Search results for "NEA"
showing 10 items of 16082 documents
Trend analysis of convective and stratiform precipitation over a Mediterranean area
2021
Separating convective and stratiform rainfall is still today an open challenge, especially because of the difficulty in defining a clear distinction between the two rainfall regimes. At the same time, the study of convective rainfall is essential to better understand the dynamics that generate them and the proactive measures that could reduce the risk of important consequences (e.g., human life losses and economic damages). Furthermore, the shadow of a changing climate makes these aspects even more alarming, due to the possibility of an increase in the occurrence of such severe events. Sicily, whose climate could be considered as representative of the central Mediterranean area, has been of…
Trilineaariset koordinaatit
2012
CCDC 189163: Experimental Crystal Structure Determination
2002
Related Article: C.Boskovic, A.Sieber, G.Chaboussant, H.U.Gudel, J.Ensling, W.Wernsdorfer, A.Neels, G.Labat, H.Stoeckli-Evans, S.Janssen|2004|Inorg.Chem.|43|5053|doi:10.1021/ic049600f
The identity of the tropical African Polichne mukonja Griffini, 1908 (Orthoptera, Tettigoniidae, Phaneropterinae)
2016
Polichne mukonja Griffini, 1908 from Cameroon was hitherto known only from the holotype preserved at the Royal Belgian Institute of Natural Sciences, Brussels. This was probably due to the fact that the genus Polichne Stål, 1874 distributed only in Australia and Papua New Guinea. In view of this distribution, the tropical African species was therefore overlooked in the African literature. The recent discovery of two specimens at the Naturhistorisches Museum, Vienna, now provides us with a better understanding of the identity of this taxon, which is related to the African genus Catoptropteryx Karsch, 1890. Polichne mukonja is here transferred to a new genus Griffinipteryx and both taxa are p…
Positive solutions for nonlinear Robin problems
2017
We consider a parametric Robin problem driven by the p-Laplacian with an indefinite potential and with a superlinear reaction term which does not satisfy the Ambrosetti-Rabinowitz condition. We look for positive solutions. We prove a bifurcation-type theorem describing the nonexistence, existence and multiplicity of positive solutions as the parameter varies. We also show the existence of a minimal positive solution $\tilde{u}_\lambda$ and establish the monotonicity and continuity of the map $\lambda\to \tilde{u}_\lambda$.
Peritoneal tuberculosis in the differential diagnosis with peritoneal carcinomatosis: Case report and literature review
2012
Tuberculosis is a severe public health problem in developing countries, but it is taking on the characteristics of a global epidemic. By virtue of migration flows, in fact, we are observing a resurgence of this disease in western countries, in all its forms including the genital one. The problem became more serious with the emergence of multidrug-resistant mutant (MDR) strains of Mycobacterium Tuberculosis. In this paper we describe a case of peritoneal tuberculosis, whose diagnosis was histologically made after laparoscopic examination. Laparoscopy proved crucial for the differential diagnosis with peritoneal carcinomatosis, particularly following the discrepancy in the results provided by…
Nonlinear evolution equations for turbulent superfluids
2010
In this paper a system of evolution equations for turbulent superfluid helium is written in the nonlinear regime, choosing as fundamental fields the density, the velocity, the heat flux, the non-equilibrium temperature and the average vortex line density per unit volume. Approximate equations are written, where second order terms in the non-equilibrium quantities are retained.
Students' problems in the identification of subspaces in Linear Algebra
2018
International audience; The goal of the study presented in this paper is the investigation of students' problems with exercises concerning central topics of linear algebra courses at university level. We present the results of our analysis of students' work on an exercise about subspaces of . We evaluated the written solutions of the task as well as transcripts based on videos taken of student groups working on the problem. We identified and classified descriptions of vector spaces and subspaces that varied widely and demonstrated highly different skills in working with geometric or formal algebraic objects. We analyzed how far students could progress in a complex reasoning process, and ide…
Luokan työrauhaan vaikuttavat tekijät : sekamallin sovellus
2017
Tämän pro gradu -tutkielman tarkoituksena oli tarkastella koululuokkien työrauhaan vaikuttavia tekijöitä. Aineistona käytettiin Niilo Mäki Instituutin Prokoulu-projektin tutkimusaineistoa. Vastemuuttujana käytettiin oppilaan arvioimaa luokan työrauhaa. Selittäviksi muuttujiksi asetettiin aiemman tutkimustiedon perusteella oppilaan arvioita erilaisista sosiaalisista suhteista ja käyttäytymiseen liittyvistä asioista, luokan opettajan ominaisuuksia ja arvioita koulun toimintakulttuurista sekä yleisiä luokkaan liittyviä ominaisuuksia. Analyysimenetelmänä käytettiin hierarkkista lineaarista regressiomallia, ts. lineaarista sekamallia, johon asetettiin oppilas-, luokka- ja koulutasot. Sekamallin …