bluuebunny/crossref_metadata_2025 huggingface dataset:
Voluntary International Mobility Lived in Laughter, Tears, and Resignification: Experiences of Brazilians Shared on YouTube Channels
Authors: Bueno Janaína Maria , Domingues Carlos Roberto , Vaz Amanda Cristina Corrêa , Ferreira Nicole Hage
Published: December 2022

Abstract Voluntary international mobility requires greater responsibility, given that there is no structure and organizational support for the challenge of living in another country. The aim of this study is to analyze the intercultural adaptation process of Brazilian immigrants and self-initiated expatriates in “off-axis” countries (less sought after/without a structured community of Brazilians) based on their reports and interactions on YouTube channels. The study employs a qualitative approach, with narrative research of four individuals. The data were collected between March and May of 2021 according to the following categories: intercultural adaptation; types of adaptation; structure and functioning of the channel. We confirmed the applicability of the theories of intercultural adaptation to analyze voluntary mobility, but with the need to consider specific aspects, such as advance adjustment actions, the influence of the channels on the focus and effort to adapt to the general environment and interact with the locals, and the emergence of individual aspects and behaviors (such as flexibility to change and self-knowledge), which were shown to be relevant for the intercultural adaptation process in voluntary mobility. As a theoretical contribution, it is understood that to use the theories about intercultural adaptation with the aim of analyzing voluntary mobility it is necessary to consider some specific aspects of this type of mobility while still in the country of origin, the weight and importance of each adaptation environment for the voluntary expatriate’s objective, and how much that experience is shared and exposed on different media with their respective impact on choices and (re)creation of meanings.
EXPANSION OF HIGHER EDUCATION AND CAREER CONSTRUCTION: MULTI-CASE STUDY WITH UNDERGRADUATES
Authors: Zatti Fernanda , Luna Iúri Novaes
Published: December 2022

ABSTRACT The expansion of higher education in Brazil in recent decades has produced distinct and heterogeneous contexts, contributing to the change in the sociodemographic profile of students. Within the scope of studies on career construction in higher education and based on the Life Designing model, this investigation examined the process of career construction of undergraduates from public institutions in Alto Uruguai gaúcho, a region affected by the expansion and establishment of universities in the interior of the states of Brazil. This is a multiple case study with six undergraduates who showed different levels of career adaptability. Based on the emerging categories of analysis, the results indicated that the proximity of Higher Education institutions, the family context, the need to reconcile study and work and the perspective of social mobility associated with the transition to adulthood are relevant themes in the process of participants’ career construction, highlighting the importance of public policies for higher education.
El Gesto Académico y el Pensamiento Intercesor: infantilidad y saberes sobre la infancia
Authors: Marín-Díaz Dora Lilia
Published: December 2022

RESUMEN Este artículo de reflexión, derivado de la revisión documental sobre la producción académica de la profesora Sandra Mara Corazza, describe el pensamiento intercesor que su gesto académico produjo y que permite reconocer por lo menos cuatro aportes al campo de saber sobre la infancia, con los cuales se visibilizan regiones para avanzar en la deconstrucción, reorganización y comprensión de lo infantil. Tal pensamiento intercesor apunta hacia una región por explorar que exige una acción en el orden discursivo y práctico y que interroga los modos como nos conducimos, así como las formas y posibilidades que construimos con y para la experiencia de infancia.
Distribuição da população escravizada pelas unidades domiciliares de Guarapiranga, Mariana, Minas Gerais (1766-1810)
Authors: Antunes Álvaro de Araujo , Silveira Marco Antônio
Published: December 2022

RESUMO O objetivo deste artigo consiste em analisar a distribuição e composição da população escravizada numa das freguesias mais prósperas do termo de Mariana no decorrer do século XVIII: a de Guarapiranga. Para tanto, é adotado como fonte o inédito “Rol dos que confessaram e comungaram no ano de 1766”, cujos números são comparados com os do pouco conhecido Mapa da população da Leal Cidade de Mariana no ano de 1810. Objetiva-se dessa maneira compreender a distribuição da população escravizada pelas unidades domiciliares da freguesia no decorrer das décadas.
O benefício do mascaramento modulado nos potenciais evocados auditivos corticais com estímulo de fala
Authors: Rocha Mônyka Ferreira Borges , Menezes Denise Costa , Duarte Danielle Samara Bandeira , Griz Silvana Maria Sobral , Frizzo Ana Claudia Figueiredo , Menezes Pedro de Lemos , Teixeira Cleide Fernandes , Advíncula Karina Paes
Published: December 2022

