741 research outputs found
Conflicto trabajo-familia: un estudio con conductores profesionales
Este estudo pretende contribuir para a compreensão do conflito entre trabalho e família em motoristas
profissionais que trabalham com transporte de passageiros e da influência que outras variáveis
possam ter nesse âmbito. Foi analisada especificamente a relação entre o conflito trabalho-família e as variáveis sociodemográficas (idade), do contexto familiar (número e idade dos filhos) e do contexto profissional (duração da jornada de trabalho, satisfação com o trabalho, suporte social dos supervisores e suporte social dos colegas de trabalho). Os dados foram recolhidos por meio de questionário, tendo participado 154 trabalhadores de uma empresa de transportes de passageiros do norte de Portugal. Todos os participantes eram do sexo masculino, e a maioria deles tinha idade entre 40 e 59 anos, eram casados e tinham filhos. Os resultados revelaram que os motoristas
apresentam valores médios relativamente reduzidos de conflito trabalho-família e indicaram que a idade
dos filhos, o número de horas trabalhadas semanalmente e a percepção de suporte dos supervisores constituíram preditores significativos do conflito trabalho-família.This study aims to contribute to the understanding of work-family conflict among professional drivers,
and the influence that other variables may have in that context. We analyzed the relationship between work-family conflict and socio-demographic variables (age), family context (number of children and their ages), and professional context (number of working hours, job satisfaction, and perception of supervisor and co-worker social support) in particular. Data were collected through a questionnaire administered to 154 male workers of a passenger transport company in the north of Portugal. The majority of the participants were aged 40-50, were married, and had children. Data showed that the drivers reported relatively low mean levels of workfamily
conflict. Results also showed that the age of their children, weekly hours worked, and the perception of supervisor support were significant predictors of work-family conflict.Este estudio pretende contribuir a la comprensión del conflicto entre trabajo y familia en conductores profesionales que trabajan con el transporte de pasajeros, y de la influencia que otras variables puedan tener en ese contexto. Específicamente, se analizó la relación entre el conflicto trabajo-familia y las variables
sociodemográficas (edad), el contexto familiar (número de hijos y su edad), así como el contexto profesional
(duración de la jornada de trabajo, satisfacción laboral, apoyo social de los supervisores y soporte social de los compañeros de trabajo). Los datos se recogieron mediante un cuestionario aplicado a 154 trabajadores hombres de una empresa de transporte de pasajeros del norte de Portugal. La mayoría de los participantes tenía entre 40 y 59 años, estaban casados y tenían hijos. Los resultados muestran que los conductores tienen valores medios relativamente bajos de conflicto trabajo-familia. Los resultados también indicaron que la edad de los hijos, el número de horas trabajadas semanalmente y la percepción de apoyo de los supervisores constituyeron predictores significativos del conflicto trabajo-familia.info:eu-repo/semantics/publishedVersio
A produtividade do subsector hortícola na União Europeia
Este Trabalho Final de Mestrado teve como objetivo proceder a uma análise da produtividade na produção de hortícolas dos países da União Europeia 27 (UE-27) no período 2004-2012.
A metodologia aplicada teve por base o cálculo, em folha Excel, de índices TFP no tempo e no espaço e fez uso da base de dados FADN e do Eurostat. O índice TFP é uma medida de produtividade marginal. No tempo, medem-se flutuações de um ano para o outro. No espaço, medem-se flutuações de cada país em relação à média da UE. A análise foi seguida de uma análise Cluster feita em SPSS, onde se distinguiram grupos de países de acordo com os índices TFPt e TFPs médios obtidos. Por fim foi corrida uma regressão em STATA, de forma a perceber que variáveis influenciam as variações de TFP.
Os resultados mostram que os países com índices TFPt maiores e/ou maior evolução são a Hungria, a Letónia e a República Checa. Os países com índices TFPs maiores e/ou maior evolução do TFP são a Itália, a Espanha e a Lituânia.
Com a análise K-means Cluster foi possível identificar quatro grupos de países que se distinguem pelo índice TFPs. Sendo estes por ordem decrescente o grupo 1 (Grécia, Espanha, Itália e Lituânia), 2 (Bélgica, Hungria, Polónia e Reino Unido), 3 (Bulgária, Dinamarca, Alemanha, França, Letónia, Holanda, Portugal e Suécia) e 4 (República Checa, Malta, Roménia e Finlândia).
