中值

Multidirectional median—mean filter has the specific properties of simple realization structure, robust and efficient filtering performance etc..

其中多方向中值一均值滤波具有实现结构简单、稳健性好且滤波效果也好的特点。

The big advantage of the Jackknife is that they can be used to evaluate the statistical properties of a statistic that is related to the data in a complicated, nonanalytical way. Apart from estimation of standard deviation, Jackknife can be used to estimate mean, median and even to construct confidence intervals.

大折刀法的最大优点是它能在一个统计量与资料的关系很复杂或无解析的表达式时，可用它估计统计量的统计特性，除了能得到标准偏差外，还可用来估计平均值和中值，甚至构造置信区间。

About 48%(90/194) were below 29 years of age. Ninety-nine of 194 cases had either radiotherapy alone or supplementary treatment with radiotherapy following surgery. We analyzed multiple prognostic factors. The factors of importance included postoperative radiotherapy; female in glioblastoma multiforme; the primary tumor dose above 5000 rads and/or whole brain irradiation in malignant astrocytoma and glioblastoma multiforme; the primary tumor dose above 4500 rads in ependymoma, medulloblastoma and oligodendroglioma; and spinal axis irradiation above 2000 rads in ependymoma and medulloblastoma that produced a better prognosis than in other groups.

男与女之比例为2.7比1，年龄分布自1至81岁，平均年龄33.3±19.3岁，中值年龄为34岁，29岁以下占48%(90/194)，其中99例单独或手术后辅以放射腺治疗，分析同种脑瘤的预后因素，其中多形神经胶母细胞瘤有手术后放射线治疗或女性，多形神经胶母细胞瘤合并星细胞瘤原发肿瘤剂量5000雷得以上或曾全颅腔照射，神经管胚细胞瘤，间胶质母细胞瘤，及室管膜瘤原发肿瘤剂量4500雷得以上，室管膜瘤及神经管胚细胞瘤有脊轴照射2000雷得以上预后均佳，且统计上有显著的差异。

The performance of the method is saliently improved in eliminating the noise and preserving the edge of the image when the noise ratio is high.

对不同类型、受不同强度噪声污染图像的去噪实验表明，该方法在不同噪声率下均优于传统的中值滤波法及其一些改进算法，当噪声率较大时其去噪和保边性能得到了显著提高。

In this paper , we try to use wavelet transformation in combining with median filter to process image that contained Guass noise and specking noise at the same time .

尝试利用基于小波变换和中值滤波相结合图像去噪声处理对同时含有高斯噪声和椒盐噪声的图像去噪方法进行了探讨。

The presenting symptoms and signs were nasal obstruction, nasal bleeding, nasal discharge, fever, cheek and orbital, swelling, nasal mass and lymphoadenopathy. The time from onset of symptoms to diagnosis were 10 days to 14 years with a median of 6 months. The most common sites of involvement were nasal alae, hard palate and soft palate, maxilllary sinus and nasopharynx.

最多病徵为鼻塞、鼻出血和有分泌物、发烧、脸颊和眼眶部肿大等，自有症状至有诊断期间为10天至14年，中值为6个月，较多的病灶位置依次为鼻翼、硬软鍔、上頷竇、鼻咽部、咽壁、薛竇、蝶竇等。

Image is processed by using median filter and unsharp mask. The infrared image intensity surface is fitted by Haralickd discrete orthogonal polynomial basis function,and then the maximum points are detected on the fitted intensity surface by convolving the image with the second order directional derivative operators.

中文摘要：提出一种红外弱小多目标图像检测方法，图像先经过中值滤波、高提升滤波增强处理，再用基于Haralick离散正交多项式曲面拟合图像，拟合曲面的极大值点即目标点，可以利用导出的二阶方向导数算子与图像进行卷积得到。

The realization tactic of median filter, emendating incline, outline pick-up arithmetic is designed.

设计了图像中值滤波、倾斜校正、轮廓提取算法的实现策略。

The results show that the size distribution of suspended sediment is mainly influenced by three factors: sediment sources, resuspension of bottom sediment by tidal force, and flocculated settling of suspended sediment.

以实测悬沙粒径、流速、含沙量资料为基础，通过悬沙不同粒级组分、中值粒径以及粒度参数的统计，分析椒江河口最大浑浊带核部悬沙粒径分布变化特性。

Firstly, after getting predicted multiples, we use adaptive subtraction algorithm to eliminate multiples and get some inverse wavelets corresponding to every trace in one shot gather, then construct inverse wavelets domain by those inverse wavelets. Secondly, use median filtering method to get inverse wavelet estimation in inverse domain. Thirdly, correct the misshaped inverse wavelets in inverse domain by the inverse wavelet estimation.

其步骤为：首先用SRMA方法预测出表面多次波，并对每一单炮进行单道自适应相减，得到逆子波，形成逆子波域；其次，在逆子波域采用中值滤波，提取接近真实逆子波的逆子波估计；第三，在逆子波域用逆子波估计对畸变的逆子波进行校正；最后采用校正后的逆子波来衰减多次波。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。