bluuebunny/crossref_metadata_2025 huggingface dataset:
MOVING OBJECT DETECTION USING SEMANTIC CONVOLUTIONAL FEATURES
Authors: Mahayuddin Zainal Rasyid , Saif A F M Saifuddin
Published: January 2023

Moving object detection from aerial images remains an unsolved problem in computer vision research domain. Detection results are not precise due to blurry aerial images, thin edges and noise. Various methods were previously proposed for moving object detection which could not provide robust results due many challenges, i.e., noise, motion detection, lack of appropriate features, lack of effective classification approach, complex background and variations in illumination. This research proposes an efficient method for moving object detection using convolutional semantic features from VGG-16 to use motion patterns to facilitate detection in each frame and provides smaller area as region of interest. Proposed method reduces probability motion intensity information getting lost in case of same coloured object in the background and thus minimizes background complexity. After that, proposed method performs semantic features distance measurement to calculate linear distances in each frame. In this context, if there is any frame loss due to noise or illumination variation, proposed method uses Kalman filter to process that frame by illuminating noise. Finally, decision for final moving detection is determined using random forest classifier from semantic convolutional feature vector by generating a set of probabilities for each class. Experimental results show that the proposed method can detect moving objects efficiently, which in turn will decrease the operating time and increase the detection rate compared to previous research methods.
CONVEYING ASMAUL HUSNA'S KNOWLEDGE VIA MOBILE APP FOR UNDERGRADS: HYBRIDIZING SIGNALING PRINCIPLE AND NIELSEN'S DESIGN GUIDELINES
Authors: Rosmani Arifah Fasha , Abdul Mutalib Ariffin , Sarif Siti Mahfuzah
Published: January 2023

With the evolution of mobile innovation, teaching asmaul husna to be engaging and exciting is possible. Therefore, this study aims to plan and develop a mobile app to effectively and competently prepare undergraduate students to learn asmaul husna. Signaling principles are chosen for this mobile application, as it is a very persuasive idea in digital learning in the same manner as Nielsen's design guidelines in the field of interaction design. (i) Asmaul Husna; (ii) Huraian Makna; (iii) Solusi Kehidupan and (iv) Kuiz Kefahaman, four separate parts of AHMA-SP (Asmaul Husna Mobile Application). This research presents an elective way to encourage students to learn asmaul husna and enhance their ability to memorize the definition of asmaul husna and their everyday life applications. It is evident from the test results provided on the level of knowledge through pre-test and post-test that there is a substantial improvement in this aspect. It is also proof that students have been able to understand the meaning and recall the names of Allah by implementing and incorporating the Signaling Principle and Nielsen's Design Guidelines.
TECHNOLOGY OF ADJUSTING THE HEADER HEIGHT OF THE HARVESTER BY MULTI-SENSOR DATA FUSION BASED ON BP NEURAL NETWORK
Authors: JI Kuizhou , LI Yaoming , Zhang Tao , Xia Shengbo , Cheng Junhui
Published: January 2023

In this paper, BP neural network is used to collect header height, AMEsim is used to simulate and analyze header height adjustment hydraulic system, and fuzzy PID control is used to adjust header lifting hydraulic cylinder to stabilize header height. The experimental results of harvesting different crops show that under the header height automatic control system, the error between the actual height of crop harvesting and the set height is within 15 mm, and the harvesting effect is good, which can meet the automatic regulation requirements of the header height of the multi crop combine harvester.
Pulse-to-pulse ultrafast dynamics of highly photoexcited Ge2Sb2Te5 thin films
Authors: Kobayashi Masataka , Arashida Yusuke , Asakawa Kanta , Kaneshima Keisuke , Kuwahara Masashi , Konishi Kuniaki , Yumoto Junji , Kuwata-Gonokami Makoto , Takeda Jun , Katayama Ikufumi
Published: January 2023

Observing ultrafast pulse-to-pulse dynamics of highly photoexcited materials could foster a comprehensive understanding of the initial stage of irreversible photoinduced events, such as phase change, structural deformation, and laser ablation. In this study, using high-repetition-rate single-shot spectroscopy and a laser microscope, the pulse-to-pulse ultrafast dynamics of energy relaxation in Ge2Sb2Te5 thin films are revealed under high-density photoexcitation that induces sequential events involving the crystalline-to-amorphous phase transition, melt and quench processes, and formation of laser-induced periodic surface structures (LIPSSs). Above the threshold excitation density for LIPSS formation, the first excitation pulse induces the transient transmittance change of the crystalline phase in a picosecond timescale, and subsequent pulses provoke the amorphous phase energy relaxation with a long decay time of hundreds of picoseconds. We observed that the subsequent pulses gradually reduce the amplitude and decay time of the transient transmittance, leading to efficient energy relaxation and LIPSS formation in the photoinduced amorphous phase.
Methodology for the formation of functional literacy in English lessons with the help of pedagogical cues
Authors: Zorina E. M.
Published: January 2023

