bluuebunny/crossref_metadata_2025 huggingface dataset:
High‐power and low‐profile metamaterials for reflectarray based on ‐negative layer in X‐band
Authors: Ma Xiao , Yang Feng , Yang Peng , Wang Rui , Yan Yi
Published: December 2019

The low‐profile reflectarray is proposed in this Letter based on the ‐negative metamaterial, whose units are mainly designed as two types for aperture phase‐tuning. A tri‐layer structure is investigated, which is composed of a ‐negative metamaterial sandwiched by two identical high‐ dielectric slabs, and features characteristics of high power capacity, energy tunnelling and robustness against the incident angle of the electromagnetic wave. The simulation and experiment sufficiently demonstrated that the structure obtains high transparency rate at a relative bandwidth of 30, as well as a 1‐bit phase shift of 0 and 180 is achieved, which makes it potentially high‐power microwave spatial phase shifter and the linear‐polarisation radiator for reflectarray.
Like a spider in its web: a study of the large-scale structure around the Coma cluster
Authors: Malavasi Nicola , Aghanim Nabila , Tanimura Hideki , Bonjean Victor , Douspis Marian
Published: December 2019

The Cosmic Web is a complex network of filaments, walls, and voids that represent the largest structures in the Universe. In this network, which is the direct result of structure formation, galaxy clusters occupy central positions that form the nodes and these are connected by filaments. In this work, we investigate the position in the Cosmic Web of one of the most well-known and best-studied clusters of galaxies, the Coma cluster. We make use of the Sloan Digital Sky Survey Data Release 7 Main Galaxy Sample and of the Discrete Persistent Structure Extractor to detect large-scale filaments around the Coma cluster and analyse the properties of the Cosmic Web. We study the network of filaments around Coma in a region of 75 Mpc in radius. We find that the Coma cluster has a median connectivity of 2.5, in agreement with measurements from clusters of similar mass in the literature as well as with what is expected from numerical simulations. Coma is indeed connected to three secure filaments which connect it to Abell 1367 and to several other clusters in the field. The location of these filaments in the vicinity of Coma is consistent with features detected in the X-ray, as well as the likely direction of infall of galaxies, such as for example NGC 4839. The overall picture that emerges of the Coma cluster is that of a highly connected structure occupying a central position as a dense node of the Cosmic Web. We also find a tentative detection, at 2.1σ significance, of the filaments in the SZ signal.
A census of the pulsar population observed with the international LOFAR station FR606 at low frequencies (25–80 MHz)
Authors: Bondonneau L. , Grießmeier J.-M. , Theureau G. , Bilous A. V. , Kondratiev V. I. , Serylak M. , Keith M. J. , Lyne A. G.
Published: December 2019

Context. To date, only 69 pulsars have been identified with a detected pulsed radio emission below 100 MHz. A LOFAR-core LBA census and a dedicated campaign with the Nançay LOFAR station in stand-alone mode were carried out in the years 2014–2017 in order to extend the known population in this frequency range.

Aims. In this paper, we aim to extend the sample of known radio pulsars at low frequencies and to produce a catalogue in the frequency range of 25–80 MHz. This will allow future studies to probe the local Galactic pulsar population, in addition to helping explain their emission mechanism, better characterising the low-frequency turnover in their spectra, and obtaining new information about the interstellar medium through the study of dispersion, scattering, and scintillation.

Methods. We observed 102 pulsars that are known to emit radio pulses below 200 MHz and with declination above −30°. We used the Low Band Antennas (LBA) of the LOw Frequency ARray (LOFAR) international station FR606 at the Nançay Radio Observatory in stand-alone mode, recording data between 25 and 80 MHz.

Results. Out of our sample of 102 pulsars, we detected 64. We confirmed the existence of ten pulsars detected below 100 MHz by the LOFAR LBA census for the first time (Bilous et al. 2020, A&A, 635, A75) and we added two more pulsars that had never before been detected in this frequency range. We provided average pulse profiles, DM values, and mean flux densities (or upper limits in the case of non-detections). The comparison with previously published results allows us to identify a hitherto unknown spectral turnover for five pulsars, confirming the expectation that spectral turnovers are a widespread phenomenon.
Sustained Improvement in Inflammatory Bowel Disease Quality Measures Using an Electronic Health Record Intervention
Authors: Bensinger Andrew , Wilson Farra , Green Patrick , Bloomfeld Richard , Dharod Ajay
Published: December 2019

Background Inflammatory bowel disease (IBD) is a chronic condition with wide variation in treatment and resource utilization because of many different disease presentations and treatment options. In an effort to standardize care and improve health outcomes, several organizations have created performance measures to monitor various aspects of IBD care.

Objectives We aimed to assess longitudinal documentation adherence with physician quality reporting system's (PQRS) IBD performance measures before, immediately after, and 1 year following the implementation of a comprehensive electronic health record (EHR) IBD clinical documentation support tool intervention.

