bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparative analysis of damage criteria for screw rolling using computer simulation
Authors: Skripalenko M. M. , Romantsev B. A. , Galkin S. P. , Skripalenko M. N. , Danilin A. V.
Published: February 2021

Two-high screw rolling of billets was carried out using a MISIS-130D rolling mill. AISI 321 steel billets were deformed with feed angles of rolls of 6°, 12°, 18° and 24°. The diameter reduction was 17%, with the initial billets’ diameter being 60 mm. An axial fracture, the so-called Mannesmann effect, of the billets was observed after screw rolling. The experimental rolling was simulated using QForm finite element method software. Initial and boundary conditions were set in concordance with the experimental rolling. Several damage criteria were used for fracture prediction during computer simulation. The results of computer simulation of fracture prediction were compared with the billets fracture after screw rolling for stationary and non-stationary stages. The most effective parameter (in terms of fracture prediction) is triaxiality. The distribution of this parameter showed that the higher the feed angle value is, the lower the fracture risk is. Notably, the risk of fracture is lower at a stationary stage compared with the same risk of fracture at a non-stationary stage; the listed trends agree with experimental rolling results. The Oyane, Ayada, Brozzo, and Cockroft-Latham Normalized criteria are partly effective. These criteria are ineffective for fracture prediction 6 degrees feed angle of rolls because they showed that fracture is most probable at the billet’s surface, which contradicts the experimental rolling results. All these criteria are partly effective when predicting a less fracture risk at a stationary stage compared with the same criteria at a non-stationary stage or when predicting a decrease of fracture with increasing the rolls feed angle.
The study of influence of heat treatment procedures on structure and properties of the new high-strength steel with increased cold resistance
Authors: Poletskov P. P. , Kuznetsova A. S. , Nikitenko O. A. , Alekseev D. Yu.
Published: February 2021

The study of influence of different heat treatment procedures on microstructure and mechanical properties of the new high-strength weldable cold-resistant steel 20G2SMRA (20Г2СМРА) is conducted. Morphology of martensite after steel quenching, as well after quenching and consequent tempering, is examined using optical metallography and electron microscopy. Regularities of varying of microstructure parameters, hardness values (HV1) and impact strength KCV were revealed in this work at the temperature –60 °С depending on heating temperature for quenching and consequent tempering. Amount of residual austenite after quenching starting from the temperatures 850, 950 and 1000 °C was determined using X-ray structural phase analysis. The rational procedure of heat treatment was established as a result of the study; it provides combination of guaranteed yield strength σ0,2 ≥ 600 N/mm2 together with low-temperature impact strength KCV–60 ≥ 50 J/sm2 and ductility δ5 ≥ 17%. The obtained results of investigation are aimed for commercial putting into practice in the conditions of heavy plate production at 5000 rolling mill of Magnitogorsk Iron and Steel Works (MMK). The work was done under financial support of the RF Ministry of Education and Science within the framework of execution of the grant of RF President (Agreement No. 075-15-2020-205 dated 17.03.2020 (int. No. MK-1979.2020.8)).
Extraction by electroflotation of iron, chromium and aluminium hydroxides from aqueous solutions of sodium chlorides and sulphates in the presence of Mg2+, Cа2+ and surfactants of different types
Authors: Kolesnikov A. V. , Than So Htay , Kolesnikov V. A. , Kovalenko V. S.
Published: February 2021

This paper examines an electroflotation process in which iron hydroxides are recovered from chloride-sulphate solutions in the presence of surfactants of different types, as well as calcium and magnesium cations used as reagents. It was found that calcium and magnesium cations lower the recovery of iron hydroxides by 30 to 40%. Introduction of surfactants intensifies the recovery of iron (III) hydroxides making it reach 89 to 98%. It was found that the anionic surfactant NaDDS produces a positive effect on the recovery of chromium (III) hydroxides by electroflotation by raising the recovery rate by 30 to 40% and expanding the effective pH range to 9. NaDDS improves the recovery of the mixture of iron, chromium and aluminium hydroxides in electrolytic solutions (10 g/l). Water treatment procedures are described aimed at removing iron (II, III) ions and the iron/chromium mixture. This research study was funded by D. Mendeleev University of Chemical Technology of Russia, Project no. З-2020-004.
The role of indirect calorimetry in the treatment and rehabilitation of patients in long-term unconsciousness after brain damage
Authors: Krylov Kirill Yu. , Sergeev Ivan V. , Yakovleva Alexandra V. , Yagubyan Ruben S. , Yakovlev Alexey A. , Petrova Marina V.
Published: February 2021

