نتایج جستجو برای: explaining 6789 percent of total variances

تعداد نتایج: 21200340  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم انسانی 1390

one very decisive factor in students’ academic destiny is the result they get at final term examinations. because of its importance, both students and teachers are curiously anxious about them. as normally it is the case, these final term tests are prepared hurriedly in short time by teachers which result in students’ dissatisfaction, complaining on how the test was different from their expecta...

Journal: Addiction and Health 2015
Ali Bahramnejad, Marjan Rabani-Bavojdan Mozhgan Rabani-Bavojdan Nahid Kaviani,

Background: Positive perfectionism helps the individual to experience fewer worries and less anxiety. The aim of the present study was to assess the value of coping strategies to predict perfectionism in drug-user women. Methods: This cross-sectional study was performed on 361 consecutive drug-user women who were randomly selected from a total of 6237 women referring to the Drug Abuse Centers o...

Journal: :تحقیقات اقتصاد و توسعه کشاورزی ایران 0
علی اسدی استاد دانشکده اقتصاد و توسعه کشاورزی دانشگاه تهران احسان قلی فر دانشجوی دکتری ترویج کشاورزی دانشگاه تربیت مدرس مرتضی اکبری دانشجوی دکتری دانشکده اقتصاد و توسعه کشاورزی دانشگاه تهران

the increasing trend in agricultural wastes is one of the most important challenging problems in most countries, especially the developing ones. policymakers and researchers being on the alert, do their best to reduce these wastes. the main purpose followed in this study, done in 2007, was to investigate the factors affecting the level of wastes of apple in zanjan province, iran. the study popu...

Akram Farhadi, Alireza Namazi Shabestari, Leila Sadegh Moghdada, Narjes Khatoon Sadeghi, Pouya Farokhnezhad Afshar, Shima Nazari,

Introduction: The elderly need social support to reduce their physical and mental disabilities. Perceived social support is one of the effective factors in the lifestyle of older adults. Objective: This study aimed to determine the association between perceived social support and mental health status among older adults. Materials and Methods: This research is a cross-sectional analytical stud...

Journal: :حفاظت گیاهان 0
محمد حسن راشد محصل ابراهیم کازرونی منفرد محمد تقی آل ابراهیم

abstract wild lettuce (lactuca serriola) is an annual weed with seed reproduction. an experiment was conducted to evaluate some environmental effects on germination and emergence of this weed. the type of design was completely randomized with four replications in which factors were arranged as factorial. the experiment was carried out with 11 cm petri dishes in a germinator (10 °c) and without ...

2014
Motohide Nishio Masahiro Satoh

We evaluated the performance of GBLUP including dominance genetic effect (GBLUP-D) by estimating variances and predicting genetic merits in a computer simulation and 2 actual traits (T4 and T5) in pigs. In simulation data, GBLUP-D explained more than 50% of dominance genetic variance. Moreover, GBLUP-D yielded estimated total genetic effects over 1.2% more accurate than those yielded by GBLUP. ...

2017
L. Dale Van Vleck

Henderson described a method to reduce the number of mixed-model equations when estimating additive and nonadditive genetic variances or predicting additive and nonadditive genetic merits. The extension to a maternal effects model is straightforward. When maternal genetic effects are strictly additive, an algebraic identity was found that reduces by a factor of two the order of a matrix that mu...

Journal: :Journal of animal science 1993
L D Van Vleck

Henderson described a method to reduce the number of mixed-model equations when estimating additive and nonadditive genetic variances or predicting additive and nonadditive genetic merits. The extension to a maternal effects model is straight-forward. When maternal genetic effects are strictly additive, an algebraic identity was found that reduces by a factor of two the order of a matrix that m...

ژورنال: علوم آب و خاک 2007
آقافخر میرلوحی, , محمد مهدی مجیدی, ,

Seed traits are an important measure of the effects of endophytic fungi in Festuca genus. In this study, endophyte-infected (E+) and un-infected (E-) clones of the same tall fescue genotypes were used to investigate the effects of endophyte on the seed production and associated traits. Endophyte infection resulted in 32.8% increase of total seeds by weight, 34.6% seeds per plant, and 30.6% pani...

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