Methods We reviewed 50 patient charts that were randomly selected from consecutive outpatient IBD visits at our tertiary care center from September 1, 2015 to June 30, 2016, prior to implementation of an IBD-specific note template, order set, and patient education handout on September 1, 2016. Two additional cohorts of 50 patient charts were randomly selected from September 1, 2016 to June 30, 2017 and September 1, 2017 to June 30, 2018. These charts were reviewed to assess adherence of pertinent PQRS performance measures for outpatient IBD care. The project was deemed not human subjects research and received exempt approval by the Institutional Review Board (IRB#: IRB00040399).

Results The cohort immediately after the intervention showed significant increases in documentation rates of influenza immunization (19–59%, p < 0.001), pneumococcal immunizations (2–38%, p < 0.001), tobacco cessation (28.6–77.8%, p = 0.049), and proportion of all eligible measures (40.6–62.2%, p < 0.001) when compared with the preintervention group. Moreover, documentation rates were sustained in the 1-year follow-up group when compared with the postintervention group.

Conclusion A multifaceted, EHR focused approach can significantly and sustainably improve documentation of outpatient IBD quality measures.
Real-time out-of-plane displacement measurement using displacement compensation
Authors: Hu Wenxin , Xiong Chen , Xu Jingchao , Li Wei , Miao Hong
Published: December 2019

To determine out-of-plane displacement, it is challenging to simultaneously implement high resolution, wide range, and real-time measurement. This study proposes a method for displacement compensation based on the Michelson single-point displacement measurement system. The direction of fringe movement and amplitude of the object’s displacement was calculated and converted into a feedback-tracking signal. The compensator was driven by the feedback signal to change the reference optical path to keep the fringes stable, and a method to detect fringe movement was developed. A convolutional neural network model was set to distinguish the direction of fringe movement, and a backpropagation neural network was used to calculate the amplitude of the movement using simple image processing at a high speed. The system’s resolution was 10 nm in the range 210 µm, and the tracking time step was smaller than 200 ms. This provides an effective solution for high precision, real-time, and wide range measurement.
Influence of LiNbO3 crystallization on the optical, dielectric and nanoindentation properties of the 30SiO2–35Li2O–35Nb2O5 glass
Authors: Singh Gurpreet , Sharma Moolchand , Vaish Rahul
Published: December 2019

The glass of 30SiO2–35Li2O–35Nb2O5 (mol. %) composition was fabricated by using the melt-quenching technique. Three different heat-treatments were provided at 650 °C for 3, 4, and 6 h soaking time in order to control LiNbO3 crystallization. The presence of LiNbO3 crystals was confirmed using X-ray diffraction and Raman spectroscopy techniques. The optical study showed a decrease in transparency from 80% to 40% at 600 nm wavelength with an increase in LiNbO3 crystallization. Moreover, the blue shift was observed in the absorbance edge position and the bandgap was increased from 2.73 to 3.06 eV with an increase in LiNbO3 crystallization. The moderate dielectric constant (∼27–31) along with very low dielectric loss (∼0.008–0.06) was achieved at 1000 kHz and 30 °C in the case of LiNbO3 crystallized glass ceramics during the dielectric study. Moreover, the dc conductivity was found to decrease with the increase in LiNbO3 crystallization. During the nanoindentation study, the increasing trend was observed in hardness (∼7–11 GPa) and reduced modulus of elasticity (∼125–160 GPa) values with the increase in LiNbO3 crystallization. The glass ceramic heat-treated for 3 h could be used for nonlinear optical and other optical applications due to its adequate transparency and promising dielectric and mechanical properties.
A microfluidic mammary gland coculture model using parallel 3D lumens for studying epithelial-endothelial migration in breast cancer
Authors: Devadas Deepika , Moore Thomas A. , Walji Noosheen , Young Edmond W. K.
Published: December 2019

In breast cancer development, crosstalk between mammary epithelial cells and neighboring vascular endothelial cells is critical to understanding tumor progression and metastasis, but the mechanisms of this dynamic interplay are not fully understood. Current cell culture platforms do not accurately recapitulate the 3D luminal architecture of mammary gland elements. Here, we present the development of an accessible and scalable microfluidic coculture system that incorporates two parallel 3D luminal structures that mimic vascular endothelial and mammary epithelial cell layers, respectively. This parallel 3D lumen configuration allows investigation of endothelial-epithelial crosstalk and its effects of the comigration of endothelial and epithelial cells into microscale migration ports located between the parallel lumens. We describe the development and application of our platform, demonstrate generation of 3D luminal cell layers for endothelial cells and three different breast cancer cell lines, and quantify their migration profiles based on number of migrated cells, area coverage by migrated cells, and distance traveled by individual migrating cells into the migration ports. Our system enables analysis at the single-cell level, allows simultaneous monitoring of endothelial and epithelial cell migration within a 3D extracellular matrix, and has potential for applications in basic research on cellular crosstalk as well as drug development.
High-power single mode GaSb-based 2 μm superluminescent diode with double-pass gain
Authors: Zia Nouman , Viheriälä Jukka , Koivusalo Eero , Guina Mircea
Published: December 2019

