Total length estimation of the Brazilian flathead Percophis brasiliensis , using morphometric relationships of skull, pectoral girdle bones, otoliths and specific body measures, in Argentine waters

2013 ◽  
Vol 30 (2) ◽  
pp. 377-380 ◽  
Author(s):  
J. E. Perez Comesaña ◽  
P. Clavin ◽  
K. Arias ◽  
C. Riestra
Keyword(s):  
Pectoral Girdle ◽  
Total Length ◽  
Length Estimation ◽  
Percophis Brasiliensis

Organogenesis of the Opercular Apparatus in Salvelinus fontinalis (Mitchill)

1963 ◽  
Vol 20 (2) ◽  
pp. 347-372 ◽  
Author(s):  
L. R. Day
Keyword(s):  
Salvelinus Fontinalis ◽  
Goblet Cells ◽  
Pectoral Girdle ◽  
Hyoid Arch ◽  
Total Length ◽  
Mesenchymal Tissue

The opercular fold in Salvelinus fontinalis (Mitchill) begins as a bulging, outward and backward, of the undifferentiated dorsally-packed mesenchymal tissue of the hyoid arch in embryos of 6.0–6.5 mm total length. From 6.5 to 9.0 mm, backward growth takes place although no gill arches are covered. The epithelium of the opercular anlage is 2- to 3-layered laterally and 1- to 2-layered with smaller nuclei medially. From 9.0 to 14.0 mm, i.e. hatching, the membranous lateral opercular and ventral branchiostegal portions extend posteriorly to cover the four gill arches. Ossification commences in the opercle, the jaws and the pectoral girdle. The epithelium which has scattered goblet cells is 3- to 4-layered antero-laterally, 1- to 2-layered postero-laterally and one cell in thickness medially. From 14.0 to 30.0 mm length ossification of the skeletal elements of the opercular apparatus takes place. The musculature of the operculum is complete at hatching.

Total Length Estimation of Red Drum from Head Dimensions

1996 ◽  
Vol 58 (4) ◽  
pp. 289-290 ◽  
Author(s):  
J. E. Serafy ◽  
C. M. Schmitz ◽  
T. R. Capo ◽  
M. E. Clarke ◽  
J. S. Ault
Keyword(s):  
Red Drum ◽  
Total Length ◽  
Length Estimation

scholarly journals Back-calculation of total length of Argentine seabass Acanthistius patachonicus using morphometric relationships of bones and measurements of the body

2020 ◽  
Vol 33 (1) ◽  
pp. 69-75
Author(s):  
Cecilia M. Riestra ◽  
Jorge E. Perez Comesaña † ◽  
Karina A. Arias ◽  
Leando L. Tamini ◽  
Gustavo E. Chiaramonte
Keyword(s):  
Stomach Contents ◽  
The Body ◽  
Pectoral Girdle ◽  
Regression Equations ◽  
Southwestern Atlantic ◽  
Predictive Regression ◽  
Total Length ◽  
Southwestern Atlantic Ocean ◽  
Back Calculation ◽  
External Characteristics

Predictive regression equations were generated to estimate total length of the Argentine seabass (Acanthistius patachonicus) using skull and pectoral girdle bones, specific body, and otolith lengths. Regressions of skull and pectoral girdle bones, specific body and otolith lengths were all statistically significant. Generating regressions between specific bones and external characteristics of the body meaningfully increases the ability to analyse the information obtained from studies of stomach contents of predator fish from the Southwestern Atlantic Ocean.

OFFLINE YORÙBÁ HANDWRITTEN WORD RECOGNITION USING GEOMETRIC FEATURE EXTRACTION AND SUPPORT VECTOR MACHINE CLASSIFIER

2020 ◽  
Vol 5 (2) ◽  
pp. 504
Author(s):  
Matthias Omotayo Oladele ◽  
Temilola Morufat Adepoju ◽  
Olaide ` Abiodun Olatoke ◽  
Oluwaseun Adewale Ojo
Keyword(s):  
Support Vector Machine ◽  
Feature Extraction ◽  
Word Recognition ◽  
Support Vector Machine Classifier ◽  
Recognition Accuracy ◽  
Recognition System ◽  
Support Vector ◽  
Geometric Features ◽  
Total Length ◽  
Yoruba Language

