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Artykuły w czasopismach na temat „MINRES method”

Autor: Grafiati

Data publikacji: 6 września 2023

Data aktualizacji: 25 lipca 2025

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1

Jian, Ling, Shuqian Shen, and Yunquan Song. "Improving the Solution of Least Squares Support Vector Machines with Application to a Blast Furnace System." Journal of Applied Mathematics 2012 (2012): 1–12. http://dx.doi.org/10.1155/2012/949654.

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The solution of least squares support vector machines (LS-SVMs) is characterized by a specific linear system, that is, a saddle point system. Approaches for its numerical solutions such as conjugate methods Sykens and Vandewalle (1999) and null space methods Chu et al. (2005) have been proposed. To speed up the solution of LS-SVM, this paper employs the minimal residual (MINRES) method to solve the above saddle point system directly. Theoretical analysis indicates that the MINRES method is more efficient than the conjugate gradient method and the null space method for solving the saddle point

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2

Chin-Lung Fong, David, and Michael Saunders. "CG Versus MINRES: An Empirical Comparison." Sultan Qaboos University Journal for Science [SQUJS] 16 (April 1, 2012): 44. http://dx.doi.org/10.24200/squjs.vol17iss1pp44-62.

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For iterative solution of symmetric systems the conjugate gradient method (CG) is commonly used when A is positive definite, while the minimum residual method (MINRES) is typically reserved for indefinite systems. We investigate the sequence of approximate solutions generated by each method and suggest that even if A is positive definite, MINRES may be preferable to CG if iterations are to be terminated early. In particular, we show for MINRES that the solution norms are monotonically increasing when A is positive definite (as was already known for CG), and the solution errors are monotonicall

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3

Ogino, Masao, Shin-ichiro Sugimoto, Seigo Terada, Yanqing Bao, and Hiroshi Kanayama. "A Large-Scale Magnetostatic Analysis Using an Iterative Domain Decomposition Method Based on the Minimal Residual Method." Journal of Advanced Computational Intelligence and Intelligent Informatics 16, no. 4 (2012): 496–502. http://dx.doi.org/10.20965/jaciii.2012.p0496.

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This paper describes a large-scale 3D magnetostatic analysis using the Domain Decomposition Method (DDM). To improve the convergence of the interface problem of DDM, a DDM approach based on the Conjugate Residual (CR) method or the MINimal RESidual (MINRES) method is proposed. The CR or MINRES method improved the convergence rate and showed more stable convergence behavior in solving the interface problem than the Conjugate Gradient (CG) method, and reduced computation time for a large-scale problem with about 10 million degrees of freedom.

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4

Li, Xin, Hao Liu, and Jingfu Zhu. "MINRES Seed Projection Methods for Solving Symmetric Linear Systems with Multiple Right-Hand Sides." Mathematical Problems in Engineering 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/357874.

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We consider the MINRES seed projection method for solving multiple right-hand side linear systemsAX=B, whereA∈Rn×nis a nonsingular symmetric matrix,B∈Rn×p. In general, GMRES seed projection method is one of the effective methods for solving multiple right-hand side linear systems. However, when the coefficient matrix is symmetric, the efficiency of this method would be weak. MINRES seed projection method for solving symmetric systems with multiple right-hand sides is proposed in this paper, and the residual estimation is analyzed. The numerical examples show the efficiency of this method.

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5

Luk, Franklin T. "On the Minres Method of Factor Analysis." SIAM Journal on Scientific and Statistical Computing 6, no. 3 (1985): 562–72. http://dx.doi.org/10.1137/0906039.

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Wu, Faxuan, Qinglong He, Yang Li, Bo Han, and Yangfei Wang. "Truncated Newton full waveform inversion method for the human brain imaging." Journal of Physics: Conference Series 2822, no. 1 (2024): 012013. http://dx.doi.org/10.1088/1742-6596/2822/1/012013.

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Abstract It has been shown that full-waveform inversion (FWI) method can be a competitive alternative for medical imaging problems. It offers high-resolution results while delivering the advantages of being fast, safe, portable, and affordable, compared to magnetic resonance imaging (MRI) and x-ray computed tomography. However, to the best of our knowledge, FWI applications in medical imaging only use the first-order derivative information. In this case, the high parameter contrasts between different tissues of human body and multi-scatterings problems may lead FWI to local minima. Thus, we pr

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7

Pestana, J., and A. J. Wathen. "A Preconditioned MINRES Method for Nonsymmetric Toeplitz Matrices." SIAM Journal on Matrix Analysis and Applications 36, no. 1 (2015): 273–88. http://dx.doi.org/10.1137/140974213.

