scholarly journals Management of massif geomechanics through optimization of development technologies

2020 ◽  
Author(s):  
В.И. Голик ◽  
О.Г. Бурдзиева ◽  
Б.В. Дзеранов
Keyword(s):  
Research Problem ◽  
Optimal Level ◽  
Resource Saving ◽  
Field Development ◽  
Main Research ◽  
Stage Of Development ◽  
Development Technology ◽  
Mechanism Of Interaction ◽  
Object Of Study

Актуальность статьи объясняется необходимость поиска новых ресурсов повышение эффективности использования недр, в том числе, за счет рационального использования геомеханических особенностей скальных массивов при техногенном воздействии на них и механизма взаимодействия пород, слагающих массивы скальных месторождений. Объектом исследования служат структурно напряженные скальные массивы Садонского рудного узла. Целью исследований является оценка перспектив технологий разработки месторождений при освоении запасов в условиях техногенной ослабленности массивов. Методы решения основной задачи исследования образуют собой комплекс, в том числе, систематизация связанных с управлением массивом сведений, разработка критериев эффективности добычи руд и формирование концепции ресурсосберегающей технологии разработки месторождений. Результаты и обсуждение результатов. Сформулирована концепция технологии разработки месторождений на основе методов управления состоянием массива путем назначения оптимального уровня напряжений, формируемых совокупностью сейсмотектонических воздействий и техногенной сейсмичности. Дана типизация методов расчета устойчивых пролетов выработок. Приведены примеры решения горнотехнических задач рекомендуемыми методами расчета. Предложена схема-алгоритм взаимодействия параметров управления массивом. Определено, что перспективы технологий разработки месторождений Садонской группы связаны с реализацией концепции управления массивами пород путем регулирования величины напряжений. Доказано, что учет геомеханических факторов позволяет на всех стадиях отработки месторождения корректировать параметры разработки с повышением качества добываемых руд и уменьшением опасности для работающих. В этих условиях удовлетворительные показатели могут быть обеспечены только на первой стадии разработки при выемке первичных камер. Отработка целиков во вторую стадию увеличивает напряжения до критического состояния, что сопровождается потерей запасов или снижением качества руд до убыточных пределов кондиций. Рекомендовано отработку новых запасов и доработку имеющихся запасов осуществлять по комбинированной схеме: ценные руды с закладкой технологических пустот твердеющими смесями, руды с меньшим содержанием металлов выщелачиванием с использованием хвостов подземного выщелачивания для управления напряжениями, а выщелоченные руды выполняют искусственных целиков, перераспределяя техногенные и природные напряжения. The relevance of the article is explained by the need to search for new resources to increase the efficiency of subsoil use, including due to the rational use of geomechanical features of rock massifs with anthropogenic impact on them and the mechanism of interaction of rocks composing rock massifs. The object of study is the structurally stressed rock massifs of the Sadon ore cluster. The aim of the research is to assess the prospects of field development technologies during the development of reserves in conditions of technogenic weakening of arrays. Methods for solving the main research problem form a complex, including the systematization of information related to managing the array, the development of criteria for the efficiency of ore mining and the formation of the concept of resource-saving technology for developing deposits. Results and discussion of results. The concept of field development technology is formulated on the basis of methods for controlling the state of an array by assigning the optimal level of stresses generated by a combination of seismotectonic impacts and technogenic seismicity. Typification of methods for calculating stable spans of workings is given. Examples of solving mining problems with the recommended calculation methods are given. An algorithm-algorithm for the interaction of array control parameters is proposed. It was determined that the prospects for the development of deposits in the Sadon Group are related to the implementation of the concept of managing rock masses by regulating stresses. It is proved that taking geomechanical factors into account allows at all stages of field development to adjust development parameters with an increase in the quality of mined ores and a decrease in the hazard for workers. Under these conditions, satisfactory performance can only be achieved at the first stage of development when the primary chambers are removed. The development of pillars in the second stage increases stresses to a critical state, which is accompanied by a loss of reserves or a decrease in the quality of ores to unprofitable limits. It was recommended that the development of new reserves and the refinement of existing reserves be carried out according to a combined scheme: valuable ores with the laying of technological voids with hardening mixtures, ores with a lower metal content leaching using underground leaching tails to control stresses, and leached ores perform artificial pillars, redistributing technogenic and natural stresses.

