Browsing by Author "Nascimento, Diego Carvalho do"

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    Dynamic conditional correlation GARCH : a multivariate time series novel using a bayesian approach.
    (2019) Nascimento, Diego Carvalho do; Xavier, Cleber; Felipe, Israel José dos Santos; Louzada Neto, Francisco
    The Dynamic Conditional Correlation GARCH (DCC-GARCH) mutation model is considered using a Monte Carlo approach via Markov chains in the estimation of parameters, time-dependence variation is visually demonstrated. Fifteen indices were analyzed from the main financial markets of developed and developing countries from different continents. The performances of indices are similar, with a joint evolution. Most index returns, especially SPX and NDX, evolve over time with a higher positive correlation.
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    Longitudinal analysis of prices of real estate rental.
    (2017) Felipe, Israel José dos Santos; Ramos, Ivair Silva; Barros, Thiago de Sousa; Nascimento, Diego Carvalho do
    Purpose The aim of this study was to analyze the real estate market (residential and commercial) from Mariana's city Minas Gerais State. The motivation for choosing this city lies in its importance to the economy of the Minas Gerais State. Design/methodology/approach We conduct a statistical analysis adopting the longitudinal models (fixed and random effects) in 147 properties. The collection of data covered the commercial and residential real estate prices over a period of ten years. Findings The statistical modeling results showed a presence of random variations higher than the typical prices considered in the real estate market. Estimates have also suggested that commercial real estate prices are on average higher than residential ones. Research limitations/implications The analysis could cover real estate prices (residential and commercial) at different times of analysis, but due to the limited expansion of the database, we are unable to conduct more comprehensive statistical analyzes. Originality/value Until this present date, no other research of this nature has been detected, at least in the Brazilian market, which analyzed the real estate market price dynamics by the segmentation as proposed in this study. We believe that based on this work, other researchers will develop similar studies seeking to describe the dynamics of real estate market prices in others important Brazilian' cities. Such information may be relevant to more effective urban planning and delimitation of more efficient public housing policies.
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    Volatility and price integration in commodity market.
    (2017) Felipe, Israel José dos Santos; Andrade, Bernardo Borba de; Carvalho, Rodrigo Ponce de Leon; Nascimento, Diego Carvalho do; Barros, Thiago de Sousa
    A pesquisa pretende verificar a existência de relacionamento de equilíbrio de longo prazo entre o camarão produzido no Brasil e importado, produzido pelos Estados Unidos. Tal motivação se deu pelo fato dos dois países terem mantido relações comerciais de 2001 a 2004. Neste período, eles compartilharam tecnologias, insumos produtivos e outras matériasprimas. Pretende-se investigar países a volatilidade dos preços do camarão desses dois países e testar se esses preços se cointegram em algum período de tempo. A volatilidade dos preços foi realizada através de modelagem multivariada para testes de cointegram e por meio do Vetor Auto-regressivo (VAR e VECM). Foram encontradas evidências que apontaram fracos indícios de relacionamento de longo prazo entre os preços dois países. Como não foi achada a cointegração, também não foi encontrada relação de causalidade entre os preços. Para os agentes de mercado esta informação é válida, pois demonstra que a dependência que o Brasil teve dos insumos produtivos não refletiu nos preços da sua commodity ao longo do tempo.