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mining method » thinking method (Expander búsqueda), kriging method (Expander búsqueda), cloning method (Expander búsqueda)
mining method » thinking method (Expander búsqueda), kriging method (Expander búsqueda), cloning method (Expander búsqueda)
1
artículo
Publicado 2019
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This article presents a methodology that applies natural language processing and classification algorithms by using data mining techniques, and incorporating procedures for validation and verification of significance. This is conducted according to the analysis and selection of data and results based on quality statistical analysis, which guarantees the effectiveness percentage in knowledge construction. The analysis of computer incidents within an educational institution and a standardized database of historical computer incidents collected by the Service Desk area is used as case study. Such area is linked to all information technology processes and focuses on the support requirements for the performance of employee activities. As long as users’ requirements are not fulfilled in a timely manner, the impact of incidents may give rise to work problems at different levels, making it d...
2
artículo
Publicado 2019
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This article presents a methodology that applies natural language processing and classification algorithms by using data mining techniques, and incorporating procedures for validation and verification of significance. This is conducted according to the analysis and selection of data and results based on quality statistical analysis, which guarantees the effectiveness percentage in knowledge construction. The analysis of computer incidents within an educational institution and a standardized database of historical computer incidents collected by the Service Desk area is used as case study. Such area is linked to all information technology processes and focuses on the support requirements for the performance of employee activities. As long as users’ requirements are not fulfilled in a timely manner, the impact of incidents may give rise to work problems at different levels, making it d...
3
artículo
Publicado 2020
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El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.
4
artículo
Publicado 2023
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Recurrent flooding in the mining works, deficiencies in the operation of pumps, unforeseen stoppages, and lack of water availability in the processes, affect the operations in the subway mine. The traditional solution adopted is to wait for maintenance times for its post evacuation, generating stoppages, consumption of water from the wells and inefficiency in the daily water demand. Therefore, this article presents a new approach that will expand the traditional methods by introducing a prediction model using probabilistic methods. This approach will allow the design of an optimal water distribution system, the efficient control in the maintenance and covering of the recirculated water demand inside the mine. Variables describing problems related to pump flow, pressure zoning and the type of pump distribution, either in series or in parallel in the pumping system, will be determined. Als...
5
artículo
Publicado 2019
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El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.
6
artículo
Publicado 2023
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This research aims to enhance the classification of the rock mass in underground mining, a common problem due to geological alterations that do not fit existing methods. Artificial neural networks are proposed as a solution, which use input/output data to learn and solve problems. The process involves gathering data on rock properties and training the neural networks to identify and classify various types of rock. Once trained, the neural networks can classify the rock mass in real-time during mine design and progression, adapting to different rock types with a low margin of error of 0.279% in determining the RMR index. This research overcomes the limitations of current classification methods, providing a more accurate and reliable solution for the classification of the rock mass in underground mining. In summary, artificial neural networks are utilized to improve the classification of r...
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8
artículo
Publicado 2011
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Student academic performance at universities is crucial for education management systems. Many actions and decisions are made based on it, specifically the enrollment process. During enrollment, students have to decide which courses to sign up for. This research presents the rationale behind the design of a recommender system to support the enrollment process using the students’ academic performance record. To build this system, the CRISP-DM methodology was applied to data from students of the Computer Science Department at University of Lima, Perú. One of the main contributions of this work is the use of two synthetic attributes to improve the relevance of the recommendations made. The first attribute estimates the inherent difficulty of a given course. The second attribute, named potential, is a measure of the competence of a student for a given course based on the grades obtained i...
9
tesis de grado
Publicado 2024
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La presente investigación tiene como objetivo optimizar el proceso de compras CAPEX en una empresa minera polimetálica de gran envergadura, evaluando los problemas y cuellos de botella presentes en dicho proceso. La metodología presentada se centra en la recolección exhaustiva de datos cuantitativos y cualitativos, así como en la implementación de estrategias basadas en metodologías Lean como Just in Time y Muda. Como resultado, se presenta una reducción significativa en los tiempos de entrega de órdenes de compra, así como una mejora en la eficiencia y el rendimiento general del proceso, validados mediante análisis estadístico y simulaciones en el software ARENA. La conclusión es que la implementación de las estrategias Just in Time y Muda ha demostrado ser efectiva para optimizar el proceso de compras CAPEX, con impactos positivos en la eficiencia operativa y la reducció...
10
artículo
Publicado 2019
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El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.
11
artículo
Publicado 2020
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El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.
