bluuebunny/crossref_metadata_2025_split huggingface dataset:
Frame interpolation in video stream using optical flow methods
Authors: Lyasheva S , Rakhmankulov R , Shleymovich M 
Published: April 2020

Abstract
The article deals with the issues of interpolation and extrapolation of video stream frames in real time. Results of research of the method of generation of intermediate frames of a video stream are given. The method is based on the optical flow calculate. The results of comparison of implementations of the method using the Farneback, Brox and Duality based TV-L1 approaches for the calculation of optical flow and CUDA technology are presented. It is shown that the Farneback method best result is gives. The Duality based TV-L1 method shows a smooth and high-quality optical flow, but gives a very slow calculation speed. The Brox method is not suitable at all, since it shows the worst result both in terms of calculation speed and optical flow quality. The results of comparison of implementations based on CUDA and OpenCL technologies are also presented. OpenCL implementations are almost two times slower than CUDA implementation. This leads to the inability to generate frames in 60 FPS in real time even for low resolution images. However, CUDA can work only on NVidia GPU accelerators. In conclusion, the ways of further research on this topic based on the use of deep neural networks are presented.
Network of agricultural probes for development of Russian digital farming
Authors: Yuzhakov M S , Badin A V , Filchenko D I , Pidotova D A 
Published: April 2020

Abstract
A model of a wireless network for collecting and transmitting agroclimatic parameters is presented in the paper. The method of data collection, the technology of their transmission is described. Organization diagram of agroclimatic probes network is given. The block diagram, composition and parameters of agroclimatic probes and the results of testing agroclimatic probes in the village of Mazalovo (Tomsk Region, Russia) are given in the article.
Investigation of the possibility to use GaAs Hall-effect sensors in active magnetic positioning systems
Authors: Avdochenko B I , Karlova G F , Belozyorova E A 
Published: April 2020

Abstract
The paper focuses on the investigation of the possibility to use GaAs Hall-effect sensors (detectors) in active magnetic positioning systems. On the basis of the avalanche S-diode a pulsed magnetic field generator with the pulse front width of 0.3 ns and the current of 10–300 A has been developed. The work studies Hall-effect sensor transient fenomena which transient time is equal to 0.4 ns. The Hall-effect sensor noise in ultra-wide frequency band is estimated. The investigation shows that it is possible to use Hall-effect sensors in active magnetic positioning systems with the operational range of up to 1 m and a few-centimeter spatial resolution.
Formation of an algorithm for determining the criteria for the occurrence of critical events in gas condensate wells
Authors: Zarikovskaya N , Piskarev A , Kalyuzhny E , Shpakovsky G 
Published: April 2020

Abstract
This work is devoted to the construction of an algorithm to identify criteria for the occurrence of critical events for gas condensate wells. In the course of the work, a sufficient amount of data obtained from telemetric sensors with a time interval of two years was analyzed. Among the data presented, critical events were recorded that formed the basis for the formation of the algorithm and criteria for identifying critical events. The data on parameter changes during hydrate formation, self-injection of the formation with water, and unstable well operation are presented. As a result of the work, criteria were identified on the basis of which general rules (algorithm) were formulated to identify critical events.
The content of chlorophyll, stomatal density and cuticle thickness of binahong (Anredera cordifolia (Ten.) steenis) accessions from Medan
Authors: Hasanah Y , Mawarni L 
Published: April 2020

Abstract
The chlorophyll content and stomatal density in a plant vary greatly determined by plant genetic factors and plant growth environment. The research was aimed for evaluating and determining the chlorophyll content and stomata density of Medan’s local binahong accessions which are lowlands. The research was conducted by survey method, by taking samples of local Medan binahong leaves, then analysed in a laboratory. Based on survey results, 8 accessions of Medan local binahongs have been obtained. The result of the research indicated that the accession of Medan 2 has the highest total chlorophyll content and stomatal density compared to other accessions. The highest of cuticle thickness was found in Medan 7 accession, while the lowest was in Medan 4 accession.
Effect of the ridge size on the growth and production of several sweet potato clones (Ipomoea batatas L.)
Authors: Tiffani S , Rahmawati N , Setiado H 
Published: April 2020