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8

Soodhalter, Kirk M. "A block MINRES algorithm based on the band Lanczos method." Numerical Algorithms 69, no. 3 (2014): 473–94. http://dx.doi.org/10.1007/s11075-014-9907-z.

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9

Xie, Ze-Jia, Xiao-Qing Jin, and Zhi Zhao. "A Convergence Analysis of the MINRES Method for Some Hermitian Indefinite Systems." East Asian Journal on Applied Mathematics 7, no. 4 (2017): 827–36. http://dx.doi.org/10.4208/eajam.181016.300517h.

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AbstractSome convergence bounds of the minimal residual (MINRES) method are studied when the method is applied for solving Hermitian indefinite linear systems. The matrices of these linear systems are supposed to have some properties so that their spectra are all clustered around ±1. New convergence bounds depending on the spectrum of the coefficient matrix are presented. Some numerical experiments are shown to demonstrate our theoretical results.

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10

Muzhinji, Kizito, Stanford Shateyi, and Sandile Motsa. "The Mixed Finite Element Multigrid Preconditioned MINRES Method for Stokes Equations." Journal of Applied Fluid Mechanics 9, no. 3 (2016): 1285–96. http://dx.doi.org/10.18869/acadpub.jafm.68.228.22805.

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11

Kanayama, Hiroshi, Masao Ogino, Shin-Ichiro Sugimoto, and Seigo Terada. "Large-Scale Magnetostatic Domain Decomposition Analysis Based on the MINRES Method." IEEE Transactions on Magnetics 49, no. 5 (2013): 1565–68. http://dx.doi.org/10.1109/tmag.2013.2238612.

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12

Choi, Sou-Cheng T., Christopher C. Paige, and Michael A. Saunders. "MINRES-QLP: A Krylov Subspace Method for Indefinite or Singular Symmetric Systems." SIAM Journal on Scientific Computing 33, no. 4 (2011): 1810–36. http://dx.doi.org/10.1137/100787921.

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13

CHANG, S. L., and C. S. CHIEN. "A MULTIGRID-LANCZOS ALGORITHM FOR THE NUMERICAL SOLUTIONS OF NONLINEAR EIGENVALUE PROBLEMS." International Journal of Bifurcation and Chaos 13, no. 05 (2003): 1217–28. http://dx.doi.org/10.1142/s0218127403007175.

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We study numerical methods for solving nonlinear elliptic eigenvalue problems which contain folds and bifurcation points. First we present some convergence theory for the MINRES, a variant of the Lanczos method. A multigrid-Lanczos method is then proposed for tracking solution branches of associated discrete problems and detecting singular points along solution branches. The proposed algorithm has the advantage of being robust and can be easily implemented. It can be regarded as a generalization and an improvement of the continuation-Lanczos algorithm. Our numerical results show the efficiency

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14

Ogino, Masao, Shin-ichiro Sugimoto, and Hiroshi Kanayama. "703 A Large-scale Nonlinear Magnetostatic Analysis using a DDM-based MINRES method." Proceedings of The Computational Mechanics Conference 2012.25 (2012): 318–19. http://dx.doi.org/10.1299/jsmecmd.2012.25.318.

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15

Kanayama, H. "An Industrial Application of Thermal Convection Analysis." International Journal of Computational Methods 13, no. 02 (2016): 1640005. http://dx.doi.org/10.1142/s0219876216400053.

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A coupling analysis of thermal convection problems is performed in this work. By approximating the material derivative along the trajectory of fluid particle, the characteristic curve (CC) method can be considered. The most attractive advantage of this method is the symmetry of the linear system, which enables some classic symmetric linear iterative solvers, like the conjugate gradient (CG) method or the minimal residual (MINRES) method, to be used to solve the interface problem of the domain decomposition system. An application to industrial problems is demonstrated to show the effectiveness

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16

Abdeslam, El Akkad. "Analysis of estimators for Stokes problem using a mixed approximation." Boletim da Sociedade Paranaense de Matemática 39, no. 6 (2021): 105–28. http://dx.doi.org/10.5269/bspm.41354.

