Browse publicly accessible academic documents published in 1996.
982 documents
The work presented in this paper consisted on the integration of several areas within a factory by using different communication standards. The described implementation satisfies several types of requirements, which include not only the functional requirements, but also the…
Producción Científica
En este capítulo se analizan las claves de la investigación en el aula de lenguas extranjeras, con definición de conceptos y propuestas prácticas.
EconStor is a publication server for scholarly economic literature, provided as a non-commercial public service by the ZBW.
DOI: 10.3790/schm.116.2.199
The decay of the spin-spin time correlation functions in a one-dimensional Ising model with Glauber dynamics is studied. In the low-temperature limit, an asymptotically valid continuous space equation is derived. It is a modified diffusion equation with a purely exponential…
DOI: 10.1103/PhysRevE.53.458
En aquesta monografia es presenten els primers resultats de l'Enquesta sobre els hàbits i les condicions de vida de la població de la regió metropolitana de Barcelona, el treball de camp de la qual es va fer durant l'any 1995. L'Enquesta és la base d'un programa permanent…
EconStor is a publication server for scholarly economic literature, provided as a non-commercial public service by the ZBW.
DOI: 10.6092/unibo/amsacta/5073
Los hidrocarburos aromáticos policíclicos (P AH) constituyen un numeroso grupo de compuestos orgánicos ampliamente distribuídos en el medio ambiente, y cuya reconocida carcinogenicidad los ha situado en las listas de los polucionantes orgánicos prioritarios. Los P AH tienen…
EconStor is a publication server for scholarly economic literature, provided as a non-commercial public service by the ZBW.
DOI: 10.6092/unibo/amsacta/5048
Castro Martínez, Pedro V.; Chapman, Robert W.; Gili Suriñach, Sílvia; Lull, Vicente; Micó Pérez, Rafael; Rihuete Herrada, Cristina; Risch, Robert; Sanahuja Yll, Mª Encarnacion
Se presenta una primera síntesis sobre los trabajos que se están realizando en Tell Halula (valle del Eufrates, Siria) que proporcionan una ocupación continuada desde el horizonte cronológico-cultural del período pre-pottery neolithic B (PPNB) medio hasta elfinal delas etapas…
In this study we try to justify the importance of considering in science teaching that facet of critical thinking that is based on the idea of comparing the evidence with the prevision. Together with critical thinking, the most general and fundamental condition of coherent…
DOI: 10.5565/rev/ensciencias.4243
This article reviews the different lines of research related to the studies about «consistency» in the ideas as expressed by students, a highly interesting concept both from the theoretical and practica1 standpoints.
DOI: 10.5565/rev/ensciencias.4242
This study is a continuation of the task of validating a paper and pencil test to check whether the student has scientific conceptions about heat, temperature and internal energy in which we are working since 1989. The third version of this instrument is presented here. Previous…
DOI: 10.5565/rev/ensciencias.4241
The purpose of this study is to pay attention to the structure of scientific thinking as a means to form the curriculum. Therefore an analogic concept of science is analysed in order to be useful to different kinds of knowledge and academic matters. This study implies that…
DOI: 10.5565/rev/ensciencias.4240
The present article seeks to present a Science Teaching and Learning Model Based on Problem Solving. The presentation is based on a review or related Literature. An empirical study carried out in Portugal with secondary school teachers of Physics and Chemistry also contributed…
DOI: 10.5565/rev/ensciencias.4239
Calculus, we have established a questionnaire and an analytical approach to responses, fully rooted in networks. The theoretical framework is based on the Dreyfus and Vinner idea of cconcept image)), where we attune the expression eperception of a propertyn. We have tested the…
DOI: 10.5565/rev/ensciencias.4235
In the last years the researchers on Science Education have given preferent attention to student's conceptions. Studies have been carried out and their interest is still growing. Our purpose in this paper is to give an approach to three ways of focusing the question: the…
DOI: 10.5565/rev/ensciencias.4228
The acquisition of knowledge in different domains may share certain general ways of reasoning; but besides this, each specific domain may require specific ways of reasoning. In this paper we identify and we characterize four manifestations of spontaneous ways of reasoning, and…
DOI: 10.5565/rev/ensciencias.4227
In this paper the authors present results obtained along three years in evaluations made to the students entering the first Chemistry course in the Buenos Aires University, referred to the law of conservation of matter and the concept of chemical change. These results, which are…
DOI: 10.5565/rev/ensciencias.4223
The difficulties which Secondary School and University students encounter when looking at cell samples through the microscope are explored in this paper. Students were asked to draw what they expected to see, and later to draw what they did see while performing a Laboratory…
DOI: 10.5565/rev/ensciencias.4225
Although the idea of sustainable development came up in the first reports of the Club of Rome some twenty years ago, it was not taken into account by educationalists until the late eighties. The paper discusses two issues that have emerged from that of sustainable development…
DOI: 10.5565/rev/ensciencias.4224
Analysing the ideas with which teachers and pupils confront problems in physics and chemistry. The starting point for this analysis is the compilation of the difficulties and causes of failure involved in solving problems raised during a didactic investigation of these subjects…
DOI: 10.5565/rev/ensciencias.4222
This paper offers a detailed example of transformation of a science practical work, from the usual simple recipe into an open problematic situation capable of favouring pupils' research.