scholarly journals Pengaruh Implementasi Sistem Manajemen Mutu ISO 9001:2008 Dan Kemampuan Mengajar Widyaiswara Terhadap Kompetensi Lulusan Diklat

2016 ◽  
Vol 4 (3) ◽  
pp. 37
Author(s):  
Dewi Setiawati
Keyword(s):  
Quality Management ◽  
Management System ◽  
Quality Management System ◽  
Research Problem ◽  
Teaching Quality ◽  
Iso 9001 ◽  
Survey Method ◽  
Main Research ◽  
Independent Variables

This research mainly aims to explore competencies of training graduated which focuses on factors that influence competencies of training graduates, such as the implementation of quality management system ISO 9001:2008 and teaching quality of Widyaiswara. The main research problem addressed in this study is how the implementation of quality management system ISO 9001:2008 and teaching quality of Widyaiswara contribute to competencies of training graduates, both partially and altogether. I conducting this research, explanatory survey method is used with questionairres using likert and interval scales as the data collection techniques, that are distributed to 51 graduates of training at PPPPTK Penjas dan BK. To analyse the data, the study employs PPM (Pearson Product Moment), to investigate the direct and non-direct correlations of dependent and independent variables. Significance tests are administered using F-test and t-test. The results show that (1) the impelementation of quality management system ISO 9001:2008 significantly influences competencies of training graduates; (2) teaching quality of Widyaiswara significantly influences competencies of training graduates; and (3) both the implementation of quality management system ISO 9001:2008 and teaching quality of Widyaiswara significantly influence competencies of training graduates.

scholarly journals Analysis of the impact of the relief on the soil structure in Smolensk region

2021 ◽  
Vol 27 (4) ◽  
pp. 33-46
Author(s):  
Tamara Vatlina ◽  
Sergey Evdokimov
Keyword(s):  
Rural Areas ◽  
Soil Types ◽  
Resource Potential ◽  
Main Research ◽  
Stage Of Development ◽  
Object Of Study ◽  
Modern Geography ◽  
Main Research Topic ◽  
Methodological Aspects ◽  
The Impact

The main research topic is the theoretical justification of integrated regionalization of rural areas to optimize the use of natural agro-potential by developing conceptual frameworks and new methodological approaches to assessing the effectiveness of its use and determining environmentally and economically options for the interaction of natural and production-territorial systems. The problem of creating a theoretical (conceptual) model of integrated regionalization of rural areas using modern geographical methods and GIS technologies to optimize the use of natural agro-resource potential is arisen. The object of study is the natural agropotential of Smolensk region. Considering the complexity character of research we used the model area. The aim of the study is to assess the relationship of the spatial soil’s distribution and relief. For this aim, the model area on the territory of Smolensk region was chosen, digital model was created and analyzed. The research results have independent scientific interest and optimize the using of the natural agro-resource potential. The development of theoretical and methodological aspects of agricultural zoning is the most current problem of modern geography. The solution to this problem is necessary to develop recommendations for agricultural management. At the present stage of development of agriculture in Russia with extremely limited material, labor and financial resources, overcoming of the agrarian crisis will be possible on the basis of more efficient using of the natural potential of the territory. For the first time, the correlation of the spatial distribution of soil cover depending on the relief was studied using the model area of Smolensk region. The series of diagrams with the distribution of soil types by height, the distribution of the prevailing soil types on the slopes of different exposures, distribution of the prevailing soil types on the slopes of different angles have been constructed.

scholarly journals OPTIMIZATION OF WASTE MOTOR OIL IN SHIP DIESEL WITH HIGH BOOST BY WEAR CRITERION

2018 ◽  
pp. 78-86
Author(s):  
Maxim Igorevich Tarasov ◽  
Georgy Alexandrovich Gauk ◽  
Liudmila Anatolievna Semeniuk
Keyword(s):  
Diesel Engine ◽  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Optimal Level ◽  
Engine Oil ◽  
Resource Saving ◽  
Engine Wear ◽  
The Impact

