bluuebunny/crossref_metadata_2025 huggingface dataset:
The Impact of Green Trade Openness on Air Quality
Authors: Van Hinsberg Nicky , Can Muhlis
Published: October 2024

Environmental degradation is among the most pressing issues the world faces today. Air pollution is one of the many forms of environmental degradation and can drastically impact human health and ecosystem functioning. Research shows that rapid intervention strategies are required to achieve the environmental targets set out by international agreements. One strategy that has been widely accepted to combat this issue of environmental degradation is the introduction of green products. The adoption of green products can be increased through trade. However, knowledge of the impact of trading these products is limited. This study examines the relationship between the trading of green products and air quality in a case study of 33 Organization for Economic Cooperation and Development (OECD) member countries from 2003-2016. We employ several panel strategies, such as the Westerlund (2008) Durbin-H method for cointegration and the Method of Moments Quantile Regression (MM-QR). The trading of green products was proxied by the newly developed ‘Green Openness Index.’ Nitrous oxide (NOx) and sulfur oxide (SOx) emissions served as proxies for air pollution. The relationship between the variables was explored in the context of the Environmental Kuznets Curve (EKC). The cointegration analysis reveals that there is a long-run relationship among the series. Long-run estimations prove that the EKC hypothesis is valid for the analyzed series. Additionally, the empirical findings reveal that trading environmentally friendly products increases air quality while energy consumption decreases. We provide several policy suggestions based on the study’s outcomes, such as supporting the trade liberalization of green goods, reducing tariff and non-tariff barriers for environmentally friendly products, and promoting the adoption of environmentally friendly goods by providing subsidies and other tax incentives to consumers.
Optimizing Motorcycle Manufacturing Sustainability through the Integration of Waste Heat Recovery and Metal Scrap Recycling: A Process Engineering Approach
Authors: Saiful Rifki , Yandri Erkata , Hilmi Erik , Hamja Nasrullah , Uhanto Uhanto , Fitriani Fitriani , Ibrahim Riki Firmandha
Published: October 2024

The automotive industry manufacturing has experienced rapid growth 2–3 times by 2050, with motorcycles constituting around 30% of vehicles worldwide, but this increase in production has significantly heightened the demand for raw materials and energy. A major challenge arises in managing material waste and waste heat generated during the manufacturing process. This research aims to develop a framework that optimizes the synergy between material waste recycling and waste heat recovery to enhance the sustainability of the motorcycle industry, reduce waste, and lower energy consumption. The design leverages waste heat from the melting process to preheat raw materials, raising temperatures from around 50 °C to 350 °C before melting, thereby reducing additional energy needs, lowering emissions, and decreasing operational costs. Utilizing waste heat for preheating not only mitigates environmental impact and thermal load but also significantly improves energy efficiency, ultimately resulting in cost savings and optimized resource use. Utilizing waste heat directly for preheating raw materials has effectively lowered energy consumption by as much as 30%. This approach not only improves operational efficiency but also decreases production costs and minimizes environmental impact, offering a more sustainable solution for the manufacturing sector.
Evaluación de glucemias en pacientes diabéticos en el preoperatorio inmediato y en el postoperatorio tras administración de bebida carbohidratada
Authors: Mudarra García Natalia , García Sánchez Francisco , Monteagudo Alvarez del Valle Almudena , Romero Pineda Mónica , Romero Pineda Mónica , Izquierdo Izquierdo Visitación
Published: October 2024

El ayuno preoperatorio y el estrés quirúrgico pueden inducir insulinorresistencia e hiperglucemia postoperatoria. La ingesta oral de carbohidratos antes de la cirugía, puede atenuar la respuesta catabólica inducida por la cirugía y el ayuno y reducir la insulinorresistencia postoperatoria. Estas bebidas carbohidratadas deben administrarse igualmente en los pacientes diabéticos tipo II y deben administrarse junto con su medicación antidiabética habitual.
Los objetivos principales fueron, analizar las glucemias que tienen los pacientes (según el fármaco administrado), tras la ingesta de bebidas carbohidratadas y evaluar las complicaciones de la herida quirúrgica.
Se trata de un estudio observacional, prospectivo, comparativo (antes y después), longitudinal, que analiza a 29 pacientes, comparando las glucemias de los que se les suspende metformina 24 horas antes de la cirugía y a los que se les suspende 5 días antes de la intervención sustituyéndola por sitagliptina.
Se encontraron resultados estadísticamente significativos, tal y como se evidencia en dicha tabla, entre, las glucemias capilares al salir de quirófano y a las dos horas de la misma (0,028 y 0,002 respectivamente) y entre las complicaciones de dehiscencia de sutura y de la herida quirúrgica (0,016 en ambas variables).
Concluimos que los pacientes que recibieron Sitagliptina (sustitución de metformina por sitagliptina) redujeron el riesgo de hiperglucemia, posterior a la administración de bebida carbohidratada al igual que se disminuyeron las complicaciones postoperatorias.
Incidencia y factores en la aparición de lesiones por presión y asociadas a la humedad en pacientes con COVID-19
Authors: Helguero Valverde Beatriz , Cruz Braojos Azucena , López Calvo María Piedad , Neria Serrano Fernando
Published: October 2024

