We examine the estimation problem for shape-restricted functions that are continuous, non-negative, monotone non-decreasing, and strictly concave. A sieve estimator based on bivariate Bernstein polynomials is proposed. This estimator is drawn from a sieve, a set of shape-restricted Bernstein...

A lot of regional studies cover classification of territorial units due to considering research problem. This approach examines territorial diversification of a phenomena, as well as spatial interactions. The occurrence of spatial dependence can reveal the processes of creating or extanding...

A lot of regional studies cover classification of territorial units due to considering research problem. This approach examines territorial diversification of a phenomena, as well as spatial interactions. The occurrence of spatial dependence can reveal the processes of creating or extanding...

In this paper we present a new approach to integration and cointegration. We show that a periodically correlated time series can be divided in a natural way into subseries that are integrated. Moreover, with high probability they are cointegrated. Therefore it is enough to show periodic...

The econometric literature offers various modeling approaches for analyzing micro data in combination with time series of aggregate data. This paper discusses the estimation of a VAR model that allows unobserved heterogeneity across observation unit, as well as unobserved time-specific...

Celem opracowania jest analiza zasadnosci wykorzystania metody Valua at Risk w szacowaniu ryzyka zwiazanego z inwestycja w spolki branzy metalurgicznej. W artykule przedstawiono sposob konstruowania modelu, rozne metody jego estymacji oraz ich wady i zalety. W czesci badawczej artykulu...

The paper presents empirical results on the discounting of delayed payoffs which show that: (1) the best approximation of the discounting process is a hyperbolic function, (2) (both animals and humans) can reverse their preferences in time. The article presents theoretical conditions on the...

Celem artykulu jest analiza pozycji konkurencyjnej najwiekszych przedsiebiorstw branzy budowlanej z wojewodztwa podlaskiego, na tle sektora w latach 2010 - 2012. Do analizy wykorzystany zostal tzw. Radar Nagashimy, pozwalajacy okreslic w sposob syntetyczny wzgledne ksztaltowanie sie wybranego...

Od czasu tzw. banki internetowej, ktora miala miejsce na przelomie XX i XXI wieku, na globalnym rynku kapitalowym, w tym rowniez w Polsce, odnotowac mozna rosnace zainteresowanie spolkami stawiajacymi na innowacje i innowacyjnosc. Glownym motorem tego zainteresowania jest przekonanie, ze w...