نتایج جستجو برای: sample using cochran
تعداد نتایج: 3627630 فیلتر نتایج به سال:
In the treatment of superficial lesions with 8-13 MeV electrons, lead shields are often used to protect the underlying tissue. Measurements were made with film and ion chamber to analyse various aspects of external and internal shielding in electron beam therapy. Data were obtained on the thickness of lead required for shielding, the effect of blocking on dose-rate, electron-backscattering from...
S Three new test statistics are introduced for correlated categorical data in strati ed R C tables. They are similar in form to the standard generalized Cochran-Mantel-Haenszel statistics but modi ed to handle correlated outcomes. Two of these statistics are asymptotically valid in both many-strata (sparse data) and large-strata limiting models. The third one is designed speci cally for the man...
Dendropsophus branneri is a small treefrog largely distributed throughout the Tropical Atlantic and Caatinga morphoclimatic domains (see Ab'Sáber 1977 for morphoclimatic domains), from northeastern to southeastern Brazil [Lutz 1973, Frost 2014; see Zina et al. 2014 for taxonomic comments on D. minusculus (Rivero, 1971) and D. branneri]. This species is currently placed in the D. microcephalus s...
1053-5888/09/$25.00©2009IEEE IEEE SIGNAL PROCESSING MAGAZINE [53] JANUARY 2009 W aveform-agile sensing is motivated by the improvements in performance that can result when the transmitted waveform is dynamically tailored to match the sensing objective and the environment. Waveform agility in active radar systems can provide performance improvements such as reduced target-tracking error, improve...
The purpose of this study, the relationship between personality characteristics and resiliency with job satisfaction at the Razi University of Kermanshah. The study method descriptive- correlational. The statistical study population consisted of all employees were working in 1395 at Razi University in Kermanshah. According to Cochran formula using simple random sampling method, 150 of them wer...
Introduction: Domestic violence is the cause of most physical and psychological damages in women. The purpose of this study is to predict domestic violence against women based on Alexithymia and family performance by mediating differentiation in women visiting to comprehensive urban health services centers in Bojnourd. Methods: The present study is a structural type and the statistical populati...
We have considered a perfect sample method for model selection of finite mixture models with either known (fixed) or unknown number of components which can be applied in the most general setting with assumptions on the relation between the rival models and the true distribution. It is, both, one or neither to be well-specified or mis-specified, they may be nested or non-nested. We consider mixt...
UNLABELLED The purpose of this study was to prospectively determine whether combined MRI and (18)F-FDG PET is more accurate than MRI in assessing nonbenign uterine smooth muscle tumors (USMTs). METHODS Seventy patients (mean age, 49+/-10 y; range, 28-77 y) suspected of having nonbenign USMTs underwent both MRI and (18)F-FDG PET before surgery. Results were evaluated using receiver-operating-c...
The authors would like to thank Jesse Cochran for organizing the field work in Al Lith, crew of MV Dream 3 and captain Don Questo Sudan. Funds were provided by KAUST baseline research funding award CRG-1-BER-002 MLB. declare no conflict interest.
study was to identify factors, components and barriers to tourism development in the city as a tourist with the approach and methods of survey. the population of the study, all domestic and foreign tourists three months of the year 88 125 512 and 105 112 people respectively are included. according to cochran formula, 118 and 119 of the iranian tourists and foreign tourists as the sample size an...
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