scholarly journals Characteristics Of The Population Of The Yaroslavl Breed Of Cattle Based On The Assessment Of Polymorphism Of Eab - Loci

2021 ◽  
Vol 901 (1) ◽  
pp. 012032
Author(s):  
A V Ilina ◽  
E G Evdokimov ◽  
M V Abramova ◽  
A V Konovalov
Keyword(s):  
Euclidean Distance ◽  
Cattle Breed ◽  
Blood Groups ◽  
Main Group ◽  
Parent Population ◽  
Optimal Value

Abstract The paper presents the characteristics of micropopulations of the Yaroslavl cattle breed based on the assessment of the polymorphism of the EAB-locus of blood groups. The presented dendrogram made it possible to identify the farms most distant from the main group. To identify the closest and most distant groups of animals, the Euclidean distance was calculated. The efficiency of division into groups was assessed using the Davis-Boldin index, which made it possible to distribute the population into three clusters with the most optimal value, where each group obtained has its own parent population from which it developed.

scholarly journals Optimization of distance formula in K-Nearest Neighbor method

2020 ◽  
Vol 9 (1) ◽  
pp. 326-338 ◽  
Author(s):  
Arif Ridho Lubis ◽  
Muharman Lubis ◽  
Al- Khowarizmi
Keyword(s):  
Learning Process ◽  
Euclidean Distance ◽  
Nearest Neighbor ◽  
Current Data ◽  
The Other ◽  
K Nearest Neighbor ◽  
Object Based ◽  
Optimal Value ◽  
Learning Data ◽  
Distance Formula

K-Nearest Neighbor (KNN) is a method applied in classifying objects based on learning data that is closest to the object based on comparison between previous and current data. In the learning process, KNN calculates the distance of the nearest neighbor by applying the euclidean distance formula, while in other methods, optimization has been done on the distance formula by comparing it with the other similar in order to get optimal results. This study will discuss the calculation of the euclidean distance formula in KNN compared with the normalized euclidean distance, manhattan and normalized manhattan to achieve optimization results or optimal value in finding the distance of the nearest neighbor.

scholarly journals Influence of homozygosis by marker alleles of blood groups on the productivity, reproductive qualities and longevity of cows

2019 ◽  
Vol 20 (5) ◽  
pp. 488-497
Author(s):  
N. V. Kuzmina ◽  
V. I. Dmitrieva ◽  
D. N. Koltsov ◽  
M. E. Gontov
Keyword(s):  
Milk Yield ◽  
Agricultural Production ◽  
Milk Fat ◽  
Cattle Breed ◽  
Blood Groups ◽  
Weak Effect ◽  
Anova Analysis ◽  
Similar Nature ◽  
One Way Anova ◽  
Pedigree Breeding

Currently, in populations of different cattle breeds there is elimination of a number of alleles of blood groups and an in-crease in the homozygosity coefficient that leads to rise in the amount of homozygous animals. In this regard, the aim of the research was to study the effect of homozygosity by EAV-locus of blood groups on the productive and reproductive characteristics of cows. The research was carried out on the farms of the Smolensk region for breeding of Sychevskaya cattle breed: the “Rybkovskoye” breeding farm and pedigree breeding unit Agricultural Production Cooperative (APC) named after Uritsky. On these farms there were selected 2078 cows, homozygous according to alleles of EAV - locus of blood groups and heterozygous animals born in 2010-2014 (21 and 581, 50 and 1426 heads, respectively). The study has shown that the average milk yield over the productive life of homozygotes in the herd of the “Rybkovskoye” farm is insignificantly lower and on the farm named after Uritsky this parameter is significantly higher. Application of one-way ANOVA analysis determined the weak effect of genotype on the productivity of animals on the “Rybkovskoe” farm only for the first lactation with factorial effect in milk yield, milk fat and protein 1.2, 1.5 and 1.1%, respectively. On the breeding farm named after Uritsky the factorial effect in milk yield and fatyield for the second lactation was 0.3 and 0.4%, and on the average over the life in milk yield it was 0.4%. The analysis of repro-ductive qualities: the age of the first calving, the age of the first fruitful insemination, multiplicity of insemination to lactation, the number of days before the first insemination in the current lactation, the duration of open days revealed close values, similar nature of distribution and variation of these indicators, absence of statistically significant differences between them in homozy-gotes and heterozygotes. A weak (2% or less) influence of homozygosity on productive longevity, which determines the superiority of homozygous cows over heterozygous, characteristic for samples from both farms, has been found.

A Particle Swarm Optimization Based on Dynamic Parameter Modification

2010 ◽  
Vol 40-41 ◽  
pp. 201-205 ◽  
Author(s):  
Ying Chao Zhang ◽  
Xiong Xiong ◽  
Chao Chen ◽  
Xin Yi Huang
Keyword(s):  
Particle Swarm Optimization ◽  
Euclidean Distance ◽  
Particle Swarm ◽  
Dynamic Parameter ◽  
Particle Swarm Optimizer ◽  
Swarm Optimization ◽  
Optimal Value ◽  
Parameter Modification ◽  
Time Parameters ◽  
Euclidean Distances

A new particle swarm optimization based on dynamic parameter modification is proposed in this paper (Dynamic Parameter Modification Particle Swarm Optimizer, DPSO). In DPSO algorithm , is doing oscillating decay breaking through the constraint of topical linear decreasing, and the Euclidean distance and is calculated, which respectively stand for the Euclidean distances form the position of particle to the best position that the particle has passed and the best position that all the particles have passed under the time . Parameters and of topical PSO are modified dynamically based on the comparison of and in order to coordinate between global search and local search. Then find out the optimal value of Goldstein-Price function using topical PSO and the improved DPSO respectively, and the results demonstrate that compared to topical PSO, DPSO algorithm avoids falling into the local minimum and improves the search efficiency.

