bluuebunny/crossref_metadata_2025 huggingface dataset:
Aprender a desobedecer, ¿una tarea necesaria para los futuros docentes?
Authors: Martínez-Scott Suyapa , Velasco Miriam Sonlleva , Aguado Roberto Monjas
Published: March 2022

Resumen En este trabajo analizamos el concepto de Educación para la desobediencia con el que acceden los estudiantes de Magisterio de la Universidad de Valladolid (UVa), España, a su formación inicial. De esta forma, pretendemos acercarnos a la percepción que tienen sobre el concepto los futuros docentes, encargados de la formación de las generaciones venideras. Una vez cursada la asignatura de Educación para la Paz y la Igualdad en el grado de Educación, en la que se forma a los estudiantes sobre los temas relacionados con la Educación para la desobediencia, valoramos si se produce un cambio en la concepción y actitudes sobre este tipo de educación. Para ello, llevamos a cabo un estudio de caso, durante diez cursos académicos, en el que empleamos 1.395 cuestionarios abiertos, seis entrevistas grupales a estudiantes, dos entrevistas individuales al profesorado y registros de observación no participante. Una vez llevado a cabo el estudio concluimos que existen graves carencias en la formación de los estudiantes sobre Educación para la desobediencia. Remarcamos la importancia de llevar a cabo este tipo de formación con los futuros docentes, ya que es una forma de que la solidaridad, la justicia y la transformación social se puedan globalizar a través de la educación y de actos pacíficos de desobediencia. Éste es un aspecto necesario para formar personas críticas con capacidad para transformar el mundo frente a las desigualdades e injusticias sociales.
Development and analysis of an automated performance code checking workflow
Authors: Arantes Eduardo , Andery Paulo Roberto Pereira , Andrade Flávio , Paes Daniel , Irizarry Javier
Published: March 2022

Abstract This study aimed to evaluate the applicability, accuracy, and challenges involved in the automated checking of design requirements specified by a Performance Code (PC) using a BIM (Building Information Modeling)-enabled model checker software application. Specific goals include: (a) definition of a workflow for the parameterization of a set of computational rules addressing part of the PC design requirements, (b) testing and evaluation of the proposed parameterization using a BIM model of a real large-scale housing project, and (c) comparison of accuracy and checking times between manual and automated methods. The research team developed and tested the automated checking of approximately one-third of the requirements. Findings indicate a substantial checking time decrease and an increase in the number of nonconformities detected through the automated method in comparison to the traditional technique of compliance assessment.
Processo decisório na compra de produtos imobiliários para moradia: uma revisão sistemática de literatura
Authors: Brito Larissa Santos , Brandstetter Maria Carolina
Published: March 2022

Resumo A atividade imobiliária está permeada por inúmeros riscos, os quais podem inviabilizar em determinado grau o investimento feito em um empreendimento. Entre esses, um dos mais impactantes é a falta de adequação do produto ofertado ao mercado que se pretende atingir. Nesse sentido, é primordial o entendimento do comportamento do consumidor-alvo de um empreendimento, o que torna fundamental a compreensão de como ocorre o processo decisório e de quais fatores e atributos impactam em sua escolha. Com esse intuito, a pesquisa apresenta uma revisão sistemática de literatura, tendo como objetivo principal a identificação de clusters para análise de conteúdo e uma proposta de classificação dos fatores que influenciam a decisão de compra de imóveis para fins de moradia. Os resultados obtidos indicam que as pesquisas realizadas acerca do assunto são recentes e vêm ganhando maior volume nos últimos anos, e que há baixa oferta de publicações brasileiras com tal abordagem. Poucos estudos relacionam todas as categorias de aspectos que afetam o processo decisório estudado, sendo os fatores relacionados ao consumidor os menos considerados.
Subsídios para cumprimento dos critérios de desempenho de sistemas hidrossanitários conforme a NBR 15575-6
Authors: Bottega Gabriela Schneider de Sousa , Pilz Silvio Edmundo , Costella Marcelo Fabiano
Published: March 2022

Resumo O artigo objetiva caracterizar o estágio atual dos sistemas prediais hidráulicos e sanitários (SPHS) frente à NBR 15575-6 e analisar os critérios de desempenho a fim de fornecer subsídios para projetistas, construtores e revisão da norma. O método contemplou cinco etapas: análise do cumprimento à norma por projetistas e construtoras, análise das informações fornecidas pelos fabricantes sobre durabilidade, coleta de dados de manifestações patológicas em SPHS, execução de ensaios in loco de responsabilidade da construtora, e análise dos critérios de desempenho. Os resultados indicam que as construtoras possuem baixo percentual de cumprimento da NBR 15575-6, enquanto os projetistas apresentam percentual maior. Quanto aos fabricantes, apenas 10% fornecem dados precisos de durabilidade de produtos. Quanto às manifestações patológicas, as mais recorrentes são vazamentos em bacias sanitárias, torneiras e chuveiros, e retornos de odores e espuma nas caixas sifonadas/ralos. Quanto aos ensaios, alguns são exequíveis, porém há dificuldades nos ensaios de estanqueidade das instalações de água quente e de esgoto sanitário e águas pluviais. Por fim, a principal contribuição está na identificação e discussão de critérios da norma que geram dúvidas na interpretação e aplicação.
Analysis of Brazilian public policies related to the implementation of circular economy in civil construction
Authors: Munaro Mayara Regina , Tavares Sérgio Fernando
Published: March 2022

