bluuebunny/crossref_metadata_2025_split huggingface dataset:
Three-dimensional force simulation prediction of flexible sensor based on BP neural network
Authors: Wang Feilu , Chen Yufeng , Song Yang , Hu Yong , Ye Rungen , Jiang Yanan 
Published: November 2020

Abstract
When the robot grabs the object, the force information detection of the object is the basis for the smooth grabbing process. The force information of the object can be fully reflected by detecting the force in the three-dimensional direction. In this paper, with polydimethylsiloxane (PDMS) as the substrate and embedded into the sensitive unit prepared by conductive rubber, a new flexible sensor which can detect three-dimensional force is designed. Firstly, based on the piezoresistive effect of conductive rubber, COMSOL Multiphysics software was used to carry out multi-physical field simulation experiment for the sensor. Furthermore, based on the nonlinear approximation ability of BP neural network and the resistance of simulation output, the training sample set and the test sample set were constructed by using the 5-fold cross validation method, and the BP neural network model was constructed to achieve the accurate prediction of three-dimensional force. Finally, the number of hidden layer neurons was adjusted to optimize the BP network model. The results of cross-validation experiments show that the sensor designed in this paper can effectively detect the three-dimensional force information, and the optimized BP neural network can significantly improve the accuracy of the three-dimensional force prediction.
A Computationally Efficient Single-Channel EEG Sleep Stage Scoring Approach using Simple Structured CNN
Authors: Li Hongzhe 
Published: November 2020

Abstract
Automatic sleep stage classification has been a hot trend since hand-crafted feature engineering is highly inefficient. However, current studies of automatic sleep stage scoring focus more on designing complex neural network structures to improve the model performance while neglecting the model efficiency. This causes both lengthy training time and highly demanding hardware are needed for model training, which is not favorable for future industrial applications. This work proves the concept that the simple model, such as a shallow Convolutional Neural Network (CNN) combining the proper data processing techniques, can achieve a comparable model performance (overall accuracy of 79.0 %) to the complex model (overall accuracy of 74.9-82.0 %). The designed model in this work also significantly improves the model efficiency by reducing the number of learnable parameters in the neural network. This approach provides a new insight into automatic sleep stage scoring study as well as other deep learning studies that the data processing and the model design are equally important.
Design and Application of Micro-lecture in Personalized Teaching of Computer Network
Authors: Tianjiao Liu 
Published: November 2020

Abstract
With the continuous development of social economy, more and more people begin to pay attention to the teaching methods of micro-lecture. In recent years, micro-lecture has been widely used in education. The advantage of micro-lecture is that it breaks through the limitations of traditional teaching mode in time and space. As a currently efficient teaching method, micro-lecture can make abstract knowledge straight forward and concrete, and it give students’ initiative a full play to improve students’ ability of learning on their own. Therefore, it better realizes the cultivation of students’ core literacy. Therefore, the personalized classroom in the age of computer network needs to design micro-lecture reasonably to play the role of micro-lecture and improve the effectiveness of teaching. Nowadays, many school leaders and teachers have begun to adopt teaching methods of micro-lecture. Apart from the high teaching efficiency of micro-lecture, the teaching mode of micro-lecture also meets the requirements of the new curriculum reform to improve teachers’ professional quality. This paper mainly studies the design of micro-lecture and its application in personalized teaching of computer networks.
Comparison of Holland’s Model and Near-Real-Time Predicting System
Authors: Zhuang Demi 
Published: November 2020