Objetivo: Identificar la incidencia y los factores influyentes en la aparición estas lesiones en unidades de hospitalización de adultos con diagnóstico COVID-19.
Metodología: Estudio observacional, longitudinal, retrospectivo donde se han utilizado variables demográficas y clínicas de 2564 pacientes ingresados por COVID-19  entre 2020-2022. Se ha empleado la T de Student o el de Chi cuadrado para valorar las diferencias entre grupos  y se han desarrollado modelos de regresión logística.
Resultados: La letalidad por COVID-19 en la muestra fue del 11,6%. La incidencia de LCRD fue del 8,7% siendo mayor  en UCI respecto a plantas de hospitalización (31.5% vs 6.4%). Se han realizado modelos de regresión logística obteniéndose “días de ingreso” y “Autonomía para la actividad” como las más determinantes para la aparición de cualquier herida.
Conclusiones: la localización de: sacro, mamas, talones, orejas, comisura labial y mentón se muestran como lugares frecuentes de aparición de lesiones. Días de ingreso y autonomía del paciente son factores más influyentes para el desarrollo de cualquier lesión.
ANÁLISE DE PRODUÇÃO DA EMPRESA TILATINS SOBRE O DESENVOLVIMENTO DE TILÁPIAS EM TANQUE REDE, EM LAJEADO - TO”
Authors: Nascimento Alice Carvalho do , Farias Ana júlia Lustosa , Abreu João Inácio Ribeiro , Louça Josias Barbosa , CABRAL NETO OTAVIO , Goncalves Antônio Carlos Silveira
Published: October 2024

O presente artigo é realizado através de um estudo de caso diante dos serviços realizados na empresa Tilatins, que fica localizada no município de Lajeado/ TO e tem como objetivo a criação de tilápias para exportação no comércio estadual e nacional. Os peixes são criados e zelados através de métodos como a utilização de tanques-redes, ração controlada e checagem manual como a inspeção de qualidade dos animais. A estrutura produtiva da Tilatins é robusta, com balsa de manejo, tanques-rede de alta qualidade, silos, embarcações de manejo e  uma fábrica de gelo para apoiar o processo produtivo. Além da revisão bibliográfica minuciosa, os dados  foram coletados através de uma análise qualitativa, com combinações de observações e entrevistas na unidade de produção com João Victor Labre Morais, CEO responsável pela propriedade. Os resultados apresentaram indicadores positivos para o cultivo de tilápias em tanques-rede, acesso a informações e a integração dos três pilares da sustentabilidade, embora enfrentem desafios como a necessidade de monitoramento constante, invasões por pescadores, e fornecedores não puros. No entanto, a empresa destaca-se pela sustentabilidade de suas práticas, sendo economicamente viável e socialmente estruturada, contribuindo para a redução da fome e a geração de emprego e renda.
IMPACTOS DO USO DE CHUPETA E MAMADEIRAS NA DENTIÇÃO E NO DESENVOLVIMENTO CRANIOFACIAL
Authors: Silva Arcanjo Eros Caio , Galvão Nunes De Almeida Patricia Karine , De Sá Machado Oliveira Ísis Cecília
Published: October 2024

O objetivo deste estudo é analisar os impactos do uso prolongado de chupetas e mamadeiras no desenvolvimento da dentição decídua e craniofacial de crianças, destacando o papel do cirurgião-dentista na prevenção e tratamento dessas alterações. A metodologia utilizada foi uma revisão integrativa de literatura, abrangendo estudos publicados entre 2014 e 2024, selecionados nas bases SCIELO, LILACS, PubMed, Science Direct, e Biblioteca Virtual em Saúde. Os resultados indicam que o uso prolongado de chupetas e mamadeiras está associado a más oclusões, como mordida aberta anterior e mordida cruzada posterior. Além disso, há uma correlação significativa entre o uso desses dispositivos e a ocorrência de distúrbios respiratórios, de fala e desenvolvimento ósseo irregular. Crianças amamentadas por mais de seis meses mostraram uma menor prevalência de uso de chupeta, enquanto aquelas que utilizam chupeta por mais de um ano têm maior probabilidade de desenvolver más oclusões. Em conclusão, o estudo ressalta a importância de intervenções preventivas e educativas desde os primeiros anos de vida. Programas educativos direcionados aos pais e cuidadores podem desempenhar um papel crucial na redução da prevalência de hábitos bucais deletérios e, consequentemente, na promoção da saúde bucal e craniofacial das crianças. É essencial que os profissionais de odontologia estejam atentos e atuem de forma proativa na orientação e tratamento das crianças para prevenir e mitigar os impactos negativos desses hábitos.
PRAES: Estrategia Integradora Comunitaria Para La Solución De Problemas Ambientales En Las Localidades De Montería, Contribuyendo A Las Políticas Públicas
Authors: Agudelo Nisperuza Alonso de Jesús , Peniche Villadiego Igor Julio , Martínez Abad Ovidio Rafael , Patrouilleau Barrera Hussein Amain , Moros López Julieth Esperanza
Published: October 2024

La investigación analiza la contribución de los Programas de Recuperación Ambiental Escolar (PRAES) a la política de construcción de Montería Ciudad Verde, con el objetivo de evaluar su impacto en el cambio de paradigmas ambientales y en el comportamiento ambiental de los ciudadanos, buscando la sostenibilidad urbana. La estrategia PRAE implica investigaciones en áreas cercanas a instituciones educativas, generando cambios sociales y siendo clave para cumplir la política ambiental de Montería. El proceso metodológico incluyó la recolección de información mediante revisión documental y trabajo de campo, adoptando un enfoque interpretativo y mixto. Se realizaron encuestas a instituciones educativas, Juntas de Acción Comunal y entidades municipales. Se concluye que los PRAES no aportan significativamente a la política ambiental debido a fracturas entre los actores involucrados, impidiendo integración y sinergias. Se destaca la necesidad de soluciones ambientales locales para lograr una sociedad sostenible en Montería.
THE NECESSARY TEMPERATURE AND MAGNETIC FIELD LEVELS TO OBSERVE THE QUANTUM RIGI – LEDUC EFFECT IN GRAPHENE NANORIBBONS
Authors:   Ulyanovsk State Technical University, Shiryaev A.D. , Brazhe R.A. ,   Ulyanovsk State Technical University
Published: October 2024

