This article challenges recent research (Evans, 2008) reporting that the concentration of cited scientific literature increases with the online availability of articles and journals. Using Thomson Reuters’ Web of Science, the present article analyses changes in the concentration of citations received (2and 5-year citation windows) by papers published between 1900 and 2005.Three measures of conc...

In 1992, the U.S. Federal Energy Regulatory Commission created a secondary market for natural gas transportation whereby shippers holding firm transportation capacity on interstate natural gas pipelines can compete with the pipeline in the provision of transportation services. However, if a shipper does not use some of its contracted firm transportation capacity, the pipeline can resell that ca...

The main objective of this paper is to introduce an Allen-type index differentiation based on cost functions. With index, we create economic measure product that quantifies differences between products. Applied research has some generally accepted measures, for example, the Herfindahl–Hirschman Index market concentration, or Gini coefficient inequality. Product differentiation, however, does no...

This paper challenges recent research (Evans, 2008) reporting that the concentration of cited scientific literature increases with the online availability of articles and journals. Using Thomson Reuters’ Web of Science, the present paper analyses changes in the concentration of citations received (twoand five-year citation windows) by papers published between 1900 and 2005. Three measures of co...

The monopoly power in the duck egg and meat market structure in Tamil Nadu, the fourth largest duck raising zone of India was analysed by means of Concentration Ratio (CR) and Hirschman-Herfindahl Index (H index) and in the absence of monopoly, Bain’s classification was used to identify the prevailing structure of market. Five channels were identified to market eggs, while three for duck meat. ...

In this article, we examine the market structure for real estate brokerage services across six large metropolitan statistical areas (MSAs) to see whether low-income neighborhoods, or neighborhoods where house prices are low, are as well served by real estate professionals as higher income or higher priced neighborhoods. We collect more than 300,000 real estate listings and compute the Herfindah...

In the Western world, consumers complain about the soaring of non-interest bank fees during the recent years, the post global financial crisis in particular. Commercial banks charge a variety of non-interest fees for their transactions. This paper empirically tests whether the free charges are significantly different between conventional commercial banks and interest free Islamic banks. The ave...

This paper explores the effect of competition on prices and frequencies for Interurban rail market in Europe. Intramodal is assessed by Herfindahl-Hirschman Index (HHI). Intermodal takes into account new types service such as coach carpooling services. The originality analysis stems from method database used. results show that intra-modal has a significant impact but not economy class because o...