We report a broadband superluminescent diode operating around a 2 μm wavelength, optimized for high-power broadband operation. The high power operation is achieved by using a GaInSb/AlGaAsSb heterostructure positioned in a ridge waveguide with a J-shaped layout to form a double-pass geometry. To avoid lasing at high current while enabling high gain, a cavity suppression element is used. This combination allows demonstration of an output power as high as 120 mW for continuous-wave (CW) operation at room temperature, with a spectral full width at half maximum of about 43 nm. The maximum power spectral density was measured to be 1.8 mW/nm, which is about a fourfold increase compared to the state-of-the-art results for this wavelength range. To avoid heating, the diode was also driven with low duty-cycle current pulses; in this case, a peak power of more than 300 mW was achieved without any sign of roll-over (power was limited by the current injected). For CW operation, the central emission wavelength could be tuned by current injection between 1900 nm at 200 mA and 2027 nm at 2000 mA. Devices produce a Gaussian output beam that is suitable for coupling to single mode waveguides.
Interface-confined triangular FeOx nanoclusters on Pt(111)
Authors: Zhou Zhiwen , Liu Ping , Yang Fan , Bao Xinhe
Published: December 2019

Under the oxidizing condition, the cheap metal component of bimetallic catalysts often segregates to the surface and forms oxide nanoclusters (NCs) supported on the metal surface, which exhibit unique structures and catalytic properties drastically different from the corresponding bulk materials. Here, density functional theory calculations are employed to describe the atomic and electronic structures of a series of triangular FeOx NCs confined on Pt(111) with the size ranging from ∼0.3 nm to ∼2.2 nm, which behave differently from the FeO film reported previously. The lattice of supported FeOx NCs on Pt(111) is found to vary not only with the NC size but also with the Fe/O ratio or the edge termination. Owing to a strong FeOx–Pt interaction, the heterogeneous distribution of local atomic and electronic structures of Fe across the FeOx NC is observed, though most of Fe atoms are positioned at the threefold hollow site of Pt(111). Our study not only sheds light on the catalytically active sites of supported FeOx NCs but also provides guidance for the design of highly active and stable oxide nanocatalysts under reactive environment.
Understanding how cavities collapse in non-Newtonian fluids
Authors: Bandari Anashe
Published: December 2019

A number of important fluids exhibit non-Newtonian behavior, but the dynamics of contracting cavities in these fluids have not been fully studied.
Population decline of the noisy scrub-bird is not correlated with territory size, marginal declines in rainfall or fire impacts
Authors: Roberts J. Dale , Danks Alan , Berryman Abby , Sidhu Nadisha , Burbidge Allan H. , Comer Sarah
Published: December 2019

The noisy scrub-bird is endangered and confined to one natural population on Mount Gardner and several translocated populations east of Albany, Western Australia. Annual monitoring of the number of singing males at Mount Gardner since 1966 indicates a steady rise in numbers, peaking at 179 birds in 1994 followed by a less regular decline to 19 by 2017. The Lakes, an adjacent location, had a similar pattern of increase from the early 1970s then irregular decline from the mid-1980s. Broken stick regression models confirmed that both apparent patterns represented significant increase then decline in the number of singing males. Territory size estimates from 1994, 2005 and 2014 suggest an increase in size of territories over time but that pattern was not significant when only common territories were compared. Variance in bird numbers was not correlated with annual rainfall, which has broadly declined over the study period, or with number of rain days. We discuss five possible causes of decline: (1) inbreeding, (2) control of exotic predators and associated impact on non-target, natural predators, (3) resource/food availability (which may interact with rainfall), (4) removal of birds for introduction programs, and (5) the absence of wildfire and associated changes (senescence) in vegetation. None are compelling, single explanations for decline but their collective impact may be high. Survival of the noisy scrub-bird may be increasingly dependent on the introduced, managed populations of this species at Mount Manypeaks and on Bald Island.
Nonlinear diffusion and hyperuniformity from Poisson representation in systems with interaction mediated dynamics
Authors: Bertrand Thibault , Chatenay Didier , Voituriez Raphaël
Published: December 2019

