96 research outputs found

    Availability by Design:A Complementary Approach to Denial-of-Service

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    Síndrome de Burnout y bienestar psicológico en tiempos de COVID-19 en el personal del Destacamento de Tumbes,2022

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    La presente investigación tuvo como objetivo determinar la relación entre el Sindrome de Burnout o Sindrome del trabajador Quemado y el Bienestar Piscológico en tiempos de COVID-19, en el personal del Destacamento de Tumbes en el año 2022. La metodología fue de tipo aplicativa, no experimental, descriptivo – correlacional, contó con una muestra de 220 personas que trabajan en el destacamento de Tumbes, pero por criterio de exclusión la muestra final fue de 170. La técnica de recolección de datos fue mediante el test Maslach Burnout Inventory (Maslach – 1986) para el Síndrome de Burnout y el Cuestionario de Bienestar Psicológico de Ryff (Carol Ryff-1989) para el Bienestar Psicológico, el índice de confiabilidad del primer cuestionario obtuvo una puntuación de Alpha de Cronbach = 0.95 y para el segundo cuestionario 0.96. Los resultados obtenidos mostraron que no existe una relación entre ambas variables con una significancia igual a 0.303 y una correlación de variables del Rho= 0.079. Lo que nos llevó a concluir que no existe una relación significativa y directa del Sindrome de Burnout y Bienestar Psicológico en el personal del destacamento de Tumbes en el año 2022

    A calculus for attribute-based communication

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    The notion of attribute-based communication seems promising to model and analyse systems with huge numbers of interacting components that dynamically adjust and combine their behaviour to achieve specific goals. A basic process calculus, named AbC, is introduced that has as primitive construct exactly attribute-based communication and its impact on the above mentioned kind of systems is considered. An AbC system consists of a set of parallel components each of which is equipped with a set of attributes. Communication takes place in a broadcast fashion and communication links among components are dynamically established by taking into account interdependences determined by predicates over attributes. First, the syntax and the reduction semantics of AbC are presented, then its expressiveness and effectiveness is demonstrated by modelling two scenarios from the realm of TV streaming channels. An example of how well-established process calculi could be encoded into AbC is given by considering the translation into AbC of a prototypical π-calculus process

    The two-echelon capacitated vehicle routing problem: models and math-based heuristics

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    Multiechelon distribution systems are quite common in supply-chain and logistics. They are used by public administrations in their transportation and traffic planning strategies, as well as by companies, to model own distribution systems. In the literature, most of the studies address issues relating to the movement of flows throughout the system from their origins to their final destinations. Another recent trend is to focus on the management of the vehicle fleets required to provide transportation among different echelons. The aim of this paper is twofold. First, it introduces the family of two-echelon vehicle routing problems (VRPs), a term that broadly covers such settings, where the delivery from one or more depots to customers is managed by routing and consolidating freight through intermediate depots. Second, it considers in detail the basic version of two-echelon VRPs, the two-echelon capacitated VRP, which is an extension of the classical VRP in which the delivery is compulsorily delivered through intermediate depots, named satellites. A mathematical model for two-echelon capacitated VRP, some valid inequalities, and two math-heuristics based on the model are presented. Computational results of up to 50 customers and four satellites show the effectiveness of the methods developed

    The therapeutic effect of mesenchymal stem cell transplantation in experimental autoimmune encephalomyelitis is mediated by peripheral and central mechanisms

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    Stem cells are currently seen as a treatment for tissue regeneration in neurological diseases such as multiple sclerosis, anticipating that they integrate and differentiate into neural cells. Mesenchymal stem cells (MSCs), a subset of adult progenitor cells, differentiate into cells of the mesodermal lineage but also, under certain experimental circumstances, into cells of the neuronal and glial lineage. Their clinical development, however, has been significantly boosted by the demonstration that MSCs display significant therapeutic plasticity mainly occurring through bystander mechanisms. These features have been exploited in the effective treatment of experimental autoimmune encephalomyelitis, an animal model of multiple sclerosis where the inhibition of the autoimmune response resulted in a significant amelioration of disease and decrease of demyelination, immune infiltrates and axonal loss. Surprisingly, these effects do not require MSCs to engraft in the central nervous system but depend on the cells' ability to inhibit pathogenic immune responses both in the periphery and inside the central nervous system and to release neuroprotective and pro-oligodendrogenic molecules favoring tissue repair. These results paved the road for the utilization of MSCs for the treatment of multiple sclerosis

