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1
Jelen, Jakub. "Mining Heritage and Mining Tourism". Czech Journal of Tourism 7, n. 1 (1 giugno 2018): 93–105. http://dx.doi.org/10.1515/cjot-2018-0005.
Abstract (sommario):
Abstract The mining industry leaves behind a large number of tangible or intangible remains. A part of them can be used by different actors as a mining heritage. Specific cultural or social values and meanings, which remind of the importance of mining in the past and today, are represented through this mining heritage. To preserve them, the heritage must be passed to future generations. One of the ways is mining tourism. However, the relation between the mining heritage and tourism is not simple as the complex mining heritage has many specific features that differ from the traditional tourist attractions and conceal many pitfalls. The aspects of authenticity or approaches to heritage interpretation are also important.
2
Scarisbrick, D. "Response to Dr Gibson's article; mining remains a hazardous occupation". Occupational Medicine 62, n. 3 (1 aprile 2012): 229. http://dx.doi.org/10.1093/occmed/kqs019.
3
Gündem, Can Yümni. "Earliest Mule Remains from Early Bronze Age Central Anatolia". Animals 14, n. 10 (7 maggio 2024): 1397. http://dx.doi.org/10.3390/ani14101397.
Abstract (sommario):
This paper discusses the discoveries of early donkey and the earliest mule remains in Central Anatolia from the site Derekutuğun. This site represents the remains of a village dating back to the Early Bronze Age and Assyrian Trade Colonies period, associated with mining. The archaeofaunal assemblage was studied by the author and his team using classical archaeozoological methods. The dental remains of the Equidae found at Derekutuğun have been re-examined and are described in this article. The dental evidence indicates that donkeys, and possibly the earliest mules ever found in Central Anatolia, were kept at this site. Although the paper is based on the archaeozoological remains, written sources from the period also support the faunal identification. Derekutuğun was a small settlement that specialized in processing copper ore, and which was an important hub for a trade network because of its extensive mining and extraction operations.
4
Myazin, VP, II Petukhova, LV Shumilova e AA Balagurov. "Development of the resource conservation concept of non-metallic minerals and remains of tailings". IOP Conference Series: Earth and Environmental Science 991, n. 1 (1 febbraio 2022): 012042. http://dx.doi.org/10.1088/1755-1315/991/1/012042.
Abstract (sommario):
Abstract High technological loss of valuable ingredient during sand washing and low efficiency of waste use as the secondary raw materials reduces value for alluvial gold mining. It is proposed to improve the efficiency of combined low-waste technological schemes for free fine gold particles extraction and non-metallic clay and pebble products separation during mineral processing of hard- cleaning metalliferous sands. It is technological assessment of dump integrated use schemes for resource-saving technologies development which are used in gold mining objects. The purpose of using such technologies is producing construction materials and articles, road building, impervious screens making.
5
Pawełczyk, Fatima, Agnieszka Bolik, Bartłomiej Błachut, Anna Kamińska, Magdalena Opała-Owczarek, Ireneusz Malik, Michał Wojcik, Zofia Zakrzewska, Zbigniew Pawlak e Grzegorz Poręba. "Development of Chronology for Historical Mining Shaft Remains in the Vicinity of Tarnowskie Góry Based on Radiocarbon, Luminescence and Dendrochronological Dating". Geochronometria 50, n. 1 (1 gennaio 2023): 81–90. http://dx.doi.org/10.2478/geochr-2023-0004.
Abstract (sommario):
Abstract This study focused on determining the age of sediments found in the remains of historical mining in the post-exploitation field in Tarnowskie Góry, Poland. The limited historical sources indicated that lead ore and silver were mined there from the 12th to 20th centuries. The research utilised radiocarbon dating, optically stimulated luminescence (OSL) and fallout radioisotopes analysis to establish a chronology of the mining remains. Excavations were conducted on three historical mining shafts. In one of them, remains of old construction wood were found. Radiocarbon dating yielded 12 results, with the majority falling within the range of 1435 cal AD to 1645 cal AD. Two results were significantly older and covered the period of the beginnings of the Polish State. OSL dating provided results ranging from 2.5 ka BP to 216 ka BP, a time range much older than that indicated by radiocarbon dates. The OSL ages were found to be greatly overestimated, indicating that the luminescence signal was not reset during the redeposition of sediments. While the obtained results provided a preliminary chronology of the study site, further detailed research, especially regarding the older samples, is necessary to enhance our understanding of the mining history in the area.
6
Kondratiev, V. B. "Covid-19 and Mining industry". Mining Industry (Gornay Promishlennost), n. 5/2020 (20 ottobre 2020): 10–18. http://dx.doi.org/10.30686/1609-9192-2020-5-10-18.
Abstract (sommario):
The COVID-19 pandemic has affected the commodity markets and mining industry around the world in different ways. Mining company’s operations have been hit by coronavirus outbreaks and government-mandated production stops. Demand for many commodities remains low. This paper examines the potential long-term impact of the COVID-19 pandemic on future commodity demand, mining prospects, as well as tactical and strategic steps by mining companies to overcome the current crisis quickly and effectively.
7
Hermis, Hermis, Sri Mulyati, M. Prayogie Aulia, Ichwana Ichwana, Silmina Simina e Nasrul Arahman. "Remediation of Remains Place Gold Mining Land Using Boiler Ash and Sludge from Palm Oil Liquid Waste Processing". BIO Web of Conferences 89 (2024): 01008. http://dx.doi.org/10.1051/bioconf/20248901008.
Abstract (sommario):
The activity of placer gold mining has ruined the ecosystem by disturbing the upper soil layers, contaminating waterways, and leading to sedimentation downstream. This study is being carried out in order to improve soil quality in Tanoh Mirah Village, Sungai Mas Subdistrict, West Aceh Regency, Aceh Province, Indonesia. The main objective is to explore the impact of applying boiler ash and sludge from the palm oil liquid waste processing on enhancing the fertility of soil in areas previously used for mining activites. Infertile soil samples from the remains mining site were treated with a specific composition of boiler ash and sludge, placed in 5 kg plastic containers, and stored for 15 days. Subsequently, soil pH, accessible phosphorus (P), organic carbon (C), total nitrogen (N), and exchangeable potassium (K) analyses were performed. The research findings demonstrate that after the remediation treatment, soil quality improved significantly. The soil's organic carbon content increased from 0.42% to 2.92% after applying 1,500 grams of sludge. The total nitrogen level increased from 0.02%. to 0.2% after treated with 1,500 grams of sludge, and 500 grams of boiler ash. The phosphorus content of the soil increased up to 123.13 mg/kg from original condition of 1.3 mg/kg, when 1,500 grams of boiler ash were added. In summary, boiler ash and sludge remain from the palm oil industry’s waste processing activities have the potential to be used for enhacing the quality of soil damaged by placer gold mining processes.
8
Xu, Gang, Yaping Hou, Hongwei Jin e Zhongwei Wang. "Study on Source Identification of Mixed Gas Emission and Law of Gas Emission Based on Isotope Method". Energies 16, n. 3 (23 gennaio 2023): 1225. http://dx.doi.org/10.3390/en16031225.
