bluuebunny/crossref_metadata_2025 huggingface dataset:
Prognostic Value of Novel Hematologic Biomarkers in Patients with Pulmonary Arterial Hypertension
Authors: Şensoy Barış , Şensoy Nur Özer , Süleymanoğlu Muhammed , Tüfekçioğlu Omaç
Published: September 2022

Objective: Pulmonary vascular remodeling and inflammation play a major role in pulmonary arterial hypertension (PAH). Novel hematologic biomarkers have recently been recognized as a risk predictor for cardiovascular, oncologic, and inflammatory diseases. We aimed to investigate the association of hematologic biomarkers with mortality in PAH patients.
Materials and Methods: Fourty-five patients diagnosed with PAH and 45 healthy volunteers were evaluated retrospectively. Concurrent data included clinical, echocardiographic, hemodynamic and hematologic variables. The study population was divided into subgroups based on admission neutrophil to lymphocyte ratio (NLR), neutrophil to monocyte ratio (NMR), platelet to lymphocyte ratio (PLR) values.
Results: The median NMR and NLR levels were lower in healthy subjects than in PAH patients (7.7 (7-8.8) vs 9.2 (6.5-11.6); p= 0.03 and 1.9 (1.4-2.9) vs 2.6 (1.9-3.3); p= 0.04) respectively). The estimated mean survival duration was longer in patients with low NMR levels (93 (95% CI, 86-100) vs. 67 (95% CI, 45-88) months (p=0.006) respectively). NMR independently predicted poor outcome and improved the power of the other prognostic markers (OR 1.4 (95% CI, 1-1.8) p= 0.04); (AUC= 0.91; p< 0.0001).
Conclusions: NMR levels alone or combined with other prognostic factors may predict mortality in patients with PAH.
Uso de app construído para prevenção de IST em escola pública: Relato de experiência
Authors: Manço Resende João Victor , Lima da Silva Jorge Luiz , Barreto Meirelles Igor , da Silva Miranda Priscila , Da Silva Soares Rafael , Rangel Lima Fillipe , Dutra da Costa Luanna Barci , Dos Santos Costa Felipe
Published: September 2022

Trata-se de relato de experiência vivenciado em escola pública universitária de Niterói- RJ, onde foram desenvolvidas ações de educação em saúde relacionadas à criação de um aplicativo para celular sobre educação sexual para adolescentes. Objetivo: descrever a prática de educação sexual para os alunos do ensino médio, através do uso de aplicativo móvel, de uma escola pública universitária em Niterói- RJ. Método: estudo descritivo do tipo relato de experiência acerca da apresentação de aplicativo móvel sobre educação sexual para adolescentes e as percepções dos criadores, na prática de educação em saúde. Resultados: os estudantes apreciaram o material e demonstraram interesse, referiram que o Prev-IST se configura como uma importante ferramenta tecnológica de ajuda aos jovens, face às dúvidas. Conclusão: a atividade de promoção da saúde através da educação sexual mediada pelo app se apresentou como satisfatória para os estudantes, evidenciando assim, a relevância da intersetorialidade nas ações em saúde.
Perspectiva de mulheres em recuperação de álcool sobre a prevenção de câncer ginecológico: Uma pesquisa-ação
Authors: Coelho Gonçalves Andreia Machado , Moreira Gomes De Moraes Barros Gisele Cristina , De Oliveira Kariane Elen , De Oliveira Fabiano Fernandes
Published: September 2022

Objetivo: Conhecer a perspectiva, atitude e prática de mulheres em recuperação de álcool sobre a realização de exame Papanicolau e a prevenção do câncer ginecológico.Método: Pesquisa com abordagem qualitativa e do tipo pesquisa-ação. Realizada em uma comunidade terapêutica feminina e desenvolvida em três etapas:exploratória, ação e avaliação que foram planejadas de acordo com a necessidade de orientações das residentes no mês de janeiro de 2022.Resultado:Emergiram-se quatro categorias:A perspectiva das participantes referente ao exame preventivo/Papanicolau; Conhecimento das mulheres sobre o Papiloma Vírus Humano; Atitudes de mulheres em relação ao câncer de colo de útero e Experiências vivenciadas na realização da coleta do exame preventivo. Conclusão: Evidenciou-se que uma parcela significativa de mulheres, ainda desconhece a importância e a finalidade do exame preventivo, consequentemente essa situação reforça os altos índices de mortalidade por essa neoplasia no Brasil, onde a maioria dos casos é detectado em estágios avançados.
MAQNİT SAHƏSİNİN BİOLOJİ OBYEKTLƏRƏ TƏSİRİ
Authors:   Azərbaycan Texniki Universiteti texnika elmləri üzrə fəlsəfə doktoru, dosent, Məhəmməd oğlu Rəhimov Rəhim
Published: September 2022

