bluuebunny/crossref_metadata_2025_split huggingface dataset:
APPLICATION OF VIRTUAL INSTRUMENTS TECHNOLOGY IN AN AUTOMATED TEST BENCH FOR MEASURING PARAMETERS OF AIR TRAFFIC CONTROL TRANSPONDERS
Authors: СИМОНОВ П.И. , КОСТЮК А.А. , МАКАРЕНКО А.А. 
Published: July 2021

Дана оценка использования цифровой контрольно-измерительной аппаратуры при проверке авиационных систем в соответствии с руководящими документами ARP4754 и DO-178C. Указано, что в автоматизированных стендах на основе ЭВМ, в отличие от традиционных подходов, повышается роль программного обеспечения (ПО). Приведен обзор существующих ре -шений для проверки приемоответчиков управления воздушным движением (УВД). Сделан вывод о необходимости доработки автоматизированного измерительного стенда проверки бортовых систем предупреждения столкновений (БСПС) с целью оценки параметров приемоответчиков УВД на стадиях их разработки и проведения сертификационных работ в соответствии с DO-181E. Сформированы требования к ПО. Представлены результаты практической реализации автоматизированного измерительного стенда.
An assessment of the use of digital instrumentation equipment for testing airborne systems under the guidelines ARP 4754 and DO-178C is given. It is shown that in the computer-based automated test bench, unlike traditional approaches, the importance of software increases. An overview of existing solutions for testing air traffic control (ATC) transponders is provided. It is concluded that it is necessary to refine the automated measuring bench for testing the airborne traffic collision avoidance systems (TCAS) to assess the parameters of ATC transponders at the stages of their development and certification under the guideline DO-181E. Software requirements are formed. The results of the practical implementation of an automated measuring stand are presented.
RUSSIAN MARKET OF PROFESSIONAL MOBILE RADIO AND CRITICAL COMMUNICATIONS: CURRENT STATE, PROBLEMS, PROSPECTS
Authors: ШОРИН О.А. , КАСПАРИ Р.Ю. 
Published: July 2021

Рассмотрены характеристики и аудитория сетей профессиональной радиосвязи и критических коммуникаций. Проведен анализ используемых в России технологий профессиональной радиосвязи и перспектив развития данного сегмента телекоммуникационного рынка, произведена оценка его объемов в пятилетней перспективе. Показано, что внедряемая технология широкополосной профессиональной связи МАКВИЛ не только решает назревшие проблемы, связанные с модернизацией морально и физически устаревших систем ведомственной и корпоративной транкинговой связи, но и открывает новые возможности роста рынка услуг передачи критически важной информации.
The characteristics and audience of professional mobile radio and critical communication networks are reviewed. The analysis of professional mobile radio technologies used in Russia and the prospects for the development of this segment of the telecommunications market is carried out, as well as its volume is estimated in the five-year perspective. It is shown that McWiLL broadband professional radio communication technology not only solves the urgent problems associated with the modernization of morally and physically obsolete systems of departmental and corporate trunking communications, but also opens up new opportunities for the growth of the market for critical information transmission services.
A SURVEY OF MODERN TECHNIQUES OF ERROR CORRECTION CODING
Authors: ТРИФОНОВ П.В. , КУДРЯШОВ Б.Д. , МИЛОСЛАВСКАЯ В.Д. 
Published: July 2021

Рассмотрены методы помехоустойчивого кодирования, применяемые в современных системах передачи и хране -ния информации. Представлен краткий обзор кодовых конструкций, алгоритмов декодирования, достигаемыххарактеристик помехоустойчивости и производительности. Указаны основные достоинства и недостатки применяемых подходов, а также некоторые направления их развития.
The paper discusses error correction coding techniques used in modern communication and storage systems. A brief survey of code constructions, decoding algorithms, and achievable performance and complexity is presented. The principal advantages and drawbacks of the considered techniques, as well as some further research directions, are outlined.
A METHOD OF IMAGE TRANSMISSION IN A LOW-POWER WIDE-AREA MESH NETWORK
Authors: ФАМ В.Д. , КИСЕЛЬ В.С. , КИРИЧЕК Р.В. , ОВЧИННИКОВ А.О. , БОРОДИН А.С. 
Published: July 2021

