Quantum information processing devices need to be robust and stable against external noise and internal imperfections to ensure correct operation. In a setting of measurement-based quantum computation, we explore how an intelligent agent endowed with a projective simulator can act as controller to adapt measurement directions to an external stray field of unknown magnitude in a fixed direction....

A comparative study of methods for treating fractures of the distal half of the femur was carried out prospectively in the five-year period January 1973 to December 1977. The three methods compared were conservative treatment on a Thomas' splint, application of a knee-hinged cast-brace at five to seven weeks, and intramedullary nailing. The time in bed, in hospital and to union were compared as...

Athermal two-dimensional granular systems are exposed to external mechanical noise leading to Brownian-like motion. Using tunable repulsive interparticle interaction, it is shown that the same microstructure as that observed in colloidal suspensions can be quantitatively recovered at a macroscopic scale. To that end, experiments on granular and colloidal systems made up of magnetized particles ...

Index Terms—sliding mode control, uncertainty and disturbance estimation, flexible joint. Abstract—This paper proposes sliding mode control based on uncertainty and disturbance estimator (UDE), for trajectory tracking control of flexible joint robotic system. UDE is used to estimate plant uncertainty and disturbances. The controller does not requires knowledge of plant uncertainty and external ...

Magnetic resonance imaging is playing a significant role in applying the 3Rs to neuroscience studies using non-human primates. MRI scans are contributing refinement by enhancing selection and assignment of animals, guiding manufacture custom-fitted recording head fixation devices, assisting with diagnosis health issues their treatment. also being used better understand impact procedures on welf...

BACKGROUND Delayed bone union, nonunion or osteonecrosis often occur after femoral neck fractures in young adults. Secondary bone healing requires strong internal fixation, intramedullary pressure reduction and early functional exercise. OBJECTIVE To compare bone healing of femoral neck fractures treated with hollow-bone-graft dynamic hip screws (Hb-DHS) and standard dynamic hip screws (DHS) ...

We developed a new approach to produce individual immobilization devices for the head based on MRI data and 3D printing technologies. The purpose of this study was to determine positioning accuracy with healthy volunteers. 3D MRI data of the head were acquired for 8 volunteers. In-house developed software processed the image data to generate a surface mesh model of the immobilization mask. Afte...

BACKGROUND A new method of fixation for intertrochanteric hip fractures that involves the use of an intramedullary nail that interlocks proximally into the femoral head was introduced in the early 1990s. Anecdotal observation of practice patterns during the Part II (oral) American Board of Orthopaedic Surgery examination suggested that the use of this method had increased substantially in recen...

implanting anti-protrusio devices was based on an attempt to provide increased contact area between the implant and remaining pelvic bone to dissipate forces within the cement and decrease the likelihood of implant migration. Early devices relied on cement as the sole source of fixation and these implants were associated with a high failure rate at short-term follow-up. Although the use of thes...