Search results for "passivity"
showing 4 items of 34 documents
Passivity Breakdown of Titanium in LiBr Solutions
2013
The passive behavior of titanium and its susceptibility to undergo localized attack in different LiBr solutions at 25 degrees C have been investigated using different electrochemical techniques: potentiodynamic polarization curves, potentiostatic passivation tests, EIS measurements and Mott-Schottky analysis. In low and moderately concentrated LiBr solutions, the breakdown potential E-b decreased with increasing bromide concentrations, while in highly concentrated LiBr solutions, E-b increased with increasing LiBr concentration. In the most concentrated LiBr solution (11.42M) Ti did not undergo passivity breakdown even at 9 V-Ag/AgCl. This observation can be explained by a a decrease in the…
Les miraculés a bierność edukacyjna i zawodowa młodych mieszkańców wsi - case study Polska i kraje UE
2018
Poziom wykształcenia jako składnik kompetencji może odgrywać ważną rolę w określaniu szans społecznego i materialnego sukcesu, jak i w podnoszeniu jakości życia jednostek i społeczeństw, tworząc odpowiednie warunki wzrostu gospodarczego. Znajduje to odzwierciedlenie zarówno w dokumentach strategicznych Unii Europejskiej, jak i poszczególnych państw członkowskich, stając się tematem debaty publicznej. Celem artykułu jest przedstawienie skali zjawiska bierności zawodowej i edukacyjnej młodzieży w wieku 15-34 lata w Polsce i w UE (młodzież NEET), w szczególności społeczności wiejskiej, w kontekście opinii mieszkańców wsi na temat wpływu wykształcenia na ich sytuację oraz oczekiwań w zakresie w…
Acoustic wave guides as infinite-dimensional dynamical systems
2015
We prove the unique solvability, passivity/conservativity and some regularity results of two mathematical models for acoustic wave propagation in curved, variable diameter tubular structures of finite length. The first of the models is the generalised Webster's model that includes dissipation and curvature of the 1D waveguide. The second model is the scattering passive, boundary controlled wave equation on 3D waveguides. The two models are treated in an unified fashion so that the results on the wave equation reduce to the corresponding results of approximating Webster's model at the limit of vanishing waveguide intersection.
Reconsidering passivity and activity in children’s digital play
2016
The discussion around children’s digital game culture has resulted in two contradictory images of children: the passive, antisocial children uncritically and mechanically consuming digital game content and the active, social children creatively using and interacting with digital game content. Our aim is to examine how these seemingly contradictory ideas of “active” and “passive” children could be considered. By means of empirical examples of children playing digital dress-up and makeover games, we will point out that for the successful use of these concepts, they need to be thoroughly contextualized. By discussing the context and referent of activity and passivity, it is possible to overcom…