bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of the beats of separation sieve pans
Authors: Shatsky V P , Orobinsky V I , Axeonov I I , Kornev A S 
Published: February 2021

Abstract
To ensure high productivity of grain production reliable operation of grain cleaning equipment is required. The process of cleaning seed material is connected to significant vibration loads some of which have an impact on the separation process and the operational reliability of the machine components. To combat harmful vibrations a theoretical analysis of the beats occurring during the sieve separation of grain was made. The law of motion of the mass center of the sieve pan is derived as a function from time over a period of oscillating. The analytical solution of the obtained equation allows determining the horizontal and vertical displacements of the mass center at every moment of time. Based on this motion, accelerations and related inertial forces are determined. These forces take on sufficiently large values, which lead to beats of the indicated separation devices. To determine the forces leading to these beats, using the d’Alembert’s principle, equilibrium equations are compiled, the solution of which allows determining the total horizontal force and reaction force in the suspension. The equations of equilibrium include the forces of tension on bending of the suspension rods. It has been established that a rational choice of the geometric characteristics of these suspensions can significantly reduce the forces acting on the drive of the sieve pan and, as a result, on the horizontal and vertical runouts.
Design of energy-loaded systems using the Neo4j graph database
Authors: Zhidchenko T V , Seredina M N , Udintsova N M , Kopteva N A 
Published: February 2021

Abstract
The article presents a study of the tasks that determine the features of power-loaded networks, and tasks that are solved using graph models for power-loaded networks. The tasks that determine the features of power-loaded networks are communication check, isolation of network components and components, combinatorial tasks on graphs, calculation of flow distribution, graph simplification, optimal impact on the power grid, and determination of power proportions. This article presents the high-level architecture of Neo4j. Neo4j is an open-source graph database management system implemented in Java and is considered the most comprehensive and promising graph database management system. In comparison with modelling a graph database using a relational database management system, this approach allows applying additional optimization in the case of data with a more complex and loaded structure. The article proposes a model of an energy-loaded network, because it is a system of interaction of a large number of loads or consumers, active sources, communication lines. The declarative query language for graph databases Cypher was used for implementation. A graph database of an electrical network with a description of analytical data processing using a mathematical algorithm and software specifics of the work of queries in a multi-relational database environment has been built. When a query is executed for a user-specified network segment, a connectivity component is allocated; then for the selected elements of the network graph, correspondence is made with the elements of the network itself.
The study of the electromagnetic activator energy efficiency in the preparation of liquid organic waste for disposal
Authors: Limarenko N V , Krasnova E V , Pudean L A 
Published: February 2021

Abstract
The questions of increasing the energy efficiency of a device that intensifies the process of preparing liquid organic fertilizers for application by means of systemic exposure in the electromagnetic inductor of the activator were considered. The influence of such factors as the parameters of the working fluid, the level of magnetic induction and the duration of exposure to the specific energy intensity of the operation was investigated. A quadratic regression polynomial and the corresponding graphical interpretation in the form of response surfaces were obtained. The obtained results are the initial data for subsequent modeling and optimization of the design of the activator inductor in order to minimize its specific electrical costs, as well as to study the quality of the operational impact in appropriate conditions.
Mathematical models of sunlight for dynamic lighting systems of agricultural objects
Authors: Shabaev E A , Romanovets M M 
Published: February 2021

Abstract
A promising method for illuminating agricultural objects is dynamic lighting with a change in the luminous flux and correlated color temperature of artificial optical radiation sources adapted to the natural dynamics of sunlight. The purpose of this study is to develop mathematical models of changes in illumination on the control surface and correlated color temperature of natural solar radiation during the day. The experimental method established a linear relationship between the correlated color temperature of sunlight and the surface illumination in the direction of the Sun. The regularity of time changes in the height of the Sun above the horizon was determined. The functional dependence of illumination on the height of the Sun above the horizon was revealed. The equations can be used to control artificial light sources in the systems of dynamic illumination of agricultural objects in order to increase the productivity of animals.
Optimum planning of experimental research at the biogas plant
Authors: Lomazov V A , Lomazova V I , Miroshnichenko I V , Petrosov D A , Mironov A L 
Published: February 2021

