Abstract The influence of occupant behaviour in buildings is widely discussed as one of the causes for the gap between energy use estimated via computer simulation and during building operation. Knowing the main drivers for adjustments in building systems is essential to guide the development of mathematical models for such behaviours. The aim of this study is to evaluate the main motivating agents for adjusting windows, luminaires, and air-conditioning in offices. Two offices were monitored using sensors that collected data from the internal environment and user interaction with such systems. Rainfall and external and internal air temperatures were considered influential for the interaction with window systems. The increase in internal and external temperatures had even more influence on interactions with air-conditioners. The main conclusions were: there is influence of the layout of the offices in the sharing and control of windows and efficiency of passive strategies, such as the use of natural and cross ventilation; and there is an influence of the increase in internal temperature compared to external temperature in the predictability of opening windows and turning air-conditioning devices on.

Resumo Ainfluência do comportamento dos usuários em edificações é amplamente discutida como uma das causas para discrepâncias entre consumos energéticos esperados, durante a fase de projeto, e consumos durante a operação. Conhecer os principais motivadores para ajustes nos sistemas de edificações é imprescindível para aprimorar a modelagem desses comportamentos. O objetivo deste estudo é avaliar os principais agentes motivadores para o ajuste das janelas, luminárias e aparelhos de ar-condicionado em escritórios. Dois escritórios foram monitorados por meio de sensores que coletaram dados de qualidade do ambiente interno e comportamento de usuário. Foram consideradas influentes para a interação com sistemas de janelas a pluviometria e as temperaturas do ar externo e interno. O aumento das temperaturas interna e externa apresentou ainda mais influência na interaçãocom aparelhos de ar-condicionado. Duas foram as principais conclusões: há influência do layout dos escritórios no compartilhamento e controle das janelas e eficiência de estratégias passivas, como o uso de ventilação natural e cruzada; e há influência do aumento da temperatura interna em comparação à externa na previsibilidade de abertura de janelas e acionamento de aparelhos de ar-condicionado.

Resumo A análise de dados genômicos, metagenômicos e proteômicos com curadoria é de suma importância nos campos da biologia, medicina, educação e bioinformática. Embora esse tipo de dados geralmente seja hospedado em formato bruto em repositórios internacionais gratuitos, o acesso total requer muita capacidade de computação e grande espaço em disco de armazenamento para o usuário doméstico. Os objetivos do estudo são oferecer um conjunto abrangente de bancos de dados de referência genômica e proteômica microbiana de forma acessível e fácil de usar para a comunidade científica e demonstrar suas vantagens e utilidade. Além disso, apresentamos um estudo de caso sobre a aplicabilidade dos dados esboçados para a determinação da coerência genômica geral entre dois membros da família Brucellacea, o que sugere que eles pertencem às mesmas genomoespécies que permanecem como ecótipos discretos. Um conjunto representativo de genomas, proteomas (de material tipo) e metagenomas foi coletado diretamente do banco de dados NCBI Assembly e do banco de dados de taxonomia do genoma (GTDB), associada aos principais grupos de bactérias, Archaea, vírus e fungos. Bancos de dados esboçados foram subsequentemente criados e armazenados em representações reduzidas práticas usando o algoritmo MinHash implementado no software Mash. O conjunto de dados obtido contém mais de 133 GB de espaço em disco reduzido para 883,25 MB e representa 125,110 registros genômicos/proteômicos de oito contextos informativos, que foram pré-filtrados para torná-los acessíveis, utilizáveis e amigáveis com recursos computacionais limitados. Os usos potenciais desses bancos de dados esboçados são discutidos, incluindo, mas não se limitando, a delimitação de espécies microbianas, estimativa de distâncias genômicas e novidades genômicas, comparações emparelhadas entre proteomas, genomas e metagenomas, exploração e seleção filogenética de vizinhos, entre outros.

Abstract The analysis of curated genomic, metagenomic and proteomic data is of paramount importance in the fields of biology, medicine, education, and bioinformatics. Although this type of data is usually hosted in raw format on free international repositories, the full access requires lots of computing power and large storage disk space for the domestic user. The purpose of the study is to offer a comprehensive set of microbial genomic and proteomic reference databases in an accessible and easy-to-use form to the scientific community and demonstrate its advantages and usefulness. Also, we present a case study on the applicability of the sketched data, for the determination of overall genomic coherence between two members of the Brucellacea family, which suggests they belong to the same genomospecies that remain as discrete ecotypes. A representative set of genomes, proteomes (from type material), and metagenomes were directly collected from the NCBI Assembly database and Genome Taxonomy Database (GTDB), associated with the major groups of Bacteria, Archaea, Virus, and Fungi. Sketched databases were subsequently created and stored on handy reduced representations by using the MinHash algorithm implemented in Mash software. The obtained dataset contains more than 133 GB of space disk reduced to 883.25 MB and represents 125,110 genomics/proteomic records from eight informative contexts, which have been prefiltered to make them accessible, usable, and user-friendly with limited computational resources. Potential uses of these sketched databases are discussed, including but not limited to microbial species delimitation, estimation of genomic distances and genomic novelties, paired comparisons between proteomes, genomes, and metagenomes; phylogenetic neighbor’s exploration and selection, among others.

