bluuebunny/crossref_metadata_2025 huggingface dataset:
Sexual anxiety mediate relationship between sexual schemas and body image with sexual function in Iranian women
Authors: Yousefi Afrashteh Majid , Blouri Rojan , Morovati Zekrollah
Published: July 2024

Background

Sexual function is one of the most critical challenges in human society, especially among women. The problems associated with sexual function are significantly ambiguous in a society like Iran. This study investigated the mediating role of sexual anxiety in relationship between sexual schemas and body image with female sexual function.

Method

The research method was correlational and specifically path analysis. The statistical population included women aged 25–45 in Rasht, Iran, 2021. 365 women were selected using Cochran’s formula and the convenience sampling method. The Female Sexual Function Index (FSFI), Sexual Self-Schema Scale for Women (SSSS), Body Image Scale (BIS), and Multidimensional Sexual Self-Concept Questionnaire (MSQ) were used for data collection. For data analysis, SPSS-26 and LISREL 10.2 software were used.

Results

Descriptive data analysis showed that mean and standard deviation were for further passionate-romantic schema 22.96 and 4.83, open-direct schema 27.64 and 5.09, embarrassed-conservative 20.93 and 4.61, body image 128.96 and 27.35, sexual anxiety 13.13 and 3.91 and sexual function 49.83 and 8.67. According to the results of path analysis, passionate-romantic (β = 0.51), explicit-comfortable (β = 0.27), shy-conservative (β = -0.59), and body image (β = -0.62) schemas showed a significant relationship with sexual function. Sexual function anxiety as a mediating variable also had a significant role (β = -0.41) in female sexual function.

Conclusion

Sexual function anxiety, negative body image, and negative sexual schema negatively affect women’s sexual function, and positive sexual schemas and body image positively affect sexual function anxiety.
Research on cross-regional emergency materials intelligent dispatching model in major natural disasters
Authors: Zhang Lin , Wang Jinyu , Wang Xin , Wang Wei , Tian Xiangliang
Published: July 2024

The increasingly frequent occurrence of major natural disasters can pose a serious threat to national stability and the safety of people’s lives, and cause serious economic losses. How to quickly and accurately dispatch emergency materials to all disaster areas across regions in post-disaster has attracted wide attention from the government and academia. In response to the characteristic of high uncertainty in emergency rescue for major natural disasters, and considering differentiated disaster severity levels in different disaster areas, the entropy weight method is used to determine the urgency coefficient of emergency material demand for disaster areas. This study aims to minimize the emergency materials dispatching time and cost, also maximize the dispatching fairness for disaster areas. The triangular fuzzy number method is used to represent the uncertain variables mentioned above, so that a cross-regional emergency materials intelligent dispatching model in major natural disasters (CREMIDM-MND) is constructed. The extremely heavy rainstorm disaster in Henan Province of China in 2021 is selected as a typical case. Based on objective disaster data obtained from official websites, this study applies the constructed model to real disaster case and calculates the results by MATLAB. The ant colony algorithm is further used to optimize the transportation route based on the calculation results of the emergency material dispatching for disaster areas, and finally forms the intelligent emergency materials dispatching scheme that meets the multiple objectives. The research results indicate that compared to the actual situation, CREMIDM-MND can help decision-maker to develop a cross-regional emergency materials intelligent dispatching scheme in time, thereby effectively improving the government’s emergency rescue performance in major natural disasters. Moreover, some managerial insights related to cross-regional emergency materials dispatching practice problem in major natural disasters are presented.
Does university-industry collaboration improve firm productivity? Evidence from China
Authors: Li Yuanqi , Li Zhuo , Liu Ting
Published: July 2024

China’s high-quality development cannot be achieved without high-quality research. As the university is an indispensable source of advanced research, analyzing the impact of university-industry collaboration (UIC) on firm performance helps us understand the significance of universities for China’s economic development and innovation activities. As existing research does not pay attention to the impact of UIC on the productivity of Chinese firms, we examine the impact of such collaboration on firm productivity using natural language processing and by matching China’s intellectual property and listed firms’ operations databases. The empirical results show that UIC can promote firm productivity by improving the quality of their innovations, strengthening internalization efficiency, and broadening their research horizons. Moreover, the UIC process has a pronounced effect on promoting firm productivity in technology- and intellectual property-intensive industries. From the UIC perspective, we interpret China’s economic development and provide new insights for developing countries regarding using universities to alleviate the insufficiency of private R&D investments.
Hepatic transcript profiling in beef cattle: Effects of feeding endophyte-infected tall fescue seeds
Authors: Alfaro Gastón F. , Palombo Valentino , D’Andrea MariaSilvia , Cao Wenqi , Zhang Yue , Beever Jonathan E. , Muntifering Russell B. , Pacheco Wilmer J. , Rodning Soren P. , Wang Xu , Moisá Sonia J.
Published: July 2024

