In view of the fact that traditional air target threat assessment methods are difficult to reflect the combat characteristics of uncertain, dynamic and hybrid formation, an algorithm is proposed to solve the multi-tar...In view of the fact that traditional air target threat assessment methods are difficult to reflect the combat characteristics of uncertain, dynamic and hybrid formation, an algorithm is proposed to solve the multi-target threat assessment problems. The target attribute weight is calculated by the intuitionistic fuzzy entropy(IFE) algorithm and the time series weight is gained by the Poisson distribution method based on multi-times data. Finally,assessment and sequencing of the air multi-target threat model based on IFE and dynamic Vlse Kriterijumska Optimizacija I Kompromisno Resenje(VIKOR) is established with an example which indicates that the method is reasonable and effective.展开更多
以Web of sciences、ESI(基本科学指标数据库)等数据库为统计分析源,对1996—2006年中国计算机科学的发展现状和发展态势从文献计量学的角度进行了统计分析,通过论文数量、被引频次、篇均被引频次和影响因子等项指标研究了计算机科学论...以Web of sciences、ESI(基本科学指标数据库)等数据库为统计分析源,对1996—2006年中国计算机科学的发展现状和发展态势从文献计量学的角度进行了统计分析,通过论文数量、被引频次、篇均被引频次和影响因子等项指标研究了计算机科学论文产出随时间的变化趋势、主要领域的发展状况及刊登论文期刊的影响力。展开更多
目的系统地探讨和分析正态概率曲线的发现过程及棣莫弗(Abraham De Moivre,1667- 1754)概率思想的创新点。方法历史分析和文献考证。结果棣莫弗在前人的基础上,经过10 余年的努力最终导出了正态概率曲线的数学表达式。结论正态分布是概...目的系统地探讨和分析正态概率曲线的发现过程及棣莫弗(Abraham De Moivre,1667- 1754)概率思想的创新点。方法历史分析和文献考证。结果棣莫弗在前人的基础上,经过10 余年的努力最终导出了正态概率曲线的数学表达式。结论正态分布是概率论中最重要的分布, 其发现揭示了棣莫弗概率思想的发展过程及其对概率论发展所做的奠基性工作。展开更多
基金supported by the National Natural Science Foundation of China(61401363)the Science and Technology on Avionics Integration Laboratory and Aeronautical Science Foundation(20155153034)+1 种基金the Innovative Talents Promotion Plan in Shaanxi Province(2017KJXX-15)the Fundamental Research Funds for the Central Universities(3102016AXXX005)
文摘In view of the fact that traditional air target threat assessment methods are difficult to reflect the combat characteristics of uncertain, dynamic and hybrid formation, an algorithm is proposed to solve the multi-target threat assessment problems. The target attribute weight is calculated by the intuitionistic fuzzy entropy(IFE) algorithm and the time series weight is gained by the Poisson distribution method based on multi-times data. Finally,assessment and sequencing of the air multi-target threat model based on IFE and dynamic Vlse Kriterijumska Optimizacija I Kompromisno Resenje(VIKOR) is established with an example which indicates that the method is reasonable and effective.
文摘以Web of sciences、ESI(基本科学指标数据库)等数据库为统计分析源,对1996—2006年中国计算机科学的发展现状和发展态势从文献计量学的角度进行了统计分析,通过论文数量、被引频次、篇均被引频次和影响因子等项指标研究了计算机科学论文产出随时间的变化趋势、主要领域的发展状况及刊登论文期刊的影响力。
