Кафедра цивільної безпеки
Постійне посилання на фондhttps://repository.lntu.edu.ua/handle/123456789/85
Переглянути
8 результатів
Результати пошуку
Item type:Наукова стаття, Characteristics of occupational safety and work hygiene amidst the pandemic(2021) Fedorchuk-Moroz, Valentyna; Visyn, OlenaTo ensure proper functioning of economic entities amidst the pandemic, namely the creation of safe and healthy working conditions and reducing the risks arising from COVID-19, employers should in the organization of work be guided by the new international standard ISO/PAS 45005: 2020 “Occupational health and safety management – General guidelines for safe working during the COVID-19 pandemic”. Particular attention should be paid to mental health of employees and their emotional recovery, as well as to rational regime of work and rest.Item type:Наукова стаття, Mental Health of the Population in the Volyn Region during Wartime(2024) Fedorchuk-Moroz, ValentynaThis article is devoted to thestudy of the issues of preserving the mental health of Ukrainians during the war, in particular in the Volyn region. The main attention is paid to the analysis of the psychological impact of the war on the mental health of the population of the Volyn region. This article analyzes the results of a survey of Volyn residents within the framework of the All-Ukrainian program of psychological health “How are you?”. The issue of providing counseling services and psychological support to improve the mental health of students at Lutsk National Technical University was also highlighted.Item type:Наукова стаття, Evaluating the stiffness of a cast strip for protecting a preparatory mine working(2025) Podkopaiev, Serhii; Visyn, Olena; Fedorchuk-Moroz, ValentynaThe object of this study is the deforma-tion processes in a protective structure of the preparatory working, maintained in the excavated space of the excavation area. The task addressed was ensuring the stability of the preparatory working in a deep coal mine to improve the safety of miners and coal mining. The assessment of the strength of the cast strip for the protection of prepa-ratory workings in excavation areas has been substantiated.It was experimentally established that in the zone of active influence of mining pressure on the section 0 < l < 50 m behind the treatment face, there is an exponential dependence between the length of the work-ing l (m) and the relative change in the vol-ume δV of the protective structure. It charac-terizes the safe deformation resource of the cast strip. Within its limits, the process of gaining strength of the protective structure occurs. At δV < 0.18 and the failure rate of the arched flexible support ω< 0.2, the losses of the cross-sectional area of the working do not exceed 20 %. Under conditions when δV ≤ 0.22, the resistance of the protective structure increases, which makes it possible to limit the movement of lateral rocks on the contour of the working, ensuring its overall dimensions. In cases when δV > 0.22, and 0.22 < ω < 0.68, the losses of the cross-section-al area are more than 40 %. At a distance of l > 80 m behind the breakage face, the level of threat of roof collapses approaches a critical state, which is associated with an uncontrolled increase in lateral rock dis-placements due to the loss of strength of the cast strip.The cast strip performs the functions of a supporting structure only in a certain range of physical, mechanical, and defor-mation properties.The operational condition of the pre-paratory working is ensured within the deformation resource of the cast strip. After reaching the rated strength of the cast strip, its strength makes it possible to limit the movement of lateral rocks on the contour of the working and ensure its stability at a dis-tance of l ≤ 80 m along the length of the excavation section.Item type:Наукова стаття, Determination of the stability of rolling strains of steep layers during the unloading of a coal-carbon massive(2024) Podkopaiev, Serhii; Fedorchuk-Moroz, Valentyna; Shymchuk, OleksandrThe object of this study is the condition of side rocks in a coal rock massif with pre-paratory workings. The task solved was to ensure the stability of preparatory workings to improve the safety of miners’ activities.The bearing capacity of protective struc-tures in the preparatory mining workings along the length of the excavation section in a coal mine was comparatively assessed.The operational condition of the roll-back stretch, when using a protective technique that involves coal pillars, is provided for at their relative deformation e < 0.25 and rela-tive volume change dV < 0.1. At a distance of l > 50 m behind the cleaning pit, at e ³ 0.6–0.8, there is a decrease in the load-bearing capa-city of coal pillars and the destruction of the roof. The loss of cross-sectional area of the roll-back stretch is 50 %. Under such con-ditions, the level of a roof collapse threat is approaching a critical state. When using rolling bundles made of wooden sleepers at e > 0.21 and dV > 0.16, conditions are created around the preparatory workings at which the integrity of the roof is ensured through the gradual sealing of protective structures. At a distance l > 60 m, the increase in lateral rock displacements reaches the minimum va lues DU = 10 mm, and the loss of the cross-sec-tional area of the roll-back stretch is 30 %.The kind of functional dependence between the length l (m) of the roll-back stretch with different protection techniques and the rela-tive change in the volume dV of protective structures was experimentally determined. Such a dependence makes it possible to assess the bearing capacity of protective structures along the length of the excavation area in the zone of active influence of mountain pressure behind the cleaning pit.The operational condition of roll-back stretches when using coal pillars is ensured within the limits of their deformation resource, which limits the use of this protection tech-nique. To ensure the stability of preparatory workings, it is advisable to use rolled bundles made of wooden sleepers. After their compac-tion, the movement of side rocks is limited in the worked-out space of the excavation site.Item type:Наукова стаття, A Data-Driven Risk-Informed Decision Support Framework for Sustainable Municipal Organic Waste Management in Smart Cities(2026-06-08) Rudynets, Mykola; Fedorchuk-Moroz, ValentynaThe rapid growth of organic waste volumes in urban areas and increasing environmental pressures necessitate the transition toward sustainable and risk-informed municipal waste management systems. This study aims to develop a data-driven decision support framework for the risk-informed management of municipal organic waste within the context of sustainable urban development. The proposed approach integrates multi-source municipal data, advanced preprocessing