Orientador: Fernando Antonio Lourenço / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Filosofia e Ciencias Humanas / Made available in DSpace on 2018-08-10T21:36:06Z (GMT). No. of bitstreams: 1 Pedroza_ManoeladaSilva_D.pdf: 4464292 bytes, checksum: 83b00526957827012715f6a8998fa5b4 (MD5) Previous issue date: 2008 / Resumo: O objetivo dessa tese é conhecer os mecanismos que determinavam a dinâmica agrária em uma sociedade rural tradicional. A partir da análise de registros paroquiais (casamentos, batismos e terras), processos judiciais e inventários, percebemos que essa engrenagem passava longe de uma racionalidade econômica moderna, e mais perto de um sistema denominado, por alguns autores, de 'economia moral¿. Sendo assim, situamos as condições de formação dessa economia moral, e buscamos entender como ela se sustentou e geriu com relativa autonomia a circulação de terras, até bastante avançado o século XIX. Para entender sua formação, são analisadas as relações dinâmicas entre o contexto sócio-econômico, as estratégias familiares e a produção agrícola no século XVIII, com ênfase nos senhores de engenhos de açúcar do Recôncavo da Guanabara. Em seguida, são caracterizados os elementos básicos desse sistema normativo: a centralidade do senhor de engenho, a herança preferencial, a vontade do testador, os intercâmbios estratégicos entre parentela consangüínea, matrimonial e ritual, a hierarquia dos direitos de uso e os compromissos corporativos assumidos pela 'casa' em relação ao direito de subsistência de seus membros. Verificamos que a efetividade dessa moral local conferia à estrutura agrária da região características originais e bastante estáveis no tempo, tornando-a capaz de adaptar-se ou superar parte das dificuldades impostas tanto pela conjuntura econômica quanto por suas próprias contradições. Analisamos a funcionalidade das fazendas pro indiviso, dos sítios e da hierarquia de acesso às terras livres. Verificamos também o funcionamento da moral tradicional e suas respostas nos conflitos sobre a derrubada de matos e o acesso a terras devolutas. Discutimos as variantes senhoriais impostas pela crise econômica e pela fragmentação das terras pela herança. Depois, analisamos os impactos do novo mercado de terras e dos interesses econômicos 'de fora¿ sobre essa moral tradicional. Por fim, se discutem os elementos geradores da ruptura desse sistema, não como processos alheios a vontade dos homens, mas como manipulações estratégicas nos direitos costumeiros por parte de agentes locais / Abstract: This dissertation aims to investigate the mechanisms which determined the agrarian dynamics in a traditional rural society. Based on parish records (weddings, baptisms and lands), lawsuits and inventories, it was observed that this organization was far from being ruled by a modern economic rationality; instead, it approached a system named ¿moral economy¿ by some authors. The study seeks to establish the conditions whereby this moral economy was formed, in an attempt to understand how it supported itself and managed the circulation of lands with relative autonomy throughout the 19th century. In order to understand its formation, special emphasis was placed on the sugar mills masters from the Recôncavo da Guanabara. Subsequently, a characterization of the basic elements of this normative system is provided: the central role played by the sugar mill master, the preferential inheritance, the willingness of the testator, the strategic exchanges among consanguineous, matrimonial and fictitious relatives, the hierarchy in the usage right, and the corporative commitments made by the ¿household¿, as far as the rights to subsistence of its members were concerned. It was observed that the effectiveness of this local moral rendered the agrarian structure of the region some original features, which were quite stable throughout time, making it possible for it to adjust to or overcome part of the difficulties imposed by both the economic situation and its own contradictions. An analysis of the functionality of the pro indiviso farms, the ranches and the hierarchy in the access to free lands was carried out. In addition, the functioning of the traditional moral and its responses to the conflicts over the clearing of thickets, the access to returned lands and invasion was verified. The image of the tenants led to an investigation of the reason why they had such an inferior social position in that moral hierarchy. The study also provides an analysis of the variants regarding the masters, which were imposed by the economic crisis and the fragmentation of the lands through inheritance, as well as an examination of the impact caused by the new land market and the ¿external¿ economic interests over this traditional moral. Finally, the elements responsible for this rupture are discussed, not as processes alien to the will of men, but rather as strategic manipulations of the customary rights by local agents / Doutorado / Processos e Identidades no Mundo Rural / Doutor em Ciências Sociais

