PREDICTABLE AND PRICE VOLATILITY RISK IN THE BRAZILIAN MARKET INTEGRATION OF SHRIMP

The present paper has the purpose of investigate the dynamics of the volatility structure in the shrimp prices in the Brazilian fish market. Therefore, a description of the initial aspects of the shrimp price series was made. From this information, statistics tests were made and selected univariate models to be price predictors. It´s presented as an exploratory research of applied nature with quantitative approach. The database was collected through direct contact with the Society of General Warehouses of São Paulo (CEAGESP).The results showed that the great variability in the active price is directly related with the gain and loss of the market agents. The price series presents a strong seasonal and biannual effect. The average structure of price of shrimp in the last 12 years was R$ 11.58 and external factors besides the production and marketing (U.S. antidumping, floods and pathologies) strongly affected the prices. Among the tested models for predicting prices of shrimp, four were selected, which through the prediction methodologies of "One Step Ahead" with 12 periods horizon , proved to be statistically more robust. We concluded that the dynamic pricing of commodity shrimp is strongly influenced by external productive factors and that these phenomena cause seasonal effects in the prices. Through statistical modeling is possible to minimize the risk and uncertainty embedded in the fish market, thus, the sales and marketing strategies for the Brazilian shrimp can be consolidated and widespread

Ações do PIBID/UFS na escola – Oficina temática a química do leite

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Evolução na utilização e nos gastos de uma operadora de saúde

Brazil’s aging population and the rising number of people reliant upon the country’s supplementary healthcare system have elicited the concern of public and private managers regarding the increase in healthcare costs. In this paper, the costs per gender, per type of medical expenses and per age group of a major Brazilian self-managed healthcare provider between 2007 and 2013 were analyzed. This healthcare provider is of interest because, besides portraying a single condition of revenue growth restricted to the existing contributors, it also replicates the demographic profile expected for Brazil in 2050, when approximately one-third of its population will be over 60 years of age. The analyses confirm the current literature as they show an increase in healthcare plan usage by the elderly and the difference between admission rates by gender. They also reveal an increase in average length of stay in hospital and the increase in medical costs far above inflation, especially for materials and medicines. It is hoped that this study will help scholars and others interested in comparisons of medical expense trends, especially by age and sex, and that it encourages further collaboration on the sustainability of health insurance providers in Brazil

Metabolismo socioeconômico (MSE)

O metabolismo socioeconômico (MSE) é uma perspectiva teórica e metodológica que tem a pretensão de entender as relações entre as sociedades e a natureza, no sentido de qualificação e quantificação dos impactos biofísicos advindos da apropriação dos seus recursos energéticos e materiais, liberação de resíduos e rejeitos, e efeitos sinérgicos dessas atividades como consequência da ação humana. Partindo dessa abordagem, o presente estudo analisa a inter-relação entre o MSE e economia ecológica (EE), verificando que existe uma convergência teórico-metodológica entre ambas as abordagens. Metodologicamente, o estudo constituiu de um levantamento documental, analisando pesquisas acadêmicas teóricas e aplicadas sobre a temática. Os resultados demonstram que o MSE pode contribuir metodologicamente para a análise de dados e informações na EE, sobretudo na análise macroeconômica, segmento que vem ganhando relevância na última década.The socioeconomic metabolism (SEM) is a theoretical and methodological perspective that pretends to understand the interrelations between nature and society by quantifying and qualifying the biophysical impacts arising from the appropriation of energy and material resources provided by the environment. Based onthis approach, the present study analyses the connections between SEM and ecological economics (EE), indicating that there is a theoretical-methodological convergence between these two approaches. Methodologically, the study consisted of a documentary survey, analysing the academic and applied researches on the subject. The results demonstrated that SEM can be used for an analysis of data and information in EE, especially in the emergent field of ecological macroeconomics

DEMOCRACIA E JURISDIÇÃO: ASPECTOS POLÍTICO-JURÍDICOS DOS LEGITIMADOS A PROPOR AÇÕES DE INCONSTITUCIONALIDADE JUNTO AO SUPREMO TRIBUNAL FEDERAL

