Chinese college students have some drawbacks in English learning and mastering. Through a dozen years of English learning, some of them have high ability of passing examinations, but the practical application ability ...Chinese college students have some drawbacks in English learning and mastering. Through a dozen years of English learning, some of them have high ability of passing examinations, but the practical application ability is barely satisfactory with relatively poor listening level and oral expression ability. The objective cause for this situation is the relatively single and stylization English teaching model used by traditional colleges and universities. This model only emphasizes learning on class which greatly harms students＇ English learning enthusiasm and initiatives. The result is that although the students passed CET4 and CET6 long time before their graduation, they still not dare to open their mouth to speaking concerning face to face English communications. Over the years, the researches on how to improve college students＇ English application ability never stop and they did obtain some achievements and show some opportunities, for example, if we can bring APP （application programs） into college English listening class, it will largely meet students requirements on English learning and this can also replenish and perfect traditional English teaching model.展开更多
Effective adjustment of fertilization spacing and amounts for different plant distances is beneficial to increase production and reduce the amount of fertilizer used.In order to achieve such a target,an electric-ferti...Effective adjustment of fertilization spacing and amounts for different plant distances is beneficial to increase production and reduce the amount of fertilizer used.In order to achieve such a target,an electric-fertilizing vehicle with staggered fan-shaped openings in a fertilization device is proposed here,and its fertilization spacing and amounts are controlled by a control system and mobile phone-based programs.Further validating multivariable effects on fertilization spacing and amounts,such as openings,rotary speeds,and moving parameters of the vehicle,an integration discrete element model(DEM)is established so that the feasibility of the fertilization device could be evaluated before manufacturing and testing.Finally,it is reflected through field-simulated experiments that fertilizer spacing ranges from 0.27 to 5.45 m.Compared with simulated results,the absolute error varies from-0.08 to 0.05 m,and the maximum relative error is about-5.67%.Therefore,the uniform and stable fertilization for different plant spacing is semi-actively achieved by the designed device and a control system with mobile phone-based programs.The proposed simulation model is feasible,thus presenting a good reference for designing these components.展开更多
文摘Chinese college students have some drawbacks in English learning and mastering. Through a dozen years of English learning, some of them have high ability of passing examinations, but the practical application ability is barely satisfactory with relatively poor listening level and oral expression ability. The objective cause for this situation is the relatively single and stylization English teaching model used by traditional colleges and universities. This model only emphasizes learning on class which greatly harms students＇ English learning enthusiasm and initiatives. The result is that although the students passed CET4 and CET6 long time before their graduation, they still not dare to open their mouth to speaking concerning face to face English communications. Over the years, the researches on how to improve college students＇ English application ability never stop and they did obtain some achievements and show some opportunities, for example, if we can bring APP （application programs） into college English listening class, it will largely meet students requirements on English learning and this can also replenish and perfect traditional English teaching model.
基金supported by the Natural Science Foundation of Hubei Province(Grant No.2021CFB592)the Outstanding Youth Fund of Hubei University of Automotive Technology(Grant No.2023YQ04)+1 种基金This work was also sponsored by the Outstanding Young and Middle-aged Scientific Innovation Team of Colleges and Universities of Hubei Province(Grant No.T201913)the Initiation Fund for Doctoral Research from Hubei University of Automotive Technology(Grant No.BK201608).
文摘Effective adjustment of fertilization spacing and amounts for different plant distances is beneficial to increase production and reduce the amount of fertilizer used.In order to achieve such a target,an electric-fertilizing vehicle with staggered fan-shaped openings in a fertilization device is proposed here,and its fertilization spacing and amounts are controlled by a control system and mobile phone-based programs.Further validating multivariable effects on fertilization spacing and amounts,such as openings,rotary speeds,and moving parameters of the vehicle,an integration discrete element model(DEM)is established so that the feasibility of the fertilization device could be evaluated before manufacturing and testing.Finally,it is reflected through field-simulated experiments that fertilizer spacing ranges from 0.27 to 5.45 m.Compared with simulated results,the absolute error varies from-0.08 to 0.05 m,and the maximum relative error is about-5.67%.Therefore,the uniform and stable fertilization for different plant spacing is semi-actively achieved by the designed device and a control system with mobile phone-based programs.The proposed simulation model is feasible,thus presenting a good reference for designing these components.
