ANALYSIS OF PRODUCTION RISK ON EXAMPLES OF MINERS ‘LABOR

2021 ◽  
pp. 159-175
Author(s):  
Mikhail Kostyuchenko ◽  
◽  
Volodymyr Gogo ◽  
Boris Kobilyansky ◽  
Oleg Kruzhilko ◽  
...  
Keyword(s):  
Mathematical Models ◽  
Situational Analysis ◽  
Coal Miners ◽  
Systematic Analysis ◽  
Production Risk ◽  
Emergency Situations ◽  
Management Processes ◽  
Industrial Risks ◽  
Industrial Risk

Objective: Based on the review of the array of publications to analyze the methods and models of general risk assessment, the nature of industrial risks and management processes on the examples of labor of coal miners. Propose a classification of mathematical models of industrial risk and identify the most appropriate model for the work of miners in the stochastic system “man-machine-environment”. Methodology: Applied to the use of situational analysis, qualimetry, probability theory and risk theory, methods of classification of occupational risks. Results: Based on a systematic analysis of multifactorial risks of emergency situations, the essence of industrial risks and management processes on the examples of coal miners, the dominant causes of industrial risk in the ergatic system (“man – machine – environment”), models and methods of risk research. Scientific novelty: For the first time on the basis of the analysis of the reasons, dynamics and consequences of industrial risks the classification of mathematical models of risks which are adapted to ergatic systems of mine production is offered. Practical value: The need for adequate practical application of risk methods and models for the assessment and measurement of industrial hazards has been proven.

Sustainable regional development as a problem of managing the socio-economic system

Ergodesign ◽  
2020 ◽  
Vol 2020 (2) ◽  
pp. 58-62
Author(s):  
Alexander Anishenko ◽  
Tatyana Krotenko ◽  
Dmitriy Erokhin
Keyword(s):  
Sustainable Development ◽  
Regional Development ◽  
Economic System ◽  
Raw Materials ◽  
Resource Model ◽  
Systematic Analysis ◽  
Development Control ◽  
Sustainable Regional Development ◽  
Three Factor

A systematic analysis of the concept of "sustainable development of the region" is carried out . The classification of factors that affect the process of sustainable development is given. A three -factor resource model for the formation of sustainable development of the region , including human, financial and raw materials, is described. The necessity of systematic monitoring as an element of regional development control is substantiated.

scholarly journals A comprehensive review of sucker rod pumps’ components, diagnostics, mathematical models, and common failures and mitigations

2021 ◽  
Author(s):  
Sherif Fakher ◽  
Abdelaziz Khlaifat ◽  
M. Enamul Hossain ◽  
Hashim Nameer
Keyword(s):  
Mathematical Models ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Gas Industry ◽  
Holistic View ◽  
Comprehensive Review ◽  
Artificial Lift ◽  
Sucker Rod ◽  
Sucker Rod Pump

AbstractIn many oil reservoirs worldwide, the downhole pressure does not have the ability to lift the produced fluids to the surface. In order to produce these fluids, pumps are used to artificially lift the fluids; this method is referred to as artificial lift. More than seventy percent of all currently producing oil wells are being produced by artificial lift methods. One of the most applied artificial lift methods is sucker rod pump. Sucker rod pumps are considered a well-established technology in the oil and gas industry and thus are easy to apply, very common worldwide, and low in capital and operational costs. Many advancements in technology have been applied to improve sucker rod pumps performance, applicability range, and diagnostics. With these advancements, it is important to be able to constantly provide an updated review and guide to the utilization of the sucker rod pumps. This research provides an updated comprehensive review of sucker rod pumps components, diagnostics methods, mathematical models, and common failures experienced in the field and how to prevent and mitigate these failures. Based on the review conducted, a new classification of all the methods that can fall under the sucker rod pump technology based on newly introduced sucker rod pump methods in the industry has been introduced. Several field cases studies from wells worldwide are also discussed in this research to highlight some of the main features of sucker rod pumps. Finally, the advantages and limitations of sucker rod pumps are mentioned based on the updated review. The findings of this study can help increase the understanding of the different sucker rod pumps and provide a holistic view of the beam rod pump and its properties and modeling.

Classification of Mathematical Models for Process Design

2021 ◽  
Vol 41 (11) ◽  
pp. 1045-1048
Author(s):  
S. Yu. Kalyakulin ◽  
E. V. Mitin ◽  
S. P. Sul’din
Keyword(s):  
Mathematical Models ◽  
Process Design

Legal and clinical aspects of emergency burns

2020 ◽  
Vol 22 (4) ◽  
pp. 208-211
Author(s):  
V. A. Sokolov ◽  
I. F. Shpakov ◽  
Ya. L. Butrin
Keyword(s):  
Russian Federation ◽  
Clinical Aspects ◽  
Practical Skills ◽  
Federal Law ◽  
Emergency Rescue ◽  
Medical Evacuation ◽  
Emergency Situations ◽  
The Russian Federation ◽  
Key Questions

