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Xian, China

Lai Y.-B.,No.139 | Huang D.-Y.,No.35 | Hwang S.-J.,No.28 | Lee H.-H.,No.38 | Chang Y.-S.,No.156
Applied Mechanics and Materials

With the development of medical technology, snoring gradually has been attended in recent years. Snoring is usually mistaken for the physiological phenomenon because the body is too tired. Actually, snoring is one of symptoms in obstructive sleep apnea. Present treatments for obstructive sleep apnea include continuous positive air pressure, oral appliances and performing surgery. There are more than 20 different types of current commercially available mandibular advancement devices (MAD). Although there are so many different types of MAD available in the market, these designs are often not flexible enough to be adjusted to fit these devices to all possible cases. The aim of this study was to design and develop a new type of mandibular advancement device which used friction effect to achieve mandibular forward, and ensure it would not slide back during sleeping. The new type of mandibular advancement device could be quickly adjusted, and had 3-degree of freedom. ANSYS software was used to simulate whether the new design was strong enough. From the simulation it was found that the new innovative design was reliable and easy to be used for obstructive sleep apnea patients. © (2013) Trans Tech Publications, Switzerland. Source

Zhao C.R.,Peking University | Chi X.M.,Jing Meng Hi Technology Mansion Shangdi East Rd 5 2 and | Wang Z.Y.,Peking University | Yan W.,Peking University | Li D.,No.28
Advanced Materials Research

A new algorithm for removing pixel crosstalk in CMOS image sensors with Bayer color filter array was proposed. The algorithm can estimate low/high frequency image and provide adaptive threshold based on the human visual characteristics. By simulation experimentation on Macbeth color checker, resolution checker and real image, the experimental results revealed that this algorithm can remove the pixel crosstalk effectively. © (2014) Trans Tech Publications, Switzerland. Source

In this paper, an indoor large scale model test on the crack resistance of hydraulic tunnel structure which has first adopted the real water load in China was conducted in Dalian University of Technology. The model test can reveal the load carrying capacity and the deformation of the lining structure effectively. Based on the test results, models respectively for the mean crack width and the mean stress of reinforcing bars were developed and then compared with existing monitoring data provided by a hydroelectric station. The results shows that the model for predicting the crack width of lining structure has a good accuracy and thus is of great value in the engineering application. © (2014) Trans Tech Publications, Switzerland. Source

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