scholarly journals ALGORITHM FOR ESTIMATING OF BREEDING VALUE OF HORSES OF BELARUSIAN HARNESS, RUSSIAN DRAFT AND RUSSIAN TROTTER BREEDS

2017 ◽  
Vol 53 ◽  
pp. 90-100 ◽  
Author(s):  
Y. I. German ◽  
M. A. Gorbukov ◽  
I. P. Sheyko
Keyword(s):  
Statistical Models ◽  
Theoretical Basis ◽  
Quantitative Traits ◽  
Breeding Value ◽  
Practical Significance ◽  
Expert Evaluation ◽  
Selected Traits ◽  
Performance Development ◽  
Linear Statistical Models ◽  
Improve Reliability

Algorithms for evaluation of breeding (genetic) values of Belarusian Harness, Russian Draft and Russian Trotter breeds of horses by quantitative traits of own performance (development, expert evaluation of selected traits) of horses and progeny were developed. The theoretical basis for establishment of breeding value of horses by quantitative traits are the linear statistical models, based on which the breeding value is expressed by deviation of trait value of the evaluated animals from the average determined for the breed in our country. The practical significance of the developed system is to improve reliability of horses evaluation and accelerate it for 2–3 years.

scholarly journals Can artificially selected phenotypes influence a component of field fitness? Thermal selection and fly performance under thermal extremes

2006 ◽  
Vol 274 (1611) ◽  
pp. 771-778 ◽  
Author(s):  
Torsten Nygaard Kristensen ◽  
Volker Loeschcke ◽  
Ary A Hoffmann
Keyword(s):  
High Performance ◽  
Quantitative Traits ◽  
Genetic Basis ◽  
Selected Lines ◽  
Resistant Lines ◽  
Correlated Patterns ◽  
Different Temperatures ◽  
Evolutionary Trajectories ◽  
Low Performance ◽  
Selected Traits

Artificially selected lines are widely used to investigate the genetic basis of quantitative traits and make inferences about evolutionary trajectories. Yet, the relevance of selected traits to field fitness is rarely tested. Here, we assess the relevance of thermal stress resistance artificially selected in the laboratory to one component of field fitness by investigating the likelihood of adult Drosophila melanogaster reaching food bait under different temperatures. Lines resistant to heat reached the bait more often than controls under hot and cold conditions, but less often at intermediate temperatures, suggesting a fitness cost of increased heat resistance but not at temperature extremes. Cold-resistant lines were more common at baits than controls under cold as well as hot field conditions, and there was no cost at intermediate temperatures. One of the replicate heat-resistant lines was caught less often than the others under hot conditions. Direct and correlated patterns of responses in laboratory tests did not fully predict the low performance of the heat selected lines at intermediate temperatures, nor the high performance of the cold selected lines under hot conditions. Therefore, lines selected artificially not only behaved partly as expected based on laboratory assays but also evolved patterns only evident in the field releases.

scholarly journals All about the ⊥ with its applications in the linear statistical models

2015 ◽  
Vol 13 (1) ◽  
Author(s):  
Augustyn Markiewicz ◽  
Simo Puntanen
Keyword(s):  
Statistical Models ◽  
Inner Product ◽  
Real Matrix ◽  
Inner Products ◽  
Column Space ◽  
The Matrix ◽  
Linear Statistical Models ◽  
Extensive List

Abstract For an n x m real matrix A the matrix A⊥ is defined as a matrix spanning the orthocomplement of the column space of A, when the orthogonality is defined with respect to the standard inner product ⟨x, y⟩ = x'y. In this paper we collect together various properties of the ⊥ operation and its applications in linear statistical models. Results covering the more general inner products are also considered. We also provide a rather extensive list of references

scholarly journals IMPROVEMENT OF THE MANAGEMENT SYSTEM OF PRODUCTION COOPERATION IN VOLOGDA OBLAST

2019 ◽  
Vol 29 (6) ◽  
pp. 754-762
Author(s):  
E.P. Kuznetsova
Keyword(s):  
Graduate Students ◽  
Management System ◽  
Theoretical Basis ◽  
Scientific Community ◽  
Regional Economy ◽  
Practical Significance ◽  
Effective Solution ◽  
Vologda Oblast ◽  
Low Level ◽  
Industrial Cooperation

Currently, the issues of development of the regional economy, which require an effective solution, are becoming relevant for government and management bodies and the scientific community. One of the tools that contribute to solving the problems of the regional economy is the development of industrial cooperation. In this connection, the author made an attempt to study this process, as well as to develop comprehensive tools for managing the processes of industrial cooperation in the region (for example, Vologda Oblast). The work, on the basis of a sociological survey of the heads of enterprises of Vologda Oblast, reflects the state of cooperation in the region. An assessment of the level of development of cooperation is given, problems associated with a low level of interaction between enterprises, as well as lacking methods of efficiency from cooperation in the region are identified, in connection with which the author studied the management system of production cooperation in Vologda Oblast and proposed measures to improve it. The results obtained during the study contribute to the development and systematization of the theoretical basis of the problem under consideration. The practical significance of the work is related to the possibility of using the results of the research by researchers, graduate students, undergraduates, bachelors dealing with the problems of development of industrial cooperation.

Applied Linear Statistical Models.

1975 ◽  
Vol 138 (2) ◽  
pp. 258 ◽  
Author(s):  
V. Barnett ◽  
John Neter ◽  
William Wasserman
Keyword(s):  
Statistical Models ◽  
Linear Statistical Models
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