RESUMO Objetivo analisar o efeito do mascaramento estável e modulado no Potencial Evocado Auditivo Cortical com estímulo de fala em adultos-jovens. Método participaram 14 indivíduos com idades entre 19 e 28 anos de ambos os sexos e sem perda auditiva. O exame de Potencial Evocado Auditivo Cortical foi realizado com estímulo de fala sintética /ba/ simultâneo ao ruído Speech Shaped Noise apresentado em três condições: ruído estável com intensidade de 30 dB NPSpe (ruído estável fraco), ruído estável com intensidade de 65 dB NPSpe (ruído estável forte) e ruído modulado em intensidade de 30 dB NPSpe e 65 dB NPSpe em 25Hz e com período de modulação de 40 ms. Resultados foram observadas maiores latências nos componentes corticais, exceto P2, na condição de ruído estável forte e medidas mais robustas de amplitude dos componentes corticais P1, N1 e P2 na condição de ruído modulado com diferença estatística significativa na comparação com a condição de ruído estável forte. Houve pior morfologia na condição de ruído estável forte, quando comparado aos demais registros. Os limiares eletrofisiológicos médios para as condições de ruído estável forte e ruído modulado foram 60 dB NPSpe e 49 dB NPSpe, respectivamente, mostrando 11,7 dB de diferença média. Conclusão podemos inferir que houve um menor efeito mascarante do ruído modulado, comparado à condição de ruído estável forte, nas medidas de amplitude dos componentes corticais e uma diferença média de 11,7 dB entre os limiares eletrofisiológicos (interpretado como a medida do Benefício do Mascaramento Modulado).
Effect of stimulation of auditory skills of speech-language pathologists to perceptual evaluation of vocal deviation
Authors: Pacheco Letícia do Rosário Amado , Gielow Ingrid , Madazio Glaucya , Yamasaki Rosiane , Behlau Mara
Published: December 2022

ABSTRACT Purpose To verify if the stimulation of auditory skills of speech therapists with and without difficulty in auditory processing (CAP) interferes in performance of auditory-perceptual assessment (APA) regarding predominant vocal deviation. Methods Prospective, quasi-experimental study, conducted with 26 speech therapists and developed in five stages: Stage1: Pre-intervention - APA, composed of 30 samples of sustained vowel emissions /ε/, plus 20% repetition (six repeated samples) in which participants should identify the predominant vocal deviation. Stage2: Screening of CAP skills through nine tests of AudBility web platform. Stage3: Perceptual-auditory training of predominant vocal deviation and, later, second APA, identical to previous one. Stage4: Intervention - Stimulation of auditory skills (EHA) performed by 14 participants, eight of which failed the screening from Stage2 and six who passed th e screening and spontaneously performed EHA (Group G2a ). The other 12 participants did not perform EHA and formed the G2b Group. Stage5: Post-intervention - Third execution of APA, identical to previous, by all participants. Accuracy of analysis and intra-rater reliability were assessed in all APAs. Results The three groups showed similar performances in the three APAs. G1 and G2a showed no improvement in the performance of the analysis of predominant vocal deviation after EHA. Pre-intervention intra-rater reliability in G1 was lower than in G2a and G2b in APA1 and APA2, and similar to them in APA3, post-intervention. Conclusion Proposed EHA had no impact on APA accuracy, but influenced in intra-rater reliability of speech therapists with difficulty in the hearing skills of CAP.
Medidas perceptivo-auditivas e acústicas de mulheres com e sem nódulos vocais
Authors: Conserva Késsia Cecília Fernandes , França Fernanda Pereira , Lopes Leonardo Wanderley
Published: December 2022

RESUMO Objetivo Comparar as medidas acústicas e perceptivo-auditivas de mulheres com e sem nódulos vocais. Métodos Participaram do estudo 12 mulheres com nódulos vocais (grupo MNV) e 12 sem nódulos vocais (grupo MSNV). Foram submetidas à gravação da vogal /a/ sustentada, com o objetivo de extrair a média da frequência fundamental (f0), desvio padrão de f0 (DP f0), jitter, shimmer, Glottal Noise Excitation, medidas relacionadas ao Cepstral Peak Prominence-Smoothed, medidas espectrais das diferenças do primeiro e segundo harmônico (H1-H2) e gravação das frases-veículo: “Digo papa baixinho”, “Digo pipa baixinho” e “Digo pupa baixinho”, para extração do primeiro (F1) e segundo formante (F2) dos segmentos vocálicos /a, i, u/. Para avaliação perceptivo-auditiva, utilizou-se a Escala Visual Analógica. Resultados A análise comparativa entre os grupos evidenciou maiores valores para o grupo MNV nos parâmetros grau geral, rugosidade e soprosidade e para a medida acústica shimmer. Os valores de F1 para as vogais /a/ e /u/ e os valores de F2 para a vogal /a/ apresentaram-se mais elevados no mesmo grupo. Conclusão mulheres com nódulos apresentaram vozes mais desviadas, com presença de rugosidade e soprosidade e modificações nos ajustes do trato vocal, com possível redução na amplitude dos articuladores, quando comparadas às mulheres sem nódulos vocais.
OS ESTADOS DE EGO PELA EXPERIÊNCIA PSICODRAMÁTICA BIPESSOAL: A EXTERNALIZAÇÃO DE PAPÉIS INTERNOS (PARTES)
Authors: Khouri Georges Salim
Published: December 2022

