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Nowadays, the percentage of english information available in Word Wide Web is decreasing, because other languages such as: Chinese, Spanish, Arabic and Portuguese are gaining acceptance and dissemination. This phenomenon has caused that multilingualism become as one of the major challenges for intelligent documents processing, management, and retrieval. In order to deal with this problem efficiently, computer's system need to design new models or improve traditional models for documents representation. The availability of multilingual concepts repositories and semantic networks has opened an attractive approach to model documents written in different languages as concept vectors into a common space of representation. In this paper we present a new concept-based representation using Multilingual Central Repository. Our proposals apply a coarse-grained word sense disambiguation for selecting the appropriate concept according to topic and relevant domains discussed in documents. We experimentally evaluate our proposed method into a multilingual document classifications task. The results obtained in the experiments are encouraging, and demonstrate the usefulness of the proposed method. [ABSTRACT FROM AUTHOR]

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Multiplication of yam is very important from the economical point of view but studies comparing the effect of different vitamin formulations in the in vitro multiplication of this species have not been carried out. The influence of adding different vitamin formulations, in the culture medium D-571 on in vitro multiplication of yam uninodal segments (Dioscorea alata L) was evaluated in the present research. Buds number, shoot length and leaves number by explants were determined after 4, 5 and 6 weeks of culture. Results demonstrated that the most appropriate vitamin formulations in the in vitro multiplication medium to facilitate growth and development of yam uninodal segments was the one proposed by Murashige and Skoog, Gamborg et al. and Morel and Wetmore modified. [ABSTRACT FROM AUTHOR]

The soil fertility is the fundamental base to reach an agriculture sustainable and the increment required in the plant productivity together to a decrease in the agro technical works practice. The present research work was developed with the objective of determining the influence of the addition of different concentrations of filter cake in the propagation of coconut. The experiment was developed in the zonal unit "Las Coloradas" of the municipality of Niquero in Granma province, during a period of 7 months on a Phersialitic soil, where the following treatments: T1, Soil without filter Cake addition;T2, 50 % soil + 50 % filter Cake; T3, 25 % soil + 75 % filter Cake, and T4, 100 % of filter Cake were established. Apart from the 3 months until the 7 months of cultivation the following variables were determined monthly: germination percentage, stem length, stem thick, number of leaves, length of the leaves and wide of the leaves. The number of roots was evaluated to the 7 months. An random blocks experimental design was applied with two way Anova and Duncan test for means comparison. The reached results demonstrated that the addition of different concentrations of filter cake in the soil on the coconut propagation in the seedling phase has a significant effect in the quality and quantity of the obtained plantlets. [ABSTRACT FROM AUTHOR]