Essays on the general equilibrium effects of barriers to trade on economic growth, foreign trade and the location of economic activity in Brazil

This work presents a fully operational interstate CGE model implemented for the Brazilian economy that tries to quantify both the role of barriers to trade on economic growth and foreign trade performance and how the distribution of the economic activity may change as the country opens up to foreign trade. Among the distinctive features embedded in the model, modeling of external scale economies, port efficiency and land-maritime transport costs provides an innovative way of dealing explicitly with theoretical issues related to integrated regional systems. In order to illustrate the role played by the quality of infrastructure and geography on the country‟s foreign and interregional trade performance, a set of simulations is presented where barriers to trade are significantly reduced. The relative importance of trade policy, port efficiency and land-maritime transport costs for the country trade relations and regional growth is then detailed and quantified, considering both short run as well as long run scenarios. A final set of simulations shed some light on the effects of liberal trade policies on regional inequality, where the manufacturing sector in the state of São Paulo, taken as the core of industrial activity in the country, is subjected to different levels of external economies of scale. Short-run core-periphery effects are then traced out suggesting the prevalence of agglomeration forces over diversion forces could rather exacerbate regional inequality as import barriers are removed up to a certain level. Further removals can reverse this balance in favor of diversion forces, implying de-concentration of economic activity. In the long run, factor mobility allows a better characterization of the balance between agglomeration and diversion forces among regions. Regional dispersion effects are then clearly traced-out, suggesting horizontal liberal trade policies to benefit both the poorest regions in the country as well as the state of São Paulo. This long run dispersion pattern, on one hand seems to unravel the fragility of simple theoretical results from recent New Economic Geography models, once they get confronted with more complex spatially heterogeneous (real) systems. On the other hand, it seems to capture the literature‟s main insight: the possible role of horizontal liberal trade policies as diversion forces leading to a more homogeneous pattern of interregional economic growth.

Essays on economic regulation

It is known that stock prices of public listed regulated companies react to price revisions by the regulator, and that the information conveyed by this price reaction might be used by the regulator on the contract design. This paper builds on Laffont and Tirole's (1986) regulation model with observable costs to better understand the effects the inclusion of the stock market can have on the regulator-regulated firm relationship. Our numerical simulations show that the inclusion of the market induce more powerful incentive schemes, with higher cost-reducing efforts, smaller informational rent by the firms and higher overall social welfare. In particular, we find that when the regulator is committed, the presence of short-term investors can make the first-best contract feasible, and that in the non-commitment case the market affects the firm's strategy by making it reveal more information about its cost than it normally would.

Independência do judiciário : mensurando o viés político das cortes brasileiras

O grau de influência política ao qual o judiciário está submetido tem profusas implicações sobre desenvolvimento econômico. Para que o compromisso de não expropriação pelo executivo seja crível, é necessário que o judiciário seja livre para intermediar imparcialmente as disputas entre o Estado e seus cidadãos. Se há muita influência política no judiciário, a credibilidade de tal comprometimento está maculada, o que desencoraja investimentos privados, assim prejudicando o crescimento econômico. No Brasil, uma peculiaridade institucional permite que seja feita uma comparação inédita na literatura. Como há duas cortes, o Supremo Tribunal Federal (STF) e o Superior Tribunal de Justiça (STJ), que versam sobre matérias similares e tem distintas restrições à indicação de seus membros, é possível comparar o grau de influência política ao qual elas estão submetidas. Desta forma, propõe-se testar: 1- se há efeito da indicação política nas decisões dos ministros das duas cortes; 2- se há diferenças do grau de influência política de acordo com as restrições à indicação presidencial de cada corte; 3- se os ministros de ambas as cortes fazem uso estratégico de seus cargos, ou seja, ativamente beneficia o partido que o indicou. Dos efeitos testados, encontra-se evidências do segundo e, parcialmente, do terceiro.

