bluuebunny/crossref_metadata_2025 huggingface dataset:
Como construir o Planejamento Educacional Individualizado (PEI) dos estudantes da educação especial
Authors: Gonçalves Patricia
Published: October 2024

Este artigo aborda por meio de uma revisão bibliográfica e experiência pessoal da autora a construção do Planejamento Educacional Individualizado (PEI) para estudantes da educação especial, apresentando quem tem direito a esses planos e destacando seu papel na promoção da equidade em sala de aula. A análise inicia-se informando a quem cabe a responsabilidade da construção do PEI e questionando se este ato, por si só, configura prática inclusiva. Bases legais para o direito ao PEI são contextualizadas, enfatizando a importância do diagnóstico ou avaliação na fase inicial. O artigo apresenta todo o passo a passo para construção do PEI, abrange entrevistas com famílias, aplicação de avaliações pedagógicas e elaboração de estudos de caso, priorizando o conhecimento individual do aluno, compreendendo todas as suas necessidades, dificuldades e potencialidades. No contexto da sala de aula e do Atendimento Educacional Especializado (AEE), estratégias específicas são discutidas, destacando práticas benéficas para o desenvolvimento educacional inclusivo. O artigo conclui explorando estratégias de avaliação para o PEI, sublinhando a importância da avaliação contínua para a eficácia desse instrumento. Este artigo proporciona uma visão abrangente e aprofundada, contribuindo para a compreensão e aprimoramento das práticas relacionadas ao planejamento individualizado na educação especial, promovendo a equidade em sala de aula.
As novas tecnologias no contexto da educação - cibercultura: desafios para a escola
Authors: Mota Denis Rodrigues , Mota Denis Rodrigues
Published: October 2024

O presente artigo tem como objetivo refletir sobre as transformações tecnológicas e os desafios da escola/educação. As práticas educacionais, bem como os profissionais da educação sofrem mudanças com as novas tecnologias digitais. Os conflitos tecnológicos após a globalização aparecem como um processo/movimento sociopolítico. As novas tecnologias digitais têm proporcionado à educação voltar-se para as novas metodologias de ensino e acompanhar o uso no mundo digital. A cibercultura proporciona a conectividade, a hipertextualidade e a interatividade dos indivíduos na sociedade. Este artigo expõe dados fornecidos pelas referências bibliográficas e reflexões acerca do tema, sendo, portanto, o resultado de uma pesquisa de cunho bibliográfico.
PRÁTICAS DO ENSINO DE ARTE ATRAVÉS DO USO DA TECNOLOGIA: A UTILIZAÇÃO DO CELULAR E APLICATIVOS NAS AULAS DE ARTE
Authors: Miranda Aldenízia Rodrigues Tavares , Marques José Jayme da Silva
Published: October 2024

O presente trabalho aborda, as práticas do ensino da arte através do uso da tecnologia: a utilização do celular e aplicativos nas aulas de arte, a partir da experiência da pesquisadora como professora de Arte no ensino fundamental, com aulas para o oitavo e nono ano. A presente proposta pretende fazer uma articulação reflexiva entre arte e tecnologia no contexto escolar no ensino fundamental. São muitas as vantagens e as possibilidades da era digital e que podem trazer avanços significativos, levando nos a enriquecer nossas práticas docentes, diversificando os recursos utilizados na prática do ensino na disciplina de artes e oferecendo novas alternativas de interação e de aprendizagem. O objeto da presente pesquisa é pontuar, descrever e analisar como foi o uso do telefone e de outros aplicativos durante as aulas de artes ministradas pela pesquisadora, aliando arte à tecnologia como fontes de inesgotáveis possibilidades educativas, colaborando com as pesquisas na área.
A VOZ QUE CLAMA NO DESERTO: A PRESENÇA DA ARTE NA TEOLOGIA DA LIBERTAÇÃO
Authors: Mendonça Lucas Cardoso Santos , Pinho Edna Maria Cruz
Published: October 2024

Este artigo trata sobre a presença da arte na Teologia da Libertação como uma perspectiva a favor do povo pobre, do camponês, das mulheres, dos indígenas e dos marginalizados da sociedade brasileira, por uma prática espiritual cristã que os leve à luta contra as injustiças sociais, no processo de libertação e da emancipação humana das opressões do sistema capitalista. A problemática é entender a função e o papel das artes visuais na prática da Teologia da Libertação. Nesse sentido, este artigo tem o propósito principal de iniciar um processo de compressão do papel e da função da arte na Teologia da Libertação. Os objetivos desta pesquisa são analisar o contexto histórico desse movimento religioso e a contribuição das artes visuais na proposta metodológica das Comunidades Eclesiais de Base “CEBs”. A metodologia utilizada é a pesquisa bibliográfica, e o resultado apontado por esse artigo nos mostra que as artes visuais têm a função de mostrar ao indivíduo a sua realidade, a sua ânsia de libertação e o desejo de um mundo melhor. Por meio das pinturas de Maximino Cezero Barredo, na cidade de São Félix do Araguaia, no estado do Mato Grosso, a arte ganha a função de fazer algo novo, de promover uma sociedade livre das injustiças e das opressões do capitalismo.
ARTETERAPIA COM GRÃOS: UMA VIVÊNCIA COM EDUCANDOS NA SALA DE RECURSOS MULTIFUNCIONAIS
Authors: Dutra Priscila Ferreira , Siqueira André Luiz Moura
Published: October 2024

