نتایج جستجو برای: variance component

تعداد نتایج: 712735  

Journal: :Physical therapy 1998
S J Olney M P Griffin I D McBride

BACKGROUND AND PURPOSE Gait analyses yield redundant information that often is difficult to interpret. The purpose of this study was to show how principal-component analysis can provide insight into gait data obtained from persons with stroke. SUBJECTS Twenty male and 11 female adults who were ambulatory were studied (mean age = 60.5 years, SD = 11.8, range = 24-79; mean time since stroke = 1...

‎Multivariate normal-Poisson model has been recently introduced as a special case of normal stable Tweedie models‎. ‎The model is composed of a univariate Poisson variable‎, ‎and the remaining variables given the Poisson one are independent Gaussian variables with variance the value of the Poisson component‎. ‎Two characterizations of this model are shown‎, ‎...

2012

The performance results of the athletes competed in the 1988-2008 Olympic Games were analyzed (n = 166). The data were obtained from the IAAF official protocols. In the principal component analysis, the first three principal components explained 70% of the total variance. In the 1st principal component (with 43.1% of total variance explained) the largest factor loadings were for 100m (0.89), 40...

Journal: :international journal of applied behavioral sciences 0
samira soleimani ma in psychology at semnan university, phd candidate in psychology at ferdowsi university of mashhad, iran ali mohammad rezaei assistant professor, faculty of educational sciences & psychology, semnan university, semnan, iran farahnaz kianersi assistant professor, faculty of educational sciences & psychology, semnan university, semnan, iran

the basic objective of this paper was to study the flourishing of iranian students based on seligman model and its comparison based on demographic variables. to achieve this, 400 subjects of all students enrolled in the second semester of academic year of 2014-2015 in ferdowsi university of mashhad were randomly classified and studied as the sample group. flourishing questionnaire was used to t...

2015
Jeremy Pais

Using data from the National Longitudinal Survey of Youth, this study partitions competing sources of earnings variation into four components: a component for individual-level factors, a component for transitory factors, a component for occupational factors, and a component for geographic factors. From these variance components intraclass correlation coefficients are calculated and compared wit...

Journal: :فیزیک زمین و فضا 0
مهدی صادقی دانشجوی کارشناسی ارشد ژئوفیزیک (لرزه شناسی)، دانشگاه صنعتی شاهرود، ایران امین روشندل کاهو استادیار، دانشکده معدن، نفت و ژئوفیزیک، دانشگاه صنعتی شاهرود، ایران حمیدرضا سیاه کوهی استاد، گروه فیزیک زمین، موسسه ژئوفیزیک دانشگاه تهران، ایران علیرضا حیدریان دانشجوی دکتری ژئوفیزیک، موسسه ژئوفیزیک، دانشگاه تهران، ایران

spectral decomposition of time series has a significant role in seismic data processing and interpretation. since the earth acts as a low-pass filter, it changes frequency content of passing seismic waves. conventional representing methods of signals in time domain and frequency domain cannot show time and frequency information simultaneously. time-frequency transforms upgraded spectral decompo...

Journal: :Journal of clinical chemistry and clinical biochemistry. Zeitschrift fur klinische Chemie und klinische Biochemie 1984
J Lindena D Büttner I Trautschold

Statistical analysis of variance was applied to data from determinations of 14 plasma constituents in 25 rats in order to evaluate the analytical, experimental and biological (inter-and intraindividual) component of variance. Blood was taken seven times in intervals of 8-10 days, the last one by catheter technique and the other by heart puncture. The analytical portion of variance was determine...

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