Estratégia e prática de responsabilidade social corporativa : um estudo de caso no setor químico

Até a década de 1980 os temas sociais das grandes empresas não eram foco de interesse dos debates da área de estratégia. A globalização acirrou a concorrência e a competitividade entre as empresas. Todavia, existem aquelas que mesmo diante de um mercado mais competitivo não abrem mão do investimento na área social, seja por filosofia ou marketing. Essas empresas buscam contribuir positivamente para a melhoria do meio ambiente e com aqueles que estão envolvidos com seu negócio, como, por exemplo, funcionários, acionistas, concorrentes, entidades não governamentais e a sociedade de um modo geral. O discurso dessas empresas é a preservação do meio ambiente ao lado da emancipação social. Esta pesquisa se utilizou de uma abordagem crítica (foco social) em contraste com uma abordagem econômica (mainstream), para compreender como são elaboradas as estratégias de RSC através da voz dos atores envolvidos – “os praticantes de RSC” – observando se há predominância dos conteúdos críticos e/ou mainstream na prática da estratégia de responsabilidade social da empresa. Para que fosse possível atingir os objetivos inicialmente delimitados foi elaborado um estudo de caso único em uma empresa que declara ter em seu core business a prática de estratégia de responsabilidade social corporativa. A partir da revisão de literatura e através de dados coletados com gerentes internos, ex-funcionários, ONGs, entre outros, buscou-se compreender de que forma esta empresa lida com a dicotomia social e econômica na estratégia de responsabilidade social. Verificou-se que pode haver oportunidades para gerar valor tanto de ordem econômica como social, para os acionistas e stakeholders, nas quais a abordagem econômica e a abordagem social (utilizando os princípios do Critical Management Studies) podem conviver de forma interdependente sem se contrapor. Por outro lado, há que se ter cuidado para que a empresa não faça auto-regulação da estratégia social, legislando em causa própria. A RSC está presente no planejamento estratégico da empresa. O principal valor que estas estratégias têm dentro e fora da empresa é o reconhecimento da marca ligada a um forte envolvimento com a estratégia social e com o meio ambiente.

Agreements and disputes over non-tariff measures

In trade agreements, governments can design remedies to ensure compliance (property rule) or to compensate victims (liability rule). This paper describes an economic framework to explain the pattern of remedies over non-tariff restrictions—particularly domestic subsidies and nonviolation complaints subject to liability rules. The key determinants of the contract form for any individual measure are the expected joint surplus from an agreement and the expected loss to the constrained government. The loss is higher for domestic subsidies and nonviolations because these are the policies most likely to correct domestic distortions. Governments choose property rules when expected gains from compliance are sufficiently high and expected losses to the constrained country are sufficiently low. Liability rules are preferable when dispute costs are relatively high, because inefficiencies in the compensation process reduce the number of socially inefficient disputes filed.

