经济统计学是一门具有极强理论性和实践性的多科交叉性学科当前,受高校高等教育质量问责等因素的影响,基于学习产出的教学模式(Outcomes Based Education,缩写为O BE)成为越来越多学科教育改革的重要手段。文章在系统地阐述了OBE教育模...经济统计学是一门具有极强理论性和实践性的多科交叉性学科当前,受高校高等教育质量问责等因素的影响,基于学习产出的教学模式(Outcomes Based Education,缩写为O BE)成为越来越多学科教育改革的重要手段。文章在系统地阐述了OBE教育模式的概念、经济统计学学科特点和以往教学问题的基础上,提出了该专业课程建设的具体措施,为进一步进行教学改革以及不断完善专业课程教学体系提供了一种新的方法。展开更多
One of the Holocene abrupt events around 4200 years ago,lasting for~200 years,is thought to have caused cultural disruptions,yet terrestrial climatic status right after the cold/dry event remains poorly defined and is...One of the Holocene abrupt events around 4200 years ago,lasting for~200 years,is thought to have caused cultural disruptions,yet terrestrial climatic status right after the cold/dry event remains poorly defined and is often presumed that a generally cool condition prevailed during the Bronze Age(~4000-2200 years ago).Here we report an alkenone-based summer temperature record over the past~12,000 years,in addition to two updated alkenone records,from Northwest China,providing new insights into the climatic status right after the event.Our results indicate that exceptional terrestrial warmth,up to~6°C,occurred around 4200-2800 years ago during the Bronze Age,superimposed on the long-term Holocene cooling trend.The exceptional warmth in Northwest China,together with other climate anomalies elsewhere,suggests an unusual large-scale climatic reorganization at 4200-2800 years ago when solar activity remained high,with important implications to the climate background for cultural developments during the Bronze Age.展开更多
文摘经济统计学是一门具有极强理论性和实践性的多科交叉性学科当前,受高校高等教育质量问责等因素的影响,基于学习产出的教学模式(Outcomes Based Education,缩写为O BE)成为越来越多学科教育改革的重要手段。文章在系统地阐述了OBE教育模式的概念、经济统计学学科特点和以往教学问题的基础上,提出了该专业课程建设的具体措施,为进一步进行教学改革以及不断完善专业课程教学体系提供了一种新的方法。
基金financially supported by the Strategic Priority Research Program of Chinese Academy of Sciences(XDB40000000)the National Natural Science Foundation of China(41672349,40802084)Hong Kong Research Grants Council(17325516)。
文摘One of the Holocene abrupt events around 4200 years ago,lasting for~200 years,is thought to have caused cultural disruptions,yet terrestrial climatic status right after the cold/dry event remains poorly defined and is often presumed that a generally cool condition prevailed during the Bronze Age(~4000-2200 years ago).Here we report an alkenone-based summer temperature record over the past~12,000 years,in addition to two updated alkenone records,from Northwest China,providing new insights into the climatic status right after the event.Our results indicate that exceptional terrestrial warmth,up to~6°C,occurred around 4200-2800 years ago during the Bronze Age,superimposed on the long-term Holocene cooling trend.The exceptional warmth in Northwest China,together with other climate anomalies elsewhere,suggests an unusual large-scale climatic reorganization at 4200-2800 years ago when solar activity remained high,with important implications to the climate background for cultural developments during the Bronze Age.