The article is devoted to theoretical and practical aspects of the methodology for the formation of functional literacy in English lessons. To solve this problem, a review of such educational tools as pedagogical cues is proposed. The practical application of various cues for the formation of specific elements of functional literacy is described. The competencies that need to be improved by future teachers as part of their own training and self-education are given. The connection of functional literacy with the basic skills of future specialists of the 21st century is described. Their development within the technology of content and language integrated learning (CLIL) is proposed
Sistem Informasi Manajemen Kepegawaian Berbasis Website Pada Universitas PGRI Palembang
Authors: Elizabeth Triana , Febriansyah Robby
Published: January 2023

Selama ini informasi pembukaan lowongan pekerjaan belum terpublikasi dengan baik karena tidak adanya tempat sumber informasi yang valid dan resmi dan  bagian HRD mengalami kesulitan dalam mengelola data calon pegawai yang memerlukan waktu yang lama dalam proses penyeleksian. Selain itu rekap data mutasi pegawai yang belum terdokumentasi dengan baik sehingga menyulitkan bagian HRD dalam pencarian data mutasi pegawai. Salah satu solusinya adalah sistem informasi manajemen kepegawaian berbasis website pada Universitas PGRI Palembang yang dapat menghasilkan data recruitment yang tepat dan terdokumentasi, memberikan informasi kepada calon pegawai mengenai lowongan pekerjaan, memberikan informasi mengenai berkas lamaran pekerjaan secara cepat, mempercepat proses penyeleksian calon pegawai, dan dapat mengelola data recruitment, penetapan, pemutusan hubungan kerja, pengunduran diri, mutasi pegawai, sanksi, presensi, pengajuan cuti dan perjalanan dinas. Metodologi pengembangan sistem yang digunakan adalah  metodologi RUP (Rational Unified Process), dan untuk pembuatan aplikasinya menggunakan bahasa pemrograman PHP, HTML, CSS, Javascript sedangkan server menggunakan XAMPP dan MySQL sebagai database.
Recensioni
Authors: IFM Redazione
Published: January 2023

Fabio Clauser (2022) - La parola agli alberi. Nuova edizione. Firenze, Libreria Editrice Fiorentina. (Recensione a cura di Chiara Lisa).

WWF Siena, Grosseto, Livorno, Firenze, Arezzo (2022) - Conoscere il bosco - Guida per connettersi con la natura. (27 pagine). Conoscere il bosco - Quaderno didattico per ragazzi attenti (27 pagine). WWW Editore (Recensione a cura di Chiara Lisa).
Project Delay Factor Ranking among Contractor, Client and Project Management Consultant in Construction Industry
Authors: Asmi Ade , Djamaris Aurino RA
Published: January 2023

A construction project delay can result in financial losses to various parties involved both to the Contractor, Client and Project Management Consultant (PMC). This paper presents the results of a survey questionnaire conducted among Contractors, Clients and PMC. Data was analyzed with statistical tools to rank factors that influenced construction delays. From the results of the analysis there were 58 project delay factors that affected the delay of construction projects based on previous research. The project delay factors ranked so as to produce a project delay ranking sequence. Project delay factors will be grouped based on the perception of the Contractor, Client and PMC. Each project delay factor will be analyzed based on the type of delay factor, namely: Finance; Technical; and Coordination. It is concluded that the type of delay factor "finance" is a problem causing the project delay according to the perception of the "Client". While the type of "Technical" delay factor is the dominant cause of involvement according to the Contractor and PMC. For the type of delay factor "Coordination" is the main consideration for the cause of the project delay for the Contractor.
Managerial Ownership, Leverage, Profitability, Corporate Value: An Interactive Effect In Indonesia Stock Exchange
Authors: Mappadang Agoestina
Published: January 2023

Managerial ownership, firm value and financial characteristic have long been critical issue with regards to company’s financial decision making. If the profitability higher and more assignable profit there and it is the higher value of the firm.  Purpose of this study to analyze how the impact of Managerial Ownership, Leverage, Profitability on the firm value. The population take from companies listed in Indonesian Stock Exchange 2015 - 2019. The population taking from property, real estate and building construction.  This research method using for this study is a purposive sampling with multiple of regression analysis. The result of this research are managerial ownership affects the value of the firm, leverage does not affect the value of the firm and profitability affects on value of the firm. The simultaneous of managerial ownership, leverage and profitability have no significant on  firm value. This study’s Implication will support for stakeholder theory that management as an agent must develop a relationship with stakeholders by embarking on environmental friendly practice to maintain a positive value. Besides, value of the company has created must be prioritized to help the companies enhance their competitive advantage to strengthen on financial performance.
Love for Three Copies: On a Little-Known and Mysterious Play by Anton Chekhov
Authors: Е.А. Иконникова,
Published: January 2023

Рецензируемая монография посвящена пьесе А. П. Чехова «Татьяна Репина». Кратко характеризуется история создания и содержание пьесы, сюжет которой связан с трагической судьбой русской актрисы Евлалии Павловны Кадминой. Отмечено, что один из разделов рецензируемой монографии отражает личную и творческую биографию Е. П. Кадминой, основанную на воспоминаниях современников о ней. С привлечением новых архивных материалов в книге подробно представлена история самоубийства актрисы, положенная в основу сюжета пьесы. Рассматриваемая книга определяется как научная монография, разворачивающая перед читателями исторический и литературный контекст, в котором было создано драматическое произведение. Анализируется текст А. С. Суворина, ставший протопьесой чеховской одноактной драмы и размещенный в рецензируемом издании в качестве приложения. Предполагается, что новое исследование о чеховском творчестве будет способствовать росту читательского интереса к произведениям великого русского писателя и драматурга.