Uma das abordagens mais utilizadas atualmente para se estudar o metabolismo e a transdução de sinais hormonais é o uso de mutantes com alterações nos genes que codificam os principais componentes desses processos. A cultivar miniatura de tomateiro (Lycopersicon esculentum) denominada Micro-Tom (MT) possui porte reduzido (8 cm) e ciclo de apenas 75 dias, constituindo-se em um excelente modelo para uma abordagem genética de estudos fisiológicos. Mutantes com alterações no balanço auxina/citocinina, ou na capacidade de resposta a esse balanço, podem ser utilizados para desvendar o papel da interação entre esses hormônios no controle do desenvolvimento, inclusive no que se refere à capacidade de regeneração in vitro. O presente trabalho teve como objetivo criar um modelo para se estudar o papel do balanço auxina/citocinina endógeno na competência para regeneração in vitro, através da incorporação das mutações dgt, brt, gf, lutescent, ls e bu, as quais sugerem alterações no metabolismo e/ou sensibilidade hormonal, na cultivar MT. Essas mutações foram caracterizadas quanto à sensibilidade à auxina e citocinina através da obtenção de curvas de dose-resposta, utilizando-se diferentes concentrações de AIA (0; 0.1; 1; 10 e 100 µM) e TDZ (0; 0.01; 0.1; 1; 10 e 100 µM), em segmentos de pecíolo e plântulas germinadas em gerbox, respectivamente. As mutações caracterizadas para auxina e citocinina, bem como o controle MT, foram testadas in vitro, quanto à sua capacidade de regeneração, em meio de cultura MS, suplementado com 5µM de BAP (explantes cotiledonares e segmentos de hipocótilo) e 4,5 µM de Zeatina (segmentos de raiz). Os mutantes lutescent, gf e bu, apesar de possuírem fenótipo bastante interessante, não parecem ser relacionados à sensibilidade à auxina e citocinina, bem como ao etileno. Já os mutantes dgt e brt apresentaram respostas típicas de mutantes com pouca sensibilidade à auxina e citocinina, respectivamente. Dessa forma, a resposta ao balanço AIA/Cks é alterado nesses mutantes, afetando o processo de regeneração. Nos segmentos de hipocótilo, houve formação de calos em todos os explantes, entretanto, poucos explantes formaram gemas adventícias, sendo que o mutante dgt foi o que apresentou menor taxa de regeneração. Nos explantes cotiledonares, a taxa de regeneração foi menor ainda no MT e no mutante dgt, e ausente no mutante brt. Não houve regeneração em nenhum dos genótipos em segmentos de raiz. Esses resultados sugerem que, embora a competência para regeneração in vitro possa ser dependente do balanço AIA/Cks, ou da resposta a esse balanço, existem interações mais complexas entre esses hormônios e seus efeitos na regeneração. A exemplo disso, era de se esperar uma maior formação de gemas caulinares em dgt, já que sua capacidade de resposta ao balanço está voltada para Cks. Um estudo mais aprofundado para a correta interpretação dessa interação deve levar em conta que a sensibilidade à auxina é necessária também no processo de desdiferenciação. Além disso, auxinas e citocininas não só atuam na diferenciação, mas também podem interferir na regeneração, independente do balanço AIA/Cks, já que são necessárias para a expansão e divisão celular. / To date, one of approaches more used to study the metabolism and transduction of hormone signals are the mutants with alterations in genes which encode the principal components of this process. The miniature cultivar of tomato (Lycopersicon esculentum) named Micro-Tom (MT) possesses reduced size (8 cm) and a life cycle of just 75 days, constituting an excellent model for a genetic approach of physiology studies. Mutants with altered auxin/cytokinin ratio, or in the response capacity to this ratio, can be used to clear up the role of interactions between these hormones in the control of development, including those concerning the in vitro regeneration capacity. The current work aimed to produce a model to study the role of endogenous auxin/cytokinins ratio in the competence for in vitro regeneration, through incorporation of the dgt, brt, gf, lutescent, ls and bu mutations, which concern altered hormone metabolism and/or sensibility, in the MT cultivar. These mutations were tested for the hypothesis of being related to auxin and cytokinin sensibility by means of dose-response curves, using different concentrations of IAA (0; 0.1; 1; 10 e 100 µM) and TDZ (0; 0.01; 0.1; 1; 10 e 