scholarly journals Informative Indicators of 14-15 Years’ Age Boys’ Motor Fitness

2017 ◽  
Vol 17 (2) ◽  
pp. 86-97 ◽  
Author(s):  
Olga Ivashchenko ◽  
Olena Kapkan ◽  
Oleg Khudolii ◽  
Tetiana Yermakova
Keyword(s):  
Statistical Analysis ◽  
Discriminant Analysis ◽  
Body Mass ◽  
Physical Condition ◽  
Relative Strength ◽  
Motor Functioning ◽  
Motor Fitness ◽  
Group Control ◽  
Static Power

The purpose of the research is to determine informative indicators for in-group and intra-group control of 14 and 15 years’ age boys’ motor fitness.  Material & methods: in the research 112 schoolchildren participated: 14 years’ age (n=44), 15 year’ age (n=68). The materials of the research were processed in program of statistical analysis IBM SPSS 20. Factorial analysis as well as discriminant were fulfilled.  Results of the research: it was found that for control of motor fitness the most informative indicators were indicators of static power endurance and physical condition. It was also found that results of test “keeping angle on parallel bars” made the highest contribution in function’s change and the closest correlation with the function.  Conclusions: 14 years’ boys have better indicators of static and relative strength than 15 years’ age boys. It points at the fact that in 15 years’ age sharp changes of body mass, weight as well as reduction of motor functioning are the reasons of lagging behind. The received data witness that factorial and discriminant analysis can be methodological base for determination of tests’ in-group and intra-group informational potential. For comprehensive control of motor fitness  test “Keeping of angle on parallel bars” can be recommended.  

scholarly journals Gender-Related Peculiarities of Motor Fitness of 8-Year-Old Schoolchildren

2020 ◽  
Vol 1 (2) ◽  
pp. 75-81
Author(s):  
Sergii Iermakov ◽  
Olha Ivashchenko ◽  
Oleksandr Khomiakov
Keyword(s):  
Discriminant Analysis ◽  
Learning Process ◽  
Supine Position ◽  
Probabilistic Approach ◽  
Relative Strength ◽  
The Body ◽  
Movement Coordination ◽  
Motor Fitness ◽  
Development Level ◽  
Study Participants

The purpose of the study was to identify gender-related peculiarities of motor fitness of 8-year-old schoolchildren. Materials and methods. The study participants were 82 8-year-old schoolchildren (girls – 40, boys – 42). The children and their parents were informed about all the features of the study and gave their consent to participate in the experiment. The study used the following research methods: analysis of scientific and methodological literature, pedagogical observations, testing of motor fitness, probabilistic approach to assessing the learning process, methods of mathematical statistics. In the experiment, the study controlled the level of proficiency in the following exercises: shoulderstand, bridge from supine position, one leg swing upward circle. Results. In the girls and boys, the differences in the development level of movement coordination of individual parts of the body and vestibular stability are not statistically significant. The 8-year-old boys have a statistically significantly higher level of development of strength, speed strength, speed, endurance and a higher level of proficiency in acrobatic and gymnastic exercises than girls. Conclusions. A canonical discriminant function can be used to classify the gender-related peculiarities of motor fitness of 8-year-old schoolchildren. A discriminant analysis revealed the indicators that have the greatest weight in assessing the gender-related peculiarities of motor fitness of 8-year-old schoolchildren. They include the level of relative strength of shoulder flexors, speed strength, endurance, and the level of proficiency in shoulderstand.

scholarly journals DEAF AND HEARING BASKETBALL NATIONAL TEAMS AT THE 2019 WORLD CHAMPIONSHIPS: DISCRIMINANT ANALYSIS OF GAME-RELATED STATISTICS BETWEEN THE WINNING AND THE DEFEATED

2021 ◽  
Author(s):  
Adam Michał Szulc ◽  
Elżbieta Sandurska
Keyword(s):  
Statistical Analysis ◽  
Discriminant Analysis ◽  
Situational Factors ◽  
Literature Analysis ◽  
World Cup ◽  
Basketball Players ◽  
Situational Variables ◽  
Standard Deviations ◽  
Almost All

The aim of the study was to identify the situational factors of a game which (a) might affect the victory or defeat in the game; (b) were common for matches played in a tournament for the hearing or deaf, including matches won or lost. The analysis included 37 matches of national deaf teams (5th World Deaf Basketball Championships, Poland) and 92 matches of national hearing teams (18th Basketball World Cup, China). During both tournaments, the matches played were divided into won and lost. We also presented analyses concerning 31 game situational variables related to the performance of national basketball teams at both events. All situational variables were subject to statistical analysis, including calculation of their means and standard deviations, and determination of minimum and maximum. Discriminant analysis was performed, too. The analyses showed no statistically significant differences in almost all game aspects between matches won by deaf and hearing basketball players. Statistically significant differences in situational variables were observed between matches won during the 5th World Deaf Basketball Championships and matches lost during the 18th Basketball World Cup. The discriminant analysis allowed to determine the situational variables that affected the winning or losing of a game: missed shots for 2 or 3 points, free throws, defensive and offensive rebounds, as well as assists, steals, and turnovers. A classification matrix indicated 21 results of direct match competitions achieved by deaf teams (winning and losing), which allowed to qualify these teams as hearing ones in terms of the values of game situational variables. Literature analysis revealed lack of scientific reports on deaf sport.

