scholarly journals Fidedignidade, um enfoque estatístico

1982 ◽  
Vol 4 (4) ◽  
pp. 27
Author(s):  
Maria Emília Camargo ◽  
José Elias Rigueira
Keyword(s):  
Physical Education ◽  
Reliability Theory ◽  
Total Variance ◽  
Measurement Reliability ◽  
The Real ◽  
Time Control ◽  
Error Of Measurement

Reliability is defined as error of measurement. Reliability theory is described and a model is proposed that divides the total variance in two parts: the variance due to error and the real variance.The method of Split-half is described and to determine the reliability of the instrument “Deslizador Manual” used for time control in the area of Physical Education.

Using graphs to construct a math model of a microcontroller-based system for preset rate control of a flywheel motor to be used in high-dynamics spacecraft

2020 ◽  
pp. 126-134
Author(s):  
Vladimir V. NEKRASOV
Keyword(s):  
Real Time ◽  
Rotation Rate ◽  
Control Function ◽  
Real Time Control ◽  
Math Model ◽  
The Real ◽  
Time Control ◽  
Power Matrix ◽  
High Dynamics ◽  
Stated Problem

Developing a microcontroller-based system for controlling the flywheel motor of high-dynamics spacecraft using Russian-made parts and components made it possible to make statement of the problem of searching control function for a preset rotation rate of the flywheel rotor. This paper discusses one of the possible options for mathematical study of the stated problem, namely, application of structural analysis based on graph theory. Within the framework of the stated problem a graph was constructed for generating the new required rate, while in order to consider the stochastic case option the incidence and adjacency matrices were constructed. The stated problem was solved using a power matrix which transforms a set of contiguous matrices of the graph of admissible solution edge sequences, the real-time control function was found. Based on the results of this work, operational trials were run for the developed control function of the flywheel motor rotor rotation rate, a math model was constructed for the real-time control function, and conclusions were drawn about the feasibility of implementing the results of this study. Key words: Control function, graph, incidence matrix, adjacency matrix, power matrix, microcontroller control of the flywheel motor, highly dynamic spacecraft.

scholarly journals Educational course "Basics of working with fans" as a factor in the objectification of perception of the 2018 FIFA World Cup and football fans in Russia

2018 ◽  
Author(s):  
Victoria Alexandrovna Dihor ◽  
Nina Borisovna Serova ◽  
Dmitry Yurievich Narkhov
Keyword(s):  
Physical Education ◽  
Physical Culture ◽  
Russian Society ◽  
World Cup ◽  
Fifa World Cup ◽  
The Real ◽  
The Past ◽  
Physical Education Departments ◽  
Football Fans ◽  
Educational Course

The FIFA 2018 World Cup is a significant event for Russian society. Ministries carry out various actions to promote football in the country. The Russian society of sociologists conducted a survey (4703 respondents) to understand the attitude to the Championship. Further, the teachers of the Ural Federal University conducted a survey of the attitude to football fans. Scientists have found that over the past 7 years, citizens have become more positive about fanaticism, but there is a problem of lack of objective information. To solve this problem, teachers at the Institute of physical culture of the Ural Federal University have developed a special course "Basics of working with the fans". The course is designed for students, postgraduates and teachers of physical education departments of universities, as well as stewards and volunteers. Since September 2017, 118 students have been trained in this course. The course consists of two parts: theoretical – describing the types of fans, information about the differences between fans from different countries; practical – reviewing the real situations of interaction with fans, communicating with Russian and foreign fans. Classes are conducted by a sports psychologist who studies football fans for 8 years.

Optimization of the real-time control strategy in petroleum-refining catalyst production wastewater treatment with shortcut nitrification

RSC Advances ◽  
2015 ◽  
Vol 5 (105) ◽  
pp. 86490-86496 ◽  
Author(s):  
Tianqi Ma ◽  
Shaohui Guo ◽  
Zhihui Guo ◽  
Qiushi Zhu ◽  
Jinfu Chen
Keyword(s):  
Wastewater Treatment ◽  
Real Time ◽  
Control Strategy ◽  
Control Parameter ◽  
Petroleum Refining ◽  
Real Time Control ◽  
High Ph ◽  
The Real ◽  
Time Control ◽  
Catalyst Production

Indicated high pH benefits the accuracy of real-time control strategy, explained why DO as a control parameter is unreliable.

Real-Time Pseudodielectric Function of Low-Temperature-Grown GaAs

2000 ◽  
Vol 618 ◽  
Author(s):  
D.A. Gajewski ◽  
J.E. Guyer ◽  
J.J. Kopanski ◽  
J.G. Pellegrino
Keyword(s):  
Low Temperature ◽  
Real Time ◽  
Diffuse Reflectance Spectroscopy ◽  
High Energy ◽  
Real Time Control ◽  
The Real ◽  
Time Control ◽  
Active Feedback ◽  
Low Temperature Grown Gaas ◽  
Lt Gaas

ABSTRACTWe present the real-time pseudodielectric function <ε(E)> of low-temperature-grown GaAs (LT-GaAs) thin films during the growth as a function of growth temperature Tg and thickness. We obtained accurate measurements of the real-time <εc(E)> by using in situspectroscopic ellipsometry (SE) in conjunction with active feedback control of the substrate temperature using diffuse reflectance spectroscopy. We show that for epitaxial LT-GaAs layers, the peak in the imaginary pseudodielectric function <ε2(E)> decreases in amplitude and sharpness systematically with decreasing Tg. We also revealed an abrupt change in <εc(E)> near the critical epitaxial thickness hepi, the value of which decreases with decreasing Tg. Above hepi, the LT-GaAs grows polycrystalline (amorphous) above (below) Tg ∼ 190°C. We also simultaneously monitored the surface roughness and crystallinity by using real-time reflection high-energy electron diffraction (RHEED). These results represent progress in obtaining real-time control over the composition and morphology of LT-GaAs

Sign in / Sign up

Export Citation Format

Share Document