Açar sözlər: Maqnit induksiyası, maqnitoterapiya,maqnit enerjisi, elektron qurğusu, elektomaqnit ölçmə, maqnitizim, mənfi maqnit sahəsi, təbii mənfi maqnit sahəsi Key words: Magnetic induction, magnetotherapy, magnetic energy, electronic device, electromagnetic measurement, magnetism, negative magnetic field, natural negative magnetic field Maqnitizmin istifadəsi elm və texnikanın bir çox sahələrində aparıcı rol oynayır. Onunla energetika, nəqliyyat, hesablama texnikası, fizika, plazma, və s. kimi sahələrin inkişafı bağlıdır. Maqnit kəşfiyyatı, hidrodinamika, defektoskopiya, maqnit linzaları, informasiyanın maqnit yazılışı, suyun maqnit emalı-bütün bunlar maqnit sahəsinin sənayedə tətbiqinin yalnız bir hissəsidir. Maqnitoterapiyanın müalicəvi olduğu barədə təsəvvürlər hələ 16-cı əsrin əvvəllərinə təsadüf edir. Həkim-fılosof Sviss və əlkimyaçı Paraçels epilepsiya, qanaxma kimi xəstəlikləri məhz bu üsulla müalicə edirdilər. Lakin maqnit terapiyası 18-ci əsrin ortalarında Parisdə həkim Masmer-Avstraliyskiy (hipnozun əsasını qoymuş həkim, “hipnoz etmək” ifadəsi məhz onun adı ilə bağlıdır) tərəfindən “Maqnitlə müalicə” salonunun açılması ilə məhşurlaşdı. Elmi cəmiyyətlərin davam edən ittihamlarına baxmayaraq, maqnit terapiyası müalicə növü kimi kübar cəmiyyətində populyarlaşdı. 1799-cu ildə Eliza Perkins (həkim və heyvan ticarəti kimi iki müxtəlif sənətlə məşğul olub) insanda və atlarda bir sıra xəstəliklərin müalicəsi üçün metallik traktorlardan (traktor-paz şəkilli kiçik maqnitdir) istifadə etməyə başladı. Lakin 1799-cu ildə bu traktorlar doktor Perkinsin sarılıq xəstəliyindən vəfatının qarşısını ala bilmədi və bu da maqnit terapiyası əleyhdarları tərəfindən “reklam” kimi istifadə olundu. 1810-cu ildə Çikaqo maqnit kompaniyası tərəfindən xüsusi geyimlər - şlyapa və paltarlar satışa buraxıldı, (bu geyimlərdə 700-dən çox maqnit istifadə olunurdu). Kompaniyanın rəhbəri, doktor Tetçer, hesab edirdi ki, maqnit sahəsi bütün xəstəliklərin müalicəsi üçün yararlıdır. 20-cı əsrin əvvəllərində (elektrik cərəyanı kəşf olunandan sonra) doktor Albert Abrams elektromaqnit dalğalarının müalicəvi olduğunu kəşf etdi. İkinci dünya müharibəsi zamanı elektromaqnit sahəsinin təkrarsız effekti yaralı Amerika əsgərlərinin ağrılarının azaldılmasında, yaraların sağalmasının sürətlənməsində tətbiq edildi. Gün ərzində günəş pozitiv (+) maqnit enerjisi buraxır, lakin gecə təbii mənfi maqnit sahəsi toxumalar tərəfindən oksigenin qəbulunu artıraraq dərin yuxunu təmin edir, bioloji sağalmaya kömək edir, ağrını azaldır. Gün ərzində günəşin müsbət maqnit enerjisi ümumilikdə mənfi təsir də edə bilər. Maqnit məhsulları orqanizmin terapevtik mənfi maqnit sahəsini bərpa etmək və ya olan maqnit sahəsini gücləndirmək məqsədi ilə tətbiq olunurlar (1).
UWB digital receiver design methodology with sub-Nyquist sampling
Authors:   Saint Petersburg Electrotechnical University ", Podstrigaev Alexey S. ,   LETI"
Published: September 2022

UWB digital receiver design methodology with sub-Nyquist sampling in radio monitoring and cognitive radio tasks, processing of overlapped signals in an ultra-wide frequency band without gaps is required. A digital receiver with sub-Nyquist sampling allows solving this problem. However, in practice, we have some issues. There are various kinds of ambiguity in determining the frequency. The nonlinear elements of the path generate parasitic harmonics of the input signal. In the multi-signal mode, the discrimination of signals deteriorates. All this significantly reduces the efficiency of signal analysis. Therefore, a receiver circuit with software implemented means of eliminating the listed disadvantages is proposed. Such a receiver has features characteristic of sub-Nyquist sampling and selectable parameters. A special technique has been developed to systematize the design process of the receiver. The design methodology takes into account the use of the receiver in single-signal and multi-signal modes. The result of the design is the receiver block diagram with a justification of the parameters of its main elements. The proposed methodology makes it possible to evaluate system characteristics such as sensitivity, the number of processing channels and the throughput by the number of superimposed signals. Automation of checking the conditions given in the methodology can significantly increase the speed and convenience of design. It is shown that for the Gigabit Ethernet interface, the through put of the receiver is about eight superimposed pulse or continuous signals. In this case, due to parasitic components arising in the nonlinear elements of the path, it can be reduced to 4 superimposed signals. The actual number of processed signals is also determined by the probability of their overlap, and when receiving pulsed signals, it can be much higher.
Research and analysis efficiency fiber optical communication lines using quantum technology
Authors:   Azerbaijan Technical University, Ibrаhimov Bayram G. , Orujov Allahverdi O. ,   Azerbaijan Technical University, Hasanov Arif H. ,   Military Academy of the Republic of Azerbaijan, Tahirova Konul M. ,   Military Academy of the Republic of Azerbaijan
Published: September 2022

