bluuebunny/crossref_metadata_2025_split huggingface dataset:
Emotional Load on Navigators Under Heavy Ship Traffic
Authors: Grinyak V M , Devyatisilnyi A S , Shulenina A V 
Published: March 2021

Abstract
The paper deals with the navigational safety of marine traffic. It examines the problem of determining the degree of danger of traffic scheme employed in a certain water area. In addition to technical and natural factors, the nature of the psychological and emotional stress on navigators should also be taken into account when assessing the risk of a traffic pattern, which is especially important in high traffic density. Metric is suggested to be introduced as one of possible variations based the model “room-of-maneuver”. The purpose of this work is to study mathematical models and traffic danger estimation techniques which are dimed to be implemented in forward-looking intellectual traffic control systems. The measure of the emotional load is the degree and nature of the filling of the “room-of-maneuver” chart, the ratio of dangerous and safe values of the speed and course of the vessel in conditions of intensity traffic. The characteristic values of this metric for a specific marine area are an important and informative indicator that determines the navigational safety. A promising way to estimate metrics is to use data from the Automatic Identification System. The paper presents a model of traffic data available on open Internet resources, a way to bring them to a form suitable for analysis. The work is accompanied with the results of the study made on location. Estimation analysis of danger to traffic in the waters of the Tsugaru Strait and Inner Sea of Japan has been presented.
Methodical Approach Cleaning Emergency Ventilation Systems Emissions of Harmful Substances
Authors: Zherlykina M N , Yaremenko S A , Kononova M S 
Published: March 2021

Abstract
In the event of an emergency situation at an industrial site with the release of ventilation systems into the atmosphere, a cleaning device is required, which should ensure that the excess of the explosive concentration in the surface layer of the atmosphere is above the normative value. Quantitatively, the release of explosives depends on the degree of depressurization of the system, its volume and pressure in it, the speed of the formation of the team to close the shut-off organs and its execution. The purification device of emergency emissions should have the properties of adequate counteraction to the specified accident factors for equipment that does not have internal self-protection. The emergency emissions are of a probabilistic nature, and therefore the structure of the treatment equipment and its operating conditions must differ from the structure and conditions when cleaning only technological emissions. The cleaning equipment must be able to neutralize large mass outlays of emissions in a short period of time, the operation of the equipment must be built on the principle of waiting for work, that is, in the automated mode, the time of entry into operation should be determined when hazardous concentrations of explosives in the room occur. The performance of the exhaust emergency ventilation and the moment of its activation are determined by the conditions for reaching the concentration of explosives in the room not exceeding 0,1 of the lower concentration limit of flame propagation in gasair explosive mixtures and ensuring dispersion of surface concentrations not higher than the established standard values, and for non-explosive mixtures – Only the second condition.
Technological Features of Well Equipment Work under Production of Oils with Increased and High Viscosity
Authors: Ivanova T N 
Published: March 2021

Abstract
Fields with hard-to-recover reserves include formations with small oil-saturated thickness, low-permeable reservoirs and formations with great depth of occurrence. Oil recovery from these fields is entailed by premature failures of well equipment. To increase technological efficiency of production of high-viscous oils of the well stock equipped with walking beam pumping unit (WBPU) it is proposed to use sucker-rod pump with an external weighting agent. Introduction of this type of pumps will allow increasing the value of minimum load on sucker-rod string during its downward stroke, which will reduce the value of amplitude loads. Additional load, created by external weighting agent, will prevent the rod string from hovering due to high hydrodynamic friction forces caused by the increased and high viscosity of the pumped fluid. The technological efficiency of introducing this pump in wells with WBPU is demonstrated. Calculations made allow us to determine necessary weight of heavy bottom according to viscosity of the produced fluid.
Livestock Machinery Maintenance Efficiency
Authors: Kokieva G E , Voinash S A , Sokolova V A , Gogolevski A S 
Published: March 2021

Abstract
The paper describes the livestock machinery maintenance efficiency and the system of operating mechanisms. Reforming conventional and creating new organizational structures of the economic management in the agrarian sector, which is aimed at improving the efficiency of the industry, predetermines the need for a radical solution to the issue of feasible provision of agricultural producers with all types of resources, and especially technical ones, at this stage. In solving this issue, the relevant differential rates of demand for resources considering the production volume should acquire great importance. It is suggested to increase their role as not obligatory indicators but measures of endowment, the feasibility of using resources, as well as the creation of facilities for the production of the machinery and equipment required to meet the demand of agriculture for them.
Propagation of Waves in the Soil Under the Vibration Effect of Working Bodies on It
Authors: Konstantinov M M , Drozdov S N , Mukhamedov V R , Nuralin B N 
Published: March 2021