We introduce a minimal model of interacting particles relying on conservation of the number of particles and interactions respecting conservation of the center of mass. The dynamics in our model is directly amenable to simple pairwise interactions between particles leading to particle displacements, ensues from this what we call interaction mediated dynamics. Inspired by binary reaction kinetics-like rules, we model systems of interacting agents activated upon pairwise contact. Using Poisson representations, our model is amenable to an exact nonlinear stochastic differential equation. We derive analytically its hydrodynamic limit, which turns out to be a nonlinear diffusion equation of porous medium type valid even far from steady state. We obtain exact self-similar solutions with subdiffusive scaling and compact support. The nonequilibrium steady state of our model in the dense phase displays hyperuniformity which we are able to predict from our analytical approach. We reinterpret hyperuniformity as stemming from correlations in particles displacements induced by the conservation of center of mass. Although quite simplistic, this model could in principle be realized experimentally at different scales by active particles systems.
Topological spinor vortex matter on spherical surface induced by non-Abelian spin-orbital-angular-momentum coupling
Authors: Cheng Jia-Ming , Gong Ming , Guo Guang-Can , Zhou Zheng-Wei , Zhou Xiang-Fa
Published: December 2019

We propose a scheme to implement non-Abelian spin-orbital-angular-momentum (SOAM) coupling in spinor Bose–Einstein condensates using magnetic gradient coupling. For a spherical surface trap addressable using high-order Hermite–Gaussian beams, we show that this system supports various degenerate ground states carrying different total angular momenta J, and the degeneracy can be tuned by changing the strength of SOAM coupling. For spinor condensates with hyperfine spin F = 1, the system supports various meta-ferromagnetic phases and meta-polar states always described by quantized total mean angular momentum

∣
〈
J
〉
∣

in case of weak interactions. Polar states with Z
2 symmetry and Thomson lattices formed by defects of spin vortices are also discussed. The system can be used to prepare various stable spin vortex states with nontrivial topology, and serve as a platform to investigate strong-correlated physics of neutral atoms with tunable ground-state degeneracy.
The Newton problem solution of the transformed complex curve parameters
Authors: Lozhkin Alexander , Korobeynikov Alexander , Khaziyakhmetov Ruslan
Published: December 2019

Many tasks from the natural and engineering sciences require precision solutions with complex curves. The main obstacle is the lack of the necessary mathematical apparatus. The analysis of symmetries on the Euclidean plane by Dieudonne and the figure by Weyl allowed us to formulate a new method for obtaining the parameters of linear transformation alternative to classical. It can be used for an ellipse, hyperbola, as well as complex flat curves. The method is analyzed for trajectories having symmetries. A theorem to obtain the parameters of the transformed curve in the general case is formulated. Theoretical calculations and the results of experimental studies using the method of geometric modeling are given. The method is very new, so it may not work for some curves. There is the possibility of obtaining it, since the research uses the simplest apparatus.
Information-measuring methods for controlling physical parameters as information system building element
Authors: Kustov A I , Sklyarov V A
Published: December 2019

A method for measuring the parameters of photostimulated processes in an ion-covalent crystal is considered. An information measurement model for AgCl and CdS:Ag crystals was built. A correlation-regression model for describing the process of cluster formation in luminescent crystals was developed. An algorithm for using the information-measuring model as part of the information-measuring complex for controlling technological processes by the method of photostimulated luminescent flash is presented.
Physicochemical properties of titanium nitride electric arc powder
Authors: Karpov I V , Ushakov A V , Shaikhadinov A A , Demin V G
Published: December 2019

Physicochemical properties of polymeric materials nano modifier on the basis of a titanium nitride powder synthesized at arc sputtering of the titan in a low pressure gas mix of nitrogen and an argon of are studied. It is shown, that particles have a nanometre size and a narrow grain size distribution. The questions connected with oxidation and recrystallization are discussed.
Lamp pumped LiSrAlF6: Cr laser with Bragg grating
Authors: Popov E E , Sergeev A A , Pogoda A P , Boreysho A S
Published: December 2019

The paper presents LiSrAlF6: Cr lamp-pumped laser. The possibility of tuning the central radiation wavelength in the range of 795-895 nm is shown. The passive Q-switching mode was provided by a saturable LiF: F2-absorber with an initial transmission of about 72%. In the single-pulse generation mode with a duration of 100 ns, the pulse energy was 3 mJ with a spectral width of 45 pm. The fundamental possibility of operating in the generation mode of two spectral components for the range of 865-885 nm is shown.
Study of the processes of cleaning biological and chemical substances from implants of biological origin using supercritical CO2
Authors: Kuznetsova I V , Sandugey N S , Gilmutdinov I M , Gilmutdinov I I , Sabirzyanov A N
Published: December 2019

Chemical reagents used in standard technologies are significantly inferior in effectiveness to their intended use in the purification of a biological matrix by supercritical carbon dioxide due to several reasons: retention of residual solvent in the structure of the biological matrix, the presence of pronounced cytotoxicity, problems associated with capillary effects (limited penetration of the reagent to the cleaned surface), pronounced allergenicity of chemical reagents. Laboratory studies of the influence of pressure processing from 20 to 35 MPa of a two-stage bone matrix cleaning process at a holding temperature of 308, 313 K to the 60-minute static processing time and the 240-minute dynamic processing time were carried out, including subsequent biochemical analyzes to determine residual DNA, calcium protein in the obtained samples. The addition of a cosolvent - ethanol in an amount of 5% of the main solvent of supercritical CO2 was studied. Pyrogenic testing was carried out. All samples are recognized not pyrogenic. Physical properties and surface morphology were determined using a Carl Zeiss AURIGA CrossBeam scanning electron microscope. Identification and quantification of potential degradation products using liquid chromatography was determined.
Method of increasing the objectivity of empirical research
Authors: Galiahmetova D N , Feoktistova O A , Shchenikov Ya A
Published: December 2019

