目的构建并评价以导航护士为主导的医护患加速康复临床护理路径在肺癌胸腔镜切除患者围手术期管理中的作用。方法采用方便抽样法选取2022年7月—2023年7月在某三级甲等医院行胸腔镜切除术的肺癌患者128例为研究对象,按照患者入院的先后...目的构建并评价以导航护士为主导的医护患加速康复临床护理路径在肺癌胸腔镜切除患者围手术期管理中的作用。方法采用方便抽样法选取2022年7月—2023年7月在某三级甲等医院行胸腔镜切除术的肺癌患者128例为研究对象,按照患者入院的先后顺序,其中2022年7月—2023年1月入院的患者为对照组,2023年2-7月入院的患者为观察组,每组64例。对照组根据科室制定的常规护理措施实施护理,观察组梳理“医-护-患”三个角色需要完成的内容,构建导航护士主导实施的加速康复临床护理路径并开展培训与实施,比较2组的干预效果。结果2组患者术后首次下床时间、尿管拔除时间、胸管留置时间、术后中度及以上疼痛发生率、住院费用、住院时间、加速康复外科(enhanced recovery after surgery,ERAS)满意度比较均有统计学意义(P<0.05)。结论实施医护患加速康复临床护理路径保障了患者围手术期加速康复护理措施的有效实施,有利于患者的康复进程,缩短住院时间,减少住院费用,提高患者满意度。展开更多
Global navigation satellite system occultation sounder (GNOS) Fengyun-3C was launched successfully on September 23, 2013, which carried GPS/BDS receiver for the first time. This provides the convenience to study the e...Global navigation satellite system occultation sounder (GNOS) Fengyun-3C was launched successfully on September 23, 2013, which carried GPS/BDS receiver for the first time. This provides the convenience to study the enhancement results of low earth orbiter satellite (LEO) to BDS precise orbit determination (POD). First the data characteristic and code observation noise of GNOS are analyzed. Then the enhancement experiments in the case of global and regional ground observation stations layout are processed with four POD schemes: BDS single system, GPS/BDS double system, BDS single system with GNOS observations, GPS/BDS double system with GNOS observations. The precision of BDS orbits and clocks are compared via overlapping arcs. Results show that in the case of global station layout the along directional precision of GEO satellite has the biggest improvement, with the improvement percentage 60%. Then the precision of cross direction and the along direction of remaining satellites shows the second biggest improvement. The orbit precision of BDS-only POD in part of observation arcs some satellite even suffers a slight decline. The root mean square (RMS) of overlapping clock difference of visible arcs in GPS/BDS POD experiments improves by 0.1 ns level. As to the experiments of regional station layout with 7 ground stations, the orbit and clock overlapping precision and orbit predicting precision are analyzed. Results show that the predicting precision of BDS GEO satellites in the along direction improves by 85%. The remaining also has a substantial improvement, with the average percentage 21.7%. RMS of overlapping clock difference of visible arcs improves by 0.5 ns level.展开更多
从导航增强与弹性定位、导航和授时(Positioning,Navigation and Timing,PNT)两个方向,系统阐述基于低轨星座的PNT性能提升能力,包括全球天基监测、全球准实时高精度、可信认证、弹性应急备份等。综合国内外低轨星座发展现状,分析了低...从导航增强与弹性定位、导航和授时(Positioning,Navigation and Timing,PNT)两个方向,系统阐述基于低轨星座的PNT性能提升能力,包括全球天基监测、全球准实时高精度、可信认证、弹性应急备份等。综合国内外低轨星座发展现状,分析了低轨星座实现PNT性能提升的两种实现途径:一是在导航频段播发信号实现性能提升,可与现有各全球卫星导航系统(Global Navigation Satellite System,GNSS)实现良好的兼容与互操作性能;二是利用通信频段播发导航通信(导通)融合信号,实现与现有导航频段信号的弹性应急备份。二者均可实现定位精度及其收敛时间、完好性、安全性等性能提升,但因信号频段和业务类型差异,两者的技术体制、实现能力和代价有所不同。为此,文章从星载接收与处理技术、导航增强和导通融合信号体制设计、同时同频收发干扰抑制技术、弹性终端融合接收处理技术等方面,分析了实现导航增强和弹性PNT服务的关键技术,最后给出了基于低轨星座的PNT性能提升的发展建议。文章的研究成果,有助于进一步探索低轨星座的潜力,促进全球卫星导航系统的发展,并为低轨PNT性能提升技术的研究和应用提供参考。展开更多
