In this study, it was investigated chitosan (CHIT) films in the presence or absence of cellulose nanofibers (CNF) and silver nanoparticles (AgNP), whose chemical interactions involving metallic surfaces were characterized by surface-enhanced Raman scattering (SERS) spectroscopy. Changes in the morphology were analyzed through atomic force microscopy (AFM) and scanning electron microscopy (SEM). SEM and AFM micrographs revealed that the incorporation of CNF significantly altered CHIT films, leading to changes in the polymer topography and surface texture due to intimal interactions between CNF and the CHIT matrix. Raman spectra of CHIT and CNF/CHIT films showed similar profiles, reflecting comparable molecular structures of both modified biopolymers. However, SERS spectra of both films, after recovering with AgNP, demonstrated distinct spectral profiles. Innovatively, density functional theory (DFT) calculations of an oligomer model for CHIT were employed to assign the vibrational modes observed in the SERS spectra, which allowed identify key interactions between CHIT moieties and AgNP surfaces. SERS results revealed that chemical adsorption of CHIT on AgNP surfaces occurs through interactions of glycosidic oxygen and amino groups. Such findings provide insights into the structural and chemical behavior of this nanocomposite, highlighting its potential for advanced biological applications. study (CHIT (CNF , (AgNP) surfaceenhanced enhanced (SERS spectroscopy (AFM SEM. . (SEM) matrix CNFCHIT profiles biopolymers However Innovatively DFT (DFT groups nanocomposite applications (AgNP (SEM

Abstract Introduction. Livestock farming with Creole cattle is practiced in rural areas with challenging characteristics for species management. Objective. To describe the production system and the socio-cultural and technical-economic factors affecting the production of Nunkiní Creole cattle (Bos taurus). Materials and methods. The study was conducted from November 2020 to October 2021 in nine livestock production units of Nunkiní, Calkiní municipality, Campeche, Mexico. Information was obtained from an interview form with social, cultural, technical, and economic study variables, applied to selected producers. Data were analyzed using descriptive statistics and ANOVA. Results. Livestock farming was carried out by men (100 %), with an average age of 58.44 years. The average years of experience were 34.61. Younger producers had higher levels of education and less experience, and were responsible for the production units of higher technological levels. The size of the livestock production unit ranged from five to twenty-two cattle (average of 14). Feeding management followed a transhumance scheme, with cattle being free-ranging on ejido lands and from May to December and semi-stabled from January to April, grazing on cultivated pastures and supplemented with agricultural residues. With the zootechnical management implemented by the producers, an average pregnancy rate of 83 % was achieved. The main product marketed was fresh meat in cuts and direct sale to consumers, with an average price of 2.675 USD$/kg. Conclusion. It is traditional extensive system that takes advantage of the common use of grasslands. It involves experienced but older producers, with small investments, and serves to strengthen their family economy. This activity is threatened by the lack of revaluation of Creole cattle and the introduction of exotic breeds in the area to maximize production.

Resumen Introducción. La ganadería con bovinos criollos se práctica en espacios rurales con características difíciles para el manejo de las especies. Objetivo. Describir el sistema productivo y los factores socioculturales y técnico-económicos que afectan la producción del bovino criollo de Nunkiní (Bos taurus). Materiales y métodos. El estudio se realizó entre noviembre del 2020 a octubre del 2021, en nueve unidades de producción pecuarias de Nunkiní en el municipio de Calkiní, Campeche, México. La información se obtuvo de una cédula de entrevista con variables de estudio sociales, culturales, técnicas y económicas, aplicada a productores seleccionados. Los datos se analizaron mediante estadística descriptiva y ANDEVA. Resultados. La crianza del ganado la realizaron hombres (100 %), con edad promedio de 58,44 años. Los años de experiencia promedio fueron de 34, 61. Los productores jóvenes tuvieron mayor escolaridad y menor experiencia, y se encargaron de las unidades de producción de mayor nivel tecnológico. El tamaño de la unidad de producción pecuaria varió de cinco a veintidós bovinos (media de 14). El manejo alimenticio tuvo un esquema de trashumancia, donde de mayo a diciembre estuvieron libres en tierras ejidales y de enero a abril se manejaron semiestabulados, con pastoreo en potreros cultivados y suplementados con residuos agrícolas. Con el manejo zootécnico implementado por los productores, se obtuvo un promedio de 83 % de preñez. El producto principal comercializado fue carne fresca en cortes y venta directa al consumidor, con un precio promedio de 2,675 USD$/kg. Conclusión. Es un sistema tradicional extensivo que aprovecha el uso común de los agostaderos. Con productores de experiencia, pero de edad avanzada, de pequeña inversión y le sirve para fortalecer su economía familiar. Dicha actividad se ve amenazada por la falta de revalorización del bovino criollo y la introducción de razas exóticas en la zona para maximizar la producción.

