The efficiency of communication depends on the ability of conspecifics to recognize and locate each other, and the environment can impose important limitations on reliability of transmitted and received information. In contrast to the 3D space of airborne sound communication, substrate-borne...

<heading format="display" id="h1" implicit="yes" level="1">Abstract</heading> Firm productivity and export decisions are closely related to innovation activity. Innovation may play a more important role in the decision to start exporting, and successful exporting may drive process innovation. This suggests that the causality between innovation and exporting may...

We consider classification of the realization of a multivariate spatial-temporal Gaussian random field into one of two populations with different regression mean models and factorized covariance matrices. Unknown means and common feature vector covariance matrix are estimated from training...

Since the early 1990s, due to increasing immigration to the Czech Republic, a middleman system has been established in order to organise (irregular) labour of migrants mostly from Ukraine. Due to its extent, the breadth of activities involved and interconnection with Mafia structures, this...

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...

This paper offers a new method for estimation and forecasting of the volatility of financial time series when the stationarity assumption is violated. Our general, local parametric approach particularly applies to general varying-coefficient parametric models, such as GARCH, whose coefficients...