Com a regressão foi possível constatar que para o índice TFPt as variáveis significantes são a crise, a percentagem de SAU em estufa, a intensidade da produção em capital e o tempo sendo que apenas esta última afecta de forma positiva. No índice TFPs, todas as variáveis significativas (intensidade da produção em capital, trabalho familiar e tempo) afectam negativamente.
Palavras-chave: Benchmarking, Índice TFP, Produtividade.The objective of this Master’s final paper was to analyze the productivity in terms of vegetable production in the European Union 27 (EU-27) countries during the years between 2004 and 2012.
The methodology adopted consisted in using FADN and Eurostat databases to compute a Total Factor Productivity (TFP) index in terms of time and space. The TFP index is a measure of marginal productivity. In time, it measures fluctuations in relation to the previous year, while in space, it measures fluctuations of each country in relation to the EU average. Subsequently, the analysis was carried out using the SPSS software through a Cluster analysis that allowed to group the different countries given their average TPFt and TPFs indexes. Lastly, STATA was used to run a truncated regression to understand which variables influence the TFP variations.
Results showed that the countries with greater TFPt indexes and/or higher levels of development are Hungary, Latvia and Czech Republic, whilst for TFPs these countries are Italy, Spain and Lithuania.
Using the K-means Cluster analysis it was possible to identify four groups of countries that distinguish themselves by their TFPs indexes. These are, by descending order, Group 1 (Greece, Spain, Italy and Lithuania), Group 2 (Belgium, Hungary, Poland and the United Kingdom), Group 3 (Bulgaria, Denmark, Germany, France, Latvia, Netherlands, Portugal and Sweden) and Group 4 (Czech Republic, Malta, Romania and Finland).
According to the regression it was possible to conclude that for the TFPt index, the significant variables that explain its variation are the crisis, the percentage of SAU in greenhouses, the capital and the time, being the last the only one that affects positively the index. In what concerns the TFPs, the most significant variables are capital, family work ratio and time and they all affect negatively the index
TRENDS ON ANALYTICAL METHODS FOR RESVERATROL, A MAJOR BIOACTIVE
Resveratrol (3,5,4-trans-trihydroxystilbene) is a member of the stilbene group of phenolic compounds, comprising two aromatic rings linked by an ethylene bridge and is considered one of the most promising bioactive compounds due to its bioactivity. Wine is one of the main source of this bioactive compound in Mediterranean diet. Several authors have dedicated their research to the relationship between diet and health, and concerning wine and health studies, ‘‘French Paradox’’ was the starting point.
Resveratrol is found in seeds and skins of grapes and in wines. The red wines are richer than the white ones due to differences in winemaking technology. The amount of resveratrol found in wines varies widely, since a huge number of factors affect its biosynthesis (grape variety, geographic region, climatic conditions, agronomic factors) and its extraction from the solid part of the grapes into the wines (technological practices).
Numerous analytical methods are described in literature to determine resveratrol content in wines, but apart few methods reporting direct injection, a previous sample preparation step is required before the injection into a chromatographic system. Liquid chromatography coupled with a fluorescence detector, a diode array detector or a mass spectrometry detector are the most used separation and identification tools, since the use of gas chromatography also requires a derivative step. Recently, the development of molecular imprinting technology based on a mechanism of molecular recognition, and the further applications of the generated molecularly imprinted polymers (MIPs) as selective sorbents in Solid Phase Extraction (MISPE) or magnetic MIPs (MMIPs) have provided a new versatile tool for the highly selective quantification of resveratrol in wines.
In this chapter, the biosynthesis of resveratrol in grapes, the factors affecting resveratrol content in wines and the current analytical methods for resveratrol determination in wines, will be revisited.