ABSTRACT Due to the reduction of Chondracanthus chamissoi natural beds in Peru, different alternatives have been proposed for its cultivation, generally opting for suspended (CS) and bottom (CF) cultivation systems. When thalli reach commercial size, they get harvested for sale, and it is unknown if their specific growth rate (TCE) and/or regenerative capacity decrease. Therefore, the present work aimed to determine the TCE in the post-harvest regenerative capacity and the life cycle phase dominance of C. chamissoi in two pruning events comparing CS and CF during august 2019 and february 2020 in the south-central coast of Peru. The TCE was higher in CS (1.67 % day-1) in comparison to CF (1.47 % day-1). Likewise, CS showed better results in biomass (631.6 ± 81.3 gm-1) and length (23.91 ± 5.8 cm) compared to CF (256.5 ± 33.6 gm-1 and 21.10 ± 7.50 cm) during the first harvest. After the second harvest, lower values in biomass (CS: 160.2 ± 180 gm-1, CF: 59.4 ± 110 gm-1) and length (CS: 16.23 ± 3.68 cm, CF: 15.73 ± 4.25 cm) were observed. The dominant phase was the vegetative one, followed by the carposporic and tetrasporic phases. In conclusion, suspended cultivation showed better results; it is recommended to leave an average of 4-5 cm during pruning, to allow a better growth for a new harvest in less than 3 months.

RESUMEN Ante la reducción de praderas naturales de Chondracanthus chamissoi en Perú se han planteado diferentes alternativas para su cultivo, principalmente optando por sistemas de cultivo suspendido (CS) y cultivo de fondo (CF). Al alcanzar la talla comercial, los talos sufren podas para su comercialización, desconociéndose si disminuyen su tasa de crecimiento especifica (TCE) y/o capacidad regenerativa. Por ello, el presente trabajo tuvo como objetivo determinar la TCE en la capacidad regenerativa post-cosecha y la dominancia de fases del ciclo de vida de C. chamissoi en dos eventos de poda comparando CS y CF entre agosto de 2019 y febrero de 2020 en la costa centro-sur del Perú. La TCE fue mayor en CS (1.67 % día-1) respecto de CF (1.47 % día-1). Asimismo, CS mostró mejores resultados en biomasa (631.6 ± 81.3 gm-1) y longitud (23.91 ± 5.8 cm) en comparación a CF (256.5 ± 33.6 gm-1 y 21.10 ± 7.50 cm) tras la primera poda. Luego de la segunda poda, se observaron valores reducidos en biomasa (CS: 160.2 ± 180 gm-1, CF: 59.4 ± 110 gm-1) y longitud (CS: 16.23 ± 3.68 cm, CF: 15.73 ± 4.25 cm). Se determino a la fase vegetativa como dominante, seguida de talos carpospóricos y finalmente los tetraspóricos. Se concluye que CS muestra mejores TCE luego de eventos poda y se recomienda dejar en promedio 4-5 cm de talo para facilitar una rápida regeneración.

ABSTRACT. Part of the legal literature and jurisprudence have indicated that the Vienna Convention on the International Sale of Goods contains a general right of retention based on the interpretation of several provisions of the Convention, including Article 58 and Article 71. This work analyzes these articles to determine if they are cases of the right of retention, or rather they establish cases of exceptio non adimpleti contractus in its various modalities.

RESUMEN. Parte de la doctrina y la jurisprudencia han señalado que la Convención de Viena sobre compraventa internacional de mercaderías contempla un derecho de retención general a partir de la interpretación de varios artículos de la Convención, entre ellos, el artículo 58 y el artículo 71. El presente trabajo analiza estos artículos para determinar si realmente se trata de supuestos de derecho de retención o si, más bien, establecen supuestos de excepción de contrato no cumplido en sus diversas modalidades.

ABSTRACT: The aim of this article is to present different legal strategies for the financial sustainability of Colombian biobanks. For that purpose, this work criticizes the sale of human biological samples as a means for sustainability, and proposes different legal alternatives based on, among others, the compensation for the costs associated with the maintenance of the biobank, services of sample collection for third parties or political commitment on the part of the State.

RESUMEN. El objetivo de este artículo es presentar posibles estrategias jurídicas para la sostenibilidad financiera de los biobancos en Colombia. Para tal propósito, critica la posibilidad de comercializar muestras biológicas humanas mediante contratos onerosos y estudia algunas alternativas de sostenimiento basadas, por ejemplo, en la compensación económica por los costos asociados al mantenimiento, el servicio de colección de muestras a terceros o el compromiso político por parte del Estado.

