The MLR mathematical model that established with orthogonal signal correction plus first derivative and mean centre preprocessed spectra shows the best result for glucose and fructose.

研究结果表明，原始光谱经均值中心化、一阶微分和正交信号校正预处理后，运用多元线性回归法所建葡萄糖和果糖定量分析模型最优。

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Compared with the original two kinds of Phase-Difference Correction, only one sequence of time-domain signal is sampled and FFT analysis of same points is performed twice in this method.

与原两种相位差法相比，这种方法只采一段时域信号，且进行两次相同点数的FFT分析。

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After correction, the estimates of signal amplitude and frequency have high accuracy.

修正后的信号强度和频率估值有相当高的精度。

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When October 16 arrived, short-term MACD was on a sell signal indicating a correction was underway.

FORBES: Market Correction Started In September, Has Room To Get Worse

There is initial resistance at 8, 300, and a daily close above 8, 400 should signal that the correction is over.

FORBES: The Week Ahead: Can Energy Stocks Fuel The Next Market Rally?

The rally lost some steam on Friday, but a more convincing lower close is needed to signal that a correction is underway.

FORBES: The Week Ahead: Be a Smart Buyer