bluuebunny/crossref_metadata_2025 huggingface dataset:
Representation of data by their residual images during transmission and reception of messages in wireless information and telecommunication systems under interference conditions
Authors: Shiryaev A.A.
Published: October 2024

The article is devoted to the development of new methods used in information technologies for monitoring the results of telemetry in conditions of various types of interference, the need for which is most acute in the development of automated systems for monitoring the technical condition of complex complexes and systems. To resolve the contradictions, a new non-traditional approach is proposed that uses diagnostic methods for obtaining estimates of measurement results, the basis of which is the non-traditional representation of measurement data by their residual images during data transmission and reception in wireless information communications.
Main provisions of the concept of project ergonomics of automated information display systems
Authors: Terekhov V.I. , Skryl S.V. , Baldin A.V. , Goryachkin B.S. , Ivchenko D.D.
Published: October 2024

Automation of information technologies is developing at a rapid pace, the issue of effective interaction between man and machine is becoming increasingly significant and pressing. This paper examines the problem of designing automated control systems for special purposes based on a systems approach and design ergonomics. Investigate the information display subsystem in a special-purpose automated control system as a separate system, and also consider the influence of this subsystem on the efficiency of human-machine interaction. Particular attention is paid to the analysis of cognitive function and its significance for achieving the goals of functioning of the automated system under consideration. The conceptual foundations of the design ergonomics of automated information display systems are presented. The key stages of implementing the concept of design ergonomics of the above-mentioned systems are studied, including problem analysis, formulation of theoretical foundations, study of the effectiveness of interaction in the “man-machine” system and development of design technology. The developed concept of design ergonomics of automated information display systems can serve as a basis for the creation of more efficient control systems that provide improved interaction between man and machine, which helps to increase operator efficiency and improve the overall performance of automated control systems for special applications.
Model of phase fiber optic sensors
Authors: Minakov E.I. , Gublin A.S. , Shchetinin E.Y. , Prokopchina S.V.
Published: October 2024

Fiber-optic sensors today represent a dynamically developing industry of optoelectronics. The main advantages of measuring systems based on fiber-optic sensors include a wide range of measured values, high measurement accuracy, immunity of fiber sensors to electromagnetic radiation, fire safety, the possibility of remote and distributed measurements. Currently, in the process of designing optoelectronic devices, software modeling complexes are widely used, which make it possible to evaluate the characteristics of the devices being created. There are a number of software packages, for example optiwave optisystem, microwave office, which allow you to evaluate the directional properties of microwave structures and fiber optics, but these software environments are not designed for direct modeling of fiber devices as sensors, which causes a number of difficulties when using them. Thus, during the creation of the. In the conclusion, the main results of this work are highlighted, as well as an approach for solving such a problem, close to real conditions, is proposed.
Theoretical foundations for the development of a methodological apparatus for assessing the dynamics of information security threats
Authors: Skryl S.V. , Terekhov V.I. , Nikulin S.S. , Korchagin I.I. , Vladychenskaia V.A.
Published: October 2024

Continuous improvement by information security violators of ways and means of implementing threats to information security leads to the need for adequate improvement of information security technologies. The potential of violators and increased requirements for the security of information activities lead to the actualization of the problem of identifying threats to information security in the dynamics of the process of their implementation. Analyzing the existing level of elaboration of the issues of completeness of the assessment of information security threats in the dynamics of their implementation processes in the field of information protection, it is possible to identify grounds that do not allow us to characterize the currently developed methodological assessment apparatus as ensuring its completeness. The purpose of this work is to substantiate the possibility of increasing the completeness of the assessment of information security threats based on recognition methods. Statements have been formulated and formally proved, which should be considered as theoretical grounds for the development of a methodological apparatus for assessing the dynamics of information security threats. Such statements include: a statement about the completeness of the assessment of information security threats in the dynamics of their implementation; a statement about the structuring of the space of information security threat signs to identify the dynamics of its implementation; a statement about the possibilities of assessing the volume of information subject to the destructive effects of information security threats based on the characteristics of the space of impact signs; a statement about the possibilities of assessing the level of information security threat, in the dynamics of its manifestation based on the characteristics of the space of its features. Тhe methodological approach considered in the article allows us to formally assess, with the help of appropriate recognition algorithms, all possible circumstances related to the implementation of information security threats, ensuring high completeness of recognition of such threats in the dynamics of their
Feature of the forward error correction constructions for optical transport networks
Authors: Shishkin N.V. , Yurlov A.V. , Molchanov I.N. , Yudin V.O.
Published: October 2024