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In this work, we introduce the steady Stokes equations with a new boundary condition, generalizes the Dirichlet and the Neumann conditions. Then we derive an adequate variational formulation of Stokes equations. It includes algorithms for discretization by mixed finite element methods. We use a block diagonal preconditioners for Stokes problem. We obtain a faster convergence when applying the preconditioned MINRES method. Two types of a posteriori error indicator are introduced and are shown to give global error estimates that are equivalent to the true discretization error. In order to evalua

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17

Muzhinji, K., S. Shateyi, and S. S. Motsa. "The Mixed Finite Element Multigrid Method for Stokes Equations." Scientific World Journal 2015 (2015): 1–12. http://dx.doi.org/10.1155/2015/460421.

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The stable finite element discretization of the Stokes problem produces a symmetric indefinite system of linear algebraic equations. A variety of iterative solvers have been proposed for such systems in an attempt to construct efficient, fast, and robust solution techniques. This paper investigates one of such iterative solvers, the geometric multigrid solver, to find the approximate solution of the indefinite systems. The main ingredient of the multigrid method is the choice of an appropriate smoothing strategy. This study considers the application of different smoothers and compares their ef

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18

Gatica, Gabriel N., and Norbert Heuer. "A Preconditioned MINRES Method for the Coupling of Mixed-FEM and BEM for Some Nonlinear Problems." SIAM Journal on Scientific Computing 24, no. 2 (2002): 572–96. http://dx.doi.org/10.1137/s106482750138887x.

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19

Hon, Sean, Jiamei Dong, and Stefano Serra-Capizzano. "A Preconditioned MINRES Method for Optimal Control of Wave Equations and its Asymptotic Spectral Distribution Theory." SIAM Journal on Matrix Analysis and Applications 44, no. 4 (2023): 1477–509. http://dx.doi.org/10.1137/23m1547251.

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20

Shi, Shengzhu, Dazhi Zhang, and Jiamin Li. "Efficient Stochastic Galerkin Spectral Methods for Optimal Control Problems Constrained by Fractional PDEs with Uncertain Inputs." Journal of Sensors 2022 (July 22, 2022): 1–16. http://dx.doi.org/10.1155/2022/6369492.

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This paper is devoted to designing fast solvers and efficient preconditioners for the optimal control problems (OCPs) constrained by stochastic fractional elliptic equations. We first prove the existence and uniqueness of the stochastic optimal control solution and then derive the stochastic optimality system. For the numerical approximation, we use the stochastic Galerkin spectral methods, which apply the stochastic Galerkin method for the discretization of random variables and employ the spectral-Galerkin approach for the approximation of spatial variables. To solve the large coupled saddle-

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21

Gao, Haoxiang, Rong Yi, Tongqing Li, Miaozhe Shen, Jin Li, and Hongyu Duan. "A hybrid MINres and hidden layer traversal method to improve extreme learning machine for electric load forecasting." IET Conference Proceedings 2024, no. 33 (2025): 60–66. https://doi.org/10.1049/icp.2025.0343.

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22

Liu, Lijun, and Masao Ogino. "Finite element analysis of high-frequency electromagnetic fields using an iterative substructuring method based on CS-MINRES-QLP." Proceedings of The Computational Mechanics Conference 2017.30 (2017): 152. http://dx.doi.org/10.1299/jsmecmd.2017.30.152.

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23

Yang, Li, Xue Wang, Junqi Zhu, Liyan Sun, and Zhiyuan Qin. "Comprehensive Evaluation of Deep Coal Miners’ Unsafe Behavior Based on HFACS-CM-SEM-SD." International Journal of Environmental Research and Public Health 19, no. 17 (2022): 10762. http://dx.doi.org/10.3390/ijerph191710762.

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The unsafe behavior of miners seriously affects the safety of deep mining. A comprehensive evaluation of miners’ unsafe behavior in deep coal mines can prevent coal mine accidents. This study combines HFACS-CM, SEM, and SD models to evaluate miners’ unsafe behaviors in deep coal mining. First, the HFACS-CM model identifies the risk factors affecting miners’ unsafe behavior in deep coal mines. Second, SEM was used to analyze the interaction between risk factors and miners’ unsafe behavior. Finally, the SD model was used to simulate the sensitivity of each risk factor to miners’ unsafe behavior

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24

Tong, Ruipeng, Yanwei Zhang, Yunyun Yang, Qingli Jia, Xiaofei Ma, and Guohua Shao. "Evaluating Targeted Intervention on Coal Miners’ Unsafe Behavior." International Journal of Environmental Research and Public Health 16, no. 3 (2019): 422. http://dx.doi.org/10.3390/ijerph16030422.

