范围经济研究综述

对范围经济的概念、来源及范围经济计量模型领域的文献进行了较为系统的梳理,为以后学者对范围经济的实证研究以及模型与理论的创新提供参考。范围经济是企业或生产单位在已有的资源基础上,以联合或协同生产经营的方式提供产品或服务,使收益或运营效率提高的现象。其实质是产品边界扩大时边际成本降低,边际收益上升。范围经济主要应用在企业纵向一体化、企业多样化经营、产品成本互补、品牌效应以及共用销售渠道等策略中。范围经济的计量方法有参数估计、非参数估计2种方法,在多投入与多产出的情况下,非参数法估计要比参数法更准确。在参数估计时,主要采用超越对数成本函数、广义超越对数函数、复合成本函数、二次成本函数;在非参数估计方面,主要利用DEA、线性规划法。

REVIEW OF SCOPE ECONOMY RESEARCH

This paper reviews references regarding the concept, source and measurement model of scope economy, and presents references for case study and theoretical and model innovation. Scope economy refers to enterprises, based on their existing resources, which provide products or services through cooperation or synergism to increase their operating efficiency or benefits. It in practice is to enlarge product margin while to reduce its cost, a rising marginal benefit. Scope economy is mainly used in enterprises vertical integration, diversified operations, products cost complementation, brand effect and mutual sales channels. Scope economy model can be measured through parameters or non parameters. In the case of multi input and output, non parameter measurement is more accurate than parameters measurement. Parameters measurement uses transcendental logarithmic cost function, generalized transcendental logarithmic cost function, composite cost function and quadratic cost function. Non parameter measurement uses DEA and linear planning.