Este trabalho foi desenvolvido na Escola Estadual Dr. Joaquim Pereira da Costa, situada na cidade de Gurupi, estado do Tocantins, com vinte e um alunos do Ensino Fundamental com necessidades educacionais especiais. O principal foco foi a utilização da arteterapia com grãos durante o atendimento dos educandos na sala de recursos multifuncionais da escola, para despertar no aluno a percepção visual, habilidades motoras e momentos de descontração. Ao longo do processo, foi reconhecida a importância das práticas artísticas no desenvolvimento da sensibilidade, da socialização e da educação dos indivíduos com necessidades especiais, bem como o uso da arte como forma de terapia, pois compreende-se que, ao promover diferentes atividades e habilidades, processos criativos podem ser incorporados à educação especial com o objetivo de identificar as habilidades e necessidades de cada aluno alvo de aprendizagem, como afirma Vieira (2017). Sendo assim, o presente trabalho trata de assuntos como: a constituição histórica da arteterapia; a importância da Educação Inclusiva e como podemos trabalhar a arteterapia na escola.
TECENDO MANDALAS - ESTICANDO ALGUNS FIOS : A MANDALA ENQUANTO CAMINHO POSSÍVEL E A FAVOR DA ARTE EDUCAÇÃO
Authors: Oliveira Vanessa Rodrigues da Silva , Siqueira André Luiz Moura
Published: October 2024

O presente artigo tem como objetivo analisar a importância da mandala enquanto potencializadora de conhecimentos. Sabe-se que o estudante, estando em qualquer meio, pode desenvolver-se individualmente e socialmente através de processos de aprendizagem e de vida, sendo que esses dois processos são interdependentes. E é justamente nesses dois processos que se origina a parte imaginativa e criativa da criança. É notório que cada indivíduo traz consigo seu próprio potencial, o qual vai se transformando de acordo com sua experiência, tendo como resultado a criação. Criar é dar existência ao que se foi imaginado, e a criança (o ser humano) é capaz de imaginar, ampliar e transformar, desenvolvendo, assim, a sensibilidade, o senso crítico, a coordenação motora e intelectual. Desse modo, é importante que nós, enquanto artistas educadores, saibamos valer nos da curiosidade das crianças ou das práticas artísticas/criativas com as quais trabalhamos, elencando a imaginação e a ludicidade. Esse procedimento pode ser feito a partir das variadas, distintas e diferentes proposições: seja transformando as expressões em rabiscos, desenhos, pinturas ou, quem sabe, utilizando a mandala, para potencializar as expressões das emoções desse ser humano que está em formação. Destarte, seria possível considerar uma atividade a partir da pintura com mandalas, enquanto gatilho e dispositivo para uso de atividades escolares e suas práticas artísticas? Para esse público participante, poderíamos considerar (desde a educação infantil) que atividades envoltas dessas práticas também são geradoras e provocadoras de conhecimento? O presente artigo, enquanto proposta de trabalho e encaminhamento, apresenta essa intenção, a partir de uma constatação de vivências e possível estreitamento entre o vivenciado, a Arte Educação e a mandala. Porém, nesse percurso, é existente também: os desvios, o tropeço e seus erros. São com os fios desses caminhos, que representam aqui o nosso caminhar dentro das respectivas áreas de conhecimento. Este trabalho, então, toma o desempenho como proposta e pretende abrir espaço para as articulações que valorizem o sujeito em suas competências e apetências enquanto elemento gerador de conhecimento.
ARTE NA ALDEIA INDÍGENA: O POTENCIAL DO ECOBRINQUEDO NA CONTAÇÃO DE HISTÓRIAS E NA CRIAÇÃO DE PERSONAGENS
Authors: Almeida Sandra Núbia Ribeiro de Queiroz , Pinho Edna Maria Cruz
Published: October 2024

O presente trabalho trata de um relato de experiência sobre a contação de histórias e criação de personagens a partir da utilização de materiais recicláveis para fabricação de ecobrinquedos, realizado no formato de oficinas pedagógicas nas escolas indígenas Watakuri e Tainá, pertencentes às Aldeias Boa Esperança e Canuanã, localizadas na Ilha do Bananal, Estado do Tocantins. As oficinas fizeram parte das ações do Projeto de Pesquisa “(Multi) letramentos: contribuições para o ensino”, desenvolvido pela Universidade de Gurupi - UnirG em parceria com o Campus Gurupi do Instituto Federal de Educação, Ciência e Tecnologia do Tocantins - IFTO; Universidade Federal do Norte do Tocantins - UFNT; e Diretoria Regional de Educação DRE Gurupi/SEDUC. O referido projeto atende ao objetivo do macroprojeto de pesquisa com parecer CONEP nº 3.926.694. A questão problema procurou saber se seria possível, por meio de eco brinquedos, desde sua fabricação até a criação de personagens, provocar nos estudantes indígenas estímulos relevantes para a contação de histórias. O texto tem, portanto, como objetivo relatar uma experiência de oficinas de produção de ecobrinquedos e de contação de histórias com a participação de 26 estudantes, na aldeia Canuanã e 18 estudantes na aldeia Boa Esperança, sendo todos eles estudantes indígenas do Ensino Fundamental, do 3º ao 5º ano, destacando a importância da utilização de materiais naturais no cotidiano das práticas culturais do povo Javaé. O estudo, de abordagem qualitativa, utilizou a metodologia do relato de experiência e da revisão de literatura, tomando como base os referenciais dos autores D'Avila (2017); Vasconcelos (2010); Cerisara (2002) entre outros. Os resultados mostraram que o trabalho com arte a partir da produção de ecobrinquedos - quer seja em ambientes como as ecobrinquedotecas, que são espaços de manifestação de trabalhos lúdicos que utilizam o aproveitamento de materiais recicláveis e a preservação ambiental; quer seja na produção dos mesmos na sala de aula na aldeia indígena - tem a mesma eficiência pedagógica, independente das diferenças culturais. Foi constatado também que a produção do ecobrinquedo estimula as crianças e promove um ambiente motivacional bastante acolhedor e integrador. Nas oficinas ministradas de uma forma lúdica às crianças, notou-se que a produção de fantoches como ecobrinquedo estimula a criatividade e a imaginação das crianças, promove a interação e a comunicação, estimula a criação de personagens e a construção de falas para a contação de histórias. A investigação também mostrou que há a necessidade do resgate histórico sobre o brincar, brinquedos e brincadeiras que fazem parte da memória cultural do povo Javaé, mas que, momentaneamente, estão esquecidos nos grupos das aldeias estudadas.
Os Desafios da Educação brasileira
Authors: Silva Alana Gabriele da , Alvarenga Ana Paula Oliveira Becker , Obara Ana Tiyomi , Santos Antocléia de Sousa , Moreira Célia dos Santos , Milan Davi , Dantas Erica da Silva , Medeiros Francimar de Lima , Cabral Grace Gotelip , Araújo Helenice Barroso , Moreira Jairo Barbosa , Rodrigues José Raimundo , Loiola Kércia Míria Jorge , Rocha Leliane Aparecida Castro , Gianordoli Márcia Rosângela C. da Fonseca , Leite Maria Alzira , Simão Maria Veronica Oliveira , Rodrigues Marília dos Santos Franklin e , Souza Raphaella Guimarães de , Carvalho Simone Alves de , Soares Tainara de Sousa
Published: October 2024