Abstract (sommario):
It is of great significance to obtain the source of mixed gas emission from the working face and the law of gas emission from each coal seam for the targeted implementation of gas control measures. Based on the principle that the hydrocarbon isotope values of gas in different coal seams have significant variability, a hydrocarbon isotope method for identifying the source of gas emission is proposed. Taking Pingmei No. 6 Coal Mine as the study area, the distribution characteristics of each value were obtained by testing the values of carbon and hydrogen isotopes in the gas of mined coal seams and adjacent coal seams; by testing the hydrocarbon isotope value of CH4 in the mixed gas of coal seam, the proportion of gas emission in each coal seam is determined and the law of gas emission in each coal seam is studied. The results show that the variation law of the proportion of gas emission in each coal seam can be divided into three stages: the dominant stage of gas emission in the mining layer (stage I), the stage of gas emission in the long-distance adjacent coal seam (stage II), and the dynamic equilibrium stage of gas emission in each coal seam (stage III). In the process of working face mining, the amount of gas emission in the mining layer remains in a small fluctuation state, and the proportion of gas emission decreases rapidly in stage I and stage II, and remains stable in stage III; the amount of gas emission and the proportion of gas emission in adjacent coal seams increase rapidly in stage I and stage II, and remain stable in stage III; the mixed gas emission of the working face increases rapidly in stage I and stage II, and remains stable in stage III. The calculation formula of the gas emission rate of the adjacent coal seam is established; during the development of the height of the mining fractured zone, the gas emission rate of the adjacent coal seam increases exponentially, and the gas emission ratio and gas emission amount of the adjacent coal seam increase; after the height of mining fracture zone tends to be stable, the gas emission rate, the proportion of gas emission, and the amount of gas emission remain of adjacent coal seams remain in a small fluctuation state.
9
Álvarez López, Laura. "The dialect of São João da Chapada: Possible remains of a mining language in Minas Gerais, Brazil". International Journal of the Sociology of Language 2019, n. 258 (27 agosto 2019): 143–70. http://dx.doi.org/10.1515/ijsl-2019-2032.
Abstract (sommario):
Abstract This article focuses on the analysis of a specific vocabulary, possibly the remains of a mining language spoken by descendants of Africans. It analyzes 149 lexical items that were registered in the 1920s in a rural region of Minas Gerais, near the city of Diamantina. Based on earlier historical and linguistic studies, as well as on dictionaries of relevant African languages, the lexical study aims to analyze 149 words and expressions in order to verify the etymologies, and determine whether they fit the demographic data available on the origins of the slave population in this area. The second aim is to analyze the distribution of the lexical items in different semantic domains and word classes and compare the observed tendencies, as well as other linguistic characteristics and social functions, with other mining languages and/or similar Afro-Brazilian and Afro-European varieties. The results indicate that Umbundu maintained a high status in the area, and that this variety was not limited to mining activities, but was probably used in everyday life as a secret code that was part of the strategies of resistance among slaves.
10
Kawiecka, R., A. Krawczyk, P. Lewińska, K. Pargieła, Stanisław Szombara, A. Tama, K. Adamek e M. Lupa. "Mining Activity and its Remains - The Possibilities of Obtaining, Analysing and Disseminating of Various Data on the Example of Miedzianka, Lower Silesia, Poland". Journal of Applied Engineering Sciences 8, n. 2 (1 dicembre 2018): 65–72. http://dx.doi.org/10.2478/jaes-2018-0020.
Abstract (sommario):
Abstract The article presents comprehensive documentation of the situation of post-mining Miedzianka village (former town), which is located in Lower Silesia, in south-western Poland. Due to the long-term expansive mining exploitation since the 14th century, over time Miedzianka was completely destroyed and depopulated, thus nowadays, only a few inhabitants live there. The basis for the conducted research area were changes in land and urban structure that have been occurring for centuries in connection with mining operation of copper and uranium. The authors focused on presenting the changes using archival cartographic documentation, land surveying measurements and 3D modelling. That data allowed to determine on the ground specific sites related to mining operations, discover old urban buildings, performing their 3D models and finding places potentially threatened by continuous and discontinuous deformations. The combination of all the data allowed to present the full situation that occurred in Miedzianka.
11
Anis, Mohamad, Arifudin Idrus, Hendra Amijaya e Subagyo Subagyo. "Utilizing coal remaining resources and post-mining land use planning based on GIS-based optimization method : study case at PT Adaro coal mine in South Kalimantan". Journal of Geoscience, Engineering, Environment, and Technology 2, n. 2 (1 giugno 2017): 141. http://dx.doi.org/10.24273/jgeet.2017.2.2.307.
Abstract (sommario):
Coal mining activities may cause a series of environmental and socio-economic issues in communities around the mining area. Mining can become an obstacle to environmental sustainability and a major hidden danger to the security of the local ecology. Therefore, the coal mining industry should follow some specific principles and factors in achieving sustainable development. These factors include geological conditions, land use, mining technology, environmental sustainability policies and government regulations, socio-economic factors, as well as sustainability optimization for post-mining land use. Resources of the remains of the coal which is defined as the last remaining condition of the resources and reserves of coal when the coal companies have already completed the life of the mine or the expiration of the licensing contract (in accordance with government permission). This research uses approch of knowledge-driven GIS based methods mainly Analytical Hierarchy Process (AHP) and Fuzzy logic for utilizing coal remaining resources and post-mining land use planning. The mining area selected for this study belongs to a PKP2B (Work Agreement for Coal Mining) company named Adaro Indonesia (PT Adaro). The result shows that geologically the existing formation is dominated by Coal Bearing Formation (Warukin Formation) which allows the presence of remains coal resource potential after the lifetime of mine, and the suitability of rubber plantation for the optimization of land use in all mining sites and also in some disposal places in conservation areas and protected forests.
12
Purniemaa, P., e R. Jagadeesh Kannan. "Cascaded Neural Network Based Data Mining Strategy for Cloud Intrusion Detection". Indonesian Journal of Electrical Engineering and Computer Science 11, n. 3 (1 settembre 2018): 1094. http://dx.doi.org/10.11591/ijeecs.v11.i3.pp1094-1101.
Abstract (sommario):
In recent years data mining has acquired huge popularity in the field of knowledge discovery. Thus, this approach has inspired several researches for anomaly detection, fraud detection and intrusion detection with higher accuracy, all round generalization of the problem and its sub cases; all giving higher performance in conditions subjected to continuous alteration. Though there remain quite a few challenging problems in design and implementation of a data mining based cloud intrusion detection system, as deception tactics and modeling of behavior remains a daunting problem to compute for anomaly owing to massive size of data to process in reasonable time. In this study we present a cascaded neural network based data mining strategy for cloud intrusion detection systems (IDSs) and presents the comparison and performance results tested on DARPA Intrusion Detection (ID) Data Sets, Knowledge Discovery and Data Mining Cup, NSL-KDD dataset. The study exhibits numerous advantages offered by the presented method and give reliable results of anomaly detection in real time scenario.
13
Junakova, Natalia, Eva Šelingova e Lenka Demkova. "Dredged Material Quality in Anthropogenically Exploited Catchment Area". Key Engineering Materials 838 (aprile 2020): 118–24. http://dx.doi.org/10.4028/www.scientific.net/kem.838.118.
Abstract (sommario):
The paper is focused on the research of pollutants in dredged material and water in the watershed of the Sigord reservoir (Eastern Slovakia), which is influenced by anthropogenic activity. The monitored area extends to the cadastral area of Zlatá Baňa, which has been used for a long time and intensively for mining of gold, antimony and mercury. After the end of mining activities (at the beginning of the 20th century) the territory remained devastated by numerous remains of mining activities and no attention has been paid to this area in terms of scientific research. Therefore, the monitoring of dredged sediment and water quality has been carried out. The results show that the limit values of selected heavy metals (such as Sb, As, Hg, Pb, Cu, Zn, Ni, Fe and Al) are exceeded in both sediments and water in the reservoir watershed, as a result of the former mining activities around Sigord.