The analysis of the performance indicators fiber-optic communication lines (FOCL) using quantum technology based on the architectural concept of NGN (Next Generation Network) and future networks FN (Future Networks) for the construction highly efficient optical telecommunication networks supporting a wide range cryptographic resistance. Threats of unauthorized access, denial of service, loss information, cryptographic methods and algorithms for information protection are considered. Complex criteria of FOCL efficiency using such quantum technologies as network performance using WDM (Wavelength Division Multiplexing) technology, information security characteristics when using quantum cryptography protocols, taking into account resistance to various threats, informative characteristics photon sources are selected. A new approach is proposed for the study and assessment of complex indicators complex optical information protection systems and effective control of a set quantum key distribution systems for fiber-optic communication lines. The functioning of the investigated FOCL using quantum technology based on the principles "Point-to-point" network topology, which allows organizing a quantum information and service channel, is considered. On the basis of the proposed approach, the efficiency quantum key distribution, the capabilities quantum cryptography protocols under the influence of photon number splitting attack (PNS-Photon Number Splitting Attack) and the information entropy of the characteristics of sources of optical photon qubit fluxes are investigated. Analytical expressions are obtained for assessing the complex indicators of the information security system when using quantum key distribution (QKD) for FOCL. On the basis of the new approach, a numerical analysis was carried out and a graphical dependence of the information entropy of the packet on the packet length in qubits was constructed for the given transfer characteristics of the FOCL. It was found that an increase in the limited packet length in bits, which meets the requirements reliability and efficiency of the operation FOCL system, leads to an increase in the value information entropy as a fraction of the packet, at a given bit rate of the network.
The using of ZigBee protocol to organize the "Smart Home" system for aged people
Authors:   Moscow Technical University of Communications and Informatics, Stepanov Michael S. , Poskotin Leonid S. ,   Moscow Technical University of Communications and Informatics, Shishkin Dmitriy V. ,   Moscow Technical University of Communications and Informatics, Turgut Timur ,   Moscow Technical University of Communications and Informatics, Muzata Artwell Regis ,   Moscow Technical University of Communications and Informatics
Published: September 2022

The machine-to-machine communication and automation are main trends in the world of modern infocommunications. The concept of Internet of Things is widely used for these purposes. It consists of two main categories namely long-range and short-range networks. The latter includes the "Smart Office" and "Smart Home" systems, which are very popular today. Various technologies enable the automation of processes such as security management, climate control, lighting, etc. This article will focus on the development of a "Smart Home" system for people with limited mobility using ZigBee technology. Basic and additional requirements needed in this system are specified. A brief description of the latest version of the ZigBee 3.0 protocol is provided. The software part of the considered ZigBee subsystem is based on the open-source code of the Zigbee2MQTT project, which supports integration with all common home automation services through the use of the standard MQTT protocol. Hardware part is presented. It includes both server and different types of smart devices. The recommendations for the implementation of some basic and optional requirements for the Smart Home system for an elderly person are given. Among them there is movement tracking, water leaks detection, lightning automation, SOS button, climate control, reminder of important things before leaving the house, television.
An obvious asymptotic solution to the diffraction problem on a single scatterer of large wave sizes
Authors:   Moscow Technical University of Communications and Informatics, Kyurkchan Alexander G. ,   Kotel'nikov Institute of Radio Engineering and Electronics,   Central Research Institute of Communication
Published: September 2022

The stated problem remains very relevant, despite the rapid development of numerical methods and computer technology. The fact, in particular, is that even when using the most efficient numerical methods and algorithms, the problem remains very time-consuming. The following is an approach to solving the above problem, based on the method of pattern equations. Presenting the scattered field as the sum of three terms - a current pattern in the approximation of physical optics and two patterns of so-called semi-shadow currents distributed in the neighborhood of the light-shadow boundary, the initial problem is reduced to solving the simpler problem of the interaction of two (small) diffusers located at a great distance from each other, which is already solved relatively easily and moreover in an explicit form.
Model for estimating the throughput of 5G NR backhaul networks
Authors:   Tomsk State University of Control Systems and Radioelectronics, Pokamestov Dmitry A. , Kryukov Yakov V. ,   Tomsk State University of Control Systems and Radioelectronics, Rogozhnikov Evgeny V. ,   Tomsk State University of Control Systems and Radioelectronics, Novichkov Serafim A. ,   Skolkovo Institute of Science and Technology, Lakontsev Dmitry A. ,   Skolkovo Institute of Science and Technology
Published: September 2022

