BACKGROUND The purpose of this study was to determine whether joint mobility is associated with motor performance in children referred for Developmental Coordination Disorder (DCD-group) in contrast to a randomly selected group of children between 3-16 years of age (Random-Group). METHODS 36 children with DCD and 352 typically developing children (Random-Group) participated. Hypermobility was...

Gravitational force level is well-known to influence arm motor control. Specifically, hyper- or microgravity environments drastically change pointing accuracy and kinematics, particularly during initial exposure. These modifications are thought to partly reflect impairment in arm position sense. Here we investigated whether applying normogravitational constraints at joint level during micrograv...

This paper describes the design, implementation, and machine learning issues associated with developing a control system for a serpentine robotic manipulator. The purpose of the control system is to provide autonomous/teleoperative control of the serpentine robotic manipulator, as well as full robotic control during operation of the manipulator within an enclosed environment such as an undergro...

We study the nonlinear taxation of internationally mobile workers in general equilibrium. Contrary to conventional wisdom, equilibrium, migration lowers bottom tax rate but raises top rate, making optimal system more progressive and moving rates closer those an economy with fixed wages. The intuition is that governments attract high-skilled by amplifying pre-tax wage inequality partly offsettin...

Pain is an inevitable part of chronic subacute inflammatory disorders and although there are many analgesics available for chronic mild intermittent joint pain; topical gel are often preferred; being effective, safe, convenient and economical. These topical gel contain counterirritants and rubefacients, which had been well studied in terms of its pharmacological properties. This study was plann...

This paper proposes a general equilibrium model for multi-passenger ridesharing systems, in which interactions between drivers, passengers, platforms, and transportation networks are endogenously captured. Stable matching is modeled as an problem no driver or passenger can reduce his/her disutility by unilaterally switching to another sequence. one of the first studies that explicitly integrate...

We review observational tests for the homogeneity of the Universe on large scales. Redshift and peculiar velocity surveys, radio sources, the X-Ray Background, the Lyman-α forest and the Cosmic Microwave Background are used to set constraints on inhomogeneous models and in particular on fractal-like models. Assuming the Cosmological Principle and the FRW metric, we estimate cosmological paramet...

This paper investigates the fault-tolerant control of hyper-redundant spatial manipulators. The standard resolved rate control law using the pseudoinverse is modified to account for joint failures. To combat the problem of extremely high joint velocity solutions generated near singular configurations by the pseudoinverse, the singularity robust inverse is employed. A method to compute an optima...

We herein report a rare case of an intertrochanteric fracture complicated with an ankylosed hip joint in a 76-year-old man. Generally, operative treatment is performed for elderly people with intertrochanteric fractures to prevent general complications, maintain mobility, and release pain. However, intertrochanteric fractures of ankylosed hip joints are rare, and the optimal surgery for this co...