Acta Montanistica Slovaca最新文献

Navigating the Dynamics of Brent Crude Oil Prices: Factors, Trends, and Insights 布伦特原油价格动态导航：因素、趋势和见解

IF 2.2 4区地球科学

Acta Montanistica Slovaca Pub Date : 2024-07-15 DOI: 10.46544/ams.v29i1.08

{"title":"Navigating the Dynamics of Brent Crude Oil Prices: Factors, Trends, and Insights","authors":"","doi":"10.46544/ams.v29i1.08","DOIUrl":"https://doi.org/10.46544/ams.v29i1.08","url":null,"abstract":"Accurate Brent Crude Oil price prediction is essential for informed decision-making and risk control in the global energy market. This paper examines the dynamics of Brent Crude Oil prices over the previous 35 years, utilizing predictive modelling techniques to project future prices and analyzing historical trends and relationships with the GDPs of major economies. The statistical methods used in this paper include the moving average and Pearson correlation coefficient. While correlation studies show significant positive links between Brent Crude Oil prices and the GDPs of major economies like China, Saudi Arabia, Europe, Russia, and the United States, historical data analysis reveals large price volatility. Highly accurate price forecasting using LSTM (Long Short-Term Memory) modelling approaches provides detailed risk management and decision-making information in the global energy market. The application of the Neural Network and the ARIMA model shows an increase in the price of Brent crude oil in the next year, 2024. Identifying the importance of the Brent crude oil price forecast and its effect on the international market is highly needed. This paper thus might help to increase economic growth. These results highlight the importance of advanced modelling techniques and economic indicators in managing oil price changes and help make informed decisions in the energy industry.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141647054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bankruptcy and bonity models use for the prediction of the mining organization development 用于预测矿业组织发展的破产和骨质模型

IF 2.2 4区地球科学

Acta Montanistica Slovaca Pub Date : 2024-07-15 DOI: 10.46544/ams.v29i1.17

引用次数: 0

Application of life cycle assessment (LCA) to analyze the environmental loads of heavy machinery components 应用生命周期评估（LCA）分析重型机械部件的环境负荷

IF 2.2 4区地球科学

Acta Montanistica Slovaca Pub Date : 2024-07-15 DOI: 10.46544/ams.v29i1.12

{"title":"Application of life cycle assessment (LCA) to analyze the environmental loads of heavy machinery components","authors":"","doi":"10.46544/ams.v29i1.12","DOIUrl":"https://doi.org/10.46544/ams.v29i1.12","url":null,"abstract":"The heavy machinery used in mining and mineral processing generates significant environmental burdens that cause global warming and also negatively affect human health. This is caused by the use of large amounts of energy by these machines, including the amount of process heat, which generates negative environmental changes. As part of sustainable development, it is necessary to look for more friendly solutions, e.g., life cycle assessment (LCA). Therefore, the objective was to analyse the main environmental loads that arise during the extraction and processing of the component materials used in mining machines. In this case, the subject of the research was a reduction gear with a high utilisation rate in excavators and forklifts used in mining. The environmental impact criteria taken into account in the analysis were ozone depletion, human toxicity, and eutrophication. The analysis was carried out using the OpenLCA programme with the ecoinvent database. The results of the analysis showed that in the extraction and processing phase of the reduction gear materials, the main environmental loads arise for selected criteria arise, among others: during coke production, oil and gas extraction, natural gas transport, and hard coal exploitation. The results of the analysis may contribute to the sustainable development of machines in the mining industry and may be useful in the production of new mining machines in order to eliminate their negative impact throughout their life cycle.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141649350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Impact of Climate Change on Life Expectancy in the UK: Empirical Evidence from Fourier Bootstrap ARDL Procedure 气候变化对英国人预期寿命的影响：傅立叶自引导 ARDL 程序的经验证据

IF 2.2 4区地球科学

Acta Montanistica Slovaca Pub Date : 2024-07-15 DOI: 10.46544/ams.v29i1.15

引用次数: 0

Bitcoin as a National Currency: A Case Study for the Czech Republic 比特币作为国家货币：捷克共和国案例研究

