Relevant bibliographies by topics / Skewness coefficient

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Skewness coefficient'

Author: Grafiati
Published: 3 June 2025
Last updated: 19 July 2025

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Journal articles on the topic "Skewness coefficient"

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Rayner, J. C. W., D. J. Best, and K. L. Mathews. "Interpreting the skewness coefficient." Communications in Statistics - Theory and Methods 24, no. 3 (1995): 593–600. http://dx.doi.org/10.1080/03610929508831509.

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Eltehiwy, Mahmoud A., and Abu-Bakr A. AbdulMotaal. "A New coefficient of Skewness for grouped data." Biometrics & Biostatistics International Journal 9, no. 2 (2020): 54–59. http://dx.doi.org/10.15406/bbij.2020.09.00300.

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The primary objective of this paper is to introduce a new measure for detecting skewness for grouped data, which is simpler than the current measures in its application. The new proposed coefficient of skewness based on the cumulative frequency data and hence uses more information from the tails of the distribution and thus will be more appropriate to detect asymmetry in the data. Another advantage of the new statistic is that it is bounded by -1 and +1; hence, the coefficients of skewness can be interpreted easily. Simulation study is employed to assess the performance of the proposed coeffic
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Tarikere, Kirankumar, and Akhil Dattatraya Joshi. "Relationship between Karl Pearson’s Coefficient of Skewness (Sk) and Ginni’s Coefficient of Concentration (G) under the purview of Digital Payments in India." Asian Journal of Probability and Statistics 23, no. 1 (2023): 28–45. http://dx.doi.org/10.9734/ajpas/2023/v23i1495.

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Aims: Statistics is one of the most important fields. It carries out observation, collection, analysis and interpretation of collected data with necessary techniques and tools for analysis. There are many parameters which help in analyzing the data. Amongst them, Karl Pearson’s Coefficient of Skewness and Ginni’ Coefficient of Concentration are very important. Karl Pearson’s Coefficient of Skewness plays an important role in measuring the symmetry. Symmetry and its measure help in knowing the manner of distribution carried out by the population. Karl Pearson’s Coefficient of Skewness is repres
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Liu, Zhifeng, Tingting Zhang, and Fenghua Wen. "Time-Varying Risk Attitude and Conditional Skewness." Abstract and Applied Analysis 2014 (2014): 1–11. http://dx.doi.org/10.1155/2014/174848.

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Much literature finds that the skewness in the return distribution is negatively correlated with the risk premium coefficient, and speculation is the reason for the skewness in the return distribution. As further research, this paper, first taking up the time-varying property of the risk premium coefficient, proposes a GARCH-M model with a time-varying coefficient of the risk premium for an empirical study of the correlation between the conditional skewness in the return distribution and the time-varying risk attitude. The empirical study indicates that the coefficient of the risk premium vari
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Doai, Mariko, Hisao Tonami, Munetaka Matoba, et al. "Pituitary macroadenoma: Accuracy of apparent diffusion coefficient magnetic resonance imaging in grading tumor aggressiveness." Neuroradiology Journal 32, no. 2 (2019): 86–91. http://dx.doi.org/10.1177/1971400919825696.

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Purpose The purpose of this study is to evaluate the accuracy of apparent diffusion coefficient magnetic resonance imaging in grading tumor aggressiveness using histogram apparent diffusion coefficient values. Materials and methods Eighteen patients with surgically proved pituitary macroadenomas were included in this study. Diffusion-weighted imaging with single-shot echo-planar sequence at 3-T with a 32-channel head coil was performed with b values of 0 and 1000 s/mm2. Calculated apparent diffusion coefficient maps were generated, and a 3-D volume of interest was placed on the tumor while sup
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Krasilnikov, A. I. "Analysis of Cumulant Coefficients of Two-Component Mixtures of Shifted Non-Gaussian Distributions." Èlektronnoe modelirovanie 43, no. 5 (2021): 73–92. http://dx.doi.org/10.15407/emodel.43.05.073.