The possibility of the existence of integer and fractional Rigi–Leduc quantum effect in graphene nanoribbons is discussed.
ANALOG MODELING OF CONTINUOUS AND DISCRETE SYSTEMS
Authors:   Saratov Branch of the Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Ponomarenko V.I.
Published: October 2024

The principles of analog modeling of continuous systems described by systems of first-order differential equations and systems described by discrete maps are presented. Simple oscillatory systems are considered as examples, as well as more complex equations of the Lorenz system and the Hindmarsh-Rose neuron, onedimensional logistic map and one-dimensional complex map.
STUDY OF THE POSSIBILITY OF BREATHER FORMATION IN COLLISION OF KINK AND ANTIKINK IN A GRAPHENE-BASED SUPERLATTICE
Authors:   Volgograd State Technical University, Zlochevskiy I.I. , Zav’yalov D.V. ,   Volgograd State Technical University, Konchenkov V.I. ,   Volgograd State Technical University
Published: October 2024

The results of the numerical solution of the sine-Gordon equation in a generalized form are presented, describing the propagation of electromagnetic waves in a graphene superlattice, with the aim of determining the possibility of the formation of a breather during the collision of a kink-antikink pair with different speeds.
PRODUCTION OF EPOXY NANOCOMPOSITES WITH GRAPHENE
Authors:   Ulyanovsk State Technical University, Antipova I.A. , Makarova I.A. ,   Ulyanovsk State Technical University, Buzaeva M.V. ,   Ulyanovsk State Technical University
Published: October 2024

The features of the formation of polymer nanocomposites are considered and a technique for producing nanocomposites based on epoxy resins and graphene plates is described. The effect of graphene nanoparticles on the physico-mechanical properties of a polymer composite material based on epoxy resin and fiberglass is investigated.
LOCALIZATION OF ELECTROMAGNETIC RADIATION IN SINGLE- AND DOUBLE-WALLED CNT
Authors:   Ulyanovsk State University, Afanas’ev S.A. , Zaitsev V.A. ,   Ulyanovsk State University, Moiseev S.G. ,   Ulyanovsk State University, Sannikov D.G. ,   Ulyanovsk State University, Tertyshnikova G.V. ,   Ulyanovsk State University
Published: October 2024

For eigenwaves in single- and double-walled carbon nanotubes, the dispersion equation obtained within the framework of the hydrodynamic model taking into account the attenuation in the system is solved. The obtained dispersion curves for surface plasmon polaritons reveal the appearance of a cutoff for modes with azimuthal indices m ≥ 1. The distribution of the electromagnetic field modulus in single- and double-walled carbon nanotubes is analyzed. The possibilities of practical application of CNTs in compact amplifiers and generators of coherent radiation are discussed.
INVESTIGATION OF OPTICAL CHARACTERISTICS OF NANOPHOTON SYSTEMS BASED ON A NANOMATERIAL WITH A QUASI-ZERO EFFECTIVE REFRACTIVE INDEX
Authors:   Ulyanovsk State University of Education, Altunin K.K. , Tolyanina Z.A. ,   Ulyanovsk State University of Education
Published: October 2024

The results of investigation of the optical characteristics of nanophotonic systems based on nanomaterials with a quasi-zero effective refractive index are presented. The optical properties of nanocomposite structures with quasi-zero values of the effective complex refractive index in a wide optical wavelength range are considered.
INVESTIGATION OF OPTICAL CHARACTERISTICS OF NANOPHOTON SYSTEMS BASED ON A NANOMATERIAL WITH A QUASI-ZERO EFFECTIVE DIELECTRIC PERMITTIVITY
Authors:   Ulyanovsk State University of Education, Altunin K.K. , Pavlova E.S. ,   Ulyanovsk State University of Education
Published: October 2024

The results of investigation of optical characteristics of nanophotonic systems based on a nanomaterial with a quasi-zero effective permittivity are presented. The results of numerical calculations of the optical characteristics of nanocomposite structures with quasi-zero dielectric constant are considered.
IMPORTANCE OF SIMULATION IN THE DEVELOPMENT OF RADIO ELECTRONICS
Authors:   Penza State University, Lunkina A.V. , Malysheva K.V. ,   Penza State University
Published: October 2024

An analysis of the modeling process in the development of new samples of radioelectronic equipment is presented. Ways to reduce material and time costs in product development have been identified. The main types of models that have the greatest effect in assessing the reliability of radio-electronic equipment are shown.
CREATION OF A LABORATORY WORKSHOP ON THE DISCIPLINE «OPTICAL DEVICES IN RADIO ENGINEERING»
Authors:   Ulyanovsky State Technical University, Bychek E.D. , Dulov O.A. ,   Ulyanovsky State Technical University
Published: October 2024

The functional of a laboratory workshop for remote study of material on the discipline «Optical devices in radio engineering» is considered. The process of performing laboratory work on the topic "Solar panels" is shown. The process of studying the dependence of the output current on the tilt of the panel is presented.
SPECIAL SIGNAL FORM GENERATOR
Authors:   Ulyanovsk state technical university, Salmanova E.A. , Dulov O.A. ,   Ulyanovsk state technical university
Published: October 2024

This article presents the development and research of a special signal form generator designed to assess the thermophysical parameters of high-power bipolar transistors. The structure and operating principles of the device are described, including its main components: a low-frequency generator, a linear voltage ramp generator, a summator, an amplifier, and a comparator. The generator produces a signal that is a combination of a linear voltage ramp and harmonic voltages, which is necessary for testing transistors in terms of their quality and reliability. The article provides the results of modeling and experimental verification of the generator's operation, as well as discusses its technical characteristics and potential practical applications in the context of quality control of electronic components. A schematic of the generator has been developed and implemented, ensuring the generation of special form signals with an amplitude of up to 150 V and a rise rate of up to 75 V/s.
RESEARCH OF THE INFLUENCE OF MICROSTRIP STRUCTURE TOPOLOGY ON THEIR ELECTRICAL CHARACTERISTICS
Authors:   Ulyanovsk State Technical University, Kolotilov A.A. , Klimovsky A.B. ,   Ulyanovsk State Technical University
Published: October 2024

