Skill, the ability to perform a challenging behaviour well, has been shown be an important determinant of success in variety contexts, including human sports, animal courtship and, most recently, contests. Because skilful movement requires precise motor control, skill is assumed underpinned by traits that determine these abilities. However, while individual's potential effective movements (know...

statement of problem: the goal of a successful endodontic surgery is to establish an adequate seal in apical region. therefore during surgery, root-end resection is essential for an appropriate situation and proper access.purpose: the aim of this study was to determine the most appropriate root-end resection angle to establish adequate apical seal in periapical surgerymaterials and methods: for...

Aircraft which are required to fly effectively at high angles-of-attack must overcome two fundamental difficulties: generally poor dynamic characteristics, especially with respect to damping, and low control authority of conventional aerodynamic effectors. One solution to improve closed-loop tracking of pilot commands is to employ a model-following controller approach, whereby an aircraft with ...