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Social entrepreneurship in the fitness industry
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Bibliographic description of the article for the citation:

. Social entrepreneurship in the fitness industry//Science online: International Scientific e-zine - 2025. - №8. - https://nauka-online.com/en/publications/economy/2025/8/02-43/

Annotation: The article explores the development of social entrepreneurship within the fitness industry, highlighting its significance in promoting public health and encouraging an active lifestyle. Attention is given to innovative business models that integrate commercial objectives with social goals, such as supporting vulnerable groups, facilitating rehabilitation, and preventing disease. Successful instances of social fitness initiatives are analyzed, along with the challenges and prospects for their long-term sustainability. The article encourages a deeper understanding of the importance of social entrepreneurship as a significant instrument for social impact in the realm of health and wellness.

Keywords: efficiency entrepreneurship fitness social sphere system management
Categories: Economy
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Preparation of gaseous fuel mixtures
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Bibliographic description of the article for the citation:

. Preparation of gaseous fuel mixtures//Science online: International Scientific e-zine - 2025. - №2. - https://nauka-online.com/en/publications/technical-sciences/2025/2/08-19/

Annotation: All specialists in the field of internal combustion engines had to deal with the key problem of these engines - low efficiency; The reasons for this phenomenon are also well known - the imperfection of the mechanism for converting reciprocating motion into rotary motion; It would seem that since the causes of power losses are in the mechanical motion conversion systems, then replacing such a mechanism with a more efficient one should resolve this technical contradiction; Over the last year alone, several thousand technical solutions have been announced in this area, but investors are in no hurry to take advantage of them; The combustion cycle of the fuel mixture in the cylinders of a modern internal combustion engine (Otto cycle) has been brought to complete perfection, its real efficiency on serial internal combustion engines has been brought to 98%, which means that during the implementation of the combustion cycle, 98% of the energy contained in the fuel is extracted; This result is achieved to a large extent due to the design of the fuel system, which has been developed to almost complete perfection, and the associated system of combustion chambers in the engine cylinders, in which combustion today occurs due to combustion at constant pressure.

Keywords: Combustion cycle implementation Constant flame volume Conversion of reciprocating motion into rotational motion Distortion of Otto cycle conditions efficiency Fuel mixture combustion cycle Gaseous fuel mixtures Geometry of tangential channels Internal combustion engines Stable combustion Technical contradiction Vortex mixing of combustible gas Vortex mixing of combustible gas in a vortex generator
Categories: Technical sciences
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The problem of assessing the efficiency of public administration in the sphere of national security at the current stage
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Bibliographic description of the article for the citation:

. The problem of assessing the efficiency of public administration in the sphere of national security at the current stage//Science online: International Scientific e-zine - 2023. - №3. - https://nauka-online.com/en/publications/state-administration/2023/3/05-14/

Annotation: The methodological aspects of assessing the effectiveness of state administration in the field of national security were investigated. The author has highlighted evaluation criteria, requirements for performance indicators. Several methods of assessing the effectiveness of state administration in the field of national security are described: effective or targeted (based on the achievement of the optimal level of national security); relative or cost-effective (based on the ratio of public administration costs and the results obtained in the field of national security).

Keywords: efficiency national security public administration государственное управление державне управління ефективність национальная безопасность національна безпека эффективность
Categories: State administration
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Economics of fixed assets at the enterprise
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Bibliographic description of the article for the citation:

and . Economics of fixed assets at the enterprise//Science online: International Scientific e-zine - 2022. - №11. - https://nauka-online.com/en/publications/economy/2022/11/12-13/

Annotation: This article is devoted to studying the concept «fixed assets» in relation to the enterprise, their content and features of use. The article deals with the issues of wear and tear of fixed assets of the enterprise, increasing the efficiency of their use. In addition, the author points out that the problem of the effectiveness of the formation together with the use of fixed assets of the enterprise should become one of the key tasks for any enterprise.

Keywords: accounting economy efficiency enterprise fixed assets productive activity бухгалтерський облік економіка ефективність кошти підприємство продуктивна діяльність
Categories: Economy
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