Abstract
Hurricanes have affected many tropical and coastal countries for years, but the history of hurricane simulation is short, due to the unpredictable nature of hurricanes. Although several models and methods developed by numerous scientists in the past have substantially enhanced people’s understanding of hurricanes’ formations and features, not all of the errors have been eliminated. To display the improvements of hurricane simulation in the past decades, in this paper, both the advantages and limitations of Holland’s wind model and a new near-real-time prediction model are compared by presenting their key calculations and main ideas, respectively. The modern near-real-time predicting system turns out to be more extensive and exact than the Holland’s wind model. Besides, the idea of the Monte Carlo simulation approach, an accepted hurricane simulation method, is briefly stated for the sake of complete understanding.
The use of ultrasound for development of baker’s yeast activation technology
Authors: Krasnikova E S , Babushkin V A , Morgunova N L , Krasnikov A V 
Published: November 2020

Abstract
Various approaches are used to improve baker’s yeast technological properties of and final products quality. Because of low-frequency ultrasound does not have a destructive effect on yeast cells, the aim of our research is to test a new method of improving the technological properties of baker’s yeast using low-frequency ultrasonic cavitation. The object of the study was active dried baker’s yeast Saf-levure (France). All experimental and control samples were processed in a “Grad” ultrasonic bath (Russia) with different intensities and processing times at a frequency of 35 kHz. It was shown that precure of baker’s yeast with ultrasound at a frequency of 35 kHz, an intensity of 0.5-1 W/cm2 and an exposure of 1 and 3 minutes redound to improving the baker’s yeast technological properties: the yeast specific growth rate increases by 1.8–2.7 times, and yeast rising power - by 1.2–1.6 times. At the same time, baked with ultrasonic-treated yeast bread has significantly improved physicochemical and organoleptic characteristics compared to traditional bread. Acidity and humidity of the bread crumb decreased by 1.2 and 1.3 times and porosity increased by 1.6-2.5 times with an increasing the time and intensity of the sonication. With increasing of sonication time and intensity, the bread crust became golden brown, the color of the crumb became lighter, and the loaf shape fluffier. The best results are obtained after precure of baker’s yeast suspension with ultrasound at a frequency of 35 kHz, an intensity of 1 W/cm2 and an exposure of 3 minutes.
Application of luminescence spectral assay for monitoring of intracellular metabolism in hepatocytes
Authors: Akchurin S V , Larionov S V , Krasnikova E S , Akchurina I V , Krasnikov A V 
Published: November 2020

AbstractThe method of evaluation of intracellular metabolism level in chickens’ hepatocytes, using luminescence spectral analysis with 5-([4.6-Dichlorotriazin-2-yl]amino) fluorescein hydrochloride (DTAF) is proposed. The dynamics of proteins content in chickens’ hepatocytes under experimental escherichiosis and in intact poultry was established using this method. A gradual increase in the proteins content in hepatocytes of intact chickens was revealed from 1 to 30 days. The proteins content in hepatocytes of chickens with experimental escherichiosis was gradually increased during the monitoring period, to the exclusion of the sixth day indicators, which were kept at fourth day level (4th day - 2.15 ± 0.01; 6th day – 2. 15 ± 0.02). Moreover, these indicators were less than similar indicators of the control group throughout the experiment.
Control of a flexible inverse pendulum based on the singular perturbation method
Authors: Abbas Zainib Hatif 
Published: November 2020

AbstractIn this article, a partial differential equation model for a flexible inverted pendulum system is derived by using the Hamilton principle. Specifically, problems of stabilization and the optimization of such a system are considered. In addition, the singular perturbation method has been used to divide the partial differential equation model for a fast and a slow subsystem. For a fast subsystem stabilization, the control algorithm proposed a boundary force applied at the free end of the beam which proved that the closed-loop subsystem is appropriate and exponentially stable. To stabilize the slow subsystem, a sliding mode control method was used to design the controller, while the method of linear matrix inequality was used in designing the sliding surface. In conclusion, it was shown that the slow subsystem is exponentially stable.
Small vibrations of mechanical systems in the case of degenerate eigenvalues
Authors: Pozhalostin A A , Goncharov D A , Panshina A V 
Published: November 2020

