Mestrado em Economia (FACE)
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Item Poder de monopsônio do Estado e rendimento de trabalhadores dos setores público e privado(Universidade Federal de Goiás, 2017-04-20) Alves, Pamella Kamiya; Casari, Priscila; http://lattes.cnpq.br/1626369969496491; Casari, Priscila; Monsueto, Sandro Eduardo; Santos Neto, Arnaldo BastosThis dissertation investigates the monopsony power of the State and its impact on workers’ incomes, both in the public sector and in the private sector. In addition, this research analyzes the role of the concentration of workers in the public sector in the occupations of teachers in the private sector. To achieve these objectives, income equations are estimated using the quantile regression method, based on PNAD (IBGE) data from 2012 to 2015. The greater the participation of the public sector in the total number of workers, the smaller the income of civil servants. Furthermore, the concentration of workers in the public sector is also relevant for the determination of income in the private sector. The results show that the concentration of workers in the public sector is associated with a negative effect on the incomes of civil servants, while in the private sector the effect is positive.Item Impactos das queimadas e políticas ambientais: uma análise utilizando jogos agregativos(Universidade Federal de Goiás, 2021-03-12) Barbosa, Jessica de Abreu; Maldonado, Wilfredo Fernando Leiva; http://lattes.cnpq.br/2898705867805713; Maldonado, Wilfredo Fernando Leiva; Holanda, Francisco Bruno de Lima; Ribeiro, JussaraBurning and deforestation are relevant problems that affect the environment and the economic growth. The way in which governments deal with the impacts and externalities caused by fire and deforestation decisions can have consequences that affect the country's reputation abroad, causing an environment of uncertainty, affecting investment decisions, in addition to affecting the health of people, the air and water qualities, with consequences on the production itself. Using an aggregative game framework, we provide a model that allows us to find the equilibrium in the producers' burning and deforesting decisions. The equilibrium also allows us to analyze the effect of fines over those decisions seen as costs of the producers. In the Nash equilibrium, fines negatively affect farmers' optimal decisions. To empirically verify the results, we run a Cross-section data regression model using information of the municipalities of the Legal Amazon for the year 2017 and a Panel data regression for the States of the Legal Amazon from 2009 to 2018. The results found indicate that the fines have a negative impact on the deforestation over time, but factors such as poor oversight enforcement hamper the implementation of the assessment policy, making it not as efficient as what previewed in the theoretical model.Item Análise econômica das compensações financeiras pagas por transgressões do limite dos indicadores de continuidade na distribuição de energia elétrica: o caso Celg (2014 a 2016)(Universidade Federal de Goiás, 2018-04-26) Barbosa, Lucas Martins; Monsueto, Sandro Eduardo; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4770161D3; Silva Neto, Waldemiro Alcântara da; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4139717U9; Silva Neto, Waldemiro Alcântara da; Scalco, Paulo Roberto; Queiroz, Antônio Marcos deThe mechanisms for stimulating quality improvement in the provision of the electricity distribution service emerged along the evolution of the regulatory process in the Brazilian electric power sector, with emphasis on: the continuity indicators and the consequences of the poor quality of the services rendered the payment of financial compensation to consumers and the risk of loss of the concession right. From this history, the National Electric Energy Agency - ANEEL, under constant supervision pointed to Celg as one company that had one of the worst rankings in the continuity rankings, and one of the most paid financial compensation to its consumer units. This research investigates the reduction of the volume paid in financial compensation by Celg, about R$ 220 million (reais), between 2014 and 2016. This partnership had a set of information with more over 200 million observations of long-term interruptions in the distribution of electricity and payment of financial compensation. For this analysis, an investigation made of the roots of the current problem of poor quality of service rendering, noting that one of the main factors causing the current scenario is several failures in the regulatory process that occurred throughout the development of the Brazilian electricity sector and, also, the non-investment in periods of technological transition and expansion of the use of electric energy, which Celg is inserted. To mitigate the high amounts paid in financial compensation, two