Abstract
The article shows the main problems in using the bit for the main tillage. A method for reducing traction resistance by introducing internally oriented vibrations into the design of a tillage tool is proposed. The design of a debalance vibrator, as well as the principle of its operation, which helps to reduce the traction resistance of deep rippers, is considered. Theoretical hypotheses and directions for further research of this method of solving the identified problem are formulated.
Application of the GPR Method for Engineering and Survey Work in Petropavlovsk-Kamchatsky City
Authors: Pavlova V Yu 
Published: March 2021

Abstract
The use of geophysical research methods in engineering and geological surveys qualitatively increases the geological information content of the studied area. The article shows the experience of using the GPR method at various construction sites in Petropavlovsk-Kamchatsky City. All these results are presented on the example of work on objects of different levels of social significance. Thanks to the data obtained, it becomes possible to clarify soil conditions and make the right decisions when designing construction objects, as a result of which engineering surveys become less costly.
Interdependence of Professional Expertise and Occupational Risk of Oil and Gas Field Workers
Authors: Gorlenko N V , Murzin M A 
Published: March 2021

Abstract
The article considers the interdependence of professional expertise and the risks of workers engaged in the development of oil and gas fields. The gradual automation of processes and the introduction of high-tech equipment requires enterprise personnel to have ever-increasing knowledge, unique competences and skills, as well as certain personal qualities or professional expertise. The aim of this work is to determine the influence of the workers’ professional expertise on the occupational risk and to introduce the “human factor” in the procedure for assessing occupational risks. A possible way of assessing a worker and his professional expertise is the so-called System for Assessing and Controlling Occupational Risks, the main purpose of which is to preserve the health of enterprise personnel. To implement this system, we chose Irkutsk Oil Company LLC, namely, the development site of the Yarakta field located in the Irkutsk Region. Based on the analysis and evaluation, it was found that a worker with a high level of professional expertise was able to perform tasks in particularly hazardous production working conditions at the proper level. This approach allows giving an objective assessment of the knowledge, skills and competences of each worker in a particular workplace.
Influence of Positioning of Unregulated Pedestrian Crossings on Traffic Capacity of Urban Streets
Authors: Efimov A D , Nefedov V V , Bessarabov A N 
Published: March 2021

Abstract
Intensive growth of the car ownership level leads to a significant load on separate parts of urban motorway network in cities. Many cities have an established historic development, and in this case the one and only solution of the problem of increase of traffic capacity of urban streets is alternation of the traffic patterns. The conducted researches provide for analytic forecast of the change in traffic load rate in proximity to unregulated pedestrian crossings.
Foreign Experience of Innovation Development of the Mining Industry in the Northern and Arctic Countries
Authors: Tsukerman V A , Kozlov A A 
Published: March 2021

Abstract
The work considers the experience of innovation development of mining sectors of the Arctic foreign countries. Arctic countries have created quite closely linked innovation systems in which the development of infrastructure as well as investments in human capital form and maintain high levels of innovation development of mining sectors. Study and systematization of the relevant foreign experience can become the basis for the development of a state regulation strategy of innovation development of mining sectors in the Arctic zone of the Russian Federation.
Mathematical Modelling of Production Localization with Risks of Technological Disaster
Authors: Soboleva O V , Brizitskaya A V , Dyachenko Yu K 
Published: March 2021

Abstract
In the present paper the propagation of pollutants due to a technological disaster is simulated. This will allow us at the design stage to identify areas of the terrain where the concentration of harmful substances will be increased in the event of an accident. For this purpose, theoretical and numerical analysis of boundary value and extremum problems for the reaction-diffusion-convection model is carried out.
Rationing of the Nickel Content in Soils of the Rainfed Agricultural Landscapes of the Rostov Region
Authors: Kohanistaya N V 
Published: March 2021

Abstract
At present, the problem of conducting a reliable environmental and geochemical assessment of the territory is becoming most acute, which cannot be carried out without the use of reliable and scientifically sound soil pollution criteria. This article used the method of determining regional maximum permissible concentrations (RMPC), developed by V E Zakrutkin et al., which allows to develop reliable, logically corresponding to the local geochemical background, standards and taking into account the features of bioaccumulation of trace elements by various plant crops. As a result of the work, RPDC of nickel content in chernozems and chestnut soils, which are the most common types of soils in the Rostov region, were obtained.
Theoretical Approaches in the Organization of Transport Services by Taxi
Authors: Volodkin P , Ryzhova A , Arkhipov S. 
Published: March 2021

