查询词典 host

To increase the security of the watermark, a new binary image encryption algorithm based on TD-ERCS map is presented. The watermark is encrypted by a chaos sequence generated by TD-ERCS map; A novel color image watermarking algorithm is proposed based on discrete chaotic map and 2-dimensions discrete wavelet transform. The watermark is encrypted by the new binary image encryption algorithm, and the encrypted watermark is embed into four sub-bands of the most deep level of blue branch of host image by three-level wavelet transform, and the embedded positions are determined by general cat cha otic map; A novel color-image blind detection watermarking algorithm is proposed based on integer wavelet transform and subsampling. The scrambled watermark is encrypted and embed into the low sub-bands after four sub-images of the Y branch of host image is transformed by two-level wavelet transform, and the embedded positions are determined by Logistic chaotic map, this watermarking scheme can realize blind extraction.

为了提高水印图像的安全性，提出了一种基于TD-ERCS混沌映射的二值水印图像的加密算法，该算法利用TD-ERCS映射产生的混沌序列加密水印图像；将离散混沌映射和二维离散小波变换相结合，研究了彩色图像水印新算法，该算法先对混沌序列加密后的水印图像进行小波变换，再嵌入到宿主图像的蓝色分量的最深层的四个子带中，嵌入位置则由广义猫映射确定；将整数小波变换和图像子采样技术应用于数字水印，提出了一种彩色图像盲提取水印算法，水印嵌入时，先对宿主图像在YIQ色彩空间中的Y分量进行子采样，并对得到的四个子图像分别进行二级离散小波变换，然后将置乱并加密后的水印图像嵌入到小波变换后的低频子带中，其嵌入位置由Logistic混沌映射产生的混沌序列确定，实现了水印的盲提取。

The SINEs RNA were transcripted by polymerase III; the transcripts can be reversely transcribed and the DNA products inserted into the host genome. The insertion of a SINE can be asseumed to be unidirectional since there is no known mechanism to precisely remove SINEs after their fixation of the host genome.

SINEs插入基因组后，很难在其相同位点精确的去除，能相对稳定地遗传；因此为系统进化分析提供了良好的分子标记，并被认为在物种50Mys的进化事件上能提供比较可信的进化信息，尤其是在科属以下的物种中。

Your host has expired, you can visit the virtual host management center for renewals.

您的主机已过期，您可以登录虚拟主机管理中心进行续费。

Only when twenty or more puppeteers ride a single host—a rare occurrence—is there direct risk to the host's health.

只有当20只以上的傀儡虫都攀附于同一宿主——这是非常罕见的情况——时才有可能直接威胁到宿主的健康状况。

At that time, were the host and display access to power and plug in different standards, thus causing the host and displays the difference between zero potential, so graphics port initialization fails, the display in order to burn.

当时主机和显示器是分别接入电源的，而且插头标准不同，这样就造成了主机和显示器零点电位的差异，于是显卡初始化端口失败，从而烧坏了显示器。

Second,we set the database of morphological characteristics of intercepted and captured bark beetle during quarantine,and the last,we studied the molecular identification of 15 species.The results were showed as below.1.Application of bark beetle semiochemicals in timber quarantine1.1 EAG and walking responses of bark beetle to different semiochemicalsSemiochemicals which can induce the olfactory response and aggregation behavior of bark beetle include host volatile components,pheromones secreted by bark beetles itself or synthesized with host compounds by bark beetles,and the compounds released by tissue of decaying wood under the pressure of microorganism after bark beetle colonization.

信息化合物在小蠹虫检疫中的应用1.1小蠹虫对各种信息化合物的触角电位及嗅觉反应能诱发小蠹虫产生嗅觉反应，进而使之产生聚集行为的信息化合物有很多种，主要包括：树木的挥发性组分；小蠹虫自身产生的信息素和寄生后转化寄主化学物质合成的信息素统称虫体信息素以及树木被小蠹虫寄生后，其组织在微生物作用下释放的物质。

It has also been described that the different interaction between host and the anions and the effect of electron – withdrawing group substitution on host-guest interaction from geometry features, frequency analyses, NBO analyses and frontier orbital of interaction.

本文还从几何构型、振动光谱、NBO分析及前线轨道等方面来阐述β-三氰基乙烯取代杯[4]吡咯与不同阴离子氢键相互作用的本质以及吸电子取代基的引入对杯[4]吡咯与F-和Cl-之间主-客体相互作用的影响。

Turning the dish drives to usually adopt the machine method,because the machine drives of spreading and moving the chain is long,spreading to move the parts many,spread to move the device complicated,on the some special artesian well equipments,will often appear whole machine set arrange the difficult circumstance,and host weight over big,affect the host moves to carry function.

0前言转盘是钻机或修井机旋转系统的主要部件，把发动机的旋转运动通过减速机构变为垂直旋转运动。转盘驱动通常采用机械方式，由于机械驱动的传动链长，传动部件多，传动装置复杂，在一些特殊的钻井设备上，常会出现整机台面布置困难的情况，且主机重量过大，影响主机的移动性能。

If young students want to broaden their vision of the world, it is advisable to send them abroad in groups for short-termed home stay programs . They can live with a host family, attend a summer school, and join in excursions around the host city.

如果想要让孩子到国外去见见世面，可以让他们集体参加短期的国外游学项目，住在外国人的家里，参加暑期班的学习，在所在地开展一些旅游活动。

Furthermore, based on the data of larval survival being influenced by host size, the adaptation of host size discrimination by the seed beetle was explored.

文中进一步根据寄主大小对幼虫存活影响的资料，探讨四纹豆象对寄主大小辨识之适应意义。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