14
Makhalova, Tatiana, Sergei O. Kuznetsov e Amedeo Napoli. "Mint: MDL-based approach for Mining INTeresting Numerical Pattern Sets". Data Mining and Knowledge Discovery 36, n. 1 (4 ottobre 2021): 108–45. http://dx.doi.org/10.1007/s10618-021-00799-9.
Abstract (sommario):
AbstractPattern mining is well established in data mining research, especially for mining binary datasets. Surprisingly, there is much less work about numerical pattern mining and this research area remains under-explored. In this paper we propose Mint, an efficient MDL-based algorithm for mining numerical datasets. The MDL principle is a robust and reliable framework widely used in pattern mining, and as well in subgroup discovery. In Mint we reuse MDL for discovering useful patterns and returning a set of non-redundant overlapping patterns with well-defined boundaries and covering meaningful groups of objects. Mint is not alone in the category of numerical pattern miners based on MDL. In the experiments presented in the paper we show that Mint outperforms competitors among which IPD, RealKrimp, and Slim.
15
Makhalova, Tatiana, Sergei O. Kuznetsov e Amedeo Napoli. "Mint: MDL-based approach for Mining INTeresting Numerical Pattern Sets". Data Mining and Knowledge Discovery 36, n. 1 (4 ottobre 2021): 108–45. http://dx.doi.org/10.1007/s10618-021-00799-9.
Abstract (sommario):
AbstractPattern mining is well established in data mining research, especially for mining binary datasets. Surprisingly, there is much less work about numerical pattern mining and this research area remains under-explored. In this paper we propose Mint, an efficient MDL-based algorithm for mining numerical datasets. The MDL principle is a robust and reliable framework widely used in pattern mining, and as well in subgroup discovery. In Mint we reuse MDL for discovering useful patterns and returning a set of non-redundant overlapping patterns with well-defined boundaries and covering meaningful groups of objects. Mint is not alone in the category of numerical pattern miners based on MDL. In the experiments presented in the paper we show that Mint outperforms competitors among which IPD, RealKrimp, and Slim.
16
Agussalim, Muhammad Sibgatullah, Ariana Ariana e Ramlah Saleh. "Kerusakan Lingkungan Akibat Pertambangan Nikel di Kabupaten Kolaka Melalui Pendekatan Politik Lingkungan". Palita: Journal of Social Religion Research 8, n. 1 (11 aprile 2023): 37–48. http://dx.doi.org/10.24256/pal.v8i1.3610.
Abstract (sommario):
AbstractThe impact of environmental damage caused by mining activities, especially nickel mining, is still a common problem. There is no shared awareness to protect the environment so that it remains balanced from various parties, namely companies that carry out mining production, the government as a regulatory policy, and the community as the party that operates environmental damage due to mining production activities. This study uses an environmental and political approach to describe the problems of environmental damage. The method used in this research is qualitative research. Data and information sources were obtained from observations, discussions, and references to literature documents from books, journals, and electronic information media. The results of this study found environmental damage due to nickel mining due to several things, namely mining production activities in forest areas, problem permissions of mining and the dynamics between profit interests and environmental damage resulting from mining activities. Keywords: Environmental Damage, Environmental Politics, Government, Nickel mining.
17
Fedoruk, A. A., O. G. Drugova e S. V. Martin. "Assessment of working conditions of workers in underground mining with varying degrees of mechanization of the process". Russian Journal of Occupational Health and Industrial Ecology, n. 9 (19 marzo 2020): 789. http://dx.doi.org/10.31089/1026-9428-2019-59-9-789-790.
Abstract (sommario):
The estimation of the levels of production factors with varying degrees of mechanization of underground mining processes. The introduction of self-propelled mining equipment leads to a decrease in the influence of some factors, but other factors appear, or the influence of existing ones is aggravated. In General, occupational risk remains high.
18
Coates, David. "Mining proteases in the genome databases". Essays in Biochemistry 38 (1 ottobre 2002): 185–96. http://dx.doi.org/10.1042/bse0380185.
Abstract (sommario):
Protease data mining can take advantage both of the many specialist, Web-available databases that cover the genetic, protein and nucleic acid sequence information that is specific to a variety of organisms, and of a flexible, but defined, classification system. However, precomputed data, such as gene predictions, should be used with care. Unless there is definitive supporting information, ideally sequencing of a cDNA to show that the predictions are accurate, followed by expression and biochemical characterization of the predicted protein, the predicted gene and its product remains a possibility, rather than a certainty.
19
Yovanda, Ridho, Restu Juniah, Anna Yulianita, Yoszi Anaperta e Hisni Rahmi. "Analisis nilai keekonomian peruntukan lahan bekas tambang batubara sebagai asimilator karbon". Jurnal Teknologi Mineral dan Batubara 19, n. 1 (2023): 47–55. http://dx.doi.org/10.30556/jtmb.vol19.no1.2023.1311.
Abstract (sommario):
The environmental issues that usually arise from mining activities are ex-coal mining lands in the form of mine pits (void) and land (non void) which are not managed properly. The company has an obligation to manage ex-coal mining land so that the environment remains sustainable and benefits the community by carrying out reclamation activities. Reclamation of ex-coal mining land by planting oil palm provides benefits in the form of incomes and as a carbon assimilator. This study aims to analyze the economics value of the ex-coal mining land use as a carbon assimilator by using the extended NPV analysis method. The result of analysis revealed a positive extended NPV value of IDR. 1,961,057,020,-, which means that ex-coal mining land can provide positive benefits as a carbon assimilator.
20
Shaw, Ian. "Pharaonic quarrying and mining: settlement and procurement in Egypt's marginal regions". Antiquity 68, n. 258 (marzo 1994): 108–19. http://dx.doi.org/10.1017/s0003598x0004624x.
Abstract (sommario):
Across the rocky landscapes of Egypt lies evidence for pharaonic quarrying and mining; fresh fieldwork at neglected sites, such as the Hatnub travertine quarries and the Wadi el-Hudi amethyst mines, now tells us more. The surviving remains of quarrying and mining settlements suggest subtle adaptations in versatile response to changing economic and geographical parameters.
21
Sun, Shi Guo, Hong Yang, Chun Sheng Li, Bao Lin Zhang, Ai Wei Miao e Ming Zhu Wang. "The Study on Key Issues of Slope Instability during Turning Open-Pit into Underground Mining". Advanced Materials Research 594-597 (novembre 2012): 70–75. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.70.
Abstract (sommario):
During turning open-pit into underground mining, the state of slope stability is related to the relative space positional relationship between open-pit mining and underground mining. The toe area of slope is the most unfavorable area to slope stability and the outer region of slope is the most favorable area, while the central area of the slope has the most complicated effect on slope stability so that the mechanism of its influence can be understood only by the means of calculation. The slope stability coefficient decreases with the augment of underground mining geometric dimension. But it remains constant when the underground mining area is fully extracted. With the increase of mining depth, its range of influence on slope stability increases, which results in the decrease of slope stability coefficient. However, the slope stability coefficient tends to unchanged when the mining depth increases to some certain value.
