bluuebunny/crossref_metadata_2025 huggingface dataset:
Detection of Articulatory Deficits in Parkinson's Disease: Can Systematic Manipulations of Phonetic Complexity Help?
Authors: Kuruvilla-Dugdale Mili , Salazar Mary , Zhang Anqing , Mefferd Antje S.
Published: June 2020

Purpose

This study sought to determine the feasibility of using phonetic complexity manipulations as a way to systematically assess articulatory deficits in talkers with progressive dysarthria due to Parkinson's disease (PD).

Method

Articulatory kinematics were recorded using three-dimensional electromagnetic articulography from 15 talkers with PD (58–84 years old) and 15 healthy controls (55–80 years old) while they produced target words embedded in a carrier phrase. Majority of the talkers with PD exhibited a relatively mild dysarthria. For stimuli selection, phonetic complexity was calculated for a variety of words using the framework proposed by
Kent (1992)
, and six words representative of low, medium, and high phonetic complexity were selected as targets. Jaw, posterior tongue, and anterior tongue kinematic measures that were used to test for phonetic complexity effects included movement speed, cumulative path distance, movement range, movement duration, and spatiotemporal variability.

Results

Significantly smaller movements and slower movement speeds were evident in talkers with PD, predominantly for words with high phonetic complexity. The effect sizes of between-groups differences were larger for several jaw kinematic measures than those of the tongue.

Discussion and Conclusion

Findings suggest that systematic manipulations of phonetic complexity can support the detection of articulatory deficits in talkers with PD. Phonetic complexity should therefore be leveraged for the assessment of articulatory performance in talkers with progressive dysarthria. Future work will be directed toward linking speech kinematic and auditory–perceptual measures to determine the clinical significance of the current findings.
Lensed quasar search via time variability with the HSC transient survey
Authors: Chao Dani C.-Y. , Chan James H.-H. , Suyu Sherry H. , Yasuda Naoki , More Anupreeta , Oguri Masamune , Morokuma Tomoki , Jaelani Anton T.
Published: June 2020

Gravitationally lensed quasars are useful for studying astrophysics and cosmology, and enlarging the sample size of lensed quasars is important for multiple studies. In this work, we develop a lens search algorithm for four-image (quad) lensed quasars based on their time variability. In the development of the lens search algorithm, we constructed a pipeline simulating multi-epoch images of lensed quasars in cadenced surveys, accounting for quasar variabilities, quasar hosts, lens galaxies, and the point spread function variation. Applying the simulation pipeline to the Hyper Suprime-Cam (HSC) transient survey, an ongoing cadenced survey, we generated HSC-like difference images of the mock lensed quasars from the lens catalog of Oguri & Marshall (2010, MNRAS, 405, 2579). With the difference images of the mock lensed quasars and the variable objects from the HSC transient survey, we developed a lens search algorithm that picks out variable objects as lensed quasar candidates based on their spatial extent in the difference images. We tested the performance of our lens search algorithm on a sample combining the mock lensed quasars and variable objects from the HSC transient survey. Using difference images from multiple epochs, our lens search algorithm achieves a high true-positive rate (TPR) of 90.1% and a low false-positive rate (FPR) of 2.3% for the bright quads (the third brightest image brightnessm3rd <  22.0 mag) with wide separation (the largest separation among the multiple image pairsθLP >  1.5″). With a preselection of the number of blobs in the difference image, we obtain a TPR of 97.6% and a FPR of 2.6% for the bright quads with wide separation. Even when difference images are only available in one single epoch, our lens search algorithm can still detect the bright quads with wide separation at high TPR of 97.6% and low FPR of 2.4% in the optimal seeing scenario, and at TPR of ∼94% and FPR of ∼5% in typical scenarios. Therefore, our lens search algorithm is promising and is applicable to ongoing and upcoming cadenced surveys, particularly the HSC transient survey and the Rubin Observatory Legacy Survey of Space and Time, for finding new lensed quasar systems.
Research of rice crops in Krasnodar region by remote sensing data
Authors: Garkusha Sergey , Skazhennik Mikhail , Kiselev Evgeny , Chizhikov Vitaliy , Petrushin Alexey
Published: June 2020

The concept of digitalization of agricultural production in the Russian Federation provides for the implementation of measures to develop and create a system of geographic information monitoring and decision support in crop production. The aim of the research was to conduct geoinformation monitoring of rice crops to develop methods for automated mapping of their condition and yield forecasting. The studies were carried out on a test site of the Federal State Budgetary Scientific Institution “Federal Scientific Rice Centre” with an area of 274 hectares. The survey was performed by a quadcopter with a MicaSense RedEdge-M multispectral camera mounted on a fixed suspension. The shooting period using an unmanned aerial vehicle (UAV) was limited to early June and additionally used the Sentinel-2A satellite. To assess the state of rice crops, the normalized relative vegetative index NDVI was used. Based on the NDVI distribution and yield information from the combine TUCANO 580 (CLAAS), a statistical analysis was carried out in fields 7 and 9. Testing of the experimental methodology for monitoring crops in 2019 on the basis of remote sensing of test plots and geoinformation modeling and the statistical apparatus should be considered satisfactory.
The study of the suitability for use in agriculture of sludge and hydrochemical indicators of water in the reservoirs of the fish farm LLC “Albashi”
Authors: Yurina Natalya , Yurin Denis , Astakhova Irina , Shcherbatova Tatyana , Shcherbatov Igor
Published: June 2020

