This paper derives a Cobb-Douglas matching function as the aggregate of the number of matches made by each firm in a large economy using results from the theory of heavy tail distributions. The model is then calibrated using the empirical distribution of firm sizes and stylized facts about social networks.The implied elasticity of the matching function is found to be close to those reported by ...

Charles Cobb and Paul Douglas in 1928 used data from the US manufacturing sector for 1899-1922 to introduce what is known today as Cobb-Douglas production function that has been widely economic theory decades. We employ R programming language fit formulas parameters of generated by authors recently via bi-Hamiltonian approach same set utilized Douglas. conclude output elasticities total factor ...

Nowadays, container terminals are subject to extensive technological changes and specific transformations. Changes applied tend increase their ability offer high- end personalized services the customers finally affect competitiveness. The estimation of efficiency corresponds terminals’ production with a level inputs has been topic many studies, especially those conducted on wider regional or gl...

Despite remaining the most important type of animal production, pig production in Poland and Hungary declined after their accession to European Union (EU) 2004. This paper investigated evolution technical efficiency pork industry both countries. We applied stochastic frontier analysis, which takes into account heterogeneity environment functions countries—true random effects, a metafrontier mod...

The aim of this research was to study the energy flow and the modelling of energy use in broiler production in the Guilan Province of Iran. The data were gathered through interview with 25 broiler farm managers out of a total of 146 broiler producers in Rasht, the center of Guilan Province, Iran. The effect of broiler farm size at three levels—small (˂20,000 birds), medium (20,000–30,000 birds)...

this study carried out for economic investigation on laying hen farms in tehran province. the data was collected through completion of questionnaire by direct interview from 41 layer farms, which were selected by stratified random sampling method in 2013. among all types of production functions, the cobb-douglas production function was selected and its coefficients was estimated and average pro...

The purpose of this study was to determine the push and pull factors promoting agroforestry tree crop depletion on rural household in Delta State. A multistage sampling technique was used. The sample size for the study was 120 farmers. The instrument for data collection was questionnaire. The data collected were analyzed with descriptive statistics such as chart, means derived from 5-point like...

This paper presents a performance evaluation of European airports, based on the application both parametric and non-parametric approaches. We have evaluated 115 busiest airports in Europe according to number passengers checked-in 2018. The four inputs we used were Terminals, Runways, Boarding gates, Aircraft stands. Three variables describe outputs, namely, Passengers, Movements, Cargo. method ...