Abstract
Biogas energy, being one of the important components of ecological agricultural production, on the one hand, allows you to conduct successful disposal of crop and livestock waste, receiving organic fertilizers, and on the other hand makes it possible to provide heating and electricity to greenhouses, farms and other industrial buildings and buildings. At the same time, bioenergy technologies require improvement and development, taking into account the specifics of the agro-industrial complex in which they are used. The problems of organizing scientific research at a biogas station are considered. Based on the analysis of the functioning of the biogas plant, a mathematical formulation of the problem of constructing a schedule for conducting experiments taking into account the costs of equipment retooling is formulated. To determine the coefficients of the objective function of the constructed optimization problem, it is proposed to use expert technologies and a fuzzy inference procedure based on a fuzzy production model of knowledge about the subject area. To construct a solution to the optimization problem, along with the classical methods of discrete linear optimization, it is proposed to use evolutionary genetic algorithms that are effective in solving problems of large dimension.
Biofuel productuin from sunflower husk
Authors: Anisimova O S , Kolomytsa V A 
Published: February 2021

Abstract
At the oil and fat production enterprises, a large amount of sunflower husk is production waste. It is a valuable raw material that allows enterprises to receive additional profit by implementing innovative biofuel production. The objectives of the study are to identify the areas of use of biofuel from sunflower husk and to determine the technological and economic advantages of biofuel production from sunflower husk. The economic efficiency of the production of pellets from sunflower husks is described. There is a growing demand for this type of fuel. Therefore, it is not difficult to find a sales market for this type of fuel. The biofuel production from sunflower husks will allow processing enterprises to receive additional profit, reduce the area for storing sunflower processing waste, improve the environmental situation on the territory of the enterprise and in the surrounding area. Recommendations for the implementation of waste processing technology at the fat and oil industry enterprises are provided.
Use of low-cost equipment for growing commercial sturgeon fish
Authors: Yurin D A , Osepchuk D V , Maksim E A , Kuzminova E V , Yurina N A 
Published: February 2021

Abstract
The paper describes alternative low-cost equipment (in-ground pools) for keeping juvenile sturgeon fish. The results of the study of the hydrochemical regime of the compared fish breeding tanks, growth rates, and fish breeding and biological indicators of the juvenile fish contained in them are described. The object of the research was the juvenile bester (yearlings). As a result of growing fish in the compared containers, it was revealed that when using traditional type and frame pools there was no significant difference between fish breeding indicators. Compared fish breeding tanks provide the necessary hydrochemical regime for the cultivation of physiologically valuable juveniles of sturgeon fish with high growth rates. However, when keeping a yearling of the bester in the developed in-ground pool, there was a certain tendency to increase the intensity of fish growth. The concrete in-ground pool, in comparison with the compared fish breeding tanks, is not only the most reliable, but also close to the natural habitat of the fish (ponds) due to its high noise isolation and low vibration from fish life support system elements. It can be designed in any shape and size, placed anywhere. From a sanitary and environmental point of view, concrete pools are the most preferred option.
Efficiency of cultivation of oil flax varieties in the conditions of the southern Trans-Urals
Authors: Karpov G G , Porsev I N , Karpova M V , Roznina N V , Lapina EN , Poverenova E M 
Published: February 2021

Abstract
Oilseed flax is a valuable multi - use oilseed crop. The Ural region is favorable for growing flax and has great prospects in the development of this direction. Producers of flax products need to know how profitable this crop is, and how the crop can behave when organisms or populations of the same species influence each other; what is the interaction of individuals or populations of different species, etc. To increase production and obtain high-quality flax products, it is necessary to increase the level of flax production culture through the use of science-based cultivation technologies. When creating a new variety, breeders take into account the needs of two categories of consumers - flax producers and flax processors. Some require flax varieties with high productivity (for seeds and fiber) and fiber quality, resistant to diseases and lodging, adapted to the conditions of the TRANS-Urals and Siberia. Others are varieties of flax that meet the numerous requirements of textile, construction, automotive, aviation, medical, and other industries, and are suitable for processing on modern flax processing equipment. In other words, the approach to creating a variety has now changed - it becomes targeted, for a specific order.
Modeling of export development of agricultural enterprises of the Kaluga region
Authors: Voytyuk V A , Marinchenko T E 
Published: February 2021

Abstract
In order to fulfill the set task of achieving GDP growth rates above the world level by 2021, an increase in investment of up to 25% of the country’s GDP is required by 2024. At the same time, domestic demand for products of the agricultural sector is growing insignificantly. Overproduction in some items puts pressure on prices, so the need to develop exports is felt more and more acutely. The development of exports of agricultural products in Russia in recent years is one of the priority areas. The activities of enterprises to increase exports are supported by the state support measures, therefore the amount of products to be supplied for export is constantly growing. The article provides the results of the analysis of the current state of export activity of agricultural enterprises in the Kaluga region. The factors that hinder the development of export potential and the measures necessary to reduce their negative impact are identified. The promising areas for the development of export potential, such as development of cluster-network associations, digitization of processes for the production and sales of goods for export, application and diversification of production, etc., are shown.
Digitalization of agro-landscapes of Altai arid territories
Authors: Kudryavtsev A , Tumbaeva N , Toropova E , Gaan K 
Published: February 2021

