[目的/意义]在新一代信息技术掀起电子化公共服务研究新热潮之际,从历史演化的纵向维度和全球比较的横向维度对国内外研究进行对比分析,有助于推动理论和实践发展。[方法/过程]选取Web of Science数据库中2597篇外文文献以及CNKI数据库...[目的/意义]在新一代信息技术掀起电子化公共服务研究新热潮之际,从历史演化的纵向维度和全球比较的横向维度对国内外研究进行对比分析,有助于推动理论和实践发展。[方法/过程]选取Web of Science数据库中2597篇外文文献以及CNKI数据库中845篇中文文献作为研究对象,运用Cite Space 5.0对突现词、高频关键词、高被引文献等进行处理,绘制相应的知识图谱,对比分析国内外研究的演化阶段、研究热点和知识基础。[结果/结论]研究发现,国内外研究均经历了从关注信息服务、办事服务到关注协同服务三个阶段的演化;国外研究更为关注技术的用户采纳,具有显著的用户导向特点;国内研究更多强调理念引领和政策解读,具有明显的供给驱动特点。国内未来研究应注重制度优势和理论积累。展开更多
Endoscopic submucosal dissection(ESD) is a highly refined technique compared to conventional endoscopic mucosal resection.It enables complete resection of early gastric cancer(EGC) which has no possibility of lymph no...Endoscopic submucosal dissection(ESD) is a highly refined technique compared to conventional endoscopic mucosal resection.It enables complete resection of early gastric cancer(EGC) which has no possibility of lymph node metastasis.Indication for ESD of EGC generally entails early gastric cancer confined to the mucosa with well differentiated histology,though there are clinically suitable expanded criteria.As ESD requires specific skill and expertise,endoscopists need to be familiarized with basic methods and the use of special devices.The essence of the technique is to dissect the submucosal layer with direct vision and maintain thecutting plane above the underlying proper muscle layer.Although there are some differences in the detailed technical aspect,the cardinal method of ESD is now well established and standardized.Furthermore,research and development of new ESD devices that render more efficient,safe ESD are still in progress to improve the overall result of ESD on early gastric cancer.展开更多
Endoscopic submucosal dissection(ESD) is a widely accepted treatment for early gastric cancer(EGC),especially in Korea and Japan.The criteria for the therapeutic use of ESD for EGC have been expanded recently.However,...Endoscopic submucosal dissection(ESD) is a widely accepted treatment for early gastric cancer(EGC),especially in Korea and Japan.The criteria for the therapeutic use of ESD for EGC have been expanded recently.However,attention should be drawn to the technical feasibility of the ESD treatment which depends on a lesion's location,size or fibrosis level,or operator's experience.In the case of a lesion with a high level of difficulty,a more experienced operator is required.Thus,the treatment for a lesion with a high level of difficulty should be performed according to the degree of the operator's experience.In this paper,the authors describe the ESD procedure for lesions with a high level of difficulty.展开更多
文摘[目的/意义]在新一代信息技术掀起电子化公共服务研究新热潮之际,从历史演化的纵向维度和全球比较的横向维度对国内外研究进行对比分析,有助于推动理论和实践发展。[方法/过程]选取Web of Science数据库中2597篇外文文献以及CNKI数据库中845篇中文文献作为研究对象,运用Cite Space 5.0对突现词、高频关键词、高被引文献等进行处理,绘制相应的知识图谱,对比分析国内外研究的演化阶段、研究热点和知识基础。[结果/结论]研究发现,国内外研究均经历了从关注信息服务、办事服务到关注协同服务三个阶段的演化;国外研究更为关注技术的用户采纳,具有显著的用户导向特点;国内研究更多强调理念引领和政策解读,具有明显的供给驱动特点。国内未来研究应注重制度优势和理论积累。
文摘Endoscopic submucosal dissection(ESD) is a highly refined technique compared to conventional endoscopic mucosal resection.It enables complete resection of early gastric cancer(EGC) which has no possibility of lymph node metastasis.Indication for ESD of EGC generally entails early gastric cancer confined to the mucosa with well differentiated histology,though there are clinically suitable expanded criteria.As ESD requires specific skill and expertise,endoscopists need to be familiarized with basic methods and the use of special devices.The essence of the technique is to dissect the submucosal layer with direct vision and maintain thecutting plane above the underlying proper muscle layer.Although there are some differences in the detailed technical aspect,the cardinal method of ESD is now well established and standardized.Furthermore,research and development of new ESD devices that render more efficient,safe ESD are still in progress to improve the overall result of ESD on early gastric cancer.
文摘Endoscopic submucosal dissection(ESD) is a widely accepted treatment for early gastric cancer(EGC),especially in Korea and Japan.The criteria for the therapeutic use of ESD for EGC have been expanded recently.However,attention should be drawn to the technical feasibility of the ESD treatment which depends on a lesion's location,size or fibrosis level,or operator's experience.In the case of a lesion with a high level of difficulty,a more experienced operator is required.Thus,the treatment for a lesion with a high level of difficulty should be performed according to the degree of the operator's experience.In this paper,the authors describe the ESD procedure for lesions with a high level of difficulty.