Abstract Background: Lobelia villaregalis is an endemic and endangered species in Jalisco, Mexico. Knowing the structure and genetic diversity of populations of species at risk can contribute to improving strategies for their conservation. This information has not been generated for L. villaregalis. Questions: 1) Does L. villaregalis present low levels of genetic diversity?, 2) Are there genetic differences between its populations?. Studied species: Lobelia villaregalis T.J. Ayers (Campanulaceae: Lobelioideae), herbaceous perennial. Study site and dates: During 2018-2020, field work was carried out in El Bosque La Primavera Natural Protected Area, in Zapopan, Jalisco, in order to locate new populations of the species and collect leaf material. Methods: The diversity and genetic structure of 87 individuals in five populations were evaluated using ISSR molecular markers. Results: The average genetic diversity of L. villaregalis is low (He = 0.057, P = 48.17 %, I = 0.110) as well as the total diversity (HT = 0.069). Molecular analysis of variance showed that most of the genetic variation (92 %) occurred within populations. The Mantel test indicates that there is no correlation between the genetic distances and the geographical distances for the five populations of the species (R = 0.64, P = 0.18). With the genetic assignment analysis, 4 groups were identified, however there is no genetic structure (GST = 0.060). Conclusions: Lobelia villaregalis requires urgent actions of conservation to maintain the genetic diversity present in all its populations, giving the highest priority to three of them.

Resumen Antecedentes: Lobelia villaregalis es una especie endémica y en peligro de extinción en Jalisco, México. Conocer la estructura y diversidad genética de las poblaciones de especies en riesgo puede contribuir a mejorar las estrategias para su conservación. Esta información no se ha generado para L. villaregalis. Preguntas: 1) ¿Presenta L. villaregalis niveles bajos de diversidad genética?, 2) ¿Existen diferencias genéticas entre sus poblaciones? Especies de estudio: Lobelia villaregalis T.J. Ayers (Campanulaceae: Lobelioideae), herbácea perenne. Sitio y años de estudio: Durante 2018-2020 se realizó trabajo de campo en el Área Natural Protegida Bosque La Primavera, Zapopan, Jalisco, para localizar nuevas poblaciones de la especie y recolectar material foliar. Métodos: Se evaluó la diversidad y estructura genética de 87 individuos en cinco poblaciones utilizando marcadores moleculares ISSR. Resultados: La diversidad genética promedio de L. villaregalis es baja (He = 0.057, P = 48.17 %, I = 0.110) así como la diversidad total (HT = 0.069). El análisis de varianza molecular mostró que la mayor parte de la variación genética (92 %) ocurrió dentro de las poblaciones. La prueba de Mantel indica que no hay correlación entre las distancias genéticas y las distancias geográficas para las cinco poblaciones estudiadas (R = 0.64, P = 0.18). Con el análisis de asignación genética se identificaron 4 grupos, sin embargo, no existe estructura genética (GST = 0.060). Conclusiones: Lobelia villaregalis requiere acciones urgentes de conservación para mantener la diversidad genética de todas sus poblaciones, dando máxima prioridad a tres de ellas.

Resumo: O presente estudo investigou os efeitos da visualização de imagens de times favoritos e rivais nos indicadores de valência e ativação emocional, averiguando possíveis interações com os níveis de fanatismo em torcedores de futebol. Participaram deste experimento 27 voluntários (M= 22 anos; DP= 3,25), que avaliaram a agradabilidade (valência hedônica) e a excitação emocional (ativação) desencadeada por um conjunto de imagens neutras, positivas e negativas do Sistema Internacional de Figuras Afetivas (IAPS), acrescido de 30 imagens experimentais pareadas, sendo 15 do time favorito e 15 do time rival. As avaliações foram realizadas através da escala Self Assessment Manikin (SAM) e da Escala de Fanatismo em Torcedores de Futebol (EFTF). Análises comparativas demonstraram que o nível de fanatismo não influenciou na atribuição da valência hedônica às imagens. Contudo, o grupo com níveis mais altos de fanatismo apresentou maior excitação emocional em resposta a imagens neutras (p< 0,01; d= 0,914), do time favorito (p< 0,01; d= 1,49) e do time rival (p< 0,01; d= 0,83). A análise de dispersão sugeriu o envolvimento dos sistemas motivacionais apetitivo e aversivo em reação às imagens do time favorito e rival, respectivamente. Os resultados do estudo auxiliam na compreensão do fenômeno do fanatismo no futebol.