The study of suitability for the use in agriculture of sludge deposits and hydrochemical indices of water bodies of fish-growing enterprise of LLC “Albashi” were carried out. It is an enterprise engaged in breeding and growing pond fish and sturgeon in pools and gardens, crayfish, growing aquapon greens. Fresh water bodies of reservoir type LLC “Albashi” contain a large number of bottom deposits. The layer of sludge deposits on the bottom in places reaches the power of 2-5 meters, and the underground power is difficult. Bottom sediments were taken from a depth of 1.0-1.2 m from the surface. The hydrochemical regime of the studied water bodies fully corresponds to the cultivation of aquaculture objects and hydroponic plants. Sufficient suspended matter in water (8.2 mg/dm3). The complete absence of dichlorodiphenyl trichloroethane, its metabolites and pesticides characterizes the products produced as environmentally safe. Consequently, bottom sediment site under study can be considered suitable for agricultural production.
Legal and piscicultural-technological decisions for fish-farming use of natural water bodies
Authors: Golovina Nina , Kupinski Sergey , Danilova Elena , Golovin Pavel
Published: June 2020

For fishery assessment of up-to-date state of three water storage reservoirs in the northern part of the Moscow area, classical methods of hydrobiological and ichthyological investigations were used, as well as echolocation and fish-farming plane-tables for calculation of growth possibilities of fish communities representatives. The low depths (average between 2 and 2.5 m) of the Yakhromskoe and Velevskoe water storage reservoirs create favorable conditions for intensive development of aquatic plants, they show greater similarities of ichthyofauna but the low growth rate, of the bream (Abramis brama) as the main object at the amateurish fishing. The Zhestylevskoe water storage reservoir, having the greatest area and depth (average 6 m depth) and the weed filling less than 5%, shows the bream growth rate higher than that one of the 2 other water bodies. The normative-legal rules of the Russian Federation permit to register officially fish cultural and fishing areas at water storage reservoirs of more than 100 hectare what allows to determine ways of their subsequent stable exploitation. On the example of the Yakhromskoe, Zhestylevskoe and Velevskoe water storage reservoirs , algorithms of reservoirs transference from one state into another one have been given with a view to use them intensively.
Effect of fish feed concentrate on egg production of laying hens
Authors: Tsoy Zoya , Adushinov Dmitry
Published: June 2020

The article contains materials of scientific research on the using of fish feed concentrates in the feeding of laying hens. It has been proved experimentally that this feed concentrate has a positive effect on the egg production of laying hens of the cross Haysex White. Thus, when this supplement was included in the diet of laying hens, the following results were obtained: egg production in the experimental groups increased and were higher on 13.3; 15.7 and 18.3%, the amount of egg mass-on 15.9; 18.3 and 34.6% higher than in control group.
New data on wild grey mullet (mugil cephalus linnaeus, 1758) myxosporean (myxobolus episquamalis egusa et al., 1990) in the black sea
Authors: Kazarnikova Anna , Strigakova Tatyana , Bortnikov Evgeny , Byadgi Ovkar , Galeotti Marco , Beraldo Paola , Ermakov Alexey , Derezina Tatyana , Poynton Sarah
Published: June 2020

Flathead grey mullet, Mugil cephalus, with mass whitish cystlike plasmodia on their scales were collected at Kerchensky preglass of the Black Sea in 2015. The prevalence of infected fish varied from 15% in spring, reached 100% in summer, and declined to 2.5% in autumn. No fish mortality was detected. The spores were oval in frontal view, tapering to a blunt apex. Two unequal polar capsules were pyriform and extended over the anterior half of spore. Spores were 8.2±0.03 µm (7.9-8.4) long, 5.9±0.23 µm (5.2-7.3) wide, and 4.4±0.17 µm (4.0-4.7) thick. Two pyriform and unequal polar capsules were observed (4.0±0.07 µm (3.3-4.5) long, and 1.5±0.24 µm (1.1-1.8) wide). The investigation of nucleotide sequences of the 18S rDNA gene of the myxosporean spores from scales with universal primer А (5′-ACCTGGTTGATCCTGCCAGT-3′) and В (5′-TGATCCTTCTGCAGGTTCACCTAC-3′) showed 100% identity with episquamalis, and 99 % with M. bizerti, M. ichkeulensis, M. spinacurvata and Myxobolus sp. previously detected in mullets. The results obtained from the present study reveal that M. episquamalis, found on the scales of M. cephalus from Kerchensky preglass of the Black Sea, is new record for Russian waters.
Biophysical qualities of the hoof horn and its influence on cows productive longevity
Authors: Karamaev Sergey , Cumshewa Nina , Valitov Khaidar , Karamaeva Anna
Published: June 2020

