bluuebunny/crossref_metadata_2025 huggingface dataset:
Reliability increase of resonance induction heating units during the fault conditions
Authors: Kalynichenko Denys
Published: May 2023

Purpose. To develop an automatic protection system against fault operation conditions for the resonant inverter of the induction heating unit due to absence of load.
Methodology. Resonant inverter load transfer function analysis using the first harmonic approximation, calculation of control parameters using numerical methods, computer simulation of induction heating unit. Experimental studies based on a smelter with microprocessor control in order to check the adequacy of the proposed model and protection system.
Findings. A computer model of the induction heating unit is presented, the adequacy of which was verified by the experimental results of the induction melting unit. By using this model, circuit protection circuit of the resonant inverter against low load conditions is developed, which is based on the shift of the inverter operating frequency due to the introduction of an additional shift of the phase difference between current and voltage in the feedback loop. The methodology for calculating this phase shift was created using the load transfer function of the inverter (‘capacitor bank-inductor-part’ system) and numerical methods for solving equations. The above calculation method can be used for resonant inverters of any configuration and topology. According to the computer simulation of the induction heating unit operation during fault, the developed system limits the voltage amplitude within the safe operating region of the inverter reactive elements, while in normal operating conditions the protection system does not affect the operation of the unit. The protection system successfully keeps the amplitude of current and voltage in the oscillating circuit within safe limits during low loads. The created system is simple enough for its quick implementation in existing digitally controlled units and has high speed.
Originality.  Methodology to create voltage limiting system for resonant inverters of any configuration with frequency control has been developed.
Practical value. Developed protection system allows to reduce induction heating process interruption by the user. Moreover, protection system increases fault tolerance of induction heating units. Structure of proposed protection system simplifies the modernization of existing units and the development of new models using such system.
Entorno experimental big data integrando devops en el ciclo de entrega de software
Authors: Angulo-Angulo Charlie
Published: May 2023

Sin duda las generaciones de grandes volúmenes de datos de diferentes fuentes han permitido a las organizaciones obtener valor y conocimiento a partir de los datos generados. Por ello, las empresas necesitan a especialistas que sean capaces de digerir esos datos y convertirlos en información útil. Un tema importante es la manera en que los estudiantes pueden adoptar el conocimiento teórico de manera práctica en entornos big data, tecnologías en la nube y herramientas demandadas en el mercado evitando configuraciones extensas.

En este artículo se crea un entorno experimental de big data, describiendo el concepto como tal, sus arquitecturas de referencia y componentes, diseñando e implementando una arquitectura para un clúster de procesamiento de datos distribuido, integrando Devops en un flujo de entrega continua de software; mediante un despliegue automatizado big data procesing de infraestructura como código en la nube.
Collision Avoidance System for Vehicles Using Microcontroller
Authors: Karmakar Malay
Published: May 2023

In the past, man took days to travel from one place to another. As the years gone by man became more innovative, the discovery of wheel is the simple example. With this wheel he began to travel faster. If we look into modern days we will come to know that as the number of working persons are increasing day by day the number of vehicles are increasing in the same fashion. The number of accidents is occurring because of negligence and avoidance. Thus we have designed the system in such a fashion which will help us in overcoming those shorts of problem. Here we are making use of a transmitter which is a transduction element which emits pulses at a frequency of 40 kHz which is being sensed by the receiver and finally given to the microcontroller which will take the appropriate decision depending upon the obstacle. If the obstacle will approach from left side then it will inform the person to take right and if it is coming from right then it will tell the person to take left side. In this way we can avoid the number of accidents by giving appropriate information to the person sitting inside the vehicle.
Uma interpretação da economia brasileira a partir da taxa de lucro: 1950-2020
Authors: MARQUETTI ADALMIR , MALDONADO FILHO EDUARDO , MIEBACH ALESSANDRO , MORRONE HENRIQUE
Published: May 2023

Resumo O artigo apresenta uma interpretação para a economia brasileira entre 1950 e 2020. O elevado crescimento no desenvolvimentismo, 1950-1980, e a grande estagnação no neoliberalismo, 1980-2020, são analisados a partir da taxa de lucro e seus componentes: a parcela dos lucros, a produtividade do capital e o nível de utilização da capacidade instalada. A queda da taxa lucro devido ao declínio da produtividade do capital resultou na redução da taxa de acumulação de capital e do crescimento econômico. No período 1980-2020 houve quebra estrutural na relação entre investimento produtivo e lucro com a adoção do neoliberalismo. A mesma taxa lucro resultava em menor acumulação de capital. A grande estagnação é explicada pela queda da lucratividade a adoção do neoliberalismo.
The theory of inertial inflation: a brief history
Authors: BRESSER-PEREIRA LUIZ CARLOS
Published: May 2023

ABSTRACT This paper is the history of how the theory of inertial inflation was developed in Brazil in the early 1980s, when inflation was very high, much higher than the stagflation that happened in the United States in the previous decade. Perhaps this fact explains why the theory was formulated in Brazil and not in the United States. The main papers and the book that defined the new theory are duly referred. And the author, that in the 1980s and 1990s was a political actor, also tells the history of the application of the theory, the failures and successes.
Itineraries of reconstruction of the bodies of women attacked with chemical agents in Bogotá, Colombia
Authors: Cian Laura Franco , Rivera-Largacha Silvia
Published: May 2023

