bluuebunny/crossref_metadata_2025 huggingface dataset:
Ground-roll attenuation using polarization characteristics of complex vector seismic data
Authors: Liu Sheng , Yuan Yijun , Cheng Zhaohui , Wei Tao
Published: September 2023

As the primary source of noise in multicomponent seismic data, ground roll substantially contaminates the effective signals and reduces the signal-to-noise ratio of the seismic data. Therefore, ground-roll attenuation is an essential step in multicomponent seismic data processing. In this study, we develop a method to attenuate ground roll using a filtering method that preserves the polarization characteristics of the multicomponent seismic data. In this method, radial and vertical components of the multicomponent seismic data are combined into complex vector seismic data and then transformed from the t- x domain into the [Formula: see text]- f- v domain using S- and Radon transforms. The reciprocal ellipticity is calculated in the [Formula: see text]- f- v domain, and a polarization filter is designed according to the parameters of time, frequency, apparent velocity, and reciprocal ellipticity. Through polarization filtering, the ground roll of the multicomponent seismic data can be effectively attenuated. After performing the inverse Radon and S-transforms, the radial and vertical components of seismic data are obtained in the t- x domain without the ground roll. Tests on synthetic and field seismic data indicate that our method effectively attenuates the ground roll from the multicomponent data, providing better results than the established conventional methods.
Liaison psychiatry services in Scotland, 2022: online survey of NHS health boards
Authors: Shankar Prakash , Smith Murray
Published: September 2023

Aims and method

Liaison psychiatry services have seen significant developments the UK. Regular surveys of liaison psychiatry in England have contributed to this, but it has not attracted the same interest in Scotland, with only a mention and no commitments in the Scottish Government's Mental Health Strategy. There have been no comprehensive surveys in Scotland and this study was an attempt to explore provisioning of services. A questionnaire was sent to liaison psychiatry services in the mainland Scottish National Health Service (NHS) health boards.

Results

Responses obtained from all 11 boards revealed considerable variation in service provisioning. Services provided through acute rather than mental health directorates seem significantly better resourced.

Clinical implications

Liaison psychiatry services can improve care for patients but require adequate resources to do so. There are limited quality standards for Scottish liaison services, unlike other devolved nations, leading to variation in provision. This survey will assist in designing quality standards for liaison psychiatry in Scotland.
Dihydrofolate reductase activity controls neurogenic transitions in the developing neocortex
Authors: Saha Sulov , Jungas Thomas , Ohayon David , Audouard Christophe , Ye Tao , Fawal Mohamad-Ali , Davy Alice
Published: September 2023

One-carbon/folate (1C) metabolism supplies methyl groups required for DNA and histone methylation, and is involved in the maintenance of self-renewal in stem cells. Dihydrofolate reductase (DHFR), a key enzyme in 1C metabolism, is highly expressed in human and mouse neural progenitors at the early stages of neocortical development. Here, we have investigated the role of DHFR in the developing neocortex and report that reducing its activity in human neural organoids and mouse embryonic neocortex accelerates indirect neurogenesis, thereby affecting neuronal composition of the neocortex. Furthermore, we show that decreasing DHFR activity in neural progenitors leads to a reduction in one-carbon/folate metabolites and correlates with modifications of H3K4me3 levels. Our findings reveal an unanticipated role for DHFR in controlling specific steps of neocortex development and indicate that variations in 1C metabolic cues impact cell fate transitions.
Activation of respiratory-related bursting in an isolated medullary section from adult bullfrogs
Authors: Saunders Sandy E. , Santin Joseph M.
Published: September 2023

Breathing is generated by a rhythmic neural circuit in the brainstem, which contains conserved elements across vertebrate groups. In adult frogs, the ‘lung area’ located in the reticularis parvocellularis is thought to represent the core rhythm generator for breathing. Although this region is necessary for breathing-related motor output, whether it functions as an endogenous oscillator when isolated from other brainstem centers is not clear. Therefore, we generated thick brainstem sections that encompass the lung area to determine whether it can generate breathing-related motor output in a highly reduced preparation. Brainstem sections did not produce activity. However, subsaturating block of glycine receptors reliably led to the emergence of rhythmic motor output that was further enhanced by blockade of GABAA receptors. Output occurred in singlets and multi-burst episodes resembling the intact network. However, burst frequency was slower and individual bursts had longer durations than those produced by the intact preparation. In addition, burst frequency was reduced by noradrenaline and μ-opioids, and increased by serotonin, as observed in the intact network and in vivo. These results suggest that the lung area can be activated to produce rhythmic respiratory-related motor output in a reduced brainstem section and provide new insights into respiratory rhythm generation in adult amphibians. First, clustering breaths into episodes can occur within the rhythm-generating network without long-range input from structures such as the pons. Second, local inhibition near, or within, the rhythmogenic center may need to be overridden to express the respiratory rhythm.
Experiencing short heat waves early in development changes thermal responsiveness of turtle embryos to later heat waves
Authors: Breitenbach Anthony T. , Marroquín-Flores Rosario A. , Paitz Ryan T. , Bowden Rachel M.
Published: September 2023