The article describes types of cognitive distortions that can affect objectivity of empirical research and empirical data obtained. A self-assessment method for evaluating the experiment objectivity is presented, which can be used to self-assess the objectivity of empirical research. The developed method uses checklists at some stages of empirical research and allows reducing the research subjectivity by minimizing cognitive distortions that may arise due to deviations in the research or defects in the methods used.
The non-capacitor model of leaky integrate-and-fire VO2 neuron with the thermal mechanism of the membrane potential
Authors: Velichko A A , Belyaev M A , Ryabokon D V , Khanin S D
Published: December 2019

The study presents a numerical model of leaky integrate-and-fire neuron created on the basis of VO2 switch. The analogue of the membrane potential in the model is the temperature of the switch channel, and the action potential from neighbouring neurons propagates along the substrate in the form of thermal pulses. We simulated the operation of three neurons and demonstrated that the total effect happens due to interference of thermal waves in the region of the neuron switching channel. The thermal mechanism of the threshold function operates due to the effect of electrical switching, and the magnitude (temperature) of the threshold can vary by external voltage. The neuron circuit does not contain capacitor, making it possible to produce a network with a high density of components, and has the potential for 3D integration due to the thermal mechanism of neurons interaction.
Influence of the digital data representation error in the linear control contour of a pulse voltage stabilizer
Authors: Titovskii S N , Titovskaia N V , Titovskaya T S
Published: December 2019

This article assesses the influence of the error in the data representation in the control contour, arising from their limited capacity, on the output voltage of a pulse voltage stabilizer. Also, in this article, an assessment is made for the linear control law. The experimental results of the study of the influence of bit depth analog-to-digital conversion on the stabilizer operation are presented.
Electromagnetic compatibility of receivers in the power supply system with induction heating units
Authors: Gunin E A , Petukhov R A , Sizganova E Yu , Filatov A N , Yuzhannikov A Yu
Published: December 2019

The problem of electromagnetic compatibility of users that have a mutual supply center is examined. On the basis of field studies, the levels of higher harmonic components of current and voltage were determined at an operating steel plant with induction heating electrical installations. Simulation model of steel plant with electrical installations of induction heating is presented, which includes controlled filter-compensating devices and fuzzy logic controller, for which product rules of fuzzy interference are formulated. It is shown that the use of a fuzzy logic controller allows limiting the level of higher harmonics of current and voltage during operation of the induction furnace.
Chemical method of creation of effective Ni63 radiation source for betavoltaic converters
Authors: Lelekov A T , Evsevskaya N P , Kovalev I V , Zelenkov P V , Brezitskaya V V
Published: December 2019

The article highlights the results of studying the parameters of nickel film chemical deposition on base aluminium foil, the purpose of which is to create an effective source of beta radiation Ni63 source for a betavoltaic converter. To increase the specific area of the source, it is proposed to micro-corrugate the base by rolling and laser fusion. Recommendations on the practical implementation of the source manufacturing are given.
Approaches to find vulnerabilities and security in the digital production networks
Authors: Parfenov Denis , Zabrodina Lubov , Torchin Vadim , Parfenov Anton
Published: December 2019

Currently, the problem of ensuring cybersecurity of the network and information infrastructure of critical facilities is relevant. A special place in this is security automated control systems, which are the basis of industry 4.0. At the same time, the main source of threats to such systems is the external network of the telecommunications service provider, through which the operation of remote objects and systems is monitored. In the framework of this study, an approach was developed to search for abnormal behavior in the networks of telecommunication service providers, based on an analysis of events in the logs of various systems, including those responsible for network security. The proposed approach is the development of an information and event management system.
Analysis of the upper bound of error correction time for the data protection with the use of the Reed-Solomon codes
Authors: Rahman P A , Bolnokin V E
Published: December 2019

This scientific paper deals with the error-correcting coding for the data protection and analysis of the upper bound of error correction time on application of the Reed-Solomon codes. The data encoding and decoding algorithms for the Reed-Solomon codes are briefly overviewed. The obtained by the author analytical formula for estimation of the upper bound of error correction time for the given size of data frames and multiplicity of correctable errors is presented. Finally, results of the experimental research of frame decoding and error correction time are also discussed.
An algorithm for selection of the multiplicity of correctable errors for the data protection on application of the Reed-Solomon codes
Authors: Rahman P A , Bolnokin V E
Published: December 2019