Abstract
Public passenger transport of the Russian Federation provides about 85% of the labor and domestic trips of the population in urban and suburban traffic. Taxi transport is currently the third largest in terms of the volume of services provided, which is primarily associated with the convenience of delivery, the level of prices, the stereotype of consumer behavior, the emergence of new services - services for on-line taxi booking ( aggregators), lack of government regulation of the market, lack of passenger insurance. In recent years, in the concepts of development of the transport sector, transport strategies, much attention has been paid to improving the quality of transport services. In order to improve and expand the passenger transportation market, it is necessary to create favorable market conditions for taxi companies. Today, private transport and passenger taxis can make significant competition to municipal transport. Due to the complexity of the concept of “transport service”, many activities aimed at improving its quality do not produce tangible results due to insufficiently developed methodological foundations. Improving the quality of public services by taxi cars should be based on an objective comprehensive assessment of the state of transport and determining the prospects for their development, based on the forecasting of the main technical and operational indicators.
Comprehensive Modernization of the Chassis of a Two-Link Tracked Transporter
Authors: Dobretsov R Yu , Voinash S A , Ariko S Ye , Sidorov M V 
Published: March 2021

Abstract
The article considers the issue of modernization of the chassis of a two-link tracked transporter by applying the electromechanical drive sections. As a prototype was selected the chassis of the tracked transporters of the DT series with a mechanical transmission, which are produced serial in the Russian Federation. The proposed hybrid power installation concept can be classified as a “parallel-successive” hybrid. The relevance of the concept is determined by the expectation of operational advantages (increase of reliability, maneuverability, controllability, cross-country ability and traction-dynamic properties of the chassis and economy), which will allow to integrate such chassis into transport systems of regions with poorly developed road network infrastructure and will allow to distribution it on difficult terrain. The proposed set of modernization measures allows us to maintain the possibility of using two-link tracked transporter on soils with low bearing capacity, on off-highway, in the climatic conditions of the Far East, Far North, Arctic and Antarctic. Modernization can be carried out in the factory using components produced in the Russian Federation and technologies developed by Russian industry. The proposed design changes expand the operational capabilities of the machine without a significant increase in mass. Technical solutions are applicable when creating multi-link machines.
Analysis of the Influence of the Parameters of the Object of Labor on the Geometric Characteristics of the Levers of the Skidder
Authors: Chernik D V , Karelina A A , Kazancev R V 
Published: March 2021

Abstract
The following logging technologies are known today: logging in the form of trees, whips, assortments and wood chips. The most common are logging in the form of whips and assortments. When logging in the form of whips or trees, a skidder is used, which carries out transportation of felled whips or trees to a loading dock. Blockless skidding machines equipped with technological equipment in the form of a manipulator with a gripper and a conic clamping device are widely used in the Russian forest industry. In the process of moving trees into a conical clamping device, as well as in the process of skidding, interaction forces arise between the grip and the tree, which must be taken into account when designing technological equipment for skidding machines. Due to the large variety of trees, it is also necessary to take into account the mass and geometric characteristics of trees. The article publishes the methodology and results of the study of the influence of breed and category of trees on the geometric characteristics of the capture skidder.
Air Pollution Investigated by Fluctuating Asymmetry of Leaves
Authors: Khusnullin R R , Minakova E A , Latipova V Z , Basyyrov A M 
Published: March 2021

Abstract
Air pollution is an increasing threat in urban as well as rural areas. Particularly, motor vehicles and their exhaust gases cause considerable health risks. In addition to traditional air monitoring, we propose a new method by investigating morphological changes of leaves coming from trees that are located near streets or roads. Shape changes were measured by computing the already established fluctuating asymmetry index. Results of this study indicate that although air pollution may be lower in rural areas, the influence to the ecosystem can be quite comparable to urban areas.
Improving Energy Efficiency of Main Oil Pipeline Systems by Method of Multidimensional Network Optimization of Oil Flows
Authors: Tashbulatov R R , Karimov R M , Bakhtizin R N 
Published: March 2021

Abstract
The aim of this paper is to explore the organization of oil’s traffic from various oilfields through a system of main pipelines adapted to control the rheological properties of the pumped product due to rational oil blending of various oilfields at the nodal points of the pipeline system – at oil pumping stations with storage facilities. The current trend of increasing high-viscosity and high-pour-point oil production and the urgent need of their main pipeline transport are the main problem of our research. Its solution will provide an oil-transfer system from various oilfields that will minimize the total energy consumption for oil pumping. To determine the blending parameters at the nodal points we suggest to use the standard multidimensional optimization algorithm: the simplex method as the main calculation module. The objective function is presented in the form of total energy consumption for oil pumping, depending on the concentration of oil blending at the nodal points of the main oil pipeline system. We propose a method for calculating the objective function for any branched main oil pipeline system using algorithms for constructing a blending tree and determining its properties using the tree traversal algorithm. The issues of determining the limits of possible blending based on mass balance and quality reserve preservation of oils that delivered to consumers were also considered in our paper work. As an example, we solved this problem for an element of a main oil pipeline system with four oil blending nodes in the case of an oil viscosity increase of one of the suppliers. Carrying out multidimensional optimization of energy consumption for this system made it possible to increase its energy efficiency by more than 2%.
Indicators and Factors Resulting in Crisis Phenomena Related to the Environment Hazard of Accumulated Mineral Processing Wastes at Closed Mining Enterprises
Authors: Krupskaya L T , Golubev D A , Kolobanov K A 
Published: March 2021