The report presents the results of a research of the influence of changes in the geometric parameters of the topology of a low-pass microstrip filter on its electrical characteristics.
REVIEW OF SUBSTRATE MATERIALS FOR MICROSTRIP MICROWAVE DEVICES
Authors:   Ulyanovsk State Technical University, Yanova V.A. ,   AO «NPP «Zavod Iskra», Kolotilov A.A. ,   Ulyanovsk State Technical University
Published: October 2024

This report provides a review of substrate materials for microstrip production. Key requirements for the materials considered are given.
OVERVIEW OF COMPUTER-AIDED DESIGN SYSTEMS FOR HIGH-FREQUENCY AND ULTRA-HIGH-FREQUENCY RANGES
Authors:   Ulyanovsk State Technical University, Kuzmin A.E. ,   AO «NPP «Zavod Iskra», Kolotilov A.A. ,   Ulyanovsk State Technical University
Published: October 2024

This report provides examples of various computer-aided design systems for high-frequency and ultra-high-frequency devices. These programs simplify the design process, provide a high level of automation, improve accuracy of calculations and prevent errors.
DEVELOPMENT OF ALTERNATIVE ENERGY SOURCES BASED ON RECTENN FOR POWER SUPPLY OF EQUIPMENT AND THE USE OF RECTENN TO FORM THE ANTENNA PART OF DIGITAL ANTENNA ARRAYS OF THE 6G GENERATION
Authors:   Lomonosov Moscow State University, Sokolov V.S. , Maskalskay A.S. ,   Institute of Geography of the Russian Academy of Sciences, Stepanov M.V. ,   LLC «KSS Alternative», Sokolova Zh.V. ,   LLC «KSS Alternative», Kukshin A.I. ,   LLC «KSS Alternative», Yudin V.V. ,   LLC «KSS Alternative»
Published: October 2024

Currently, there is an increasing need for the introduction of alternative energy sources in various sectors of the Russian economy. The development of alternative energy sources based on rectenn is proposed for the power supply of equipment. Rectenna (from the English Rectifying antenna — rectifying antenna) is a device that is a nonlinear antenna designed to convert the field energy of an electromagnetic wave (EMW) incident on it in the optical range (UV, V, IR: λ=0.1÷40.0 µm) into DC energy.
TTC OF ALTERNATIVE ENERGY SOURCES BASED ON RECTENN FOR POWER SUPPLY OF EQUIPMENT AND THE USE OF RECTENN FOR THE FORMATION OF THE ANTENNA PART OF DIGITAL ANTENNA ARRAYS OF THE 6G GENERATION
Authors:   Lomonosov Moscow State University, Sokolov V.S. , Maskalskay A.S. ,   Institute of Geography of the Russian Academy of Sciences, Stepanov M.V. ,   LLC «KSS Alternative», Sokolova Zh.V. ,   LLC «KSS Alternative», Kukshin A.I. ,   LLC «KSS Alternative», Yudin V.V. ,   LLC «KSS Alternative»
Published: October 2024

Currently, there is an increasing need for the introduction of alternative energy sources in various sectors of the Russian economy. The development of alternative energy sources based on rectenn is proposed for the power supply of equipment. Rectenna (from the English Rectifying antenna — rectifying antenna) is a device that is a nonlinear antenna designed to convert the field energy of an electromagnetic wave (EMW) incident on it in the optical range (UV, V, IR: λ=0.1÷40.0 µm) into DC energy. The tactical and technical characteristics (TTС) of promising rectenn-based devices are presented.
THE ENTRANCE DOOR REMOTE CONTROL SYSTEM
Authors:   Ulyanovsk State Technical University, Struchkovsky E.V. , Dulov O.A. ,   Ulyanovsk State Technical University
Published: October 2024

A remote control system for the front door is considered. The problem areas of modern systems have been studied, and their functionality has been worked out. Sensors are presented for the correct operation of the door opening system.
SEMICONDUCTOR PULSE MODULATOR SHAPER FOR POWERING HIGH-POWER MICROWAVE EVP
Authors:   Ulyanovsk Mechanical Plant, Sazonov P.S.
Published: October 2024

A pulse generator for a semiconductor pulse modulator with a transformer voltage control circuit between separate MOSFET for powering high-power microwave vacuum devices with pulse modulation via a control electrode is presented.
PROCESS QUALITY ANALYSIS MANUFACTURING OF PHASE SHIFTER WITH MICROWAVE DIODE 2А528А-4
Authors:   Ulyanovsk State Technical University, Liakhov A.V. , Fokin O.S. ,   Ulyanovsk State Technical University
Published: October 2024

The results of the analysis of the quality of the manufacturing process of the phase shifter and the identification of patterns in the distribution of diode failures in the manufacturing process for individual operations are presented. Identifying patterns of failures based on verification thermal resistance Rt
DEVELOPMENT OF THE STRUCTURE OF THE PROTOTYPE OF AN INTELLIGENT VIDEO SURVEILLANCE DEVICE
Authors:   Kazan National Research Technical University named after A.N. Tupolev – KAI, Ageev E.S. , Moiseev N.M. ,   Kazan National Research Technical University named after A.N. Tupolev – KAI, Nikishin T.P. ,   Kazan National Research Technical University named after A.N. Tupolev – KAI
Published: October 2024

