Accurate localization of nodes is one of the key Vinyl issues of wireless sensor network (WSN).Because the disadvantages of the classical Amorphous algorithm will produce large localization error in the process of localization, an improved localization algorithm is proposed in this paper to solve the problem.The improved algorithm introduces the re
Parametric speaker can radiate an audible sound beam with sharp directivity by using the nonlinear interaction of ultrasonic waves.In recent years, the highly directional audible sound generated by the parametric speaker has been applied to various applications.For example, applications such as active noise control, sound absorption coefficient mea
ABSTRACT: To assess the success of a segregated medicated early weaning protocol for elimination of Actinobacillus pleuropneumoniae, ten consecutive batches of 100 pigs per batch weaned at 7-9 days of age were monitored at 21-22 weeks of age looking for presence of productive cough, presence of Face Masks antibodies against the agent and pleuropneu