Several studies have characterized the relation between discretionary accruals and earnings before-taxes to test for the existence of earnings smoothing behaviors. In this paper, we argue that the characteristic response of accruals to earnings is not linear, as the literature has shown....

This paper compares the effects of unitary and ad valorem taxes in a homogeneous good market where two technologies are freely available. We find that, both in monopolies and Cournot oligopolies, unit taxes may be welfare superior to ad valorem taxes.

The rise of oil prices is a main issue in contemporary economics. This study examines the monthly, weekly and daily structure in several oil prices series using a modeling approach based on fractional integration and long range dependence. The results indicate that oil prices series are highly...

In this paper, I study the international transmission of shocks when assets traded across borders are differently suitable as collateral for borrowing (i.e., pledgeability). Under financial integration, differences in pledgeability have implications for the demand for assets. For instance, if a...

Given the economic and commercial implications of sports, the media value of players and teams is considered a major asset in professional sports businesses. This paper aims to assess the economic value of intangible assets in the tennis industry. In order to rank the media value of professional...

This paper analyses airline accidents data from 1927-2006. The fractional integration methodology is adopted. It is shown that airline accidents are persistent and (fractionally) cointegrated with airline traffic. Thus, there exists an equilibrium relation between air accidents and airline...

This paper examines a version of the tests of Robinson (1994) that enables one to test models of the form (1-Lk)dxt = ut, where k is an integer value, d may be any real number, and ut is I(0). The most common cases are those with k = 1 (unit or fractional roots) and k = 4 and 12 (seasonal unit...

This paper deals with the presence of long range dependence at the long run and the cyclical frequencies in macroeconomic time series. We use a procedure that allows us to test unit roots with fractional orders of integration in raw time series. The tests are applied to an extended version of...

This paper deals with the analysis of structural breaks in the context of fractionally integrated models. We assume that the break dates are unknown and that the different sub-samples possess different intercepts, slope coefficients and fractional orders of integration. The procedure is based on...

This paper proposes a model of the US unemployment rate which accounts for both its asymmetry and its long memory. Our approach introduces fractional integration and nonlinearities simultaneously into the same framework, using a Lagrange Multiplier procedure with a standard null limit...