    Comparative analysis of actigraphy performance in healthy young subjects

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    Sleep-related health disorders are increasing worldwide; diagnosis and treatment of such sleep diseases are commonly invasive and sometimes unpractical or expensive. Actigraphy has been recently introduced as a tool for the study of sleep and circadian disorders; however, there are several devices that claim to be useful for research and have not been thoroughly tested. This comparative study provides activity, sleep and temperature information regarding several of the most commonly used actigraphers: Micro-Mini Motion Logger; Act Trust; Misfit Flash; Fitbit Flex & Thermochron. Twenty-two healthy young subjects were assessed with five different commercial actigraphs (Micro-Mini Motionlogger Watch, Condor Act Trust, MisFit Flash and Fitbit Flex) and a temperature recorder (Thermochron), and also completed a sleep diary for a week. There were not significant differences in the analysis of rest-activity pattern between devices. Temperature rhythm comparison between the Act Trust and the Thermochron showed significant differences in rhythm percentage (p<0.05) and mesor (p<0.0563) but not in amplitude or acrophase. Although data accessibility and ease of use was very different for the diverse devices, there were no significant differences for sleep onset, total sleep time and sleep efficiency recordings, where applicable. In conclusion, depending on the type of study and analysis desired (as well as cost and compliance of use), we propose some relative advantages for the different actigraphy/temperature recording devices.Fil: Bellone, Giannina J.. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Cronobiología; Argentina. Pontificia Universidad Católica Argentina "Santa María de los Buenos Aires". Instituto de Investigaciones Biomédicas. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas; ArgentinaFil: Plano, Santiago Andrés. Pontificia Universidad Católica Argentina "Santa María de los Buenos Aires". Instituto de Investigaciones Biomédicas. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas; Argentina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Cronobiología; ArgentinaFil: Cardinali, Daniel Pedro. Pontificia Universidad Católica Argentina "Santa María de los Buenos Aires". Instituto de Investigaciones Biomédicas. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas; ArgentinaFil: Pérez Chada, Roberto Daniel. Hospital Universitario Austral; ArgentinaFil: Vigo, Daniel Eduardo. Pontificia Universidad Católica Argentina "Santa María de los Buenos Aires". Instituto de Investigaciones Biomédicas. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas; ArgentinaFil: Golombek, Diego Andrés. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Cronobiología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

    Revalidação do painel sorológico positivo para sífilis – uma ferramenta no controle da qualidade de kits para diagnóstico da sífilis