Abstract ircular economy (CE) has been receiving increasing attention worldwide to increase the efficiency of the use of resources and minimize the generation of waste, aiming at a better balance and harmony between economy, environment, and society. It is an incipient concept, and its implementation is mainly associated with the support of public policies. Thus, the environmental and social impacts of the construction sector require alternatives to optimize the use of materials, encourage the recycling of construction waste (CW) and the correct disposal of non-reusable waste. This study aimed to analyze the Brazilian public policies that support the adoption of CE in the construction sector. It was possible to identify twelve public policies and their respective instruments, categorized into five guiding axes and according to the 9Rs framework of circular strategies. This study revealed that the adoption of CE is focused on reducing the CW, guided by normative instruments such as the National Policy for Solid Waste (NPSW), through the principles of shared responsibility and reverse logistics. The study contributes to the theoretical literature on public policies in support of CE and helps policymakers to create a circular policy plan to support the decision-making process in the construction industry and encourage the adoption of sustainable strategies.
Estação de envelhecimento natural para análise de degradação da absortância de telhas e monitoramento de temperaturas superficiais
Authors: Dornelles Kelen Almeida , Araújo Ana Carolina Hidalgo
Published: March 2022

Resumo O uso de materiais de baixa absortância solar no envelope construtivo tem se mostrado uma estratégia eficaz para otimizar o desempenho termoenergético de edificações em locais com alta incidência de radiação solar. No entanto, a capacidade refletiva dos revestimentos se modifica ao longo do tempo, devido à degradação pela ação das intempéries e à deposição de material particulado, com prejuízos ao desempenho térmico da vedação ao longo de sua vida útil. Assim, determinar os efeitos da degradação da absortância solar tornou-se primordial para prever a capacidade de manutenção das propriedades refletivas de telhas e tintas com o tempo. Com o objetivo de contribuir com pesquisas nessa temática, este artigo apresenta o projeto, construção e operação de uma estação de envelhecimento natural para avaliação da degradação da absortância solar de telhas e revestimentos expostos ao tempo, em conjunto com o monitoramento simultâneo e contínuo de temperaturas superficiais com termopares. Os resultados obtidos para 28 telhas expostas por 2 anos indicam forte correlação (R² = 0,81) entre as temperaturas superficiais e a absortância solar ao longo do tempo, assim como o potencial de uso da estação de envelhecimento natural para análise conjunta da degradação da absortância e o desempenho térmico dos revestimentos.
Correlation between natural and artificial aging in particleboards
Authors: Silva Marcio Rogério da , Almeida Tiago Hendrigo de , Almeida João Paulo Boff , Nascimento Maria Fátima do , Almeida Diego Henrique de , Aquino Vinicius Borges de Moura , Christoforo André Luis , Lahr Francisco Antonio Rocco
Published: March 2022

Abstract The main objective of this work was to establish a correlation between natural aging with artificial aging in medium density particleboards produced with polyurethane resin of castor oil and Pinus sp. For such correlation, climatological parameters at São Carlos city, São Paulo state Brazil were used. The established correlation was that 20 cycles would be proportional to the same degradation of two months of exposure under natural aging. The relation between physical and mechanical properties with the effects provided by number of months (M) on the natural aging with number of cycles (Nc) on the artificial aging was obtained with cubical polynomial regression models. In general, for physical properties, 20 Nc represents 7 to 8 months and for mechanical properties, 11 to 12 months, with exception to internal bonding, with 8 months of natural aging. The equations which best represent the relation between Nc and M were thickness swelling at 2h and water absorption at 2 h and 24 h, with R² above 93%.
Numerical simulation of wind-driven ventilation of a three-generic low-rise building in various geometrical configurations
Authors: Nascimento Anderson Viana do , Bono Gustavo
Published: March 2022

Abstract Natural ventilation is the main passive strategy for thermal comfort inside buildings and renewal of the air, making it healthier. In recent decades, Computational Fluid Dynamics has proven to be an efficient tool for estimating natural ventilation. The objective of this work was to study the ventilation from the action of the wind inside models of low-rise buildings to observe how geometric conditions influence the topology of the flow and volume flow ratesusing the open source software OpenFOAM. In order to verify and validate the software, a 3D building model with openings on opposite faces was used. Subsequently, arrays of three buildings were studied albeit considering the problem as two-dimensional. In the arrangements, three different terrain slopes and four distance values between buildings were tested. The results show that ventilation in the second and third buildings was gradually recovered with an increase in separation and terrain slope, although the values obtained in the first building were not reached.
Patrones de publicación en ciencias sociales y humanidades en Argentina: multilingüismo, regionalización y evaluación académica
Authors: Vasen Federico
Published: March 2022

A partir de una muestra de investigadores de historia y sociología en Argentina, se analizan las características de su producción académica en el periodo 2007-2016 en lo referido a los formatos más utilizados, los idiomas más frecuentes y el país de edición de las revistas. Al respecto se concluye que las formas de difusión ligadas a la investigación aplicada están más presentes en sociología que en historia. La proporción de libros se ubica en torno al 10%, los capítulos de libro entre el 30 y 40% y los artículos oscilan entre el 45% y el 60%. El español es el idioma más elegido, y representa el 92% en historia y el 89% en sociología. La proporción de autores que publican en inglés asciende sostenidamente en ambas disciplinas. A diferencia de lo que sucede en historia, en sociología las revistas iberoamericanas han ganado importancia frente a las nacionales. La publicación en revistas globales ocupa entre el 10% y el 15%. En la discusión se pone en relación estas tendencias con los criterios de evaluación, que en el caso argentino no han establecido premios para la publicación en revistas de corriente principal. A partir de los datos, se señala la importancia de analizar las diferencias entre disciplinas dentro del campo de las ciencias sociales y las humanidades. En el caso estudiado, la evidencia encontrada respecto a la globalización de las prácticas de publicación es acotada. Sín embargo, sí puede observarse una fuerte tendencia reciente en las ciencias sociales a la regionalización.
Seismic behaviour of concrete-to-concrete interfaces subjected to combined shear and bending moment
Authors: Cavaco Eduardo , Almeida Tiago , Camara José
Published: March 2022

