Search results for "RAV"
showing 10 items of 5866 documents
Astronomy and space on the big screen : how accurately has cinema portrayed space travel and other astrophysical concepts?
2016
"Since its origins, cinema has been fascinated with the subject of scientific developments. In particular, astronomy and astrophysics have played an important role in science fiction stories about space travel and exploration. Though the science has not always been accurately represented, in the last decades there has been more and more interest from the cinema industry in approaching scientists to make sure that the stories and concepts shown in films are closer to our true understanding of the universe. In this article, I will explore how cinema has portrayed astrophysical concepts throughout the decades, and how sometimes cinema has even inspired the direction of scientific research."
Parabolic equations with nonlinear singularities
2011
Abstract We show the existence of positive solutions u ∈ L 2 ( 0 , T ; H 0 1 ( Ω ) ) for nonlinear parabolic problems with singular lower order terms of the asymptote-type. More precisely, we shall consider both semilinear problems whose model is { u t − Δ u + u 1 − u = f ( x , t ) in Ω × ( 0 , T ) , u ( x , 0 ) = u 0 ( x ) in Ω , u ( x , t ) = 0 on ∂ Ω × ( 0 , T ) , and quasilinear problems having natural growth with respect to the gradient, whose model is { u t − Δ u + ∣ ∇ u ∣ 2 u γ = f ( x , t ) in Ω × ( 0 , T ) , u ( x , 0 ) = u 0 ( x ) in Ω , u ( x , t ) = 0 on ∂ Ω × ( 0 , T ) , with γ > 0 . Moreover, we prove a comparison principle and, as an application, we study the asymptotic behav…
Analistas simbólicos, jerarquía urbana y atracción de talento en las ciudades mundiales españolas (2005-2019): un análisis a partir de la EPA
2021
Este trabajo utiliza los microdatos de la Encuesta de población activa del INE entre 2005 y 2019 para analizar el nivel de competencias de la población ocupada, los procesos de cualificación del mercado de trabajo de las ciudades mundiales españolas (Madrid, Barcelona, Valencia, Sevilla y Bilbao) y el papel que están teniendo las migraciones de profesionales y técnicos altamente cualificados como reflejo de su capacidad diferencial para atraer talento externo. Siguiendo el marco conceptual propuesto por Allen J. Scott de creciente polarización de los mercados de trabajo metropolitanos entre una clase de «analistas simbólicos» de alta cualificación y una «subclase de servicios», se considera…
Modelling the effect of nuclear motion on the attosecond time-resolved photoelectron spectra of ethylene
2014
arXiv:1403.5408
Il progetto architettonico e paesaggistico come strumento per la valorizzazione dei tracciati storici
2017
Il saggio esplora la possibilità di valorizzazione della straordinaria rete di tracciati storici che ha strutturato i nostri paesaggi, conferendovi ancora oggi identità. Le politiche e le buone pratiche di riscoperta di percorsi che si propongono come itinerari culturali e rotte turistiche. Non si tratta di una mera questione di percorrenze: rivitalizzare un tracciato significa contribuire ad attivare un circolo virtuoso che coinvolge luoghi spesso dimenticati e comunità che sulla propria storia possono rinnovare il proprio futuro. Per raggiungere questo ambizioso obiettivo ha un ruolo ineludibile il progetto architettonico e paesaggistico quando è capace di innestare un processo di trasfor…
Współczesny (neo)nomadyzm a edukacja kulturowa
2014
The aim of the article is to notice the cultural-cognitive character of the contemporary travel. Chasing the exotic, understood as a trial to save the authentic, has gained much strength in the world threatened by cultural unification. The vision of the world not touched by the Western culture has become a perfect selling material. This trend has been confirmed by incredibly popular traveling programs, as well as a rich and original offer of the traveling agencies, tempting clients with meeting the world of the Masai, Hamer or Mursi tribes. In the age of globalization the cultural tourism is an important alternative to mass travel, mainly aimed at entertainment.
France
2016
Impact of increased dissolved organic carbon and nutrient loading on humic lake phytoplankton
2011
Lisääntyneen liuenneen orgaanisen hiilen (DOC) kuormituksen vaikutuksia humusjärven (Alinen Mustajärvi) kasviplanktoniin tutkittiin koko järven manipulaatio -kokeessa 2007–2009. 2007 oli tutkimuksen kontrollivuosi ilman manipulaatiota, 2008–2009 järveen lisättiin kerran kuukaudessa ruokosokeria, ja lisäksi ravinnelisäysten vaikutuksia tutkittiin pussikokeissa kolme kertaa avovesikaudella 2009. Tarkoituksena oli lisätä heterotrofisten bakteerien ravintona käyttämän helposti hajotettavan DOC:in määrää ilman, että se vaikuttaisi kasviplanktonin kokemiin valaisuolosuhteisiin. Autotrofisten ja miksotrofisten levien reaktioita vertailtiin kokeissa keskenään. Kasviplanktonyhteisöissä oli suuria er…
The influence of infective dose, nutrient availability and coinfection on virulence of Flavobacterium columnare : implications of intensive aquacultu…
2016
Ecological factors are known to affect disease dynamics and even lead to disease emergence. Especially in opportunistic, environmentally transmitted pathogens, the environment may significantly contribute to pathogen virulence. Intensive farming, including aquaculture, has been suggested to create conditions favouring development of highly virulent pathogens. At Finnish fish farms, epidemics caused by opportunistic Flavobacterium columnare have been constantly increasing in their prevalence and severity since the 1980’s. Yet, factors behind the increased virulence of the pathogen and their mechanisms of action have largely remained unsolved. In this thesis, I explore the effects of infectio…