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    Introduction: Syphilis is a slowly evolving infectious disease caused by a gram-negative bacterium in the group of spirochetes, exclusive to humans, called Treponema pallidum. In the fight against syphilis, an important tool is the laboratory analysis through products for in vitro diagnosis that allows the diagnosis of the disease. The effectiveness of these products is assessed against serological panels composed of true positive and negative samples. Objective: To reassess the reactivity of the 153 samples that make up the positive serological panel for  syphilis at the Laboratory of Blood and Blood Products (LSH) of the National Institute for Quality Control in Health (INCQS). Method: Revalidation of the serological panel for syphilis through retrospective analysis of LSH laboratory data from 2011 to 2015, meeting the positivity criteria in 5 different methodologies and sample volume ≥ 10 mL. Results: Of the 172 initial samples, 153 had stock volume ≥ 10 mL. In the proposed period, 46 syphilis diagnosis products were identified with a satisfactory report, comprising 5 different methodologies. The analytical results of the 153 samples belonging to the positive panel were analyzed in the protocols for recording the results of these products. After re-evaluating the reactivity of the 153 samples from the positive panel 130, they were revalidated as positive while 23 were considered to be indeterminate. Conclusions: The positive panel for revalidated syphilis will remain an essential instrument in the previous analysis for the purpose of regularizing kits for diagnosing the disease.Introdução: A sífilis é uma doença infecciosa de evolução lenta causada por uma bactéria Gramnegativa do grupo das espiroquetas, exclusiva do ser humano, chamada Treponema pallidum.  No combate da sífilis, uma importante ferramenta é a análise laboratorial através de produtos para diagnóstico in vitro que permite o diagnóstico da doença. A eficácia destes produtos é  avaliada frente a painéis sorológicos compostos por amostras verdadeiro positivas e negativas. Objetivo: Reavaliar a reatividade das 153 amostras que constituem o painel sorológico positivo para sífilis do Laboratório de Sangue e Hemoderivados (LSH) do Instituto Nacional de Controle de Qualidade em Saúde (INCQS). Método: Revalidação do painel sorológico para sífilis através de análise retrospectiva de dados laboratoriais do LSH do período de 2011 a 2015 atendendo aos critérios de positividade em cinco metodologias diferentes e volume de amostra ≥ 10 mL.  Resultados: Das 172 amostras iniciais, 153 apresentaram volume de estoque ≥ 10 mL. No período proposto foram identificados 46 produtos para diagnóstico da sífilis com laudo satisfatório compreendendo cinco metodologias diferentes. Os resultados analíticos das 153 amostras pertencentes ao painel positivo foram analisados nos protocolos de registro de resultados destes produtos. Após a reavaliação da reatividade das 153 amostras do painel positivo, 130 foram revalidadas como positivas enquanto 23 foram consideradas como indeterminadas. Conclusões: O painel positivo para sífilis revalidado permanecerá sendo instrumento essencial na análise  prévia para fins de regularização dos kits para diagnóstico da doença

    Educación a distancia para mejorar la calidad del tratamiento del asma en la atención primaria de salud : ensayo clínico aleatorizado grupal - RESPIRANET

