El uso del JClic como complemento para la enseñanza/aprendizaje de la Educación Física

In this article we seek to show the importance of the program Jclic in the design of applications didactic multimedia and interactive that procedural aspects of diverse areas of the curriculum work that embrace from the infantile education until the secondary education. In particular, we will center ourselves in the design of activities for the introduction from the Physical Education to different levels.En este artículo pretendemos poner de manifiesto la importancia del programa Jclic en el diseño de aplicaciones didácticas multimedia e interactivas que trabajan aspectos procedimentales de diversas áreas del currículum, que abarcan desde la educación infantil hasta la educación secundaria. En particular, nos centraremos en el diseño de actividades para la introducción de la Educación Física en los distintos niveles

La utilización de bases de datos como herramientas de evaluación

En este artículo se comprueba la validez de utilización de las bases de datos para elaborar pruebas objetivas. Al comparar distintos grupos no se han encontrado diferencias estadísticamente significativas entre los alumnos que realizaban las pruebas elaboradas manualmente por el profesor y los que realizaban las pruebas preparadas por el ordenador. Sin embargo, la flexibilidad que permite este sistema produjo un descenso drástico de los alumnos no presentados al final de curso.This article examines the validity of the data bases from which objetive tests are elaborated. No statistically significant differences were found between the teacher created tests and those generated by computer. Nevertheless, the flexibility allowed by this system resulted in a drastic reduction in absenteeism for final examinations

Notas fitosociológicas sobre el sudeste ibérico

Se da cuenta de algunos sintaxones nuevos del SE de Espana y más concretamente de la provincia de Alicante (Teucrio-Ulicetum dianii nova, subasociación típica, erinacetosum y ononidetosum; Querco-Pistacietum lentisci (Br.-81., 1935) A. et O. Bons 1950 viburnosum tini var. nova). Así mismo se proponen una combinación nueva (Daphno-Festucetum capillifoliae O.Bolós et Rigual 1967 stipetosum tenacissimae (Alcaraz et Rivas-Martínez in Alcaraz 1984) comb. nova y el nombre corregido de otra (Jasonio-Teucrietum thymifolii (Rigual, Esteve et Rivas Goday 1962) corr.As a result of phytosociological investigation on the "Sierra del Maigmó" (Alicante, Spain) we described a new association (Teucrio�Ulicetum dianii) with some subassociations. We make a new combination and, according to the Code of Phytosociological Nomenclature, we propose the correction of Jasonio�Teucrietum thymifolii

Evaluación y medición: Comparación de cuatro maneras de medición asistidas por ordenador. Un estudio estadístico

Este artículo describe un programa informático que genera y corrige pruebas de tipo test. Se constituye como un entorno abierto y flexible que puede ser actualizado y modificado a través de las bases de datos que contienen las preguntas de los diferentes temas. Posee distintos criterios de corrección que son analizados para comprobar su adecuación en la medición de los aprendizajes de un grupo de alumnos.This article describes software that generates and grades multiple choice tests. It consists of an open and flexible environment that can be updated and modified by means of databases containing discrete item questions for different units. It has different grading standards that are - analysed to check its accuracy measuring the uptake of a group of students

Cert: un modelo matemático y tecnológico de evaluación

En este artículo, los autores, profesores del Área de Didáctica de las Matemáticas de la Facultad de Ciencias dela Educación de la Universidad de Sevilla, realizan un estudio de las componentes matemáticas del modelo de evaluación propuesto en el CERT (Coopertative Project of Evaluation Results Training). Este trabajo se basa fundamentalmente en modelos estadísticos básicos.In this article, the authors, teachers of the Area of Didactic of Mathematics of the Faculty of Science of Education of the University of Seville, accomplish a study of the mathematics components of the evaluation model porposed in the CERT (Cooperative Project of Evaluations Results Training). This work is based fundamentally on basic statistic models

Metal dyshomeostasis based biomarkers for lung cancer diagnosis using human biofluids