different analyzes carried out in two articles; the first under the method of quantum regressions and the second through an exploratory analysis of spatial data. These analyzes decide two investment policies carried out by Celg, one for the regions where they most paid financial compensation and another for which there was practically no violation of the limits of the continuity indicators. The first proposal is to start corrective investments, improving distribution systems with implementing automation devices of the system (re-closers), while the second proposal is based in the investment in the revision of the systems that paid few compensations, with the aim of avoiding future problems.Item Inferência estatística via bootstrap no modelo de regressão gama unitária(Universidade Federal de Goiás, 2022-09-16) Barroso, Ihuri Nunes; Silva, Tatiane Ferreira do Nascimento Melo da; http://lattes.cnpq.br/2901210654266903; Silva, Tatiane Ferreira do Nascimento Melo da; Milani, Eder Angelo; Monsueto, Sandro EduardoIn Economics, there are many situations involving data restricted to the range (0;1), that is, data of rates and proportions, and there are models that are better suited to this situation, such as the Unit Gamma regression model . However, when the sample size is small, or even moderate, the Statistical Inference of these models is compromised. Estimators, in general, tend to become more biased and test statistics lead to less accurate tests. Thus, it is necessary to use tools that are able to correct the bias of estimators and test statistics, such as the method of bootstrap. In this work, we propose Monte Carlo simulations, via bootstrap, which solve the aforementioned problems. In addition, we study socioeconomic variables that impact energy generation through photovoltaic systems, using the Unit Gamma regression model and Statistical Inference via it bootstrapItem Consumidores discriminam trabalhadores por conta própria? Uma análise empírica para o ano de 2014(Universidade Federal de Goiás, 2018-08-31) Brito, Lorena de Sousa; Monsueto, Sandro Eduardo; http://lattes.cnpq.br/5484881117429853; Monsueto , Sandro Eduardo; Casari, Proscila; Diaz , Mario Ernesto PiscoyaThis dissertation has the main objective to analyze the possible existence of discrimination of the consumer against self-employed workers in Brazil. Assuming that the individuals most likely to suffer this type of discrimination are those who have more contact with customer in their work process (or who deal with image, success or beauty) a two-level visibility classification has been proposed. In this way, the self-employed were categorized by their skin color and degree of exposition of the occupation (or level of contact with the client), resulting in four comparison groups: high visibility caucasian, high visibility blacks and dark-skinned, low visibility caucasian and low visibility blacks and dark-skinned. The incomes were estimated for each of these groups through quantile regressions applied to the PNAD 2014 microdata. Subsequently, the quantum decomposition method was applied to income differentials to decompose on explained and unexplained components. The main results evidenced the presence of consumer discrimination, which is higher for individuals who have a high degree of contact with the customer. Other results show the predominance of black and dark-skinned individuals in low visibility functions. The distribution of caucasian presentes even greater average and variability than the distribution of non caucasian, a result that meets the theoretical model of consumer discrimination applied here.Item Imigrantes haitianos no mercado de trabalho formal brasileiro(Universidade Federal de Goiás, 2021-07-05) Cardoso, Felipe Pureza; Monsueto, Sandro Eduardo; http://lattes.cnpq.br/5484881117429853; Monsueto, Sandro Eduardo; Meireles, Débora Chaves; Antigo, Mariangela FurlanIn 2010, an earthquake hit Haiti and caused thousands of citizens from that country to migrate to Brazil. Therefore, this dissertation aims to analyze how the insertion of Haitian immigrants in the Brazilian labor market takes place, assuming that they are occupied in the segments in which they have greater comparative advantages in relation to the Brazilians nationals. Thus, we estimate typically Mincerian equations through quantile regressions in addition to an Oaxaca-Blinder decomposition in a sample with Haitians, Brazilians in the same occupations and natives in other jobs from the 2019 Annual List of Social Information (RAIS). It is verified that the average salary of those who are working in occupations considered to be Haitian is lower, which may be an indication of the inferior quality and precariousness of these jobs. Furthermore, evidence is found that the wage determinants act differently for each group, valuing Brazilian workers more. In this context, Haitians act as complements to Brazilians