Dynamically stable biped robots mimicking human locomotion have received significant attention over the last few decades. Formerly, the existence of stable periodic gaits for straight walking of passive biped walkers was well known and investigated as the notion of passive dynamic walking. This study is aimed to elaborate this notion in the case of three dimensional (3D) walking and extend it f...

In today’s aviation system, air traffic controllers manage the separation between aircraft primarily using radar displays to visualize the aircraft positions and their trajectories. They are aided by basic automated decision support tools that predict potential future conflicts. When controllers determine an aircraft must be maneuvered, they advise the aircraft flight crew using two-way radio c...

Introduction: According to the American Heart Association, survival rate after cardiopulmonary resuscitation (CPR) performed at a hospital is 25.8%. In both medical staff and general population, multiple factors cause an overestimation of effectiveness CPR maneuvers. Methods: Observational cross-sectional study. Through online survey, perception students about receiving in in-hospital setting w...

Objectives: Children aged 10 to 12 years often show dangerous maneuvers during landing, which include increased knee valgus, placing them at higher risk of anterior cruciate ligament (ACL) injuries. The study aimed to investigate the relation of the trunk and hip kinematics with the peak knee abduction angle during single-leg landing among preadolescent female soccer players. Methods: Thirty-s...

We design and simulate the motion of a swimmer, the Quadroar, with three-dimensional translation and reorientation capabilities in low-Reynolds-number conditions. The Quadroar is composed of an I-shaped frame whose body link is a simple linear actuator and four disks that can rotate about the axes of flange links. The time symmetry is broken by a combination of disk rotations and the one-dimens...

Preventing traffic accidents is of paramount importance for society's well-being. The topic particularly relevant driving automation given the high expectations about automated vehicles and difficulty in estimating reliable safety figures those complex systems. Under this premise, present manuscript investigates how to derive a benchmark model evasive lane-change maneuvers that can also be appl...

Abstract Adolescent idiopathic scoliosis is a three-dimensional deformity of the spine which frequently corrected with implantation instrumentation generally good or excellent clinical results; mechanical post-operative complications such as implant loosening and breakage are however relatively frequent. The rate associated lack consensus about surgical decision-making process; choices length, ...

Nausea and disorientation are sometimes produced by head movements during turning maneuvers in aircraft. These responses are usually attributed to Coriolis cross-coupling stimulation of the vestibular system, although it has been indicated recently that many turning maneuvers of aircraft have insufficient angular velocity to generate such effects. The purpose of the present study was to further...

In this paper we describe the algorithms and underlying machinery necessary to implement the five canonical offensive maneuvers described in U. S. Army Field Manual FM 3-21, Section II, Forms of Maneuver (envelopment, turning movement, infiltration, penetration, and frontal attack) within a computer generated forces environment. We also include descriptions of algorithms for calculating groups ...