RESUMO Este artigo tem como objetivo apresentar o manejo clínico para externalização dos papéis internos ou partes, através da experiência psicodramática, tendo por base as técnicas de Moreno e de Rojas-Bermúdez, a exemplo da construção de imagens tridimensionais e bidimensionais por meio de pessoas, objetos, bonecos, tecidos e o psicodrama interno desenvolvido por outros autores. A gênese das partes, em geral, está relacionada à dissociação decorrente de traumas ou ao introjeto de figuras parentais significativas, principalmente quando o apego é inseguro. Traumas complexos, relacionados a bullying, abuso sexual, violência doméstica de várias naturezas ao longo do desenvolvimento da criança vai trazer à tona essas partes internas que precisam ser bem compreendidas porque afetam vários papéis sociais. Papéis internos, partes, eu parcial, divisão interna, personagens, estados de ego, criança ferida, subpersonalidades são denominações de um mesmo fenômeno, que se manifesta pela multiplicidade de eus. Esse fenômeno é também constatado no campo da neurose e em normóticos.
Análise dos discursos e imagens presentes no capítulo sobre Educação Física Escolar no Guia de Atividade Física para a População Brasileira
Authors: Malacarne José Augusto Dalmonte , Carvalho Pedro Henrique Melo de , Araújo Mariane Ferreira dos Santos , Rocha Marcelo Borges , Palma Alexandre
Published: December 2022

RESUMO O objetivo deste trabalho foi analisar os discursos e imagens sobre a Educação Física Escolar presentes no Guia de Atividade Física para a População Brasileira. Realizou-se uma pesquisa documental, de abordagem qualitativa, a partir da análise do discurso e do conteúdo visual envolvendo o capítulo. A Educação Física Escolar, nas recomendações do guia, assume uma visão funcionalista e utilitarista do movimento humano. Entende-se o avanço promovido pelo guia, sobretudo ao incentivar e valorizar a Educação Física Escolar no Brasil. Contudo, é fundamental transformar o discurso vigente, de caráter predominantemente biomédico, em uma abordagem que valorize a cultura corporal em suas múltiplas contribuições para a formação dos estudantes.
Mediações entre trabalho e educação física: uma análise a partir de um programa de escolarização de trabalhadores
Authors: Angelo Denis Fernando Barcellos , Fonseca Denise Grosso da , Lima Leonardo da Silva
Published: December 2022

RESUMO Este texto apresenta resultados de uma pesquisa que tem como objetivo compreender o papel da Educação Física em um programa de escolarização de adultos trabalhadores do município de Porto Alegre/RS. Utiliza-se o materialismo histórico dialético como teoria e método de pesquisa, apontando como parte dos resultados a ausência da categoria trabalho no interior da Educação Física e a reivindicação por parte dos sujeitos pesquisados de que a área possa contribuir para pensar o trabalho enquanto atividade humana fundamental. Por fim, considera-se que a educação física é parte importante da formação humana, aliada a uma educação científica e técnica, que possa contribuir para a constituição de um projeto histórico da classe trabalhadora, superando a sociedade do capital.
EFEITO CASCATA DAS CAPACIDADES DE MARKETING ESTÁTICAS E DINÂMICAS NA PERFORMANCE INTERNACIONAL: ANALISANDO A ORIENTAÇÃO PARA O MERCADO COMO ANTECEDENTE
Authors: Reimann Caroline , Carvalho Fernando , Duarte Marcelo
Published: December 2022

RESUMO Esta investigação tem como objetivo analisar as relações entre as capacidades de marketing estáticas (CME), capacidades de marketing dinâmicas (CMD) e desempenho internacional de pequenas e médias empresas (PMEs), bem como a conexão entre CME e CMD. Também analisamos o papel da orientação para o mercado (OM) como um antecedente das capacidades de marketing. Foi desenvolvido um estudo quantitativo, utilizando-se um inquérito como método de pesquisa. Foram coletadas 335 respostas válidas das PMEs portuguesas internacionalizadas por meios do modelo B2B. Para testar as hipóteses propostas, utilizou-se o modelo de equações estruturais. Os resultados mostram uma relação direta e positiva entre o CME e o desempenho internacional. A CMD foi positivamente ligada à CME, exercendo, assim, sua influência indireta no desempenho internacional. Além disso, observou-se uma relação positiva entre a OM e ambas as capacidades de marketing, revelando sua natureza antecedente sobre as capacidades analisadas. Este estudo contribui para a área da pesquisa relacionada às capacidades de marketing na medida em que as inter-relações entre diferentes tipos de capacidades de marketing nunca foram estudadas antes. Além disso, chama a atenção dos gestores para a importância de desenvolver recursos básicos de marketing mix, uma vez que aparecem como elemento com influência direta no desempenho internacional.
Contesting modernization in rural peripheral settings: the pioneering lens of Cynthia Hewitt de Alcántara
Authors: Ruvituso Clara
Published: December 2022

Abstract The interdependent inequalities in the production and circulation of knowledge in the social sciences have marked the historical development of mostly male canons from the centers. With the impulse of the feminist wave in Latin America, the great contribution of invisible women to the construction of the social sciences has begun to have high relevance. This article introduces for the first time the intellectual and professional trajectory of Cynthia Hewitt de Alcántara (1942) from the gender and sociology of knowledge perspectives. Based on her written production and an in-depth interview conducted in July 2022, I focus on the author’s production during her first stay in Mexico between 1966-1985, reconstructing the interrelations between the contexts of production and her contributions contesting modernization processes within the green revolution, the situation of women in peripheral rural contexts and the entangled paradigms of the social sciences from a gendered perspective.
Development in Latin America: political economies as a matter of culture
Authors: Garcés-Velástegui Pablo
Published: December 2022