Due to the rapid increase of network traffic in the last few years, many telecommunication operators have started transitions to 100G optical networks and beyond. However, high speed optical networks need more efficient Forward Error Correction (FEC) codes to deal with the optical impairments. Forward error correction is widely used in optical communications to improve error correction and extend optical transmission distance. It is also used to reduce optical transmitter power and system costs. In response to the rapid growth of optical communications, the ITU-T has started researching FEC coding and has recommended ITU-T G.709 and G.975.1. As optical transmission systems evolve towards longer transmission distance, greater capacity, and speeds of 100G and beyond a variety of unwanted effects are seriously affecting smooth evolution. In optical transport network, FEC is getting more and more important as spectral efficiency is increasing. As 100G system is commercialized, there are some trends in the evolution of FEC, for example overhead is increased from 7% to 20% or even more. High-performance FEC codes are therefore being developed so that higher net coding gain (NCG) and better error correction can be achieved. The Optical Internetworking Forum (OIF) suggests that soft-decision forward-error correction (SD-FEC) with a redundancy of 20% and beyond be used in a 100G DWDM coherent system. The use of advanced modulation formats is a promising solution for attaining such high data rates in optical networks. However, as a signal constellation grows in size, so does the optical signal to signal-to-noise ratio it requires to achieve a certain bit error rate (BER). This will degrade the error correction capability. Decoding is moving from hard to soft. Vendors are developing their own advanced codes instead of using codes recommended by ITU-T. Because different application systems have different decoding performance, latency, power and cost requirements, FEC systems with various transmission overhead, implementation complexity, burst-error correction ability and error floor are available in today’s market. Soft-decision FEC often uses turbo product codes and low density parity check (LDPC) codes. In research area, new codes such as LDPC codes and their different varieties are introduced into optical communication. Optimized codeword structure and decoding algorithm that provides low BER. LDPC codes can be very powerful, but their practical implementation for optical communications links at ultra-high data rates remains a challenge since the decoding of the code requires soft-decision bits about the received bits. A family of structured codes known as quasi-cyclic LDPC codes, whose common structural properties can be exploited by unified encoding and decoding architectures to reduce the complexity in implementation.
A method for assessing the characteristics of the virtual machine migration process, taking into account the type of migrations and applications
Authors: Toutov A.V. , Taratukhin A.V. , Kerimov S.S.
Published: October 2024

Dynamic resource allocation in cloud computing is a critical aspect. It is necessary for computing resources scaling to maintain application performance, reduce costs and ensure the reliability of IT systems. Dynamic resource allocation is possible using open virtual machines (VM), but live migration is a relatively expensive and resource-intensive operation. A number of VM migration algorithms have been proposed, each with different performance characteristics depending on the state of the host system, network, and the VM workload. Recently, a large number of works have emerged that have developed models for assessing the effectiveness of of VM migration, but many of them do not provide a standard of satisfactory prediction accuracy and are built for a single migration algorithm, which limits the use of data models. This work uses a statistical approach to estimate the total migration time and VM downtime based on the approximation of probability densities by Gram-Charlier and Laguerre Series. The proposed method, in comparison with the known ones, allows one to answer the question of what is the probability of total migration time and VM downtime for a given migration type and VM application. The analysis of total migration time and VM downtime is based on the Virtual Machine Live Migration Dataset includes more than 40 000 virtual machine migration records with five different live migration algorithms: post-copy migration, pre-copy migration and its modifications: CPU throttling delta compression, and data compression. The dataset includes approximately 8000 migration records of each migration algorithm with 9 types of workloads. Analysis of the results allows us to conclude that the type of application significantly influences both the shape of the empirical distribution (histograms) of total migration time and its characteristics, therefore it is advisable to obtain an analytical expression for the distribution law of the total migration time and VM downtime taking into account these circumstances. The results of the experiments shows that this method does not depend on the migration algorithm and the type of working application. The use of the Laguerre series can be recommended as giving more reliable results compared to Gram-Charlier series. A method for estimating total migration time and VM downtime can be integrated into a management system to select the best monitoring window for servers and evaluate service-level agreement terms.
Instrumental and methodological support for the assessment and forecasting of knowledge in the pedagogical process
Authors: Cherepkov A.Yu. , Druzhinina O.V.
Published: October 2024

Currently, ensuring the process of assessing students' knowledge is associated with the development of adaptive instrumental and methodological support, which allows you to take into account and adjust the level of training of each student. Machine learning methods and artificial neural networks are widely used in solving problems of modeling and instrumental support of pedagogical processes. It should be noted that effective results can be obtained using multinomial logistic regression based on an integrated approach combining interactive testing and predictive modeling tools. The purpose of the article is to develop instrumental and methodological support for the assessment and forecasting of knowledge in the pedagogical process, taking into account the use of interactive testing algorithms and predictive modeling based on multinomial logistic regression. A software package has been developed to assess students' knowledge and predict academic performance in the educational process, which combines interactive testing tools with predictive modeling using multinomial logistic regression. For the development of the software package, the high-level Python language was used with the involvement of mathematical libraries. The aspects of the development of a support system for the course "Intelligent transport systems" in higher and additional education systems are considered. The obtained results can be used in solving problems of improving intellectual educational environments and in modeling pedagogical processes. In addition, the results can be used to analyze the effectiveness of teaching methods, identify trends and patterns in the educational process, as well as predict student academic performance.
Multistability of roller structures under parametric excitation of capillary waves in a square cell with a round protrusion in the center
Authors: Kiyashko S.V. , Afenchenko V.O. , Chernov V.V.
Published: October 2024

