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A novel fingerprint matching algorithm based on the matching of lines is introduced in this paper. The algorithm were designed in three steps. In the first phase, an inaccurate set of matched line pairs were built by matching lines between two fingerprints. In the second phase, the spurious pairs were removed from the set by evaluating the similarity of triangles composed by line and central point...
CaO-Al2O3-SiO2 porous glass-ceramic was synthesized with different Al2O3/SiO2 ratios. DTA, XRD, SEM, 3-point bending and acid resistance as well as alkali resistance were tested in the paper to focus the effect of Al2O3/SiO2 ratio on the properties of porous pegmatite glass-ceramics. The results show that parawollastonite as the main crystal phase is kept stable with the increasing of Al2O3/SiO2 ratio,...
The effect of the gate number and location, packing pressure and time on the filling cavity pressure, distribution of welding lines, warpage distortion quantity and shrinkage of the plastics part were analyzed by means of moldflow software for plastic electric button seat. Some possible defects in the products were predicted based on the numerical simulation. The optimal runner gate, the optimal technology...
Tailor rolled blank applied in panels is one of efficient approaches for automobile realizing lightweight, yet the stamping process schemes evaluating is the keypoint. Aimming at the uncertain problem of scheme decision-making for the evaluating parameters are equal or close, the actualized measure based on theory of fuzzy barycenter quadrature was presented to evaluate TRB process schemes, this ensured...
From the concept and background of universal design, this paper introduces the principle of universal design. Based on the actual need analysis of the elderly, it discusses the approach how to design the old age product with the use of the principle of universal design.
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