晨星分析员格列格.布朗（Greg Brown）说，这样做可以降低学费账单来临前，股市波动导致的资金风险。
That helps lower the risk of heavy losses right before the tuition bills roll in, says Morningstar analyst Greg Brown.
这些是用非对称的波动性，相互关联和在虚拟实验室其他部分相似的方法估算出来的(计量经济学详细资料见布朗利和恩格尔2010)。
These are estimated using asymmetric volatility, correlation and copula methods similar to those in other sections of VLAB (for econometric details see Brownlees and Engle 2010).
通过引入用于预测普通商品价格的较成熟的几何布朗运动模型建立了燃煤市场的煤价波动模型。
By means of introducing ripe geometrical Brown movement model for common commodity price forecasting a coal price fluctuation model of coal market is established.
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