Proper and healthy sleep is an element of everyday life necessary for the proper functioning of the body.Unfortunately, a large part of humanity cannot experience proper rest, due to sleep disorders such as insomnia, restless leg syndrome, obturative sleep apnea and other diseases that complicate sleep.There are not many ways to treat sleep disorde
This paper presents a mathematical model of elastic vibrations arising from shock interaction in a four-body system.The resulting model has two applications: the study of linear elastic interaction and the study of nonlinear elastic interaction.The linear elastic body model is presented in analytical form.In the transition to nonlinear interaction,
Deglaciation of high mountain rockwalls alters slope stability as rockwalls become more sensitive to modifications in environmental factors (e.g.seasonal temperature variations).In the past decades, increasing efforts focused on studying deglaciated Alpine rockwalls.Yet, currently deglaciating rockfaces remain unstudied.Here, we quantify surface ar
The use of quadrotors is proliferating across many civil applications, including those in the areas of the Internet of Things (IoT) and communications.Attitude control plays an important role in these applications, and designing a quadrotor attitude controller is a challenging task.Recently, several design methods for the attitude controller were p
The use of quadrotors is proliferating across many civil applications, including those in the areas of the Internet of Things (IoT) and communications.Attitude control plays an important role in these applications, and designing a quadrotor attitude controller is a challenging task.Recently, several design methods for the attitude controller were p