This paper describes the development of a prototype of an intelligent video surveillance device that combines the functions of a traditional door peephole with modern video surveillance and Internet of Things technologies. The structural diagram of the device and its scope of application are described.
OPTICAL PROPERTIES OF A MEMRISTIVE COMPOSITE BASED ON TITANIUM OXIDE NANORODS AND SILVER NANOPARTICLES
Authors:   National Research University of Electronic Technology, Vasilevskaya Yu.O. ,   SMC «Technological Centre», Saurov M.A. ,   National Research University of Electronic Technology,   SMC «Technological Centre», Kruzhalina M.D. ,   National Research University of Electronic Technology
Published: October 2024

A technology for creating a memristive composite sensitive to laser radiation has been proposed. The composite is a film made of nanostruЕctured TiO2 and silver nanoparticles, located in the gap between gold electrodes on a planar two-terminal structure. The sensitivity of the composite to laser radiation with different wavelengths has been evaluated. It has been found that the switching between high and low conductivity states in the sample is caused by the simultaneous application of electrical and optical signals. This makes it possible to consider this composite as a potential platform for developing optoelectronic memristive systems for neuromorphic vision.
THE POSSIBILITIES OF OPTIMIZING THE OPERATING MODE OF CMOS DIGITAL INTEGRATED CIRCUITS FOR MEASURING THEIR TRANSIENT THERMAL CHARACTERISTICS
Authors:   Ulyanovsk State Technical University, Trukhin M.V. , Sergeev V.A. ,   Ulyanovsk State Technical University,   Ulyanovsk Branch of the Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Chertoriysky A.A. ,   Ulyanovsk State Technical University,   Ulyanovsk Branch of the Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences
Published: October 2024

The results of measurements of the transient thermal characteristics (TTC) of CMOS digital integrated circuits (DIC) for using the voltage out low and voltage out high as temperature-sensitive parameters (TSP) are presented. Options for improving the accuracy of measuring the CMOS TTC DIC at a low supply voltage are considered.
MODELING AND EXPERIMENTAL STUDY OF SPIN WAVES IN A YIG FILM WITH MAGNETITE NANOPARTICLES ON THE SURFACE
Authors:   Saratov State University, Garanin F.E. , Lomova M.V. ,   Saratov State University, Sadovnikov A.V. ,   Saratov State University
Published: October 2024

The paper presents the results of micromagnetic modeling based on the numerical solution of the Landau–Lifshitz–Gilbert equation of a magnonic microwave guide with an array of magnetic elements on its surface. The possibility of controlling the characteristics of spin wave propagation in a structure with magnetite nanoparticles based on an iron–yttrium garnet film on a gallium–gadolinium garnet substrate by changing the direction of the external magnetic field is studied. It is shown that the proposed configuration allows for the control of spin-wave signals, which opens up the possibility of application in magnonic logic and sensorics.
CONTROL OF SPIN WAVE PROPAGATION BY LASER RADIATION IN AN IRREGULAR U-SHAPED STRUCTURE
Authors:   Saratov State University, Gubanov V.A. , Sadovnikov A.V. ,   Saratov State University
Published: October 2024

The results of the study of spin waves in an irregular structure controlled both by the orientation of the external magnetic field and by the application of laser heating to the rounding region of the irregular U-shaped structure are presented. It is shown that the considered wave-guiding structure can be used as a logic element of the ‘key’ type.
INVESTIGATION OF SEMICONDUCTOR HETEROSTRUCTURES WITH NANOSCALE LAYERS USING DYNAMIC SECONDARY ION MASS SPECTROMETRY
Authors:   Ioffe Institute, Tokarev M.V. , Ber B.Ya. ,   Ioffe Institute, Kazantsev D.Yu. ,   Ioffe Institute, Mamutin V.V. ,   Ioffe Institute
Published: October 2024

The results of characterization of the quantum cascade heterostructure laser based on AlInAs/GaInAs system emitting at a wavelength of 5 microns are presented. The use of dynamic secondary ion mass spectrometry for analyzing modern semiconductor heterostructures has been shown to be effective in determining the concentrations of both basic and impurity elements in nanoscale layers.
TEMPERATURE DEPENDENCIES OF ELECTRIC RESISTANCE AND MAGNETORESISTIVE PROPERTIES OF THIN-FILM NANOCOMPOSITES CoFe-MgF2
Authors:   Voronezh State Technical University, Tregubova T.V. , Ampilogov A.V. ,   Voronezh State Technical University
Published: October 2024

The results of the study of electrical resistance under the influence of hightemperature heating in vacuum and magnetoresistive properties of the thin-film system obtained by ion-beam sputtering are presented. It is revealed that in the composition of the composite, close to percolation, the maximum values of magnetoresistance are manifested and the effect of high temperature in vacuum provokes changes in electrical properties.
WAVE REFLECTION FROM THE BOUNDARY OF A LINEAR MEDIUM AND A MEDIUM WITH KERR NONLINEARITY AT NORMAL INCIDENCE
Authors:   Research Technological Institute named after S.P. Kapitsa, Evseev D.A. ,   Ulyanovsk State University, Eliseeva S.V. ,   Research Technological Institute named after S.P. Kapitsa,   Ulyanovsk State University
Published: October 2024

The results of numerical modeling of the reflection of a Gaussian signal from a flat boundary of a medium with Kerr nonlinearity at normal incidence are presented. The presence of several exact solutions of a wave quasilinear PDE with Kerr nonlinearity is shown.
TERAHERTZ RADIATION SPECTRA OF A SYMMETRIC GRAPHENE PHOTONIC CELL WITH FERROELECTRIC FILLING
Authors:   Ulyanovsk State University, Eliseeva S.V. , Evseev D.A. ,   Ulyanovsk State University
Published: October 2024