who are in different occupations and as substitutes for those who work in the same positions, but only in the lower income brackets.Item Análise do primeiro emprego e seu efeito sobre a trajetória ocupacional do jovem – 2002 a 2016(Universidade Federal de Goiás, 2017-06-12) Carrijo, Bárbara Christina Pereira da Silva; Monsueto, Sandro Eduardo; http://lattes.cnpq.br/5484881117429853; Monsueto, Sandro Eduardo; Casari, Priscila; Antigo, Mariangela FurlanThis dissertation aims to analyze the occupational insertion of young people in the Brazilian labor market according to gender, considering the hiring for first job. Therefore, the PME database from 2002 to 2016 is used, with information from the Economically Active Population employed in the age group of 16 to 25 years. The models performed consist of a multivariate probability model with the purpose of analysing the occupational insertion of young people, considering four conditions of activity, two of which are employment (first job and not first job) and two no employment (unemployment and inactivity). And two models of traditional probability, in which the first seeks to analyze the propensity of the young person to occupy a job of better socioeconomic quality, in the current period and in the future. The results indicate that individuals in the first job are less likely to occupy a higher quality position. In addition, the first job tends to affect the young person's future employment, limiting access to better jobs and creating barriers to mobility that results in an improvement in socioeconomic status.Item Comercialização da carne suína em São Paulo: análise de transmissão de preços(Universidade Federal de Goiás, 2017-02-20) Castro, Aline Carvalho de; Silva Neto, Waldemiro Alcântara da; http://lattes.cnpq.br/0903453737945294; Silva Neto, Waldemiro Alcântara da; Monsueto, Sandro Eduardo; Miqueleto, Guilherme JacobThe aim of this work is to study São Paulo pork marketing at levels of producer, wholesale and retail. In order to reach the objective was studied marketing margin, price transmission analysis and asymmetric price transmission test. The marketing margins study showed that retail is the market level that holds most of the sector's margins, averaging 56% over the analyzed period, while the wholesale margin and the producer share are on average 8% and 36% respectively. Regarding the analysis of price transmission, the SVEC model indicated that 1% producer’s prices variation, turn to 0,74% wholesale price’s variation, while 1% wholesale’s prices variation repercussion the retail price in 0,5%. Therefore, prices changes are not completely transmitted to the next stage. Production’s stage is most susceptible to adjustment along the chain, while retail is the most influencer to other stages prices. Result of the asymmetric error correction model (ECM) shows that price transmission farmer to retail is asymmetric. Indicating that increases and decreases in producer prices are not transmitted in the same path by retailers. Such evidence can be explained by high marketing margins at retailer stage, participation in large retail chains that have market power, access to information by being in direct contact with consumers and a high degree organization. Even not producing and not having the product, they are agents whose negotiate through contracts, which incur in less risk.Item Modelos de regressão bivariada: uma aplicação em equações mincerianas de rendimento(Universidade Federal de Goiás, 2018-02-08) Cunha, Danúbia Rodrigues da; Santos, Helton Saulo Bezerra dos; http://lattes.cnpq.br/8716845051198548; Monsueto, Sandro Eduardo; http://lattes.cnpq.br/5484881117429853; Monsueto, Sandro Eduardo; Casari, Priscila; Diaz, Mário Ernesto PiscoyaIn this work, bivariate regression models based on the bivariate normal, t and Birnbaum-Saunders distributions are used to analyze labor market data. In special, the objective is to model the dependent variable of the Mincerian earnings equation separately, namely, the variable hourly earnings (which is obtained by dividing gross monthly earnings by hours worked) is modeled in two parts, earnings and hours worked. The bivariate regression models are used to model these two parts in order to try to capture the correlation between them and the different effects, that is, remuneration or premium for labor effort, and the labor supply or the time that the worker offers to the market. In order to accomplish this, data from the Brazilian National Household Sample Survey (PNAD) for the years 2013, 2014 and 2015 are used. The parameters of the models are estimated using the maximum likelihood method. The results show that the bivariate regression model based on the bivariate t distribution has the best fit for the data, and that the presence of correlation between earnings and hours worked indicates that the bivariate model is more adequate than the univariate