Lung cancer (LC) is one of the most common causes of cancer-related deaths in the world and it is well known that trace elements play important roles in the carcinogenic process activating and inhibiting enzymatic reactions and metalloproteins, in which they usually participate as cofactors. A cross-sectional study was conducted on 48 lung cancer patients and 39 controls (56 men and 31 women), aged 44-76 years between March 2011 and June 2012. Eleven elements have been included in the study: V, Cr, Mn, Fe, Co, Cu, Zn, Se, Mo, Cd, and Pb, some of them considered toxic (V, Cd, Cr and Pb), while others are essential (Co, Mo, Se, Fe and Zn), and they have been analyzed by ICP-QQQ-MS in serum, urine and for the first time in bronchoalveolar lavage fluid (BALF). In order to understand the involvement of metals in this process, an analytical metallomic approach based on non-denaturing precipitation of proteins (NDPP) has been optimized for the fractionation of high molecular mass (HMM) and low molecular mass (LMM) metal species, in order to distinguish between metal species that affect the biological activity and toxicological potential of the elements. In this work, the NDPP followed by the analysis of metals by ICP-QQQ-MS has been applied for the first time to serum, urine and BALF samples from lung cancer patients and controls in order to get metal-size molecule profiles (MSMP), which can be used as metal-based biomarkers of altered metabolic processes such as oxidative stress and homeostasis. In this sense, we have demonstrated that several metals are good biomarkers when they are related to labile complexes, complexed with low molecular mass ligands, or in the form of metalloproteins (i.e. V and Cr in HMM and Cu in LMM), which has been described for the first time. On the other hand, metal dyshomeostasis biomarkers are proposed using metal ratios and correlations. Finally, the ratios between elements were shown to be important biomarkers for lung cancer in serum (V/Mn, V/Pb, V/Zn, Cr/Pb), urine (Cr/Cd, Mn/Cd, V/Cd, Co/Cd, Cd/Pb) and BALF (V/Cu), which reflects the dyshomeostasis of metals in lung cancer. In this sense, several metals are correlated to others suggesting also the existence of an interconnected homeostasis in lung cancer.The authors thank the Spanish Ministry of Economy and Competitiveness (CTM2015-67902-C2-1-P) and Regional Ministry of Economy, Innovation, Science and Employment (Andalusian Government. P12-FQM-0442). B. Callejon-Leblic thanks the Ministerio de Educacion for a predoctoral scholarship FPU13/03615. Finally, the authors are grateful to FEDER (European Community) (UNHU13-1E-1611 and UNHU15-CE-3140)

Effectiveness of mixtures of vivianite and organic materials in preventing iron chlorosis in strawberry

Application of Fe salts with different organic matter sources has been demonstrated to be effective in preventing Fe deficiency chlorosis. The main objective of this work was to study the effectiveness of different Fe sources based on mixtures of humic substances or compost with vivianite in preventing this nutritional disorder in strawberry (Fragaria × ananassa cv Camarosa). To this end, a randomised block experiment involving four replications (3 plants per replication) and one factor (Fe source) was performed in a greenhouse using a calcareous growing medium. Iron sources studied were: (i) control without Fe, (ii) control with an effective Fe source in calcareous media (EDDHA-Fe, 0.1 g kg–1), (iii) vivianite (1 g kg–1 medium, which is the recommended rate), (iv) vivianite (1 g kg–1) + humic substances (HS 0.06 g kg–1), (v) vivianite (0.5 g kg–1) + HS (0.06 g kg–1) and (vi) a mixture of composted cork residue and vivianite at a 6:1 mass ratio (CORVIV) applied at a dose of 6 g kg–1 medium. All Fe sources were effective in increasing SPAD readings when compared with control without Fe. Treatments based on vivianite provided non-significantly different SPAD readings from that obtained with EDDHA-Fe. However, only CORVIV showed non-significantly different dry matter (DM) production, leaf area index, and total Fe content in the aerial part than EDDHA-Fe. Humic substances and vivianite at 1 g kg–1 increased DM yield in plants when compared with vivianite without HS, results with this last treatment being similar to those obtained with vivianite at 0.5 g kg–1 with HS. It can be concluded that studied sources of organic matter increased the efficiency of vivianite in preventing Fe chlorosis in strawberry, especially vivianite enriched cork compost which was as effective as EDDHA-Fe