103 resultados para grundskolans tidigare år


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[eng] In this paper we claim that capital is as important in the production of ideas as in the production of final goods. Hence, we introduce capital in the production of knowledge and discuss the associated problems arising from the public good nature of knowledge. We show that although population growth can affect economic growth, it is not necessary for growth to arise. We derive both the social planner and the decentralized economy growth rates and show the optimal subsidy that decentralizes it. We also show numerically that the effects of population growth on the market growth rate, the optimal growth rate and the optimal subsidy are small. Besides, we find that physical capital is more important for the production of knowledge than for the production of goods.

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In this paper we show that the R&D effort of a country and its economic growth are highly correlated. In order to analyze this relationship, we study the nature of the researching activity. In particular, we focus on the following characteristics of research: the inherent uncertainty of researching, the existence of a wage premium associated to innovative activities, and moral hazard. Assuming that a higher R&D effort translates into a higher R&D success probability, we show that when the R&D success probability is low, the economy is not willing to bear the risk associated to R&D activities. As a consequence, few researchers are hired and the economy stays in an R&D poverty trap, a situation where the economy is stacked in a low growth environment due to the uncertainty associated with the researching activity.

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Creating and using FLOSS in R+D projects raises several legal issues, which need to be managed as soon as possible - preferably during the project planning stage. Challenges in the areas of project structure and policy, licenses and licensing, exploitation strategies, community management, and FLOSS-friendliness in general all have their legal aspects, which are commented here. Some recommendations are made for assisting in the use of FLOSS in R+D projects, especially in multiple party consortiums.

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FOSS packages are becoming ever more present in R&D projects carried out a variety of entities, including large corporations. I will focus on how legal risks associated with the use of FOSS licenses can be assessed and discuss measures directed to risk mitigation.

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We provide evidence on the dynamics in firms’ R&D cooperation behaviour. Our main objective is to analyse if R&D collaborative agreements are persistent at the firm level, and in such a case, to study what are the main drivers of this phenomenon. R&D cooperation activities at the firm level can be persistent due to true state dependence, this implying that cooperating in a given period enhances the probability of doing it in the subsequent period and it can also be a consequence of firms’ individual heterogeneity, so that certain firms have certain characteristics that make them more likely to carry out technological alliances.

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We provide evidence on the dynamics in firms’ R&D cooperation behaviour. Our main objective is to analyse if R&D collaborative agreements are persistent at the firm level, and in such a case, to study what are the main drivers of this phenomenon. R&D cooperation activities at the firm level can be persistent due to true state dependence, this implying that cooperating in a given period enhances the probability of doing it in the subsequent period and it can also be a consequence of firms’ individual heterogeneity, so that certain firms have certain characteristics that make them more likely to carry out technological alliances.

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Este estudio ex post facto analiza las relaciones entre las dimensiones y facetas del NEO-PI-R y los 14 trastornos de personalidad del MCMI-III en una muestra no clínica española (N = 674). Se exploran las diferencias y similitudes con los resul- tados de Dyce y O’Connor en una muestra americana con los mismos instrumentos. Como se esperaba, los análisis factoriales de facetas reteniendo cinco factores mostraron un modelo de relaciones muy similar entre ambas muestras, con un coeficiente de la congruencia total de 0,92, y coeficientes de congruencia de factor aceptables, salvo para el factor Apertura (0,68). En consonancia con las predicciones de Widiger y Widiger et al. los porcentajes de correlaciones significativas estaban alrededor de 60% en ambas muestras, y la mayoría coincidían. El análisis de regresión múltiple con dimensiones también reveló un gran parecido entre los resultados americanos y españoles, Neuroticismo fue el predictor más relacionado con los trastornos de personalidad. Se encontraron diferencias en las regresiones por facetas, aunque la varianza explicada fue prácticamente la misma que en las dimensiones. Se discute la validez transcultural y el valor predictivo del NEO-PI-R sobre los trastornos de personalidad del MCMI-III, junto con las ventajas relativas de las facetas sobre las dimensiones.

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El estudio que se presenta se diseñó para estudiar la validez convergen-te y de estructura del NEO-PI-R en una muestra amplia de universitarios y de la población general. Los resultados muestran una robusta estructura de cinco factores y buena validez convergente con los adjetivos bipolares de Goldberg. Se realiza un análisis comparativo de los resultados obtenidos en este estudio con los del estudio original americano y en el estudio normativo realizado en España. Se concluye que las medias de las cinco dimensiones son parecidas al comparar las muestras del estudio actual con el americano, pero muy diferentes respecto al estudio normativo español. Ello es probablemente debido a la naturaleza de las muestras empleadas en el estudio normativo español provenientes de selección de personal, inadecuadas para un estudio normativo. La procedencia de las muestras no afecta la estructura ni la fiabilidad del NEO-PI-R, pero si afecta los baremos obtenidos. A efectos de la interpretación del test en población sana española se proporcionan baremos en percentiles y notas T.

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The present study tests the relationships between the three frequently used personality models evaluated by the Temperament Character Inventory-Revised (TCI-R), Neuroticism Extraversion Openness Five Factor Inventory – Revised (NEO-FFI-R) and Zuckerman-Kuhlman Personality Questionnaire-50- Cross-Cultural (ZKPQ-50-CC). The results were obtained with a sample of 928 volunteer subjects from the general population aged between 17 and 28 years old. Frequency distributions and alpha reliabilities with the three instruments were acceptable. Correlational and factorial analyses showed that several scales in the three instruments share an appreciable amount of common variance. Five factors emerged from principal components analysis. The first factor was integrated by A (Agreeableness), Co (Cooperativeness) and Agg-Host (Aggressiveness-Hostility), with secondary loadings in C (Conscientiousness) and SD (Self-directiveness) from other factors. The second factor was composed by N (Neuroticism), N-Anx (Neuroticism-Anxiety), HA (Harm Avoidance) and SD (Self-directiveness). The third factor was integrated by Sy (Sociability), E (Extraversion), RD (Reward Dependence), ImpSS (Impulsive Sensation Seeking) and NS (novelty Seeking). The fourth factor was integrated by Ps (Persistence), Act (Activity), and C, whereas the fifth and last factor was composed by O (Openness) and ST (Self- Transcendence). Confirmatory factor analyses indicate that the scales in each model are highly interrelated and define the specified latent dimension well. Similarities and differences between these three instruments are further discussed.

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Este artículo presenta los primeros datos del desarrollo de la versión española para adolescentes, entre 12 y 17 años, del NEO PI-R (JS NEO). Noventa y dos de los 240 ítems fueron modificados con el fin de adaptar el vocabulario de los mismos a este grupo de edad. Las propiedades psicométricas del JS NEO han sido investigadas en una muestra de 2.505 adolescentes. Los resultados muestran cómo la estructura factorial encontrada con el NEO PI-R para adultos se replica en la versión junior. Las fiabilidades de consistencia interna y estabilidad temporal de las escalas fueron adecuadas en la mayor parte de los casos. Además, la correlación entre las escalas de las versiones para adultos (NEO PI-R) y adolescentes (JS NEO) muestran que la versión para adolescentes presenta una validez de constructo adecuada.