Abstract This article explores experiences of care-seeking for the physical, social and psychological reconstruction of women attacked with chemical agents in the city of Bogotá, Colombia. Based on an ethnographic design, observational and discursive information was collected in formal and nonformal therapeutic settings, and in-depth interviews were conducted with survivors and health professionals. The data was analyzed from a narrative-critical approach. The findings show divergent interpretations within health care systems on what constitutes the reconstruction of a body attacked with chemical agents in a context marked by profound inequalities in access to health.
Rede de Atenção Psicossocial: desenvolvimento e validação de um instrumento multidimensional para avaliação da implantação (IMAI-RAPS)
Authors: Coelho Vivian Andrade Araujo , Pauferro Ana Luiza Moreira , Silva Mariana Arantes e , Guimarães Denise Alves , Gama Carlos Alberto Pegolo da , Modena Celina Maria , Guimarães Eliete Albano de Azevedo
Published: May 2023

Resumo Trata-se de um estudo metodológico para desenvolvimento e validação do Instrumento Multidimensional para Avaliação da Implantação da RAPS (IMAI-RAPS) em Minas Gerais (MG)/Brasil. O estudo foi executado em três etapas: estudo de avaliabilidade, desenvolvimento do IMAI-RAPS, aplicação da Técnica Delphi para validação de conteúdo e aparência das questões. Foram realizados a análise de documentos oficiais, revisão da literatura e um engajamento estruturado com membros do programa para esclarecer sua operacionalização e focalizar os aspectos centrais a serem avaliados. Um modelo teórico-lógico da RAPS foi construído de acordo com a tríade donabediana: estrutura, processo e resultado e organizado em: Unidades Mínimas (Assistência à Saúde Mental e Reabilitação Psicossocial), Conectividade (Articulação da Rede), Integração (Governança e Gestão do Cuidado), Normatividade (Política de Saúde Mental e Participação e Controle Social), Subjetividade e Estrutura (Serviços, Sistema Logístico e Educação em Saúde). Desse modelo derivou-se o IMAI-RAPS que foi validado por 44 experts da área indicando a abordagem de questões relevantes, úteis e viáveis para avaliação da estrutura e processo de implantação do programa em MG. A utilização da Técnica Delphi possibilitou que os produtos desenvolvidos fossem balizados por estudiosos ou profissionais da RAPS de diversas regiões do país aumentando o poder analítico da ferramenta.
A regulação do acesso à atenção especializada pela Atenção Primária à Saúde da cidade do Rio de Janeiro: coordenação ou competição?
Authors: Gomes Gustavo Graça , Melo Eduardo Alves
Published: May 2023

Resumo Há estudos que sugerem necessidade de maior participação da atenção primária à saúde (APS) na regulação assistencial. Na última década, o município do Rio de Janeiro descentralizou a regulação ambulatorial, conferindo maior protagonismo a médicos da APS no processo regulatório. Este estudo, realizado entre 2019 e 2020, analisou o processo local de regulação do acesso à atenção especializada na APS desta cidade, a partir de entrevistas com profissionais e gestores e análise documental. Os resultados foram organizados nas categorias “atores da APS na regulação: papéis, interações e ferramentas”, “a regulação na APS ampliando a capacidade de coordenação do cuidado” e “a prática da regulação ambulatorial sob domínio da urgência”. Identificaram-se vantagens comparativas do arranjo descentralizado para a interação entre solicitante e regulador, ampliação parcial da capacidade de coordenação do cuidado, competição por vagas e iniquidades de acesso, além de frágil interface entre APS e atenção especializada. A descentralização da regulação é promissora, porém requer atenção ao processo de trabalho na APS e sinergia com os processos regulatórios centralizados, tendo a rede regionalizada como pano de fundo.
Satisfação dos usuários com a qualidade da Atenção Primária à Saúde no estado da Paraíba: estudo transversal
Authors: Monteiro Debora Lana Alves , Padilha Wilton Wilney Nascimento
Published: May 2023

Resumo Objetivo Visa analisar a satisfação dos usuários em relação aos atributos essenciais da Atenção Primária à Saúde, no Estado da Paraíba, a partir de dados secundários do PMAQ- AB. Método Estudo transversal realizado entre 2020 e 2021, com dados de 5.347 usuários vinculados a 1.363 equipes de saúde na APS do Estado. Foram selecionadas questões do material utilizado na Avaliação Externa no 3º ciclo do PMAQ-AB referentes ao perfil demográfico, condição socioeconômica e instrumento elaborado pelos pesquisadores com 42 variáveis. As respostas dos usuários foram categorizadas por equipe de saúde: “Muito Bom” (valor 4), “Bom” (valor 3), “Regular” (valor 2), “Ruim” (valor 1) e “Muito Ruim” (valor 0). Os dados foram tabulados por meio de frequência, porcentagens simples e analisados sob forma de tabelas no Excel 2010. Resultado A classificação “Muito Bom” foi de 10.751 (52,5%) em Acesso de Primeiro Contato, 9757 (55,1%) em Longitudinalidade, 1.315 (48,2%) em Coordenação da Atenção; com menor, proporção 4.146 (25,3%) em Integralidade no Estado da Paraíba. Conclusão O estudo demonstrou classificação geral positiva com a satisfação dos usuários e a presença dos atributos, nas Macrorregiões e Estado. Todavia, verificou-se baixo desempenho no atributo Integralidade e piores avaliações atribuídas à Macrorregião I.
For an HIV Decolonization and intersectionalization of AIDS responses
Authors: Cazeiro Felipe , Leite Jáder Ferreira , Costa Andrei Junior da
Published: May 2023