Abstract
The ridge size can increase the growth and production on several sweet potato clones. This research aim was to determine the effect of bed size (0, 15 and 30 cm) on the growth and production of several sweet potato (Ipomoea batatas L.) clones (Sari Varieties, Cengkeh Turi Accessions, Tanah Seribu Accessions). This research was conducted at Jalan Eka Warni, Gedung Johor Subdistrict, Medan Johor District, Medan from March-July 2019. The results of this research indicated that the growth and morphological production of several sweet potato clones had a significant effect on the parameters of fresh shoot weight per sample, number of tubers per sample and tuber weight per sample and no significant effect on the parameters of stem length and harvest index. Likewise, the ridge size had no significant effect on stem length, fresh shoot weight per sample, number of tubers per sample, tuber weight per sample and harvest index. Tanah Seribu Accession was the best clones when compared to Sari Variety and Cengkeh Turi Accession and 15 cm was the best ridge size.
The effect of the rice white tip nematode, Aphelenchoides besseyi Christie, on the yield components of rice cultivars in a glasshouse condition
Authors: Lubis N , Lisnawita  , Safni I 
Published: April 2020

Abstract
White rice tip nematodes, Aphelenchoides besseyi, causes gradual yield loss worldwide including in Indonesia. There are no reports regarding yield losses due to this nematode in North Sumatra. This research was conducted to verify the influence of white tip nematodes on the yield of rice cultivar in greenhouse conditions. The experiment was carried out in a Randomized Complete Block Design (RCBD) with 2 factors and four replications. The first factor is rice cultivar (Ciherang, Sintanutr, Pepe, and IPB 3S), and the second factor is the condition of the seeds (naturally infected, uninfected seeds). The results showed that plants with naturally infected seeds decreased the number of tillers and weighed 100 seeds. The number of non-infected puppies is greater than naturally infected seed, but not significantly different at the 5% level.
Characteristics of root growth and soybean yield on drought stress
Authors: Hanum C , Meiriani  
Published: April 2020

Abstract
Drought stress is a major limiting factor for soybean cultivated on dry land. Water limitation in the root zone will inhibit the growth, development and yield of soybeans. This research aimed to study the characteristics of root growth and its effect on soybean yield on drought stress. The study used a pot method with two levels of treatment, 80% field capacity (FC) and 20% FC. Tested indicator plants were soybean consisting of two types, namely Nanti and Cikurai. The results showed that the Nanti Variety at 20% FC groundwater content experienced a percentage decrease in root dry weight, root volume, root length, shoot dry weight, and dry seed yield with the values of 58.33; 73.2; 24.85; 69.63 and 73.00%, respectively. Cikuray varieties experienced a decrease in root dry weight (55.17%), root volume (43.8%), root length (47.13%), shoot dry weight (71.05%), and dry seed yield (62.78%), respectively.
Potential of upland rice yield based on tillers and leaf area on various organic matter as the observation variables
Authors: Lubis F Z , Rahmawati N , Hanum C 
Published: April 2020

Abstract
The potential of upland rice production can be described through the parameters of the number of tillers and flag leaf area. This is supported on the optimal number of tillers forming the basis for grain formation, while the flag leaf area is an illustration of the potential assimilation that plants can produce. Provision of organic material in dry land is an alternative to increase the availability of ground water. The aim of this research was to study the relationship between variables, those were number of tillers, flag leaf area and grain production. The experimental method used was a Randomized Block Design (RBD) with 2 factors. Upland rice varieties were be the first factor, namely IPB 9G, IPB 8G, Sigambiri Merah, and Situ Patenggang. The second factor was organic materials: solid decanter, filter mud, oil palm empty fruit bunches, oil palm fibre, and cow manure. The results showed that upland rice had a greater number of tillers and wider leaves would produce higher production per plot. The provision of solid decanter could increase the number of tillers (51.56%), flag leaf area (35%), grain production per plot (55.12%) compared to the treatments without the provision of organic matter.
Assessment of Sustainable Development on Territories under the Impact of Different Genesis Disasters
Authors: Knaub R V , Ignateva A V 
Published: April 2020