O livro “Os Desafios da Educação Brasileira” é uma coletânea de artigos que abordam temas cruciais e contemporâneos da educação no Brasil, oferecendo uma análise aprofundada dos diferentes aspectos que impactam a qualidade e a equidade educacional no país. Cada capítulo traz uma reflexão sobre um tema específico, apresentando desafios e propondo soluções para superar as barreiras encontradas no contexto educacional brasileiro.
Sound and Horror in the Giallo Film
Authors: Pollard Damien
Published: October 2024

9781476682488, 9781501390852, 9781496844460
Moments of Rupture: Woolf, Whitehead, Deleuze
Authors: Quigley Gabriel
Published: October 2024

Abstract: Although Virginia Woolf's extensive reflections on "the moment" have fascinated critics ever since the publication of "The Moment: A Summer's Night" in 1947, her conception of the moment has been interpreted as either a privileged instant (temporal) or an aleatory insight (psychological). These studies have neglected the influence of her contemporary and acquaintance Alfred North Whitehead, who claimed that reality is comprised of "events," or temporally autonomous, radically contingent, and non-substantialist units of reality. Woolf's "moment" reflects Whitehead's conception of "event" and, via Whitehead, has an unexpected afterlife in Gilles Deleuze's conception of "the event." The entanglement between Woolf's moment, Whitehead's "event," and Deleuze's l'événement yields an alternative modernist sensibility characterized by wonder at a world in which the most ordinary occurrences—such as the leaves fluttering across the lawn, or a bird taking wing—are baffling, miraculous, revolutionary.
"A Fascination, Strange and Compelling": Marriage as the Prevention of Queerness in Nella Larsen's Passing
Authors: Wright Lillianna G.
Published: October 2024

Abstract: Nella Larsen's Passing has been commonly read through a queer lens that presents Clare and Irene's relationship with each other as erotic yet repressed. Irene's repression of her desire and the subsequent narrative can be read as stemming from compulsory heterosexuality. This causes Irene to uphold the institution of marriage at any cost to prevent the sexual freedom that could lead to open queerness on not only her part, but also Brian's and Clare's. All three characters interact with their queerness in conjunction with their race, attempting to use or suppress it for different societal ends. As such, the queer dimension to Passing can be understood as standing in direct opposition to the inevitability of heterosexual union, as Irene alone attempts to preserve heterosexuality, even to the death.
Kualitas Sensorik Dan Kimia Minuman Fungsional Berbasis Daun Melinjo Dengan Penambahan Daun Mint Dan Lemon
Authors: Rosyidah Dina , Prayitno Sutrisno Adi , Rahma Amalia
Published: October 2024

Penelitian ini bertujuan untuk mengetahui perbedaan kualitas sensorik dan kimia (kadar air dan aktivitas antioksidan) pada tiga formulasi minuman fungsional berbasis daun melinjo dengan penambahan daun mint dan lemon. Pada penelitian ini menggunakan tiga formulasi dengan bahan daun melinjo, daun mint dan lemon yaitu, F1: 50 g: 30 g: 20 g. F2: 40 g:40 g:20 g. F3: 30 g:50 g:20 g yang akan diuji hedonik oleh 36 panelis dan diuji kimia (kadar air dan aktivitas antioksidan). Uji hedonik dianalisis menggunakan uji kruskall wallis dan diuji lanjut menggunakan uji man whitney. Uji kimia (kadar air dan aktivitas antioksidan) dianalisis secara metode deskriptif. Hasil penelitian ini menunjukkan bahwa uji kualitas sensori pada F2 dan F3 tidak memiliki perbedaan dari warna, aroma dan kejernihan dibanding dengan F1. Pada hasil aroma dan kejernihan didapatkan sig <0,05 sehingga perlu adanya uji coba lanjutan dengan menggunakan uji man whitney. Pada hasil uji kadar air, F2 (7,71%) dan F3(7,56%) memiliki kadar air yang sesuai SNI yaitu 8% dari pada F1(8,34%) dan pada hasil uji aktivitas antioksidan, pada F1(37.4 ppm) dan F2(45,34 ppm) memiliki aktivitas antioksidan sangat kuat dibanding F3(59,3 ppm). Dari hasil penelitian dapat disimpulkan bahwa formulasi yang paling baik untuk dijadikan minuman herbal adalah F2 (40:40:20).
АНАЛІЗ СУЧАСНОГО СТАНУ СЕНСОРІВ ДЛЯ ІНЕРЦІАЛЬНОЇ НАВІГАЦІЇ БЕЗПІЛОТНИХ ЛІТАЛЬНИХ АПАРАТІВ
Authors: ГУЛА В. С. , ГРИГА В. М.
Published: October 2024