Abstract With the advent of AIDS, a discursive journalistic-biomedical-mediatic articulation contributed to accentuate stigmatization on certain populations, implying a colonization of HIV in which the virus would reach some people while others would be free. Through a Critical Discourse Analysis (CDA), a critical literature review was carried out in some academic-legal-media areas from a narrative literature review (NLR). The theoretical, ethical and political references of decolonial studies were used for the present analysis because they understand that coloniality is reproduced in a triple dimension: that of power, knowledge and being. These studies were linked to an intersectional criticism in which multiple forms of discrimination can overlap and be experienced in intersection having the contextualization about what aids represented, in Haiti, as a comparative central axis for analysis. We were interested in thinking about the contribution of these perspectives to launch some provocations to the responses to HIV/AIDS in an attempt to overcome a reductionist view propagated by moral and criminalizing discourses that, by positioning themselves through supposed neutrality, conceal the intersectionality of gender, class, race and sexuality, raising barriers to health promotion and HIV/AIDS prevention policies and strategies.
GOTCHA BOT DETECTION: CONTEXT, TIME AND PLACE MATTERS
Authors: Santini Rose Marie , Salles Débora , Ferreira Fernando , Grael Felipe
Published: May 2023

Bot detection is increasingly relevant considering that automated accounts play a disproportionate role in spreading disinformation, controlling social interactions, influencing social media algorithms and manufacturing public opinion online for different purposes. Definition, description and detection of automated manipulation techniques have proved a challenge as technology quickly advances in reach and sophistication. Considering the high contextual character of social science research, the employment of off-the-shelf detection tools raises questions regarding the applicability of machine learning systems in different cases, times and places. Thus, our purpose is to discuss the role of computational methods focusing on understanding the limitations and potential of machine learning systems to identify bots on social media platforms. To address it, we analyze the performance of Botometer, a widely adopted detection tool, in a specific domain (Amazon Forest Fires) and language (Portuguese) and propose a supervised machine learning classifier, called Gotcha, based on Botometer's framework and trained for this specific dataset. We also question how our classifier behaves and evolves over time and perform tests to evaluate the generalization capabilities of the retrained model. Our results demonstrated that supervised methods do not perform well with datasets that present features on which the system was not directly trained, such as language and topic. Hence, our study shows that a successful computational model does not always guarantee reliable results, applicable to a specific real case. Our findings indicate the need for social scientists to confirm the reliability of different tools created and tested only through the prism of computational studies before applying them to empirical social science research.
Nutritional habits, physical activity, body composition, and stress among operational and administrative military police officers
Authors: Jorge Gabriel de Oliveira , Aguiar Diogo Gerbis , Nascimento Thiago Gomes , Brito Rebeca Lopes da Silva , Alves Paulo Henrique Ferreira , Macedo Francisco Guilherme Lima
Published: May 2023

Military police activity is a dangerous, stressful occupation that poses health risks. Nutritional habits, physical activity, body composition and perceived stress, in addition to being interrelated, influence components of professional performance, such as work motivation, general self-efficacy and absenteeism. The objective was to compare nutritional habits, physical activity, body mass index and perceived stress of military police officers working in operational and administrative services, of both sexes, and to investigate the correlation between these variables. The Mann-Whitney U test was used for the comparative analysis and, for the correlational study, the Pearson correlation coefficient. Perceived stress and physical activity were inversely correlated (r=-0.268; p<0.001). Nutritional habits correlated significantly: with physical activity (r=0.381; p<0.001), directly; and, conversely, body mass index (r=0.256; p<0.001) and perceived stress (r=-0.201; p<0.01). Military police officers from the operational service had significantly higher body mass index (U=3695; p<0.001) and physical activity (U=3776; p<0.001) than their counterparts from the administrative service. Men had significantly higher body mass index (U=1333; p<0.001) and physical activity (U=2205; p<0.01) than women, who had significantly higher stress levels than men (U=1927; p<0.001). The correlations and significant differences observed point to the need to implement personnel and health management policies aimed at improving the lifestyle, body composition and stress of military police officers. Study limitations and future directions are discussed.
LETRAMENTO CIENTÍFICO E SEUS DESDOBRAMENTOS NA LITERATURA NACIONAL E INTERNACIONAL
Authors: Borges Dayse Sampaio Lopes , DaMatta Renato Augusto
Published: May 2023