The monograph on Anton Chekhov’s play Tatyana Repina written by Olga Spachil, an associate professor of the Kuban State University, is reviewed. The author of the book reveals the details of the publication of the play: its first edition, published in three copies, is now an extreme bibliographic rarity. She briefly characterizes the history of the creation and the content of the play. The plot of the play is connected with the biography of the Russian actress Eulalia Pavlovna Kadmina. The book reflects not only the tragic fate of the actress, but also touches upon philosophical issues that are revealed through reflections on life and death. The book’s thematic aspect is connected with the perception of the play in other countries and in other historical times. One of the sections of the book reflects Kadmina’s personal and creative biography, based on the contemporaries’ memories about her. Using new factual material collected from the archives, Spachil describes in detail the story of Kadmina’s suicide, which formed the basis of the plot of the play. The author of the book has an individual, creative attitude to her protagonist. The reviewer defines the book as a research monograph that shows the reader the historical and literary context in which the play was created. The text of Aleksey Suvorin, which became the prototype of Chekhov’s one-act play and is placed in the book as an appendix, is analyzed. The reviewer notes the significance for the reviewed book of conferences on Chekhov’s oeuvre that are regularly held on Sakhalin. The reviewer expresses hope that this new book will contribute to the growth of reader interest in the works of the great Russian writer and playwright.
Analisis bibliometrico del capital relacional y su aplicación en un grupo de investigaciones
Authors: Henao Tamayo Leydi Johanna , Franco López Jorge Ariel , Cuartas Ramírez Diego
Published: January 2023

El conocimiento es un activo intangible propio de la sociedad poscapitalista, que ha tomado importancia en las últimas décadas en todos los sectores económicos, conllevando a medirlo y gestionarlo. La investigación aquí presentada partió del interrogante el cual inspiró el trabajo, ¿Cuál ha sido el desarrollo científico en torno al capital relacional y su nivel de aplicación para un grupo de investigación?, el objetivo fue identificar un análisis bibliométrico sobre el capital relacional que aportara un modelo aplicable a un grupo de investigaciones. La investigación fue de tipo exploratorio – descriptivo, la metodología utilizada se desarrolló a través de vigilancia tecnológica, y acercamiento conceptual al modelo intellectus, la validación se efectuó con seis investigadores del grupo en ciencias administrativas. Esto permitió comprender como son las aceleraciones, elementos y variables del grupo de investigaciones. Detallándose que es necesario tener aliados con la comunidad académica, hacer transferencia tecnológica, y formar equipos de trabajo, a su vez desarrollar cercanía con la administración pública en aras del fortalecimiento financiera y del entramado investigativo de la región en el área económica y administrativa.
Competencias emprendedoras de la mujer en el contexto mexicano
Authors: Miranda Sánchez Jennifer Darvelia , Sandoval Caraveo María del Carmen , Berttolini Díaz Gilda María
Published: January 2023

La participación de la mujer en la economía se ha incrementado a partir de su incursión por medio del emprendimiento, la cual no está exenta de retos y desafíos, desde la percepción social hasta políticas públicas deficientes que perpetúan la división del trabajo por roles de género. Es así como las mujeres que emprenden son entes disruptivos para el mundo empresarial que ha sido pensado en masculino, impactando en su forma de hacer negocios y requiriendo de competencias para perdurar y lograr su independencia económica. El objetivo del estudio fue identificar las competencias emprendedoras que poseen las empresarias en Tabasco, México. Se realizó con enfoque cuantitativo descriptivo transeccional, se aplicó un cuestionario compuesto por once dimensiones. Participaron 212 mujeres propietarias de negocios. Se identificó que las empresarias poseen competencias relacionadas con la necesidad de existir, la capacidad para reponerse y aprender y poseen espíritu emprendedor; y en menor medida poseen competencias para trabajar con otros, para priorizar el negocio y trabajar arduamente para mantener su emprendimiento; y tienen dudas sobre considerar a la empresa como un medio para emplear familiares. Los resultados contribuyen a la comprensión del comportamiento de las mujeres, siendo el primero de su tipo en el Estado, invitando a la realización de más estudios sobre el emprendimiento bajo enfoque de género.
Proceso de investigación en universidades venezolanas: dificultades y posibles soluciones
Authors: García Román María Amanda , Mendoza Gregoriana
Published: January 2023