The key questions concerning particular sections of the topic Burns in Emergencies are presented. Particular attention is paid to the presentation of terminology. For this, the wording of the Federal Laws, Government Resolutions and Orders of the Ministry of Health of the Russian Federation were used. In accordance with the latter, the classification of emergency situations is given, as well as the criteria by which their damage is assessed. It has been established that the involvement of the forces and means of the Ministry of Defense in the elimination of the consequences of emergency situations is spelled out in the Federal Law. In addition, an argument is made on what basis the citizens of the Russian Federation are obliged to constantly improve their knowledge and practical skills in studying numerous issues of protecting the population, providing assistance to victims, in carrying out emergency rescue operations, etc. situations that led to massive burns. Key features of burns as injuries sustained in emergency situations are formulated. Also, aggravating circumstances are listed that negatively affect the general condition of the victims. The role and place of clinical guidelines as a fundamental development governing the sequence of the organization and content of medical care for those burned at the stages of medical evacuation are indicated. Attention is drawn to the legal significance of the problem.

ANALYSIS OF PRODUCTION RISK FROM CRUSHES OF ROCKS AT EXCAVATION SITES, TAKING INTO ACCOUNT WAYS OF PROTECTION

2021 ◽  
pp. 124-134
Author(s):  
Iaroslav Liashok ◽  
◽  
Serhii Podkopaiev ◽  
Yuliia Simonova ◽  
Hennadii Boichenko ◽  
...  
Keyword(s):  
Practical Significance ◽  
Production Risk ◽  
Venn Diagrams ◽  
Deep Coal Mine ◽  
Geological Conditions ◽  
Rock Collapse ◽  
Available Information ◽  
Decision Making Model ◽  
Excavation Site ◽  
Industrial Risk

Purpose. To assess the production risk of rock collapse in a deep coal mine to identify hazards in the workplaces of the excavation site, taking into account different methods of protection of workings. Methods. A comprehensive approach was used, which included: analysis and generalization of known research; expert evaluation; use of the basic provisions of probability theory and set algebra (Venn diagrams), the method of estimating the production risk of Fine-Kinney; processing, analysis and interpretation of the obtained results. Results. Problems and sources of industrial risk from rock collapses during maintenance of workings, risk-forming factors that contribute to the threat of dangerous events at the excavation site are analyzed. The decision-making model is considered, which is based on the description of situations when the production risk of the dangerous factor “landslides and collapses” in the maintenance of preparatory workings depends on the result of choosing an alternative method of protection of the retractable lane. For excavation sites under the same mining and geological conditions for all workplaces, the probability of receiving consequences from dangerous events due to uncertain conditions of their implementation has been established. It is fixed that the realization of this production risk is influenced by low reliability and inefficiency of the practiced methods of protection of excavations. Risk analysis is defined as the systematic use of available information to identify hazards in the maintenance of long workings. Novelty. A model for monitoring the production risk of rock collapses in excavations of deep coal mines is proposed, which allows assessing the dynamics of the threat at the stage of technical decisions related to the choice and justification of the method of protection of workings taking into account the interaction of risk factors. Practical significance. When formulating measures to reduce the risk of dangerous events at the excavation site, it is necessary to take into account that the production risk of rock collapse while maintaining the workings depends largely on the method of protection and effectiveness of technological measures.

scholarly journals Mathematical Modeling of Main Classes of Stochastic Productive Systems

2019 ◽  
Vol 29 (4) ◽  
pp. 496-509
Author(s):  
Alexander A. Butov ◽  
Maxim A. Volkov ◽  
Viktor N. Golovanov ◽  
Anatoly A. Kovalenko ◽  
Boris M. Kostishko ◽  
...  
Keyword(s):  
Mathematical Models ◽  
Time Distribution ◽  
Just In Time ◽  
Birth And Death Processes ◽  
Multistage System ◽  
Martingale Methods ◽  
Time Class ◽  
Productive Systems ◽  
Time Systems

Introduction. The article deals with mathematical models of two main classes of processes in stochastic productive systems. For a multistage system, conditions of belonging to a “just-in-time” class or a class with infinite support of the time distribution function for productive operations are determined. Materials and Methods. Descriptions and investigations of models are carried out by trajectory (martingale) methods. For “just-in-time” systems and multistage stochastic productive systems, terms and methods of random walks in a random environment and birth and death processes are used. The results are formulated as descriptions of intensity characteristics of equalizers of point counting processes. Results. Two theorems are given and proved; they justify the proposed classification of the mathematical models of productive systems. The criteria of the belonging of the stochastic productive system to the class “just-in-time” are given. A theorem on the incompatibility of groups of “just-in-time” systems and systems infinite support of the time distribution for operations is proved. Discussion and Conclusion. The results show the feasibility of analyzing stochastic productive systems by martingale methods. The descriptions of terms of intensities of the equalizers time of productive processes admit generalization.

scholarly journals The Banff Working Group Classification of Definitive Polyomavirus Nephropathy: Morphologic Definitions and Clinical Correlations