However, the focus of this review will be on the new trends in analytical methods for resveratrol in wines, namely the use of molecularly imprinted polymers (MIP) as a recent and innovative sample preparation methodology
Methods for Biodiversity Assessment: Case Study in an Area of Atlantic Forest in Southern Brazil
Populations and species are disappearing due to disturbances in the environment caused by human activities. Given, the obvious risk of loss of diversity, it is increasingly necessary to take actions concerning preservation, in which safety features are necessary for measuring the variation of diversity in space and time. The aim of this study was to evaluate the structure and diversity in the arboreal component and natural regeneration in an area of Araucaria Forest in Southern Brazil. The vegetation sampling was performed by analyzing 180 subunits of 10 × 10 m, where all the arboreal individuals and natural regeneration were inventoried. Different alpha and beta indexes of diversity were calculated. The Margalef, Shannon, and the Beta indexes were underestimated, possibly influenced by the size of sample unit. Index Menhinick represented the diversity in a very real form, even in small sampling units. The indexes of Simpson and MacIntosh denote low dominance and the equity indexes showed high uniformity in species
Consumption of medicinal plants and herbal medicines by children and adolescents with chronic conditions: a survey in a tertiary-care outpatient clinic
Objectives. Medicinal plants and herbal medicines are widely used worldwide. However, patients with chronic health conditions or their caregivers do not often disclose these practices to their healthcare providers, leading to potentially severe interactions with current treatments, especially in children. We aimed to describe the prevalence of the use of medicinal plants and herbal medicines by children and adolescents with chronic health conditions and whether their physicians were informed about it. Methods. We conducted a cross-sectional electronic survey on parents and caregivers of children and adolescents with chronic health conditions seen at a university, tertiary-care pediatric outpatient clinic. The common names of the plants cited by respondents were reviewed and Latin names of the species were provided whenever possible. Results. From 20,213 text messages sent in May and June 2021, 521 valid responses were obtained. The prevalence of the use of medicinal plants and herbal medicines was 34.6%, most without a medical prescription (self-medication), and few physicians (4.0%) were aware of it. The five most used species were: Mentha spicata L. (mint), Foeniculum vulgare Mill. (fennel), “cidreira” (a common name possibly corresponding to Cymbopogon citratus (DC.) Stapf, Melissa officinalis L. or Lippia alba (Mill.) N.E. Br. ex Britton & Wilson, P.), Matricaria chamomilla L. (German chamomile), and Plectranthus barbatus Andrews (boldo). Conclusions. The prevalence of the use of medicinal plants and herbal medicines by children and adolescents with chronic health conditions in a tertiary-care outpatient clinic was 34.6%, and only a few physicians were aware of it.Objetivos. Plantas medicinais e seus derivados são amplamente utilizados no mundo todo. Entretanto, pacientes com condições crônicas de saúde ou seus cuidadores frequentemente não informam essas práticas para seus profissionais de saúde, levando a interações potencialmente graves com os demais tratamentos, especialmente em crianças. Nós objetivamos descrever a prevalência do uso de plantas medicinais e derivados por crianças e adolescentes com condições crônicas de saúde, e se seus médicos foram informados sobre isto. Métodos. Levantamento eletrônico transversal junto a pais e cuidadores de crianças e adolescentes com condições crônicas de saúde atendidos em um serviço ambulatorial pediátrico universitário terciário. Os nomes comuns das plantas citadas pelos participantes foram revisados e os nomes latinos das espécies foram identificados, sempre que possível. Resultados. De 20.213 mensagens de texto enviadas em maio e junho de 2021, 521 respostas válidas foram obtidas. A prevalência de utilização de plantas medicinais e derivados foi de 34,6%, sendo a maioria sem prescrição médica (automedicação), e poucos médicos (4,0%) estavam cientes disto. As cinco plantas mais comumente utilizadas foram: Mentha spicata L. (hortelã), Foeniculum vulgare Mill. (funcho), “cidreira” (possivelmente correspondendo a Cymbopogon citratus (DC.) Stapf, Melissa officinalis L. ou Lippia alba (Mill.) N.E. Br. ex Britton & Wilson, P.), Matricaria chamomilla L. (camomila) e Plectranthus barbatus Andrews (boldo nacional). Conclusões. A prevalência de uso de plantas medicinais e derivados por crianças e adolescentes com condições crônicas de saúde em um serviço ambulatorial pediátrico terciário foi de 34,6%, com grande potencial para interações, e somente poucos médicos estavam cientes disto
Teacher training and the use of the abacus in the practice of quantifying physical quantities
