查询词典 difference threshold

An absolute value of difference of both phase angles is within a fixed threshold value.

这两个相位角的相位差的绝对值在一个固定的阈值内。

Near your audibility threshold, you can't tell the difference for sure anymore.

近您听音门槛，你不能分辨肯定了。

Firstly, according to this character, primacy central point is detected by the exploring extremum method in the windows of 3×3 pixels. Then, basing on this central point, approximate normal line at ±45°、0°and 90°angle are drew.if the minimums of normal line is at central point and the difference between the minimums and the maximum in the normal line is more than the threshold, this point is considered to the edge point of image.

首先，在3×3象素的窗口中，如果中心值为最小值，则以该点为基础，以±45°、0°和90°方向作为近似法线带，然后判断该法线上的象素最小值是否在切点上（即是否在法线的中心点上），再通过检验切点与轮廓法线上亮度极大值的差值是否超过阈值，来判断切点是否为边缘轮廓上的点。

The scores of following dimensions increased obviously in ADHD group; activity level, rhythmicity, adaptability, response strength, frame of mind, endurance, shifting of attention, reaction threshold. 38 ADHD children taking cognitive behavior unified training had decreasing scores in the following four dimensions: activity level, rhythm city, adaptability, endurance. Significant difference was observed before and after treatment in numeric cross-out examination.

结果 ADHD组儿童的气质类型和常模组比较有显著差异，ADHD组儿童的气质维度明显增高的因子有活动水平、节律性、适应性、反应强度、心境、持久性、注意转移、反应阈。38例进行认知行为综合训练的ADHD患儿，治疗后活动水平、节律性、适应性、持久性四个气质维度的得分明显下降，数字划销测验治疗前后有显著差异。

Phenological observation data of plant communities from 1982 to 1996 at 5 sites and a method for phenological cumulative frequency modeling were used to determine the beginning dates of local phenological seasons and their corresponding threshold values of normalized difference vegetation index in each year.

利用1982～1996年5个站点的植物群落物候观测数据和物候累积频率拟合法，划分各站逐年的植被物候季节，并确定各季节初日对应的当地归一化差值植被指数阈值。

The difference in eigenspace between any two images was calculated to yield a measurement to which a threshold was applied to make a .match / no match.

任意两个图像在特征空间的区别可以经过计算来开始用于产生一个是否匹配的决策。

According to the difference of Doppler spectra of meteor trail echo and clutter of ground and sea, a FIR high-pass filter is designed to filter out clutter and so the meteor trail echo becomes obvious. Then a smart threshold is obtained from the minimum mean of different segments of background noise and used to detect the meteor trail echo. Finally the phase discontinuity of clutter from the meteor trail echo suppression is eliminated by substituting the data at echo positions with clatter.

该文根据地海杂波与流星干扰在多普勒谱上的差别，提出了用FIR型高通滤波器滤除杂波使流星干扰凸显出来；再根据流星干扰的分布特点分段计算背景噪声均值，求取流星干扰检测门限；最后用杂波信号来插值流星干扰位置上的数据，消除因去除干扰造成的杂波相位不连续。

Firstly,the minimum interclass variance method was improved to obtain the optimal segmentation threshold of difference image quickly,and then,the region growing method was used to segment the target.

首先对最小类内方差法进行改进，快速确定差分图像的最佳分割阈值，再用区域生长法分割得到目标。

Namely, the first, the beginning, end and length of growing season of every type of vegetation is estimated with threshold method and moving average method, and the beginning end and length of growing season of vegetation from 1982 to 1999 is fitted linearly, finally, linear trend of the beginning end and length of growing season of vegetation is analyzed. The second, phenological phase in different years and zones is estimated based on greatest changes of slope method and EOF analysis method, and the result monitored by the two methods is compared, as a result, trend of growing season change from 1982 to 1999 in different latitude zones is better acquired. The third, phenological phase of vegetation in different spatial location from 1982 to 1999 is fitted based on curve. Then, spatial difference rules of growing season of every year and average of multi-year is discussed in article. In the end, lag correlation and linear regress are used to study relation between phenological phase of different types of vegetation, different latitude zones, different spatial places and climate changes.

利用阈值法和滑动平均法逐年估测了每种植被类型的生长季的开始、结束日期及长度；对18年中植被生长季的开始、结束时间和长度进行一次线性拟合，分析了植被生长季的开始、结束日期和长度的线性变化趋势；基于最大变化斜率法和EOF分析法估计了不同年份、不同区域内植被生长季的开始、结束时间及其长度，并对这两种方法的监测结果作了比较，从而得到了较好的不同纬度区域1982～1999年植被生长季的变化趋势；基于曲线拟合了1982～1999年的不同空间位置的植被物候期，然后讨论了每年和多年平均的植被生长季的空间分异规律；最后利用时滞相关分析和线性回归研究了不同类型植被的物候期与气候变化的相互关系，不同纬度带的植被物候期与气候变化的相互关系，植被物候期与气候变化空间相互关系。

So in this paper we discuss the content of version management from data storage, and put forward two models of difference storage. Constructing storage threshold unites difference storage and full storage in order to balance space efficiency and time efficiency. It not only improves the answer time of version access but also reduces storage space.

因此本文从数据存储的角度讨论了版本管理的内容，提出两种差值存储模型，构造了版本存储阈值来将差值存储与完整存储相结合，从而有效地在空间效率和时间效率上进行平衡，不仅提高了版本存取的响应时间又减少存储空间。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。