bluuebunny/crossref_metadata_2025_split huggingface dataset:
Control and testing of the additive systems color gamut in engineering
Authors: Golunov A V , Shcheglov S A , Golunova A S , Kolozova O A , Trapeznikova O V 
Published: May 2020

Abstract
The article discusses the issue of the additive color reproduction systems control in engineering. Additive technologies provide a wide range of possibilities for the formation of a three-dimensional product with the coloring of the product in mass. However, there is no technology for color management and control of distortion of the color formation of the cured material. In the course of the study, a method of color management in the process of manufacturing a three-dimensional model using CJP (Color Jet Printing) or Binder Jetting technology is proposed to ensure consistent color communication in the CAD system “program – 3D printer – material”. The notion of the additive system in engineering is implemented. According to the developed technique the performance of the color gamut of the additive system on the basis of plant ZPrinter 450 are specified.
Morphemic analysis of Uzbek nouns with Finite State Techniques
Authors: Bakaev I I , Shafiev T R 
Published: May 2020

Abstract
The article developed a mathematical model that describes the morphemic description of the structure of nouns in the Uzbek language. The developed model takes into account all forms of word-forming suffixes, affixes and creating word forms that belong to the lexical category of nouns. For the created mathematical model of word forms, an algorithm for morphemic parsing and determining the pre-ownership of word forms using finite automation is developed.
Two-dimensional data-block compression of information-measuring system algorithms
Authors: Levenets A V , Nefed’ev D I , Bazhenov R I , Masyagin V B , Beknazarova S S 
Published: May 2020

Abstract
The authors suggest a new approach to develop measurement data compression algorithms. According to that a data frame is considered as a bit sequence formed into a two-dimensional well-ordered linear structure. It is supposed that there is no explicit bind to the source data / specifications width within the collected structure. The researchers propose block compression algorithms. They take into account not only the relationship between one sensor readings in adjacent samples, but also the connection of the samples in one frame so that it is expected to contribute to higher compression efficiency. The studies of the proposed compression algorithms have shown that they can be effectively used for compressing data frames of information-measuring systems. The mid-compression ratio of the proposed block compression algorithms falls in the range 8.0 to 9.5, and a simple adaptive algorithm observed in the paper provides the maximum value of the average compression ratio.
Simulation of purposeful movement on the example of moving cars along the route graph
Authors: Purtov Andrey 
Published: May 2020

Abstract
The main topic of the article is the actual problem of organizing purposeful movement. The problems of coordinating the interests of organizers and participants of the movement, building incentives, goals, and decision-making procedures are considered. A simulation model of cars movement along the route graph has been developed. The route graph is linked to the map of Omsk. Simulation experiments were conducted. The simulation model is implemented in JavaScript. The model uses a prize function and a sample for routing. The results of simulation experiments demonstrating the influence of the sample parameters and the prize function on the time and cost of achieving the goal, the value of prizes are presented. The developed simulation program can be used to analyze purposeful movement along a directed graph in systems for various purposes.
Multidimensional model of heat-moisture transport in porous media
Authors: Ravshanov N , Shadmanov I U 
Published: May 2020

Abstract
A three-dimensional mathematical model and numerical algorithm for the process of heat-moisture transfer are considered in the article, taking into account such factors as heat dissipation and moisture release in a natural product, the effect of changes in temperature and humidity of the environment on storage and drying of porous agricultural products. The developed model and numerical algorithm make it possible to predict the changes in temperature and moisture content at arbitrary points of the porous body, and serve to prevent the loss of quality and spontaneous combustion of materials under solar radiation.
Bayes-Minkowski measure and building on its basis immune machine learning algorithms for biometric facial identification
Authors: Sulavko A E 
Published: May 2020

Abstract
In this paper we propose a new Bayes-Minkowski proximity measure that can be used to process correlated biometric, biomedical, and other type of data (with the normal distribution law or close to it). The Bayes-Minkowski measure is an antagonist criterion with respect to the Minkowski measure, since it shows opposite properties. It is possible to build a hybrid network of classifiers and apply immune learning algorithms to the network based on these proximity measures. It was demonstrated in the work on the example of tasks of identification and verification of a person’s personality by facial image. The achieved errors probabilities of person’s identification and verification by face features were: 0029 и 0.0017, respectively.
Two-grid algorithm for a system of singularly perturbed reaction-diffusion equations on Shishkin mesh
Authors: Tikhovskaya S V , Korbut M F 
Published: May 2020

Abstract
A system of two coupled singularly perturbed reaction-diffusion equations is considered. A cascadic two-grid algorithm of high accuracy based on a uniform with respect to small parameters convergent difference scheme for such problem has been developed. To increase the accuracy of the difference solution by an order, the Richardson extrapolation method was applied. The results of some numerical experiments are discussed.
Multi—facility placement on lines with forbidden zones and routing of communications
Authors: Zabudsky G G , Veremchuk N S 
Published: May 2020