IF 2.2 4区地球科学

Acta Montanistica Slovaca Pub Date : 2024-07-15 DOI: 10.46544/ams.v29i1.02

{"title":"Bitcoin as a National Currency: A Case Study for the Czech Republic","authors":"","doi":"10.46544/ams.v29i1.02","DOIUrl":"https://doi.org/10.46544/ams.v29i1.02","url":null,"abstract":"In an era of changing financial landscapes, the position of cryptocurrencies like Bitcoin as possible national currencies is worth investigating. This study investigates Bitcoin's adherence to currency criteria and its consequences for GDP development in a certain country. The mining industry plays a significant role in the GDP of many countries. The extraction of raw materials such as metals, minerals, and fossil fuels is essential for producing a wide range of goods and services. This generates jobs and tax revenues and supports economic growth. Understanding these processes is critical, given the ongoing debate about Bitcoin's place in modern economies. This research looks into Bitcoin's usefulness as a currency and its possible influence on a certain country's GDP. The results show that Bitcoin fits the requirements for money, acting as a means of exchange and a store of value, with features including mobility, divisibility, commensurability, and fungibility. When examining its influence on GDP, empirical data indicate that, while currency appreciation may provide the illusion of stronger GDP growth when denominated in foreign currency, it damages growth domestically. According to a neural network study, Bitcoin's large impact on GDP renders it unsuitable for use as a national currency in the Czech Republic. Despite matching currency criteria, Bitcoin's adoption confronts problems such as volatility, a lack of central authority, and its worldwide nature, which limit its usefulness in promoting national economic growth. This analysis emphasizes country selection and length restrictions, finding that Bitcoin's existing position as an investment instrument restricts its viability as a national currency.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141648130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Safety improvement in open-pit mines with challenging mining conditions through upgrading avalanche prevention measures 通过提升雪崩预防措施，改善采矿条件恶劣的露天矿的安全状况

IF 2.2 4区地球科学

Acta Montanistica Slovaca Pub Date : 2024-07-15 DOI: 10.46544/ams.v29i1.13

{"title":"Safety improvement in open-pit mines with challenging mining conditions through upgrading avalanche prevention measures","authors":"","doi":"10.46544/ams.v29i1.13","DOIUrl":"https://doi.org/10.46544/ams.v29i1.13","url":null,"abstract":"One of the most common problems mining companies face in developing open-cut deposits in complicated geological and climatic conditions is avalanches during the spring-winter work period. This phenomenon is accompanied by a rapid displacement of snow masses, which can lead to catastrophic consequences. In this regard, the article aims to develop a modernized set of measures for avalanche protection. Prevention of avalanches of catastrophic scale, leading to blockages, road closures, and accidents, and the introduction of measures to reduce accidents and injuries in quarries and dumps, is a time-consuming task that requires serious approaches to its solution. The main research method is analyzing the applied anti-avalanche measures for active impact on snow cover and considering the possibility of using safer methods for active impact on avalanches at a particular mining enterprise. This approach allows for the evaluation of the advantages and disadvantages of the avalanche measures used and for choosing a set of measures to ensure more effective avalanche protection. The authors analyzed the existing shortcomings in the regulatory documents related to the provision of avalanche protection and anti-avalanche measures. It was found that they are not able to effectively ensure the development of internal local documents of enterprises in the field of anti-avalanche measures at the present stage. The resulting study showed that a comprehensive solution to the problem is needed through the introduction of several anti-avalanche devices to reduce the likelihood of avalanches of catastrophic scale. For the first time, the authors attempted to justify the possibility of using a modernized set of measures for the preliminary descent of snow avalanches to solve the problem of avalanche protection in the conditions of a real mountain object.\u0000The results obtained can be used to reduce the level of occupational injuries by reducing or eliminating accidents associated with unforeseen avalanches during the operation of an existing quarry.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141648378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-Speed Steel Technology Substitution in Mining Machinery – an Experimental Study 采矿机械中的高速钢技术替代--一项实验研究