22
Rizkirobbi, Diaz Rahadiyan, Nurul Listiyani e Iwan Riswandie. "Kewajiban Perusahaan Pertambangan Dalam Reklamasi Lahan Tambang Menurut Undang-Undang Nomor 3 Tahun 2020 Tentang Pertambangan Mineral Dan Batubara". Jurnal Penegakan Hukum Indonesia 3, n. 3 (5 maggio 2023): 386–400. http://dx.doi.org/10.51749/jphi.v3i3.92.
Abstract (sommario):
Aside from the rise of environmental issues regarding mining activities, especially in the context of reclamation and post-mining activities, there have been changes in the regulations governing them. The reclamation program for ex-mining land is a mandatory program that must be carried out by every company, both private and non-private. Reclamation is an activity carried out throughout the mining business stages to organize, restore, and improve the quality of the environment and the ecosystem so that they function again according to their designation. The placement of post-mining guarantees by companies should not eliminate the company's obligation to carry out post-mining activities. If the company has a shortage of reclamation planning costs, placement of reclamation guarantees, implementation of reclamation, or release or disbursement of reclamation guarantees to complete post-mining activities under the stipulated guarantee, it remains the company's responsibility.
23
Bołoz, Łukasz. "Conical Picks for Undeground Mining". New Trends in Production Engineering 3, n. 1 (1 agosto 2020): 221–30. http://dx.doi.org/10.2478/ntpe-2020-0018.
Abstract (sommario):
AbstractMechanical cutting in underground mining faces increasingly difficult challenges. Deteriorating working conditions result in the development of automation and robotization, and the insufficient durability of cutting tools remains a serious problem. In addition to drilling, the technology of cutting provides a huge market for tools. Currently, mainly conical picks are used in the process of cutting. The cutterheads of shearers are equipped with at least several dozen conical picks, which, due to their workability and abrasiveness, sometimes work for merely a few hours. Hence the interest of users and manufacturers in the development of tools with increased durability. The article briefly presents the applied solutions of conical picks, their construction, dimensions and materials used. Attention was paid to the issues related to the protection applied and its marking. A review and analysis of commonly known construction solutions for picks and holders have also been carried out, and proprietary patent pending solutions for the pick and holder have been presented.
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Sharma, Dr Nirmla, e Sameera Iqbal Muhmmad Iqbal. "Emerging Trends of web Mining Through Cloud Mining (Bitcoin) in Business Companies". International Journal of Engineering and Advanced Technology 13, n. 2 (30 dicembre 2023): 1–6. http://dx.doi.org/10.35940/ijeat.b4319.1213223.
Abstract (sommario):
In this paper we show research about how to mine valuable knowledge on the web mining through cloud mining in business companies and comparison about web mine. This paper illustrates the recent, previous, and upcoming web mining by cloud mining. Now we initiate real-time data set for recovery facts on the network i.e., web content mining, and the detection of client approach relationships from cloud servers, i.e., web management mining that enhance the web mining problems. Moreover, we similarly illustrated web mining through cloud mining in business companies. Cloud mining is an upcoming Web Mining. That is the main benefit of the company looking after all the usual mining problems. Cloud mining decreases the costs correlated with running a mining rig. Cloud mining is a procedure to mine cryptocurrency like bitcoin, by leased cloud computing operate without connecting or promptly governing the hardware and associated software. The initial processor that has observed a result to the problem catches the succeeding Bitcoin block, and the procedure remains. Bitcoin mining needs advanced hardware to explain difficult calculations and arithmetic challenges. In this paper we have discussed to work and is beneficial for business companies. We have proposed a structure for a cloud mining service. These services are supported by business model and strategy, hardware procurement and setup, user interface and dashboard and customer support and education etc. Cloud mining service deals are often tricks, or rip-offs. Cloud mining suppliers and companies benefit by leasing away their hardware in replace for funds. Trading mining hardware seems like a prospect’s agreement for saving ruses.
25
Botha, Doret, e Freek Cronjé. "Women in mining: A conceptual framework for gender issues in the South African mining sector". African Journal of Employee Relations (Formerly South African Journal of Labour Relations) 39, n. 1 (19 febbraio 2019): 10–37. http://dx.doi.org/10.25159/2520-3223/5880.
Abstract (sommario):
New mining legislation aims to rectify previous inequalities and disadvantages in the mining sector and specifically provides for the inclusion of women in core mining activities. Although there is no lack of good will, the achievement of gender equality in the male-dominated mining sector remains one of the biggest equity challenges in the country and numerous problems accompany the deployment of women in core mining activities. The main objective of the study was to critically analyse gender issues in the mining sector and then to develop a conceptual framework that will enable the mining sector to contribute to and ensure the sustainable employment of women in this sector. A literature review was carried out to gain an in-depth understanding of the variables that have an impact on women in the mining sector specifically. An empirical study was conducted to identify and investigate relevant gender-related issues in the mining sector. Quantitative and qualitative research paradigms were used. The research revealed that various factors need to be considered for the successful and sustainable deployment of women in the mining sector. The study concludes by making recommendations and offering a conceptual framework that could be implemented and used by various stakeholders in the mining sector
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Botha, Doret, e Freek Cronjé. "Women in mining: A conceptual framework for gender issues in the South African mining sector". African Journal of Employee Relations 39, n. 1 (19 febbraio 2019): 10–37. http://dx.doi.org/10.25159/2664-3731/5880.
Abstract (sommario):
New mining legislation aims to rectify previous inequalities and disadvantages in the mining sector and specifically provides for the inclusion of women in core mining activities. Although there is no lack of good will, the achievement of gender equality in the male-dominated mining sector remains one of the biggest equity challenges in the country and numerous problems accompany the deployment of women in core mining activities. The main objective of the study was to critically analyse gender issues in the mining sector and then to develop a conceptual framework that will enable the mining sector to contribute to and ensure the sustainable employment of women in this sector. A literature review was carried out to gain an in-depth understanding of the variables that have an impact on women in the mining sector specifically. An empirical study was conducted to identify and investigate relevant gender-related issues in the mining sector. Quantitative and qualitative research paradigms were used. The research revealed that various factors need to be considered for the successful and sustainable deployment of women in the mining sector. The study concludes by making recommendations and offering a conceptual framework that could be implemented and used by various stakeholders in the mining sector
27
Holland, Peter. "Drug Testing in the Australian Mining Industry". Surveillance & Society 1, n. 2 (1 settembre 2002): 204–9. http://dx.doi.org/10.24908/ss.v1i2.3353.
Abstract (sommario):
Alcohol and illicit substance abuse in the workplace is increasingly becoming a major human resource and employee relations issue. Whilst more sophisticated measures have been developed to test and monitor drug use in the workplace, and despite tacit union support on the grounds of occupational health and safety, the implementation of drug testing procedures remains a contentious issue. This paper examines the issue through a case study in the Australian mining industry where the introduction of the drug-testing resulted in a major industrial disputation.
28
Song, Guangyuan, Kai Du, Yidong Zhang, Zexin Li e Lei Hu. "Study of the Overlying Strata Movement Law for Paste-Filling Longwall Fully Mechanized in Gaohe Coal Mine". Applied Sciences 13, n. 14 (9 luglio 2023): 8017. http://dx.doi.org/10.3390/app13148017.