El presente estudio tiene como objetivo, identificar las dificultades que se presentan en el proceso de investigación para la realización de los trabajos de grado, con el fin de incentivar, mejorar y orientar dicho proceso, en las universidades. Para lograr esto, se apoyó en los autores Colás Bravo y Hernández de la Rosa (2021), junto con Rojas Betancur y Méndez Villamizar (2017), entre otros. El enfoque fue cuantitativo, con paradigma neopositivista, investigación tipo descriptiva, con diseño no experimental transeccional y de campo. Se aplicó un cuestionario escala tipo Likert, con 34 ítems, a la muestra censal de 50 estudiantes de pregrado de la Universidad Rafael Urdaneta y la Universidad del Zulia, validado con juicio de expertos y confiabilidad de 0,827 a través del coeficiente de alpha cronbach, altamente confiable para su aplicación. Se realizó análisis de los datos con estadística descriptiva, utilizando frecuencias y medidas de tendencia central (media y moda). Luego del análisis, los resultados indicaron que factores personales, económicos, institucionales, y metodológicos afectan el proceso de investigación para elaborar el trabajo de grado; entre los resultados encontrados está que un 64,0% casi siempre puede redactar su trabajo de grado, en cambio un 16% casi nunca. En cuanto al factor económico, un porcentaje del 22,0% casi nunca tienen los recursos económicos para realizar su trabajo de grado. Además hay que agregar que, los estudiantes presentaron dificultades identificadas en las etapas de planificación, organización, ejecución y divulgación del mismo, donde el 56,0% casi siempre toman en cuenta la etapa de organización en el trabajo de grado, y un 38,0% casi nunca la toman en cuenta. Ante esto, se plantean unos lineamientos para disminuir las dificultades en la realización del trabajo de grado.
Analysis of the possibility of eliminating excess inequality through income redistribution
Authors: Guslyakov Matvey Sergeevich , Progunova Lada Victorovna , Ermoshina Tatiana Vladimirovna , Bogatyreva Svetlana Vladimirovna
Published: January 2023

The main idea of the research paper is the redistribution of personal incomes. The subject is the effects of eliminating excess inequality. The core of the research paper is creating a model of erasing personal incomes under the subsistence minimum using a redistribution model. One possible way to get rid of personal incomes below the subsistence minimum is a partially progressive tax, which separates income into different sectors and settles a tax rate for each sector. Eventually, the redistribution can be held by certain society groups using a tax for wealthy people and government subsidies for poor segment of the population or evenly proportional income redistribution. It is useful to consider and compare two indicators: subsistence minimum and minimum consumer budget. A minimum consumer budget is a set cost of food and non-food products and services that meet basic physiological and sociocultural needs. In fact, it is the cost of the minimum consumer basket. The minimum consumer budget determines the lower bound value of life in society, followed by poverty. In Russia, this indicator is not popular, but it has a potential to be useful. In fact, one of the most important function of a tax system is keeping balance in society. The methodology is a redistribution optimization model. The optimal level of income inequality implies that there is a level of income inequality that maximizes economic growth. The optimization model consists of key parameters that determine inequality level, such as tax rate, education, and fertility. In some ways, the tax scale is not fair for definite groups of people. People have a social order to reconsider a tax scale. The result is a block of recommendations for shifting personal income inequality rate to a balanced point. The paper is aimed to provide a strategy for applying the fairer redistribution model with simple computations and prove that it can be applied with relatively low effort.
PERKEMBANGAN KINERJA KEUANGAN PADA PT. ASTRA OTOPARTS TBK (TAHUN 2019- 2021) DENGAN MENGGUNAKAN ANALISIS COMMON SIZE
Authors: Rahmawati Titi , Sulistiyo Hari
Published: January 2023

Financial statements are a means to determine the company’s financial performance in order to obtain valuable results. The aim is to analyze the development of the financial performance of PT. Astra Otoparts Tbk from year to year, based on the 2019 and 2021 balance sheets and income statements using the usual size analysis technique. Researchers used descriptive research methods with a quantitative approach used for research methods. Based on the survey results, in 2020 there will be a decline. This is due to an increase in liabilities that have an impact on equity. The difference between the asset’s carrying amount and its recoverable amount is reported as an impairment loss or percentage loss. According to the income statement, the company’s marketing strategy was ineffective as evidenced by the increase in cost of goods sold and a decrease in gross profit margin. In terms of the company’s ability to generate profit, its net profit margin decreased year over year to a loss in 2019-2021. This shows that the company’s financial strength is decreasing because profitability has to fall to a loss.
PENGARUH E-SATISFACTION ON RE-USE INTENTION PADA PLATFORM BCA MOBILE BANKING
Authors: Limanua Irene Ariska , Pamungkas Aldi , Yusuf Abdul
Published: January 2023

In this modern era, all activities are based on technology. One of them is the economic sector, all economies are starting to switch to using advanced technology such as e-banking. And one of the determinants of the company's success to increase the re-use intention of mobile banking applications is the high level of user satisfaction. This study uses a quantitative approach by spreading questionnaires and measurements are carried out using the Likert scale. This research was conducted on the BCA Mobile Banking platform, where the population in this study is all BCA Mobile Banking users. Purposive sampling techniques were used in determining the number of study samples totaling 102 people, and the data was analyzed using SPSS software with simple linear regression analysis. The results showed that e-satisfaction had a positive and significant effect on reuse intentions
PENGARUH TINGKAT PENDIDIKAN, PEMAHAMAN AKUNTANSI, SOSIALISASI SAK EMKM, DAN KESIAPAN PELAKU UMKM TERHADAP PENERAPAN SAK EMKM PADA USAHA MIKRO KECIL DAN MENENGAH (UMKM) PENGOLAHAN MAKANAN RINGAN DI KECAMATAN BOYOLALI KABUPATEN BOYOLALI
Authors: Rositasari Ani Muslihah , Suryana Alean Kistiani Hegy , Pratiwi Yunita Niqrisah Dwi
Published: January 2023