Although physiological responses to the thermal environment are most frequently investigated using constant temperatures, the incorporation of thermal variability can allow for a more accurate prediction of how thermally sensitive species respond to a rapidly changing climate. In species with temperature-dependent sex determination (TSD), developmental responses to incubation temperature are mediated by several genes involved in gonadal differentiation. Kdm6b and Dmrt1 respond to cool incubation temperatures and are associated with testis development, while FoxL2 and Cyp19A1 respond to warm incubation temperatures and are associated with ovary development. Using fluctuating incubation temperatures, we designed two studies, one investigating how conflicting thermal cues affect the timing of commitment to gonadal development, and another investigating the rapid molecular responses to conflicting thermal cues in the red-eared slider turtle (Trachemys scripta). Using gene expression as a proxy of timing of commitment to gonadal fate, results from the first study show that exposure to high amounts of conflicting thermal cues during development delays commitment to gonadal fate. Results from the second study show that Kdm6b splice variants exhibit differential responses to early heat wave exposure, but rapidly (within 2 days) recover to pre-exposure levels after the heat wave. Despite changes in the expression of Kdm6b splice variants, there was no effect on Dmrt1 expression. Collectively, these findings demonstrate how short exposures to heat early in development can change how embryos respond to heat later in development.
Evaluating the role that Care Groups play in providing breastfeeding and infant feeding support at community level: a qualitative study in Dedza district in Malawi
Authors: Pieterse Pieternella , Walsh Aisling , Chirwa Ellen , Chikalipo Maria , Msowoya Chimwemwe , Mambulasa Janet , Matthews Anne
Published: September 2023

Background: Promoting exclusive breastfeeding is a key nutrition policy objective in Malawi. This study assesses the role that care group volunteers (CGVs) play in providing breastfeeding and infant feeding support at community level. Care groups are a peer-to-peer learning approach, which has been part of Malawi’s nutrition policy since 2012, yet its efficacy and its role within community-level nutrition support remains under-researched.

Methods: In July 2021, we conducted 60 qualitative semi structured interviews in Dedza District with village leaders, Health Surveillance Assistants (HSAs), CGVs and district health officials, mothers with at least one child under two (n=36) who were randomly selected, and (purposively selected) mothers who had a child who was born prematurely or with low birthweight. The research was conducted in one of two care group programme implementation areas, or in several villages where care group interventions had not taken off.  All interviews were recorded, transcribed and translated into English and then analysed using qualitative data analysis software. Thematic analysis was used to elicit key themes.

Results: Only eight out of 26 women in locations where care groups were active reported receiving breastfeeding support from care groups. All mothers reported receiving breastfeeding support at the health facility where they delivered their baby(ies) (n=36) and some (n=24) also at ante-natal care clinics. Where care groups were active, 18 out of 26 interviewees reported interacting with them, mostly during cooking demonstrations or receiving home visits. Little interaction was observed by interviewees between HSAs and CGVs (n=1) and no evidence suggested coordination between HSAs and CGVs around (vulnerable) newborn baby visits, as described by one HSA.

Conclusions: This research shows that care groups, despite being well-known, remain an under-appreciated and un-integrated volunteer cadre. Policy reform in relation to care groups in Malawi could improve care group efficacy.
Bulgarian culture and space in the religious context
Authors: Velinov Ivo Iv.
Published: September 2023

In this contribution I apply the semiotic method of Juri Lotman to a specific physical location – a significant Bulgarian religious monastery, in order to elucidate the Bulgarian metahistorical tradition. Any process of communication with a religious text involves a complex relationship with the reader. A readership image hidden in the Bulgarian religious text has played a central role for many generations; therefore, in addition to analysing a physical location, the method of communication in the area of “cultural centrality” has also been examined. The discussion focuses on a specific metahistorical text, the Testament of John of Rila, and the ways in which it interacts with important geographical and cultural areas and their hidden dimensions of “semiotic spheres”. The Testament is a part of Bulgarian cultural legacy and its role in the area of the “extra-cultural” and “cultural periphery” is remarkable.
Gilbert’s syndrome as a protection against the development of other diseases
Authors: Miazga Dominika , Maziarczyk Alicja , Surdacka Laura , Blicharz Monika , Bartosik-Zielińska Diana
Published: September 2023

Introduction and purpose Gilbert's syndrome is a condition caused by a mutation in the gene responsible for the enzyme UDP-glucuronosyltransferase 1A1, which conjugates bilirubin in hepatocytes. Its less efficient functioning results in disorder of bilirubin metabolism which leads to increased level of this compound. It has been observed that there is interesting correlation between elevated levels of bilirubin and the risk of developing certain diseases in patients with this condition. The aim of this review is to understand the correlation between elevated bilirubin levels and the risk of developing selected diseases in individuals with Gilbert's syndrome and how to use this knowledge in innovative therapeutic options. 

State of knowledge Bilirubin was considered a non-functional waste product of heme breakdown, used to be seen as a concerning indicator of liver disease or even a potentially harmful substance for the nervous system. However, lately it turns out that bilirubin has strong antioxidant properties, which help to scavenge free radicals and inhibit lipid oxidation. Recent studies have shown that even slightly elevated levels of bilirubin in the blood, such as those commonly found in individuals with Gilbert's syndrome may protect these patients against diseases associated with increased oxidative stress, an overactive immune response and metabolic dysfunction. 

