bluuebunny/crossref_metadata_2025 huggingface dataset:
Asynchronous Distance Learning of the National Institutes of Health Stroke Scale During the COVID-19 Pandemic (E-Learning vs Video): Randomized Controlled Trial
Authors: Suppan Mélanie , Stuby Loric , Carrera Emmanuel , Cottet Philippe , Koka Avinash , Assal Frédéric , Savoldelli Georges Louis , Suppan Laurent
Published: January 2021

Background

The COVID-19 pandemic has considerably altered the regular medical education curriculum while increasing the need for health care professionals. Senior medical students are being incrementally deployed to the front line to address the shortage of certified physicians. These students, some of whom will be fast-tracked as physicians, may lack knowledge regarding the initial management of time-critical emergencies such as stroke.

Objective

Our aim was to determine whether an e-learning module could improve asynchronous distance knowledge acquisition of the National Institutes of Health Stroke Scale (NIHSS) in senior medical students compared to the traditional didactic video.

Methods

A randomized, data analyst–blinded web-based trial was conducted at the University of Geneva Faculty of Medicine between April and June 2020. Fifth year medical students followed a distance learning path designed to teach the NIHSS. The control group followed the traditional didactic video created by Patrick Lyden, while the e-learning group followed the updated version of a previously tested, highly interactive e-learning module. The main outcome was the score on a 50-question quiz displayed upon completion of the learning material. The difference in the proportion of correct answers for each specific NIHSS item was also assessed.

Results

Out of 158 potential participants, 88 started their allocated learning path and 75 completed the trial. Participants who followed the e-learning module performed better than those who followed the video (38 correct answers, 95% CI 37-39, vs 35 correct answers, 95% CI 34-36, P<.001). Participants in the e-learning group scored better on five elements than the video group: key NIHSS concepts (P=.02), the consciousness – global item (P<.001), the facial palsy item (P=.04), the ataxia item (P=.03), and the sensory item (P=.04).

Conclusions

Compared to the traditional didactic video, a highly interactive e-learning module enhances asynchronous distance learning and NIHSS knowledge acquisition in senior medical students.
Mapping Research Trends of Universal Health Coverage From 1990 to 2019: Bibliometric Analysis
Authors: Ghanbari Mahboubeh Khaton , Behzadifar Masoud , Doshmangir Leila , Martini Mariano , Bakhtiari Ahad , Alikhani Mahtab , Bragazzi Nicola Luigi
Published: January 2021

Background

Universal health coverage (UHC) is one of many ambitious, health-related, sustainable development goals. Sharing various experiences of achieving UHC, in terms of challenges, pitfalls, and future prospects, can help policy and decision-makers reduce the likelihood of committing errors. As such, scholarly articles and technical reports are of paramount importance in shedding light on the determinants that make it possible to achieve UHC.

Objective

The purpose of this study is to conduct a comprehensive analysis of UHC-related scientific literature from 1990 to 2019.

Methods

We carried out a bibliometric analysis of papers related to UHC published from January 1990 to September 2019 and indexed in Scopus via VOSviewer (version 1.6.13; CWTS). Relevant information was extracted: the number of papers published, the 20 authors with the highest number of publications in the field of UHC, the 20 journals with the highest number of publications related to UHC, the 20 most active funding sources for UHC-related research, the 20 institutes and research centers that have produced the highest number of UHC-related research papers, the 20 countries that contributed the most to the research field of UHC, the 20 most cited papers, and the latest available impact factors of journals in 2018 that included the UHC-related items under investigation.

Results

In our analysis, 7224 articles were included. The publication trend was increasing, showing high interest in the scientific community. Most researchers were from the United States, the United Kingdom, and Canada, with Thailand being a notable exception. The Lancet accounted for 3.95% of published UHC-related research. Among the top 20 funding sources, the World Health Organization (WHO), the Bill and Melinda Gates Foundation, and the National Institutes of Health (NIH) accounted for 1.41%, 1.34%, and 1.02% of published UHC-related research, respectively. The highest number of citations was found for articles published in The Lancet, the American Journal of Psychiatry, and the Journal of the American Medical Association (JAMA). The top keywords were “health insurance,” “insurance,” “healthcare policy,” “healthcare delivery,” “economics,” “priority,” “healthcare cost,” “organization and management,” “health services accessibility,” “reform,” “public health,” and “health policy.”

Conclusions

The findings of our study showed an increasing scholarly interest in UHC and related issues. However, most research concentrated in middle- and high-income regions and countries. Therefore, research in low-income countries should be promoted and supported, as this could enable a better understanding of the determinants of the barriers and obstacles to UHC achievement and improve global health.
Mapping Research Trends of Universal Health Coverage From 1990 to 2019: Bibliometric Analysis (Preprint)
Authors: Ghanbari Mahboubeh Khaton , Behzadifar Masoud , Doshmangir Leila , Martini Mariano , Bakhtiari Ahad , Alikhani Mahtab , Bragazzi Nicola Luigi
Published: January 2021

BACKGROUND

Universal health coverage (UHC) is one of many ambitious, health-related, sustainable development goals. Sharing various experiences of achieving UHC, in terms of challenges, pitfalls, and future prospects, can help policy and decision-makers reduce the likelihood of committing errors. As such, scholarly articles and technical reports are of paramount importance in shedding light on the determinants that make it possible to achieve UHC.

OBJECTIVE

The purpose of this study is to conduct a comprehensive analysis of UHC-related scientific literature from 1990 to 2019.