The main research objective was to study the influence of the hoof shape, hardness and elasticity of the hoofed horn on the cows’ productive use period duration in modern dairy complexes. The research object was black-motley cows, rejected due to limb disease. The shape of the hoof is divided into normal, with angle of 45-55о, sharp – less than 45о and obtuse – more than 55о. In the group of retired cows with the correct shape, there was 76% of animals. Studies have shown that 55.2% of cows had a hoof hardness 80-85 ShA, but the longest period of life was in animals with a score of 91 or more ShA, and the maximum lifetime milk yield with an indicator 86-90 ShA. Most of (61,6%) retired cows had an indicator of hoof horn elasticity 3,1-3,5×1010 Pa. Moreover, the highest rates of productive longevity were observed in cows with hoof horn elasticity 2,6-3,0×1010 Pa. Therefore, for further use, it is desirable to select animals having front wall inclination angle of the hoof 50-550, with hardness hoofed horn 86-90 ShA, and elasticity 2,6-3,0×1010 Pa.
Influence of feed additive from secondary raw materials of starch-treacle production on sheep-producers productivity
Authors: Kulintsev Valery , Abilov Batyrchan , Marynich Aleksandr , Khalimbekov Zubiru , Serdyukov Igor
Published: June 2020

Introduction to the diets of sheep-producers of wool (Jalgin merino) and meat-wool directions (Russian meat merino) productivity in the non-breeding and breeding period of the feed additive «corn Gluten» in the amount of 28 and 56 and 28 and 66 g per unit per day contributes to an increase in crude and digestible protein by 5,0 and 10,0 %, lysine by 1,52 and 3,0 %, methionine with cystine – by 5,2 and 12,7 %. In addition, the digestibility of dry matter of the diet (in the non-breeding period) is significantly increased by 3,85-6,74%, by 13,4-15,11% – raw protein, by 3,19-5,03% – raw fat, by 5,92-7,21% – raw fiber, as well as nitrogen-free extractive fraction – by 1,90-3,52%. Feed additive «corn Gluten» promotes a significant increase in the volume of ejaculate in breeding period by 2,45,7% and 2,8-7,0%, sperm activity and an indicator of resistance to 0,3-0,6 and 0,5-0,6 points and 450-800 units, sperm concentration – by 1,7-3,0 and 1,7-3,5 %, ewes’ fertility – by 3,0-5,0 and 2,0-3,0 %. The additional income from the sale of sperm products with an increase in the protein level in the diets of sheep-producers Jalgin merino and Russian meat merino by 5% is 3,63-4,32, and by 10 % – 8,20-10,26 thousand rubles.
Approaches to probiotics properties testing using Caco-2 cells
Authors: Chmykhalo Viktor , Zolotukhin Peter , Pakhomov Viktor , Prutskov Aleksey , Khairullina Sabina , Zubtsov Vladislav , Egyan Marina
Published: June 2020

Adequate biological models are a prerequisite to screening and development of probiotic drugs. In the present study, Caco-2 cell line is reviewed as a model for analyzing properties of probiotics. This cell culture possesses all the characteristics necessary for evaluating the effects of probiotic drugs on a wide range of both intracellular processes and intercellular interactions. Informativeness of Caco-2 cells is in the focus of the present review.
The work of the cutting beater in the transition zone threshing and separating devices combine harvesters
Authors: Kozyrev Eduard , Metelkova Nadezhda , Lavrenova Tatyana , Homich Irina , Filonenko Lyubov
Published: June 2020

In this article we studied the work of cutting beater in the transition zone of a combine harvester threshing drum. The influence of the parameters of the beater on the reflection of grains in its interaction with the heap flow and feed to the first stage of the straw-cutter is considered. A constructive scheme of the location of the working bodies of the transition zone showed a decrease in losses for straw.
Theoretical foundations of modeling the process of transport vehicles steel ropes structural defects formation
Authors: Korotky Anatoly , Marchenko Edward , Popov Sergey , Marchenko Julianna , Dontsov Nikolai
Published: June 2020

The article presents materials on the study of mathematical modeling of splicing (binding) of steel rope used to transmit traction by friction. The developed mathematical model splicing (binding) describes the stress-strain state of strands (wires) from quasistatic loads, arising in the cyclic tension process and bending of steel rope on rope sheave, in which the resultant force in steel rope cross section is shifted relative to the central axis, causing it to bend and torsion. Using experimental data, it was found that the steel rope torsion and bending is caused by the linking technology in the nodes where strands are replaced. Experimentally established, that defects on the splicing (binding) site manifested as a result of cyclic tensile and bending loads on rope sheave, which is connected to limited mobility of the strands in nodes due to cross section symmetry violation.
Modeling of long length and complex shaped chain and planed conveyor noise forming
Authors: Balinskaya Mariya , Meskhi Besarion , Khozyaev Igor
Published: June 2020