Представлены результаты исследований передачи изображений через фрагмент сети связи на базе технологии LoRa с поддержкой ячеистой топологии. Приведена оценка качества изображений,передаваемых с различным разрешением и степенью сжатия. Показано, что с увеличением количества промежуточных узлов ретрансляции возрастала сетевая задержка и увеличивалось время доставки изображения на сервер. Установлено, что передача изображений на базе сети LoRa Mesh возможна, если не учитывать сетевую задержку, увеличивающуюся при возрастании числа узлов-ретрансляторов.
This paper presents the results of a study of image transmission via a fragment of a network based on LoRa technology with mesh topology support. The quality of images transmitted with different resolutions and compression rates was evaluated. It is shown that with an increase in the number of intermediate relay nodes, the network latency increased and the time of image delivery to the server increased. It is established that the transmission of images based on the LoRa Mesh network is possible if the network delay is not taken into account.
A STUDY OF ROUTING METHODS IN URBAN WIRELESS MESH NETWORKS BASED ON REINFORCEMENT LEARNING
Authors: ФАМ В.Д. , КИРИЧЕК Р.В. , БОРОДИН А.С. 
Published: July 2021

Приведены результаты исследования методов маршрутизации на основе обучения с подкреплением с помощью имитационной модели. Рассмотрена задача маршрутизации сетевого трафика для фрагмента ячеистой сети городского масштаба, управляемой на основе технологий искусственного интеллекта. Представлена модель системы массового обслуживания для изучения процесса маршрутизации, а также обучения выбора маршрута. Имитационная модель фрагмента ячеистой сети разработана в пакете Anylogic и обучается на основе платформы Microsoft Bonsai.
The results of the study of network traffic routing methods based on reinforcement learning using a simulation model are presented. The problem of network traffic routing for a fragment of a city-scale mesh network, controlled on the basis of artificial intelligence technologies, is considered. The article presents a queueing model for studying the routing process, as well as learning how to choose a route. The mesh network fragment simulation model was developed in the Anylogic package and is trained on the basis of the Microsoft Bonsai platform.
IMPLEMENTATION OF AN IDENTIFICATION SYSTEM FOR LORA TERMINAL DEVICES IN MESH NETWORKS BASED ON THE DIGITAL OBJECTS ARCHITECTURE
Authors: САЗОНОВ Д.Д. , КИРИЧЕК Р.В. 
Published: July 2021

Рассмотрено практическое применение архитектуры цифровых объектов (Digital Object Architecture - DOAtв качестве системы идентификации для энергоэффективных ячеистых сетей на базе технологии LoRa. Представлены тестовые сценарии взаимодействия оконечных устройств с сервером обработки и идентификации при помощи системы Handle System, развернутой в формате локального реестра LHS (Local Handle Service). Описанные подходы и архитектура взаимодействия могут быть перенесены на любые системы интернета вещей, так как технология DOA позволяет описывать любые реальные или виртуальные сущности вещей в формате метаданных с присвоением уникальных неизменяемых идентификаторов.
The article describes the practical application of Digital Objects Architecture (DOA) as an identification system for energy-efficient mesh networks based on LoRa technology. Test scenarios for the interaction of edge devices with the processing and identification server using the Handle System deployed in the form of the local registry LHS (Local Handle Service) are presented. The described approaches for implementation of identification system based on Handle System and DOA can be used in different IoT systems since DOA technology allows you to describe any real or virtual entities of things in metadata format with the assignment of unique immutable identifiers.
A PRIORI ANALYSIS OF RADIATION RESISTANCE OF MULTICHANNEL LOW-NOISE KU-BAND AMPLIFIER
Authors: ТИТОВ Д.А. 
Published: July 2021

Приводится алгоритм расчета накопленной дозы радиационного излучения для унифицированной конструкции бортовой аппаратуры систем спутниковой связи
The article presents an algorithm for calculating the accumulated radiation dose for the unified design of onboard equipment of satellite communication systems.
Unified Framework for the Analysis of the Effect of Control Strategies on On-Load Tap-Changer’s Automatic Voltage Controller
Authors: Garcia Iker , Santana Roberto 
Published: July 2021

<p>With the advent of new loads and generation on the low voltage grid, voltage fluctuation has increased, especially in active distribution grids with a high penetration of distributed resources and a large deployment of electric vehicles. The coordination of different technologies has emerged as the best way for voltage regulation, among others, smart inverters, open soft points or transformers with on-load regulation capability. This paper proposes a novel way to model the control strategies for the automatic voltage controller of On-Load Tap-Changer transformers. The purpose is to standardize and simplify the way these</p>
<p>strategies are represented, in order to facilitate (i) their election by Distribution System Operators, (ii) their future integration with other systems, and (iii) to increase the ability to anticipate On-Load Tap-Changer behavior. The proposal has been validated using real data, obtaining an accuracy of 99.15% in the tap changer positions. A unified framework is also introduced, which allows the proposed functional representation to be combined with the On-Load Tap-Changer controller behavior estimation. A experimental validation has been carried out where more than 150 000 strategies have been simulated, finally determining the one that best fits the objectives.</p>
PROGETTARE UN LIBRO DI TESTO DIGITALE TRA CRITICITÀ E OPPORTUNITÀ
Authors: Nardi Andrea 
Published: July 2021