METHODS

We carried out a bibliometric analysis of papers related to UHC published from January 1990 to September 2019 and indexed in Scopus via VOSviewer (version 1.6.13; CWTS). Relevant information was extracted: the number of papers published, the 20 authors with the highest number of publications in the field of UHC, the 20 journals with the highest number of publications related to UHC, the 20 most active funding sources for UHC-related research, the 20 institutes and research centers that have produced the highest number of UHC-related research papers, the 20 countries that contributed the most to the research field of UHC, the 20 most cited papers, and the latest available impact factors of journals in 2018 that included the UHC-related items under investigation.

RESULTS

In our analysis, 7224 articles were included. The publication trend was increasing, showing high interest in the scientific community. Most researchers were from the United States, the United Kingdom, and Canada, with Thailand being a notable exception. The Lancet accounted for 3.95% of published UHC-related research. Among the top 20 funding sources, the World Health Organization (WHO), the Bill and Melinda Gates Foundation, and the National Institutes of Health (NIH) accounted for 1.41%, 1.34%, and 1.02% of published UHC-related research, respectively. The highest number of citations was found for articles published in The Lancet, the American Journal of Psychiatry, and the Journal of the American Medical Association (JAMA). The top keywords were “health insurance,” “insurance,” “healthcare policy,” “healthcare delivery,” “economics,” “priority,” “healthcare cost,” “organization and management,” “health services accessibility,” “reform,” “public health,” and “health policy.”

CONCLUSIONS

The findings of our study showed an increasing scholarly interest in UHC and related issues. However, most research concentrated in middle- and high-income regions and countries. Therefore, research in low-income countries should be promoted and supported, as this could enable a better understanding of the determinants of the barriers and obstacles to UHC achievement and improve global health.
Tools for distance learning and e-learning in communities of students and teachers: composition, usage and preferences
Authors: Sergeev Alexey N.
Published: January 2021

Problem and purpose . The article describes the issue of using e-learning and distance learning tools in the communities of students and teachers. The urgency of solving this issue is determined by the need to develop the digital educational environment that can be more or less focused on e-learning and distance learning. The goals of the research were to identify the degree of demand for distance and e-learning tools in the communities of students and teachers, as well as to establish the features of using the proposed tools in the conditions of their joint use. Methodology. In the course of the research the activities of students and teachers of the educational portal of the Volgograd State Social and Pedagogical University in the acade- mic year 2019-2020 were studied. The analysis presented the records of the facts and intensity of using distance (personal correspondence, posting the messages in the public space, presenting the tasks to the teacher) and e-learning (publishing the documents, developing e-course pages, doing self-check training tasks) tools. Based on the research results, teachers and students preferences in using e-learning and distance learning tools were determined, as well as features of joint use of tools. Results. The research has shown that there is a wide range of tools aimed at implementing both distance and e-learning technologies in Internet communities. The tools are quite independent from each other, which allows to build different learning strategies, more or less focused on e-learning and distance learning. Distance learning tools are in greater demand in terms of coverage, but e-learning tools are used more intensively. There is a significant difference in the ways the tools are used by teachers and students. At the same time, a considerable number of users combine different learning strategies, acting both as a teacher and a student. Conclusion. The data obtained in the research allow better understanding of the processes associated with the implementation of teaching in the Internet communities. Understanding the nature of these processes, possible strategies and behaviour preferences of teachers and students in the digital educational environment can become a basis for further development and improvement of online educational tools, as well as pedagogical technologies that are the basis for implementing educational activities on the Internet.
Resiliency and Culture: An Interdisciplinary Approach
Authors: Abi-Hashem Naji
Published: January 2021

In recent years, the topics of psychosocial resiliency and cultural competency have been on the forefronts of many academic disciplines and human-care services. This article explores the meaning, nature, and function of resiliency and provides an overview of its foundational role and integrative place in the fields of psychology, pedagogy, physiology, psychotherapy, spirituality, and community. All these explorations and discussions are presented from a sociocultural and interdisciplinary perspective. Most areas of learning and spheres of knowledge could further be advanced if they continue to incorporate cultural resiliency into their basic training approaches and ongoing skillful apprenticeships. This article emphasizes that the essence and manifestation of resiliency is rooted, not only in individual traits or abilities, but also in the capital resources already stored in the larger community - in its cultural wealth and generational wisdom. Resiliency is both an innate capacity, with various dispositions that is dormant within people and groups, and a skill that is gradually learned, intentionally established, and consistently built-up and developed. Then, it will be readily applied as a way-of-life, natural tendency, refined asset, and potential drive or passion for higher-functioning and livelihood, especially in time of adversity, misfortune, and calamity. This article encourages the practice of cross-cultural competence and cross-disciplinary growth. It promotes multi-academic learning and collaboration in order to foster a comprehensive resiliency-training and a dependable approach for survival-coping. Also, this article encourages an enduring social awareness, a continuous emotional empowerment, and a relational respect coupled with cultural humility.
Endoscopic Detection of Gastric Metastases in Skin Melanoma
Authors: Kabanov M. Yu. , Sementsov K. V. , Degterev D. B. , Belikova M. Ya. , Savchenkov D. K. , Koshelev T. E. , Stechishina A. K.
Published: January 2021

