In the field of weapon system of systems (WSOS) simulation, various indicators are widely used to describe the capability of WSOS, but it is always difficult to describe the comprehensive capability of WSOS quickly an...In the field of weapon system of systems (WSOS) simulation, various indicators are widely used to describe the capability of WSOS, but it is always difficult to describe the comprehensive capability of WSOS quickly and intuitively by visualization of multi-dimensional indicators. A method of machine learning and visualization is proposed, which can display and analyze the capabilities of different WSOS in a two-dimensional plane. The analysis and comparison of the comprehensive capability of different components of WSOS is realized by the method, which consists of six parts: multiple simulations, key indicators mining, three spatial distance calculation, fusion project calculation, calculation of individual capability density, and calculation of multiple capability ranges overlay. Binding a simulation experiment, the collaborative analysis of six indicators and 100 possible kinds of red WSOS are achieved. The experimental results show that this method can effectively improve the quality and speed of capabilities analysis, reveal a large number of potential information, and provide a visual support for the qualitative and quantitative analysis model.展开更多
【目的】中国传统园林空间复杂多变,传统的分析方法难以深入探索传统园林复杂的三维视觉空间特征。三维激光雷达(light detection and ranging,LiDAR)点云技术在传统园林空间研究方面具有精度高、信息全等优势,借助LiDAR点云技术深入探...【目的】中国传统园林空间复杂多变,传统的分析方法难以深入探索传统园林复杂的三维视觉空间特征。三维激光雷达(light detection and ranging,LiDAR)点云技术在传统园林空间研究方面具有精度高、信息全等优势,借助LiDAR点云技术深入探索中国传统园林视觉空间特征,可为现代人居环境空间营造提供借鉴与参考。【方法】基于LiDAR点云技术提出一套适用于中国传统园林视觉空间分析的方法,并以三维可视性、视野舒展度及景物视野占比3项指标量化描述视觉空间。【结果】以寄畅园为例,构建了寄畅园LiDAR点云体素模型,利用提出的方法对锦汇漪西侧滨水步道11个视点的视觉空间进行了量化分析,解析了寄畅园的视觉空间特征,并探究了该步道的空间感知序列。【结论】证实了利用LiDAR点云技术展开传统园林视觉空间研究的可行性与准确性,提出的方法可应用于其他传统园林视觉空间的分析研究中。展开更多
目的采用视功能问卷和生存质量问卷研究早中期白内障患者的视功能(visual function,VF)和生存质量(quality of life,QOL),探讨视力≥0.5早期白内障患者手术适应证。方法对日常生活视力≥0.3的161例早、中期白内障患者进行VF、QOL问卷调...目的采用视功能问卷和生存质量问卷研究早中期白内障患者的视功能(visual function,VF)和生存质量(quality of life,QOL),探讨视力≥0.5早期白内障患者手术适应证。方法对日常生活视力≥0.3的161例早、中期白内障患者进行VF、QOL问卷调查,分为视力0.3、0.4组102例、视力≥0.5要求手术组21例、视力≥0.5未要求手术组38例,以视力0.3、0.4组VF、QOL得分95%位数为手术参考值,以另2组得分临床验证、筛选手术参考值。结果 161例受检者中,所有患者VF与日常生活视力显著相关(r=0.61,P<0.01),QOL与日常生活视力显著相关(r=0.45,P<0.01)。视力0.3、0.4白内障患者102例,95%位数VF得分为73.3分,QOL得分为94.4分。视力≥0.5患者59例,要求手术组21例,未要求手术组38例。≥0.5患者按VF参考值25例可手术,按QOL参考值43例可手术,与按患者实际要求手术手术率比较,VF为参考2种手术率无统计学意义(P>0.05),QOL为参考时2种手术率有统计学意义(P<0.05)。结论早中期白内障VF、QOL得分与日常生活视力显著相关,可将视功能问卷作为早期白内障患者的手术参考指征。展开更多
基金supported by the National Natural Science Foundation of China(U14352186140340161273189)
文摘In the field of weapon system of systems (WSOS) simulation, various indicators are widely used to describe the capability of WSOS, but it is always difficult to describe the comprehensive capability of WSOS quickly and intuitively by visualization of multi-dimensional indicators. A method of machine learning and visualization is proposed, which can display and analyze the capabilities of different WSOS in a two-dimensional plane. The analysis and comparison of the comprehensive capability of different components of WSOS is realized by the method, which consists of six parts: multiple simulations, key indicators mining, three spatial distance calculation, fusion project calculation, calculation of individual capability density, and calculation of multiple capability ranges overlay. Binding a simulation experiment, the collaborative analysis of six indicators and 100 possible kinds of red WSOS are achieved. The experimental results show that this method can effectively improve the quality and speed of capabilities analysis, reveal a large number of potential information, and provide a visual support for the qualitative and quantitative analysis model.
文摘【目的】中国传统园林空间复杂多变,传统的分析方法难以深入探索传统园林复杂的三维视觉空间特征。三维激光雷达(light detection and ranging,LiDAR)点云技术在传统园林空间研究方面具有精度高、信息全等优势,借助LiDAR点云技术深入探索中国传统园林视觉空间特征,可为现代人居环境空间营造提供借鉴与参考。【方法】基于LiDAR点云技术提出一套适用于中国传统园林视觉空间分析的方法,并以三维可视性、视野舒展度及景物视野占比3项指标量化描述视觉空间。【结果】以寄畅园为例,构建了寄畅园LiDAR点云体素模型,利用提出的方法对锦汇漪西侧滨水步道11个视点的视觉空间进行了量化分析,解析了寄畅园的视觉空间特征,并探究了该步道的空间感知序列。【结论】证实了利用LiDAR点云技术展开传统园林视觉空间研究的可行性与准确性,提出的方法可应用于其他传统园林视觉空间的分析研究中。
文摘目的采用视功能问卷和生存质量问卷研究早中期白内障患者的视功能(visual function,VF)和生存质量(quality of life,QOL),探讨视力≥0.5早期白内障患者手术适应证。方法对日常生活视力≥0.3的161例早、中期白内障患者进行VF、QOL问卷调查,分为视力0.3、0.4组102例、视力≥0.5要求手术组21例、视力≥0.5未要求手术组38例,以视力0.3、0.4组VF、QOL得分95%位数为手术参考值,以另2组得分临床验证、筛选手术参考值。结果 161例受检者中,所有患者VF与日常生活视力显著相关(r=0.61,P<0.01),QOL与日常生活视力显著相关(r=0.45,P<0.01)。视力0.3、0.4白内障患者102例,95%位数VF得分为73.3分,QOL得分为94.4分。视力≥0.5患者59例,要求手术组21例,未要求手术组38例。≥0.5患者按VF参考值25例可手术,按QOL参考值43例可手术,与按患者实际要求手术手术率比较,VF为参考2种手术率无统计学意义(P>0.05),QOL为参考时2种手术率有统计学意义(P<0.05)。结论早中期白内障VF、QOL得分与日常生活视力显著相关,可将视功能问卷作为早期白内障患者的手术参考指征。
