In this paper, in order to improve the low frequency noise insulation performance of a noise barrier, a new type of hybrid active noise control (ANC) system is proposed.The proposed system is a combination of 6-0 igora vibrance feedforward and feedback controller.The reference signal for the feedforward controller is generated in the feedback part,

ABSTRACT The Orinoco region, is the one with the largest area for forest development.Nonetheless, some of its soils are acid and characterized by low fertility levels, which has considerably limited plantation productivity.Therefore, this study aimed at assessing the effects of soil fertilizing and liming by using phosphorus and potassium on 34-mon

In this article, it is about thinking teaching of strategic design in the era of the pandemic.A set of upheavals of various kinds that the appearance of the Covid has set in motion, these upheavals upset the standards of several and different fields and we are interested here in the field of design in alliance with education.A field which also ensu