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Fuzzy control of carbon dioxide short circuit transfer welding based on reducing dependence of operating skills
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作者 王雅生 蔡洪能 +1 位作者 张庆 曲海英 《China Welding》 EI CAS 2002年第1期46-50,共5页
In order to reduce dependence of operating skill ,fuzzy control system is developed, the core of which is a 16 bit Single Chip Microcomputer of Intel 80C196KC.It is realized by software programming. In this system two... In order to reduce dependence of operating skill ,fuzzy control system is developed, the core of which is a 16 bit Single Chip Microcomputer of Intel 80C196KC.It is realized by software programming. In this system two fuzzy controller are designed. The PID parameter self adjusting fuzzy controller is used to compensate welding current deviation in the process of arc voltage optimized control. To obtain the optimum result of ultimate frequency of short circuit transfer, the self optimizing fuzzy controller carries out the arc voltage self optimizing by under the condition of the given welding current. Arc voltage and welding current are kept the optimum matching relationship by two fuzzy controllers. 展开更多
关键词 fuzzy control carbon dioxide welding single chip microcomputer operating skill
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A Four-Dimensional Variational System for Skillful Operational Prediction of Convective Storms
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作者 Nathan SNOOK Qinghong ZHANG 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2016年第10期1102-1103,共2页
Forecasting convective storms using NWP models is an important goal and a highly active area of ongoing research. Skillful and reliable NWP of convective storms could allow for severe weather warnings with longer lead... Forecasting convective storms using NWP models is an important goal and a highly active area of ongoing research. Skillful and reliable NWP of convective storms could allow for severe weather warnings with longer lead times, as opera- tional forecasters begin to incorporate convective-scale fore- casts into severe weather forecast operations (Stensrud et al., 2009, 2013). This would then provide vulnerable individuals and industries with more time to seek shelter and/or mitigate the impact of severe weather hazards. 展开更多
关键词 VDRAS A Four-Dimensional Variational System for Skillful operational Prediction of Convective Storms NWP
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Observation of the Effect of Video Assessment Method on the Operation Skills of Individual Nurses
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作者 Jianhua Qin Xiaolu Wan Nannan Ma 《Journal of Clinical and Nursing Research》 2024年第8期122-128,共7页
Objective:To explore the application effect of video assessment method in clinical nurses’nursing operation skills.Method:To select 58 nurses who participated in the individual soldier standard in the children’s hos... Objective:To explore the application effect of video assessment method in clinical nurses’nursing operation skills.Method:To select 58 nurses who participated in the individual soldier standard in the children’s hospital in 2019 and 2020 as the research objects,among which the nurses who participated in the individual soldier standard in 2019 were the nurses who participated in the individual soldier standard in 2019 and 2020.A total of 29 people in the first batch were set as the control group,using traditional assessment methods.In 2020,the second batch of 29 nurses who participated in the individual soldier standard reached the experimental group.Using the video assessment method,there was no significant difference in general information between the two groups(P>0.05).After the assessment,the scores,coping with work pressure,and proactiveness of the two groups of research subjects were compared.Results:The experimental group’s nursing operation assessment scores,coping with work pressure,and proactiveness were significantly better than those of the control group,the difference was statistically significant(P<0.05).Conclusion:The application of the video assessment method improves the passing rate of nurses’operational skills examination,enhances nurses’initiative in learning,reduces examination pressure,and can be accurately,timely,and safely applied to clinical nursing work,which is worthy of study and promotion. 展开更多
关键词 Video assessment method Nurse Operation skills Effect observation
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