Search results for "ICAD"
showing 10 items of 1297 documents
Revista electrónica de investigación y evaluación educativa
2016
En el texto se plantea la necesidad de revisar el contexto de la evaluación del trabajo académico para poder entender las dificultades que tienen las revistas académicas latinoamericanas para cumplir con su evaluación a través del índice de impacto y la interacción con las empresas que lo emplean. De igual manera se describe la influencia que ejercen las editoriales comerciales sobre la producción y difusión del conocimiento. Se revisan algunas de las estrategias seguidas por las revistas latinoamericanas para hacer visible el conocimiento producido, al tiempo que se presenta la situación de las revistas mexicanas de investigación educativa en las bases de datos internacionales y regionales…
Anomální Ramanovy módy v teluridech
2021
[EN] Two anomalous broad bands are usually found in the Raman spectrum of bulk and 2D Te-based chalcogenides, which include binary compounds, like ZnTe, CdTe, HgTe, GaTe, GeTe, SnTe, PbTe, GeTe2, As2Te3, Sb2Te3, Bi2Te3, NiTe2, IrTe2, and TiTe2, as well as ternary compounds, like GaGeTe, SnSb2Te4, SnBi2Te4, and GeSb2Te5. Many different explanations have been proposed in the literature for the origin of the anomalous broad bands in tellurides, usually located between 119 and 145 cm(-1). They have been attributed to the intrinsic Raman modes of the sample, to oxidation of the sample, to the folding of Brillouin-edge modes onto the zone center, to the existence of a double resonance, like that …
Latvijas Tautas frontes piemiņas plāksne
2020
Raksts izveidots, balstoties uz 2020. gada novembra mēneša priekšmetu. Mēneša priekšmets ir izvēlēts, aktualizējot 1991. gada Barikāžu 30 gadskārtu, skatoties LU vēstures kontekstā. Tiek analizēta un vērtēta LU loma LTF darbībā un tās cīņā par neatkarīgas Latvijas valsts atjaunošanu PSRS pēdējās pastāvēšanas laikā. Pielikumā rakstam nāk audio intervijas ar LTF LU nodaļas biedriem, kuri dalās savos pieredzes stāstos par vētrainajiem Trešās atmodas notikumiem LU un LU saimes attieksmi pret tiem.
Entre l’entusiasme i l’obstruccionisme : la realitat de l’escola valenciana durant la Segona República (1931-1939)
2008
-M.Carmen.Agullo@uv.es Una mirada crítica respecte del debat teòric i de les pràctiques escolars a les comarques valencianes al llarg de la Segona República ens revela que els enfrontaments constants de caràcter polític que tingueren lloc entre els principals partits d’aquest àmbit territorial condicionaren, en bona mesura, la realitat de les polítiques educatives republicanes provinents dels organismes estatals. Els plantejaments oposats del Partit d’Unió Republicana Autonomista (republicà, laic, populista) i la Dreta Regional Valenciana (catòlica, de dretes, interclassista) en temes com l’escola unificada, el laïcisme o la coeducació, provocaren el retard en l’aplicació del Pla nacional d…
Fluoride-induced modulation of ionic transport in asymmetric nanopores functionalized with “caged” fluorescein moieties
2016
[EN] We demonstrate experimentally and theoretically a nanofluidic fluoride sensing device based on a single conical pore functionalized with "caged" fluorescein moieties. The nanopore functionalization is based on an amine-terminated fluorescein whose phenolic hydroxyl groups are protected with tert-butyldiphenylsilyl (TBDPS) moieties. The protected fluorescein (Fcn-TBDPS-NH2) molecules are then immobilized on the nanopore surface via carbodiimide coupling chemistry. Exposure to fluoride ions removes the uncharged TBDPS moieties due to the fluoride-promoted cleavage of the silicon-oxygen bond, leading to the generation of negatively charged groups on the fluorescein moieties immobilized on…
An unprecedented hetero-bimetallic three-dimensional spin crossover coordination polymer based on the tetrahedral [Hg(SeCN)4]2− building block
2019
[EN] Self-assembly of octahedral FeII ions, trans-1,2-bis(4-pyridyl) ethane (bpe) bridging ligands and [Hg(XCN)(4)](2-) (X = S (1), Se (2)) tetrahedral building blocks has afforded a new type of hetero-bimetallic Hg-II-Fe-II spin-crossover (SCO) 3D 6,4-connected coordination polymer (CP) formulated {Fe(bpe)[Hg(XCN)(4)]}(n). For X = S (1), the ligand field is close to the crossing point but 1 remains paramagnetic over all temperatures. In contrast, for X = Se (2) the complex undergoes complete thermal induced SCO behaviour centred at T-1/2 = 107.8 K and complete photoconversion of the low spin state into a metastable high-spin state (LIESST effect) with T-LIESST = 66.7 K. The current results…
Control of the spin state by charge and ligand substitution: two-step spin crossover behaviour in a novel neutral iron(II) complex
2014
The influence of the charge and steric hindrance on the spin state of a series of four monomeric Fe-II complexes derived from the tridentate tigands 2-(1H-benzoimidazol-2-yl)-1,10-phenanthroline (Hphenbi) and 2-(1H-benzoimidazol-2-yl-9-methyl-1,10-phenanthroline (Hmphenbi) and their deprotonated forms (phenbi(-), mphenbi(-)) are investigated. The crystal structure and magnetic properties show that [Fe(Hphenbi)(2)](BF4)(2)center dot 1.5C(6)H(5)NO(2)center dot H2O (1) and its neutral form [Fe(phenbi)(2)]center dot 2CHCl(3)center dot H2O (2) are low-spin complexes at 400 K due to the strong ligand field imparted by the terpyridine-like tigand. In contrast, the steric hindrance induced by the m…
Measurement of the group velocity of light in sea water at the ANTARES site
2012
The group velocity of light has been measured at eight different wavelengths between 385 nm and 532 nm in the Mediterranean Sea at a depth of about 2.2 km with the ANTARES optical beacon systems. A parametrisation of the dependence of the refractive index on wavelength based on the salinity, pressure and temperature of the sea water at the ANTARES site is in good agreement with these measurements.
Language, culture and interculturality through narratives with learners of Spanish as a foreign language
2018
Aquesta investigació es basa en una experiència d’aula amb aprenents adults d’espanyol com a llengua estrangera. L’objectiu és aprofundir en el desenvolupament conjunt de competències lingüístiques, comunicatives i interculturals mitjançant l’escriptura. S’atendrà la competència comunicativa des d’una perspectiva intercultural, en un procés d’aprenentatge de l’idioma basat en reflexions socioculturals. El treball queda emmarcat dins el Projecte TALIS (Ensenyament i Adquisició de Competències Solidàries i Interculturals a través de les Llengües i de la Literatura). El resultat ha estat la publicació d’un volum de contes bilingües (espanyol-anglès), amb un enfocament lingüístic i intercultura…
Eye tracking and the translation process: reflections on the analysis and interpretation of eye-tracking data
2014
Eye tracking has become increasingly popular as a quantitative research method in translation research. This paper discusses some of the major methodological issues involved in the use of eye tracking in translation research. It focuses specifically on challenges in the analysis and interpretation of eye-tracking data as reflections of cognitive processes during translation. Four types of methodological issues are discussed in the paper. The first part discusses the preparatory steps that precede the actual recording of eye-tracking data. The second part examines critically the general assumptions linking eye movements to cognitive processing in the context of translation research. The thir…