Resumen: El presente estudio investigó los efectos de la visualización de imágenes de equipos favoritos y rivales en los indicadores de valencia y activación emocional para averiguar la interacción con los niveles de fanatismo de los hinchas de fútbol. Veintisiete voluntarios (M= 22 años; DE= 3.25) participaron en este experimento, quienes evaluaron la agradabilidad (valencia hedónica) y la excitación emocional (activación) desencadenada por un conjunto de imágenes neutrales, positivas y negativas del International System of Affective Pictures (IAPS), con más de 30 imágenes experimentales del equipo favorito y el rival. Las evaluaciones se realizaron utilizando la escala Self Assessment Manikin (SAM) y la Escala de Fanatismo en Hinchas de Fútbol (EFHF). Análisis comparativos demostraron que el nivel de fanatismo no influyó en la atribución de la valencia hedónica de las imágenes. Sin embargo, las personas con niveles más altos de fanatismo presentaron una excitación superior ante imágenes neutras (p< .01; d = 0.914), imágenes del equipo favorito (p< .01; d= 1.49) e imágenes del equipo rival (p< .01; d= 0.83). El análisis de dispersión sugirió la implicación de los sistemas motivacionales apetitivos y aversivos en respuesta a las imágenes del equipo favorito y rival, respectivamente. Los resultados del estudio ayudan a comprender el fanatismo en el fútbol.

Abstract: The present study investigated the effects of the favorite and rival team visualization on valence and emotional arousal indicators, verifying for possible interactions with the fanaticism level in soccer fans. Twenty-seven volunteers (Mage = 22; SD= 3.25) participated in this experiment, who evaluated the pleasantness (hedonic valence) and the emotional arousal (activation) triggered by a set of neutral, positive and negative images of the International System of Affective Pictures (IAPS) plus 30 experimental images of the favorite and rival team. Evaluations were performed using the Self Assessment Manikin (SAM) scale and the Football Supporter Fanatism Scale (FSFS). Comparative analysis revealed that fanaticism did not influence the assignment of hedonic valence to the images. However, individuals with higher levels of fanaticism exhibited greater arousal in response to neutral (p< .01; d= 0.914), favorite (p< .01; d= 1.49), and rival images (p< .01; d= 0.83). The dispersion analysis suggested the involvement of appetitive and aversive motivational systems in response to images of the favorite and rival teams, respectively. The study findings lead to a better understanding of the fanaticism in soccer.

Abstract: This article analyzes the sale of the National Medical Center (CMN) by the Medical and Healthcare Secretariat (SSA) to the Mexican Social Security Institute (IMSS) as part of a broader fragmentation process in healthcare and hospital services that began in the forties, when access to healthcare was divided between workers in the formal economy, who were covered by IMSS, and the healthcare offered by SSA to those without access to it. Analyzing documents from both institutions, it can be seen that the sale of the CMN was a product of the major inequalities between an IMSS that was in its golden age and an underfunded and oversaturated SSA. This article argues that these inequalities only deepened with the sale of the CMN from one institution to another.

Resumen: Este artículo analiza la venta del Centro Médico Nacional (CMN) por parte de la Secretaría de Salubridad y Asistencia (SSA) al Instituto Mexicano del Seguro Social (IMSS) en 1961 como parte de un proceso más amplio de fragmentación de la atención médica y hospitalaria que comenzó desde la década de los cuarenta, cuando se dividió el acceso a la asistencia médica entre la seguridad social para trabajadores del sector formal, encabezada por el IMSS, y la asistencia social ofrecida por la SSA para la población sin acceso a ella. Analizando documentos de ambas instituciones, se muestra que la venta del CMN fue producto de las grandes desigualdades que para entonces regían entre un IMSS que pasaba por una época de oro, y una SSA subfinanciada y saturada. Asimismo, se argumenta que estas desigualdades no hicieron más que profundizarse con el traspaso del CMN de una institución a otra.

Abstract: This article has the objective of explaining the origin and circulation of certain stamps and paintings with the likeness of King Fernando VII. Through a comparative analysis of examples of illustrations, engravings and paintings that circulated between Spain and New Spain during the first two years of the crisis of the Spanish monarchy, as well as of a series of contemporary testimonies, it will demonstrate the presence of a pictorial imaginary, its propagandistic use and the contrasting ideas that these images, in accordance with the loyalist discourse of the time, could provoke in public opinion.

