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Aerospace vehiclesMulti-criteria optimization of composite panels with rib reinforcement under combined loading

Multi-criteria optimization of composite panels with rib reinforcement under combined loading

Multi-criteria optimization of composite panels with rib reinforcement under combined loading Mykola Mormul ORCID: https://orcid.org/0000-0002-8036-3236 University of Customs and Finance Oleksandr Shchytov ORCID: https://orcid.org/0000-0002-1435-2918 TEC-Lyceum No. 100: Dnipro, UA Dmytro Shchytov ORCID: https://orcid.org/0000-0003-4306-8016 University of Customs and Finance Purpose. The study is aimed at finding a constructive balance between the mass and cost of composite panels with stiffeners that are subjected to combined loading. The optimization was carried out taking into account real operation conditions, when a slight improvement in …

Project Management and LeadershipThe Impact of Emotionally Driven Service on Customer Loyalty in the Beauty Services Sector

The Impact of Emotionally Driven Service on Customer Loyalty in the Beauty Services Sector

The Impact of Emotionally Driven Service on Customer Loyalty in the Beauty Services Sector Yelyzaveta Kravchuk ORCID: https://orcid.org/0009-0000-7947-9576 Oles Honchar Dnipro National University Oleksandr Krupskyi ORCID: https://orcid.org/0000-0002-1086-9274 Oles Honchar Dnipro National University Purpose. This article aims to theoretically substantiate and empirically investigate the impact of emotional service on customer loyalty in the beauty industry. It identifies key emotional interaction factors that enhance customer satisfaction and the competitive advantage of beauty service providers. Design / Method / Approach. The study employs an …

Control Systems, Telecommunications and NavigationEvaluation of dynamic characteristics of a linear time-varying system

Evaluation of dynamic characteristics of a linear time-varying system

Evaluation of dynamic characteristics of a linear time-varying system Volt Avdieiev ORCID: https://orcid.org/0000-0002-9986-7637 Oles Honchar Dnipro National University Purpose. The development of methodological support for the construction of an algorithm for calculating the coefficients of the transfer function of the second order link, which is equivalent to a time-varying system in the selected time interval from the point of view of the smallest average value of the modulus of the difference of dimensionless state vectors. Design / Method / Approach. Mathematical …

Ecology, industrial and environmental safetyWet wipes in green ecosystems of Chernihiv, Ukraine

Wet wipes in green ecosystems of Chernihiv, Ukraine

Wet wipes in green ecosystems of Chernihiv, Ukraine Nataliia Tkachuk ORCID: https://orcid.org/0000-0002-5115-7716 T.H. Shevchenko National University “Chernihiv Colehium” Dariia Zahryva ORCID: https://orcid.org/0009-0006-7515-8488 Chernihiv Gymnasium No. 32 Purpose. To assess the pollution of recreation areas in Chernihiv with wet wipes and raise schoolchildren’s awareness of the related environmental problems. Design / Method / Approach. Direct counting of wet wipes on 100 m² in summer and autumn 2024. A socio-pedagogical study of schoolchildren’s awareness was conducted through a lecture and an online questionnaire before and …

NewsCIMS 2024 Autumnal: Certificates

CIMS 2024 Autumnal: Certificates

CIMS 2024 Autumnal: Certificates Dear participants,Please note that if you need to print your certificate, its actual size is A5 (148 × 210 mm). Of course, you can print it at any size you prefer. Certificates is issued to: Name Surname Certificate # Daniil Abramov MMXXIV2001 Anna Andrukh MMXXIV2002 Oleh Baibuz MMXXIV2003 Valerii Bashev MMXXIV2004 Oleksandr Bazyk MMXXIV2005 Mykola Bondarenko MMXXIV2006 Valerii Bucharskyi MMXXIV2007 Oleksii Demchenko MMXXIV2008 Оlena Dolzhenkova MMXXIV2009 Daniil Doroshenko MMXXIV2010 Roman Duban MMXXIV2011 Serhii Duliepov MMXXIV2012 Tetiana …

Aerospace vehiclesDesign and Optimization of a Hybrid Gas Generator for Hydrogen Peroxide Tank Pressurization

Design and Optimization of a Hybrid Gas Generator for Hydrogen Peroxide Tank Pressurization

Design and Optimization of a Hybrid Gas Generator for Hydrogen Peroxide Tank Pressurization Mykhailo Vorobei ORCID: https://orcid.org/0009-0009-9173-8564 Oles Honchar Dnipro National University Mykola Bondarenko ORCID: https://orcid.org/0009-0008-8421-8408 Oles Honchar Dnipro National University Purpose. This study develops a pressurization system for hydrogen peroxide tanks using a hybrid gas generator powered by liquid oxygen and solid fuel. The system aims to improve hybrid rocket engine efficiency and reliability by stabilizing oxidizer tank pressure. Applications in space and defense are considered, where performance and …