scholarly journals METHODOLOGY OF STATISTICAL PROCESSING OF KNOWLEDGE TESTING RESULTS

2021 ◽  
Vol 1 (1) ◽  
pp. 363-364
Author(s):  
Aleksey Bal'chugov
Keyword(s):  
Statistical Processing ◽  
Critical Value ◽  
Test Results

It is proposed to use a criterion similar to Cochran's criterion for statistical pro cessing of test results. It is shown that the critical value of the Cochran criterion for a group of 4 people who have been tested on 5 topics is approximately 0.2.

Effect of Lubricant Viscosity on Gearing Contact Fatigue Life

2012 ◽  
Vol 190-191 ◽  
pp. 1295-1301 ◽  
Author(s):  
Xiu Mei Qi ◽  
Chuang Kuan Gao ◽  
Zeng Qiang Zhang
Keyword(s):  
Fatigue Life ◽  
Contact Fatigue ◽  
Critical Value ◽  
Fatigue Tests ◽  
Numerical Calculations ◽  
Quantitative Relation ◽  
Test Results ◽  
Contact Fatigue Life ◽  
Lubricant Viscosity ◽  
Film Lubrication

The paper considers the effect of lubricant viscosity, ν, on the contact fatigue life, N, in gearing applications. More than 40 sets of the thermal non-Newtonian EHL numerical calculations and six sets of disc fatigue tests under the conditions ranging from the mixed to full film lubrication are used. The results show that for improving gearing fatigue life it is generally useful to increase lubricant viscosity. But it is not simply the case that the higher the lubricant viscosity, the better. When lubricant viscosity, ν, is less than a critical value, νcr, a quantitative relation of is seen in the test results; When ν > νcr, however, increasing lubricant viscosity is found to reduce the fatigue life. Based on this result, the paper raises questions concerning the accuracy of the lubrication factor recommended by ISO/6336:1996.

scholarly journals CORRECTION OF HYPODINAMY AS A FACTOR OF THE RISK OF OBESITY DEVELOPMENT IN FIRE-RESCUERS

2018 ◽  
Vol 25 (3) ◽  
pp. 40-45
Author(s):  
E. V. BURDYUKOVA ◽  
A. N. ARKHANGELSKAYA ◽  
S. N. ALEKSEENKO ◽  
I. A. YAKIREVICH ◽  
E. A. DMITRIEVA ◽  
...  
Keyword(s):  
High Efficiency ◽  
Statistical Processing ◽  
Main Group ◽  
The Body ◽  
Control Group ◽  
Test Results ◽  
Food Label ◽  
Development Indicators ◽  
History Of ◽  
In Fire

Aim. To evaluate the effectiveness of the developed special sports complex in the prevention of hypodynamia and obesity among firefighters-rescuers.Materials and methods. A survey of 490 men with no history of chronic infectious and non-infectious diseases aged 20-59 was conducted. 328 people were the main group, 162 people were the control group. The baseline data included anthropometric development indicators, bioimpedance test results, the extraction of biochemical blood test results; the body mass index (BMI) and the ratio of waist and hip circumference were determined. A questionnaire was conducted to identify hypodynamia (according to the IPAQ questionnaire) and the nutrition structure (according to the questionnaire on the food label literacy questionnaire, past). Both questionnaires were adapted to the Russian Federation. Statistica for Windows 8.0 was used for statistical processing. We used a comparison of the means of the Student method. To compare the values expressed in percent, the method of inverse trigonometric Fisher transformations was used.Results. We have developed and proposed for firefighters-rescuers, included in the main group, special sports complexes, which were used for 6 months. These complexes represent additional physical training by the developed method. There are two of them: one with an emphasis on the prevention and rehabilitation of people with osteochondrosis of the lumbar spine, and the other for cervical and thoracic localization, including with a syndrome of shoulder-scapular periarthritis.Classes were held 3 times a week, the duration of 1 session was 45-50 minutes. The choice of the complex was carried out at the request of firefighters-rescuers. The first complex was selected by 52 people. Based on the results of the study, against the background of the use of sports complexes, there was a 2-fold decrease in the incidence of obesity. Such a high efficiency is due to the fact that obesity of the I degree prevailed among the firefighters-rescuers. In addition, the frequency of occurrence of dyslipidemia, hyperglycemia, and hypodynamia decreased.Conclusion. The use of this sports complex can reduce the risk factors for development of disability among rescue firefighters by preventing hypodynamia and reducing the incidence of hyperglycemia and dyslipidemia, as factors in the development of obesity.