Ductility of reinforced concrete (RC) connections is of paramount importance in seismic regions with regard to energy dissipation. Research has suggested that the presence of concrete-to-concrete interfaces subjected to combined shear and bending may reduce the ductility of RC beams under monotonic loading owing to slippage along the interfaces. In this paper, the seismic behaviour of RC beams with concrete-to-concrete interfaces is experimentally investigated by submitting specimens to cycles of reverse imposed displacements with growing amplitude. Concrete-to-concrete interfaces were located at the hogging region, to recreate a practical situation of the precast construction where continuity between precast elements is ensured by localised casting of joint connections in situ. Three types of casting interfaces were studied: (i) vertical and unreinforced, (ii) vertical and reinforced and (iii) diagonal and unreinforced. The results obtained were compared with those of a reference specimen produced without casting interfaces. Results show that the presence of casting interfaces do not reduce the specimens’ maximum strength but can reduce the percentage of cycles sustained after yielding, up to failure, by 9% to 15%. Ductility, measured in terms of the ratio between ultimate and yielding displacements, was reduced by 30%. Interface reinforcement and interface direction had a negligible influence on the specimens’ behaviour.
Dynamic monitoring of a tunnel-like masonry structure using wireless sensor networks
Authors: Bartoli Gianni , Betti Michele , Girardi Maria , Padovani Cristina , Pellegrini Daniele , Zini Giacomo
Published: March 2022

The application of wireless sensor network technology for long-term monitoring of a historic tunnel-like masonry structure in Italy is described. The monitoring was performed within the activity of a research project aimed at providing a general framework to check the structural health of heritage structures and detect, in real time, any potential damage that may compromise their safety. The selected case study (a tunnel-like masonry structure) represented a challenging experiment, both in terms of the type of structure itself and the technical solution employed for installing the monitoring system. After a brief description of the installed monitoring system and the design of the sensor layout, the lessons learned after 1 year of monitoring are summarised.
Acute Kidney Injury Associates with Long-Term Increases in Plasma TNFR1, TNFR2, and KIM-1: Findings from the CRIC Study
Authors: McCoy Ian E. , Hsu Jesse Y. , Bonventre Joseph V. , Parikh Chirag R. , Go Alan S. , Liu Kathleen D. , Ricardo Ana C. , Srivastava Anand , Cohen Debbie L. , He Jiang , Chen Jing , Rao Panduranga S. , Hsu Chi-yuan
Published: March 2022

Significance Statement

Levels of TNF receptors 1 and 2 (TNFR1 and TNFR2) and kidney injury molecule 1 (KIM-1) vary considerably among patients with CKD; those with higher levels have faster subsequent disease progression. The reasons why some individuals have higher levels of biomarkers of inflammation and injury are unknown. In this observational cohort study, the authors investigated whether these higher biomarker levels reflect effects of prior episodes of AKI. They found that levels of TNFR1, TNFR2, and KIM-1 in banked plasma samples increased after AKI, and these elevations persist for months, a longer timeframe than examined in prior studies. These findings may provide insight into the pathophysiology of kidney disease progression and the potential role of AKI episodes punctuating the course of CKD.

Background

Some markers of inflammation—TNF receptors 1 and 2 (TNFR1 and TNFR2)—are independently associated with progressive CKD, as is a marker of proximal tubule injury, kidney injury molecule 1 (KIM-1). However, whether an episode of hospitalized AKI may cause long-term changes in these biomarkers is unknown.

Methods

Among adult participants in the Chronic Renal Insufficiency Cohort (CRIC) study, we identified 198 episodes of hospitalized AKI (defined as peak/nadir inpatient serum creatinine values ≥1.5). For each AKI hospitalization, we found the best matched non-AKI hospitalization (unique patients), using prehospitalization characteristics, including eGFR and urine protein/creatinine ratio. We measured TNFR1, TNFR2, and KIM-1 in banked plasma samples collected at annual CRIC study visits before and after the hospitalization (a median of 7 months before and 5 months after hospitalization).

Results

In the AKI and non-AKI groups, we found similar prehospitalization median levels of TNFR1 (1373 pg/ml versus 1371 pg/ml, for AKI and non-AKI, respectively), TNFR2 (47,141 pg/ml versus 46,135 pg/ml, respectively), and KIM-1 (857 pg/ml versus 719 pg/ml, respectively). Compared with matched study participants who did not experience AKI, study participants who did experience AKI had greater increases in TNFR1 (23% versus 10%, P<0.01), TNFR2 (10% versus 3%, P<0.01), and KIM-1 (13% versus −2%, P<0.01).

