Evaluation Energy Efficiency Of Airlines Based On Virtual Frontier SBM

In recent years,with the rapid development of the world economy and the improvement of the consumption level of residents,the gap between energy demand and supply is gradually widening.Improving efficiency is an important way to solve the contradiction between huge energy demand and limited energy production.Firstly,this paper expounds the importance of energy efficiency of airlines.Secondly,several common methods of data envelopment analysis are introduced.The virtual frontier model is improved by ordinary model.Then,in the empirical analysis,as the research object,the 13 international airlines in 2011-2015 years,use an improved method of virtual frontier SBM,by selecting the number of employees and aviation kerosene as input,total revenue,revenue passenger kilometers,revenue ton kilometers as the output of the virtual frontier model of energy efficiency of airlines to get the energy efficiency value and comprehensive ranking of airlines.Finally,the two stage regression model is used to analyze the influencing factors,and the factors which have significant influence on energy efficiency are analyzed.And then put forward the corresponding countermeasures to improve the energy efficiency.The results show that:(1)Energy efficiency ranking is:Cathay Pacific Airways,Delta Airlines,Korean Airlines,Singapore Airlines,Emirates Airlines,China Eastern Airlines,All Nippon Airlines,China Southern Airlines,Lufthansa Airlines,Qantas Airways,Air France KLM,Air China,and Air Canada.Cathay Pacific has the highest energy efficiency,which is related to the improvement of energy efficiency.The top three energy efficiency value of the airlines,in addition to 2012,Delta Airlines efficiency value has increased every year.It seems that Delta Airlines can take effective measures to improve energy efficiency.Of the three airlines in china,Eastern Airlines ranked first,because the Eastern Airlines take measures to install wings,and refit engine to save fuel.(2)The type of airline has no significant impact on the airline's energy efficiency,GDP per capital,fleet average service age and average distance has a significant impact on energy efficiency.The number of aircraft types accounted for the proportion of all has no significant effect on the energy efficiency of airlines,which means that the airline's energy efficiency has nothing to do with it whether it is a low-cost airline or a full-service airline.The per capital GDP has negative influence on the efficiency of airlines.Fleet average service age and average distance has a positive effect on energy efficiency.