Currently, the fifth generation of mobile communication systems of the 5G NR standard are being introduced all over the world. One of the most important components of these systems are backhaul transport networks connecting the base station and the core of the network. The bandwidth of these networks must be sufficient to carry a large amount of traffic. In this article, we propose a mathematical model for calculating the throughput of backhaul networks, which can be used in the design of 5G infrastructure. We also consider some important aspects of the 5G architecture, which make fundamental differences from communication networks of previous generations. One of these aspects is the use of distributed base stations, in which radio signal processing units, low-level and high-level protocol processing units are separated not only logically, but also physically, and can also be spatially separated. Thus, 5G systems fit into the concept of cloud networks, due to which it is possible to significantly save resources for infrastructure deployment. However, such a solution increases the requirements for transport networks. Possible approaches to the physical implementation of transport networks are considered, including a fundamentally new solution that integrates radio access and backhaul networks. Finally, taking into account these and other factors, a mathematical model created by us for estimating the required bandwidth of backhaul networks is described. The model is based on calculating the maximum network load in a base station cell, taking into account such parameters as the number of spatial beams, the aggregated number of subcarriers, modulation index, coding rate, etc. The distributed structure of the base station is also taken into account in the model. Three scenarios of 5G base station operation are shown and an estimate of the required throughput of backhaul networks is given for them.
Investigation of risk factors for violations related to the use of smartphones while driving
Authors:   Moscow Automobile and Road Construction State Technical University, Pospelov Pavel I. , Tatashev Alexander G. ,   Moscow Automobile and Road Construction State Technical University, Trofimenko Yuri V. ,   Moscow Automobile and Road Construction State Technical University, Yashina Marina V. ,   Moscow Automobile and Road Construction State Technical University
Published: September 2022

One of the most common traffic violations committed by drivers is using a smartphone while driving. In Germany, a methodology for conducting observations on roads was developed, as a result of which data was obtained on the frequency of actions by drivers not permitted by traffic rules, taking into account the influence of factors such as the age and gender of the driver, the type of road - a highway, an intracity or rural road, time of day, day weeks, season of the year. The 2019 survey and analysis of secondary distraction-related behaviors are summarized in a final report, one of two volumes of which addresses the issue of smartphone use by drivers and factors affecting the incidence of this type of violation. In this paper, we propose an approach using the methods of mathematical statistics to assess the correlation between the factors under consideration and the frequency of using smartphones.
Car wheel models using the distributions laws of forces on a contact patch with the road surface
Authors:   Moscow Automobile and Road Construction State Technical University, Karelina Maria Yu. , Terentyev Alexey V. ,   Moscow Automobile and Road Construction State Technical University, Rosenblat Gregory M. ,   Moscow Automobile and Road Construction State Technical University, Yashin Vladimir B. ,   Moscow Automobile and Road Construction State Technical University
Published: September 2022

It is natural to consider the rolling dynamics of an automobile wheel when it interacts with the road surface. At the same time the most difficult and important task is to determine the force components applied to the wheel, such as the friction driving force, the drag force, the rolling and spinning resistance moments that occur in the contact spot from the side of the roadbed. The paper investigates the aspects of dry friction, rolling and sliding of an automobile wheel presented as a deformable body. In this case, it is of great importance to take into account the treads, which is reflected in the tire models. An important aspect is the study of the laws of distribution of normal stresses in the contact area. To solve practical issues of road transport, approaches based on the Magic Formula of Pacejka and calculation methods based on brush, ribbon and string models, in particular, the Brush model of Svendenius, are highlighted. The conditions of its applicability are obtained and justified.
Investigation of the Bayesian and non-Bayesian time series forecasting frameworks in application to OSS systems of the LTE/LTE-A and 5G mobile networks
Authors:   Kazan National Research Technical University named after  A.N. Tupolev-KAI, Fadeev Vladimir A. , Zaidullin Shaikhrozy V. ,   Kazan National Research Technical University named after  A.N. Tupolev-KAI, Nadeev Adel F. ,   Kazan National Research Technical University named after  A.N. Tupolev-KAI
Published: September 2022

Applicability of some conventional Time-Series prediction models for the temporal dynamics of the EPS Radio Bearer Setup Failure Rate is examinated in this paper. Two main problems of the proactive network management have been considered: the prediction of regular part of time series and the outliers prediction. For the regular part prediction Holt-Winters Exponential Smoothing, Extreme Gradient Boosting (XGBoost), Support Vector Regression (SVR), Python Dynamic Linear Model (PyDLM) and Seasonal Auto Regressive Integrated Moving Average (SARIMAX) have been used. The error performance has been analyzed using Median Absolute Error, Mean Absolute Error, Mean Square Error and Root Mean Square Error. A two-step approach has been proposed for the outliers prediction. Deployment of such approach is justified by the fact, which the time moments of the anomalies, are preferable for practical purposes. On the first step, the values of time-series are predicted using one of the above mentioned models. On the second step the resulting values from the step one are classified using discrete state Hidden Markov Model. For the error performance estimation purpose True Positive, False Positive and False negative rates have been calculated for the respective models. Finally, several proposals for the usage of the considered algorithms in a proactive offline network management in Operation Support System (OSS) or Network Data Analytics Function (NWDAF) have been made.
Communication system functions control conceptual model for detecting conflict situations
Authors:   Military Orders of Zhukov and Lenin of the Red Banner Academy of Communications named after Marshal of the Soviet Union S.M. Budyonny, Sinyuk Alexander D. , Satdinov Airat I. ,   Military Orders of Zhukov and Lenin of the Red Banner Academy of Communications named after Marshal of the Soviet Union S.M. Budyonny, Kondrashov Yury V. ,   Military Orders of Zhukov and Lenin of the Red Banner Academy of Communications named after Marshal of the Soviet Union S.M. Budyonny, Ostroumov Oleg A. ,   Military Orders of Zhukov and Lenin of the Red Banner Academy of Communications named after Marshal of the Soviet Union S.M. Budyonny
Published: September 2022

