Search results for " EVA"
showing 10 items of 1941 documents
Field-induced tip–sample oxygen transfer in scanning tunneling microscopy on TiO2(110) (1 1).
2008
International audience; A study on the field-induced tip–surface oxygen transfer at room temperature and its influence on the tunneling conditions for stable STM imaging of the TiO2(110) (1 1) surface is reported. A simple model of field-induced transfer is applied to tungsten and platinum–iridium tips. The oxygen transition rates from the sample to the tip or from the tip to the sample depend on the oxygen desorption barriers formed at tunneling distance. For stable imaging the applied bias voltage has to balance the oxygen transfer probabilities in both directions. In the case of Pt/Ir tips, the tunneling conditions for images with clear evidence of bridging oxygen point defects have been…
Fast narrowing-driven partial evaluation for inductively sequential programs
2005
Narrowing-driven partial evaluation is a powerful technique for the specialization of (first-order) functional and functional logic programs. However, although it gives good results on small programs, it does not scale up well to realistic problems (e.g., interpreter specialization). In this work, we introduce a faster partial evaluation scheme by ensuring the termination of the process offline . For this purpose, we first characterize a class of programs which are quasi-terminating , i.e., the computations performed with needed narrowing—the symbolic computation mechanism of narrowing-driven partial evaluation—only contain finitely many different terms (and, thus, partial evaluation termi…
: Influence of tenth graders' personal school experiences on their achievement and curriculum choices
2005
This study shows that various dimensions of students' school experiences (namely academic self-evaluation and their attitude towards certain subjects) have a significant influence on their academic achievement (French and Mathematics), as well as on their curriculum choices. The results should encourage teachers and counsellors to take into account students' personal biases when helping them to either construct academic projects or to avoid academic failure.
Technical‐economic evaluation of the effectiveness of measures applied to the artificial lighting system of a school
2021
Ensuring optimum interior lighting is a topic of great importance, as this influences not only the well-being of users but also the optimal performance of visual tasks. Lighting can be natural, but if not sufficient, it can be compensated with artificial lighting. This study highlights a methodology for designing a new lighting system that takes into account both technical and economic aspects. The method was applied to an existing school located in southern Italy, in which the electricity consumption is related to the current lighting system. The school is chosen as being representative of the construction type and layout of many local schools. In addition, the coexistence of several visua…
Facilitators and Barriers to the Sustainability of a School-Based Bullying Prevention Program.
2022
AbstractThe long-term sustainment of bullying prevention programs has rarely been investigated. This study addresses this gap by identifying facilitators and barriers to the systematic implementation of KiVa antibullying program in real-life conditions, after an evaluation trial. The study is based on focus group interviews with teachers from 15 Finnish primary schools implementing the KiVa program. The schools were selected based on the annual KiVa survey data, with the criteria of long-term involvement in delivering the program and reaching successful outcomes in terms of decreasing trends in bullying and victimization. By utilizing thematic analysis, we identified program-related, organi…
Propiedades métricas de un instrumento para evaluar el Valor Social Subjetivo de la Educación: escala SECS-EVALNEC VSE-Estudiantes-Secundaria
2018
El estudio analiza los resultados de la aplicación de un instrumento que pretende medir el Valor Social Subjetivo de la Educación. Trabajando con un grupo de 341 estudiantes de Educación Secundaria Obligatoria en España, se exponen las propiedades métricas del instr umento desde una metodología de Teoría Clásica de los Tests y Teoría de Respuesta al Ítem para comprobar su fiabilidad y bondad de ajuste. Después de comprobar la dimensionalidad de la escala y el funcionamiento de los reactivos, los datos muestr an que todos se ajustan adecuadamente al modelo de referencia. A partir de ello, presentamos una propuesta de escala SECS - EVALNEC VSE - Estudiantes - Secundaria unidimensional conform…
Diseño e implementación de una secuencia de enseñanza para introducir los conceptos de sustancia y compuesto químico
2012
Este estudio propone la implementación de una secuencia didáctica para facilitar el aprendizaje de los conceptos de sustancia, sustancia simple y compuesto en educación secundaria. Para su elaboración se ha partido del análisis histórico y las concepciones alternativas más frecuentes de los estudiantes respecto a estos conceptos. Su evaluación se ha realizado mediante un estudio comparativo entre grupos de alumnos que la han utilizado en clase y grupos que han seguido un método de enseñanza tradicional. Los resultados muestran que la selección de contenidos y las estrategias utilizadas en una secuencia de enseñanza de orientación constructivista ofrece a los estudiantes mayor capacidad de a…
The development of secondary students’ feedback literacy: Peer assessment as an intervention
2020
A growing body of research has recognized the importance of students’ having active roles in feedback processes. Feedback literacy refers to students’ understandings of and participation in feedback processes, and research on students’ feedback literacy has so far focused on higher education; secondary schools have not received attention. This case study investigates secondary students’ feedback literacy and its development in the context of formative peer assessment. From various data sources, three categories of students’ feedback literacy were identified, and criteria for the levels of literacy in each category were created. The criteria were used in the coding of seventh- and eighth-gra…
Discursive Strategies in the Language of Foreign Policy. The Semantics and the Appraisal of Security
2016
As globalization has produced more complex interconnections among states, and borders have become more permeable, foreign policy practitioners deal with issues directly affecting the lives of individuals. From terrorism to climate change, from immigration to human rights, the term security appears in all of them. By combining different approaches, mainly Corpus Linguistics and Appraisal Theory, this book provides insights into the linguistic features of the discourse of security of British foreign ministers from a phraseological perspective. Through the interrogation of a corpus of political speeches, the study discloses those discursive strategies by which speakers and writers reveal impli…