Мета. Дослідити сучасний стан інерціальних сенсорів для навігації безпілотних літальних апаратів (БПЛА), проаналізувати їхні переваги, недоліки, методи корекції похибок та інтеграції з іншими навігаційними системами, а також визначити перспективи розвитку та сучасні тенденції в цій галузі.
Методика. Проведено систематичний огляд наукової літератури, технічних документів та досліджень, що стосуються різних типів інерціальних сенсорів, їхнього застосування в навігації БПЛА, та методів злиття даних. Використано порівняльний аналіз сучасних технологій та методів до інтеграції сенсорів.
Результати. Систематизовано основні види інерціальних сенсорів, їхні переваги та недоліки, а також виявлено найбільш ефективні методи корекції похибок та інтеграції з іншими системами. Досліджено сучасні тенденції, такі як використання штучного інтелекту, розвиток мікроелектромеханічних систем та появу нових типів сенсорів, що сприяють підвищенню точності і надійності навігації БПЛА. Окрему увагу приділено інтеграції інерціальних вимірювальних блоків з іншими навігаційними сенсорами, такими як глобальна навігаційна супутникова система та візуальні сенсори, для забезпечення більш надійної та точної навігації. Систематизовано методи корекції похибок, такі як фільтр Калмана та адаптивні фільтри, які використовуються для підвищення точності навігаційних систем.
Наукова новизна. Вперше систематизовано та проаналізовано типи інерціальних сенсорів та визначено дані щодо їх переваг та недоліків у контексті вимог до навігації в сучасних навігаційних системах БПЛА.
Практична значимість. Отримані результати можуть бути використані для удосконалення навігаційних систем БПЛА, підвищення їхньої надійності та точності. Рекомендації щодо вибору та інтеграції сенсорів сприятимуть розвитку нових технологій у сфері безпілотних літальних апаратів.
La evolución de una imagen simbólica religiosa a un producto comercial masivo. La Virgen de Guadalupe
Authors: Cruz Leyva Claudia Laura , Rubio Toledo Miguel Angel
Published: October 2024

Se realiza la descripción de la forma en que la imagen de la Virgen de Guadalupe ha sido utilizada y modificada a través de la historia, desde la imagen original del ayate de Juan Diego, hasta la reciente caricaturización de la misma como producto comercial, lo anterior desde una revisión bibliográfica y referentes empíricos. En este sentido, se relata también la manera en que este símbolo religioso fue utilizado como elemento de cohesión social estratégico en diversos momentos de la historia de México, particularmente en eventos armados tales como la Independencia o la Revolución, hasta la masificación con fines lucrativos, logrando consolidar la condición de aculturación identitaria para el nuevo posicionamiento de esta imagen como estrategia de marca masiva religiosa.
Metodología para identificar discontinuidades en macizos rocosos mediante procesos semiautomáticos con fotogrametría y UAV
Authors: Rodríguez Servín Marsella Gissel , Morales Rosales Luis Alberto , Arreygue Rocha José Eleazar
Published: October 2024

Con tecnologías de adquisición remota como la fotogrametría es posible obtener información del macizo rocoso en formatos digitales que permiten definir su posición y geometría, reduciendo las adversidades del método convencional como la dificultad de acceso al sitio, el tiempo de captura, imprecisión en mediciones o la influencia del criterio del experto al realizar estimaciones. En este trabajo, se presenta una metodología que utiliza la técnica de fotogrametría con naves aéreas no tripuladas (UAV) y procesos de toma de decisión semiautomáticos para la identificación de discontinuidades de un macizo rocoso. Mostrando un caso de estudio de prueba de la metodología y se valida con la metodología convencional. Además, se compara con otras metodologías y se analizan las ventajas y limitaciones de la propuesta.
Giving a voice to families of people with intestinal stoma: reflections on training, care and management
Authors: Simon Bruna Sodré , Lacerda Maria Ribeiro , Schimith Maria Denise , Dalmolin Angelica , Gomes Eduardo da Silva , Santos Evelyn Boeck dos , Girardon-Perlini Nara Marilene Oliveira
Published: October 2024