Tradicionalmente a interpretação constitucional tem sido encarada como uma atividade eminentemente técnica, restrita, portanto, aos profissionais do meio jurídico. Esse paradigma limita a noção mais ampla de cidadania, na medida em que exclui a maior parte da sociedade de um processo que refletirá amplamente nas prestações positivas do Estado, como os direitos fundamentais e as políticas públicas. A partir da Constituição Federal de 1988 houve a ampliação do rol de legitimados a propor ações de controle concentrado de constitucionalidade, bem como passou-se a admitir uma maior participação de atores externos ao meio jurídico. O artigo tem por escopo analisar esse processo de democratização da interpretação jurídica a partir das proposições de ações de controle de constitucionalidade. Para tanto, usando de dados disponibilizados pelo setor de estatísticas do Supremo Tribunal Federal, foram analisadas todas as iniciativas de Ações de Declaração de Inconstitucionalidade no período de 1988 a 2016. Constatou-se que os avanços no processo de democratização da interpretação constitucional são ainda incipientes, o que se demonstra tanto pelo insulamento dos burocratas jurídicos protagonizando as referidas ações, quanto pela sub-representação de atores representantes da sociedade civil

Causalidade entre renda e saúde: uma análise através da abordagem de dados em painel com os estados do Brasil

Este trabalho tem o objetivo de analisar a relação de causalidade entre renda e saúde, buscando controlar as potenciais diferenças dessa relação ao longo do território brasileiro. Para tanto, três testes de causalidade de Granger para dados em painel, propostos respectivamente por Holtz-Eakin et al. (1988), Granger e Huang (1997) e Hurlin (2005, 2007), são aplicados para uma base de dados com os estados brasileiros, no período compreendido entre 1981-2007. Os principais resultados mostram que as conclusões podem ser enganosas quando são baseadas em testes com uma estrutura homogênea nos parâmetros. E assim, o teste proposto por Hurlin (2005, 2007), que controla os diferentes tipos de heterogeneidade, aponta que, no Brasil, as evidências são mais claras para causalidade no sentido da saúde para a renda.This paper aims to analyze causality relationship between income and health, seeking to control the potential differences of this relation over the Brazilian territory. Three tests for Granger causality in panel data, proposed respectively by Holtz-Eakin et al. (1988), Granger and Huang (1997) and Hurlin (2005, 2007), are applied to a database of Brazilian states over the period 1981-2007. The main results show that conclusions can be misleading when they are based on the causality tests with homogeneous structure parameters. And so, the test proposed by Hurlin (2005, 2007), which controls the different types of heterogeneity, indicates that in Brazil the evidence is clearer for causality in direction from health to income

Analysis of Solid Urban Waste Management in the Rio de Janeiro State Municipalities and the Role of Landfills in the Environmental Impacts Decrease

The urban solid wastes are among the most important types of waste, due to the high quantity produced and the environmental impacts as consequence. This work aimed to study the urban solid wastes management in the Rio de Janeiro state. The data used was acquired from reports from 2010 to 2014 provided by the Secretaria de Estado do Ambiente (SEA) and based on the summary report from State Solid Waste Plan of Rio de Janeiro (PERS) launched in 2013. The final disposal of urban solid waste, per municipality and by state region, and the recycling of household solid waste were analysed. It was found the decreasing dumps number and controlled landfills and the increasing use of sanitary landfills for Rio de Janeiro municipalities in the period of 2010-2014. The region that has the highest percentage of municipalities that use sanitary landfills as the primary destination for trash is the Serrana Region. In the Fluminense Northwest region, all municipalities put their urban solid waste fully in dumps. More than 60 % of municipalities do not follow the urban household waste for recycling and the percentage of waste recycled is very small in most municipalities. The decrease in number of dumps probably occurs due to the attempt each municipality to fit in the National Policy on Solid Waste. However, most of them still failed to tailor the legislation