Essays on economic growth

A fundamental question in development economics is why some economies are rich and others poor. To illustrate the income per capita gap across economies consider that the average gross domestic product (GDP) per capita of the richest 10 percent of economies in the year 2010 was a factor of 40-fold that of the poorest 10 percent of economies. In other words, the average person in a rich economy produces in just over 9 days what the average person in a poor economy produces in an entire year. What are the factors that can explain this difference in standard of living across the world today? With this in view, this dissertation is a conjunction of three essays on the economic growth field which we seek a possible responses to this question. The first essay investigates the existence of resource misallocation in the Brazilian manufacturing sector and measures possible distortions in it. Using a similar method of measurement to the one developed by Hsieh and Klenow (2009) and firm-level data for 1996-2011 we find evidence of misallocation in the manufacturing sector during the observed period. Moreover, our results show that misallocation has been growing since 2005, and it presents a non-smooth dynamic. Significantly, we find that the Brazilian manufacturing sector operates at about 50% of its efficient product. With this, if capital and labor were optimally reallocated between firms and sectors we would obtain an aggregate output growth of approximately 110-180% depending on the mode in which the capital share is measured. We also find that the economic crisis did not have a substantial effect on the total productivity factor or on the sector's misallocation. However, small firms in particular seem to be strongly affected in a global crisis. Furthermore, the effects described would be attenuated if we consider linkages and complementarity effects among sectors. Despite Brazil's well-known high tax burden, there is not evidence that this is the main source of resource misallocation. Moreover, there is a distinct pattern of structural change between the manufacturing sectors in industrialized countries and those in developing countries. Therefore, the second essay demonstrate that this pattern differs because there are some factors that distort the relative prices and also affect the output productivity. For this, we present a multi-sector model of economic growth, where distortions affect the relative prices and the allocation of inputs. This phenomenon imply that change of the production structure or perpetuation of the harmful structures to the growth rate of aggregate output. We also demonstrate that in an environment with majority decision, this distortion can be enhanced and depends on the initial distribution of firms. Furthermore, distortions in relative prices would lead to increases in the degree of misallocation of resources, and that imply that there are distinct patterns of structural changes between economies. Finally, the calibrated results of the framework developed here converge with the structural change observed in the firm-level data of the Brazilian manufacturing sector. Thereafter, using a cross-industry cross-country approach, the third essay investigates the existence of an optimal level of competition to enhance economic growth. With that in mind, we try to show that this optimal level is different from industrialized and under development economies due to the technology frontier distance, the terms of trade, and each economy's idiosyncratic characteristics. Therefore, the difference in competition industry-country level is a channel to explain the output for worker gap between countries. The theoretical and empirical results imply the existence of an inverted-U relationship between competition and growth: starting for an initially low level of competition, higher competition stimulates innovation and output growth; starting from a high initial level of competition, higher competition has a negative effect on innovation and output growth. Given on average industries in industrialized economies present higher competition level. With that if we control for the terms of trade and the industry-country fixed effect, if the industries of the developing economy operated under the same competition levels as of the industrialized ones, there is a potential increase of output of 0.2-1.0% per year. This effect on the output growth rate depends on the competition measurement used.

Empresas como agentes de benefício para o mundo: reflexão sobre visões de futuro no Brasil