The article presents an analysis of the chain-slat conveyor in terms of noise generation. It is shown that, due to the volumetric layout and long length, it is one of the main sources of noise generation. Based on these studies, a theoretical model of its noise generation is developed. The model has been tested experimentally. The coincidence of the calculation of the results and experimental data is quite acceptable. This gives reason to talk about the possibility of using the model for calculating the noise of the conveyor of other schemes.
Digitalization of the agro-industrial complex: analysis of existing vulnerabilities in quantum cryptography systems
Authors: Cherkesova Larisa , Korochencev Denis , Revyakina Elena , Boldyrihin Nikolay , Roshchina Evgeniya
Published: June 2020

This article deals with vulnerabilities of quantum cryptography systems and quantum key distribution. Solutions that exclude the possibility of quantum attacks on existing quantum key distribution systems are proposed.
Peculiarities and development factors of modern agricultural engineering
Authors: Zhukova Tatyana , Panfilova Olga , Avlasenko Ilona , Avlasenko Lyudmila
Published: June 2020

Functioning dynamics of agricultural engineering nowadays is under analysis in this article. It is noted that the formation of a modern agricultural cluster is influenced by many factors that can cause problems for its optimal functioning. The topical question is to define the role of state regulation of the agricultural machinery industry in Russia, to search for the new regulating economic instruments for the effectively developing agro-industrial complex. Adaptation of agricultural engineering to a constantly changing competitive market and the ability of domestic producers to survive in a crisis depends on the favorable conditions created for the agricultural producer and on the use of the support mechanisms that are adequate to the current state of the market.
Innovative statistical information system for tracking the quality of agricultural machinery production
Authors: Golubeva Olesya , Shemerey Georgiy , Mirnyy Viktor , Chaava Mikhail
Published: June 2020

This article highlights the functional aspect of developed software for statistical control of production quality and the possible areas of application of the developed software, in particular, manufacture of agricultural machinery at enterprises.
Studies related to the calculation of the noise. The study of pumping hydraulic systems and the study of the use of an unloading valve in a hydraulic system
Authors: Kobzev Kirill , Vyalov Sergey , Rybak Alexander
Published: June 2020

In order to identify the main functional capabilities of the control system of the pump-accumulator hydraulic power source equipped with a pump unloading machine of the proposed design, a numerical experiment was carried out. The experiment was a numerical solution of the above mathematical model of a power source. During the experiment, the influence of various structural parameters of the hydraulic pump unloading machine and the functional parameters of the power supply system as a whole on its dynamic properties was revealed. The article discusses the control system of a hydraulic power source of constant pressure, which is a pump-storage power source, equipped with the original design of the automatic unloading of the hydraulic pump, which provides relay switching of its operation mode. A mathematical model is proposed, obtained using a modeling technique based on the application of the theory of volumetric rigidity of hydraulic systems and their elements. The results of a numerical experiment carried out by numerically solving the equations that make up the mathematical model of a power source are also presented.
Analysis of design and technological solutions of strip sowing machines
Authors: Melnikov Dmitry , Ignatenko Ivan , Tsarev Yuri , Vivchar Dmitry
Published: June 2020

General analysis of the design and technological solutions of machines for strip sowing is given. The task is to find a middle ground between constructive and technological solutions and zonal conditions that would ensure high productivity of the cultivated crop at minimal cost. The analysis shows that a promising direction is the use of combined aggregates designed for surface tillage, both for sowing grain crops and for row crops, with simultaneous application of mineral fertilizers and harrowing.
Artificial intelligence methods to control the energy efficiency of electric rolling stock online
Authors: Cheremisin Vasily , Istomin Stanislav , Perestenko Artem
Published: June 2020

The international practices in organizing the energy consumption control of electric rolling stock are analyzed. As a result, it was concluded that currently the issue of organizing the energy consumption control of electric rolling stock is mainly solved by using analytical methods. These methods are based on designing the simulation models, which are usually based on the Pontryagin maximum principle. However, considering the development of recording systems for motion parameters of electric rolling stock, as well as other automated systems of Russian Railways, it seems promising to develop and study artificial intelligence methods and algorithms for solving real-time monitoring issues of electric rolling stock energy consumption. It was also determined that the most modern motion parameter recorders have a number of significant drawbacks from the data analysis point of view. Such drawbacks include insufficient data and their low reliability, lack of linking the recorded data to trips and locomotive teams, the impossibility of choosing a constant interval for recording measurement results. Moreover, there is also high probability of errors when recording data on the cartridge, lack of GPS/GLONASS satellite navigation system, lack of wireless data transmission, imperfection of software and inconvenience of exporting data from a cartridge file and its incompleteness. In order to test the energy efficiency assessment of electric rolling stock within the limits of arbitrary energy tracking areas, the Corresponding software was developed on the basis of data from the motion parameters recorders. However, developing the new complex automated system is required for the full implementation of the proposed consumption tracking method. Such system should combine the entire set of measured parameters, both for electric rolling stock and for the traction power supply system.
Agroecological justification of winter wheat fertilization systems in the south-west of the Central Black-soil region
Authors: Tyutyunov Sergey , Solntsev Pavel , Stupakov Alexey , Kulikova Marina , Khalaf Al Dhuhaibawi Haider
Published: June 2020

