Eight provenances and 190 open pollinated families of Eucalyptus urophylla were studied at ages of 1,1.5,2 and 3.5 years.There were significant differences among provenances in volume and among families in height, DBH...Eight provenances and 190 open pollinated families of Eucalyptus urophylla were studied at ages of 1,1.5,2 and 3.5 years.There were significant differences among provenances in volume and among families in height, DBH and volume.The variations of growth characters are moderately inheritable.Based on the results of age to age genotypic and phenotypic correlations,the early selection for E.urophylla can be implemented at the age of 2 years.Superior provenances and families were selected on the basis of performance level.Selection results were also presented in this paper.展开更多
考虑负荷和发电机调节特性的动态潮流是EMS和DTS系统的基础功能之一。采用分解协调方式的多调度中心间分布式动态潮流计算是全网在线一体化潮流分析的一种新的途径。本文以隐函数形式的边界协调方程对全网动态潮流方程协调求解问题建模...考虑负荷和发电机调节特性的动态潮流是EMS和DTS系统的基础功能之一。采用分解协调方式的多调度中心间分布式动态潮流计算是全网在线一体化潮流分析的一种新的途径。本文以隐函数形式的边界协调方程对全网动态潮流方程协调求解问题建模。该模型可统一考虑边界节点功率平衡和不平衡功率在分区电网间的合理分配问题。进一步,本文采用Jacobian Free Newton GMRES方法实现协调求解过程。广域网络通信环境中的测试结果表明所提算法通信接口简单、通信次数较少,能够满足在线应用的需求。展开更多
文摘Eight provenances and 190 open pollinated families of Eucalyptus urophylla were studied at ages of 1,1.5,2 and 3.5 years.There were significant differences among provenances in volume and among families in height, DBH and volume.The variations of growth characters are moderately inheritable.Based on the results of age to age genotypic and phenotypic correlations,the early selection for E.urophylla can be implemented at the age of 2 years.Superior provenances and families were selected on the basis of performance level.Selection results were also presented in this paper.
文摘考虑负荷和发电机调节特性的动态潮流是EMS和DTS系统的基础功能之一。采用分解协调方式的多调度中心间分布式动态潮流计算是全网在线一体化潮流分析的一种新的途径。本文以隐函数形式的边界协调方程对全网动态潮流方程协调求解问题建模。该模型可统一考虑边界节点功率平衡和不平衡功率在分区电网间的合理分配问题。进一步,本文采用Jacobian Free Newton GMRES方法实现协调求解过程。广域网络通信环境中的测试结果表明所提算法通信接口简单、通信次数较少,能够满足在线应用的需求。