In nonlinear systems with instability, multistability often occurs. When studying processes occurring in real environments, the problem arises of finding paths leading to any state of equilibrium and searching for new stable states. In two-dimensional systems, they can consist of domains and differ in orientation in space. The goal of the work is to experimentally determine the features of the generation of multidomain structures in a two-dimensional system in the presence of complex boundaries of a liquid layer that experiences periodic vertical oscillations. The paper presents the results of an experimental study of the dynamics of roller domains of parametrically excited capillary waves in a square cell with a round insert in the center of the cell. In different domains, the rollers were oriented parallel and perpendicular to the boundaries of the cuvette and the boundaries of the circular insert. It was found that the dynamics of domains is determined by the movement of their fronts, and depending on the initial and boundary conditions, stable two-dimensional roller structures can appear at the edges of a square cell with a round protrusion in the center of the cell. In different domains, the rollers had different orientations. In this case, roundings with a large radius had the strongest effect on the dynamics of defects. Multistability of equilibrium states of roller structures was discovered, characterized by the fact that, with constant system parameters, various scenarios of domain competition arose, leading to 11 different stable equilibrium states, which differed in the number of domains, their shape and the presence of spatial symmetry. It turned out that during the occurrence of defects and the growth of domain walls, slow liquid flows arise near the boundaries of the cuvette and the circular insert. The rollers begin to move, and then a new stable equilibrium state is established in the form of a single domain containing one or two domain walls. It has been experimentally shown that the most stable equilibrium states of domains arise when the circular protrusion is symmetrically positioned relative to the sides of the cuvette. The results obtained may be of interest when studying the processes of establishing stable regimes in active media under strong competition and when studying the formation of two-dimensional structures from conducting particles capable of scattering electromagnetic waves.
Investigation of the stability of trajectories for three-dimensional nonlinear dynamic system using an accompanying coordinate reference
Authors: Masina O.N. , Druzhinina O.V. , Lisovsky E.V.
Published: October 2024

The development of methods of stability analysis and the study of various types of dynamic systems stability belongs to an urgent scientific direction. Among the problems solved in the framework of this direction, an important place is occupied by the problems of finding conditions for stability and stabilization in the sense of N.E. Zhukovsky of trajectories of dynamic systems modeled by systems of three nonlinear differential equations of the first order. The aim of the work is to study the stability in the Zhukovsky sense of the trajectories of a dynamic system described by three autonomous nonlinear first-order differential equations using a differential geometric method called the accompanying coordinate reference method. The formulation of the stability problem in the Zhukovsky sense of the trajectories of dynamic systems described by systems of three nonlinear differential equations of the first order is considered. The definitions of stability of trajectories of a three-dimensional nonlinear system are specified. Using the accompanying coordinate reference, the conditions of exponential stability and instability according to Zhukovsky are obtained. The results can be used in studying the stability of processes in systems of natural science and technology, as well as in solving theoretical and applied problems of mathematical modeling and qualitative research of trajectories of nonlinear dynamic systems.
Modern technological tools for creating multidimensional matrix database machines
Authors: Goncharov E.I. , Munerman V.I. , Sinitsyn I.N.
Published: October 2024

The article discusses a group of tasks that require online analytical data processing. The authors analyze the components of OLAP technology: multidimensional cubes, implementation methods and methods for accessing them. Based on the analysis, it is concluded that truly multidimensional databases do not exist. An algebra of multidimensional matrices is proposed, which corresponds to relational algebra. It is shown that on the basis of this algebra it is possible to develop a DBMS that will provide an effective parallel implementation of OLAP technology. A method for constructing a multidimensional matrix database engine based on available software and hardware is proposed.
Features of systems implementing data intensive domains as objects for ensuring information security using the example of automated control systems for agrotechnological processes
Authors: Budzko V.I. , Belenkov V.G. , Medennikov V.I. , Korolev V.I. , Keyer P.A.
Published: October 2024

The current stage of development of Russian society is characterized by digital transformation of all its spheres, including economics, science, healthcare, education, culture, etc. One of the areas of such transformation is the widespread use of systems that implement data intensive domain (DID), as well as artificial intelligence technologies and systems. The increasing use of these systems and their operation as part of global networks entails information security risks that can negatively impact individuals, groups, organizations, economic sectors and society as a whole. Methods for ensuring information security require development, considering the specifics of these systems and technologies. Features of ensuring information security are considered using the example of an automated control system for agrotechnological processes in agriculture as a system that implements IID. Features of DID systems as objects of ensuring information security and factors influencing the provision of their information security and the creation of means of ensuring information security for DID are determined on the basis of the country's current regulatory and technical framework in the field of information security and taking into account the specifics of the organization of data processing and storage and application of DID systems. The identified features can be used in the development of systems that implement intensive use of data, as well as in the educational process.
¿Influye la formación disciplinar en la formación docente sobre el cambio climático? Una aproximación desde la didáctica de las Ciencias Sociales
Authors: Morote Álvaro
Published: October 2024