Abstract The growing unrest regarding the social, political, economic and environmental state of affairs in Latin America suggests a deep challenge of the development model. Ideas about development matter because they seek to bring about social states by solving what are regarded as social ills. However, its definition is being increasingly disputed. This article makes sense of that plurality. Applying grid group cultural theory to this debate produces four irreducible ideal-typical worldviews and notions of development: market-led, state-led, multiple community-led, and a mirage.
Imagen social del docente en el periódico español “El País” durante la pandemia
Authors: Amber-Montes Diana , González Ornelas Virginia , Martínez Serrano María del Carmen , Camargo Cíntora Eréndira
Published: December 2022

Resumen En un contexto de incertidumbre y fuertes cambios en el ámbito educativo derivados de la crisis sanitaria internacional producida por la Covid-19, este estudio tuvo como objetivo desvelar las representaciones sociales del docente derivadas del discurso del periódico digital de mayor difusión en España durante la pandemia. El método utilizado fue el análisis del discurso con notas de la teoría fundamentada, desde una lógica inductiva. Se analizaron 247 noticias relativas a la figura docente publicadas por el periódico digital español El País . Este se seleccionó por ser el diario de mayor difusión en la fecha del estudio. Los resultados mostraron once representaciones sociales del docente coexistentes en el discurso de la prensa. Estas se organizaron en seis conceptos emergentes relativos al discurso analizado: Resiliencia (resilientes), Innovación (innovadores versus tradicionales), Implicación (implicados versus desmotivados), Experticia (expertos versus en formación), Reconocimiento (reconocidos versus sin reconocimiento), Situación laboral (beneficiados versus precarios). Las conclusiones indican que el discurso mediático crea una imagen polifacética del docente, marcada por la resiliencia. Durante la pandemia, el rol resiliente en el profesional docente es reconocido y a la vez demandado por la prensa analizada. Este rol se perfila como imprescindible para la adaptación a una nueva realidad educativa mediada por la tecnología.
Entre “liberdade” e “escravidão”: narrativas de agência e sofrimento no enfrentamento missionário ao tráfico de pessoas, em Fortaleza, Brasil
Authors: Sales Ana Paula Luna
Published: December 2022

Resumo: O artigo discute os usos das categorias “liberdade” e “escravidão” em ações evangélicas de enfrentamento ao tráfico de pessoas. A partir da pesquisa etnográfica conduzida entre 2014 e 2017 junto a grupos religiosos transnacionais em Fortaleza, argumenta que as estratégias de publicização missionárias são construídas sobre os trânsitos entre os domínios doméstico e público, ritual e cotidiano, religioso e secular. O sucesso de missionárias ao realizar esses trânsitos implica a leitura do sofrimento marcado por desigualdades de gênero como expressão de “liberdade”, enquanto outras formas dessas desigualdades seriam evidência da “escravidão” das supostas “vítimas”.
Students’ Perspective on Parental Involvement in Children’s Education: A Case Study of (at-risk) Secondary School Students under Punakha Dzongkhag
Authors: Sherpa Sonam Zangpo , Samdrup Rinchen , Drukda Jamyang , Wangchuk Kinzang , Wangmo Ugyen , Norbu Wangchuk
Published: December 2022

Parental involvement is the active participation of parents in their children’s educational processes and experiences. Numerous studies have established a significantly positive link between parental involvement and children’s academic, and socio-emotional outcomes. Many studies explored parents’ and teachers’ perspectives, however, parental involvement being a multi-dimensional variable, requires requisite perspectives from all stakeholders. A global paucity of studies exploring students’ perspectives and the absence of research on parental involvement, in the Bhutanese context, served as the impetus for this study. This study investigated the perspective of at-risk students on parental involvement in children’s education. The 257 participants faced circumstance(s) such as divorce, separation, and death of the parent(s). The mixed methods approach was employed to collect both quantitative and qualitative data to determine how the participants perceive parental involvement in their education. Survey questionnaires, focus group discussions, and narrative story writing were used to glean participants’ perspectives. The findings reveal the extent of involvement for different members of the family, the perceived importance of parental involvement at different levels of education, some common barriers to parental involvement, areas of involvement and neglect, and the impact of death, separation, and divorce of parents, on at-risk students. The study primarily recommends relevant stakeholders create awareness of the value of parental involvement as well as devise policy instruments to promote it for the holistic development of at-risk students.
De la sélection à l’annotation
Authors: BALOGE Martin , BELOUED Abdelkrim , HUBÉ Nicolas , LALANDE Steffen
Published: December 2022

Les travaux en sciences de la communication ou en science politique centrés sur l’analyse de discours permettent de repérer des régularités statistiques pour appréhender la sémantique, la logométrie ou les invités dans des corpus spécifiques. Ces approches deviennent limitées lorsque l’on s’intéresse à la fois aux discours et à leurs producteurs. Ce chapitre présente une approche nouvelle tentant de croiser ces deux dimensions, tout en cherchant à développer un instrument de mesure de ces mécanismes de connivence, de conflictualisation ou d'indifférence entre journalistes et hommes/femmes politiques. L’enjeu est de savoir s’il est possible d'améliorer l’analyse semi-automatique de corpus vidéos par l’utilisation d’outils numériques dédiés, afin de faciliter et accélérer le travail du chercheur. Cet article présente les modalités de création d’un corpus vidéo et de l’outil d’analyse OKAPI développé à l’INA ainsi que le travail d’annotation réalisé par les équipes du CESSP en utilisant cette plateforme. Ce projet est le fruit d’une collaboration de ces deux équipes dans le cadre du projet OOPAIP : Ontologie et Outils Pour l’Annotation des Interventions Politiques (DIM STCN - Ile de France).
Préserver, valoriser et transmettre le patrimoine minier des Hauts-de-France
Authors: BLONDEAU Virginie , CHAUDIRON Stéphane , DALOZ Amélie , JACQUEMIN Bernard , KERGOSIEN Éric , LELEU-MERVIEL Sylvie , LE MARQUER Juliette , TARDY Cécile
Published: December 2022

