采用了一种基于实测轨迹的电力系统数值仿真模型参数校正方法,该方法以PSAT分析工具为内核开发了模型参数校正软件。软件的主要功能包括基于实测轨迹的仿真解耦、基于轨迹灵敏度的模型参数排序以及基于非线性最小二乘法的模型参数自动...采用了一种基于实测轨迹的电力系统数值仿真模型参数校正方法,该方法以PSAT分析工具为内核开发了模型参数校正软件。软件的主要功能包括基于实测轨迹的仿真解耦、基于轨迹灵敏度的模型参数排序以及基于非线性最小二乘法的模型参数自动校正。通过对动模实验室单机无穷大系统及New England 10机39节点系统的测试表明,该软件能够基于实测轨迹有效确定误差源,并自动进行参数校正。该软件可以成为大规模电力系统模型参数校正的有效工具,具有工程应用的潜力。展开更多
本文介绍了应用电动汽车仿真软件 PSAT 5.1对日本丰田公司的混合动力轿车 Prius 的仿真技术,它包括分析 PSAT 采用前向仿真方法对 Prius 的建模过程,Prius 轿车的动力系统结构和仿真参数。最后给出了仿真结果,并进行了具体分析。该文能...本文介绍了应用电动汽车仿真软件 PSAT 5.1对日本丰田公司的混合动力轿车 Prius 的仿真技术,它包括分析 PSAT 采用前向仿真方法对 Prius 的建模过程,Prius 轿车的动力系统结构和仿真参数。最后给出了仿真结果,并进行了具体分析。该文能为企业设计混合动力轿车提供参考。展开更多
Prostate cancer is a public health problem in Senegal. It is one of the most common cancers in men and can be detected early by PSA measurement and confirmed by the pathological study which specifies the histological ...Prostate cancer is a public health problem in Senegal. It is one of the most common cancers in men and can be detected early by PSA measurement and confirmed by the pathological study which specifies the histological type and evaluates the histoprognostic scores (Gleason and pTNM). We did not find any anatomopathological study highlighting a link between the PSA t rate and histoprognostic Gleason scores in Senegal. Objective: We carried out this work aimed at determining whether there is a correlation between the PSA t rate and the histoprognostic Gleason score, in our context. Methodology: This is a retrospective, descriptive and analytical study conducted from January 2013 to October 2021, based on histologically proven prostate cancer cases with a specified PSA level, diagnosed in the pathological anatomy and cytology laboratory of Aristide Le Dantec hospital. Results: We identified 654 cases of prostate cancer. The average age was 68.59 ± 5.8 years with extremes of 40 years to 92 years. More than half of our cohort presented a clinical stage T2c, i.e. 56.94%. The average prostate volume on ultrasound was 81.81 ± 66 cc. The median PSA t was 110.5 ng/ml, with extremes ranging from 2 ng/ml to 74,770 ng/ml. Prostatic adenocarcinoma was the only histological type found in our patients. There was a predominance of Gleason score 6 (PICU grade group 1) observed in 35.17% of patients. Well-differentiated cancers were predominant and represented 35.17%. There was a statistically significant positive correlation between PSA t level and Gleason score (Spearman’s Rho = 0.305, p = 0.000). Conclusion: This study shows that in the Senegalese population, in patients with prostate cancer, the higher the PSA t level rises above normal, the higher the Gleason score tends to be.展开更多
基于MATLAB数学语言编写的电力系统分析软件包PSAT(Power System Analysis Toolbox)的源代码是开放性的。阐述了PSAT仿真软件的功能和建模,通过对同一个典型算例进行暂态稳定分析,将PSAT仿真软件结果与商业软件电力系统综合仿真程序PSAS...基于MATLAB数学语言编写的电力系统分析软件包PSAT(Power System Analysis Toolbox)的源代码是开放性的。阐述了PSAT仿真软件的功能和建模,通过对同一个典型算例进行暂态稳定分析,将PSAT仿真软件结果与商业软件电力系统综合仿真程序PSASP进行了对比分析,表明该软件包的计算结果具有较好的有效性,最后对PSAT仿真软件的性能作了评价,指出了需要完善的功能模块。展开更多
文摘采用了一种基于实测轨迹的电力系统数值仿真模型参数校正方法,该方法以PSAT分析工具为内核开发了模型参数校正软件。软件的主要功能包括基于实测轨迹的仿真解耦、基于轨迹灵敏度的模型参数排序以及基于非线性最小二乘法的模型参数自动校正。通过对动模实验室单机无穷大系统及New England 10机39节点系统的测试表明,该软件能够基于实测轨迹有效确定误差源,并自动进行参数校正。该软件可以成为大规模电力系统模型参数校正的有效工具,具有工程应用的潜力。
文摘Prostate cancer is a public health problem in Senegal. It is one of the most common cancers in men and can be detected early by PSA measurement and confirmed by the pathological study which specifies the histological type and evaluates the histoprognostic scores (Gleason and pTNM). We did not find any anatomopathological study highlighting a link between the PSA t rate and histoprognostic Gleason scores in Senegal. Objective: We carried out this work aimed at determining whether there is a correlation between the PSA t rate and the histoprognostic Gleason score, in our context. Methodology: This is a retrospective, descriptive and analytical study conducted from January 2013 to October 2021, based on histologically proven prostate cancer cases with a specified PSA level, diagnosed in the pathological anatomy and cytology laboratory of Aristide Le Dantec hospital. Results: We identified 654 cases of prostate cancer. The average age was 68.59 ± 5.8 years with extremes of 40 years to 92 years. More than half of our cohort presented a clinical stage T2c, i.e. 56.94%. The average prostate volume on ultrasound was 81.81 ± 66 cc. The median PSA t was 110.5 ng/ml, with extremes ranging from 2 ng/ml to 74,770 ng/ml. Prostatic adenocarcinoma was the only histological type found in our patients. There was a predominance of Gleason score 6 (PICU grade group 1) observed in 35.17% of patients. Well-differentiated cancers were predominant and represented 35.17%. There was a statistically significant positive correlation between PSA t level and Gleason score (Spearman’s Rho = 0.305, p = 0.000). Conclusion: This study shows that in the Senegalese population, in patients with prostate cancer, the higher the PSA t level rises above normal, the higher the Gleason score tends to be.
文摘基于MATLAB数学语言编写的电力系统分析软件包PSAT(Power System Analysis Toolbox)的源代码是开放性的。阐述了PSAT仿真软件的功能和建模,通过对同一个典型算例进行暂态稳定分析,将PSAT仿真软件结果与商业软件电力系统综合仿真程序PSASP进行了对比分析,表明该软件包的计算结果具有较好的有效性,最后对PSAT仿真软件的性能作了评价,指出了需要完善的功能模块。