This study aims to determine the effect of education level, accounting understanding, socialization of SAK EMKM, and readiness of UMKM actors on the application of SAK EMKM to UMKMs in Snack Processing in Boyolali District, Boyolali Regency. The population in this study is Snack Processing UMKMs that have been registered and have an IUMK with a sample of 40 respondents. Data obtained by distributing questionnaires, analyzed using classical assumption test, research instrument test, and hypothesis testing. The results of this study are the educational level significance value of 0.780 > 0.05 which means that H1 is rejected so that it is said that the education level variable has no significant effect on the application of SAK EMKM to UMKMs. The significance value of accounting understanding is 0.012 <0.05, which means that H2 is accepted so that it is said that the accounting understanding variable has a positive influence on the application of SAK EMKM. The significance value of SAK EMKM socialization is 0.001 <0.05, which means that H3 is accepted so that it is said that the socialization variable has a positive influence on the implementation of SAK EMKM. The significance value of the readiness of UMKM actors is 0.164 > 0.05, which means that H4 is rejected, so it is said that the UMKMs actor readiness variable does not have a significant influence on the implementation of SAK EMKM.
PENGEMBANGAN WISATA MERAPI GARDEN BERBASIS PERAN MASYARAKAT LOKAL DI SELO BOYOLALI
Authors: Setiawati Donna , Wulandari Fera Tri
Published: January 2023

Tourism villages need to be developed so that they can provide benefits to the surrounding community. The development process requires the participation of local communities starting from the planning, implementation and monitoring stages. Even though in reality conditions in the community, community participation or participation is often neglected. This study aims to examine the involvement of local communities in the development of the tourist village of Merapi Garden. Data collection techniques using unstructured interviews and documentation. The technique of checking the validity of the data uses triangulation and data analysis techniques in this research interactive model, namely by reducing data, presenting data, and verifying or drawing a conclusion. The results of this study are that there is an active role in providing input and involvement of the local community in the development of the Merapi Garden tourism village, which is carried out from the planning stage to its implementation.
PENGARUH SOFT SKILL DAN PENGALAMAN MAGANG KERJA TERHADAP KESIAPAN KERJA MAHASISWA MELALUI MOTIVASI KERJA SEBAGAI VARIABEL INTERVENING (STUDI KASUS PADA MAHASISWA FEB UNIVERSITAS PGRI SEMARANG)
Authors: Setiarini Herlisa , Prabowo Heri , Sutrisno Sutrisno , Gultom Henry Casandra
Published: January 2023

The purpose of this study was to examine the independent variables, namely soft skills and work experience on the dependent variable of work readiness through work motivation as a mediating variable. The population in this study was students in the 2018 Faculty of Economics and Business (FEB) Department of PGRI Semarang University, which amounted to 167 people. Sampling in this study used a saturated sample. The sample in this study were all students of economics and business class 2018, totaling 167 people. Collecting data in this study using a questionnaire. The analytical method used is the Structural Equation Model (SEM) with Smart PLS 3.2.9 analysis tool.
The results showed that the research model had met the validity and reliability of the construct on the SEM assumption with Smart PLS 3.2.9 so that the model was declared feasible. Based on data analysis, it can be concluded that: 1) Soft skills and work readiness of students of the Faculty of Economics and Business, PGRI University Semarang, 2) Internship experience and work readiness of students of the Faculty of Economics and Business, PGRI University Semarang, 3) Work motivation and work readiness of students of the Faculty of Economics and Business, PGRI University Semarang, 4) Soft skills and Work Motivation of Students of the Faculty of Economics and Business, PGRI University of Semarang, 5) Internship experience and work motivation of students of the Faculty of Economics and Business, PGRI University Semarang, 6) Indirect influence of soft skills on work readiness of Faculty Students Economics and Business PGRI Semarang University through work motivation, 7) Internship experience and work readiness Students of the Faculty of Economics and Business, PGRI University Semarang through work motivation
POSSIBILITIES FOR ADJUSTMENT OF WAGON FLOWS TO SEAPORTS BY MEANS OF SIMULATION
Authors:   Irkutsk State Transport University (IrGUPS), Malovetskaya E.V.
Published: January 2023

