Aiming at the Four-Dimensional Variation source term inversion algorithm proposed earlier,the observation error regularization factor is introduced to improve the prediction accuracy of the diffusion model,and an impr...Aiming at the Four-Dimensional Variation source term inversion algorithm proposed earlier,the observation error regularization factor is introduced to improve the prediction accuracy of the diffusion model,and an improved Four-Dimensional Variation source term inversion algorithm with observation error regularization(OER-4DVAR STI model)is formed.Firstly,by constructing the inversion process and basic model of OER-4DVAR STI model,its basic principle and logical structure are studied.Secondly,the observation error regularization factor estimation method based on Bayesian optimization is proposed,and the error factor is separated and optimized by two parameters:error statistical time and deviation degree.Finally,the scientific,feasible and advanced nature of the OER-4DVAR STI model are verified by numerical simulation and tracer test data.The experimental results show that OER-4DVAR STI model can better reverse calculate the hazard source term information under the conditions of high atmospheric stability and flat underlying surface.Compared with the previous inversion algorithm,the source intensity estimation accuracy of OER-4DVAR STI model is improved by about 46.97%,and the source location estimation accuracy is improved by about 26.72%.展开更多
《术语辞汇》(Technical Terms English and Chinese)是晚清首部由来华传教士及部分西方学者集体审定刊行的综合性科技术语词典,它收集了大量当时使用的科技术语,其中包含了物理学术语,反映了当时物理学术语的翻译和使用情况。本文通过...《术语辞汇》(Technical Terms English and Chinese)是晚清首部由来华传教士及部分西方学者集体审定刊行的综合性科技术语词典,它收集了大量当时使用的科技术语,其中包含了物理学术语,反映了当时物理学术语的翻译和使用情况。本文通过查阅1877年、1890年两次来华传教士大会会议记录和中华教育会会议记录,梳理出《术语辞汇》刊行过程中参与物理学术语统一工作的人员构成及分工。通过译词的对比,考订了《术语辞汇》中物理学术语的来源渠道,以及术语收集、筛选的原则,认为其来源基本是当时的物理学译著收录的术语、行业从业者提供的术语及前人编纂的英华字典收录的术语。《术语辞汇》中的物理学术语是对晚清翻译、流传的物理学术语的总结,益智书会成立的科技术语委员会为晚清科技术语统一起到了重要的推进作用,该委员会的工作模式和审定的术语,对后世统一物理学术语产生了积极的影响。展开更多
基金Ministry of Science and Technology of the People’s Republic of China for its support and guidance(Grant No.2018YFC0214100)。
文摘Aiming at the Four-Dimensional Variation source term inversion algorithm proposed earlier,the observation error regularization factor is introduced to improve the prediction accuracy of the diffusion model,and an improved Four-Dimensional Variation source term inversion algorithm with observation error regularization(OER-4DVAR STI model)is formed.Firstly,by constructing the inversion process and basic model of OER-4DVAR STI model,its basic principle and logical structure are studied.Secondly,the observation error regularization factor estimation method based on Bayesian optimization is proposed,and the error factor is separated and optimized by two parameters:error statistical time and deviation degree.Finally,the scientific,feasible and advanced nature of the OER-4DVAR STI model are verified by numerical simulation and tracer test data.The experimental results show that OER-4DVAR STI model can better reverse calculate the hazard source term information under the conditions of high atmospheric stability and flat underlying surface.Compared with the previous inversion algorithm,the source intensity estimation accuracy of OER-4DVAR STI model is improved by about 46.97%,and the source location estimation accuracy is improved by about 26.72%.
文摘《术语辞汇》(Technical Terms English and Chinese)是晚清首部由来华传教士及部分西方学者集体审定刊行的综合性科技术语词典,它收集了大量当时使用的科技术语,其中包含了物理学术语,反映了当时物理学术语的翻译和使用情况。本文通过查阅1877年、1890年两次来华传教士大会会议记录和中华教育会会议记录,梳理出《术语辞汇》刊行过程中参与物理学术语统一工作的人员构成及分工。通过译词的对比,考订了《术语辞汇》中物理学术语的来源渠道,以及术语收集、筛选的原则,认为其来源基本是当时的物理学译著收录的术语、行业从业者提供的术语及前人编纂的英华字典收录的术语。《术语辞汇》中的物理学术语是对晚清翻译、流传的物理学术语的总结,益智书会成立的科技术语委员会为晚清科技术语统一起到了重要的推进作用,该委员会的工作模式和审定的术语,对后世统一物理学术语产生了积极的影响。