Within the scope of this scientific paper the probability analysis of unrecoverable data corruption in the data transmission systems and data protection on application of the Reed-Solomon codes are discussed. An offered by the author algorithm for selection of the multiplicity of correctable errors for the given bit error probability, fixed size of data frames, minimum required size for the user data and maximum acceptable probability of unrecoverable data corruption on application of the Reed-Solomon codes is also given. Finally, results of the experimental research of the probability of unrecoverable data corruption and example of selection of the multiplicity of correctable errors are also provided.
The question simulation of internet data exchange, according the features of functioning the hybrid content delivery networks
Authors: Filimonov P A , Izotova T Y , Gorelik S S , Eskov S S , Mutin D I
Published: December 2019

The article deals with an approach to modelling request routing and resource management processes of content-oriented services, based on the concept of hybrid content delivery networks. Proposed approaches to the formation characteristics of the Internet data exchange model in the framework of solving the problem efficiency increasing of the functioning information monitoring systems.
Cluster analysis and development of the intellectual cancer monitoring system based on data of the Federal Penitentiary Service of Russia
Authors: Ponomarev S B , Burt A A , Dyuzheva E V , Polishchuk V E , Ponomarev D S
Published: December 2019

The article considers the possibilities of using cluster analysis and modeling of cancer monitoring in inmates. The article presents the analysis based on the hierarchical clustering, the k-means method along with F-test criterion for the main indicators monitored in the penitentiary system. The application of modeling was analyzed using the example of regression analysis of the data. The development of the model was relative to the indicator of the proportion of mortality rate to the total number of malignant neoplasms. According to the statistic data of 2018, the main statistical indicators on oncopathology in inmates reflect a similar situation in the whole country. The researchers consider the possibility to apply the results obtained not only within the penitentiary system, but also to monitor the situation with cancer in the country in general.
Commercial software engineering under the digital economy concept
Authors: Borisoglebskaya L N , Provotorova E N , Sergeev S M
Published: December 2019

The counterparties’ economic relations have been mainly transferred to the online sector. This reflects the concept of digital interaction between manufacturers, intermediaries and consumers. At the software engineering stage, it is necessary to use one of the main formalisms - sales funnel, which has transformed into a conversion funnel under the concept of a digital economy. In the presented article, a mathematical model is developed that formalizes in detail all the stages of commercial interaction. The research results provide a set of software engineering algorithms for the expert systems designed for commercial services managers.
Information technologies in the study of the implementing complex logic functions possibilities
Authors: Zaslavskaya O Yu , Zaslavskiy A A , Bolnokin V E
Published: December 2019

In the article approaches of acquaintance of students of pedagogical high school with the information technologies, allowing to carry out multifactor research of logic elements of modern digital computers are considered. Description of stages and results of research of possibilities of realization of difficult logic functions by means of the basic logic elements executed on integrated circuits with potential representation of the information is resulted. The course of research on the basis of the Electronic Workbench training electronic laboratory software, which allows to perform schematic modeling of digital and analogue radio electronic devices, is presented.
Features of the development of information systems for working with blockchain technology
Authors: Gorodnichev M G , Kukharenko E G , Salutina T U , Moseva M S , Kukharenko A M
Published: December 2019

This article is devoted to the development of an information system for conducting financial transactions on a cryptocurrency exchange based on blockchain technology. The paper provides a brief overview of the underlying technology, the advantages and disadvantages are identified, the design of the information system and user interface is carried out.
Use experience of collars with radio beacons of Argos satellite system produced by ES-PAS Ltd. for the study of reindeer Taimyr-Evenk population
Authors: Savchenko A P , Salman A L , Savchenko P A , Savchenko I A , Dubintsov S A , Muravyov A N
Published: December 2019

The use of reindeer resources in Central Siberia - the main welfare source for the majority of farms and the indigenous population of the North region. Protection and rational use of Taimyr-Evenk reindeer population inhabiting the Krasnoyarsk territory on the area of more than 1.5 million km2 are impossible without the use of modern remote sensing methods. It provides objective and live data information about the spatial and temporal location of animals at different stages of their life cycle. Monitoring carried out with the use of modern technical devices allows to solve not only applied control problems, but also to obtain new unique knowledge about the biology of this species. The basis for this message was the materials on the use of collars equipped with satellite transmitters of the Argos system and worn on deer. A total number of collars was 17, which were worn on reindeer in their wintering grounds, except for one, which a half-grown female was marked during the crossing of the Heta river. From a technical point of view, it was important to trace the total duration of the beacon and the viability of the battery packs in extreme temperature amplitude and also to establish reliability of the device protection from physical and mechanical influence during migrations of animals. The maximum duration of signal receipt with using the new battery packs in 2015-2016 amounted to 438 and 444 days, in 2017-2018 – 539 days. The maximum length of the deer during the satellite direction finding was 9538 km. The average speed was 13.5 km / day; the maximum was up to 45-72 km / day in azimuth. Used collars with radio beacons of Argos satellite system produced by ES-PAS Ltd. (Russia), showed a high degree of functional reliability.
An approach to the development of clustering algorithms with a combined use of the Variable Neighborhood Search and Greedy Heuristic Method
Authors: Orlov V I , Rozhnov I P , Kazakovtsev L A , Lapunova E V
Published: December 2019

