目的:对小儿哮喘的治疗方法进行文献计量学分析及可视化分析,总结治疗小儿哮喘的主要方法。方法:检索1999-2018年Web of Science核心数据库中小儿哮喘治疗方法的相关论文,采用文献计量学的方法,运用CiteSpace对小儿哮喘治疗方法的研究...目的:对小儿哮喘的治疗方法进行文献计量学分析及可视化分析,总结治疗小儿哮喘的主要方法。方法:检索1999-2018年Web of Science核心数据库中小儿哮喘治疗方法的相关论文,采用文献计量学的方法,运用CiteSpace对小儿哮喘治疗方法的研究作者、机构和关键词进行可视化分析。结果:共检索到小儿哮喘治疗方法的文献共2 143篇,发文量居前3位的国家为日本、美国、中国;发文较多的研究机构为哈佛大学、纳塔尔犹太医学、东京大学等。小儿哮喘治疗方法的关键词包括支气管哮喘、哮喘、儿童、炎症、表达、治疗、气道炎症等,被引频次>15次的文献共有22篇。主题词聚类分析共形成了肥大细胞、流行病学、布地奈德、肿瘤坏死因子-α、免疫疗法、泼尼松、免疫分离等7个聚类。结论:小儿哮喘的有效治疗方法中糖皮质激素和免疫疗法是当前研究的热点问题,为相关研究提供参考。展开更多
In order to improve the edge detection precision of miniature parts in microscopic field of viewa sub-pixel edge detectionalgorithm combining non-orthogonal quadratic B-spline wavelet transform algorithm and Zernike m...In order to improve the edge detection precision of miniature parts in microscopic field of viewa sub-pixel edge detectionalgorithm combining non-orthogonal quadratic B-spline wavelet transform algorithm and Zernike moment algorithm is proposed.Non-orthogonal quadratic B-spline wavelet transform algorithm is adopted to get the pixel edge of miniature parts?andthe moment invariant of Zernike moment algorithm is used for refining the pixel edge to get sub-pixel edges.A real-time detectionsystem based on the proposed algorithm for miniature parts is established.The general system structure and operational principle are given,the real-time image acquisition and detection are completed,the results of edge detection are analyzed and the detection precision is evaluated.The results show that parts size can be0.01-10mm and the detection precision reaches0.01%-0.1%.Therefore,the edge of the miniature parts can be accurately identified and the detection precision can be improved to sub-pixel level,which meets the requirements of miniature parts precision detection.展开更多
文摘目的:对小儿哮喘的治疗方法进行文献计量学分析及可视化分析,总结治疗小儿哮喘的主要方法。方法:检索1999-2018年Web of Science核心数据库中小儿哮喘治疗方法的相关论文,采用文献计量学的方法,运用CiteSpace对小儿哮喘治疗方法的研究作者、机构和关键词进行可视化分析。结果:共检索到小儿哮喘治疗方法的文献共2 143篇,发文量居前3位的国家为日本、美国、中国;发文较多的研究机构为哈佛大学、纳塔尔犹太医学、东京大学等。小儿哮喘治疗方法的关键词包括支气管哮喘、哮喘、儿童、炎症、表达、治疗、气道炎症等,被引频次>15次的文献共有22篇。主题词聚类分析共形成了肥大细胞、流行病学、布地奈德、肿瘤坏死因子-α、免疫疗法、泼尼松、免疫分离等7个聚类。结论:小儿哮喘的有效治疗方法中糖皮质激素和免疫疗法是当前研究的热点问题,为相关研究提供参考。
基金Beijing Higher Education and Teaching Project(No.2014-ms148)
文摘In order to improve the edge detection precision of miniature parts in microscopic field of viewa sub-pixel edge detectionalgorithm combining non-orthogonal quadratic B-spline wavelet transform algorithm and Zernike moment algorithm is proposed.Non-orthogonal quadratic B-spline wavelet transform algorithm is adopted to get the pixel edge of miniature parts?andthe moment invariant of Zernike moment algorithm is used for refining the pixel edge to get sub-pixel edges.A real-time detectionsystem based on the proposed algorithm for miniature parts is established.The general system structure and operational principle are given,the real-time image acquisition and detection are completed,the results of edge detection are analyzed and the detection precision is evaluated.The results show that parts size can be0.01-10mm and the detection precision reaches0.01%-0.1%.Therefore,the edge of the miniature parts can be accurately identified and the detection precision can be improved to sub-pixel level,which meets the requirements of miniature parts precision detection.