Background. Nutritional support is an important part of the treatment of critically ill patients. However, there are no specific recommendations for patients in a long unconscious state after brain damage to determine their energy needs.
Aim. To determine the role of indirect calorimetry in assessing the energy expenditure of patients in prolonged unconsciousness after brain damage.
Methods. Prospective cohort study included 81 patients with brain damage who were treated in the intensive care unit. All patients with prolonged unconsciousness had stayed in the intensive care unit for more than 30 days. Mean age of patients was 48.4 16.3 years. Men were predominant (58%). Almost all patients had normal body mass index (BMI) (mean 22.8 6.2 kg/m2). The main cause of brain damage was severe traumatic injury (42%). There were also patients with consequences of subarachnoid hemorrhage (35%), stroke (19%) and hypoxic damage (4%).
Results. According to indirect calorimetry, mean energy requirements in patients in prolonged unconsciousness was 25.12 8.8 kcal/kg/day (1595.3 560 kcal/day). Variability of this value was high in this sample (10.661.6 kcal/kg/day, 6733514 kcal/day). According to urine nitrogen loss, mean protein requirement was 0.83 0.46 g/kg/day that was lower than the recommended values for critically ill patients. Variability of data obtained by indirect calorimetry was higher than that of the calculated values despite statistically similar energy requirements of patients. Variability of data obtained by Harris-Benedict equation ranged from 15.4 kcal/kg/day (1023 kcal/day) to 37.3 kcal/kg/day (2065 kcal/day). There was no relationship between energy expenditure and causes of brain damage. Moreover, significant correlation between metabolic rate, urine nitrogen loss and outcomes of disease was also absent.
Conclusion. Indirect calorimetry alone is not enough to prescribe optimal nutritional support in patients with prolonged unconsciousness if function of the gastrointestinal tract and other factors affecting energy expenditure are not considered.
Prof. M. N. Lapinsky. About degeneration and regeneration of peripheral nerves. - Kiev, 1904
Authors: Vorotynskiy B.
Published: February 2021

The work is divided into 4 chapters. The first chapter is devoted to a literature review of the issue of degeneration of peripheral nerve fibers. The next two chapters contain a description of the finest structure of the peripheral nerve according to the latest literature data and on the basis of the author's own observations. The last chapter presents the results of the author's experimental research on the question of the degeneration and revival of the nerve fiber in the peripheral nerve.
Criticism and bibliography. Odessa City Psychiatric Hospital. Report for 1903. Compiled by the hospital's residents under the editorship of senior physician B.I.Vorotynsky
Authors: Obraztsov B.
Published: February 2021

The report of the Odessa City Hospital, compiled according to the program of the previous report, consists of several chapters (medical part, internal life of the hospital, economic part, administrative part) and an appendix containing articles and notes of hospital doctors, the department of literary works of the mentally ill.
Siemerling. Graviditäts-und Puerperalpsychosen. "Lehrbuch der Psychiatrie". O. Binswanger und E. Siemerling. 1904, S. 179
Authors: Skuridin I.
Published: February 2021

The author begins his article on psychosis of pregnancy and the postpartum state with a brief introduction, in which he draws attention to the fact that the physiological processes of inception and reproduction had long been noted for the development of psychoses in women.
Letter from the mentally ill
Authors: Obraztsov V. N. , Kovalevskiy P.
Published: February 2021

The letter of the madmen, as an actual proof of mental suffering, served as the subject of our research only in the most typical forms of mental illness or psychopathic states
Evaluación de una intervención educativa en el estado nutricional de escolares de la colonia Menno de Boquerón, Paraguay 2016
Authors: Dyck Katja
Published: February 2021

Las enfermedades cardiovasculares son la causa de la mayoría de las defunciones a nivel mundial. Estas se pueden prevenir mediante hábitos alimentarios y estilo de vida saludables, que pueden ser promovidos a través de la educación nutricional. El objetivo de esta investigación fue describir los cambios en el estado nutricional por antropometría posterior a sesiones de educación nutricional en escolares del ciclo primario de la colonia Menno. El estudio es de diseño cuasi-experimental. Los sujetos de estudio fueron los alumnos inscriptos en las escuelas primarias privadas de la colonia Menno en el periodo 2016. Se realizaron 4 intervenciones de educación nutricional durante el año escolar y 2 sesiones de mediciones antropométricas (marzo y octubre). La mayoría de los escolares presentaron un IMC adecuado para la edad, se encontró mayor prevalencia de obesidad en varones y a lo que se refiere la circunferencia de cintura, se vio aumentada en las mujeres. Se puede concluir que se logró describir los cambios en el estado nutricional por antropometría posterior a las sesiones de educación nutricional.
Autocuidado en profesional de enfermería con relación al uso del calzado. Hospital de Clínicas, San Lorenzo- Paraguay 2017
Authors: Maidana-de Zarza Aida , Mareco Fabián , Caballero Lorena , Barrios Emmanuel , Bareiro Jorge
Published: February 2021

El objetivo fue analizar si el profesional de enfermería aplicaba el autocuidado en el uso del calzado en horario laboral. Es un estudio observacional, analítico, de corte trasversal con enfoque cuantitativo. La población estuvo constituida por 1.037 profesionales de Enfermería del Hospital de Clínicas, institución de carácter público, situada en la ciudad de San Lorenzo, Paraguay. Se incluyeron 366 profesionales de Enfermería a través de un muestreo probabilístico, la selección de la muestra fue multietápica con muestreo aleatorio simple. Se aplicó estadística descriptiva y chi2 para determinar asociaciones. Los hallazgos más relevantes fueron que mayoritariamente eran del grupo etario de 24 a 48 años con una media de 35 años; soltero, con una antigüedad de 10 años, con más de un empleo y del servicio de urgencias. Solo el 11,7% refirió conocer el calzado anatómico, sin embargo, 50,2% lo utilizaba. Más del 60% no tenía en cuenta las características del calzado anatómico al momento de adquirirlo, entre otros aspectos relacionados al utilizarlo en horario laboral. En el grupo etario de 31 a 35 años se concentró la mayor cantidad de trastornos músculo-esqueléticos (40%). En conclusión, el profesional de enfermería utilizaba de forma deficitaria el calzado adecuado; además, se ha encontrado evidencia de asociación (chi2 0,05) entre el tipo de calzado utilizado y la cantidad de trastornos músculo-esqueléticos que presentaba cada individuo.
The Effect of Intellectual Capital and Good Corporate Governance on Company Value Mediated by Competitive Advantage
Authors: Roos Ana Selvia , Budi Sulistiyo Agung , Prasetyo Whedy
Published: February 2021