Introduction: a communication system is an integral part of any control system, which includes subsystems for diagnostics, monitoring and control of its condition. The imperfection of control modern means, diagnostics and monitoring leads to a situation where decision support systems and decision makers carry out their activities in conditions of uncertainty. The process of making a decision and responding to a change in the state of the system due to the influence of various factors can lead to the failure of the system to fulfill its tasks. To effectively solve this problem, the control system must constantly have reliable information about the state of its elements, and the decision support system for the state of the elements must predict the process of functioning of the communication system. The purpose of the study: to develop an approach to monitoring the functioning of the communication system, which allows obtaining reliable and timely information about the controlled object, as well as identifying and responding in a timely manner to deviations from the stable functioning of the communication system. Methods: using the process approach and the mathematical apparatus of the theory of hierarchical decisions to formalize the functioning of the communication system and form the profile of the communication system. Results: an approach for describing a communication system is proposed, including the tasks and functions of the system. Based on the needs of communication and control systems, a profile of the communication system functioning is formed, which is compared with the functioning process profile of the communication system formed in the process of the communication system functioning. The results of the comparison show the presence of conflicts caused by the influence of various destabilizing factors, the conditions of a changing environment and the control actions of a higher management system. The results obtained are used to form the field of decisions required by decision makers. Practical significance: the results of the study can be used in the design and construction of control systems, diagnostics and monitoring of the state of the communication system. The proposed approach can be used to control the fulfillment of tasks and functions of the communication system during its operation.
Construction and analysis of a transmission model in 5G cell in the form of two-phase queuing system with account of the retransmission prediction mechanism
Authors:   Fraunhofer Heinrich-Hertz-Institute, Rykova Tatyana V.
Published: September 2022

The mechanism of early channel adaptation based on e-HARQ (early Hybrid Automatic Repeat reQuest) prediction for the downlink of a mobile network, which solves the problem of improving information transmission characteristics, is studied. The model is a two-phase queuing system (QS). In the QS, at the first phase, the prediction process with the possibility of relaying is modeled, and at the second phase, the process of message processing by the user terminal based on the HARQ physical layer protocol is considered. The HARQ protocol in the 5G network provides the transmitter with an acknowledgment message ACK in case of successful decoding of the packet, and NACK in case of error. Its main disadvantage is the limitation on RTT (Round Trip Time) - the time interval between the initial and retransmission processes. Numerical analysis of the obtained probabilistic-temporal characteristics (PTCR) is carried out. At the first stage, the transition probabilities were found by modeling the link layer of the 5G network. Obtaining realistic values for the transition probabilities allows using this analytical model to analyze and optimize existing e-HARQ prediction schemes. Next, a simulation complex was developed to check the correctness of the analytical model.
Reliability parameters transformation using parametric method
Authors:   SPbSUT, Sherstneva Alina A. , Sherstneva Olga G. ,   SibSUTIS
Published: September 2022

As a whole calculation of reliability indicators and obtaining estimates of the reliability for infocommunication systems and networks is based on various assumptions about the distributions laws of empirical data obtained as a result of an experiment or during operation. As theoretical and practical studies an algorithm for calculating the numerical values of a random variable in a random process using the parametric method is presented. The article is aimed to transform different types of distribution. Calculated formulas are derived. The problem of obtaining a chi-square distribution from four normally distributed random sequences is solved. Software implementation was performed using the mathematical modeling program Matlab. Graphs are proposed to illustrate the transformation of a uniformly distributed random sequence into an exponentially distributed sequence. A comparison between theoretically and practically completed transformations is given.
Modeling and optimization of a computer corporate network with priority service "Elections"
Authors:   Azerbaijan State Agricultural University, Huseynov Z.N.
Published: September 2022

Analyzed indicators modeling and optimization of a computer corporate network with priority service "Elections". The urgency of designing corporate computer networks and providing quality of service (QoS – Quality of Service) is based on the fact that the work was carried out in accordance with the design plan of the State Automated Information System "Elections" and the application new equipment and technology. The purpose of the work: development of methods for calculating the probability denial of the flood inquiries in corporate computer networks and the probability of timely delivery preparation proposals on the selection and effective use telecommunications equipment when creating corporate computer networks development methods for optimizing the parameters of telecommunication nodes operating with different service systems. Using analytical models of a computer corporate communication network, the probabilities loss and timely delivery of requests are determined. The work of the corporate communication network "Elections" of the Republic of Azerbaijan has been studied.
Three-dimensional reconstruction of an object from a single image using deep convolutional neural networks
Authors:   Moscow Technical University of Communications and Informatics (MTUCI), Gadasin Denis V. , Shvedov Andrey V. ,   Moscow Technical University of Communications and Informatics (MTUCI), Kuzin Ivan A. ,   Moscow Technical University of Communications and Informatics (MTUCI)
Published: September 2022