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The dependence of the cumulant coefficients of two-component mixtures of shifted non- Gaussian distributions on the weight coefficient is analyzed and conditions are determined under which the cumulant coefficients of any orders are equal to zero. The dependence of the cumulant coefficients of two-component mixtures on the shear parameter is investigated and the parameter values are determined at which the cumulant coefficients of any orders have extrema and zeros. The dependence of the skewness and excess kurtosis of a two-component mixture of shifted Gumbel distributions of type 1 on the wei
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Bendel, R. B., S. S. Higgins, J. E. Teberg, and D. A. Pyke. "Comparison of skewness coefficient, coefficient of variation, and Gini coefficient as inequality measures within populations." Oecologia 78, no. 3 (1989): 394–400. http://dx.doi.org/10.1007/bf00379115.

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Chen, Bo, and Qing Shan Yang. "Effects of Geometrical Factors on Wind Pressure Characteristics of Cylindrical Roofs with Wind Tunnel Tests." Applied Mechanics and Materials 351-352 (August 2013): 284–89. http://dx.doi.org/10.4028/www.scientific.net/amm.351-352.284.

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With wind tunnel tests, simultaneous pressure measurements are made on 4 cylindrical roof models with different rise-span ratios and roof inclinations. Effects of these geometrical factors on wind pressure characteristics of the roofs are investigated, including mean pressure coefficients, RMS pressure coefficients, skewness, kurtosis, and probability distributions of wind pressure. Results show that the mean vertical wind force coefficient of high rise-span ratio roof is larger than that of the low rise-span ration roof; the mean pressure coefficient distribution of the low rise-span ratio ro
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Wen, Fenghua, and Xiaoguang Yang. "Skewness of return distribution and coefficient of risk premium." Journal of Systems Science and Complexity 22, no. 3 (2009): 360–71. http://dx.doi.org/10.1007/s11424-009-9170-x.

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Zhou, Jing Jia, Kok Haur Ng, Kooi Huat Ng, Shelton Peiris, and You Beng Koh. "Asymmetric Control Limits for Weighted-Variance Mean Control Chart with Different Scale Estimators under Weibull Distributed Process." Mathematics 10, no. 22 (2022): 4380. http://dx.doi.org/10.3390/math10224380.

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Shewhart charts are the most commonly utilised control charts for process monitoring in industries with the assumption that the underlying distribution of the quality characteristic is normal. However, this assumption may not always hold true in practice. In this paper, the weighted-variance mean charts are developed and their population standard deviation is estimated using the three subgroup scale estimators, namely the standard deviation, median absolute deviation and standard deviation of trimmed mean for monitoring Weibull distributed data with different coefficients of skewness. This stu
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Dissertations / Theses on the topic "Skewness coefficient"

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Sahmarany, Lola El. "Méthodes d'amélioration pour le diagnostic de câble par réflectométrie." Thesis, Clermont-Ferrand 2, 2013. http://www.theses.fr/2013CLF22421/document.

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L’utilisation de câbles électriques et leurs longueurs dans certains systèmes électriques ont fortement augmenté au cours des dernières années. Or, la fiabilité de ces systèmes repose en partie sur la fiabilité des réseaux électriques. On constate en pratique qu’une part non négligeable des pannes et des dysfonctionnements de ces systèmes proviennent des défauts dans les liaisons filaires et non des équipements électriques. La connaissance de ces réseaux filaires et en particulier la détection de leurs défauts est donc importante. De nombreuses méthodes ont été développées pour tester l’état d
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Kim, Jong Phil. "Efficient confidence interval methodologies for the noncentrality parameters of noncentral T-distributions." Diss., Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-04062007-124123/.

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Thesis (Ph. D.)--Industrial and Systems Engineering, Georgia Institute of Technology, 2007.<br>Lewis VanBrackle, Committee Member ; Brani Vidakovic, Committee Member ; Anthony J. Hayter, Committee Chair ; Nicholeta Serban, Committee Member ; Alexander Shapiro, Committee Member.
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Vier, Iliane Freitas de Souza. "Dinâmica de comunidade de espécies arbóreas em manchas de Mata Atlântica com matrizes de pecuária e silvicultura de eucalipto no extremo sul do Brasil." Universidade do Vale do Rio dos Sinos, 2013. http://www.repositorio.jesuita.org.br/handle/UNISINOS/4777.