In Italia la vigente cornice legislativa prevede nelle scuole la transizione al libro di testo elettronico e individua nei docenti i principali soggetti coinvolti nell’autoproduzione e valutazione di questi materiali didattici digitali. Nel presente studio vengono descritti il design, lo sviluppo e la valutazione di un prototipo di libro di testo digitale, multimediale e interattivo, nel tentativo di indagare le principali criticità poste dalla sua realizzazione, i possibili elementi di innovazione rispetto al tradizionale libro di testo, e fornire delle linee-guida ai docenti sempre più responsabili della scrittura e validazione di queste nuove tipologie di testi. Per valutare l’usabilità cognitivo-didattica del prototipo è stato somministrato un questionario a un panel di esperti. Nella prima parte dell’articolo vengono descritti i risultati della rassegna della letteratura svolta al fine di rintracciare buone regole e principi di design; la seconda parte descrive lo sviluppo del prototipo e la procedura di raccolta e analisi dei dati. I risultati ottenuti vengono successivamente discussi ed infine si cerca di trarre qualche conclusione da quanto emerso.
In Italy the current legislative framework foresees the transition to the electronic textbook in schools and identifies teachers as the main subjects involved in the self-production and evaluation of these digital teaching materials. This paper describes the design, development and evaluation of a digital, multimedia and interactive textbook prototype, in an attempt to investigate the main critical issues raised by its implementation and the possible elements of innovation compared to the traditional textbook. In addition, it provides guidelines for teachers who are increasingly responsible for the writing and validation of these new types of texts. To assess the cognitive-didactic usability of the prototype, a questionnaire was given to a panel of experts. The first part of the paper describes the outcomes of the literature review carried out in order to draw effective design principles; the second part illustrates the prototype development and the procedure adopted to collect and analyze data. The results are then discussed and finally some conclusions are drawn.
Análise da qualidade de energia na indústria
Authors: Mendonça Gabriel , Souza Paulo Antônio , De Cássio Eric 
Published: July 2021

Através de uma pesquisa e trabalho de campo, buscou-se descrever os fatores que influenciam na condição da energia recebida por uma determinada fábrica, discernir a tensão de boa de má qualidade, demonstrar por gráficos obtidos através de uma análise técnica, os valores a serem examinados para que se chegue à conclusão de que o circuito que foi analisado estava sendo prejudicado ou não pela energia recebida.
Na linha de produção da indústria onde foi realizada a análise, vinham ocorrendo oscilações na energia recebida da concessionária e isso acabou afetando a produtividade da mesma, pois impactou diretamente no funcionamento de algumas máquinas. Pelo fato de haverem equipamentos importados, os quais seguem as normas do país de origem, mesmo com os níveis de energia registrados estando dentro do padrão da concessionária local e dos valores determinados pela ANEEL, ainda assim, impactavam no funcionamento das máquinas. A partir desta necessidade, uma empresa especialista na área foi contratada para efetuar medições no circuito, fazer uma análise para descobrir a causa e buscar soluções para este problema com a energia recebida.
A energia elétrica se tornou um subsídio básico e fundamental no desenvolvimento da sociedade. Na indústria, além da presença, a qualidade deste elemento passa a ser de extrema importância tanto para eficiência quanto para a vida útil dos componentes e maquinários. Uma energia apropriada é um problema a menos a ser enfrentado por uma fábrica e seus colaboradores em sua rotina.
TECNOLOGIA DE TRANSMISSÃO DE ENERGIA SEM FIO (WIRELESS POWER TRANSFER)
Authors: Riguete de Castro Wendel , da Silva Fialho Edvaldo , Vinicius Cavalhiere Marcos , Rodrigues Coelho Junior Ivamar , Silva Lopes Paulo Henrique 
Published: July 2021