El objetivo de esta investigación es identificar las percepciones que el profesorado en formación de Educación Infantil, Primaria y Secundaria (Universidades de Murcia y Valencia, España) tiene sobre su formación y capacitación para enseñar el cambio climático. Metodológicamente se ha implementado un cuestionario al profesorado en formación (n=756) entre los cursos 2018-2019 y 2021-2022. Los principales resultados obtenidos indican que la formación recibida sobre el cambio climático se reduce en la etapa universitaria respecto a la escolar. En cuanto a la capacitación, esta obtiene valores medios siendo una de las demandas para mejorar dicha capacitación, la recepción de más información y recursos. Como conclusión, existe la necesidad de formar al futuro profesorado sobre estos contenidos en la educación superior para afrontar una enseñanza-aprendizaje científica y rigurosa en las etapas escolares.
Alumnos y alumnas digitalmente competentes: una aportación desde la educación musical
Authors: Creamades-Andreu Roberto , Campollo-Urkiza Arantza
Published: October 2024

El avance tecnológico, científico y social producido en la última década remarca la necesidad de aunar los ámbitos de conocimiento de las áreas experimentales junto con las áreas artísticas para un desarrollo integral del alumnado. El objetivo de este trabajo es mostrar, mediante un estudio cuasi-experimental, la contribución de la educación musical en la adquisición de la competencia digital en una muestra de 129 participantes que cursaban sexto de educación primaria en tres centros de titularidad pública y concertada de Madrid, divididos en grupo control (63 estudiantes) y grupo experimental (66 estudiantes). Con el grupo experimental se implementó un programa de intervención didáctica con actividades musicales diseñado ad hoc, a la vez que el grupo control seguía la programación de aula. Los resultados obtenidos por el grupo experimental en la fase postest muestran una mejora en la búsqueda, selección y gestión de la información, la creación de contenidos digitales, la capacidad creativa, así como del lenguaje de la programación, lo que indica que la educación musical puede contribuir al desarrollo de la competencia digital.
Morphological abnormalities in Tribolium castaneum Herbst (Coleoptera: Tenebrionidae) treated with eight toxic compounds
Authors: Pajaro-Castro Nerlis , Caballero-Gallardo Karina , Olivero-Verbel Jesus
Published: October 2024

Toxicity testing is essential for preventing chemical pollution of the environment. T. castaneum can be used as an alternative model for preliminary toxicity screening, eight chemical compounds having known toxicity were evaluated. For example, mercury (II) chloride is considered toxic at concentrations higher than 0.1 mg/L in drinking water, phenol exposure to concentrations greater than 5 mg/L in drinking water can be dangerous, in the case of toluene exposure to concentrations greater than 200 ppm (parts per million) in the air can be harmful to health, hydrazine can be dangerous at concentrations higher than 1 mg/L in drinking water, and caffeine can cause adverse effects such as nervousness, insomnia, tachycardia, and tremors from exposure to doses higher than 500 - 600 mg in adults. In this case, adult insects were fed a diet of oatmeal supplemented with each separately toxic. The number of offspring insects, size, weight, and observation of abnormalities was evaluated. The eight chemicals assessed compounds only five had a visible effect on insect development, BPA and mercury (II) chloride induced abnormalities in the larval and pupal stages, while the phenol, toluene, and metronidazole, in the pupal stage only. Major anomalies were observed necrosis in larvae appendices, in pupae, papillae for sex differentiation are sclerotic or absent, and abnormality in the formation of head, limbs, wings, and appendages. Mercury (II) chloride was the most toxic due to the affected growth, development and reproduction of the insect.
Effects of taftsin-pro-gly-pro peptide on heart rate variability indices in rats in different motor activities
Authors:   Kursk State Medical University, Korobova Viktoria N. , Vorvul Anton O. ,   Kursk State Medical University, Bobyntsev Igor I. ,   Kursk State Medical University, Andreeva Lyudmila A. ,   Kurchatov Institute, Myasoedov Nikolay F. ,   Kurchatov Institute
Published: October 2024