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Submitted by William Justo Figueiro (williamjf) on 2015-08-28T17:15:44Z No. of bitstreams: 1 32e.pdf: 2782096 bytes, checksum: 5928fd17fc9df8b5902bae55c6c45acf (MD5)<br>Made available in DSpace on 2015-08-28T17:15:44Z (GMT). No. of bitstreams: 1 32e.pdf: 2782096 bytes, checksum: 5928fd17fc9df8b5902bae55c6c45acf (MD5) Previous issue date: 2013-08-27<br>CMPC - Celulose Riograndense<br>A vegetação do sul do Brasil é composta pelos biomas Pampa e Mata Atlântica. Nossas áreas de estudo situam-se próximo aos limites destes dois biomas, formando um mosaico campo-floresta. A pecuária e a silvicu
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Пятковська, І. О. "Особливості виділення газонасичених товщ у тонкошаруватих відкладах Передкарпатського прогину за даними геофізичних досліджень". Thesis, Івано-Франківський національний технічний університет нафти і газу, 2013. http://elar.nung.edu.ua/handle/123456789/4640.

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У дисертаційній роботі вирішуються актуальні питання підвищення достовірності виділення порід-колекторів та визначення їх характеру насичення у тонкошаруватих, піщано-глинистих, літолого-стратиграфічних комплексах газоконденсатних родовищ, північно-західної частини Більче-Волицької зони Передкарпатського прогину. На підставі результатів досліджень, проведених у дисертаційній роботі, встановлено чинники, які впливають на достовірність виділення продуктивних порід-колекторів та фізичну характеристику полів, що їх відображають. Саме ці чинники в подальшому призводять до похибок у визначенні петро
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Book chapters on the topic "Skewness coefficient"

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Yan, Zaizai, and Bing Tian. "Ratio Method to the Mean Estimation Using Coefficient of Skewness of Auxiliary Variable." In Communications in Computer and Information Science. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-16339-5_14.

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Vijithananda, Sahan M., Mohan L. Jayatilake, Bimali S. Weerakoon, et al. "Skewness and Kurtosis of Apparent Diffusion Coefficient in Human Brain Lesions to Distinguish Benign and Malignant Using MRI." In Communications in Computer and Information Science. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-9184-2_17.

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"Trask skewness coefficient." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_202479.

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"skewness moment coefficient." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_194024.

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"moment coefficient of skewness." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_132600.

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"skewness coefficient of Trask." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_194023.

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"quartile coefficient of skewness." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_170110.

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Deng, Jin, and Shutong Li. "Correlation Fitted of Loess Microscopic Parameter Statistics with Shear Strength C and φ." In Advances in Transdisciplinary Engineering. IOS Press, 2022. http://dx.doi.org/10.3233/atde220854.

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The microstructure of loess mainly reflects the size distribution, orientation, contact mode and pore distribution of particles. The six original loess (low clayey silt loess) on the same site in Lanzhou is selected by the direct shear test, high power electron microscope and energy spectrum test. To simulated calculation the cohesion (C) and internal friction angle (φ), used by the parameters data, including to the mineral element (Fe/Al/Si, Al/Si, K) ratio, microstructure parameters (Long axis of the particles, long axis’ skewness, kurtosis and orientation degree. The results indicated that the (φ) value was linearly correlated with the mean value of the Angle, and the correlation coefficient of the fitting formula was 0.82. The cohesion C value was linearly correlated with the kurtosis, Skewness, Fe/Si, Al/Si and K/Al of the long axis, and the maximum correlation coefficient after fitting was 0.99. The fitting formula of microcosmic parameters and shear strength can provide a new research method for predicting the shear strength of loess samples.
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Popescu, Delia Mioara, Ionica Oncioiu, Anca Gabriela Petrescu, and Marius Petrescu. "Designing the Future of Romanian Women Entrepreneurship." In Encyclopedia of Organizational Knowledge, Administration, and Technology. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-3473-1.ch100.

