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Composite indicators play an essential role for benchmarking higher education institutions. One of the main sources of uncertainty building composite indicators and, undoubtedly, the most debated problem in building composite indicators is the weighting schemes (assigning weights to the simple indicators or subindicators) together with the aggregation(More)
This paper presents two main results on partially observable (PO) stochastic systems. In the first one, we consider a general P O system on Bore1 spaces, with possibly unbounded cost-per-stage functions, and give conditions for the existence of a-discount optimal control policies (0 < a < 1). In the second result we specialize (*) to additive-noise systems(More)
Partial least squares regression (PLS) is a linear regression technique developed to relate many regressors to one or several response variables. Robust methods are introduced to reduce or remove the effect of outlying data points. In this paper we show that if the sample covariance matrix is properly robustified further robustification of the linear(More)
The allergenic capacity of Olea europaea L. pollen is very important in several cities of the southern Iberian Peninsula, producing most pollinoses diagnosed in these cities. We have carried out a study on the annual, daily and diurnal variations in pollen from O. europaea in the atmosphere of Granada (Spain) during 4 consecutive years. Samplings were(More)
A finite horizon insurance model is studied where the risk/reserve process can be controlled by reinsurance and investment in the financial market. Our setting is innovative in the sense that we describe in a unified way the timing of the events, that is the arrivals of claims and the changes of the prices in the financial market, by means of a(More)
The pharmacological evaluation of N-guanyl-cysteine (IQB-782) is reported. This new cysteine derivative shows a potent mucolytic-expectorant activity in different test systems. Thus, IQB-782 protects rats against tobacco-smoke-induced respiratory airway obstruction, increases the tracheo-bronchial mucus secretion in rabbits and increases the pulmonary(More)
This paper deals with the optimal quadratic control problem for non-Gaussian discrete-time stochastic systems. Our main result gives explicit solutions for the optimal quadratic control problem for partially observable dynamic linear systems with asymmetric observation errors. For this purpose an asymmetric version of the Kalman filter based on asymmetric(More)