bluuebunny/crossref_metadata_2025 huggingface dataset:
Green Synthesis Derived Novel Fe2O3/ZnO Nanocomposite for Efficient
Photocatalytic Degradation of Methyl Orange Dye
Authors: Jadon Nimisha , Kour Bhupinder , Bhat Bilal Ahmad , Sharma Harendra K.
Published: January 2024

Introduction:

An eco-friendly method was reported for the synthesis of ferric oxide nanoparticles
(Fe2O3), zinc oxide nanoparticles (ZnO) and Fe2O3/ZnO nanocomposite using Mangifera
indica plant leaf extract as a natural reducing agent.

Methods:

The synthesized nanomaterials were successfully characterized by X-ray diffraction, UVvisible
spectrophotometer, Photoluminescence spectroscopy and Transmission electron microscopy.
The obtained XRD spectrums revealed the crystalline nature of synthesized materials and the average
diameters of Fe2O3 nanoparticles, ZnO nanoparticles and Fe2O3/ZnO nanocomposite came out to
be 11.33 nm, 14.31 nm and 9.80 nm, respectively. The UV-visible absorbance spectra and photoluminescence
spectrums confirmed that the Fe2O3/ZnO nanocomposite was visible light active and had
excitation peaks in the visible range.

Results:

The TEM analysis confirmed the composite and semiconductor nature of the synthesized
Fe2O3/ZnO nanocomposite. Furthermore, the photocatalytic activity of Fe2O3/ZnO nanocomposite
reaches about 91.07% degradation of methyl orange dye within a time period of 150 min at an optimized
catalyst dose. Adsorption isotherm and kinetic study were also applied to validate the study.

Conclusion::

It was found that there was monolayer adsorption of methyl orange dye molecules on
the surface of the synthesized catalyst under optimized experimental conditions and also, the adsorption
process follows the pseudo-second-order kinetic model.
Antimetastatic Drug, Pharmacologic Challenge and Opportunity
Authors: Lu Da-Yong , Lu Ting-Ren
Published: January 2024

:

Cancer is a complex and high-mortality disease in the clinic. Cancer metastasis leads to
most cancer deaths. The therapeutics for cancer metastasis are greatly unsatisfactory now. Despite
different types of antimetastatic agents and drugs have been reported, 90% of patients die in 5 years
after metastatic nodules at secondary sites have been found.

:

Many pharmacologic challenges and opportunities for current metastasis therapies are presented. To
overcome the dilemma and shortcomings of antimetastatic treatment, medical, chemical, pharmaceutical,
methodological and technical issues are integrated and highlighted. To introduce up-to-date
knowledge and insights into drug targeting and pharmaceutical features and clinical paradigms, relevant
drug design insights are discussed—including different pathological modes, diagnosis advances,
metastatic cascade, tumor plasticity, variety of animal models, therapeutic biomarkers, computational
tools and cancer genomics. Integrated knowledge, systems and therapeutics are focused.

:

In summary, medicinal comparison, pharmaceutical innovation and clinical strategies should be increasingly
investigated.
Endothelial Cell Aging and Autophagy Dysregulation
Authors: Marzoog Basheer Abdullah
Published: January 2024

:

Entropy is a natural process that affects all living cells, including senescence, an irreversible
physiological process that impairs cell homeostasis. Age is a significant factor in disease
development, and the pathogenesis of endothelial cell aging is multifactorial. Autophagy dysfunction
accelerates endothelial cell aging and cell death, while autophagy preserves endothelial
cell youthfulness through intracellular homeostasis and gene expression regulation. Sirt,
mTORC1, and AMPK are youthfulness genes that induce autophagy by inhibiting mTOR and
upregulating FIP200/Atg13/ULK1. Aged endothelial cells have decreased levels of Lamin B1,
γH2AX, Ki67, BrdU, PCNA, and SA β-Gal. Maintaining healthy young endothelial cells can
prevent most cardiovascular diseases. Autophagy targeting is a potential future therapeutic strategy
to modify endothelial cell age and potentially slow or reverse the aging process. This article
provides state-of-the-art research on the role of autophagy in endothelial cell aging. Hypothesizing
that autophagy dysregulation is associated with early endothelial cell dysfunction and further
clinical sequelae, including atherosclerosis formation, leading to various cardiovascular diseases.
Medicinal Plants in the Treatment of Respiratory Diseases and their Future Aspects
Authors: Firdaus Aliya , Yunus Mohd. Hadi , Izhar Syed Khalida , Afaq Uzma
Published: January 2024