Abstract (sommario):
Green mining plays a vital role in achieving environmentally friendly and ecologically sound mining practices. In domestic mining areas, the coal mining method is gradually transitioning from collapse mining to filling mining. Paste filling has been proven effective in controlling surface deformation, although the understanding of its underlying control mechanisms remains incomplete. This study focuses on the E1302 paste-filling working face at Shanxi Gaohe Energy Co., Ltd. and conducts a comprehensive investigation into the movement patterns of overlying strata in longwall fully mechanized mining with paste filling. Through mathematical analysis, a mechanical model for overburden movement in paste-filling faces is established, and the movement behavior of overburden is studied through numerical simulations. Field measurements are conducted to analyze the primary influencing factors of overburden movement, while surface subsidence monitoring is employed to analyze the subsidence characteristics of paste-filling faces. The research reveals that the deflection formula for the roof behind the paste-filling face follows a unitary quartic equation. The key factors influencing significant roof subsidence in filling faces include the filling step distance, filling body strength, and filling rate. Compared to traditional caving mining, filling mining exhibits reduced stress concentration, a smaller range of stress influence, and less deformation in the surrounding rock. The coefficient of gentle subsidence for the overlying rock in filling mining is approximately one-tenth of that in caving mining. The development of cracks in filling mining can be divided into three stages: initial crack propagation, crack recompaction, and stable maintenance of cracks. Notably, the progression of advanced cracks assumes a “sail-shaped” pattern, and the area of crack recompaction is located above the rear side of the excavation. Cracks behind the working face only appear in the basal roof rock layer. When the filling rate in longwall fully mechanized mining with paste filling exceeds 94%, the top plate of the filling working face remains intact but exhibits bending and sinking. The sinking of the top plate increases exponentially with the filling step distance, and approximately 80% of the filling body’s deformation occurs within 20 m after filling. Following backfilling mining, the stability period of the overlying rock is significantly shortened compared to caving mining, resulting in a relatively gentle movement without an active surface movement phase. After six months of backfilling, the overlying rock settles steadily and consistently. The subsidence coefficient for backfilling mining is 0.065, with a maximum surface subsidence of 215 mm. These findings highlight the successful control of surface subsidence. The research outcomes provide an effective theoretical foundation and research direction for predicting overburden movement and surface subsidence in paste-filling faces.
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Ankusheva, Polina, Daria Kiseleva, Olga Bachura, Irina Alaeva, Maksim Ankushev e Tatiana Okuneva. "Labor and Food of Bronze Age Miners in the Southern Trans-Urals (based on the strontium isotopic composition in the Novotemirsky mine osteological remains)". Stratum plus. Archaeology and Cultural Anthropology, n. 2 (30 aprile 2021): 69–84. http://dx.doi.org/10.55086/sp2126984.
Abstract (sommario):
The article addresses organization of Late Bronze Age mining in the Southern Trans-Urals, in particular the degrees of its specialization and the scale of exchange operations. The main object is bone remains from the cultural layer of the II millennium BC of the Novotemirsky mine. The species and age composition of domestic animals are similar to the settlement materials of the Sintashta, Srubnaya-Alakul, and Sargary-Alekseevo settlements of the region. Comparison of 87 Sr/86 Sr variations in local bioavailable strontium baseline proxies and archaeological samples has indicated that the range of cattle grazing was located mainly within the immediate vicinity of the Novotemirsky mine. The results suggest that the mining organization model implemented at the Novotemirsky mine was similar to the Alakul culture of the Ural-Mugodzhary mining and metallurgical center and was characterized by the absence of specialized miner settlements, and the participation of the population of nearby villages in labor and meals organization at the mines, as well as by the poor development of trade and exchange operations.
30
Huang, Zenghua, Shirong Ge, Yonghua He, Dandan Wang e Shouxiang Zhang. "Research on the Intelligent System Architecture and Control Strategy of Mining Robot Crowds". Energies 17, n. 8 (11 aprile 2024): 1834. http://dx.doi.org/10.3390/en17081834.
Abstract (sommario):
Despite the pressure of carbon emissions and clean energy, coal remains the economic backbone of many developing countries due to its abundant resources and widespread distribution. The stable supply of coal is also vital for the global economy and remains irreplaceable in the future global energy structure. China has been a major contributor to annual coal output, accounting for nearly 50% worldwide since 2014. However, despite implementing intelligent coal mining technology, China’s coal mining industry still employs over 1.5 million underground miners, posing significant safety risks associated with underground mining operations. Therefore, the introduction of coal mining robots in underground mines is an urgently needed scientific and technological solution for upgrading China’s and even the world’s coal energy industry. The working face needs a shearer, hydraulic support, a scraper conveyor, and other equipment for coordination. The deep integration of intelligent technology with factors such as “humans, machines, the environment, and management” in the workplace is the core content of intelligent coal mines. This paper puts forward an advanced framework for robot technology systems in coal mining, including single robots, robotized equipment, robot crowds, and unmanned systems. The framework clarifies the common key technologies of coal mining robot research and development and the cross-integration with new technologies such as 5G, the industrial internet, big data, artificial intelligence, and digital twins to improve the autonomous and intelligent application of coal mining robots. By establishing a scientific and complete standard system for coal mining robots, we aim to achieve the customized research and development and standardized production of various types of robot. A specific analysis is conducted on the research progress of common key technologies such as the explosion-proof design, mechanical system innovation, power drive, intelligent sensing, positioning and navigation, and underground communication of coal mining robots. The current research and application status of various types of coal mining robots in China are summarized. A new direction for future coal mining robot research and development is proposed. Robotic mining systems should be promoted to enhance the overall intelligence level and efficiency of mining equipment. To develop human–machine environment-integrated robots to improve the autonomy and collaboration level of coal mining robots, the digital twinning of the entire mine robot system should be accelerated; the normalized operation level of coal mine robots should be improved; research on coal mining robots, shield support robots, and transportation robots should be performed; intelligence should be achieved in fully mechanized mining faces; and equipment shield support for fully mechanized mining faces should be provided. The practical process of implementing coal mining robotization is summarized in this paper, and the technical and engineering feasibility of the coal mining machine population is verified.
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Gassiy, Violetta. "Protecting Indigenous Rights from Mining Companies". Sibirica 18, n. 3 (1 dicembre 2019): 92–108. http://dx.doi.org/10.3167/sib.2019.180305.
Abstract (sommario):
The Arctic is one of Russia’s treasures. However, Arctic economic development means that business is invading lands that are sacred to indigenous peoples. As a rule, regional authorities are interested in tax revenues from subsoil users, prompting them to decide the culture-or-mining dilemma in favor of the latter. But this does not mean that the price of this encroachment on indigenous lands remains uncalculated. Since its establishment in 2010, Yakutia’s Ethnological Expertise Committee has developed a tool for assessing the damage caused to indigenous communities by subsoil users. The problem of getting businesses to compensate indigenous communities has yet to be solved. This article seeks answers to the problem of fair compensation methods and explores modes of partnership and cooperation on traditional lands.
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Shao, Xiao Ping, Ping Wu Shi e Yu Cheng Xia. "Analysis of Key Safety Factors Mining Large Section Working Face to Steep Seams". Advanced Materials Research 361-363 (ottobre 2011): 246–49. http://dx.doi.org/10.4028/www.scientific.net/amr.361-363.246.