Abstract
At present, neither international nor Russian literature sources propose any index to assess safety level of disasters that occur everywhere throughout the world. No one doubts the fact that the number of natural, man-made and social disasters, as well as resulting economic losses have increased several times over the past thirty years. In response to this trend, the study aims to develop a disaster safety level index (DSLI). The study presents methodological tools for calculating the Disaster Safety Level Index (DSLI) and calculation of the global DSLI for the 1998–2011 period. The proposed method for calculating the Disaster Safety Level Index has three advantages. Firstly, it is relatively simple. Secondly, everyone can get access to input data for calculations. Thirdly, different indicators used in the index are reduced to units of power, added together and expressed as a single number, which is very important in case of incomparable (heterogeneous) indicators. The proposed Disaster Safety Level Index (DSLI) can be used in practice to prevent disasters of various origins.
Estimation of the Variability of Average Annual Values of Nutrients Concentrations in the Water of the Kuibyshev Reservoir
Authors: Minakova E A , Shlichkov A P , Biktemirova E I 
Published: April 2020

Abstract
The results of the analysis of water pollution in the Kuibyshev reservoir with nutrients for the period 2009-2015 yrs are given. The assessment of the dynamics of average annual concentrations of biogenic substances and comparison with fisheries standards was carried out. The trends of average annual concentrations of biogenic substances in the water of the Kuibyshev reservoir are obtained, describing the general trend of the dynamics of biogenic substances for the studied period of time. The analysis of the changes in the chemical composition of the nutrient elements of the waters of the Kuibyshev reservoir in retrospective years from 1957 - 2015 yrs was carried out. In the modern period of 2009-2015 yrs marked a significant increase compared with 1952-1954 yrs the concentrations of the main biogenic substances - phosphate ions - 6,3 times, nitrite ions - 35,0 times, nitrate ions - 15,6 times, and ammonium ions 23,0 times.
Simulation of Liquid Fuel Spills Combustion Dynamics Based on Computational Fluid Dynamics Using Modern Application Programs
Authors: Afanasev P M 
Published: April 2020

Abstract
The article presents the results of calculations using modern application programs, using the CFD FDS 6.3 model, self-sustaining burning of liquid hydrocarbon fuel spills with a sufficiently high accuracy for spills less than 0.5m in diameter. The study shows that the use of modern software systems for CFD modeling, taking into account wind direction, humidity and other environmental parameters, significantly reduces the costs of risk assessment in emergency situations associated with the use of LNG in transport. Conducted research allows to increase reliability and reduce risks of liquefied natural gas usage in transport
Active Volcanoes and Thermal Springs of Kunashir Island (Russia)
Authors: Zharkov R V 
Published: April 2020

Abstract
Since 2002, complex studies of all known thermal springs of Kunashir Island have been carried out. Of the four active volcanoes in the island, three volcanoes have stable hydrothermal systems. In addition to volcanoes, thermal springs in Kunashir are found on the coast and they are associated with tectonic faults. Despite the different morphogenetic types of volcanoes and their activity, the common patterns of zoning of hydrochemical types of thermal waters are typical for volcano-hydrothermal systems. On the periphery of the extrusive domes of the volcanoes, there are solfataric fields with outputs of gases and acid sulfate hydrotherms with temperatures up to 95 °C. Below the slope at a distance from the extrusive domes and solfataric fields an acid chloride-sulfate (sulfate-chloride) sodium hydrotherms with temperatures up to 91 °C are located. At the foot of volcanic edifices, at a considerable distance from the extrusions and outputs of solfataric gases, neutral chloride sodium thermal springs and steams are located. The isotopic composition of oxygen and hydrogen of different hydrochemical types of thermal waters is similar to the isotopic composition of local meteoric waters, which confirms the genesis of hydrotherms due to atmospheric waters with minimal participation of sea and "mantle" waters.
Ensuring the Environmental Safety of Coal-fired Power Plants for the Flue Gases Purification
Authors: Samarskaya N , Lysova E , Paramonova O , Yudina N 
Published: April 2020