Resumen: El presente trabajo tiene como propósito exponer el origen y circulación de algunas estampas y pinturas con la efigie del rey Fernando VII. Partiendo del análisis comparativo de ejemplares de efigies, grabados y pinturas que circularon entre España y la Nueva España durante los dos primeros años de la crisis monárquica española, así como una serie de testimonios de la época, se probará la presencia del imaginario pictórico fernandino, su uso propagandístico y las contrastantes ideas que dichas imágenes, en consonancia con el discurso fidelista de la época, pudieron generar entre la opinión pública.

Hierdie sewe-jaar longitudinale opvoedingstudie evalueer drie akademiese afleweringsmodusse vir deeltydse MBA-studente in hul Bemarkingsbestuursmodule, naamlik vol kontak (20172019), vol aanlyn tydens COVID-19 se harde inperking (2020-2021 en die daaropvolgende gemengde modus (2022-2023). Die studie het ten doel om te bepaal of die afleweringsmodus studente se akademiese prestasie beduidend beïnvloed. Die eenrigting-variansie-analise (EVA) het beduidende verskille tussen die afleweringsmodusse vir individuele opdragte (normatiewe assessering) en groepgevallestudies (summatiewe assessering) geïdentifiseer. Daar was ook betekenisvolle verskille tussen die akademiese prestasie ten opsigte van die finale saamgestelde portefeulje van kennis (wat as eksamen dien). Hierdie portefeulje bestaan uit 'n prakties-toegepaste bemarkingsplan. Die post-hoc toetse het getoon dat studente aansienlik beter gevaar het tydens die gemengde afleweringsmodus in individuele opdragte, terwyl die volledige aanlyn modus laer punte vir die groepgevallestudies gehad het. Beide die gemengde en volledige kontakmodusse het beduidende opeenvolgende verbetering vir die groepgevallestudies getoon, wat in elke gevallestudie verbetering getoon het namate die semester gevorder het. Dit verskil van volledige aanlyn onderrig. Die gemengde modus het ook aansienlik beter gevaar in die eksamen- en finale modulepunte en het selfs beter gevaar as volkontakklasse.

The COVID-19 pandemic significantly transformed the tertiary education landscape. Traditional contact universities were forced abruptly to adopt a full-distance education mode, a situation neither the students nor lecturers were prepared for. Many lectures and teaching activities were developed on the fly as universities struggled to roll out the needed support in double-time for lecturers and students. This new normal for education required integrating technology, advanced communication software, revised assessment techniques, and recognising the need for flexible and adaptable approaches to teaching and learning. Students also evolved and gained technological proficiency, adaptability, time management, soft skills, social media proficiency, and an awareness of health and well-being. Albeit uncertain in redefining the new normal, universities continue to provide quality education. However, exactly how university education should be delivered to a new breed of students in a new business environment is a challenge. This is even more so in the case of executive MBA students. After the hard lockdown and restrictions were lifted on 21 September 2020, the North-West University Business School started to explore other modes of academic content delivery. Reinstating a full contact delivery mode was not an option because of remaining restrictions. High technological investment, online-educated lecturers and students, and benefits and developments during online learning now form a new normal for the Business School. Which teaching method, or rather, which mode of delivery, is the most relevant and adequate? Should the MBA lectures return to the historic full-contact delivery mode, stick with the newly established full online mode, or attempt to integrate the benefits of both into a hybrid mode of delivering business education to a new breed of technology-savvy students? This study, therefore, examines the academic performance of the different delivery modes by comparing data of Executive MBA Marketing management students at the NWU Business School in South Africa. The study examines the academic performance of these students from 2017 up to 2023. The panel database consists of Executive MBA students'marks for the module in Marketing Management from 2017 up to 2023. The database contains marks for individual assignments, groupwork case studies, final individual- and groupwork marks, exam marks and the final module mark. The final assessment is a portfolio of evidence comprising a detailed marketing plan for a product, service, or organisation of choice. The mode of delivery served as the dependent variable, while the independent variables comprised the marks for each assignment (groupwork, individual and portfolio of evidence). Three delivery modes were compared, namely full-contact (2017-2019), full-online (2020-2021), and the post-pandemic hybrid mode currently in effect (2022-2023). The data comprised 630 cases. However, the analysis of variance (ANOVA) used 532 cases to compare the different groupwork assignments (230 full-contact students, 159 full-online students, and 143 hybrid students). Cronbach's alpha coefficient measured the data's reliability, and one-way ANOVA determined significant differences (p<.05) between the academic performance of the three delivery modes. The analysis confirmed that significant differences exist between the modes of delivery for individual assignments, group case studies and exams (p<.05). The Tukey ab post-hoc tests showed that students performed significantly better during the hybrid delivery mode in individual assignments (69.2%) than full contact (63.8%). Regarding the individual assignment, the full online (63.8%) and full contact (63.7%) delivery modes perform significantly worse than the hybrid (69.2%) delivery mode. Regarding the first group case study (Group Assignment 1), full online performs (67.3%) significantly worse than hybrid (71.1%) and full contact (73.6%) delivery modes. There is no significant difference between the hybrid and full contact delivery modes. In the second, third, and fourth group case studies (Group Assignments 2, 3 & 4), the hybrid delivery mode (82.37%, 75.4%, 82.7%) outperforms the full contact (75.4, 80.1%, 86.6%) and full-online (71.4%, 71.4%, 67.8%) modes. The hybrid delivery mode, therefore, proves to be more conducive towards academic performance in group work. Finally, in considering the final module mark, the hybrid delivery mode (71.0%) is significantly higher than the other two delivery modes. However, there is no significant difference between full online (67.5%) and full-contact (67.2%) delivery modes regarding the final module mark. Nevertheless, it is noteworthy that the better performance in the final module marks is a function of the groupwork where the students analysed case studies together. There are no significant differences in the exam marks between the delivery modes, so better academic performance in the hybrid mode of delivery where groupwork is concerned culminates in the better module mark. Based on the findings, it is evident that the hybrid mode of delivery results in the best academic performance. This observation is based on three reasons, namely 1) students performed better in both the normative and summative assessments during hybrid tuition; 2) there is continuous progressive learning throughout the semester regarding the group case studies (summative assessment). They learn to improve and hone their skills to analyse better and apply business solutions to real-life problems experienced by organisations. This is based on students' improving marks in the group case studies as they become more proficient in analysing and answering the applied case studies because they learn from each case study; and 3) the students perform better academically in their normative assessments and earn higher final module marks (partially due to reason 2). It is concluded that the hybrid delivery mode facilitates the academic performance of post-pandemic executive MBA Marketing management students. JEL KODES: I23, I21, M30

