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In the high-frequency PD radar engineering applications, it is easy to produce the distance ambiguity problem. The most commonly used solutions of the fuzzy algorithms are Chinese remainder theorem, one-dimensional set of algorithms and more than poor look-up table method. This paper presents a new algorithm of range ambiguity resolution, first of all estimate a set of fuzzy distance number of wavelengths...
For one exhaust muffler, this paper researches its performance of flow and noise. Muffler DoE development flow is built and RBF mathematical models of optimized objectives are established to look for Pareto optimal solutions. Through analysis, this muffler has good effect on flow but bad effect on noise. It shows that this muffler optimized direction mainly is noise elimination.
For one exhaust muffler, this paper researches its performance of flow and noise. Muffler' comprehensive evaluation system and DoE development flow are built. RBF mathematical models of evaluated objectives are established to look for Pareto optimal solutions. According to design request, this paper chooses and evaluates optimized projects from Pareto solutions. The result shows that in low and middle...
The traditional set covering models did not consider the equity of users that carried by each set. We developed a new method to solve that for the Integrated Delivering System (IDS) in medical service in Taichung city. This method requires grouping the clinics in equal market share in a way that satisfy the equity conditions given. It uses Voronoi blocks as market share for each clinic within the...
In the cell to complete module process, the cell to module (CTM) loss is inevitable. In typical process, the CTM power loss is larger than 3%. In this letter, we tried to reduce the CTM loss by studying the backsheet reflectance and the string inter space effect. The conclusion was carried out basing on the both simulation and experiment results. It shows if the reflectance of backsheet is from 70%...
If second order non-autonomous circuit with damping satisfies certain conditions, the oscillations should contain two components, the self-excited and forced oscillations. This paper, on the theoretical basis of power balance, finds the critical value of this condition. With regard to non-autonomous circuits with no damping, active power can keep balance under any situations. The two oscillation components...
Clinical application of ultrasonic image is wide. This paper researched the speckle noise suppression and image segmentation. Anisotropic diffusion filter a new filter is used to suppress the speckles. The traditional diffusion coefficient of anisotropic diffusion filer is proposed by Perona and Malik. This paper presented an improved coefficient to adapt the ultrasound image. The result verified...
Incomplete data are common problems in longitudinal studies. For incomplete longitudinal binary data, Fitzmaurice et al. (2001) discussed the impact on bias of the different estimating equation approaches where incompleteness follows a MAR (missing at random) process. They pointed out that GEE (generalized estimating equations) method proposed by Liang and Zeger (1986) has manifest bias as MAR drop-out...
In this study, reflection properties of sub-wavelength structures (SWS) on silicon nitride (Si3N4) antireflective coatings are investigated. Numerical calculation of SWS reflection based on a rigorous coupled-wave approach is conducted and compared with the measurement of fabricated samples. We compare the results of single and double-layer-antireflection (SLAR and DLAR) coatings with SWS on Si3N4...
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