查询词典 modulation

Third, it has a discussion on the development of modern and traditional artificial neural network technology and their application in image processing. It summaries that the model of the Pulse-coupled neural network based on Elkhorn's model of the cat visual cortex was constructed according to the mammalian vision systems. The nonlinear modulation property, which is a generic and pervasive biological pulse-coupling mechanism, is used in the construction of PCNN. So, PCNN finds many applications in image processing, including segmentation, edge extraction et al. As all known, the performance of the image segmentation depends not only directly on the adjustment of PCNN parameters and the statistical properties of image but also on the cyclic iteration times N of PCNN. If the parameters have been properly set, it turns out to be essential to select a suitable criterion to determine N.

回顾了神经网络技术的现状，指出传统人工神经网络只利用了生物神经元有限的属性进行模型构建，而90年代产生的脉冲耦合神经网络充分利用了哺乳动物视神经网络特有属性，其神经元模型除了考虑生物神经元特有的线性相加、兴奋与抑制属性外，还考虑到生物神经元特有的非线性相乘调制耦合特性；考虑了哺乳动物视神经系统视野受到适当刺激时，相邻连接神经元同步激发产生35Hz～70Hz振荡脉冲串特性等，所以PCNN网络模型更靠近真实生物视觉特性，特别是哺乳动物视神经网络，特别适合计算机图像处理应用，尤其在生物细胞图像分割、图像平滑、降噪及图像中目标的分类、计数等方面的研究。

The W20NK50Z is a miniature transmitter module that generates on-off keyed modulation from an exter- nal digital encoder.

该W20NK50Z是一个微型发射器模块生成的开关键控从外部的数字编码器调制。

The SN74HC574N is a miniature transmitter module that generates on-off keyed modulation from an exter- nal digital encoder.

该SN74HC574N是一个微型发射器模块生成的开关键控从外部的数字编码器调制。

The AD8061AR is a miniature transmitter module that generates on-off keyed modulation from an exter- nal digital encoder.

该AD8061AR是一个微型发射器模块生成的开关键控从外部的数字编码器调制。

Compared with acute-phase reaction and erythrocytic immune function, neutrophilic counts, interleukin-6, natural killer cells, C-reaction protein between gasless hand-assisted laparoscopic surgery and carbon dioxide pneumoperitoneum laparoscopic surgery, we found there were obvious difference on N/L rate, CRP, IL-6, Which provided evidence for evaluate the gasless hand-assisted laparoscopic technique superiority to the traditional surgery, and treatment for clinical immune modulation.

通过非气腹手助腹腔镜、CO2气腹腹腔镜和开腹手术创伤后出现的急性期反应和红细胞免疫功能的检测，中性粒细胞计数、IL-6，NK，CRP浓度等APR指标检测，发现非气腹手助腹腔镜结直肠癌手术术后中性粒细胞／淋巴细胞、CRP、IL-6等免疫指标的变化情况较腹腔镜组、开腹组有明显区别，为评价此手术技术是否较传统方法优越和临床免疫调节治疗提供依据。

Because the powerline is a complicated medium, selecting appropriate modulation means is a pivotal question in order to guara- ntee the quality of signals.

因为电力线是一种复杂的通信媒体，要保证通信质量，选择合适的调制方式是一个关键问题。

The intensity modulation method is the oldest and simplest method for fiber-optic sensor, in which a homochromatic laser is used as system light source.

强度法是干涉型传感器采用的最古老、最简单的方法，它采用单色激光光源作为系统的光源。

Fiber optic sensor ; phase modulation ; demodulator ; passive homodyne method ; Labview

光纤传感器；相位调制；解调；无源零差法； Labview

Dynorphin may act as a pronociceptive, not an antinociceptive, factor in the modulation of the spinal hyperalgesic state.

在脊髓痛过敏状态的调制中，强啡肽是作为一种致痛因子而不是抗痛因子起作用。

OT is involved in the modulation of the transmision of nociceptive information in the spinal cord of rats with sciatic nerve ligation Intrathecal administration of OT induced a significant analgesic effect during 1 to 10 day after sciatic nerve ligation and a significant hyperalgesic effect from 11 day after sciatic nerve ligation .

催产素参与神经损伤痛敏大鼠脊髓水平痛觉信息传递的调节在坐骨神经损伤性痛大鼠鞘内注射催产素对痛觉的影响呈现先镇痛后痛敏二相性，转折点是结扎后第11天。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。