Comparison of linear and nonlinear models to estimate body weight of Pelibuey ewes from body measurements

2021 ◽  
Vol 53 (1) ◽  
Author(s):  
Rafael Macedo-Barragán ◽  
Victalina Arredondo-Ruiz ◽  
Carlos Haubi-Segura ◽  
Paola Castillo-Zamora
Keyword(s):  
Body Weight ◽  
Nonlinear Models ◽  
Body Measurements ◽  
Linear And Nonlinear

scholarly journals A Comparative Study of the Nonlinear Methods for Estimate Body Weight by Body Measurements on Different Sample Sizes in Morkaraman Sheeps

2021 ◽  
Author(s):  
Mutlu YAGANOGLU
Keyword(s):  
Body Weight ◽  
Correlation Analysis ◽  
Body Length ◽  
Growth Models ◽  
Nonlinear Models ◽  
Small Sample ◽  
The Body ◽  
Body Measurements ◽  
Sample Sizes ◽  
Small Sample Sizes

Abstract The objective of this study was to estimate body weight of Morkaraman sheeps from body measurements with nonlinear models. Selected 110 sheeps 3-5 years were scored for body weight, body length, height at wither, chest width and pump width. For determine relationships with body weight between body measurements, correlation analysis was performed. The results of the correlation analysis indicated that the highest relationship according to the all sample sizes were body weight between body length (0.95, 0.90, 0.83, 0.81). Considering all parameters included in the model, the parameter showing the highest correlation with body weight was determined as body length according to all sample sizes. the highest correlation was found in 50 sample sizes (r:0.95). According to the small sample sizes (10-20), Logistic and Saturation growth models can be used to determine the body weight by using body length, on the other hand, Incomplete gamma model is more succesful to estimate body weight when sample size is nearly 30 and 50.

scholarly journals Evaluation of a FO-PID Controller in a Buck DC/DC Converter Model

2019 ◽  
pp. 1-8
Author(s):  
German A Munoz-Hernandez ◽  
Ana S Damian-Mora ◽  
Jose Ramirez-Espinoza ◽  
Jesus Chavez-Galan
Keyword(s):  
Fractional Order ◽  
Pid Controller ◽  
Nonlinear Models ◽  
Electrical Energy ◽  
Degree Of Freedom ◽  
Pid Controllers ◽  
Adaptive Controllers ◽  
Operational Conditions ◽  
Linear And Nonlinear ◽  
Common Device

The applications of electrical energy converters are wide. It is a common device that can be found in almost every apparatus, both industrial and domestic. This work will deal with linear and nonlinear models of DC/DC converters. Those models will used to probe, by simulation, classic and advance controllers. PID controllers have shown a good response regulating DC/DC converters, for that reason the inclusion of two more degree of freedom due to the Integral and derivative of Fractional Order, could improve the performance of these controllers. Furthermore, Piecewise modeling can be useful to obtain adaptive controllers whose parameters change at different operational conditions.

scholarly journals Prediction of body weight from body measurements in Pirlak Lambs

2018 ◽  
Vol 5 (6) ◽  
pp. 56-58
Author(s):  
Koray ÇELİKELOĞLU ◽  
◽  
Mustafa TEKERLİ ◽  
Keyword(s):  
Body Weight ◽  
Body Measurements

scholarly journals Morphological characterization of Arab and Oromo goats in northwestern Ethiopia

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Oumer Sheriff ◽  
Kefyalew Alemayehu ◽  
Aynalem Haile
Keyword(s):  
Body Weight ◽  
Coat Color ◽  
Strong Association ◽  
Correlation Coefficients ◽  
Field Research ◽  
Morphological Characterization ◽  
The Body ◽  
Regression Equations ◽  
Body Measurements ◽  
Chest Girth

Abstract Background An exploratory field research was conducted in northwestern Ethiopia, to characterize the morphological features of Arab and Oromo goat populations as an input to design community-based breeding programs. Ten qualitative and nine quantitative traits were considered from 747 randomly selected goats. All data collected during the study period were analyzed using R statistical software. Results Plain white coat color was predominantly observed in Arab goats (33.72%) while plain brown (deep and light) coat color was the most frequent in Oromo goats (27.81%). The morphometric measurements indicated that Oromo goats have significantly higher body weight and linear body measurements than Arab goats. Positive, strong and highly significant correlations were obtained between body weight and most of the body measurements in both goat populations. The highest correlation coefficients of chest girth with body weight for Arab (r  =  0.95) and Oromo (r  =  0.92) goat populations demonstrated a strong association between these variables. Live body weight could be predicted with regression equations of y  =  − 33.65  +  0.89  ×  for Arab goats (R2  =  90) and y  =  − 37.55  +  0.94  ×  for Oromo goats (R2  =  85), where y and x are body weight and chest girth, respectively, in these goat types. Conclusions The morphological variations obtained in this study could be complemented by performance data and molecular characterization using DNA markers to guide the overall goat conservation and formulation of appropriate breeding and selection strategies.

scholarly journals Automated Image Registration: II. Intersubject Validation of Linear and Nonlinear Models

1998 ◽  
Vol 22 (1) ◽  
pp. 153-165 ◽  
Author(s):  
Roger P. Woods ◽  
Scott T. Grafton ◽  
John D. G. Watson ◽  
Nancy L. Sicotte ◽  
John C. Mazziotta
Keyword(s):  
Image Registration ◽  
Nonlinear Models ◽  
Linear And Nonlinear ◽  
Automated Image Registration
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