Aim. A clinical description of disseminated skin melanoma with endoscopic observation of its pathognomonic pigmented metastases into the stomach.Key points. A 66-yo patient was hospitalised with dyspnoea, general weakness, cough and suspected community-acquired pneumonia. The patient had a complex examination, including computed tomography, which revealed a presumed malignancy of the right lung with secondary changes in the chest and abdominal organs. Esophagogastroduodenoscopy (EGDS) visualised multiple pigmented spots and raised black plaques in cardia and the gastric body diagnosed as a metastasising melanoma in stomach. Endoscopic veriﬁcation of the metastases conﬁrmed the correct diagnosis of primary skin melanoma.Conclusion. Metastatic melanoma of the gastrointestinal tract has non-speciﬁc symptoms and most often occurs during the dissemination process. Endoscopy should be used to correctly verify pigmented mucosal lesions, necessarily allowing for non-pigmented gastric neoplasms in patients with skin melanoma in history.
UNIVERSALISMO, PLURALISMO EPISTEMOLÓGICO E MULTICULTURALISMO CRÍTICO
Authors: Rosa Isabela Santos Correia , Almeida Rosiléia Oliveira de , Santana Catiana Santos Correia
Published: January 2021

Este ensaio teórico tem como objetivo problematizar a possibilidade de uma nova posição epistemológica sobre demarcação de conhecimentos, a partir das discussões frente às convergências e divergências entre o universalismo, o pluralismo epistemológico e o multiculturalismo crítico, a fim de compreender como essas perspectivas teóricas poderiam ser acionadas pelos/as professores/as para subsidiar diferentes práticas pedagógicas. Para tanto, apresentamos as três principais posições epistemológicas da ciência (universalismo, multiculturalismo e pluralismo epistemológico), discutimos também acerca das variações do multiculturalismo presentes na literatura nacional e internacional, e, por fim, argumentamos pelo diálogo teórico e prático entre os dois posicionamentos que se mantêm mais evidentemente em disputa – o pluralismo epistemológico e o multiculturalismo crítico, com uma nova via de discussão epistemológica. Propomos aqui a ideia de um pluralismo científico, de modo que as ciências sejam correspondentes às diversas culturas. Trata-se de questionar o termo “ciência” como metáfora do poder, confrontando a hegemonia do discurso e desestabilizando as hierarquias que foram (im)postas historicamente e são refletidas nos dias atuais.
EDUCAÇÃO PARA A CIDADANIA GLOBAL
Authors: Santiago Mylene Cristina , Vargas Antunes Katiuscia Cristina , Akkari Abdeljalil
Published: January 2021

O presente artigo tem como objetivo apresentar e debater o conceito de cidadania global. Nossa problemática central é refletir sobre as possibilidades para a construção da Educação para Cidadania Global (ECG) no contexto brasileiro, estabelecendo uma relação com os debates curriculares, notadamente aqueles que dizem respeito à Base Nacional Curricular Comum (BNCC) e a Base Nacional Comum para a Formação Inicial de Professores da Educação Básica (BNC-Formação). Além disso, para colocar em cena os contextos de formação, apresentaremos um estudo exploratório realizado com estudantes do ensino superior, de diferentes instituições do Brasil, cujo objetivo foi conhecer o que os estudantes pensam sobre o processo de educação para a cidadania global. O conceito de educação para a cidadania global aparece com destaque na agenda educacional de 2030 e nos Objetivos de Desenvolvimento Sustentável (UNESCO, 2015), de forma que a implementação da ECG perpasse todos os níveis do sistema educacional.  Se essa ideia aparece na continuidade das orientações promovidas por organizações internacionais, é, no entanto contestada e difícil de operar nos sistemas nacionais de educação. Para além do que está presente nos documentos oficiais é fundamental problematizar como os currículos praticados nos cursos das áreas já mencionadas contribuem (ou não) para a compreensão do que seja cidadania global, com possibilidades de construção e ressignificação do conceito de cidadania, visando ampliá-lo, desde uma perspectiva crítica, englobando aspectos que perpassam pela superação da intolerância e construção de um pensamento global mais solidário.
EM OUTRAS PALAVRAS
Authors: Kelman Celeste Azulay , Santos Paulo José Assumpção dos
Published: January 2021

O atual momento histórico tem sido marcado, em termos políticos e ideológicos, pelo ressurgimento do autoritarismo e do conservadorismo, colocando em xeque iniciativas no campo educacional pautadas pelo respeito e valorização das diferenças no cotidiano escolar. Em contraponto a esse contexto, o presente texto tem como objetivo propor uma atividade pedagógica que destaca os sujeitos surdos e seu protagonismo com vistas à construção de um currículo decolonial e inter/multicultural. Destaca-se a necessidade de tal currículo, com potencial para revelar, incorporar e respeitar a história dos surdos, sujeitos presentes na escola inclusiva. Problematiza-se a ausência dessa história no currículo da disciplina História e se apresenta uma possibilidade de inclusão da mesma utilizando o método documentário. O exemplo aqui abordado refere-se a um evento emblemático na luta da comunidade surda para romper com a colonização a ela imposta pelos ouvintes: a greve dos universitários surdos da Universidade Gallaudet (EUA), em 1988. Busca-se por meio de “outras palavras” promover a consciência histórica dos surdos, assim como um olhar mais respeitoso e empático pelos ouvintes.
“DIVERSIDADE CULTURAL E CRIATIVIDADE”
Authors: Maia Maria Vitória , Miyata Edson
Published: January 2021

