A watermarking scheme based on the discrete cosine transform (DCT) was studied. A new blind watermarking algorithm by embedding the watermark into the phase components of DCT was proposed.

基于离散余弦变换(DCT)方法对水印算法进行了研究，提出一种新的将水印嵌入到分块dct相位成分的盲水印算法。

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Aiming at the phase ambiguity of the blind channel estimation in frequency domain, a blind channel estimation method in frequency domain based on dissymmetrical modulation constellation was proposed.

针对频域信道盲估计的相位模糊问题，提出了基于非对称调制星座的频域信道盲估计方法。

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Studies on phase I clinical trials of artesunate tablet were carried out with double blind method in 22 male healthy volunteers.

以双盲法对22名健康男性志愿者进行青蒿琥酯片口服的耐受性和不良反应研究。

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Safety data for KYNAMRO are based on pooled results from four Phase 3, randomized, double-blind, placebo-controlled trials with a total of 390 patients of which 261 patients received weekly subcutaneous injections of 200 mg of KYNAMRO and 129 patients received placebo for a median treatment duration of 25 weeks.

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