The presented work considers the method of qualitative assessment of the loading of the railway network of Russian Railways to ports using the example of the Nakhodka port, namely, the procedure for modeling restriction periods by declaring conventions in the coordination of shippers' applications. In order to further simulate loading to ports, an analysis of the incoming wagon flow was carried out. The specifics of the work of railway transport imply significant unevenness, both daily and seasonal. In this regard, the incoming car flow has a dominant effect on the rhythm of loading in ports, therefore, incoming car flows were analyzed. Based on statistics, distribution parameters were obtained. In the process of modeling, with various possibilities of port infrastructure for transshipment of goods, it was established that with the processing capacity of the port up to 31 million tons inclusive, there is a significant number of cases of declaration of conventional prohibitions, which in the future for Russian Railways implies a lack of funds from transportation activities. However, with uniform loading in the direction of ports (without hesitation), the required processing capacity of the port of 32 million tons per year will be sufficient.
INTERMODULATION DISTORTION IN VOLTAGE MODE CLASS D SWITCHING AMPLIFIERS WITH RESISTIVE LOAD
Authors:   Moscow Technical University of Communications and Informatics, Varlamov O.V.
Published: January 2023

The development of 5G technologies and the Internet of Things lead to a change in the traditional paradigm of frequency-territorial planning. Indeed, in addition to reducing the distance between base stations of cellular communication, there is a problem of approaching the radio means of mobile devices to them, as well as the problem of uncontrolled convergence of an arbitrary number of radio means on mobile devices. In all cases, intermodulation distortion (name in English technical literature: reverse intermodulation distortion - RIMD) occurs between closely spaced simultaneously operating transmitters. Once in the reception band, they disrupt the normal functioning of radio equipment. Therefore, the requirements for the transmitter's electromagnetic compatibility characteristics are continuously tightened. Class D power amplifiers, in addition to higher efficiency and better quality indicators, may potentially have a lower level of intermodulation distortion. The article deals with intermodulation distortion in previously unexplored class D push-pull voltage switching mode power amplifier with a resistive load. On the developed theoretical approach basis, an analysis was made of the intermodulation distortion levels dependence on the electronic components parameters spread and the circuit operating mode. It is shown that in order to achieve the desired levels of intermodulation distortion, not exceeding -70 dB, it is necessary to ensure the difference in the active elements saturation resistances is not more than 20% and the saturation time deviation from the meander is not more than 2 degrees.
BUILDING A QUALITY ASSESSMENT CRITERION BINARY BARKER-LIKE CODES
Authors:   National Research Nuclear University MEPhI, Gavrishev A.A. , Osipov D.L. ,   North-Caucasus Federal University
Published: January 2023

The objective of this article is to construct a criterion for evaluating the quality of binary Barker-like codes. The analysis of well-known studies on the formation of these codes with properties close to binary Barker codes is carried out. The analysis showed that in the works devoted to the use of well-known binary Barker-like codes in secure wireless communication systems and the formation of such codes, researchers primarily pay attention to such quality assessment indicators as the autocorrelation function, the length and number of such codes, and others. Based on the analysis of works [5, 9-25], the initial tuple of quality assessment of binary Barker-like codes is formulated, represented by the expression (1). However, the original tuple (1) lacks such an important quality assessment indicator as the linear complexity assessment, which is often taken as one of the primary indicators of crypto resistance. Based on this, the purpose of this article is to increase the accuracy of the evaluation of binary Barker-like codes by applying the identified criterion. The authors of the article, using the Berlekamp-Massey algorithm, evaluated the linear complexity of binary Barker-like codes presented in [9-23]. It has been established that a sufficiently large number of such codes (from 24% to 75%) have insufficient linear complexity, that is, they are non-cryptographic. As a result, they cannot be used in secure wireless communication systems. The result obtained is consistent with other studies in this field. Proceeding from this, when using well-known binary Barker-like codes in secure wireless communication systems, as well as when forming new binary Barker-like codes, it is necessary to pay attention not only to the known quality assessment indicators, but also to their linear complexity. The authors have modified the original tuple represented by expression (1). The modified tuple is represented by expression (2). According to the authors, the modified quality assessment criterion will improve the accuracy of the evaluation of binary Barker-like codes.
AUTOMATIC MARKING OF BROWSER NETWORK TRAFFIC FOR ANALYSIS AND CLASSIFICATION USING THE EXAMPLE OF THE REMOTETOPOLOGY PLATFORM
Authors:   University of the Gubkin Russian State University of Oil and Gas (NRU), Uymin A.G.
Published: January 2023

Purpose: Network traffic analysis is a security standard in most remote work systems. This task is becoming more complex every day due to the use of encryption systems on an increasing number of devices. The traditional method of traffic research in the OSI model does not provide the proper level of reliability. Method: Machine learning is one of the promising methods for solving the problem of network traffic analysis. In the first place is the identification of unwanted traffic, which can be interpreted as a tool for bypassing the system. In order for the system to be used in the educational and production process, it is necessary to take into account the issue of ergonomics of the solution. The influence of the monitoring and analysis system on the response rate. The purpose of the work: The purpose of the work is: the formation of tagged HTTP/HTTPS traffic data, to intercept encrypted tunnel traffic. It is proposed to develop a browser plugin whose tasks are to collect data from the user's browser using the Chromium API. The collected data is combined with network streams to form labeled data used later for ML model training datasets. Novelty: The novelty elements of the presented solution are the use of Machine learning to classify network traffic based on labeled data. Result: using the presented solution for automatic marking of browser network traffic for analysis and classification, we decided to consider the operation of each system in an independent encrypted channel. The launch of the RemoteTopology project has been switched to HTTP, while each connection is performed in its own VPN session and guarantees the security of the connection. Within the connection, the marking of streams is performed, which allows you to quickly and efficiently process data for subsequent ML analysis. Practical relevance: the presented solution is proposed to be implemented within the framework of the RemoteTopology platform to identify in real time deviations between the reference system that already identifies the user and "undesirable systems" that the user can use to bypass the protection system.
PERSPECTIVE PRIMARY STANDARD OF TIME AND FREQUENCY FOR FREQUENCY SYSTEMS AND TIME SUPPORT OF COMMUNICATION NETWORKS
Authors:   MTUCI, Shvarts M.L. , Ryzhkov A.V. ,   MTUCI, Aladin V.M. ,   MTUCI
Published: January 2023