The objective of our study was to evaluate the effect of endophyte-infected tall fescue (E+) seeds intake on liver tissue transcriptome in growing Angus × Simmental steers and heifers through RNA-seq analysis. Normal weaned calves (~8 months old) received either endophyte-free tall fescue (E-; n = 3) or infected tall fescue (E+; n = 6) seeds for a 30-d period. The diet offered was ad libitum bermudagrass (Cynodon dactylon) hay combined with a nutritional supplement of 1.61 kg (DM basis) of E+ or E- tall fescue seeds, and 1.61 kg (DM basis) of energy/protein supplement pellets for a 30-d period. Dietary E+ tall fescue seeds were included in a rate of 20 μg of ergovaline/kg BW/day. Liver tissue was individually obtained through biopsy at d 30. After preparation and processing of the liver samples for RNA sequencing, we detected that several metabolic pathways were activated (i.e., upregulated) by the consumption of E+ tall fescue. Among them, oxidative phosphorylation, ribosome biogenesis, protein processing in endoplasmic reticulum and apoptosis, suggesting an active mechanism to cope against impairment in normal liver function. Interestingly, hepatic protein synthesis might increase due to E+ consumption. In addition, there was upregulation of “thermogenesis” KEGG pathway, showing a possible increase in energy expenditure in liver tissue due to consumption of E+ diet. Therefore, results from our study expand the current knowledge related to liver metabolism of growing beef cattle under tall fescue toxicosis.
Estimates and determinants of health facility delivery in the Birhan cohort in Ethiopia
Authors: Hunegnaw Bezawit M. , Goddard Frederick G. B. , Bekele Delayehu , Haneuse Sebastien , Pons-Duran Clara , Zeleke Mesfin , Mohammed Yahya , Bekele Chalachew , Chan Grace J.
Published: July 2024

Health facility delivery is one of the critical indicators to monitor progress towards the provision of skilled delivery care and reduction in perinatal mortality. In Ethiopia, utilization of health facilities for skilled delivery care has been increasing but varies greatly by region and among specific socio-demography groups. We aimed to measure the prevalence and determinants of health facility delivery in the Amhara region in Ethiopia. From December 2018 to November 2020, we conducted a longitudinal study from a cohort of 2801 pregnant women and described the location of delivery and the association with determinants. We interviewed a subset of women who delivered in the community and analyzed responses using the three delays model to understand reasons for not using health facility services. A multivariable poisson regression model with robust error variance was used to estimate the presence and magnitude of association between location of delivery and the determinants. Of the 2,482 pregnant women followed through to birth, 73.6% (n = 1,826) gave birth in health facilities, 24.3% (n = 604) gave birth at home and 2.1% (n = 52) delivered on the way to a health facility. Determinants associated with increased likelihood of delivery at a health facility included formal maternal education, shorter travel times to health facilities, primiparity, higher wealth index and having attended at least one ANC visit. Most common reasons mothers gave for not delivering in a health facility were delays in individual/family decision to seek care. The proportion of deliveries occurring in health facilities is increasing but falls below targets. Interventions that focus on the identified social-demographic determinants and delays are warranted.
Deep learning-based material decomposition of iodine and calcium in mobile photon counting detector CT
Authors: Han Kwanhee , Ryu Chang Ho , Lee Chang-Lae , Han Tae Hee
Published: July 2024

Photon-counting detector (PCD)-based computed tomography (CT) offers several advantages over conventional energy-integrating detector-based CT. Among them, the ability to discriminate energy exhibits significant potential for clinical applications because it provides material-specific information. That is, material decomposition (MD) can be achieved through energy discrimination. In this study, deep learning-based material decomposition was performed using live animal data. We propose MD-Unet, which is a deep learning strategy for material decomposition based on an Unet architecture trained with data from three energy bins. To mitigate the data insufficiency, we developed a pretrained model incorporating various simulation data forms and augmentation strategies. Incorporating these approaches into model training results in enhanced precision in material decomposition, thereby enabling the identification of distinct materials at individual pixel locations. The trained network was applied to the acquired animal data to evaluate material decomposition results. Compared with conventional methods, the newly generated MD-Unet demonstrated more accurate material decomposition imaging. Moreover, the network demonstrated an improved material decomposition ability and significantly reduced noise. In addition, they can potentially offer an enhancement level similar to that of a typical contrast agent. This implies that it can acquire images of the same quality with fewer contrast agents administered to patients, thereby demonstrating its significant clinical value.
Measuring social norms related to child marriage among married women and men in Niger
Authors: Sripad Pooja , Pinchoff Jessie , Dadi Chaibou , Dougherty Leanne
Published: July 2024

Background

Child marriage remains prevalent in the Sahel region. Pervasive norms regarding child marriage, and sexual behavior persist. We explored norms from multiple perspectives to strengthen interventions aimed at delaying age at marriage.

Methods

This study analyzed a cross-sectional household survey conducted in Niger in 2022 with women aged 15–49 (n = 2,726) and a subset of their male household members aged 15–59 (n = 1,136). Separate logistic regression models assessed factors associated with three descriptive (e.g., perception of what others do) and injunctive (e.g., perception of a group’s approval or disapproval) normative outcomes related to practices that support marriage as soon as a girl reaches puberty and beliefs related to premarital sex.

Results

Our study found a greater proportion of men described early marriage as protective from the fear of socially induced ruined marital prospects for women (70% vs. 64%), while women expressed its protection from being harassed (62% compared to 42%). The injunctive norm outcome that “my neighbors think that one should marry off one’s daughter as soon as she reaches puberty” was significantly associated with the belief that child marriage was protective for females among women (OR = 4.49; 95% CI 3.13. 5.50) and men (OR = 8.21; 95% CI 5.88, 11.45).

