DORA(double order approximation)方法是近年提出的求解动力学方程的一种算法,对于圣维南方程采用DORA算法时,方程被分解成两步来解,每一步均求解一个简单的微分方程组.第一步求解一个运动问题,采用显式求解.第二步求解一个扩散问题,...DORA(double order approximation)方法是近年提出的求解动力学方程的一种算法,对于圣维南方程采用DORA算法时,方程被分解成两步来解,每一步均求解一个简单的微分方程组.第一步求解一个运动问题,采用显式求解.第二步求解一个扩散问题,采用隐式差分格式.DORA方法和传统典型算法相比最大的优点是可以计算初始水深是0的情况.以物理守恒定理为基础,比差分格式物理意义更明显;和特征线法相比,不受库朗稳定性条件约束,无条件稳定.展开更多
DORA(double order approximation)方法是近年提出的求解动力学方程的一种算法。DORA方法物理意义明显,不受库朗稳定性条件约束,无条件稳定。DORA方法和传统典型算法相比最大的优点是可以计算初始水深是零的情况。在溃坝模拟中,经与解...DORA(double order approximation)方法是近年提出的求解动力学方程的一种算法。DORA方法物理意义明显,不受库朗稳定性条件约束,无条件稳定。DORA方法和传统典型算法相比最大的优点是可以计算初始水深是零的情况。在溃坝模拟中,经与解析解相比较可知,DORA算法在间断波附近没有出现数值振荡,水位、流速和解析解均比较吻合。证明DORA算法能很好模拟溃坝波的运动。展开更多
The evaluation of academic researchers often relies on quantitative metrics,despite their limitations.This paper examines the qualitative assessment approach used by the French National Center for Scientific Research(...The evaluation of academic researchers often relies on quantitative metrics,despite their limitations.This paper examines the qualitative assessment approach used by the French National Center for Scientific Research(CNRS)in Computer Science(Section 6),as presented by a National Committee for Scientific Research(CoNRS)committee president.Rejecting bibliometrics like impact factors,CNRS emphasizes in-depth peer review of research quality,diverse outputs(e.g.,software and datasets),and field-specific considerations.The process,aligned with the San Francisco Declaration on Research Assessment(DORA),faces challenges in scalability and subjectivity,addressed through committee diversity and structured deliberation.This work provides insights for institutions seeking fairer,more holistic research evaluation frameworks.展开更多
The Declaration on Research Assessment(DORA)recognizes the need to improve the ways in which the outputs of scholarly research are evaluated.The declaration was developed in 2012 during the Annual Meeting of the Ameri...The Declaration on Research Assessment(DORA)recognizes the need to improve the ways in which the outputs of scholarly research are evaluated.The declaration was developed in 2012 during the Annual Meeting of the American Society for Cell Biology in San Francisco.It has become a worldwide initiative covering all scholarly disciplines and all key stakeholders including funders,publishers,professional societies,institutions,and researchers.We encourage all individuals and organizations who are interested in developing and promoting best practice in the assessment of scholarly research to sign DORA.展开更多
文摘DORA(double order approximation)方法是近年提出的求解动力学方程的一种算法,对于圣维南方程采用DORA算法时,方程被分解成两步来解,每一步均求解一个简单的微分方程组.第一步求解一个运动问题,采用显式求解.第二步求解一个扩散问题,采用隐式差分格式.DORA方法和传统典型算法相比最大的优点是可以计算初始水深是0的情况.以物理守恒定理为基础,比差分格式物理意义更明显;和特征线法相比,不受库朗稳定性条件约束,无条件稳定.
文摘DORA(double order approximation)方法是近年提出的求解动力学方程的一种算法。DORA方法物理意义明显,不受库朗稳定性条件约束,无条件稳定。DORA方法和传统典型算法相比最大的优点是可以计算初始水深是零的情况。在溃坝模拟中,经与解析解相比较可知,DORA算法在间断波附近没有出现数值振荡,水位、流速和解析解均比较吻合。证明DORA算法能很好模拟溃坝波的运动。
文摘The evaluation of academic researchers often relies on quantitative metrics,despite their limitations.This paper examines the qualitative assessment approach used by the French National Center for Scientific Research(CNRS)in Computer Science(Section 6),as presented by a National Committee for Scientific Research(CoNRS)committee president.Rejecting bibliometrics like impact factors,CNRS emphasizes in-depth peer review of research quality,diverse outputs(e.g.,software and datasets),and field-specific considerations.The process,aligned with the San Francisco Declaration on Research Assessment(DORA),faces challenges in scalability and subjectivity,addressed through committee diversity and structured deliberation.This work provides insights for institutions seeking fairer,more holistic research evaluation frameworks.
文摘The Declaration on Research Assessment(DORA)recognizes the need to improve the ways in which the outputs of scholarly research are evaluated.The declaration was developed in 2012 during the Annual Meeting of the American Society for Cell Biology in San Francisco.It has become a worldwide initiative covering all scholarly disciplines and all key stakeholders including funders,publishers,professional societies,institutions,and researchers.We encourage all individuals and organizations who are interested in developing and promoting best practice in the assessment of scholarly research to sign DORA.