Motivado pela proximidade dos 20 anos da promulgação da Declaração Universal sobre a Diversidade Cultural da UNESCO, o objetivo do presente trabalho foi apontar caminhos para fortalecer a promoção da diversidade por meio da valorização da criatividade, tendo o debate curricular como nosso eixo. Essa ênfase temática advém do terceiro princípio da Declaração, intitulada “Diversidade e Criatividade”. Ressaltamos a força deste princípio para se pensar as complexas formações e relações sociais que se desenham na contemporaneidade, assim como sua potência para dialogar com a criatividade e desafiar estereótipos e preconceitos. Fundamentamos nosso pensamento a partir dos aportes de estudos da diversidade cultural, da criatividade e do currículo. Defendemos o fortalecimento do debate sobre uma educação cada vez mais vocacionada para acolher a diversidade cultural por meio de práticas educacionais criativas, assim como projetos curriculares que as apoiem e legitimem. Finalizamos com reflexões sobre a necessidade de se ampliar os estudos sobre essa questão, assim como sinalizamos o protagonismo da educação e de seus atores para propiciar avanços reais nesse campo.

Palavras-chave: Diversidade cultural. Criatividade. Currículo. UNESCO.
“REGRAS SÃO REGRAS, MESMO QUANDO ELAS NÃO EXISTEM”
Authors: Caetano Marcio , Silva Junior Paulo Melgaço da
Published: January 2021

A segunda década deste século está sendo marcada pela ascensão de discursos conservadores e perspectivas políticas que buscam apagar conquistas e lutas populares que marcaram vitórias de grupos e movimentos sociais de minorias políticas que repercutiram em agendas nos campos curriculares da educação. Nessa perspectiva, o objetivo deste artigo é refletir, a partir das provocações multiculturalistas decoloniais, sobre alguns eixos desencadeados pelo “pânico moral” em docentes que realizaram formações em gênero, sexualidade e relações étnico-raciais ofertadas pela Universidade Federal do Rio Grande, entre os anos de 2007 e 2016. Para tanto, realizamos quatro rodas de conversas com 24 docentes da Educação Básica da mesorregião do sudeste do Rio Grande do Sul. Em suas narrativas, as/os docentes apresentaram a escola como um universo de múltiplas culturas pautadas pelas diferenças que não poderiam ser hierarquizadas, o que nos evidencia a valorização e o reconhecimento da multiplicidade político-identitária que compõe as escolas. Contudo, foram latentes os danos psicossociais e políticos que as propagandas conservadoras vêm produzindo em suas práticas pedagógicas.
INCLUSÕES DE ALUNOS SURDOS
Authors: Uhmann Silvana Matos , Schwengber Maria Simone Vione
Published: January 2021

A inclusão é um processo repleto de sinalizações que destacam trajetórias, vivências, práticas e subjetivações relacionadas aos alunos surdos em escola regular. Sobre isso, objetivamos problematizar algumas das sinalizações de inclusão desses alunos mediante alguns pressupostos curriculares que tem como fundamento contribuir com a ideia de uma “educação para todos”, perguntando: o que tais pressupostos por meio da homogeneização têm sinalizado sobre os sujeitos surdos e suas escolarizações? Para tanto, optamos pela Análise do Discurso de alguns documentos brasileiros à nível de Ministério da Educação, uma vez que esse movimento de análise nos permite perceber alguns discursos e práticas de “educação para todos” a definir – em menor ou maior grau – os currículos escolares, os quais sinalizam uma recolocação de diferentes modos de discussão da surdez e dos surdos em um contexto mais próximo (ou não) de sua condição de diferença cultural, social e linguística. Ao mesmo tempo, estimulamos alternativas escolares para pensar o surdo enquanto autor e ator de uma cultura minoritária, enquanto usuário de uma língua natural, enquanto grupo heterogêneo que demanda uma educação bilíngue e multicultural, embora pertencentes de políticas curriculares que muitas vezes concedem pouco espaço para isso.
DIFERENÇAS, EDUCAÇÃO INTERCULTURAL E DECOLONIALIDADE
Authors: Candau Vera Maria
Published: January 2021

Estamos vivendo uma situação de crise que afeta diferentes dimensões da vida social e política. No âmbito educacional, confrontam-se posições conservadoras com um intenso movimento, tanto de mobilização social quanto de produção acadêmica, de reconhecimento de diferentes grupos socioculturais inferiorizados e subalternizados na nossa sociedade. Este trabalho se situa nessa perspectiva e está orientado pela perspectiva decolonial e sua inter-relação com a educação intercultural crítica. Além de abordar essa temática, apresenta algumas questões que vêm adquirindo especial relevância hoje. São elas: igualdade-diferença, interseccionalidade, empoderamento, branquitude e ecologia de saberes. Reflete sobre cada uma delas e indica suas implicações para o desenvolvimento dos processos educacionais. Nas considerações finais -insurgindo...- assinala alguns desafios para avançarmos teórica e praticamente nessa direção. Defende que essa perspectiva exige desconstruir uma concepção padronizadora do formato e dos currículos escolares, questionar a colonialidade presente nas culturas escolares, reconhecer inúmeros saberes e práticas insurgentes que realizam professores e professoras no cotidiano escolar e colocar, no centro de nossas buscas para construir uma educação intercultural crítica e decolonial, os grupos sociais subalternizados e inferiorizados na nossa sociedade.
ESTUDO DE CASO
Authors: Salomão Diana
Published: January 2021