The utilization of medicinal plants in the treatment of respiratory diseases has
a rich history dating back centuries. A vast body of research literature, including review
articles, research papers, case studies, patents, and books, provides substantial evidence
supporting the use of medicinal plants in the treatment of diseases and injuries. This
study delves into the diverse range of plant species known for their therapeutic properties,
with a specific focus on their applications in respiratory health. Medicinal plants
have played a crucial role as a source of ingredients for medications and the synthesis of
drugs. Globally, over 35,000 plant species are employed for medicinal purposes, particularly
in emerging countries where traditional medicine, predominantly plant-based pharmaceuticals,
serves as a primary healthcare resource. This review highlights the significance
of medicinal plants, such as aloe, ginger, turmeric, tulsi, and neem, in treating a
wide array of common respiratory ailments. These plants contain bioactive compounds,
including tannins, alkaloids, sugars, terpenoids, steroids, and flavonoids, which have diverse
therapeutic applications. Some medicinal plants, notably Echinacea purpurea and
Zingiber officinale, exhibit potential for adjuvant symptomatic therapy in respiratory
conditions, such as chronic obstructive pulmonary disease (COPD), bronchitis, asthma,
the common cold, cough, and whooping cough. The leaves of medicinal plants like Acacia
torta, Ocimum sanctum, Mentha haplocalyx, Lactuca virosa, Convolvulus pluricaulis,
and Acalypha indica are commonly used to address pneumonia, bronchitis, asthma,
colds, and cough. This review aims to shed light on specific medicinal plants with therapeutic
value, providing valuable insights for researchers in the field of herbal medicine.
These plants hold the potential to serve as novel therapeutic agents in the treatment of
respiratory diseases.
Long-Term Health Monitoring Data Processing on Post-Tensioned Concrete Box-Girder Bridge by Wavelet-Based
Authors: Zulkifli Rifdah Rofifah , Aminullah Akhmad , Satyarno Iman
Published: January 2024

The concrete box-girder bridge is designed to have a long service life of around 100 years. To ensure safety and performance degradation during long service life, a Structural Health Monitoring System (SHMS) has been implemented in the box-girder bridge. SHMS can reliably assess structural response due to real-time applied loads, detect anomaly activities and locate the structural damage in the structure. Several sensors have been implemented in the bridge to continuously record the behavior of the bridge in all environmental conditions. Due to real-time natural conditions, false alarms occur frequently in SHM due to the disruption of noises and lead to misunderstanding of who is evaluating. Nevertheless, numerous SHM data that have been collected make it complicated to determine the anomaly of the structures. Therefore, it required signal processing to maximize the potentialities of the massive SHM data, as well as the efficiency of the time work. In this study, wavelet transformation, a rapid and unsupervised signal processing approach, was used to analyze the huge signal data by removing noise, and separating different signal sources as well. Further, with time-frequency analysis and multi-resolution capabilities, the transformation of wavelet is a promising tool for analyzing long-term SHM data. The suggested approach is shown by using long-term strain data from a 40 m concrete box-girder bridge in 24h. The results showed that after the denoising process, the highest discrepancy between the reconstructed and original strain signal is 2.73 μƐ and lost their energy less than 1%. Hence, the strain gauge sensor was successfully able to eliminate the noise through wavelet technology.
Para entender a democracia
Authors: Santa Inês Leonardo , De Paula Julia Ester , Silva Gabriel Ferreira Aquino
Published: January 2024

Introdução à Teoria Democrática: Conceitos, Histórias, Instituições e Questões Transversais surgiu com o intuito de produzir um material didático consistente e em língua portuguesa para apresentar as teorias democráticas a audiências mais amplas, não necessariamente familiarizadas com a temática. Organizado por Eleonora Schettini Cunha e Ricardo Fabrino Mendonça, o livro é composto por 19 artigos que são estruturados em três seções, abordando desde questões clássicas e conceituais da democracia até as temáticas mais contemporâneas e específicas.
Uso do Twitter para engajamento político
Authors: Bernardes Cristiane Brum
Published: January 2024

O estudo analisa, comparativamente, como as quatro assembleias legislativas da Região Sudeste do Brasil utilizam os perfis institucionais do Twitter. A metodologia seguiu três etapas: 1) coleta automatizada das postagens de cada perfil desde sua criação até novembro de 2019, 2) análise de conteúdo automatizada das postagens, por meio do software Iramuteq; 3) análise quantitativa comparativa das interações. Conclui-se que o uso institucional dos perfis, apesar de algumas especificidades, se concentra na divulgação das atividades parlamentares para atingir os níveis de informação, compreensão e identificação, dentro do conceito de engajamento político de cidadãos com o Parlamento.
Religiões de matrizes africanas em representações midiáticas
Authors: Peixoto Roberta
Published: January 2024

O presente artigo tem como objetivo apresentar um panorama das representações construídas midiaticamente a respeito de religiões de matrizes africanas ao longo do século XX. Utilizando como metodologia pesquisas bibliográfica e documental – realizada a partir de consulta a periódicos disponibilizados digitalmente pela Fundação Biblioteca Nacional – este trabalho analisa notícias veiculadas no Jornal do Brasil, no período compreendido entre 1900 e 1985. Observa-se que, em meio a articulações entre Estado, imprensa e camadas da sociedade, os cultos afro-brasileiros passaram de prática coibida e inferiorizada por lei a símbolo folclorizado e espetacularizado de “brasilidade”. Neste sentido, enquanto produto de seu tempo, componente de debates interpessoais e constituidora da opinião pública, a mídia reproduzirá e emitirá discursos atados a estigmas e estereótipos e o uso do ódio enquanto ato comunicativo trará desdobramentos e impactos que se farão sentir até os dias atuais.
Nós versus Eles
Authors: Fraga Lucas L , Hoff Tânia M. C.
Published: January 2024

