Current Issue : July - September Volume : 2015 Issue Number : 3 Articles : 5 Articles
This paper reviews technical and clinical impact of theMicrosoft Kinect in physical therapy and rehabilitation. It covers the studies\non patients with neurological disorders including stroke, Parkinson�s, cerebral palsy, and MS as well as the elderly patients. Search\nresults in Pubmed andGoogle scholar reveal increasing interest in usingKinect in medical application. Relevant papers are reviewed\nand divided into three groups: (1) papers which evaluated Kinect�s accuracy and reliability, (2) papers which used Kinect for a\nrehabilitation system and provided clinical evaluation involving patients, and (3) papers which proposed a Kinect-based system for\nrehabilitation but fell short of providing clinical validation. At last, to serve as technical comparison to help future rehabilitation\ndesign other sensors similar to Kinect are reviewed....
The behaviour of materials is governed by the surrounding environment.The contact area between the material and the surrounding\nenvironment is the likely spot where different forms of degradation, particularly rust,may be generated.A rust prevention treatment,\nlike bluing, inhibitors, humidity control, coatings, and galvanization, will be necessary. The galvanization process aims to protect\nthe surface of the material by depositing a layer of metallic zinc by either hot-dip galvanizing or electroplating. In the hot-dip\ngalvanizing process, a metallic bond between steel and metallic zinc is obtained by immersing the steel in a zinc bath at a temperature\nof around 460?C. Although the hot-dip galvanizing procedure is recognized to be one of the most effective techniques to combat\ncorrosion, cracks can arise in the intermetallic ? layer. These cracks can affect the life of the coated material and decrease the lifetime\nservice of the entire structure. In the present paper the mechanical response of hot-dip galvanized steel submitted to mechanical\nloading condition is investigated. Experimental tests were performed and corroborative numerical and analytical methods were\nthen applied in order to describe both the mechanical behaviour and the processes of crack/cracks propagation in a bi material as\nzinc-coated material....
In this research work, experimental analyses have been done for helical tube type heat exchanger. For these analyses, helical concentric tubes have been designed and fabricated. This heat exchanger contains two tubes of 6.0 meters length which are helical in shape. And these dimensions have been checked on CAD Tool Cero Parametric 2.0. Two sets of concentric tubes have been fabricated with copper and mild steel tube materials. After fabrication effectiveness, entropy generation, exergy destruction, entransy dissipation and entransy dissipation-based thermal resistance have been evaluated. All these thermodynamic analyses have been completed at various working conditions. Finally bar charts have been generated for various working conditions which show performance of the heat exchangers. All analysis have been performed for counter and parallel flow heat exchanger....
This paper investigates the enhancement of heat transfer coefficient and Nusselt number of a nanofluid containing nanoparticles\n(?-AL2O3) with a particle size of 20nm and volume fraction of 0.1%ââ?¬â??0.3% (V/V). Effects of temperature and concentration of\nnan oparticles on Nusselt number changes and heat transfer coefficient in a double pipe heat exchanger with counter turbulent\nflow are investigated. Comparison of experimental results with valid theoretical data based on semiempirical equations shows an\nacceptable agreement. Experimental results show a considerable increase in heat transfer coefficient and Nusselt number up to\n19%ââ?¬â??24%, respectively. Also, it has been observed that the heat transfer coefficient increases with the operating temperature and\nconcentration of nanoparticles....
Kaczmarz�s alternating projection method has been widely used for solving mostly over-determined linear system of equations\nAx = b in various fields of engineering, medical imaging, and computational science. Because of its simple iterative nature with\nlight computation, this method was successfully applied in computerized tomography. Since tomography generates a matrix A\nwith highly coherent rows, randomized Kaczmarz algorithm is expected to provide faster convergence as it picks a row for each\niteration at random, based on a certain probability distribution. Since Kaczmarz�s method is a subspace projection method, the\nconvergence rate for simple Kaczmarz algorithm was developed in terms of subspace angles. This paper provides analyses of simple\nand randomized Kaczmarz algorithms and explains the link between them. New versions of randomization are proposed that may\nspeed up convergence in the presence of nonuniform sampling, which is common in tomography applications. It is anticipated that\nproper understanding of sampling and coherence with respect to convergence and noise can improve future systems to reduce the\ncumulative radiation exposures to the patient. Quantitative simulations of convergence rates and relative algorithm benchmarks\nhave been produced to illustrate the effects of measurement coherency and algorithm performance, respectively, under various\nconditions in a real-time kernel....
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