O Letramento Científico (LC), nos vários domínios de conhecimentos científicos e tecnológicos, tem sido colocado como necessário para formar o cidadão, o qual, quando é letrado cientificamente, faz uso social da ciência, entendendo informações científicas difundidas no cotidiano e as incorporando às próprias necessidades. O objetivo deste trabalho foi congregar conceitos e contribuições do LC; e apresentar indicadores bibliométricos sobre esse fenômeno. Utilizou-se a bibliometria para extrair dados da base Scopus em setembro de 2022, verificando o termo de busca “letramento científico/Scientific Literacy” em artigos publicados no Brasil e no mundo. As principais conclusões indicam que os países considerados desenvolvidos estão ranqueados dentre os dez primeiros lugares, sendo que os EUA lideram com 23,8% das publicações mundiais independentemente do tema; e o Brasil, em 15º lugar, com 1,8% de publicações. Em trabalhos sobre LC, os EUA estão em primeiro lugar, com 32,5%; e o Brasil, em nono, com 3,6%. As áreas que mais publicam sobre LC no mundo e no Brasil são Ciências Sociais e Humanidades. Dos artigos publicados no mundo, 91,2% são de língua inglesa; no Brasil, 51,6% são em português; e 50,0% em inglês. Sugere-se que o LC desperta atual interesse na comunidade científica, pois, em âmbito mundial, as publicações sobre o tema sobem com uma taxa média anual de 13,3%. Neste trabalho, mapearam-se principais autores, instituições, áreas, periódicos e idiomas de publicações sobre LC, mostrando a importância deste para fundamentar pesquisas de diversas áreas, sejam educacionais, sociais, aplicadas à saúde, entre outras.
Soil attributes and growth of Eucalyptus grandis on a slope in the municipality of Itajaí, SC, Brazil
Authors: Ruckowski Liamara Aparecida , Costa Henrique Knüpfer , Silva Rayssa Rodrigues da , Pito Noeli Nantes , Schorn Lauri Amândio , Santos Kristiana Fiorentin dos , Fenilli Tatiele Anete Bergamo
Published: May 2023

O objetivo deste trabalho foi avaliar os parâmetros do solo e as características dendrométricas de um Eucalyptus grandis com 30 meses de idade. plantio em área de encosta no município de Itajaí, Santa Catarina, Brasil. Quatro unidades amostrais foram alocadas aleatoriamente em quatro níveis altitudinais: topo (145 m), 30 m (132 m), 20 m (122 m) e base (105 m). O diâmetro à altura do peito (DAP) e a altura de todas as árvores foram medidos em cada unidade amostral. As amostras de solo foram coletadas para determinar os seguintes parâmetros: argila, matéria orgânica, saturação por bases (V), capacidade de troca catiônica (CTC), pH em água, ácido potencial (H+Al), alumínio (Al), fósforo (P), potássio (K), cálcio (Ca), magnésio (Mg) e sódio (Na).A análise estatística indicou que a posição no relevo influenciou apenas CTC, pH, H+Al, K e Na. As maiores médias de CTC (44,88 cmol c dm 3 ) e H+Al (44,97 cmol c dm 3 ) foram observadas no topo. Em contraste, os maiores valores de pH (4,17), K (41,25 mg kg -1 ) e Na (14,75 mg kg -1 ) foram observados na base. Com relação aos parâmetros dendrométricos, apenas a densidade de indivíduos e o diâmetro à do peito foram influenciados pela posição no relevo. A maior densidade foi encontrada na base (2.250 indivíduos), onde foram observados indivíduos com diâmetros menores.Em contraste, os maiores valores de DAP foram observados na profundidade de 30 m (11,36 cm). Os solos neste estudo eram sensíveis e distróficos. Portanto, pequenas variações não têm relevo condicionam a variabilidade dos atributos do solo e o crescimento de E. grandis aos 30 meses de idade.
AVALIAÇÃO DA SATISFAÇÃO DO ENSINO REMOTO EM CURSOS DE PÓS-GRADUAÇÃO EM SAÚDE: REVISÃO SISTEMÁTICA
Authors: Campos Filho Amadeu Sa de , Reis Mateus Souza , Farias Bruna Loiola Coutinho de , Lima Igor Vinícius Anadias de , Mello Carolina Ribeiro Lins e , Sarinho Silvia Wanick
Published: May 2023

Objetivo: Analisar e identificar na literatura científica a utilização do ensino remoto e sua avaliação em cursos de pós-graduação em saúde. Métodos: Revisão sistemática nas bases de dados Medline, Lilacs, BDEnf, IBECS, BBO e BDENF com os descritores educação a distância, ensino remoto, residência, pós-graduação e saúde entre 2017 a 2021, nos idiomas português, inglês e espanhol. Resultados: A busca inicial identificou 750 resultados. Na fase de análise dos títulos e resumos sobraram 66 estudos. Por fim foram incluídos 19 artigos. Os Estados Unidos lideram com o maior número de publicações acerca do tema. A avaliação dos discentes que estudaram através do ensino remoto é positiva. Conclusão: O ensino remoto foi colocado de forma muito rápida para uma grande quantidade de especialidades no mundo, com isso, mesmo evidenciando-se aspectos positivos nesse tipo de ensino, ficou evidente alguns pontos negativos e que se deve fazer melhorias futuras.
Enhancement of geopolymerisation reactivity and thermal resistance using mixed types of fly ash
Authors: Phavongkham Viengsai , Wattanasiriwech Suthee , Wattanasiriwech Darunee
Published: May 2023