Abordamos, neste artigo, como a lógica populista opera em diferentes níveis no discurso político, conforme varia a construção da oposição ao “Outro”. Para este debate, o corpus é formado por dois pronunciamentos da história recente do Brasil: um do ex-presidente Lula (2002-2010) e um do atual presidente Jair Bolsonaro, com início do mandato em 2019. A partir destes atos discursivos, observamos como significações de mundo são mobilizadas, promovendo sentidos em torno da relação entre o Eu e o Outro, de modo a construir uma representação de “Povo” – aspecto constitutivo do populismo. A Análise Crítica do Discurso fundamenta nossa conduta teórico-metodológica, por meio da qual investigamos as estratégias argumentativas presentes na construção da oposição “Nós vs Eles”, e problematizamos, a partir das reflexões de Laclau e Mouffe, em que medida as significações de mundo acionadas na construção da oposição ao “Outro” podem representar uma ameaça aos regimes democráticos.
Anonimato e Democracia
Authors: Asenbaum Hans , Santos Caio Dayrell , Veloso Lucas
Published: January 2024

Embora o anonimato seja uma característica central das democracias liberais - não apenas no voto secreto, mas também no financiamento de campanhas, publicação de textos políticos, protestos mascarados e pichações - até agora não foi conceitualmente fundamentado na teoria democrática. Ao invés disso, é tratado como um conceito autoexplicativo relacionado à privacidade. Para superar essa omissão, este artigo desenvolve uma compreensão complexa do anonimato no contexto da teoria democrática. Com base na literatura diversa sobre o anonimato na participação política, explica o anonimato como uma performance de identidade altamente dependente do contexto que expressa sentimentos privados na esfera pública. O caráter contraditório de seus elementos centrais - negação e criação de identidade - resulta em três conjuntos de liberdades contraditórias. O anonimato permite (a) inclusão e exclusão, (b) subversão e submissão e (c) honestidade e fraude. Este caráter contraditório das affordances do anonimato ilustra o papel ambíguo do anonimato na democracia.
¡Aquí Estamos Las Mujeres!
Authors: Prudencio Kelly Cristina de Souza , Rizzotto Carla Candida , Belin Luciane Leopoldo , Saraiva Alexia Silva
Published: January 2024

A partir de uma reflexão sobre ativismo digital feminista, este artigo desenvolve uma análise de imagens publicadas no Instagram acompanhando 22 hashtags utilizadas durante os protestos no Brasil, Bolívia, Chile, Colômbia e Equador, em 2019, com a proposta de responder à seguinte questão: de que forma as imagens dos protestos sul-americanos de 2019 no Instagram apresentam a ação política das mulheres? Empreendida em duas etapas – uma fase quantitativa e uma qualitativa-interpretativa –, a análise de imagem permitiu identificar quatro principais formas de representação imagética das mulheres nas manifestações: protagonistas no coletivo, ativismo acidental, persuasão visual e coletivos feministas ativos. O artigo aponta ainda para algumas tendências de autorrepresentação das mulheres no Instagram e de apropriação das hashtags como ferramenta de ativismo feminista.
Apresentação
Authors: Mendonça Ricardo Fabrino , Cavassana Fernanda
Published: January 2024

Editorial da Revista Compolítica, edição 2021.3.
Editorial
Authors: Carvalho Fernanda Cavassana de , Mendonça Ricardo Fabrino
Published: January 2024

Editorial da edição 2022.1

Revista Compolítica, vol, 12, n.1, 2022.
Bolsonaro, entretenimento e política
Authors: Piaia Victor Rabello , Oliveira Raul Nunes
Published: January 2024

Este trabalho busca adicionar o entretenimento às análises sobre a dimensão comunicativa da ascensão política de Jair Bolsonaro. Na primeira seção, dialogamos com a literatura sobre entretenimento e política, argumentando por sua pertinência e propondo a integração das abordagens que enfatizam mediação, lógica e celebridades. Na segunda seção, apresentamos um panorama sobre os dados coletados, que correspondem a 34 participações de Bolsonaro em programas de entretenimento da TV aberta de alcance nacional entre 2010 e 2018. Por fim, à luz dos dados, discutimos as hipóteses de que a inserção de Bolsonaro no entretenimento contribuiu para sua normalização e projeção. No primeiro sentido, pontuamos que o formato e recorrência dos programas abriu espaço para a normalização da imagem de Bolsonaro e seu discurso. No segundo, exploramos como a mudança de postura e foco de Bolsonaro ao longo dos programas contribuiu para sua projeção não só entre telespectadores, mas também nas redes sociais.
Editorial
Authors: Carvalho Fernanda Cavassana de , Mendonça Ricardo Fabrino
Published: January 2024

Editorial da edição 2022.2
A CPMI das Fake News como palco de disputas discursivas permeadas pelo bolsonarismo
Authors: Chicarino Tathiana Senne , Conceição Desirèe Luíse Lopes , Segurado Rosemary
Published: January 2024

O fenômeno das fake news marcou de forma expressiva as eleições 2018 no Brasil, beneficiando principalmente a campanha do então candidato Jair Bolsonaro. Uma Comissão Parlamentar Mista de Inquérito foi aberta para investigar o ocorrido. Três audiências da chamada CPMI das Fake News serão analisadas neste artigo, que tem por objetivo compreender as disputas discursivas presentes nesses espaços. A metodologia é baseada na matriz francesa da análise de discurso e fizemos emergir o discurso dos depoentes e parlamentares, em suas interações de dissenso ou consenso, a partir de duas categorias heurísticas dos processos discursivos, os posicionamentos: em relação à disseminação de desinformação; e em relação às eleições 2018. Identificamos uma ação deliberada do bloco bolsonarista para controlar os sentidos discursivos por meio da reprodução de estratégias retóricas já utilizadas na campanha eleitoral e no governo Bolsonaro.
Comunicação no Facebook dos governos federal brasileiro e estadual paulista
Authors: Medrado Andrea Meyer , Cabral Filho Adilson Vaz
Published: January 2024