Under the conditions of the south-western part of the Central Black-soil region in the grain-and-plant crop rotation on the black-soil the typical maximum yield of winter wheat was 5.52 t/ha when using the organic-mineral fertilizer system as part of mineral fertilizers in the dose of N60P60K60 and manure in the dose of 40 t/ha according to the third level of plant protection (seed etching of herbicide fungicide insecticide growth substances) with maximum payback of 1 kg of mineral fertilizers with grain harvest increase – 15.5 kg. Yield increase at the 1st level of plant protection (seed etching) was 1.86 t/ha (68.1%), at the 2nd level of protection (seed etching of herbicide fungicide) – 2.55 t/ha (93.4%) and at the 3rd level of protection – 2.79 t/ha (102.2%). The highest increase from pesticides was 0.69 and 0.93 t/ha (15.0 and 20.3%), respectively. The use of such a fertilizer system is justified, in which the energy coefficient was 1.03 and 1.05. The design of an organic fertilizer system using manure does not meet the requirements of bioenergy efficiency at all levels of plant protection (Кee = 0.79-0.87).
Assessment of the combined effect of heavy metals and polyaromatic hydrocarbons on the cultural plants
Authors: Mandzhieva Saglara , Barakhov Anatiliy , Minkina Tatiana , Chaplygin Victor , Sushkova Svetlana
Published: June 2020

The environmental contamination by heavy metals (HM) and polycyclic aromatic hydrocarbons (PAH) is often due to exposure to complex sources of industrial and agricultural activities. The aim of the work is to evaluate the combined effect of CuO and benzo(a)pyrene (BaP) on the state of spring barley plants. It was established that the soil combined pollution by CuO and BaP has a negative effect on all morphobiometric parameters of barley. The most sensitive indicators of combined contamination are the length of the roots, the mass of 1000 grains and the yield of barley.
Development of curd product technology with the addition of grape seed oil
Authors: Gerber Yuri , Gavrilov Alexander , Omelchuk Vladimir , Oshchepkova Ekaterina
Published: June 2020

The article is dedicated to the study of the raw materials in the Republic of Crimea, as well as to the assortment of enriched dairy products and the development of an enriched curd product. The relevance and novelty of this technology lies in the fact that the oil obtained from grape seeds is used as the added component. It has therapeutic properties that have been repeatedly proven. The objectives of the work were to substantiate the production technology of the curd product with the addition of grape seed oil for therapeutic purposes and to develop the technology, which will allow to obtain a product with high nutritional properties, the physicomechanical structure required by the standard, as well as to minimize the loss of beneficial components that make up grape seed oil.
Soil resistance in the process of dams’ irrigation canals profiling
Authors: Apalkov Alexander , Apalkov Sergey , Kuren Sergey , Popov Sergey , Dontsov Nikolai
Published: June 2020

The questions of processing technology of dam channels using appropriate mechanisms are presented taking into account the requirements of modern engineering hydrology. Channel profiling with the best quality and performance can be carried out by means of mechanization at the expense of working tools, able to process not only longitudinal but also cross-sections of channels. According to calculations, there was established, that the best condition for moving soil on the channel slope in front of the passive knife, is an equable distribution along the slope. It was marked, that the strength of the soil pressure is most affected by the installation value of the trowel knife and the thickness of the loosened soil layer to be compacted. Recommendations on increasing the active working body stability of the dam profiler are given.
Modeling the hydrophysical soil properties and comparative analysis for three systems of functions
Authors: Terleev Vitaly , Ginevsky Roman , Lazarev Viktor , Nikonorov Aleksandr , Topaj Alexander , Dunaieva Ielizaveta , Petrushin Aleksey , Mitrofanova Olga , Zakharova Elena
Published: June 2020

A functional description of the hydrophysical properties of the soil as a capillary-porous medium is presented. The described functions of water retention capacity and hydraulic conductivity of the soil have common parameters, which are interpreted within the framework of physical and statistical concepts. The practical significance of the proposed functions lies in the fact that the volume of labor-intensive field measurements necessary, for example, for modeling the dynamics of soil moisture, is significantly reduced. To identify the parameters of these functions, it is sufficient to use data only on the water retention capacity of the soil. The parameters identified in this way can be used to predict the ratio of the hydraulic conductivity of the soil to the moisture filtration coefficient. The presented system of the hydrophysical functions of the soil is compared with world analogues using literature data on soils of different texture.
Quality of farmer’s life in rural areas in Vietnam
Authors: Nguyen Thi Mai Lan , Vu Thu Trang , Nguyen Nhan Ai , Nguyen Thi Thanh Nga , Tran Thi Xuan , Ngo Thuy Hao , Nguyen Thi Hoa Mai , Nong Thi Nhung , Hoang Thu Trang
Published: June 2020