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Miners’ unsafe behavior is the main cause of roof accidents in coal mines, and behavior intervention plays a significant role in reducing the occurrence of miners’ unsafe behavior. However, traditional behavior intervention methods lack pertinence. In order to improve the intervention effect and reduce the occurrence of coal mine roof accidents more effectively, this study proposed a targeted intervention method for unsafe behavior. The process of targeted intervention node locating was constructed, and based on the analysis of 331 coal mine roof accidents in China, three kinds of targeted int

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25

Joksimović, Bojan, Biljana Mijović, Biljana Čančar, et al. "Pneumoconiosis among miners in coal mines." Биомедицинска истраживања 12, no. 2 (2021): 184–92. http://dx.doi.org/10.5937/bii2102184j.

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Pneumoconiosis of workers in brown coal mines is an occupational disease, a global public health problem and a serious disease of the lung parenchyma. If it is not prevented, it leads to irreversible changes in the lungs with complications. The disorder occurs after prolonged exposure to coal dust containing high concentration of free crystalline silica. Data in literature regarding its health impact on people working in coal mines are relatively scarce. Recently, there has been an increase in miners' pneumoconiosis, which requires a stricter policy to protect workers in the mines. There are t

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Joksimović, Bojan, Biljana Mijović, Biljana Čančar, et al. "Pneumoconiosis among miners in coal mines." Биомедицинска истраживања 12, no. 2 (2021): 184–92. http://dx.doi.org/10.5937/bii2102184j.

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Pneumoconiosis of workers in brown coal mines is an occupational disease, a global public health problem and a serious disease of the lung parenchyma. If it is not prevented, it leads to irreversible changes in the lungs with complications. The disorder occurs after prolonged exposure to coal dust containing high concentration of free crystalline silica. Data in literature regarding its health impact on people working in coal mines are relatively scarce. Recently, there has been an increase in miners' pneumoconiosis, which requires a stricter policy to protect workers in the mines. There are t

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27

Pach, Grzegorz, Zenon Różański, Paweł Wrona, Adam Niewiadomski, Pavel Zapletal, and Václav Zubíček. "Reversal Ventilation as a Method of Fire Hazard Mitigation in the Mines." Energies 13, no. 7 (2020): 1755. http://dx.doi.org/10.3390/en13071755.

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Reversal ventilation is one of prevention methods against fire hazard in underground mines, but it is not recommended for the mines where methane is present. The authors introduce the new method of reversal and by conducting numerical simulations they prove that it allows to keep methane at the acceptable level during miners escape. However, it requires connection between the subnetworks of the main ventilation fans. It was also shown, that by using the method some escape routes will be shortened. It is possible to apply this method in the mines where the fans and stoppings are fully controlle

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Di, Hongxi, Shujahat Ali, and Yiming Lu. "Defining the Primary Work Stress Factors of Chinese Coal Miners—A Mixed-Methods Study." International Journal of Environmental Research and Public Health 19, no. 21 (2022): 14593. http://dx.doi.org/10.3390/ijerph192114593.

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Background: Studies have indicated that coal miners in China have higher levels of perceived job stress. However, few studies have investigated the work stress structure of coal miners. Objective: Our study focused on the work stress of coal miners in China, with a primary aim to determine the work stress structure of coal miners in China using a mixed-methods approach. Methods: Semi-structured interviews were performed with thirty-three people (team leaders and frontline coal miners) conducted with participants from various state-owned large- and medium-sized coal mines in China. Grounded the

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29

Gogo, Volodymy, and Boris Kobylyansky. "ANALYSIS OF ERGATIC SYSTEM FACTORS OF OCCUPATIONAL MINERS SAFETY OF UKRAINE." JOURNAL of Donetsk mining institute, no. 2 (2020): 194–205. http://dx.doi.org/10.31474/1999-981x-2020-2-194-205.