2017 ◽  
Vol 29 (2) ◽  
pp. 680-693 ◽  
Author(s):  
Volker Nickeleit ◽  
Harsharan K. Singh ◽  
Parmjeet Randhawa ◽  
Cinthia B. Drachenberg ◽  
Ramneesh Bhatnagar ◽  
...  
Keyword(s):  
Repeated Measures ◽  
Working Group ◽  
Classification Scheme ◽  
Clinical Presentation ◽  
Interstitial Fibrosis ◽  
The United States ◽  
Systematic Analysis ◽  
Definition Of ◽  
Morphologic Classification

Polyomavirus nephropathy (PVN) is a common viral infection of renal allografts, with biopsy-proven incidence of approximately 5%. A generally accepted morphologic classification of definitive PVN that groups histologic changes, reflects clinical presentation, and facilitates comparative outcome analyses is lacking. Here, we report a morphologic classification scheme for definitive PVN from the Banff Working Group on Polyomavirus Nephropathy, comprising nine transplant centers in the United States and Europe. This study represents the largest systematic analysis of definitive PVN undertaken thus far. In a retrospective fashion, clinical data were collected from 192 patients and correlated with morphologic findings from index biopsies at the time of initial PVN diagnosis. Histologic features were centrally scored according to Banff guidelines, including additional semiquantitative histologic assessment of intrarenal polyomavirus replication/load levels. In-depth statistical analyses, including mixed effects repeated measures models and logistic regression, revealed two independent histologic variables to be most significantly associated with clinical presentation: intrarenal polyomavirus load levels and Banff interstitial fibrosis ci scores. These two statistically determined histologic variables formed the basis for the definition of three PVN classes that correlated strongest with three clinical parameters: presentation at time of index biopsy, serum creatinine levels/renal function over 24 months of follow-up, and graft failure. The PVN classes 1–3 as described here can easily be recognized in routine renal biopsy specimens. We recommend using this morphologic PVN classification scheme for diagnostic communication, especially at the time of index diagnosis, and in scientific studies to improve comparative data analysis.

Classification of mathematical models of technological design

2021 ◽  
pp. 68-71
Author(s):  
Keyword(s):  
Mathematical Model ◽  
Mathematical Models ◽  
Technological Process ◽  
Process Design ◽  
Geometric Parameters ◽  
Technological Design ◽  
Technological Processes ◽  
Technological Preparation

The use of mathematical models is of great importance for the automation of the design of technological processes. Representation of the geometric parameters of the part in the form of mathematical models allows automating the development of the structure and calculation of the parameters of the technological process, which is important for the complete digitalization of the technological preparation of production. Keywords: technological process, design, mathematical model, digitalization. [email protected]

scholarly journals An Integrated Dynamic Financial Analysis and Decision Support System for a Property Catastrophe Reinsurer

1997 ◽  
Vol 27 (2) ◽  
pp. 339-371 ◽  
Author(s):  
Stephen P. Lowe ◽  
James N. Stanard
Keyword(s):  
Decision Making ◽  
Financial Analysis ◽  
Analysis Model ◽  
Conceptual Approach ◽  
Risk And Return ◽  
Management Processes ◽  
Dynamic Financial Analysis ◽  
Day To Day Operations ◽  
Decision Making Tool

AbstractThis paper describes the dynamic financial analysis model currently being used by a property catastrophe reinsurer to manage its business. The model is-an integral part of the day-to-day operations at the Company, and is used as a decision making tool in the underwriting, investment, and capital management processes. The paper begins by describing the framework that the Company uses for risk management. This includes a classification of the risks facing the Company, which is used to define and prioritize their implementation in the model. Also included is a description of the conceptual approach the Company takes to evaluate the tradeoff between risk and return. The paper then goes on to describe the structure and operation of the dynamic financial analysis model and provides examples of its use at the Company, along with illustrative examples of the various types of output it produces.

The evolution of digital relations in the economy and the relevance of financial education in modern society

2020 ◽  
Vol 11 (31) ◽  
pp. 524-535
Author(s):  
Olga Nikolaevna Goncharenko ◽  
Elena Igorevna Lomonosova ◽  
Dmitrii Aleksandrovich Lomonosov ◽  
Vadim Anatolevich Mironchuk ◽  
Lada Victorovna Progunova
Keyword(s):  
Modern Society ◽  
Financial Education ◽  
Traditional Education ◽  
Educational Process ◽  
Socially Responsible ◽  
Systematic Analysis ◽  
Business Structures ◽  
Responsible Behaviors ◽  
Digital Training

Universities enter educational markets with “digital” services, joining in communities, combining digital and traditional education (online and offline), strengthening ties with business structures, universities and schools. The purpose of the work is to carry out a systematic analysis of the evolution of relationships in education in the context of the digital transformation of society. The formation of socially responsible behaviors of students and Tutors of the educational process is taken into account. These aspects are studied in a systematic way and the financial education procedure is proposed. The main results of the article are the analysis of the system and classification of tasks and digital training processes, development of a procedure (algorithm) for the implementation of the financial training program.

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