91 research outputs found

    Requisitos para a prática da gestão estratégica do transporte público : um estudo da DFtrans – Brasilia DF

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    Dissertação (mestrado)—Universidade de Brasília, Faculdade de Tecnologia, Departamento de Engenharia Civil e Ambiental, Programa de Pós-Graduação em Transportes, 2015.Entre os serviços públicos prestados aos cidadãos, o transporte público merece destaque pela sua relação com o crescimento e desenvolvimento econômico e por significar um meio democrático para as pessoas terem acesso a bens, serviços e atividades que contribuem para a qualidade de vida. Apesar de sua importância social o transporte público ainda enfrenta sérios problemas relacionados à baixa qualidade dos serviços. E neste cenário encontram-se os órgãos gestores que precisam agir estrategicamente no cumprimento de suas missões, que em essência é “a promoção e gerenciamento do transporte público para garantir um serviço adequado à população”. No intuito de ampliar as discussões para a busca de melhores serviços, esta pesquisa consiste no desenvolvimento de uma proposta de método para identificar os requisitos essenciais para a prática da gestão estratégica do transporte público utilizando os conceitos do Balanced Scorecard-BSC. Para o alcance dos objetivos utilizou-se um questionário online e os resultados contribuíram para uma prévia compreensão acerca das possibilidades para a implantação de uma gestão estratégica.Among the public services provided to the citizens, the public transportation deserves stand out by his relation with the growth and economic development and for meaning a means democratic for the people to have access to goods, services and activities that contribute for the quality of life. In spite of its social importance, the public transportation still confronts serious problems related to the low quality of the services. In this scenario are the managing agencies that need to act strategically in fulfilling their mission, which in essence is “the promotion and management of the public transportation for guarantees a suitable service to the population”. In order to broaden the discussions in searching better services, this research develops a proposal to assess the public transportation management based in the Balanced Scorecard-BSC concepts. To obtain the aims, it was used an on-line questionnaire, which results contributed for a previous understanding about the possibilities for the strategic management implantation

    Lógistica reversa de veículos no fim de vida: a realidade com vistas à sustentabilidade ambiental

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    O descarte dos veículos em fim de vida impacta direta ou indiretamente, o meio ambiente em função dos resíduos de fabricação. Uma alternativa para diminuir esse problema é a logística reversa de veículos, por ser considerada uma técnica inovadora de reuso, remanufatura e reciclagem destes bens na indústria e mercado automobilísticos. O objetivo deste artigo é apresentar as experiências internacionais e seus resultados como propostas de solução para o descarte dos veículos em fim de vida, e os desafios do Brasil para aprovar leis que regulamentam essa atividade no país.

    Neurological Disorders Depression Inventory for Epilepsy (NDDI-E): brazilian version of a screening instrument

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    INTRODUCTION: Depression is the most common psychiatric comorbidity in epilepsy, being its identification frequently neglected in most epilepsy centers. OBJECTIVE: To evaluate the performance of the Brazilian version of the Neurological Disorders Depression Inventory for Epilepsy (NDDI-E) in a group of patients from a specialized center. METHODS: The recently validated Brazilian version of the NDDI-E was applied to a group of 142 outpatients with epilepsy. We used the MINI-Plus as a gold standard to diagnosis major depressive episode. Results: Forty patients (28.2%) were depressed at the time of evaluation. The ROC curve analysis indicated that the cutoff at 15 (>15) represented the greatest dichotomy between depressed and nondepressed (sensitivity 70.0%, specificity of 87.3%, positive predictive value of 68.3% and negative predictive value of 88.1%). The use of lower cutoff points may eventually be adopted to provide greater sensitivity to the instrument. CONCLUSION: The Brazilian version of NDDI-E is a sensitive and practical tool that can help in tracking depression in epilepsy in order to reduce its underdiagnosis.INTRODUÇÃO: Depressão é a comorbidade psiquiátrica mais frequente na epilepsia, sendo sua identificação frequentemente negligenciada nos centros especializados. OBJETIVO: Avaliar o desempenho da versão brasileira do Inventário de Depressão em Transtornos Neurológicos para a Epilepsia (IDTN-E) em um grupo de pacientes atendidos em um serviço especializado. MÉTODOS: A versão brasileira do ITDN-E foi aplicada em um grupo de 142 pacientes com epilepsia. Foi utilizado o MINI-Plus como padrão ouro para o diagnóstico de episódio depressivo maior. Resultados: Quarenta pacientes (28,2%) apresentavam o diagnóstico de depressão no momento da avaliação. A análise da curva ROC indicou que o ponto de corte em 15 (>15) para o IDTN-E representa dicotomização ótima entre deprimidos e não deprimidos (sensibilidade de 70,0%, especificidade de 87,3%, valor preditivo positivo de 68,3% e valor preditivo negativo de 88,1%). A utilização de pontos de corte inferiores pode eventualmente ser adotada para proporcionar uma maior sensibilidade ao instrumento. CONCLUSÃO: A versão brasileira do IDTN-E é um instrumento sensível e prático que pode auxiliar o rastreamento da depressão na epilepsia, diminuindo o seu subdiagnóstico.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)Hospital Felício Rocho Centro Universitário de Belo HorizonteUniversidade Federal de São Paulo (UNIFESP) Departamento de Neurologia e NeurocirurgiaUniversidade Federal de São Paulo (UNIFESP) Departamento de PsiquiatriaUniversidade Federal de Minas Gerais Faculdade de MedicinaUniversidade Federal de Minas Gerais Instituto de Ciências BiológicasUniversidade Federal de Minas Gerais Hospital das Clínicas Serviço de NeurologiaHospital Felício Rocho Núcleo Avançado de Tratamento das EpilepsiasUniversidade Federal de Minas Gerais Hospital das ClínicasUNIFESP, Depto. de Neurologia e NeurocirurgiaUNIFESP, Depto. de PsiquiatriaSciEL