Abstract (sommario):
As a scientific method, the mining method of horizontal section top coal caving [1-3] has been widely used at Urumqi coal mine in Xinjiang autonomous region. At present, the section height remains at 18～22m in Urumqi mining area, belonging to the large section mining [4], and has the possibility to further improve section height. In this paper, the main factors affecting safety were analyzed to the large section working face, pointing out that safety mining of the large section working face must finish a good job selecting a reasonable section height to maximize the recovery ratio of top coal, filling surface to block air leakage channel supplying oxygen after mining working face, blocking and extracting gas to reduce the gas content at working face, and equipping with modern safety testing facilities to enhance safety of the detection sensitivity at working face in four key measures, which would ensure safety mining for large section faces at steep seams.
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Chen, Jin Hua. "Analysis on the Key Technologies of CBM Surface Well Development in Mining Active Areas of China". Advanced Materials Research 201-203 (febbraio 2011): 372–77. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.372.
Abstract (sommario):
In the past 20 years, coal bed methane (CBM) surface well technology has made some progress in mining active areas in China, but it still remains at its experimental and study stage, and industrialized and large-scale development has not been achieved. The research of the key technologies, such as the distribution of surface wells, the identification and protection of the high-risk locations of casing damage, the optimization of well structure, and the security monitoring of surface drainage in mining active areas, is the key for CBM surface well development in mining active areas of China.
34
Muradyan, Svetlana, Natalia Mikhaylenko, Anna Skachko, Yulia Ivanova, Elisei Rogachev e Elmir Alimamedov. "Mining of Cryptocurrencies: Analysis of Law Enforcement Practice and Problem Solving in Legal Regulation". Jurnal Cita Hukum 11, n. 1 (30 aprile 2023): 21–32. http://dx.doi.org/10.15408/jch.v11i1.31161.
Abstract (sommario):
Despite the enormous popularity of mining worldwide, which entirely objective reasons have caused, there remains a dissonance in States' approaches to its legal regulation. One of the reasons is that the legal regulation of blockchain technologies in different countries goes completely different ways. In fact, mining is a process of generating cryptocurrencies, as a result of which a new suitable block of transactions is added to the blockchain, and coins are issued. Therefore, to regulate such a process as mining, the legislator needs to create a holistic legal framework regulating the turnover of digital assets in the state.
35
Fonte, João, Emmanuelle Meunier, José Alberto Gonçalves, Filipa Dias, Alexandre Lima, Luís Gonçalves-Seco e Elin Figueiredo. "An Integrated Remote-Sensing and GIS Approach for Mapping Past Tin Mining Landscapes in Northwest Iberia". Remote Sensing 13, n. 17 (29 agosto 2021): 3434. http://dx.doi.org/10.3390/rs13173434.
Abstract (sommario):
Northwest Iberia can be considered as one of the main areas where tin was exploited in antiquity. However, the location of ancient tin mining and metallurgy, their date and the intensity of tin production are still largely uncertain. The scale of mining activity and its socio-economical context have not been truly assessed, nor its evolution over time. With the present study, we intend to present an integrated, multiscale, multisensor and interdisciplinary methodology to tackle this problem. The integration of airborne LiDAR and historic aerial imagery has enabled us to identify and map ancient tin mining remains on the Tinto valley (Viana do Castelo, northern Portugal). The combination with historic mining documentation and literature review allowed us to confirm the impact of modern mining and define the best-preserved ancient mining areas for further archaeological research. After data processing and mapping, subsequent ground-truthing involved field survey and geological sampling that confirmed cassiterite exploitation as the key feature of the mining works. This non-invasive approach is of importance for informing future research and management of these landscapes.
36
Suandika, I. Nyoman. "Pelaksanaan Kewenangan Pemerintah Daerah Dalam Penertiban Penambangan Galian C Untuk Melindungi Kawasan Geopark Di Kabupaten Bangli". Jurnal Ilmiah Raad Kertha 1, n. 1 (8 luglio 2020): 108–22. http://dx.doi.org/10.47532/jirk.v1i1.146.
Abstract (sommario):
Before defined as the geopark region mount Batur caldera region is oneof the central mining activity of C in Bangli. Once established as a regionalinternational geopark by UNESCO mining activity of C is a major problem becauseit damages the environment and damaging geology sites that threaten the existenceof the geopark. But the fact that until now mining activity C remains. The issue asfollows: how is law protection for geopark existency in Bangli regency, and how iseffectivity of Bangli government authority implementation in controlling on miningactivity of C entrenchment in geopark area in Bangli regency. The research methodapplied in this thesis is emperical law resesarch because occur gap between dassollen with das sein that is gap between theory and reality. The result shows in order to protect geopark the Bangli government has integrate geopark material intoeducation curricullum in Bangli regency, and set up Batur mount area and aroundas area of geology sanctuary. Controll system on C entrenchment conducted by tostop mining at some mining point, traffic change, and arrested on the businessmanof mining who have not business license of mining.
37
Mentari, Gaya. "Kajian Arkeologis Terhadap Jembatan Peninggalan Masa Kolonial di Desa Lebong Tandai, Kecamatan Napal Putih, Kabupaten Bengkulu Utara". PURBAWIDYA: Jurnal Penelitian dan Pengembangan Arkeologi 11, n. 2 (31 dicembre 2022): 140–52. http://dx.doi.org/10.55981/purbawidya.2022.61.
Abstract (sommario):
The archaeological remains in Lebong Tandai, Napal Putih District, North Bengkulu Regency are records that reflect the existence of human life in the past with distinctive cultural characteristics of its time. In this study, there was a discussion of archaeological remains in the form of an old bridge found in Lebong Tandai Village which was founded in the 19th century. As an effort to re-map the potential of archaeological remains in Lebong Tandai, the documentation of archaeological remains in the form of an old bridge in Lebong Tandai was the main problem studied in this study. The method used was a qualitative method by providing a comprehensive description of the archaeological object of the old bridge as a means of supporting mining activities and building structures that have a vital role in the activities of the local community at that time. The result of this study indicated that the old bridge in Lebong Tandai Village was a colonial bridge style. The bridge was built by the Dutch private mining company named Simau, in 1907.
38
Mulik, Sujata. "Analysis of Crop Yield Prediction of Kharif & Rabi Jowar Crops Using Data Mining Techniques". International Journal of Advanced Research in Computer Science and Software Engineering 7, n. 11 (30 novembre 2017): 79. http://dx.doi.org/10.23956/ijarcsse.v7i11.468.
Abstract (sommario):
Agriculture sector in India is facing rigorous problem to maximize crop productivity. More than 60 percent of the crop still depends on climatic factors like rainfall, temperature, humidity. This paper discusses the use of various Data Mining applications in agriculture sector. Data Mining is used to solve various problems in agriculture sector. It can be used it to solve yield prediction. The problem of yield prediction is a major problem that remains to be solved based on available data. Data mining techniques are the better choices for this purpose. Different Data Mining techniques are used and evaluated in agriculture for estimating the future year's crop production. In this paper we have focused on predicting crop yield productivity of kharif & Rabi Crops.
39
Bilal Zorić, Alisa. "Benefits of Educational Data Mining". Journal of International Business Research and Marketing 6, n. 1 (2020): 12–16. http://dx.doi.org/10.18775/jibrm.1849-8558.2015.61.3002.