Interrelations of Thrombo-Embolic Diseases and Blood-Group Distribution

1963 ◽  
Vol 09 (02) ◽  
pp. 472-474 ◽  
Author(s):  
W Dick ◽  
W Schneider ◽  
K Brockmüller ◽  
W Mayer
Keyword(s):  
Normal Distribution ◽  
Blood Group ◽  
Blood Groups ◽  
The Other ◽  
Other Hand ◽  
Group Distribution

SummaryA comparison between the repartition of the blood groups in 461 patients suffering from thromboembolic disorders and the normal distribution has shown a statistically ascertained predominance of the group A1. On the other hand the blood groups 0 and A2 are distinctly less frequent than in the normal distribution.

Clinical efficacy of osteopathic correction in the complex treatment of patients with unoperated open-angle glaucoma

2020 ◽  
pp. 97-105
Author(s):  
E. N. Simakova ◽  
O. V. Stenkova
Keyword(s):  
Intraocular Pressure ◽  
Drug Therapy ◽  
Primary Open Angle Glaucoma ◽  
Open Angle Glaucoma ◽  
Randomized Study ◽  
Main Group ◽  
Control Group ◽  
Open Angle ◽  
Complex Treatment ◽  
Hypotensive Drug

Introduction. Glaucoma is one of the most significant eye diseases. It is often diagnosed, not always amenable to therapy, and can lead to a complete loss of visual functions. In recent years, the method of osteopathic correction has become widespread as one of the effective methods of treatment and rehabilitation of patients with pathologies of various body systems. In the pathogenesis of glaucoma, it is customary to distinguish a dystrophic concept, which considers primary open-angle glaucoma as a result of dystrophic changes in the connective tissue, as well as in the endothelial lining of the trabeculae and Schlemm′s canal, especially destructive changes in mitochondria and the alteration of their functional activity. A vascular concept is also distinguished. According to this concept, the central link in the pathogenesis of glaucoma is circulatory disorder in the ciliary vessels, ocular artery, and major vessels of the head and neck, it can be assumed that osteopathic correction in the treatment of patients with open-angle glaucoma will be pathogenetically substantiated and will have a positive effect on intraocular pressure and trophicity of the optic nerve. The goal of research — to study the influence of in osteopathic correction on the nature of unoperated glaucoma (stage IIA) and to substantiate the possibility of using osteopathic correction in the complex treatment of patients with this pathology.Materials and methods. A prospective controlled randomized study was conducted at 52 city polyclinics, branch 3, Moscow, from January 2018 to January 2019. 40 patients (70 eyes) aged 50 to 75 years with primary open-angle glaucoma IIA stage were examined. At this stage of the disease, patients most often seek medical care and the issue of conservative management is primarily considered. All patients were divided into two groups of 20 people: the main group and the control group. The treatment in the main group included hypotensive drug therapy and osteopathic correction. Patients of the control group received only drug therapy. All patients underwent ophthalmic (visometry, tonometry, perimetry) and osteopathic examination twice: before the treatment and after 3 months.Results. For patients with primary open-angle IIA non-operated glaucoma, regional (most often regions of the head, neck, dura mater) and local (abdominal diaphragm, iliac bones, hip and knee joints) somatic dysfunctions were the most typical. In the main group a statistically significant decrease in the frequency and severity of dysfunctions at all levels was stated. Also, in patients receiving osteopathic correction, a significant decrease in the level of intraocular pressure and perimetric indices was noted. In patients of the control group, no reliable changes in these indicators were obtained.Conclusion. The results obtained indicate that osteopathic correction is clinically effective in the complex treatment of patients with primary open-angle II A glaucoma.

Experience of using time-lapse microscopy in IVF and ICSI programs

2020 ◽  
pp. 47-50
Author(s):  
N. V. Saraeva ◽  
N. V. Spiridonova ◽  
M. T. Tugushev ◽  
O. V. Shurygina ◽  
A. I. Sinitsyna
Keyword(s):  
Pregnancy Rate ◽  
Embryo Transfer ◽  
Selection Procedure ◽  
Time Lapse ◽  
Single Embryo Transfer ◽  
Main Group ◽  
Clinical Pregnancy ◽  
Control Group ◽  
Time Lapse Microscopy

In order to increase the pregnancy rate in the assisted reproductive technology, the selection of one embryo with the highest implantation potential it is very important. Time-lapse microscopy (TLM) is a tool for selecting quality embryos for transfer. This study aimed to assess the benefits of single-embryo transfer of autologous oocytes performed on day 5 of embryo incubation in a TLM-equipped system in IVF and ICSI programs. Single-embryo transfer following incubation in a TLM-equipped incubator was performed in 282 patients, who formed the main group; the control group consisted of 461 patients undergoing single-embryo transfer following a traditional culture and embryo selection procedure. We assessed the quality of transferred embryos, the rates of clinical pregnancy and delivery. The groups did not differ in the ratio of IVF and ICSI cycles, average age, and infertility factor. The proportion of excellent quality embryos for transfer was 77.0% in the main group and 65.1% in the control group (p = 0.001). In the subgroup with receiving eight and less oocytes we noted the tendency of receiving more quality embryos in the main group (р = 0.052). In the subgroup of nine and more oocytes the quality of the transferred embryos did not differ between two groups. The clinical pregnancy rate was 60.2% in the main group and 52.9% in the control group (p = 0.057). The delivery rate was 45.0% in the main group and 39.9% in the control group (p > 0.050).

Sign in / Sign up

Export Citation Format

Share Document