The transformation of the reflection, transmission and absorption (amplification) spectra of linearly polarized TM radiation of a symmetric photonic cell consisting of two layers of semiconductor, two layers of graphene and a layer of ferroelectric is considered in the paper. Amplification is observed in the near terahertz range, when the imaginary part of the permittivity of graphene becomes negative. Photonic spectra can be controlled by changing the Fermi energy of graphene layers, the external magnetic field, as well as the temperature, and material parameters of the ferroelectric layers.
EVALUATION OF THE FATIGUE LIFE OF THE SOLDERED CONNECTION OF THE LED MATRIX WITH A BASE
Authors:   Ulyanovsk Branch of the Kotelnikov Institute of Radio-Engineering and Electronics of Russian Academy of Sciences, Hodakov A.M. , Sergeev V.A. ,   Ulyanovsk Branch of the Kotelnikov Institute of Radio-Engineering and Electronics of Russian Academy of Sciences,   Ulyanovsk State Technical University, Shuravin A.D. ,   Ulyanovsk Branch of the Kotelnikov Institute of Radio-Engineering and Electronics of Russian Academy of Sciences, Zaitsev S.A. ,   Ulyanovsk Instrument Manufacturing Design Bureau, Frolov I.V. ,   Ulyanovsk Branch of the Kotelnikov Institute of Radio-Engineering and Electronics of Russian Academy of Sciences,   Ulyanovsk State Technical University
Published: October 2024

Using the developed thermomechanical model, the temperature field and deformation movements of the layers of the LED matrix structure are determined. Calculations of the durability of the solder layer from the heat power dissipated by the LED matrix for three temperature modes of thermal cycling are carried out.
SrIrO3 AS A PROMISING MATERIAL FOR OBSERVING INVERSE HALL EFFECT
Authors:   Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Nagornykh K.E. ,   Moscow Institute of Physics and Technology, Ulev G.D. ,   Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences,   National Research University «Higher School of Economics», Baydikova V.A. ,   Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences,   MIREA – Russian Technological University, Moscal I.E. ,   Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Petrzhik A.M. ,   Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Dubitskiy N.V. ,   Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Constantinian K.I. ,   Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Ovsyannikov G.A. ,   Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Shadrin A.V. ,   Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences,   Moscow Institute of Physics and Technology
Published: October 2024

The results of the fabrication, electrical and physical properties and X-ray diffraction analysis of iridate (SrIrO3) films and the observation of the inverse spin Hall effect in SrIrO3/ferromagnetic heterostructures are presented. Thin films and heterostructures are grown epitaxially on NdGaO3 and SrTiO3 substrates. A method for fabrication these materials is presented. A dependence of resistance on temperature and transverse resistance caused by the presence of spin-orbit interaction in the material were revealed.
MICROMECHANICAL CONTROL OF SPIN WAVE DYNAMICS IN A WAVEGUIDE WITH A ZIGZAG GEOMETRIC SECTION
Authors:   Saratov State University, Filchenkov I.O. , Zyuzin V.A. ,   Saratov State University, Sadovnikov A.V. ,   Saratov State University
Published: October 2024

The results of numerical modeling of surface magnetostatic wave propagation in a periodic magnon crystal made of iron-yttrium garnet with (YIG) geometrical inhomogeneity in the form of characteristic zigzag fractures are presented. It is shown that such geometrical inhomogeneity is able to demonstrate the appearance of forbidden zones of the spin wave even at a small number of periods. The use of a rhomboidal YIG resonator was proposed as a control of the frequency composition of the spin wave. By changing the location of the YIG resonator relative to the zigzag waveguide, it is possible to achieve a change in the composition of the forbidden zones.
FARADAY EFFECT IN THREE-PERIODIC PHOTONIC CRYSTALS
Authors:   Galkin Donetsk Institute for Physics and Engineering, Panyaev I.S. ,   Ulyanovsk State University, Glukhov I.A. ,   Galkin Donetsk Institute for Physics and Engineering,   Ulyanovsk State University,   Ulyanovsk Branch of the Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Sannikov D.G. ,   Galkin Donetsk Institute for Physics and Engineering,   Ulyanovsk State University, Dadoenkova Y.S. ,   Laboratoire Hubert Curien, Université Jean Monnet, Saint-Etienne, France, Dadornkova N.N. ,   Galkin Donetsk Institute for Physics and Engineering
Published: October 2024

The Faraday effect in one-dimensional three-periodic magnetic photonic crystals (PCs) based on SiO2, TiO2 dielectrics and Y3Fe5O12 (YIG) and Bi:YIG ferrite garnets is theoretically investigated. The transmission spectra of near-IR electromagnetic waves (EMW) passing through the PCs magnetized perpendicular to the layers (polar magneto-optical configuration) within the first photonic band gap (PBG) are calculated. It is shown that at a telecommunication wavelength of 1.55 μm, for certain PC parameters and EMW incidence angles, the Faraday rotation (FR) angles can reach tens of degrees at sufficiently high transmission coefficients, which can be promising for the application of these structures in various photonic devices.
MOBILE DEVICE FOR CONTROL OF IRON CONTENT IN HYDRAZINE-BASED ROCKET FUEL USING A NEURAL NETWORK
Authors:   Volsky Military Institute of Material Support, Galkin V.B. , Kalashnikov N.A. ,   Volsky Military Institute of Material Support
Published: October 2024

A variant of this operational control device was considered, as a result of which a certain part of dissolved iron was detected in hydrazine-based rocket fuel using a neural network.
ON THE QUESTION OF THE DEVELOPMENT OF BAROMETRIC ALTIMETERS TAKEN INTO ACCOUNT THE HIGH DEPENDENCIES OF THE COMPOSITION AND TEMPERATURE OF THE ATMOSPHERE
Authors:   Ulyanovsk Civil Aviation Institute, Ivashchenko I.E. , Efimov V.V. ,   Ulyanovsk Civil Aviation Institute, Efimova I.A. ,   Ulyanovsk Civil Aviation Institute
Published: October 2024

