نتایج جستجو برای: average variance

تعداد نتایج: 472244  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1996
Z H Duan L N Howard

Polyethylene chains in the amorphous region between two crystalline lamellae M unit apart are modeled as random walks with one-step memory on a cubic lattice between two absorbing boundaries. These walks avoid the two preceding steps, though they are not true self-avoiding walks. Systems of difference equations are introduced to calculate the statistics of the restricted random walks. They yiel...

سید رضا میرائی آشتیانی, , مصطفی صادقی, , محمد مرادی شهربابک, , محمدباقر صیادنژاد, ,

This research was carried out to investigate the heterogeneity of milk yield variance components in different production levels of holstein cattles. The first lactation milk yield records of 95945 Holstein cattles, which had calved in 651 herds through years 1991 to 2000, were used in this research. Data was collected by the Animal Breeding Center of Iran and adjusted for two-time milking per d...

Journal: :The Journal of the Australian Mathematical Society. Series B. Applied Mathematics 1996

ژورنال: علوم آب و خاک 2006
سید رضا میرائی آشتیانی, , مصطفی صادقی, , محمد مرادی شهربابک, , محمدباقر صیادنژاد, ,

This research was carried out to investigate the heterogeneity of milk yield variance components in different production levels of holstein cattles. The first lactation milk yield records of 95945 Holstein cattles, which had calved in 651 herds through years 1991 to 2000, were used in this research. Data was collected by the Animal Breeding Center of Iran and adjusted for two-time milking per d...

Journal: :MIS Quarterly 2011
Scott B. MacKenzie Philip M. Podsakoff Nathan P. Podsakoff

Evaluate goodness of fit of the measurement model Examine significance of the χ (p > .10), CFI (> .95), RMSEA (< .06), and SRMR (< .08). Conduct a simultaneous test of the vanishing tetrads implied by the model (Bollen and Ting 2000). Examine significance of the χ (p > .10), CFI (> .95), RMSEA (< .06), and SRMR (< .08). For models including 2+ reflective indicators, conduct a simultaneous test ...

2012
Stephen W. Raudenbush Sean F. Reardon Takako Nomi

Multisite trials can clarify the average impact of a new program and the heterogeneity of impacts across sites. Unfortunately, in many applications, compliance with treatment assignment is imperfect. For these applications, we propose an instrumental variable (IV) model with person-specific and site-specific random coefficients. Site-specific IV coefficients can be interpreted as site-average e...

2014
Marco Gabella

In several cases (e.g., thermal noise, weather echoes, ...), the incoming signal to a radar receiver can be assumed to be Rayleigh distributed. When estimating the mean power from the inherently fluctuating Rayleigh signals, it is necessary to average either the echo power intensities or the echo logarithmic levels. Until now, it has been accepted that averaging the echo intensities provides sm...

2014
Sumit Kumar Garimella Ramamurthy

In this work, we propose an efficient spectrum sensing technique based on Doubly Cognitive Architecture (DCA) and an efficient spectrum monitoring technique based on partial spectrum sensing. In addition to this, we have developed a one of its kind testbed for Cognitive Radio-based wireless sensor network (CRWSN), where the proposed techniques are successfully implemented and tested. The testbe...

Journal: :Applied psychophysiology and biofeedback 2003
Lori A Rokicki Timothy T Houle Lara K Dhingra Stephan R Weinland Amanda M Urban Rishi K Bhalla

The effectiveness of EMG biofeedback training for tension headache has been well established. Previous studies evaluating changes in an average EMG activity score from pre- to posttreatment have not consistently found a relationship between a reduction in average EMG activity and headache improvement at posttreatment. The current study is a preliminary analysis of the utility of EMG variance as...

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