Background: The cardiotropic effects of a synthetic peptide with the anxiolytic activity of taftsinPro-Gly-Pro (taftsin-PGP) under stress was investigated. Previously, the effect of this peptide on the state of the cardiovascular system, which plays an important role in the adaptive reactions of the body under stress, has not been studied. The aim of the study: To study the effect of the regulatory peptide taftsin-Pro-Gly-Pro on the heart rate variability (HRV) indices of rats under conditions of various motor activity. Materials and methods: The study was performed on 48 Wistar rats. HRV indices were recorded using the Physiobelt 2.5.1 complex (Neurobotics, Russia) and analyzed by statistical, geometric and spectral indicators. Taftsin-PGP was administered intraperitoneally at doses of 80, 250 and 750 μg/kg once in a volume of 1 μg/kg. The study was performed in 4 stages: 1 – after adaptation to the device (before the introduction of the peptide), 2 – 15 minutes after the introduction of the peptide, 3 – after physical exertion (2-minute treadmill run), 4 – after a 15-minute rest. Results: At a dose of 80 μg/kg, taftsin-PGP had a pronounced adaptogenic effect in the form of maintaining the initial level of functioning of regulatory mechanisms both during physical exertion and during recovery. At a dose of 250 μg/kg, taftcin-PGP led to disorganization of autonomic regulation at the level of the autonomous and central circuits of heart rate regulation. The introduction of the peptide at a dose of 750 μg/kg stabilized the mechanisms of regulation of heart rate with increased physical activity, but caused an imbalance in the regulation of heart rate during recovery. Conclusion: Intraperitoneal administration of taftsin-PGP to Wistar rats had a dose-dependent and multidirectional effect on the regulation of heart rate at all stages of the experiment: at rest (15 minutes after administration), after physical exertion and during recovery.
Selection of rational tools for the analysis of polyphenols of sandy everlasting flowers and artichoke leaves in the complex of pharmacological studies
Authors:   Peoples' Friendship University of Russia, Khudoyan Ruslan P. , Pisarev Dmitry I. ,   Kosygin State University of Russia, Novikov Oleg O. ,   Peoples' Friendship University of Russia, Yagnikov Sergey A. ,   Peoples' Friendship University of Russia, Nikitchenko Dmitry V. ,   Peoples' Friendship University of Russia, Malyutina Anastasia Y. ,   Dezhou University
Published: October 2024

Background: Pathology of the hepatobiliary system includes a heterogeneous group of diseases of the liver and biliary system caused by viral, bacterial and parasitic infections, neoplasms, toxic chemicals, including alcohol, nutritional errors, metabolic disorders and heart failure. One of the basic groups for pharmacological correction of this group of diseases is the use of hepatoprotectors, drugs that have a predominantly selective effect on the liver. The active ingredient of most plant hepatoprotectors are flavonoids and hydroxycinnamic acids. The most popular plants – hepatoprotectors containing these active substances include – artichoke prickly (Cynara scolymus (L.)) and sandy everlasting (Helichrysum arenarium (L.) Moench), a plant with choleretic action, also capable of hepatoprotective activity. The aim of the study: Development and comparative characterisation of methods for the analysis of polyphenolic composition of sandy everlasting flowers and artichoke leaves in complex pharmacological studies using HPLC and capillary electrophoresis methods. Materials and methods: The sum of polyphenolic compounds was subjected to chromatographic separation in gradient elution mode. Capillary electrophoresis was carried out in a variant of micellar electrokinetic chromatography (MEKC). The buffer solution used was a mixture of: borate buffer 20 mM (pH - 9.3) – beta-cyclodextrin 20 mM – ethyl alcohol (10:10:5). Results: The electrophoregrams of the separation of artichoke leaf extract by the MECC method showed the presence of 7 components belonging to oxycinnamic acids and flavonoids. The dominant ones are chlorogenic acid and luteolin7-glucoside. Similar results were obtained by the HPLC method. The electrophoregram of immortelle flower extract shows 9 components, of which the dominant one belongs to isosalipurposide. Chromatographic analysis of sandy everlasting flower extract showed the presence of the same components. Conclusion: The results of the analysis of the polyphenolic complex of artichoke leaves and sandy everlasting flowers by capillary electrophoresis agree with the data obtained by HPLC chromatography. This allows us to conclude that the MECC method allows the identification and quantification of each component in artichoke leaves and HPLC chromatography flowers along with HPLC. Moreover, the performance of the analysis by CE is more economically feasible than HPLC, since it does not require the use of solvents for the mobile phase and the availability of a set of columns.
Seasonal changes in students' sleep quality as predictors of «adaptation» insomnia
Authors:   Vladikavkaz Scientific Centre of the Russian Academy of Sciences, Belyayeva Victoria A. , Datieva Fatima S. ,   Vladikavkaz Scientific Centre of the Russian Academy of Sciences, Nartikoeva Marina I. ,   Vladikavkaz Scientific Centre of the Russian Academy of Sciences, Basaeva Elena K. ,   North Ossetian State University
Published: October 2024