Abstract
This article is about placement of interconnected facilities (equipment) in a plane on parallel lines with forbidden zones. Placement of the facilities inside of the forbidden zones is not possible. The facilities are connected to each other and with the zones by some communications. Communications (routing of communications) between the facilities and between the facilities and zones which are placed on different lines (adjacent lines) pass through a fixed vertical component (viaduct). It is need to place the facilities on the lines such a way that the total cost of communications between the facilities and zones will be minimal. There are many practical applications of this problem in science and techniques, for example, when designing engineering devices. Some properties of the problem are formulated. A mathematical model of integer nonlinear programming of the problem is constructed. It is shown that algorithms for solving of a problem with rectangular metric without the viaduct can be used for solving of the problem under consideration.
Computer simulation of three-layer systems based on ferromagnetic nanofilms
Authors: Belim S V , Larionov I B 
Published: May 2020

Abstract
Computer modeling of magnetization behavior of thin ferromagnetic Ising films separated by antiferromagnetic film was carried out. Metropolis’s algorithm was used for the simulation. Finite-dimensional scaling theory has been used. Phase transition temperatures were determined by Binder cummulants. Systems with different number of layers in ferromagnetic and antiferromagnetic film have been investigated. Temperatures of phase transitions in ferromagnetic and antiferromagnetic films are determined. A phase diagram of the system has been constructed. There are four phases on the phase diagram. Phase for implementation the spintronic devices is defined. The distribution of magnetization and chess magnetization across the layers of the system in different phases has been investigated.
The method of the research of residual gases in a tight case of quartz resonators
Authors: Belousov K A , Strunin V I , Khudaibergenov G Zh 
Published: May 2020

Abstract
Mass spectrometric analysis of closed-volume gases of quartz resonators-thermostats emitted by the materials used in the installation of the device. A measuring complex with a vacuum of 10−5÷10−6Pa has been developed. The mass spectra of the residual gases were obtained before the depressurization of the products in the DIL-14 housing. The temperature range of the study is 20÷160 °C.
Analyze and optimization parametrs for protatiping using 3D printer
Authors: Blokhin A V , Gritsay A S , Sapilova A A , Storozhenko N R , Goleva A I , Baeva M A 
Published: May 2020

Abstract
As part of this work, a simulation model was constructed to evaluate the print quality of three-dimensional objects using a 3D printer. A study was conducted using non-contact scanning of a 3D model and varying the parameters affecting print quality, followed by an assessment of the degree to which the printed 3D model corresponded to its standard using software. The result of this study is the obtained values of the optimal printing parameters of the 3D model, which allow to obtain a high estimate of the degree of correspondence of the printed 3D model to its standard, and, consequently, high quality printing on a 3D printer.
Mechanical stresses in aluminum nitride films formed by magnetron sputtering
Authors: Strunin V I , Chirikov N A 
Published: May 2020

Abstract
The results of studies of the dependence of the mechanical stresses of aluminum nitride (AlN) films obtained by direct current magnetron sputtering on the formation modes: substrate temperature, discharge power, ratio of nitrogen and argon fluxes at a pressure of 0.07 Pa are presented. It is shown that the minimum mechanical stresses are observed at a substrate temperature of 573-613 K, a power of 900 W and a gas ratio of 4/5 - 5/5, and are (15-22) * 108 N / m2.
Analytical and numerical estimates of the stress state of units of a mining shovel boom
Authors: Alshanskaya A A , Doronin S V 
Published: May 2020

Abstract
The boom units of a mining shovel are structurally complex metal structures of large dimensions. Traditional methods of design calculations for such structures are based on beam-type structural models, while the actual configuration is taken into account by introducing complex built-up sections which include sections of pipes, sheets, and ribs. The correspondence of such beam-type structural models has not been systematically studied yet, which leads to crack initiation and destruction of structures on the one hand and to an unreasonably high use of metal on the other. As a result of numerical analysis of the boom units in three-dimensional statement, the actual errors of beam-type structural models in characteristic sections of structures in the most complex design cases of mining shovel loading have been determined and analysed.
Revisiting the problem of choosing a downhole elastic wave generator for the technology of vibro-seismic impact on oil and gas deposits
Authors: Buryan Yu A , Kvasov I N , Sorokin V N 
Published: May 2020