Conclusions

Among patients with CKD, AKI during hospitalization was associated with increases in plasma TNFR1, TNFR2, and KIM-1 several months after their hospitalization. These results highlight a potential mechanism by which AKI may contribute to more rapid loss of kidney function months to years after the acute insult.
Inventario de las Angiospermas de San Miguel Tolimán, Querétaro, México
Authors: González-Adán María De Los Ángeles , Jimenez-Sierra Cecilia L. , Hernández-Cárdenas Rodrigo A. , Serrato-Díaz Alejandra , Calderón Contreras Rafael , Martínez-Adriano Cristian A.
Published: March 2022

Antecedentes: San Miguel Tolimán, en el municipio de Tolimán, Querétaro, pertenece a la región prioritaria de conservación Sierra Gorda-Río Moctezuma. En el área a lo largo del río Tolimán se encuentra vegetación de bosque de galería (BG) colindando con el matorral xerófilo (MX); el sitio carece de un inventario de su flora.
Preguntas: ¿Cuál es la riqueza de angiospermas del MX y el BG?, ¿Cuál es el porcentaje de especies nativas, endémicas y en riesgo en ambas comunidades?
Especie de estudio y descripción de datos: Lista de angiospermas del área.
Sitio de estudio y fecha: MX y BG de San Miguel Tolimán, municipio de Tolimán, Querétaro, México; noviembre 2017 a septiembre 2018.
Método: Muestreos bimensuales de angiospermas durante un año en 25 ha/comunidad.
Resultados: Se reconocieron dos tipos de vegetación: MX y bosque de galería perturbado (BGP). Se registraron 131 especies: 54 en el MX (19 endémicas y 16 en riesgo) y 79 en el BGP (12 exóticas; 8 endémicas y 9 en riesgo), con dos especies compartidas entre ambas comunidades. En el MX, las familias Asteraceae y Cactaceae fueron las más diversas y en el BGP Asteraceae seguida por Poaceae y Malvaceae. En ambas comunidades las herbáceas seguidas por las arbustivas fueron las formas biológicas con mayor número de especies.
Conclusiones: Este estudio señala la gran diversidad de especies presentes en un área relativamente pequeña y constituye un antecedente para priorizar la conservación de los recursos vegetales presentes en esta zona.
Visiones y experiencias alrededor de las infancias y las políticas públicas en contexto de conflicto armado: caso Antioquia
Authors: Arroyo Ortega Adriana , Vásquez Aristizábal Dayana , Mejía Gaviria Sara María , Zuluaga Aristizábal Lillana
Published: March 2022

Objetivo: Comprender cuáles son los marcos conceptuales que sustentan las políticas y programas de atención a la niñez en contextos de conflicto armado. Metodología: Tiene un enfoque cualitativo, fundamentado metodológicamente en la hermenéutica. Se desarrollaron entrevistas a decisores y expertos en políticas públicas del departamento de Antioquia. Resultados: Se encontraron visiones diversas alrededor de los niños y las niñas centradas algunas en la perspectiva de derechos y otras en la protección de ellos y ellas. Conclusiones: Las plurales formas de vivir la infancia de niños y niñas no están contempladas aún en las políticas públicas que les afectan, así como tampoco se han tenido en cuenta sus voces en las mismas.
Los fondos rotatorios de economía solidaria como estrategia de movilización social para la construcción de paz en la región del Magdalena Centro
Authors: Bedoya Franco Viviana
Published: March 2022

Objetivo: Este artículo presenta las estrategias de movilización social para la construcción de paz asociadas a los Fondos Rotatorios de Economía Solidaria (FRES) en las comunidades del Magdalena Centro (2010 - 2014). Metodología: La investigación tuvo un enfoque metodológico de carácter exploratorio, empírico, descriptivo y analítico. Resultados: Los FRES en las comunidades favorecen la tranquilidad de las familias, el desarrollo de competencias en los pobladores y la autogestión, por lo tanto se convierten en una estrategia propicia para la movilización social y la transformación a través del intercambio de experiencias que se constituyen en escenarios apropiados para el encuentro, el diálogo y la expresión de las comunidades. Conclusión: La sostenibilidad de los FRES va asociada al compromiso, la solidaridad y el fortalecimiento de la cultura local, igualmente al trabajo comunitario.
Trabajo social y trabajo: una aproximación al debate
Authors: Ramírez Duarte Diana
Published: March 2022

Objetivo. Realizar una aproximación al debate que se ha desarrollado en el trabajo social brasileño entre algunos autores y autoras, específicamente Iamamoto, Lessa y Costa, sobre la relación entre el trabajo social y el trabajo, con base en la teoría social de Marx, a partir de la necesidad de analizar los límites y las posibilidades del trabajo social en la construcción de una sociedad emancipada, tanto en el ámbito de la intervención, como en el ámbito de la producción teórica. Discusión. Se analizan los postulados diversos, y en algunas ocasiones contradictorios, de estos/as autores/as, a partir de cuatro puntos centrales identificados: trabajo abstracto - trabajo concreto; proceso de trabajo; trabajo productivo - trabajo improductivo; y asalariados-proletariado. Conclusiones. Se ubica al trabajo social en el complejo de la reproducción social; este no puede ser considerado como trabajo concreto,  aunque sí como trabajo asalariado, que, según las circunstancias concretas, puede producir plusvalía.
La dimensión ético-política del trabajo social
Authors: Valencia Orrego Marisol
Published: March 2022