Background: Sleep disorders occur even at a young age and may result from environmental factors such as circannual fluctuations in hormonal background and social sleep restriction, leading to the development of insomnia. The aim of the study: To assess the quality of sleep in young people (medical students), living in the city of Vladikavkaz in the spring and autumn seasons of the year for identifying predictors of insomnia. Materials and methods: With the help of the Pittsburgh questionnaire to determine the indices of sleep quality, we conducted a survey of 435 2-3 year medical students of the North Ossetian State Medical Academy (age 20.1±0.08) in seasons with a multidirectional photoperiod trend. In the spring period, 270 students were surveyed, in the autumn – 165. C17 components were assessed from 0 to 3 points, in total they determined the overall sleep quality index (Global Score PSQI, (GS)). We analyzed the sleep time of students, the relationship with latency and sleep duration. Results: The total score (GS) in the spring season was 7.19 (boys – 6.07; girls – 7.51), in autumn – 5.69 (boys – 5.59; girls – 5.75). “Bad sleep” is noted by 66.7% of respondents in spring, and 46.4% in autumn. The main contribution to the proportion of students with poor sleep quality in the spring is made by girls – 71.4%, in autumn, the proportion of students with a good quality of sleep increases, both among girls and boys. In the overall negative assessment of the quality of sleep in the spring, the leading role is played by sleep latency (contribution of 21.5%), in addition, the time of going to bed in 69.7% of medical students shifts to a period after 24:00, provoking a violation of circadian rhythms organism. Conclusion: The overall sleep quality index and the components of the PSQI questionnaire during the survey of medical students have a seasonal dependence. In all the studied seasons, students had a “poor” quality of sleep (more than 5 points), but in autumn, sleep characteristics improved by 21% according to Global Score points. In both seasons, students have 3 groups of symptoms out of 5 main criteria for the diagnosis of insomnia syndrome, which allows us to regard violations of the main components of the sleep index as predictors of the development of adaptive (acute) insomnia.
The identification of cephalosporins antibiotics using IR spectroscopy and chemometric algorithms
Authors:   Saratov State University, Shabunina Anna Yu. , Rusanova Tatiana Yu. ,   Saratov State University
Published: October 2024

The use of mid-field infrared spectroscopy in combination with chemometric algorithms for the identification of cephalosporin antibiotics in the form of injectable powders is demonstrated. III generation cephalosporins have been selected as objects of the study: ceftriaxone, ceftazidime, cefotaxime, which are widely used in pharmaceutical practice. IR spectra of the medical preparations have been recorded using an FT-801 Fourier transform IR spectrometer with an attenuated total reflection (ATR) attachment. The results have been processed in the Microsoft Excel computer package with the XLSTAT add-in using the principal component analysis (PCA), the k-means method and agglomerative hierarchical clustering (AНC). It has been shown that using these algorithms it is possible to identify the studied cephalosporin antibiotics from different manufacturers. In the PCA method, points corresponding to samples are located in separate quadrants depending on the nature of the antibiotic. The k-means method has been used to divide antibiotics into classes; differences are also visible in the classes themselves, depending on the manufacturer. The clearest separation of cephalosporins is observed when data are presented using the AHC method in the form of a dendrogram.
Modification of solid-phase polymeric surface by means of grafting of acrylic monomers
Authors:   ACRYPOL Ltd., Saratov State University, Bayburdov Telman A. , Shmakov Sergei L. ,   ACRYPOL Ltd., Saratov State University
Published: October 2024

Graft copolymerization onto a solid polymer surface is an effective tool for its modification. A large number of works have been published and require systematization. A search and review of English-language scientific literature devoted to the graft copolymerization of acrylic monomers onto a polymeric solid-phase surface have been carried out. Grafting onto plates and films, as well as fibers and colloidal particles, is considered. It has been revealed that the most popular substrates for graft copolymerization are, besides polyethylene, propylene and polyethylene terephthalate; polyurethanes, polyfluoroethylenes, rubbers, etc. Graft polymerization mainly proceeds on amorphous areas of the substrate and does not destroy the crystalline phase. It is possible to use the methods of controlled radical polymerization (ATRP, RAFT). Of the acrylic monomers, acrylic and methacrylic acids, glycidyl acrylate and glycidyl methacrylate, and others have been used, while the main method has been UV photopolymerization with an initiator–benzophenone. Of the three aliphatic ketones (acetone, methyl ethyl ketone and methyl propyl ketone), acetone has been the best solvent. Cophotoinitiators have been also used (a synergistic effect was observed), corona discharge, gamma radiation (60Co), ozone and plasma treatment, and a supercritical CO2 medium. The degree of grafting has been controlled by changing the soaking time in the monomer, pressure, concentration of monomer and initiator in the liquid phase, reaction temperature and reaction time. A new technology of graft polymerization with photopatterning has also been proposed. Problems of graft polymerization in terms of surface modification of polymer materials (hydrophilization of the surface, improving paintability and wettability, enhancing adhesion to certain surfaces, biocompatibility) are touched upon, and possible areas of their application are outlined.
Fauna and biotope distribution of mites (Acari: Mesostigmata) from nest of the sand martin (Riparia riparia (Linnaeus, 1758)) in the territory of the Saratov oblast
Authors:   Saratov State University, Kondratev Evgenii N. , Anikin Vasilii V. ,   Saratov State University
Published: October 2024