Objetivo: investigar el efecto de una intervención a distancia sobre los síntomas de ansiedad y el consumo de alcohol en usuarios del servicio de Atención Primaria de Salud. Método: estudio cuasiexperimental, realizado con 1270 participantes que respondieron al Alcohol Use Disorders Identification Test y al State-Trait Anxiety Inventory 6. De estos, 1033 encuestados obtuvieron puntajes de síntomas de ansiedad moderada/grave (STAI-6 > 3) y consumo de alcohol de riesgo moderado/grave (AUDIT-C>3), y recibieron las intervenciones mediante llamada telefónica con un seguimiento de siete y 180 días. Para analizar los datos se utilizó un modelo de regresión de efectos mixtos. Resultados: el efecto de la intervención realizada fue positivo para reducir los síntomas de ansiedad entre T0 y T1 (µ=1,6 p<0,001) y para reducir el patrón de consumo de alcohol entre t1 y t3 (µ=1,57 p< 0,001). Conclusión: los resultados del seguimiento sugieren que la intervención tuvo un efecto positivo en la reducción de la ansiedad y el patrón de consumo de alcohol que tiende a mantenerse en el tiempo. Existe evidencia de que la intervención propuesta puede ser una alternativa para la atención preventiva en salud mental, en situaciones donde se comprometa la accesibilidad del usuario o del profesional.

Objective: to investigate the effect of a remote intervention on anxiety symptoms and alcohol use in users of the Primary Health Care service. Method: a quasi-experimental study conducted with 1,270 participants who answered the Alcohol Use Disorders Identification Test and the State-Trait Anxiety Inventory-6. Of these, 1,033 interviewees scored for moderate/severe anxiety symptoms (STAI-6 > 3) and moderate/severe risk alcohol use (AUDIT-C > 3), and received the interventions via telephone calls with follow-up periods lasting seven and 180 days. For data analysis, a mixed-effects regression model was used. Results: the effect of the intervention performed was positive in reducing anxiety symptoms between T0 and T1 (µ=1.6, p<0.001) and in reducing the alcohol use pattern between T1 and T3 (µ=1.57, p<0.001) Conclusion: the follow-up results suggest a positive effect of the intervention in reducing anxiety and the alcohol use pattern, which tends to be maintained over time. There is diverse evidence that the intervention proposed can be an alternative for preventive care in mental health, in situations where accessibility of the user or the professional is compromised.

Objetivo: investigar o efeito de uma intervenção remota nos sintomas de ansiedade e no uso de álcool em usuários do serviço de Atenção Primária à Saúde. Método: estudo quase experimental, realizado com 1270 participantes que responderam o Alcohol Use Disorders Identification Test e a State-Trait Anxiety Inventory 6. Desses, 1033 entrevistados pontuaram para sintomas de ansiedade moderada/severa (STAI-6>3) e uso de risco de álcool moderado/severo (AUDIT-C>3), e receberam as intervenções via chamada telefônica com follow-up de sete e 180 dias. Para análise dos dados utilizou-se um modelo de regressão de efeitos mistos. Resultados: o efeito da intervenção realizada foi positivo na redução dos sintomas de ansiedade entre T0 e T1 (µ=1,6 p<0.001) e na redução do padrão de uso de álcool entre t1 e t3 (µ=1,57 p<0.001). Conclusão: os resultados do follow-up sugerem efeito positivo da intervenção na redução da ansiedade e no padrão de uso de álcool, o qual tende a se manter ao longo do tempo. Há evidências de que a intervenção proposta pode ser uma alternativa para o cuidado preventivo em saúde mental, em situações nas quais a acessibilidade do usuário ou do profissional encontram-se comprometidas.