An analytical dependence of air pressure on altitude was obtained, taking into account the altitude dependencies of the composition and temperature of the atmosphere. The results of a comparative analysis of atmospheric pressure values calculated in wide ranges of air temperature and height above the Earth’s surface using standard and refined barometric formulas are presented..
OPTIMIZATION HYPERSPECTRAL CAMERA WITH SWIR-BAND LED ILLUMINATION
Authors:   National University of Science and Technology «MISIS», Kobzev E.I. ,   OJSC «Optron», Rabinovich O.I. ,   National University of Science and Technology «MISIS», Borichok V.V. ,   OJSC «Optron», Savchuk A.A. ,   OJSC «Optron», Chelny A.A. ,   OJSC «Optron»
Published: October 2024

The results of the study of peculiarities of application of short-wave infrared (SWIR) LEDs as the basis of illumination for hyperspectral camera are presented, the optimal number of LEDs is calculated, and also their spectral composition and location in space for illumination for conveyor belt are determined.
ESTIMATION OF ELECTROOPTIC RESPONSE OF ULTRAWIDEBAND INTEGRATED OPTICAL MODULATORS BASED ON S-PARAMETERS OF MODULATOR ELECTRODES WITHOUT OPTICAL COUPLING
Authors:   Ioffe Institute, Parfenov M.V. , Varlamov A.V. ,   Ioffe Institute, Tronev A.V. ,   Ioffe Institute, Agruzov P.M. ,   Ioffe Institute, Ilichev I.V. ,   Ioffe Institute, Shamrai A.V. ,   Ioffe Institute
Published: October 2024

A method for fast estimation of electrooptic frequency response of integrated optical traveling wave modulators is presented. It is based on measurement of Sparameters of modulator electrodes and results of simulation of optical waveguide of the modulator only and does not need direct light coupling. The presented approach has been successfully demonstrated for experimentally fabricated modulators on thin-film lithium niobate substrates. The correspondence between estimated and directly measured frequency dependencies of electrooptical response of modulators has been shown.
SELECTING AN APPROXIMATION FUNCTION TO DETERMINE THE THRESHOLD CURRENT BASED ON THE RESULTS OF MEASUREMENTS OF THE P-I CHARACTERISTIC OF A LED
Authors:   Ulyanovsk Branch of the Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Radaev O.A. , Frolov I.V. ,   Ulyanovsk Branch of the Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences,   Ulyanovsk State Technical University, Sergeev V.A. ,   Ulyanovsk Branch of the Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences,   Ulyanovsk State Technical University
Published: October 2024

The accuracy of approximation of P-I characteristics of LEDs by different functions at different noise levels of the photodetector was studied. It was shown that the smallest error in determining the threshold current is achieved when approximating the P-I characteristic by a function obtained on the basis of the ABC model of charge carrier recombination in a heterostructure.
RADIO WAVE ATTENUATION METER FOR ANTENNA FAIRINGS
Authors:   Mirea – Russian Technological University, Arestov V.V.
Published: October 2024

The article is devoted to the study of the process of radio wave attenuation of antenna fairings. One of the main problems is the choice of the fairing design, which significantly affects further measurements under various weather conditions.
A DEVICE FOR DETERMINING THE TEMPERATURE OF THE SPATIAL CHARGE AREA OF LEDs
Authors:   Moscow Polytechnic University, Varlamov D.O. , Nikolaev V.K. ,   Moscow Polytechnic University, Manyakhin F.I. ,   Moscow Polytechnic University, Skvortsov A.A. ,   Moscow Polytechnic University
Published: October 2024

The principle of operation and block diagram of a device for determining the temperature of the spatial charge region of LEDs based on recording the dynamics of changes in direct voltage during pulsed direct current heating and subsequent cooling of LEDs are described. The results of experimental studies of low-power GNL-3014PGC LEDs are presented.
DEVELOPMENT OF BUFER AMPLIFIER OF THE ULTRASONIC DEVICE FOR DIAGNOSIS OF OSTEOPOROSIS
Authors:   Tomsk State University of Control Systems and Radioelectronics, Soldatov A.I. ,   Tomsk Polytechnic University, Sergeyev K.V. ,   Tomsk Polytechnic University
Published: October 2024

In this work, as part of work on development of ultrasound device for diagnostic of osteoporosis, the results of development of bufer aplifier as part of device, according to block diagram, was presented. The principes and logic of work of bufer aplifier was described. The selection and calculation of circuit elements was carried out. A schematic diagram of the buffer amplifier, oscillograms and a printed circuit board are shown.
DEVELOPMENT OF A SYSTEM FOR DYNAMIC AUDIO INFORMATION ANALYSIS BASED ON SPECTROGRAMS AND VISUALIZATION OF LIGHT EFFECTS
Authors:   Derzhavin Tambov State University, Ponomarev A.A. , Solovjev D.S. ,   Derzhavin Tambov State University
Published: October 2024

The main problems in implementing systems for dynamic analysis of audio signals based on microcontrollers that perform analysis based on fast Fourier transform are presented, and the optimal choice of a microcontroller for implementing such systems is demonstrated. The implementation of the dynamic analysis system control interface, consisting of two ESP32 microcontrollers, is considered.
AUTOMATION OF MEASUREMENTS OF DIELECTRIC AND MAGNETIC PERMITTIVITY FOR THE PURPOSE OF DETERMINING THE PROPERTIES OF MATERIALS
Authors:   Ulyanovsk State Technical University, Fokin Y.O.
Published: October 2024