Abstract:  This study examines the effect of the relationship between intellectual capital, good corporate governance, and firm value by using competitive advantage as mediation. Design/methodology/approach :  This study uses a sample of companies registered in CGPI during the 2014-2018 period. Data analysis using regression and path analysis.Research findings :  The research results show that the creation of a competitive advantage is inseparable from the role of intellectual capital and good corporate governance. In addition, competitive advantage is able to increase firm value but unfortunately it is not able to mediate company value.Theoretical contribution/ Originality :  This study uses M-VAIC to measure intellectual capital where in this measurement there is additional relational capital, and the use of competitive advantage as a mediating variable.Practitioner/Policy implication : This study proves the resourced-based theory which states that a company can win the competition by having a competitive advantage so that in the end it can increase firm value.Research limitation/Implication:  This study only includes CGPI listed companies as the research sample. In addition, the independent variables used are limited to intellectual capital and good corporate governance. Keywords:  intellectual capital, good corporate governance, competitive advantage, company value
Considering Local Integration for Refugees in Indonesia
Authors: Olivia Yessi , Nizmi Yusnarida Eka , Jamaan Ahmad , Iskandar Irwan , Saeri Mohammad , Deanty Haniva Sekar
Published: February 2021

This study discusses refugees who have been stranded in a transit country for years. These protracted refugees have to deal with a reality that the chance of getting resettlement in a third country has become slim, and the option of returning to their country of origin will only jeopardize their lives. Indonesia is not a state party to the 1951 Refugee Convention that lays a responsibility to assimilate refugees in the resettlement countries. Indonesia, however, has opened its door for refugees based on humanity’s solidarity and the fact that Indonesia’s legal framework on human rights acknowledges the right to seek asylum in other countries and abides by the non-refoulement principle. The situation has become problematic when the number of refugees coming to Indonesia has continued to increase, but Indonesia does not have a comprehensive refugee policy to support them. By looking at the case of refugees living in Pekanbaru, this study concludes that Indonesia should consider the local integration option as one of the viable solution to the protracted refugee situations in Indonesia.
O campo lexical referente ao rural: processos metodológicos e construção
Authors: Da Cruz Thyago José
Published: February 2021

Este trabalho se insere no âmbito da Semântica Estruturalista, em especial em Coseriu (1981) e Geckeler (1976), e se propõe a apresentar o processo metodológico de elaboração de um campo lexical, isto é, o campo lexical referente ao rural. Para tanto, detalha e discute as etapas assumidas na pesquisa, tais como: a seleção das unidades lexicais em dicionários, a análise de suas definições, a identificação do arquilexema, das dimensões, do classema, dos semas adicionais e dos elementos nucleares. Ressalta ainda a importância do método analítico da análise componencial nesse tipo de estudo, além de demonstrar a pertinência do uso de obras lexicográficas e de estudos de outras áreas diferentes da Linguística para a delimitação dos elementos dos campos lexicais.
Metáforas no discurso acadêmico em economia e biologia: evidências sobre a natureza do domínio-fonte
Authors: Ferrari Lilian Vieira , Fu Gabriele Felippe
Published: February 2021

Este trabalho enfoca a ocorrência de metáforas em textos acadêmicos de Economia e Biologia. Com base na proposta cognitivista de que metáforas linguísticas refletem processos de pensamento (LAKOFF & JOHNSON, 1980), investigam-se metáforas mentais (primárias e analógicas), subjacentes às expressões metafóricas observadas em cada área. A análise evidencia semelhanças quanto à escolha de metáforas primárias e diferenças no que se refere às metáforas analógicas: o artigo de Economia privilegia metáforas analógicas partindo do domínio-fonte de Biologia (ECONOMIA É SER VIVO), enquanto o artigo de Biologia recorre ao domínio-fonte de Economia (BIOLOGIA REPRODUTIVA É ATIVIDADE ECONÔMICA). Os resultados trazem as seguintes contribuições teóricas: (i) contraposição à visão tradicional de que a objetividade de textos científicos exige linguagem literal; (ii) evidências de que o processo de metaforicidade atua em textos acadêmicos, em diferentes níveis hierárquicos; (iii) evidências sobre a natureza do domínio-fonte, demonstrando-se que tais domínios também podem ser abstratos, desde que sejam intersubjetivamente verificáveis.
“Mas quem ia carregar uma nota fiscal?”: uma investigação da função modal de mas em língua portuguesa
Authors: Aquino Marceli Cherchiglia , Cinto Ana Laura Macruz , Kahil Tamires Arnal
Published: February 2021

Com o presente trabalho propomos uma investigação inicial acerca da categorização de mas como partícula modal (PM), adequando a sua classificação nas gramáticas do português brasileiro. Nosso principal objetivo foi, portanto, levantar hipóteses sobre a função modal da PM mas, identificando quais pressupostos são ativados por meio de seu uso, diferenciando-a de seu homônimo, a conjunção adversativa. Para auxiliar o estabelecimento de uma classe de palavras modais em português, partimos de uma investigação contrastiva com a língua alemã, que possui uma categorização homogênea das PMs. Como suporte a esse estudo, adotamos contextos de uso autênticos apoiados em tirinhas em língua portuguesa e alemã, contendo a PM mas, a conjunção mas e a PM alemã aber. Tal investigação permitiu delimitar a função modal da partícula mas, evidenciando a importância de estudos inclusivos para a identificação de uma classe de palavras modais no português brasileiro.
O modo de organização enunciativo no gênero artigo de opinião
Authors: Pauliukonis Maria Aparecida Lino , Vieira Bastos Maria Cristina
Published: February 2021