São abordados temas presentes nas páginas do Governo Federal do Brasil e do Estado de São Paulo no Facebook durante a pandemia da Covid-19, a partir de observações netnográficas e  análise de conteúdo. São enfatizadas questões econômicas e de saúde, relacionadas com a pandemia nestes dois níveis - Federal e Estadual - de governo. O artigo incorpora noções de "sociedade incivil" e "necropolítica", analisando como estas se manifestam em um contexto de reformas neoliberais aceleradas. As conclusões demonstram que o Governo Federal se concentrou em medidas econômicas enquanto havia pouca cobertura de questões de saúde, tais como prevenção, orientação e vacinas. Em contraste, o Estado de São Paulo tinha uma predominância de postos sobre vacinação. Para ambas as campanhas, estas foram percebidas como estratégias de campanha permanente em vez de atender às necessidades dos cidadãos.
populismo e a desinformação nos tweets de Bolsonaro
Authors: Freitas Amanda , Vieira Barbara Muniz , Rasquel Sandra Gomes
Published: January 2024

Este artigo propõe uma pesquisa interdisciplinar com o objetivo de compreender como a presença do populismo nas declarações do presidente Jair Bolsonaro, em postagens no Twitter, correlaciona-se à propagação de desinformação, contribui para o deslizamento de sentido e concorre pela disputa hegemônica discursiva em temas de interesse público. O referencial teórico engloba estudos da comunicação, da ciência política e de redes digitais e desinformação. Foram coletados 3.300 tweets, pela ferramenta API Acadêmica do Twitter. O procedimento metodológico envolve uma análise qualitativa. Os resultados indicam o predomínio de formas populistas combinadas entre si, associadas a estratégias de desinformação, desenvolvidas por um processo sistemático de criação de sentidos desviantes para eventos específicos, que se associam a notícias falsas e a alegações que geram percepções equivocadas e alimentam a desinformação na web.
Apoiando a questão atual
Authors: Costa Thiago
Published: January 2024

Este trabalho propõe uma análise do meme “Eu apoio a questão atual” (I Support the Current Thing, ISTCT), explorando suas origens, significados e usos. Apesar de ser utilizado como uma piada, o meme desumaniza usuários de redes sociais que não compartilham a mesma visão ideológica daqueles que o compartilham por meio de humor depreciativo. A partir de estudos psicanalíticos e de humor, o trabalho utiliza a análise visual crítica para investigar imagens coletadas com o auxílio de um API de Instagram. A análise indica que os aspectos desumanizantes e cínicos do meme auxiliam na normalização de preconceitos com aqueles que têm visões políticas discordantes de quem o compartilha. O trabalho também revela que a estrutura do chiste está imbricada na construção do meme, mascarando perspectivas ideológicas por meio do humor.
“This is No Time for Being Underwater”: Ableism, Rape Culture and Care Work in The Nowhere Girls
Authors: Moore Amber , Kelley Leah
Published: January 2024

This paper analyzes ableism, rape culture, and care work in Amy Reed’s The Nowhere Girls. Although this novel offers complex and diverse forms of care work by all three protagonists as they collectively mobilize anti-rape resistance and enact dynamic solidarity that is both responsive and relational, Erin’s character arguably activates the most radical employment. Calling for change in the world while also endeavoring to facilitate such change, she offers multifaceted and nuanced care work in a number of ways, including: (1) through friendship and family, (2) care for herself, and (3) creative activist care that explicitly supports other victim-survivors.
Investigating the Integration and the Long-Term Use of Smart Speakers in Older Adults’ Daily Practices: Qualitative Study
Authors: Chang Fangyuan , Sheng Lin , Gu Zhenyu
Published: January 2024

Background

As smart speakers become more popular, there have been an increasing number of studies on how they may benefit older adults or how older adults perceive them. Despite the increasing ownership rates of smart speakers among older adults, studies that examine their integration and the long-term use in older adults’ daily practices are scarce.

Objective

This study aims to uncover the integration of smart speakers into the daily practices of older adults over the long term, contributing to an in-depth understanding of maintained technology use among this demographic.

Methods

To achieve these objectives, the study interviewed 20 older adults who had been using smart speakers for over 6 months. These semistructured interviews enabled participants to share their insights and experiences regarding the maintained use of smart speakers in the long term.

Results

We identified 4 dimensions of the long-term use of smart speakers among older adults, including functional integration, spatial integration, cognitive integration, and semantic integration. For the functional integration of smart speakers, the study reported different types of use, including entertainment, information collection, medication reminders, companionship, environment modification, and emergency calls. For the spatial integration of smart speakers, the study showed older adults’ agency in defining, changing, and reshaping daily practices through the spatial organization of smart speakers. For the cognitive integration of smart speakers, the findings showed the cognitive processes involved in adapting to and incorporating smart speakers into daily habits and routines. For the semantic integration of smart speakers, the findings revealed that older adults’ enjoyable user experience and strong bonds with the device contributed to their acceptance of occasional functional errors. Finally, the study proposed several suggestions for designers and developers to better design smart speakers that promote maintainable use behaviors among older adults.