PRODUKTIVITAS PENULIS ARTIKEL ILMIAH BIDANG ILMU INFORMASI DAN PERPUSTAKAAN PADA JURNAL TERAKREDITASI PERINGKAT SINTA 2, 3 DAN 4 TAHUN 2015-2019

2021 ◽  
Vol 23 (2) ◽  
pp. 117-128
Author(s):  
Sri Junandi ◽  
Dwiyantoro Dwiyantoro
Keyword(s):  
Bibliometric Analysis ◽  
Information Science ◽  
Science And Technology ◽  
Critical Value ◽  
Library And Information Science ◽  
Research Approach ◽  
Scientific Journals ◽  
Test Results ◽  
Productivity Pattern

There are 15 scientific journals in the field of Library and Information Science (LIS) accredited and indexed by Science and Technology Index (SINTA). The journals are divided by rating namely SINTA 2 (4 journals), SINTA 3 (4 journals) and SINTA 4 (7 journals). This study aims to determine the productivity pattern of authors in the field of LIS in 2015 - 2019 indexed in SINTA 2, 3 and 4 based on Lotka's rules. The research approach is quantitative with bibliometric analysis.  The results show that based on: (1) article published during 2015 – 2019, there were 1,806 authors with a frequency of article writing 1,061; (2) the calculation of the author's productivity pattern, shows the value of n = 0.93062 and the value of C = 0.74864; and (3) the K-S test results show that the Dmax value was greater than the critical value for SINTA 2 and 4, while for the SINTA 3 the Dmax value was smaller (0.0172) than the critical value (0.108).

Research on K Distribution in Anderson-Darling Goodness-of-Fit Test

2013 ◽  
Vol 475-476 ◽  
pp. 27-31
Author(s):  
Rui Feng ◽  
Yun Xue Liu ◽  
Wen Qiang Fan
Keyword(s):  
Goodness Of Fit ◽  
Small Sample Size ◽  
Critical Value ◽  
Complex Model ◽  
Small Sample ◽  
Radar Signal ◽  
Test Results ◽  
Goodness Of Fit Test ◽  
Radar Clutter ◽  
Anderson Darling

Identification of radar clutter model is one important step to choose optimum CFAR processor in radar signal detection, and Anderson-Darling (AD) goodness-of-fit test considered the practical and effective way under small sample size. As K distribution is a complex model providing suitable description for the amplitude of microwave sea clutter, the research on K distribution in AD test is useful but very difficult. Moment-based methods are widely used to estimate parameters of K distribution and comparison show that methods with lower moments are more accurate. Further in AD test, the influence of shape parameter on critical value (CV) for K distribution is presented. Taking it into account, tables of AD test results using varied critical value advanced in our study and fixed critical value proposed in previous research are shown based on Monte Carlo simulations.

EVALUATION OF THE EFFECTIVENESS OF ELECTRONIC EDUCATIONAL PUBLICATION USAGE IN THE LEARNING PROCESS OF OPERATORS OF ROBOTIC COMPLEXES

2020 ◽  
pp. 11-18
Author(s):  
Алексей Анатольевич Лопухов ◽  
Инесса Николаевна Исавнина ◽  
Юрий Николаевич Осипов ◽  
Владимир Иванович Ершов
Keyword(s):  
Distance Learning ◽  
Statistical Processing ◽  
Learning Systems ◽  
The Other ◽  
Social Progress ◽  
Test Results ◽  
Educational Experiment ◽  
Wilcoxon Rank Sum Test ◽  
The One ◽  
Self Learning

