by deep analyzing the tested value of the concrete strength with the rebound method and combining with the inverse regression theory, a rebound strength curve ( empirical formula ) of three-parameter inverse regression is put forward 摘要基于对回弹法检测混凝土强度被检测量,结合逆回归理论提出了一种逆回归三参数回弹法测强曲线模型(经验公式)。
the physical meaning of sensitive index for six worldwide representative models of crop response to water ( stewart a, jensen, minhas, blank, stewart band singh ) was analyzed based on multi-variable linear regression theory and was verified by a case study 结果表明,敏感指标是以作物水分响应模型所表达的统一回归方程的偏回归系数,反映回归自变量(水分)对因变量(产量)的作用效应,故可度量作物对水分的敏感程度。