Solving Physics Problems: The Conceptions and Practice of an Experienced Teacher and an Inexperienced Teacher

The results are described of two case studies on the conceptions and classroom practice of two Portuguese physics and chemistry teachers on the role of problem solving in the teaching/learning of science. One of these teachers was a novice and the other had about 20 years of teaching experience. The data were obtained from a questionnaire, a semi-structured interview, classroom observation, personal documents, and stimulated recall. The analysis was carried out with instruments organised into categories and specific indicators. The results showed there to be major differences between the intention behind the new curricula, the teachers' conceptions, and their practice. Some suggestions are put forward on the basis of these results for the initial and ongoing education of secondary education teachers of physics and chemistry in Portugal.     

AUTONOMY AND CHURCH UNIVERSITIES IN SPAIN

The question of the autonomy of Roman Catholic universities in Spain is examined in the light of certain unresolved tensions resulting from apparent contradictions between, on one hand, the Convention of 5 April 1962 Concluded between the Spanish State and the Holy See on the Secular Recognition of Studies Undertaken in Catholic Universities and the Agreement of 3 January 1979 Concluded by the Spanish State and the Holy See on Educational and Cultural Matters and, on the other hand, the Organic Law 11/1983 of 25 August 1983 on University Reform. Although the Catholic universities are private institutions, they do not have all the freedoms that other private educational institutions in Spain have. The author considers that this anomaly contradicts the constitutional guarantee of equality before the law.     

Preservice Teachers‘ Classroom Practice and Their Conceptions of the Nature of Science

The present article describes research carried out in Badajoz (Spain) with student teachers of Primary and Secondary science education. The preservice teachers conceptions of the nature of science were analyzeda and compared with their classroom practice when teaching a science lesson. The results indicated that there was no correspondence between the conceptions of the nature of science and the classroom practice. The implications of the research for science teacher education are dealt with.     

Who participates in R&D subsidy programs?: The case of Spanish manufacturing firms

Empirical evidence on the effectiveness of R&D subsidies to firms has produced mixed results so far. One possible explanation is that firms and project selection rules may be quite heterogeneous both across agencies and across industries, leading to different outcomes in terms of the induced additional private effort. Here we focus on the participation stage. Using a sample of Spanish firms, we test for differences across agencies and industries. Our results suggest that firms in the same industry face different hurdles to participate in different agencies’ programs, that participation patterns may reflect a combination of agency goals, and that patterns differ across high-tech and low-tech industries.     

Revealing Student Teachers’ Thinking through Dilemma Analysis

We explore the potential of dilemma analysis as an assessment tool to reveal student teachers’ thinking and concerns about their practice. For this purpose we analyze the dilemma analyses completed by 22 student teachers enrolled in our science teacher preparation program over a period of four semesters. Student teachers’ dilemmas fall into two main groups: dilemmas about student performance and dilemmas associated with instructional decisions. These dilemmas reveal a variety of concerns that student teachers have about their work. In particular, concerns about lack of student motivation and its consequences on performance and instruction play a central role in student teachers’ thinking. The recognition of common patterns of thought in our student teacher thinking has made us reflect on and re-evaluate important components of the curriculum in our science teacher preparation program.     

Representación y magnitud de los sumandos en la resolución de problemas aditivos

Resumen

Se estudia la incidencia del nivel de abstracción y de la magnitud de los sumandos en la resolución de tareas aditivas elementales. Para ello, dos muestras de niños de 5 a 7 años pasaron diferentes pruebas. Los resultados muestran en general que los factores edad, modo de representación y el tamaño y posición de los sumandos son estadísticamente significativos. Más en conaeto, los niños pequeños son especialmente sensibles al grado de abstracción de los sumandos, mientras que el grupo de los mayores se ve afectado principalmente por el tercer factor. Por otra parte, el repertorio de estrategias empleado es pobre en los preescolares y variado en los escolares.     

Attitudes of the Elderly Toward Information and Communications Technologies

Learning and using new technologies by the older people is seen as a demand for their integration in society and as a factor related to active aging. The goal of this article is to understand the attitudes of the elderly towards information and communication technologies in the context of a training course about the utilization of a digital platform. It is the result of an empirical study with a sample of 240 older people registered in the course Tele-Services for the Elderly, that took place in the Centers for the Elderly in the province of Cuenca, Spain. Through a self-administered questionnaire, aspects related to social activity, knowledge and use of the computer and Internet, expectations on learning and use of computer technology, personal competence, and self-concept were evaluated. The results obtained showed relationships between implication in the activities, experience with computers, and belief in the usefulness of learning new technologies. The participants' involvement in the activities was related to greater contact with information and communication technologies (ICT), which, in turn, generated more positive attitudes toward its learning and utility as well as more self-confidence. The elderly said that they enrolled in different activities to learn and to keep their minds active, and they thought of training as a means of social participation and lifelong learning.     

Description of the finger mechanical load of climbers of different levels during different hand grips in sport climbing

Abstract

Currently, direct empirical evidence exists about the amount of mechanical load that climbers apply to each finger during several hand grips specific to sport climbing, but not yet in a specific hanging position.

The objectives of this study are a) to draw and build a solid and rigid support that simulates the real action of a hand grip in a hanging position in sport climbing, to enable the measurement of the mechanical load endured by the fingers in a hanging position and in addition, b) to describe the distribution of mechanical load among fingers as a function of the level of climbing during different hand grips in a hanging position.

Thirty young male participants took part in the initial phase of reliability of the measurements, while another 64 male climbers participated in the subsequent study phase to check the relations between independent and dependent variables. The level of on sight climbing and the total practice experience were used to define the groups. The research task consisted of performing hanging positions on the created support in order to measure the mechanical load endured by the fingers in the three most characteristic hand grips in climbing (crimp, half crimp and slope). It has been concluded that the performance level of the climbers had no influence on the production of a pattern of differentiated finger mechanical load during the research task.     

A new approach to the metric of journals’ scientific prestige: The SJR indicator

A size-independent indicator of journals’ scientific prestige, the SCImago Journal Rank (SJR) indicator, is proposed that ranks scholarly journals based on citation weighting schemes and eigenvector centrality. It is designed for use with complex and heterogeneous citation networks such as Scopus. Its computation method is described, and the results of its implementation on the Scopus 2007 dataset is compared with those of an ad hoc Journal Impact Factor, JIF(3y), both generally and within specific scientific areas. Both the SJR indicator and the JIF distributions were found to fit well to a logarithmic law. While the two metrics were strongly correlated, there were also major changes in rank. In addition, two general characteristics were observed. On the one hand, journals’ scientific influence or prestige as computed by the SJR indicator tended to be concentrated in fewer journals than the quantity of citation measured by JIF(3y). And on the other, the distance between the top-ranked journals and the rest tended to be greater in the SJR ranking than in that of the JIF(3y), while the separation between the middle and lower ranked journals tended to be smaller.