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This chapter seeks to offer new insights into the profile of women entrepreneurs in Romania. Moreover, it analyses the factors that may contribute to the creation of sustainable women-led businesses. The questionnaire used in the survey included 21 questions, divided into six sections, and responses collected using the questionnaires allowed the calculation of statistical indicators for this study, namely: the mean, median, mode, standard deviation/standard error, variance, the amplitude of the variance, the sum of all observations, the asymmetry coefficient Skewness, the vaulting coefficient Kurtosis and the calculation of quartiles. The research results reveal an accomplished female entrepreneur who possesses a strong sense of entrepreneurship and she is supported by her family in her entrepreneurship career.
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Podovšovnik, Eva, and Tilen Smajla. "Perceptions of Distance Learning Among Slovenian University Professors and Students." In Handbook of Research on Establishing Digital Competencies in the Pursuit of Online Learning. IGI Global, 2023. http://dx.doi.org/10.4018/978-1-6684-7010-7.ch017.

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Research into the perceptions of distance learning has gained considerable attention in the last two decades and has increased significantly due to the outburst of the COVID-19 pandemic. The research focused on the perceptions of distance learning among the university students and university professors in the Republic of Slovenia. The sample consisted of 992 students and 179 professors who have been contacted online to fill in an anonymous online questionnaire. Eighteen items have been drawn up and by applying statistical analyses such as a T-test for independent samples, distribution of frequencies, determination of skewness and kurtosis coefficients, and the Spearman's rho coefficient, and the following results have been obtained: 15 items were put to a T-test which has come up with statistically significant differences in perceptions between university students and professors with regard to three items.
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Conference papers on the topic "Skewness coefficient"

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Wen, Fenghua, Jinli Xiao, Zhifeng Liu, Zhifeng Dai, and Xiaoguang Yang. "The Time-varying Risk Premium Coefficient and the Conditional Skewness." In 2012 Fifth International Conference on Business Intelligence and Financial Engineering (BIFE). IEEE, 2012. http://dx.doi.org/10.1109/bife.2012.55.

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Li, Zhifang, Hui Li, Shulian Wu, and Shusen Xie. "Correlation between the skewness and the scattering coefficient of intralipid solution." In Photonics and Optoelectronics Meetings, edited by Qingming Luo, Lihong V. Wang, and Valery V. Tuchin. SPIE, 2008. http://dx.doi.org/10.1117/12.820909.

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Ito, Takahiro, Ayumu Matsumoto, Toshihisa Ito, et al. "Experimental Investigation on Effects of Surface Roughness Geometry Affecting to Flow Resistance." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-25014.

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Experimental investigation on effects of surface roughness geometry affecting to flow resistance has been carried out. The concentric cylinder device composed of outer cylinder and inner test cylinder was employed to the experiment. We prepared 24 different roughness models having various skewness of roughness profile as test inner cylinders. Surface of test cylinder has ridge and valley roughness whose shapes are isosceles right triangle V-shape. These ridge and valley are arranged at equal intervals. Therefore, RMS roughness of the surface and skewness of the surface roughness profile can be
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Titov, A., and R. Dubrovsky. "Effect of Surface Profile Structure on Stability of Friction and Wear." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-59101.

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This paper describes the role of surface texture parameters of bodies in contact on friction coefficient and wear rate. Experiments are done on wear friction testing machine that allows dynamically tracking friction coefficient and wear rate of surfaces in contact under heavy-duty boundary lubrication conditions. Experiments based on conforming steel 4340 -bronze SAE 40 friction couple showed the role of profile characteristics of bodies in contact such as skewness and bearing length ratio. Experimental results demonstrated that for surfaces with similar roughness, waviness and profile paramet
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Podgornik, B., and M. Sedlacˇek. "Surface Texturing Effect, Characterization and Optimization for Boundary and Mixed Lubrication." In ASME/STLE 2011 International Joint Tribology Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ijtc2011-61184.

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Under boundary and mixed lubrication surface roughness and topography have significant influence on the tribological behaviour of contact surfaces, where even a small change in surface topography can lead to a considerable change in tribological behaviour. In recent years an effort for better controlling friction and wear has been focused also on the surface topography modification, especially on surface texturing. The aim of the present research work was to investigate the possibility of using roughness parameters kurtosis and skewness as design parameters for optimizing texturing pattern in
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Abdullayev, P. S., A. M. Pashayev, R. A. Sadiqov, and A. J. Mirzoyev. "Fuzzy Condition Monitoring System for Aviation Gas Turbine Engines." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-43902.