Conclusions As a result, individuals with Gilbert's syndrome are observed to have a lower risk of developing diseases related to oxidative stress, such as cardiovascular diseases and cancer. In these patients mortality rate compared to the population with normobilirubinemia is decreased. Based on available studies, it has also been concluded that inducing mild hyperbilirubinemia - iatrogenic Gilbert's syndrome - using appropriate substances may have health benefits.
Sueños de una consciencia colectiva para Noruega: el Friluftsliv.
Authors: Andrés Medina Javier
Published: September 2023

Asumiendo la dificultad de definir los rasgos esenciales de una identidad colectiva, este artículo explora como hipótesis que algunos de esos rasgos son constructos (políticos, ideológicos, culturales, etc.), pero que hay otros que podrían, por un instante, ser causa de reconocimiento de una diferenciación en la globalización. En vez de determinar qué pueda ser una identidad desde métodos antropológicos, este artículo se adentraría en delinear un perfilado, que no pretende ser impositivo, pero sí propositivo, para lo que podría llamarse una forma de vida, desde la literatura y la arquitectura. Para ello, se tomará el concepto “friluftsliv”, una suerte de descriptor para una conciencia colectiva, la noruega, que expresa la preservación del medioambiente y un vivir de manera muy vinculada a la naturaleza. Se encuentra inicialmente ese término en las obras Henrik Ibsen, conocido por establecer una estrecha relación con los sueños, operando en el plano del inconsciente para la creación de sus obras. Haciendo derivar de ese concepto la conocida Deep Ecology, liderada por Arne Naess, se abre una segunda hipótesis sobre el giro nacionalista de una sociedad hasta hace pocos años reconocida en otro de sus rasgos identitarios como abierta y receptiva. Así, se examina el caso de los memoriales de los atentados de 2011, siendo la arquitectura el foco analítico para estudiar el extremismo político conservador en Noruega, concluyendo que es crucial entender las manifestaciones del inconsciente, supuestamente a salvo de injerencias, como la que proveería el “friluftsliv”, que son ya la vía abierta para las manipulaciones identitarias.
La paradoja de la pérdida de biodiversidad y la aparición de nuevas formas de vida, ligadas a efectos antrópicos.
Authors: Rey Rocha Jesús , Velasco Martín Marta , P. Martín, María
Published: September 2023

La crisis ambiental y ecológica actual acelerada y/o causada por actividades humanas, paradójicamente favorece la proliferación y diversificación de formas de vida. Esta crisis sistémica reafirma el estrecho vínculo que aún mantienen los seres humanos con el entorno natural y con el resto de formas de vida. Teniendo en cuenta la influencia de las arquitecturas de la naturaleza y de los seres vivos, las arquitecturas natural y artificial o humana, en la conformación de entornos para el establecimiento de la vida, este artículo plantea una reflexión sobre el desarrollo y la evolución de las formas de vida, ligados a los espacios y condiciones en las que existen y en adaptación a los nuevos entornos. Además, pretende reflexionar sobre el papel del ser humano, como especie clave, en la crisis ecológica y la coevolución de las distintas formas de vida que habitan el planeta Tierra. Nuestra propuesta plantea que las instituciones, la política y la gobernanza han de tener un cometido principal en la configuración de las respuestas a los desafíos que se nos plantean. Igualmente, considera que la ciudadanía puede adquirir una gran relevancia en la modelación y conservación de los ecosistemas que habitamos a través de la acción cotidiana, de la participación ciudadana y política, de la inteligencia colectiva apoyada por la ciencia y el conocimiento experto, del uso de las posibilidades y la potencia que permiten las redes sociales y del ejercicio de la democracia, un derecho y una herramienta para mejorar las condiciones de nuestra propia vida.
Efficient Scenario Generation for Heavy-Tailed Chance Constrained Optimization
Authors: Blanchet Jose , Zhang Fan , Zwart Bert
Published: September 2023

We consider a generic class of chance-constrained optimization problems with heavy-tailed (i.e., power-law type) risk factors. As the most popular generic method for solving chance constrained optimization, the scenario approach generates sampled optimization problem as a precise approximation with provable reliability, but the computational complexity becomes intractable when the risk tolerance parameter is small. To reduce the complexity, we sample the risk factors from a conditional distribution given that the risk factors are in an analytically tractable event that encompasses all the plausible events of constraints violation. Our approximation is proven to have optimal value within a constant factor to the optimal value of the original chance constraint problem with high probability, uniformly in the risk tolerance parameter. To the best of our knowledge, our result is the first uniform performance guarantee of this type. We additionally demonstrate the efficiency of our algorithm in the context of solvency in portfolio optimization and insurance networks.

Funding: The research of B. Zwart is supported by the NWO (Dutch Research Council) [Grant 639.033.413]. The research of J. Blanchet is supported by the Air Force Office of Scientific Research [Award FA9550-20-1-0397], the National Science Foundation [Grants 1820942, 1838576, 1915967, and 2118199], Defense Advanced Research Projects Agency [Award N660011824028], and China Merchants Bank.
ENSINO DE BIOLOGIA EM COLEÇÕES CIENTÍFICAS: CONCEITOS E MÉTODOS BASEADOS NA EXPERIÊNCIA EM HERBÁRIO
Authors: Iglesias Diego Tavares , Fonseca Rúbia Santos
Published: September 2023

Coleções científicas biológicas são espaços comumente inseridos em instituições de pesquisa e atuam suporte as pesquisas científicas voltadas à biodiversidade. Apesar da riqueza de amostras biológicas presentes nestes espaços, o potencial de ensino de biologia é pouco explorado, tanto pelas limitações técnicas e infraestruturais, quanto pela deficiência de temáticas que possam ser trabalhadas com o uso dos recursos presentes nestes espaços. Atividades educativas envolvendo amostras biológicas são geralmente reservadas aos museus de história natural, porém, estes espaços são limitados no território brasileiro. Baseado nas experiências extensionistas do Herbário Norte Mineiro (MCCA), este trabalho visa apresentar conceitos biológicos que podem ser trabalhados em coleções científicas, como os herbários, além de sugerir metodologias para a inserção destas atividades de ensino e extensão na realidade das coleções científicas brasileiras.
O ESTADO DA QUESTÃO SOBRE FEIRAS DAS CIÊNCIAS NA PERSPECTIVA INTERDISCIPLINAR
Authors: Pacheco Mesquita Tauana Pacheco , Rodrigues de Araujo Rafaele Rodrigues
Published: September 2023