Geopolymers prepared with class C fly ash (FA) often suffer from a flash geopolymerisation rate, making it difficult to work. Class F FA, however, may have low reactivity, so an admixture must be added to solve this problem. This research highlighted the use of mixed class C and class F FA as a precursor for geopolymer preparation to alleviate such problems. Optimisation of the precursor recipe and the solid-to-liquid ratio (S/L) was assessed. The highest compressive strength (30.54 MPa) and a suitable initial (136 min) and final (240 min) setting times were obtained with S/L = 2.00, and 50 : 50 proportions of class C to class F FA. The fire resistance test on a 10 mm thick geopolymer panel at 1000°C for 180 min showed a maximum temperature of ∼570–580°C on the reverse side without catastrophic failure, suggesting it can be applied for use in fire retardation.
Parent-Practitioner Collaboration to Support Sustainable Development in Early Years Education
Authors: Esterhulzen Stef , Uys Martie , Mohosho Nomsa
Published: May 2023

This article stems from a research project in five early childhood development (ECD) centres in South Africa, and focuses on parent-practitioner collaboration for sustainable development in early years education. Using a qualitative approach, we followed a participatory action learning and action research (PALAR) design to answer the main research question: "How can parent-practitioner collaboration support education for sustainable development in the early years?" Participants formed an action learning set (ALS) in which they acted as co-researchers and equal partners to construct their own meanings in order to advocate for social change. Data were collected in the ALS during Cycle 3 of the PALAR process. We relied on transcribed, recorded ALS discussions and photovoice activities to generate data, and used thematic content analysis to collaboratively analyse the data. Our findings disclose that education for sustainable development is possible when parents and practitioners collaborate.
Promoting the Well-Being of Supervisors for Sustainable Early Childhood Development in an Informal Settlement
Authors: Mthiyane Ncamisile P. , Malema Dipolelo , Madonda Nompumelelo
Published: May 2023

Early childhood development (ECD) centres are strategically positioned to create quality early learning opportunities that prepare children for adulthood, providing the necessary holistic sustainable learning. However, many ECD facilities in the informal settlements in South Africa function under a variety of psychosocial and contextual challenges that impact directly on the well-being of supervisors and practitioners. This study explored the need to enable, and the ways to relationally promote, the well-being of supervisors. Underpinned by posthumanism, and consistent with participatory action learning and action research cycles, we recognised that the challenges facing humanity today require new understandings and responsive solutions, which include engagements and contributions with and by nonhuman relationalities for sustainable early childhood learning. In this paper, we argue that focus on the promotion of the well-being of ECD supervisors in informal settlements is crucial. Data generation was conducted with an action team of six participants, that is, three ECD supervisors and three researchers utilising reflective drawings and group meetings that provided opportunities for action and reflection. A critical thematic analysis of data concluded that innovative collaborative ways to solve own problems in own contexts utilising responsive solutions promotes social change. An adaption to the decentralisation of supervisors' power using interdisciplinary interventions makes communities feel responsible, valued, and accountable for the ECD centres-thus, relational interconnections are improved at human and nonhuman levels. This study has the potential to contribute to the well-being of supervisors, which may filter down to improved well-being for teachers and learners, resulting in sustainable ECD in informal settlements.
Early Childhood Educators' Professional Learning for Sustainability Through Action Research in Australian Immersive Nature Play Programmes
Authors: Hughes Fran
Published: May 2023

In this paper, I provide insights into how action research influenced the movement of Australian early childhood educators' worldviews, identities, and their agency in relation to education for sustainability (EfS) in natural outdoor settings. This was integral to a larger study that explored early childhood educators' understandings of a nature-sustainability nexus and its influence on their pedagogies in Australian immersive nature play programmes. The findings indicated personal transformations for some participants as individuals and as teams of early childhood professionals, resulting in new discourses for EfS-with others engaging in an ongoing journey of disrupting dominant anthropocentric ways of thinking.
The legacy of afrophobia and white supremacy in the plight of African migrants in South Africa
Authors: Sekati Phenyo
Published: May 2023

A state of disaster, is, by definition, aimed at addressing widespread natural and/or public health issues faced by society and although the COVID-19 pandemic has instigated a worldwide state of disaster, it cannot be said that the effects thereof have been equally felt throughout the world, particularly within South Africa. Singularly, the plight of African migrants has worsened with many of them facing various human rights violations through increased social marginalisation and political exclusions. The marginalisation of African migrants in particular also brings to attention the different manifestations of Afrophobia and how this has led to the territorial exclusion of African migrants. This article seeks to discuss the parallels between the plight of African migrants in South Africa and the manifested ideologies of Afrophobia and White supremacy and proposes transformative constitutionalism and structural reform as remedies to the prevailing issues faced by African migrants in South Africa.
Production of sodium-based zeolites and a potassium-containing leach liquor by alkaline leaching of South African coal fines ash
Authors: Collins A.C. , Strydom C.A. , Matjie R.H. , Bunt J.R. , van Dyk J.C.
Published: May 2023