Conclusions

Programs addressing child marriage should consider both male and female perspectives to address differences and foster an environment where communities and families shift norms to delay early marriage.
Non-linear trends using the generalized additive models in physical and technical performances of the Chinese Super League players
Authors: Zhang Wei , Tao Rancheng , Zhou Fei , Zhou Changjing , Gong Bo
Published: July 2024

This study aimed to investigate the non-linear evolution of position-specific physical and technical performance indicators across different tactical formations in the Chinese Super League (CSL) from the 2015 to the 2021 seasons. Match data were collected from 800 games played in six common formations (3-5-2, 4-3-3, 4-2-3-1, 4-4-2, 3-4-3, and 4-1-4-1). Players were classified into five positions: central defenders (CD; match observations = 2,219), fullbacks (FB; match observations = 2,060), central midfielders (CM; match observations = 2,786), wide midfielders (WM; match observations = 1,587), and forwards (FW; match observations = 1,680). Generalized additive models (GAMs) were constructed to analyze the nonlinear evolution trends in position-specific physical and technical performance across seasons and formations. The results showed that the total distance covered by CDs in the 3-5-2 formation showed a non-linear upward trend from the 2015 to 2021 seasons (R2 = 0.3, p = 0.006); FBs in the 3-4-3, 4-1-4-1, and 3-5-2 formations exhibited non-linear upward trends in number of sprints and sprint distance from the 2015 to 2021 seasons (R2 = 0.189–0.448; P < 0.03, respectively); the high-speed running of FWs in the 4-2-3-1 formation displayed a non-linear decline trend from the 2015 to 2021 seasons (R2 = 0.477; P < 0.001); CMs in the 4-2-3-1 formation demonstrated a non-linear increasing trend in the ball retention percentage (R2 = 0.369; p = 0.001); WMs in the 4-4-2 formation showed a non-linear decreasing trend in ball retention percentage and passes from the 2015 to 2021 seasons (R2 = 0.259–0.29; P = 0.006, respectively). These findings revealed non-linear evolutionary trends in physical and technical performances across positions and formations, providing an in-depth understanding of the changing match demands placed on players during matches. This enables the optimization of training and tactics by developing targeted strategies tailored to meet the specific requirements of different formations and playing positions.
First-line antiretroviral therapy initiation for newly diagnosed people with HIV in the Netherlands: A retrospective analysis from 2016 to 2020
Authors: Oosterhof Piter , Wit Ferdinand W. N. M. , van Luin Matthijs , van der Valk Marc , Brinkman Kees , Burger David M.
Published: July 2024

Introduction

HIV treating physicians in the Netherlands follow the guidelines of the Department of Health and Human Services (DHHS). Most of these recommended initial regimens are single-tablet regimens (STRs), which incur higher costs. By the end of 2017, generic NRTI backbones had become widely available, offering a potentially cheaper multi-tablet regimen. This study aimed to evaluate guideline compliance in people with HIV who started antiretroviral therapy (ART), the uptake of generic multi-tablet regimens (gMTRs), and associated medication costs.

Methods

This retrospective cohort study used data from the Dutch HIV Monitoring Foundation to determine the proportion of treatment-naïve people entering care who initiated ART according to the DHHS and type of ART regimens prescribed between January 2016 and December 2020. We analyzed ART prescriptions, both at the national level and per individual HIV treatment centers. We calculated the monthly ART costs based on Dutch medicine prices listed on www.medicijnkosten.nl for each calendar year.

Results

In 2016, an integrase inhibitor-containing regimen was initiated in 77.3% which increased to 87.8% in 2020. The compliance rate to DHHS-recommended initial regimens ranged from 82.8% in 2016 to 90.9% in 2020. Most patients received single-tablet regimens, 81.3% in 2016 to 60.3% in 2020. After the introduction the gMTRs showed a steady increase from 17.8% in 2018 to 37.8% in 2020. The cost of the first-line regimen per patient decreased by 22.9% in 2020 compared with 2017. The decrease was larger in centers where treatment-naïve individuals with HIV were preferentially initiated on a gMTR.

Conclusions

There was a high compliance to the “DHHS-recommended initial regimens for most people with HIV” in the Netherlands. Most people who initiated ART received STRs, although the percentage of people who started on STRs gradually decreased over time. The use of gMTRs increased over time and was associated with lower medication costs.
Asentamientos informales en España: situación residencial, perfiles y condiciones de vida de sus habitantes
Authors: Haz-Gomez Francisco Eduardo , López Carmona Diego Pascual
Published: July 2024

Los asentamientos informales son una de las manifestaciones más extremas del fenómeno de la exclusión residencial. Conjuntamente, también son una de las formas menos investigadas, tanto en España como en la Unión Europea. Diferentes reportes de instituciones del Tercer Sector apuntan a que los asentamientos informales en España (poblados chabolistas y edificios en ruinas habitados) comprenden una cifra que se sitúa entre los diez mil y los quince mil habitantes. El proyecto KËR (casa en lengua Wólof, hablada en Senegal y Mauritania) tiene como propósito principal investigar las características de esta población y elaborar el primer mapa sobre la discriminación por origen racial y/o étnico en el ámbito de la vivienda de personas que residen en asentamientos informales. Para ello, desarrolla una macroencuesta que alcanza, al menos, al diez por ciento de toda la población estimada. Se trata del primer proyecto de estas características que se lleva a cabo en un país miembro de la Unión Europea. Basándose en los datos obtenidos de esta investigación, el presente artículo realiza una serie de análisis de correspondencias múltiples que tienen como objetivo principal conocer aquellas variables que, con mayor significación, explican las principales características compartidas de los habitantes de estos asentamientos informales en España. Los resultados obtenidos de este análisis ponen de manifiesto que la variable con mayor nivel explicativo es identidad étnico-cultural, así como que, el perfil de habitante de asentamientos informales que más consistencia muestra es el de un hombre subsahariano, soltero, o sin cargas familiares, y con ocupación laboral en cualquiera de sus modalidades.
Gyerekek célkeresztben
Authors: Tészabó Júlia
Published: July 2024

