AbstractDue to aspect-oriented mechanisms explosion, their concepts arrive to distributed systems tackling concepts as security, persistence, or synchronization, especially in middleware approaches. Regarding distributed databases, the research has been focused mainly on object-oriented databases. Based on the great impact of…

Se presentan los datos de recolecta de cuatro nuevos registros de arañas para el estado de Guanajuato: Argiope argentata (Fabricius 1775), Castianeira dorsata (Banks 1898), C. plorans (O.P.Cambridge 1898) y Selenops gracilis Muma 1953. Adicionalmente, se proporcionan algunos datos de…

LOS SISTEMAS DE RECONOCIMIENTO DE ROSTROS NORMALMENTE OBTIENEN BUENOS RESULTADOS CUANDO TIENEN DISPONIBLES CONJUNTOS DE ENTRENAMIENTO GRANDES. SIN EMBARGO, CUANDO NO HAY UN CONJUNTO DE ENTRENAMIENTO GRANDE DISPONIBLE, SU DESEMPEÑO NO ES SATISFACTORIO. EN ESTE TRABAJO PRESENTAMOS UN MÉTODO PARA…

Solar radiation data (global and diffuse) provided by the Solar Radiation Observatory of the Institute of Geophysics of the National University of Mexico, corresponding to the period 1980 to 1985, are analyzed. Two sets of data where selected. The first…

Infrared radiation data for the period 1980-1987 obtained at the Solar Radiation Observatory of the Institute of Geophysics of the National University of Mexico, is analyzed with the help of empirical and theoretical models for the transfer of long wave…

ESTE TRABAJO ESTA DIRIGIDO A ESTABLECER SI LA RELACIÓN LINEAL H2-H1=-0,03-3,586(T2-T1), QUE SE SUPONE VALIDA EN CUALQUIER PUNTO DE LA TIERRA Y EN CUALQUIER ÉPOCA DEL AÑO, Y CUYOS COEFICIENTES SE OBTIENEN HACIENDO USO DE SERIES SINCRONÍAS DE DATOS TRIHORARIOS…

On the basis of principal component analysis of long-term climatological records, regression models are formulated and forecast experiments are conducted for monthly temperature and precipitation of the Ozark Highlands area, a large area of low mountains and plateau in the…

In order to study the temperature and precipitation variations for the state of Aguascalientes, Mexico (22º, 2' N Lat, 102ºW Long), seven meteorological stations data are analyzed. The recorded data are for periods between 1921 to 1985. The possible local…

The data from six air quality stations in California were subjected to a principal components analysis involving elemental, gas, and meteorological variables. The highly intercorrelated nature of many of the variables can make the results of ordinary regresssion techniques uncertain.…

SE PRESENTA UNA PARAMETRIZACIÓN DE LA PRECIPITACIÓN MEDIA MENSUAL DESARROLLADA EN UNA ECUACIÓN DE REGRESIÓN LINEAR MÚLTIPLE EN FUNCIÓN DE LA TEMPERATURA Y DEL VIENTO HORIZONTAL. EN EL CALCULO DE LOS COEFICIENTES DE LA ECUACIÓN SE USARON LOS DATOS DE…