变动（也即风险）越大，夏普比率越低。
夏普比率建立在非常健康的1.27年度回报上。
The Sharpe ratio based on annual returns was a very healthy 1.27.
是交易员越来越出色，还是雇主在不断淘汰夏普比率低的交易员？
Were the traders getting better or were employers culling low Sharpe traders?
第四章讨论了夏普比率下的再保险最优化模型及其适用条件，推出了更一般的模型。
Chapter 4 discusses reinsurance optimization model under sharpe's ratio and the conditions applicable, it derives more general model.
至于回报和风险，以及夏普比率，是不可能作出了正确的统计意义的手段和合理的判断。
As to returns and risks as well as Sharp Ratio, it is impossible to make correct and reasonable judgement by means of statistic significance.
我们发现，在我们研究的这两年内，交易员的夏普比率大幅提高。这表明他们在不断学习如何提高单位风险的盈利。
We found traders increased their Sharpe ratios significantly during the two years of the study -indicating they were learning to make more money per unit of risk.
参照一篮子期权的几何平均B-S期权定价模型，给出了基于实物期权的多项土地资源储备与开发的算术平均收益的夏普比率优化目标函数。
The objective Sharpe ratio function of land development arithmetic average value portfolio is deduced based on the geometric average B-S model of the basket options in the paper.
更有用的一点是，我们的数据也表明，银行可以根据夏普比率随着时间推移而提高的程度，来判断一名交易员是否掌握了与薪酬相称的技能。
More usefully, the data also suggest that Banks could use an improving Sharpe ratio over time as a measure that indicates a trader has developed a skill worth paying for.
但是在月球上，这个比率变化范围很大——夏普称这个现象为“离散”- - -如果月球包含大量氢的话，这个事件是不可能发生的。
But on the moon, there's a wide variety in that ratio-what Sharp calls "scatter" -something that could not have happened if the moon contained significant amounts of hydrogen.
比率的变异是“完全没有预料到的，一开始就感到困惑”，夏普说。
The ratio variability was a "completely unexpected and initially quite bewildering" result, Sharp says.
夏普博士说如果月球岩石中氢的初始含量接近地面的岩石，氯同位素比例比率不会这么分散。
Dr Sharp said that if lunar rocks had initial hydrogen contents anywhere close to those of terrestrial rocks, the chlorine isotope ratios would not have so much scatter.
夏普博士说如果月球岩石中氢的初始含量接近地面的岩石，氯同位素比例比率不会这么分散。
Dr Sharp said that if lunar rocks had initial hydrogen contents anywhere close to those of terrestrial rocks, the chlorine isotope ratios would not have so much scatter.
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