We consider the problem of the estimation of the mean squared error (MSE) of some domain mean predictor for Fay‑Herriot model. In the simulation study we analyze properties of eight MSE estimators including estimators ...

The insurance system is a very important element of the financial system of a state. As institutions of public trust, insurance companies play an important role in the process of transforming savings into investments, which ...

The paper aims to analyse the trends in mortality of men and women aged 65 and more in the Lodz region in the period 1999–2013, with particular emphasis on the phenomenon of excess male mortality. A complete database of ...

Decision‑making process is an individual matter for each investor and the strategy they choose, reflects the level of accepted risk. Nevertheless, any investor wants to minimize huge losses while maximizing profits. As far ...

The basic goal of the article is analyse the current regulations about credit rating agency and their activity in European Union and United States and answer the question which one the issuer or investor paid credit rating ...

 Risk analysis in the financial market requires the correct evaluation of volatility in terms of both prices and asset returns. Disturbances in quality of information, the economic and political situation and investment ...

In this paper, some aspects of design optimality on the basis of spring balance weighing designs are considered. The properties of D‑optimal and D‑efficiency designs are studied. The necessary and sufficient conditions ...

Diseases of affluence (diseases of the twenty‑first century, Western diseases) by definition should have higher prevalence and/or mortality rates in richer and more developed countries than in poorer, underdeveloped states. ...

Due to the rapid growth of significance of sustainable development in recent years, there have been many ideas regarding the practical application of environmental and social concepts in business management. Many of these ...

The main aim of the article was to analyse the changes in the Polish population structure observed since the political transformation and expected in the next few years. The analysis focused also on the spatial differentiation ...