نتایج جستجو برای: environmental coefficient of variation

تعداد نتایج: 21221059  

Journal: :Conference on Applied Statistics in Agriculture 1998

Journal: :Science in China Series A: Mathematics 1998

Journal: :Journal of Mathematics 2021

In this paper, the neutrosophic trimmed average, standard deviation, and coefficient of variation (NTCV) are introduced. The application proposed descriptive statistics is given with help measurement data. comparisons NTCV compared existing (NCV). From comparisons, it concluded that more efficient than NCV in terms consistency measures indeterminacy. Based on study, recommended to apply industr...

Journal: :Genetics 1992
D Houle

There are two distinct reasons for making comparisons of genetic variation for quantitative characters. The first is to compare evolvabilities, or ability to respond to selection, and the second is to make inferences about the forces that maintain genetic variability. Measures of variation that are standardized by the trait mean, such as the additive genetic coefficient of variation, are approp...

Journal: :Proceedings of the Symposium on Global Environment 2006

Journal: :Archives of disease in childhood 1999
W C Leung

This study was undertaken to determine whether exposure to various indoor pollutants is associated with a higher prevalence of respiratory symptoms, a diagnosis of asthma, or more variable peak flow rates. Four hundred and twenty-six children aged 8-11 years in four junior schools at three locations recorded respiratory symptoms and diagnosis of asthma using the ISAAC questionnaire. Daily peak ...

2013
Yuejiao Fu Hangjing Wang Augustine Wong

Inference for the mean of a normal distribution with known coefficient of variation is of special theoretical interest because the model belongs to the curved exponential family with a scalar parameter of interest and a two-dimensional minimal sufficient statistic. Therefore, standard inferential methods cannot be directly applied to this problem. It is also of practical interest because this p...

Afshin Soltani Akram Moeinirad Ebrahim Zeinali Farhood Yeganehpoor Serollah Galeshi

Objective: Environmental and economic challenges resulting from the application of nitrogen fertilizers have increased Concerns about its productivity in the agricultural systems. Thus an experiment in order to investigate ability SSM-Wheat for simulation growth and yield of wheat (cultivar N-87-20) in response to fertilizer nitrogen in the direction decrease Pollution environm...

Afshin Soltani Akram Moeinirad Ebrahim Zeinali Farhood Yeganehpoor Serollah Galeshi

Objective: Environmental and economic challenges resulting from the application of nitrogen fertilizers have increased Concerns about its productivity in the agricultural systems. Thus an experiment in order to investigate ability SSM-Wheat for simulation growth and yield of wheat (cultivar N-87-20) in response to fertilizer nitrogen in the direction decrease Pollution environm...

Journal: :Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology 2004
John D Potter

Two essential elements contribute to the risk of all diseases, especially cancer: genetic variation and environmental exposures. The completion of a solid draft of the human genome will allow researchers to characterize genotypes to ever-finer degrees of detail, and to continue to identify genetic traits associated with disease in individuals and families. However, much of the genetic variation...

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