Este texto apresenta uma resenha do livro Estudo de caso em pesquisa e avaliação educacional, de autoria de Marli Eliza Dalmazo Afonso de André, uma publicação com pertinente contribuição no âmbito da pesquisa em educação. A obra fornece uma visão geral sobre o estudo de caso qualitativo em educação ao conversar com as principais referências teóricas na temática, utilizando uma linguagem acessível e convidativa ao tratar os essenciais aspectos e desafios que permeiam a pesquisa com estudo de caso qualitativo em educação. A leitura desse livro é de fundamental importância para os iniciados e iniciantes na seara da produção de conhecimento sobre o fenômeno educativo.
Bouveret syndrome - a rare variant of gallstone ileus
Authors: Alves Ana , Louro João , Maia Raquel
Published: January 2021

Bouveret syndrome is a rare cause of gastric outlet obstruction by
passage of gallstone through a fistula between the gallbladder and
proximal gastrointestinal tract, it is considered a proximal form of
gallstone ileus. The clinical presentation is nonspecific, and imaging
plays an important role in the diagnosis of this entity.
AL amyloidosis associated with multiple myeloma revealed by peripheral bilateral polyarthritis: a case report
Authors: Randrianarisoa Rova Malala Fandresena , Rafanomezantsoa Efrasie , Razafindrazaka Hitsy Andraina , Raberahona Mihaja , Andriananja Volatiana , Andriamiharisoa Stéphanie Norotiana , Ralison Fidiarivony , Vololontiana Hanta Marie Danielle , RANDRIA MAMY
Published: January 2021

Amyloid arthropathy is often underdiagnosed. The articular forms of AL
amyloidosis may mimick the rheumatoid arthritis. The presence of
macroglossia should draw attention to chronic polyathralgia.
The volumetric evaluation of sinüs floor augmentation using platelet rich-fibrin and allogenic bone graft mixture with simultaneous dental implant placement in severely atrophic posterior maxilla
Authors: Dereci Omur , Saruhan Nesrin , Tekin Gorkem
Published: January 2021

Objectives: To evaluate the efficacy of the combination of platelet-rich
fibrin (PRF) and mineralized bone allograft on the volume of the new
bone formation in the sinus floor augmentation of the severely atrophic
residual alveolar crest with simultaneous dental implant placement.
Materials and Methods: All clinical and radiological data of patients
treated with sinus floor augmentation using the combination of PRF and
demineralized bone allograft with simultaneous dental implant placement
between 01/04/2013 and 01/03/2020 were retrieved from the archives. The
main inclusion criterion for the study was a residual ridge height less
than 2 mm. The volume of the maxillary sinus cavity was measured by a
software program on pre-operative and post-operative cone beam
computerized tomography (CBCT) sections. The graft volume was calculated
by subtracting pre-operative and post-operative total sinus volume.
Residual and post-operative ridge heights were measured by the software
program on the mid-coronal and mid-sagittal sections of pre-operative
and post-operative CBCT images. Results: Eighteen patients with 26 sinus
augmentations were included in the study. Forty-six dental implants were
placed simultaneously with sinus floor augmentation. The follow-up
periods of cases varied between 19 and 29 months. All cases showed new
bone regeneration on axial, coronal and sagittal sections of
post-operative CBCT data. The mean volume of newly regenerated bone was
calculated as 2.1(±0.9) ml. Post-operative ridge heights was
significantly increased compared to pre-operative residual ridge heights
(p<0.05). There was no sign of a relationship between residual
and post-operative ridge heights (p>0.05). Conclusion: The
PRF and demineralized bone allograft combination used in sinus floor
augmentation may provide healthy new bone that supports simultaneously
placed dental implants in function in the severely atrophic alveolar
crests with a residual ridge height less than 2 mm. Keywords: Sinüs
floor augmentation ; allograft ; cone-beam computed tomography ; dental
implant
Retrieval of an embolized septal occluder with minimal access cardiothoracic surgery.
Authors: Gimpel Damian , Passage Jurgen
Published: January 2021

Atrial septal device embolization within transcather structural heart
disease although rare is life threatening. We present a case of a
15-year-old female who presented with a large 17mm septum secundum
atrial septal defect associated with a left to right shunt and right
heart dilation. The closure with atrial septal occluder (ASO) embolised
into the left ventricle and couldn’t be retrieved by percutaneous
methods. This otherwise healthy young female underwent emergency
retrieval of the ASO via minimal access surgery with a right
anterolateral mini thoracotomy. It’s important to highlight the role of
minimal access surgery for retrieval of embolised percutaneous devices.
Genetic diversity and species diversity weaken plant-soil feedback-mediated coexistence
Authors: Bolin Lana , Lau Jennifer
Published: January 2021

Theory suggests that genetic diversity may influence species coexistence
and that species diversity may influence genotype coexistence by
altering competitive outcomes among species and genotypes, respectively.
However, other coexistence mechanisms such as microbe-mediated
plant-soil feedbacks (PSF), may also contribute. Interspecific PSF
promotes species coexistence when plants grow better with heterospecific
soil microbes than with conspecific microbes, and similarly,
intraspecific PSF promotes genotype coexistence when plants grow better
with heterogenotypic than with congenotypic microbes. Here, we tested
whether genetic diversity influences the strength or direction of
interspecific PSF and whether species diversity influences the strength
or direction of intraspecific PSF. We found that genetic diversity
reduced the capacity for interspecific PSF to promote species
coexistence, and, for one study species, species diversity reduced the
capacity for intraspecific PSF to promote genotype coexistence. These
results suggest that genetic diversity and species diversity may weaken
the ability of PSF to promote coexistence.
Modulating the magnetic properties of BiFeO3 by addition of Ba5TbTi3V7O30
Authors: Doley Hage , Swain Pratap , Panigrahi Anuradha
Published: January 2021

