Using a precipitation nowcasting algorithm and 3DVAR assimilation in a cloud resolving Numerical Weather Prediction system to enhance a hydrometeorological nowcasting chain

<p>The use of the best input for an hydrometeorological chain is one of the key elements to improve the discharge prediction in the framework of early warning system. This fact gains in importance in a region such as Liguria Region , where the presence of many catchments with very small drained area and response time in the order of few hours make the prediction of severe events a critical point.</p><p>The work main scope is to exploit both observations and modelling sources to improve the discharge prediction in small catchments with lead time of 2-8 hours. To pursue this aim in this study the output from the nowcasting technique PhaSt, a spectral-based nowcasting procedure, is used together with the rainfall prediction of WRF NWP model with an hourly cycling 3DVAR data assimilation procedure to produce rainfall scenarios; the continuous distributed hydrological model Continuum, transforms these latter in streamflow scenarios. The connection between the forecasting models outputs is performed through the so called blending  technique, that tries to combine the rainfall fields according to their reliability function of the lead time. The blending has been modified with respect to the standard application using the information retrieved from the NWPS about the total volume on the domain considered and in terms of location of the rainfall structures. The whole chain is applied on some case events of 2014 all over Liguria Region, northern Italy.</p>

Housing First: la seva aplicació a Catalunya

<p>Tradicionalment s’ha intervingut en la problemàtica del sensellarisme a través del Model Continuum of Care, però aquest s’ha mostrat eficient només amb un perfil determinat de la població en situació de sense llar. Des del anys noranta als EEUU s’ha anat desenvolupant un model conegut com a Model Housing First el qual s’ha demostrat més eficient en la intervenció amb població més cronificada en la situació de sense llar. En aquest article es pretén comparar com s’està aplicant el Model Housing First a Catalunya amb el que s’entén des del model teòric creat als EEUU. Així com també veure quina és la situació actual del Model Housing First català. En primer lloc s’analitzen les principals fonts bibliogràfiques creadores del Model Housing First per tal d’intentar extreure les característiques teòriques bàsiques del model. En segon lloc s’intenta mostrar com s’està aplicant el model a Catalunya a través d’experiències com les que s’estan vivint a la Fundació Arrels de Barcelona i a Sant Joan de <br />Déu Serveis Socials per veure si s’hi troben les característiques que engloben el Model Housing First i amb quines dificultats s’estan trobant a l’hora d’aplicar el model. Finalment l’autora exposa els aspectes positius d’aplicar el Model Housing First, els aspectes sobre els que caldrà definir-se i les febleses del context català.</p>

A Review of some Theoretical Models for Point Defect Calculations

A Brief Sketch of Different Models for the Calculation of Defect Parameters in Metals and Alloys, Comparison of Data and Limitations Has Been Reviewed here; Especially Relaxations due to a Vacancy Type of Point Defect, its Formation, Migration, Activation Energies and Related other Parameters Based upon the Present Experimental Status. the Models Reviewed Are the Bond Model, Continuum Model, Semi-Discrete Model, Jellium Model, Thermodynamic Model, Lattice Statics Model, Atomistic Continuum Model and Pseudopotential Model. the Main Thrust Concerns the Last Model. the Taylor, Vashishta and Singwi, Harrison, Kleinmann and King and Kutler Form of Exchange and Correlation Function Are Almost Similar, Give Moderate Results and May Be Trusted for Better Results.

Testing Assumptions: The Impact of Two Study Abroad Program Models

There are considerable variables in study abroad program designs; however, this article focuses on the learning context. The purposes of this study, we define and compare the impacts of two types of programs on the program model continuum: the facilitated direct enrollment model and the hybrid model.