Objective: To reflect on aspects of training, care and management that contribute to supporting families of people with intestinal stomas. Method: A theoretical reflection study based on a substantive theory developed with 12 families of people with ostomies due to intestinal cancer. Results: With the development of the substantive theory, it was possible to give a voice to families of people with ostomies due to intestinal cancer based on what they identify as the need for multidisciplinary and interdisciplinary care capable of completing the procedural phases experienced throughout the investigated trajectory. For these care changes to be effective, healthcare professional training must include intestinal ostomy care in their curricula. Also, changes in intersectoral management are updating the Management of Users with Disabilities, investing in infrastructure, mainly in adequate public restrooms. Conclusion: This reflection demonstrates the importance of implementing these changes in training, care and management, which help in planning family-centered care, considering that the family provides home care based on interactions, and helps and empowers their family member to implement self-care for ostomy.
Using the modified method of auxiliary sources in the diffraction problem of an electromagnetic impulse on a subsurface impedance cylinder
Authors:   Kirensky Institute of Physics Federal Research Center KSC  - Siberian Branch Russian Academy of Sciences The Russian Federation, 660036, Krasnoyarsk, Akademgorodok 50 bld. 38., Muzalevskiy K.V.
Published: October 2024

In contrast to the classical method of auxiliary sources (MAS) with the location of discrete sources (DS) on a closed additional contour, this article investigates the use of a complete system of functions for describing DS fields localized on an open curve in a modified MAS (MMAS). The MMAS was applied to solve a two-dimensional diffraction problem of a broadband electromagnetic impulse on an impedance cylinder located in free space and in the subsurface. The electric thread was a source of external current, excited by an impulse of 1.6 ns duration with a spectrum width from 122 MHz to 726 MHz (at the level of -6 dB). In various combinations, fresh water, thawed and frozen soil, air, and ice were used as the filling medium of the cylinder and the dielectric half-space. The complete system of functions for describing the fields of DS was constructed based on the Hankel functions of the first kind of zero order, the corresponding Green's function for the layered medium problem, and their derivatives in the direction of normal to the curve on which the DS was placed. When compared with the finite difference time domain method (FDTD), it is shown that the MMAS, using Leontovich impedance boundary conditions, can describe impulse fields, scattered by a dielectric cylinder with practically significant accuracy. It has been established that in the case of an elliptical cylinder, the MMAS requires approximately half as many auxiliary DSs compared to the classical MAS while achieving the same accuracy of the solution. In general, this article confirms the possibility of using a complete system of functions to describe the fields of DSs, localized on an open curve for the solving of impulse diffraction problems on subsurface impedance cylinders.
TRIBOMONITORING OF THE COMPRESSOR BEARING OF A GAS TURBINE UNIT
Authors: Shalygin Mikhail , Evtuh Elena , Yevtukh Grigory
Published: October 2024

A gas turbine unit is an object of increased danger, therefore, timely forecasting of repair and replacement of its components is an urgent task. The paper presents the main provisions of tribomonitoring concept of sliding bearings of gas turbine superchargers in order to predict their wear. Fluctuations in gas turbine units are considered from the point of view of vibration appearing in the bearing. A correlation graph of the wear curve and vertical vibrations is presented, showing the relationship between the inclination angles of the run-in curve and vertical vibration. A method to determine the maximum permissible wear of the bearing liner is proposed, based on the analysis of the experimental Abbott-Firestone curves before and after the wear. It is shown that it is sufficient to obtain a single typical Abbott-Firestone curve after wear for bearings of the same manufacturer and of one series. A technique to find out the relationship of wear particles in the lubricant flow obtained from sensors by the granulometric method and the wear limit value of the bearing liner according to the Abbott-Firestone curve is presented. It is shown that in order to find out the relationship between vibration and wear in practice, it is necessary to construct a combined vibration graph and obtain a point of wear value at the moment of maximum permissible vibration.
EVALUATION OF THE WEAR RESISTANCE OF A RADIAL BEARING HAVING A POLYMER COATING ON THE SURFACE OF THE SHAFT WITH AXIAL GROOVE
Authors: Bolgova Ekaterina , Mukutadze Murman
Published: October 2024

The results of this study make it possible to improve understanding of viscous lubricant movement in radial sliding bearings with a polymer coating and a groove on the shaft surface. The studies show that the available grooves on the shaft surface affect the pressure distribution and lubricant viscosity, which, in its turn, influence the tribotechnical parameters of the bearing. The introduction of grooves can help improve the lubrication characteristics of the bearing with a higher effective distribution of lubricant over the machining gap.
Study method: to describe the movement of a lubricant, a model was used that includes the continuity equation and studies the change in viscosity from pressure. The calculations and experiments carried out confirm the adequacy of the proposed model, which indicates the possibility of its practical application for engineering analysis and design. The data obtained show that the available grooves have a successful effect-this increases the load-carrying capacity of the bearing and decreases the friction factor and removes wear on the contact surfaces.
The novelty of the work: This technique includes an integrated approach to modeling the interaction of surfaces, taking into account both the geometric features of the groove and the properties of the polymer coatings used. An important aspect of the work novelty is not only the development of a mathematical model, but also its validation based on expert data.
Conclusion: The analysis of wear resistance confirms that the combination of a fluoroplastic coating and a groove on the shaft surface allows for a more uniform load distribution. This prevents local overloads and excessive heating, leading to early bearing failure. Having grooves with 4 mm width on the shaft surface can also lead to better lubricant circulation.
THE EFFECT OF THE WEAR FACTOR ON THE CHARACTERISTICS OF PLATE-TYPE SHOCK-ABSORBING DEVICES OF RAILWAY ROLLING STOCK
Authors: Boldyrev Aleksey , Gurov Aleksandr , Zhirov Pavel , Kravcov Sergey , Privalov Aleksandr
Published: October 2024