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Purpose. The purpose of the article is to form an anthropocentric ergatic system of labor safety of coal miners and to determine its main factors, factors, components and characteristics to increase the effectiveness of measures to protect their labor, especially in the deep mines of Donbas. The research methodology is based on general scientific methods of cognition – empirical (observation of real production processes, factors and factors in coal mines, description of miners ‘actions in accordance with labor protection measures, etc.) and theoretical (analysis, synthesis, generalization, cla

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30

Wang, Xinping, Cheng Zhang, Jun Deng, Chang Su, and Zhenzhe Gao. "Analysis of Factors Influencing Miners’ Unsafe Behaviors in Intelligent Mines using a Novel Hybrid MCDM Model." International Journal of Environmental Research and Public Health 19, no. 12 (2022): 7368. http://dx.doi.org/10.3390/ijerph19127368.

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Coal mine accidents seriously affect people’s safety and social development, and intelligent mines have improved the production safety environment. However, safety management and miners’ work in intelligent mines face new changes and higher requirements, and the safety situation remains challenging. Therefore, exploring the key influencing factors of miners’ unsafe behaviors in intelligent mines is important. Our work focuses on (1) investigating the relationship and hierarchy of 20 factors, (2) using fuzzy theory to improve the decision-making trial and evaluation laboratory (DEMATEL) method

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31

Liu, Kai, Xin Sun, Wei-Jiang Hu, et al. "Occupational Exposure to Silica Dust and Silicosis Risk in Chinese Noncoal Mines: Qualitative and Quantitative Risk Assessment." JMIR Public Health and Surveillance 10 (September 2, 2024): e56283. http://dx.doi.org/10.2196/56283.

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Background Despite increasing awareness, silica dust–induced silicosis still contributes to the huge disease burden in China. Worryingly, recent silica dust exposure levels and silicosis risk in Chinese noncoal mines remain unclear. Objective We aimed to determine recent silica dust exposure levels and assess the risk of silicosis in Chinese noncoal mines. Methods Between May and December 2020, we conducted a retrospective cohort study on 3 noncoal mines and 1 public hospital to establish, using multivariable Cox regression analyses, prediction formulas of the silicosis cumulative hazard ratio

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Okoronkwo, Scholastica, Michael Chinonso Ogba, and Cyril Chibuzo Otu. "ASSESSMENT OF THE ROLE OF MINING REGULATORY FRAMEWORKS IN THE ENFORCEMENT OF HEALTH AND SAFETY REGULATIONS FOR ARTISANAL AND SMALL SCALE MINING IN NIGERIA." GEO-STUDIES FORUM 10, no. 1 (2024): 1–17. https://doi.org/10.5281/zenodo.14739008.

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This study is concerned with the impacts of Nigeria’s regulatory provisions like the Mineral and Mining Act of 2007 on regulation of artisanal and small scale mining in the country, with specific emphasis on North-central Nigeria. It was aimed at ascertaining whether the efforts of Nigeria’s the Mines Inspectorate Department led to adequate adherence to health and safety mining regulations amongst artisanal and small-scale miners in North-Central Nigeria. The study adopted the Critical Theory of Security and Rational Model of Policy Implementation. Both&nbs

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Lei, Ting, Jizu Li, Yong Yan, and Yanyu Guo. "The Impact of Job Insecurity on Miner Safety Behavior—A Study Based on SEM and fsQCA." Applied Sciences 14, no. 18 (2024): 8103. http://dx.doi.org/10.3390/app14188103.

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The intelligent transformation of coal mines is one of the current trends in developing China’s coal mining industry. To explore the impact of miners’ insecurity on their safety behavior under this trend, miners’ psychological resilience was introduced as the mediating variable, and team safety climate was used as the moderating variable to conduct a questionnaire survey of frontline miners. The data analysis was carried out using descriptive statistics, correlation analysis, structural equation modeling (SEM), and the fsQCA method to explore the impact of job insecurity on miners’ risk behavi

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Działak, Paulina, Jacek Karliński, and Eugeniusz Rusiński. "Method of operator safety assessment for underground mobile mining equipment." E3S Web of Conferences 29 (2018): 00009. http://dx.doi.org/10.1051/e3sconf/20182900009.

