This paper investigates multiple alternatives to predict environmental parameters (temperature and relative humidity) inside an intelligent container with the aim of the supervision of cool chains. A wireless sensor network will help us to measure those parameters in some distributed points of the closed space. To achieve the aim of fault detection and also total energy saving in the sensor net...

In Bierens (1987) a Granger causal relation was found between unemployment and the interest rate for the Netherlands. This phenomenon could be explained by the revenue maximization theory of Baumol (1959) augmented with a flexïble labour effort rate. This implies that fixed costs are important in determining the employment decisions of firms. In the present paper we will investigate whether the...

In this paper, the problem of estimating uncertainty regions for identified models is considered. A typical approach in this context is to resort to the asymptotic theory of Prediction Error Methods (PEM) for system identification, by means of which ellipsoidal uncertainty regions can be constructed for the uncertain parameters. We show that the uncertainty regions worked out through the asympt...

Particulate air pollution is associated with a range of effects on human health, including effects on the respiratory and cardiovascular systems, asthma and mortality. Hence, the development of an efficient forecasting and early warning system for providing air quality information towards the citizen becomes an obvious and imperative need. The objective of this work was to investigate that fore...

In this paper the techniques of evolutionary system identification are implemented in the parametric, time domain identification of a flexible robotic arm. More specifically, the (μ+λ) Evolution Strategy (ES) is used for the estimation of both ARMA and ARMAX models, by means of Prediction-Error method (PEM), capable to describe system’s dynamics in the absence or existence of an input data set,...

In this paper, we study a general class of causal processes with exogenous covariates, including many classical such as the ARMA-GARCH, APARCH, ARMAX, GARCH-X and APARCH-X processes. Under some Lipschitz-type conditions, existence τ-weakly dependent strictly stationary ergodic solution is established. We provide conditions for strong consistency derive asymptotic distribution quasi-maximum like...

In Bierens (1987) a Granger causal relation was found between unemployment and the interest rate for the Netherlands. In the present paper we will investigate whether there exists a simüar Granger causal relation between unemployment and interest rate for a number of other countries. It appears that, with our ARMAX modeling approach, this relationship is not confined to the Netherlands, but als...

This paper presents a unified framework for the analysis of several discrete time adaptive parameter estimation algorithms, including RML with nonvanishing stepsize, several ARMAX identifiers, the Landau-style output error algorithms, and certain others for which no stability proof has yet appeared. A general algorithmic form is defined, incorporating a linear time-varying regressor '. filter a...