Objetivo. Analizar la dimensión ético-política del trabajo social a partir de los fundamentos de la dimensión teórico-metodológica en la contemporaneidad del trabajo social en Brasil. Metodología. Se realiza el análisis bibliográfico de la ética y la política, exponiendo los debates en torno de la construcción de los proyectos colectivos profesionales que sustentan proyectos de sociedad en los que la profesión de trabajo social se inserta. Resultados. Se expuso la relación entre fundamentos teóricos de la ética en función del cotidiano de la vida social en el capitalismo, la realidad social y la praxis, así como la influencia de la alienación y la auto-alienación de las clases sociales, a partir de de autores como Agnes Heller y Adolfo Sánchez Vásquez, problematizando el trabajo profesional en el modo de producción capitalista. Conclusión. El reconocimiento del poder colectivo como competencia profesional que debe consolidarse en función de un proyecto ético-político crítico.
Trabajo social y lucha antirracista, antipatriarcal y anti-imperialista: una actitud política necesaria
Authors: Machado Gouvêa Marina , Carduz Rocha Camila
Published: March 2022

El objetivo es caracterizar a la división sexual/cis-hetero-binario-generificada del trabajo, la división racial del trabajo y la división territorial/internacional del trabajo como dimensiones indisociables de la división social del trabajo en el capitalismo. Metodológicamente asume al materialismo históricodialéctico y ubica en la racialización/etnización, en la cis-hetero-binário-generificación y en la dependencia, la raíz del racismo, la misoginia, la bi, lesbo, trans y homofobia y la xenofobia. Hace una revisión crítica de datos sobre la realidad de NuestrAmérica y trae el ejemplo de la unidad de luchas en el caso de las mujeres. Concluye sobre la imprescindibilidad de la lucha antirracista, antipatriarcal y anti-imperialista para la construcción del Trabajo Social crítico.
Narrativas del conflicto armado colombiano en el escenario escolar. Estado del arte
Authors: Cardona-Cardona Ángela Maritza , Sánchez-Agudelo Paula Vanessa
Published: March 2022

Objetivo. Presentar la indagación temática que se ha realizado sobre el tema de las narrativas del conflicto armado colombiano en el escenario escolar. Método. Se utilizó el método del análisis de contenido. Resultados. Los resultados muestran tendencias de investigación con relación a la perspectiva teórica del enfoque narrativo: el mundo que habitamos está configurado por relatos. Otra tendencia es el papel que tiene el escenario escolar en la transmisión de la historia, los diferentes retos y dilemas que se le presentan con relación a ¿qué historia enseñar? y las voces de los jóvenes, las cuales evidencian diversas formas de comprensión del conflicto armado, voces que interpelan las versiones dominantes y voces que reproducen narrativas dominantes caracterizadas por el estereotipo, el miedo. Se reconoce el importante papel de la tecnología y los medios de comunicación en la construcción de narrativas. Conclusión. Se tienen en cuenta varios retos, el desafío que tiene la escuela en la articulación de otras voces en el escenario escolar, la necesidad de transformar las visiones fragmentarias que sobre el país se tienen, en relación a quiénes han sido afectados directamente por el conflicto y quiénes no, y por último seguir indagando las narrativas que se construyen desde los medios de comunicación.
Los sentidos de la acción comunitaria en las organizaciones de víctimas: una reflexión desde la hermenéutica fenomenológica
Authors: Quintero-Gaviria Jaime Andrés , Herrera Valentina
Published: March 2022

En el siguiente artículo ofrecemos algunas reflexiones derivadas de un proceso de investigación en torno a las capacidades políticas para las transiciones en los territorios afectados por el conflicto armado colombiano. Estas reflexiones se refieren a una lectura de la acción comunitaria de las organizaciones de víctimas de Samaná (Caldas, Colombia) a partir de la hermenéutica fenomenológica de Paul Ricoeur. Así hemos llegado a identificar tres símbolos para una lectura de la acción comunitaria: el sujeto víctima que se ha convertido en sujeto superviviente; la emergencia de la alteridad no hegemónica; y el yo como otro. Conclusión: la vida de los sujetos víctimas asociados a este tipo de organizaciones está mediada por la acción comunitaria y sus respectivas narrativas.
Factores asociados a la satisfacción laboral del personal administrativo de una universidad pública en la ciudad de Manizales: un análisis preliminar
Authors: Lina Victoria  , Osorio-Barreto Daniel , Díaz-Jurado Natalia
Published: March 2022

Objetivo. Este artículo presenta los resultados de investigación en cuanto a los factores asociados a la satisfacción laboral del personal administrativo de una universidad pública, teniendo en cuenta los aspectos sociodemográficos y las condiciones de contratación y demás factores laborales que caracterizan a este tipo de empleados, por medio de la identificación de asociaciones entre variables sociodemográficas y variables propias de la institución y del puesto de trabajo. Métodos y datos. Estudio cuantitativo de alcance descriptivo y basado en datos de corte transversal con cálculo de muestra para población finita y variables de naturaleza cualitativa. Resultados. Se realiza un análisis descriptivo de las variables incluidas en el instrumento de la mano de tablas de contingencia para identificar la presencia de asociación entre estas. Conclusiones. Los factores asociados a la satisfacción laboral corresponden a sexo, edad, tipo de vinculación y antigüedad. De igual forma, se destacan los niveles altos de satisfacción que presenta el personal administrativo con el tipo de tareas que desarrollan, el modo de ser y estilo de dirección de los superiores, el modo de ser y comportamiento de los colegas y el trabajo en general, lo cual no es tan representativo con el salario ni con la promoción u oportunidad de ascenso.
Representaciones sociales acerca de la paz en madres de Bogotá, aportes hacia su construcción desde la familia
Authors: Sarmiento Riaño Xiomara Steffy , Chávez Plazas Yuri Alicia
Published: March 2022