DOI: 10.5565/rev/ensciencias.4221
In this paper we investigate if primary school students are able to relate microorganisms with food transformations. The subjects of this study were 343 4th. and 7th. grade children from Lugo (Spain) and the instrument used consisted of four multiple choice questions. The…
DOI: 10.5565/rev/ensciencias.4220
In this paper we analize the level of knowledge students have at different educational levels (15-18 years), about some basic concepts related to genetic inheritance. The strategies developed by students when solving, successfully, genetic problems have also been studied. The…
DOI: 10.5565/rev/ensciencias.4219
The historical evolution of the Le Chatelier's principle is connected with its use in the chemistry classroom. The apparent simplicity in which the Le Chatelier's principle was first formulated and the success achieved in the implementation of some important industrial processes…
DOI: 10.5565/rev/ensciencias.4213
This article is a review about the effectiveness of practicals in science education at the secondary and tertiary levels. Through more than one hundred references, the authors conclude solid arguments have not been provided to justify the great deal of material and human…
DOI: 10.5565/rev/ensciencias.4212
This paper reports the first stage of a project investigating college novice students' interpretations and uses of different realisations of the concept of variable, namely: as unknown, as general number, in functional relationships. In particular, we present and discuss the…
DOI: 10.5565/rev/ensciencias.4211
According to the results of an exploratory research on Thermodynamics, it is concluded that the university students tested prefer explanations which account for underlying mechanisms (batigenous explanations) in physical phenomena analysed during the instruction process. Usage…
DOI: 10.5565/rev/ensciencias.4210
Authors propose different types of teacher after working with a group of Primary and Secondary teachers in the Science area. In a structuralistic way, differentiating elements were determinated and abehaviour models in teachingllearning tasks» were established with the intention…
DOI: 10.5565/rev/ensciencias.4209
The importance of identifying the prior ideas of students on a given content is based, among other reasons, on the need to accommodate the teaching processes to the cognitive peculiarities of the pupils. However, individuals tend to develop ideas or conceptions only for some…
DOI: 10.5565/rev/ensciencias.4208
The different constructive psychological theories present some difficulties in order to explain and justify the results obtained by the researches carried out within the field named pupils'conceptions. In this paper we introduce a new psycho-pedagogical model which agglutinates…
DOI: 10.5565/rev/ensciencias.4206
The present article describes a research carried out with four student teachers of primary and secondary science education. The preservice teachers' conceptions of the nature of science and learning and teaching of science were analyzed and compared with their classroom practice…
DOI: 10.5565/rev/ensciencias.4205
In many European countries, chemistry education faces a number of important recurrent difficulties. For example, at the secondary school level, students' interest in chemistry is decreasing and teachers complain that repeated explanation and demonstration are not very effective…
DOI: 10.5565/rev/ensciencias.4204
El artículo evalua el proceso de implementación de los acuerdos de paz de El Salvador. En la primera parte, se analiza el estado actual de ejecución de cada uno de los aspectos fundamentales de los acuerdos: desmilitarización, derechos humanos, democratización y transferencia de…
DOI: 10.5565/rev/papers/v49n0.1827
Este artículo se centra en la evolución política de El Salvador y Nicaragua. En la primera parte se realiza un breve resumen de la historia política de ambos países hasta el estallido de la crisis revolucionaria a finales de los los setenta. En la segunda parte se abordan las…
DOI: 10.5565/rev/papers.1826
El artículo tiene como objetivo desarrollar algunas hipótesis sobre la naturaleza y el tipo de relación, en la reciente política centroamericana, entre las condiciones estructurales y dinámicas de los procesos de cambio y las pautas de incidencia/adaptación a éstos por parte de…
DOI: 10.5565/rev/papers/v49n0.1825
El ensayo discute las posibilidades de construir la vida democrática en sociedades que salen de la guerra y la violencia, con rencores, pobreza e intolerancia. Con las causas que la provocaron, agravadas ahora. Tal es la situación de Guatemala, El Salvador y Nicaragua, afectadas…
DOI: 10.5565/rev/papers/v49n0.1823
La naturaleza de las transiciones democráticas en Centroamérica desde 1979 (en sus éxitos y en sus fracasos) requiere modelos mis complejos para el análisis del cambio política. La discusión tradicional sobre los pre-requisitos de las democracias debe acompañarse con un análisis…
DOI: 10.5565/rev/papers/v49n0.1822
There are several well-known counter-examples to the Binding Theory of Chomsky (1981, 1993) which have to do with Principles (B) and (C). These counter-examples have different degrees of acceptability. We can account for these counter-examples and explain their different degrees…
This paper deals with the restrictions that operate on prefixation with iterative prefix re-in Spanish. These restrictions are based on aspectual information carried by verbs. We argue that the prefix re- is attached to telic bases, i.e., Accomplishment and Achievement verbs in…
This paper tries to interpret the role of certain clitics attached to functional categories located over AgrS. They seem to be in charge of the expression of the modal orientation of the sentence. We show that while certain languages have elements specifically designed for this…
In this paper, starting from a brief analysis of weak prepositions in Tortosan. I try to show that the preposition a is the only one appearing in adjunct and indirect object PPs. This forces us to account for the form [an] which this preposition takes in certain contexts…
Index de les obres ressenyades: J. MONTSERRAT, Platón. De la perplejidad al sistema.
Index de les obres ressenyades: E. COURTNEY, Musa Lapidaria. A selection of latin verse inscriptions.
Index de les obres ressenyades: S.J. HARRISON (ed.), Hommage to Horace. A Bimillenary Celebration.