A gyerekek háborús konfliktusokhoz kapcsolódó játékainak és játékszereinek kutatása két irányban végezhető el. Az egyik terület – különösen a 20. század háborúinak kapcsán – a játékpiac határozott szerepvállalása a háborúra való felkészülés, annak erkölcsi, ideológiai alátámasztása (hazafiság, revíziós törekvések, honvédelem) és a hadi cselekményekkel kapcsolatos korszerű eszközök megjelenítése terén, a játékszerek kínálatában. A másik, a konfliktusok kiéleződését, a lakosságot is érintő harci cselekmények megindulását követően, a megváltozott élethelyzetben lehetséges, a gyerekek számára feloldást kínáló, főként spontán játékok és játékeszközök vizsgálata. E két terület, bár a gyerekek játék iránti igénye összekapcsolja őket, időben és játéktartalmában, anyagi eszközeiben élesen különválik, és ez a kettősség vagy változás szükségszerűen meghatározza tanulmányunk szerkezetét, tematikus egységeit.
Projeto e Experimentação de um Filtro Passa Faixa Ativo para Primeiro Estágio na Amplificação de Áudio
Authors: Evaristo Ronaldo Mendes , Bueno Marcelo Pontes , Souza Camille Vitoria Pereira de
Published: July 2024

O processamento de sinais de áudio é uma área importante na Engenharia Eletrônica, que pode ser usado desde em sistemas de comunicação até em sistemas de entretenimento. Dentre os vários equipamentos utilizados nesse processamento, temos os amplificadores de áudio, responsáveis por elevar a potência dos sinais a serem transmitidos via ondas de rádio, cabos ou pelo ambiente. O primeiro estágio de um circuito de amplificação é a recepção do sinal elétrico de um transdutor de entrada. Isso requer um circuito que funcione como isolador, amplificador e filtro passa faixa. Essas três funções podem ser executadas por um circuito baseado em um Amplificador Operacional na configuração não inversora com dois resistores e dois capacitores que precisam ser calculados para atender a determinadas especificações desejadas no domínio da frequência. Neste artigo apresentamos um novo procedimento para o projeto desse circuito. Aplicamos o roteiro desenvolvido, calculamos os valores dos componentes, implementamos o circuito em bancada, testamos e comparamos os diagramas de Bode teórico e experimental para a faixa de som audível. Por fim, mostramos que os resultados experimentais estão de acordo com os teóricos e concluímos o trabalho provendo aos projetistas um roteiro interessante de ser utilizado em bancadas de trabalho.
Mercado Brasileiro da Maçã e a Sidra
Authors: Ranzan Alina Paese Savaris , Santos Carlos Honorato Schuch , Ranzan Cassiano , Badejo Marcelo
Published: July 2024

A cadeia produtiva da maçã encontra-se em ascensão no Brasil, com alto índice de crescimento ainda que com apenas cinco décadas de história. O mercado ainda tem possibilidade de expansão, tanto a nível de Brasil como mundialmente, sendo um grande obstáculo a logística de armazenamento e transporte para longas distâncias em razão da perecibilidade da fruta. Com a alta qualidade das maçãs produzidas no país, ainda que se exija investimento tecnológico, o aumento da produção e direcionamento de frutas sadias e de alta qualidade para a produção de sidra pode agregar valor à cadeia e ser uma opção economicamente rentável. Para tanto, cumpre compreender a cadeia da maçã, o mercado já estabelecido, os desafios da logística e os custos envolvidos a fim de prospectar a sustentabilidade da cadeia e a perspectiva de evolução ao desenvolvimento da sidra. Através de uma visão estratégica e de marketing, a agregação de valor através da produção da sidra de boa qualidade, prospecta a possibilidade resultados favoráveis ao setor.
Modelagem matemática, projeto e controle preditivo de um conversor boost
Authors: Soares Alexandre Filgueira , Diehl Pedro Henrique , Evald Paulo Jefferson Dias de Oliveira
Published: July 2024

Os conversores boost são amplamente utilizados para elevar a tensão de saída a um nível superior à tensão de entrada de diversos sistemas. Esses conversores são comumente utilizados em baterias para automóveis elétricos, frenagem regenerativa de motores de corrente contínua, quadrirrotores, carregadores solares, amplificadores de áudio de potência e diversos outros dispositivos. Para tal, este dispositivo armazena energia no campo magnético de um indutor e, em seguida, transfere essa energia para um capacitor de tal forma que a tensão do capacitor pode aumentar além da tensão da fonte que forneceu energia ao indutor. Porém, para obter uma tensão desejada na saída, é fundamental utilizar um controlador confiável para realizar a regulação desse sistema. Este artigo apresenta a modelagem matemática, projeto de dimensionamento de acordo com especificações estabelecidas e controle preditivo de um conversor boost. A estratégia de controle utilizada para regular a tensão deste conversor é um controlador deadbeat, o qual possui uma estrutura simples, porém provê rápida resposta ao sistema em malha fechada. Os resultados de simulação numérica demonstram a superioridade do controlador preditivo em relação a um controlador proporcional-integral-derivativo.
Metodologias ativas em aulas de Sociologia no Ensino Médio: uma revisão sistemática de literatura
Authors: Lopes Maristela Santos , Botezini Natana Alvina , Wives Daniela Garcez , Fernandes Alice Munz
Published: July 2024