Abstract
Currently, there are no sufficiently effective submersible vibrators for the implementation of a promising technology for vibro-seismic impact on oil and gas reservoirs. In this paper, we consider the possibility of using a downhole elastic wave generator based on a two-stage centrifugal nozzle for the vibro-seismic impact technology (VSIT). The equation of non-stationary fluid flow through the nozzle has the form of a nonlinear Van der Pol differential equation. In this paper, when using the method of studying this equation in the Matlab/Simulink application package, the principal possibility of tincture of a well generator to the dominant frequency of an oil reservoir is shown. The result of the study showed that when using an automatic control system, taking into account the hydraulic flow and pressure transmission line, the elastic wave generator can be controlled by the generation frequency with the accuracy necessary for vibro-seismic action on oil and gas formations.
Justification of parameters of a disk tool for cutting asphalt concrete
Authors: Furmanov D V , Tyuremnov I S , Chizhov V S , Lysakov N E 
Published: May 2020

Abstract
The paper reflects the results of the study conducted to determine how a free rotary instrument cuts narrow joints in asphalt pavements required for road construction. Based on the analysis of strength characteristics of different asphalt concrete grades, we developed a mathematical model of working process, and this model stands as the calculation basis. The mathematical model associates the main parameter — cutting resistance force — with the material strength values and geometrical characteristics of the working body and the working process. The results of experimental confirmation of mathematical model reliability are presented in the paper.
Effect of the payload mass on forces acting from the overhead crane drives during movement in the mode of suppressing uncontrolled oscillations
Authors: Korytov Mikhail S , Shcherbakov Vitaly S , Titenko Vladimir V 
Published: May 2020

Abstract
Using two-point Hermite splines, the reference spatial trajectory of a payload on a non-rigid pendulum suspension of an overhead crane was set as a combination of plane controlled oscillations in two mutually perpendicular movement directions of the bridge and the trolley. Under the absent uncontrolled payload oscillations, payload, suspension point coordinates and the rope deviation angles were calculated. Using the example of a constant spatial trajectory of the payload bypassing a single obstacle in the absence of uncontrolled oscillations, the payload mass effect on the forces acting from the side of the bridge drives and the trolley was investigated. The time dependences for horizontal components of the drive side forces were determined using an overhead crane simulation model developed in the Simscape Multibody Matlab application. Payload of various masses was repeatedly moved along the reference constant trajectory by rigidly setting the bridge and trolley movement trajectories. By virtual sensors, the forces acting from the drives on the bridge and trolley were evaluated. The payload mass effect on the maximum values of drive forces is established to be linear. The results can be used in the design and development of intelligent mechatronic control systems for overhead and gantry cranes.
The analysis of bending of the rotational pump’s screws taking into account the variable moments of inertia along the screw
Authors: Proskuriakov N E , Lopa I V 
Published: May 2020

Abstract
The analysis results of longitudinal and cross bends of screws of rotational pumps is carried out. Check of the offered model of cross-bending of the screw both taking into account, and without thread is executed. The interrelation of bend of the screw and decrease in the moment of inertia of its cross-section is revealed and the model of calculation of the screw on stability in pitch considering these parameters is received.
Human-induced changes in Indonesian peatlands increase drought severity
Authors: Taufik M , Minasny B , McBratney A B , Van Dam J C , Jones P D , Van Lanen H A J 
Published: May 2020

AbstractIndonesian peatlands are critical to the global carbon cycle, but they also support a large number of local economies. Intense forest clearing and draining in these peatlands is causing severe ecological and environmental impacts. Most studies highlighted increased carbon emission in the region through drought and large‐scale fires, further accelerating peatland degradation. Yet, little is known about the long-term impacts of human-induced disturbance on peatland hydrology in the tropics. Here we show that converting natural peat forests to plantations can significantly alter the hydrological system far worse than previously recognized, leading to amplified moisture stress and drought severity. This study quantified how human-induced changes to Indonesian peatlands have affected drought severity. Through field observations and modelling, we demonstrate that canalization doubled drought severity; logging and starting plantations even quadrupled drought severity. Recognizing the importance of peatlands to Indonesia, proper management, and rehabilitating peatlands remain the only viable option for continued plantation use.
The sundown of home economical cilongok village: case of coconut farm agriculture
Authors: Arman A , Agustin H , Karim M , Kurniawan O , Purwandaya B 
Published: May 2020

Abstract
This study aims to provide a description on the development of coconut plantation in Cilongok Village. Brown sugar is an important and main source of income for the people of Cilongok Village, especially at Cilongok Sub-district. However, the recent development of the village as a district has an impact on coconut farming and the brown sugar home industry. The objectives of this is study are (1) to describe the recent development of coconut plantations and brown sugar production in Cilongok and (2) to provide a review of the development of Cilongok Village as a Sub-district Capital City towards the employment shifts of the agricultural workforce (penderes; in Cilongok Indonesia) in services, timber industry, and trade. The results show that the village of Cilongok as the capital city has an influence on the existence of coconut farming in the village. This condition affects social and economic conditions and developments. One of them is the social integration affected by money as a medium of exchange. The development of the service and building sector has an influence on the agricultural sector workforce. Initially, every household has a minimum of 2 penderes (the head of family and boys), but recently the number is decreasing, even none. Parents do not encourage their children to obtain a family economic source as a danger due to the risk and income considerations. Most generations of penderes choose to work as shop employees, wood industry and service workers.
The association of fecundity and morphometrics of mangrove snail Terebralia palustris Linnaeus 1967 in the mangrove ecosystem
Authors: Samsi A N , Andy Omar S B , Niartiningsih A , Soekendarsi E 
Published: May 2020

