In this article, the authors obtain some theoretical results for 2_(IV)^(m-p) designs to have the maximum number of clear two-factor interactions by considering the number of two-factor interactions that are not clear...In this article, the authors obtain some theoretical results for 2_(IV)^(m-p) designs to have the maximum number of clear two-factor interactions by considering the number of two-factor interactions that are not clear. Several 2_(IV)^(m-p) designs with the maximum number of clear two-factor interactions, judged using these results, are provided for illustration.展开更多
r-learning,which is based on e-learning and u-learning,is defined as a learning support system that intelligent robots serve verbal and nonverbal interactions on ubiquitous computing environment.In order to guarantee ...r-learning,which is based on e-learning and u-learning,is defined as a learning support system that intelligent robots serve verbal and nonverbal interactions on ubiquitous computing environment.In order to guarantee the advantages of r-learning contents with no limits of timc and place and with nonverbal interaction which are not in e-learning contents,in recent years,assessment criteria for r-learning contents are urgently rcquired.Therefore,the reliable and valid assessment criteria were developed for nonverbal interaction contents in r-learning,and its detailed research content is as follows.First,assessment criteria for nonverbal interaction in r-learning contents will be specified into gesture,facial expression,semi-verbal message,distance,physical contact and time.Second,the validity of the developed assessment criteria will be proved by statistics.Consequently,the assessment criteria for nonverbal interaction contents will be helpful when choosing the better r-learning content and producing the better r-learning content,and the reliability of school education is improved ultimately.展开更多
【目的】探究低温条件下茶树在不同红光与远红光比值(red to far-red light ratio,R/FR)光环境中的生理与分子响应,为工厂化光设施育苗冬季补光提供理论指导。【方法】以茶树品种‘谷雨春’为材料,设置远红光处理(FR,R/FR=4.1)和白光处...【目的】探究低温条件下茶树在不同红光与远红光比值(red to far-red light ratio,R/FR)光环境中的生理与分子响应,为工厂化光设施育苗冬季补光提供理论指导。【方法】以茶树品种‘谷雨春’为材料,设置远红光处理(FR,R/FR=4.1)和白光处理(CK,R/FR=10.4),研究低温条件(10℃)下不同R/FR比值光环境对茶树气体交换参数、荧光参数及光敏色素互作因子(phytochrome interacting factors,PIFs)表达量的影响。【结果】低温条件下添加远红光、降低R/FR比值会导致茶树叶片蒸腾速率(T_(r))、净光合速率(P_(n))与电子传递速率(electron transport rate,ETR)下降,非调节性能量耗散的量子产量Y(NO)所占的比例升高,实际量子产量(YⅡ)和调节性能量耗散的量子产量Y(NPQ)所占的比例下降,叶绿素合成的重要调节因子CsPIF3a基因下调表达。【结论】低温条件下低比值的R/FR光环境削弱了茶树叶片的光合电子传递能力,抑制叶绿素合成相关基因的表达,降低光合能力,叶片受到光损伤。展开更多
基金Research supported by the NNSF of China (10301015: 10571093)the SRFDP of China (20050055038)the China Portdoctoral Science Foundation (20060390169)Liu and Zhang's research was also supported by the Visiting Scholar Program at Chern Institute of Mathematics.
文摘In this article, the authors obtain some theoretical results for 2_(IV)^(m-p) designs to have the maximum number of clear two-factor interactions by considering the number of two-factor interactions that are not clear. Several 2_(IV)^(m-p) designs with the maximum number of clear two-factor interactions, judged using these results, are provided for illustration.
基金Project(2011)supported by the research grant of the Chungbuk National University,South Korea
文摘r-learning,which is based on e-learning and u-learning,is defined as a learning support system that intelligent robots serve verbal and nonverbal interactions on ubiquitous computing environment.In order to guarantee the advantages of r-learning contents with no limits of timc and place and with nonverbal interaction which are not in e-learning contents,in recent years,assessment criteria for r-learning contents are urgently rcquired.Therefore,the reliable and valid assessment criteria were developed for nonverbal interaction contents in r-learning,and its detailed research content is as follows.First,assessment criteria for nonverbal interaction in r-learning contents will be specified into gesture,facial expression,semi-verbal message,distance,physical contact and time.Second,the validity of the developed assessment criteria will be proved by statistics.Consequently,the assessment criteria for nonverbal interaction contents will be helpful when choosing the better r-learning content and producing the better r-learning content,and the reliability of school education is improved ultimately.
文摘【目的】探究低温条件下茶树在不同红光与远红光比值(red to far-red light ratio,R/FR)光环境中的生理与分子响应,为工厂化光设施育苗冬季补光提供理论指导。【方法】以茶树品种‘谷雨春’为材料,设置远红光处理(FR,R/FR=4.1)和白光处理(CK,R/FR=10.4),研究低温条件(10℃)下不同R/FR比值光环境对茶树气体交换参数、荧光参数及光敏色素互作因子(phytochrome interacting factors,PIFs)表达量的影响。【结果】低温条件下添加远红光、降低R/FR比值会导致茶树叶片蒸腾速率(T_(r))、净光合速率(P_(n))与电子传递速率(electron transport rate,ETR)下降,非调节性能量耗散的量子产量Y(NO)所占的比例升高,实际量子产量(YⅡ)和调节性能量耗散的量子产量Y(NPQ)所占的比例下降,叶绿素合成的重要调节因子CsPIF3a基因下调表达。【结论】低温条件下低比值的R/FR光环境削弱了茶树叶片的光合电子传递能力,抑制叶绿素合成相关基因的表达,降低光合能力,叶片受到光损伤。