PENENTUAN KRITERIA PENILAIAN KESAN JUMLAH LEUKOSIT PADA PEMERIKSAAN APUSAN DARAH TEPI

2018 ◽  
Vol 3 (2) ◽  
pp. 52-61
Author(s):  
Dzikra Arwie ◽  
Islawati
Keyword(s):  
Data Analysis ◽  
Statistical Analysis ◽  
Blood Cells ◽  
Blood Smear ◽  
White Blood Cells ◽  
Peripheral Blood Smear ◽  
Field Of View ◽  
Laboratory Observation ◽  
Number Of Cells

Leukocytes or white blood cells have a characteristic characteristic of different cells. Determination of the impression of the number of leukocytes is determined in the number of cells in the field of view. While the number of viewable field cells expressed is still quite varied. The purpose of this study was to determine the number of leukocytes in the field of view and expressed the impression of a sufficient amount. This research was conducted at the Laboratory of Health Analyst Department Panrita Husada Bulukumba on 9 April 2017 to 14 July 2017. This type of research is a laboratory observation that aims to determine the criteria for assessing the impression of the number of leukocytes on a peripheral blood smear. Data analysis using statistical analysis is the average and standard deviations to determine the impression of the number of leukocytes and use 3 inspection zones. The results of this study obtained results in zone IV the number of leukocyte impressions said to be sufficient was 7-10, in zone V the number of leukocyte impressions said to be sufficient was 4-9, and in zone VI the number of leukocyte impressions said to be sufficient was 3-8.  

A Standard Primary Toxicity Bioassay Using Daphnia Magna as a Test Species

1977 ◽  
Vol 12 (1) ◽  
pp. 27-50 ◽  
Author(s):  
L.A. Behie ◽  
J.E. Zajic ◽  
D. Berk ◽  
R.J.P. Brouzes ◽  
V.A. Naish
Keyword(s):  
Statistical Analysis ◽  
Daphnia Magna ◽  
Biological Indicator ◽  
Pulp And Paper ◽  
Toxicity Bioassay ◽  
Simple Method ◽  
Test Species ◽  
Test Organisms ◽  
Dilution Water

Abstract Although Daphnia magna have been widely used in the determination of the toxicity of various substances, there are no reports in the literature that describe a rigorous bioassay method using this organism as a test species. The test described herein involves the standariza-tion of various important aspects of the method such as the age of the test organisms, and the dilution water used for the preparation of the various toxicant concentrations. Also described is a simple method for the statistical analysis of the results. The sensitivity of the proposed bioassay is demonstrated by determining the toxicity of various pulp and paper effluents. Finally, extensive bioassays were carried out simultaneously with rainbow trout and Daphnia magna indicating that Daphnia are as good a biological indicator of acute toxicity as fish.

scholarly journals Nuclear Magnetic Resonance Metabolomics with Double Pulsed-Field-Gradient Echo and Automatized Solvent Suppression Spectroscopy for Multivariate Data Matrix Applied in Novel Wine and Juice Discriminant Analysis

Molecules ◽  
2021 ◽  
Vol 26 (14) ◽  
pp. 4146
Author(s):  
José Enrique Herbert-Pucheta ◽  
José Daniel Lozada-Ramírez ◽  
Ana E. Ortega-Regules ◽  
Luis Ricardo Hernández ◽  
Cecilia Anaya de Parrodi
Keyword(s):  
Statistical Analysis ◽  
Discriminant Analysis ◽  
Field Gradient ◽  
Multivariate Statistical Analysis ◽  
Data Matrix ◽  
Cabernet Sauvignon ◽  
Gradient Echo ◽  
Multivariate Statistical ◽  
Orthogonal Projections ◽  
Pulsed Field

The quality of foods has led researchers to use various analytical methods to determine the amounts of principal food constituents; some of them are the NMR techniques with a multivariate statistical analysis (NMR-MSA). The present work introduces a set of NMR-MSA novelties. First, the use of a double pulsed-field-gradient echo (DPFGE) experiment with a refocusing band-selective uniform response pure-phase selective pulse for the selective excitation of a 5–10-ppm range of wine samples reveals novel broad 1H resonances. Second, an NMR-MSA foodomics approach to discriminate between wine samples produced from the same Cabernet Sauvignon variety fermented with different yeast strains proposed for large-scale alcohol reductions. Third a comparative study between a nonsupervised Principal Component Analysis (PCA), supervised standard partial (PLS-DA), and sparse (sPLS-DA) least squares discriminant analysis, as well as orthogonal projections to a latent structures discriminant analysis (OPLS-DA), for obtaining holistic fingerprints. The MSA discriminated between different Cabernet Sauvignon fermentation schemes and juice varieties (apple, apricot, and orange) or juice authentications (puree, nectar, concentrated, and commercial juice fruit drinks). The new pulse sequence DPFGE demonstrated an enhanced sensitivity in the aromatic zone of wine samples, allowing a better application of different unsupervised and supervised multivariate statistical analysis approaches.