Improving quality of life (QOL) is an important objective. This study measured the QOL of farmers in rural areas in Vietnam using the WHOQOL-BREF. 600 farmers from 5 provinces in Vietnam participated in the study. Farmers reported low QOL, with psychological dimension had the highest QOL score and environmental dimension had lowest QOL. Male, young, well-educated, married, healthy farmers and farmers who had average living standard, living in small families, living with having less than 3 working members, and have savings were more likely to have higher QOL. However, only 3 factors predicted QOL: education, living standard and number of working members. Implications on Vietnamese family culture and the role of agriculture in modern society were discussed.
Assessment of tourism development in Arctic entities
Authors: Lukina Olga , Kurochkina Anna , Karmanova Anna
Published: June 2020

The article reflects the main aspects of the development of the tourist industry of the Arctic regions. The characteristics of the tourist environment of each of the eight states forming the Arctic are presented. Dynamics of tourist flows of regions is considered. Trends in the further development of Arctic tourism are reflected. The analysis of statistical data on the subject under study is presented, conclusions on the topic are drawn.
The mechanism of public administration of the travel industry development: prospects for the ecotourism development
Authors: Kraynyuk Lyudmyla , Uhodnikova Olena , Vlashchenk Nataliia , Sokolenko Anna , Viatkin Kostiantyn
Published: June 2020

The paper is devoted to searching ways of efficient support of public administration of the travel industry development. Tourism system has its own specific peculiarities, which influence the implementation of the functions of public administration. Among such peculiarities there are high commercialization of the branch, financial performance of investments and investment attractiveness. The paper considers trends of travel industry development, among which there are tendencies towards the increase of number of tourists, growth of tourist flow and income from travels. Trends of the travel industry development were analysed according to definite parts of the world. Also, trends in the development of ecоturism are considered. As a result of the analysis conducted the negative impact of various factors on the tourism development and aspects of improvement of the effectiveness of tourist activities. On the basis of the analysis conducted among the leading countries of the world according to the statistical data with regard to visiting by tourists, basic approaches to the construction of systems of public administration of the travel industry development were determined. Based on this analysis the proposals were made as to the improvement of public administration system in the sphere of tourism; they can be applied at the global and regional levels in order to maximize implementation of the travel industry potential and socioeconomic functions, being performed thereby in the society. The relevance of the development of ecotourism is determined, which is associated with the solution of global environmental problems.
Usage of frequency-controlled electric driver for hennery air ventilation systems
Authors: Goryainov Mikhail
Published: June 2020

An uncontrolled electric driver is characterized with assonance with its features to technological process requirements. The most important characteristic of ventilation machines used in hennery air ventilation systems is the correlation between pressure and efficiency. To minimize the losses in running ventilators we have to control the ventilation process, thus to maintain the desired mode without departure from optimal value.
Theoretical and experimental studies of effective thermal insulation in the production, storage and transportation of agricultural products
Authors: Lemeshko Mikhail , Maslennikov Snanislav , Bashnyak Sergey , Kokunko Irina
Published: June 2020

The article presents the results of research on a new technology for increasing the thermal insulation properties of fences based on sandwich panels for thermal insulation of buildings, storage facilities, cooling chambers, industrial and residential premises, as well as for the production, storage and transportation of agricultural products. The costs of cold and heat are reflected in the cost of agricultural products. The idea is to replace the air in the pores of mineral (basalt) wool with gas with low thermal conductivity. The article presents a theoretical analysis of the possible effectiveness of this substitution, and the developed research methodology. The analysis made it possible to predict a possible decrease in the heat transfer coefficient by about 21%. This is a very high indicator. It can be assumed that approximately this value can reduce the cost of electricity spent on maintaining rational temperatures. The scheme and description of the stand for experimental research, and the results of these studies are given. It was found that as a result of the conducted experiments, it was possible to obtain a decrease in the thermal conductivity of sandwich panels with argon by 8.8%, and with carbon dioxide by 10.2%.
Research progress of steel slag asphalt concrete
Authors: Sun Jian , Bieliatynskyi Andrii , Krayushkina Kateryna , Akmaldinova Oleksandra
Published: June 2020

Steel slag asphalt concrete is one of the important components of asphalt concrete. There are some differences between the steel slag asphalt concrete and ordinary asphalt concrete. Based on the research of scholars at home and abroad, this paper systematically introduces the steel slag characteristics and excellent performance of steel slag asphalt concrete, summarizes the problems existing in the practical application of steel slag asphalt concrete, and provides references for its promotion and application.
Optimization of the construction organization’s work plans by loading production units
Authors: Oleinik Pavel , Yurgaytis Alexey
Published: June 2020

In the article, the authors consider the problems of complex algorithmization and systematization of approaches to optimizing the work plans of construction organizations using various modern tools, including, for example, evolutionary algorithms of “conscious” enumeration of options for solving a target function from an array of possible constraints for a given nomenclature. Various standard schemes for modeling the processes of distribution of labor resources between the objects of the production program are given. As the results of the study, the authors formulate the conceptual algorithm underlying the written software package for the operational harmonization of the production program (work plans) in accordance with the loading of production units, released labor resources and other conditions stipulated by the model.
Information system for the content of natural and man-made radionuclides in building materials
Authors: Buzina Daria , Engovatov Igor
Published: June 2020