Resumen Los sistemas de mediciones de consumos se han vuelto omnipresentes y disruptivos en la industria de las noticias y en las rutinas de trabajo de sus periodistas. Ante un nuevo panorama de segmentación y especialización de contenidos, sumado a la aparición de una figura más activa del usuario participativo, los portales digitales demandan mayor versatilidad y formación tecnológica. A través de entrevistas en profundidad semiestructuradas con editores de audiencias de los principales portales digitales nacionales, el texto se propone distintos objetivos. En primer lugar, indagar sobre las modificaciones en las rutinas de trabajo periodísticas a partir del uso de métricas. En segundo lugar, dar cuenta de las estrategias de gestión promovidas por estos medios, y el rol de Google como gatekeeping de la información. Por último, el artículo propone una reflexión orientada a trascender los estudios de marketing y opinión pública para intentar dilucidar los modos en que la figura del editor de audiencias articula las tensiones entre contenidos, métricas y prácticas periodísticas. Los resultados muestran que las métricas impactan en los criterios de noticiabilidad, en los contenidos y en la sinergia de las redacciones, aunque se evidencian tensiones y resistencias entre los periodistas y los editores de audiencias. Además Google es un actor crucial que promueve distintas estrategias con en el fin de lograr un lugar privilegiado en los resultados de búsquedas.

Abstract Consumption measurement systems have become ubiquitous and disruptive in the news industry and in the work routines of its journalists. Faced with a new panorama of segmentation and content specialization, added to the appearance of a more active figure of the participative user, digital portals demand greater versatility and technological training. Based on this reality, this research focuses on the figure of audience editors, which are relatively new actors in the newsrooms of Argentine digital portals. We perform a qualitative análisis. Through semi-structured in-depth interviews with audience editors from the main national digital portals, the text sets out different objectives. With this objective, firstly we analyze the modifications in journalistic work routines based on the use of metrics and different measurement techniques that impact newsworthiness criteria and the decisions about the place of certain news in the media’s home page. Secondly, to account for the management strategies promoted by these media, the role of Google as information gatekeeping and the role of audiences. Finally, the article proposes a reflection aimed at transcending marketing and public opinion studies to try to elucidate the ways in which the figure of the audience editor articulates the tensions between content, metrics and journalistic practices.

Resumen: El propósito del presente estudio fue determinar los parámetros de calidad energética en el sistema de un usuario industrial conectado en media tensión, el cual registraba penalizaciones por parte de la distribuidora local por incumplir con parámetros mínimos de calidad. Se ejecutó una auditoría energética acorde a la regulación Nro. ARCERNNR 002/20; monitoreando el sistema con un analizador de redes FLUKE, evidenciándose flickers superiores a 1, distorsión armónica de hasta el 36% y factor de potencia promedio de 0,84 durante el 50% de los registros obtenidos. Se empleó el software ETAP para analizar los flujos de carga, registrándose variaciones de tensión de hasta el 26%. De acuerdo a los resultados obtenidos, se propuso mejoras como; redistribución de carga, compensación del factor de potencia, armónicos y aprovechamiento de energía solar, acciones comprobadas mediante DIALux y ETAP. Con el análisis y propuestas planteadas, se propone mejorar sustancialmente el desempeño energético del usuario.

Abstract: The purpose of this study was to determine the energy quality parameters in the system of an industrial user connected in medium voltage, which registered penalties from the local distributor for failing to comply with minimum quality parameters. An energy audit was carried out according to regulation No. ARCERNNR 002/20; monitoring the system with a FLUKE network analyzer, showing flickers greater than 1, harmonic distortion of up to 36% and average power factor of 0.84 during 50% of the records obtained. The ETAP software was used to analyze the load flows, registering voltage variations of up to 26%. According to the results obtained, improvements were proposed such as; load redistribution, power factor compensation, harmonics and use of solar energy, actions verified through DIALux and ETAP. With the analysis and proposals raised, it is proposed to substantially improve the energy performance of the user.

Resumen: En Guayaquil, como en muchas ciudades latinoamericanas, debido a su crecimiento territorial desbalanceado coexisten áreas muy dinámicas con otras fuertemente rezagadas. Desde el año 2021 la Municipalidad de Guayaquil incorpora en su planificación a las centralidades o núcleos multifuncionales, para optimizar su funcionamiento y desconcentrar al centro tradicional, las centralidades pueden ser de tipo urbana, zonal, barrial o sectorial. El presente estudio aborda a la centralidad zonal de La Alborada, con núcleos de interés y diversidad de comercio de proximidad coexistentes con un entorno residencial, condición que hace necesario caracterizar los usos del suelo a mediana y pequeña escala en su contexto comercial y residencial. La metodología adoptada recoge información catastral del geoportal municipal, para mapear, actualizar y clasificar las actividades comerciales, incluyendo la altura de edificaciones, tipos de vías y de manera general a través de recorridos de observación la percepción que tienen las personas de los espacios públicos de uso peatonal. Los principales resultados demuestran diversidad de actividades y servicios, y la consolidación del uso comercial en la periferia de las catorce etapas. Evidencia también a las edificaciones fuera de norma y la tendencia a especialidades de los usos comerciales, existiendo en algunas etapas más de diez locales próximos para una actividad especifica, como restaurantes y tratamientos estéticos. Concluyendo que, los espacios públicos colindantes con los locales comerciales son forzosamente utilizados como vestíbulos a cielo abierto, obligando al usuario a ocupar espacios previstos para la circulación peatonal, afectando la movilidad segura, confortable y eficiente de los residentes y usuarios.

