The fuzzy integration evaluation method （FIEM） is studied in order to select the best orbital elements from the multi-group initial orbits determined by a satellite TT＆C （Tracking, Telemetry and Control） center w...The fuzzy integration evaluation method （FIEM） is studied in order to select the best orbital elements from the multi-group initial orbits determined by a satellite TT＆C （Tracking, Telemetry and Control） center with all kinds of data sources. By employing FIEM together with the experience of TT＆C experts, the index system to evaluate the selection of the best initial orbits is established after the data sources and orbit determination theories are studied. Besides, the concrete steps in employing the method are presented. Moreover, by taking the objects to be evaluated as evaluation experts, the problem of how to generate evaluation matrices is solved. Through practical application, the method to select the best initial orbital elements has been proved to be flexible and effective The originality of the method is to find a new evaluation criterion （comparing the actually tracked orbits） replacing the traditional one （comparing the nominal orbits） for selecting the best orbital elements.展开更多
目的:探讨经右胸全胸腔镜下体外循环停跳下心房粘液瘤切除术的可行性,评价其临床安全性及应用价值。方法:回顾性分析2011年12月至2018年12月,重庆市人民医院(中国科学院大学重庆医院)接受完全胸腔镜下心脏粘液瘤切除术的患者32例,其中,...目的:探讨经右胸全胸腔镜下体外循环停跳下心房粘液瘤切除术的可行性,评价其临床安全性及应用价值。方法:回顾性分析2011年12月至2018年12月,重庆市人民医院(中国科学院大学重庆医院)接受完全胸腔镜下心脏粘液瘤切除术的患者32例,其中,左心房粘液瘤30例,右心房粘液瘤2例,男14例,女18例。术前心功能分级(New York Heart Association,NYHA),Ⅰ级8例,Ⅱ级17例,Ⅲ级7例。股动静脉插管、右颈内静脉插管引流建立体外循环,全胸腔镜下经右胸副操作孔阻断升主动脉,心脏停跳后经右心房和房间隔入路行粘液瘤切除。结果:无围术期死亡,手术时间[(176.13±8.12)min],体外循环时间[(132.19±6.45)min],主动脉阻断时间[(70.94±3.80)min]。术后48h出血量[(283.71±44.28)mL];10例患者术中输血,输血率31.25%;中位输血量2(0,4)u。术中行食道超声检查及出院前复查心脏超声,心脏粘液瘤均完整切除,无残余心脏粘液瘤。各瓣膜功能良好。目前随访期间患者无再发心脏粘液瘤,无心脏瓣膜疾病再次心脏手术,无严重心脑血管并发症。结论:体外循环下经右胸全胸腔镜下行心房粘液瘤切除安全可行,其临床疗效确切,且手术创伤和术后瘢痕更小,利于术后患者恢复。展开更多
基金This project was supported by the Evaluate Quality of Satellite TT&C Mission(C0112)
文摘The fuzzy integration evaluation method （FIEM） is studied in order to select the best orbital elements from the multi-group initial orbits determined by a satellite TT＆C （Tracking, Telemetry and Control） center with all kinds of data sources. By employing FIEM together with the experience of TT＆C experts, the index system to evaluate the selection of the best initial orbits is established after the data sources and orbit determination theories are studied. Besides, the concrete steps in employing the method are presented. Moreover, by taking the objects to be evaluated as evaluation experts, the problem of how to generate evaluation matrices is solved. Through practical application, the method to select the best initial orbital elements has been proved to be flexible and effective The originality of the method is to find a new evaluation criterion （comparing the actually tracked orbits） replacing the traditional one （comparing the nominal orbits） for selecting the best orbital elements.
文摘目的:探讨经右胸全胸腔镜下体外循环停跳下心房粘液瘤切除术的可行性,评价其临床安全性及应用价值。方法:回顾性分析2011年12月至2018年12月,重庆市人民医院(中国科学院大学重庆医院)接受完全胸腔镜下心脏粘液瘤切除术的患者32例,其中,左心房粘液瘤30例,右心房粘液瘤2例,男14例,女18例。术前心功能分级(New York Heart Association,NYHA),Ⅰ级8例,Ⅱ级17例,Ⅲ级7例。股动静脉插管、右颈内静脉插管引流建立体外循环,全胸腔镜下经右胸副操作孔阻断升主动脉,心脏停跳后经右心房和房间隔入路行粘液瘤切除。结果:无围术期死亡,手术时间[(176.13±8.12)min],体外循环时间[(132.19±6.45)min],主动脉阻断时间[(70.94±3.80)min]。术后48h出血量[(283.71±44.28)mL];10例患者术中输血,输血率31.25%;中位输血量2(0,4)u。术中行食道超声检查及出院前复查心脏超声,心脏粘液瘤均完整切除,无残余心脏粘液瘤。各瓣膜功能良好。目前随访期间患者无再发心脏粘液瘤,无心脏瓣膜疾病再次心脏手术,无严重心脑血管并发症。结论:体外循环下经右胸全胸腔镜下行心房粘液瘤切除安全可行,其临床疗效确切,且手术创伤和术后瘢痕更小,利于术后患者恢复。
基金National Natural Science Foundation of China(51334008)National Key Research and Development Program of China(2022YFC2904505)Project of Basic Science Center of the National Natural Science Foundation(72088101)。