Abstract
Free vibrations of mechanical and hydrodynamic systems are considered. Some well-known works in this field are summarized and some aspects of computational nature are discussed. The eigenvalue boundary value problem is solved in the case of multiple roots for a system with n degrees of freedom. The case of the zero root of a semidefinite system is considered. The question of orthogonality of forms of natural oscillations is considered. It is shown that in some cases, the proximity of eigenvalues occurs in problems of dynamics of an aircraft containing elastic containers with a liquid. On the example of a mechanical analog of transverse vibrations of a cylindrical tank with a liquid, the possibility of rotation of the free surface of the liquid is shown.
Biometric identification and authentication based on a new method of a pulse wave contour forming
Authors: Gerashchenko M S , Fateev A G , Markuleva M V , Astafyev A N , Zefirov S L , Gerashchenko S I 
Published: November 2020

Abstract
The paper considers authentication methods, including biometric. The advantages, disadvantages and limitations of the known authentication methods are considered, and for the first time it is proposed to use hydrocuff pulse wave technology for biometric identification. A parameters set characterizing the pulse wave contour and its derivatives is defined. As the pulse wave mathematical processing result, a multiparametric feature space is formed. The paper considers the main problems that arise when collecting source data. To solve legal and ethical issues, as well as reduce the cost of forming a database, the possibility of applying algorithms for generating synthetic biometric images has been proved. Synthetic biometric images are designed to use neural network technologies for identification and authentication based on the large databases analysis.
Application of luminescence spectral assay to evaluate the results of a scientific experiment
Authors: Akchurin S V , Larionov S V , Krasnikova E S , Akchurina I V , Krasnikov A V 
Published: November 2020

Abstract
The method of characterization of functional state of epithelium of mucous membrane of alveolar glands of poultry proventriculus, using luminescence spectral assay with fluorescent dyes Ethidium bromide (EtBr) and 5-([4.6-Dichlorotriazin-2-yl]amino) fluorescein hydrochloride (DTAF) is offered. The dynamics of nucleic acids and proteins content in chickens’ cells under experimental klebsiellosis in antibiotic-treated poultry is established using this method. It is found that at the 2th – 7th days of treatment the markers of the cells functional status in the experimental group chickens are similar to those of poultry of the intact group.
Investigation of the reflection coefficients of apple skin when removing in the garden and during storage
Authors: Rodikov S A , Palfitov V F , Butenko A I 
Published: November 2020

Abstract
Antonovka apples, yellow and green, which were picked on August 25 and September 1 have been analyzed. The reflection coefficients of the apple surface were measured at wavelengths of 700 and 750 nm. R750 / R700 ratio was used to estimate the chlorophyll content in the skin. It is shown that the reflection coefficients decrease in storage with time. It is proved by the change in the structure of the apple tissue; the light is absorbed to a greater extent by it. The change in the content of chlorophyll in the skins of apples remains at the same level during the storage. There are some fluctuations in its content. It has been shown that fruit diversity increases with the storage time.
Special aspects in interference of in-phase and anti-phase waves with unequal phase velocities in coupled lines under pulse impact
Authors: Sychev A N , Malyutin N D , Trenkal E I , Malyutin G A 
Published: November 2020

Abstract
We considered the propagation of a short pulse in the picosecond range in coupled lines with a ratio of phase velocities of anti-phase and in-phase waves of 3:1. We showed experimentally a special aspect in the interference of in-phase and anti-phase waves in such structures, which leads to the input pulse separation between three ports without a significant energy loss associated with the reflection from the input. The wave interference was found to lead to a change in the directional properties of the structures under consideration and a separation of the pulse spectral components between the ports.
Effect of low intensity laser radiation on sugar content in sugar beet root crops obtained from seeds treated with a quantum generator
Authors: Brizhanskij L V , Brizhanskaya Yu A , Lasica A M , Dorohova A M 
Published: November 2020