Abstract The essay aims to discuss the functions of technological knowledge in social management, and the premises that justify its performance as a solution to social problems linked, specifically, to poverty. In the social field, technological knowledge has gained a recognized place of performance with respect to its technical potential for the development of solutions in the field of social assistance policy; Based on the supposed neutrality they carry, the instrumental and symbolic functions they perform constitute the bases of their legitimation as expert knowledge capable of offering “optimal” solutions. This impulse is related to local conditions of possibility, but also to the role of international organizations in the development of public policy; his statements regarding the premises that States should follow to address social problems, and the strategies to make their reform programs work. The reflection from the Uruguayan case on the trajectory of technological knowledge in the social field in the first decades of the 21st century, allows us to identify the devices and mechanisms with technological supports that define modalities and criteria for the assignment of social services, which have in turn, modeling effects on professional practices historically linked to care and the execution of social policies.

Resumen El ensayo se propone discutir las funciones de los saberes de la tecnología1 en la gestión de lo social, y las premisas que justifican su desempeño en tanto solución a los problemas sociales vinculados, específicamente, a la pobreza. En el campo social, los saberes de la tecnología han ganado un reconocido lugar de desempeño respecto a sus potencialidades técnicas para la elaboración de soluciones en el ámbito de la política socioasistencial2; a partir de la supuesta neutralidad que portan, las funciones instrumentales y simbólicas que desempeñan, constituyen las bases de su legitimación como saberes expertos capaces de ofrecer soluciones “óptimas”. Este impulso se relaciona con condiciones de posibilidades locales, pero también con el papel de los organismos internacionales en la elaboración de política pública, sus señalamien tos respecto a las premisas que los Estados deberían seguir para abordar los problemas sociales, y las estrategias para hacer funcionar sus programas de reformas. La reflexión desde el caso uruguayo sobre la trayectoria de los saberes de la tecnología en el campo social en las primeras dos décadas del siglo XXI, permite identificar los dispositivos y mecanismos con soportes tecnológicos que definen modalidades y criterios para la asignación de servicios sociales, que tienen a su vez, efectos de modelación sobre las prácticas profesionales ligadas históricamente al cuidado y la ejecución de políticas sociales.

