scholarly journals ASSESSMENT OF THE COMPLEXITY OF OCCURRENCE AND GEOLOGICAL VARIABILITY OF THE QUALITY OF HIGH-GRADE ORES DURING THE DEVELOPMENT OF THE C-2 DEPOSIT

2021 ◽  
Vol 2 (11(75)) ◽  
pp. 10-15
Author(s):  
N. Turtygina ◽  
A. Okhrimenko
Keyword(s):  
Underground Mining ◽  
Ore Deposits ◽  
Quality Level ◽  
Processing Plant ◽  
Significant Heterogeneity ◽  
Joint Stock Company ◽  
High Grade ◽  
Stock Company ◽  
Polar Division

The work is devoted to a very topical issue - predicting quality indicators in underground mining of ore deposits. In this work, the conditions and ways of improving the quality of ores during mining were studied on the example of deposits of rich ores in the northern flanks of the Talnakh and Oktyabrsky deposits of Talnakh. The studies were carried out in specific conditions at the mining enterprises of the Polar Division of the Public Joint Stock Company Mining and Metallurgical Company Norilsk Nickel. The northern deposits of the Talnakhskoye deposit represent the main prospect for replenishing the retired production capacities for the extraction of high-grade ores. The significant heterogeneity of the distribution of the metal content in industrial reserves of rich copper-nickel ores is the primary cause of high fluctuations in the quality of ore flow, which requires the use of the most advanced mining technologies to control the quality of ores during extraction. The process of forming the required quality level of mined ores at the mines of the Polar Division of PJSC MMC Norilsk Nickel is of paramount importance. However, during the development of deposits of «rich» ores in the ore stream «mine - processing plant», significant fluctuations in the quality of the ore mass are formed, which lead to losses of metals in the process of concentration and during metallurgical redistribution, thereby reducing the economic efficiency of the entire mining and metallurgical complex, as determines the relevance of the work.

scholarly journals Evaluation of the Quality of Irrigation Machinery by Monitoring Changes in the Coefficients of Uniformity and Non-Uniformity of Irrigation

Agronomy ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1499
Author(s):  
Ján Jobbágy ◽  
Peter Dančanin ◽  
Koloman Krištof ◽  
Juraj Maga ◽  
Vlastimil Slaný
Keyword(s):  
Repeated Measurements ◽  
Joint Stock Company ◽  
Stock Company ◽  
Uniformity Coefficient ◽  
Quality Of Work ◽  
Total Length ◽  
Irrigation Uniformity ◽  
Wide Range ◽  
The Impact

Recently, the development of agricultural technology has been focused on achieving higher reliability and quality of work. The aim of the presented paper was to examine the possibilities of evaluating the quality of work of wide-area irrigation machinery by monitoring the coefficients of uniformity and non-uniformity of irrigation. The object of the research was pivot irrigation machinery equipped with sprinklers with a total length from 230 to 540 m. The commonly applied quality of work parameter for wide-range irrigators is the irrigation uniformity coefficient according to Heermann and Hein CUH. Work quality evaluations were also carried out through other parameters applicable in practice, such as irrigation uniformity coefficients calculated according to Christiansen CU, Wilcox and Swailes Cws, and our introduced parameters, the coefficient ar (derived from the degree of unevenness according to Oehler) and the degree of uniformity γr (derived from the degree of non-uniformity according to Voight). Other applied parameters for determining the quality of work of wide-range irrigation machinery were the coefficients of irrigation uniformity according to Hart and Reynolds CUhr, further according to Criddle CUcr and subsequently according to Beale and Howell CUbr. Next, the parameters of the non-uniformity coefficient according to Oehler a, the coefficient of variation according to Stefanelli Cv, the degree of non-uniformity according to Voigt γ and the degree of non-uniformity according to Hofmeister Ef were evaluated. Field tests were performed during the growing season of cultivated crops (potatoes, corn and sugar beet) in the village of Trakovice (agricultural enterprise SLOV-MART, southwest of the Slovakia) and in the district of Piešťany (Agrobiop, joint stock company). During the research, the inlet operating parameters (speed stage, inlet pressure, irrigation dose), technical parameters (number of sprayers, total length, number of chassis) and weather conditions (wind speed and temperature) were recorded. The obtained results were examined by one-way ANOVA analysis depending on the observed coefficient or input conditions and subsequently verified by Tukey and Duncan tests as needed. Irrigation uniformity values ranged from 67.58% (Cws) to 95.88% (CUbh) depending on the input conditions. Irrigation non-uniformity values ranged from 8.58 (a, Ef) to 32.42% (Cv). The results indicate a statistically significant effect of the site of interest and thus the impact of particular field conditions (p < 0.05). When evaluating the application of different coefficients of irrigation uniformity, the results showed a statistically significant effect only in the first test (p = 0.03, p < 0.05). During further repeated measurements, the quality of work increased due to the performed inspection of all sprayers and the reduction in the influence of the wind.

