目的分析3D打印技术联用医学影像存档与通讯系统(Picture Archiving and Communication Systems,PACS)教学模式对提升骨科临床实习生的理解和表达能力影响。方法选取2021年1月—2023年6月罗田县人民医院骨科的50名实习生为研究对象,按...目的分析3D打印技术联用医学影像存档与通讯系统(Picture Archiving and Communication Systems,PACS)教学模式对提升骨科临床实习生的理解和表达能力影响。方法选取2021年1月—2023年6月罗田县人民医院骨科的50名实习生为研究对象,按照单双数随机法分为两组,每组25名,对照组实施传统的带教方式,观察组使用3D打印技术联合PACS教学模式,对比两组考核成绩、教学效果自我评价及对教学模式的满意度。结果教学后,观察组实习生的理论考试成绩和实践考试成绩均高于对照组,差异有统计学意义(P均<0.05)。观察组表达能力、理解能力、解决问题能力、自主学习能力评分高于对照组,差异有统计学意义(P均<0.05)。观察组教学满意度评分(90.63±8.51)分高于对照组(85.05±8.02)分,差异有统计学意义(t=2.386,P<0.05)。结论3D打印技术联合PACS教学模式有利于提升教学质量,增强骨科实习生的理解和表达能力。展开更多
Conceptual design, data model and key techniques of "Geo-engineer 3D assistant", an underground 3D GIS oriented to geology and mine application, were discussed. In particular, the importance of high-order sm...Conceptual design, data model and key techniques of "Geo-engineer 3D assistant", an underground 3D GIS oriented to geology and mine application, were discussed. In particular, the importance of high-order smoothing triangular pieces to surface's fine expression in geological modeling was emphasized. The contour mode is the most favorite mode of the three modes about surface expression: DEM, TIN and contour. Topology in underground 3D modeling with CAGD was compared. From the view of boundary and coboundary, which is soul of IS 19107 (Geographic information spatial schema), 3D underground topology was re-examined.展开更多
A new multi-mode resistivity imaging sonde, with toroidal coils as source, can conduct three resistivity measurements: azimuthal resistivity, lateral resistivity, and bit resistivity measurements. Thus, the logging ti...A new multi-mode resistivity imaging sonde, with toroidal coils as source, can conduct three resistivity measurements: azimuthal resistivity, lateral resistivity, and bit resistivity measurements. Thus, the logging time and cost are greatly saved. The toroidal coils are simplified as an extended voltage dipole and the response equations are derived for a homogenous formation. Based on 3D FEM, the depth of investigation(DOI), vertical resolution, circumferential azimuthal capacity, borehole diameter, mud resistivity, thickness of target formation, and the resistivity of the surrounding formation and mud invasion are simulated. The results suggest that the three measurement modes of the new sonde are different in vertical resolutions and DOIs. The circumferential detection ability of the azimuth button depends on the contrast between the anomaly and formation resistivity and the open angle of the anomaly. Whether the borehole is truncated at the bit or not has a great influence on the simulation results. The borehole and mud invasion affect the apparent resistivity in all modes, but the effects of resistivity of surrounding formation and thickness of the target formation are only corrected for lateral resistivity measurement.展开更多
文摘目的分析3D打印技术联用医学影像存档与通讯系统(Picture Archiving and Communication Systems,PACS)教学模式对提升骨科临床实习生的理解和表达能力影响。方法选取2021年1月—2023年6月罗田县人民医院骨科的50名实习生为研究对象,按照单双数随机法分为两组,每组25名,对照组实施传统的带教方式,观察组使用3D打印技术联合PACS教学模式,对比两组考核成绩、教学效果自我评价及对教学模式的满意度。结果教学后,观察组实习生的理论考试成绩和实践考试成绩均高于对照组,差异有统计学意义(P均<0.05)。观察组表达能力、理解能力、解决问题能力、自主学习能力评分高于对照组,差异有统计学意义(P均<0.05)。观察组教学满意度评分(90.63±8.51)分高于对照组(85.05±8.02)分,差异有统计学意义(t=2.386,P<0.05)。结论3D打印技术联合PACS教学模式有利于提升教学质量,增强骨科实习生的理解和表达能力。
基金Project(A11024)supported by the Key Laboratory Fund of Geo-Informatics of State Bureau of Surveying and MappingProject(7771022)supported by the Basic Research Fund for Chinese Academy of Surveying and MappingProject(2010AA22202)supported by the National High-tech Research and Development Program of China
文摘Conceptual design, data model and key techniques of "Geo-engineer 3D assistant", an underground 3D GIS oriented to geology and mine application, were discussed. In particular, the importance of high-order smoothing triangular pieces to surface's fine expression in geological modeling was emphasized. The contour mode is the most favorite mode of the three modes about surface expression: DEM, TIN and contour. Topology in underground 3D modeling with CAGD was compared. From the view of boundary and coboundary, which is soul of IS 19107 (Geographic information spatial schema), 3D underground topology was re-examined.
基金sponsored by Study on High-Precision Logging While Drilling Imaging Technology of Low-Permeability Reservoirs(No.2016ZX05021-002)
文摘A new multi-mode resistivity imaging sonde, with toroidal coils as source, can conduct three resistivity measurements: azimuthal resistivity, lateral resistivity, and bit resistivity measurements. Thus, the logging time and cost are greatly saved. The toroidal coils are simplified as an extended voltage dipole and the response equations are derived for a homogenous formation. Based on 3D FEM, the depth of investigation(DOI), vertical resolution, circumferential azimuthal capacity, borehole diameter, mud resistivity, thickness of target formation, and the resistivity of the surrounding formation and mud invasion are simulated. The results suggest that the three measurement modes of the new sonde are different in vertical resolutions and DOIs. The circumferential detection ability of the azimuth button depends on the contrast between the anomaly and formation resistivity and the open angle of the anomaly. Whether the borehole is truncated at the bit or not has a great influence on the simulation results. The borehole and mud invasion affect the apparent resistivity in all modes, but the effects of resistivity of surrounding formation and thickness of the target formation are only corrected for lateral resistivity measurement.