Рассмотрены материалы, касающиеся методологии проведения научно-педагогических экспериментов, направленных на исследование эффективности дистанционного обучения операторов робототехнических комплексов с применением электронных учебных изданий. Результаты общественного прогресса сегодня концентрируются преимущественно в информационной сфере, и востребованным становится создание систем массового непрерывного самообучения. Кроме того, необходим поиск эффективных приемов такого обучения, с одной стороны, и отсеивание приемов, приносящих вред, - с другой. В статье представлены положения, касающиеся основ организации научно-педагогического эксперимента по оценке эффективности использования электронного учебного издания. Показано, что оценка эффективности дистанционного обучения опирается на статистическую обработку результатов тестирования привлекаемых к эксперименту обучаемых непараметрическими методами с помощью двухвыборочного критерия ранговых сумм Уилкоксона. Сделаны выводы об условиях, в которых целесообразно и эффективно или нежелательно применять дистанционное обучение с использованием электронных учебных изданий. The article considers materials concerning the methodology of scientific and educational experiments aimed at investigation of effectiveness of distance learning for operators of robotic complexes using electronic educational publications. The results of social progress are now concentrated mainly in the informational sphere and the creation of mass continuous self-learning systems is becoming popular. In addition, there is necessary to search for effective methods of such training, on the one hand, and to eliminate harmful techniques, on the other. The article presents the provisions concerning the basis of scientific and educational experiment on assessing the effectiveness of application of electronic educational publication. It is shown that the evaluation of distance learning effectiveness is based on statistical processing of the test results of the students involved in the experiment using nonparametric methods by means of the two-sample Wilcoxon rank sum test. There are concluded conditions in which it is advisable and effective or undesirable to use distance learning using electronic educational publications.

Use of Concrete Wastes in Concrete Paving Blocks by Thermal-Mechanical Separation

2011 ◽  
Vol 374-377 ◽  
pp. 1303-1306
Author(s):  
Qing Bo Tian ◽  
Li Na Xu ◽  
Li Yang ◽  
Xiu Hui Wang ◽  
Hong Gao
Keyword(s):  
Compressive Strength ◽  
Active Material ◽  
Critical Value ◽  
Raw Material ◽  
Test Results ◽  
Water Addition ◽  
Steam Curing ◽  
Mechanical Separation ◽  
The Difference ◽  
Water Amount

A concrete paving blocks was produced using pretreated concrete wastes as main raw material by pressure forming and steam-curing at 70°C. The test results showed that with the increase of water addition, the paving blocks increase its strength. And as the additions of water amount reach to a critical value, the compressive strength has an adverse change and decreased. As the rise of ratio of cement and wastes, the compressive strength also increases. The difference in various ratios of cement and wastes is that the difference of water needed as the compressive strength achieved its highest value. The thermal treatment temperatures has greatly influence on the compressive strength. The increments of thermal-treated temperatures induce the active material to form and cause the particle grading more reasonable in the concrete wastes, which is benefit to the shaping of specimen and increasing of strength. The maximum compressive strength of 53.2 MPa is obtained in the mixture thermal-treated at 800°C by adjusting the water additions.

Tensile Properties of a Cast TiAl Alloy with Directional Lamellar Microstructures

2013 ◽  
Vol 652-654 ◽  
pp. 1063-1066
Author(s):  
Sheng Li ◽  
Chun Lei Zhu ◽  
Rui Cao ◽  
Ji Zhang
Keyword(s):  
Tensile Strength ◽  
Room Temperature ◽  
Tial Alloy ◽  
Lamellar Microstructure ◽  
Critical Value ◽  
Test Results ◽  
Tensile Fractures ◽  
Strength Retention ◽  
Strength And Ductility ◽  
Surface Observations

A cast TiAl alloy with directional γ-TiAl/α2-Ti3Al lamellar microstructure showed excellent strength retention at high temperatures and distinguished ambient ductility level as well. But both the ductility and strength at room temperature exhibited somewhat undulation. According to the microstructure and fracture surface observations, the negative diversification of the test results is attributed to the presence of mis-oriented lamellar colonies. The tilted lamellar colonies larger than a critical value can trigger the tensile fractures and therefore diminish the tensile strength and ductility significantly.

scholarly journals Enhancing Academic Performance in English of Bilaran National High School through a Self-Developed Mobile Quiz Game Application

2019 ◽  
Vol 1 (1) ◽  
pp. 01-06
Author(s):  
Alvin B. Punongbayan
Keyword(s):  
High School ◽  
Academic Performance ◽  
High School Students ◽  
Critical Value ◽  
Test Results ◽  
School Students ◽  
Significant Difference ◽  
Post Test ◽  
Experimental Type ◽  
Level Of Significance