Abstract

Terebralia palustris is a snail that lives in the mangrove ecosystem. This snail is found around the mangrove roots. Snail fecundity is also influenced by several factors. This study aims to determine the association of fecundity with morphometrics and environmental factors. sampling is done randomly. The research station is 2. Each station has one plot measuring 10 m x 10 m and in it, there is a small plot measuring 0.5 m x 0.5 m in 4 pieces. Data were analyzed by regression using SPSS version 21 software. The average fecundity of snails in September was 85887.64 granules, October was 45962.67 granules, and November was 35668.62 granules. The average temperature of seawater is 35.20 ± 0.16 ˚C, the average salinity of seawater is 32.27 ± 0.63 ‰, and the average pH of seawater is 6.39 ± 0.09. The results of the regression analysis showed signs that the snail morphometry of T. palustris did not affect snail fecundity because the significance value was far above 0.05. The results of the regression analysis showed that acidity factors significantly affected fecundity with a significance value of 0.047 and the other factors is not affect.
Motivation of farmers to increase goats production
Authors: Rasyid T G , Rohani S T , Aminawar M , Darwis M 
Published: May 2020

Abstract
Goat is one of the livestock commodities which significantly contributes to the increase in community income. In addition to the economic benefits obtained, goat farming also has its own advantages. Raising goats does not require a large capital. In fact, it only needs a fairly simple maintenance system and goat livestock resistant to disease compared to other livestock commodities such as cattle and broiler farming. This becomes the reason behind many people in Jeneponto Regency are motivated to carry out goat raising efforts to increase the income of their families. This study aims to determine the motivation of farmers raising goats. The sampling was carried out by a simple random sampling technique of 60 farmers in Tamalatea District. Data collection was done through interviews and FGD using the Likert scale on each measured variable; 1 = disagree, 2 = doubt, 3 = agree. It was analyzed using descriptive statistics. The results showed that the motivation of farmers raising goats consisted of: (1) economic value; (2) request; and (3) the role of the government is in the agreed category.
Internal and external factors of rice farming in the coastal area
Authors: Saadah  , Amrullah A , Darwis  , Ibrahim T , Fudjaja L , Bulkis S , Dzulhajrah A S , Wahyudi D P 
Published: May 2020

Abstract
This research aims to determine and described internal and external factors, which become the strengths, weaknesses, opportunities, and threats of rice farming in the coastal area of Maros Regency. A sampling of the study area was carried out by the census method by taking the entire population into a sample of 23 farmers who were members of the Pajalayya Baru Farmer Group and key informants as many as two people consisting of village officials and extension workers. The result of this research identifies that there were four aspects of internal and external factors that influenced the development of rice farming in Kurri Caddi, which were strengths, weaknesses, opportunities, and threats. The strengths consist of the available workers, cultivation land, farming experiences, farmer’s productivity. The weaknesses consist of the lack of skills of the farmer, uncertified seed, unbalanced fertilizer use, bad-timing tillage, and farmers are reluctant to use new farming innovation. The opportunities consist of the emergence of new forms of employment, a group of farmers that provide the distribution of farming supports and facilities and strong community self-help. Threats consist of problems of road transportation facilities, attack of pests and diseases, Abrasion and erratic weather.
Livelihood strategy in fulfilling household needs of coastal communities
Authors: Rukmana D , Diansari P , Nadja R A , Rahmadanih  , Fahmid I M , Syahrullah  , Akhsan  
Published: May 2020

Abstract
This study aims to map the livelihood strategies carried out by coastal communities based on two livelihood bases; the agricultural sector and the marine sector. The livelihood strategy, which is a combination of capital and human resources, was influenced by the popular community social system. This research also aimed to analyze social systems that affect coastal communities in combining their capital and human resources. The research area was determined purposively, namely in the Punaga Village, Mangarabombang District, Takalar Regency. Determining the location of this study was based on the consideration that Punaga Village has potential resources that enable the community to have two or more jobs in fulfilling household needs. The livelihood strategy that has been applied so far can be divided into economic strategies and social strategies. Economic strategies include the agricultural sector and the marine sector. In the agricultural sector, coastal communities tried to increase the amount of paddy field production even though the land area was > 0.5 acres. Meanwhile, the marine sector used the potential of seaweed so that it becomes a production center. The social strategy was used to owe, save, and get a job in helping to meet household needs.