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The paper presents a method of assessing the safety of operators of mobile mining equipment (MME), which is adapted to current and future geological and mining conditions. The authors focused on underground mines, with special consideration of copper mines (KGHM). As extraction reaches into deeper layers of the deposit it can activate natural hazards, which, thus far, have been considered unusual and whose range and intensity are different depending on the field of operation. One of the main hazards that affect work safety and can become the main barrier in the exploitation of deposits at grea

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Pisarev, Viktor S., and Andrei A. Basargin. "METHODS OF DUST CONTROL ON OPEN-CAST MINE." Interexpo GEO-Siberia 1, no. 1 (2020): 15–21. http://dx.doi.org/10.33764/2618-981x-2020-1-1-15-21.

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The practice of dust control on coal mines and technological roads both in Russia and abroad shows that reducing dust content, to the maximum permissible concentrations is a very difficult engineering task. To combat dust in open pit mines, various methods and techniques are used. The study of progressive dust control agents will allow normalizing sanitary and hygienic conditions at mining enterprises, and reducing the level of occupational diseases of miners. The article deals with the types of dust and the fact that a large amount of dust accompanies the processes of extraction and transport

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Nandi, Subroto, Sarang V. Dhatrak, Debasis M. Chaterjee, Umesh L. Dhumne, and Shilpa V. Ingole. "A study on morbidity profile of lignite miners in western India." International Journal of Occupational Safety and Health 5, no. 1 (2017): 14–16. http://dx.doi.org/10.3126/ijosh.v5i1.16630.

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Background: Mining is a hazardous occupation in which workers are exposed to adverse conditions. In India, there are nine working lignite mines, producing about 30 million tons annually. The mines are located in the states of Tamilnadu, Rajasthan and Gujrat. Objective: The present study was carried out in a lignite mine in India to determine the health status of the miners. Methods: 143 workers engaged actively in mining activities were included. The health status of the employees was evaluated by well defined medical questionnaire along with pulmonary function test (PFT) and Audiometry. Resul

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Kostenko, Viktor, Olha Bohomaz, Tetiana Kostenko, and Oleksii Kutniashenko. "IMPROVEMENT OF MICROCLIMATIC WORKING CONDITIONS FOR MINERS IN DEEP MINES." Rudarsko-geološko-naftni zbornik 39, no. 3 (2024): 145–52. http://dx.doi.org/10.17794/rgn.2024.3.11.

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The purpose of the paper is to substantiate possible ways to improve microclimatic conditions at workplaces in deep coal mines by controlling air moisture content. To improve the microclimatic conditions at underground workplaces, the authors propose a unit for dehumidification of air in a blind mine working, which is designed to remove moisture contained in mine air in the form of steam. The results of the calculations showed that by air dehumidification in a blind working, which is supplied by a local ventilation unit at a temperature of 24°C, and then cooled below the dew point and supplied

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Kulemin, Yu E., V. I. Minina, M. Yu Sinitsky, Ya A. Savchenko, and V. P. Volobaev. "CONDITIONS OF THE CHROMOSOMAL DAMAGE IN COAL MINERS." Hygiene and sanitation 96, no. 5 (2019): 455–59. http://dx.doi.org/10.18821/0016-9900-2017-96-5-455-459.

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Working in coal mines, despite all achievements of modern science and technology, still remains among the most dangerous occupations to the health. The review of researches about the chromosomal damage in coal miners was performed. We searched information in the following databases - PubMed, http://www.sciencedirect.com and in the electronic library http://elibrary.ru with the use of the search strategy adopted in the Cochrane Collaboration. Inclusion criteria were: 1) randomized, controlled original researches; 2) researches performed in 1993-2016 where coal miners were the object of the stud

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Obadia, Paul Musa, Joseph Pyana Kitenge, Trésor Carsi Kuhangana, et al. "SS08-02 BIOMONITORING OF TRACE METALS IN BLOOD AND URINE AMONG ARTISANAL MINERS IN THE DEMOCRATIC REPUBLIC OF THE CONGO." Occupational Medicine 74, Supplement_1 (2024): 0. http://dx.doi.org/10.1093/occmed/kqae023.0087.

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Abstract Introduction In the Democratic Republic of the Congo, artisanal and small-scale mining employ an estimated 200,000 people, and over a million are indirectly involved through trade and transport. We assessed metal exposure in artisanal miners involved in mining three types of commodities (copper-cobalt, tin, diamonds). Materials and Methods In cross-sectional studies (March 2021 - August 2022), we measured trace metals by Inductive Coupled Plasma Mass Spectrometry (ICP-MS) in blood (µg/L) and urine (µg/g creatinine) in convenience samples of miners (mostly males) extracting copper-coba

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Chen, Tiehua, Wenyi Hu, Jingpin Liu, and Hongxia Li. "Effect of Work Values on Miners’ Safety Behavior: The Mediating Role of Psychological Empowerment and the Moderating of Role of Safety Climate." Sustainability 14, no. 15 (2022): 9553. http://dx.doi.org/10.3390/su14159553.

