donde se encontró una alta de concentración Plomo en el rio y en el agua de consumo llegando a concentraciones de 194,889 ± 0,3182 µg/l en el centro poblado de San Jacinto y 99,079 ± 0,0481 µg/l en el centro poblado de Oidor, además se encontró un índice correlación inversa de baja intensidad para todos los metales pesados analizados con valores de -0,62 (pb), -0.8 (cd) y -0,65 (cr), lo que nos indica un descenso en las concentraciones presentes en los domicilios, a excepción de algunos puntos donde se evidencia un aumento como son el caso de Rica Playa, La Capitana, Higuerón y Oidor, pueblos que no cuentan con un sistema de tratamiento de agua.Palabras clave: agua de consumo; agua superficial; río Puyango; metales pesados; correlación de Pearson.
Public transport contributes to the welfare of citizens and improves the social development of cities. Worldwide, local authorities dedicate between 15 to 20 per cent of their yearly budget to urban transport. The intelligent transport aid systems (ITA systems) are integral control systems that, when applied to a transportation network, can offer the required means to know, regulate and manage the available resources in real time. The main objective of this research consists of examining the relationship between investments in intelligent transport aid systems (ITA systems) and the efficiency, effectiveness and improvement of the service quality of firms offering urban transport services in local environments. Results show that the investment in Intelligent Transport Aid Systems generates a better performance in firms operating urban transport along time.
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