Resumen Los efectos del estrés laboral están asociados con las horas de trabajo y las actividades mentales, como pensar y tomar decisiones, necesarias para la preparación y cualificación de tareas. El objetivo del estudio fue analizar la carga mental percibida en dos instituciones educativas con similitudes socioeconómicas, geográfica y planes educativos similares de la ciudad de Ibagué en el departamento del Tolima, Colombia. Se optó por una metodología cuantitativa no experimental de tipo transversal descriptivo, utilizando el NASA TLX para medir la carga mental, sometiendo los datos a un análisis estadístico no paramétrico de varianzas ANOVA de Kruskal-Wallis y la prueba DSCF para comparaciones post hoc. Los resultados revelaron que las diferencias en la carga de trabajo percibida están más relacionadas con el contexto institucional que con factores individuales como la edad, el género o la asignación académica que imparten los docentes. Esto sugiere que las características internas de las instituciones educativas y las habilidades de afrontamiento utilizadas por los docentes son cruciales para comprender y gestionar adecuadamente la carga mental percibida. Estos hallazgos enmarcan la importancia de adaptar las estrategias de gestión de la carga mental a las particularidades de cada institución educativa para mejorar la calidad de vida laboral de los profesionales y, en última instancia, la calidad de la educación que ofrecen.

Abstract The effects of work stress are associated with work hours and mental activities, such as thinking and decision making, necessary for the preparation and qualification of tasks. The objective of the study was to analyze the perceived mental load in two educational institutions with socioeconomic and geographic similarities and similar educational plans in the city of Ibagué in the department of Tolima, Colombia. A descriptive cross-sectional non-experimental quantitative methodology was chosen, using the NASA TLX to measure mental load, subjecting the data to a non-parametric statistical analysis of variances ANOVA by Kruskal-Wallis and the DSCF test for post hoc comparisons. The results revealed that differences in perceived workload are more related to the institutional context than to individual factors such as age, gender, or the academic assignment taught by teachers. This suggests that the internal characteristics of educational institutions and the coping skills used by teachers are crucial to adequately understand and manage perceived mental load. These findings frame the importance of adapting mental load management strategies to the particularities of each educational institution to improve the quality of work life of professionals and, ultimately, the quality of the education they offer.

Abstract Housing leaves a sample of different contexts in which the city is lived; its size, shape and location, according to its typology, are the initial referents of the costs in the market and therefore of those who acquire them. The main objective of this work is to expose a cartography of housing in the city. Where the urban form configured from the new house for sale and the social inequality that is marked through its acquisition is shown, taking into account only its economic dimension, which is affected according to its dimensions, location and the means to its financing. For this, 28 subdivisions that where identified had new homes for sale are analyzed, between May 2020 and April 2021, in Pachuca, Hidalgo, Mexico. This shows cuts in the city, which occur between spatial fractures and social disparity, which are evident from the type of housing and its costs in the real estate market.

Resumen La vivienda deja muestra de contextos diferenciados en los que se vive la ciudad; su tamaño, forma y ubicación, según su tipología, son los referentes iniciales de los costos en el mercado y, por ende, del poder económico de quienes las adquieren. Este trabajo tiene como objetivo principal dejar a la vista una cartografía de la vivienda en la ciudad, donde se muestre la forma urbana configurada a partir de la vivienda nueva a la venta y la desigualdad social que se marca a través de su adquisición. Se considera únicamente su dimensión económica, viéndose afectada según sus dimensiones, ubicación y los medios para su financiamiento. Para ello, fueron analizados 28 fraccionamientos identificados por contar con vivienda nueva a la venta, entre mayo del 2020 y abril del 2021, en Pachuca, Hidalgo, México. Lo anterior deja muestra de recortes en la ciudad, dados entre las fracturas espaciales y la disparidad social, y evidenciados a partir de la tipología de la vivienda y sus costos en el mercado inmobiliario.

RESUMO A pandemia de covid-19 trouxe inúmeras mudanças aos territórios sustentáveis e saudáveis, implicando a necessidade de reorganização de estruturas sociais e de saúde. Objetivou-se compreender a dinâmica das feiras livres de vendas de alimentos no período pós-pandêmico de covid-19 em cidades do Maciço de Baturité, no Ceará, e avaliar as estratégias sanitárias e/ou de biossegurança utilizadas no enfrentamento da covid-19 por feirantes e consumidores. Realizou-se um estudo qualitativo entre outubro de 2021 e janeiro de 2023, em cinco cidades do Ceará. Em uma primeira etapa, foi realizada a observação das condições sanitárias e de biossegurança nas feiras livres, mediante um instrumento estruturado em quatro categorias. Em seguida, consumidores e feirantes foram entrevistados para o aprofundamento de discussões sobre os reflexos da pandemia sobre as feiras. Avaliaram-se as feiras de cinco cidades e entrevistaram-se 44 pessoas. Quatro cidades mostraram-se com condições sanitárias precárias e comprometimento da biossegurança e comercialização de alimentos. Feirantes e consumidores tiveram uma baixa percepção de risco sobre a covid-19 e levantaram a necessidade da perpetuação das feiras livres para a qualidade de vida e economia da região. As feiras livres são territórios sociais e econômicos sustentáveis, que ainda carecem de atenção por gestores e profissionais de saúde. covid19 covid 19 covid-1 saudáveis saúde Objetivouse Objetivou se póspandêmico pós pandêmico Baturité Ceará eou ou Realizouse Realizou 202 2023 etapa categorias seguida Avaliaramse Avaliaram entrevistaramse entrevistaram 4 pessoas mostraramse mostraram região covid1 1 covid- 20 2