Cette communication présente l’état d’avancement du projet MémoMines (ANR 16-CE38 0001).. La problématique générale du projet porte sur la conservation d’un patrimoine culturel proche de la disparition, à savoir la mémoire minière du Nord et du Pas-de-Calais. Elle concerne en particulier la sauvegarde des mémoires individuelles par leur conversion en traces mémorielles, leur mise à disposition sous forme de corpus d’archives numériques accessibles à tous et leur remédiatisation numérique. Les résultats présentés sont de trois types : la construction d’une archive audiovisuelle des mines à partir de témoignages d’anciens mineurs, l’identification et l’analyse de la mémoire minière au regard des communautés expertes et amateures, et l’apport des systèmes d’organisation des connaissances à la sauvegarde du patrimoine à partir de trois systèmes (une terminologie, un thésaurus et une ontologie).
Effect of concentration and temperature on the rheological behavior of camu-camu pulp
Authors: del Águila Cifuentes Dayro , Leandro Laguna Caleb , Bazán-Colque Ronel Joel , Basilio Atencio Jaime Eduardo
Published: December 2022

The objective of this study was to understand how the concentration of soluble solids (Cp) and temperature (Tp) affected the rheological behavior of camu-camu pulp. Factors of Cp (10 – 20 °Brix) and Tp (30 – 60 °C) were varied according to a 3 × 7 factorial design with three repetitions. Ripe camu-camu fruits showed biometric characteristics of weight (10.81 g), axial diameter (2.55 cm), and equatorial diameter (2.68 cm) before being pulped. Physicochemical characteristics of the pulp were: soluble solids (6.26 °Brix), pH (3.46), moisture (92.56%), and ascorbic acid (1.78 g/100 g). Pulp concentration was performed in a rotary evaporator and rheological measurements were evaluated in a Brookfield viscometer. The rheological parameters helped to calculate the consistency index (K: 11.82 to 69.29 Pa·sn) and flow index (n: 0.303 to 0.347) using the Power Law model (R2 > 0.9), revealing the nature of the shear thinning (pseudoplastic behavior). The activation energy varied from 8.51 to 10.21 kJ/mol. The rheological results of concentrated camu-camu pulps can be used as parameters for quality and dimensioning equipment, pipes, heat exchangers, filters, and pumps.
Tara agribusiness system of Peru: performance and commercial dynamics
Authors: Cabrera-Vásquez Kaila Wenqui , Gambo-Alarcón Pedro Wilfredo , Castro-Santander Publio Oscar , Solano-Gaviño Juan Carlos
Published: December 2022

The objective of the research was to evaluate the performance of tara agribusiness system-ABS of Peru according to the commercial dynamics of the international market. The methodology of Diagnosis and Strategic Management of an Agribusiness System was used and as tools the analysis of market dynamics and discrete structural analysis for the ABS, based on the review of bibliographic sources and the application of semi-structured interviews. The ABS presents a growth in exports of tara derivatives based on demand. Powdered tara and tara mucilages are the main export products, however, market disruptions fluctuate their sales prices. In this context, the ABS has an institutional environment that encourages the production of tara and derivatives for the international market, however, a limited performance of small producers is evident due to their high informality, low scale, weak collective level and low technological level for the production of tara. Therefore, the commercial dynamics of the ABS is limited by the low performance of the producers.
Phytoremediation to recover soils contaminated by heavy metals: systematic review discussion
Authors: Goicochea-Trelles Paula Andrea , Garcia-Lopez Yvan Jesus
Published: December 2022

Soil contamination by metals is an environmental problem and phytoremediation has proven to be a technique that promises the recovery of these soils. Even so, the selection of species to be used in phytoremediation is key to obtaining promising results. Next, through a systematized literature review, 125 research published between 2016 and 2021 on the different species of accumulator plants were analyzed to reduce pollution and recover soils. At the beginning of the investigation, the consequences of soil contamination are mentioned, and phytoremediation is presented as a viable alternative to reduce it. The research analyzed was obtained from significant documentary sources such as journal articles indexed in the Scopus, Intech, IOPScience and Scielo databases due to their international relevance and high impact index. The review of the fifteen most relevant articles between 2016 and 2021 proves that this method of phytoremediation is viable and effective in the recovery of soils contaminated with heavy metals.
Ultrasound-assisted grain hydration and its effect on starches: A review
Authors: Ponce-Quispe Gilmer , Siche Raúl
Published: December 2022