Este artigo tem por objetivo analisar como o modo de organização enunciativo se apresenta no artigo de opinião A metamorfose de W., escrito pelo articulista do jornal Folha de S.Paulo, Sérgio Rodrigues, publicado em 09 de maio de 2019. Com base no arcabouço teórico-metodológico da Teoria Semiolinguística do Discurso, de Patrick Charaudeau, propomos uma análise textual-discursiva, observando as categorias linguísticas da enunciação e os procedimentos de encenação discursiva, relacionando-os aos efeitos de sentido produzidos no texto.
Os “papéis falantes” de Lavradio: edição e comentários paleográficos de uma carta setecentista
Authors: Dores Marcus Vinícius Pereira das , Franco Daví Lopes , Marcotulio Leonardo Lennertz
Published: February 2021

O presente artigo tem por objetivo a divulgação e a popularização de uma carta do Marquês do Lavradio, que faz parte do corpus de uma pesquisa vinculada ao Laboratório de Estudos Filológicos (LabEFil/UFRJ). Esse material, sob um olhar científico e com um tratamento específico, serve de fonte documental para diversas pesquisas. Defendemos, por exemplo, que um manuscrito tratado filologicamente é uma peça fundamental para o estudo da história da língua, porque traz nas linhas e entrelinhas registros únicos de um estágio pretérito de língua. Para tentar entender, portanto, como o documento aqui abordado foi constituído sócio-historicamente, apresentamos, também, neste artigo, alguns comentários paleográficos, que visam a interpretação adequada desse texto manuscrito.
Dicionários escolares especializados: a lexicografia para o ensino fundamental
Authors: Hermont Arabie Bezri , Coscarella Manoela Moreira
Published: February 2021

A pesquisa que deu origem ao artigo é do campo da Linguística e da Educação e, por meio dele, se tentará responder como é realizado o trabalho com o uso do dicionário em livros didáticos. Além dos pontos relevantes que nortearam a pesquisa, como compreender as acepções acerca de processos linguísticos, como sinonímia e hiperonímia com vistas a ampliar o repertório de palavras e os mecanismos da retórica dos sujeitos inscritos numa prática pedagógica escolar, além de analisar esses processos nas coleções aprovadas no PNLD: Projeto Teláris, Português Linguagens e Singular & Plural; perceber a importância do uso do dicionário nessas coleções como prática lúdica, considerando possíveis jogos a serem realizados para desenvolver capacidades de argumentação e criatividade. O artigo ancora-se nos principais autores da Linguística: Antunes (2012), Basílio (2013), Leal (2003) e Vilela (1994). A análise realizada foi de natureza qualitativa e verificou-se uma frequência de atividades que trabalharam com a polissemia.
Interpretação de transitividade em gramáticas do português e do espanhol
Authors: Gurevich Dmitry
Published: February 2021

A transitividade, sendo uma das características semânticas principais do verbo português e espanhol, tem sido objeto de interesse dos gramáticos a partir das primeiras descrições dessas línguas. A interpretação do fenômeno da transitividade depende da posição teórica do autor (tradição clássica, estruturalista, gerativista ou funcionalista) e dos objetivos da gramática que pode ser teórica, descritiva, normativo-prescritiva ou didática. A transitividade é analisada nas gramáticas em duas óticas diferentes: abordagem léxico-sintática e abordagem sintático-estrutural. A primeira é tida como uma caraterística semântica particular do verbo transitivo que pode expressar uma ideia completa ou permite evitar a ambiguidade só quando é acompanhado de complemento. A segunda abordagem analisa a transitividade como uma caraterística da estrutura sintática cujo núcleo é formado por um verbo transitivo ou intransitivo. Mostra-se a dependência entre o tipo de abordagem da transitividade (léxico-semântica x sintático-estrutural) e o caráter da gramática (a teórica x a normativo-prescritiva).
A relação entre as categorias tempo e aspecto e o ensino de língua portuguesa: como fazem os livros didáticos?
Authors: Ferreira Lima Maria Auxiliadora , Silva Rodrigo Alves
Published: February 2021

Este trabalho objetiva analisar como dois livros didáticos de Língua Portuguesa de 6º ano (Tecendo Linguagens e Apoema) abordam a relação entre as categorias linguísticas tempo e aspecto. A pesquisa parte da discussão sobre tais categorias à luz da perspectiva da Enunciação, baseada em Benveniste (2006), Flores (2013), Travaglia (2016) e outros, e sobre ensino de língua materna, fundamentada em Possenti (1996), Antunes (2007), Bagno (2001) e Neves (2003). Analisou-se a visão de língua e de gramática das autoras em cada obra, como também os exemplos e os enunciados das questões referentes às categorias. Além disso, fez-se um comparativo entre os dois livros, o que apontou semelhanças quanto às atividades de identificação de tempos verbais e diferenças quanto à abordagem das categorias, pois enquanto o livro Tecendo Linguagens prioriza questões mais formais, privilegiando a categoria tempo, o livro Apoema, além da abordagem formal de tempo, suscita reflexões quanto ao aspecto e os sentidos produzidos por ele.
Аналіз ефективності позиціонування за допомогою навігаційних засобів відповідно до вимог зональної навігації
Authors: Kharchenko Volodymyr , Ostroumov Ivan , Kuzmenko Nataliia , But Volodymyr
Published: February 2021