Conclusions

On the basis of the findings, this study highlighted the importance of understanding how older adults use smart speakers and the practices through which they integrate them into their daily routines. The findings suggest that smart speakers can provide significant benefits for older adults, including increased convenience and improved quality of life. However, to promote maintainable use behaviors, designers and developers should consider more about the technology use contexts and the specific needs and preferences of older adults when designing these devices.
Effectiveness of a Nursing Educational Intervention in Adults to Promote Control Behaviors Against Dengue: Protocol for a Randomized Controlled Trial
Authors: Llorente Pérez Yolima Judith , Rodríguez-Acelas Alba Luz , Mattiello Rita , Cañon-Montañez Wilson
Published: January 2024

Background

The increase in dengue cases can be attributed to social, demographic, environmental changes, or community-driven factors. In this regard, different strategies have been established in health education, using educational interventions as necessary tools for the reduction of the disease with the aim of reinforcing and stimulating the prevention and control of dengue.

Objective

This study aims to evaluate the effectiveness of a nursing educational intervention for dengue control.

Methods

A randomized controlled trial will be conducted with adults living in rural areas and participating in health promotion and disease prevention programs. We will enroll 116 adults. Adults will be randomized 1:1, with 58 adults assigned to the educational intervention group and 58 to the usual care group. Participants will receive 4 sessions over the course of a month, 1 week apart, and will be followed up for 1 month after the end of the educational intervention. Nursing Outcome Classification labels will be used to measure the outcomes: risk control (1902) and participation in health care decisions (1606).

Results

The participants in the intervention group are expected to achieve better dengue control behaviors than those in the usual care group.

Conclusions

Risk factors are fostered by the community, largely caused by artificial reservoirs or unprotected tanks in homes; also, the lack of information hinders the identification of symptomatology and the poor implementation of effective measures, and the development of standardized educational strategies can contribute to efficient and cost-effective control of the disease.

Trial Registration

ClinicalTrials.gov NCT05321264; https://clinicaltrials.gov/study/NCT05321264

International Registered Report Identifier (IRRID)

PRR1-10.2196/54286
Analysis of Extreme Rainfall in the Mt. Merapi Area
Authors: Anita Yuliana  , Joko Sujono  , Karlina
Published: January 2024

The slopes of Mount Merapi (Mt. Merapi) are an area prone to hydrological disasters due to elevation and orography. Hydrological disasters that have the potential to occur include floods, erosion, landslides, and drought which are closely related to extreme rainfall. Spatial and temporal variability of rainfall in mountainous areas requires rainfall data that can represent rainfall events. Therefore, this research aims to obtain the reliability of satellite rainfall data in the extreme rainfall indices. The CHIRPS, GPM-IMERG FINAL (IMERG-F) and GPM-IMERG LATE (IMERG-L) will be used in the reliability analysis of satellite-based rainfall compared to observed rainfall station. To validate satellite rain data, statistical criteria are utilized with parameters such as Correlation Coefficient (R), Root Mean Squared Error (RMSE), and Relative Bias (RB). Satellite-based rainfall estimates have a weak to moderate correlation (0.19 – 0.55), the RMSE value is relatively good (12.18 – 31.35 mm) and the observed bias tends to underestimate the estimated values. The capabilities of the IMERG-F, IMERG-L and CHIRPS satellites as alternative rainfall data in the Mt. Merapi area are quite good where IMERG-L has the best performance in capturing rainfall above 50 mm (R50mm), Consecutive Dry Days (CDD) indices, max 1–day and 5-day precipitation (Rx1day and Rx5day). The potential for extreme rainfall that is most prone to trigger lava floods occurs in the western region of Mt. Merapi at Ngandong Station (Sta. Ngandong). In this region, there is a high occurrence of extreme rainfall events. For instance, there were 501 instances of R50mm with an intensity of 77 mm day-1, Total Precipitation (PRCPTOT) reaches 3385 mm, Rx5day reaches 393 mm, and Consecutive Wet Days (CWD) lasts for 30 days. The results of this analysis can assist in climate understanding and modeling of extreme rainfall relevant to the region and support water resource management and disaster risk mitigation.
Dependencia y desarrollo capitalista en la sierra de Chiapas
Authors: Pohlenz Córdova Juan
Published: January 2024

El presente ensayo de Juan Pohlenz constituyó, en su momento, uno de los primeros intentos de captar una realidad económica regional, la del Soconusco, desde una perspectiva que no desechaba del todo la visión antropológica: era una tesis en Etnología que incursionaba en un tema poco tratado hasta entonces. Este trabajo era ya punto de referencia para quienes desde fines de los setentas se interesaban por el estudio de la región cafetalera del Soconusco.
Revisando los tipos de estuarios de la costa de Veracruz
Authors: Chávez-López Rafael
Published: January 2024

Seguramente en tus viajes por las costas de nuestro país has observado numerosos ríos que se encuentran con el mar; estas zonas acuáticas se conocen como estuarios, en estos se combinan las aguas dulces del continente con el agua salada del mar, lo que hace que estas zonas de transición acuática sean peculiares, porque ni son cuerpos de agua dulce y tampoco son marinos.