El objetivo del artículo es analizar las representaciones sociales (RS) que madres en Bogotá construyen sobre la paz desde sus prácticas cotidianas y relaciones con sus hijos de 11 a 14 años. El método fue un diseño cualitativo, con entrevistas y análisis de contenido sobre creencias, prácticas decuidado y socialización orientadas a la paz. Teóricamente siguió a Jodelet, quien las define como una forma de conocimiento desde el sentido com ún con amplia capacidad para interpretar y explicar la realidad social, para este caso, la paz en los ámbitos familiar y cotidiano. En resultados se encontró que aunque las madres reconocen la familia como espacio para la construcción de la paz, es poca la perspectiva política que le otorgan desde la democracia, la ciudadanía y los acuerdos de La Habana. En conclusión, la paz se asocia con la transmisión de valores como el respeto, la empatía y la tolerancia.
Apoyo social, resiliencia, estrés percibido, estrés postraumático, ansiedad, depresión y calidad de vida relacionada con la salud en líderes comunitarios víctimas del conflicto armado en los Montes de María, Sucre, Colombia
Authors: Ortegón Twiggy Malena , Vinaccia Stefano , Quiceno Japcy Margarita , Capira Andrea , Cerra David , Bernal Soraya
Published: March 2022

Objetivo. El objetivo de este estudio fue evaluar las relaciones entre variables psicológicas positivas y negativas asociadas a salud mental y calidad de vida en líderes víctimas del conflicto armado en los Montes de María, Sucre, Colombia. Metodología. Se basó en un paradigma cuantitativo. Participaron 28 líderes campesinos a quienes se aplicaron las escalas de apoyo social, de afrontamiento resiliente, de estrés percibido, de trastorno por estrés postraumático, de ansiedad y depresión y de calidad de vida relacionada con la salud. Resultados. Hubo niveles favorables en todas las variables del estudio y los análisis de regresión lineal muestran que la depresión tiene un peso negativo sobre la calidad de vida física y la ansiedad y el estrés percibido lo tienen sobre la calidad de vida mental. Conclusión. La calidad de vida física y mental puede ser vulnerada por las emociones negativas en personas que han vivido violencia en el marco del conflicto armado colombiano.
The Militant Listener: Reading Mongane Wally Serote’s Sikhahlel’ u-OR alongside Walter Benjamin’s Theses on the Philosophy of History
Authors: Ferguson Retha
Published: March 2022

The Militant Listener: Reading Mongane Wally Serote's Sikhahlel' u-OR alongside Walter Benjamin's Theses on the Philosophy of History In Sikhahlel' u-OR: A Praise Poem for Oliver Tambo, Mongane Wally Serote presents an unflinching yet delicate meandering through the questions, reflections and provocations resistance history offers up through O. R. Tambo's life. As Ciraj Rassool points out, in this work Tambo appears not as an individual, but as an integral node in a web connecting various lives.1 This counter-neoliberal interpretation of Tambo's life offers what Michael Löwy calls 'a heterodox form of the narrative of emancipation' rebuilding the struggle hero narrative along a decentred framework.2 By radically dislodging this narrative, Tambo is portrayed as the 'non-iconic icon' he was esteemed to embody, and in this move, the poem, notably, points to the dearth of dialectic politics, both in our quotidian praxis, and the commemoration of others.3 Aptly, Serote's work contributes to what Souleymane Bachir Diagne and Jean-Loup Amselle describe as a 'total decentring of all thought, one that rejects all "centrisms" and highlights instead branchings and connections, transfers, analogies and reciprocal influences between cultural places and intellectual fields that may be distant but are not distinct in space and time'.4 To this end, the poem presents us with a constellation of historical actors who flicker on the horizon, beckoning us to engage in the labour of freedom ('here we go again / the hour demands us to be daring once more / to emerge from a possible storm').
Another Image of 'Community' at the South End Museum
Authors: Smith Michelle
Published: March 2022

This paper considers some of the curatorial devices used in exhibitions at the South End Museum in Gqeberha (formerly Port Elizabeth). The South End Museum, which opened on 3 March 2001, is modelled in several respects on the District Six Museum in Cape Town: it, too, is an urban-based, self-defined 'community museum' constituted around the histories of the apartheid Group Areas Act and the implementation of forced removals. Like many post-1994 museums in South Africa, the South End Museum relies on photographs for their displays, whilst also making use of maps, a mural and reenactment. The paper considers the ways in which these different displays touch, recall, reflect and activate one another. Keeping in mind that the notion of 'community' in South Africa bears the burden of being raced by its apartheid and colonial pasts, and abiding by the spectrality that is constitutive of the image, the paper grapples with the haunted space of 'community museums' in the Eastern Cape. While the South End Museum deploys some of the same curatorial devices as the District Six Museum, and deals with related histories of forced removal, South End, it is argued, brings the relation between race, indigeneity and 'ruin' within 'community museums' into fleeting focus.
Pondo Blue(s): Working through Sounding a Kind of Blue(ish) History of an Eastern Cape
Authors: Mtshemla Sinazo
Published: March 2022

