El presente estudio tuvo como objetivo principal determinar la relación entre la confianza fiscal y el cumplimiento tributario en comerciantes del Mercado Central en Trujillo, 2024. Para alcanzar el objetivo se realizó una investigación no experimental, correlacional y transversal. Se empleó como técnica de investigación la encuesta y como instrumento el cuestionario que empleó respuestas de formato Likert, el cual se aplicó a 203 comerciantes. Los resultados del estudio permiten conocer que existe un nivel de confianza tributaria medio con el 48.28% de los comerciantes. Además, el nivel de cumplimiento tributario alcanzado llega al 55.67%. Los resultados de correlación permiten hallar una relación directa y significativa entre la confianza fiscal y el cumplimiento tributario con un valor de 0.680 y un nivel de significancia menor a 0.05; por lo cual se determinó la existenci...

We present the effects of the confinement and physical distancing policies applied during the COVID-19 pandemic on the concentrations of PM10, PM2.5, NO, NO2 and O3 in 16 cities in central and southern Chile. The period between March and May in 2020 was compared with the corresponding months during 2017–2019, using surface data and satellite information. The relative percent changes in the concentration of atmospheric pollutants, and the meteorological variables observed between these two periods were used to quantify the effects of the lockdowns on the local air quality of the urban areas studied. The results showed statistically significant changes in 11 of the 16 cities. Significant relative changes between +14% and –33% were observed for PM10 in 9 cities; while statistically significant changes between –6% and –48% were evident for PM2.5 in 10 cities. Significant decreases be...

The implementation of confinement and physical distancing measures to restrict people's activities and transit in the midst of the COVID-19 pandemic allowed us to study how these measures affect the air quality in urban areas with high pollution rates, such as Santiago, Chile. A comparative study between the concentrations of PM10, PM2.5, NOx, CO, and O3 during the months of March to May 2020 and the corresponding concentrations during the same period in 2017–2019 is presented. A combination of surface measurements from the air quality monitoring network of the city, remote satellite measurements, and simulations of traffic activity and road transport emissions allowed us to quantify the change in the average concentrations of each pollutant. Average relative changes of traffic emissions (between 61% and 68%) implied statistically significant concentrations reductions of 54%, 13%, and ...