In the hydration of grains, it is sought to develop novel approaches to reduce the kinetic time and obtain better properties by taking advantage of the time to incorporate nutrients. This review seeks to publicize the potential of ultrasound in seed hydration and its effect on the properties of starches. It has been found that ultrasound accelerates the hydration and germination process in the grains without altering the properties of starch, and the extraction of alkaloids, it reduces the cooking time with ferrous sulfate, but at high temperatures, it hinders the effect of ultrasound. Adding sodium bicarbonate accelerates the softening kinetics, but slows down the hydration process. In quality parameters, zoning and thermal treatments cause an increase in the size of the granules and improve the rate of incorporation of water, obtaining better characteristics suitable for use in industry. Future studies could use other nutrients or salt solutions in the hydration process such as sodium bisulfate (NaHSO4), sodium bisulfite (NaHSO3) and ferrous fumarate (C4H2FeO4), as well as investigate other grains such as chickpeas, lentils and popping beans and Andean grains.
The psychosocial dimension of housing in Nunavik: does social support vary with household crowding?
Authors: Simard Charles-Olivier , Riva Mylene , Dufresne Philippe , Perreault Karine , Muckle Gina , Poliakova Natalia , Desrochers-Couture Mireille , Fletcher Christopher , Moisan Caroline , Fraser Sarah , Bélanger Richard , Courtemanche Yohann , Bignami Simona
Published: December 2022

Objectives

Studies show that living in overcrowded households can contribute to the erosion of social support, which is an important factor in health and well-being. In this study, we examine the relationship between household crowding and social support for Inuit living in Nunavik (hereafter referred to as Nunavimmiut), a region where housing shortages are considered a serious public health problem. We assess whether overcrowding is associated with lower levels of perceived social support and whether this association varies by gender and age group.

Methods

Cross-sectional data are from Qanuilirpitaa? the 2017 Nunavik Health Survey (N = 1306; aged 16 years and older). A perceived social support index was derived from answers to questions related to three different components of social support: positive interaction, emotional support, and love and affection. Associations between overcrowding (more than one person per room) and perceived social support were assessed using weighted linear and logistic regressions, adjusted for several factors. Sex- and age-stratified analyses were also conducted.

Results

Nunavimmiut report significantly lower levels of social support when living in overcrowded households, independently of other covariates. Analyses stratified by sex and age further show that the detrimental association between overcrowding and perceived social support is higher and stronger for men and older adults (both men and women 55 years and older).

Conclusion

Overcrowding is associated with lower levels of perceived social support, which is a key component of health for the general population and for Nunavimmiut. Future research should examine the factors creating stronger associations between overcrowding and lower social support for men and older adults.
Antagonismo de Purpureocillium sp. (cepa UdeA0106) con hongos aislados de cultivos de flores
Authors: Salazar-Moncada Diego A. , Jaramillo-Mazo Claudia , Vásquez-Restrepo Juliana , Ramírez Camilo , Cardona-Bustos Nadya L.
Published: December 2022

Estudios desarrollados en el grupo BIOMA de la Universidad de Antioquia, mostraron como el hongo Purpureocillium sp. (cepa UdeA0106) puede biocontrolar una plaga conocida como sínfilos (subfilo Myriapoda: clase Symphyla). Este trabajo buscó identificar géneros de hongos anamórficos, aislados de diferentes sustratos (sínfilos y suelos) para determinar la capacidad antagónica de estos, así como de cepas de una colección de hongos biocontroladores sobre Purpureocillium sp. (cepa UdeA0106). A partir de sínfilos se registraron 9 cepas distribuidas en 3 géneros, y en suelo, 17 cepas correspondientes a 10 géneros. Las pruebas de antagonismo consistieron en una prueba in vitro empleando la técnica de cultivo dual en cajas de Petri con agar sabouraud dextrosa (SDA) utilizando 16 cepas: 12 provenientes de los aislamientos y 4 del cepario del grupo BIOMA. Las variables evaluadas fueron el radio de crecimiento en los enfrentamientos y el porcentaje de inhibición del crecimiento radial (PICR) a los 7  y 14 días. El análisis se realizó con un modelo mixto lineal generalizado mediante Proc GLIMMIX SAS® de manera independiente. El hongo Purpureocillium sp. (cepa UdeA0106) fue inhibido por Volutella sp. (Vo.UdeA0109), Paecilomyces sp. Aislado 2 (Pa.UdeA0109) y Peyronella sp. (Pe.UdeA0108) (p < 0,001), mientras que el resultado no fue estadísticamente significativo con las cepas Beauveria sp. (Be.UdeA0109), Dendrodochium sp. (De.UdeA01109), Myrothecium sp. (Mi.UdeA0109), Paecilomyces sp. Aislado 1 (Pa.UdeA0109), Paecilomyces sp., aislado 3 (Pa.UdeA0209),  Lecanicillium sp. (Le.UdeA0109) y Purpureocillium sp. (Hy.UdeA0109). El análisis muestra que pueden presentarse interacciones entre cepas de hongos con resultados no seados a la hora de realizar actividades de control.
La tasa social de descuento y el medio ambiente
Authors: Correa Francisco
Published: December 2022