Experience in the development of innovative underground geotechnologies for mining of ore deposits

2020 ◽  
pp. 338-350
Author(s):  
I. V. Sokolov ◽  
Y. G. Antipin ◽  
N. V. Gobov ◽  
I. V. Nikitin
Keyword(s):  
Systematic Approach ◽  
Underground Mining ◽  
Mineral Resources ◽  
Environmental Safety ◽  
Ore Deposits ◽  
Operating Costs ◽  
Processing Waste ◽  
Ore Preparation ◽  
Additional Value

Based on an analysis of the design principles and practice of underground mining of ore deposits, the most significant features, trends to develop and directions to enhance of underground geotechnology in the field of opening and preparation, mining systems, filling works and ore preparation have been established. The main signs of innovation - scientific research and implementation in production in order to obtain additional value, are highlighted. Various approaches to the development of innovative underground geotechnologies are shown and a methodology for their justification is formulated based on a systematic approach implemented in the framework of the concept of integrated development of mineral resources and on the principles of economic efficiency, industrial and environmental safety, completeness of subsoil development. The experience of the IM UB RAS on the development and implementation of innovative underground geotechnologies in the design and industrial operation of a number of ore deposits is given, which significantly increased the completeness and quality of ore extraction from the subsoil, increased labor productivity in sinking and stoping works, reduced capital and operating costs for ore mining and to utilize mining and processing waste in the mined-out space.

scholarly journals Economic-legal aspects of business assets definition and its effectiveness analysis

2004 ◽  
Vol 52 (6) ◽  
pp. 189-210
Author(s):  
Oldřich Tvrdoň ◽  
Radmila Presová ◽  
Martin Přibyl
Keyword(s):  
Legal Aspects ◽  
Plant Production ◽  
Joint Stock Company ◽  
The European Union ◽  
Stock Company ◽  
Corn Production ◽  
Effectiveness Analysis ◽  
The World ◽  
Definition Of

The thesis “Economic-legal aspects of business assets definition and its effectiveness analysis” analyses the contribution of business assets in joint-stock company Svornost Těmice. The company operates in the field of agricultural primary production. Focus of plant production still keeps the traditional composition of plants grown. In connection with increasing the quality of effectiveness of the machinery the area of corn-production will be expanded. In animal production, the company specialises on the pig-feeding and milking-cows.The theoretical part includes the opinions of the world economists and managers on the definition of basic concepts related to business assets. These opinions are confronted with those of Czech authors, in order to acquaint students of the Faculty of Business and Economics with them – focusing on students of the Trade Management specialisation.The practical part is focused on analysis of effectiveness of business assets in the selected company. It have confirmed that managers of this business have to improve the intensity of exploitation of the asset base and thus to reach its higher effectiveness. This task is necessary for operation in the intensive-competition environment formed after the entrance into the European Union.

SuperShip: Journey of a Successful Entrepreneur

2020 ◽  
Vol 9 (2) ◽  
pp. 295-305
Author(s):  
Viet Quoc Cao
Keyword(s):  
Quality Of Service ◽  
Customer Satisfaction ◽  
Single Case ◽  
Quality Of Services ◽  
Joint Stock Company ◽  
Stock Company ◽  
Steady Growth ◽  
Freight Forwarding ◽  
Customer Satisfaction And Loyalty

SuperShip Vietnam, a Joint Stock Company, founded in 2015, specializes in freight forwarding and express delivery services for e-commerce transactions in Vietnam. In 4 years, it has come a long way from a start-up with only five members and VNĐ 40 million (~US$1,800) as the capital. Difficulties and challenges faced by the firm were incredibly huge. Nevertheless, with slow but steady growth, the company utilized the quality of services as the foundation to build customer satisfaction and loyalty rather than taking the route of price-based competition. SuperShip has grown steadily to become a prestigious and well-established enterprise in the fast-moving freight forwarding market. SuperShip is not yet satisfied with its multiple accomplishments as there are still many peaks to conquer to achieve the company’s vision. The case highlights as to how through participation in union-association and volunteering activities; implementing small business plans to earn extra money during college days can help in developing leadership, negotiation and interpersonal skills and hone the entrepreneurship trait. Dilemma For steady growth, should the company utilize the quality of services as the foundation to build customer satisfaction and loyalty or take the route of price-based competition. Theory: Sustainability of a business in goods delivery sector Type of the case: Experience-based applied single case study Protagonist: The owner of the firm Options Copy the business model of the two large players in the existing market and offer similar services. Raise the benchmark of customer satisfaction and loyalty by designing and delivering superior quality of service with the help of well trained and empowered employees. Discussions and Case Questions For a training firm is it better to focus on a single service and performing it with excellence than offering many courses. How did SuperShip created its point of difference? How the firm can grow further while raising funds at a low cost? What is the next level of quality of service that the firm should target?