 

Esta cualidad hidrológica condiciona a las plantas y a los animales que los ocupan, pues debe ser fisiológicamente capaces de tolerar cambios a veces muy rápidos de la concentración de sales en el agua, por ejemplo, en los estuarios mexicanos es común encontrar a los manglares que son un ejemplo claro de vegetación “estuarina”, porque toleran esta variación salina a través de órganos y procesos fisiológicos especializados
Software educativo en la supervisión de la Química Inorgánica II
Authors: Rodrigues Antônio Rony da Silva Pereira
Published: January 2024

Se dice que la Química es una ciencia abstracta, y para demostrar sus conceptos es necesario usar esquemas y representaciones, y todavía es considerada difícil de entender por muchos estudiantes. Debido a esto, el uso de las Tecnologías de la Información y la Comunicación (TIC), es una alternativa a la enseñanza de la Química, al llevar mecanismos de interacción al aula. En este contexto, el presente estudio buscó evaluar la funcionalidad de dos programas informáticos educativos en la enseñanza de Química Inorgánica II, dentro del Programa de Supervisión Académico de la Universidad Estatal de Ceará, Brasil. El estudio se llevó a cabo durante 10 meses (marzo - diciembre), con 2 grupos, se utilizó el software PhET y MolView, y se aplicaron pre-test, test y cuestionarios, que sirvieron como fuente de recolección de datos, con el fin de evaluar la viabilidad del software frente a los conceptos de Química Inorgánica II.  Cuando ambos grupos utilizaron el software, se notó que la tasa de éxito de ambos grupos se volvió satisfactoria, y los estudiantes describieron que el software ayudó a comprender la Química Inorgánica II y que continuaron aplicando la tecnología a otras disciplinas.
On Distributional Effects in Local Electricity Market Designs: Evidence from a German Case Study
Authors: Lüth Alexandra , Weibezahn Jens , Zepter Jan Martin
Published: January 2024

A number of pilot projects have proven the feasibility of concepts for energy communities that the European Commission has called for in the Clean Energy for All Europeans package. Academia adopted these ideas and developed theories describing concepts, market designs, and characteristics of local electricity markets, peer-to-peer trading, and aggregation, proving these approaches to be feasible and to lead to major savings for community members. An investigation of impacts that occur when integrating these concepts into the existing markets on a larger scale or when performing adjustments has not been a main focus of existing research.
Determinants influencing investment decisions of individual investors: The case of the developing economy
Authors: Nguyen Thi Minh Phuong , Nguyen Thi Mai Anh , Tran Manh Dung , Le Quynh Lien , Nguyen Duc Nam
Published: January 2024

In recent years, the Vietnam stock market has recorded a large number of new investors, of which individual investors account for the majority. Although it has increased both in the number of listed shares and in trading value, price fluctuations are very unpredictable over different periods, and awareness of factors influencing investment decisions is still limited, leading to a high risk of loss in investment activities (Mayfield et al., 2008). The research was carried out in order to point out the factors influencing investment decision-making among potential individual investors, thereby proposing solutions to improve investment efficiency. The study used data from 261 questionnaires with four hypotheses, using qualitative and quantitative research methods, Cronbach’s alpha, exploratory factor analysis (EFA), and regression analysis by SPSS software. As a result, four elements influencing: 1) personality traits, 2) behavioral factors, 3) company-related factors, and 4) exogenous factors have a positive impact on the stock investment decisions of individual investors. Thereby the article shows solutions from the government, the stock market, businesses, and individuals to improve investment efficiency.
Towards Semi-Autonomous Robotic Arm Manipulation: Operator Intention Detection from Forces Feedback
Authors: Alharthi Abdullah , Tokatli Ozan , Lopez Erwin , Herrmann Guido
Published: January 2024

In harsh environments such as those found in nuclear facilities, the use of robotic systems is crucial for performing tasks that would otherwise require human intervention. This is done to minimize the risk of human exposure to dangerous levels of radiation, which can have severe consequences for health and even be fatal. However, the telemanipulation systems employed in these environments are becoming increasingly intricate, relying heavily on sophisticated control methods and local master devices. Consequently, the cognitive burden on operators during labour-intensive tasks is growing. To tackle this challenge, operator intention detection based on task learning can greatly enhance the performance of robotic tasks while reducing the reliance on human effort in teleoperation, particularly in a glovebox environment. By accurately predicting the operator’s intentions, the robot can carry out tasks more efficiently and effectively, with minimal input from the operator. In this regard, we propose the utilization of Convolutional Neural Networks, a machine learning approach, to learn and forecast the operator’s intentions using raw force feedback spatiotemporal data. Through our experimental study on glovebox tasks for nuclear applications, such as radiation survey and object grasping, we have achieved promising outcomes. Our approach holds the potential to enhance the safety and efficiency of robotic systems in harsh environments, thus diminishing the risk of human exposure to radiation while simultaneously improving the precision and speed of robotic operations.
Drivers of water storage changes in the Yangtze River Basin during 2002-2022
Authors: Wang Jielong , Shen Yunzhong , Awange Joseph , Tangdamrongsub Natthachet , Feng Tengfei , Yang Ling , Song Yongze
Published: January 2024

