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Objectives
A series of constant anatomical structures were used as guide targets for screw placement to improve the accuracy of cortical screw placement and reduce surgical injury and fluoroscopy radiation. The most commonly used angles and distances between the cortical bone screw insertion point and the lateral margins of the isthmus were selected as the contents of the questionnaire.
Methods...
Ni/ZrO2 catalysts with an added second metal were prepared by impregnation method and used in CO2 methanation. X-ray diffraction, hydrogen temperature programmed reduction, hydrogen temperature programmed desorption, X-ray photoelectron spectroscopy, and in situ infrared spectroscopy measurements were taken to characterize the surface and bulk properties of the catalysts. Compared with Co and Cu,...
A stability analysis of Networked Control Systems based on the Industry Ethernet Ring Network is presented in this paper. The frame loss of the Industry Ethernet Ring Network is regarded as a random event. The sufficiency conditions for asymptotically stability of the stochastic discrete linear time-variant system are presented and proved using a new method in this paper. A Networked Control System...
In the process of super-resolution image reconstruction, corner detection and interpolation are two key technologies. In this paper, we proposed two improved methods for them. Firstly we propose a variable threshold for the allowed variation in brightness within the USAN area. The approach makes corner well-distributed and can reduce lost and false corners relatively. Experiments confirm that the...
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