xBiFeO3-(1-x)Ba5TbTi3V7O30 (xBFO-BTTV) ceramic composites with different x
values were prepared by high temperature solid state reaction technique and
sintering at 1073K. The formation of composite structure consisting of BFO
and BTTV phases was confirmed by XRD study. Surface morphology was studied
by scanning electron microscope (SEM) and shows that structure with high
density was obtained in the composite 0.3BFOBTTV whereas the average grain
size increases by increasing x, i.e. by increasing amount of BiFeO3 in the
system. Magnetic measurements were done in a wide temperature range, i.e.
from 10 to 350K, by vibrating sample magnetometer (VSM) and showed that the
magnetization changes by changing the value of x in the composite. BiFeO3 is
antiferromagnetic in nature with weak ferromagnetism. Addition of
Ba5TbTi3V7O30 enhances magnetic properties of the composite and maximal
coercivity and remnant magnetization are obtained in the composite
0.7BFO-BTTV.
Reactive sintering of B4c-TiB2 composites from B4 and TiO2 precursors
Authors: Svec Pavol , Gábrisová Zuzana , Brusilová Alena
Published: January 2021

The effect of sintering temperature in the interval from 1775 to 1850?C on
the density, microstructure, hardness and fracture toughness of ceramic
composites consisting of a boron carbide matrix and titanium diboride
secondary phase was studied. The composites were hot pressed using in situ
reaction between boron carbide and 40 wt.% of titanium dioxide additive. The
samples were hot pressed at different temperatures but for the constant time
of 60min, under the pressure of 35MPa in vacuum of 10 Pa. Both Vickers
hardness and fracture toughness of the composites increased with the
sintering temperature.Maximal hardness of 29.8GPa and fracture toughness of
6.9MPa?m1/2 were achieved for the composite with 29.6 vol.% of titanium
diboride secondary phase sintered at the highest sintering temperature of
1850?C.
Effect of sintering temperature on magnetoelectric coupling in 0.2Ni0.9Zn0.1Fe2O4-0.8Ba0.9Sr0.1TiO3 composite ceramics
Authors: Yu Juan , Bai Lang , Gao Rongli
Published: January 2021

Magnetoelectric composites have attracted much attention due to their
intriguing physical properties and potential applications. They might have
strong magnetoelectric coupling effect above room temperature, but it mainly
depends on the sintering schedule. In this paper,
0.2Ni0.9Zn0.1Fe2O4-0.8Ba0.9Sr0.1TiO3 (NZFO-BSTO) composite ceramics were
prepared by conventional solid sintering method. Effects of the sintering
temperature (1050, 1100, 1150 and 1200?C) on the microstructure, dielectric
and multiferroic properties were investigated in detail. XRD results confirm
that the prepared ceramics show bi-phase structure, which can be indexed as
NZFO and BSTO. No obvious impurity phase was observed when the sintering
temperature is less than 1200?C, indicating that there is no apparent
chemical reaction occuring at the magnetic and ferroelectric interface. All
of the samples show relatively dense and uniform structure. The mean grain
size of the composites increases from 220 to 650 nm when the sintering
temperature increases from 1050?C to 1200?C. The sample ST-1100 has the
best frequency stability of dielectric constant, while it presents the
smallest dielectric loss. All specimens present two dielectric peaks, the
first one is attributed to the diffuse phase transition of BSTO, while
another one generated at higher temperature corresponds to the relaxation
polarization. The sample ST-1100 shows excellent ferroelectric properties,
the value of remnant polarization is about 5.1 ?C/cm2 and the coercive
electric field value is ~20 kV/cm. The ceramics ST-1050 and ST-1200 show
larger leakage current. All samples show paramagnetic behaviour with small
remnant magnetization (~0.3 emu/g) and coercive magnetic field (~30Oe). The
sample ST-1100 has maximum magnetoelectric coupling coefficient of
9.6mV/cm?Oe when the magnetic field is near 1100Oe.
Structure and formation mechanisms of (K0.46Na0.46La0.08)(Nb0.94Sb0.06)O3 particles under hydrothermal conditions
Authors: Li Xingrui , Shi Xinwei
Published: January 2021

(K0.46Na0.46La0.08)(Nb0.94Sb0.06)O3 powders were synthesized via hydrothermal method. The effects of different
reaction conditions on crystal structure, micro-morphology and phase formation were analysed by XRD and
SEM in detail. The results reveal that (K0.46Na0.46La0.08)(Nb0.94Sb0.06)O3 powders with orthorhombic lattice
structure are synthesized at 200?C for 18 h with the total initial alkali concentration of 8mol/l. The average
particle size of synthesized powders is about 500-700 nm, which has regular cubic morphology with uniform
distribution. Moreover, doping with La3+ and Sb5+ inhibits the crystal growth. The phase evolution of the powders
revealed that the hydrothermal synthesis of (K0.46Na0.46La0.08)(Nb0.94Sb0.06)O3 underwent two steps, where
an intermediate product of K4Na4Nb6O19? 9H2O was found in the early stage at 140?C. Based on the results,
the formation mechanism of (K0.46Na0.46La0.08)(Nb0.94Sb0.06)O3 powders was proposed. It can be inferred that
the crystal growth model of (K0.46Na0.46La0.08)(Nb0.94Sb0.06)O3 is dissolution-crystal growth-recrystallization
with the characteristics of layered growth.
Electrical properties of KTa0.65Nb0.35O3 lead-free ceramics
Authors: Gheorghiu Felicia , Asandulesa Mihai , Curecheriu Lavinia
Published: January 2021

