We provide an extensive and general investigation of the effects on industry performance (profits and social welfare) of exogenously changing the number of firms in a Cournot framework. This amounts to an in-depth exploration of the well-known trade-off between competition and production efficiency. We establish that under scale economies, welfare is maximized by a finite number of firms. Our r...

This article aimed to test the general hypothesis that guidelines create uniformity, or reduce variation, in medical practice. Medical practice variation has policy interest and is one of the reasons for developing guidelines. The development and implementation of guidelines was considered in the broader context of processes of rationalization. We focused on the influence of voluntary guideline...

Market concentration ratios are popular statistics for characterizing the extent of market dominance in an imperfectly competitive market, but these ratios may not agree when comparing two markets. Neither do they necessarily agree with the Herfindahl-Hirschman or entropy indices. This letter compares two Cournot oligopoly markets in which firms have constant unit costs. It is shown that the ma...

In the last 10 years, Russian market of healthy food has been rapidly gaining momentum. 2012-2021, volume retail sales in products increased by more than 2 times. this article, purpose study is to assess competition segments ("Better for You", "Fortified/Functional", "Free from", "Naturally Healthy" and "Organic") as a whole 2012–2021. Retail volumes (in million rubles) are taken data both dome...

Abstract The purpose of this study is to analyze the market structure general insurance industry in Indonesia and effect share, operating expenses income (OEOI), debt ratio(DR) on profitability measured by return assets (ROA). This uses panel data regression analysis with Chow Hausman test determine best model. a combination cross-section data, which consists 11 companies, time-series five year...

The purpose of this study is to investigate the causal relationship between the structure and performance in the banking industry of Iran. In doing so, the data and information of public and private banks from 1996 to 2015 is examined using Toda-Yamamoto causality test (TY) and Autoregressive Distributed Lag (ARDL) approach. Herfindahl-Hirschman index (HHI) (the degree of market concentration) ...

We present some evidence from the U.S. Census about the market concentration in the home appliances sector (e.g., four-firm concentration ratio and Herfindahl-Hirshman index) which suggests that competition in this sector, rather than being perfect, is better described by an oligopoly structure. We develop a general equilibrium three-sector growth model (home, market, appliances) where the pric...

background: despite the enhancement in health outcomes worldwide, health inequity and inequality is one of the most relevant topics both for health policy and public health. this research was designed to decompose the health inequality of people living in shiraz, south-west iran. methods: data were obtained from a multistage-sample survey conducted in shiraz from april to may 2012, to find dete...

The growing interest in a healthy lifestyle among Russian consumers leads to an increase demand for food products and beverages, which is reflected the rather high growth rates of this market its increased attractiveness manufacturing companies. In article, purpose study assess dynamics level competition segments drinks (“Better You”, “Fortified/Functional”, “Naturally healthy” “Organic”) throu...

Purpose While existing research explores the impact of audit market competition on fees and quality, there is limited investigation into how in influences auditors' writing style. This study examines relationship between readability reports Iran, where particularly intense, especially among private firms. Design/methodology/approach The sample comprises 1,050 firm-year observations Iran from 20...