The results of modeling the impact of oil burning on the condition of the ship forced trunk piston diesel engine when using lubricants with different operating properties. The dependence of wear rate on oil fume, the quality of used lubricants and marine diesel forcing is obtained by modeling wear using the theory of planning experiments. The area of minimal wear has been determined. There has been detected the most efficient waste oil providing favorable conditions for resource-saving operation of the internal combustion engine. It is inferred that reduction of engine oil fume changes the main parameters of its aging. At the same time, the intensity of oil aging in main directions and of engine wear reduce from 0.75 to 2.25 g/(kW∙h), whereas the fume increases. Its further increase is accompanied by an increase in the rate of oil aging and engine wear. The detected "fracture" depending on И( g y) after passing the border g yopt = 2.25-2.5 g/(kW∙h) is stipulated by different ratio of oil exchange in the lubrication system and the ingress of gases into the crankcase. There has been determined the degree of oil burning, at which sludging and lacquer formation of the internal combustion engine is least intense. The smallest carbon deposits on pistons and in the crankcase of the engine can be observed when the diesel engine is operating in the zone of optimal carbonation. Experimentally, the dependence of tribotechnical properties, in particular, wear of insoluble products of oil aging has been detected at different degrees of oil burning. It is revealed that these characteristics also depend on the quality of the used fuels and lubricants and the conditions of formation and turnover of the oil film on the mirror of the cylinder, the thermal effect on it of the engine workflow. The result of simulation is the prediction of resource-saving operation of marine trunk diesel engines by maintaining oil fume at the optimal level.

scholarly journals Invisible Corruption in Iraqi Universities: Causes and Solutions

2017 ◽  
Vol 25 (1-2) ◽  
pp. 47-61
Author(s):  
Muslim Alawi Alsaad ◽  
Abdulridha Nasser Mohsen
Keyword(s):  
High Education ◽  
Research Problem ◽  
Education Sector ◽  
High Education Sector ◽  
Main Research ◽  
Common Interests ◽  
Theoretical Evidence ◽  
The University

Corruption is a global phenomenon driving towards the non-productive activities, and its result becomes more risky if corruption is widespread. Corruption in high education institutions has detrimental consequences on the quality of education, the student’s ethics, the future opportunities for students, and the quality of future leadership. This paper aims to explore the role of universities in the spread of invisible corruption at the Iraqi high education sector. The main research problem is an attempt to explore the role of students, academic and other staff in the spread of invisible corruption at the Iraqi high education sector, and what best solution are used to limit its effects. This study pursues both deductive and inductive approach and uses the analysis which is supported by both theoretical evidence and statistical techniques. The study was conducted at the University of Basra and the Southern Technical University, where, the sample included professors with experience and specialization in the field of teaching and analyzing corruption in high education. The results showed limited visible corruption in the Iraqi education sector, while Invisible corruption was the most common in the Iraqi high education sector, because of the difficulty of discovering its practices. The spread of this type of corruption was due to the common interests between students and academic and administrative bodies. This requires Popularizing the culture of integrity and exposing corruption and its dangers in the external and internal community levels of Iraq's high education sector.

scholarly journals Improvement of oil and gas field development technology

2021 ◽  
Vol 1 (79) ◽  
pp. 76-80
Author(s):  
B. M. Nuranbayeva ◽  
◽  
E. S. Oryngozhin ◽  
D. R. Alaguzov ◽  
Keyword(s):  
Oil Recovery ◽  
Oil And Gas ◽  
Gas Field ◽  
Field Development ◽  
Oil Reserves ◽  
Original Volume ◽  
Stage Of Development ◽  
Development Technology ◽  
Oil And Gas Field ◽  
Last Stage

During the period of depletion of the main oil reserves in fields entering the last stage of development due to the priority development of highly productive highly permeable reservoirs, an increasing proportion of residual reserves become difficult to recover.Therefore, it becomes relevant to use effective methods of increasing oil recovery in existing fields, most of the original volume of geological reserves remains in the deposits. One of these methods is unsteady waterflooding, which has proven its effectiveness in a number of fields.

scholarly journals TECHNOLOGY OF CULTIVATION AND ITS INFLUENCE ON THE HARVEST AND QUALITY OF FRUITS OF WATERMELON

2020 ◽  
Vol 10 (5(74)) ◽  
pp. 25-29
Author(s):  
T.A. Sannikova ◽  
V.A. Machulkina ◽  
A.V. Gulin
Keyword(s):  
Physical Properties ◽  
Technological Process ◽  
Growth And Development ◽  
Farming Systems ◽  
Resource Saving ◽  
Soil Aeration ◽  
Stage Of Development ◽  
Moisture Supply ◽  
Market Relations