Pondo Blues, is a song by Eric Nomvete and the Big Five, a group that came from East London to perform at the Moroka-Jabavu Stadium as part of the 1962 Cold Castle jazz festival. Although the song has acquired symbolic meaning and recognition as one of the 'classics' in South African jazz, prevailing understandings of the song have framed it as a traditional drinking song as well as a song lamenting the Mpondo revolt, where both these understandings have tied it deeply to the rural Eastern Cape. This paper tracks the sonic and social relationships of disarray, change and improvisation that come together to rehearse Pondo Blues across space and time, and atmospheres of history which move us away from iPhondo as the provincial Eastern Cape, which is tied up with the rural, the ethnic, the backward countrified folk and the local towards a more expansive and infinite sense/s of pasts and futures.
A new preconcentration technique for the determination of PGMs and gold by fire assay and ICP-OES
Authors: Masasire A. , Rwere F. , Dzomba P. , Mupa M.
Published: March 2022

Accurate determination of platinum group metals (PGMs) and gold (Au) has always proven to be a difficult task, due to their low concentrations in platiniferous ores. The most common preconcentration technique used in analysis of these metals is fire assay with a flux containing nickel or lead. This technique can be improved by using co-collectors. Here we hypothesise that Fe, Co, and Cu can be used as co-collectors to enhance separation and preconcentration of PMGs and gold by fire assay. To test this hypothesis, geological exploration samples from Siyanda Union Mine (Northam, South Africa) were analysed by an inductively coupled plasma-optical emission spectrometer (ICP-OES) for PGMs (Pt, Pd, and Rh) and Au. A control sample (certified reference material AMIS 0426) was also analysed by the same technique. The PGM and Au recoveries from the control sample ranged from 83% to 105% for all three co-collectors, with relative standard deviations less than 10% for the control sample and 7% for the geological samples. The PGM and Au recoveries by Fe and Co co-collectors were modestly higher than that of the Cu-collector. These results indicate that Fe and Co are better co-collectors than Cu, presumably due to the loss of analyte when using Cu. Taken together, Fe and Co co-collectors can be viable alternatives for analysis of PGMs and gold using the fire assay method.
The concentration of rare earth elements from coal fly ash
Authors: Abaka-Wood G.B. , Addai-Mensah J. , Skinner W.
Published: March 2022

Recently, coal fly ash has become a potential candidate as a secondary resource of rare earth elements (REE). In this investigation, we studied the recovery of REE from fly ash from a commercial power plant. The specific aim was to assess the technical feasibility of recovering REE from the coal fly ash using conventional preconcentration methods, including gravity separation, magnetic separation, and froth flotation. The experimental results revealed that flotation achieved major gains in REE recovery and upgrading. However, during gravity and wet magnetic separation tests, the bulk of REE reported to the tailings. The results showed significant variations in the performance of the various beneficiation methods investigated. This study has confirmed that existing physical separation methods could be used to recover REE from coal fly ash prior to hydrometallurgical and pyrometallurgical processing, although some challenges persist.
Activity-Based Checks (ABCs) of Pain: A Functional Pain Scale Used by Surgical Patients
Authors: Ho Bao Vincent , Beatty Simon , Warnky David , Sykes Kevin , Villwock Jennifer
Published: March 2022

Introduction. Increased rates of surgery, combined with concerns about high-risk pain medications, have highlighted the need for improved methods of meaningfully assessing pain. In response to lack of medical context and functional data in existing scales, the Activity-Based Checks (ABCs) was developed.
Methods. This prospective, cohort study was deployed at a single-institution, academic center. The primary outcome was to correlate the ABCs to the 0-10 numeric rating scale (NRS) in postoperative general surgery patients. Secondary outcomes included assessing the impact of patient factors and prescribing patterns on opioid consumption, in milligrams of morphine equivalents (MME) after discharge.
Results. The function that correlated most to the NRS at discharge was “Out of Bed to Chair”. Indicators of better mental health were inversely correlated with MME consumption. Interestingly, the largest predictor of MME taken was MME prescribed. Over 40% of prescribed opioids goes unused.
Conclusions. Functional pain scales, like the ABCs, may be useful adjuncts to evaluate pain. Individual functions, e.g., “Out of Bed to Chair” may be of particular importance. Clinicians must be aware that the strongest predictor of MMEs taken by patients was MMEs prescribed, highlighting the importance of better pain assessments and opioid stewardship.
Comparative Analysis of Topical Versus Intravenous Administration of Epsilon-Aminocaproic Acid on Blood Management in Total Knee Arthroplasty
Authors: Lancaster Benjamin , Wendling Alexander , Poppe Tanner , Zackula Rosey , Massey Wade , Cusick Robert , Pappademos Paul , Hearon Bernard
Published: March 2022

Introduction. Although the use of antifibrinolytics to reduce perioperative blood loss during total knee arthroplasty (TKA) has shown unequivocal benefit in regard to blood conservation, the best route of administration remains in question. We tested the hypothesis that topical delivery of epsilon-aminocaproic acid (EACA) was superior to intravenous (IV) administration in the setting of primary TKA.
Methods. This cross-sectional study included a 6-year retrospective chart review of TKA patients done by a single surgeon.  We compared post-operative hemoglobin levels and the incidence of blood transfusions among 3 patient subgroups:  no EACA, topical EACA, or IV EACA. Key outcome measures included postoperative hemoglobin, need for postoperative transfusion, and length of hospital stay.
Results. Of the 668 patients included in this study, 351 (52.5%) received IV EACA, 298 (44.6%) received topical EACA, and 19 (2.8%) received no EACA. For the 3-way comparisons, significant differences were observed for postoperative mean hemoglobin on day 1 (p < 0.001), day 2 (p < 0.001), and day 3 (p = 0.004) with consistently higher means for participants in the topical group. Eight patients required transfusion in the IV EACA group, but none were needed in the topical EACA group (p = 0.027). Length of stay was shortest for patients in the topical group with 66% staying hospitalized for two days, while 84% of the IV group remained hospitalized for three days (p < 0.001).
Conclusions: The topical delivery of EACA is superior to IV administration with respect to blood conservation for patients undergoing primary TKA.
In vitro rooting and the influence of four types of substrates on the acclimatization of Queñoa Polylepis rugulosa Bitter
Authors: Mollohuanca Carmen , Bustamante Edwin , Mayta Luis , Bardales Roxana
Published: March 2022

