نتایج جستجو برای: random yield

تعداد نتایج: 472442  

Journal: :Remote Sensing 2022

Crop yield forecasting is critical for enhancing food security and ensuring an appropriate supply. It to complete this activity with high precision at the regional national levels facilitate speedy decision-making. Tea a big cash crop that contributes significantly economic development, market of USD 200 billion in 2020 expected reach over 318 by 2025. As developing country, Bangladesh can be g...

2006
A. A. Bhatti

The objective of the study was to compare ranking of Sahiwal bulls selected on the basis of highest lactation milk yield of their dams with their estimated breeding values (EBVs) using an animal model. Data on 23,761 lactation milk yield records of 5,936 cows from five main Livestock Experiment Stations in Punjab province of Pakistan (1964-2004) were used for the study. At present the young A.I...

2004
Christian Ammon Joachim Spilke

Mixed linear models can be used to improve the informational value of milk yield forecasts. For this purpose two different functional approaches for modelling lactation curves are as well compared as three linear mixed models with varying random effects of individual animals and lactation numbers. It can be shown that more complex random regression models fit significantly better than fixed reg...

Journal: :علوم دامی ایران 0
حسین مهربان دکتری ژنتیک و اصلاح نژاد دام، گروه علوم دامی، دانشگاه شهرکرد سید مهدی اسماعیلی فرد دانشجوی دکتری ژنتیک و اصلاح نژاد دام، گروه علوم دامی، دانشگاه علوم کشاورزی و منابع طبیعی ساری مجتبی نجفی دانشجوی دکتری ژنتیک و اصلاح نژاد دام، گروه علوم دامی، علوم کشاورزی و منابع طبیعی ساری بیتا عباسی مشائی دانشجوی دکتری ژنتیک و اصلاح نژاد دام، گروه علوم دامی، علوم کشاورزی و منابع طبیعی ساری ابراهیم اسدی خشوئی دکتری ژنتیک و اصلاح نژاد دام، گروه علوم دامی، دانشگاه شهرکرد

a data file containing 607662 (317608) milk (open days) records belonging 294417 (177838) holstein cows that were calved from 1983 to 2008 was used. the bivariate repeatability model was used for data analyzing so that herd, calving year, calving month, days in milk (only for milk trait) and calving age for each parity, were assumed as fixed effects and additive genetics and permanent environme...

Journal: :پژوهش های علوم دامی ایران 0
عاطفه سیددخت علی اصغر اسلمی نژاد مجتبی طهمورث پور همایون فرهنگ فر

in this study a total of 171,360 monthly test day milk records obtained from first lactation of iranian holstein cattle (three times a day milking) distributed in 96 herds and calved from 1999 to 2008 were used to estimate genetic parameters and to predict breeding values of the animals. the data was analyzed using random regression test day model. the results showed that average of heritabilit...

1998
Estelle L. Basor Harold Widom

The purpose of this paper is to describe asymptotic formulas for determinants of certain operators that are analogues of Wiener-Hopf operators. The determinant formulas yield information about the distribution functions for certain random variables that arise in random matrix theory when one rescales at “the edge of the spectrum”.

1999
OFER ZEITOUNI

We study the fluctuations, in the large deviations regime, of the longest increasing subsequence of a random i.i.d. sample on the unit square. In particular, our results yield the precise upper and lower exponential tails for the length of the longest increasing subsequence of a random permutation. §.

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