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    Objective: The mere dissemination of standard care recommendations has been insufficient to improve clinical results in patients with asthma. The objective of the present study was to evaluate the clinical effectiveness of a multifaceted asthma distance education for primary care providers. Methods: Cluster randomized controlled trial. Full primary care teams were included if they had access to telehealth support and free basic asthma treatment. Before randomization, selected teams indicated asthma patients between 5-45 years old for inclusion. The intervention group received three interactive online sessions, printed educational material, reminders, booklet for patients, and frequent stimulus to use consulting services. The control group received no intervention. Symptomfree days per two weeks was the primary result. Controlled asthma, unscheduled asthma doctor visits, and preventive inhaled corticosteroid use were the secondary results. Six months after intervention, the results were compared with baseline data using generalized estimating equations for repeated measures and clustering effect. Results: Were enrolled 71 primary care teams and 443 individuals. Most patients (60.3%) were female, and 44% were younger than 12 years old. The attendance of interactive sessions by the teams was 50%. The odds ratio (OR) for additional symptom-free day was 1.31 (95%CI 0.61-2.82; p=0.49). For the secondary results, the results were: controlled asthma OR 1.29 (95%CI 0.89-1.87; p=0.18); unscheduled asthma doctor visits OR 0.81 (95%CI 0.60-1.10; p=0.17); and preventive inhaled corticosteroid use OR 1.02 (95%CI 0.71-1.47; p=0.91). Conclusions: Multifaceted distance education in asthma care for primary care providers was not effective to improve patients’ results. Telemedicine needs to deal with significant obstacles in professional education.Objetivo: A mera disseminação de recomendações de cuidados padronizados tem sido insuficiente para melhorar os desfechos clínicos em pacientes com asma. O objetivo do presente estudo foi avaliar a eficácia clínica de uma intervenção educativa multifacetada a distância sobre asma para profissionais da atenção primária à saúde. Métodos: Ensaio clínico randomizado por cluster. Equipes completas de atenção primária foram incluídas se tinham acesso a suporte de telessaúde e tratamento básico gratuito para asma. Antes da randomização, as equipes selecionadas indicaram pacientes asmáticos entre 5-45 anos para inclusão. O grupo de intervenção recebeu três sessões online interativas, material educativo impresso, lembretes, folheto para pacientes e estímulos frequentes para o uso de serviços de consultoria. O grupo controle não recebeu intervenção. O desfecho primário foi dias sem sintomas por duas semanas. Asma controlada, consultas médicas não programadas para asma e uso preventivo de corticosteroides inalatórios foram os desfechos secundários. Seis meses após a intervenção, os resultados foram comparados com a linha de base, usando equações de estimativas generalizadas para medidas repetidas e efeito de agrupamento. Resultados: Foram inscritas 71 equipes de atenção primária e 443 indivíduos. A maioria dos pacientes (60,3%) era do sexo feminino e 44% tinha menos de 12 anos de idade. A frequência das equipes nas sessões interativas foi de 50%. O odds ratio (OR) para dias sem sintomas adicionais foi de 1,31 (IC 95% 0,61-2,82; p=0,49). Para os desfechos secundários, os resultados foram: asma controlada 1,29 (IC 95% 0,89-1,87; p=0,18); visitas não programadas de asma ao médico OR 0,81 (IC 95% 0,60-1,10; p=0,17); e uso preventivo de corticosteroides inalatórios OR 1,02 (IC 95% 0,71-1,47; p=0,91). Conclusões: Ações multifacetadas de educação a distância em cuidados de asma para profissionais de saúde da atenção primária não foram eficazes para melhorar os resultados nos pacientes. A telemedicina precisa lidar com obstáculos significativos na educação profissional.Objetivo: La mera difusión de las recomendaciones de atención estándar ha sido insuficiente para mejorar los resultados clínicos en pacientes con asma. El objetivo del presente estudio fue evaluar la efectividad clínica de una educación multifacética a distancia sobre el asma para los proveedores de atención primaria. Métodos: Ensayo controlado aleatorizado por grupos. Se incluyeron equipos completos de atención primaria si tenían acceso a apoyo de telesalud y tratamiento básico gratuito para el asma. Antes de la aleatorización, los equipos seleccionados indicaron pacientes con asma entre 5-45 años de edad para inclusión. El grupo de intervención recibió tres sesiones interactivas en línea, material educativo impreso, recordatorios, folleto para los pacientes y estímulos frecuentes para utilizar los servicios de consultoría. El grupo control no recibió ninguna intervención. El resultado primario fue días sin síntomas por dos semanas. Los resultados secundarios fueron asma controlada, visitas médicas no programadas para el asma y el uso preventivo de corticosteroides inhalados. Seis meses después de la intervención, los resultados se compararon con los datos de referencia utilizando ecuaciones de estimación generalizadas para medidas repetidas y efecto de agrupación. Resultados: Se inscribieron 71 equipos de atención primaria y 443 personas. La mayoría de los pacientes (60,3%) eran mujeres y el 44% eran menores de 12 años. La asistencia a sesiones interactivas por parte de los equipos fue del 50%. La razón de probabilidades (OR) para un día sin síntomas adicional fue de 1.31 (IC del 95%: 0.61 a 2.82; p=0.49). Para los resultados secundarios, los resultados fueron: asma controlada O 1.29 (IC del 95%: 0.89 a 1.87; p=0.18); visitas al médico para el asma no programadas O 0,81 (IC del 95%: 0,60 a 1,10; p=0,17); y el uso preventivo de corticosteroides inhalados OR 1.02 (IC del 95%: 0.71 a 1.47; p=0.91). Conclusiones: La educación a distancia multifacética en el cuidado del asma para los proveedores de atención primaria no fue efectiva para mejorar los resultados de los pacientes. La telemedicina debe enfrentar obstáculos significativos en la educación profesional.Teleducaçã
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