传统的地理教学方式存在许多问题。基于地理教学的重要性、地球知识的时代背景、地理知识与生活实际的联系以及楚雄师院附中初二地理教学的现状和问题,本文将围绕寰宇地理在初中地理教学中的应用展开研究。研究背景方面,针对当前初中地...传统的地理教学方式存在许多问题。基于地理教学的重要性、地球知识的时代背景、地理知识与生活实际的联系以及楚雄师院附中初二地理教学的现状和问题,本文将围绕寰宇地理在初中地理教学中的应用展开研究。研究背景方面,针对当前初中地理教育的现状与挑战,引入寰宇地理软件作为教学辅助工具,旨在提升教学质量与学生学习兴趣。研究对象为楚雄师院附中初二地理课堂,主要探讨了寰宇地理在地理教学中的实际运用及其效果。效果评估方面,通过对使用寰宇地理软件的学生进行问卷调查,发现该软件在提高学生的学习兴趣、地理知识掌握程度以及空间认知能力等方面均有显著成效。这一发现对于提升初中地理教学质量具有重要的启示意义。 There are many problems with traditional geography teaching methods. Based on the importance of geography teaching, the historical background of Earth knowledge, the connection between geography knowledge and practical life, and the current situation and problems of geography teaching in the second year of Chuxiong Normal University Affiliated Middle School, this article will focus on the application of Global Geography in middle school geography teaching. In terms of research background, in response to the current situation and challenges of junior high school geography education, the introduction of Global Geography software as a teaching auxiliary tool aims to improve teaching quality and student learning interest. The research object is the geography classroom of Chuxiong Normal University Affiliated Middle School in the second year of junior high school, mainly exploring the practical application and effects of Global Geography in geography teaching. In terms of effectiveness evaluation, a questionnaire survey was conducted among students using the Global Geography software, and it was found that the software has significantly improved their learning interest, geographic knowledge mastery, and spatial cognitive abilities. This discovery has important implications for improving the quality of middle school geography teaching.展开更多
Nonreciprocal optical devices are essential for laser protection,modern optical communication and quantum information processing by enforcing one-way light propagation.The conventional Faraday magneto-optical nonrecip...Nonreciprocal optical devices are essential for laser protection,modern optical communication and quantum information processing by enforcing one-way light propagation.The conventional Faraday magneto-optical nonreciprocal devices rely on a strong magnetic field,which is provided by a permanent magnet.As a result,the isolation direction of such devices is fixed and severely restricts their applications in quantum networks.In this work,we experimentally demonstrate the simultaneous one-way transmission and unidirectional reflection by using a magneto-optical Fabry-Pérot cavity and a magnetic field strength of 50 mT.An optical isolator and a three-port quasi-circulator are realized based on this nonreciprocal cavity system.The isolator achieves an isolation ratio of up to 22 dB and an averaged insertion loss down to 0.97 dB.The quasi-circulator is realized with a fidelity exceeding 99% and an overall survival probability of 89.9%,corresponding to an insertion loss of~0.46 dB.The magnetic field is provided by an electromagnetic coil,thereby allowing for reversing the light circulating path.The reversible quasi-circulator paves the way for building reconfigurable quantum networks.展开更多
文摘传统的地理教学方式存在许多问题。基于地理教学的重要性、地球知识的时代背景、地理知识与生活实际的联系以及楚雄师院附中初二地理教学的现状和问题,本文将围绕寰宇地理在初中地理教学中的应用展开研究。研究背景方面,针对当前初中地理教育的现状与挑战,引入寰宇地理软件作为教学辅助工具,旨在提升教学质量与学生学习兴趣。研究对象为楚雄师院附中初二地理课堂,主要探讨了寰宇地理在地理教学中的实际运用及其效果。效果评估方面,通过对使用寰宇地理软件的学生进行问卷调查,发现该软件在提高学生的学习兴趣、地理知识掌握程度以及空间认知能力等方面均有显著成效。这一发现对于提升初中地理教学质量具有重要的启示意义。 There are many problems with traditional geography teaching methods. Based on the importance of geography teaching, the historical background of Earth knowledge, the connection between geography knowledge and practical life, and the current situation and problems of geography teaching in the second year of Chuxiong Normal University Affiliated Middle School, this article will focus on the application of Global Geography in middle school geography teaching. In terms of research background, in response to the current situation and challenges of junior high school geography education, the introduction of Global Geography software as a teaching auxiliary tool aims to improve teaching quality and student learning interest. The research object is the geography classroom of Chuxiong Normal University Affiliated Middle School in the second year of junior high school, mainly exploring the practical application and effects of Global Geography in geography teaching. In terms of effectiveness evaluation, a questionnaire survey was conducted among students using the Global Geography software, and it was found that the software has significantly improved their learning interest, geographic knowledge mastery, and spatial cognitive abilities. This discovery has important implications for improving the quality of middle school geography teaching.
基金supported by the National Key R&D Program of China(Grant No.2019YFA0308700)the National Natural Science Foundation of China(Grant Nos.11890704,92365107,and 12305020)+2 种基金the Program for Innovative Talents and Teams in Jiangsu(Grant No.JSSCTD202138)the Shccig-Qinling Program,the China Postdoctoral Science Foundation(Grant No.2023M731613)the Jiangsu Funding Program for Excellent Postdoctoral Talent(Grant No.2023ZB708)。
文摘Nonreciprocal optical devices are essential for laser protection,modern optical communication and quantum information processing by enforcing one-way light propagation.The conventional Faraday magneto-optical nonreciprocal devices rely on a strong magnetic field,which is provided by a permanent magnet.As a result,the isolation direction of such devices is fixed and severely restricts their applications in quantum networks.In this work,we experimentally demonstrate the simultaneous one-way transmission and unidirectional reflection by using a magneto-optical Fabry-Pérot cavity and a magnetic field strength of 50 mT.An optical isolator and a three-port quasi-circulator are realized based on this nonreciprocal cavity system.The isolator achieves an isolation ratio of up to 22 dB and an averaged insertion loss down to 0.97 dB.The quasi-circulator is realized with a fidelity exceeding 99% and an overall survival probability of 89.9%,corresponding to an insertion loss of~0.46 dB.The magnetic field is provided by an electromagnetic coil,thereby allowing for reversing the light circulating path.The reversible quasi-circulator paves the way for building reconfigurable quantum networks.