Metodologias ativas são instrumentos emergentes para a melhoria do processo de ensino-aprendizagem, inclusive para o público adolescente. Assim, a pesquisa realizada objetivou analisar as metodologias ativas comumente empregadas nas aulas de Sociologia ministradas junto ao Ensino Médio. Para tanto, realizou-se uma revisão sistemática da literatura disponível no Portal CAPES e nos periódicos especializados Revista Café com Sociologia, Cadernos da CABECS, Anais SBS e Anais ENESEB. O portfólio analisado foi composto por 35 manuscritos, cujos resultados indicaram que relatos de experiência apresentaram incremento a partir de 2017, sendo que o Sul e o Sudeste foram responsáveis pela maioria das publicações. Também observou-se que não há relação entre a atuação de “pibidianos” e estagiários concluintes e a implementação dessas práticas. Constatou-se ainda que a adoção de metodologias ativas independe das temáticas abordadas e que recursos audiovisuais tendem a atuarem como gatilhos para discussões, sendo jogos didáticos e escritas de si metodologias recorrentes.
Uma experiência formativa em uma Escola Freinet em tempos de Pandemia
Authors: Rela Suelen Aparecida de Carvalho , Anjos Daniela Dias dos
Published: July 2024

Este trabalho integrou uma pesquisa de mestrado que buscou investigar a inserção dos alunos de pedagogia de uma instituição de ensino superior do estado de São Paulo nas escolas-campo para a realização do estágio curricular supervisionado em tempos de pandemia. Envolveu como metodologia entrevistas narrativas, diário de campo e registros produzidos pelas alunas da disciplina de Estágio Curricular Supervisionado no Ensino Fundamental. Apresenta-se aqui a situação de estágio vivenciada por Rubi, uma das estudantes participantes da pesquisa, com o objetivo de analisar, por meio de suas narrativas, sua experiência formativa em uma escola Freinet, a possibilidade da parceria entre estagiária e professora da sala de aula, e as tensões experienciadas para a realização de estágio no contexto da pandemia da Covid-19.
Binarismo e heteronormatividade na demarcação de padrões e estigmas: uma revisão integrativa
Authors: Junior Marcus Vinicius de Paula Pereira , Teixeira Maria Filomena Rodrigues , Rodrigues Ana Alexandra Valente
Published: July 2024

As sociedades têm sido historicamente estruturadas por padrões que moldam os modos de subjetivação, resultando em marginalização daqueles que desafiam essas normas. No âmbito do gênero e da sexualidade, o binarismo e a heteronormatividade exercem influência sobre as práticas sociais, levando à estigmatização daqueles que não se encaixam nesses padrões preestabelecidos. Diante disso, surge a indagação: de que maneira o binarismo e a heteronormatividade impactam estruturalmente na manutenção ou transformação das práticas sociais relacionadas ao gênero e à sexualidade? Com o objetivo de investigar essa questão, realizou-se uma revisão da literatura centrada nos conceitos de binarismo e heteronormatividade, visando compreender como os estereótipos de gênero e sexualidade influenciam pensamentos, discursos e comportamentos. Por meio de uma abordagem integrativa e exploratória, utilizando análise de conteúdo, foi possível elucidar a relevância do binarismo e da heteronormatividade na definição de padrões sociodemográficos em diversos contextos, indicando uma tendência à ressignificação das relações de gênero e sexualidade. Destaca-se, ainda, a importância da Educação na promoção dessas transformações.
A “Mulher Negra” confronta o “Mito Fundador”: heresias ensaísticas em Lélia Gonzalez e Marilena Chaui
Authors: Pires Maria Raquel Gomes Maia
Published: July 2024

Resumo: No presente artigo, discutimos as contribuições do gênero ensaio ao pensamento crítico feminista, identificadas nos procedimentos formais da linguagem nos textos de Lélia Gonzalez e de Marilena Chaui acerca da sociedade brasileira. Questionamos de que maneira as características do ensaio potencializam a crítica ao sexismo, racismo e autoritarismo nas concepções da “Mulher negra”, em Gonzalez, num confronto imaginário com o “Mito Fundador”, em Chaui. Objetivamos localizar na escrita das autoras os artifícios característicos do ensaio, mobilizados para estimular reflexões críticas nas leitoras. Em meio ao embate da “Mulher Negra” com o “Mito Fundador”, apostamos nos sentidos erráticos do ensaio diante do discurso dogmático que violenta o corpo negro feminino.
Palavras-chave: Lélia Gonzalez; Feminismo; Ensaio; Linguagem; Teoria Crítica
The “Black Woman” confronts the “Founding Myth”: essay heresies in Lélia Gonzalez and Marilena Chaui
Abstract: In this article, we discuss the contributions of the essay genre to feminist critical thinking, identified in the formal procedures of language in the texts of Lélia Gonzalez and Marilena Chaui regarding Brazilian society. We question how the characteristics of the essay strengthen criticism of sexism, racism and authoritarianism in the conceptions of the “Black Woman”, in Gonzalez, in an imaginary confrontation with the “Founding Myth” in Chaui. We aimed to locate, in the authors’ writing, the characteristic devices of the essay, mobilized to stimulate critical reflections in the readers. In the midst of the clash between the “Black Woman” and the “Founding Myth”, we bet on the erratic meanings of the essay faced with the dogmatic discourse that violates the female Black body.
Keywords: Lélia Gonzalez; Feminism; Essay; Language; Critical Theory
La “Mujer Negra” se enfrenta al “Mito Fundador”: herejías ensayísticas en Lélia González y Marilena Chaui
Resumen: En este artículo, discutimos las contribuciones del género ensayo al pensamiento crítico feminista, identificadas en los procedimientos formales del lenguaje en los textos de Lélia Gonzalez y Marilena Chaui sobre la sociedad brasileña. Nos preguntamos cómo las características del ensayo potencian la crítica al sexismo, racismo y autoritarismo en las concepciones de la “Mujer Negra”, en González, en un enfrentamiento imaginario con el “Mito Fundador”, en Chaui. Nuestro objetivo es ubicar en la escritura de las autoras los dispositivos característicos del ensayo, movilizados para estimular reflexiones críticas en las lectoras. En medio del choque de la “Mujer Negra” con el “Mito Fundador”, apostamos por los significados erráticos del ensayo frente al discurso dogmático que violenta el cuerpo negro femenino.
Palabras clave: Lélia Gonzalez; Feminismo; Ensayo; Lenguaje; Teoría Crítica
 
