scholarly journals Predictive value of kinematic indicators for shot put result and selection of novice athletes

2021 ◽  
Vol 7 (4) ◽  
pp. 35-45
Author(s):  
Hikmat Almadhkhori ◽  
Ratko Pavlović ◽  
Iryna Skrypchenko ◽  
Bouchareb Rafahiya ◽  
R. Ram Mohan Singh
Keyword(s):  
High Reliability ◽  
Correlation Coefficients ◽  
Regression Equation ◽  
Multiple Regression Equation ◽  
Young Athletes ◽  
Important Indicator ◽  
Kinematic Indicators ◽  
Swing Speed ◽  
Shot Put ◽  
Selection Of

Purpose: to determine the most significant kinematic indicators in the sports selection of beginner shot putters. Material and Methods: This study was carried out on a sample of 9 students at the fourth stage of the competition in Division 1, which took place in the 2017/2018 academic year at the Faculty of Physical Education of Maysan University. The following kinematic (biomechanical) parameters were analyzed: the angle of release of the nucleus, the velocity of release, the height of the point of ejection of the nucleus and the speed of swing. The correlation coefficients were determined between the kinematic indicators and the result in the shot put, as well as the regression equation for the dependence of the result in the shot put on the knematic indicators. The data obtained in the study were presented in the form of the arithmetic mean, standard deviation, median, skewness coefficient, Pearson's correlation coefficient, analysis of variance and linear regression, which included the contribution coefficients of each analyzed indicator, standard error, reliability of the regression equation as a whole, and reliability of the coefficients contribution to the shot put result of each kinematic exponent. Results. It has been shown that the swing speed has the greatest influence on the result in the shot put among beginner athletes. The swing speed, shot angle, shot speed and shot height have significant relationships with the shot put result. The multiple regression equation for the dependence of the shot put result on the swing speed, shot angle, shot height and shot point turned out to be reliable in general. However, only the swing speed has a reliable coefficient of the regression equation. The shot angle tends to be the determining factor in the shot put result. The release rate and the height of the release point have significant correlations with the shot put result, although in the regression equation they have unreliable indicators of influence on the shot put result. Conclusions. When teaching beginner shot putters, the greatest attention should be paid to the pushing swing technique, namely the swing speed. The second most important indicator is the angle of the shot put, it is recommended to use the basic prediction equation, which determines the expected results in the selection of young athletes in shot put, with high reliability of the results obtained. These characteristics are recommended to be used for evaluating young athletes, as well as in the process of training and preparing athletes for competitions.  

The Use of Econometric Analysis in Forecasting Macroeconomic Processes

2021 ◽  
pp. 28-33
Author(s):  
Aleksandr Kalyanov ◽  
Andrey Shishkin
Keyword(s):  
Multiple Regression ◽  
Econometric Model ◽  
Econometric Analysis ◽  
Regression Equation ◽  
Multiple Regression Equation ◽  
Linear Multiple Regression ◽  
Consumer Prices ◽  
Macroeconomic Indicators ◽  
Primary Impact ◽  
Selection Of

The article discusses the issues related to the influence of various price categories of goods on the level of inflation. The possibility of using econometric analysis for predictive purposes is considered. An econometric model of multiple regression of the influence of consumer prices on the level of inflation is formed. A linear multiple regression equation is constructed. The selection of factors for the construction of an econometric model is made. The main groups of goods are identified, the prices of which form the level of inflation and can have a primary impact. The viability of the model and the possibility of forecasting macroeconomic indicators based on econometric analysis are proved.

IMPROVEMENT OF SPRING DURUM WHEAT SELECTION METHODOLOGIES UNDER CLIMATE CHANGE CONDITIONS

1970 ◽  
pp. 33-36
Author(s):  
А. I. Grabovets ◽  
V. P. Kadushkina ◽  
S. А. Kovalenko
Keyword(s):  
Grain Yield ◽  
Durum Wheat ◽  
Correlation Coefficient ◽  
Harvest Index ◽  
Unit Area ◽  
Correlation Coefficients ◽  
Chemical Mutagenesis ◽  
Main Method ◽  
The Relationship ◽  
Selection Of