Este artículo tiene como objetivo analizar las principales metodologías planteadas para la determinación de la tasa social de descuento con el propósito de describir los principales elementos que permiten articular las consideraciones ambientales a las alternativas que existen para la determinación de esta tasa. Mediante la aplicación de un modelo económico agregado, que relaciona las externalidades y el descuento intertemporal, se obtiene la tasa social de descuento para Colombia en dos escenarios. El trabajo concluye que los hechos estilizados acerca de la evolución de los efectos ambientales pueden implicar una tasa de descuento más baja sistemáticamente en el tiempo, afectando de este modo no sólo los niveles de la tasa social de descuento sino también su perfil en el tiempo. Palabras clave: descuento, impactos ambientales, equidad intergeneracional, gasto ambiental, productividad marginal del capital. Clasificación JEL: D6, Q2, Q35
La experiencia colombiana bajo un régimen de fluctuación controlada del tipo de cambio: el papel de las intervenciones bancarias
Authors: Hernández Monsalve Mauricio A. , Mesa Ramón Javier
Published: December 2022

El comportamiento de la política colombiana de los últimos años, asociado con el conjunto de intervenciones ejercidas en el mercado de divisas, es el hecho estilizado que motivó este estudio. El objetivo de éste es medir el tamaño relativo de las intervenciones cambiarias durante 2004 y 2006, período de revaluación del peso, y calcular su efectividad en cuanto a los efectos sobre la media y la varianza de la tasa de cambio nominal. La determinación del tipo de cambio por medio de un modelo de balance de portafolio y el uso de índices de intervención en el mercado de divisas demuestran que las intervenciones del Banco de la República con miras a defender el régimen de flotación controlada, han tenido efectos pequeños y transitorios en el nivel y la varianza del tipo de cambio.   Palabras clave: intervenciones estilizadas, régimen cambiario, flotación controlada, mercado cambiario, tipo de cambio, modelo de portafolio. Clasificación JEL: E52, E58, F31, G11.   Abstract:  The behavior of Colombian politics over recent years, associated to the set of interventions on the exchange market, is the stylized fact that motivated this study. The objective is to measure the relative size of currency exchange interventions during 2004 and 2006, a period of appreciation of the peso, and to calculate its effectiveness regarding the effects over the mean and variance of the nominal exchange rate. The determination of the exchange rate through a portfolio balance model and the use of currency exchange market intervention indexes show that interventions of the Central Bank seeking to protect the controlled floating regime have had small and transitory effects on the level and variance of the exchange rate.   Keywords: stylized interventions, exchange regime, dirty float, exchange market, exchange rate, portfolio model. JEL classification: E52, E58, F31, G11.   Résumé :   L’un des fait stylisés de la politique économique colombienne des dernières années est son intervention sur le marché des devises. Dans ce contexte, l’objectif de cet article consiste, d’une part, à mesurer le poids relatif de ces interventions entre les années 2004 et 2006 car il s’agit d’une période d’appréciation du peso colombien et, d’autre part, à calculer l’efficacité de ces interventions sur la médiane et la variance du taux de change nominal. La détermination du taux de change à travers un modèle de balance de portefeuille et l’utilisation d’indices d’intervention dans le marché de devises, montre le rôle joué par la Banque Centrale (Banco de la Republica) lorsque celle-ci cherche à défendre un taux de change flottant contrôlé. Nous montrons que les interventions ont eu des effets moindres et transitoires dans le niveau et dans la variance du taux de change.   Mots clés: Interventions de la Banque Centrale, régime de change, marché des devises, taux de change flottant contrôle, taux de change modèles de portefeuille. Classification JEL: E52, E58, F31, G11.
Evaluación asimétrica de una red neuronal: aplicación al caso de la inflación en Colombia
Authors: Aristizábal Maria Clara
Published: December 2022

El objetivo de este trabajo es explorar la relación no lineal entre el dinero y la inflación en Colombia a través de una red neuronal artificial, utilizando información mensual de la variación del Índice de Precios al Consumidor y del agregado monetario M3, desde enero de 1982 hasta febrero de 2005. Las redes neuronales artificiales aparecen como una excelente alternativa para las autoridades monetarias de contar con los mejores modelos para pronosticar la inflación y guiar sus decisiones de política. El presente artículo incorpora algunas innovaciones en la modelación del dinero e inflación que permiten generar pronósticos más confiables, debido a que el modelo se aproxima con mayor exactitud a la realidad.   Palabras Clave: red neuronal artificial, no linealidad, unidad escondida, función de activación, rolling de pronósticos, función de pérdida asimétrica. Clasificación JEL: D87, C53.   Abstract:   The objective of the present work is to explore the non-linear relationship between money and inflation in Colombia through an artificial neural network using monthly information for the variation of the consumer price index and the monetary aggregate M3 since January 1982 through February 2005. Artificial neural networks turn up as an excellent alternative for monetary authorities to count on the best models to forecast inflation and guide their policy decisions. This article incorporates some innovations in money and inflation modeling that allow to generate more reliable forecasts given that the model approximates reality with greater accuracy.   Keywords: artificial neural network, non-linearity, hidden unit, activation function, rolling test, asymmetric lost function. JEL classification: D87, C53.   Résumé:   L’objectif de ce travail consiste à explorer la relation non linéaire entre la quantité de monnaie et l’inflation en Colombie à travers la technique des réseaux de neurones artificiels. Nous utilisons les statistiques mensuelles concernant la variation de l’indice des prix à la consommation et l’agrégat monétaire M3 entre janvier 1982 et février 2005. Les réseaux neuronaux artificiels constituent une excellente alternative pour les autorités monétaires en vue d’améliorer leurs modèles qui servent à anticiper l’inflation. Cet article intègre quelques nouveautés dans la modélisation de la quantité de monnaie et l’inflation. Cette modélisation permet d’établir des prévisions plus précises car elle se rapproche avec plus d’exactitude de la réalité économique.   Mots clés: Réseaux de neurones artificiels, unité cachée, fonction d’activation, Rolling test, fonction de perte asymétrique. Classification JEL: D87, C53.
Los servicios públicos domiciliarios en Colombia a la luz del modelo de Salida, voz y libertad de Albert Hirschman
Authors: Valencia Germán
Published: December 2022