Abstract: In Guayaquil, like many Latin American cities, very dynamic areas coexist with others that are strongly lagging because of their unbalanced territorial growth. Since 2021, the Municipality of Guayaquil has incorporated centralities or multifunctional centers into its planning to optimize its operation and decentralize the traditional center. The centralities can be urban, zonal, neighborhood, or sectoral. This study addresses the zonal centrality of La Alborada, with nuclei of interest and the diversity of local commerce coexisting with a residential environment, making it necessary to characterize the uses of the land on a medium and small scale in its commercial and residential context. The adopted methodology collects cadastral information from the municipal geoportal to map, update, and classify commercial activities, including the height of buildings, types of roads, and, in general, through observation tours, people's perception of public spaces for pedestrian use. The results show diverse activities and services and commercial use consolidation on the fourteen stages' periphery. They also show non-compliant buildings and the trend towards specialties in commercial uses, with over ten nearby businesses in some stages of a specific activity, such as restaurants and aesthetic treatments. Concluding that the public spaces adjoining the commercial premises are forcibly used as open-air lobbies, forcing the user to occupy spaces provided for pedestrian circulation, affecting the safe, comfortable, and efficient mobility of residents and users.

RESUMEN: La reputación como valor intrínseco de una empresa es fundamental para su éxito, especialmente en la era digital, donde los consumidores tienen acceso a la información de manera instantánea. El e-branding se ha convertido en una herramienta importante no solo para la gestión sino también para la reputación en línea, permitiendo a las empresas controlar y moldear la percepción de su marca. El presente escrito se enfoca en dilucidar cómo las empresas utilizan esta herramienta para gestionar su reputación en línea, y cómo esto puede impactar en la confianza del consumidor y la imagen de marca. Se exploran y sugieren las estrategias empleadas por las empresas, incluyendo la creación de contenidos positivos, la respuesta a las críticas en línea y la activa participación en las redes sociales. También se examina cómo los consumidores perciben la gestión de la reputación en línea de las empresas, incluyendo la influencia de la autenticidad, la transparencia y la honestidad. Finalmente, se analiza cómo el e-branding puede afectar la confianza del consumidor y la imagen de marca, y cómo las empresas pueden utilizarla de manera efectiva para gestionar su reputación.

ABSTRACT: Reputation as an intrinsic value of a company is essential for its success, especially in the digital age where consumers have instant access to information. E-branding has become an important tool not only for management but also for online reputation, allowing companies to control and shape their brand perception. This paper focuses on elucidating how companies use this tool to manage their online reputation and how this can impact consumer trust and brand image. Strategies employed by companies are explored and suggested, including creating positive content, responding to criticism online, and actively engaging in social media. It also examines how consumers perceive companies' online reputation management, including the influence of authenticity, transparency, and honesty. Finally, it analyzes how e-branding can affect consumer trust and brand image, and how companies can use it effectively to manage their reputation.

Resumen La presente investigación se focalizó en los diferentes tipos de uso (activo/pasivo) que hacen los usuarios de redes sociales y los efectos psicológicos que esto puede conllevar, sobre todo en aquellos sujetos tendientes a compararse con los demás. Por un lado, se examinó el poder predictor de variables relacionadas al uso de redes sociales (i. e., tiempo de conexión, tipo de uso –pasivo/activo–, motivaciones de uso) y la comparación social, sobre el malestar psicológico percibido (i. e., depresión, ansiedad, estrés). Por otro lado, se analizó el rol mediador de la comparación social en la relación entre el uso pasivo de redes sociales y la percepción de malestar psicológico percibido. La muestra fue de conveniencia y estuvo compuesta por 420 sujetos de población general (211 hombres, 209 mujeres), con una media de edad de 40.29 años (DE = 14.93). Se utilizaron los siguientes instrumentos de recolección de datos: Motives for SMSs use Scale; Iowa-Netherlands Comparison Orientation Measure (INCOM-E), Depression, Anxiety and Stress Scale (DASS-21) y una escala diseñada ad-hoc para evaluar el uso activo y pasivo que se hace de redes sociales. Los resultados obtenidos mostraron que la comparación social es el principal predictor de malestar psicológico junto con el motivo de uso relacionado con pasatiempo/exhibicionismo. Además, se pudo comprobar un efecto indirecto del uso pasivo sobre el malestar psicológico considerando a la comparación social como variable mediadora. Por lo tanto, usar pasivamente las redes generaría mayor malestar si el usuario tiende a compararse con quienes realizan las publicaciones.