IF 2.2 4区地球科学

Acta Montanistica Slovaca Pub Date : 2024-07-15 DOI: 10.46544/ams.v29i1.05

{"title":"High-Speed Steel Technology Substitution in Mining Machinery – an Experimental Study","authors":"","doi":"10.46544/ams.v29i1.05","DOIUrl":"https://doi.org/10.46544/ams.v29i1.05","url":null,"abstract":"The growth of mineral extraction in countries with a developed mineral resource sector under conditions of external restrictions requires the modernization of the domestic mining machinery – an indispensable condition of which is the replacement of technologies for the production of high-speed steels and machine tools. This research was aimed at experimental studies of microstructure, phase composition and microhardness distribution in the surface layer of the R6M5 high-speed steel samples after laser cutting, cold treatment and laser tempering. It was demonstrated that after laser cutting in the surface layer of the cut there was the carbide dissolution and enrichment of the metal matrix with carbon and alloying components, resulting in an increase of residual austenite content up to 50...60 %. After the cold treatment in liquid nitrogen the content of residual austenite decreased up to 7...9 %. The laser cut surface microhardness increased up to 1000...1100 MPa. At further laser tempering the dispersion hardening processes took place, as a result the V2C carbides appeared in the steel structure amounting to 4.7 %. The microhardness increased up to 10400...10600 MPa. The study showed the possibility of using the high-speed steel laser cutting not only as a separating operation, but also as a hardening treatment. The findings contribute to the technological support for the development of domestic mining machinery in terms of replacing imported high-speed steels and machine tools.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141648481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Weibull distribution as a criterion of emergency levels 以 Weibull 分布作为应急级别的标准

IF 2.2 4区地球科学

Acta Montanistica Slovaca Pub Date : 2024-07-15 DOI: 10.46544/ams.v29i1.19

{"title":"Weibull distribution as a criterion of emergency levels","authors":"","doi":"10.46544/ams.v29i1.19","DOIUrl":"https://doi.org/10.46544/ams.v29i1.19","url":null,"abstract":"In the exploitation of machinery and equipment, one of the most important parameters is the dynamic state of the object. Observing residual processes is the most popular method of assessing the dynamic state. In particular, dynamic residual processes are a carrier of diagnostic information. Measuring the vibrations and noise of working mini-mining machines provides knowledge about the dynamics of the assessed machinery. Many years of knowledge and experience have allowed for the creation of diagnostic procedures. Within most machines used in the industry, the procedures considered standard allow for an effective diagnostic assessment and optimal management of mini-mining machine exploitation. The applicability of these standards is quite wide. However, there are machines with parameters that prevent the application of said standards. Mini-mining machines used in subterranean mining are one of these machines. In the case of diagnostic assessment of continuous miners, chain conveyors, as well as other machinery used in the technological chain, the usage of assessment brackets consistent with adopted standards is incorrect. In the diagnostic assessment of these types of mini-mining machines, an analysis of long-term trends is often used. The determination of acceptable vibration levels is obtained heuristically through observations of the damage up to the state of emergency. In the article, methods of mini mining machines state assessment using models of machine degradation, using Weibull distribution, are presented. The presented method has been used in real results of vibration measurement of underground machinery used in a coal mine. The analyses showed a large effectiveness of the presented method.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141644209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Implementing Lean Manufacturing Method to Achieve an Effective Maintenance System in the Mining Company 在矿业公司实施精益生产方式以实现有效的维护系统

IF 2.2 4区地球科学

Acta Montanistica Slovaca Pub Date : 2024-07-15 DOI: 10.46544/ams.v29i1.14

引用次数: 0

Dynamic Response Characteristics of Foundation of Mined-out Areas under High-speed Railway Load 高速铁路荷载下采空区地基的动态响应特性

IF 2.2 4区地球科学

Acta Montanistica Slovaca Pub Date : 2024-07-15 DOI: 10.46544/ams.v29i1.03

{"title":"Dynamic Response Characteristics of Foundation of Mined-out Areas under High-speed Railway Load","authors":"","doi":"10.46544/ams.v29i1.03","DOIUrl":"https://doi.org/10.46544/ams.v29i1.03","url":null,"abstract":"To reveal the dynamic response characteristics of the foundation of mined-out areas (MOA) under the high-speed railway (HSR) load is important for predicting settlement and safety assessment of the foundation. Taking MOA of Dianshang under the Taiyuan-Jiaozuo HSR as the engineering background, the model experiments and numerical analysis were employed to reveal the dynamic response of both subgrade and the foundation of the HSR, as well as the attenuation law of the acceleration in the overlying strata of the MOA. Results show that within the full frequency range of the HSR load, the dynamic response of the foundation increases with the increase in load frequency. When the depth exceeds 6 m, the dynamic response of the foundation initially increases and subsequently decreases with the increase in load frequency. Contrasted with single-point loading, the superposition effect and moving effect of the HSR load will form a dynamic response superposition zone within 1-4 m below the subgrade, leading to a significant enhancement of the dynamic response of the foundation. Compared to HSR axle load, the driving speed of HSR has a greater impact on the acceleration of both the subgrade and foundation. The obtained conclusions provide a reference for the safety operation of the HSR crossing the MOA","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141647630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0