With the advent of commercial image-guided radiotherapy, daily correction of the setup uncertainty is feasible. It is beneficial to understand the dependence of the probability density function (pdf) of the corrected setup variation on the action level, localization uncertainty and re-positioning uncertainty so that an appropriate action level is used. Also, that pdf can be used in treatment pl...

Roads are subjected to vehicle traffics with different loads and velocities. Geogrid reinforcement is of the best methods for road improvement due to the ease of construction, delay in damage development and financial efficiency. This study evaluates pavement response under different loads and velocities, before and after geogrid reinforcement. A finite element software (ABAQUS) is used for num...

We consider the problem of autonomously locating a number of asynchronous sensor nodes in a wireless network. A strong focus lies on reducing the processing resources needed to solve the relative positioning problem, an issue of great interest in resourceconstrained wireless sensor networks. In the first part of the paper, based on a well-known derivation of the Cramér-Rao lower bound for the a...

The optimal positioning of salt-bridging interactions in a parallel alpha-helical homotrimeric coiled coil has been explored in a metal ion-assembled polypeptide trimer of 60 residues; arginine-glutamate pairs are more stabilizing than the corresponding lysine-glutamate pairs, and optimal stabilization is obtained with positively charged arginine residues at the c positions of the alpha-helical...

Airborne synthetic aperture radar (Airborne SAR) can accurately locate key targets and regions by using the flight parameters of aircraft relative position information between target which be obtained from airborne positioning orientation system (POS). In course flight, will deviate ideal path due to atmospheric turbulence, results in calculation deviating actual position. order improve accurac...

PURPOSE Several authors have recommended a 2 mm tolerance for multileaf collimator (MLC) positioning in sliding window treatments. In volumetric modulated arc therapy (VMAT) treatments, however, the optimal tolerance for MLC positioning remains unknown. In this paper, the authors present the results of a multicenter study to determine the optimal tolerance for both techniques. METHODS The pro...

AIMS Prosthesis-patient mismatch (P-PM) is an important determinant of morbidity and mortality following open aortic valve replacement. The aims of this study were to report its incidence and determinants following transcatheter aortic valve implantation (TAVI) with the Corevalve bioprosthesis, which have-thus far-not been described. METHODS AND RESULTS Patients with severe calcific aortic st...

Hong Kong is a highly urbanized city with a very complicated public transport system. Local residents and tourists rely heavily on public transport for everyday travelling. To assist people in making better use of the public transport system, a multi-modal public transport query and guiding LBS system for mobile users is developed. This system can automatically determine the mobile device posit...

This paper investigates the design of composite nonlinear feedback (CNF) control law for an underactuated gantry crane system to achieve positioning and anti-swing control. First, the dynamic model of a nonlinear underactuated gantry crane system is established by using the Euler-Lagrange modeling method. Then, the CNF control law is designed for the system to improve the anti-swing performance...