Abstract The present investigation is framed in the field of cyberpsychology. It aimed to analyze the predictive power of variables related to the use of social media sites –SMSs– (i. e., connection time, type of use –passive / active–, motivations for use) and social comparison, on perceived psychological distress (i. e., depression, anxiety, stress). Furthermore, the mediating role of social comparison in the relationship between the passive use of SMSs and the perceived psychological distress, was also analyzed. It is important to study these topics since different international studies have shown inconsistent and contradictory results regarding the effects of SMSs use on individuals’ well-being (e. g., Frison y Eggermont, 2015; Kraut et al., 2002; Nie et al., 2015). Consequently, some studies have focused on understanding whether the manner in which people use the networks, whether actively or passively, explains how technology impacts on users’ well-being and/or psychological distress (Verduyn et al., 2015). The negative impact of passive use of SMSs can be explained by the Social Comparison Theory (Festinger, 1954), which suggests that people tend to evaluate themselves in comparison with others. These comparisons might generate negative effects on the individual (Giagkou et al., 2018) and, according to Lup et al. (2015), social comparison may be a mediating variable in this association. Regarding participants of the study, a convenience sample of 420 subjects of general population was studied (211 men, 209 women). The mean age was 40.29 years old (SD = 14.93). The majority of the participants (n = 278) lived in Buenos Aires City and surroundings. In terms of variables related to the use of SMSs, when asked about type of SMSs, most participants reported using more than one SMS, mainly Facebook (72 %) and Instagram (57 %). Regarding time spent on SMSs, 60 % of the respondents used their favorite SMS more than three times a day. The mean daily time engaged on all the SMSs exceeded five hours. Data were gathered using the Motives for SMSs use Scale (Lupano Perugini y Castro Solano, 2021a), the Iowa-Netherlands Comparison Orientation Measure (INCOM-E) (Buunk et al., 2005; Gibbons y Buunk, 1999), the Depression, Anxiety and Stress Scale (DASS-21) (Antúnez y Vinet, 2012; Lovibond y Lovibond, 1995). Furthermore, a survey to assess individuals’ use of social networks was designed. The first part explored the most frequently used SMSs, the number and type of friends/followers, and the time spent on SMSs. The main SMSs were listed and participants were asked to indicate whether they used them or not, and if they did, they rated the amount of time spent on SMSs daily. The total amount of time per day was also surveyed. The second part of the survey was designed based on The Passive Active Use Measure (PAUM, Gerson et al., 2017) and some users’ suggestions. This instrument assesses the frequency of certain activities performed on the networks to find out if participants make active use (e. g., posting information, commenting) or passive use (e. g., viewing profiles and posts, scrolling). The obtained results showed that social comparison is the main predictor of psychological distress. The motivation for use related to pass time / exhibitionism was also a significant predictor. In addition, an indirect effect of passive use on perceived psychological distress could be verified, considering social comparison as a mediating variable. Therefore, using the social networks passively would generate greater discomfort if the user tends to compare themselves with those who make the publications. The results of this study allow both users and healthcare and education providers to have greater knowledge of the consequences of using social media on individuals’ overall well-being, and to promote their proper use.

Resumen La injusticia en las transiciones energéticas es una problemática percibida en la inequidad de participación en la toma de decisiones entre los diversos actores que conforman a los sistemas sociotécnicos de energía, donde la sociedad suele desempeñar un papel de usuario consumidor final dentro de la red del sistema. La importancia de tomarlo en consideración radica en que esa inequidad puede contribuir en una baja aceptación social y falta de confianza pública en el proceso de transición energética, lo cual resulta fundamental para definir el curso del proceso. Por medio de un estudio cualitativo de alcance exploratorio, el objetivo del artículo es estudiar la percepción de los ciudadanos como actores en el proceso de transición energética desde un enfoque de justicia procesal, y contribuir a la línea de investigación del estudio social de la energía desde las ciencias sociales.

Abstract Injustice in energy transitions is a problem perceived in the inequity of participation in decision-making among the actors that shape socio-technical energy systems, where society usually plays the role of end user within the system network.The importance of taking it into consideration lies in the fact that this inequity can contribute to low social acceptance and lack of public confidence in the energy transition process, which is essential to define the course of the process.Through a qualitative study with an exploratory scope, the objective of this article is to study the perception of citizens as actors in the energy transition process from a procedural justice approach, and to contribute to the research of social study of energy through the social sciences.

