We propose and develop mean-variance-ratio (MVR) statistics for comparing the performance of prospects (e.g., investment portfolios, assets, etc.) after the effect of the background risk has been mitigated. We investigate the performance of the statistics in large and small samples and show that...

Predators may either learn to avoid aposematic prey or may avoid it because of an innate bias. Learned as well as innate avoidance has been observed in birds, but the existing evidence is based on experiments with rather few unrelated model species. We compared the origin of avoidance in...

The prevalent, and so far most explored, host defense against brood parasitism is egg discrimination. Not only do the hosts differ markedly in their propensity to reject parasitic eggs but rejecters even vary in their egg rejection times. The focus of the present study was to investigate factors...

This paper analyzes the propagation of monetary policy shocks through the creation of credit in an economy. Models of the monetary transmission mechanism typically feature responses that last for a few quarters contrary to what the empirical evidence suggests. To propagate the impact of monetary...

An increasing variety of data frequencies available in economics, finance, etc. gives rise to a question how to build and estimate a regression model with variables observed at different frequencies. In a unifying framework of ("m,d")-aggregation we consider various approaches by discussing some...

We analyse the effects of different types and concentration of ownership on performance using a large population of firms in the Czech Republic after mass privatization. Specifications based on first-differences combined with instrumental variables show that the performance effects of different...

This article aims to emphasis the importance of dashboard in monitoring and measuring the performances of entities within mining extractive industry of Romania. Having regard to the stage of the researches carried out in the specialty literature regarding the implementation of ABC method to the...

This paper presents a model of the results account specific for the method of Activity Based Costing (ABC), starting from its definition, component and typology. There are also described the defining elements of the results account in its quality of instrument of measuring and monitoring the...

This article highlights the analysis and implementation stages of the ABC method in small and medium sized enterprises in Romania. It presents the historical development of the ABC method and its implementation issues identified in the economic entities. It stresses the importance of the ABC...