The unequal distribution of gains from technology between favorable and unfavorable rice environments in Asia can widen if future transgenic rice varieties cannot be adopted in less favored regions. This study investigates the potential economic impacts of three transgenic rice technologies: stemborer resistance, for favorable irrigated environments; drought resistance, for unfavorable non-irrigated environments; and herbicide resistance, which can potentially benefit any of the environments but can only be adopted in areas under direct seeding. Specifying individual technologies contributes to a better comparative assessment of impacts from transgenic rice. The simulation uses a modified version of the Global Trade Analysis Project (GTAP) model with several innovative features: the database and code represent the distinct rice environments for both paddy and seed sectors; monopoly power is included in the model as a markup tax instrument when private firms sell herbicide resistant rice seed; and private rents can be transferred between regions and change income computation in the model. Equivalent variation measures obtained from simulations are similar at 2.3 billion, 2.5 billion and 2.2 billion dollars for stemborer, drought and herbicide resistance respectively. All technologies increase global rice output and reduce rice prices, while keeping labor wages at stable levels. Private provision of herbicide resistance rice generates benefits of 2.05 billion dollars while creating 122 million dollars in private profits. Although profits increase with higher markups, there are still large social benefits to realize from herbicide resistance technology. However, producers' response to reduced profitability is not accounted for and adoption is an exogenous variable in the model. The results suggest that the large expected impact from drought resistant rice supports public research investment on this technology. Joint efforts between public and private research sectors can increase the probability of success, and mechanisms to promote private research for unfavorable environments should be developed. Public policies should also remove obstacles that prevent firms from undertaking joint research with the public sector. Outcomes from public research, such as improved germplasm and spread of direct seeding techniques, also benefit the private sector and should act as an incentive for firms to build strategic alliances. / Ph. D.

Abstract This research examines the relationship between the product and labor market in a situation when there is imperfect competition in the product market. The subjects studied are the existence of the mark-up factors implied by imperfect competition and their impacts on labor demand. The dependency of labor demand on the product demand is also examined. In the research the existence of the mark-up factors in Finnish companies can be verified. In addition, according to results, the mark-up factors have negative impact on labor demand. Product demand has a significant positive effect on labor demand. However, the transmission mechanism from the product demand changes to labor demand remains to some extent unsolved.

Submitted by Felipe Shalders (fshalders@fgvmail.br) on 2012-06-27T14:49:51Z No. of bitstreams: 1 tese.pdf: 364887 bytes, checksum: 1cfa0c6bf34299e43d33fa91d263b739 (MD5) / Approved for entry into archive by Marcia Bacha (marcia.bacha@fgv.br) on 2012-08-16T13:50:44Z (GMT) No. of bitstreams: 1 tese.pdf: 364887 bytes, checksum: 1cfa0c6bf34299e43d33fa91d263b739 (MD5) / Made available in DSpace on 2012-08-16T13:51:09Z (GMT). No. of bitstreams: 1 tese.pdf: 364887 bytes, checksum: 1cfa0c6bf34299e43d33fa91d263b739 (MD5) Previous issue date: 2012-05-16 / In oligopoly theories based on Nash Equilibrium and related concepts, free entry is associated with the coexistence of more than one rm. On the other hand, in the monopoly literature some reasons are identi ed as possible explanations to the permanence of a single pro table rm in the market, but usually do not rely on Nash Equilibrium concept. Here, we provide examples in a game-theoretical approach where randomization between monopoly prices is a new possible explanation for a pro table monopoly with free entry. We construct models where, due to the multidimensionality of goods and heterogeneity of consumers, more than one monopoly price arise, allowing randomization in equilibrium. / Em teorias de oligop olio baseadas em Equil brios de Nash e conceitos derivados, livre entrada e associada a coexist^encia de uma ou mais rmas. Por outro lado, teorias de monop olio que tentam explicar a aus^encia de concorrentes em ambientes com livre entrada n~ao se baseiam em equil brios de Teoria dos Jogos. Neste trabalho, usando um arcabou co de Teoria dos Jogos, apresento exemplos em que randomiza c~ao entre pre cos de monop olio e uma nova poss vel explica c~ao para a exist^encia de um monopolista com lucros positivos quando h a livre entrada. S~ao constru dos modelos onde, devido a multidimensionalidade dos bens e heterogeneidade dos consumidores, existe mais de um pre co de monop olio, possibilitando randomiza c~ao em equil brio.