    Beck Depression Inventory (BDI) and Hamilton Rating Scale for Depression (HAM-D) in patients with epilepsy

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    OBJECTIVE: To determine cutoff points of highest sensitivity and specificity on the Beck Depression Inventory (BDI) and Hamilton Depression Rating Scale (HAM-D) for depression diagnosis in epilepsy. METHODS: Seventy-three patients from a referral center for the treatment of epilepsy underwent neuropsychiatric evaluation. We collected clinical and socio-demographic data, and applied the following instruments: Structured Clinical Interview (MINI-PLUS) for psychiatric diagnosis according to DSM-IV, HAM-D and BDI. RESULTS: At assessment, 27.4% of the patients were depressed and 37% met diagnostic criteria for lifetime major depression. The ROC curve analysis indicated that a score > 16 on the BDI (94.4% sensitivity, 90.6% specificity) and > 16 on the HAM-D (95% sensitivity, 75.5% specificity) revealed great dichotomy between depressed and nondepressed patients. Both instruments showed a negative predictive value exceeding 95%. CONCLUSION: The frequency of major depression is elevated in patients with epilepsy. BDI and HAM-D can help physicians in the identification of depression in epilepsy, reducing its underdiagnosis.OBJETIVO: Determinar os pontos de melhor sensibilidade e especificidade do Inventário de Depressão de Beck (BDI) e da Escala de Avaliação de Depressão de Hamilton (HAM-D) no diagnóstico de depressão associada à epilepsia. MÉTODOS: Setenta e três pacientes de um centro de referência no tratamento da epilepsia foram submetidos à avaliação neuropsiquiátrica. Foram colhidos dados clínicos e sociodemográficos, sendo utilizados os seguintes instrumentos: entrevista clínica estruturada (MINI-PLUS) para diagnóstico psiquiátrico conforme o DSM-IV, HAM-D e BDI. RESULTADOS: No momento da entrevista, 27,4% dos pacientes estavam deprimidos e 37% preenchiam critérios para diagnóstico de depressão maior ao longo da vida. A análise da curva ROC indicou que o ponto de corte em 16 (> 16) para o BDI (sensibilidade de 94,4%, especificidade de 90,6%) e em 16 (> 16) para a HAM-D (sensibilidade de 95%, especificidade de 75,5%) representou dicotomização ótima entre deprimidos e não deprimidos. Ambos os instrumentos apresentaram um valor preditivo negativo superior a 95%. CONCLUSÃO: A frequência de depressão maior é elevada em pacientes com epilepsia. BDI e a HAM-D podem auxiliar o clínico na identificação da depressão associada à epilepsia, diminuindo seu subdiagnóstico.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)Universidade Federal de Minas Gerais Serviço de Neurologia Hospital das ClínicasHospital Felício Rocho Núcleo Avançado de Tratamento das EpilepsiasUniversidade Federal de São Paulo (UNIFESP) Departamento de Neurologia e NeurocirurgiaUniversidade Federal do Estado de São Paulo Laboratório Interdisciplinar de Neurociências ClínicasUniversidade Federal de Minas GeraisUNIFESP, Depto. de Neurologia e NeurocirurgiaSciEL