O presente trabalho tem como objetivo investigar o que a comunidade científica do Encontro Nacional de Pesquisa em Educação em Ciências (ENPEC) discute sobre as Feiras e Mostras Científicas na perspectiva interdisciplinar, no período de 2000 a 2020, por meio da metodologia da pesquisa do Estado da Questão. Entendemos que Feiras e Mostras das Ciências são excelentes espaços para envolver os estudantes na (re)construção do seu conhecimento, além de propiciar o protagonismo, a autonomia, a aproximação entre professores e alunos, a interação entre as diferentes áreas do conhecimento, além de instigar a curiosidade e a criatividade dos estudantes. A partir da investigação e da análise realizada, foram encontrados 35 artigos que integraram três categorias emergentes: Feiras das Ciências como espaços de Interação e Formação de Professores; Divulgação Científica nas Feiras das Ciências contextualizadas; Avaliação colaborativa nas Feira das Ciências. Percebemos que a interdisciplinaridade como um movimento articulador das Feiras das Ciências e elo de união entre as categorias emergentes. Além disso, entendemos que as Feiras das Ciências por serem um espaço difundido nos ambientes escolares e por possuírem uma metodologia flexível, aproximam diferentes sujeitos e áreas do conhecimento, oportunizando a formação de professores, pautada na alfabetização e divulgação científica, num processo de avaliação colaborativa.
O ESPAÇO, O COTIDIANO E A ESCOLA: UM REPENSAR PELA DEMOCRACIA
Authors: De Vasconcelos Tiago Santos
Published: September 2023

Pensar o espaço, desde uma perspectiva escolar, demanda um exercício crítico e teórico complexo envolvendo a dimensão cotidiana da vida. Neste contexto, o objetivo deste breve estudo é apontar caminhos para que o espaço, enquanto categoria do pensamento e realidade prática, seja entendido nos estudos escolares geográficos como portador da ideia de referência para o ser humano, condição de existência do próprio ser. Este objetivo nos impele a consideração da intrínseca relação espaço-tempo, categorias que necessariamente precisam ser encaradas integradamente e que perfazem a constituição da dimensão cotidiana. Por conseguinte, abre-se caminho para a possibilidade do vir-a-ser, ou seja, a oportunidade de os sujeitos realmente serem no espaço. Este estudo lançou luz sobre a ideia de que o trabalho pedagógico em torno do conceito de espaço, atrelado quase que exclusivamente à sua dimensão absoluta, assegura à disciplina escolar Geografia, em alguma medida, uma posição de polo obscurantista das relações sociais, conduzindo ações não-discutidas em prol de uma organização social alienada. Portanto, a devida compreensão do espaço pode incentivar o desenvolvimento de um sujeito político subversivo. A Geografia escolar, por seu turno, desde uma perspectiva críticas e tornam parte de nosso problema, estruturando uma racionalidade de tom mais conformista, nos impondo o dever de pensar diariamente em alternativas às alternativas.
AS FORMAS DE CRESCIMENTO E O ZONEAMENTO MORFOLÓGICO-FUNCIONAL DA CIDADE MÉDIA DE ITAJUBÁ (MINAS GERAIS).
Authors: De Andrade Alexandre Carvalho , Da Cunha Rogério Coli
Published: September 2023

Uma cidade apresenta três formas de crescimento, o populacional, a expansão de sua área urbana, e a verticalização. Entretanto, devido as condições econômicas, socioespaciais, políticas e ambientais que se interatuam em um espaço geográfico, as formas de crescimento se manifestam de variadas maneiras nas mais diversas cidades, contribuindo, inclusive, para a formação de áreas com diferentes paisagens, condições socioeconômicas e funcionalidades em seu interior. No contexto de uma cidade média, o papel de intermediário em uma rede urbana, faz com que moradores dos espaços urbanos e rurais de sua área de influência a procure para o trabalho, o entretenimento e o consumo de bens e serviços. Este artigo tem como objetivo demonstrar os processos de crescimento que ocorreram em Itajubá, entre 1980 e 2019, para, posteriormente, realizar uma proposta de zoneamento morfológico-funcional desta cidade média localizada no Sul de Minas.
A GEOGRAFIA POLÍTICA DA VIGILÂNCIA NAS REDES SOCIAIS
Authors: Ribeiro Miguel Angelo Campos , Franco da Silva Carlos Alberto
Published: September 2023