У даний час проблема відмови основної системи позиціонування літального апарату є актуальною внаслідок дії факторів перевідбивання та ненавмисного глушіння радіосигналів під час поширення у просторі. Вибір ефективної системи резервного позиціонування є важливим завданням сучасної системи управління польотом. Резервні системи позиціонування повинні відповідати всім вимогам навігації, що базується на характеристиках, згідно із специфікацією, що використовується у повітряному просторі. Стаття спрямована на аналіз доступних алгоритмів позиціонування та систем для використання на цивільних літаках у разі відмови первинної системи позиціонування. Позиціонування за допомогою навігаційних засобів вважається основною альтернативою у випадку відмови первинної системи для повітряного простору України через достатню мережу наземних станцій. Результати аналізу ефективності у вигляді зон відповідності вимогам специфікацій навігації наведено для повітряного простору України на FL 290. Отримані результати можуть бути корисними припідготовцы пілотів для візуалізації зон, що не підтримують певні навігаційні специфікації, та у процесі модернізації наземної мережі радіонавігаційних засобів України.
Вибір системи показників, характеристичних ефективності системи управління безпекою польоту
Authors: Kharchenko Volodymyr , Pechevysty Ruslan , Alexeiev Oleh , Karapetyan Serob
Published: February 2021

Стаття ставить завдання оцінити саму систему показників за допомогою такого математичного апарату, який би дозволив виразити за допомогою числа загальну ефективність системи управління безпекою за необхідний проміжок часу або його потенційні можливості у формі, придатній для використання у відносинах між виробничою діяльністю та системою показників, тобто необхідна розробка спеціалізованого математичного апарату для оцінки ефективності та спеціалізованого середовища у вигляді програмного продукту - інформаційний моніторинг системи управління безпекою.
Адитивна технологія у виробництві повітряних суден
Authors: Hapon Viacheslav , Teplyk Yevgenii , Tuz Mykola
Published: February 2021

Мета: Метою даної статті являється вирішення проблеми пов’язаної з великою вартістю, високою трудомісткістю та високим рівнем відходів виробництва, а також труднощі у виготовленні деталей складних форм, які дозволяють знизити масу готового виробу, за допомогою субтрактивного виробництва. Результати: У результаті аналізу складена порівняльна таблиця характеристик адитивної і субтрактивної технологій, а також виділені переваги адитивної технології. Обговорення: Проаналізована інформація великих компаній в аерокосмічній  галузі, які застосували адитивну технологію виробництва і зроблений висновок про раціональність її впровадження в авіаційне виробництво.
Термопластичні матеріали - новий етап в житті літакобудівництва
Authors: Teplyk Yevgenii , Hapon Viacheslav , Tuz Mykola
Published: February 2021

Мета: Основна мета цієї статті - оновити процеси використання термопластичних матеріалів у сучасних конструкціях літальних апаратів. Результати: Результатом аналізу сучасного ринку авіаційних технологій та авіаційних матеріалів є активне використання термопластичних матеріалів у конструкціях літаків провідних виробників у галузі авіабудування. Обговорення: Характеризується впровадженням технологій використання композитних термопластів в аерокосмічних конструкціях іноземними авіаційними підприємствами.
Метод вибору оптимальної тривалості префіксу OFDM символів в супутникових каналах зв'язку аеронавігаційної системи
Authors: Kharchenko Volodymyr , Odarchenko Roman , Ismail Ali
Published: February 2021

Для дослідження методу вибору оптимальної тривалості префіксу OFDM-символів в супутникових каналах зв’язку була побудована оригінальна модель лінії зв'язку «Літак-супутник-наземна станція» за допомогою програмного забезпечення MATLAB Sіmulіnk. Модель з адаптивною модуляцією складається з джерела інформації, літального передавача, висхідної / низхідної лінії зв'язку, супутникового транспондера та приймача наземної станції. Розглянуто технологію OFDM для боротьби із наслідками багатопроменевості. Удосконалено метод боротьби із міжсимвольною інтерференцією на основі використання технології OFDM.
Оперативна корекція траєкторії повітряного судна на основі інформації бортових метеорологічних радіолокаторів
Authors: Averyanova Yuliya , Rudiakova Anna , Yanovsky Felix
Published: February 2021

Прогнозування та корекція траєкторії руху повітряного судна є одною з важливих можливостей для ефективного управління повітряним рухом. Одним з ключових факторів, що впливає на прогнозування траєкторії польоту є метеорологічний стан в аеропортах вильоту та посадки, а також впродовж траєкторії польоту. За таких умов важливим є широке використання можливостей систем оперативного одержання інформації про небезпечні погодні умови для короткочасної корекції траєкторії польоту. Бортові метеорологічні радіолокаційні системи є потужним та зручним засобом для одержання оперативних даних під час польоту у випадку виникнення несприятливих атмосферних умов. В даній роботі показані та обговорюються можливості корекції траєкторії польоту з використанням оперативної метеорологічної інформації, що одержується за допомогою бортових радіолокаційних систем.
Humanitarian energy interventions: the need and opportunities for systematic decision-making
Authors:   Coventry University, Nixon Jonathan , Koppelaar Rembrandt ,   Scene, Robinson Sandy ,   Scene, Crawley Heaven ,   Coventry University
Published: February 2021

