scholarly journals External humidifier for ventilator: PID control based on the Ziegler-Nichols method

2020 ◽  
Vol 4 (4) ◽  
pp. 376-396
Author(s):  
D. A. Lipchak ◽  
◽  
A. A. Dushkina ◽  
A. A. Chupov ◽  
◽  
...  
Keyword(s):  
Medical Devices ◽  
Pid Controller ◽  
Measuring Instruments ◽  
Joint Stock Company ◽  
Stock Company ◽  
Electronic Measuring ◽  
Design Bureau ◽  
Pid Tuning ◽  
Therapy Apparatus ◽  
Respiratory Devices

Due to the ubiquitous spread of SARS-CoV-2 coronavirus infection, the demand for anaesthesia and respiratory devices has significantly increased since the beginning of 2020. In particular, artificial ventilation devices, inhalation anaesthesia devices, or oxygen inhalers. The respiratory support devices must include special medical devices designed to heat and increase the moisture content of the respiratory mixture supplied to the patient from the respiratory therapy apparatus. These medical devices are known to as humidifiers. The production of a humidifier for breathing mixtures “TEVLAR” – “UOMZ” according to TU 32.50.21-121-07539541-2018 with accessories was organized jn the territory of Joint Stock Company “Production Association “Urals Optical & Mechanical Plant” named after Mr. E. S. Yalamov”. The electronic measuring instruments unit of the device has been modified within the framework of the project for the modernization of the humidifier of breathing mixtures “TEVLAR” – “UOMZ”. In particular, in order to increase the accuracy of thermal stability of the heating element when heating the breathing mixtures to the target temperature, the software of the electronic measuring instruments unit was modernized by the Medical Devices Design Bureau, namely, the stable PID controller was implemented and tuned. Thus, this article provides an overview of the methods for tuning the PID controller, justifies the choice of PID tuning by the Ziegler-Nichols method and also provides the experimental results to confirm device operation stability.

scholarly journals Assessment of motivation of potential employees of an industrial enterprise

2018 ◽  
Vol 11 (1) ◽  
pp. 81-86
Author(s):  
G. S. Kiseleva
Keyword(s):  
Production Efficiency ◽  
Industrial Enterprise ◽  
Joint Stock Company ◽  
Stock Company ◽  
Corporate Values ◽  
Design Bureau ◽  
Company Policy ◽  
Reducing Costs ◽  
High Level ◽  
Staff Involvement

A competently constructed incentive system ensures a high level of interest and satisfaction with the work activities of the staff, reducing costs and increasing production efficiency. The effectiveness of staff involvement largely depends on determining the motivational attitudes of candidates, identifying the dominant motivators of the applicant, which will save effort and time in dealing with many candidates, hire a specialist focused on achieving goals that do not run counter to the company’s policies. The article outlines the main aspects of assessing the motivation of potential employees. The measures on attraction of necessary quantity of the personnel from external and internal environment are offered. Research of motivational installations of candidates and employees of the industrial enterprise «Signal» Engels Design Bureau named after A.I. Glukharev Joint-Stock Company, on the basis of the data obtained, the values of candidates were determined depending on various parameters: age, position, on a territorial basis. The corporate values that are common to the employees of the enterprise and candidates in search of work are defined: decent wages, comfortable workplace, leadership professionalism, competent company policy, these factors were included in the corporate motivator map. In the area of staff incentives, knowledge of a variety of incentives is required, the ability to link incentives with motivations, and to receive evaluation information on the perception of incentives by candidates and employees to increase the efficiency of staff involvement and enrich the motivation system. The effectiveness of staff involvement can be increased by studying the motivational attitudes of candidates and selecting personnel at the initial stage, the motivational profile of which must match the company’s goals.

scholarly journals Scientific and research work of Zaporizhzhia aircraft engine builders in the 1970’s

2021 ◽  
Vol 11 (1) ◽  
pp. 10-25
Author(s):  
Olha Chumachenko
Keyword(s):  
Research Work ◽  
Technical Information ◽  
Aircraft Engine ◽  
Building Design ◽  
Machine Building ◽  
State Enterprise ◽  
Joint Stock Company ◽  
Aircraft Engines ◽  
Stock Company ◽  
Design Bureau

On the basis of a wide base of sources, the article highlights and analyzes the development of research work of aircraft engine companies in Zaporizhzhia during the 1970s. The existence of a single system of functioning of the Zaporizhzhia production association “Motorobudivnyk” (now the Public Joint Stock Company “Motor Sich”) and the Zaporizhzhia Machine-Building Design Bureau “Progress” (now the State Enterprise “Ivchenko – Progress”) is taken into account. The directions of research work that were peculiar to the specified period are established. These were inventive activities, development of technological processes, increasing the reliability and durability of gas turbine engines, automation and mechanization of production, cooperation with industry firms in other countries, and cooperation with research institutions. The development of a scientific-theoretical and technical basis for the production of aircraft engines is comprehensively assessed. Its dependence on structural subdivisions, which at the aircraft engine enterprises were the department of scientific and technical information, the Information and Computing Center, the department of patenting, innovation and invention of the plant, was determined. They were engaged in the accumulation, generalization and dissemination among specialists of their own and borrowed experience of both past and present. The activity of the scientific and technical council, which included leading specialists of Zaporizhia aircraft engine companies, was monitored. Factors that contributed to the revival of research in the second half of the 1970’s were identified. Among them, the leading place belongs to the creation and production of D-36 and D-18T aircraft engines. The design advantages of these engines are described. Some shortcomings and miscalculations made during their design are taken into account. Methods and measures aimed at overcoming the difficulties associated with the design, manufacture, operation and repair of aircraft engines are summarized. The research is based on the following methods: actualization, comparative-historical, problem-chronological, multifactor analysis, principles of historicism and objectivity.