With the growing aridity of the climate on the Don, it became necessary to improve the methodology for conducting the  breeding of spring durum wheat. The main method of obtaining the source material remains intraspecific step hybridization. Crossings were performed between genetically distant forms, differing in origin and required traits and properties. The use of chemical mutagenesis was a productive way to change the heredity of genotypes in terms of drought tolerance. When breeding for productivity, both in dry years of research and in favorable years, the most objective markers were identified — the size of the aerial mass, the mass of grain per plant, spike, and harvest index. The magnitude of the correlation coefficients between the yield per unit area and the elements of its structure is established. It was most closely associated with them in dry years, while in wet years it decreased. Power the correlation of the characteristics of the pair - the grain yield per square meter - the aboveground biomass averaged r = 0.73, and in dry years it was higher (0.91) than in favorable ones (0.61 - 0.70) , between the harvest and the harvest index - r = 0.81 (on average). In dry years, the correlation coefficient increased to 0.92. Research data confirms the greatest importance of the mass of grain from one ear and the plant in the formation of grain yield per unit area in both dry and wet years. In dry years, the correlation coefficient between yield and grain mass per plant was on average r = 0.80; in favorable years, r = 0.69. The relationship between yield and grain mass from the ear was greater — r = 0.84 and r = 0.82, respectively. Consequently, the breeding significance of the aboveground mass and the productivity of the ear, as a criterion for the selection of the crop, especially increases in the dry years. They were basic in the selection.

scholarly journals Is there a relationship between the overhead press and split jerk maximum performance? Influence of sex

2021 ◽  
pp. 174795412110204
Author(s):  
Marcos A Soriano ◽  
G Gregory Haff ◽  
Paul Comfort ◽  
Francisco J Amaro-Gahete ◽  
Antonio Torres-González ◽  
...  
Keyword(s):  
Confidence Intervals ◽  
Body Mass ◽  
Upper Limb ◽  
High Reliability ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Training Experience ◽  
Maximum Performance ◽  
Repetition Maximum ◽  
Intraclass Correlation Coefficients

The aims of this study were to (I) determine the differences and relationship between the overhead press and split jerk performance in athletes involved in weightlifting training, and (II) explore the magnitude of these differences in one-repetition maximum (1RM) performances between sexes. Sixty-one men (age: 30.4 ± 6.7 years; height: 1.8 ± 0.5 m; body mass 82.5 ± 8.5 kg; weightlifting training experience: 3.7 ± 3.5 yrs) and 21 women (age: 29.5 ± 5.2 yrs; height: 1.7 ± 0.5 m; body mass: 62.6 ± 5.7 kg; weightlifting training experience: 3.0 ± 1.5 yrs) participated. The 1RM performance of the overhead press and split jerk were assessed for all participants, with the overhead press assessed on two occasions to determine between-session reliability. The intraclass correlation coefficients (ICC) and 95% confidence intervals showed a high reliability for the overhead press ICC = 0.98 (0.97 – 0.99). A very strong correlation and significant differences were found between the overhead press and split jerk 1RM performances for all participants (r = 0.90 [0.93 – 0.85], 60.2 ± 18.3 kg, 95.7 ± 29.3 kg, p ≤ 0.001). Men demonstrated stronger correlations between the overhead press and split jerk 1RM performances (r = 0.83 [0.73-0.90], p ≤ 0.001) compared with women (r = 0.56 [0.17-0.80], p = 0.008). These results provide evidence that 1RM performance of the overhead press and split jerk performance are highly related, highlighting the importance of upper-limb strength in the split jerk maximum performance.

SOME ASPECTS OF THE CONSTRUCTION OF THE THEMATIC TESTS FOR THE DIAGNOSIS OF COGNITIVE LEARNING OUTCOMES CHEMISTRY ENGINEERING STUDENTS

2015 ◽  
Author(s):  
Liudmila Gorbunova ◽  
Keyword(s):  
Key Words ◽  
Learning Outcomes ◽  
Diagnostic Test ◽  
Engineering Students ◽  
High Reliability ◽  
Cognitive Learning ◽  
Reliability And Validity ◽  
Educational Measurement ◽  
Selection Of ◽  
Cognitive Learning Outcomes

