Graphene Nanoribbons: Geometric, Electronic, and Magnetic Properties

Abstract

Estimates of the average technical efficiency on the 2-digit industry-level for France (1962) are obtained by means of a maximum likelihood estimation of the Cobb-Douglas frontier production model with composed error. The theoretical and statistical implications of a possible relationship between technical efficiency and firm-size are discussed. The computations are carried out for each industry as a whole and the results are compared with the respective results for separate size-classes. © 1977 Physica-Verlag Rudolf Liebing GmbH + Co.