Cryoscopy of Milk: Effect of Variations in the Method

1966 ◽  
Vol 49 (3) ◽  
pp. 511-515 ◽  
Author(s):  
R W Henningson
Keyword(s):  
Statistical Analysis ◽  
Sample Size ◽  
Freezing Point ◽  
Collaborative Study ◽  
Sample Temperature ◽  
Milk Samples ◽  
Two Samples ◽  
Temperature Rate

Abstract Bath level, sample temperature, rate of stirring, degree of supercooling, sample size, sample isolation, and refreezing of the sample were the variables in the thermistor cryoscopic method for the determination of the freezing point value of milk chosen for study. Freezing point values were determined for two samples of milk and two secondary salt standards utilizing eight combinations of the seven variables in two test patterns. The freezing point value of the salt standards ranged from –0.413 to –0.433°C and from –0.431 to –0.642°C. The freezing point values of the milk samples ranged from –0.502 to –0.544°C and from –0.518 to –0.550°C. Statistical analysis of the data showed that sample isolation was a poor procedure and that other variables produced changes in the freezing point value ranging from 0.001 to 0.011°C. It is recommended that specific directions be instituted for the thermistor cryoscopic method, 15.040–15.041, and that the method be subjected to a collaborative study.

scholarly journals Right choice of a method for determination of cut-off values: A statistical tool for a diagnostic test

2014 ◽  
Vol 5 (3) ◽  
pp. 30-34 ◽  
Author(s):  
Balkishan Sharma ◽  
Ravikant Jain
Keyword(s):  
Logistic Regression ◽  
Discriminant Analysis ◽  
Diagnostic Test ◽  
Roc Curve ◽  
Traditional Method ◽  
Statistical Technique ◽  
Curve Analysis ◽  
Operating Characteristics ◽  
Roc Curve Analysis

Objective: The clinical diagnostic tests are generally used to identify the presence of a disease. The cutoff value of a diagnostic test should be chosen to maximize the advantage that accrues from testing a population of human and others. When a diagnostic test is to be used in a clinical condition, there may be an opportunity to improve the test by changing the cutoff value. To enhance the accuracy of diagnosis is to develop new tests by using a proper statistical technique with optimum sensitivity and specificity. Method: Mean±2SD method, Logistic Regression Analysis, Receivers Operating Characteristics (ROC) curve analysis and Discriminant Analysis (DA) have been discussed with their respective applications. Results: The study highlighted some important methods to determine the cutoff points for a diagnostic test. The traditional method is to identify the cut-off values is Mean±2SD method. Logistic Regression Analysis, Receivers Operating Characteristics (ROC) curve analysis and Discriminant Analysis (DA) have been proved to be beneficial statistical tools for determination of cut-off points.Conclusion: There may be an opportunity to improve the test by changing the cut-off value with the help of a correctly identified statistical technique in a clinical condition when a diagnostic test is to be used. The traditional method is to identify the cut-off values is Mean ± 2SD method. It was evidenced in certain conditions that logistic regression is found to be a good predictor and the validity of the same can be confirmed by identifying the area under the ROC curve. Abbreviations: ROC-Receiver operating characteristics and DA-Discriminant Analysis. Asian Journal of Medical Science, Volume-5(3) 2014: 30-34 http://dx.doi.org/10.3126/ajms.v5i3.9296      

Determination of sex from humerus: discriminant analysis

2013 ◽  
Vol 45 (2) ◽  
pp. 147-152 ◽  
Author(s):  
Gargi Soni ◽  
Usha Dhall ◽  
Sudha Chhabra
Keyword(s):  
Discriminant Analysis

Affluent and Nonaffluent Consumers′ Needs: Attitudes, and Information‐Seeking Behaviour in the Financial Services Marketplace

1990 ◽  
Vol 4 (4) ◽  
pp. 41-54 ◽  
Author(s):  
Edward G. Thomas ◽  
S.R. Rao ◽  
Rajshekhar G. Javalgi
Keyword(s):  
Statistical Analysis ◽  
Discriminant Analysis ◽  
Survey Data ◽  
Financial Institutions ◽  
Financial Services ◽  
Information Seeking ◽  
Financial Services Industry ◽  
Market Segments ◽  
Information Seeking Behaviour ◽  
Services Industry

Considers the proliferation of products and services in the financial services industry aimed at different market segments. Highlights the affluent and nonaffluent market segments. Employs statistical analysis of survey data to evaluate the financial services needs, attitudes, and information‐seeking behaviour of these segments. Suggests implications for the managers of financial institutions, based on the study findings. Includes appendices on methodology and discriminant analysis used in the study.

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