    Geography and ecology shape the phylogenetic composition of Amazonian tree communities

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    Aim: Amazonia hosts more tree species from numerous evolutionary lineages, both young and ancient, than any other biogeographic region. Previous studies have shown that tree lineages colonized multiple edaphic environments and dispersed widely across Amazonia, leading to a hypothesis, which we test, that lineages should not be strongly associated with either geographic regions or edaphic forest types. Location: Amazonia. Taxon: Angiosperms (Magnoliids; Monocots; Eudicots). Methods: Data for the abundance of 5082 tree species in 1989 plots were combined with a mega-phylogeny. We applied evolutionary ordination to assess how phylogenetic composition varies across Amazonia. We used variation partitioning and Moran\u27s eigenvector maps (MEM) to test and quantify the separate and joint contributions of spatial and environmental variables to explain the phylogenetic composition of plots. We tested the indicator value of lineages for geographic regions and edaphic forest types and mapped associations onto the phylogeny. Results: In the terra firme and várzea forest types, the phylogenetic composition varies by geographic region, but the igapó and white-sand forest types retain a unique evolutionary signature regardless of region. Overall, we find that soil chemistry, climate and topography explain 24% of the variation in phylogenetic composition, with 79% of that variation being spatially structured (R2^{2} = 19% overall for combined spatial/environmental effects). The phylogenetic composition also shows substantial spatial patterns not related to the environmental variables we quantified (R2^{2} = 28%). A greater number of lineages were significant indicators of geographic regions than forest types. Main Conclusion: Numerous tree lineages, including some ancient ones (>66 Ma), show strong associations with geographic regions and edaphic forest types of Amazonia. This shows that specialization in specific edaphic environments has played a long-standing role in the evolutionary assembly of Amazonian forests. Furthermore, many lineages, even those that have dispersed across Amazonia, dominate within a specific region, likely because of phylogenetically conserved niches for environmental conditions that are prevalent within regions

    Geographic patterns of tree dispersal modes in Amazonia and their ecological correlates

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    Aim: To investigate the geographic patterns and ecological correlates in the geographic distribution of the most common tree dispersal modes in Amazonia (endozoochory, synzoochory, anemochory and hydrochory). We examined if the proportional abundance of these dispersal modes could be explained by the availability of dispersal agents (disperser-availability hypothesis) and/or the availability of resources for constructing zoochorous fruits (resource-availability hypothesis). Time period: Tree-inventory plots established between 1934 and 2019. Major taxa studied: Trees with a diameter at breast height (DBH) ≥ 9.55 cm. Location: Amazonia, here defined as the lowland rain forests of the Amazon River basin and the Guiana Shield. Methods: We assigned dispersal modes to a total of 5433 species and morphospecies within 1877 tree-inventory plots across terra-firme, seasonally flooded, and permanently flooded forests. We investigated geographic patterns in the proportional abundance of dispersal modes. We performed an abundance-weighted mean pairwise distance (MPD) test and fit generalized linear models (GLMs) to explain the geographic distribution of dispersal modes. Results: Anemochory was significantly, positively associated with mean annual wind speed, and hydrochory was significantly higher in flooded forests. Dispersal modes did not consistently show significant associations with the availability of resources for constructing zoochorous fruits. A lower dissimilarity in dispersal modes, resulting from a higher dominance of endozoochory, occurred in terra-firme forests (excluding podzols) compared to flooded forests. Main conclusions: The disperser-availability hypothesis was well supported for abiotic dispersal modes (anemochory and hydrochory). The availability of resources for constructing zoochorous fruits seems an unlikely explanation for the distribution of dispersal modes in Amazonia. The association between frugivores and the proportional abundance of zoochory requires further research, as tree recruitment not only depends on dispersal vectors but also on conditions that favour or limit seedling recruitment across forest types

    Geography and ecology shape the phylogenetic composition of Amazonian tree communities