目的探讨导航护士在加速康复外科(enhanced recovery after surgery,ERAS)心脏病患者围手术期管理中的应用价值。方法选取2019年1月至2021年9月入住广元市第一人民医院的150例心脏手术患者作为研究对象,按入院顺序分为对照组和研究组各7...目的探讨导航护士在加速康复外科(enhanced recovery after surgery,ERAS)心脏病患者围手术期管理中的应用价值。方法选取2019年1月至2021年9月入住广元市第一人民医院的150例心脏手术患者作为研究对象,按入院顺序分为对照组和研究组各75例。对照组由责任护士常规落实ERAS护理方案,研究组由导航护士负责协调、督促和监控相关科室正确实施ERAS方案。比较两组患者ICU住院时间、关键措施执行率、术后疼痛、肺部感染发生率、排便情况和健康教育知识知晓率、护理满意度。结果两组患者均无肺部感染发生,ICU住院时间差异无统计学意义(P>0.05);与对照组相比,研究组便秘发生率和术后疼痛程度更低,关键措施执行率、健康教育知识知晓率、护理满意度更高,比较差异有统计学意义(P<0.05或0.001)。结论导航护士有更多的时间和精力专注于心脏围手术期患者的诊疗护理过程,保证ERAS措施执行的准确性、连续性,及时反馈和进行效果评价,使患者、家属更好地配合治疗护理,有利于防止护理并发症发生,促进患者康复。展开更多
With the completion of Chinese BeiDou Navigation Satellite System(BDS),the world has begun to enjoy the Positioning,Navigation,and Timing(PNT)services of four Global Navigation Satellite Systems(GNSS).In order to impr...With the completion of Chinese BeiDou Navigation Satellite System(BDS),the world has begun to enjoy the Positioning,Navigation,and Timing(PNT)services of four Global Navigation Satellite Systems(GNSS).In order to improve the GNSS performance and expand its applications,Low Earth Orbit(LEO)Enhanced Global Navigation Satellite System(LeGNSS)is being vigorously advocated.Combined with high-,medium-,and low-earth orbit satellites,it can improve GNSS performance in terms of orbit determination,Precise Point Positioning(PPP)convergence time,etc.This paper comprehensively reviews the current status of LeGNSS,focusing on analyzing its advantages and challenges for precise orbit and clock determination,PPP convergence,earth rotation parameter estimation,and global ionosphere modeling.Thanks to the fast geometric change brought by LEO satellites,LeGNSS is expected to fundamentally solve the problem of the long convergence time of PPP without any augmentation.The convergence time can be shortened within 1 minute if appropriate LEO constellations are deployed.However,there are still some issues to overcome,such as the optimization of LEO constellation as well as the real time LEO precise orbit and clock determination.展开更多
文摘目的构建并评价以导航护士为主导的医护患加速康复临床护理路径在肺癌胸腔镜切除患者围手术期管理中的作用。方法采用方便抽样法选取2022年7月—2023年7月在某三级甲等医院行胸腔镜切除术的肺癌患者128例为研究对象,按照患者入院的先后顺序,其中2022年7月—2023年1月入院的患者为对照组,2023年2-7月入院的患者为观察组,每组64例。对照组根据科室制定的常规护理措施实施护理,观察组梳理“医-护-患”三个角色需要完成的内容,构建导航护士主导实施的加速康复临床护理路径并开展培训与实施,比较2组的干预效果。结果2组患者术后首次下床时间、尿管拔除时间、胸管留置时间、术后中度及以上疼痛发生率、住院费用、住院时间、加速康复外科(enhanced recovery after surgery,ERAS)满意度比较均有统计学意义(P<0.05)。结论实施医护患加速康复临床护理路径保障了患者围手术期加速康复护理措施的有效实施,有利于患者的康复进程,缩短住院时间,减少住院费用,提高患者满意度。
基金The National Natural Science Foundation of China (41674016,41274016,41604024).