Abstract
In the modern world the question of obtaining environmentally friendly food products with the best possible performance is increasingly raised not only in the scientific community but also among the citizens of cities and rural areas. There are many theories and experiments that prove the advantage of the chosen method of exposure to seeds and plants in order to obtain the best result of the final product. One of these areas is the influence of low-intensity laser radiation on plants and their seeds. This article examines the effect obtained from such an impact. And in particular, the authors are talking about increasing the sugar content of root crops obtained from sugar beet seeds treated with low-intensity laser radiation.
Research of the influence of ultrasonic oscillation on the drying of textile materials
Authors: Khmelev V N , Shalunov A V , Bochenkov A S , Nesterov V A , Terentiev S A , Tertishnikov P P 
Published: November 2020

Abstract
The article presents the results of experimental studies of the process of convective drying of textile materials under the influence of ultrasonic oscillation. Research is carried out in a drum type dryer (based on LG household dryer) at different drying air temperatures. Were subjected to drying: cotton fabric, polyester and synthetic fluff. The drying process was carried out without ultrasonic exposure and with ultrasonic exposure at a sound pressure level of about 150 dB. The efficiency of ultrasonic exposure on textile materials at the initial stage of drying is shown. It has been found that ultrasonic exposure provides: for cotton fabric, increasing the drying rate to 12–14 % / min at the initial stage of drying; for polyester, increasing the drying rate by 65 % / min at a moisture content of 0.9–1.0; for synthetic fluff, the drying time is reduced by 33–37 %, with increasing the drying rate up to 30 % / min at the initial stage of drying. Thus, it been shown that it is advisable to apply ultrasonic exposure to increase the efficiency of drying textile materials, especially synthetic ones.
Ultrasonic monitoring of early development of lower vertebrate embryos
Authors: Burlakov A B , Titov S A , Bogachenkov A N 
Published: November 2020

AbstractIn this paper, the scanning acoustic microscope is used for visualization of the lower vertebrate embryosin vivo. Compared to optical methods, high frequency ultrasonic imaging has a negligible effect on a developing organism, and chemical treatment of biological object is not required due to the high contrast of acoustic images and the deep penetration of ultrasound. A technique for continuous ultrasonic observation of a living embryo that grows in the immersion cell of the acoustic microscope is proposed and developed. Using this technique, it is possible to image the internal organs of the embryo, visualize the motion of the structural elements and estimate their velocity. The loach embryo (Misgurnus fossilis) at 11-12 stages of development was studied using the experimental setup based on the 50 MHz scanning acoustic microscope. The ultrasonic images of the yolk and blastula, animation of cell division and motion in the syncytial region and estimation of the velocity of the structural elements of the embryo were obtained by the developed method.
Investigation of parameters of Schottky diodes based on chromium silicides
Authors: Isaev M Sh , Gaibov A G , Eshkulov A A 
Published: November 2020

Abstract
In this work, the parameters of Schottky diodes obtained by sputtering chromium on silicon and annealed at 900÷1100°C. were investigated. Experimental studies of Schottky contacts based on silicides have an all-microscopic analysis of the physical and chemical properties of the layers and an analysis of the electrical behavior of the system. The Schottky model assumes that surface states are located on the border between the transition layer and silicon. Using measurements of direct and inverse volt-amperage characteristics (VAC), values of the height of the effective Schottky barrier, the rate of change in the height of the barrier, as well as the value of the density of surface states, the thickness of the transition layer were obtained and the tunneling process was considered. The temperature dependencies of electrical conductivity are given and the course of the curve is analyzed. The obtained VAC is explained by the model of thermionic emission of the Schottky theory. Height of a barrier to contact chrome-silicon silicide which is equal to 0.65 eV is determined, and the factor of ideality was close to unit. The number of steps required by the charge carriers to overcome the potential barrier is determined. It is described that the current transfer mechanism is associated with the presence of surface states at the interface, as well as the occurrence of lattice mismatch and the difference in thermal coefficients. Diode illumination by LED confirms the effect of surface states on VAC. An increase in the surface states of photogenerated holes is shown. It has been shown that the existence of surface states affects the change in the height of the potential barrier, the amount of bending of the zones, and also determines that the predominant transfer mechanism is a tunneling multistage mechanism.
Models of temperature fields and their influence on polymeric coating adhesion
Authors: Bondar K E , Laponov S V , Suleymanov D F , Shulaev N S 
Published: November 2020