scholarly journals Use of residual rock strength in bearing structures in underground ore mining

2019 ◽  
Vol 20 (2) ◽  
pp. 193-203
Author(s):  
Vladimir I. Golik ◽  
Yury V. Dmitrak ◽  
Oleg Z. Gabaraev ◽  
Yuri I. Razorenov
Keyword(s):  
Bearing Capacity ◽  
Carrying Capacity ◽  
Critical Analysis ◽  
Rock Strength ◽  
Underground Mining ◽  
Ore Deposits ◽  
Theory And Practice ◽  
Mining Engineering ◽  
Scientific Support

The relevance of the study is explained by the need to improve technological processes with the increasing complexity of the development of ore deposits with an increase in the depth of development, the use of powerful technology and an increase in stresses in arrays of ore-bearing rocks. The need to minimize the risk of mining requires the development and use of tools for managing an array. The purpose of this study is to systematize information about the theory and practice of using the residual bearing capacity of destroyed rocks from the practice of underground mining to improve the methods used to control the geomechanics of ore-bearing arrays. The complex of research includes analytical, full-scale, laboratory and theoretical methods that are used to identify the phenomenon of the use of the residual carrying capacity of destroyed rocks. To achieve this goal information on the use of bearing floors made of intact and destroyed ores and rocks, as well as other materials, is systematized. A brief description of the scientific support of mining engineering tasks is given. The phenomenon of the use of residual bearing capacity of disturbed rocks in the structure arising in the mountain massif is characterized. A critical analysis of the concepts of array management is given. Considered alternative options for creating structures for solving problems of reducing the health risk of workers and improving the quality of ores. A new typification of structures using the residual strength of destroyed rocks is given. It has been proved that in underground mining there is an opportunity to realize the residual bearing capacity of the destroyed rocks to create structures with desired properties, which contributes to solving the tasks of labor protection and improving the quality of ores.

scholarly journals The Ways to Optimize Costs of Enterprise on the Example of PJSC «Ukrainian Railways»

2020 ◽  
Vol 11 (514) ◽  
pp. 282-287
Author(s):  
I. V. Nagorna ◽  
◽  
Y. Y. Halkina ◽  
Keyword(s):  
Economic Activity ◽  
Structural Changes ◽  
Cost Management ◽  
Optimal Level ◽  
Joint Stock Company ◽  
Net Income ◽  
Stock Company ◽  
Composition And Structure ◽  
The Impact

The article is aimed at finding ways to optimize costs at the production subdivision «Operational wagon depot Kupyansk» of the Regional division «Southern Railway» of the Private Joint Stock Company «Ukrainian Railways» on the basis of the performed analysis of the composition and structure of costs, profitability, the impact of the amount of costs on performance indicators, the level of costs per 1 UAH of the consummated services, and operational analysis. The views of scholars on the term «costs» are explored. It is defined that cost management is quite a complex and important process in the course of carrying out economic activity along with determining the quality of further results of enterprise. The main methodological bases of cost management, economic condition of the enterprise are researched. Optimization measures for further development of the enterprise are proposed, which will allow to use its resources more efficiently, to achieve an increase sales and maximize profits. The authors provide recommendations on managing the enterprise costs in order to stimulate the growth of competitiveness. The focus is placed on the mechanism of minimizing the costs of the enterprise in the total amount of net income, because efficient use of costs can not be carried out without structural changes in the sphere of their management. It is identified that cost management is an interconnected complex of works, which forms and influences the behavior of costs during economic activity, as well as is aimed at achieving the optimal level of costs. The proposed measures as to optimizing costs can be used by directors and managers of the enterprise to make informed decisions on the prospective development of the enterprise.

scholarly journals Evaluation of harvest losses within a full mechanised grape harvest

2013 ◽  
Vol 61 (3) ◽  
pp. 751-756 ◽  
Author(s):  
Pavel Novák ◽  
Patrik Burg
Keyword(s):  
Operating Conditions ◽  
Joint Stock Company ◽  
Stock Company ◽  
A Value ◽  
Comparable Quality