Natural radionuclides include the 238U and 232Th radioactive families with daughter decay products and 40K potassium. In addition to these, the raw materials may contain man-made radioactive nuclides formed due to accidents at the nuclear facilities and its uncontrolled release into the environment (for example, 137Cs). Reducing the impact of radiation exposure on humans and the environment is an urgent task, both in Russia and abroad, given the rapid quantitative growth of the range, manufacturers, suppliers and consumers of building materials associated with the general trend of urbanization. Currently, there is a large number of studies on the natural and man-made radioactivity of building materials. As a rule, they present disparate and local scientific results, which complicates their accessibility to a wide range of interested parties manufacturers and consumers of construction products. Therefore, it is necessary that information on the radiation and environmental cleanliness of various materials and products was easily accessible to all comers. An information system on the natural and man-made radioactivity of building materials and products should become a tool for solving this problem. The work outlines the principles of creation and practical implementation, structure and content, goals, objectives of the field of destination and application of the information system for natural and man-made radioactivity of building materials and products.
Analysis of roof greening technology impact on rain and meltwater retention
Authors: Sysoeva Elena , Gelmanova Margarita
Published: June 2020

Over the past 20 years, a large number of studies have been published on reducing storm runoff by various types of green roofs. This article analyzes the results of experimental studies presented in 39 publications on green roof runoff reduction in a climate similar to the climate of Russia: in Canada, the USA, Finland, Norway, France. An analytical review found that the ability of green roofs to retain rainfall varies from 20 to 99.5% depending on climatic conditions (duration and intensity of rains, duration of dry periods, solar radiation, temperature and humidity, wind conditions), the properties of green roof layers (moisture capacity of the substrate and a drainage layer, the substrate thickness), the type of vegetation, the geometry of a green roof (slope and orientation). Green roofs can be a useful tool for reducing urban storm water runoff. However, in order to ensure high efficiency, it is necessary to use green roof technology with other measures to reduce runoff.
Joint devices for modular removable road pavement slabs made of polymer materials for agribusiness
Authors: Ukolov Sergey , Shevchenko Sergey , Simonov Dmitry , Trepalin Vladimir , Yustikova Liliya
Published: June 2020

The article deals with the design of joint devices for a modular removable road pavement plate (slab) made of polymer materials for use in agriculture. The design of joint devices allows the use of road slabs in heavy traffic under adverse soil and hydrological conditions, with repeated assembly and disassembly. The proposed designs are simple to manufacture and ensure installation and removal of road slabs made of polymer materials within a short time.
Risk-based construction safety index as an integral indicator in the agricultural sector
Authors: Simankina Tatiana , Romanovich Marina , Sharmanov Vladimir , Mamaev Anton , Blagodatskaya Angelina
Published: June 2020

A new indicator for monitoring the level of labor protection at construction sites in the agricultural sector is proposed – the construction safety index with consideration of risk, which combines the Elmery system and the Fine-Kinney method. This method shows a complete picture of ensuring the level of labor protection at the construction site, taking into account emerging risk situations in the dynamics of construction. The universality of this approach allows each enterprise, depending on its technological features, to determine the list of hazards that it is going to control, which will allow predicting the development of negative scenarios, as well as planning the amount of money to ensure the proper level of labor protection.
Mechanical properties of composite material laminates reinforced by woven and non-woven glass fibers
Authors: Karnoub Amer , Huang Hajian , Antypas Imad
Published: June 2020

The purpose of this work is to study the mechanical characteristics in 3-point bending and in traction; static; and the impact behavior of three specimens of laminates made of glass fiber and polyester resin non-woven and woven, with the aim of using them in the repair of boat hulls and enhancing their value in the naval industry. Three types of laminates were developed by contact molding. These different specimens of laminates made of woven, non-woven and combined glass fiber (woven and non-woven) were subjected to mechanical tests (traction and 3-point bending). Analysis of the results of the tests carried out on these three types of laminate shows that one specimen stands out and gives higher mechanical performance than the othertwo.
Modelling particle movement in conical guide of seeder pneumatic pipe
Authors: Zaitsev Vladimir , Kravtsov Artem , Konovalovi Vladimir
Published: June 2020

In the course of the study, methods for ensuring the centeringof particlesofbulkmaterialintheairflowmovinginthepneumaticductofthe seeder were investigated. To solve this problem, it is proposed to use a conical confusor. The aim of the study was to obtain the functional dependences of the movement of particles in a conical airflow guide (confusor) for the conditions of transportation of the sown particles on the basis of force analysis and to identify the nature of the movement of the sownparticlesinataperingairflow.Duringthestudy,todescribethemotion of particles in a vertical tapering pipe, a system of expressions was substantiated. The developed mathematical model of particle motion in a conical air flow, implemented in the MathCAD mathematical package, allowscalculatingboththeparticletrajectoryandthevelocityparametersof the air flow and the particles to be sown. The digital calculation results in the MathCAD program are in good agreement with the finite element calculations. The magnitude of the error in air velocity is less than 1%. The differences in the velocities of the transported particles in the calculation options do not exceed 7%. The installation of a conical guide helps tofocus the flow of particles in the central part of the narrowed air line. In this case, part of the particles in the central part of the guide will retain the initial longitudinaltrajectory.Theangleattheapexoftheconeandtheparameters of the particles affect the speed and angle of the tangent contact of the particle with theguide.
Properties, processes and regimes of soil solutions and surface waters
Authors: Podvolotskaya Guriyat , Belopukhov Sergey , Savich Vitaly , Sorokin Andrey , Tyutrin Nikolay
Published: June 2020