South African coal discards derived from feed coal for thermoprocesses pose human health and environmental problems and incur high disposal costs. These issues need to be resolved. Coal fines and a coal fines/ K2CO3 blend were combusted at 700°C in a laboratory rotary kiln to produce ashes containing metakaolinite (Al2O3.2SiO2) and illite/muscovite/orthoclase amorphous materials. The blend ash and coal fines ash, containing 18% K2O and <1% K2O respectively, were leached with water and with 1 M and 8 M NaOH at 80°C for 4 hours using a solid to liquid ratio of 1:5. The 8 M NaOH leach yielded 17% sodalite (Na8Si6Al6O24(OH)2) formation through SiO32-, Al(OH)4_, and Na+ precipitation in the leached ashes. The 1 M NaOH leach yielded no sodalite. X-ray fluorescence analysis of the original ashes and leached ashes showed low Al and Si dissolution efficiencies due to the sodalite formation. Sequential NaOH leaching resulted in the highest potassium dissolution efficiency of 89% for the ashes of fines/K2CO3 blend and 59% for the fines. It may be possible to increase the ash-derived zeolite concentration by using even higher NaOH concentrations (12-20 M NaOH) during leaching. Sodalite derived from coal ash could possibly be utilized for water purification in industrial applications, or as molecule separators. The potassium-containing liquid could be used in fertilizer manufacture.
Forms of actualization of the historical past on posters and in poems of the Great Patriotic War
Authors:   Moscow University for Industry and Finance, Korzhova Inessa N.
Published: May 2023

The article is dedicated to comprehending the variants of actualization of the historical past in poetry and on posters of 1941–1945. Fostering respect for the past became one of the goals of the pre-war years’ propaganda. But art revealed stronger forms of time connection than the mere knowledge of history by contemporaries. The aim of the article is to establish similar types of representation of the past in poetry and poster art. According to Benveniste’s “principle of nonredundancy”, the codes of the arts are mutually untranslatable, so the objectives of the study include establishing the specifics of the forms of actualizing the past in each of arts under study. The simplest type is the spatial (on the poster) or temporal (in poetry) division of history and modernity. Narrative and comparative techniques, each in their own way, speak about the possibility of victory through an appeal to the precedent. On the poster, a multi-frame composition conveys this message. In poetry, composition is a level that is almost not used to express the concepts I am interested in. Retrospection can be introduced in any part of the text and is supported by comparative constructions, semantics of adverbs and pronoun, the special dynamics of verb tense forms. In other types, history is present in modernity. This can happen indirectly through the inclusion in the plane of the present cultural signs of the past: monuments or books. They do not point to real events, but to actual historical ideas and myths. The most effective force is works that implement the metaphor of the past helping in the battles. For this, poster artists created a special two-level composition with a coloristic opposition of the planes and their comparison at the level of poses’ and figures’ identity. The past personifies in the person of the glorified generals and naval commanders, and poetry also recreates the resurrection and participation in modernity of nameless, seemingly unheroic ancestors. The pragmatics of addressing the past in such works was different – they evoked a sense of responsibility to history. The past was also actualized in the concept of the immortal collective body of the people. When implementing this idea, poetry does not abandon the linear development of time, describing the historical path of the people as the centuries-old life of the giant individual. The poster, which focuses on only one point, reveals the soul of ancient warriors in contemporaries. Posters with deformed shadows become the means of embodying this idea. Finally, the past appears in the form of reincarnation of heroes. Formally such works are devoid of a second plane, but it is present in the form of allusions that establish an internal or external similarity of modern heroes with a historical person. This type, like the previous one, speaks of the embodiment of national typical features in contemporaries – the most reliable form of the presence of the past in the present.
Symbolism of clouds in the idiostyle of Sergey Yesenin (linguistics aspect)
Authors:   University of Rzeszów, Kur-Kononowicz Jolanta
Published: May 2023

The aim of the article is to analyze the symbolism of clouds in the idiostyle of Sergey Yesenin. The object of the analysis is the “atmospheric phenomena” symbolism within the semantic field of “nature”. The focus of the research is the specificity of the symbolism of clouds in the linguistic image of the poet’s world. The research methods of semantic analysis and linguistic description are used. The material for the analysis is fragments of poetic texts by Sergey Yesenin. An attempt is made to describe the mechanism of creating a symbolic sense, which is also a metaphorical sense and is based on associative, analogous thinking. The factual material illustrates the role of the semantic phenomenon of the contextual connotation of words (lexemes) in a poetic text. The article shows that the symbolism of clouds in Yesenin reflects certain phenomena, e.g., things (beard, lace), atmospheric phenomena (rain), place (cornfield), physical phenomena (chill), animals (horse), perception of the world (unhappiness, illusion, mystery), people (believers). The attention was paid to the exceptional transparency of the phenomenon of things (honey, smoke, threshold, blade, beard, lace, lake, torn clothing (outfit)), which create the so-called functional metaphor. The conducted analysis will contribute to the enrichment of knowledge on the creation of a model of mechanisms controlling symbolic-metaphorical (figurative) thinking, as well as to further studies on the functioning mechanism of associative (metaphorical) thinking. A possibility of comparative analysis of clouds symbolism in the idiostyles of other Russian or European poets is suggested.
Narrative structure of the gamebook as a hypernarrative
Authors:   University of Tyumen, Morkvina Elena A.
Published: May 2023