A acumulação capitalista requer revolução tecnológica, regulação jurídica da força de trabalho, hábitos territorializados, mercantilização da natureza e da vida, fluidez sociotécnica dos territórios e lugares na divisão socioespacial do trabalho e controle do indivíduo e sociedade. Nesse artigo, o objetivo é observar a geografia política da acumulação neoliberal por espoliação das corporações Big Tech por meio da vigilância da experiência de vida para fins de grilagem de dados pessoais e coletivos. A metodologia se apoia no resgaste de bibliografia acerca da revolução tecnoinformacional em tempos de neoliberalismo e das redes sociais. A conclusão a que se chega observa o uso das redes sociais como instrumento sociotécnico-informacional de controle de indivíduos através da fé no progresso e na servidão voluntária aos esquemas de acumulação de capital das Big Tech por meio da espoliação da experiência da vida no ciberespaço.
ESTUDO SOBRE TECNOLOGIAS SOCIAIS E TURISMO COMUNITÁRIO: O CASO DA COMUNIDADE COROCA, SANTARÉM, PA
Authors: Assis Giselle Castro de
Published: September 2023

Este estudo teve como objetivo principal investigar a existência de tecnologias sociais (TS) em iniciativas de turismo protagonizadas por populações locais, analisando o papel da autonomia comunitária na construção de TS. A metodologia teve um caráter exploratório em relação ao tema e foi desenvolvida através de pesquisa bibliográfica sobre as categorias TS, e TS e turismo. Também foram realizadas buscas sobre TS e turismo em bases de dados sobre TS. A pesquisa de campo na Comunidade Coroca (Santarém, PA) integra a metodologia como um caso de Turismo Comunitário no qual se desenvolve TS de forma autônoma. O resultado desse estudo indica que existem duas práticas de TS no turismo brasileiro: a primeira refere-se à ausência de participação da comunidade na concepção da tecnologia, comprometendo a autonomia da população local; a segunda é viabilizada pela própria autonomia comunitária, que é capaz de elaborar soluções para a efetiva transformação social.
Empretecer o currículo: por uma comunidade escolar [e não-escolar] antirracista
Authors: Silva Luce Elena Diogo da , Rosa Sanny Silva da
Published: September 2023

O entendimento da escola como uma comunidade amorosa nos provoca a imaginar e produzir um currículo antirracista. Empretecer o currículo significa quebrar estereótipos e produzir outros imaginários sobre a população negra, seja brasileira ou afrodiaspórica. Se a representação negra no currículo tradicional é marcada pela vitimização, submissão, subalternização ou pela exotização dessa população, reforçadas pelas datas comemorativas, a Lei 10.639/03 possibilita forjar outras representações, emancipatórias. Por ocasião dos vinte anos de promulgação dessa lei, pretende-se discutir a possibilidade de ‘empretecer’ o currículo para construir uma comunidade escolar [e não-escolar] antirracista. Desde uma perspectiva epistêmica decolonial, o texto explora e se ancora nas proposições de Bell Hooks, inspiradas nas ideias freirianas, para pensar um currículo antirracista.
Exercícios para uma formação docente inventiva com o cinema e a psicologia
Authors: Omelczuk Fernanda
Published: September 2023

O artigo apresenta proposições e resultados de pesquisaspara o campo da formação docente inventiva desenvolvidos com a arte cinematográfica junto à disciplina de psicologia da educação, a qual é oferecida para diferentes cursos de licenciaturas. Para tanto, são definidos os fundamentos epistemológicos que sustentam a proposta de uma formação inventiva, além de referências e pesquisas sobre o ensino de psicologia e conteúdos que integram a ementa dessa disciplina nas licenciaturas, destacando modos de relação com esses saberes e suas políticas cognitivas. Em seguida, são apresentados os filmes O garoto selvagem (1969), de François Truffaut, e Jonas e o circo sem lona (2015), de Paula Gomes, que intensificam temas clássicos do campo psicológico para a formação de professores. Posteriormente, são expostos dois exercícios de criação cinematográfica realizados com esses filmes e as contribuições dessas atividades para uma formação docente inventiva com o cinema e a psicologia.
Multiletramentos com tecnologias digitais da informação e comunicação
Authors: Nascimento de Carvalho Daniel Bramo , Nunes Linhares Ronaldo
Published: September 2023

O presente trabalho visa construir uma reflexão de como as práticas da pedagogia dos multiletramentos fundamentada no “New London Group” podem contribuir para a construção de novas práticas no espaço escolar que se relacionem com as nossas competências em ler o mundo a partir das mídias. Assim como, compreender como tais processos podem possibilitar a autonomia e libertação do sujeito para um posicionamento crítico diante das lógicas dominantes. Bifo (2003), Lipovetsky (2011), Freire (2014), Hall (2013), Martin-Barbeiro (1997; 2000; 2007) e Cope e Kalantzis (2009) e Buckingham (2010) são autores que auxiliam na reflexão de uma sociedade digitalizada em que os sujeitos participam ativamente das transformações cognitivas que desterritorializam as práticas socioculturais e modificam as relações com a sociedade e os dispositivos comunicativos. Desta forma, foi possível inferir que é preciso remodelar as estratégias de ensino e aprendizagem, considerando as fissuras provocadas pela dinâmica da sociedade digital, e que as novas práticas que envolvem os multiletramentos, podem contribuir na renegociação de práticas pedagógicas que considerem os espaços que os sujeitos ocupam na sociedade, na cultura e na escola, transformando a educação em um processo autônomo e em um instrumento de libertação.
Entropy generation analysis technique for labyrinth seals – Part 1
Authors: Zhang Hehui , Zong Yutong , Li Kang , Zuo Qingsong
Published: September 2023