Studying Demand for Institutes of Corporate Governance: Legal Aspects

2003 ◽  
pp. 50-61 ◽  
Author(s):  
T. Medvedeva ◽  
A. Timofeev
Keyword(s):  
Corporate Governance ◽  
Legal Aspects ◽  
Joint Stock Company ◽  
Federal Law ◽  
Stock Company ◽  
Open Joint Stock Company ◽  
Open Joint ◽  
Market Relations ◽  
Corporate Legislation

The article analyzes legal aspects of institutes of corporate governance. Different draft laws "On Joint-Stock Companies" are considered which reflected interests of separate groups of participants of market relations. Stages of property redistribution are outlined. The advantages of the model of the open joint-stock company are formulated. Special attention is paid to the demand for legal institutes of corporate governance as well as to the process of accepting the Federal Law "On Entering Amendments to the Federal Law "On Joint-Stock Companies"" which was enacted in 2002. The article contains proposals directed at improvement of corporate legislation.

Assessment of professional risk of health of workers of the enterprise for repair of railway carriage

2020 ◽  
pp. 9-19
Author(s):  
O. Klepikov ◽  
A. Boreyko ◽  
G. Kurenkova
Keyword(s):  
Relative Risk ◽  
Working Conditions ◽  
Light Level ◽  
Occupational Risk ◽  
Rolling Stock ◽  
Joint Stock Company ◽  
Stock Company ◽  
Production Factors ◽  
Object Of Study ◽  
High Level

The aim of the study was to assess the professional risk of developing diseases in workers of the railway car repair enterprise. The Voronezh Car Repair Plant, a branch of Vagonremmash Joint-Stock Company, was chosen as the object of study. Methods: «The methodology for calculating individual occupational risk depending on the working conditions and the health status of the employee», developed by the Klin Institute for Protection and Working Conditions in conjunction with the Research Institute of Occupational Medicine (2013), the main professions; cohort study with the calculation of the relative risk of morbidity with temporary disability, the odds ratio, the etiological share of factors in the formation of morbidity (group size: 250 people, experimental group — workers of the main specialties, 95 people — comparison group). Results. According to the research results, the priority factors of occupational health risk include: chemical, noise, heating microclimate, low light level. For certain professions, the share of the contribution of priority factors to the risk profile (PV) reaches 40 %. The indicator of individual occupational risk is 0.12 to 0.26 units. The high level of professional risk (0.22 ÷ 0.26) is characterized by the working conditions of the mechanics for the repair of rolling stock, machine tools (woodworking), casters (metal), thermists, plastic casters. In professional groups with medium and high risk, the indicator of the relative risk of morbidity with temporary disability is higher than 1 (RR = 1.75 and 1.39, respectively), and the etiological share of production factors in the formation of diseases is from 27.95 (subgroup with secondary professional risk) up to 42.88 % (a subgroup with high professional risk), which indicates the professional condition of the disease. Discussion. In general, our data are consistent with the results of similar studies conducted earlier at the car building and car repair enterprises. In order to ensure hygienically safe working conditions and preserve the health of workers, it is necessary to reduce the level of exposure to production factors, including through the introduction of modern equipment and improvement of technological processes.

EVALUATION OF THE FINANCIAL STABILITY OF THE INSURANCE ORGANIZATION

2020 ◽  
pp. 68-78
Author(s):  
Oleg Georgievich Blazhevich
Keyword(s):  
Capital Structure ◽  
Financial Stability ◽  
Load Level ◽  
Joint Stock Company ◽  
Insurance Company ◽  
Working Capital ◽  
Stock Company ◽  
Ability To Pay ◽  
Essential Component ◽  
Equity Ratio

The article studies the financial stability of a particular insurance organization. The financial stability of the insurance company is an essential component of its activities and characterizes the ability to pay off its obligations on time and in full. The analysis of financial stability is defined as an independent object of evaluation, which explores the structure of the formation and use of capital. To assess the financial stability of the insurance company, a set of indicators was formed, including the following ratios: level of equity, ratio of equity to liabilities, ratio of insurance premiums and insurance reserves, ratio of working capital and non-current capital, level of permanent capital, ratio of equity and insurance reserves, level of debt load, level of insurance reserves. The insurance public joint-stock company RESO-Garantia was chosen as the object of analysis. The analysis showed that the capital structure in the insurance company under consideration is not optimal. The company has a shortage of insurance reserves, which is offset by equity.

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