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Although numerous studies have confirmed the important influence of values on employees’ behavior, less is known about the relationship between work values and miners’ safe behavior. Based on self-verification theory and trait activation theory, this study constructed a structural equation model to explore the effect of work values on miners’ safety behavior, using psychological empowerment as a mediating variable and safety climate as a moderating variable. Data were collected from 207 miners in three coal mines in China. The model was examined using a hierarchical regression analysis and the

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Korotenko, Olga Yu, Egor S. Filimonov, Nikolay I. Panev, and Evgeniya V. Ulanova. "Diastolic function of the right ventricle in workers of coal mining enterprises in the South of Kuzbass." Russian Journal of Occupational Health and Industrial Ecology 61, no. 6 (2021): 371–78. http://dx.doi.org/10.31089/1026-9428-2021-61-6-371-378.

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Introduction. Diastolic function is characterized by the earliest changes in the ventricular myocardium, rather than violations of their contractility, and can be used in the algorithm of prophylactic measures to prevent fatal cardiovascular events, including in people working at industrial enterprises. The objective of the study was to assess the indices of diastolic function of the right ventricle in workers of the coal mining industry in the South of Kuzbass. Materials and methods. Under the conditions of a periodic medical examination, we surveyed 337 people without lung diseases and coron

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Cheberyachko, Sergej I., Dmitrij I. Radchuk, and Oleg V. Deryugin. "The effectiveness of the miners’ respirators." Hygiene and sanitation 100, no. 2 (2021): 129–34. http://dx.doi.org/10.47470/0016-9900-2021-100-2-129-134.

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Introduction. Dust is one of the main harmful factors in underground coal mining. The dust concentration in the coal mines remains high due to the imperfection of the used technologies, increasing the pneumoconiosis risk in miners. Respirators are the last means of protection, but information about their effectiveness is contradictory. Aim. Assess the effectiveness of individual respiratory protective devices in the coal mines. Material and methods. The protection factor (PF), the ratio of the dust concentration outside the mask to the concentration under the mask) is used to assess respirator

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Abhishek, Kumar Tripathi*1 &. Ramesh Kant 2. "UTILITY OF CONTINUOUS MINER SYSTEM IN UNDERGROUND COAL MINES." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 8, no. 3 (2019): 241–45. https://doi.org/10.5281/zenodo.2608330.

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The usage of coal in the Indian market scenario plays a vital role in power generation and other industries. The application of continuous miners in India coal mining could be a good choice for the improvement of coal production and productivity. Also, the utility of continuous miners’ system in underground coal mining is appropriate technology. The continuous miner works in a dark, dusty, and cramped mines, which improves the productivity of the coal winning process. Even a slight improvement in productivity can amount to a few hundreds of thousands of Rupees of additional revenue per m

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Gorbanev, S. A., S. A. Syurin, and N. M. Frolova. "Working conditions and occupational pathology of coal miners in the Arctic." Russian Journal of Occupational Health and Industrial Ecology, no. 8 (September 25, 2019): 452–57. http://dx.doi.org/10.31089/1026-9428-2019-59-8-452-457.

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Introduction. Due to the impact of adverse working conditions and climate, workers in coal-mining enterprises in the Arctic are at increased risk of occupational diseases (OD).The aim of the study was to study the working conditions, causes, structure and prevalence of occupational diseases in miners of coal mines in the Arctic.Materials and methods. Th e data of social and hygienic monitoring “Working conditions and occupational morbidity” of the population of Vorkuta and Chukotka Autonomous District in 2007–2017 are studied.Results. It was established that in 2007–2017 years, 2,296 ODs were

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Hasibur Zaman Haque, Sanjoy Kumar Sadhukhan, Jayita Pal, and Nandu Krishna. "A study on chronic obstructive pulmonary disease and its determinants among underground coal mine workers in Bankola area, Durgapur, West Bengal." International Journal Of Community Medicine And Public Health 11, no. 9 (2024): 3608–15. http://dx.doi.org/10.18203/2394-6040.ijcmph20242566.

