Weichao Liu

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OBJECTIVE To analyze the success rates and prognosis of heart valvuloplasty and valve replacement for elderly patients, and to provide clinical evidence. METHODS A total of 1240 patients who received heart valve surgeries in our hospital from June 2004 to October 2014 were selected and retrospectively analyzed. They were divided into two groups based on(More)
— The rules in RoboCup soccer more and more discourage a solely color-based orientation on the soccer field. While the field size increases, field boundary markers and goals become smaller and less colorful. For robust game play, robots therefore need to maintain a state and rely on more subtle environmental clues. Field lines are particularly interesting,(More)
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