Abstract
The assimilation of digital technologies for the effective use of agricultural landscapes is becoming an integral part of the preservation and reproduction of the soil fertility. To form the attributes of geological information systems that allow assessing the agrarian landscapes of Altai arid territories, we suggest using climatic, geomorphological, hydrological and soil attributes as natural ones. We suggest creating anthropogenic attributes on the basis of the farming system elements, which is the final stage in the GIS attributes creation. We propose using not only the farming system, but also its elements, such as the organization of territories, crop rotations, seed production, technologies, chemical plant protection products, mineral nutrition, measures to protect soil from wind and water erosion, chemical reclamation, reconstruction and creation of shelter forest plantations. For landscapes assessment, we propose using data describing the qualitative and quantitative parameters of natural and anthropogenic factors, such as a scale of dynamism, indicators of agricultural soil properties, the degree of dynamism and levels of ecological state “Norm”, “Risk”, “Crisis” and “Disaster”. Such approach to the agricultural landscapes fertility assessment allows us to determine its current state, to establish the degradation processes taking place in each soil, and to highlight the levels of the ecological state. We believe that digitalization based on geographic information systems can reduce the costs of agricultural production and increase the soil productivity.
Development of resource-saving directions in animal breeding on the basis of ecological and economic approaches
Authors: Serdyukova L O , Kolotyrin K P , Slavnetskova L V , Kulikova M V 
Published: February 2021

Abstract
Presently situation in agriculture leads to significant environmental pollution, in particular, in cattle breeding. The storage of manure significantly worsens the sanitary and epidemiological situation. In this connection, the article proposes the use of biogas plants for cattle breeding as an environmentally safe direction for the manure utilization with high economic efficiency. Particular attention is paid to the criterion of investment efficiency after use of a biogas plant, taking into account prevented environmental damage from manure storage. An economic feasibility study of manure utilization schemes is carried out using both a biogas plant and without it, taking into account environmental and economic efficiency.
Introduction of digital technologies in beef breeding of the Republic of Sakha (Yakutia) on the use of smaxtec internal monitoring system for kalmyk bulls autumn fattening
Authors: Sleptsov I I , Martynov A A , Vasiliev Y S 
Published: February 2021

Abstract
The work includes research using the SmaXtec internal monitoring system for Kalmyk bulls fattening in the conditions of Yakutia. The indicators of the rumen pH-value, rumen temperature and animal physical activity were analyzed. The data of bulls health state weekly monitoring via bolus-sensors and natural and climatic factors in the fattening period are presented. We studied the Kalmyk bulls monitoring daily indicators (15–18 months) using the SmaXtec system. Digital technologies were used and remote information sourcing from farm livestock in real time mode was obtained for the first time in the region’s cattle breeding.
Method for Estimating Price of Second hand Ship with Multi Method
Authors: Azhar A 
Published: February 2021

Abstract
Demand fleet as a means of marine transport could be met by building new ships and buying second-hand vessels. The current constraints in building a new ship are the cost relatively expensive and take a long time, while the profit for the procurement of second hand ships time relative faster and cheaper price. This study aimed to identify the price of second hand vessels and to develop a cost estimation model second hand vessels. Collecting data with survey vessel prices do with field surveys and market surveys via the internet on websites selling used shipbroker. Data survey include the price, type of vessel, the main dimension, tonnage, machines, materials and speed. Multi-methods data processing and analysis consisting of market price approach, comparative vessel and physical pricing approach. Estimated price or appraisal vessel obtained from the average value of the three methods.
Study application of the domestic freight logistics system in Indonesia
Authors: Nugroho S , Larasati W A 
Published: February 2021

Abstract
With the geographic conditions of Indonesia, the availability and need for commodities in each province are different, the fluctuations and disparities in the prices of basic goods between regions are quite high, are driving factors for inter-island trade. inter-island trade has an important role in the economic sectors of society. The geographic condition of Indonesia with 62.89% sea area, means that the modes of transportation that can be selected in inter-island trade are sea transportation and air transportation. The choice of transportation mode is closely related to the 9R of logistics principles, namely: Right Way, Right Product, Right Quantity, Right Quality, Right Place, Right Time, Right Customer, Right Cost. The development of the digital era that has penetrated all aspects of human life has also influenced the patterns of world trade which have begun to change since the presence of e-commerce. This study will try to potray how the current inter-island trade logistics system in Indonesia is conduct and how electronic commerce (e-commerce) affect the logistics business. This research aim to provide the right input for business actors in choosing the mode of inter-island trade transportation.
Numerical Prediction Of Foils Configuration In A Design of Buoy Glider System For Supporting Tsunami Early Warning
Authors: Arifin  , Wibowo H N , Buddin H , Bambang W 
Published: February 2021