Authors propose a new approach to the development of clustering algorithms based on parametric optimization models with the combined use of search algorithms with variable randomized neighborhoods and greedy agglomerative heuristic procedures.
Environmental engineering: regulation, monitoring, audit, innovation
Authors: Piskorskaya Svetlana Yu , Malanina Yulia N
Published: December 2019

The article deals with the formation of social engineering as a set of targeted actions in the field of environmental protection and use of natural resources. There are identified and analyzed the main components of environmental engineering: environmental regulation, environmental monitoring, environmental audit, environmental innovation, environmental programs and projects. The mechanisms of environmental engineering such as environmentally oriented investment and innovation projects and programs are identified. Their implementation will provide environmental, economic and social effects.
A fire safety control system of educational institutions
Authors: Morozov R V
Published: December 2019

The article describes the software system that allows to evaluate the state of fire safety of educational objects. The estimation is based on the analysis of the integral information on all factors influencing a condition of fire safety taking into account specificity of object. The value of fire risk is used as an evaluation indicator. It is calculated in accordance with the methodology approved by the Ministry of Emergency Situations. To facilitate the decision-making process, the system generates a set of recommendations for the decision-maker aimed at improving the level of fire safety of the object of education.
Auto-generation of the customer questions and their ranking in e-commerce system
Authors: Dyulicheva Yu Yu
Published: December 2019

The paper proposes the framework for auto-generation of the customer questions to help customers make choice of the best products based on their needs. The task of the optimal search organisation from millions of products is crucial for e-commerce systems. We propose the approach based on the following stages: the web-scraping stage of products reviews sites, pre-processing stage to detect key-phrases based on TextRank algorithm and POS-tagging, the subjective probabilities estimation stage to detect questions estimations and their ranking based on TextRank algorithm and Bayesian rule.
Organizational and economic mechanisms of state management of technological development of industrial companies
Authors: Beliakov G P , Ryzhaya A A , Shpak A S , Belyakov S A
Published: December 2019

The article defines the main instruments of state regulation of manufacturing companies’ technological development in leading industrial countries. Widespread measures of the state stimulation of the companies’ technological development in the developed countries have been highlighted. The experience of state regulation, support and stimulation of technological development of industrial companies in different countries has been considered.
The use of convolutional neural networks to identify artifacts of cells micrographs in biomedical research
Authors: Yakimov Anton , Morgun Andrey , Salmina Alla , Dorrer Mikhail , Tolmacheva Anna , Ogurtsov Dmitry
Published: December 2019

The work is devoted to the use of artificial neural networks to solve the problem of recognition and isolation of objects (cells) in digital micrographs used in the practice of microbiological research. This task is relevant due to a combination of two factors: a large amount of data (hundreds and thousands of photographs, hundreds of objects on each) arising from such studies, as well as the high complexity of manual image processing and the risk of operator errors. To solve the problem of recognition and separation of objects (cells) in digital biomedical micrographs, artificial convolutional neural networks are used. However, in most cases, the use of artificial neural networks requires selection of the network architecture and its training for each task individually. Each time when solving the problem of training the network, it is necessary to collect huge training samples, the more complex the more complex the architecture. The task of cell isolation was solved using a convolutional neural network. The neural network architecture of Mask R-CNN Facebook Research was used. We used a pretrained neural network, retrained in digital micrographs obtained and marked out by the authors. The solution is implemented in Python using TensorFlow, an open source machine learning software library developed by Google. As a result of testing the system, on the available data, the correctness of cell recognition in microphotographs was more than 95%, despite the small size of the digital images used. The applied approach definitely showed its efficiency on the available experimental data and has development prospects in the direction of increasing the size of processed images, increasing recognition accuracy, expanding the composition of secreted objects, working not only with cells, but also with structures in tissues.
Visualisation of a physical model of interacting of hard objects in a computer game
Authors: Soboleva E V , Kharunzheva E V
Published: December 2019

The problem of this research consists of relevant need to develop a physical model of interaction of hard objects, and herewith physical modelling of interaction of hard objects is often used in computer games. The purpose of this research is visualization of a physical model of interaction of hard objects in a computer game. Methodology of this research consists of analysing of domestic and foreign authors’ scientific researches: method of system-information analyse, method of mathematical and informational modelling: method of computer test. As a result of research the existing methods realizing collisions of objects in computer games are analyzed; the model of a game engine is developed. The algorithms in this model were visualised and tested. In conclusion, there are inferences, which confirm that dynamics of an absolute hard and deformabale agents, modelling of gas and liquid are basic part of any physical process.
Management and development of digital technologies in the electric power industry of Russia
Authors: Zimnukhova D I , Zubkova G A , Morkovkin D E , Stroev P V , Gibadullin A A
Published: December 2019

