Supermarkets are currently gaining ground in the agri-food systems of many developing countries. While recent research has analyzed income effects in the small farm sector, impacts on farming efficiency have hardly been studied. Productivity effects in previous studies are also estimated with...

‘Productivity and efficiency growth enhances competitiveness’. Similarly formulatedstatements are common in the literature on the economic performance of firms,industries and nations. This conventional perception in the economic literature,originating from trade and growth theory models,...

Even after more than 15 years of transition from plan to market, agriculture in Ukraine still faces many challenges in terms of its structure. The evidence in the literature points to significant heterogeneity of technical efficiency and productivity scores in Ukraine. Moreover, both the...

‘Productivity and efficiency growth enhances competitiveness’. Similarly formulated statements are common in the literature on the economic performance of firms, industries and nations. This conventional perception in the economic literature, originating from trade and growth theory models,...

Since the seminal work of Adam Smith, markets have been considered an efficienttool for co-ordinating the behaviour of economic agents. The basic characteristicof a market economy is that the complex system of interaction amongindividuals is not centrally coordinated. Under the assumption of...

Recently gravity trade models are applied to disaggregated trade data. Here many zeros arecharacteristic. In the presence of excess zeros usual Poisson Pseudo Maximum Likelihood(PPML) is still consistent, the variance covariance matrix however is invalid. Correcteconomic interpretation however...

The stickiness of prices and reasons for price changes are widely discussed in market analyses and marketing theory. Explanations and reasons of rigidities have shown that prices do not change as often in small retail stores and in markets with high concentration (Powers and Powers 2001, Hannan...

Recently gravity trade models are applied to disaggregated trade data. Here many zeros are characteristic. In the presence of excess zeros usual Poisson Pseudo Maximum Likelihood (PPML) is still consistent, the variance covariance matrix however is invalid. Correct economic interpretation...

Since the seminal work of Adam Smith, markets have been considered an efficient tool for co-ordinating the behaviour of economic agents. The basic characteristic of a market economy is that the complex system of interaction among individuals is not centrally coordinated. Under the assumption of...