model.Item Um modelo de leilão para estimular a competição por outorgas de autorização de pequenas centrais hidrelétricas(Universidade Federal de Goiás, 2020-07-07) Dias, Yuri Ferreira Gomes; Maldonado, Wilfredo Fernando Leiva; http://lattes.cnpq.br/2898705867805713; Scalco, Paulo Roberto; http://lattes.cnpq.br/4259596733099005; Scalco, Paulo Roberto; Maldonado, Wilfredo Fernando Leiva; Holanda, Francisco Bruno de Lima; Bugarin, Maurício SoaresWhen the Federal Constitution established that the hydropower natural potential is a public good, it has enacted a duty for the Federal State: balancing the hydropower deployment aligned with the public interest. In order to have the right to exploit a Small Hydro Powerplants (SHP), a private-owned company shall follow a federal regulation framework, which can be competition for this exploitation. In this case, the Regulator enacts rules which intends to sort the project that better represents a hydropower natural potential. This dissertation proposes an auction model that aims to foster competition among companies. It will be used a sealed-bid first-price auction, where the agent with higher bid will be continued on the process of small hydro powerplant license. Moreover, it will be availed the regulatory result of the current normative will be evaluated and compared with the auction model proposed. As a result, it is possible that auction mechanism reduces the participation of inadequate or adventure companies. This work shows that Regulator type affect the behavior of the companies which will participate in the process. A kind strong of regulator acts proactively, punishing misconduct and delays, also it maybe decreases presence of inadequate or adventure companies.Item Negociações coletivas e indústria 4.0 na EU-15: uma análise de modelos condicionais mistos(Universidade Federal de Goiás, 2023-01-24) Dutra, Matheus Henrique de Araújo; Monsueto, Sandro Eduardo; http://lattes.cnpq.br/5484881117429853; Monsueto, Sandro Eduardo; Bichara, Julimar da Silva; Silva Neto, Waldemiro Alcântara daIndustry 4.0, understood as an innovation process based on cyber-physical systems and the "Internet of Things", is raising the interest of the scientific community for its disruptive potential and its economic and world of work impacts. Thereof, this dissertation aims to analyze the relationship between collective agreements and Industry 4.0 companies in 15 countries of the European Union, based on the level at which they occur and the different industrial relations of different groups of countries, using the concept of Varieties of Capitalism as a theoretical basis. Thus, biprobit-type models are estimated to verify the probability that a bussiness company uses or introduces technologies related to Industry 4.0, based on the level at which such negotiations are presented in a set of explanatory variables from a sample of the European Company Survey. Given the possible presence of unobserved endogeneity and heterogeneity problems, the models are estimated using the estimator of Deb and Trivedi (2006b). The results indicate a positive and significant relationship between the presence of collective agreements, especially that occurring at higher levels, and the probability that the company introduces or already uses I.4.0 technologies. It is also found that collective agreements has a non-linear effect on innovation, and this impact is more relevant in companies with a lower tendency to innovate, belonging to liberal market economies.Item Coabitação e mobilidade domiciliar: evidências para o Brasil(Universidade Federal de Goiás, 2018-12-03) Fernandes, Vinicios Divino Canto; Monteiro, Waleska de Fátima; http://lattes.cnpq.br/6277244705149516; Monteiro, Waleska de Fátima; Cardoso, Larissa Barbosa; Zoghbi, Ana Carolina PereiraData from Brazilian Institute for Geography and Statistics (IBGE) shown that, in year 2002, one quarter of 26-25-year-old Brazilian adults were “Twixters” and kept living with their parents. Ten years after, this rate rose over 30 percent. It is possible, however, that this growth has been motivated due to economic factors. If so, these young may be extending the time spent coresiding with their parents as a strategy to develop a higher reservation wage or more years of education, smoothing their future transition to household independence. This paper proposes to gather evidences about an increase in average coresidence duration in Brazil and to investigate if increases are related to occupational condition and higher demand for human capital. In this regard, we tempt to detect 18-35 years kids who left parental household using data from Brazilian Monthly Employment Survey (PME) from 2002 to 2015. We then regress the ‘exit probability’ against variables such as household characteristics, occupation, years of education and school/college attendance. We find that Brazilian kids have been extending their