群医学
群医学-
方法随机整群抽取医学低年级学生，集中研究对象，由专家进行专题讲座。
Methods Junior grade students of medical school were chosen randomly by cluster sampling .
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等比（25%）分层整群抽样法从医学及其相关专业抽出515名1~3年级学生进行测试。
Via proportional ( 25 % ) stratify sampling , 515 students from various healthcare majors were sampled and tested .
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本文将改进的粒子群算法应用于医学显微图像分割，并比较分析实验结果，具体工作如下：（1）介绍了精子辅助分析系统，以及本研究的背景和意义。
In this paper , the advanced PSO is applied to medical micrograph segmentation , and the analysis results are compared . Specifically as follows : ( 1 ) Assisted Sperm Analysis System is introduced , also the background and significance of this study .