RESUMEN: El objetivo de este trabajo es el estudio de la integración del mercado español del aceite de oliva y la contrastación de la Ley de Precio Único (LPU) en dicho mercado. El análisis se lleva a cabo aplicando la técnica multivariante de cointegración a series mensuales (1987-2001)...

Statistical information of diverse official sources with respect to rain was revised and factors of productivity of the system bovine meat in the state of Sonora, Mexico, for the period from 1999 to 2008. Nine variables were analyzed statistically to obtain the Coefficient of Correlation(CC),...

The wheat occupies an important place in the feeding of the humanity and is the third cereal demanded after the maize and the rice; Sonant occupies the first one in production of wheat at national level with approximately a 45% of the seeded surface. In order to analyze the yield of wheat seedtime...

The feeding and the shelter are considered basic needs of the man and one of the options to satisfy them is through the lambs which contribute to cover them with their meat, wool and skin. For the analysis of the yield a flock took itself from twenty females and a stallion one of Pelibuey race...

The contamination of the ecosystems, over-exploitation and introduction of invading plants as well as the climatic change are considered causes of the loss of the biodiversity combined to the illegal animal traffic and plants that are exported of clandestine way to other countries which has...

The aim of this research is to estimate the marginal returns of higher education in Mexico and assess its impact on wages of individuals ending a career or graduate studies. The estimation is carried out through the procedure suggested by Heckman et al (2000 and 2001). The information used for...

The first observations of UV (290–400 nm) ever made at an agro-meteorological/radiometric station located in the metropolitan region of Maceió (9°28′S, 35°49′W, 127 m), Northeast Brazil, during 2008 are reported in this work. Solar UV radiation variability in different time scales and...

This work proposes an heuristic indicator for mid-term tendencies of stock prices based on non-linear dynamic equations combined with a graphical method inspired on cell morphology analysis. The model consists of ordinary differential equations with parameters that are fitted by means of the...

En este trabajo se realiza un abordaje de las representaciones contables para analizar cómo han evolucionado a través del tiempo, desde el marco interpretativo de la nueva historia. Representaciones tales como información, certificación y control, entre otras, desde el plano praxiológico...