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Background: Chronic obstructive pulmonary disease is a leading cause of morbidity and mortality worldwide that effectuate an economic and social burden that is both considerable and progressive. Mortality from respiratory disease remains an important occupational hazard among coal miners. Inhalation of coal mine dust is known to cause several respiratory diseases including COPD. The current study aimed to estimate the prevalence of COPD among coal miners and to find out the predictors of the same in Bankola Area, Durgapur, West Bengal. Methods: A cross-sectional study was conducted among 315 c

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Li, Jing, Yong Yang, Hongmei Ge, Yong Wang, and Li Zhao. "Generative adversarial nets in laser-induced fluorescence spectrum image recognition of mine water inrush." International Journal of Distributed Sensor Networks 15, no. 10 (2019): 155014771988489. http://dx.doi.org/10.1177/1550147719884894.

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Water inrush occurred in mines, threatens the safety of working miners which triggers severe accidents in China. To make full use of existing distinctive hydro chemical and physical characteristics of different aquifers and different water sources, this article proposes a new water source discrimination method using laser-induced fluorescence technology and generative adversarial nets. The fluorescence spectrum from the water sample is stimulated by 405-nm lasers and improved by recursive mean filtering method to alleviate interference and auto-correlation to enhance the feature difference. Ba

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Grover, A. K. "The Ancient Metal Miners of Vadnagar, Delwara and Mandli, Western India." Journal of the Geological Society of India 100, no. 2 (2024): 233–40. http://dx.doi.org/10.17491/jgsi/2024/173822.

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Abstract India is dotted with myriads of ancient metal mines or old workings in almost all the states, some of which have great antiquity (&gt;4,000 yrs) and reaching considerable depth (upto 260 m). These stand as testimony to the mining skill of our ancestors, especially in the absence of mining tools. Several of these old metal mines, when explored by modern methods have yielded sizable deposits e.g. Hutti, Bhukia (gold), Rajpura-Dariba (multi-metal), Agucha (lead-zinc-silver), Agnigundala (lead-copper), Khetri (copper), etc. A few ancient Indian treatises describe the processes of meta

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Schubauer-Berigan, Mary. "O2E.2 From high-dose occupational to low-dose residential exposures in radon epidemiology: how high-quality exposure assessment ties it all together." Occupational and Environmental Medicine 76, Suppl 1 (2019): A20.2—A20. http://dx.doi.org/10.1136/oem-2019-epi.53.

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Since the 1950s, formal epidemiologic investigations among uranium miners have yielded valuable information about lung cancer hazard from exposure to radon progeny. Early cohort studies used thousands of measurements of radon progeny in mines and a job-exposure matrix approach to assign dose estimates to miners. Over time, exposure estimation in uranium and other underground mines has become increasingly refined, making possible 25 years ago a landmark pooled study that permitted quantitative risk characterization across 11 populations of miners. More recently, case-control studies of resident

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Haitham Kanam, Omer, and Maher Obaid Ahmed. "A review on underground mine ventilation system." Journal of Mines, Metals and Fuels 69, no. 2 (2021): 62. http://dx.doi.org/10.18311/jmmf/2021/27334.

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In the field of mines, there are dozens of methods concerned with the optimization of ventilation system in underground mines and how bad ventilation system is playing a major effect on miners and mine’s activities. The ventilation system is considered very important because it consumed high energy of mines of total power consumption. This paper is a review of previous studies, which have been done before on design of ventilation system and its optimization methods like, using of software tools to simulate the numerical equations based on the pressure, temperature, flow rate, and other effecte

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Jabulani, Matsimbe, Ghambi Steven, and Samson Abdul. "Application of the BowTie Method in Accident Analysis: Case of Kaziwiziwi Coal Mine." Engineering and Technology Quarterly Reviews 3, no. 4 (2020): 127–36. https://doi.org/10.5281/zenodo.4387214.

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A BowTie is a diagram illustrating proactive and reactive risk management at any working environment. This case study applied the bowtie method to provide a simple visual analysis of the hazards that caused fatal accidents at Kaziwiziwi coal mine on 2nd November 2012 and 15th November 2019. Two coal miners were killed on the spot and others injured due to failure of a bucket hoisting system and hanging rock fall. The authors demonstrated that the bowtie method is an effective visualization tool that can be used to analyze the hazard, top event, threats, consequences, barriers and escalation fa

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