Background: several studies in mathematics education show the use of the physical abacus in the activities of teachers in initial graduation, emphasising, in their manipulation, practices with addition or subtraction operations, or yet, which express a direct translation of the numeral to the physical abacus and, vice versa, without, however, explaining part of the complexity involved the social practice of quantifying physical quantities, which even makes possible the structuring of the numeral. Objective: to show that the use of the abacus by teachers in initial training may not ensure the realisation or mastery of the practice of quantifying physical quantities with discrete units. Design: in this sense, a study and research path (SRP) was carried out based on the training of early years teachers. Environment and participants: 25 students in initial training of a degree course at a public educational institution participated in an activity on decimal number system (DNS), but largely positional number system (PNS), proposed based on a problem in an unusual context (for them), they mobilised to face and answer questions. Data collection and analysis: we present an excerpt from the empirical research forwarded by Ferreira (2020) with teachers in initial training. Results: the data observed in the empirical confirms the hypothesis of the existence of a problem regarding the use of the abacus as a possible facilitator in the structuring of non-decimal numbers through the practice of quantifying physical quantities. Conclusions: the results found with the teachers revealed, in addition to the problem of teacher training on what to teach and how to teach numerals, that using the abacus made it difficult, if not hindered, the practice of quantifying physical quantities with discrete units. We also found changes in the quality of the teachers’ relationships with structuring decimal and non-decimal numbers
TAXAS DE MORTALIDADE DE 2005 A 2021 DOS IDOSOS DE BAIXA RENDA BENEFICIÁRIOS DO BPC-IDOSO: Comparação das taxas anuais de mortalidade nos dois primeiros anos da pandemia de COVID-19 em relação às taxas dos anos anteriores
Based on the administrative records of the Continued Payment Benefit (BPC), the hypothesis that there was an increase in mortality among elderly BPC beneficiaries in 2020 and 2021, due to the COVID-19 pandemic, was investigated. Methodologically, SQL was used to extract information from Mantido’s database and calculate crude mortality rates from 2005 to 2021, by sex and age (from 65 to 85 years). The results confirm that there was an increase in the death rate of 18.76%, in 2021, and of 21.64%, in 2020, when compared to the average of mortality rates that occurred between 2005 and 2019. The relevance is highlighted. of analyzing historical records of the BPC, bringing to light fresh new data of this Brazilian program.
.A partir de los registros administrativos del Beneficio Continuo (BPC) investigamos la hipótesis de que hubo un aumento de la mortalidad entre los beneficiarios del BPC-Idoso en 2020 y 2021, debido a la pandemia de COVID-19. Metodológicamente se utilizó SQL para extraer datos de la base de datos “Mantenida” y calcular las tasas brutas de mortalidad de 2005 a 2021, por sexo y edad (de 65 a 85 años). Los resultados confirman que hubo un aumento en la tasa de mortalidad del 18,76%, en 2020, y del 21,64%, en 2021, cuando se compara con el promedio de las tasas de mortalidad ocurridas entre 2005 y 2019. Se destaca la relevancia de analizar el histórico registros del BPC, sacando a la luz datos inéditos de este programa.A partir dos registros administrativos do Benefício de Prestação Continuada (BPC) investiga-se a hipótese de que houve um crescimento da mortalidade entre os beneficiários do BPC-Idoso em 2020 e 2021, devido à pandemia da COVID-19. Metodologicamente, utilizou-se de linguagem SQL para extração dos dados da base “Mantidos” e cálculo das taxas brutas de mortalidade de 2005 a 2021, por sexo e idade (de 65 a 85 anos). Os resultados confirmam que houve um aumento da taxa de óbitos de 18,76%, em 2020, e de 21,64%, em 2021, quando comparadas com a média das taxas de mortalidade ocorridas entre 2005 e 2019. Destaca-se a relevância de se analisar registros históricos do BPC, trazendo à tona dados inéditos desse programa
Comparação entre os valores de referência para CVF, VEF1 e relação VEF1/CVF em brasileiros caucasianos adultos e aqueles sugeridos pela Global Lung Function Initiative 2012