Data de registro: 14/03/2023
Data de aceite: 10/07/2023
Characterization of Polyvinylpyrrolidone-2-Acrylamide-2-Methlypropansulphonic Acid Based Polymer as a Corrosion Inhibitor for Copper and Brass in Hydrochloric Acid
Authors: Makhatha Mamookho Elizabeth , Tsoeunyane George M. , Yvette Maqubela Luyanda Masana , Sherbakov Sergei , Podgayskaya Daria , H. M. Vishwanatha , Kumar Pawan
Published: July 2024

Copper and its alloy are susceptible to corrosion in heat exchangers during acid cleaning. The corrosion leads to materials loss and damage; hence it is important to prohibit such corrosion damage using an eco-friendly corrosion inhibitor. In the current work, a polymer composite-based corrosion inhibitor was prepared using polyvinylpyrrolidone (PVP) and 2-Acrylamido-2-methylpropane sulfonic acid (AMPS). The PVP copolymer undergoes polymerization with the AMPS having several interconnected uniformly sized pores and produces a PVP–AMPS composite with rod-like microstructure. The effect of concentration, time, and temperature on corrosion inhibition efficiency (IE) of PVP–AMPS composite was studied for copper and brass in hydrochloric acid (HCl) solution. The IE increases with concentration and decreases with time and temperature. A change in cathodic and anodic Tafel slopes with the concentration of PVP–AMPS inhibitors was observed. The increase in IE with concentration was attributed to the solubility of PVP–AMPS composite in HCl. However, the decrease in IR with time and temperature was due to the desorption of PVP–AMPS composite from the surface of copper and brass and also due to the exothermic reactions at higher temperature. A few peaks in FTIR spectra at 3000–3100 cm−1 were missing, which is due to the stretching vibration of H–C during the crosslinking polymerization. Further, the absence of the O–H peak indicated that the polymerization process removed the water molecule. The best correlation coefficient (R2) for the Langmuir adsorption mechanism was achieved. A negative Gibbs free energy (ΔG) envisages the spontaneity of the adsorption process. However, the | ΔG| for adsorption was less than 20 kJmol−1 confirming the process as physisorption. A shift in anodic and cathodic branches in the presence of the PVP–AMPS inhibitor indicated a mixed-type inhibitor behavior.
Institutionalization of Multicultural Values in Religious Education in Inclusive Schools, Indonesia
Authors: Indriyani Ma'rifah  , Sibawaihi
Published: July 2024

Purpose – Sekolah Tumbuh, an educational institution in Yogyakarta, is characterized as an inclusive school that encourages respect for diversity and difference. This study aims to investigate how multicultural values in Sekolah Tumbuh are integrated into educational aspects, allowing them to incarnate as a form of institutionalization.
Design/methods/approach – This study used a phenomenological approach in qualitative methods. The data collection methods involved observation, in-depth interviews, and documentation. The number of respondents was 25 people, including the school principal, religious teachers, students, and employees of Sekolah Tumbuh.
Findings – The data analysis results have shown that the institutionalization of multicultural values in Sekolah Tumbuh is in the form of systematics. This process involves a series of solid commitments, massive internalization of values, and institutionalization in the school's vision and mission. All school residents have a strong responsibility and commit to implementing these multicultural values.
Research implications/limitations – The best practices carried out by Sekolah Tumbuh can be used as a role model for other schools. These findings have positive implications for the development of multicultural education at the institutional level.
Originality/value – This study has contributed to an in-depth understanding of how multicultural values in Sekolah Tumbuh are integrated into aspects of education, including religious education and being institutionalized. Also, this study's results contribute to the development of the concept of multicultural education in Indonesia.
Cooperative strategy to reduce path length in risky environments
Authors: Chaves Osorio José Andrés , Cortés Osorio Jimy Alexander , González Ríos Edward Andrés
Published: July 2024

Objective: Design an artificial intelligence system based on information from the environment that can recommend the shortest path to an individual or vehicle, or robot that moves between two points with the lowest risk of contagion with coronavirus COVID-19.
Methodology: The cooperative strategy for path reduction involves a management and monitoring system and two explorer agents. Explorer agents are equipped with path planning algorithms (GBFS and A*) enhanced with incremental heuristics in order to find two different sets of preliminary paths (the first in direction start-goal and the second in the opposite direction). Subsequently, a management and monitoring system estimates a preliminary shortest path for each path planner then obtains a shortest path by comparing the paths attained with the path planners. This research emerges within the field of distributed intelligence in robotics to determine the benefits of teamwork interactions compared to individual work. In this study, 300 tests that involve the cooperative strategy were executed using ten different environments.
Results: The results of this paper illustrate that in 79 % of analyzed situations, definitive shortest estimated paths obtained by cooperative strategy outperformed preliminary paths found individually by path planners. Over 20.5 % of tested cases yielded significant path reductions (greater than 100 % in relation to the shortest definitive path).
Conclusions: In this work, an artificial intelligence system was designed, whose tests show a good performance. The intelligent system uses Distributed Intelligence implemented in a cooperative team formed by a management and monitoring system and two explorer agents, who, based on information from the environment, recommend the shortest path to an individual or vehicle or robot who wants to travel between two points located in an environment at risk of contagion with coronavirus COVID-19.
Financing: This work was supported in part by the Universidad Tecnológica de Pereira through Vicerrectoría de Investigaciones Innovación y Extensión, Project name: Sistema de obtención de rutas más seguras bajo situación de pandemia caso covid-19, Project code: 3-20-11, and in part by the Universidad nacional de Colombia.
(Re)construcción arquitectónica del conjunto religioso de La Cruz de Zacate de Tepic. Encrucijada de influencias
Authors: Ramos-Delgado Raymundo , Flores-Rodríguez Carlos E
Published: July 2024

