本文探讨了新工科教育模式下《增材制造技术》课程的项目制学习实践。针对传统工科教育中存在的过分侧重于理论讲授和以考试成绩评估学习达成度的问题,项目制学习提供了一种解决方案。本文详细介绍了《增材制造技术》课程的设计、实施...本文探讨了新工科教育模式下《增材制造技术》课程的项目制学习实践。针对传统工科教育中存在的过分侧重于理论讲授和以考试成绩评估学习达成度的问题,项目制学习提供了一种解决方案。本文详细介绍了《增材制造技术》课程的设计、实施过程、成绩评价体系及课程效果,通过项目制学习,学生在项目实践中既获取了知识和技能,深入理解了增材制造技术,又训练了有效沟通专业问题的能力,提高了解决复杂工程问题的能力。This article explores the practice of project-based learning in “Additive Manufacturing Technology” course under the emerging engineering education model. Addressing the issue of traditional engineering education that overemphasizes theoretical teaching and the assessment of learning outcomes through examination scores, project-based learning offers a solution. The article provides a detailed introduction to the design, implementation process, grading system, and course outcomes of the “Additive Manufacturing Technology” course. Through project-based learning, students not only gain knowledge and skills and deepen their understanding of additive manufacturing technology in practical projects, but also develop the ability to effectively communicate professional issues and enhance their capability to solve complex engineering problems.展开更多
This study established a novel method for the simultaneous detection of two-component gases.Radio frequency(RF)white noise disturbance laser current and wavelength modulation were simultaneously used to improve the of...This study established a novel method for the simultaneous detection of two-component gases.Radio frequency(RF)white noise disturbance laser current and wavelength modulation were simultaneously used to improve the off-axis integrated cavity output spectroscopy technique,and a high-precision dual modulation OA-ICOS(RF-WM-OA-ICOS)system was established.The two laser beams were coupled into one laser beam that was applied incident to the cavity of RF-WM-OA-ICOS system.The second harmonic signals of CH_(4)and CO_(2)gas simultaneously appeared in the rising or falling edge of a triangular wave.This method was used to measure CH_(4)and CO_(2)with different concentrations.The results indicated that the proposed system has high stability and can accurately and simultaneously measure the concentrations of CH_(4)and CO_(2),with an optimal integration time of 220 s.The minimum detection limit was 10 ppb for CH_(4)and 1.5 ppm for CO_(2).The corresponding noise equivalent absorption sensitivity values were calculated as 2.67×10^(-13)cm^(-1)·Hz^(-1/2)and 5.18×10^(-11)cm^(-1)·Hz^(-1/2),respectively.The proposed dual-component gas simultaneous detection method can also be used for high-precision simultaneous detection of other gases.Therefore,this study may serve as a reference for developing portable multicomponent gas analyzers.展开更多
文摘本文探讨了新工科教育模式下《增材制造技术》课程的项目制学习实践。针对传统工科教育中存在的过分侧重于理论讲授和以考试成绩评估学习达成度的问题,项目制学习提供了一种解决方案。本文详细介绍了《增材制造技术》课程的设计、实施过程、成绩评价体系及课程效果,通过项目制学习,学生在项目实践中既获取了知识和技能,深入理解了增材制造技术,又训练了有效沟通专业问题的能力,提高了解决复杂工程问题的能力。This article explores the practice of project-based learning in “Additive Manufacturing Technology” course under the emerging engineering education model. Addressing the issue of traditional engineering education that overemphasizes theoretical teaching and the assessment of learning outcomes through examination scores, project-based learning offers a solution. The article provides a detailed introduction to the design, implementation process, grading system, and course outcomes of the “Additive Manufacturing Technology” course. Through project-based learning, students not only gain knowledge and skills and deepen their understanding of additive manufacturing technology in practical projects, but also develop the ability to effectively communicate professional issues and enhance their capability to solve complex engineering problems.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.62005108 and 62205134)the National Key Research and Development Program of China(Grant No.2022YFC2807701)the Natural Science Foundation of the Higher Education Institutions of Jiangsu Province,China(Grant Nos.20KJB140009 and 21KJB140008)。
文摘This study established a novel method for the simultaneous detection of two-component gases.Radio frequency(RF)white noise disturbance laser current and wavelength modulation were simultaneously used to improve the off-axis integrated cavity output spectroscopy technique,and a high-precision dual modulation OA-ICOS(RF-WM-OA-ICOS)system was established.The two laser beams were coupled into one laser beam that was applied incident to the cavity of RF-WM-OA-ICOS system.The second harmonic signals of CH_(4)and CO_(2)gas simultaneously appeared in the rising or falling edge of a triangular wave.This method was used to measure CH_(4)and CO_(2)with different concentrations.The results indicated that the proposed system has high stability and can accurately and simultaneously measure the concentrations of CH_(4)and CO_(2),with an optimal integration time of 220 s.The minimum detection limit was 10 ppb for CH_(4)and 1.5 ppm for CO_(2).The corresponding noise equivalent absorption sensitivity values were calculated as 2.67×10^(-13)cm^(-1)·Hz^(-1/2)and 5.18×10^(-11)cm^(-1)·Hz^(-1/2),respectively.The proposed dual-component gas simultaneous detection method can also be used for high-precision simultaneous detection of other gases.Therefore,this study may serve as a reference for developing portable multicomponent gas analyzers.
