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A Novel SPICE Macro-Model for Power ICs
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作者 赵野 周玉梅 +1 位作者 李海松 孙伟锋 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2008年第2期229-233,共5页
A novel macro-model of high-voltage DMOS for power ICs is proposed according to the canonical piecewiselinear model technique. The method describes nonlinear characteristics directly as functions of node voltage. We e... A novel macro-model of high-voltage DMOS for power ICs is proposed according to the canonical piecewiselinear model technique. The method describes nonlinear characteristics directly as functions of node voltage. We employ the Powell algorithm, which gives higher accuracy without the convergence problem and with lower analysis time. Finally, a Comparison of simulation results and measurement results in application to power ICs is reported. 展开更多
关键词 power IC SPICE macro-model DMOS
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Photodiode Circuit Macro-model for SPICE Si mulation
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作者 RAO Cheng YUAN Xiang-hui +3 位作者 ZHANG Si-jie Meng Li-ya Pan yin-song HUANG You-shu 《Semiconductor Photonics and Technology》 CAS 2006年第1期25-29,共5页
An accurate photodiode circuit macro-model is proposed for SPICE simulation. The definition and implementation of the macro-model is based on carrier stationary continuity equation. In this macro-model, the photodiode... An accurate photodiode circuit macro-model is proposed for SPICE simulation. The definition and implementation of the macro-model is based on carrier stationary continuity equation. In this macro-model, the photodiode is a device of three pins, one for light intensity input and the other two for photocurrent output, which represent the relationship between photocurrent and incident light. The validity of the proposed macro-model is demonstrated with its PSPICE simulation result compared with reported experimental data. 展开更多
关键词 Photodiode model SPICE macro-model NP junction Stationary continuity equation CMOS PHOTOCURRENT Carrier concentration
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持续质量改进在急诊科护理带教中的应用 被引量:91
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作者 俞继芳 邱贤云 李章平 《护士进修杂志》 北大核心 2005年第7期601-602,共2页
目的探讨持续质量改进措施,提高急诊科护理带教效果。方法运用PDCA四步法,即设计(plan)-实施(do)-检验(check)-应用(act),设计并实施提高急诊科;护理带教效果的教学流程。结果38名采用持续质量改进教学管理模式带教的护生出科考试成绩... 目的探讨持续质量改进措施,提高急诊科护理带教效果。方法运用PDCA四步法,即设计(plan)-实施(do)-检验(check)-应用(act),设计并实施提高急诊科;护理带教效果的教学流程。结果38名采用持续质量改进教学管理模式带教的护生出科考试成绩及对带教教师的满意度均明显高于对照组,具有统计学差异。结论采取持续质量改进措施,大大提高了实习护生的预检分诊能力,病情观察能力.急诊动手能力及应急配合能力,显著提高了急诊科护理带教效果。 展开更多
关键词 急诊科 护理教育 持续质量改进
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Static inelastic analysis of RC shear walls
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作者 陈勤 钱稼茹 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2002年第1期94-99,共6页
A macro-model of a reinforced concrete (RC) shear wall is developed for static inelastic analysis.The model is composed of RC column elements and RC membrane elements.The column elements are used to model the boundary... A macro-model of a reinforced concrete (RC) shear wall is developed for static inelastic analysis.The model is composed of RC column elements and RC membrane elements.The column elements are used to model the boundary zone and the membrane elements are used to model the wall panel.Various types of constitutive relationships of concrete could be adopted for the two kinds of elements.To perform analysis,the wall is divided into layers along its height.Two adjacent layers are connected with a rigid beam.There are only three unknown displacement components for each layer.A method called single degree of freedom compensation is adopted to solve the peak value of the capacity curve.The post-peak stage analysis is performed using a forced iteration approach.The macro-model developed in the study and the complete process analysis methodology are verified by the experimental and static inelastic analytical results of four RC shear wall specimens. 展开更多
关键词 RC shear wall macro-model static inelastic analysis EXPERIMENT
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基于改进DEPACT宏模型的架空线路雷电感应过电压计算方法 被引量:3
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作者 姜伟 郭姗姗 《电瓷避雷器》 CAS 北大核心 2017年第3期123-128,共6页
分析了现有雷电感应过电压计算方法的不足,并提出了一种基于改进DEPACT宏模型的架空线路雷电感应过电压计算方法。分别介绍了DEPACT宏模型和Agrawal场线模型,并得到了外部电磁场激励下无损传输线的时域等效电路以及考虑频变参数的有损... 分析了现有雷电感应过电压计算方法的不足,并提出了一种基于改进DEPACT宏模型的架空线路雷电感应过电压计算方法。分别介绍了DEPACT宏模型和Agrawal场线模型,并得到了外部电磁场激励下无损传输线的时域等效电路以及考虑频变参数的有损网络等效电路。该方法基于相模变换原理,可直接在相域内求解架空线路的雷电感应过电压。与现有方法相比,该方法具有计算效率高、计算精度高、稳定性好等特点。最后,通过算例进行计算,验证了所述方法的正确性;通过与FDTD比较,体现了该方法在计算效率方面的优势。 展开更多
关键词 雷电感应过电压 depact宏模型 架空配电线路 相模变换
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