average spent time on coresidence, mostly male adults aged 26-35. We also find that being unemployed or attending school/college has a negative impact on quitting coresidence status’ probability.Item Distribuição funcional da renda e crescimento econômico: elementos teóricos e uma análise econométrica com dados em painel dinâmico(Universidade Federal de Goiás, 2018-05-16) Freneau, Breno Nahuel; Meyrelles Filho, Sérgio Fornazier; http://lattes.cnpq.br/9533124727129779; Meyrelles Filho, Sérgio Fornazier; Araújo, Ricardo Silva Azevedo; Teixeira, Anderson MutterIn this study, we investigate the relationship between functional income distribution and economic growth by means of a literary survey, formal mathematical modeling and econometric analysis. We begin by reviewing the literature regarding economic distribution and growth theories and identifying different perspectives on this issue. In the context of this discussion, we emphasize the interpretation originally developed by Amit Bhaduri and Stephen Marglin who, by modeling the characteristics of underutilization of productive capacities and involuntary unemployment of the workforce attributed to a monetary economy of production, defined, under a post-Keynesian view, a rigorous and flexible framework of analysis. The Bhaduri-Marglin model predicts positive effects of a higher wage share on consumption as well as positive effects of a higher profit share on investment. Therefore, this framework is capable of explaining wage-led results, which are observed when the consumption effect dominates the investment effect, as well as profit-led results, which are otherwise verified. Upon formally presenting the model and a brief synthesis of the current stage of empirical research in this area of investigation, we propose an econometric study as a means of contributing to the debate. Based on an empirical specification of the Bhaduri-Marglin model for an open economy, we estimate regressions through the use of panel data. We highlight, as central aspects of the contribution proposed here: (1) the inclusion of developing countries in the samples and (2) the application of econometric estimators which are capable of handling potential endogeneity issues. In our empirical study, we apply the Arellano-Bover/Blundell-Bond estimator for dynamic panel data seeking to estimate and analyze the demand regime. Additionally, we employ autoregressive vectors in panel data in order to identify the accumulation regime as well as the demand regime. In our investigation with the Arellano-Bover/Blundell-Bond estimator, we find that most demand regimes estimated are wage-led. Nevertheless, we managed to estimate profit-led demand regimes in one instance related to the average economy. On the other hand, the autorregressive estimator suggests that the average economy has profit-led demand and wage-led accumulation. However, no significant coefficients were detected for the average developing economy while applying this autorregressive structure.Item Uma análise da variação do efeito preço na função de demanda residencial por água para diferentes níveis de consumo(Universidade Federal de Goiás, 2020-04-16) Gomes, Camila Rocha; Monsueto, Sandro Eduardo; http://lattes.cnpq.br/5484881117429853; Silva Neto, Waldemiro Alcântara da; Silva, Adriana Ferreira; Monsueto, Sandro EduardoThis paper aims to estimatea residencial water demand function to the State of Goiás, considering the probable variations of the price effect at the different levels of consumption. The analysis is based on the assumption that users with greater amount consumed are less sensitive to the price variotions. For this purpose, the quantile regression technique is used in a unbalanced panel data of monthly water consumption for each neighborhood served by Saneago. The results show that consumers with a lower volume consumed have a higher price effect than those that demand a larger amount of water, confirmingthe basic hypothesis of the study. Given this variability, it is possible to affirm that only the tarif policy used by Saneago, IBP, does not promote the rational use and is not efficient in the universalization of water supply. Since, by increasing the price, the decrease will occur in those locations that by nature consume less and, usually, for subsistence purposes.Item Programa Nacional do Livro e do Material Didático (PNLD): análise de impacto no período de 2013 – 2020(Universidade Federal de Goiás, 2022-08-24) Gomes, Patrícia Ribeiro Silva; Monteiro, Waleska de Fátima; http://lattes.cnpq.br/6277244705149516; Monteiro, Waleska de Fátima; Monsueto, Sandro Eduardo; Oliveira, Héder Carlos deImpact evaluations are an important instrument for verifying the efficiency and effectiveness of public policies, as well as serving as a measure to verify the correct expenditure of public resources. Given the above, as well as the lack of impact evaluation of the