El templo de La Cruz de Tepic, y posteriormente el convento del mismo nombre, ha transformado sus espacialidades durante más de cuatro siglos. A partir de la milagrosa aparición de la Santa Cruz de Zacate, descubierta a inicios del siglo XVII, en el camino vecinal que unía a esta ciudad con el convento franciscano de Xalisco, se consolidaría una de las advocaciones más importantes en el occidente del México virreinal. Lo anterior trajo consigo la constante reconstrucción arquitectónica de un centro religioso que renovaba sus tecnologías constructivas y corrientes estilísticas, como un reflejo de las formas de pensamiento de periodos históricos específicos. El presente artículo, a partir de una postura hermenéutica, tiene como objetivo visualizar estas diferentes etapas constructivas, estilísticas e ideológicas del conjunto religioso de La Cruz de Tepic, utilizando para ello los tres estadios el método progresivo-regresivo propuesto por Henri Lefebvre. De esta manera, se advertirán por lo menos seis etapas constructivas y, posteriormente, a partir de dicha reconstrucción arquitectónica, se revelarán las distintas integraciones espaciales que se han tenido a lo largo del tiempo dentro de este complejo religioso.
Metodologías participativas en arquitectura: las propuestas pioneras de Turner, Habraken y Alexander
Authors: Palero Juan Santiago
Published: July 2024

Se propone sistematizar tres caminos diferentes para abordar instancias participativas en arquitectura que permitan afrontar intervenciones en el ambiente construido desde el diálogo entre técnicos y vecinos. Para esclarecer estos caminos, se tomarán como referencias las propuestas teóricas de tres arquitectos que sentaron las bases de la participación en las disciplinas proyectuales durante las décadas del sesenta y el setenta: John Turner, Nicholas John Habraken y Christopher Alexander. Si bien el aporte de estos autores suele destacarse en un sentido general, como fundamentos conceptuales de la participación en arquitectura, este trabajo apunta a interpretar sus escritos con una mirada metodológica con el fin de alcanzar, más que una defensa de la participación de los usuarios, distintos caminos para llevarla a cabo. En la presentación de resultados, los diferentes caminos se sistematizan según sus elementos metodológicos (rol de los técnicos, rol de los habitantes, etapas e instrumentos). En la discusión se aborda el trasfondo conceptual de cada propuesta y en las conclusiones se incluyen una serie de recomendaciones para orientar decisiones metodológicas en futuras intervenciones participativas según los requisitos del contexto y el posicionamiento ante el ejercicio profesional.
Análise entre percepção de risco de desastres naturais com a satisfação do usuário no contexto residencial
Authors: Geronimo Del-Roio Iolanda , Lorenz-Fontolan Beatrice , Ramos-Esperidião Aline , Iarozinski-Neto Alfredo
Published: July 2024

As atividades humanas, combinadas à ausência de planejamento urbano, degradam a qualidade de vida e o senso de segurança das pessoas. Contudo, quais aspectos específicos do ambiente urbano estão ligados à percepção de risco de desastres naturais? Por meio da abordagem do método Survey, o estudo coletou informações de uma amostra de 279 proprietários, selecionada de forma não probabilística por conveniência. Foram examinadas as correlações entre as percepções subjetivas de risco de desastres naturais e a satisfação com a moradia e com o entorno. Além disso, o artigo investigou como o perfil socioeconômico da amostra se relaciona com a percepção de risco de desastres naturais. Os resultados indicaram que a preocupação com eventos ambientais adversos influencia negativamente a satisfação. No contexto habitacional, características como os materiais da fachada, a iluminação e a segurança mostraram uma relação inversa com a percepção de risco. Da mesma forma, elementos do ambiente urbano, como abastecimento de água e saneamento, acesso à internet e à telefonia, e limpeza das vias públicas e das calçadas revelaram uma correlação negativa. Portanto, a qualidade da infraestrutura nos bairros interfere na maneira como os residentes percebem sua proteção contra possíveis desastres naturais no ambiente urbano.
Blood pressure and heart rate variability to assess autonomic response to an acute bout of high intensity interval exercise in healthy young adults
Authors: Waghmare Saniya , Whitaker‐Hilbig Alicen A. , Chertoff Mark , Billinger Sandra A.
Published: July 2024