Abstract The present investigation originates under the objective of designing a software with Matlab that allows calculating the abrasive wear rate of spur and helocal gears with involute profile. Where, the unstudied generalities about the design of gears have generated negative consequences in functionality and have generated catastrophic failures that have produced unexpected stoppages of mechanical processes, for which understanding their causes become essential. Considering, for the calculation of the abrasive wear of the tribological pairs in heavy machinery, it will depend on the degree of grinding or size of the base gear, the lubrication regime and the geometric conditions that determine the nature of tribological contact, as well as the time and speed of use of heavy machinery. Initially, the theoretical environment that makes up the study based on the main components such as: gears, lubrication, steel, heat treatments and finally Matlab is established. Next, the mathematical models of Archard and Kraglesky were established, which were adapted to the circumstances of the problem and based on this information, a software capable of calculating the rate of abrasive wear was formulated using a graphical Matlab user tool; We proceed to execute the manual calculation with the determined variables taking experimental data obtained from previous investigations and that comply with the variables determined for the execution of the mathematical process, given that the results generated through the software can be tabulated, graphed in Excel and verified. With manual mathematical development. Looking for the comparison, differentiation and trend of the behavior of the wear rate, varying the parameters involved in the process using the two mathematical models proposed.

Resumen La presente investigación se originó con el objetivo de diseñar un software con Matlab que permita calcular la velocidad de desgaste abrasivo de engranajes rectos y helicoidales de perfil evolvente. Donde, las generalidades no estudiadas sobre el diseño de engranajes han generado consecuencias negativas en la funcionalidad y fallas catastróficas que han producido paras improvistas de procesos mecánicos, por lo cual entender las causas de los mismos se vuelve fundamental. El cálculo del desgaste abrasivo de los pares tribológicos en maquinaria pesada dependerá del grado de trituración o tamaño de las partículas abrasivas, la dureza, el material del engranaje base, el régimen de lubricación y las condiciones geométricas que determinen la naturaleza del contacto tribológico, así como el tiempo y velocidad de uso de la maquinaria pesada. Inicialmente, se establece el entorno teórico que compone el estudio basado en los principales componentes como engranajes, lubricación, el acero, los tratamientos térmicos y finalmente Matlab. Seguidamente, se establecieron los modelos matemáticos de Archard y Kraglesky que fueron adaptadas a las circunstancias del problema y en función de esta información formular un software capaz de calcular la velocidad de desgaste abrasivo mediante una herramienta gráfica de usuario de Matlab. Se procede a ejecutar el cálculo manual con las variables determinadas, tomando datos experimentales obtenidos de investigaciones previas y que cumplan con las variables determinadas para la ejecución del proceso matemático, dado que los resultados generados a través del software puedan ser tabulados, graficados en Excel y comprobados con el desarrollo matemático manual. Buscando la comparación, diferenciación y tendencia del comportamiento de la velocidad de desgaste, variando los parámetros involucrados en el proceso utilizando los dos modelos matemáticos planteados.

ABSTRACT Introduction: One of the functions in the management of hemodialysis units is to evaluate user satisfaction regarding the care provided by the nursing team to identify and correct deficient areas, and which also makes it possible to evaluate the results of care that constitute the axis of the benefits. Objective: To determine the relationship between the level of satisfaction and the quality of health care in patients with hemodialysis treatment in a public hospital. Material and Method: study with a quantitative approach, non-experimental design, descriptive and correlational cross-sectional type. We worked with a representative sample of hemodialysis patients, to whom the SERVQUAL survey was applied to assess the quality of care; and a user satisfaction questionnaire validated with a Cronbach’s Alpha reliability of 0.84 and 0.91 respectively. Results: 60 patients were studied, with a mean age of 56.6±15.4 years. Spearman’s Rho coefficient (R=0.385) found a direct correlation between the quality of care variables and patient satisfaction in hemodialysis (p=0.002). On the other hand, 58.3% of patients reported a level of slight dissatisfaction regarding the care they receive, and the dimensions to be improved were safety and accessibility. Conclusion: There is a statistically significant correlation between the study variables, which implies that high levels of quality of care correspond to high levels of satisfaction in users with hemodialysis treatment in a public hospital.