The article deals with the acquisition of primary time and frequency standards for time-frequency support systems as a reference node for the formation of the time scale for 4G and 5/6G communication networks. The basis of frequency and time synchronization systems, which together form the frequency-time support of communication networks, are the primary standards of time and frequency. For communication networks up to 4 generations in the frequency division mode (TDM, 3G, 4G FDD networks), only a network frequency synchronization system is needed, which is based on the use of primary reference generators. In fact, it is a part of the HDPE that provides the formation of the reference frequency. Taking into account the future requirements for synchronization systems of 5/6G communication networks, it is necessary to provide for the use of improved primary reference sources, as well as a secondary master oscillator with the functions of a master PTP frequency and a combiner of frequency and time signals. In the future, this will allow the transition to the introduction of improved HDPE (uHDTV). In connection with the current situation on the Russian market, the article discusses the possibility of using domestically produced equipment for time-frequency support systems.
A TECHNIQUE FOR RESTORING INFORMATION OF THE END OF OFDM CHARACTERS SUMMED WITH CAZAC SEQUENCES WHEN SYNCHRONIZED BY A CYCLIC PREFIX
Authors:   Moscow Technical University of Communications and Informatics, Kiseleva T.P.
Published: January 2023

In previous studies, it was proved to increase the synchronization efficiency by the periodic correlation function (CF) of the cyclic prefix (CP) OFDM symbols of LTE technology when using as a CAZAC CP the sequences of the Zadoff-Chu (ZC(2,9)) as part of the "empty" symbols of the central part of the frequency range of the LTE frame transmitted to DownLink (DL) direction. In this study, the symbols of the central part of the frequency range of the LTE frame are not "empty" and the information of the end of the OFDM symbols, on which elements of multiphase sequences are superimposed, is restored on the receiving side. A comparative analysis of the characteristics of cyclic CF sequences of Zadoff-Chu and Frank, used to fill the CP and the end of the characters in the sum with the elements of the binary information sequence, is carried out. The research was carried out in the MATLAB mathematical modeling system on a model of a communication channel close to ideal, with QPSK, 64QAM modulation options for frame information symbols. Analysis of the research results showed that the use of multiphase CAZAC sequences makes it possible to increase the efficiency of synchronization over the CP OFDM symbols of the LTE technology frame both for "empty" symbols and for symbols with the restoration of useful information elements of the end of the OFDM symbol from the sum of binary modulated codes and multiphase sequences. The modulus of the merit factor when filling the CP with the sum of modulated bit data and CAZAC sequences is higher by 0.425dB...1.404dB than when filling the CP with only modulated bit data. When summing sequences, the value of the peak factor of the transmitted symbols increases, but by an insignificant amount – no more than 0.175dB ... 0.418dB, depending on the type of modulation and the choice of the CAZAC sequence.
FREQUENCY SYNTHESIZERS MODERNIZATION OF VHF RADIO COMMUNICATION
Authors:   VGLTU named after G.F. Morozov, Lenshin A.V. , Tikhomirov V.N. ,   VGLTU named after G.F. Morozov, Shatalov E.V. ,   VGLTU named after G.F. Morozov, Savchenko M.P. ,   Immanuel Kant Baltic Federal University, Tikhomirov N.M. ,   Immanuel Kant Baltic Federal University
Published: January 2023

Trends and prospects for the development of modern systems and complexes of radio communication, features of the use of frequency synthesizers based on the pulse-phase-locked loop in modern radio communications are analyzed. The results of the MF modernization on an integrated circuit HMC704 for transceivers of VHF radio stations are presented. The modeling of the upgraded midrange main units was carried out in the TI PLLatinumSim program. The LPF elements values and power spectral density of the output MF signal phase noise on LMX2594 IC are calculated. Due to the possibility of using a high comparison frequency in a frequency-phase detector, it was possible to improve the weight and size indicators, increase the speed and purity of the output signal spectrum of upgraded MF, which was confirmed by the results of modeling and experimental studies of the current synthesizer layout.
RESEARCH OF APPROACHES FOR AUTHENTICATION OF WIRELESS NETWORK USERS USING VARIOUS LDAP SOLUTIONS
Authors:   The Bonch-Bruevich Saint-Petersburg State University of Telecommunications, Dokshin A.D. , Kovtsur M.M. ,   The Bonch-Bruevich Saint-Petersburg State University of Telecommunications, Prudnikov S.V. ,   The Bonch-Bruevich Saint-Petersburg State University of Telecommunications, Targonskaya A.I. ,   The Bonch-Bruevich Saint-Petersburg State University of Telecommunications
Published: January 2023