Abstract
Geographically, Indonesia is a disaster-prone country, with the potential to cause damage to public infrastructure not only cause enormous loss of life. Based on the tsunami risk map released by BNPB in 2018, it needs more attention so that mitigation can be implemented properly. It necessary to revitalize nationally developed by BPPT the buoy-based early warning system for tsunami disasters. Early generation tsunami buoy designs were successfully developed and operated in several waters in Indonesia. In order to improve the performance of the tsunami buoy, a new vehicle system known as the Wave Buoy Glider (WBG) is proposed. It is hoped that this WBG design can cover a wider monitoring area as well as more wave elevation measurement data related to tsunami events. In this research some of the buoy glider-design parameters such as sizes and configurations of foil are studied in order to obtain the optimal pulling force of the wave glider to the surface floater. A numerical calculation using the CFD technique is used to determine the hydrodynamic force. So that from this study, it can be seen that an increasing number used foils, the drag and lift forces also tend to increase. The larger the span foil, the greater the value of the drag and lift forces, especially at the larger AoA angle. The positive values of drag forces at any lift forces confirm that wave glider always move forward with every vertical movement of the floater.
Design of Ship Repair Yard Ranking Website Based on Customer Reviews
Authors: Arif M S , Pribadi S R W , Mahendra A 
Published: February 2021

Abstract
Many ship owners currently choose ship repair yards based on conventional ways; there is no specific platform that can provide information objectively ranking the ship repair yards that can be accessed in public. On the other hand, technological developments have shifted in community business activities from an offline way to the online method. The initial process of designing the application is by determining and weighing the criteria for assessing ship repair shipyards using the AHP method and then obtained nine criteria with weights for each standard. After getting the requirements and value, then we make a website-based application design. This application will display shipyard ranking according to the ratings and reviews provided by customers. The calculation of each shipyard’s rating and scale will be determined based on the per-criteria value, which is then accumulated based on the weight of each predetermined criterion. After testing the application in a questionnaire on several respondents from shipping companies, this application gets a value of 28.5 out of 30, or 94.9%, which means this application necessary to be applied in the ranking of ship repair yard.
Technical Review of Bollard Pull Calculation to Support Shuttle Tanker from Spread Mooring System FSO
Authors: Ariana I M , Prastyasari F I , Putera R R 
Published: February 2021

Abstract
An FSO was designed with Spread Mooring System to substitute the former FSO whose mooring system was designed with Turret Mooring System. Theoretically, the environmental loads affecting the shuttle tanker when the crude oil transfer process from FSO is undergone, it will have a bigger number and require a bigger bollard pull specification of the AHTS vessels to assist the shuttle tanker in place. It is due to the weathervane flexibility that is adjusted to the heading direction of either the FSO or shuttle tanker which found in Turret Mooring System is absent in Spread Mooring System. The calculation of environmental loads in this research is conducted using recommendation from DNV-GL and wind, wave, current, and inertia loads are taken into accounts. The biggest transversal environmental load is recorded by the magnitude of 262.96 MT towards positive vector. Whilst the biggest longitudinal environmental load is recorded by the magnitude of 105.44 MT towards negative vectors. By considering safety factor, age, efficiency, and towing configuration of the AHTS vessels, the recommended specification of the AHTS vessels configuration are the 200 MT AHTS vessel in stern of the shuttle tanker and 220 MT AHTS vessel in port side or starboard side of the shuttle tanker.
Maneuverability study and economic analysis for tugboat procurement in basin area
Authors: Ariana I Made , Dinariyana D. P. A. A. B. , Tyasayumranani Widiastuti , Pratiwi Emmy 
Published: February 2021

Abstract
The growth of the energy industry in Indonesia is increasing rapidly. This study concern about the crude and product oil distribution of one of the biggest oil companies in Indonesia. The distribution of crude and product oil requires large capacity particularly designed bunker transportation, which is an oil tanker. However, the enormous size of the tanker causes the tanker must be assisted by a tugboat to berth at the port of any type of waters. In this study, the simulations were conducted at the Marine Region (MR) III of Tanjung Priok Port, which has a basin-shaped berthing area, to determine the needs of tugboats force based on the size of the tankers. The simulations were carried out in MATLAB software by considering Tankers’ principal dimension, environmental data, Tugboat force (Bollard Pull; BP), and Tugboat’s heading angle. Then, those forces should be combined with each other into several scenarios and reviewed its economics based on the “buy”, “lease”, and “combination” scenario, calculated in the Capital Expenditure and Operational Expenditure factors.