The basis for the article was entomological collections from the nests of the sand martins (Riparia riparia (Linnaeus, 1758)) collected in the Saratov oblast in 2019–2022. A total of 12 colonies were examined in the Voskresensky, Krasnoarmeysky, Lysogorsky, Rivne, Engelssky and Khvalynsky districts of the Saratov oblast, as well as in the city of Saratov. Gamasid mites were collected using a Tullgren funnel for two to three hours and then identified. In each of the studied colonies, a soil section was laid and its morphological description was carried out. As a result of studies of the fauna of gamasid mites in nests, 21 species from 10 families were identified (Laelapidae, Haemogamasidae, Ascidae, Ologamasidae, Ameroseiidae, Dermanyssidae, Macrochelidae, Melicharidae, Pachylaelapidae, Rhodacaridae). The largest numbers and species diversity are characterized by colonies located in residual carbonate chernozem on limestone (12 species, 6719 specimens), the smallest in a colony located in dark chestnut soil on sand (3 species, 339 specimens). The dominant group consists of 3 species: Androlaelaps casalis (Berlese, 1887) – ectoparasite, obligate nest-dwelling mites, Stratiolaelaps miles (Berlese, 1892) and Hypoaspisella lubrica (Oudemans & Voigts, 1904) – free-living gamasid mites, facultative nest-dwelling mites.
Development of the questionnaire “Individual’s Financial Autonomy Scale” and its psychometric verification based on a group of pre-retirees
Authors:   Institute of Psychology of the Russian Academy of Sciences, Drobysheva Tatyana V. , Tarasov Semyon V. ,   Institute of Psychology of the Russian Academy of Sciences, State Academic University for the Humanities, Larionov Ivan V. ,   Institute of Psychology of the Russian Academy of Sciences, State Academic University for the Humanities
Published: October 2024

Relevance: the issues of studying subjective qualities of the pre-retiree’s personality, including their financial autonomy, are of particular relevance due to economic instability and uncertainty. The present article is devoted to the problem of measuring financial autonomy in the situation of retirement planning which is one of the indicators of economic and psychological maturity of a person. The purpose of the work is to conduct a psychometric test of the original author’s questionnaire “Individual’s Financial Autonomy Scale” (T. V. Drobysheva, I. V. Larionov, S. V. Tarasov). Hypothesis: an individual’s financial autonomy scale has a one-dimensional structure and is associated with internal locus control and autonomy interpreted as the individual’s independence. Participants: 215 pre-retirees (from 45 to 63 years old) living in different regions of the Russian Federation including 108 women and 107 men, 49% are working and 51% are unemployed. Techniques (tools): subscale “Autonomy” of K. Ryff’s Scale of Psychological Well-Being (adapted by T. D. Shevelenkova, T. P. Fesenko), the Subjective Control Level Questionnaire (compiled by E. F. Bazhin, E. A. Golynkina, L. M. Etkind); the results were processed with the help of the software packages IBM SPSS.22.0, IBM AMOS 19.0, Jamovi 2.4.11. Results: the initial standardization of the questionnaire has been carried out. A check for normality and internal consistency has been performed. The study has evaluated the factor structure, discriminatory power and convergent validity of the questionnaire. The results show that the Individual’s Financial Autonomy Scale has a one-factor structure and is characterized by high indicators of psychometric reliability. Main conclusions: the Individual’s Financial Autonomy Scale is a reliable tool that measures financial autonomy as the ability of a person to manage their finances regardless of the opinions of others, to make appropriate decisions and to take responsibility for them, as well as to monitor their financial state. The study describes differences in the degree of autonomy in different groups of pre-retirees. The practical significance of the research is determined by the necessity to provide targeted assistance to pre-retirees in planning their retirement on the basis of the financial autonomy indicators measured with the scale.
Psychological support of foreign students in Russian universities: Following the results of the meeting of the interregional round table discussion
Authors:   Penza State University, Konstantinov Vsevolod V. , Ivanchin Sergey A. ,   Penza State University
Published: October 2024

The relevance of the study determines the necessity to promote the search for tools that increase the effectiveness of psychological support and adaptation of foreign students in Russian universities. It became the main idea of the interregional round table discussion “Psychological Support of Foreign Students in Russian Universities” (Penza State University, April 25, 2024). Purpose: an analytical review of the reports of the participants of the interregional round table discussion “Psychological Support of Foreign Students in Russian Universities”. Results: the participants, among whom there were representatives of university departments responsible for managing the adaptation of foreign students, representatives of public organizations, foreign students, and university professors, discussed the theory and practice of psychological support for foreign students studying at Russian universities. The originality and novelty of the interregional round table discussion are determined by the format of the event, the content of the reports and the list of participants. The round table was attended by representatives of the Russian Federation, Kazakhstan, China, India, Morocco, E gypt, Uzbekistan, Kyrgyzstan, Tajikistan and Turkmenistan.
Legalization of LGBT Marriage: Case Study from Vietnam
Authors: Nguyen Minh Trang , Mai Nhat Hieu
Published: October 2024