A contribution deals with an evaluation of harvest losses within a full mechanised berries harvest using two self-propelled harvesters GREGOIRE G 152 and NEW HOLLAND VL 6060 differing in kinds of harvesting and catching mechanisms. Observation was done in vineyards of ZVOS Hustopeče joint–stock company at harvest of Müller Thurgau and Lemberger varieties in a period 2009–2010. Results gained under operating conditions showed that both self-propelled harvesters reached a comparable quality of a harvested product. There were observed losses by a slump in a case of using GREGOIRE G 152 harvester 0.8–1.45%. By using NEW HOLLAND VL 6060 the losses were 0.86–1.52% and data were gained with a respect to vine condition, the variety and the vintage. Next to losses by the slump also losses as non-harvested product were observed. Using GREGOIRE G 152 were reached 1.08–2.56% of non-harvested product losses and in a case of NEW HOLLAND VL 6060 similarly 1.17–2.22%. However a value of the non-harvested product losses cannot be perceived absolutely because in a practice the non-harvested grapes are consequently picked up manually. Total losses perceived as a sum of losses by the slump and non-harvested losses values were at GREGOIRE G 152 harvester 2–4% and at NEW HOLLAND VL 6060 harvester 2–3.7% of total hectare yield.

scholarly journals Analysis of the Efficiency of Using Assets Based on Accounting

2021 ◽  
pp. 168-180
Author(s):  
Denis Lysenko ◽  
Leyla Akgün
Keyword(s):  
Economic Analysis ◽  
Practical Interest ◽  
Scientific Article ◽  
Joint Stock Company ◽  
Stock Company ◽  
Industrial Companies ◽  
Federal Research ◽  
Analytical Work ◽  
Effective Use

Considering the advance of technologies and methods aimed at improving the quality of management of the asset complex, new requirements for justifying the effectiveness of funds invested in assets are constantly appearing, they are constantly evolving and becoming more viable, which determines the theoretical and practical interest in the issues studied by the authors. The main purpose of the article is to offer methodological developments and recommendations for analyzing the effectiveness of the use of the asset complex by a research and production concern on the basis of financial statements, to identify reserves and give recommendations for more efficient usage of resources. The subject of the research is activities of an enterprise related to the management of the asset complex. In addition to the introduction of new methods of economic analysis, the authors also developed a generalized model for managing the asset complex in the form of a software product. This model was applied to two real research and production complexes, one of which is the largest Federal Research and Production Center Closed Joint Stock Company Research and Production Concern (Association) “Energia”. The developed model can be applied with the purpose of effective management of the asset complex by the largest industrial companies. The results of the research presented in this scientific article will allow specialists to improve the quality of analytical work in the field of economic analysis of enterprise assets and the search for reserves for their effective use.

Doing business in the non-ferrous metals industry: how to survive in a mature market in crisis

2015 ◽  
Vol 5 (1) ◽  
pp. 1-10
Author(s):  
Igor Vladimirovitch Lipsits ◽  
Elena Alexandrovna Vigdorchik
Keyword(s):  
Strategic Management ◽  
Capacity Utilization ◽  
Processing Plant ◽  
Joint Stock Company ◽  
Stock Company ◽  
Content Type ◽  
Ferrous Metals ◽  
Non Ferrous Metals ◽  
Metals Processing

Subject area Crisis management, Strategic management. Study level/applicability This case study can be used for teaching MBA and pre-experience Masters students as part of a strategic management course. Case overview This case study tells the story of Kirov non-ferrous metals processing plant located in Kirov (USSR, presently the Russian Federation). Founded in 1956, this company had long been one of the USSR's leading manufacturers in the industry of non-ferrous metals processing. The situation changed dramatically in the first half of 1990s. During those years, instead of state-planned economy, Russia saw the formation of market economy. It was the first time when the company (as a result of privatization, it became a joint-stock company with a small number of pure portfolio investment owners) was faced with the need to look for marketing outlets for its products on its own. At the same time, after having been privatized, the company could not receive government investments anymore. Due to all these conditions, in 1995, capacity utilization in this company fell to 16 per cent, and it appeared to be on the verge of bankruptcy. Expected learning outcomes The main learning objectives of the case study are: to develop students' skills to analyze complex managerial situations; to help students in understanding the logic of company's strategic choice, depending on the stage of the market life cycle (especially, in case of mature markets); and to provide the training for the students' ability to justify management decisions using the example of companies in B2B markets. Supplementary materials Teaching Notes are available for educators only. Please contact your library to gain login details or email [email protected] to request teaching notes.

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