techniques, entropy-based feature weighting, and an ensemble of machine learning models, including Random Forest, Gradient Boosting, and XGBoost. An integrated environmental risk index is formulated to quantify the state of the waste management system and to support predictive analytics. The results demonstrate high predictive performance and reveal that key risk drivers include demographic pressure, transport accessibility, infrastructure characteristics, and seasonal variability of waste generation. The developed framework enables the integration of predictive risk analytics into municipal decision support systems, facilitating optimized waste collection logistics, infrastructure planning, and early identification of critical conditions. The findings confirm that data-driven approaches can significantly enhance the efficiency and adaptability of urban waste management systems. The proposed framework contributes to sustainable urban development by supporting circular economy principles and enabling proactive, risk-aware governance of municipal organic waste systems.Item type:Наукова стаття, Study of Organic Carbon-Containing Additives to Water Used in Fire Fighting, in Terms of Their Environmental Friendliness(2024-07-15) Loboichenko, Valentyna; Fedorchuk-Moroz, ValentynaIn the article, a state analysis of the organic carbon-containing additives use in fire fighting has been carried out. Negative environmental effects when using fluorine-containing short- and long-chain surfactants, which can act as both a fire extinguishing agent and its decomposition product, have been noted. As an important direction for further evolution in the field of fire extinguishing agents, the use of oxysilanes and gel systems based on liquid glass as environmentally friendly compounds has been noted. The prospects and environmental friendliness of the use of acoustic effects in extinguishing fires have been noted. The addition of small amounts of inorganic and organic compounds is regarded as an inexpensive and effective method to increase the fire fighting properties of water. In this work, the ecological characteristics of a number of organic compounds used in fire fighting as thickeners of aqueous solutions and the reduction of their surface tension were studied. Alginic acid has been shown to be the most environmentally friendly water additive among the investigated organic carbon-containing compounds used in fire fighting.Item type:Наукова стаття, Review of Advances in Fire Extinguishing Based on Computer Vision Applications: Methods, Challenges, and Future Directions(2025-10-16) Loboichenko, Valentyna; Fedorchuk-Moroz, ValentynaThis paper examines the state-of-the-art in fire suppression technologies based on computer vision applications in the subject areas of computer science and engineering. The study involves a two-stage analysis of publications using keywords. This paper presents a bibliographic analysis of scientific literature from the Scopus database using VOSviewer software and the author’s methodological approach. General keywords were used for the initial analysis of the dataset, followed by a more detailed study with additional criteria and specific keywords. The categories considered in the article are as follows: Firefighting Robots, Fire Detection, Fire Suppression, Aerial Vehicles, and Computer Vision. It is shown that the research includes technical aspects of fire robots and systems, as well as the improvement of their software and hardware. The subsequent review highlights the important role of computer vision in improving the efficiency and effectiveness of fire suppression systems. It is noted that key advances include the development of sophisticated fire detection algorithms and the implementation of automated fire suppression systems. The study also discusses the challenges and future directions in this field, emphasizing the need for continuous innovation and interdisciplinary collaboration. This review provides valuable information for researchers, engineers, and practitioners in the field of fire safety by offering a comprehensive overview of state-of-the-art technologies and their applications in fire suppression.Item type:Наукова стаття, A model of synergistic management of a medical project portfolio based on the telegraphic equation(Луцьк: ЛНТУ, 2024) Fedorchuk-Moroz, ValentynaThe relevance of the study was the need to improve the efficiency of managing the portfolio of medical projects for the development of hospital districts. The purpose of the article was to develop and use a model of synergistic management of a portfolio of medical projects for the development of hospital districts based on the telegraphic equation, which takes into account the synergistic relationships between projects and ensures maximum value from their implementation. The paper used the method of critical analysis of scientific literature on project management, information technology, synergistic management and medical project management, a model of synergistic management of a portfolio of medical projects based on the telegraphic equation, numerical methods, and the method of hierarchy analysis. An analysis of scientific papers on the available tools for managing medical projects was carried out. It was found that in 2024 there are no management tools that provide modelling of dynamic processes in systems with spatial and temporal interactions. The expediency of developing a model for synergistic management of a portfolio of medical projects using the elegraphic equation is substantiated. A model of synergistic management of a portfolio of medical projects based on the telegraphic equation is proposed. It involved 6 stages, which are based on the formation of a system of interconnected ordinary differential equations, which are a discrete analogy of the telegraph equation. Based on the developed model, a computer program was created that significantly speeds up the process of making management decisions on the implementation of project portfolios when their project environment changes. The adequacy of the computer program was checked. It was found that the created decision support tool provides accurate results in solving the problems of managing a portfolio of medical projects. The error between numerical and analytical solutions did not exceed 5%, which meets the requirements for such models. Based on the research, the status and synergistic effects of medical projects included in the hospital district development portfolio were quantified, and recommendations for project managers were developed. The obtained research results provide project managers with tools to quantify the status and synergies of healthcare projects in hospital district development portfolios in a given project environment, and recommendations for effective management of these portfolios have been developed.