Search results for " valency"

showing 3 items of 3 documents

Excited states of the water molecule: Analysis of the valence and Rydberg character

2008

The excited states of the water molecule have been analyzed by using the extended quantum-chemical multistate CASPT2 method, namely, MS-CASPT2, in conjunction with large one-electron basis sets of atomic natural orbital type. The study includes 13 singlet and triplet excited states, both valence and 3s-, 3p-, and 3d-members of the Rydberg series converging to the lowest ionization potential and the 3s- and 3p-Rydberg members converging to the second low-lying state of the cation, 1 math. The research has been focused on the analysis of the valence or Rydberg character of the low-lying states. The computation of the 1 math state of water at different geometries indicates that it has a predom…

General Physics and AstronomyElectronssymbols.namesakeAb initio quantum chemistry methodsMoleculePhysics::Atomic PhysicsSinglet statePhysical and Theoretical Chemistry:FÍSICA::Química física [UNESCO]Valence (chemistry)ChemistryAb initio calculations ; Molecular configurations ; Orbital calculations ; Quantum chemistry ; Rydberg states ; SCF calculations ; Valency ; WaterValencyWaterRydberg statesMolecular configurationsUNESCO::FÍSICA::Química físicaOrbital calculationsExcited stateRydberg atomRydberg formulasymbolsQuantum TheorySCF calculationsAb initio calculationsIonization energyAtomic physicsQuantum chemistryAlgorithmsThe Journal of Chemical Physics
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Grammatica, didattica linguistica, tecniche di scoperta

2021

The study of grammar is not a source of enthusiasm for those who learn a language and the teaching of grammar often frustrates those who teach it. As a consequence, in learning and teaching motivations and results are negatively affected. A lively debate exists on the strategies to be employed in the teaching of grammar and in the metalanguage which teachers use in classrooms. Without the pretense of solving the knots of such debate, this book concretely indicates how an experimental method, made up of observations and reasoning, can be didactically stimulating and profitable.

Grammar language teaching valency argument strucure psich verbsSettore L-LIN/01 - Glottologia E Linguistica
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Valenza e insegnamento della lingua straniera

2015

This work deals with valency, a key syntactic notion whose chemistry-inspired label was established by Lucien Tesnière (1959), one of the most well-known contributors to the Prague Linguistic Circle. We will concentrate on two questions: (a) to what extent does valency play a role in Second Language Learning (SLL)?; and (b) what role should the use of valency play in language teaching practices? This paper will provide answers to these questions and propose reasons for motivating the use of valency in SLL.

noticinglcsh:Philology. Linguisticslcsh:French literature - Italian literature - Spanish literature - Portuguese literaturelcsh:P1-1091lcsh:PQ1-3999L1-L2 valency mismatchevalency mismatchesSecond language learningSociologytransferSettore L-LIN/02 - Didattica Delle Lingue ModerneSettore L-LIN/01 - Glottologia E LinguisticavalencyÉcho des études romanes
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