The methods of automation of measurements of complex permittivity and magnetic permeability for the correct determination of parameters, properties of materials using certain methods are described.
TEMPERATURE SENSOR WITH NON-CONTACT METHOD OF INFORMATION TRANSMISSION
Authors:   Ulyanovsk Mechanical Plant, Kazankov A.A. ,   Ulyanovsk Branch of the Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences,   Ulyanovsk State Technical University, Kuzmin N.P. ,   Ulyanovsk Branch of the Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences,   Ulyanovsk State Technical University, Sergeev V.A. ,   Ulyanovsk Branch of the Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences,   Ulyanovsk State Technical University
Published: October 2024

The structural scheme is presented and the principle of operation of the temperature sensor using resonant magnetically coupled circuits is described, through which the electrical energy for supplying the temperature sensor and measurement information is transmitted. The sensing element of the sensor is implemented on the basis of the digital integrated circuit NST1001, the output signal of which is a sequence of pulses, the number of which is proportional to the value of the measured temperature.
FOLDING FORCE CONTROL STAND FOR CAR REAR VIEW MIRRORS
Authors:   Ulyanovsk State Technical University, Shuravin A.D. , Nizametdinov A.M. ,   Ulyanovsk Branch of the Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Chertoriyskiy A.A. ,   Ulyanovsk Branch of the Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences
Published: October 2024

The bayonet connection pressing stand has been upgraded in order to additionally control the folding force of car rear-view mirrors. The main components of the device are described, as well as the principles of measuring the angles and forces of folding and unfolding the mirror.
MIRROR PRESSING STAND AN ELEMENT IN IN-LINE PRODUCTION CAR REAR VIEW MIRRORS
Authors:   Ulyanovsk State Technical University, Khairullov T.I. , Nizametdinov A.M. ,   Ulyanovsk Branch of the Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Chertoriyskiy A.A. ,   Ulyanovsk Branch of the Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences
Published: October 2024

A stand for pressing the mirror element of the car's rear-view mirror has been developed. The main components of the device are described, as well as the principles of measuring the pressing force and testing for separation of the mirror element.
LASER STABILITY CONTROL WITH THE HELP OF A PERCEPTRON
Authors:   Ulyanovsk State Technical University, Hajrullov M.D. , Itrin P.A. ,   Ulyanovsk State University, Paniaev I.S. ,   Ulyanovsk State University, Sukhov S.V. ,   Ulyanovsk Branch of the Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences
Published: October 2024

We proposed and trained a feedforward neural network (multilayer perceptron) that can be used for the stability control of a semiconductor laser. The developed network was trained to approximate a proportional–integral–derivative (PID) controller. Hyperparameters tuning allowed to achieve mean square error.
ELECTROMAGNETIC FIELD IN THE NEAR ZONE FROM THE THREE-HINGED THURSTON-WEEKS-HUNT-MCKAY MECHANISM WITH FERROELECTRIC INSERT
Authors:   Nizhny Novgorod mathematical society, Bugrov V.O. , Pisarev M.A. ,   HSE University, Rassadin A.E. ,   HSE University
Published: October 2024

The paper considers a mechanoelectrodynamic system, the mechanical part of which is formed by a three-hinged Thurston-Weeks-Hunt-McKay mechanism, and its electrodynamic part is one of the hinges of this mechanism, made of ferroelectric. For the mode when one of the hinges of this mechanism is rigidly fixed, the electric and magnetic fields created by this mechanoelectrodynamic system in the near zone are explicitly calculated.
INTRODUCTION OF ELEMENTS OF ARTIFICIAL INTELLIGENCE INTO THE DECISION-MAKING PROCESS BY THE AIRCRAFT CREW
Authors:   Ulyanovsk Civil Aviation Institute, Gareev I.I. , Lushnikov A.S. ,   Ulyanovsk Civil Aviation Institute
Published: October 2024

The paper presents a software module responsible for simulating airspace. The system implements the display of key airspace elements with the translation of geographic coordinates into two-dimensional space. This module is used in the development of simulators for training air traffic control personnel.
SIMULATION MODELING OF AIR SPACE FOR SIMULATION TRAINING OF AIR CONTROLLERS
Authors:   Samara Ulyanovsk ATS Center of the Central Volga Air Navigation Branch of the FSUE State ATM Corporation, Kostikov E.A. , Evsevichev D.A. ,   Ulyanovsk Civil Aviation Institute, Samokhvalov M.K. ,   Ulyanovsk State Technical University
Published: October 2024

The paper presents a software module responsible for simulating airspace. The system implements the display of key airspace elements with the translation of geographic coordinates into two-dimensional space. This module is used in the development of simulators for training air traffic control personnel.
INTERACTIVE SYSTEM FOR STUDYING RADIO STATION RS 2500V
Authors:   Ulyanovsk Civil Aviation Institute, Kulemin N.V. , Tabachnikov V.D. ,   Ulyanovsk Civil Aviation Institute, Konkin M.V. ,   Ulyanovsk Civil Aviation Institute, Evsevichev D.A. ,   Ulyanovsk Civil Aviation Institute, Samokhvalov M.K. ,   Ulyanovsk State Technical University
Published: October 2024

The article discusses an interactive learning system for the RS 2500V transceiver, developed using the Python programming language. The program allows you to practice your skills in working with such devices while listening to information from automatic information transmission services in the airfield area at the appropriate frequencies.
ASSESSMENT OF THE STATE OF FATIGUE BASED ON VIDEO STREAM PROCESSING
Authors:   Ulyanovsk Civil Aviation Institute, Skok A.V. , Veretennikov M.V. ,   Ulyanovsk Civil Aviation Institute, Znamenskaya K.S. ,   Ulyanovsk Civil Aviation Institute, Evsevichev D.A. ,   Ulyanovsk Civil Aviation Institute, Samokhvalov M.K.
Published: October 2024

This article discusses the creation of an algorithm and program in Python for analyzing the state of fatigue using video stream processing methods. The program is based on the OpenCV and Dlib libraries for highlighting points on the subject’s face, the analysis of which allows one to draw a conclusion about the desired state of the subjects.