Search results for "Scientific"
showing 10 items of 1193 documents
Structural flexibility of bis(phenoxyimine) titanium complexes in the early stages of olefin polymerization process: a DFT study
2010
The behaviors of three structurally similar salan- and phenoxyimine-based catalysts activated by perfluorophenylborate were compared in the early stages of ethylene polymerization. It was found that moderate modification of the ligand structure can dramatically reduce the interactions between the cationic active site and the counteranion and, as a result, decrease the theoretically calculated upper bound to the ion separation barrier from 15 to 2 kcal/mol. The interactions between the ions in the ion pair have further repercussions on the structure of the active sites (octahedral vs square pyramid), transition states and thus the insertion barriers.
Autonomous on-board data processing and instrument calibration software for the SO/PHI
2018
The extension of on-board data processing capabilities is an attractive option to reduce telemetry for scientific instruments on deep space missions. The challenges that this presents, however, require a comprehensive software system, which operates on the limited resources a data processing unit in space allows. We implemented such a system for the Polarimetric and Helioseismic Imager (PHI) on-board the Solar Orbiter (SO) spacecraft. It ensures autonomous operation to handle long command-response times, easy changing of the processes after new lessons have been learned and meticulous book-keeping of all operations to ensure scientific accuracy. This contribution presents the requirements a…
Thermal and Hydrodynamic Analysis of the Melting Process in the Cold Crucible Using 3D Modeling
2008
PEDAGOGICAL LEADERSHIP ASPECTS OF LATVIAN VOCATIONAL EDUCATION INSTITUTIONS’ LEADERS
2019
Leadership of vocational education institutions’ leaders is one of the leading resources in order to provide access, quality, competitiveness and sustainability of vocational education. The goal of the research is to analyse leadership of vocational education institutions’ leaders on the basis of the Charismatic, Emotional, Anticipatory, Professional, Participatory, Cultural, Formative and Administrative Dimensions (Gento & González, 2012) identified due to the analysis of scientific literature and normative documents in the context of the vocational education reform. The outcomes of the quantitative research testify that students assess the vocational education institution leaders’ lea…
Spanish research in Educational Psychology from a gender perspective (2008-2018)
2021
[EN]: A comparative study disaggregated by gender of the scientific production in Educational Psychology of researchers working in Spanish institutions is carried out. A total of 1949 authors have been identified who have published some work in journals indexed in the Psychology Educational category in the Journal Citation Reports (JCR) corresponding to the years 2008-2018. The 56.44% of the authors identified were women versus 41.92% of men and a 1.64% of authors could not be identified. The results show an increase in the number of papers published in this discipline and an increase in the number of women working in Educational Psychology throughout the period analyzed. However, as a conc…
Crazy about science: The difficulties to mix accountability and caregiving
2016
The general model for evaluating scientific production fits into the accountability system: a way of measuring scientific output which does not usually acknowledge the presence of gender imbalances in academic institutions. Here we take the need to rethink this system and the indicators it uses to measure productivity and scientific quality, as well as the social conditions in which these activities are measured, as a starting point. In particular, we urge the review of this system, considering the administration of caregiving to dependents, be they young or old, as an example, because it is an unresolved problem that affects scientific work as well as progress in gender equality in univers…
Spanish scientific production in literature through a gender perspective in the Web of Science (1975-2017)
2019
[ES]: Se realiza un estudio comparativo desagregado por sexos de la producción científica en literatura de los investigadores que trabajan en instituciones españolas. Se han identificado 806 autores que han publicado algún trabajo de literatura en revistas indexadas en la WoS hasta el año 2017, analizando comparativamente su productividad y patrones de colaboración considerando la variable sexo. El 55.51 % de los autores identificados fueron hombres frente a un 44.49 % de mujeres. Los resultados muestran que entre los grandes productores del ámbito de la literatura predominan los hombres. Entre los productores moderados (2-5 trabajos), el 50.36 % de los autores identificados fueron hombres …
A che punto è la notte: i numeri delle donne nella matematica italiana.
2018
(EN) Gender equality in scientific research is a problematic issue and has been much debated in the last years. As a consequence, some countries have implemented policies to address the problem. In this paper we collected and analysed the last data regarding the academic careers on women mathematician in Italy, as a step for further discussion on possible positive actions. (IT) La scarsa presenza di donne nella ricerca scientifica ed in particolare nelle posizioni apicali è un problema riconosciuto e una questione molto dibattuta negli ultimi anni, con conseguente attuazione in vari stati di alcune politiche di pari opportunità. In questo articolo abbiamo raccolto ed analizzato i dati più r…
Gender inequality in directive bodies and scientific production on the Ibero-American psychology journals with greater international visibility
2018
[ES]: El presente trabajo analiza desde una perspectiva de género la composición de los equipos editoriales de las revistas iberoamericanas de Psicología incluidas en el Journal Citation Reports de 2015 (editado en 2016) y la producción de artículos y número de firmas en estas revistas en el JCR de 2014 y 2015. Los resultados indican mayor presencia de hombres en comités editoriales, con cargos de responsabilidad mayores y en revistas de mejor cuartil. En la producción científica destaca una igualdad en función del género en el número de firmas y en el número de mujeres y hombres como primer firmante, si bien las mujeres aparecen en menor medida como autores de la correspondencia y presenta…
Muestreos utilizados en investigación educativa en España
2002
En este trabajo se expone un estudio bibliográfico de distintas investigaciones que se han publicado recientemente en España, en las actas de congresos sobre educación. De todas las investigaciones que se han revisado, se analiza el tipo de muestreo que han empleado, cómo han sido seleccionadas y la aplicación de los instrumentos para la recogida de información, así como la forma en que han sido recogidos esos datos. Se pretende resaltar la importancia de la selección de muestras representativas, sobre todo para que los resultados tengan mayor relevancia y repercusión en el desarrollo del conocimiento educativo.