查询词典 at the threshold of

Based on the above-mentioned parameter, according to the relationship between robust estimation and nonlinear diffusion, the Turkey loss function is introduced as the diffusion function in SAR image decomposition because of its better performance, and the contour of an image is extracted by the Turkey diffusion function with the proposed diffusion parameter mentioned above. The experiment results indicate that the Turkey loss function based diffusion process can strengthen the conspicuous contour. Additionally, a Raita\'s criterion-based method, solving the automatic diffusion threshold, is proposed to automatically set the threshold in diffusion decomposition.

针对基于梯度参数和局域方差系数的扩散在对SAR图像进行分解时存在的缺陷，提出了一种局域方差系数与窗口幅度均值积的扩散系数，该系数能够更有效地实现潜在目标区域和背景区域的区分；在此基础上，根据鲁棒估计与非线性扩散的联系，引入扩散效果更好的Turkey损失函数作为图像分解中的扩散函数，并结合局域方差系数与窗口幅度均值积的扩散参数来提取图像的轮廓，结果表明：基于Turkey损失函数的扩散过程对特征突出的边缘所起的&强化作用&更加明显；此外，针对扩散分解中的阈值确定问题，提出了一种基于拉依达准则的扩散阈值自动求解方法，实现了扩散阈值的自动求解。

A set of threshold measuring system was founded, and the threshold of some laser polarizers were measured.

建立了一套完整的阈值测量系统，对制备的偏振膜阈值进行了测量。

Objective: This study investigated olfactory function disorder in Canadian potential AD patients through measuring the detection threshold and recognition threshold, of the potential AD patients and the matched controls by Five Odorants Test; and evaluated whether the senile plaques, neurofibrillary tangles and neuropil threads , which were the typical pathological changes of AD, presented in the olfactory mucosa of potential AD patients.

老年性痴呆中有75%为阿尔茨海默病(Alzheimer's disease， AD)，AD 是一种神经细胞退行性疾病，原因不明，临床以进行性记忆丧失和后天获得的知识丧失，病程逐渐发展直至完全丧失生活能力为特征。其病因是多原性的。尽管AD 的描述已达90 年之久，但要在早期检出此病仍是一个难题，所以，改进其临床诊断程序、途径非常重要。当今广泛用于AD 诊断的诸多标准中均未明确提及嗅觉的改变，然而众多国外文献资料表明，几乎所有的AD 患者发病早期甚至在临床前期即表现嗅觉识别阈的改变，可见对此深入研究有助于AD 患者的早发现、早诊断。

And a control logic using wheel speed as primary threshold and acceleration as secondary threshold was designed.

选择以驱动轮相对滑转率和加速度为控制门限设计了控制逻辑。

According to the analysis of some theoretical models for predicting fatigue threshold of a cracked body, it is held that the tensile properties of structural steels and the stress ratio under recycle loading are main dominant factors of the fatigue threshold .

通过对各种疲劳门槛值的理论模型的分析，认为结构钢的拉伸性能指标和循环加载条件是裂纹体疲劳门槛值的决定因素。

If the Exposure fluctuates above the threshold, Collateral will be moved to reflect the Exposure less the threshold.

如果风险敞口扩大到起点金额之上的数额，担保金额将变动至风险敞口减去起点金额后的程度。

Results Of the observed 56 parameters of rats and mice 80.4%indicated that the threshold doses for prenatal HTO exposure ranged from 0.030 Gy to 0.092 Gy,and the other 19.6%showed the threshold doses from 0.093 to 0.300 Gy.

结果 以大鼠和小鼠为实验对象，观察的56项生物学指标中，氚的致畸阈值：80.4%的指标分布在0.030-0.092 Gy范围内，有少数指标(19.6%)分布在0.093-0.300 Gy范围内。

The selection of the threshold value is critical here for the threshold-crossing method.

作为一种阈交问题，有关阈值选取的研究是重要的。

The goal of this article is to find out the most suitable threshold value selection, then induce relative conclusion to the optimal threshold selection from simulation.

本文的主要目的是在对最适合门槛值的选取进行研究，并从模拟研究中归纳得到对於最适合门槛值选取的重要相关结论。

The first step of this method is to remove the noises of image edge using wavelet modulus maximum's performance in multi-scale and Lipschitz exponent relation,and then adopts dynamic threshold,that is,former scale modulus image's mean modulus is used as next scale's modulus image threshold.Finally,this arithmetic is tested in image databases of cars.

一种改进的小波模极大值不变矩算法，首先利用小波模极大值在多尺度上的表现与Lipschitz指数的关系去除图像边缘的噪声点，然后采用动态确定阈值的方法，利用前一个尺度下模图像的平均模值作为后一个尺度下模图像的阈值，最后将此算法应用于汽车图像库。

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。