Queñoa is a forest species of great importance and its propagation in a conventional way is a limitation when it is desired to produce it on a large scale, for which the micropropagation technique was used, with the objective of evaluating the effect of the combination of auxin and cytokinin in the rooting of Polylepis rugulosa Bitter buds, establishing 12 treatments with different concentrations of IBA and BAP, likewise during acclimatization, the influence of four types of substrates based on ground, peat and cow manure in different proportions was tested, where seedlings were transplanted rooted, which were subjected to greenhouse conditions. The best response in the rooting percentage was 98%, this result was obtained with the concentration of 0.5 µM AIB + 0.05 µM BAP, which presented 1.9 roots and an average root length of 7 mm. A survival percentage of 87.5% was reached during acclimatization; cow manure-based treatments showed higher values ​​regarding the variable’s seedling height, number of leaves and root length. Therefore, the result will make it possible to mass produce plants and initiate conservation and recovery programs.
Effect of temperature on the growth of Juveniles of Oreochromis niloticus tilapia in an aquaculture exchange system (RAS)
Authors: Kaneshima Kenyi , De La Cruz Katicsa , Ponciano Miguel , Toledo Nicole , Culquichicón Zoila
Published: March 2022

The water temperature of the Oreochromis niloticus farming is a limiting factor for its development, it slows down its metabolism at low temperatures, affecting its physiological processes. The objective of this work is to compare the development of juvenile Oreochromis niloticus at different temperatures, determine the physicochemical parameters, and record growth in weight and length. The study had two treatments: A (TA) at 25 °C and B (TB) at 21 °C, biometric samplings were carried out to determine the total length and weight, the number of deaths was recorded daily to obtain the survival percentage and mortality, statistical evaluation was performed through ANAVA and Duncan. Dissolved Oxygen was 4.3 mg/l and 4.1 mg/l in each treatment; the pH was kept above 7. It was determined that the tilapia has an isometric growth through the statistical analysis of Length-Weight and the t-student test. Treatment A achieved better results in weight (13.49 g) and length (9.12 cm). The FCF was 1.4 and 2.1 in each treatment. The FCEs were 71.6 and 46.7% in each treatment. The highest mortality was registered with TD (14.68%). It was determined that there are no significant differences in the growth of length and weight of the fish at 21 °C and 25 °C.
Environmental damage to the Peruvian marine littoral caused by the oil spill (January 2022) at the La Pampilla refinery
Authors: Pulido Víctor , Cruz José , Arana César , Olivera Edith
Published: March 2022

An environmental disaster of incalculable dimensions was caused by the oil spill that occurred on Saturday, January 15, 2022, when the unloading pipeline of the Italian tanker Mare Dorium ruptured during its loading and unloading activities in the marine littoral of La Pampilla Refinery. The objective of the study was to make a first approximation of the environmental damage produced 30 days after the oil spill at the La Pampilla Refinery. It has been elaborated based on documentary analysis, information from documents of public agencies and scientific articles from indexed bases. The oil spill has spilled 11,900 barrels that have moved in a northerly direction due to the effect of marine currents, the area of oil expansion is 1,739,000 m2, more than 24 beaches are contaminated, and the area impacted by the oil is 713 ha of sea and 180 ha of coastline, affecting the habitats and biodiversity of the Reserva Nacional Sistema de Islas, Islotes y Puntas Guaneras and the Zona Reservada Ancón. Nearly 500 species of marine algae, invertebrates, birds, and mammals have been affected. The Academy and public agencies should establish lines of research that include the management and conservation of species, to be carried out on the coasts of the Peruvian marine coast, in charge of specialized professionals, as well as provide the logistics and economic resources for the recovery and maintenance of marine biodiversity.
Trend in didactis and skills development for forensic science students
Authors: Nuñez Rodríguez Jose Antonio
Published: March 2022

El presente trabajo tuvo como propósito explorar las tendencias de la didáctica y desarrollo de competencias para estudiantes de ciencias forenses, a través de una revisión documental. Se encontraron 65 documentos, tras el análisis del contenido se exponen orientaciones y posicionamientos respecto a la didáctica de las ciencias forenses, destacándose aquellas estrategias enfocadas en los estudiantes porque potencian las competencias de estos futuros profesionales, denominadas metodologías activas. En relación con las competencias, se identificaron 10 competencias que buscan la formación integral del ser desde un enfoque socioformativo, dentro de estas se mencionan el compromiso ético, pensamiento crítico y reflexivo, comunicación, alfabetización científica, uso de tecnologías, equipos y reactivos, profundizando en aquellas competencias destinadas a la coordinación de recursos institucionales para llevar a cabo una investigación criminal, entre otras. Por último, la formación de estos profesionales requiere de la integración de diversos actores (académicos e instituciones del Estado en materia penal) como parte del proceso de formación de los futuros profesionales en el área de las ciencias forenses como apoyo al sistema de justicia en su administración.