Разработка расширения для Altium Designer по взаимодействию с программами расчета надежности
The paper shows that the main purpose of any industrial enterprise that implements a quality management system in its activities is to restore order in the industrial enterprise, i.e. the introduction of an effective management system. Hence, the quality management system for an industrial enterprise today is a mandatory factor of its existence in the market. It also provides information on the method of calculation of the quality factor of the production equipment. Also, the statistics of the incoming categories of questions in the assessment of the coefficient taking into account constructive failures is reflected.
The article deals with forecasting the dependability indicators of state-of-the-art spacecraft onboard equipment. The authors demonstrate the applicability of the results of equipment and components testing for resistance to ionizing radiation in forecasting dependability indicators. They prove the applicability of Alfa distribution of time to failure in forecasting CMOS IC reliability and longevity. The paper presents design ratios for probability evaluation of fail-safe operation, mean time to failure and minimum operation time. Ways are shown to improve the resistance of state-of-the-art spacecraft onboard equipment through the use of specialized means of protection against the effects of ionizing radiation of the outer space. This research (No. 14-05-0038) was conducted with the support of the Higher School of Economics Academic Fund Program in 2014.
The question of ensuring reliability, especially of durability of mobile communication systems on the stage of planning, is considered in this paper. The purpose of this work is rising quality of projection radio engineering devices (their components) of mobile communication systems. Research of real methods for calculating the indicators of longevity radio engineering devices was conducted for aim achievement. They have some disadvantages, because according to industry standards 4.012.013-84 they use constant value of variation coefficient in mathematical expression. Unified method in the form of IDEF0-diagram was proposed for elimination of defects. It allows to remove quantification of the durability of the constituent parts of the mobile communication systems of «resource» type. Method consists of five successive steps: the formation of source data, updated calculation of variation coefficient, calculation of storage time, evaluation of complex load factor and calculating of indicators of «resource» type. Notably attention is paid to calculating of updated variation coefficient, which makes a significant contribution to the result. It was detected that it is necessary to apply complex load factor in mathematical expressions in the evaluation of resource of radio engineering devices of mobile communicational systems, because it considers both electrical load and temperature, which is explained by the thermally dependent electrical parameters of electrical components. A summary table of the mean group value of the coefficient of variation for certain subgroups of electrical components was compiled. This table is accessory to counting indicators of durability of «resource» type if the necessary electronics are not available in handbooks about reliability. The calculation of the quantitative values of the durability of the video transmitter with the construction of visual dependencies of gamma-percent resource on the complex load factor was completed. Dependences that have been obtained mirror underestimation of gamma-percent resource with the method which is given in industry standards 4.012.013-84 compared with the proposed. It is recommended to integrate the results of research into methodology of calculating of reliability indicators of «resource» type of components at enterprises and research institutes engaged in the development of mobile communication systems.
The article describes validation process of the diagnostic tool for monitoring assessment of socio-emotional habits in elementary school. The tool is based on the Big Five model and includes three scales: Goal achievement, Cooperation and Emotional control. Two validation researches have been conducted, both on third-grade students from Moscow and Tatarstan elementary schools. Preliminary research (N=1318) examined the construct validity and reliability of the questionnaire. Confirmatory and exploratory factor analysis and methods of Modern Test Theory have confirmed hypothecated factorial structure. Subsequent research (N=2559) proved criterion validity of the questionnaire: it showed expected level and direction of correlation with the results of reading and mathematical skills testing. Presented questionnaire can be used for group monitoring assessment of socio-emotional development in elementary school.