Entropy generation analysis – the subject of the study described in this feature – is a potential analytical technique that is being developed to provide a useful way of enhancing the functionality of labyrinth seals and perfecting their structure. Compared with conventional techniques, the approach aims to provide a more fundamental analysis of the energy dissipation phenomenon in labyrinth seals and a quantitative description of the amount of energy lost in various flow regions. The first part of this article, which appears here, mainly looks at the approach and numerical results of the associated research. The second instalment, which will appear in a forthcoming issue of Sealing Technology, will continue coverage by explaining how the technique may be applied.
Multi-objective optimization of process parameters during friction stir welding of similar AA6061 using MOORA
Authors: UMAMAHESWAR RAO P. , VIJAY PRAVEEN D.
Published: September 2023

This work is an attempt to select the optimum process parameters for friction stir welding of similar AA6061 aluminum alloy based on multiple criteria decision-making approach. The friction stir welding experiments have been conducted according to the orthogonal L9 array and the chosen input parameters are tool rotational speed, feed, and tilt angle. The responses measured are tensile strength, hardness, and % of elongation of welded joint. The multi-criteria decision-making technique namely multi-objective optimization based on the ratio analysis (MOORA) is used to find the optimum process parameters combination. The optimum conditions are tool rotational speed of 1120 rpm, feed of 30 mm/rev and tilt angle at 1 o.
Comparative analysis of 2D simulations and isentropic equations for compressible flow in experimental nozzles
Authors: TOLENTINO San Luis
Published: September 2023

Experimental studies for supersonic airflow in different supersonic nozzle geometries are recurrent, and the turbulence of the flow can be reproduced with the CFD tool by applying the RANS model and suitable turbulence models. The objective of this investigation is to carry out a comparative analysis of 2D numerical simulation curves for viscous flow with averaged data against equation curves for quasi-one-dimensional isentropic flow, for three experimental supersonic nozzle geometries that are used in the laboratory, for the flow condition without the presence of shock waves in the divergent. For the numerical simulations, three computational domains were discretized with structured grids, the
Spalart-Allmaras turbulence model was used, and the Sutherland's law equation was used for the viscosity as a function of temperature. The results of the curve trajectories for Mach number, pressure and temperature obtained with averaged data from the 2D simulations are close to the curves of the analytical and empirical equations for isentropic flow. It is concluded that the numerical error of the total temperature for the planar nozzle with 𝛼𝛼 = 11.01° and NPR = 8.945 reports 0.008%; for the conical nozzle with 𝛼𝛼 = 15° and NPR = 14.925 it reports 1%; and, finally, for the conical nozzle with 𝛼𝛼 = 4.783° and NPR = 7, it reports 0.04%.
Pushing the Integrated Employment Agenda: Employment Systems Partners and the High-Performing States Model
Authors: Winsor Jean E. , Landa Cady , Hall Allison Cohen , Narby Caro , Kamau Esther
Published: September 2023

This article summarizes data collected from key informants in Iowa, Maryland, and Oklahoma regarding efforts to support integrated employment for people with intellectual and developmental disabilities (IDD). We highlight features that contribute to the effectiveness of collaborative structures that have resulted in each state's success in achieving integrated employment outcomes for individuals with IDD across three state systems: IDD, vocational rehabilitation, and education. We present these features using the seven elements of the High-Performing States Employment Model. These elements have been found to be important in achieving higher rates of competitive integrated employment outcomes for people with IDD.
Participation and Companions for Socially Inclusive Community Activities by U.S. Adults With Intellectual and Developmental Disabilities
Authors: Stancliffe Roger J. , Pettingell Sandra L. , Houseworth James , Tichá Renáta
Published: September 2023

We investigated socially inclusive participation in mainstream community groups and religious services by U.S. adults with intellectual and developmental disabilities using weighted secondary analyses of 2018–2019 National Core Indicators data. Overall, 34.4% participated in community groups and 42.4% in religious services. Some 45.0% had an unmet desire for community-group participation, whereas most (75.0%) attended a religious service as often as preferred. The type of companion varied by living arrangements and age group. Attending community groups and religious services were each strongly associated with better friendship outcomes but were not related to loneliness. The large unmet demand for community-group participation reveals a major gap. The friendship outcomes underline the benefits of socially inclusive community participation.
Light trapping using a dimer of spherical nanoparticles based on titanium nitride for plasmonic solar cells
Authors: Akhtary Nowshin , Zubair Ahmed
Published: September 2023

Light-trapping mechanisms with plasmonics are an excellent way to increase the efficiency of photovoltaics. Plasmonic dimer-shaped nanoparticles are effective in light absorption and scatterings, and there is hardly any research on dimer TiN nanoparticle-based PV. This paper demonstrated that titanium nitride could be a suitable substitute for other plasmonic materials in the visible and near-infrared spectrum. We designed a TiN-based spherical dimer plasmonic nanoparticle for photovoltaic applications. We conducted comparison analyses with the metals Ag, Au, and Al to ascertain the performance of TiN as a plasmonic material. Silicon had an average absorption power of ∼19%, and after incorporating TiN nanoparticles, the average absorbed power increased significantly to ∼75% over the whole spectral range. TiN dimer nanoparticle had the highest absorption cross-section, Q
ab
value ∼6.2 W/m2 greater than Ag, Au, and Al had a fraction of light scattered into the substrate value greater than Au, Al and comparable to Ag. TiN dimer exhibited better absorption enhancement, g for the whole spectral range than Ag, Au, and Al dimers for a radius of 15 nm with a peak value greater than 1. The maximum optical absorption efficiency of the plasmonic TiN nanostructures was ∼ 35.46%.
Double harmonic mode-locking in soliton fiber ring laser acquired through the resonant optoacoustic coupling
Authors: Ribenek Valeria , Itrin Pavel , Korobko Dmitry , Fotiadi Andrei
Published: September 2023