Abstract
The article is devoted to solving of the pressing issue–provision of ecological safety of urban areas in flue gas purification of coal power plants and boiler houses. Use of the method for evaluating and selecting the maximum ecological efficiency and energy intensity value of purification of exhaust gases of thermal power plants and boiler houses of municipal services within the known physical and energetic approach allowed to obtain the parametric dependence of ecological efficiency and energy intensity value and determine the optimum parameters of hydrodynamic cleaning process with further designing of a new technical solution.
On the basis of the simulation process and cleaning systems a new device of hydrodynamical (wet) cleaning the flue gases via control parameters significantly affecting the ecological efficiency and energy intensity value of the cleaning process was worked out. Moreover, control of parameters is carried out at the design of flue gases cleaning system, which allows to significantly optimize the choice of ways and means of reducing air pollution in urban territories. The obtained simulation results can be used to develop new or improve existing devices of hydrodynamic flue gases purification.
Production and Environmental Monitoring at PAO Surgutneftegaz
Authors: Parshukova L A 
Published: April 2020

Abstract
This paper analyzes the performance of systems for removal of sludge from the drilling mud. It shows that the solid-phase particle-size distribution, which depends on the mineral composition and the physico-mechanical properties of rock, the drilling mud process parameters and the type of the rock cutter, as well as the drilling parameters affect the performance of vibrating screens, hydrocyclones, and centrifuges. The paper proposes upgrading the cleaning system by installing a second layer of fine-meshed sieve cassettes where hydrocyclones discharge their output. This improvement reduces the unproductive drilling time.
Estimating Thermal Effect of a Group of Gas Wells on Permafrost Rock
Authors: Ivanov V A , Rozhin I I 
Published: April 2020

Abstract
The article is devoted to a computational experiment on forecasting the thermal interaction of a group of gas wells and permafrost. In connection with the spread of cluster drilling, it becomes necessary to study the thermal effect of a cluster of wells on frozen soils in the specific conditions of Central Yakutia. As input data for the numerical survey, field data on thermal logging, production rates, physicochemical properties of gas, rock properties and parameters of the developed deposits were used. Quantitative results were obtained on the extent and pattern of thawing of frozen rocks in the vicinity of the group of wells, and on well operation modes. The results of the work can be used in planning the development of gas fields in the considered area.
Method of Early Prediction of the Moment of Earthquake According to the Noise of Seismic Stations
Authors: Yepaneshnikov V D , Yepaneshnikova I V 
Published: April 2020

Abstract
The proposed study is interdisciplinary and is based on the use of methods of technical diagnostics in relation to non-man-made objects. Previously developed method of indirect assessment of the degree of the stress state of rocks according to seismic data allowed us to offer two earthquake’s short-term precursors that have been applied for the purposes of the operative forecast. For this purpose, the wave forms of noise measured by seismic stations before the earthquake during and after the anomalous values of the precursors were used. Post-monitoring of preparation of five earthquakes is carried out.
Geological Environment Role in the Formation of Hydrogeoecological Conditions within Large Industrial Zones
Authors: Musin R Kh , Korolev E A , Zotina K E 
Published: April 2020