Abstract
The article provides the results of the research into the high-frequency electromagnetic radiation influence on polyvinyl chloride based polymeric piping coatings as well as forecasting how radiation can affect adhesion. It also exhibits the improvement of materials efficiency leading to longer service and higher reliability of piping systems. A calculation method for temperature changes and distribution across the coated material under the influence of microwave radiation has been developed which is required to establish the most appropriate polymer treatment techniques.
Laue photographs for NaCl and LiF
Authors: Bamatov D M , Bamatov I M , Daudov I L 
Published: November 2020

Abstract
The aim of the work was to investigate the x-ray scattering from the crystal lattice planes and the reason why this interaction forms distinctive diffraction patterns in the crystals. An experiment was designed in order to take the Laue photographs of the diffraction patterns of two selected crystals NaCl and LiF. The experiments allowed to observe a direct critical link between the internal structure of the crystals and the reciprocal lattice. The work allowed to obtain an energy spectrum for gold with clearly visible L shell emission lines and two Laue Photographs of the following crystals NaCl and LiF were obtained accordingly.
Multispectral matrix silicon photodetectors with the IR range registration
Authors: Zhbanova V L , Parvulyusov Yu B , Solomatin V A 
Published: November 2020

Abstract
The paper presents a multi-layer digital camera matrix photodetectors modifications. Modifications are a matrix photodetectors two main types hybrid: spatial structure and multilayer. The matrix photodetectors issue current state with the registering images function in both the visible and IR range is considered in detail. Such well-known manufacturers photo matrices analysis is carried out. To obtain a multispectral image, it is proposed to introduce light-sensitive layers for the near and mid-IR ranges. The developed matrices patterns are presented that allow achieving a balance of each of the five channels (red, green, blue, near and mid-IR) so that the spectrum each selected range has the matrix surface equal share. A layers’ combination is also proposed that allows to apply them separately-a layer that will minimize the noise in this area and focus on the infrared region, and use the visible one as an auxiliary one. At the same time, to get a full-fledged image, you need to apply each pixel interpolation. The light-sensitive layers’ distribution principle in each pattern is described.
Internal resistance of batteries for storing electrical power harvested using piezoelectric nanogenerators
Authors: Bamatov D M , Bamatov I M , Daudov I L 
Published: November 2020

Abstract
The dependence of power transfer through a circuit on the internal resistance selected batteries. A practical way for calculating the battery property was suggested and using the method, the values for “internal resistance, power output, changes in the voltage and current” with the change in the loaded resistance were calculated for the three selected batteries with the purpose to store the electrical power harvested using piezoelectric nanogenerators. The results obtained showed that for the “Carbon Zinc” battery the internal resistance was of value of 0. 31 Ohms, for the “Motorbike battery” it was 0.82 Ohms, and for the “Green Cell” battery the value was the highest, reaching 12.02 Ohms. The results obtained inverse proportionality between internal resistance and power transfer and as a consequence, the power stored by the battery relative to its capacitance was affected.
Exploring the role of progressive web applications in modern web development
Authors: Magomadov V S 
Published: November 2020

Abstract
This paper explores such a Web development technology as Progressive Web Applications. It is explained what this technology is and the purpose of it. The paper also compares progressive web applications to other Web technologies that are closely related to them, such as responsive websites and native applications. It highlights the most important differences and similarities between them. Furthermore, the paper discusses the advantages as well as the possible limitations of this technology. Finally, it provides some thoughts on whether or not this technology is the best solution for the online presence of a business.