High repetition rates of ultrafast fiber lasers are crucial for their various applications, such as optical fiber telecommunications, microwave photonics, frequency metrology, and the high-speed optical processing. Passive harmonic mode-locking (HML) of a soliton fiber laser to optoacoustic resonance (OAR) allows for high pulse stability and low timing jitter. However, the pulse repetition rate (PRR) of such lasers is limited to ~1 GHz for standard fibers and ~2.5 GHz for photonic crystal fibers due to the available acoustic modes. Here, we address these limitations by demonstrating a soliton fiber laser built from standard fiber components and subjected to double harmonic mode-locking (DHML). Initially, the laser is adjusted to operate at 15-th harmonic of its cavity, enabling OAR at ~200 MHz, but is then driven to operate at a high harmonic of the OAR frequency, reaching ~12 GHz. This breakthrough is made possible through controllable optoacoustic interactions in a short, 50 cm segment of unjacketed cavity fiber. We propose that the precise alignment of the laser cavity harmonic and fiber acoustic modes leads to a long-lived narrow-band acoustic vibration. This vibration sets the pace for pulses circulating in the cavity by suppressing modes that do not conform to the Vernier principle. The surviving modes, equally spaced by the OAR frequency, in cooperation with the gain depletion and recovery mechanism, facilitate the formation of stable high-frequency pulse sequences, enabling DHML. In this process, the OAR rather than the laser cavity defines the elementary step for laser PRR tuning. Throughout the entire PRR tuning range, the soliton fiber laser exhibits enhanced stability, demonstrating a better than ~40 dB supermode suppression levels and picosecond pulse timing jitter.
Hubungan Pengetahuan Ibu tentang Makanan Pendamping-Air Susu Ibu dengan Status Gizi pada Anak Usia 6-24 Bulan
Authors: Br. Pasaribu Lary Anceli , Yati Sri , Do Toka Wahyunita
Published: September 2023

Latar belakang. Prevalensi kematian balita di dunia sekitar 45% dikarenakan masalah gizi. Salah satu upaya untuk mencegah terjadinya permasalahan gizi adalah pemberian Makanan Pendamping Air Susu Ibu pada anak dengan benar. Upaya ini dipengaruhi oleh beberapa faktor, salah satunya adalah tingkat pengetahuan ibu.Tujuan. Untuk mengetahui hubungan tingkat pengetahuan ibu tentang Makanan Pendamping Air Susu Ibu dengan status gizi pada anak di Puskesmas JambulaMetode. Penelitian observasional dengan pendekatan potong lintang. Sampel penelitian adalah ibu yang memiliki anak usia 6-24 bulan. Data yang di peroleh dianalisa dengan metode Fisher Freeman Halton Exact Test. Kuesioner yang digunakan berupa pernyataan terbuka tentang pengetahuan ibu sebanyak 30 nomor.Hasil. Berdasarkan 64 yang diteliti, terbanyak ditemukan ibu dengan pengetahuan baik, yaitu 59 (92,2%), status gizi anak terbanyak ditemukan pada kategori gizi baik, yaitu 42 (65,6%). Hasil analisis bivariat diperoleh nilai p=0,505. Hal ini menunjukan bahwa tidak terdapat korelasi antara tingkat pengetahuan ibu tentang Makanan Pendamping Air Susu Ibu dengan status gizi pada anak usia 6-24 bulan.Kesimpulan. Tidak terdapat hubungan antara tingkat pengetahuan ibu dengan status gizi anak usia 6-24 bulan di Puskesmas Jambula.
Karakteristik Dan Luaran Tumor Otak Pada Anak
Authors: Dewi Mia Milanti , Syuhada Rausyanfikr Tajul Arifin , Sobana Mirna
Published: September 2023

Latar belakang. Morbiditas dan mortalitas tumor otak pada anak masih menjadi masalah yang besar. Seringkali manifestasi klinis yang jelas muncul pada saat tumor dalam stadium lanjut. Saat ini luaran tumor otak di Indonesia masih belum memuaskan meskipun telah dilakukan berbagai terapi operatif maupun konservatif. .Tujuan. Mengetahui karakteristik dan luaran pasien tumor otak pada anak di Rumah Sakit Hasan Sadikin Bandung (RSHS).Metode. Dilakukan secara deskriptif retrospektif dengan data pasien tumor otak pada anak berusia < 18 tahun yang datang ke RSHS pada periode 1 Januari 2012 - 31 Desember 2018.Hasil. Selama penelitian terdapat 161 subjek dengan 88 pasien (54,6%) laki-laki. Tumor otak terjadi paling sering pada kelompok usia 6-12 tahun sebanyak 66 pasien (41%). Sebanyak 73 pasien (46,5%) memiliki tumor otak di area supratentorial, 80 pasien (51%) memiliki tumor di area infratentorial, dan 4 pasien (2,5%) memiliki tumor di area suprainfratentorial. Hasil patologi anatomi terbanyak yaitu meduloblastoma pada 36 pasien (22,3%), dengan derajat keganasan VI (46,5%), dengan manifestasi klinis paling sering adalah sakit kepala (64,5%). Pada pemeriksaan neurologis didapatkan parese saraf otak paling sering adalah gangguan nervus kranialis II (34%) dan hemiparesis (20,5%). Ditemukan pula adanya reflek patologis pada 55 pasien (34%). Hasil luaran paling banyak dari data yang tersedia adalah perbaikan dalam gejala klinis (60,3%).Kesimpulan. Meduloblastoma merupakan jenis tumor otak yang tersering (22,3%), pada anak dengan sakit kepala sebagai manifestasi paling banyak.
Bridging the intention-behaviour gap: Empirical evidence from the study of wiki use behaviour
Authors: Cheng Eddie W.L. , Cheng Kevin P.C.
Published: September 2023