Professional sporting events draw staggering crowds to stadia on a yearly basis. This combined, with the prosocial psychological effects of attending professional games and the cultural meaning of stadia to a community, provide excellent opportunities for municipalities to use their stadia in a movement towards global socio-ecological sustainability. While these opportunities are available, the industry is not well established to realize their potential. Our research, through application of the framework for strategic sustainable development (FSSD), offers measures to facilitate such a move. In application of the framework, however, a key threat of professional team monopoly power was identified, putting into question the perpetuation of public ownership over facilities with professional teams as tenants. If a solution is to be reached within this model, a multi-stakeholder approach is endorsed, where reduction of team monopoly power is conceded for the long-term benefits to municipalities. / <p>Cristhian G. +46 733 -572918</p>

Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-09-27T13:40:49Z No. of bitstreams: 1 carolinamoraessarmentodeassis.pdf: 1036311 bytes, checksum: 483fffca9ef9bc9e0b5c555f68e7b621 (MD5) / Approved for entry into archive by Diamantino Mayra (mayra.diamantino@ufjf.edu.br) on 2016-09-27T15:15:20Z (GMT) No. of bitstreams: 1 carolinamoraessarmentodeassis.pdf: 1036311 bytes, checksum: 483fffca9ef9bc9e0b5c555f68e7b621 (MD5) / Made available in DSpace on 2016-09-27T15:15:20Z (GMT). No. of bitstreams: 1 carolinamoraessarmentodeassis.pdf: 1036311 bytes, checksum: 483fffca9ef9bc9e0b5c555f68e7b621 (MD5) Previous issue date: 2016-06-30 / FAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais / Esta dissertação teve por objetivo investigar os efeitos da participação de mercado das firmas sobre os salários que pagam por ocupação, para os setores extrativista e de transformação da economia brasileira, no período de 2007 a 2013. A base de dados utilizada foi um painel de microdados conectáveis ocupação-firma, construída a partir de dados do Relatório Anual de Informações Sociais Identificada (RAIS) e da Pesquisa Industrial Anual (PIA-Empresa). O controle das heterogeneidades não-observadas da firma e dos choques ocupacionais foi realizado em duas etapas: a primeira etapa consistiu em eliminar os efeitos não observados das firmas; com as variáveis em diferença, a segunda etapa consistiu em estimar um modelo de efeitos-fixos, por meio do qual eliminou-se os choques ocupacionais. Os resultados apontam haver relação positiva e significativa entre a participação de mercado das firmas e os salários que pagam por ocupação. Os coeficientes encontrados, contudo, são inferiores àqueles reportados para os países desenvolvidos, indicando este fator como menos relevante para os diferenciais salariais no país. Ademais, o Lester range foi de 9% após o controle para os efeitos não observados, valor aquém daqueles reportados na literatura internacional. A agregação dos dados por ocupação-firma, considerando a maior desagregação disponível para a ocupação, bem como a especificação de um modelo de efeitos-fixos capaz de controlar dois tipos de heterogeneidade não observada, contribuiu para a literatura ao apresentar uma nova possibilidade de estimação dos modelos que tratam esse tema, posto que estimam um modelo sem incorrer em prejuízos amostrais. Ademais, a existência de uma escassa literatura acerca desse tema para o Brasil, como também para os países em desenvolvimento, reforça a relevância deste estudo. / This work aimed to investigate the effects of firm’s product market market-power on occupational wages on Brazilian manufacturing firms, between 2007 and 2013. This study used detailed occupation and firm-level matched data, based on our merging of two different data sets: the Annual Report of Social Information (RAIS) and the Annual Industrial Survey (PIA-Enterprise). The control of unobserved heterogeneity of the firms and the occupations was performed in two stages: the first stage eliminates unobserved effects of firms; with the variables in difference, in a second stage, one could estimate a model of fixed effects, by which the occupational shock is eliminated. The results shows a positive and significant relationship between the firm’s market-share and occupational wages. The coefficients found, however, are lower than those reported for developed countries. Moreover, after controlling for both fixed effects, Lester Range was 9%, value below those reported in the literature. The aggregation of data by cell of occupation-firm, considering the further breakdown available for occupation, as well as the specification of a fixed effects model able to control two types of unobserved heterogeneity, contributed to the literature by presenting a new possibility for the estimation of models that address this issue, since they estimate a model without incurring sample losses. Moreover, the existence of a limited literature on this subject for Brazil, and also for developing countries, reinforces the relevance of this study.