In modern farming systems the basis of the technology of cultivation of crops, becomes the regulation of the physical properties of the soil, the moisture supply of plants, the control of weeds, diseases and pests. Therefore, the introduction of resource-saving elements of technology for the care of watermelon crops, allowing to obtain stable yields remain relevant at this stage of development of market relations. It has been established that in order to increase the yield of watermelon fruits, it is necessary to carry out up to 4 cultivations that promote soil aeration and the destruction of weeds during the period of growth and development of plants. It was revealed that the best is differential watering, in which the standard yield is from 92.8% to 96.8%. Based on the systematization of the scientifically-based data obtained, the VNIIOOB staff developed OST 10316-2002 Food melons. Typical technological process, whichis approved and put into operation in Russia.

scholarly journals SYSTEM CONCEPT OF ENERGY- RESOURCE SYNERGY AND METHODOLOGY OF TECHNOLOGICAL-INNOVATIVE MANAGEMENT ON MOTOR TRANSPORT

2020 ◽  
Vol 1 (46) ◽  
pp. 365-374
Author(s):  
Khabutdinov R ◽  
Keyword(s):  
Transport System ◽  
Innovation Management ◽  
Energy Resource ◽  
Target Function ◽  
Resource Saving ◽  
Motor Transport ◽  
Transport Services ◽  
Innovative Management ◽  
Object Of Study

The article discusses the concept of energy-resource synergy in motor transport and in the motor transport system, as well as the main provisions of the methodology of technological innovation management in motor transport. Proposed: a new epistemological paradigm of the motor transport as a sphere of material production; technologically innovative concept of energy-resource synergy in the transport system; a set of methods for technologically innovative management of energy - resource quality of transport services and for resource-synergistic improvement of the functions of the transport system and the subsystem "Motor transport"; analytical model of the target function of strategic management in motor transport. A single energy- resource mechanism for the functioning of motor transport and the material integrity of the motor transport system has been established. The ways of innovative resource saving on transport and in infrastructure subsystems are revealed. The object of study is the structural and functional organization of motor transport and motor transport system. The purpose of the work is the formation of a system-synergistic target function of project management at highly technological and intensively resource-saving transport services based on the innovative requirements and the concept of energy-resource synergy in the transport system. The research method is a theoretical analysis and synthesis of the conceptual target function of the technology and innovation management in transport, taking into account the concept of energy-resource synergy in the transport system. The results of the article can be used to implement system-synergistic and conceptual-innovative management in transport and in other subsystems. Predicted assumptions about the development of the object of study are the implementation of a technologically innovative mechanism of energy-resource synergy in the motor transport and in the motor transport system, taking into account their structures and functions. KEYWORDS: CONCEPT, TECHNOLOGICAL INNOVATIONS, MOTOR TRANSPORT, SYSTEM, FUNCTIONS, RESOURCES, ENERGY-RESOURCE SYNERGY, LIFE CYCLE, QUALITY OF TRANSPORT SERVICES, MANAGEMENT.

Driving Torsion Scans with Wavefront Propagation

2020 ◽  
Author(s):  
Yudong Qiu ◽  
Daniel Smith ◽  
Chaya Stern ◽  
mudong feng ◽  
Lee-Ping Wang
Keyword(s):  
Potential Energy ◽  
Force Field ◽  
Degrees Of Freedom ◽  
Computational Cost ◽  
Initial Guess ◽  
Field Development ◽  
Force Field Development ◽  
Wavefront Propagation ◽  
Open Source Software Package

<div>The parameterization of torsional / dihedral angle potential energy terms is a crucial part of developing molecular mechanics force fields.</div><div>Quantum mechanical (QM) methods are often used to provide samples of the potential energy surface (PES) for fitting the empirical parameters in these force field terms.</div><div>To ensure that the sampled molecular configurations are thermodynamically feasible, constrained QM geometry optimizations are typically carried out, which relax the orthogonal degrees of freedom while fixing the target torsion angle(s) on a grid of values.</div><div>However, the quality of results and computational cost are affected by various factors on a non-trivial PES, such as dependence on the chosen scan direction and the lack of efficient approaches to integrate results started from multiple initial guesses.</div><div>In this paper we propose a systematic and versatile workflow called \textit{TorsionDrive} to generate energy-minimized structures on a grid of torsion constraints by means of a recursive wavefront propagation algorithm, which resolves the deficiencies of conventional scanning approaches and generates higher quality QM data for force field development.</div><div>The capabilities of our method are presented for multi-dimensional scans and multiple initial guess structures, and an integration with the MolSSI QCArchive distributed computing ecosystem is described.</div><div>The method is implemented in an open-source software package that is compatible with many QM software packages and energy minimization codes.</div>

scholarly journals The possibility of using lactic additives and sonochemical technology in the production of preserves