Esse artigo tem como tema a tecnologia de transmissão de energia sem fio (Wireless Power Transfer – WPT). Assim como a comunicação verbal que se desenvolveu com a implementação do rádio, celulares e depois com a internet, temos hoje a WPT, que consiste em transmitir cargas elétricas sem condutores. O artigo busca esclarecer dúvidas sobre o tema explicando: O que é? Como funciona? Quais os ganhos e as perdas em relação a energia transmitida através de condutores? Para isso, os autores utilizaram os conhecimentos de eletromagnetismo e circuitos elétricos estudados ao decorrer da graduação, além da pesquisa em artigos, monografias e teses sobre o tema. Sabe-se que a energia wireless já está sendo implementada em algumas funções do dia a dia como em carregadores de celular e para carros elétricos. Logo, vale ressaltar a importância do tema como inovação tecnológica, que pode ser aplicada tanto para facilitar as tarefas do dia a dia, como também para otimizar os processos dentro das indústrias. Desta forma, os autores abordaram o tema de forma geral, não se restringindo a teoria e apresentando as principais aplicabilidades e as vantagens e desvantagens dessa tecnologia.
Estimating group differences in network models using moderation analysis
Authors: Haslbeck Jonas M. B. 
Published: July 2021

AbstractStatistical network models such as the Gaussian Graphical Model and the Ising model have become popular tools to analyze multivariate psychological datasets. In many applications, the goal is to compare such network models across groups. In this paper, I introduce a method to estimate group differences in network models that is based on moderation analysis. This method is attractive because it allows one to make comparisons across more than two groups for all parameters within a single model and because it is implemented for all commonly used cross-sectional network models. Next to introducing the method, I evaluate the performance of the proposed method and existing approaches in a simulation study. Finally, I provide a fully reproducible tutorial on how to use the proposed method to compare a network model across three groups using the R-packagemgm.
Monográfico. Arte, tecnología y colonialidad
Authors: Alfonso Bouhaben Miguel , Valesini Silvina , Villegas Daniel 
Published: July 2021

El presente Monográfico Arte, Tecnología y Colonialidad tiene el propósito de discutir y reflexionar, desde una perspectiva crítica y transdisciplinar, sobre la intersección que se establecen entre las prácticas artísticas, las nuevas tecnologías y los procesos actuales, post y decoloniales. Para ello, convocamos a investigadores nacionales e internacionales para que envíen sus aportaciones investigativas en torno a las posibilidades de la investigación artística en la tecnosfera desde la óptica de la colonialidad del saber/ver y la decolonización estética.
PENGARUH PEMAKAIAN HYDROCARBON CRACK SYSTEM (HCS) TERHADAP PERFORMA SEPEDA MOTOR SUPRA X 125 TAHUN 2009
Authors: Jusnita  
Published: July 2021

Kendaraan bermotor di Indonesia yang menjadi sumber emisi gas buang terbesar adalah sepeda motor. Ini merupakan kurangnya perhatian pengguna kendaraan bermotor dengan perbandingan kompresi mesin kendaraan yang tinggi cenderung memilih mengisi bahan bakar sepeda motornya dengan premium yang harganya lebih murah namun memiliki angka oktan yang rendah. Hal ini tentu akan menimbulkan masalah terhadap pembakaran yang tidak sempurna. Efek yang ditimbulkan adalah menyebabkan meningkatnya polutan pencemaran udara. Untuk mengatasi permasalahan diatas adalah dengan cara menggunakan Hydrocarbon Crack System (HCS), HCS bekerja untuk menyempurnakan proses pembakaran, sehingga dapat menurunkan kadar emisi gas buang kendaraan. Tujuan dari penelitian ini melihat pengaruh penggunaan Hydrocarbon Crack System (HCS) terhadap performa dan kandungan emisi gas buang yang dihasilkan. Berdasarkan hasil penelitian diperoleh bahwa penggunaan HCS pada sepeda motor Honda Supra X 125 dapat menurunkan emisi gas CO sebesar 40 %. Untuk emisi gas HC penggunaan HCS dapat menurunkan emisi gas HC sebesar 37%,sedangkan untuk emisi gas buang CO2 penggunaan HCS dapat meningkatkan emisi gas CO2 sebesar 12.98%.