Abstract (sommario):
We live in a world where we collect huge amounts of data, but if this data is not further analyzed, it remains only huge amounts of data. With new methods and techniques, we can use this data, analyze it and get a great advantage. The perfect method for this is data mining. Data mining is the process of extracting hidden and useful information and patterns from large data sets. Its application in various areas such as finance, telecommunications, healthcare, sales marketing, banking, etc. is already well known. In this paper, we want to introduce special use of data mining in education, called educational data mining. Educational Data Mining (EDM) is an interdisciplinary research area created as the application of data mining in the educational field. It uses different methods and techniques from machine learning, statistics, data mining and data analysis, to analyze data collected during teaching and learning. Educational Data Mining is the process of raw data transformation from large educational databases to useful and meaningful information which can be used for a better understanding of students and their learning conditions, improving teaching support as well as for decision making in educational systems.The goal of this paper is to introduce educational data mining and to present its application and benefits.
40
Kanwal, Bushra, Muhammad Rizwan Rashid Rana, Asif Nawaz e Anum Nawaz Kiani. "Benchmarking Travelling Reviews using Opinion Mining". Foundation University Journal of Engineering and Applied Sciences <br><i style="color:black;">(HEC Recognized Y Category , ISSN 2706-7351)</i> 4, n. 1 (16 maggio 2024): 1–12. http://dx.doi.org/10.33897/fujeas.v4i1.785.
Abstract (sommario):
Online travel reviews offer valuable data, yet it remains uncertain if those most influenced by these reviews actually read them. This research aims to uncover consistent patterns and explain variations in online travel ratings, comments, and reviews. To accomplish this, millions of reviews were collected from Pakistan's top online travel companies, Uber and Careem. Utilizing semantic affiliation analysis, subject terms were extracted, forming a semantic affiliation structure. The findings highlight significant differences among channels concerning topical vocabulary, subject distribution, structural traits, and community links. The network visualization results are particularly noteworthy, as they illustrate connections between key concepts and words within each topic, making them easily understandable. With the proposed logical method, we can better understand the strategic snafus in the travel sector and gain fresh insights into how to dig up popular assessments to better serve tourists, lodging establishments, and trade groups.
41
Richard, Kouame Aimé, Tarrouth Honnéo Gabin, Toukpo Guy Oscar Sical e Aboli Amani Noel. "The Persistence of 'Clandestine' Mining Crafts in Côte d'Ivoire : An Ethnography of the Conditions of Emergence and the Process of Institutionalisation as Explanatory Factors". East African Scholars Journal of Agriculture and Life Sciences 5, n. 9 (29 ottobre 2022): 173–79. http://dx.doi.org/10.36349/easjals.2022.v05i09.003.
Abstract (sommario):
The issue of "illegal" artisanal gold mining is a concern for the state of Côte d'Ivoire. To resolve this phenomenon, measures ranging from awareness-raising to the creation of repression brigades have been taken. Despite these actions, the practice remains. This paper aims to analyse the factors that explain the persistence of 'illegal' artisanal mining in rural Côte d'Ivoire, based on a case study of the sub-prefecture of Hiré, an area where the practice of 'illegal' artisanal mining is developing asymmetrically to that of legal exploitation. The study is essentially qualitative. For data collection, interviews were conducted with different groups of actors who participate in the production system in artisanal mining. The results of the study show that the persistence of artisanal mining is the result of a social innovation that has emerged territorially by establishing itself while leading to a social transformation.
42
Singh, Pradeep, e Aline Jaeckel. "Undermining by Mining? Deep Seabed Mining in Light of International Marine Environmental Law". AJIL Unbound 118 (2024): 72–77. http://dx.doi.org/10.1017/aju.2024.8.
Abstract (sommario):
Some forty years ago, the UN Convention on the Law of the Sea 1982 (UNCLOS) created an unusual regime for states to collectively manage common natural resources on the international seabed beyond national jurisdiction (known as “the Area”) through the International Seabed Authority (ISA). In the intervening years, scientists have increasingly been warning about the serious environmental risks of mining seabed minerals. At this pivotal point in time, when states are negotiating whether or not to allow seabed mining, this essay explores the risk of undermining by mining, that is, contravening international marine environmental law and the obligations and responsibilities of states thereunder by allowing commercial mining activities to commence. We argue that allowing seabed mining in the Area at this juncture, when so much about the deep ocean remains unknown, would risk frustrating a host of measures, achievements, and progress to enhance marine environmental protection, particularly in areas beyond national jurisdiction. We begin with an overview of the ISA and its work to date, before discussing potential interactions between seabed mining and marine environmental law and policies, with a particular focus on the new ocean biodiversity agreement. We conclude by urging states to take cognizance of their overarching duty to protect and preserve the marine environment and ensure that all decisions taken with respect to seabed mining are consistent with their obligations and responsibilities under international law.
43
Cabanes, Guénaël, e Younès Bennani. "Unsupervised Topographic Learning for Spatiotemporal Data Mining". Advances in Artificial Intelligence 2010 (28 novembre 2010): 1–12. http://dx.doi.org/10.1155/2010/832542.
Abstract (sommario):
In recent years, the size and complexity of datasets have shown an exponential growth. In many application areas, huge amounts of data are generated, explicitly or implicitly containing spatial or spatiotemporal information. However, the ability to analyze these data remains inadequate, and the need for adapted data mining tools becomes a major challenge. In this paper, we propose a new unsupervised algorithm, suitable for the analysis of noisy spatiotemporal Radio Frequency IDentification (RFID) data. Two real applications show that this algorithm is an efficient data-mining tool for behavioral studies based on RFID technology. It allows discovering and comparing stable patterns in an RFID signal and is suitable for continuous learning.
44
Deng, Bao Ping, Shuai Liu, Chen Wang, Yao Dong Jiang e Hong Wei Wang. "Numerical Investigation on Passing through Goaf in Coal Mine Failurezone". Applied Mechanics and Materials 275-277 (gennaio 2013): 1518–24. http://dx.doi.org/10.4028/www.scientific.net/amm.275-277.1518.
Abstract (sommario):
Random mining by small coal mines left many destruction districts with a large range in Fenxi mining district. According to incomplete statistics, the destroyed areas by small coal mines amount to nearly one hundred square kilometers and have over three hundred million tons of resource reserves in Xinliu, Xinyu and Xinyang these three fields. Small coal mines tend to use outdated techniques such as replacing mining with advancement, small excavation with large stoping and room pillar mining technique, which have a stoping rate of only 10% to 25%. Some of the wellheads were not closed seamlessly, which resulted in self-combustion; some were damaged due to the mining of the lower coal seam. A serious security risk existed during the mining of the lower coal seam due to the uncertainty of gas, water and roof pressure. In addition, the destructed area by small coal mines is badly large in Shanxi Province and even the whole country which remains a huge amount of resources. The implementation of this subject is significant.
45
Elango, P., K. Kuppusamy e N. Prabhu. "Data Replication Using Data Mining Techniques". Asian Journal of Computer Science and Technology 8, S1 (22 aprile 2021): 107–9. http://dx.doi.org/10.51983/ajcst-2019.8.s1.1939.
Abstract (sommario):
Database Replication is the successive electronic duplicating of information from a database in one PC or server to a database in another with the goal that all clients share a similar dimension of data. The outcome is a conveyed database in which clients can get to information significant to their assignments without meddling with crafted by others. Anyway information replication is an entrancing theme for both hypothesis and practice. On the hypothetical side, numerous solid outcomes requirement what should be possible as far as consistency: e.g., the difficulty of achieving agreement in offbeat frameworks the blocking idea of CAP hypothesis, and the requirement for picking an appropriate rightness foundation among the numerous conceivable. On the pragmatic side, information replication assumes a key job in a wide scope of settings like storing, back-up, high accessibility, wide territory content dissemination, expanding versatility, parallel preparing, and so forth. Finding a replication arrangement that is reasonable in whatever number such settings as could reasonably be expected remains an open test.
