2

Between Two Shores Pub Date : 1871-12-31 DOI:10.2307/j.ctvg2539k.5

Aulus Gellius

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引用次数: 0

摘要

细化。针对所有反射的f2改进。加权R因子wR和拟合优度S基于f2，常规R因子R基于F，当F为负f2时，F设为零。f2 > σ (f2)的阈值表达式仅用于计算R因子(gt)等。并且与选择用于细化的反射无关。基于f2的R -因子在统计上大约是基于F的R -因子的两倍，而基于ALL数据的R -因子会更大。

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Refinement . Refinement of F 2 against ALL reflections. The weighted R -factor wR and goodness of fit S are based on F 2 , conventional R -factors R are based on F , with F set to zero for negative F 2 . The threshold expression of F 2 > σ ( F 2 ) is used only for calculating R -factors(gt) etc . and is not relevant to the choice of reflections for refinement. R -factors based on F 2 are statistically about twice as large as those based on F , and R - factors based on ALL data will be even larger.

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Between Two Shores

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