Among other technologies, wikis, as a Web 2.0 technology, have been found to support online collaborative behaviour of students in group work. Despite the intention-behaviour relationship expected in many relevant theories, studies have found that the relationship between students’ intention to use wikis and their behaviour in using wikis was not strong. This discrepancy between expectation and actuality is referred to as the intention-behaviour gap. Researchers have explored mediators that can bridge the intention-behaviour gap. Given the study of behaviour across various disciplines, the variables that can bridge the intention-behaviour gap may be situational in nature. The present study therefore explored the effect of two mediators in a hypothesised model of the behaviour in using a wiki for students’ group assignments. In a longitudinal study with a sample of university students in Hong Kong, factor-based partial least squares structural equation modelling was used to examine the measurement and structural models. The results indicate that goal commitment and wiki-based communication, while substantially increasing the combined explanatory power of the variance in wiki use behaviour, significantly mediated the path from intention to behaviour. Both practical and research implications have been provided in this paper.
Implications for practice or policy:

Teachers should increase their influence by providing students with more guidance on how to work with the wiki.
Teachers should motivate students to have deeper online discussion by incorporating wiki-based communication as an assessment item.
To remove the barriers to early implementation of a wiki system, teachers should remind students of the importance of group dynamic strategies and their role in supporting collective scaffolding for peers.
An overview of fungal taxonomic, functional, and genetic diversity in coastal and oceanic biomes in megadiverse Mexico
Authors: Olguin Julio , Velez Patricia , Solís-Weiss Vivianne , Barrios Alejandra , Walker Allison K. , Ponce-Vélez Guadalupe , González María C. , Figueroa Mario , Botello Alfonso
Published: September 2023

A comprehensive literature review of mycodiversity in sandy beaches and oceanic environments in Mexico is presented through the analysis of published works from 1949 to early 2023. In addition, four unexplored sandy beaches in the Pacific Ocean and Gulf of California were sampled in order to fill knowledge gaps in terms of sampling biases. Marine fungi of Mexico were reported from water column, sediment, and debris samples collected in sandy beaches, open ocean, deep-sea plains, hydrothermal vents, and oxygen minimum zones in the Gulf of Mexico, the Pacific Ocean, the Gulf of California, and the Caribbean Sea. The taxonomic, functional, and genetic diversity, as well as distribution patterns and potential use of marine fungal genetic resources are discussed. A list of 126 species in 83 genera, 40 families, 25 orders, 12 classes, three phyla and one subphylum (excluding non-cultured taxa) of marine fungi is documented from Mexico. Lastly, we identified areas that would benefit from additional research, including the exploration of further deep-sea biomes in the Pacific Ocean, and coastal areas covering ecoregions in the states of Sonora, Sinaloa, Nayarit, Michoacán, and Oaxaca.
Effect of syringe underfilling on the quality of venous blood gas analysis
Authors: Lippi Giuseppe , Pighi Laura , Tosi Marco , Vettori Marco , Celegon Giovanni , Favaloro Emmanuel J. , Salvagno Gian Luca
Published: September 2023

Objectives

There is limited information on the influence of collecting small amounts of blood on the quality of blood gas analysis. Therefore, the purpose of this study was to investigate the effects of different degrees of underfilling of syringes on test results of venous blood gas analysis.

Methods

Venous blood was collected by venipuncture from 19 healthcare workers in three 1.0 mL syringes for blood gas analysis, by manually aspirating different volumes of blood (i.e., 1.0, 0.5 and 0.25 mL). Routine blood gas analysis was then immediately performed with GEM Premier 5,000. The results of the two underfilled syringes were compared with those of the reference syringe filled with appropriate blood volume.

Results

The values of most assayed parameters did not differ significantly in the two underfilled syringes. Statistically significant variations were found for lactate, hematocrit and total hemoglobin, the values of which gradually increased as the fill volume diminished, as well as for sodium concentration, which decreased in both insufficiently filled blood gas syringes. The bias was clinically meaningful for lactate in syringe filled with 0.25 mL of blood, and for hematocrit, total hemoglobin and sodium in both syringes containing 0.5 and 0.25 mL of blood.

Conclusions

Collection of smaller volumes of venous blood than the specified filling volume in blood gas syringes may have an effect on the quality of some test results, namely lactate, hematocrit, total hemoglobin and sodium. Specific indications must be given for standardizing the volume of blood to be collected within these syringes.
The Natural Man: Novalis’ Aesthetic Anthropology
Authors: Cherubini Matteo
Published: September 2023

The aim of this work is to show how Novalis designs his own development of Fichte’s and Kant’s gnoseological systems. The analysis is brought upon the distinction between “natural man” and “artificial man” expressed in Novalis’ fragments, and follows his exam of Nature, I and God – all three considered by a Kantian and Fichtean perspective. The conclusion of this paper is to show how two of the main concepts of Novalis’ philosophy (Schweben and Romantisierung) can be used as aesthetical and gnoseological devices to comprehend Novalis’ interpretation of the subject.