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    AimAmazonia hosts more tree species from numerous evolutionary lineages, both young and ancient, than any other biogeographic region. Previous studies have shown that tree lineages colonized multiple edaphic environments and dispersed widely across Amazonia, leading to a hypothesis, which we test, that lineages should not be strongly associated with either geographic regions or edaphic forest types.LocationAmazonia.TaxonAngiosperms (Magnoliids; Monocots; Eudicots).MethodsData for the abundance of 5082 tree species in 1989 plots were combined with a mega-phylogeny. We applied evolutionary ordination to assess how phylogenetic composition varies across Amazonia. We used variation partitioning and Moran's eigenvector maps (MEM) to test and quantify the separate and joint contributions of spatial and environmental variables to explain the phylogenetic composition of plots. We tested the indicator value of lineages for geographic regions and edaphic forest types and mapped associations onto the phylogeny.ResultsIn the terra firme and várzea forest types, the phylogenetic composition varies by geographic region, but the igapó and white-sand forest types retain a unique evolutionary signature regardless of region. Overall, we find that soil chemistry, climate and topography explain 24% of the variation in phylogenetic composition, with 79% of that variation being spatially structured (R2 = 19% overall for combined spatial/environmental effects). The phylogenetic composition also shows substantial spatial patterns not related to the environmental variables we quantified (R2 = 28%). A greater number of lineages were significant indicators of geographic regions than forest types.Main ConclusionNumerous tree lineages, including some ancient ones (>66 Ma), show strong associations with geographic regions and edaphic forest types of Amazonia. This shows that specialization in specific edaphic environments has played a long-standing role in the evolutionary assembly of Amazonian forests. Furthermore, many lineages, even those that have dispersed across Amazonia, dominate within a specific region, likely because of phylogenetically conserved niches for environmental conditions that are prevalent within regions

    Mapping density, diversity and species-richness of the Amazon tree flora

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    Using 2.046 botanically-inventoried tree plots across the largest tropical forest on Earth, we mapped tree species-diversity and tree species-richness at 0.1-degree resolution, and investigated drivers for diversity and richness. Using only location, stratified by forest type, as predictor, our spatial model, to the best of our knowledge, provides the most accurate map of tree diversity in Amazonia to date, explaining approximately 70% of the tree diversity and species-richness. Large soil-forest combinations determine a significant percentage of the variation in tree species-richness and tree alpha-diversity in Amazonian forest-plots. We suggest that the size and fragmentation of these systems drive their large-scale diversity patterns and hence local diversity. A model not using location but cumulative water deficit, tree density, and temperature seasonality explains 47% of the tree species-richness in the terra-firme forest in Amazonia. Over large areas across Amazonia, residuals of this relationship are small and poorly spatially structured, suggesting that much of the residual variation may be local. The Guyana Shield area has consistently negative residuals, showing that this area has lower tree species-richness than expected by our models. We provide extensive plot meta-data, including tree density, tree alpha-diversity and tree species-richness results and gridded maps at 0.1-degree resolution

    Effect of surgical experience and spine subspecialty on the reliability of the {AO} Spine Upper Cervical Injury Classification System

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    OBJECTIVE The objective of this paper was to determine the interobserver reliability and intraobserver reproducibility of the AO Spine Upper Cervical Injury Classification System based on surgeon experience (< 5 years, 5–10 years, 10–20 years, and > 20 years) and surgical subspecialty (orthopedic spine surgery, neurosurgery, and "other" surgery). METHODS A total of 11,601 assessments of upper cervical spine injuries were evaluated based on the AO Spine Upper Cervical Injury Classification System. Reliability and reproducibility scores were obtained twice, with a 3-week time interval. Descriptive statistics were utilized to examine the percentage of accurately classified injuries, and Pearson’s chi-square or Fisher’s exact test was used to screen for potentially relevant differences between study participants. Kappa coefficients (κ) determined the interobserver reliability and intraobserver reproducibility. RESULTS The intraobserver reproducibility was substantial for surgeon experience level (< 5 years: 0.74 vs 5–10 years: 0.69 vs 10–20 years: 0.69 vs > 20 years: 0.70) and surgical subspecialty (orthopedic spine: 0.71 vs neurosurgery: 0.69 vs other: 0.68). Furthermore, the interobserver reliability was substantial for all surgical experience groups on assessment 1 (< 5 years: 0.67 vs 5–10 years: 0.62 vs 10–20 years: 0.61 vs > 20 years: 0.62), and only surgeons with > 20 years of experience did not have substantial reliability on assessment 2 (< 5 years: 0.62 vs 5–10 years: 0.61 vs 10–20 years: 0.61 vs > 20 years: 0.59). Orthopedic spine surgeons and neurosurgeons had substantial intraobserver reproducibility on both assessment 1 (0.64 vs 0.63) and assessment 2 (0.62 vs 0.63), while other surgeons had moderate reliability on assessment 1 (0.43) and fair reliability on assessment 2 (0.36). CONCLUSIONS The international reliability and reproducibility scores for the AO Spine Upper Cervical Injury Classification System demonstrated substantial intraobserver reproducibility and interobserver reliability regardless of surgical experience and spine subspecialty. These results support the global application of this classification system
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