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In this paper is shown the efficiency of the new Soft Computing technology application at different diagnosing stages of aviation gas turbine engine (GTE) technical condition with using Fuzzy Logic and Neural Networks methods, when the flight information has property of a fuzzy, limitation and uncertainty. On the fuzzy statistical data basis and with high accuracy is made the training of Fuzzy Multiple Linear and Non-Linear models (Fuzzy Regression Equations). Thus for GTE technical condition more adequate model making are analysed dynamics of skewness and kurtosis coefficients’ changes. Resea
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Abdullayev, P. S. "Fuzzy Statistics Approach for Aviation GTE Condition Estimation Technique." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95791.

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In this paper is shown that the probability-statistic methods application, especially at the early stage of the aviation gas turbine engine (GTE) technical condition diagnosing, when the flight information has property of the fuzzy, limitation and uncertainty is unfounded. Hence is considered the efficiency of application of new technology Soft Computing at these diagnosing stages with the using of the Fuzzy Logic and Neural Networks methods. Training with high accuracy of fuzzy multiple linear and non-linear models (fuzzy regression equations) which received on the statistical fuzzy data basi
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Mészáros, Jakub, Pavol Miklánek, and Pavla Pekárová. "ESTIMATION OF THE T-YEAR SPECIFIC DISCHARGE USING THE REGIONALISED SKEWNESS COEFFICIENT OF THE LOG-PEARSON TYPE III DISTRIBUTION." In XXVII Conference of the Danubian Countries on Hydrological Forecasting and Hydrological Bases of Water Management. Nika-Tsentr, 2020. http://dx.doi.org/10.15407/uhmi.conference.01.09.

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In this paper the results are presented of estimation of T-year specific discharge of several streams in two regions in Slovakia. The Qmax time series used in the study were observed at water gauges from lowland Slovak part of the Morava River basin, and from the mountainous Belá River basin. For estimating the design values, we have studied the use of only one type of probability distribution, namely the Log-Pearson Type III Distribution (LP3 distribution). The use of only one type of distribution brings several benefits, e.g. possibility of the regionalization of the distribution parameters
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Tayebi, Noureddine, and Andreas A. Polycarpou. "Modeling the Effect of Surface Roughness on the Adhesion, Contact and Friction in Micro-Electro-Mechanical Systems (MEMS) Interfaces." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41301.

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It has been experimentally shown that surface texturing (roughening) decreases the effect of intermolecular adhesion forces that are significant in MEMS applications. These forces can hinder normal operation of sensors and actuators as well as micro-engines where they might increase friction, which could be catastrophic. In this paper, a model that predicts the effects of roughness, asymmetry, and flatness on the adhesion, contact, and friction forces in MEMS interfaces is presented. The three key parameters used to characterize the roughness the asymmetry and the flatness of a surface topogra
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Bons, Jeffrey P., Rory Blunt, and Steven Whitaker. "A Comparison of Techniques for Particle Rebound Measurement in Gas Turbine Applications." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-43766.

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The rebound characteristics of 100–500μm quartz particles from an aluminum surface were imaged using the particle shadow velocimetry (PSV) technique. Particle trajectory data were acquired over a range of impact velocity (30–90 m/s) and impact angle (20°–90°) typical for gas turbine applications. The data were then analyzed to obtain coefficients of restitution (CoR) using four different techniques: (1) individual particle rebound velocity divided by the same particle’s inbound velocity (2) individual particle rebound velocity divided by inbound velocity taken from the mean of the inbound dist
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Reports on the topic "Skewness coefficient"

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Kott, Phillip S. Better Coverage Intervals for Estimators from a Complex Sample Survey. RTI Press, 2020. http://dx.doi.org/10.3768/rtipress.2020.mr.0041.2002.

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Coverage intervals for a parameter estimate computed using complex survey data are often constructed by assuming the parameter estimate has an asymptotically normal distribution and the measure of the estimator’s variance is roughly chi-squared. The size of the sample and the nature of the parameter being estimated render this conventional “Wald” methodology dubious in many applications. I developed a revised method of coverage-interval construction that “speeds up the asymptotics” by incorporating an estimated measure of skewness. I discuss how skewness-adjusted intervals can be computed for
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