1,721,096 research outputs found
Prodotti della reazione di Maillard e ossidazione dei lipidi: studio su sistemi lipidici modello e su sistemi reali
No full textA Universal Kriging predictor for spatially dependent functional data of a Hilbert Space
Full text linkWe address the problem of predicting spatially dependent functional data belonging to a Hilbert space, with a Functional Data Analysis approach. Having defined new global measures of spatial variability for functional random processes, we derive a Universal Kriging predictor for functional data. Consistently with the new established theoretical results, we develop a two-step procedure for predicting georeferenced functional data: first model selection and estimation of the spatial mean (drift), then Universal Kriging prediction on the basis of the identified model. The proposed methodology is applied to daily mean temperatures curves recorded in the Maritimes Provinces of Canada
La cottura degli alimenti in olio (frittura). 2 - Modificazioni chimiche e chimico-fisiche a carico dell'olio
No full textPrediction of non-stationary functional data: Universal Kriging in a Hilbert space
No full textIn an increasing number of studies, collected data are curves; when functional data are spatially dependent, the problem of prediction assumes a key role. In this work we deal with spatially distributed functional data proposing an extension of some geostatistical tools to non-stationary functional random fields, with a Functional Data Analysis approach. An extension of the Universal Kriging method to elements of a Hilbert space is proposed, in a coherent frame of definitions and assumptions.
Consistently with these new theoretical results, a method for prediction of non-stationary spatial dependent functional data is proposed and then developed in three steps: model selection for the drift term, decomposition of the original process into a deterministic term (the drift) and a residual stochastic process, Universal Kriging prediction.
The proposed procedure is applied to daily mean temperatures curves observed in 35 meteorological stations located in Canada's Maritimes Provinces
Monitoraggio per via gascromatografica dello sviluppo fungino in prootti carnei
No full textFungal growth of inoculated samples of cured ham during storage at different temperatures was monitored by means the ethanol developing into the samples' headspace vapor. Showing the growth of the inoculated mould (Penicillium expansum) the most detectable alteration, the limit of acceptability of the samples of cured ham was evaluated choosing an arbitrary threshold of the ethanol developed
Frying performances of vegetable oils and their influence on the sensorial properties of some foods
No full textData Reduction by means of Principal Differential Analysis: an Application to the Study of the Geometrical Features of the Internal Carotid Artery
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