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of the Monin-Obukhov Similarity Theory. Boundary Layer Meteorology 119:431–447. Foken T. 50 Years of the Monin-Obukhov Similarity Theory Boundary

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The 2013 reform of the European Common Agricultural Policy tries to support farmers willing to follow environment- friendly rural practices, by the so called “green payment”. Within this framework, it is suggested that governments and regions should maintain a certain ratio of the area of permanent grasslands to the total Utilized Agricultural Area according to the greening rules of the reform. However, the weak economic performance of permanent grasslands does not encourage farmers to invest into their conservation. This fact persuaded us to revisit our old unpublished data, obtained by experiments on the use of chemical fertilizers in permanent grasslands. By this reanalysis we hope to further support the new European policy with the perspective to find a trade-off between the conservation of the biodiversity and the economic productivity of permanent grasslands. Of the many possibilities we have chosen to present the results of two experiments, one in Italy and the other in Slovakia. The main reason for this choice was that these two studies followed complementary strategies of fertilization that appeared useful to detect both the single and the synergistic effects of N, P, and K on the relationships between yield and species diversity. The results of cluster and diversity analysis suggest that chemical fertilization should be carefully planned according to soil conditions, since different treatments may have the same effect on the floristic and vegetation patterns of grasslands. These results, according to similarity theory, allow to choose the least expensive and polluting combination of N, P and K from those that, according to the species combinations, are assigned to the same cluster.

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The theory (or method) of similarity and modeling is widely applied in science and in technical applications (Venikov 1976). If a limited amount of experimental data is at disposal and if they are processed in a dimensionfree form (as similarity numbers), then it is possible to transfer the results from one object to the other, where such measurements cannot be carried out. This method is most often applied in hydraulics, heat techniques, etc., which are in connection with the motion of fluids or gases. Using the similarity method, practically usable values were obtained, which could not be got by any other method. The essence of the similarity method is presented in the actual case by a practical exemplar. It is supposed that the reader is somewhat acquainted with this field of science. In the case of geodesists, it is advised to study the basic ideas of the method to avoid difficulties which would then in the opinion of the author help to detect the significance of the present paper.

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vegetation systems from the perspective of similarity theory . Plant Biosyst. 146 : 797 – 804 . Feoli , E and P. Ganis. 1985 . Comparison of floristic vegetation types by

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Abstract  

The equation for calculation of the activation energy of the diffusion of the evolved products through the matrix (E) from a single TG curve were proposed by solving Fick's laws. The solution is based on the similarly theory by utilizing a Fourier number. The proposed method was examined by using mass loss data for the dehydroxylation of some micas with and without FeO (muscovite and its varieties and lepidolite) as determined from their TG curves. TheE values for the first stage of the dehydroxylation of these micas areE 1,=85±10 kJ mol−1; for the final stageE 2=380±40 kJ mol−1 and for the mass loss connected with fluorineE F=85±10 kJ mol−1.

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Magyar Pszichológiai Szemle
Authors: Tamás Bereczkei, Petra Gyuris, Panna Köves, and László Bernáth

465 Dunbar, R. I. M. (1989) Genetic similarity theory needs more development. Behavioral and Brain Sciences, 12 , 520-521. Genetic similarity theory needs more

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. 2012. Diversity patterns of vegetation systems from the perspective of similarity theory. Plant Biosyst. 146: 797–804. Feoli E. Diversity patterns of vegetation systems from the

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similarity, mate choice, and group selection. Behavioral and Brain Sciences, 12, 503–518. Rusthon , J. P., Nicholson , I. R. (1988) Genetic similarity theory, intelligence, and human matechoice. Ethology and

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. 15. Lapides , IL . 1997 Evaluation of kinetic parameters from a single TG curve based on the similarity theory and process symmetry . J Therm Anal. 50 : 269 – 277 . 10.1007/BF01979567

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