Intoduction: every year, the technology of the IEEE802.11 family of networks is becoming more widespread and popular. Based on the possible risks, IT administrators take measures to protect their organizations. One of the ways to improve information security is to use IEEE802.1 x for user authorization. Purpose: the purpose of the study is to study various LDAP solutions for user authorization in a wireless network. Results: three variants of the centralized solution for authorization of users of a wireless network on the basis of operating systems are developed: Windows Server, Ubuntu Linux, and Astra Linux. When working with Windows Server, it was found that you can use the Active Directory LDAP database to store user credentials. The study also showed that if the network infrastructure of the organization needs to implement a server using the Linux operating system, then the FreeIPA database can be used as an LDAP database, and the role of the RADIUS server must be entrusted to the FreeRADIUS software. The advantage of this approach is that all the software required for user authorization is free. Despite the fact that Active Directory is the most popular LDAP database-FreeIPA meets all the needs that arise during security administration. Practical relevance: each solution has passed load testing and can be implemented in the network infrastructure of organizations. Discussion: the choice of operating system and LDAP database for user authorization completely depends on the requirements of the organization, so one of the proposed implementation options will fit each requirement.
PREDICTION OF THE TOTAL ELECTRONIC CONTENT OF THE IONOSPHERE BASED ON MACHINE LEARNING ALGORITHMS
Authors:   e Moscow State University of Geodesy and Cartography, Zamogilnyi Dmitrii
Published: January 2023

Introduction. The paper presents and describes the technology of applying the machine learning algorithm in predicting the vertical total electron content of the ionosphere. The ionospheric error is one of the most significant sources of pseudorange measurement errors from GNSS signals. Increasing every year requirements for the accuracy of positioning and navigation by GNSS signals leads to the need to develop new methods to reduce the impact of various measurement errors, including the ionospheric error. At present, ionospheric models of various types are used for ionospheric correction of measurements. The currently widely used ionospheric models do not allow a significant increase in the accuracy of positioning based on GNSS signals. At the moment, the creation of a new effective method for modeling and forecasting the ionosphere that meets modern requirements for positioning accuracy is an important and urgent task. The purpose of this work is to create a methodology for modeling and predicting the total electron content of the ionosphere using machine learning algorithms. Machine learning is currently a fairly common and popular method for solving problems of classification, recognition and prediction. The method has been used for many years in medicine, robotics, industry, finance and many other branches of modern science and economics. To achieve this goal, it is necessary to solve a number of tasks. First of all, you need to select and collect data for training the model, then you need to select a machine learning method and hyperparameters for the selected method. Next, it is necessary to perform TEC prediction based on the trained model and evaluate the accuracy of the results obtained. comparison of the obtained results with the accuracy of other existing models It is shown that machine learning does a good job of predicting full electronic content. The resulting trained model makes it possible to obtain a forecast with an accuracy comparable to the accuracy of the Klobuchar, NeQuick models, and in some cases much more accurate.
ESTIMATES FOR NUMBERS OF BOOLEAN MAPPINGS USED IN QUANTUM KEY DISTRIBUTION PROTOCOLS
Authors:   Moscow Technical University of Communications and Informatics, Pankov K.N.
Published: January 2023

Introduction: In the near future, quantum cryptography will play an important role in maintaining a sufficient level of information security of modern telecommunication networks in the conditions of a quantum challenge, which refers to the emergence of quantum computers that will be able to effectively solve the mathematical problems on which, for example, modern key distribution systems are based. Now quantum cryptography is actively used by commercial and government agencies around the world and, in particular, in the Russian Federation. At the same time, a large amount of research is being carried out in the field of development and implementation of quantum key distribution systems, as the main part of quantum cryptography. In this regard, the task of developing new and refining existing protocols for quantum key distribution, as well as studying various mathematical and physical objects that are associated with these protocols, is an urgent task. In particular, one of the stages of the classical BB84 protocol implement ed in a noisy quantum channel is associated with the problem of studying correlation immune and stable mappings, part of which is the problem of estimating their number, which has not been completely solved. Purpose: to find mathematical expressions for exact and asymptotic estimates of the cardinalities of classes of (n,m,k) stable and correlation immune of order k boolean mappings. Results: The best currently asymptotic upper and lower bounds for the number of such classes of mappings with the number of outputs greater than or equal to five are obtained. Recurrent relations were also proved, which allow one to find the exact distribution of the cardinalities of classes of similar mappings for the case of small numbers n and m. Practical relevance: the results obtained allow us to estimate the probability that with a random choice of mapping to enhance secrecy at the stage of secondary processing of the BB84 protocol, the situation will be neutralized when the adversary has access to k photons sent over a communication chan nel of his choice.