搜索结果: 1-15 共查到“p median”相关记录25条 . 查询时间(0.125 秒)
A single-station spectral model of the monthly median foF2 over Chongqing, China
solar cycle variation single station model geomagnetic index monthly median foF2
2015/9/1
Hourly values of the critical frequency of the ionospheric F region, foF2, obtained at Chongqing ionospheric observatory (geographic 29.50N, 106.40E), China, during the interval of 1977 to 1997 (solar...
LEAST MEDIAN OF SQUARES MATCHING FOR AUTOMATED DETECTION OF SURFACE DEFORMATIONS
surface matching robust estimator least median of squares estimator local deformation
2014/12/31
Detecting the difference between two surfaces without the aid of control points is desirable for many industrial applications. We tackle this problem by means of robust surface matching. In presence o...
Simple, asymptotically distribution-free, optimal tests for circular reflective symmetry about a known median direction
Circular statistics Fisher information singularity Rayleigh test for uniformity skewed distributions tests for symmetry
2013/3/26
In this paper, we propose optimal tests for circular reflective symmetry about a fixed median direction. The distributions against which optimality is achieved are the so-called k-sine-skewed distribu...
The Prevalence of Median Rhomboid Glossitis in Diabetic Patients:A Case-Control Study
Diabetes mellitus Median rhomboid glossitis Iran
2011/9/23
Background: Diabetes mellitus (DM) is one of the most common disorders of endocrine glands which has a worldwide distribution and is a risk factor for oral pathology so; the purpose of the present stu...
Chi-square versus median statistics in SNIa data analysis
Chi-square versus median statistics SNI data analysis
2011/7/20
In this paper we compare the performances of the chi-square and median likelihood analysis in the determination of cosmological constraints using type Ia supernovae data. We perform a statistical anal...
Median Algorithm for Sector Spectra Calculation from Images Registered by the Spectral Airglow Temperature Imager
Spectral Airglow Temperature imager sector temperature sector spectre median filter
2011/7/11
Abstract: The Spectral Airglow Temperature Imager is an instrument, specially designed for investigation of the wave processes in the Mesosphere-Lower Thermosphere. In order to determine the kinematic...
Estimating the population mean using stratified median ranked set sampling
Simple random sampling ranked set sampling
2010/12/30
In this paper, stratified median ranked set sampling (SMRSS) method is suggested for estimating the population mean. The SMRSS is compared with simple random sampling (SRS), stratified simple random s...
Median dichotomization in CFA: Is that allowed?
Median dichotomization conservative decisions non conservative decisions Configural Frequency Analysis (CFA)
2010/1/4
CFA was introduced as a procedure for detecting types in nominal scale data. In order to make it possible to apply the procedure also for data at least on ordinal scale level, it was proposed to discr...
Fast and Effective Interpolation Using Median Filter
Image interpolation median filter image zooming
2009/12/16
This paper proposes a fast and effective image interpolation algorithm using median filter. The interpolation algorithm is composed of two steps. First, a non-linear iterative procedure is utilized to...
Manufacturing sound absorber based on combined recycling of polyethylene trephetalat and polystyrene at low and median frequencies
plastic recycling polyetylen trephetalat (PET) polyetylen (PE) combined recycling low frequency sound absorber
2009/12/15
Background and aim: Noise pollution is one of the main cause of occupational hearing loss. According to WHO reports in many countries workers have been exposed to 85 - 90 dB noise level. The purpose o...
Comparison of Quadratic- and Median-Based Roughness Penalties for Penalized-Likelihood Sinogram Restoration in Computed Tomography
Penalized-Likelihood Sinogram Restoration Computed Tomography
2009/9/8
We have compared the performance of two different penalty choices for a penalized-likelihood sinogram-restoration strategy we have been developing. One is a quadratic penalty we have employed previous...
K-median问题贪心近似算法的分析与实验
K-median问题 贪心算法 近似算法
2009/8/6
讨论K-median问题的贪心近似算法及其在实际计算中的表现。提出一个解K-median问题的贪心算法，证明该算法的近似度为O(ln(n/k))，通过实验证明该贪心算法在实际应用当中可以取得较好的效果，大约有90%的客户能被距离其最近、次近和第三近的设备服务。
近似k-median分类属性数据聚类
数据挖掘 近似k-median聚类
2009/2/23
数据挖掘中解决分类属性数据聚类的算法有很多种，但大多数基于划分的方法得到的聚类中心一般不是数据集中的实际数据对象，缺乏实际的物理意义，有时会导致某一聚类为空。该文研究了近似k-median的求解算法，用数据的近似中值来代替模式进行聚类，提出了分类属性数据的近似k-median聚类算法，克服了一般基于划分的可分类属性数据聚类中所遇到的问题，仿真实验证明该算法有效
A postretention study of patients presenting with a maxillary median diastema
Diastema Stability Abnormal frenum
2009/1/9
The purpose of this study was to assess postretention stability of maxillary midline diastema closure, to search for predictors of relapse, and to test for associations between relapse and other pos...
Relapse after orthodontic correction of maxillary median diastema：A follow-up evaluation of consecutive cases
Diastema Maxillary median diastema Dental spacing Space reopening Relapse
2009/1/7
An evaluation of 96 treated orthodontic patients with maxillary median diastema ranging from 0.50 mm to 5.62 mm (mean 1.22, SD 0.85) was performed 4.0 to 9.0 years after completion of active treatme...