O objetivo desta pesquisa consistiu em explorar os fatores comuns das visões de futuro de três segmentos da comunidade paulistana (executivos, empreendedores sociais e pensadores), especialmente no que diz respeito às possíveis alianças cooperativas entre o mundo dos negócios e a sociedade como um todo, como também as estratégias utilizadas para concretizá-las. Indagamos se, com suas experiências de vida, os sujeitos entrevistados protagonizavam suas visões de futuro; quais eram os aspectos em comum dessas visões referentes ao futuro e ao futuro dos negócios; as estratégias utilizadas para concretizar essas visões comuns, percebidas como positivas, e de que maneira podiam contribuir para o desenvolvimento de uma relação cooperativa entre os negócios e a sociedade. Utilizamos 30 entrevistas (10 em cada segmento), em amostra acidental, gravadas e, posteriormente, submetidas a uma análise segundo o referencial da Psicologia Social de Enrique Pichon-Rivière, incluindo alguns dos indicadores do processo interacional (cooperação, comunicação e telecomunicação) e da reação dos entrevistados e entrevistadores com relação aos conteúdos aplicados (transferência e contratransferência). Baseamo-nos no protocolo de Investigação Apreciativa do projeto "Business as an Agent of World Benefit" da Weatherhead School of Management e conceitos convergentes com o referencial adotado no que se refere ao interjogo entre o homem e o mundo, o protagonismo, o contar histórias, o projeto como planejamento de futuro e a criação de novas metáforas. Com relação ao futuro imaginado, encontramos como resultado unânime a preocupação com o meio ambiente, a mudança de valores (com a revisitação da noção de bem-estar, as “mortes subjetivas” por preconceito, o acolhimento expandido aos profissionais da saúde e a saúde como valor); a interconexão (presente no mundo contábil, nos modelos econômicos equitativos, na visão do administrador como estadista, na integração entre o “dentro e fora do negócio”, na consciência da riqueza como medida global e não individual, na ética, no voluntariado por consciência, no cuidado com o ambiente, consigo mesmo, com o outro e com a vida e a morte); coerência, vínculo e escuta (com foco na qualidade das relações e não na tecnologia, no honrar o próximo, no compartilhamento de experiências, na mão dupla entre negócios e comunidade, no bom trato para com as crianças e adultos), inclusão/exclusão (com a criação de espaços públicos intencionalmente inclusivos e a real inclusão dos excluídos na empresa); a educação (através do raciocínio que lide com a linearidade vigente e estimule pensar na complexidade, do reconhecimento de aspectos saudáveis e construtivos no cotidiano, e da formação que abrange gerentes, empreendedores e comunidade, incluindo conhecimento, ética e gratidão); interioridade (alma do negócio, intuição, transcendência como diferencial influindo em uma nova percepção de lucro, sacralidade da vida, encontro consigo próprio); lucro (revisão desse conceito com foco na vida, no bem-estar, no enraizamento das pessoas); consumo/consumidor (com relação à mudança na forma de analisar investimentos inteligentes, uma nova visão de pobreza); longo prazo (ligado à sustentabilidade, à autovalorização das pessoas e à educação dos funcionários). Há muitas estratégias atuantes nos diferentes segmentos, as pensadas são: a intencionalidade de inclusão em espaços públicos por diversos agentes, a revisão do conceito de bem-estar, os benefícios compartilhados, a inclusão mais precoce do jovem no mundo dos negócios e não como forma de exploração, o incentivo às atitudes de liderança nos jovens para o novo mundo e o longo prazo, como tema a ser mais aprofundado. Quanto à relação entre negócios e sociedade parece não haver clareza entre os segmentos quanto ao papel desempenhado pelas empresas, pelas ONGs e pelas comunidades. Surgem pontos como a necessidade da expansão de idéias inovadoras por meio de instituições sem fins lucrativos, do fortalecimento da sociedade civil, de um novo conceito de organização social, das ONGs não serem mais necessárias, das comunidades solidárias como instituições de direito e da ampliação do sentido da responsabilidade social estendido ao ecossistema.

On the effects of non-tariff measures on Brazilian exports

This article proposes an alternative methodology for estimating the effects of non-tariff measures on trade flows, based on the recent literature on gravity models. A two-stage Heckman selection model is applied to the case of Brazilian exports, where the second stage gravity equation is theoretically grounded on the seminal Melitz model of heterogeneous firms. This extended gravity equation highlights the role played by zero trade flows as well as firm heterogeneity in explaining bilateral trade among countries, two factors usually omitted in traditional gravity specifications found in previous literature. Last, it also proposes a economic rationale for the effects of NTM on trade flows, helping to shed some light on its main operating channels under a rather simple Cournot’s duopolistic competition framework.

On the effects of non tariff measures on Brazilian exports

This article proposes an alternative methodology for estimating the effects of non-tariff measures on trade flows, based on the recent literature on gravity models. A two-stage Heckman selection model is applied to the case of Brazilian exports, where the second stage gravity equation is theoretically grounded on the seminal Melitz model of heterogeneous firms. This extended gravity equation highlights the role played by zero trade flows as well as firm heterogeneity in explaining bilateral trade among countries, two factors usually omitted in traditional gravity specifications found in previous literature. Last, it also proposes a economic rationale for the effects of NTM on trade flows, helping to shed some light on its main operating channels under a rather simple Cournot’s duopolistic competition framework

Peat humic substances enriched with nutrients for agricultural applications: Competition between nutrients and non-essential metals present in tropical soils

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Chronic Diseases: Chronic Diseases and Development 2 Health, agricultural, and economic effects of adoption of healthy diet recommendations