The Yangtze River Basin (YRB), home to around 400 million people, boasts
of abundant water resources and significant spatial heterogeneity.
Revealing the driving factors of water storage changes in YRB is
essential for effective water resource management and sustainable
development. In this study, we assess the drivers of total water storage
(TWS) changes derived from the Gravity Recovery and Climate Experiment
(GRACE) satellite within YRB from two perspectives: water balance and
water storage components, including snow water equivalent (SWE), surface
water storage (SWS), soil moisture storage (SMS), and groundwater
storage (GWS). We also investigate the influence of reservoirs (e.g.,
Three Gorges Reservoir (TGR)), lakes (e.g., Dongting, Poyang, and
Taihu), and glacier thawing on regional TWS changes. The results reveal
an apparent increasing trend in YRB’s TWS from 2002 to 2022, while
trends in precipitation, evapotranspiration, and runoff do not
adequately account for this observed trend. In addition, our findings
show that the increased TWS primarily occurs during the non-monsoon
season, characterized by limited precipitation. The analysis of water
components shows that the rise in TWS within YRB is predominantly
attributed to GWS accumulation. SWS also contributes to the increasing
TWS, primarily driven by the reservoir filling. The filling of TGR
explains the observed TWS increase in Hubei province, whereas Lake
Poyang accounts for about 30% of the positive TWS trend in Jiangxi
province. Our comprehensive analysis systematically unveils the drivers
of water storage changes in YRB, providing valuable insights for its
sustainable water resource management and utilization.
Assessment of the possibility of imitating experts' aesthetic judgments about the impact of knots on the attractiveness of furniture fronts made of pine wood
Authors: Gajowniczek Krzysztof , Bator Marcin , Śmietańska Katarzyna , Górski Jarosław
Published: January 2024

Our research aims to reconstruct expert preferences regarding the visual attractiveness of furniture fronts made of pine wood using machine learning algorithms. A numerical experiment was performed using five machine learning algorithms of various paradigms. To find the answer to the question of what determines the expert's decision, we determined the importance of variables for some machine learning models. For random forest and classification trees, it involves the overall reduction in node impurities resulting from variable splitting, while for neural networks it uses the Garson algorithm. Based on the numerical experiments we can conclude that the best results of expert decision reconstruction are provided by a neural network model. The expert's decision is better reconstructed for more beautiful images. The decision for nice images is made based on the best 4 or 5 variables, while for ugly images many more features are important. Prettier images and those for which the expert's decision is better reconstructed have fewer knots.
Biodiversity dynamics of terrestrial gastropods in the tropical montane rainforests of Nuwara Eliya, Sri Lanka
Authors: Thilakarathne Dinelka , Ranawana Kithsiri , Kumburegama Shalika
Published: January 2024

Sri Lanka is home to 253 terrestrial gastropod species, most of which are endemic. However, limited research has explored the diversity, distribution, and influencing variables of these gastropods. This study sampled gastropods in tropical montane rainforests by establishing 10-50 1m2 sampling plots across 60 randomly selected sites. Among the 46 recorded species, 79% were native, and 17% were exotic. Representative species of the five endemic genera to the island and two endemic semi-slug species were recorded from these forests. Native gastropod species were primarily found in forest interiors, while exotic species inhabited forest buffer regions. The distribution of most native species is influenced by elevation, air temperature, relative humidity, rainfall, and soil pH, while elevation and rainfall play a significant role in the distribution of most exotics. Exotics display broader environmental tolerance compared to natives, enabling exotics to invade the forests. The restricted habitat of many native species within deep canopy forests makes them highly vulnerable to habitat change, whereas exotics thrive under altered conditions.
COVID-19 vaccination predictors among people with mental disorders
Authors: Novakovic Emilija , Stojanovic-Tasic Mirjana , Novakovic Tatjana , Dutina Aleksandra , Bukumiric Zoran , Stasevic-Karlicic Ivana
Published: January 2024

Introduction/Objective. Higher rates of morbidity and mortality from the infection of COVID-19 have been recorded among people with mental disorders, especially among those suffering from severe forms, so they should be prioritized during vaccination campaigns. The aim of this study was to examine possible predictors of acceptance of vaccination against COVID-19 in patients with mental disorders. Methods. This retrospective study was conducted from January 2021 until January 2022 and included 458 patients with mental disorders treated at the Dr Laza Lazarevic Clinic for Mental Disorders in Belgrade, Serbia. Patients were segregated into the vaccinated and the unvaccinated group depending on their vaccination status. A questionnaire developed specifically for the present study was administered to gather the participants? sociodemographic characteristics, while data related to their mental disorders, COVID-19 infection, and comorbidities was obtained from their medical records. Results. Eighty percent of the vaccinated group opted for the Sinopharm vaccine. Significantly higher percentage of vaccinated patients was hospitalized during the study period and had comorbidities compared to the unvaccinated group (51.4% vs. 32.6% and 52.8% vs. 37.5%, respectively). Education level, employment status, marital status, diagnostic category, and comorbidities were statistically significant predictors of COVID-19 vaccination uptake among people with mental disorders. Conclusion. Our findings show that higher level of education, greater trust in the healthcare system, and knowledge of the available vaccination points significantly contribute to the vaccination uptake in this vulnerable population group.
Prevalence of depressive symptoms and association with sociodemographic factors among the general population in Serbia
Authors: Mijatovic-Jovanovic Vesna , Milijasevic Dragana , Cankovic Sonja , Tomasevic Tanja , Susnjevic Sonja , Ukropina Snezana
Published: January 2024