The analysis of existing friction absorbing devices of automatic coupling is performed. It has been found out that in all existing friction absorbing devices, the wear factor should play a significant role. The consequences that can result from the wear of the parts of the wedge system of the friction absorbing devices are analyzed. Experimental studies have been conducted to assess the wear of wedge system parts from the introduced power. Experimental dynamic studies are conducted at BSTU-BSZ slide stand. Plate absorbing devices of various manufacturers are selected as the objects of research. The paper provides a detailed description of the experimental studies carried out and the results obtained in the form of tables and dependencies of the wear level on the amount of power introduced. The dependence of wear on the operating time of the absorbing device has been found out. It is noted that during shunting operations on shunting humps, the service life (degree of wear of friction assembly parts) of plate absorbing devices does not significantly affect their characteristics. It is found out that for all types of transient modes of train movement (starting, braking), as the service life (degree of wear of the friction assembly nodes) of the plate absorbing device increases, an increase in the level of longitudinal compressive forces is observed. This increase is especially noticeable on short and medium trains during emergency braking. The maximum increase of the force level can reach 29%.
IMPROVEMENT OF THE DIRECT METHOD TO DETERMINE STRESS INTENSITY FACTORS OF FOR WHEEL PAIR AXES
Authors: Boldyrev Aleksey , Zhirov Pavel , Kravcov Sergey , Lozbinev Fedor
Published: October 2024

A direct method for determining the stress intensity factor for wheel pair axes is improved based on the introduction of criteria for evaluating the quality of the finite element grid. The theoretical position is used that the stress intensity factor completely determines the stress state level at points located near the crack tip. Using the finite element method, pictures of the stress-strain state of wheel pair axes with cracks and stress intensity factors calculated through stresses near the crack tip are obtained. It is shown that the stress intensity factor values are the same in the local zone. Sections of stable intensity factor values are obtained on the graphs, which means that the grid of finite elements is sufficiently accurate. The improved method has been tested on wheel pair axes.
THE EFFECT OF EXTERNAL AND INTERNAL PRESSURE ON THE STIFFNESS OF BOILER SHELLS OF THE TANK CAR
Authors: Grigor'ev Pavel , Korzhin Sergey , Ibodulloev Sherzod
Published: October 2024

The paper studies the influence of external and internal overpressure on the stiffness characteristics of boiler shells of tank cars, which play a key role in the car design, ensuring the safety of freights such as oil, oil products, bulk cargoes, gas and chemicals. The research is aimed at developing a scientific approach to assess the effect of various pressures on the frequency characteristics of shells and their stability, which is critically important to ensure their reliability and safety. Mathematical expressions are developed to determine the frequency of natural oscillations and the critical pressure at which the stability of the boiler shell is lost. The numerical analysis performed using the finite element method confirms the adequacy and accuracy of the proposed models. The results of the study show that a decrease in internal pressure leads to a decrease in the stiffness of the shell and, accordingly, the frequencies of natural oscillations, which can cause a transition to an unstable state. At the same time, an increase in internal pressure contributes to an increase in stiffness and oscillation frequencies. These conclusions are of great importance for the design and operation of tank cars, as they allow to take into account potential risks and develop safer and more effective design solutions. The data obtained can contribute to improving the safety of cargo transportation, including dangerous freights.
IMPLEMENTASI KEBIJAKAN PERATURAN BUPATI NOMOR 79 TAHUN 2018 TENTANG PENGELOLAAN BADAN USAHA MILIK DESA
Authors: Aisy Dalia Syareatul , Purnamasari Irma , Apriliani Afmi , Seran Gotfridus Goris , Pratidina Ginung , Maruapey Muhammad Husein , Sudarsa Agus Suarman , Mulyono Imam Edy
Published: October 2024

Implementasi kebijakan Badan Usaha Milik Desa (BUMDes) adalah proses pelaksanaan dan penerapan aturan dan pedoman yang telah ditetapkan oleh pemerintah untuk mendirikan dan mengelola usaha di tingkat desa. Penelitian ini bertujuan Untuk mengetahui bagaimana Implementasi Kebijakan Peraturan Bupati Kabupaten Bogor Nomor 79 Tahun 2018 dalam Pengelolaan Badan Usaha Milik Desa (BUMDes), Untuk mengidentifikasi kendala yang dihadapi mengetahui hambatan apa saja yang dihadapi dalam untuk mengidentifikasi kendala yang dihadapi dalam pengelolaan BUMDes serta mengetahui langkah-langkah yang diambil untuk mencapai kebijakan di Kecamatan Cigombong, Kabupaten Bogor, penelitian ini menggunakan metode kuantitatif dengan pendekatan deskriptif. Data dikumpulkan melalui observasi sebagai teknik utama, serta wawancara, kuesioner, dokumentasi, dan studi pustaka sebagai data sekunder. Analisis data dilakukan dengan menggunakan skala Likert dan rumus Weighted Mean Score (WMS). Temuan penelitian menunjukkan rata-rata nilai sebesar 3,68, yang berada dalam kategori baik. Meskipun aspek-aspek seperti komunikasi, sumberdaya, disposisi, dan struktur birokrasi telah terlaksana dengan baik, masih diperlukan perhatian lebih lanjut. Namun masih diperlukan peningkatan dalam aspek komunikasi dan sumber daya untuk memaksimalkan implementasi kebijakan. Upaya yang diperlukan meliputi pelatihan untuk pengelola, penguatan komunikasi antara pemerintah desa dan masyarakat, peningkatan sumber daya manusia, serta perbaikan struktur birokrasi untuk mendukung operasional BUMDes.
PENGEMBANGAN SATUAN ARHANUD DALAM RANGKA PERTAHANAN UDARA NASIONAL DI ERA PERANG MODERN
Authors: Roza Hendra , Kustiawan Bambang , Handoko Tri
Published: October 2024