Programa Nacional do Livro e do Material Didático (PNLD), this research aims to promote an unprecedented impact evaluation of the mentioned program, measuring the impact of the PNLD on the dropout rate in Brazil. For this, the Propensity Score Matching was the method used, estimating the average effect of the treatment in the treated - ATT. According to the results obtained, it is possible to observe that the program has the expected effect of reducing the dropout rate in schools that chose to participate in the PNLD, as well as it was also identified that other variables, such as the presence of computer lab and library in the school, when associated with the PNLD, contribute to the reduction in the dropout rate.Item Trajetórias da bovinocultura de corte no Brasil e no estado de Goiás: perspectivas para uma transição sustentável(Universidade Federal de Goiás, 2023-01-18) Gomes, Raquel Oliveira; Silva Neto, Waldemiro Alcântara da; http://lattes.cnpq.br/0903453737945294; Silva Neto, Waldemiro Alcântara da; Silva, Adriana Ferreira; Santos, Ricardo Bruno Nascimento dosThe dissertation is presented in the format of two articles. The first article sought to understand the elements linked to the economic and environmental issue in relation to the characteristics of beef cattle in Brazil and in the state of Goiás, investigating the advances in the main areas highlighted by the literature on the subject, mainly in the issue of animal food quality and in the implementation of integrated systems. The results show that for advances to be achieved in the environmental area, it is necessary that the alternatives presented to the producers consider their economic attractiveness and the operational capacity of their implementation. The second article sought to investigate the effects of demand and supply shocks on the trajectories of beef cattle in Brazil and the state of Goiás, taking into account the environmental aspect. Theoretically, we sought to include greenhouse gas emissions in the econometric modeling of a structural VAR, building on the traditional models initiated by Blanchard and Quah (1989) for Brazilian beef cattle. In the first article, it was possible to identify a set of advances in supplementation and confinement practices that have the potential to reduce greenhouse gases produced by beef cattle. However, the adoption of integrated systems by producers has not yet been shown to be a chosen alternative. In the second article, it was mainly observed that there is a need for planning the growth of the herds at a national level and in the state of Goiás, so that the increase in production in the coming years takes place with productivity gains and a reduction of the environmental impacts of the sector. In general, the components of GHG emissions, which also represent the sector's technological standard, and animal stock had the greatest long-term impacts on the other variables in the sector, reinforcing the need to combine good production practices to increase productivity and reduce the sector's impacts on the environment.Item Diferenças salariais por origem familiar (e cor): uma análise para egressos do ensino superior da UFG(Universidade Federal de Goiás, 2021-03-07) Guimarães, Adriana Moura; Monsueto, Sandro Eduardo; http://lattes.cnpq.br/5484881117429853; Monsueto, Sandro Eduardo; Cardoso, Larissa Barbosa; Ribeiro, Carlos Antônio CostaThis work assesses the impact of family origin on income and wage differentiation by race. As a proxy for family origin, a dummy is used regarding the administrative dependency of the school where the analyzed individuals attended high school. In this context, ex-students from public schools are identified as born in families with unpleasant situations in relation to the others. The sample comprises 10 courses’ graduates from the Federal University of Goiás graduated between 2010 and 2017 and employed in the formal job market. The results show that even controlling factors such as course, institution and contract length, public schools’ students still reach hourly-wages lower than their counterpart. Regarding the issue of color, analyzed here via Oaxaca's decomposition, it is seen that socioeconomic origin is a part significant of the wage differences explained between Blacks and Non-Blacks people.Item Efeitos do desalinhamento da taxa real de câmbio sobre o crescimento econômico, 2001-2014(Universidade Federal de Goiás, 2019-05-23) Kamenach, Kerssia Preda; Missio, Fabrício José; http://lattes.cnpq.br/5047485742216555; Meyrelles Filho, Sérgio Fornazier; http://lattes.cnpq.br/9533124727129779; Meyrelles Filho, Sérgio Fornazier; Missio, Fabrício José; Monsueto, Sandro Eduardo; Lucena, Andréa Freire deThere is an important empirical literature that tries to demonstrate the misalignment of the real rate of exchange effects on economic growth. This literature is divided into at least two main approaches: the