LGBT marriage is a legal union between two individuals of the same sex, including lesbian, gay, bisexual, and transgender people. This type of marriage recognizes the equal rights of all people to marry regardless of their sexual orientation or gender identity. In Vietnam, the legal status of LGBT marriage has been the subject of considerable discussion and debate. Although the country has made significant strides in improving the rights of LGBT people, there is still a lack of official legal recognition for same-sex marriage. To date, same-sex marriage has not been explicitly legalized nor fully protected under Vietnamese law. This means that although same-sex marriages are not criminalized, and people have their free will to live together and hold ceremonies, yet these marriages do not hold the same legal status and rights as compared to heterosexual marriages. Vietnam has a strong cultural background and conservative beliefs; these play a crucial role in society in respect to the views within it when it comes to LGBT individuals. Society is becoming more tolerant; however, the LGBT community members are still judged with a high rate of discrimination. Although acceptance still significantly varies between regions and different age groups, public opinion is indeed softening, especially among the young. Due to the legal recognition, LGBT marriages provided them with equal legal rights and responsibilities concerning property, inheritance, adoption, and healthcare, just like heterosexual couples. On the other hand, this also can be regarded as another critical step to social inclusion and the fight against discrimination. This research will discuss the current situation of same-sex marriage in contemporary Vietnam with the aim of completing the picture of the LGBT community. The research study will also interview 22 LGBT individuals and a survey of close to 200 participants.
Counter-colonial unfoldings of cubism in Latin America: The works of Wifredo Lam, Fernando de Szyszlo, and Francisco Matto
Authors: O’Neill Elena , Frick Maria
Published: October 2024

The exceptional cubist configuration is often thought of as a French movement. Nevertheless, beneath the geographical label lies a hidden truth: an art that arises in Paris but relies on the cooperation of artists, critics, and art historians of various nationalities. On the one hand, the channels by which cubism established transatlantic dialogues and exchanges in different moments were diverse and in other periods. For example, by direct contact of Modern Latin American artists with the movement, art students and painters that attended the French academies, and distinguished visitors related to the movement. On the other, as in other regions, cubism circulated in Latin America, catalyzing different artistic approaches and practices that, despite sharing the same origin, resulted in a manifold of proposals and plastic forms.
The cubist influence in Latin America was not strong enough to break with previous cultural traditions. In a similar way to how Pablo Picasso and Georges Braque assimilated the lesson of African sculpture, Latin American artists also dialogued with the so-called primitive cultures of their regions, maintaining and resizing their original symbolic and mythical value.
Artists such as Tarsila de Amaral (Brazil), Cándido Portinari (Brazil), José Cúneo (Uruguay), Emilio Petorutti (Argentina), Diego Rivera (Mexico), among many others, assimilated its morphological aspect. But other artists understood cubism as a way of thinking. They assimilated its structural dimension, such as Wifredo Lam (Cuba), Francisco Matto (Uruguay), Joaquín Torres García (Uruguay), and Fernando de Szyszlo (Peru), among others.
With a theoretical frame following the considerations of Carl Einstein, Daniel- Henry Kahnweiler, and Vincenc Kramář, three art theorists who tackled cubism from different angles and in terms of man’s active participation in the creation of a new, more dynamic view of the world, this paper approaches the works of Wifredo Lam, Fernando de Szyszlo and Francisco Matto, privileging the way they deal with space and their dialogue with local ancestral traditions in the context of modern societies.
OS PRINCIPAIS INSTRUMENTOS JURÍDICO RURAIS
Authors: Lehfeld Lucas de Souza , Morete Ana Cristina Freitas
Published: October 2024

O presente trabalho apresenta a origem e formação dos institutos jurídicos referentes à política agrícola e à reforma agrária. Esses foram implementados com a finalidade de proporcionar o desenvolvimento do setor agropecuário no país. Apesar da existência desse complexo normativo, não se alcançou, no campo, resultados efetivos para a consecução da justiça, equidade e bem-estar social.
ENSINO DO DIREITO NO QUADRO DA GLOBALIZAÇÃO
Authors: Filho Manuel Gonçalves Ferreira
Published: October 2024

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A DURAÇÃO DO ESTADO PUERPERAL NO CRIME DE INFANTICÍDIO
Authors: Ribeiro Olívia Guimarães
Published: October 2024

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DA DISCRICIONARIEDADE ADMINISTRATIVA NA DISPENSA DE LICITAÇÃO E DO COMBATE À IMPROBIDADE ADMINISTRATIVA NESSES PROCEDIMENTOS
Authors: Zeni Paulo César
Published: October 2024

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O DEVIDO PROCESSO LEGAL E O ATRASO CONSTITUCIONAL BRASILEIRO
Authors: Mesquita Gil Ferreira de
Published: October 2024

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REFLEXÃO E AÇÃO POR UMA CONCEPÇÃO DIALÉTICA DOS DIREITOS HUMANOS
Authors: Nascimento José do
Published: October 2024

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RESPONSABILIDADE PENAL DA PESSOA JURÍDICA
Authors: Ribas Lídia Maria Lopes Rodrigues
Published: October 2024

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DANO MORAL: UMA VISÃO CONSTITUCIONAL
Authors: Lima Wanderson Marcello Moreira de
Published: October 2024

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