En la década de 1990 los servicios públicos domiciliarios en Colombia pasaron por una reforma importante: se permitió la entrada del sector privado y se le dio participación a los usuarios en la vigilancia y control de estos servicios. Pero, dada la dimensión colectiva y el carácter monopólico que tienen la mayoría de estos servicios, fue necesario introducir una serie de mecanismos institucionales que permitieran al usuario defender su bienestar. El artículo analiza, a través del modelo de Salida, voz y lealtad propuesto por Albert O. Hirschman, los desarrollos institucionales, mostrando los avances y carencias que tiene el sistema en este sentido. El trabajo enfatiza en la opción de Voz como la única defensa real que tienen los usuarios ante fallas en el sistema y presenta algunas propuestas de reformas.   Palabras clave: Servicios públicos domiciliarios, economía política, acción colectiva, Albert Hirschman. Clasificación JEL: D18, D72, H42, K23, L13, L97, P16.   Abstract:   During the 1990s, household public services in Colombia went through an important reform: the entrance of the private sector was allowed and users could participate in the surveillance and control of these services. However, given the collective dimension and monopolistic character of most of these services, it was necessary to introduce a series of institutional mechanisms that allowed the user to defend his wellbeing. This article analyzes, through the exit, voice, and loyalty model proposed by Albert O. Hirschman, the institutional developments, showing the advances and deficiencies of the system in this area. The voice option is emphasized as the only real defense of users regarding failures of the system and some reform proposals are presented.   Keywords: household public services, political economy, collective action, Albert Hirschman. JEL classification: D18, D72, H42, K23, L13, L97, P16.   Résumé :   Les lois régissant les services publics en Colombie ont été réformés pendant les années 90. Ces réformes ont permis, d’une part, la participation du secteur privé et, d’autre part, la surveillance de ces services par les ménages. Ainsi, étant donné le caractère à la fois collectif et monopolistique des services publics, il a été nécessaire d’introduire un ensemble des mécanismes institutionnels, permettant aux ménages de sauvegarder leur bien-être. Cet article analyse, à travers le modèle Sorti, voix et loyauté d’Albert O. Hirschman, les qualités et les défauts des développements institutionnels mis en place. L’article met l’accent sur l’option Voix comme la seule défense possible des ménages face aux défaillances de ces mécanismes. On présente également quelques propositions de réforme.   Mots clés: services publics, économie politique, action collective, Albert Hirschman. Classification JEL: D18, D72, H42, K23, L13, L97, P16.
Estimating Volatility Returns Using ARCH Models. An Empirical Case: The Spanish Energy Market
Authors: Alberola Ricardo
Published: December 2022

Este artículo analiza las regularidades más comunes en las series de tiempo del rendimiento diario de las acciones del mercado de energía de España, desde un punto de vista empírico. Al ser una herramienta poderosa para modelar su volatilidad, ajustamos una selección de procesos de heterocedasticidad condicional autorregresiva (ARCH) a las series. Se encuentra que solo dos series tienen una relación significativa, aunque diferente, entre el rendimiento condicional esperado de la acción y su varianza condicional: Enagas, cuya relación es negativa y Cepsa, cuya relación es positiva. Se encuentra, además, que el mercado eléctrico ha sido el más volátil durante el período analizado.   Palabras clave: series financieras, acciones, rendimiento, riesgo, volatilidad, modelos ARCH, puntos de cambio estructural. Clasificación JEL: C22.   Abstract:   This paper analyzes the most common regularities of daily stock returns time series in the Spanish Energy Market from an empirical point of view. As they are a powerful tool, we fit a selection of developments of Autoregressive Conditional Heteroscedastic (ARCH) processes to the series in order to model their volatility. The paper finds that just two series have a significant and different relationship between the expected conditional stock return and its own conditional variance: Enagas (negative) and Cepsa (positive). It also finds that the electric market has been the most volatile market during the period under analysis.   Keywords: financial series, stock, return, risk, volatility, ARCH model, structural change points. JEL classification: C22.   Résumé:   Cet article analyse, du point de vue empirique, les fréquences les plus communes dans les séries de temps du rendement journalier des actions du marché espagnol de l’énergie. Etant donné qu’il s’agit d’un outil puissant pour modeler leur volatilité, nous avons ajusté les séries à travers une sélection de processus d’heterocedasticité conditionnelle autorégressive (ARCH). Nous trouvons qu’il n’y a que deux séries qu’on une relation significative mais différente entre le rendement conditionnel attendu de l’action et sa variance conditionnelle : il s´agit de Enagas dont sa relation est négative et Cepsa dont sa relation est positive. Nos trouvons également que le marché d’électricité a été parmi tous les plus volatil pendant la période d’étude.   Mots clés: séries financières, actions, rendement, risque, volatilité, modèles ARCH, points de changement structurel. Classification JEL: C22.