Abstract
The article presents the results of multi-year research within the limits of closed mining enterprises impact in the Far Eastern Federal District (FEFD). In the last century, here, a large amount of sulphidized toxic mineral processing wastes, stored in tailing dumps, negatively affecting the environment, was accumulated. Unfortunately, their conservation and reclamation have not been carried out; they pose a huge threat not only to the ecosphere, but also to public health. Therefore, the aim of the study was to identify the indicators and factors causing crisis phenomena related to environment hazard of accumulated toxic waste and to substantiate the possibility of reducing their negative impact on biosphere components and human health. Natural and mining technogenic systems formed in the last century by the activity of closed mining enterprises in the Amur River basin, having biosphere importance, were the object of the study.
The following methods were used: systematization, scientific forecasting, physical and chemical, biological methods, as well as mathematical modeling, GIS-technologies, etc.
The article substantiates the necessity of effective solution of the above problem. The present state of tailing dumps has been studied and it has been established that the waste is of the second class (high-hazard). It is revealed that the level of technogenic pollution of environment objects exceeds regional background indicators in dozens (up to 28-46) times, and MPC - in hundreds, up to 225 and more, times. It was shown that the surface of the tailing dumps has not overgrown naturally for 30 years. The results of the patent search and our own experimental research allowed us to develop technological solutions to ensure environment safety of mineral processing toxic wastes. The principles of ensuring environment safety of tailing dumps containing toxic wastes have been developed. New methods of their surface productivity replenishment using innovative approaches have been created, their novelty was confirmed by the Patents of the Russian Federation.
The Collection of Fossil Plants from Perm Deposits of the Urals in the Museum of Karst and Speleology of the Mining Institute of Ural Branch of Russian Academy of Sciences
Authors: Naumkin D V 
Published: March 2021

Abstract
The article provides a brief description of the Permian fossil flora collection stored in the Karst and Speleology Museum of the Mining Institute of the Ural Branch of the Russian Academy of Sciences. Samples were collected in the Perm region and Tatarstan; they belong to the Kungur and Kazan tiers of the Perm system. The collection is dominated by imprints of peltaspermic and ginkgophytes, which corresponds to their prevalence in the studied locations. Among them are very attractive specimens. Unfortunately, the museum’s display capabilities are limited, and only a small part of the collection is available for inspection.
Experimental Studies of the Resistance of Transport Ships at Moving in Composite Broken Ice
Authors: Zuev V A , Kalinina N V , Moskvicheva Y A 
Published: March 2021

Abstract
Arctic ships move in broken ice most of the time. Therefore, forecasting the ice performance of ships when moving in a channel behind an icebreaker or in natural broken ice is relevant at the design stage. For this, theoretical and experimental studies of the movement of various models of ships in a small experimental basin were carried out. The process of modeling and testing of models of active ice navigation ships in a composite ice model is described. Test results and formulas for assessing ice resistance are given. They are derived from the analysis of model tests. Conclusions about the possibility of carrying out and obtaining reliable results of the experiment in small experimental pools are made. The resistance when moving ships in a wide ice channel does not differ from the resistance when moving ships in a field of broken ice. The jamming of ice floes between the edges of the channel and the side occurs when ships move in a narrow channel. Consequently, the “buffering effect” occurs and the resistance increases significantly.
Life-Cycle Assessment of Kelp in Biofuel Production
Authors: Shushpanova D V , Kapralova D O 
Published: March 2021

Abstract
The study is devoted to the life cycle assessment and perspectives of the kelp seaweed of the Russian Federation northern seas water areas usage for the biogas, bioethanol and biodiesel production. The article presents the stages of seaweed growth, its harvesting (including environmental impact of different types), transportation, dewatering and three types of biofuel processing. Conclusions are made on the potential use of kelp seaweed as a feedstock for biofuel production for the northern regions of Russia (on the example of Arkhangelsk region). A diagram of the biofuel production from kelp seaweed life cycle is also presented.