2020 ◽  
Vol 164 ◽  
pp. 06012
Author(s):  
Vera Demchenko ◽  
Irina Asfondiarova ◽  
Nina Katkova ◽  
Marina Ivanova ◽  
Elena Belokurova
Keyword(s):  
Ultrasonic Treatment ◽  
Storage Temperature ◽  
Food Additives ◽  
Microbiological Quality ◽  
Point Scale ◽  
Resource Saving ◽  
High Quality ◽  
Processing Power ◽  
Fish Product

The priority in improving the existing methods of processing fish is salting with the use of food additives with different functional orientations. The aim of the study was the development of preserves with the introduction of lactate-containing additives and using sonochemical technologies; examination of the quality of the products obtained according to organoleptic and microbiological safety indicators. The article proposes a resource-saving technology for the production of fish products with prolonged shelf life due to the use of a complex food additive consisting of lactic, acetic, propionic acids and their salts in different proportions with subsequent ultrasonic treatment using the ultrasonic generator of the Wave series model UZTA-0 2/22-OM. There was established the optimal mode of using the ultrasonic processing power of 75 W / m2 in the manufacture of fish preserves from herring. Organoleptic and microbiological quality indicators were studied during storage of preserved products with the addition of additives and ultrasonic treatment compared to the control. Organoleptic assessment was carried out on a five-point scale, microbiological indicators were studied by standard methods. The Dilactin Forte Plus dietary supplement in the composition of preserves in the amount of 3% and in combination with the use of sonochemical technologies makes it possible to obtain a safe high-quality fish product. Manufactured preserves at a storage temperature of 0 ± 2 ° C can maintain their high quality for 5 months.

scholarly journals Individual quality of life and the environment – towards a concept of livable areas for persons with disabilities in Poland

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Izabela Grabowska ◽  
Radosław Antczak ◽  
Jan Zwierzchowski ◽  
Tomasz Panek
Keyword(s):  
Quality Of Life ◽  
Environmental Conditions ◽  
Basic Research ◽  
Research Problem ◽  
Individual Characteristics ◽  
Living Conditions ◽  
Special Focus ◽  
Persons With Disabilities ◽  
The Relationship

Abstract Background The United Nations Convention on the Rights of Persons with Disabilities [1] highlights the need to create proper socioeconomic and political conditions for persons with disabilities, with a special focus on their immediate living conditions. According to the Convention, these conditions should be built to ensure that persons with disabilities have the potential to enjoy a high quality of life (QoL), and this principle is reflected in the notion of livable areas. The crucial aspect of this framework is the relationship between the individual QoL and the environment, broadly understood as the socioeconomic as well as the technical conditions in which persons with disabilities function. Methods The basic research problem was to assess the relationship between individual QoL for the population with disabilities as a dependent variable and livability indicators as independent variables, controlling for individual characteristics. The study used a dataset from the EU-SILC (European Union Statistics on Income and Living Conditions) survey carried out in 2015 in Poland. The research concept involved several steps. First, we created a variable measuring the QoL for the entire population with disabilities. To measure the multidimensional QoL, we used Sen’s capability approach as a general concept, which was operationalized by the MIMIC (multiple indicators multiple causes) model. In the second step, we identified the livability indicators available in the official statistics, and merged them with survey data. Finally, in the last step, we ran the regression analysis. We also checked the data for the nested structure. Results We confirmed that the general environmental conditions, focused on creating livable areas, played a significant role in shaping the QoL of persons with disabilities; i.e., we found that the higher the level of the local Human Development Index, the higher the quality of life of the individuals living in this area. This relationship held even after controlling for the demographic characteristics of the respondents. Moreover, we found that in addition to the general environmental conditions, the conditions created especially for persons with disabilities (i.e., services for this group and support for their living conditions) affected the QoL of these individuals. Conclusions The results illustrate the need to strengthen policies aimed at promoting the QoL of persons with disabilities by creating access to community assets and services that can contribute to improving the life chances of this population.

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