cargo yield, develops a chance-constrained programming model with a profit maximization objective, which can control airlines slot allotment. Afterwards, a numerical example is given to illustrate the application of the proposed model, which shows that airlines obtain more accurate demand information. At last the article establishes a discrete-time dynamic programming model for air cargo short-term slot optimal control with a single-leg, and puts forward the optimal control policy of air cargo slot.
     An air cargo routiong model on Mulit-Agent and the algorithm of routing choice aimed at maximum expected net revenue was developed, based on the characteristics of air cargo slot. A numerical example is given to show that the model is simple and incremental.
     Six Sigma Management was applied to cargo process optimaization and design, and the artilce studies the relationship of six sigma level, process capability indices and qualified rate, develops the mathematical model of six sigma process ability assignment based on lowest time cost, and the method of Lagrange was used to solve the model. The model was tested with an example.
引文
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