Abstract
Natural and man-made conditions of the Nizhnekamskaya industrial zone are discussed in the article. This zone includes large petrochemical and oil refineries, PJSC «Nizhnekamskneftekhim» is one of the largest companies in Europe. The article shows that significant changes in the composition of natural waters are manifested within the territory of a large operating surface landfill for industrial waste and in its vicinity. Here, the salinity of underground water can reach 12 g/l, and the concentration of petroleum products and phenols, which are characteristic pollutants, reaches 982 and 14 mg/l. Within the industrial site, underground water salinity reaches 1.25 g/l, their hardness is 18 mmol/l, and permanganate index is 17.3 mgO/l. The intensity of pollution of natural waters decreases with increasing distance from the boundaries of industrial zones. There are no signs of pollution of natural waters at a distance of 1.0-1.5 km from the landfill. The composition of natural waters has not changed over the past 40 years outside the industrial zone. Here, HCO3/Ca and HCO3/Mg-Ca are developed; waters with mineralization up to 0.5-0.6 g/l and total hardness up to 7 mmol/l are favorable for drinking. Natural water pollution is local, since the geological environment has high buffer properties. The nature of the geological section, consisting mainly of clay rocks, the favorable quality of precipitation at their rate of 550 mm / year determine these properties. The predominant type of pollutants, represented mainly by organic substances (petroleum products, phenols, etc.), which are subjected to chemical and biological degradation, also determine these properties. In addition, vertical hydrogeochemical zonality plays an important role. It changes with an increase in the depth of the HCO3/Ca waters of the waters of HCO3/Na composition. At the same time, the salinity of underground water is in the range of 430-600 mg/l, and the hardness decreases from 6.4-7.3 to 0.5-2.3 mmol/l. This determines the possibility of obtaining potable quality water in any part of the industrial zone, where the optimal depths of wells’ filters are 140-160 m.
Estimate Tank Quality Margin
Authors: Gaysin E Sh , Frolov Y A , Nasibullina O A 
Published: April 2020

Abstract
The article addresses the issues of ensuring the reliability of tanks taking into account their life cycle by assessing and maintaining an appropriate level of quality. The work proposes: a structure that allows to assess the quality of such a complex technical system as a tank; Methodology, algorithm and formulas for evaluation of integral quality index.
Development of Engineering and Analytical Models of Pulsed Electromagnetic Field and Magnetic Fluxes of Horizontally Inhomogeneous Flat Geological Structure
Authors: Nim Y A , Gogoleva L P , Illarionova M G 
Published: April 2020

Abstract
The development of multicomponent engineering and analytical model of magnetic flux of a pulsed electromagnetic field of horizontally inhomogeneous electrically conductive structure using the dynamic method of images, solutions of the Laplace and Helmholtz equations, the Fourier spectral method, numerical experiment, and modelling is considered. The most simple but distinctive electrically conductive geological structure in the form of known inclined plane — the contact model of two media, ore-controlling tectonic zones, the boundaries of oil and gas deposits and other stratiform objects, was adopted as horizontal heterogeneity. Since rigorous methods for solving problems of electrodynamics on horizontally heterogeneous bodies are quite complicated and time-consuming, the technology of pulsed electrical exploration in the study of such structures is mainly based on the results of physical modelling and technologies of “related” methods based on measurements of low-frequency harmonic fields. The design and modelling of an engineering and analytical model of pulsed electromagnetic field of horizontally heterogeneous structure are shown. In order to increase the depth of the study and more efficiently assess the horizontal heterogeneity of the section, analytical models of multicomponent fields of the flux of magnetic induction of an inclined conductive structure are presented.
The Urban Environment: the Revival of Russian Harbin
Authors: Kozyrenko N E , Lava D A 
Published: April 2020

Abstract
The research is devoted to the study of the current state of historical buildings in Harbin. This article is about the Pristan area, which was the main functional area of the city in commercial terms. Access to the river Sungari was the main factor. He defined the historical specialization of Pristan - commercial and industrial. A brief overview of the steps involved in the formation of the historical planning of the Pristan area in Harbin is provided in this article. Its features are revealed and the concept of restoration of the historic environment is described.