This briefing paper highlights the potential benefits of humanitarian decision-making tools through the application of a decision support tool developed as part of the EPSRC-funded Humanitarian Engineering and Energy for Displacement (HEED) project led by Coventry University in partnership with Practical Action and Scene Connect. HEED draws upon social science and engineering expertise to better understand energy needs and identify solutions which produce socio-technical systems that encourage community resilience and capacity building.
Reutilização de bagaço de cana como bioadsorvente na remoção do azul de metileno em leito fixo
Authors: Jorge Isabella Ribeiro , Tavares Fernanda Peres , Santos Kassia Graciele dos
Published: February 2021

Atualmente, a indústria têxtil emprega diversos tipos de corantes e pigmentos, gerando uma imensa quantidade de efluentes para descarte. A remoção da cor pela adsorção é uma tecnologia bastante eficiente, barata e de simples operação. No entanto, devido ao elevado custo dos adsorventes comerciais, materiais alternativos estão sendo estudados, a fim de combinar uma boa capacidade de adsorção com o baixo custo. O bagaço de cana é o mais abundante resíduo da indústria sucroalcooleira do país e apresenta características estruturais que o torna um material adsorvente em potencial. O presente trabalho estudou a capacidade do bagaço de cana em adsorver o corante azul de metileno. Foram realizados experimentos para determinar a isoterma de equilíbrio, a cinética do processo e a dinâmica de adsorção em uma coluna de leito fixo. Os resultados mostraram que o bagaço possui elevado potencial para a adsorção do corante, com capacidade máxima de adsorção de 63,93 mg de corante/g de biomassa. A isoterma de adsorção foi favorável, representada pelo modelo de Sips, sendo a cinética de adsorção representada pelo modelo de pseudo-segunda ordem. As curvas de ruptura em leito fixo foram representadas pelo Modelo de Yan. O sistema operou de forma contínua, com uma concentração do corante na saída que garantiu a potabilidade da água.
Bacillus spp. em bebida industrializada, a base de soja com suco de frutas, em embalagem cartonada
Authors: Oliveira Renato Ventresqui , Savordelli Natalia Castejon , Santos Celso Tadeu Barbosa , Paiva Aline Dias , Pelli Afonso
Published: February 2021

Bacillus é um microrganismo comumente encontrado no meio ambiente. Na indústria é considerado um potencial agente de contaminações. O presente trabalho verificou a presença de uma espécie de Bacillus sp. em um suco de frutas a base de soja. O microrganismo foi identificado com base em baterias bioquímicas básicas. Pode-se concluir que os processos de limpeza e higienização realizados nas indústrias podem ser ineficientes para essa cepa em específico.
Editorial
Authors: Figueredo-Medina Gerardo
Published: February 2021

Estamos en 2019, año en el cual se lleva a cabo la trama de la película ‘Blade Runner’,un escenario en el cual la tecnología ha logrado el desarrollo de humanos sintéticos alpunto que no son distinguibles de los seres humanos. Sólo es posible hacerlo aplicandouna prueba específica de preguntas para obtener de los interrogados, respuestasemocionales, e identificar si se está ante un ser humano o una máquina.En la contemporaneidad no se ha logrado este nivel de desarrollo de seres artificiales,pero la inteligencia artificial está cada vez más presente en nuestra vida en múltiples dispositivos,a la vez que son más los productos y servicios que la incorporan.Esto reta el derecho en su tradicional rol de barrera de definir lo permitido y lo prohibido.Puesto que los avances científicos y tecnológicos y el uso de internet ponen en duda el Estadocomo barrera territorial para fijar límites de lo legal. Por ejemplo, en comercio internacional lasejecuciones de las transacciones no se dan ya en una en una sola y unívoca jurisdicción nacional,sino en varias, pudiendo ser incluso simultáneamente en varios países a la vez. Esto representaretos a los criterios territoriales de la aplicación de la ley y a la solución de diferencias bajo unaley concreta, suscitadas en transacciones de este tipo.
D.I. Mendeleev and Periodic system. Continued
Authors:   State Fire Academy of EMERCOM of Russia, Evdokimov Yu.M. , Gerasimova I.N. ,   State Fire Academy of EMERCOM of Russia, Grusheva T.G. ,   State Fire Academy of EMERCOM of Russia, Stepanov A.G. ,   State Fire Academy of EMERCOM of Russia
Published: February 2021

There has been presented a discussion of the article by G.L. Oliferenko, A.N. Zarubina, A.V. Ustyugova, A.N. Ivankin «To the 150th anniversary of the Periodic Table of Chemical Elements by D.I. Mendeleev», published in Forestry Bulletin, 2019, vol. 23, no. 6, pp. 117-123. DOI: 10.18698 / 2542-1468-2019-6-117-123
Minor components determination of tall oil-based biofuels that affect environment during combustion
Authors:   BMSTU (Mytishchi branch), Ivankin A.N. , Zarubina A.N. ,   BMSTU (Mytishchi branch), Kuleznev A.C. ,   BMSTU (Mytishchi branch), Zenkin A.N. ,   BMSTU (Mytishchi branch), Kulikovskii A.V. ,   V.M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Sciences
Published: February 2021