In the present study, lead-free KTa0.65Nb0.35O3 ceramics were prepared by
solid state reaction method using successive calcination steps in order to
ensure the complete reaction of the system. The X-ray diffraction analyses of
the prepared ceramics have shown the formation of a perovskite structure
without any secondary phases. The increase of sintering temperature from 1150
to 1200?C leads to a better densification and decreasing of the Curie
temperature (associated with tetragonal-cubic phase transition) closer to the
room temperature, i.e. to 290K. The ceramics sintered at 1200?C exhibits a
high tunability (n = 1.6) and a reduced hysteretic behaviour. Due to its
moderate permittivity, low losses and field dependence permittivity, the
KTa0.65Nb0.35O3 ceramics is suitable candidate for application as tunable
capacitors.
Traditional vs digital communication channels for improving compliance with fixed orthodontic treatment:
Authors: Al-Abdallah Mariam , Hamdan Mahmoud , Dar-Odeh Najla
Published: January 2021

Objectives

To compare the efficacy of traditional and digital communication strategies in improving compliance with fixed orthodontic therapy and to investigate the effect of gender, baseline oral hygiene habits, socioeconomics, and parents' education on orthodontic compliance.

Materials and Methods

Orthodontic patients were randomly allocated to three groups. Group 1 received traditional communication including verbal and written instructions, whereas group 2 and group 3 received, in addition to traditional communication, weekly text messages or e-mails with audiovisual links, respectively. Baseline demographics (age, gender, baseline oral hygiene habits, socioeconomics, and parents' education) as well as compliance indicators (treatment duration, failed appointments, incidence and total number of appliance breakages) were recorded. For statistical analysis, Pearson chi-square, independent t-test, and one-way analysis of variance were used (P < .05).

Results

Of 120 patients (aged 12 to 18 years) recruited, 108 completed the trial (G1 = 37, G2 = 35, G3 = 36). Weekly text messages failed to improve patient compliance. On the other hand, sending weekly e-mails with audiovisual links significantly (P = .014) reduced the incidence of appliance breakage as compared with the control group. Females had a significantly lower incidence of breakage (P = .041) and a fewer total number of breakages (P = .021). Patients from households with high income had significantly better compliance (P < .05). A higher level of parents' education was significantly associated with a lower incidence and total number of breakages (P < .01).

Conclusions

Communication with patients using link-rich e-mails and reminders could improve patient compliance with fixed orthodontic treatment. Female patients, high household income, and high parent education are associated with better compliance with fixed orthodontic treatment.
Patient Health Utility Equations for a Type 2 Diabetes Model
Authors: Neuwahl Simon J. , Zhang Ping , Chen Haiying , Shao Hui , Laxy Michael , Anderson Andrea M. , Craven Timothy E. , Hoerger Thomas J. , Group the Look AHEAD Research
Published: January 2021

Objective: To estimate the
health utility impact of diabetes-related complications in a large,
longitudinal U.S. sample of people with type 2 diabetes.

Research Design and Methods: We
combined Health Utility Index-3 data on patients with type 2 diabetes from the
Action to Control Cardiovascular Risk in Diabetes (ACCORD) and Action for
Health in Diabetes (Look AHEAD) trials and their follow-on studies.
Complications were classified as events if they occurred in the year preceding
the utility measurement; otherwise, they were classified as a history of the complication. We estimated utility decrements
associated with complications using a fixed-effects regression model.

Results: Our sample included
15,252 persons with an average follow-up of 8.2 years and a total of 128,873
person-visit observations. The largest, statistically significant (p < 0.05)
health utility decrements were for stroke (event: −0.109; history: −0.051),
amputation (event: −0.092; history: −0.150), congestive heart failure (CHF;
event: −0.051; history: −0.041), dialysis (event: −0.039), estimated glomerular
filtration rate (eGFR) < 30 mL/min/1.73 m2 (event: −0.043;
history: −0.025), angina (history: −0.028), and myocardial infarction (MI)
(event: −0.028). There were smaller effects for laser photocoagulation, and
eGFR < 60 mL/min/1.73 m2. Decrements for dialysis history,
angina event, MI history, revascularization event, revascularization history,
laser photocoagulation event, and hypoglycemia were not significant (p >=
0.05)

Conclusions: Using a large study sample and a longitudinal design, our estimated health
utility scores are expected to be largely unbiased. Estimates can be used to
describe the health utility impact of diabetes complications, improve cost-effectiveness
models, and inform diabetes policies.
El laboratorio como Herramienta Didáctica para el Aprendizaje de Conceptos y Principios de Física
Authors: Briceño Jesús , Duran Richard , Pereira Ana , Silvio Rutz Silvio
Published: January 2021

