Evaluation Of Value-added Efficiency Of China's Listed Port Enterprises Based On Network DEA

As an important hub of the global trade and transportation network,ports have become increasingly' prominent.China's port industry has grown rapidly with the encouragement and support of national policies.The cargo throughput has continued to increase,and the scale of ports has continued to expand.It has become the gateway' for China's opening up and development and an important support for the development of the national economy.Although China's port industry already has a certain degree of international competitiveness,its overall value-added ability is weak,and there is a gap in economic benefits compared with influential global ports.Facing the problem of transforming the advantages of existing port production scale into actual economic profitability,the evaluation of value-added efficiency of ports' with the core goal of improving profitability is a key issue urgently needed to be studied in Chinese port industry.Therefore,based on the value management theory and efficiency theory,this article explores the concept of value-added efficiency of port enterprises.After analyzing the productivity and value influencing factors and the value-added realization mechanism of"production operation&value transformation",the evaluation index system for the value-added efficiency of Chinese listed port enterprises has been established,which takes the number of berths,cranes and employees as the total input index and the input index of the production operation stage;container throughput as the intermediate' index;the main business revenue and net profit as the total output index and the output index of the value transformation stage.A two-stage associated network DEA model has been constructed to measure the total value-added efficiency,production operation efficiency,and value transformation efficiency of 12 listed port enterprises over a five-year period,and the frontiers of production have been derived to obtain an improvement path for invalid decision making units.Based on the empirical results,the main problems of Chinese port enterprises in terams of production and operation,value transformation,and value-added are discussed.In combination with the current status and advanced experience of the port industry,measures are proposed to improve the value-added efficiency of Chinese port enterprises.Research shows that the value-added efficiency of Chinese listed port enterprises is always at a low level,the production operation efficiency is generally higher,which indicates that the ports are in the homogeneous competition with no difference in the allocation capacity of production resource.The value transformation efficiency is low and the value transformation stage is the key that affects the value-added efficiency of port enterprises,so Chinese port enterprises should focus on value management to improve value-added efficiency.This research breaks through the existing evaluation of port efficiency as a whole,combines the actual characteristics of value activities in the port operation process,and realizes the staged evaluation of the value-added efficiency of port enterprises,enriching and improving the port value management theory research system and value-added efficiency evaluation method system,which provides ideas and references for future research.It improves the traditional DEA model,adopts the two-stage association network DEA evaluation model to realize the overall and sub-process efficiency evaluation,and explores a new model suitable for the port company's staged efficiency evaluation,which can be applied to the value-added efficiency evaluation process of port enterprises,in order to better monitor the overall and each link operation of the enterprise,providing a reference for development strategy decisions.The evaluation results show the current value-added status of Chinese port enterprises,and find out the improvement paths of invalid ports,which provide decision-making basis for each port enterprise to optimize the ratio of resource input and upgrade the value output structure,provide support for the formulation of national strategies and policies,and enhance the profitability of port enterprises to realize value optimization and creation.