12
artículo
Publicado 2013
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This research‘s main objective quantification of iron content in sphalerites; differentiation of three types of sphalerites is obtained according to the iron content, which will be useful for the proposed solutions in the metallurgical problems. In this study themineralogical characterization of samples from the Paragsha concentrator, the mining district of Cerro de Pasco and especiallysphalerites using the method of optical microscopy was performed for which it was necessary to use a polarizing microscopereflected light.Studies was performed as accurately as in the case of modal analysis where estimates of the degree of liberation and mineralgicalassociation are made, the samples come from the metallurgical testing laboratory. The specimen was taken from the concentratorplant Paragsha, then sifted for the preparation of polished sections that were used for the characterization of each...
13
artículo
Publicado 2014
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In this article, the author analyzes strengths and weaknesses of the domain systems of minerals, allowing us knowing the system adopted for our Constitution. Then, the author evaluates the characteristics and legal nature of mineral exploration concession and exploitation. After that, he will examine in detail the mining procedure govern by the GeneralMining Law and its Regulations, which allow domestic and foreign investors to obtain themining concession title. Finally, he will offer proposals in each of the methods related to the mining concession and its procedures in the public administration.
14
artículo
Publicado 2020
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El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.
15
artículo
Mining activities are associated with the influence of external and internal factors. Companies have no control over external factors, such as the supply and demand of metals; however, internal factors, such as the optimization and management of their processes, are the responsibility of their managers and supervisors. Costs are the result of continuous improvement, process management, occupational safety management, environmental care, and social relations. In this context, it is necessary to have an adequate cost model. This research aims to show the construction of a new model for cost management in an underground mine that facilitates monitoring, control, and decision making in daily operations, called "MOGECOMS". One of the reports generated from the model is by 'cost center'. It presents the budget for December, the execution for December and the deviation for December, where the d...
16
artículo
Publicado 2019
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El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.
17
artículo
Publicado 2014
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Mediante el presente artículo el autor analiza los defectos y virtudes de los sistemas de dominio de los minerales, permitiéndonos conocer el sistema que adopta nuestraConstitución Política, para seguidamente analizar las características y naturaleza jurídicade la concesión minera por exploración y explotación. Posteriormente, analizará de maneradetallada cada una de las etapas del procedimiento ordinario minero regulado por el TextoÚnico Ordenado (TUO) de la Ley General de Minería y sus Reglamentos, que permitirá a losinversionistas nacionales y extranjeros obtener el título de concesión minera, para finalmenteanalizar, brindar sugerencias y recomendaciones en cada uno de los procedimientos administrativos conexos o vinculados a la concesión minera por exploración y explotación.
18
artículo
Bioremediation is one of the methods to eliminate metallic pollutants from leach mining. Its use provide technical and economical adventages compared to ionic exchange or membranes. In bioacumulation, a type of bioremediation, metal ions are incorporated into microorganism cells, its inconvenient is necessity to prepare cultures media and special conditions to mantain biomass. On the other hand, biosorption uses natural polymers, called biopolymers; functional features of these macromolecules give them metallic adsorption capacity in predetermined conditions; some of them are algae derivatives like alginates, poliamides from hair, colagen from bond tissues or chitin and chitosan extracted from crustaceous shells. Specially chitosan could be obtained from chitin, second most abundant biopolymer in nature next to cellulose, its main source is food industry of prown, shrimp, crab and simila...
19
artículo
Bioremediation is one of the methods to eliminate metallic pollutants from leach mining. Its use provide technical and economical adventages compared to ionic exchange or membranes. In bioacumulation, a type of bioremediation, metal ions are incorporated into microorganism cells, its inconvenient is necessity to prepare cultures media and special conditions to mantain biomass. On the other hand, biosorption uses natural polymers, called biopolymers; functional features of these macromolecules give them metallic adsorption capacity in predetermined conditions; some of them are algae derivatives like alginates, poliamides from hair, colagen from bond tissues or chitin and chitosan extracted from crustaceous shells. Specially chitosan could be obtained from chitin, second most abundant biopolymer in nature next to cellulose, its main source is food industry of prown, shrimp, crab and simila...
20
artículo
Publicado 2020
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Acid mine drainage is a powerful source of contamination of surface and groundwater. For the treatment of acid mine drainage, there are active and passive methods, the latter include artifi cial wetlands, which are being used in industrialized countries, obtaining interesting results. It is important to know the characteristics, types, physical, chemical, and biological processes; choice, design, and construction of artifi cial wetlands; as well as its advantages and disadvantages for its application in the treatment of acid mine drainage. Th erefore, 119 publications were reviewed, organized by common themes. Artifi cial wetlands show to be a good alternative in the treatment of acid mine drainage; However, factors such as size, design, choice plant-bacteria, and weather conditions for its application must be considered. Th e anaerobic wetland is more effi cient in the reduction of acid...