RESUMEN Introducción: Una de las funciones en la gestión de unidades de hemodiálisis, es evaluar la satisfacción del usuario sobre la atención que brinda el equipo de enfermería para identificar y corregir áreas deficitarias, y que además permite evaluar los resultados del cuidado que constituyen el eje de las prestaciones asistenciales. Objetivo: Determinar la relación entre el nivel de satisfacción y la calidad de atención de salud percibida en pacientes con tratamiento de hemodiálisis de un hospital público de Perú. Material y Método: Estudio de enfoque cuantitativo, diseño no experimental, tipo descriptivo y correlacional de corte transversal. Se trabajó con una muestra representativa de pacientes en hemodiálisis, a quienes se les aplicó la encuesta SERVQUAL modificada para evaluar la calidad de atención; y un cuestionario de satisfacción al usuario validados con una confiabilidad Alfa de Cronbach de 0,84 y 0,91 respectivamente. Resultados: Se estudiaron 60 pacientes, con edad media de 56,6±15,4 años. El coeficiente Rho de Spearman encontró una correlación directa entre las variables calidad de atención percibida y satisfacción del paciente en hemodiálisis (R=0,385, p=0,002). Por otro lado, el 58,3% de pacientes refirieron un nivel de insatisfacción leve respecto a la atención que reciben, y las dimensiones por mejorar fueron seguridad y accesibilidad. Conclusión: Existe una asociación significativa entre las variables de estudio; es decir, que niveles altos de calidad de atención se corresponden con niveles altos de satisfacción en usuarios con tratamiento de hemodiálisis en un hospital público.

Resumen: Las plataformas de compras en línea están creciendo a un ritmo sin precedentes en todo el mundo. Estas plataformas se basan principalmente en motores de búsqueda, que todavía se basan principalmente en la base de conocimientos y utilizan palabras clave que coinciden para encontrar productos similares. Sin embargo, los clientes quieren un enfoque más interactivo que sea conveniente y confiable para consultar productos relacionados. En este artículo, proponemos una idea novedosa de buscar productos en un sistema de compra online utilizando un modelo de chatbot que utiliza Deep Learning el cual procesa imágenes y texto para generar respuestas al cliente. Un usuario puede proporcionar una imagen o dar una descripción del producto que busca, y se le presentarán productos similares basados en imágenes. El sistema de recomendación propuesto se basa en la recuperación de imágenes basadas en el contenido brindado. La evaluación del modelo propuesto se divide en dos partes: si se realiza a través de imágenes genera un 80.6% de precisión y si se realiza por texto presenta un 75% de precisión.

Abstract: Online shopping platforms are growing at an unprecedented rate around the world. These platforms are mostly based on search engines, which are still mostly knowledge base based and use matching keywords to find similar products. However, customers want a more interactive approach that is convenient and reliable for viewing related products. In this article, we propose a novel idea of searching for products in an online shopping system using a chatbot model that uses Deep Learning which processes images and text to generate responses to the customer. A user can provide a picture or give a description of the product they are looking for, and they will be presented with similar products based on the images. The system of proposed recommendations is based on the recovery of images based on the content provided. The evaluation of the proposed model is divided into two parts: if it is done through images it generates 80.6% accuracy and if it is done through text it has 75% accuracy.

Abstract The scope of the study was to typify the violence suffered by the homeless population and analyze the associated factors in a medium-sized municipality in Minas Gerais. A cross-sectional study was conducted and data about sociodemographic status, health, risk behaviors and occurrence of violence among the homeless was collected. Multivariate logistic regression was performed to verify the association between exposure and outcomes. Of the 85 respondents, the majority were male (75.3%), aged between 40 and 59 years (59.5%), non-white (86.3%), smokers (69.4%), alcoholics (80.7%) and drug users (53.6%). The overall prevalence of violence was 62.3%. The types of violence most reported were verbal and physical aggression and threats. Being a woman (OR 42.1; 95%CI 27.8-638.0) and being non-white (OR 9.02; 95%CI 1.33-61.1) were associated with a higher risk of experiencing violence. Having no morbidity (OR 0.14; 95%CI 0.03-0.62) and living on the streets for up to five years (OR 0.17; 95%CI 0.04-0.71) revealed a negative association. It was observed how violence is present in the urban context associated with sex, race, self-reported morbidity and time living on the streets.

Resumo O estudo objetivou tipificar a violência sofrida pela população em situação de rua (PSR) e analisar os fatores associados em um município de médio porte de Minas Gerais. Foi efetuado um estudo epidemiológico transversal analítico, que utilizou um questionário estruturado para obter informações sobre dados sociodemográficos, saúde, comportamentos de risco e ocorrência de violência entre a PSR. Realizou-se regressão logística multivariada para verificar a associação entre exposições e desfecho. Dos 85 entrevistados, a maioria era do sexo masculino (75,3%), com idade entre 40 a 59 anos (59,5%), não brancos (86,3%), tabagistas (69,4%), etilistas (80,7%) e usuário de drogas ilícitas (53,6%). A prevalência geral de violência foi de 62,3%. Os tipos de violência mais relatados foram agressão verbal, física e ameaças. Ser mulher (OR 42,1; IC95% 27,8-638,0) e ser de cor não branca (OR 9,02; IC95% 1,33-61,1) estiveram associados ao maior risco de sofrer violência. Não ter morbidade (OR 0,14; IC95% 0,03-0,62) e viver nas ruas por até cinco anos (OR 0,18; IC95% 0,04-0,71) apresentaram associação negativa. Observa-se como a violência encontra-se presente no contexto urbano associada a sexo, raça, morbidade autorreferida e tempo de vida na rua.

