scholarly journals Power and level robustness of a test for composite hypotheses under independent non-homogeneous data

2019 ◽  
Vol 148 ◽  
pp. 35-42
Author(s):  
Abhik Ghosh ◽  
Ayanendranath Basu
Keyword(s):  
Composite Hypotheses ◽  
Homogeneous Data

Rotational Characteristics of the Green Solar Corona: 1947-1991

1994 ◽  
Vol 144 ◽  
pp. 139-141 ◽  
Author(s):  
J. Rybák ◽  
V. Rušin ◽  
M. Rybanský
Keyword(s):  
Solar Corona ◽  
World Wide ◽  
Rotation Period ◽  
Original Data ◽  
Coronal Emission ◽  
Time Intervals ◽  
Data Set ◽  
The World ◽  
Coronal Emission Line ◽  
Homogeneous Data

AbstractFe XIV 530.3 nm coronal emission line observations have been used for the estimation of the green solar corona rotation. A homogeneous data set, created from measurements of the world-wide coronagraphic network, has been examined with a help of correlation analysis to reveal the averaged synodic rotation period as a function of latitude and time over the epoch from 1947 to 1991.The values of the synodic rotation period obtained for this epoch for the whole range of latitudes and a latitude band ±30° are 27.52±0.12 days and 26.95±0.21 days, resp. A differential rotation of green solar corona, with local period maxima around ±60° and minimum of the rotation period at the equator, was confirmed. No clear cyclic variation of the rotation has been found for examinated epoch but some monotonic trends for some time intervals are presented.A detailed investigation of the original data and their correlation functions has shown that an existence of sufficiently reliable tracers is not evident for the whole set of examinated data. This should be taken into account in future more precise estimations of the green corona rotation period.

Large Time Behavior of Solutions to One Nonlinear Integro-Differential Equation

2008 ◽  
Vol 15 (3) ◽  
pp. 531-539
Author(s):  
Temur Jangveladze ◽  
Zurab Kiguradze
Keyword(s):  
Magnetic Field ◽  
Differential Equation ◽  
Boundary Conditions ◽  
Large Time ◽  
Dirichlet Boundary ◽  
Large Time Behavior ◽  
Dirichlet Boundary Conditions ◽  
Time Behavior ◽  
Integro Differential Equation ◽  
Homogeneous Data

Abstract Large time behavior of solutions to the nonlinear integro-differential equation associated with the penetration of a magnetic field into a substance is studied. The rate of convergence is given, too. Dirichlet boundary conditions with homogeneous data are considered.

Performance of a sequential detector for multiple composite hypotheses

1989 ◽  
Vol 18 (1) ◽  
pp. 43-54 ◽  
Author(s):  
S Fleisher ◽  
E Shwedyk
Keyword(s):  
Composite Hypotheses

Statistical Uncertainty in Long-Term Distributions of Significant Wave Height

1996 ◽  
Vol 118 (4) ◽  
pp. 284-291 ◽  
Author(s):  
C. Guedes Soares ◽  
A. C. Henriques
Keyword(s):  
Probability Distribution ◽  
Wave Height ◽  
Significant Wave Height ◽  
Data Sets ◽  
Monthly Basis ◽  
Significant Wave ◽  
Fitting Procedure ◽  
The One ◽  
Homogeneous Data

This work examines some aspects involved in the estimation of the parameters of the probability distribution of significant wave height, in particular the homogeneity of the data sets and the statistical methods of fitting a distribution to data. More homogeneous data sets are organized by collecting the data on a monthly basis and by separating the simple sea states from the combined ones. A three-parameter Weibull distribution is fitted to the data. The parameters of the fitted distribution are estimated by the methods of maximum likelihood, of regression, and of the moments. The uncertainty involved in estimating the probability distribution with the three methods is compared with the one that results from using more homogeneous data sets, and it is concluded that the uncertainty involved in the fitting procedure can be more significant unless the method of moments is not considered.

scholarly journals INFORMALITY AS POLITENESS STRATEGIES IN REQUEST OF ENGLISH EDUCATION STUDY PROGRAM OF RIAU ISLANDS UNIVERSITY

2017 ◽  
Vol 3 (1) ◽  
Author(s):  
Suswanto Ismadi Megah
Keyword(s):  
English Education ◽  
Cluster Sampling ◽  
English Department ◽  
Study Program ◽  
Young Sister ◽  
Education Study ◽  
Politeness Strategies ◽  
The Subject ◽  
Negative Face ◽  
Homogeneous Data

This study was aimed to identify the informality of request as politeness strategies used by the students of English Education study Program (English department) of Unrika Batam.The data was obtained from request spoken by the student of English department students. The data taken based on cluster sampling due the homogeneous data. The data was students of morning class of semester seven. This study concluded that The usage of bu, ma, mah (means mother)  five data and yah, pak, and pa (means father or daddy), the speaker respects to the hearer’s face by addressing her as mom. This considered her position is upper position; this does not threaten her face. This is used informally to her mother in relaxed situation. The usage of imperative sentences are four data when the hearer asks her young sister  to take the glass, then the subject asks her big sister to buy her dress, when she asks her young sister to take chilly and when the subject ask the money to pay rental house. This sentences forces her face’s hearer. This shows negative face. The last is speaker states “adek” young sister to her father means to soften request to her father due to the father will usually fulfill the young child.

scholarly journals Peningkatan Kompetensi Keterampilan Peserta Didik Berbantuan LKPD Berbasis Model Discovery Learning pada Materi Fluida

2019 ◽  
Vol 2 (1) ◽  
pp. 130-139
Author(s):  
Nadya Pratiwi ◽  
Yulkifli Yulkifli
Keyword(s):  
Random Sampling ◽  
Sampling Technique ◽  
Learning Model ◽  
Discovery Learning ◽  
Average Value ◽  
Analysis Technique ◽  
Distribution Of Values ◽  
Skill Scores ◽  
Homogeneous Data ◽  
Cluster Random Sampling

Abstract: Lack of practical activities in schools can result in a decrease in the creativity of students. worksheets based on the discovery learning model in them trigger students to think creatively and critically. The sampling technique is cluster random sampling. The purpose of this study is to look at the improvement of skills competencies which are assisted by student worksheets based on the discovery learning model. The data analysis technique is testing hypotheses where there is a difference which means the use of this student worksheet. Hypothesis testing conditions are to carry out normality tests for skill scores from both sample classes and homogeneity tests to see the distribution of values from two sample classes that have homogeneous data. after treatment is obtained, the average value of the skills of the experimental class is 78.62 and for the control class is 70.10.Abstrak: Kurangnya kegiatan praktikum di sekolah dapat mengakibatkan penurunan kreativitas siswa. lembar kerja berbasis model discovery learning di dalamnya memicu siswa untuk berpikir kreatif dan kritis. Teknik pengambilan sampel adalah cluster random sampling. Tujuan dari penelitian ini adalah untuk melihat peningkatan kompetensi keterampilan yang dibantu oleh lembar kerja siswa berdasarkan pada model pembelajaran penemuan. Teknik analisis data menguji hipotesis di mana ada perbedaan yang berarti penggunaan lembar kerja siswa ini. syarat pengujian hipotesis adalah untuk melakukan tes normalitas untuk skor keterampilan dari kedua kelas sampel dan tes homogenitas untuk melihat distribusi nilai dari dua kelas sampel yang memiliki data homogen. setelah perawatan diperoleh, nilai rata-rata keterampilan dari kelas eksperimen adalah 78,62 dan untuk kelas kontrol adalah 70,10.

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