The automatic creation of three-dimensional prototypes and digital copies of three-dimensional objects of the real world is a revolutionary innovation that is actively used today in many areas of human activity, for example, for identification in smartphones and e-commerce applications, as well as in visualization and design systems. This trend has intensified now that additive technologies have become available to a wide range of users, and large-scale storage of three-dimensional objects are becoming increasingly popular and widespread. One of the tasks that a person solves every day on an unconscious level is the cognition of images: visual, sound intelligible, tactile and others. Thanks to image recognition, it is possible to identify people by external signs and distinguish them from each other, identify sounds, classify different objects by similar properties, and also accurately determine the subjective characteristics of the observed objects, such as color, shape, volume and depth. The problem of recognizing images of objects of the surrounding world and understanding their scale and volume by two-dimensional projections is one of the most urgent and studied problems solved by computer vision methods. However, this class of tasks is quite difficult to formalize, which makes their solution time-consuming to develop and implement. The article describes the development of a software package that re-constructs three-dimensional scenes according to their projections using neural network machine learning methods: the basics of three-dimensional reconstruction are considered, a model of the general architecture of the PAK is proposed, the architecture is introduced the developed neural network, the results of training and test experiments.
Efficiency evaluation of background removal algorithms
Authors:   Moscow Technical University of Communications and Informatics, Davydova Anastasia A. , Egorov Dmitry A. ,   Moscow Technical University of Communications and Informatics
Published: September 2022

The necessity to delete background on an image occurs quite often. Technologies are closely connected to our everyday life so with its change they have to be adapted to the new realities. The increasing amount of video conferences during the COVID19 epidemic brought the concept of virtual backgrounds to the fore. Any videoconference services either Google Meet, Zoom or MS Teams and others have this function. Virtual background could be really useful for confidential protection or hiding one's chaotic surroundings. The technology of automated background removal must be developed, because first of all, people want to leave their personal life private, that is why they hide the place where they are. Secondly, the usage of this technology is applied for visual tracing and image segmentation. But more often background removal is used when making new content, it is possible to add any kind of background to an extracted fragment thereby getting a completely new image. Currently, there are a lot of programs with a help of which a background removal could be done, but manual correction still remains the most trusted method, yet it is a labourintensive process with requires a lot of time. Frequently people need a quick solution for image editing and the services that provide such features are either paid services or they are not able to cope with the task, presenting the necessary level of quality. The article explores different modules of background removal and evaluates the efficiency of their work. The actuality of this problem is caused with the need of confidentiality protection with the increasing usage of services for videoconferences and also for making content, visual detection and operative problem solution. In this material we take a look at the methods used in the models, evaluate the work of the most popular models for background removal with the help of proposed new metrics for output results. All of this helps to define pluses and minuses of studied algorithms.
LITERARY-ARTISTIC, HISTORICAL AND LOCAL
LORE ALMANAC ZHAIVIR (1908–2008) IN THE FUNDS OF BRZEZANY MUSEUM OF LOCAL LORE
Authors: Protsiv Mykola
Published: September 2022

Literary-artistic, historical-local lore almanac Zhaivir played an important role in the creation of the information environment in Brzezany re gion in the first two decades of independence of Ukraine, setting the reference point in the field of cultural and national-educational work.
Even now, there is no thorough research of the phenomenon of this issue, which involved hundreds of authors and thousands of grateful readers.
The objective of the article is to review the collection of this almanac, which is stored in the Brzezany Museum of Local Lore: release dates (from 1990 to 2008), editors, publishers, periodiсity, topics, headings, format, editions and authors. This is the most complete collection of Zhaivir (over 80 releases).
By reviewing and reading individual issues information was analysed about: authors, topics, periodicity, format, periodicity was analyzed, which was recorded in the relevant worksheets.
Special issues and appendixes are analyzed and described separately. Museum documentation was also reviewed.
The results of the study are incorporated into spreadsheet (year of publication, number, title or topic of special issues and applications), named the most popular rubrics, and dozens of authors. The article about the almanac Zhaivir was included in the catalog «Periodicals of Brzezany region for 30 years of independence of Ukraine (1991–2021) in the funds of Brzezany Museum of Local Lore».
The collection of the almanac Zhaivir is a good source of information about the life of Brzezany region, which is often referred to by scientists and local historians, just venerators of the recent past of the region and not only. Wide range of topics of publications, a large number of authors of various specialties, famous and less-known works, many local lore discoveries make the almanac relevant.
This article could be the beginning of a deeper study of the phenomenon of Zhaivir almanac – the creation of a complete description of all numbers: numeration, frequency and dates of releases, places of printing, circulation; representation of names and geographies; brief information about publishers, editorial board, authors, artists, patrons.
If this description will be sent to various libraries and other scientific institutions, it would be a good reference point and tool for researchers.

