大学生学科专业竞赛是提高大学生实践创新能力的良好契机。通过建设学科专业竞赛组织管理新模式能够更好地组织、管理竞赛,提升本专业学生的实践创新水平。文章提出了组织管理学科竞赛的新模式,具体为竞赛的选拔模式、竞赛教练组的组建...大学生学科专业竞赛是提高大学生实践创新能力的良好契机。通过建设学科专业竞赛组织管理新模式能够更好地组织、管理竞赛,提升本专业学生的实践创新水平。文章提出了组织管理学科竞赛的新模式,具体为竞赛的选拔模式、竞赛教练组的组建和运行模式、参赛学生的培训与指导模式。新模式下学科专业竞赛与教学改革两者相辅相成,相互融合,能够有效强化学生实践能力,培育具有创新实践意识的高素质人才。College students’ discipline competition is a good opportunity to improve college students’ practice and innovation ability. Through the construction of the new organization and management mode of discipline competition, it can better organize and manage the competition and improve the practice and innovation level of students of this major. Put forward the new mode of organization and management discipline competition, specific for the selection mode of competition, competition coaching staff form and operation mode, participating students training and guidance mode. Under the new mode, discipline competition and teaching reform complement each other, can effectively strengthen students’ practical ability, and cultivate high-quality talents with innovative practice consciousness.展开更多
Optical chaos has attracted widespread attention owing to its complex dynamic behaviors.However,the time delay signature(TDS)caused by the external cavity mode reduces the complexity of optical chaos.We propose and nu...Optical chaos has attracted widespread attention owing to its complex dynamic behaviors.However,the time delay signature(TDS)caused by the external cavity mode reduces the complexity of optical chaos.We propose and numerically demonstrate the critical dispersion of chirped fiber Bragg grating(CFBG)for eliminating the TDS of laser chaos in this work.The critical dispersion,as a function of relaxation frequency and bandwidth of the optical spectrum,is found through extensive dynamics simulations.It is shown that the TDS can be eliminated when the dispersion of CFBG is above this critical dispersion.In addition,the influence of dispersive feedback light and output light from a laser is investigated.These results provide important quantitative guidance for designing chaotic semiconductor lasers without TDS.展开更多
文摘大学生学科专业竞赛是提高大学生实践创新能力的良好契机。通过建设学科专业竞赛组织管理新模式能够更好地组织、管理竞赛,提升本专业学生的实践创新水平。文章提出了组织管理学科竞赛的新模式,具体为竞赛的选拔模式、竞赛教练组的组建和运行模式、参赛学生的培训与指导模式。新模式下学科专业竞赛与教学改革两者相辅相成,相互融合,能够有效强化学生实践能力,培育具有创新实践意识的高素质人才。College students’ discipline competition is a good opportunity to improve college students’ practice and innovation ability. Through the construction of the new organization and management mode of discipline competition, it can better organize and manage the competition and improve the practice and innovation level of students of this major. Put forward the new mode of organization and management discipline competition, specific for the selection mode of competition, competition coaching staff form and operation mode, participating students training and guidance mode. Under the new mode, discipline competition and teaching reform complement each other, can effectively strengthen students’ practical ability, and cultivate high-quality talents with innovative practice consciousness.
基金the National Natural Science Foundation of China(Grant No.62105190)the Natural Science Foundation of Shanxi Province of China(Grant No.20210302124268)+1 种基金the Scientific and Technological Innovation Programs of Higher Education Institutions of Shanxi Province of China(Grant No.2021L285)the Youth Researchof Shanxi University of Finance and Economics(Grant No.QN-202015)。
文摘Optical chaos has attracted widespread attention owing to its complex dynamic behaviors.However,the time delay signature(TDS)caused by the external cavity mode reduces the complexity of optical chaos.We propose and numerically demonstrate the critical dispersion of chirped fiber Bragg grating(CFBG)for eliminating the TDS of laser chaos in this work.The critical dispersion,as a function of relaxation frequency and bandwidth of the optical spectrum,is found through extensive dynamics simulations.It is shown that the TDS can be eliminated when the dispersion of CFBG is above this critical dispersion.In addition,the influence of dispersive feedback light and output light from a laser is investigated.These results provide important quantitative guidance for designing chaotic semiconductor lasers without TDS.