The article describes the research of the narrative structure of gamebooks as an example of hypertext fiction. The aim of the research is to analyse the storyline of Raymond Queneau’s gamebook “A Story of Your Own” as a literary hypertext narrative, to define the peculiarities of its structural organization and to come up with a narrative scheme of the gamebook. The methodology of the research is based on the narrative analysis predicated by the invariant narrative scheme offered by William Labov and Joshua Waletzky. The research novelty lies in the fact that for the first time a narrative analysis of a book-game is carried out taking into account its narrative and hypertext characteristics and the hypernarrative structure of a bookgame is described and presented in the form of a scheme. The article dwells on the notions of the narrative, its prototype form and hypertext narrative as being a combination of hypertext and narrative. The author also defines the conception of the hypertext gamebook, follows its evolution. As a result of the analysis of Raymond Queneau’s minimalistic gamebook, the author identifies following isomorphic characteristics of a gamebook: nonlinearity and variation of the plot structure, fragmentarity and interactivity (the dialogue between the author, the reader and the text). The gamebook narrative structure utilizes all the narrative components (Abstract, Orientation, Complicating Action, Evaluation, Resolution, Coda), but there are some deviations from the scheme of the prototype linear narrative such as the combination of all narrative components in one, the substantial repetition of a component, the implementation of a component in a different textone, elimination, the presence of narrative polycomponents and their discontinuity, the implementation of a new component of Evaluation by the reader. All these deviations fulfil their definite functions inherent in the game-book. The gamebook structural abnormities are explained by the hypertext strategy of the narration and by interactivity. They create a new fiction space with numerous textual branches, make it possible to expand and to restrict the framework of the narration, boost the narrative dynamics and encourage readers’ activity. As a result of the research, the gamebook narrative scheme has been devised and described. This scheme includes potential authorial variations and it can be applied as the basis for the analysis of all kinds of hypertext narratives.
Çoklu şarj teknolojisine dayalı kısmi şarj politikalı karma filolu araç rotalama problemi: Matematiksel model ve çözüm kurucu sezgisel
Authors: DÖNMEZ Sercan , KOÇ Çağrı , ALTIPARMAK Fulya
Published: May 2023

Bu çalışmada Çoklu Şarj Teknolojisine Dayalı Kısmi Şarj Politikalı Karma Filolu Elektrikli Araç Rotalama Problemi (KF-E-ARP) ele alınmıştır. Karma filo, elektrikli araçları (EA) ve konvansiyonel araçları (KA) içermektedir. Konvansiyonel araçların emisyon fonksiyonu ve elektrikli araçların şarj tüketim fonksiyonu içerisinde katedilen mesafe ile birlikte araçta taşınan yük miktarı da dikkate alınmıştır. Ayrıca şarj istasyonunda çoklu şarj konfigürasyonlarından birinin seçilmesi, karma filolu problemlerde ilk defa ele alınmıştır. Problem, müşteri dağıtım taleplerini karşılarken toplam maiyeti enazlayan araç rotalarının elde edilmesi olarak tanımlanabilir. KF-E-ARP için öncelikle karma tamsayılı matematiksel model geliştirilmiştir. Problem NP-zor olduğundan dolayı, orta ve büyük boyutlu problemlere makul sürelerde çözüm elde edebilmek amacıyla ekleme tabanlı bir çözüm kurucu sezgisel algoritma önerilmiştir. Deneysel analizlerde, matematiksel model ile 2 saat içerisinde çözüm bulunamayan tüm orta ve büyük boyutlu problemlere önerilen çözüm kurucu sezgisel algoritmalar ile yaklaşık 1 saniye gibi çok kısada sürede uygun çözümler bulunabildiğini gözlemlenmiştir.
Holistic rehabilitation of cochlear implant users: using the International Classification of Functioning, Disability and Health
Authors: Lorens Artur , Mertens Griet , Kurz Anja , Anderson Ilona
Published: May 2023

Background

The purpose of this article is to propose how the International Classification of Functioning, Disability and Health (ICF), particularly the ICF core sets for hearing loss, can be used to plan and evaluate the holistic (re)habilitation of cochlear implant recipients.

Material and methods

The opinions of HearRing experts were gathered on what – based on their clinical experience – are the most relevant ICF categories and codes to describe audiological rehabilitation after cochlear implantation. For each ICF category, the most commonly used audiological assessment tools and methods were identified.

Results

The most relevant codes for Body functions and structures, Activities and Participation as well as Environmental factors were identified. These were the following. Body structures: structure of the inner ear (s260), auditory nerve (s260), brainstem (s1105), midbrain (s1101), diencephalon (s1102), and cortical lobe (s110). Hearing functions: sound detection (b2300), sound discrimination (b2301), localization of sound source (b2302), lateralization of sound (b2303), and speech discrimination (b2304). Activities and participation: listening (d115);
communicating with (receiving) spoken messages (d310); handling stress and other psychological demands (d240); using communication devices and techniques (d360); conversation (d350); family relationships (d760); school education (d820); paid employment (d850); and community life (d910). Environmental factors: sounds (e250), products and technology for communication (e125), immediate family (e310), attitudes of immediate family members (e410), societal attitudes (e460), health professionals (e355), and health services, systems, and policies (e580).

Conclusions

Using the ICF can help target the holistic (re)habilitation of cochlear implant recipients. By providing a common language, it can enable clearer communication across disciplines, and closer comparison between different studies, which is essential for meta-analyses.
Visually supported short-term auditory memory in children with developmental language disorder (DLD)
Authors: Bryłka Martyna , Cygan Hanna
Published: May 2023

Background

Developmental language disorder (DLD) is an impairment that disturbs the ability to acquire and make use of native language. The exact cognitive and neuronal brain underpinnings of the disorder are still a matter of investigation.

Material and methods

The relationship between the audiovisual phonemic short-term memory and particular language abilities was examined among 7–9 year-old children with DLD as well as in a gender, age, and IQ-matched control group. Children were assessed with a standard language battery and the Stanford–Binet scale (SB5). Subsequently, they performed a short-term memory task requiring immediate recall of sequences composed of syllables presented audiovisually.