Autonomic nervous system (ANS) activity causes acute variations in blood pressure (BP) and heart rate (HR). These systems are challenged during high intensity interval exercise (HIIE). However, BP variability (BPV) and HR variability (HRV) response to HIIE is unknown. We characterized BPV and HRV during an acute HIIE bout using spectral low frequency [LF] and high frequency [HF] domains. We hypothesized that BPV would increase and HRV would decrease during high‐intensity and active‐recovery of HIIE compared to baseline [BL] and BPV would reduce and HRV would increase during cool down, post‐HIIE, and 30 min post‐HIIE compared to BL. HIIE involved 10 min of alternating high‐intensity and active‐recovery (approximately 70% and 10% of Wattmax) on a recumbent stepper. We did a secondary analysis on 23 datasets. The participants were 25 ± 1.5 years, 48% females. Our results showed high‐intensity BPV LF was not significantly different from BL while HF increased. HRV LF and HF decreased compared to BL. During active‐recovery, LF and HF for BPV and HRV increased greater than high‐intensity. HRV LF and HF returned to BL after 30 min of recovery, whereas BPV HF was higher compared to BL. The rapid switching during HIIE uniquely modulates cardiovascular and ANS.
Rational points on a class of cubic hypersurfaces
Authors: Jiang Yujiao , Wen Tingting , Zhao Wenjia
Published: July 2024

Let

r
⩾
3

r\geqslant 3

be an integer and 𝑄 any positive definite quadratic form in 𝑟 variables.
We establish asymptotic formulae with power-saving error terms for the number of rational points of bounded height on singular hypersurfaces

S
Q

S_{Q}

defined by

x
3

=

Q
⁢

(

y
1

,
…
,

y
r

)

⁢
z

x^{3}=Q(y_{1},\dots,y_{r})z

.
This confirms Manin’s conjecture for any

S
Q

S_{Q}

.
Our proof is based on analytic methods, and uses some estimates for character sums and moments of 𝐿-functions.
In particular, one of the ingredients is Siegel’s mass formula in the argument for the case

r
=
3

r=3

.
Examining the impact of foreign language anxiety and language contact on oral proficiency: a study of Chinese as a second language learners
Authors: Gong Yang (Frank) , Chen Mo , An Ziyi
Published: July 2024

This study addresses gaps in the existing literature on foreign language anxiety (FLA) by examining its impact on the oral proficiency of Chinese as a second language (CSL) learners. Unlike previous research, this investigation includes less commonly taught languages and considers the role of language contact as a mediating variable. Using structural equation modelling (SEM), we reveal that (1) CSL learning anxiety negatively affects CSL oral complexity and fluency in a direct way, but does not influence oral accuracy; (2) language contact affects CSL oral proficiency, with verbal contact having a particular impact on oral fluency; and (3) language contact does not mediate the relationship between CSL learning anxiety and oral proficiency. This study contributes to current theories of FLA in L2 acquisition by highlighting the roles of anxiety in different oral proficiency measurements even though the mediating effect of language contact does not exist.
Characterizations of minimal elements of upper support with applications in minimizing DC functions
Authors: Mirzadeh Somayeh , Barsam Hasan , Ciurdariu Loredana
Published: July 2024

In this study, we discuss on the problem of minimizing the differences of two non-positive valued increasing, co-radiant and quasi-concave (ICRQC) functions defined on

X

X

(where

X

X

is a real locally convex topological vector space). For this purpose, we first gave different characterizations of the upper support set’s minimal elements of non-positive co-radiant functions. Then, we presented sufficient and necessary conditions for the global minimizers of the differences of two non-positive ICRQC functions.
Hydrogen bonding and π⋅⋅⋅halogen interactions in the crystal structure of bis(theophyllinium) hexachloridoplatinate(IV) monohydrate
Authors: Reiss Guido J. , Wyshusek Maik , Rheinländer Jana C. , Konovalova Irina S.
Published: July 2024

C14H20Cl6N8O5Pt, monoclinic, P21/n (no. 14), a = 13.4907(2) Å, b = 13.32240(10) Å, c = 13.8035(2) Å, β = 102.241(1)∘, Z = 4, V = 2424.48(5) Å3, R
gt(F) = 0.0256, wR
ref(F
2) = 0.0740, T = 290 K.
A unique pseudo-eligibility analysis of longitudinal laboratory performance data from a transgender female competitive cyclist
Authors: Hamilton Blair R. , Hu Ke , Guppy Fergus , Pitsiladis Yannis
Published: July 2024

Background and Aims

The Union Cycliste Internationale has deemed transgender female athlete’s ineligible for the female category due to concerns about performance advantages. We conducted a follow-up analysis on laboratory-based performance indicators of sports performance using data from a longitudinally assessed transgender woman athlete undergoing gender-affirming hormone therapy (GAHT).

Methods

We evaluated laboratory performance indicators in transgender and cisgender women athletes using dual-energy X-ray absorptiometry scanning, handgrip strength measurement, jump testing, and cardiopulmonary exercise. Additionally, we assessed a transgender sub-elite cyclist before and after undergoing GAHT.

Results

After one year of GAHT, the transgender athlete showed declines in handgrip strength (7–13 %), countermovement jump (23–29 %), and V̇O2max (15–30 %). After 3 months, several performance indicators (absolute handgrip, peak power, relative peak power, average power, relative average power, V̇O2max and relative V̇O2max) were above the mean of cisgender female athletes, while others (Relative handgrip, countermovement jump and relative countermovement jump) were below. Similar trends were observed at 6 months and 1 year.

This hypothetical analysis, although with limited evidence, suggests the transgender athlete could compete equitably in elite cycling events within the female category after one year of GAHT. Adjustments based on competition data would ensure fairness. Further analysis after an additional 12 months is recommended to assess the impact of 2 years of GAHT. An outright ineligibility for the female category for transgender women athletes would hinder a true assessment of performance fairness.