Yorùbá language is one of the three main languages that is been spoken in Nigeria. It is a tonal language that carries an accent on the vowel alphabets. There are twenty-five (25) alphabets in Yorùbá language with one of the alphabets a digraph (GB). Due to the difficulty in typing handwritten Yorùbá documents, there is a need to develop a handwritten recognition system that can convert the handwritten texts to digital format. This study discusses the offline Yorùbá handwritten word recognition system (OYHWR) that recognizes Yorùbá uppercase alphabets. Handwritten characters and words were obtained from different writers using the paint application and M708 graphics tablets. The characters were used for training and the words were used for testing. Pre-processing was done on the images and the geometric features of the images were extracted using zoning and gradient-based feature extraction. Geometric features are the different line types that form a particular character such as the vertical, horizontal, and diagonal lines. The geometric features used are the number of horizontal lines, number of vertical lines, number of right diagonal lines, number of left diagonal lines, total length of all horizontal lines, total length of all vertical lines, total length of all right slanting lines, total length of all left-slanting lines and the area of the skeleton. The characters are divided into 9 zones and gradient feature extraction was used to extract the horizontal and vertical components and geometric features in each zone. The words were fed into the support vector machine classifier and the performance was evaluated based on recognition accuracy. Support vector machine is a two-class classifier, hence a multiclass SVM classifier least square support vector machine (LSSVM) was used for word recognition. The one vs one strategy and RBF kernel were used and the recognition accuracy obtained from the tested words ranges between 66.7%, 83.3%, 85.7%, 87.5%, and 100%. The low recognition rate for some of the words could be as a result of the similarity in the extracted features.

The Axis Feature: Illusionary Effects on Children's Judgments of Length

1982 ◽  
Vol 55 (3) ◽  
pp. 720-722
Author(s):  
Anat Scher
Keyword(s):  
Relative Length ◽  
The Other ◽  
Context Model ◽  
Structural Pattern ◽  
Perceptual Judgments ◽  
Length Estimation ◽  
Different Diameters

The effect of the position of lines on length estimation was investigated. 40 5-yr.-olds were asked to compare the two arms of an L-shaped figure presented inside circular frames of different diameters. For each figure one of the arms was on the axis, that is, the diameter, and the other arm was perpendicular to that axis. In making perceptual judgments about the relative length of two lines the children tended to describe the on-axis line as longer than the off-axis line. This illusion which, presumably, reflects a perceptual force induced by the characteristics of the structural pattern, supports the context model of visual anomalies.

Analysis of compliance of box sizes to comfortable housing of highly productive cows

2020 ◽  
pp. 42-50
Author(s):  
V. Turlyun
Keyword(s):  
Free Movement ◽  
Research Results ◽  
Total Length ◽  
Genetic Potential ◽  
Productive Potential ◽  
The Difference

The analysis of some herds of imported cattle under the conditions of Russian farms had been shown that the genetic potential of imported cattle in many farms has being realized only by 57 %, with the output of up to 50 % of the cattle during the first 2 years. The reason for this is the discrepancy between the conditions of the biological needs of animals. In this regard, the study of factors that affect the provision of comfortable conditions for animals plays an important role. This is especially true for Holstein animals, which are more susceptible to various diseases. In accordance with the technological solutions used in modern large complexes, the loose housing method of maintenance is mainly used. This method allows the animal to move freely, providing access to the consumption of water and feed, as well as timely rest. This determines the importance of the requirements for the size of the boxes for the rest of animals, which should ensure dryness and cleanliness in the process of resting cows, prevent damage to animals, as well as the ability of other animals to displace each other. The crossbars should not interfere with the free movement of the cow in the process of lowering to the floor and getting up due to their flexibility. The dimensions of the boxes should be made taking into account the measurements of the animals’ torso, as well as the amplitude of movement in the process of lowering and rising. The purpose of the research was to study the size of boxes and their compliance with the biological needs of highly productive imported cattle. An analysis of the compliance of conditions for housing highly productive cattle of Canadian and Australian origin with their biological needs under the conditions of a mega farm has been presented in the paper. Calculation on the basis of measurements of animals has been shown that animals of the Canadian selection require boxes with a total length of at least 279 cm, Australian – 271 cm. The difference with the required width of the box has been also established. For the group of cows of Canadian selection it should be at least 120 cm, for the Australian – 114 cm. Research results have been shown that the discrepancy in the design of boxes for comfortable rest of animals is a deterrent to the realization of their genetic productive potential.

REASSESSMENT OF THE MOSASAUR PECTORAL GIRDLE AND ITS ROLE IN AQUATIC LOCOMOTION

2019 ◽  
Author(s):  
Kiersten K. Formoso ◽  
◽  
Michael B. Habib ◽  
David J. Bottjer
Keyword(s):  
Pectoral Girdle ◽  
Aquatic Locomotion
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