The results of determining the components of biofuel obtained from tall oil by transesterification in the presence of methanol are presented. It is shown that the main components of the feedstock and product based on it are natural fatty acids and their derivatives, the total mass fraction of which can be more than 80 %. The composition of the used raw material and the product of its processing — a mixture of FA methyl esters, contains impurities of organic compounds of natural origin, the amount of which ranges from 0,001 to 3 %. It is expedient to determine lipid components with an accuracy of ± 20 % by gas chromatography with flame ionization detection, which establishes the presence of individual FAs in the mixture at a level from 0,1 to 40 %. Analysis of the composition of minor components with a low content from 0,001 to 0,1 % can be carried out by chromatography with a mass-selective detector. It is shown that a lot of organic compounds of natural origin are found in the biofuel product, the list of which includes substituted derivatives of amines, heteroalcohols, alkenes, oxiranes, acetals. The product is obtained from vegetable raw materials and contains residues of biochemical substances of wood origin. The total amount of such compounds with chromatographic mobility up to 10 min, 10…20 min, and more than 20 min in the analysis did not exceed 1,5…2 %. The minimum concentration of some compounds was less than 0,001 % of the total components. The analyzed biodiesel samples obtained from distilled TM did not contain, according to the mass spectrometry data, harmful impurities of bromine, iodine, phosphorus and sulfur-substituted organic compounds. In the work, the conditions for determining the complete pool of minor compounds were selected, and the influence of the composition of analytes on the analysis result was discussed. A conclusion is made about the potential environmental safety of liquid biofuel based on HM due to its component composition, which provides generally safe fuel combustion in engines of technical devices.
Impact of Rubber Leaf Vermicompost on Tea (Camellia sinensis) Yield and Earthworm Population in West Tripura (India)
Authors: Chaudhuri Priyasankar , Jamatia Singh Kwrak Santua
Published: February 2021

Background: Vermicompost is a manure produced from organic waste through the activity of epigeic earthworms and microbes. Excessive use of chemical fertilizers for long term to increase the crop productivity have led to deterioration of soil health. Therefore, to assess the effect of vermicompost, as an alternative option to chemical fertilizer, on tea yield and earthworm population, field application of vermicompost on tea plantation was carried out for a period of two years (2015-2016) in Harishnagar Tea Estate, West Tripura, India. Methods: The experimental plot (25 sq. m) was set up using a random block design with 4 different rates of vermicompost viz. T0 (Control), T1 (5 t ha-1 year-1), T2 (10 t ha-1 year-1) and T3 (15 t ha-1 year-1) each having five replications. Composite soil samples were collected at the beginning and at the end of the experiment. Earthworms were also collected during the experimental period. Conclusion: Application of vermicompost significantly influenced the tea plantation soils, increased the tea yield along with earthworm population and was dependent on the vermicompost doses applied.
O dano moral por negativa de Home Care nos contratos de saúde
Authors: Bidoia dos Santos Marcelo
Published: February 2021

O presente trabalho buscou analisar o posicionamento do Tribunal de Justiça do Estado de São Paulo (TJ/SP) em relação à concessão de indenização no pleito por danos morais por negativa de tratamento domiciliar (home care) nos contratos de saúde desde a edição da Súmula n.º 90 do TJ/SP. Para tanto, utilizou-se como método de procedimento a jurimetria, pautada na estatística, tendo por técnica de pesquisa a análise de conteúdo dos acórdãos analisados, extraindo deles os fundamentos jurídicos utilizados pelos desembargadores. Assim foi possível quantificar o número percentual de pleitos por danos morais julgados procedentes e improcedentes, bem como sua distribuição por órgão julgador; determinar a medida representativa das condenações em valores monetários; e identificar as principais teses jurídicas utilizadas como fundamento para procedência ou improcedência do pleito moral indenizatório.
The late 19th century archive in contemporary Latin American literature
Authors:   Universidad Nacional de Rosario. Argentina, Garbatzky Irina ,   Consejo Nacional de Investigaciones Científicas y Técnicas. Argentina, Viú Adagio Julieta ,   Universidad Nacional de Rosario. Argentina,   Consejo Nacional de Investigaciones Científicas y Técnicas. Argentina
Published: February 2021

Late 20th and early 21st century Latin American literature rereads and problematizes late 19th-century Latin American Modernism. This article examines some of these genealogies in order to analyze the significance of this literary dialogue in our present time.
Bazaar, merchandise and decadence: Antonio José Ponte and Julián del Casal
Authors:   Universidad Nacional de Mar del Plata. Argentina, Fernández Rocío
Published: February 2021

The fascination of Latin American modernism for 19th century French fashion merchandise has been widely addressed in literary theory. Texts filled with diverse cultural materials, textures and objects configured a poetics of the bazaar that became part of a series of strategies through which Latin American literature defined and linked itself to hegemonic aesthetics of the 19th century. The poems and chronicles of Cuban writer Julián del Casal (1863-1893) are no exception; this proliferation of merchandise reveals how the gaze and the images become configured as empty fictions, filled by a cosmopolitan desire. This feature, tied to the function and configuration of images in Cuban modernism, makes possible an anachronical reading of the presence of State merchandise at the other end of the century: Antonio José Ponte’s decadent reality in post-Soviet Cuba.
Educational research as a threshold of meanings to come
Authors:   Universidad Nacional de San Martin. Argentina, Grinberg Silvia ,   Consejo Nacional de Investigaciones Científicas y Técnicas. Argentina,   Universidad Nacional de la Patagonia Austral. Argentina, Porta Luis ,   Universidad Nacional de Mar del Plata. Argentina,   Consejo Nacional de Investigaciones Científicas y Técnicas. Argentina
Published: February 2021

In this dossier, we propose to install the question about criticism, about how to remain critical in times of digitization of culture that seems to drag with it precisely any perspective of knowing that is not willing to think beyond the drifts of applicability. In this sense, educational research opens as a journey, as a search for readings, techniques, developments and forms of conceptualization that bring us closer to understanding what schooling is being today. The group of articles that make up this special dossier on educational research opens up new meanings, as thresholds that project us to take the floor in public affairs and delves into the threads, the power relations and the crystallizations of such a social practice. Central as is the one that allows those who come to the world to be part of it.
Train to research. Epistemological and pedagogical approaches to the educational field in Education Sciences
Authors:   Universidad Nacional del Nordeste. Argentina, Flores Miriam Liset ,   Consejo Nacional de Investigaciones Científicas y Técnicas. Argentina, Bar Aníbal Roque ,   Universidad Nacional del Nordeste. Argentina
Published: February 2021

