The methods of differential geometry are used with the assumption that rays of light follow geodesic trajectories in a space whose metric is determined by the refraction index. Keeping this in mind, we show that these hypotheses are equivalent to…

The thesis examines the utility of a pre-developed conceptual framework for learning about the human resource development (HRD) needs in a national context. The literature review focuses on knowledge-building within the main development theories and paradigms, two mainstream approaches to…

This study examined the prevalence of information epidemics in the physics literature. The primary interest was to find out whether outliers observed on time series charts of literatures are due to information epidemics, whether these epidemics are widespread occurrences in…

The synthesis of a GSK 2nd generation inhibitor of the hepatitis C virus, by enantioselective 1,3-dipolar cycloaddition between a leucine derived iminoester and tert-butyl acrylate, was studied. The comparison between silver(I) and gold(I) catalysts in this reaction was established by…

3,3'-Bis(dialkylaminomethyl)-1,1'-binaphth-2-ols (Binolams) have emerged during the last five years as very efficient chiral ligands in many enantioselective processes. Enantiomerically pure Binolams are easily accessible by means of a variety of methods, the most widely used being the so-called chiral Binol…

En los últimos veinte años se ha asistido a cambios importantes en la edición de revistas de geografía en España. Ha aumentado notablemente el número de títulos publicados y se ha producido una progresiva y constante adaptación a los criterios…

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