1,721,319 research outputs found
A Moving Horizon Based Approach for Real Time Flood Forecasting
No full textThe distinction between off-line(nonrecursive) and on-line(recursive) methods is not as rigid as it might seem.
The work of Kalman provided a recursive solution to the minimum variance estimation problem for linear systems with Gaussian variables. The Kalman filter and its equivalence to least-squares is known and the moving horizon approach is formulated as a particular case of both of the methods.
The incorporation of prior knowledge of the unknown variable ranges as inequality constraints is discussed.
A real time flood forecasting application of the approach is shown and the relevance of the horizon-size is discussed
The Italians' attitude towards foreign immigration: an attempt at interpretation
No full textScope of the survey is evaluating the differential attitude of the Italian towards foreing immigration in an uerban context. Via a LISREL model two component clearly appear: a component that stands for the ethnic prejudice, a component inherent to a will of discrimination
Application of a model for flood forecasting
No full textThe city of Pavia can be inundated by Ticino floods or, more often, by Po backwaters, since Pavia is located not far away from the confluence of the two rivers. A real-time forecasting system has been set up to forecast with a reasonable time advance possible floods. The system is based on data gathered from a monitoring network. A statistical simulation model, whose structure step-by-step linearizes the equations of the hydraulic process, forecasts flood levels in Pavia. The parameters of the model are estimated and updated every hour through a recursive procedure. The model gives the water stages of Ticino in Pavia with a lead time that equals the transfer time of the flood waves
La déviance sociale des étrangers: problèmes d'évaluation et d'interprétation
No full textIl contributo affronta il tema della valutazione della devianza degli stranieri nel nostro paese. Dopo aver richiamato le principali teorie che cercano di interpretare il fenomeno della devianza straniera in un paese di accoglimento si sviluppa un'analisi multidimensionale per interpretare l'associazione tra profili della devianza e collettività
The foreign social deviance: problems of measurement and interpretation
No full textEven in case of a certain wealth of sources, as in Italy, it is not possible to make a clear picture of the comparison between foreign and native deviation. The analysis for type of crime made possible to detect a specific propensity of communities toward specific crimes
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