The article is devoted to the development of digital technologies in the electric power industry of Russia. It is proved in the work that in recent years the issues of the industry’s transition to a qualitatively new development path, which, according to the authors of the study, should be based on the introduction of digital technologies and smart grids in the electric power industry, have become relevant. The study presented the main advantages of the Smart Grid system, which are self-regulation of the electric power industry and maintaining stability and reliability in the long term. At the same time, it was revealed that the transition to digital technologies requires the industry to form a new asset and production unit management system related both to the superstructure and the creation of new energy complex management elements. At the same time, it is expected that the introduction of Smart Grid will increase the economic, environmental, social and technological effect both for the industry and for the national economy as a whole. At the end of the study, conclusions are drawn from the results of the work done.
On the possibility of creating a comprehensive system for rockburst prediction in mines and mining plants
Authors: Shaidurov G Ya , Kudinov D S , Kokhonkova E A
Published: December 2019

An analytical overview of the current state of the technology for monitoring safety and transmitting messages through the rock using electromagnetic and seismic waves is given. The paper describes the possibility of predicting mountain impacts based on the seismoelectric effect, which allows one to determine the time and place of gas accumulation. To increase the reliability of the forecast, it is advisable to create a comprehensive monitoring system that includes other modern monitoring methods.
Features of the investigation of crimes committed by persons controlling the debtor
Authors: Altman Yu O , Chervyakov M E , Karelin O I , Sochneva E N , Panfilov I A
Published: December 2019

Crimes in the field of bankruptcy of enterprises (organizations) are associated not only with the actions of the leadership, but also with the actions of those who control them, that is, arbitration managers. This necessitates the development and analysis of methods for investigating the crimes of these persons. For this purpose, it is necessary to highlight the signs of offenses and the corresponding penalties existing in the legislation. The analysis revealed the following signs of crime committed by persons controlling the debtor: the process of withdrawing property from economic management by the founder of the enterprise; lack of primary accounting documentation and acts of completion; improper performance of work; disappearance of the head of the controlled organization; failure by the person controlling the debtor to take preventive measures in a pre-bankrupt state; active withdrawal of liquid assets within 3 years preceding the bankruptcy procedure, etc. There may also be signs of fictitious and intentional bankruptcy. If proved, each of these signs is classified according to specific articles of the Criminal, Tax Codes or the Code of Administrative Offenses.
The study of the complex information systems structure on the coefficient of structural uncertainty basis
Authors: Alekseev V V , Yakovlev A V , Aminova F E , Sergeev M Ju
Published: December 2019

An approach to the analysis of the topological structure of a system on the basis of the coefficient of structural uncertainty, which allows to assess an ability to modify the structure and compare different topologies, is considered in this paper. The coefficient is defined by the number of transit and end vertices of a graph, which describes the system under consideration. The task is to find a system structure with the greatest value of the coefficient of structural uncertainty. The limits regarding information loss during destruction of one system element with a fixed number of elements is taken into account. The results of research on interelement communication recombination and a number of elements within a level of the hierarchy that both influence the structural uncertainty parameter are provided. A sensitivity analysis of the coefficient of structural uncertainty related to a transit vertex topology is carried out.
On the question of evolutionary algorithms application in tasks of criterion optimization
Authors: Lifar A S , Saramud M V , Losev V V , Kovalev I V
Published: December 2019

The factors affecting the activities of the aluminum industry like the supply interruptions of raw materials are described in the article. The article proposes the improvement of the optimal alternative routes and enterprise risk management system using the ant algorithm modification.
Application of modern machine translation systems in teaching foreign languages
Authors: Fibikh E V , Kuznetsova N V
Published: December 2019

The paper considers the concept of machine translation and its future trends in the modern world. It specifies types of modern translation systems and covers issues the humankind faces with them. It concludes that the future development of this industry is directly connected with the development of artificial intelligence.
Conceptual design of multifunctional hydrofoil vessel “Afalina”
Authors: Abbasov I B , Orekhov V V
Published: December 2019

The article is concerned with the conceptual modeling of multifunctional hydrofoil vessel “Afalina”. The review of analogs is represented and the basic characteristics of this type of vessels as well as their multitasking functionality are described. The search of lines is carried out on the basis of biological prototypes and the searching process is illustrated by the variants of rough drawings. The vessel drawings are designed on the basis of chosen rough drawing; the constructional features and ergonomics of different modifications are described. The methods and tools of three-dimensional computer modeling are selected; shading and rendering stages are represented. The settings of multifunctional hydrofoil vessel rendering are obtained in the course of engineering.