Resumo O estudo objetivou tipificar a violência sofrida pela população em situação de rua (PSR) e analisar os fatores associados em um município de médio porte de Minas Gerais. Foi efetuado um estudo epidemiológico transversal analítico, que utilizou um questionário estruturado para obter informações sobre dados sociodemográficos, saúde, comportamentos de risco e ocorrência de violência entre a PSR. Realizou-se regressão logística multivariada para verificar a associação entre exposições e desfecho. Dos 85 entrevistados, a maioria era do sexo masculino (75,3%), com idade entre 40 a 59 anos (59,5%), não brancos (86,3%), tabagistas (69,4%), etilistas (80,7%) e usuário de drogas ilícitas (53,6%). A prevalência geral de violência foi de 62,3%. Os tipos de violência mais relatados foram agressão verbal, física e ameaças. Ser mulher (OR 42,1; IC95% 27,8-638,0) e ser de cor não branca (OR 9,02; IC95% 1,33-61,1) estiveram associados ao maior risco de sofrer violência. Não ter morbidade (OR 0,14; IC95% 0,03-0,62) e viver nas ruas por até cinco anos (OR 0,18; IC95% 0,04-0,71) apresentaram associação negativa. Observa-se como a violência encontra-se presente no contexto urbano associada a sexo, raça, morbidade autorreferida e tempo de vida na rua.

Abstract The scope of the study was to typify the violence suffered by the homeless population and analyze the associated factors in a medium-sized municipality in Minas Gerais. A cross-sectional study was conducted and data about sociodemographic status, health, risk behaviors and occurrence of violence among the homeless was collected. Multivariate logistic regression was performed to verify the association between exposure and outcomes. Of the 85 respondents, the majority were male (75.3%), aged between 40 and 59 years (59.5%), non-white (86.3%), smokers (69.4%), alcoholics (80.7%) and drug users (53.6%). The overall prevalence of violence was 62.3%. The types of violence most reported were verbal and physical aggression and threats. Being a woman (OR 42.1; 95%CI 27.8-638.0) and being non-white (OR 9.02; 95%CI 1.33-61.1) were associated with a higher risk of experiencing violence. Having no morbidity (OR 0.14; 95%CI 0.03-0.62) and living on the streets for up to five years (OR 0.17; 95%CI 0.04-0.71) revealed a negative association. It was observed how violence is present in the urban context associated with sex, race, self-reported morbidity and time living on the streets.

ABSTRACT This article presents, analyzes, and discusses why and how one can think about the insertion of technology linked to science and computing for children aged 4 and 5 years old in early childhood education. The reflections presented here support the work carried out since 2018 by the Project Learning and Experimenting with Technology and Science in the Education of Children Aged 4 to 5 Years Old. It seeks to put aside the thought that reduces contact with technology to tablets, cell phones or even the assembly of robotics kits. In this sense, based on the fields of neuroscience and cultural historical theory to think about child development and by the concept of active user, i.e., one that uses and creates computer technologies in a critical, meaningful, reflective, and ethical way, we understand that technology involves all human creations that alter the natural, cultural, and social environment in which we find ourselves. We recognize the dangers for the development of children and the reductionism of children’s contact with technology and propose a work that does not disassociate science, mathematics, design, engineering, and computing centered on elements of children’s daily lives, built with hands-on learning.

RESUMO O presente artigo apresenta, analisa e discute por que e como pode se pensar a inserção da tecnologia atrelada às ciências e à computação para crianças de 4 e 5 anos na educação infantil. As reflexões aqui exibidas amparam o trabalho realizado desde 2018 no Projeto Aprendendo e Experimentando Tecnologia e Ciências na Educação de Crianças de 4 e 5 Anos. Procura-se deixar de lado o pensamento que reduz o contato com a tecnologia a tablets, celulares ou mesmo montagem de kits de robótica. Nesse sentido, calcados pelos campos da neurociência e da teoria histórico-cultural para pensar o desenvolvimento infantil e pelo conceito de usuário ativo, i.e., aquele que utiliza e cria tecnologias computacionais de forma crítica, significativa, reflexiva e ética, compreendemos que a tecnologia envolve todas as criações humanas que alteram os ambientes natural, cultural e social no qual nos encontramos. Reconhecemos os perigos para o desenvolvimento pleno das crianças que envolvem ao mesmo tempo o reducionismo operado no contato com a tecnologia e propomos um trabalho que não desvincule ciências, matemática, design, engenharia e computação centrado em elementos do cotidiano das crianças.