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The saphenous vein is considered a common conduit for coronary artery bypass grafting. A major limitation involved is the high graft occlusion rate. We evaluated the effect and mechanism of andrographolide on intimal hyperplasia (IH) of autografted rat veins. For this purpose, 140 female Sprague–Dawley rats were randomly divided into experimental (andro) and control groups. Andro rats received andrographolide...
The coordinative development problem of urban traffic and transportation system was studied using multiattribute utility theory. Through system analysis and goal resolvability, the synthetic evaluation indices of supply and demand level were established respectively about urban traffic and transportation system and social and economic system by multi-attribute utility function. The concept of coordination...
This paper puts forward a adaptive inverse saleh function predistorter based on direct learning architecture according to the feature of saleh model to compensate for the nonlinearity of Power Amplifiers (PA). In this paper, we focus directly on a particular PA model and building a corresponding predistorter, After approximating the nonlinear static part by the four parameters function, Memoryless...
This paper puts forward the piecewise linear predistorter based on the PSO and bring out a FPGA implementation scheme based on the look-up table with low complexity when used in the high-speed predistortion system. Memoryless piecewise linear model and memory piecewise linear model are adopted according to the memory feature of power amplifiers. After approximating the nonlinear part by a piecewise...
An empirical study is conducted to examine learner strategies on EFL E-learning platform in China. Both survey data and quasi-experimental results support positively the necessity and importance of theory-driven and data-based e-learning strategy training for tertiary level learners on e-learning platform in China.
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