Soil solutions and the surface waters are characterized by properties, processes and regimes. Soil solutions of different soils and their surface water have different biological activity and change the activity of dissolved stimulants and inhibitors. The object of the study are soil solutions of the main types of soils obtained in the model experiments with the ratio of soils: water equal to 1:1 and 1: 2, soil solutions and surface water in the flooding of soils with water for 1 week – 3 months. The research method consisted in the assessment of pH, Eh, activity of K, NO3, NH4, Ca, Mg by conventional methods, assessment of concentrations of water-soluble compounds extracted from soils by ionite membranes, in the assessment of biological activity of solutions using biotests. The following is suggested for additional evaluation: the using of cation and anion membranes, determination of interrelation between the properties of waters, equation of pair correlation and multiply regression. The informative value of the gradient of surface water concentrations at different distances from the floor of the reservoir, at different depths of the overwatered soils is shown. The mobility of Ca, Mg, Fe, Mn in soils and the content of their water-soluble forms depends on both pH and Eh, whose influence on the content of water-soluble forms of the considered cations shows the effects of synergy and antagonism. The rate of change in the composition of soil solutions during soil flooding depends on a combination of soil properties, temperature, and duration of flooding. Soil solutions of different soils and their surface waters have differentrates.
Improving the efficiency of farm management using modern digital technologies
Authors: Grober Tatiana , Grober Oleg
Published: June 2020

Around the world, farmers are increasingly turning to the concept of smart agriculture. The concept of smart agriculture includes the use of innovative digital technologies, mobile applications, sensors and tracking devices, communication channels, data analysis tools, and other intelligent solutions for users. This article discusses the farm of LLC “Rodon”, located in the Rostov region. Due to its low profitability, the aim of the work was to improve the efficiency of farm management using modern trends in agricultural development and digital technologies. The activity of this farm can be represented as a model of multi-criteria optimization with target functions of profit from the sale of crops and increasing the yield of cultivated crops and restrictions on the ratio of areas by cultivated crops, by field areas, the number of purchased seeds, fertilizers, and other expenses. To optimize this model, the following tasks were solved: a plan for crop rotation of cultivated crops for 5 years was drawn up; a software package consisting of user applications “Profit calculation” and “Crop rotation” was developed. The user can quickly and easily determine their optimal strategy for the next year.
Mechanisms for the modernization of regions having agricultural specialization in the imperatives of the digital economy
Authors: Kuchnarenko Tatiyana , Pudeiyan Liubov
Published: June 2020

The purpose of this article is to study from the perspective of a balanced modernization development of the region the mechanisms of actively involving the agribusiness sector in this process, which in a number of Russian regions of relevant specialization is considered as the main driver of their strategic socio-economic development. The methodological base of the study is formed on the basis of the convergence of systemic, synergetic and evolutionary approaches, as well as the basic principles of theories of regional economics and regional governance, the economic landscape, spatial distribution and use of resources and productive forces. The article analyzes the state and trends of the modernization development of agro-industrial complexes in the regions of southern Russia from the perspective of solving the problem of balanced socio-economic development of their territories in modern imperatives of informatization and digitalization. The authors demonstrate the possibilities of intellectualizing the potential management processes of regional and interregional agricultural holding structures. It is shown that the use of adaptive, taking into account the agricultural specialization of the regions, tools for supporting management decision-making in the field of regional agribusiness will contribute to its involvement in the regionwide dynamics ofmodernization.
The key factors for development of Russian agricultural enterprises of various business patterns
Authors: Isaeva Olga , Kabanenko Mikhail , Chistyakov Andrey , Dubrova Lyudmila , Filin Nikolay
Published: June 2020

The current Russian agro-industrial complex is marked by the complexity of business structures, differentiation of regions according to the definitive aspects of development of the enterprises of various business patterns and the efficiency of their economic activity. The essential direction of farming industry efficiency increase is the development of organizational and economic tools and framework, along with the Corresponding institutional environment, which provide positive results of operation of agricultural enterprises of various business patterns in the country’s economy. In this context, there is an objective necessity for in-depth studies to research the most significant factors influencing the activity of national agricultural enterprises. The given paper is dedicated to discussion of the results of such research. The core results of study aimed to clarify and complete the key factors for the development of economic entities of Russian agricultural sector are presented in the paper. These key factors are divided into five groups according to the area of occurrence: political and administrative, economic, technical and technological, natural environmental, socio-demographic. Each group of factors is considered in summary and the basic sources of occurrence along with the influence of each group of factors are identified.