To quantify the relationships between rice plant architecture parameters and the corresponding organ biomass, and to research on functional structural plant models of rice plant, this paper presented a biomass-based m...To quantify the relationships between rice plant architecture parameters and the corresponding organ biomass, and to research on functional structural plant models of rice plant, this paper presented a biomass-based model of aboveground architectural parameters of rice （Oryza sativa L.） in the young seedling stage, designed to explain effects of cultivars and environmental conditions on rice aboveground morphogenesis at the individual leaf level. Various model variables, including biomass of blade and blade length, were parameterized for rice based on data derived from an outdoor experiment with rice cv. Liangyou 108, 86You 8, Nanjing 43, and Yangdao 6. The organ dimensions of rice aboveground were modelled taking corresponding organ biomass as an independent variable. Various variables in rice showed marked consistency in observation and simulation, suggesting possibilities for a general rice architectural model in the young seedling stage. Our descriptive model was suitable for our objective. However, they can set the stage for connection to physiological model via biomass and development of functional structural rice models （FSRM）, and start with the localized production and partitioning of assimilates as affected by abiotic growth factors. The finding of biomass-based rice architectural parameter models also can be used in morphological models of blade, sheath, and tiller of the other stages in rice life.展开更多
In this paper, the many indices used in validation of crop models, such as RMSE （root mean square errors）, Sd （standard error of absolute difference）, da （mean absolute difference）, dap （ratio of da to the mean...In this paper, the many indices used in validation of crop models, such as RMSE （root mean square errors）, Sd （standard error of absolute difference）, da （mean absolute difference）, dap （ratio of da to the mean observation）, r （correlation）, and R2 （determination coefficient）, are compared for the same rice architectural parameter model, and their advantages and disadvantages are analyzed. A new index for validation of crop models, dap between the observed and the simulated values, is proposed, with dap〈5% as the suggested standard for precision of crop models. The different kinds of validation methods in crop models should be combined in the following aspects：（1） calculating da and dap; （2） calculating the RMSE or Sd; （3） calculating r and R2, at the same time, plotting 1：1 diagram.展开更多
目的研究细胞群落参数(CPD)在肺结核感染诊断中的应用价值。方法采用Dx H 800血液分析仪,分析239份全血样本,每个样本均获得56项白细胞CPD参数和56项有核红细胞CPD参数,其中观察组105例,对照组134例,比较观察组与对照组CPD参数间的差异...目的研究细胞群落参数(CPD)在肺结核感染诊断中的应用价值。方法采用Dx H 800血液分析仪,分析239份全血样本,每个样本均获得56项白细胞CPD参数和56项有核红细胞CPD参数,其中观察组105例,对照组134例,比较观察组与对照组CPD参数间的差异。结果2组间具有差异的CPD参数共有37项,其中5项CPD参数AUC>0.8,当MN-V-MO、SD-LALS-MO、MN-AL2-EO、SD-V-MO、SD-LMALS-N-GRMO截断值分别取≥167.5、≥25.81、≥117.5、≥18.14、≥33.66时,其灵敏度和特异度分别为72%和93%、88%和80%、75%和87%、84%和90%、63%和86%,将5种差异CPD参数建立诊断模型,MN-V-MO+SD-V-MO+SD-LALS-MO+MN-AL2-EO+SD-LMALS-N-GRMO联合诊断时,ROC曲线下面积为0.982,其灵敏度以及特异度分别达94%和99%。结论细胞CPD参数的检测可以协助临床诊断肺结核感染,具有较高的临床应用价值。展开更多
基金supported by the National High-Tech R&D Program of China(2006AA10Z230, 2006AA10Z219-1)the National Natural Science Foundation of China (31171455)+3 种基金the Jiangsu Province Agricultural Scientific Technology Innovation Fund,China (CX(10)221)the Jiangsu Province Postdoctoral Research Program, China (5910907)the No-Profit Industry(Meteorology) Research Program, China (GYHY201006027,GYHY201106027)the Jiangsu Government Scholar-ship for Overseas Studies, Jiangsu Academy of Agricultural Sciences Founding, China (6510733)
文摘To quantify the relationships between rice plant architecture parameters and the corresponding organ biomass, and to research on functional structural plant models of rice plant, this paper presented a biomass-based model of aboveground architectural parameters of rice （Oryza sativa L.） in the young seedling stage, designed to explain effects of cultivars and environmental conditions on rice aboveground morphogenesis at the individual leaf level. Various model variables, including biomass of blade and blade length, were parameterized for rice based on data derived from an outdoor experiment with rice cv. Liangyou 108, 86You 8, Nanjing 43, and Yangdao 6. The organ dimensions of rice aboveground were modelled taking corresponding organ biomass as an independent variable. Various variables in rice showed marked consistency in observation and simulation, suggesting possibilities for a general rice architectural model in the young seedling stage. Our descriptive model was suitable for our objective. However, they can set the stage for connection to physiological model via biomass and development of functional structural rice models （FSRM）, and start with the localized production and partitioning of assimilates as affected by abiotic growth factors. The finding of biomass-based rice architectural parameter models also can be used in morphological models of blade, sheath, and tiller of the other stages in rice life.
基金supported by the National High-Tech R&D Program (2006AA10Z230,2006AA10Z219-1)the National Natural Science Foundation of China (31171455)+3 种基金the Jiangsu Province Agricultural Scientific Technology Innovation Fund, China (CX(10)221, CX (11)2042)the Agricultural Scientific Technology Support Program, Jiangsu Province, China (BE2008397,BE2011342)the No-Profit Industry (Meteorology) Research Program, China (GYHY201006027, GYHY201106027)the Jiangsu Government Scholarship for Overseas Studies, China
文摘In this paper, the many indices used in validation of crop models, such as RMSE （root mean square errors）, Sd （standard error of absolute difference）, da （mean absolute difference）, dap （ratio of da to the mean observation）, r （correlation）, and R2 （determination coefficient）, are compared for the same rice architectural parameter model, and their advantages and disadvantages are analyzed. A new index for validation of crop models, dap between the observed and the simulated values, is proposed, with dap〈5% as the suggested standard for precision of crop models. The different kinds of validation methods in crop models should be combined in the following aspects：（1） calculating da and dap; （2） calculating the RMSE or Sd; （3） calculating r and R2, at the same time, plotting 1：1 diagram.
文摘目的研究细胞群落参数(CPD)在肺结核感染诊断中的应用价值。方法采用Dx H 800血液分析仪,分析239份全血样本,每个样本均获得56项白细胞CPD参数和56项有核红细胞CPD参数,其中观察组105例,对照组134例,比较观察组与对照组CPD参数间的差异。结果2组间具有差异的CPD参数共有37项,其中5项CPD参数AUC>0.8,当MN-V-MO、SD-LALS-MO、MN-AL2-EO、SD-V-MO、SD-LMALS-N-GRMO截断值分别取≥167.5、≥25.81、≥117.5、≥18.14、≥33.66时,其灵敏度和特异度分别为72%和93%、88%和80%、75%和87%、84%和90%、63%和86%,将5种差异CPD参数建立诊断模型,MN-V-MO+SD-V-MO+SD-LALS-MO+MN-AL2-EO+SD-LMALS-N-GRMO联合诊断时,ROC曲线下面积为0.982,其灵敏度以及特异度分别达94%和99%。结论细胞CPD参数的检测可以协助临床诊断肺结核感染,具有较高的临床应用价值。