Keywords: almanakh, Zhaivir, Berezhany, applications, edition, special issue.
Development of recipes for low-protein cupcakes for specialized nutrition
Authors:   Peter the Great St. Petersburg Polytechnic University (SPbPU), Bychenkova V.V. , Bazhenova I.A. ,   Peter the Great St. Petersburg Polytechnic University (SPbPU), Chernova E.V. ,   Saint-Petersburg State University of Economics
Published: September 2022

Цель исследования — разработка рецептуры кексов как низкобелковых мучных кондитерских изделий. Обоснован выбор сырья: кукурузной и рисовой муки, кукурузного крахмала (не содержат глютен), пюре банана, апельсинового сока. Два последних ингредиента выбраны для покрытия дефицита витаминов и минеральных элементов в диете больных фенилкетонурией. Добавление пюре банана и апельсинового сока позволило уменьшить количество сахара и снизить калорийность c 250 до 218 килокалорий на 100 г готовой продукции. По органолептическим показателям разработанные изделия не уступают кексам, приготовленным с использованием пшеничной муки. В полученных изделиях понижено содержание фенилаланина в 7,5 раза по сравнению с контрольным образцом. Разработанные изделия рекомендуются для использования в питании больных фенилкетонурией
Theoretical justification of the use of kelp to ensure a full diet for the elderly
Authors:   «Scientific Research Institute of Food concentrate Industry and Special Food Technology» – branch «Federal Research Center of Nutrition Biotechnology and Food safety», Urubkov S.A. , Smirnov S.O. ,   «Scientific Research Institute of Food concentrate Industry and Special Food Technology» – branch «Federal Research Center of Nutrition Biotechnology and Food safety», Korolev A.A. ,   «Scientific Research Institute of Food concentrate Industry and Special Food Technology» – branch «Federal Research Center of Nutrition Biotechnology and Food safety»
Published: September 2022

В зависимости от физиологических и возрастных потребностей, для поддержания качества жизни человека, рацион питания должен обеспечивать необходимым количеством энергии, питательных веществ, микро- и макроэлементов. Для людей пожилого возраста обеспечение полноценным рационом питания особенно важно в связи с возрастными изменениями метаболизма. С возрастом снижается биосинтез и активность пищеварительных ферментов, ослабевают процессы всасывания, что приводит к увеличению потерь употребляемых белков, минералов и витаминов. Геронтологическое питание должно сочетать в себе принципы рационального, сбалансированного питания с учетом возрастных изменений в организме. Для людей пожилого возраста, как правило характерно развитие первичного гипотиреоза щитовидной железы. Причиной развития первичного гипотиреоза могут быть также недостаточное поступление в организм йода, белка и селена. Многие добавки увеличивают содержание йода в пище. Среди них - йодат калия, добавляемый в тесто в хлебопекарной отрасли, и йодоформ, используемый как антисептическое средство в молочной промышленности. Специально обогащают йодом соль, хлеб и ряд других продуктов. В настоящей работе обобщены и представлены результаты комплексного исследования химического состава ламинарии на основе работ отечественных и зарубежных авторов. В рамках данного исследования обоснована целесообразность включения ламинарии в продукты питания для населения пожилого возраста. Всемирная организация здравоохранения (ВОЗ) причисляет заболевания, связанные с недостатком йода к одним из самых распространенных заболеваний человека – риск существует для более 1,5 млрд. человек. Наиболее частым йододефицитным заболеванием является увеличение щитовидной железы или эндемический зоб, которое характерно для 650 млн. человек. К числу наиболее значимых последствий можно отнести нарушения репродуктивной функции для женщин, а также врожденную гипофункцию щитовидной железы.
Investigation of sources of lime disease contamination of bread (pita) and the methods for its inhibition
Authors:   St. Petersburg branch Scientific Research Institute for the Baking Industry, Savkina O.A. , Lokachuk M.N. ,   St. Petersburg branch Scientific Research Institute for the Baking Industry, Pavlovskaja E.N. ,   St. Petersburg branch Scientific Research Institute for the Baking Industry, Kuznetsova L.I. ,   St. Petersburg branch Scientific Research Institute for the Baking Industry
Published: September 2022

В последние годы отмечается увеличение случаев возникновения такого вида микробной порчи хлебобулочных изделий, как меловая болезнь, возбудителем которой являются дрожжи и дрожжеподобные грибы. Актуальным является проведение исследований микробной обсемененности воздуха и поверхностей оборудования хлебопекарного производства с целью выявления источников контаминации хлебобулочных изделий возбудителями меловой болезни. Исследования проводились в условиях пекарни в Санкт-Петербурге и в лаборатории Санкт-Петербургского филиала ФГАНУ «НИИХП». Целью настоящей работы являлось выявление в производственных условиях критических точек, обусловливающих контаминацию возбудителями меловой болезни изделий хлебобулочных пита, и разработка способов ингибирования данного вида микробной порчи. Объектами исследований служили изделия хлебобулочные (пита), воздух производственных помещений и поверхности оборудования и инвентаря. Пробы воздуха отбирали седиментационным методом. Смывы отбирали с рабочих поверхностей оборудования, инвентаря, упаковочного материала, рук персонала и готовой питы в разных точках от печи до упаковки. Установлено, что пита выходит стерильной из печи, контаминация происходит в процессе транспортирования, остывания и упаковки. Источниками контаминации являются воздух производственного помещения, вентиляторы, а также поверхности технологического оборудования и руки рабочих. С целью предотвращения микробной порчи питы исследовали влияние пшеничной густой закваски и разных дозировок сорбата калия в сочетании с УФ-облучением воздуха помещения на ингибирование возбудителей меловой болезни. Установлено, что эффективным способом ингибирования меловой болезни в пите является применение пшеничной густой закваски или сорбата калия в дозировке 2 г/кг муки совместно с УФ-облучением воздуха производственных помещений, что позволяет предотвратить появление меловой болезни в течение 7 суток. Показано, что значительное влияние на скорость возникновения меловой болезни оказывает температура хранения готовых изделий. Для замедления развития меловой болезни рекомендуется обеспечивать температуру транспортировки и хранения изделий в торговой сети не выше 25±1°С.
Aprendizaje colaborativo internacional en línea
Authors: Cipagauta Moyano Marisol Esperanza
Published: September 2022