Motor vehicles in Indonesia which are the largest source of exhaust emissions are motorbikes. This is the lack of attention of motorized vehicle users with high engine compression ratios, which tend to choose to refuel their motorbikes with premium which is cheaper but has a low octane number. This of course will cause problems with incomplete combustion. The resulting effect is to increase air pollutants. To overcome the above problems is by using the Hydrocarbon Crack System (HCS), HCS works to improve the combustion process, so that it can reduce the levels of vehicle exhaust emissions. The purpose of this study is to see the effect of the use of the Hydrocarbon Crack System (HCS) on the performance and content of the resulting exhaust emissions. Based on the research results, it was found that the use of HCS on a Honda Supra X 125 motorcycle could reduce CO gas emissions by 40%. For HC gas emissions, the use of HCS can reduce HC gas emissions by 37%, while for CO2 exhaust emissions, the use of HCS can increase CO2 emissions by 12.98%.
Extended galleries above the porch in two mosques: Qualitative analysis of mosques with wooden minaret in Bosnia and Herzegovina
Authors: Jahic Edin 
Published: July 2021

Among the many mosques from the Ottoman period in Bosnia and Herzegovina, the most numerous are modest and predominantly wooden mosques covered by a hip roof with an integrated wooden minaret. Although they originate in the long tradition of Turkish single-space mosques, their appearance and construction represent the expression of Bosnian autochthonous architecture. They were mostly built for the needs of the neighborhood (mahala) in smaller and larger towns, but also in rural areas. Due to the perishable materials and various other reasons, they had been renovated several times so changes in appearance were in some cases quite certain. These structures have been insufficiently researched and very few valuable publications are available so far.
Qualitative analysis of significant examples, in addition to the common features by which these mosques differ from large monumental mosques, differences in the spatial concept, as well as the construction of individual elements, were observed. Concerning the shape of the entrance, these mosques have four characteristic solutions: a mosque with a porch, with a porch and a gallery, without a porch, and with a closed vestibule. The analysis also showed that the two mahala mosques in Tuzla had a specific gallery form that deviated from the typical solution. These galleries are extended over the porch on three sides by the application of ingenious carpentry solutions and covered with elongated eaves. In addition, this study showed that thanks to available sources, it was possible to re-establish the original form of the two mosques, which had since been altered.
Disintegration of Long-period Comet C/2019 Y4 (ATLAS). I. Hubble Space Telescope Observations
Authors: Ye 叶 Quanzhi 泉志 , Jewitt David , Hui 许 Man-To 文韬 , Zhang Qicheng , Agarwal Jessica , Kelley Michael S. P. , Kim Yoonyoung , Li 李 Jing 京 , Lister Tim , Mutchler Max , Weaver Harold A. 
Published: July 2021

Abstract
The near-Sun comet C/2019 Y4 (ATLAS) is the first member of a long-period comet group observed to disintegrate well before perihelion. Here we present our investigation into this disintegration event using images obtained in a three-day Hubble Space Telescope campaign. We identify two fragment clusters produced by the initial disintegration event, corresponding to fragments C/2019 Y4-A and C/2019 Y4-B identified in ground-based data. These two clusters started with similar integrated brightness but exhibit different evolutionary behavior. C/2019 Y4-A was much shorter-lived compared to C/2019 Y4-B and showed signs of significant mass loss and changes in size distribution throughout the three-day campaign. The cause of the initial fragmentation is undetermined by the limited evidence but crudely compatible with either the spin-up disruption of the nucleus or runaway sublimation of subsurface supervolatile ices, either of which would lead to the release of a large amount of gas as inferred from the significant bluing of the comet observed shortly before its disintegration. Gas can only be produced by the sublimation of volatile ices, which must have survived at least one perihelion passage at a perihelion distance of q = 0.25 au. We speculate that Comet ATLAS is derived from the ice-rich interior of a nonuniform, kilometer-wide progenitor that split during its previous perihelion. This suggests that comets down to a few kilometers in diameter can still possess complex, nonuniform interiors that can protect ices against intense solar heating.
Stellar Multiplicity in an RMHD Simulation with Stellar Feedback
Authors: Raju Aman N. , Guszejnov Dávid , Offner Stella S. R. 
Published: July 2021

Abstract
Unlike the Sun, most observed stars are part of a multiple star system, but the formation of such systems is still not well understood. To study this problem, we utilize a run from the STARFORGE simulation suite that simulates the evolution of star-forming Giant Molecular Clouds (GMCs). The run starts with a GMC of an initial mass of 2 × 104
M
⊙ and takes gravity, magneto-hydrodynamics and non-isothermal thermodynamics into account. The simulation also includes stellar feedback in the forms of radiation and protostellar jets, where the radiation field is explicitly evolved. In this note, we discuss the orbital period, semimajor axis, multiplicity fraction, and multiplicity frequency distributions, and compare these with observations. We find good agreement with the observed multiplicity fractions but also find a deficit of mass ratios close to unity and close companions, which we attribute to the lack of resolved disks in our simulation.