46
Zhuang, Jiaxin, Zonglong Mu, Xiufeng Zhang, Wu Cai, Anye Cao, Chunlong Jiang e Piotr Małkowski. "Seismic Mitigation Effect of Overlying Weakening Strata in Underground Coal Mines". Energies 16, n. 16 (12 agosto 2023): 5958. http://dx.doi.org/10.3390/en16165958.
Abstract (sommario):
Artificial construction of a weakening zone over the roadway is an essential method for preventing coal bursts and rock bursts caused by strong mining tremors. However, concerning the seismic absorption and load reduction capabilities of an artificial structural weakening zone, the degree of rock mass damage to the roadway under weakening zone protection remains unclear. This study employed principles of elasticity and UDEC (Universal Distinct Element Code) to explore the seismic attenuation and load reduction capabilities of the weakening zone. The results indicate that the absorbing ability of the weakening zone increases exponentially with its weakening coefficient. Under the same dynamic load disturbance, when the weakening coefficient rises from 0.00 to 0.99, the sidewall displacement from the elastic wave source side changes from 0.400 m to 0.228 m. The total number of cracks in the roadway-surrounding rock, and the ranges of overstressed zones decreased linearly. The critical threshold of the roadway resisting the mining tremor disturbance increased. In particular, when the mining tremor is located directly above the roadway, the initial deformation of the roof is the largest, and the cumulative deformation of the rib is greater than the roof. By creating a weakening zone with a coefficient exceeding 0.95, the roadway remains unaffected by the 20 MPa dynamic loading. The study provides a theoretical basis for controlling coal burst that is triggered by mining tremors.
47
Ito, Yutaka, Shuto Mikami, Hyongdoo Jang, Abbas Taheri, Kenta Tanaka e Youhei Kawamura. "University Students’ Preferences for Labour Conditions at a Mining Site: Evidence from Two Australian Universities". Resources 9, n. 3 (10 marzo 2020): 29. http://dx.doi.org/10.3390/resources9030029.
Abstract (sommario):
The mining industry makes up a large portion of the gross domestic product (GDP) in Australia, although securing human resources remains a problem in that field. The aim of this paper is to identify Australian university mining students’ preferences, considering it as potential employees’ preferences, for labour conditions at mining sites by means of a discrete choice experiment to promote efficient improvements in labour conditions in the mining industry. The data of 93 respondents analysed in this paper was collected by survey carried out in two universities in Australia. The result of the study showed that students have preferences on several factors such as wage, fatality rate, working position, commuting style, and company. Students having specific sociodemographic characters were found to show specific preferences on labour conditions. The results of this study indicate the potential average of appropriate monetary compensation for each factor.
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Shao, Xiaoping, Xin Li, Long Wang, Zhiyu Fang, Bingchao Zhao, Ershuai Liu, Yeqing Tao e Lang Liu. "Study on the Pressure-Bearing Law of Backfilling Material Based on Three-Stage Strip Backfilling Mining". Energies 13, n. 1 (2 gennaio 2020): 211. http://dx.doi.org/10.3390/en13010211.
Abstract (sommario):
During strip backfilling mining in coal mines, the backfilling material is the main support structure. Therefore, studying the pressure law of the backfilling material is essential for the safe and efficient mining of coal resources. Based on research into strip backfilling mining at working face number 3216 of the Shanghe Coal Mine, and to smooth transition of overlying strata loads to the backfilling material, this study proposes a three-stage strip backfilling mining method. Based on thin-plate theory, an elastic thin-plate model, a reasonable spacing of strip mining is constructed, and the reasonable mining parameters of “mining 7 m to retain 8 m” at working face number 3216 of the Shanghe Coal Mine are determined. The law of backfilling pressure in three-stage strip backfilling mining is studied through numerical simulation and physical simulation experiments. The results show that field measurement results are basically consistent with the experimental results and numerical simulation results. When three-stage strip backfilling mining is adopted, the stage-one backfilling material is the main bearing body to which the overlying rock load transfers smoothly and gradually, and the structure of the “overburden-coal pillar (or backfilling strip)” in the stope remains stable. In three-stage strip backfilling mining, the overlying rock load is ultimately transferred to the stage-one backfilling material, the stage-two backfilling material is the auxiliary bearing body, and the stage-three backfilling material mainly provides long-term stable lateral support for the stage-one backfilling material.
49
Tian, Huiwen, Shu Liu, Wenbo Zhu, Junhua Zhang, Yaping Zheng, Jiaqi Shi e Rutian Bi. "Deciphering the Drivers of Net Primary Productivity of Vegetation in Mining Areas". Remote Sensing 14, n. 17 (25 agosto 2022): 4177. http://dx.doi.org/10.3390/rs14174177.
Abstract (sommario):
Spatial differentiation of the net primary productivity (NPP) of vegetation is an important factor in the ecological protection and restoration of mining areas. However, most studies have focused on climatic productivity constraints and rarely considered the effects of soil properties and mining activities. Thus, the impact of the forces driving NPP in mining areas on spatial location remains unclear. Taking the Changhe Basin mining area as an example, we used the Carnegie–Ames–Stanford approach (CASA) model to estimate NPP and quantified the impact of climate, soil properties, and mining activities based on factorial experiments. Our results indicate that the average NPP in the Changhe Basin mining area was 290.13 gC/(m2·yr), and the NPP in the western Changhe Basin, an intensive coal mining area, was significantly lower than that in the east. The correlations between each driver and NPP varied by location, with mean annual temperature and precipitation, soil organic carbon, total nitrogen, and land degradation showing strong correlations. The relative importance of climate, soil properties, and mining activities on the spatial variability of NPP was 38.97%, 31.50%, and 29.53%, respectively. Furthermore, 70.72% of the NPP variability in mining areas was controlled by the coupled effects of climate and soil properties (CS + SC) or climate and mining activities (CM + MC). Meanwhile, The NPP in the western Changhe Basin mining area was mainly controlled by mining activities (M) or climate and mining activities (CM), while that in the east was mainly controlled by soil properties and climate (CS). Overall, our study extends the knowledge regarding the impacts of driving forces on spatial variation of NPP in mining areas and provides a reference point for forming strategies and practices of ecological restoration and land reclamation in different spatial locations in mining areas.
50
YU, LIGUO, e STEPHEN R. SCHACH. "APPLYING ASSOCIATION MINING TO CHANGE PROPAGATION". International Journal of Software Engineering and Knowledge Engineering 18, n. 08 (dicembre 2008): 1043–61. http://dx.doi.org/10.1142/s0218194008004008.
Abstract (sommario):
A software system evolves as changes are made to accommodate new features and repair defects. Software components are frequently interdependent, so changes made to one component can result in changes having to be made to other components to ensure that the system remains consistent; this is called change propagation. Accurate detection of change propagation is essential for software maintenance, which can be aided by accurate prediction of change propagation. In this paper, we study change propagation in three leading open-source software products: Linux, FreeBSD, and Apache HTTP Server. We use association rules-based data-mining techniques to detect change-propagation rules from the product version history. These rules are evaluated with respect to different training data sets and different test data sets. We discuss the applicability of using association-rule mining for change propagation, and several related issues. We find that a challenging issue in association-rule mining, concept drift, exists in software systems. Concept drift complicates the task of change-propagation prediction and requires special approaches, different from currently-used techniques for predicting change propagation.