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医药科学 包埋 Establish siRNA with survivin as target gene and plasmid as carrier, whichis imbed by lipidosome and transinfected with laryngeal carcinoma so as to observe thegrowth of cells and the survivin expression and the apoptosis. 建立以survivin基因为目的基因，质粒为载体的siRNA，脂质体包埋，转染喉癌Hep-2细胞，观察转染后细胞的生长情况、survivin的表达和细胞凋亡。
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At first, it quantizes the image coefficient vector gotten from DWT with the lattice vector quantization technology, then imbeds the watermark signal into the coefficient. 该算法先通过格矢量量化技术对经d WT变换后的宿主图像的系数矢量进行格矢量量化，然后将水印信号嵌入到量化后的系数中。 - 2
This method USES a threshold t to choose the blocks of halftone image to imbed information, which imbeds data as many as possible under the guarantee of the quality of the halftone image. 该方法利用了阈值t来控制水印的嵌入位置，在保证图像质量的前提下，嵌入尽可能多的数据。 - 3
This paper presents a communication model used to describe the watermark system, which imbeds the watermark through modifying the statistical parameters, and blind extraction is carried out. 针对这个难点，本文使用带有边信息的通信模型对水印系统进行描述，通过对该模型中的统计域参数进行修改来嵌入水印，并实现了水印的盲提取。
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