The article discusses the procedure of the preparation of test materials for the diagnosis of cognitive learning outcomes in chemistry. It is shown that the use of the thesaurus approach to the selection of the content and methods of mathematical statistics provides a test with high reliability and validity coefficients. Key words: diagnostic test, chemistry, educational measurement.

scholarly journals THE PROGRAM MODULE OF CALCULATION OF PHYSICAL WEAR OF BUILDINGS BASED ON EXPERIMENTAL ASSESSMENT OF THEIR DAMAGES

2019 ◽  
pp. 17-25
Author(s):  
O. Kuripta ◽  
Y. Vorob'eva ◽  
O. Minakova
Keyword(s):  
Programming System ◽  
Software Module ◽  
Program Module ◽  
Important Indicator ◽  
Reference Information ◽  
Module Selection ◽  
Wear And Tear ◽  
Microsoft Office ◽  
Net Framework ◽  
Selection Of

The article raises the issue of current interest of automation the process of calculation and evaluation of physical buildings deterioration. This is the most important indicator that characterizes the physical condition of the building in quantitative terms and is of interest to realtors and management companies. Calculation and assessment of physical wear and tear of buildings is a difficult and time-consuming task and is currently carried out manually or by means of Microsoft Office Excel. In this regard, the software module is proposed and developed that allows to calculate and evaluate the physical wear of buildings according to VSN 53-86 (p), which reduces the complexity and time of assessing physical wear. The software module is developed using MongoDB Server, IDE Studio 3T, Microsoft Visual Studio programming system 2017.NET Framework 4.6.1, WPF technologies, in C#, Net, using the MVVM architectural pattern. The user is provided with the following functionality when working with the software module: selection of the studied system elements, reference information of signs of their wear, automatic calculation of physical wear and reporting on the received assessment. The program module is tested at the Department of housing and communal services of the Voronezh state technical University.

scholarly journals Research on China's Population Structure in the New Situation

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
Jingxuan Cui ◽  
Mengshuai Yin ◽  
Zerong Liu
Keyword(s):  
Population Structure ◽  
Rural Population ◽  
Regression Equation ◽  
Multiple Regression Equation ◽  
Female Ratio ◽  
Men And Women ◽  
Child Policy ◽  
Dynamic Perspective ◽  
The Difference ◽  
The Impact

To analyze the impact of the “two-child policy” on the population size and structure, first of all, the birth rate, the ratio of men and women, and the ratio of urban and rural population are used as indicators. Before and after the dispersion, then establish a PDE model, and compare it with the population predicted by the gray forecast to analyze the mitigation of the ageing of the second child policy; continue to analyze the impact of changes in the population structure on the national economy, and select the male and female ratio and the labor population The urban-rural population ratio is used as an index to establish a multiple regression equation for analysis, and a related regression equation is obtained. Finally, the future marriage problem is analyzed, considering only the difference in the number of men and women entering the marriageable period at the same time. The difference in the number of marriageable populations is analyzed through the difference in the number of men and women born at birth, focusing on a dynamic perspective.

A fully automated method for late ventricular diastole frame selection in post-dive echocardiography without ECG gating

2021 ◽  
pp. 73-80
Author(s):  
Eric Markley ◽  
◽  
David Q. Le ◽  
Peter Germonpré ◽  
Costantino Balestra ◽  
...  
Keyword(s):  
Field Experiments ◽  
High Reliability ◽  
Rater Bias ◽  
Algorithm Performance ◽  
Frame Selection ◽  
Automated Method ◽  
Significant Difference ◽  
Computer Automation ◽  
Decompression Stress ◽  
Selection Of

Venous gas emboli (VGE) are often quantified as a marker of decompression stress on echocardiograms. Bubble-counting has been proposed as an easy to learn method, but remains time-consuming, rendering large dataset analysis impractical. Computer automation of VGE counting following this method has therefore been suggested as a means to eliminate rater bias and save time. A necessary step for this automation relies on the selection of a frame during late ventricular diastole (LVD) for each cardiac cycle of the recording. Since electrocardiograms (ECG) are not always recorded in field experiments, here we propose a fully automated method for LVD frame selection based on regional intensity minimization. The algorithm is tested on 20 previously acquired echocardiography recordings (from the original bubble-counting publication), half of which were acquired at rest (Rest) and the other half after leg flexions (Flex). From the 7,140 frames analyzed, sensitivity was found to be 0.913 [95% CI: 0.875-0.940] and specificity 0.997 [95% CI: 0.996-0.998]. The method’s performance is also compared to that of random chance selection and found to perform significantly better (p<0.0001). No trend in algorithm performance was found with respect to VGE counts, and no significant difference was found between Flex and Rest (p>0.05). In conclusion, full automation of LVD frame selection for the purpose of bubble counting in post-dive echocardiography has been established with excellent accuracy, although we caution that high quality acquisitions remain paramount in retaining high reliability.