Dinamika perang saat ini, yang semakin dipengaruhi oleh kemajuan teknologi semangkin pesat, menuntut adaptasi dan inovasi dalam strategi pertahanan dan keamanan suatu negara yang berdaulat. Berkaca kepada perang Rusia-Ukraina, melengkapi masing-masing Rai Arhanud di setiap Batalyon maupun Sat Rudal menjadi sangat strategis serta sangat diperlukan. Tetapi saat ini, Arhanud TNI AD belum memiliki satuan anti drone yang secara spesifik menangani ancaman serangan musuh yang tersebar di seluruh Kotama. Hal ini dapat mempengaruhi kemampuan pertahanan kita dihadapkan pada perkembangan senjata perang modern. Penelitian bertujuan untuk dapat menganalisis integrasi teknologi anti drone ke dalam struktur dan doktrin operasionalnya untuk meningkatkan efektivitas dan efisiensi operasi pertahanan udara di satuan Arhanud TNI AD. Metode penelitian menggunakan metode deskriptif dengan pendekatan kualitatif melalui jumlah sampel mengacu pada analisa pimpinan TNI AD. Hasil penelitian menunjukan bahwa Personel atau SDM Satuan Arhanud TNI AD umumnya sudah memiliki kemampuan yang memadai dalam menjalankan tugas pokok pertahanan udara. Diperlukan penyesuaian yang menyeluruh, baik dari segi operasional maupun taktis, untuk mengintegrasikan teknologi anti-drone ke dalam satuan Arhanud. Satuan Arhanud telah memiliki kesiapan yang baik dalam menghadapi ancaman konvensional, hingga saat ini mereka masih belum dilengkapi dengan satuan khusus anti-drone yang dirancang secara spesifik untuk mendeteksi, melacak, dan menetralisir serangan drone musuh. Perlunya dorongan dan prioritas yang lebih besar untuk mengembangkan teknologi anti-drone guna menghadapi ancaman udara yang semakin kompleks.
THE USE OF DANCE IN THE DEVELOPMENT OF SCHOOLCHILDREN’S AESTHETIC TASTE IN OUT-OF-SCHOOL EDUCATIONAL INSTITUTIONS: CREATIVE POSSIBILITIES OF CHOREOGRAPHIC ART
Authors: Wei Dongmei
Published: October 2024

Choreographic art is an essential means of the comprehensive development of a child. Choreography classes contribute to the aesthetic education of children, positively affect their physical development, and contribute to the growth of their general culture, so choreographic art has a rich opportunity for the comprehensive implementation of educational tasks. However, the analysis of their own practical experience and observations at choreography lessons in out-of-school educational institutions revealed that students are primarily interested in modern dance styles among various dance types. In this regard, there is a problem of forming the schoolchildren's aesthetic taste by dance. The article examines the creative possibilities of choreographic art for forming aesthetic taste in schoolchildren in out-of-school educational institutions. Dance training will be more productive if children are encouraged to engage in holistic choreographic activities, during which schoolchildren will be more motivated to learn the elements of classical, folk, ballroom, and modern dance. To implement this condition, we propose to organize and hold dance festivals between students of specific age categories. This form of work will increase children's interest in choreography lessons. In addition, this form of work will stimulate children to more productive work, which will contribute to the improvement and aesthetic saturation of their movements, the accumulation of artistic and dance impressions, the comprehension of their choreographic capabilities, and the development of children's creativity.
Preserved eolian bedforms control reservoir heterogeneity: characterization and modeling workflow for the Avilé Member, Neuquén Basin, Argentina
Authors: Arguello Scotti Agustin , Mortaloni Matias , Martino Luis , Veiga Gonzalo , Perez Mayoral Joaquin
Published: October 2024

Under certain conditions, most commonly abrupt flooding events, entire eolian bedforms can be incorporated into the geological record. Sediment that was essentially ‘in transport’ within these bedforms at the time of preservation has a distinct sedimentary architecture compared to that of sensu stricto accumulated intervals. Despite this, while the preservation of bedforms has been readily documented from outcrop and subsurface eolian successions, stratigraphic intervals corresponding to these bedforms have rarely been identified and separated from accumulated intervals. The impact of capturing and representing bedform intervals in reservoir models has therefore not been explored. The Avilé Member (Neuquén Basin, Argentina) is a prolific oil reservoir of eolian origin in which both bedforms and accumulated intervals are documented. The aim of this study is to use the Avilé Member record at the Puesto Hernández oilfield to develop a workflow to identify, characterize, map and model discrete eolian bedform and accumulated intervals in a subsurface scenario. Characterization of the unit’s geometry, sedimentary facies, and petrophysics was carried out from seismic, wireline log and core analysis. The development of a conceptual model of the accumulation system and its evolution allowed the identification of bedform and accumulated intervals. Precise mapping of these intervals required the development of a geometrical method, based on correlating interdune lows and using a datum surface to provide for an approximation to the ancient accumulation surface. A zoning scheme conditioned by the intervals was tested against a simple, ‘one-zone’ model, to determine its effectivity in separating discrete heterogeneity zones. The model was also tested in a dynamic simulator to history match the field production and analyze its impact in dynamic reservoir simulation. This example serves as a valuable reference to illustrate how eolian bedforms and accumulated intervals may be identified, characterized, and modelled in subsurface scenarios around the world.
SWMManywhere: A Global-scale Workflow for Generation and Sensitivity Analysis of Synthetic Urban Drainage Models
Authors: Dobson Barnaby , Jovanovic Tijana , Alonso-Álvarez Diego , Chegini Taher
Published: October 2024