first, inspired by the Washington Consensus literature, argues that misalignment of the real exchange rate is prejudicial to economic growth, while the second admits that the undervaluation of the real exchange rate favors product expansion. Rodrik’s studies (2008) are one of main references of this approach. In this context, this dissertation advances in the literature when presenting new econometric evidences for this relation, contemplating a sample of sixty-five developing countries and thirty-one developed countries, observed in the period of 2001 to 2014. A control variables in the growth model is the economic complexity index (ECI), understood as a possible proxy for the level of echnological development, since as the same is more present in the tradable sector goods than in the nontradable goods. In methodological terms, the panel data model with fixed effects was used. The results of the model proposed indicate that the real exchange rate misalignment index coefficient is positive and significant, thus providing empirical support for the hypothesis that the maintenance of an undervalued real exchange rate tends to have a positive impact on economic growth.Item Análise econômica dos indicadores de continuidade da Celg Distribuição(Universidade Federal de Goiás, 2018-07-13) Lauro, Marcos Eduardo de Souza; Monsueto, Sandro Eduardo; http://lattes.cnpq.br/5484881117429853; Silva Neto, Waldemiro Alcantara da; http://lattes.cnpq.br/0903453737945294; Monsueto, Sandro Eduardo; Queiroz, Sabrina Faria de; Queiroz, Antônio Marcos deThe present dissertation aims to evaluate the quality of the service provided by Celg Distribuição, through its continuity indicators, in order to propose improvement actions for the company. The collective indicators of duration and the equivalent frequency of interruptions (DEC and FEC), using a database formed from more than 200 data sets, are evaluated through unpublished methodologies for the theme, spatial analysis and decomposition of Oaxaca, with 200 million of observations related to all interruptions between 2014 and 2016 in the concession area of the distributor. The main results indicate that there is a structural problem with the extrapolation of the regulatory limits of the distributor's indicators, placing it as the worst distributor in Brazil in recent years, a problem that was accentuated by the transfer of control of the State of Goiás to the Union in 2011. This problem presents a heterogeneous problem along the 200,000 km² area of the concession area, whose problem is concentrated in the interior regions of the State of Goiás. In addition, there are significant differences regarding the the Metropolitan Region of Goiânia (REMG) and the interior of the State regarding the durations of the power outages. With the research, four actions are proposed for the company, being they to apply actions of the best electrical assemblies to those where the situation is more critical; to request the regulatory body to redefine regulatory limits; identify the primary cause of the outage; define a specific maintenance policy for the interior of the state of Goiás, a region whose continuity problem is more pronounced than in Goiânia.Item Exportações brasileiras de soja para os principais destinos: uma análise de persistência à choques(Universidade Federal de Goiás, 2022-05-30) Lima, Juan Lucas Alves de; Silva Neto, Waldemiro Alcântara da; http://lattes.cnpq.br/0903453737945294; Silva Neto, Waldemiro Alcântara da; Mansueto, Sandro Eduardo; Silva, Renilson Rodrigues daAgribusiness is one of the most important sectors in Brazil. Almost a third of the Gross Domestic Product comes from the segment. In 2020, the participation of agribusiness corresponded to about 27% of the National GDP. Currently, soy is the main Brazilian agribusiness product, which is why the country stands out for being a leader in world production and export. This form of production is present in the five corners of Brazil, in nineteen states and the Federal District. In addition to strong production, Brazilian soy is present in a huge range of destinations, reaching 116 countries that buy Brazilian soy. Given the significant importance that soybeans have for Brazil, and for one of the main players in the global scenario, the objective of this study is to analyze whether the series of Brazilian exports to the main destinations have a long memory, that is, if there is persistence to shocks exogenous. The method used to identify the presence of long memory of the export series is the calculation of the Hurst exponent, H, and structural break tests. The exponent is found by calculating the R/S statistic and the DFA method, and the LM structural break test. The results showed that the Brazilian soybean export market is consolidated and that the shocks do not affect exports in a persistent and permanent way.
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