Results

There were lower levels of audiovisual phonemic memory among children with DLD. They performed significantly worse than matched typically developing (TD) children in the experimental task and their performance was correlated with scores obtained in each
language subtest. In contrast, we did not find between-group differences in visual short-term operational memory measured on the SB5 scale.

Conclusions

The present experiment replicated previous findings about short-term phonemic memory impairment in the DLD population. We found that memory impairment also occurs even if phoneme information is presented simultaneously in the auditory and visual domains.
It appears that non-linguistic spatial cues accompanying phoneme stimuli do not overcome phonemic short-term memory impairment.
paja en el ojo ajeno. Reseña del libro: Volver a las trincheras. Una arqueología de la Guerra Civil española,de Alfredo González Ruibal (2016)
Authors: Botero Páez Sofía
Published: May 2023

Da vértigo. Da vértigo el azar y la cantidad de casualidades que se tienen que dar para conocer un libro, sobre un tema que no se había considerado consultar, que no se había visto ni siquiera de forma accidental y del que no se oye hablar; sucede gracias al amigo de un amigo y a la existencia de una edición digital —que no es seguro que no sea “pirata” —, en plenas fiestas decembrinas cerradas por la pandemia. Da vértigo la precisión de la cronología y la geografía de los hallazgos que se registran en el libro: desde el verano de 1936 hasta 1952, con el cierre de un destacamento penal creado en Madrid para ¿paliar? los efectos de la posguerra. En ese contexto, da vértigo hablar como profesora de arqueología, de una universidad pública en Colombia y surge la primera pregunta: ¿por qué aquí, un libro como este, no aparece mencionado? Más aún, ¿por qué no está en la agenda de las posibilidades, las abstracciones, la crítica o la diletancia que permiten y obligan las clases introductorias? En este caso, la barrera del idioma, todavía tan fuerte, no existe, ni la extrañeza de las distancias que marcan la cultura, el tiempo o el exotismo de los acontecimientos. El hecho de que la Guerra Civil española haya motivado la publicación de 181 novelas, entre 1989 y 2011, ha permitido proponer que se trata de una “moda” y que, por ello, poco aporta a su análisis y comprensión (Becerra, 2015); sin embargo, visto desde aquí, es posible considerar que esto alude al hecho de que esa guerra está presente, en una especie de conciencia social que advierte sobre la atrocidad de los acontecimientos y que ello de muchas formas es importante.
Presentación
Authors: Rojas-Mora Sneider
Published: May 2023

El Boletín de Antropología de la Universidad de Antioquia presenta el número 58 del volumen 34, dedicado a una temática que ha sido fundamental en el desarrollo del Departamento de Antropología de la Universidad de Antioquia: la alimentación y la comida. Es para nosotros muy grato contar con este número y este dossier en particular, debido a que ha sido en nuestra casa de estudios donde se han desarrollado ampliamente las investigaciones de este campo en el país, que luego han sido replicados por otros departamentos de antropología. En este momento, en el que pareciera que los estudios culturales se constituyen en el adalid de las investigaciones propias del campo de la cultura, es de gran importancia para nosotros mantener nuestro espíritu de independencia y coherencia, no sólo en la tradición, sino también con los principios epistémicos de la disciplina misma.
Evaluadores Boletín de Antropología Vol. 34, números 57 y 58
Authors: De Antropología Boletín
Published: May 2023

El Boletín de Antropología agradece a todos y cada uno de los investigadores que participaron en el proceso de lectura.
Índice de artículos publicados en el volumen 35
Authors: Espinal Corrales Manuela
Published: May 2023

Índice de artículos publicados en el volumen 35.
Evaluadores Boletín de Antropología Vol. 35, números 59 y 60
Authors: Espinal Corrales Manuela
Published: May 2023

Evaluadores Boletín de Antropología Vol. 35, números 59 y 60.
La manipulación de la memoria indígena cristiana en imágenes novohispanas del siglo XVI
Authors: Pérez Flores José Luis
Published: May 2023

En las siguientes páginas discutiré la utilización política del pasado indígena durante el siglo xvi novohispano; para ello, acudo a ejemplos de la Conquista y a los conventos de San Miguel Arcángel en Ixmiquilpan y San Nicolás Tolentino, en Actopan, ambos en el actual estado mexicano de Hidalgo. Para este propósito, analizaré la importancia del registro y la recuperación del pasado en las comunidades indígenas tanto prehispánicas como virreinales. Muestro la discusión sobre el valor histórico de las fuentes nativas mediante dos posiciones extremas: la que considera que todo relato de tipo histórico en el fondo es una simbolización de la realidad, y la postura opuesta, que supone que en el fondo de un mito existe un hecho histórico distorsionado. Presento como alternativa la postura intermedia que, según Navarrete (1999), concilia ambas posiciones, al reconocer las conexiones que tienen el mito y la historia en el pensamiento indígena, así como la importancia de los esquemas narrativos para encuadrar los acontecimientos. Para abordar la realidad novohispana, deliberaré brevemente sobre la importancia de incluir como categoría central de análisis el concepto de “cristianismo indígena”, puesto que este permeó los productos culturales del siglo xvi.