Continual improvements in publicly available global geospatial datasets provide an opportunity for deriving urban drainage networks and simulation models of these networks (UDMs) worldwide. We present SWMManywhere, which leverages such datasets for generating synthetic UDMs and creating a Storm Water Management Model for any urban area globally. SWMManywhere’s highly modular and parameterised approach enables significant customisation to explore hydraulicly feasible network configurations. Key novelties of our workflow are in network topology derivation that accounts for combined effects of impervious area and pipe slope. We assess SWMManywhere by comparing pluvial flooding, drainage network outflows, and design with known networks. The results demonstrate high quality simulations are achievable with a synthetic approach even for large networks. Our extensive sensitivity analysis shows that the locations of manholes, outfalls, and underlying street network are the most sensitive parameters. We find widespread sensitivity across all parameters without clearly defined values that they should take, thus, recommending an uncertainty driven approach to synthetic drainage network modelling. This study showcases significant potential of SWMManywhere for research and industry applications to provide drainage network models in urban areas where traditional approaches are impractical.
Unlocking DAS amplitude information through coherency coupling quantification
Authors: Hudson Thomas , Stork Anna , Muir Jack , Fichtner Andreas
Published: October 2024

Distributed Acoustic Sensing (DAS) allows one to measure strain at metre-resolution along a fibreoptic cable, increasing spatial sampling of a seismic wavefield compared to conventional instrumenta- tion. However, the challenge of measuring DAS-derived strain amplitude currently limits applications of this technology. Absolute amplitude measurements are required for estimating earthquake magnitudes, moment tensor inversion and attenuation tomography, for example. Central to this challenge is quantifying how well the fibre is coupled to the subsurface. Here, we present a method using coherency to pragmatically estimate coupling of fibre to the medium. We first introduce a theoretical justification relating coherency to relative coupling between channels and calibrating this to obtain absolute coupling coe icients, before evidencing the performance of the method using various examples from glaciers to downhole geothermal deployments. We apply the method to estimate earthquake magnitudes, comparing values to independent geophone esti- mates. The results allow us to explore whether quantifying coupling is possible or indeed necessary to account for in certain instances. We find that although coupling of fibre to the medium is important, results suggest that practically in many cases, it may be appropriate to simply make the binary first-order assumption that fibre is either approximately perfectly coupled or too poorly coupled for any amplitude analysis. While our findings do not comprehensively solve the fibre-optic coupling problem, the theory and results provide a practical foundation with which to start using DAS-derived amplitude information in earnest.
Resting-state EEG temporal correlations relate to the prioritization of internal preference over past external rewards in free choice
Authors: Zhu Jianhong , Hashimoto Junya , Honda Tatsuru , Yamamoto Kazuki , Anno Mayo , Northoff Georg , Nakao Takashi
Published: October 2024

In a free-choice situation, it is unclear what distinguishes individuals who base their decisions on extrinsically learned values shaped by past reinforcement from those who prioritize intrinsically learned values rooted in personal preferences. This study examined the relationship between these individual differences and long-range temporal correlation (LRTC) using resting-state electroencephalography (EEG). Externally learned values are acquired through externally guided decision making (EDM), in which feedback confirms decision accuracy, whereas intrinsically learned values are acquired through internally guided decision making (IDM), based solely on personal preferences without feedback. The participants learned the value of the four stimuli in an EDM task, and subsequently performed an IDM task with these learned stimuli and 11 new stimuli. Resting-state EEG signals were recorded before and after both the tasks. The results indicated that individuals with a higher alpha-range LRTC prioritize intrinsically learned values over externally learned values in the IDM. These findings were discussed in relation to individual differences in alpha wave-gating function and self-specificity of intrinsic brain activity contribute to the prioritization of self-related preferences in free choice.
Exploring protective influences for associations of neighborhood adversity with psychopathology and cognitive outcomes
Authors: Vargas Teresa , McLaughlin Katie A , Rakesh Divyangana
Published: October 2024

ObjectiveNeighborhood adversity predicts mental health and cognitive outcomes, but little is known about structural factors that may buffer these links. The current study addresses this gap by assessing the role of protective factors in the association of neighborhood deprivation, threat, and segregation with psychopathology symptoms and cognitive outcomes. MethodLinear mixed models were run in the ABCD sample of 11,868 participants to test associations of neighborhood Area Deprivation Index (ADI; deprivation), crime (threat), and dissimilarity and interaction index (segregation) with attention difficulties, internalizing and externalizing symptoms, psychotic-like experiences (PLEs), and fluid and crystallized cognitive performance. School environment, neighborhood education child opportunity index, neighborhood cohesion, and access to green space were tested as moderators of the association of neighborhood adversity with outcomes. ResultsHigher access/quality of educational resources buffer the association of neighborhood deprivation with crystallized cognitive performance. Supportive school environments were associated with lower externalizing symptoms, particularly for youth in low threat contexts. Further, for racial/ethnic minority youth living in low-segregation neighborhoods, higher neighborhood access/quality of educational resources related to lower internalizing symptoms.ConclusionWhile adverse neighborhood environments are associated with higher psychopathology symptoms and lower cognitive performance, some aspects of neighborhoods may buffer this association. Understanding these patterns is necessary for informing structural interventions that might reduce disparities in mental health and cognitive function.