OBJECTIVE:To evaluate the spirometry values predicted by the 2012 Global Lung Function Initiative (GLI) equations, which are recommended for international use, in comparison with those obtained for a sample of White adults used for the establishment of reference equations for spirometry in Brazil.METHODS:The sample comprised 270 and 373 healthy males and females, respectively. The mean differences between the values found in this sample and the predicted values calculated from the GLI equations for FVC, FEV1, and VEF1/FVC, as well as their lower limits, were compared by paired t-test. The predicted values by each pair of equations were compared in various combinations of age and height.RESULTS:For the males in our study sample, the values obtained for all of the variables studied were significantly higher than those predicted by the GLI equations (p < 0.01 for all). These differences become more evident in subjects who were shorter in stature and older. For the females in our study sample, only the lower limit of the FEV1/FVC ratio was significantly higher than that predicted by the GLI equation.CONCLUSIONS:The predicted values suggested by the GLI equations for White adults were significantly lower than those used as reference values for males in Brazil. For both genders, the lower limit of the FEV1/FVC ratio is significantly lower than that predicted by the GLI equations.OBJETIVO:Comparar os valores espirométricos previstos pelas equações da Global Lung Function Initiative (GLI) em 2012, sugeridas como de uso internacional, com aqueles obtidos em uma amostra utilizada para derivação de valores de referência em adultos caucasianos brasileiros.MÉTODOS:A amostra utilizada era composta por 270 homens e 373 mulheres saudáveis. As médias das diferenças entre os valores dessa amostra e os valores previstos calculados a partir das equações da GLI para CVF, VEF1 e VEF1/CVF, assim como seus limites inferiores, foram comparados por teste de t pareado. Os valores previstos pelos pares das equações foram comparados em diversas combinações de idade e estatura.RESULTADOS:Nos homens da amostra, os valores obtidos para todas as variáveis estudadas foram significativamente maiores que aqueles previstos pelas equações da GLI (p < 0,01 para todas). Estas diferenças se tornaram mais evidentes em indivíduos com menor estatura e idade mais avançada. Nas mulheres, somente o limite inferior da relação VEF1/CVF foi significativamente maior na amostra brasileira.CONCLUSÕES:Os valores previstos sugeridos pelas equações da GLI para caucasianos são significativamente menores daqueles utilizados como referência para homens brasileiros. Em ambos os sexos, o limite inferior da relação VEF1/CVF é significativamente menor que o previsto pelas equações GLIFederal University of São PauloFederal University of Campina GrandeCentro Diagnóstico BrasilUNIFESPSciEL
Sociospatial reading of favela : a comparative analysis from organic Portuguese cities
This research decodifies the favelas spatial system through its configuration in comparison to historical organic structures aiming at searching similar self-organized processes. It is intended to observe in which way the configuration of such areas, read through their spatial patterns, affects their sociospatial dynamics and how it gets closer to common strategies for organizing the urban space: in which way favela reproduces historically consolidated spatial patterns inherent to organic cities? The Theory of The Social Logic of Space (Hillier & Hanson, 1984) is the theoretical, methodological and technical approach for this study, allowing to investigate such phenomena by means of its spatial complexity. The sample consists of 120 settlements around the world, explored according to a set of 26 configurational variables (among qualitative and quantitative, both geometric and topological), compared to a group of 45 Portuguese medieval towns (representative of organic cities). Findings show that the favelas recognized spatial patterns are mostly common to those associated with organic structures. Despite being much denser and apparently labyrinthine shapes, the internal dynamics of the favelas reveal positive global relationships. These settlements behave similarly to consolidated urban systems and share common spatial logics throughout world regions and distinct cultures, feature which allows recognizing the self-organization strategy as essential to their structural and survival process
Execução da lista de verificação de segurança cirúrgica em operações pediátricas: avaliação da conformidade
Objetivo: Avaliar a conformidade da execução da lista de verificação de segurança cirúrgica.Métodos: Estudo avaliativo, observacional, transversal e descritivo, com abordagemquantitativa, realizado com 431 cirurgias pediátricas, em hospital público do Distrito Federal,entre agosto de 2017 e fevereiro de 2018. Os dados foram coletados por observação nãoparticipante e analisados por estatística descritiva.Resultados: O checklist foi realizado em 90,3% das cirurgias, no entanto, a completude doinstrumento e a adesão verbal a todos os itens não foram observadas em nenhumprocedimento. 95,4% das cirurgias prosseguiram mesmo com a identificação de falhas emprocessos de segurança. Observou-se checagens inapropriadas, inexatidão do momento deaplicação, execução na ausência de profissionais essenciais e falta de participação ativa.Conclusões: O estudo revelou inconformidades na adesão ao checklist e na execução depráticas seguras, configurando um alerta para o risco sistemático sofrido pelo pacientecirúrgico e para a necessidade de intervenções imediatas.Palavras-chave: Segurança do paciente. Lista de checagem. Centros cirúrgicos. Adesão adiretivas antecipadas
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