Transition to diets that are high in saturated fat and sugar has caused a global public health concern as the pattern of food consumption is a mayor modifiable risk factor for chronic non-communicable diseases Although agri food systems are intimately associated with this transition, agriculture and health sectors are largely disconnected in their priorities policy, and analysis with neither side considering the complex inter relation between agri trade patterns of food consumption health, and development We show the importance of connection of these perspectives through estimation of the effect of adopting a healthy diet on population health, agricultural production trade the economy and livelihoods, with a computable general equilibrium approach on the basis of case studies from the UK and Brazil we suggest that benefits of a healthy diet policy will vary substantially between different populations, not only because of population dietary intake but also because of agricultural production trade and other economic factors

ECONOMIC ANALYSIS of AMAZON RIVER PRAWN FARMING TO THE MARKETS FOR LIVE BAIT and JUVENILES IN PANTANAL, BRAZIL

The implementation of a hypothetical aquaculture facility with hatchery, nursery and grow-out earthen ponds for raising the Amazon River Prawn Macrobrachium amazonicum in the Pantanal was considered. Eight larviculture cycles per year were projected: four to produce post-larvae for stocking in grow-out bait ponds, and four to stock nursery tanks to sell juveniles as seed to grow-out farms, which produce prawns for human consumption. Annual production would be 146,880 dozen bait prawns and 2,938 thousand juveniles. The assumed sale prices were US$ 1.38 per dozen baits and US$ 15.39 per thousand juveniles. The net present value was US$ 555,890.79, internal rate of return was 48% per year, payback period was 2.4 years and benefit-cost ratio was 3.90. The breakeven price to cover total costs per dozen baits was US$ 0.70 and per thousand juveniles was US$ 17.00, indicating that the selling price assumed for juveniles in base scenario is not realistic. Net return was US$ 84,773.80. The results indicate that this activity would be a lucrative and attractive investment in the Pantanal.

An efficient Hopfield network to solve economic dispatch problems with transmission system representation

Economic dispatch (ED) problems have recently been solved by artificial neural network approaches. Systems based on artificial neural networks have high computational rates due to the use of a massive number of simple processing elements and the high degree of connectivity between these elements. The ability of neural networks to realize some complex non-linear function makes them attractive for system optimization. All ED models solved by neural approaches described in the literature fail to represent the transmission system. Therefore, such procedures may calculate dispatch policies, which do not take into account important active power constraints. Another drawback pointed out in the literature is that some of the neural approaches fail to converge efficiently toward feasible equilibrium points. A modified Hopfield approach designed to solve ED problems with transmission system representation is presented in this paper. The transmission system is represented through linear load flow equations and constraints on active power flows. The internal parameters of such modified Hopfield networks are computed using the valid-subspace technique. These parameters guarantee the network convergence to feasible equilibrium points, which represent the solution for the ED problem. Simulation results and a sensitivity analysis involving IEEE 14-bus test system are presented to illustrate efficiency of the proposed approach. (C) 2004 Elsevier Ltd. All rights reserved.

Economic design of (X)over-bar and R charts under Weibull shock models

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Design and management optimization of trickle irrigation systems using non-linear programming

A non-linear model is presented which optimizes the lay-out, as well as the design and management of trickle irrigation systems, to achieve maximum net benefit. The model consists of an objective function that maximizes profit at the farm level, subject to appropriate geometric and hydraulic constraints. It can be applied to rectangular shaped fields, with uniform or zero slope. The software used is the Gams-Minos package. The basic inputs are the crop-water-production function, the cost function and cost of system components, and design variables. The main outputs are the annual net benefit and pipe diameters and lengths. To illustrate the capability of the model, a sensitivity analysis of the annual net benefit for a citrus field is evaluated with respect to irrigated area, ground slope, micro-sprinkler discharge and shape of the field. The sensitivity analysis suggests that the greatest benefit is obtained with the smallest microsprinkler discharge, the greatest area, a square field and zero ground slope. The costs of the investment and energy are the components of the objective function that had the greatest effect in the 120 situations evaluated. (C) 1996 Academic Press Limited