As a strategy for internacionalization of the syllabus, COILs or Collaborative Online International Learnings have positioned themselves as an alternative for the promotion of intercultural competences, free of charge and without moving abroad. This article shares the experience of a COIL developed by teams of students from Colombia and Peru, based on a research idea in the field of education, describing the step-by-step process and analyzing its contribution to the teaching, learning and assessment process from the participants' perspectives.
Koncerty Louise Armstronga v Praze v roce 1965 jako odrazový můstek švýcarského producenta Wernera Schmida
Authors: Andrs Jiří
Published: September 2022

The building of cultural dynamics of Czechoslovak post-stalinist era of the 1960s was interconnected to profitable production activities and restoring of ties to the West. Louis Armstrong’s series of performances in March 1965 became a milestone of this trend. Two key figures of the second half of the 1960s appeared in the background – Swiss producer Werner Schmid and manager František Spurný on Czechoslovak side. Thanks to the not-yet-published archival materials of Czechoslovak secret police (StB) we can learn new facts about the background of 1960s cultural exchange between the West and Czechoslovakia.
Ferrocenoyl-adenines: substituent effects on regioselective acylation
Authors: Toma Mateja , Zubčić Gabrijel , Lapić Jasmina , Djaković Senka , Šakić Davor , Vrček Valerije
Published: September 2022

A series of N6-substituted adenine–ferrocene conjugates was prepared and the reaction mechanism underlying the synthesis was explored. The SN2-like reaction between ferrocenoyl chloride and adenine anions is a regioselective process in which the product ratio (N7/N9-ferrocenoyl isomers) is governed by the steric property of the substituent at the N6-position. Steric effects were evaluated by using Charton (empirical) and Sterimol (computational) parameters. The bulky substituents may shield the proximal N7 region of space, which prevents the approach of an electrophile towards the N7 atom. As a consequence, the formation of N7-isomer is a kinetically less feasible process, i.e., the corresponding transition state structure increases in relative energy (compared to the formation of the N9-isomer). In cases where the steric hindrance is negligible, the electronic effect of the N6-substituent is prevailing. That was supported by calculations of Fukui functions and molecular orbital coefficients. Both descriptors indicated that the N7 atom was more nucleophilic than its N9-counterpart in all adenine anion derivatives. We demonstrated that selected substituents may shift the acylation of purines from a regioselective to a regiospecific mode.
Analisis Hasil Belajar Materi Larutan Penyangga Melalui Pendekatan Discovery Learning
Authors: Trifiani A.B Ena  , Hironimus C. Tangi  , Yustina D. Lawung  , Erly Grizca Boelan
Published: September 2022

Penelitian ini bertujuan untuk ini adalah: 1) Untuk mengetahui keterlaksanaan pendekatan discovery learning pada materi larutan penyangga; 2) Untuk mengetahui hasil belajar peserta didik kelas XI IPA SMAK Sint Carolus Kupang terhadap pendekatan discovery learning pada materi larutan penyangga, 3) Untuk mengetahui angket kepuasan peserta didik terhadap penerapan pendekatan discovery learning pada materi larutan penyangga; 4) Untuk mengetahui pengaruh penerapan pendekatan discovery learning terhadap hasil belajar peserta didik kelas XI IPA SMAK Sint Carolus Kupang; dan 5) Untuk mengetahui hubungan penerapan pendekatan discovery learning terhadap hasil belajar peserta didik pada materi larutan penyangga. Jenis penelitian yang digunakan dalam penelitian ini adalah penelitian deskriptif asosiatif. Sampel pada penelitian ini adalah kelas XI IPA 2 SMAK Sint. Carolus Kupang yang berjumlah 30 peserta didik. Dari hasil penelitian dan pengolahan data didapti bahwa: 1) penerapan pendekatan discovery learning pada materi larutan penyangga pada kelas XI IPA SMAK Sint Carolus Kupang termasuk dalam kategori baik dengan nilai reliabilitasnya yaitu 98%; 2) Hasil belajar peserta didik kelas XI IPA SMAK Sint Carolus Kupang dinyatakan tuntas dengan nilai rata-rata sebesar 8; 3) Angket kepuasan peserta didik terhadap penerapan pendekatan discovery learning pada materi larutan penyangga termasuk kategori sangat baik dengan persentase 82%; 4) Adanya hubungan yang signifikan terhadap penerapan pendekatan discovery learning terhadap hasil belajar peserta didik pada materi larutan penyangga dengan koefisien korelasi sebesar 0,40; 5) Adanya pengaruh yang signifikan terhadap penerapan pendekatan discovery learning terhadap hasil belajar peserta didik kelas XI IPA SMAK Sint Carolus Kupang dengan persamaan regresi sederhana sebesar Y = 70,338 + 0,173x.