This study entitled “Enhancing Academic Performance in English of Bilaran National High School through a Self-Developed Mobile Quiz Game Application” aimed to improve the academic performance in English of Bilaran National High School students through a Self-Developed Mobile Quiz Game Application. Currently, it is a problem of Bilaran National High School, especially in English, that students have problems academically such as in retention. The experimental type of research was utilized by the researcher in order to evaluate the effectiveness of the aforementioned mobile quiz game app.After the experiment, the computed t-value of 9.72 which is higher than the critical value of 1.99 set at 0.05 level of significance revealed that there was a significant difference between the post-test results of the control and experimental groups. Thus, it is found out that the Self-Developed Mobile Quiz Game Application is effective in teaching English, both grammar and literary terms. This research may serve as reference to teacher in providing innovations and reinforcement activities that would enhance the learners’ knowledge.

scholarly journals Test of “gentleman and dog” drawn by deaf and hard of hearing children

2021 ◽  
Vol 65 (2) ◽  
pp. 112-124
Author(s):  
Petra Potměšilová ◽  
◽  
Miloň Potměšil ◽  
Keyword(s):  
Hearing Impairment ◽  
Hard Of Hearing ◽  
Statistical Processing ◽  
Point Of View ◽  
Test Results ◽  
Significance Level ◽  
Iq Test ◽  
Primary Sample ◽  
Hearing Children ◽  
The Relationship

Objectives. The aim of the study was to highlight the specific features in the “gentleman and dog” drawings of children with hearing impairment who experience problems with verbalization. Sample and setting. The primary sample was 53 preschool children with hearing impairment. The design of the research was mixed. The drawings were qualitatively analysed with an enumeration of character frequency. The hypotheses were verified by a two-factor analysis and a two-sample T-test. Hypotheses. H1 There is no relation between the level of intelligence and the drawing. H2 There is no relation between the drawing and the sex of the child. H3 There is no relation between the drawing and the age of the child. H3 There is no relation between the drawing and the hearing impairment of the parents. Statistical analysis. There was a correlation between the results in the IQ test and the raw scores of the gentleman drawing at the level of 0.05 and the IQ test results and the raw scores of the dog drawing at level 0.01. The relationship between the sex, age, and level of the gentleman drawing has not been established. In the case of dog drawing, a statistically significant effect on the significance level of 0.05 only for sex (F (1, 48) = 6.15, p = 0.02) was demonstrated. In the event of the influence of the hearing impairment of parents on the child drawing, a statistically significant relationship was not supported. Results. Drawings of “gentleman and dog” of children with hearing impairment show signs of a lower developmental level by one to two years compared to hearing peers. Limits of the study. From the point of view of statistical processing requirements, the number of respondents may be considered to be limiting, but this is 80% of the selected population.

LABORATORY GEOMECHANICAL TESTS OF LIMIT SHEAR STRENGTH OF LIMESTONE FROM THE LOCATION PONIKVA NEAR GACKO

2020 ◽  
Author(s):  
Jasmin Isabegović ◽  
Hasan Okanović
Keyword(s):  
Shear Strength ◽  
Carbonate Rocks ◽  
Statistical Processing ◽  
Test Body ◽  
Test Method ◽  
Test Results ◽  
Strength Limit ◽  
The Matrix ◽  
The Subject ◽  
The Mean

The samples that are the subject of laboratory tests of shear strength are from the area of Ponikve – Gacko and mineralogically-petrographically are defined predominantly as sedimentary bound carbonate rocks - limestone, crystalline structures and massive textures. Also, in the mentioned limestones, transitions to sedimentary bound carbonate rocks with conglobrecs and breccias were found. The samples are characterized by a high content of CaCO3. The samples are without macroscopically visible stratification, laminae or cracks, so the test method according to the standard JUS.B.B7.130 was applied. This method involves the preparation of samples of appropriate shapes and dimensions which are placed in molds and subjected to shear at certain angles in the range of 30° to 70 °. The principle is to determine the maximum force at which the test body breaks in the matrix of the test device for different angles. Using the mean test results of several samples for each test angle, it is possible to construct a shear strength limit curve. Shear angles of 30°, 45° and 60 ° were used in the tests and a total of 10 tests were performed for each angle. Based on the performed tests and statistical processing of the results, the shear strength of limestone from the Ponikva area was determined.

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