The article aims to reconstruct the formative-disciplinary practices that occur in the territories for disciplinary research in Education Sciences undergraduate course. For the development of the work, we position ourselves in a qualitative methodology, specifically in the case studies. In this sense, the cases selected for this study were two teams from the subjects General Didactics and History of Argentine Education, which were reconstructed from in-depth interviews with directors, researchers, undergraduate and graduate students. We fully identified three formative territories for disciplinary research: the field, the office, and the extra-institutional territories, in each of which diverse pedagogical links were configured according to the limits imposed by the epistemology of the discipline. Although each formative territory has singular connotations, there is a dialectic among them that feeds back, communicates and constitutes them.
Personal network and educational pathways of women with university studies with a social plan
Authors:   Universidad del Aconcagua, Arrigoni Flavia ,   Argentina,   Pontificia Universidad Católica Argentina; Argentina, Paredes Héctor Alejandro ,   Universidad del Aconcagua; Argentina, Muñoz Rodríguez Laura Mariela ,   Universidad de San Luis; Argentina
Published: February 2021

The present study addresses the life and educational trajectories, personal network, obstacles and achievements of three women who, as holders of a social plan, obtained a bachelor's degree in a universitylevel career. This is a mixed method research, with qualitative predominance, with a concurrent nested or embedded design. Objectives: to know life and educational trajectories of these women and to describe their personal networks, identifying their characteristics and the type of support received from them. The instruments used to collect the information were an ad hoc semi-structured interview and personal networks analysis. Egonet software and qualitative analysis were used in the social media analysis for the interviews. Participants' life trajectories allow us to glimpse an accumulation of disadvantages or exclusions that, due to certain personal characteristics (perseverance and expectations of achievement), to their personal networks (union and group cooperation) and to the opportunity provided as beneficiaries of a social labor plan to access to a higher level education, they were able to complete their studies.
What perspective? Which gender? From comprehensive sex education to minority stress
Authors:   Universidad de Buenos Aires. Argentina, Radi Blas ,   Consejo Nacional de Investigaciones Científicas y Técnicas. Argentina, Pagani Constanza ,   Universidad de Buenos Aires. Argentina
Published: February 2021

The “gender perspective” seems to be the key to solve a series of pressing problems on the most varied issues. All the expectations projected on it make it an unavoidable reference in certain academic and political contexts. On the other hand, its ontological assumptions, epistemological framework, and practical implications, which are the central themes of this work, have been scarce. Our aim is to raise some problems of this perspective -as expressed in our context- and develop its scope. Following these axes, we will apply our considerations on the proposals of Comprehensive Sexual Education (ESI in Spanish). Our contention is that when we focus on the experiences of trans* people, the so-called “gender perspective” is all too often part of the problem to be solved, rather than its solution.
Stain ESI menstrual red
Authors:   Universidad Nacional de Mar del Plata. Argentina, Barone Zallocco Ornela
Published: February 2021

The concerns presented in this article appeal to give an account, through biographical narratives, of the experiences felt by menstruating people when staining themselves in educational spaces. In this sense, the urgent need for a comprehensive menstrual education is addressed within the materials of Comprehensive Sex Education. In the search to demystify the normalizing and stereotyped discourses. The purpose then is to write and register the menstrual cycle in ESI. Stain ESI menstrual red. Of the blood that is not spilled by violence and that iterifies to be hidden. As if containing it were possible, menstruating bodies are required not to make visible the traces or records of their cyclical sexuality.
"They tell you that in school you'll be better off, but it's the same old thing”. The educational system between necropolitics and transformative pedagogies
Authors:   Universidad de Buenos Aires. Argentina, Arribalzaga María Belén ,   Universidad Nacional de Tres de Febrero; Argentina
Published: February 2021

This work is grounded in my professional practice as a teacher in middle schools in vulnerable neighborhoods in the southern part of the city of Buenos Aires. In this article I will focus on the relationship between middleschool education for teenagers from vulnerable contexts and specific processes of violence and exclusion such as "slow death" and "necropolitics". The hypothesis I will present is that in certain contexts, the educational system encourages and (re)produces a politics of death that exposes these male identities to greater risk. I will also contend that this has its correlation in the construction of identities. Finally, I will suggest that critical and queer pedagogies can provide tools for resistance and transformation.
Delay in the retirement of Chilean academics: a vision of their perceptions of the future
Authors:   Universidad de Sevilla, España, Sánchez Brkic Daniel , Mayor Ruiz Cristina ,   Universidad de Sevilla, España
Published: February 2021

The objective of thisarticleis to report theresults of a doctoral research currentlycompleted whose objectiveis to know the causes why university academics in Chile, having retired or not from the academic work, delay the beginning of there tirement stage; specifically, the perceptions they have regarding their future are exposed. Theresearch of a mixednatureinvolves a quantitative and a qualitativephase. Theresults of the qualitative deepening phase are presented in this article. For these purposes, 21 academics between 55 and 76 years belonging to nine public and private universities in the country and working in nine different career shave been interviewed. The results show that Chilean academics would be delay ingthestart of their retirement period main lydue to vocational, economic, health and legal factors.