文摘Global navigation satellite system occultation sounder (GNOS) Fengyun-3C was launched successfully on September 23, 2013, which carried GPS/BDS receiver for the first time. This provides the convenience to study the enhancement results of low earth orbiter satellite (LEO) to BDS precise orbit determination (POD). First the data characteristic and code observation noise of GNOS are analyzed. Then the enhancement experiments in the case of global and regional ground observation stations layout are processed with four POD schemes: BDS single system, GPS/BDS double system, BDS single system with GNOS observations, GPS/BDS double system with GNOS observations. The precision of BDS orbits and clocks are compared via overlapping arcs. Results show that in the case of global station layout the along directional precision of GEO satellite has the biggest improvement, with the improvement percentage 60%. Then the precision of cross direction and the along direction of remaining satellites shows the second biggest improvement. The orbit precision of BDS-only POD in part of observation arcs some satellite even suffers a slight decline. The root mean square (RMS) of overlapping clock difference of visible arcs in GPS/BDS POD experiments improves by 0.1 ns level. As to the experiments of regional station layout with 7 ground stations, the orbit and clock overlapping precision and orbit predicting precision are analyzed. Results show that the predicting precision of BDS GEO satellites in the along direction improves by 85%. The remaining also has a substantial improvement, with the average percentage 21.7%. RMS of overlapping clock difference of visible arcs improves by 0.5 ns level.
文摘目的探讨导航护士在加速康复外科(enhanced recovery after surgery,ERAS)心脏病患者围手术期管理中的应用价值。方法选取2019年1月至2021年9月入住广元市第一人民医院的150例心脏手术患者作为研究对象,按入院顺序分为对照组和研究组各75例。对照组由责任护士常规落实ERAS护理方案,研究组由导航护士负责协调、督促和监控相关科室正确实施ERAS方案。比较两组患者ICU住院时间、关键措施执行率、术后疼痛、肺部感染发生率、排便情况和健康教育知识知晓率、护理满意度。结果两组患者均无肺部感染发生,ICU住院时间差异无统计学意义(P>0.05);与对照组相比,研究组便秘发生率和术后疼痛程度更低,关键措施执行率、健康教育知识知晓率、护理满意度更高,比较差异有统计学意义(P<0.05或0.001)。结论导航护士有更多的时间和精力专注于心脏围手术期患者的诊疗护理过程,保证ERAS措施执行的准确性、连续性,及时反馈和进行效果评价,使患者、家属更好地配合治疗护理,有利于防止护理并发症发生,促进患者康复。
基金the National Natural Science Funds of China[grant numbers 41874030,42074026]Natural Science Funds of Shanghai[grant number 21ZR1465600]+3 种基金the Program of Shanghai Academic Research Leader[grant number 20XD1423800]the Innovation Program of Shanghai Municipal Education Commission[grant number 2021-01-07-00-07-E00095]the“Shuguang Program”supported by Shanghai Education Development Foundation and Shanghai Municipal Education Commission[grant number 20SG18]the Scientific and Technological Innovation Plan from Shanghai Science and Technology Committee[grant numbers 20511103302,20511103402 and 20511103702].
文摘With the completion of Chinese BeiDou Navigation Satellite System(BDS),the world has begun to enjoy the Positioning,Navigation,and Timing(PNT)services of four Global Navigation Satellite Systems(GNSS).In order to improve the GNSS performance and expand its applications,Low Earth Orbit(LEO)Enhanced Global Navigation Satellite System(LeGNSS)is being vigorously advocated.Combined with high-,medium-,and low-earth orbit satellites,it can improve GNSS performance in terms of orbit determination,Precise Point Positioning(PPP)convergence time,etc.This paper comprehensively reviews the current status of LeGNSS,focusing on analyzing its advantages and challenges for precise orbit and clock determination,PPP convergence,earth rotation parameter estimation,and global ionosphere modeling.Thanks to the fast geometric change brought by LEO satellites,LeGNSS is expected to fundamentally solve the problem of the long convergence time of PPP without any augmentation.The convergence time can be shortened within 1 minute if appropriate LEO constellations are deployed.However,there are still some issues to overcome,such as the optimization of LEO constellation as well as the real time LEO precise orbit and clock determination.