Cu electroplating chemistry and process enabling rapid TSV filling with long bath life

2015 ◽  
Vol 2015 (DPC) ◽  
pp. 000510-000529
Author(s):  
Matthew A Thorseth ◽  
Luis Gomez ◽  
Mark Scalisi ◽  
Bryan Lieb ◽  
Mark Lefebvre ◽  
...  
Keyword(s):  
High Reliability ◽  
Continuous Operation ◽  
Organic Additives ◽  
Plating Bath ◽  
Control Techniques ◽  
Hybrid Memory ◽  
Cu Electroplating ◽  
Cost Reductions ◽  
Bath Stability ◽  
Selection Of

Through-silicon via (TSV) filling with electroplated Cu with short plating times and long bath life remains a challenge within the semiconductor and electronic packaging industries. TSVs are the primary enabler for advanced 3D architectures such as hybrid memory cubes, wide IO DDR memory, as well as chip interconnections through interposers. The TSV needs to be completely filled with void-free Cu for high reliability. Organic additives are used to achieve a bottom-up, superconformal filling profile, required for void-free filling in high aspect ratio vias. The development and selection of the proper organic additives, optimized plating process, and implementation of advanced bath control techniques enable short TSV electroplating times, while also allowing for robust operation and high bath stability. Dow's INTERLINK™ 9200 Cu TSV plating bath with the Applied Materials TSPlus plating system allows 10×100 μm vias to be filled in less than 1 hour and 5×50 μm vias filled in under 20 minutes while having a bath life greater than 40 A hr L-1 in continuous operation. This combination also exhibits low overburden for stress management, CMP cost reductions, and high reliability.

Quality of the ICD-11 Beta Draft from the German Perspective: Evaluation Based on the Alphabet of ICD-10-GM 2017

2018 ◽  
Vol 57 (04) ◽  
pp. 168-176
Author(s):  
Jürgen Stausberg
Keyword(s):  
Medical Informatics ◽  
Field Test ◽  
High Reliability ◽  
Post Processing ◽  
Automatic Selection ◽  
Starting Point ◽  
Icd 10 ◽  
German Association ◽  
Selection Of

Summary Objectives: The German Association for Medical Informatics, Biometry and Epidemiology implemented a field test for the ICD-11 Beta Draft. Aim was to analyze completeness and appropriateness of the ICD-11 Beta Draft in its entire breadth. Methods: Starting point was the synonym thesaurus (“Alphabet”) of the German modification of ICD-10. The Alphabet included a list of diagnoses terms that supports the coding of diagnoses with ICD-10. A sample of 60,328 diagnosis terms was drawn to be mapped to the ICD-11 Beta Draft. A subsample of 13,975 diagnosis terms was prepared for assessing reliability. First, the coders had to assign a diagnosis term from the sample to an appropriate English one. This included the automatic selection of the respective code from the ICD-11 Beta Draft. Secondly, the coders had to answer questions regarding completeness, appropriateness, and other issues. Results: Finally, 49,184 results from 36 coders were available for the analysis. Problems with completeness were indicated in 4.7% of the results, problems with appropriateness in 5.3%. On the level of chapters, Cohen’s kappa reached grade “fair” at a maximum. The coders agreed in 31.4% of the terms. Conclusions: Problems with the ICD-11 Beta Draft appeared to be moderate. Completeness was high, reliability was low as it is known for ICD-10. Concerns with the structure of the ICD-11 Beta Draft were noted, e. g. for neoplasms. A post processing of the ICD-11 Beta Draft seems to be sufficient with regard to the content. Methodologically, a thorough review of the structure might be advisable.

Sign in / Sign up

Export Citation Format

Share Document