ABSTRACT The COVID-19 pandemic has brought countless changes to sustainable and healthy territories, implying the need to reorganize social and health structures. The aim was to understand the dynamics of open-air food sales markets in the post-COVID-19 pandemic period in cities in the Maciço de Baturité, in Ceará, Brazil, and to evaluate the health and/or biosafety strategies used by marketers and consumers to deal with covid-19. A qualitative study was carried out between October 2021 and January 2023, in five cities in the state of Ceará. In the first stage, the sanitary and biosafety conditions at the street markets were observed using an instrument structured into four categories. Then, consumers and stallholders were interviewed to deepen discussions about the impact of the pandemic on the markets. We evaluated fairs in five cities and interviewed 44 people. Four cities were found to have precarious sanitary conditions and compromised biosafety in the sale of food. Marketers and consumers had a low-risk perception regarding COVID-19 and raised the need to perpetuate open-air markets for the region’s quality of life and economy. Free markets are sustainable social and economic territories, which still require attention from managers and health professionals. COVID19 COVID 19 COVID-1 territories structures openair open air postCOVID19 postCOVID post post-COVID-1 Baturité Ceará Brazil andor or covid19. covid19 covid 19. covid-19 202 2023 stage categories Then 4 people lowrisk low risk regions region s economy professionals COVID1 1 COVID- postCOVID1 post-COVID- covid1 covid-1 20 post-COVID covid- 2

RESUMO Este estudo analisa a presença online de marcas globais de moda à luz do novo luxo. Identificando resistências tradicionais à integração digital, destaca-se que seis das nove marcas pesquisadas adotam estratégias condizentes com o novo luxo, enfatizando interação, diálogo e venda de produtos premium no mercado brasileiro. Observa-se um compromisso crescente com a sustentabilidade, especialmente nas marcas Louis Vuitton e Dior, que incorporam ações ambientais e sociais em suas plataformas online. A análise de redes sociais (ARS) revela a interconexão entre os conceitos de luxo e sustentabilidade. Limitações incluem a amostragem restrita a marcas de moda e a falta de pesquisa sobre a exclusividade nas plataformas digitais. O estudo destaca a importância da compreensão aprofundada do engajamento das marcas de luxo na internet para orientar estratégias de marketing digital na pós-modernidade. destacase se interação brasileiro Observase Observa sustentabilidade Dior ARS (ARS digitais pósmodernidade. pósmodernidade pós modernidade. modernidade pós-modernidade

This study examines the online presence of global fashion brands in light of new luxury. Identifying traditional resistances to digital integration, it is noteworthy that six out of nine researched brands adopt strategies consistent with new luxury, emphasizing interaction, dialogue, and the sale of premium products in the Brazilian market. A growing commitment to sustainability is observed, particularly in brands like Louis Vuitton and Dior, which integrate environmental and social actions into their online platforms. Social Network Analysis reveals the interconnectedness between the concepts of luxury and sustainability. Limitations include a narrow sampling focusing on fashion brands and a lack of exploration into exclusivity on digital platforms. The study underscores the importance of a deep understanding of luxury brands’ engagement online to guide digital marketing strategies in the post-modern era. integration interaction dialogue market observed Dior platforms postmodern post modern era

Este estudio examina la presencia en línea de marcas globales de moda a la luz del nuevo lujo. Identificando resistencias tradicionales a la integración digital, es notable que seis de las nueve marcas investigadas adoptan estrategias consistentes con el nuevo lujo, enfatizando la interacción, el diálogo y la venta de productos premium en el mercado brasileño. Se observa un compromiso creciente con la sostenibilidad, especialmente en marcas como Louis Vuitton y Dior, que incorporan acciones ambientales y sociales en sus plataformas en línea. El Análisis de Redes Sociales (ARS) revela la interconexión entre los conceptos de lujo y sostenibilidad. Las limitaciones incluyen una muestra limitada centrada en marcas de moda y la falta de estudio sobre la exclusividad en las plataformas digitales. El estudio subraya la importancia de comprender a fondo el compromiso en línea de las marcas de lujo para orientar las estrategias de marketing digital en la era posmoderna. interacción brasileño sostenibilidad Dior ARS (ARS digitales posmoderna