Background/Aim. Depression is a growing public health concern associated with disability, decreased quality of life, increased multimorbidity, and premature mortality. The aim of this study was to estimate the prevalence of depressive symptoms (DS) in the general population of Serbia and to analyze its association with sociodemographic factors. Methods. Data from the 2019 Serbian National Health Survey was analyzed (a sample of 12,406 respondents). The questionnaires used in this study were in accordance with the methodology of the European Health Interview Survey (EHIS) Wave 3. Patient Health Questionnaire eight-item depression (PHQ-8) scale was used to determine the prevalence of DS among the population aged ? 15 years. Multi-variate logistic regression analyses (MLRA) were implemented to assess the association of the prevalence of DS with the sociodemographic characteristics of the population. Results. The prevalence of both mild (7.5% vs. 4.4%) and moderate/severe DS (2.6% vs. 1.5%) was higher among women than men and increased continuously with age (13.6% of adults aged ? 65 years had mild and 5.0% moderate/severe symptoms). The highest rates of moderate/severe DS were present in respondents from Vojvodina (2.7%), among those who lived without a partner (2.7%), the lower educated (4.4%), the poor (3.4%), those with inactive employment status (3.7%), and those with poor social support (6.6%). MLRA showed that the highest odds of DS were present among the respondents aged ? 65 years [odds ratio (OR) = 6.53; 95% confidence interval (CI): 6.37?6.69] in the Vojvodina region, particularly males (OR = 1.96; 95% CI: 1.89?2.04), respondents who lived without a partner (OR = 1.49; 95% CI: 1.47?1.51), the lower educated (OR = 2.27; 95% CI: 2.22?2.33), the poor (OR = 2.54; 95% CI: 2.49?2.58), as well as those with poor social support (OR = 3.71; 95% CI: 3.64?3.77). Conclusion. The prevalence of DS in the general population of Serbia was relatively low and requires further monitoring. Female gender, older age, living in the region of Vojvodina, life without a partner, socioeconomic disadvantages, as well as the lack of social support were identified as the main factors associated with the occurrence of DS.
DNA Methylation–Based Assessment of Cell Composition in Human Pancreas and Islets
Authors: Drawshy Zeina , Neiman Daniel , Fridlich Ori , Peretz Ayelet , Magenheim Judith , Rozo Andrea V. , Doliba Nicolai M. , Stoffers Doris A. , Kaestner Klaus H. , Schatz Desmond A. , Wasserfall Clive , Campbell-Thompson Martha , Shapiro James , Kaplan Tommy , Shemer Ruth , Glaser Benjamin , Klochendler Agnes , Dor Yuval
Published: January 2024

Assessment of pancreas cell type composition is crucial to the understanding of the genesis of diabetes. Current approaches use immunodetection of protein markers, for example, insulin as a marker of β-cells. A major limitation of these methods is that protein content varies in physiological and pathological conditions, complicating the extrapolation to actual cell number. Here, we demonstrate the use of cell type–specific DNA methylation markers for determining the fraction of specific cell types in human islet and pancreas specimens. We identified genomic loci that are uniquely demethylated in specific pancreatic cell types and applied targeted PCR to assess the methylation status of these loci in tissue samples, enabling inference of cell type composition. In islet preparations, normalization of insulin secretion to β-cell DNA revealed similar β-cell function in pre–type 1 diabetes (T1D), T1D, and type 2 diabetes (T2D), which was significantly lower than in donors without diabetes. In histological pancreas specimens from recent-onset T1D, this assay showed β-cell fraction within the normal range, suggesting a significant contribution of β-cell dysfunction. In T2D pancreata, we observed increased α-cell fraction and normal β-cell fraction. Methylation-based analysis provides an accurate molecular alternative to immune detection of cell types in the human pancreas, with utility in the interpretation of insulin secretion assays and the assessment of pancreas cell composition in health and disease.

Article Highlights
Los dilemas en la práctica de los Estados plurinacionales e interculturales: retórica versus acción alrededor de las democracias comunitarias
Authors:   Universidad Central del Ecuador, Madrid Tamayo Andrea , Taco-Chisaguano Janeth , Almeida Méndez Emilio
Published: January 2024

El presente artículo revisa, a la luz del Estado plurinacional e intercultural del Ecuador, cómo ha funcionado en la práctica el reconocimiento de lo que en la Constitución de 2008 se denominó como democracia comunitaria y que da cuenta de una forma de organización social y política ejercida ancestralmente por pueblos y nacionalidades indígenas. El objetivo es analizar los elementos sociales y simbólicos de esta forma comunitaria de ejercer la democracia, sus implicaciones y connotaciones para la organización de la comunidad indígena del estudio de caso. Por otro lado, se revisan algunas conceptualizaciones sobre este término, y se observan los aportes que el Estado plurinacional de Bolivia ha introducido en el debate. Para ello, se realizó un levantamiento etnográfico, una revisión de literatura y un acercamiento a las dinámicas técnico-políticas en el ámbito burocrático, que se desarrollaron en el contexto de un Estado reconocido constitucionalmente como plurinacional e intercultural. Finalmente, las conclusiones giran en torno al trabajo que tiene hacia adelante el Estado ecuatoriano y particularmente las entidades de la Función Electoral, para garantizar el reconocimiento pleno de la democracia comunitaria.
Os intelectuais e a ditadura no Brasil (1964-85)
Authors:   Instituto Federal Catarinense (IFC), Goulart da Silva Michel
Published: January 2024

Neste ensaio discute-se a produção ideológica de intelectuais no contexto da ditadura que governou o Brasil entre os anos de 1964 e 1985. Discute-se como uma parcela significativa de escritores, professores e outros intelectuais colaboraram com o regime ditatorial. Procura-se demonstrar a relação estabelecida pelos intelectuais com a ditadura e seu papel na difusão de ideologias de defesa do regime repressivo e de legitimação das ações do Estado. Para tanto, são analisados alguns textos publicados no período por Miguel Reale e Gilberto Freyre, mostrando algumas de suas análises e posições de apoio à ditadura.