Search results for "Attori"

Health asset profiles and health indicators among 13- and 15-year-old adolescents

2018

Objectives We examined the associations between adolescents’ health assets and various health indicators (smoking, alcohol use, sleep length, physical activity, healthy eating, oral health, self-reported health, multiple health complaints). Methods A nationally representative sample was drawn from Finnish-speaking schools, comprising 13- and 15-year-old adolescents (n = 3833). The measures taken covered the adolescents’ health assets, which were labelled Family-financial, Psychological, Family-social, Friends-social, School-social, and Human. Our analysis applied two-step cluster analysis and multilevel mixed-effects binary logistic regression. Results Six asset profiles were identified: ‘L…

Funktionaaliset a posteriori virhe-estimaatit Maxwellin yhtälöille

2010

Funktionaaliset a posteriori virhe-estimaatit ovat osoittautuneet luotettavaksi tavaksi arvioida osittaisdifferentiaaliyhtälöiden numeeristen ratkaisujen virhettä. Tässä tutkielmassa malliongelma on Maxwellin yhtälöistä johdettu toisen kertaluvun reuna-arvotehtävä. Tälle yhtälölle on johdettu jo aikaisemmin funktionaaliset a posteriori virhe-estimaatit, mutta niiden suorituskykyä ei ole vielä tutkittu kattavasti. Tutkielman alkuosa keskittyy malliongelman numeeriseen ratkaisemiseen: elementtimenetelmään, jossa käytetään Nédélecin elementtiä. Tutkielman jälkimmäisessä osassa johdetaan funktionaalinen ala- ja yläraja. Näiden estimaattien todetaan analyyttisesti olevan tarkkoja. Tämä ominaisuu…

STUDIO DI ASSOCIAZIONE FRA DISLIPIDEMIA, SINDROMI COGNITIVE AMNESTICHE PRE-DEMENZA E MALATTIA DI ALZHEIMER: DATI DI POPOLAZIONE DELLO ZABÙT AGING PRO…

I Modelli di Equazioni Strutturali: Temi e prospettive

2013

Activated Cashew Carbon-Manganese Oxide Based Electrodes for Supercapacitor Applications

2023

The current global energy challenge which affects most developing countries in particular, is of major source of concern today. The availability of less expensive techniques of storing excess generated energy is critical to the success of the renewable energy roadmaps implementation. In this study, hydrothermal and chemical leaching methods have been used to synthesize MnO2 nanoparticles using KMnO4 and MnSO4 as precursors at 140 °C and from natural local manganese ore. Activated Carbon (ACF) have also been produced from agricultural Cashew biomass waste, through a physical carbonization and KOH activation process using temperatures of 700 °C – 900 °C for periods between 1-2 hours. The as-p…

Bioindikatoruppföljning av luftkvaliteten i Vasaregionen åren 2006-2007

2008

Vaasan alueen ilmanlaadun bioindikaattoritutkimus vuosina 2006-2007

2008

How to Sell SaaS: A Model for Main Factors of Marketing and Selling Software-as-a-Service

2011

Software-as-a-Service providers have been growing fast while the contemporary research literature has neglected analysis of their business-critical marketing and sales processes. In this paper we collect the key factors characterizing how to market and sell SaaS to business customers into an eight dimensional model. We also use an explorative multi-case study to observe six SaaS providers and validate the model. The interviewed providers emphasized use of the Internet for marketing communication while personal direct sale was the dominating sales approach. Customer acquisition cost was the key performance indicator for marketing and sales while customer lifetime value and churn were the KPI…

Analyses of single- and two-phase flow pressure drops in helical pipes using a modified RELAP5 code

2012

Abstract Thermal fluid dynamics analyses on single- and two-phase flows in helical pipes of steam generators to be used in Generation III and IV nuclear reactors have been performed. The study concerned with experimental activities as well code simulations carried out in the framework of a collaboration between the Department of Energetics of the Polytechnic of Torino and the Department of Energy of the University of Palermo. The goal was the validation of models implemented in Relap5/Mod3.2β thermal–hydraulic advanced code to simulate the hydrodynamic behaviour of helical pipe components in spite of the one-dimensional nature of the code. It is shown that much of the experimental data obta…

Microbeam SEE Analysis of MIM Capacitors for GaN Amplifiers

2018

Broad-beam and microbeam single-event effect tests were performed on metal–insulator–metal capacitors with three different thicknesses of silicon nitride (Si3N4) dielectric insulator: 250, 500, and 750 nm. The broad-beam tests indicated that the devices with the thicker, 500- and 750-nm dielectric did not have a greater breakdown voltage. The surrounding structures of the capacitor were suspected to be a possible cause. Microbeam techniques made it possible to localize the failure location for the 500- and 750-nm devices. The failure occurs in the air bridge structure connected to the top capacitor plate, which can therefore be considered as an edge effect, while for the 250-nm devices, the…