Este artículo representa un análisis de investigación que tuvo como objetivo central analizar los procesos pedagógicos llevados a cabo por los docentes en la planificación de la asignatura junto con los estudiantes cursantes de Laboratorio de Física General.  Esto conllevo a una idea secundaria que fue revisar cómo son estudiados los conceptos y teorías fundamentadas en la Electricidad, además de cómo son implementadas en la Educación Universitaria. La investigación se abordó siguiendo la metodología de tipo exploratorio, de campo y documental, lo que permitió hacer dicho diagnóstico. La población de estudio estuvo conformada por dos secciones con un total de veinte (20) estudiantes de Laboratorio de Física General de una institución Universitaria. La técnica aplicada fue un diagnóstico con una serie de dimensiones que permitió conocer cómo se desarrollaban las prácticas de laboratorio en electricidad. Cabe mencionar que se muestra los resultados y análisis más resaltantes de la investigación, donde arrojó diversas perspectivas de abordar un curso de laboratorio siguiendo ciertos parámetros ya predeterminados sin tomando en cuenta la evolución en cuanto a herramientas didácticas y tecnológicas. Para desarrollar dichos resultados se utilizó la herramienta software SPSS Versión 19 para realizar el análisis cuantitativo.
Self-Governance: Internationalization Management of Distinctive Higher Education Towards The World Class University
Authors: Fuadi Djalal , Harsono Harsono , Syah Muhammad Fahmi Johan , Susilo Agus , Suhaili Samsudin , Wahyono Budi
Published: January 2021

The purpose of this study is to describe the management of the internationalization process of higher education in the form of self-governance, strategic plans (vision, mission, and objectives), institutional management, curriculum and learning processes, and quality assurance. The research applied a qualitative approach. The scope of the research is limited to the policy/ legal framework for managing the internationalization of higher education at three Islamic universities in Yogyakarta, comprising the State Islamic University of Sunan Kalijaga Yogyakarta, the Islamic University of Indonesia, and the Muhammadiyah University of Yogyakarta. The data collection was conducted through the techniques of; (1) participant observation, (2) in-depth interviews, and (3) document study. The data analyses used are (1) on-site data analysis and (2) cross-site data analysis. The results of the study showed that the process of self-governance towards higher education institutions with international competitiveness was divided into several stages, namely: determination of the vision, mission, and objectives; development of learning and curriculum which are equivalent to foreign universities; recruitment of foreign students and lecturers; and quality assurance that prioritizes technology, ISO standards, orientation changes, and overall quality assurance. The self-governance accommodates the rapid change and unpredictable education situation due to many factors such as technology, social changes, society health issue, and disruption advanced education in pandemic era. In the context of tertiary management, distinctive competences in the future need to be adapted to distinctive management courtesy. For example, the internalization of speech acts according to local culture is one of the characteristics that can improve the sustainability of higher education.
Syntax Device and Unit Disorder in Children with Mental Retardation: A Neurolinguistic Perpspective on Language Learning Innovations and Progressive Education
Authors: Murthado Fathiaty , Arung Fernandes , Boeriswati Endry , Rahman Silfia
Published: January 2021

This study aimed at obtaining information from neurolinguistic perspective about how children with mental retardation experience language learning by focusing on syntax device and unit disorder. With a qualitative paradigm, this study involved three children with mental retardation aged 17, 12, and 13 years at a special school in East Jakarta. Data in the form of utterances from three children with mental retardation through communication interactions were collected and produced 12 recordings which were then analyzed by apply-ing content analysis technique. The results of this study indicated that there were 151 errors in the form of syntax unit disorder, and the most errors were in the form of the phrase unit, amounting to 61 errors. In terms of syntax device disorder, 37 errors were found, of which the most errors were in intonation defects, amounting to 12 errors. The conclusion of the study is that children with mental retardation experience language disorders in the form of syntax defects because they are influenced by neurological disorders. How-ever, we see that these findings should not be standard benchmarks for mental and neurological disorders, so we argue that the defects in the syntax devices and units exhibited by children with mental retardation should be seen as a componential model of language issue on which their language development should be more focused on the meaning they get from information. In other words, we cannot just stick to the results which state that children with mental retardation have language difficulties but we must focus more on what they can understand as meaningful language to them. Therefore, we recommend trying to approach it with the concept of componential model of language that may be applicable with some technologies as innovative teaching and learning for teachers as well as progressive education for the children with mental retardation for their language learning experiences.
Mathematics and Physics Study and Research Path within two groups of pre-service teacher education
Parcours d'études et de recherche en mathématiques et en physique au sein de deux groupes de formation initiale des enseignants
Authors: Otero Maria Rita , Llanos Viviana Carolina , Arlego Marcelo
Published: January 2021

AbstractIn this paper, we present results of an inquiry based teaching implementation carried out on a teacher training course in the University. The framework of the Anthropological Theory of Didactics (ATD) is adopted, and a co-disciplinary Study and Research Path (SRP) whose generative question requires studying physics and mathematics together is carried out by N=25 training teachers of Mathematics at University. Some conclusions concerning the conditions, restrictions and relevance of introducing the RSC in teachers training courses at the university are performed.Keywords: Study and Research Path (SRP), Trainee teachers.RésuméDans ce travail nous présentons des résultats d'un enseignement développé dans un cours de formation d’enseignants de mathématiques à l'Université. On adopte le cadre théorique de la Théorie Anthropologique du Didactique (TAD) pour développer un Parcours d'Étude et Recherche (PER) avec N=25 enseignants de Mathématiques en formation à l'université. La question génératrice demande l’étude conjointe des mathématiques et de la physique. Nous faisons quelques remarques liées aux conditions, restrictions et à l'importance des PER dans la formation des enseignants à l’université.Mots-clés : Parcours d'étude et de recherche (SRP), Enseignants stagiaires.