100 µM), in petiole segments and gerbox-germinated seedlings, respectively. The mutations confirmed to be auxin and cytokinin related, as well the MT control, were tested in vitro for regeneration capacity, in MS culture media, with either 5µM de BAP (cotyledon explants and hypocotyl segments) or 4,5 µM Zeatin (root segments). The luescent, gf and bu mutants, despite showing an interesting phenotype, do not seem to be related to auxin and cytokinin sensibility, as well as to ethylene. However, the dgt and brt mutants showed typical responses of reduced auxin and cytokinin sensibility, respectively. Thus, the response to auxin/cytokinin is altered in these mutants, affecting the regeneration process. Calli were observed in all hypocotyl segments, however few explants formed adventitious buds, with the dgt mutant presenting the least regeneration ratio. In the cotyledon explants, the regeneration ratio was even less than in MT and in dgt, and absent in the brt mutant. There was no regeneration whatsoever from root segments in any genotype. These results suggest that, although the competence for in vitro regeneration might be dependent on the IAA/Cks ratio, or the response to this ratio, interactions far more complex exist between these hormones and their effects on regeneration. For instance, a greater adventitious buds formation was expected in dgt, because its response ability is biased toward Cks. A deeper study for the correct interpretation of these data should consider that the sensibility to auxin is also necessary in the process of undifferentiation. Besides, both auxins and cytokinins have roles not only in differentiation, but also can interfere with regeneration independent of the IAA/Cks ratio, as they are required for cell division and expansion.

My thesis examines food allocation and nutritional outcomes in a sample of 152 individuals in thirty-two households of sugarcane workers in the municipality of Gameleira, Northeast Brazil. Anthropometric data show that undernutrition and overnutrition coexist in the study population, and often within households – a consequence of the changes in diet and physical activity linked to the nutrition transition. Food allocation was examined using an indicator of the frequency of consumption of high status foods - non-staple foods which are considered more desirable than staples because they add variety and taste to an otherwise monotonous diet. I created an intra-household index of food allocation in order to observe each individual's consumption in relation to the average in his or her household at two seasonal points of the year. The sample was split into two groups, a group of more affluent households in which high status foods were eaten on the harvest and non-harvest dietary recalls, and a group of less affluent households in which no-one ate high status foods on the non-harvest recall. I found gender biases in the allocation of food in favour of men relative to women, and girls relative to boys, in the higher income group, but no gender biases in the group of less affluent households. In relation to age, I found biases in favour of children relative to adults in less affluent households, but not during seasonal shortage in the higher income households. The biases were greater in households with higher incomes, but lower in households in which women controlled some household income relative to households in which men controlled all income. I considered whether discriminatory behaviour underpins these biases, based largely on periods of observation in a sub-sample of six households, and concluded that food distribution operates as a powerful medium for the expression of differential status among men and women, but not among boys and girls, who have equal status in this population.

This study exammes the impact of macroeconomic and financial variables on the performance of the housing property market in South Africa using monthly data for the period January 1996 to June 2008. Orthogonalised and non-orthogonalised house price returns and real estate returns are utilised as proxies for the housing property market in separate models. Three main issues were empirically analysed in relation to the linkage between selected variables and the housing property market. The first aspect examined the relationship between selected macroeconomic and financial factors and property returns. Secondly, the study examined the influence that a unit shock to each variable has on property returns over a period of time. The third aspect focused on determining the proportion of property returns variation that results from changes in the macroeconomic and financial variables. VAR modelling was thus adopted to empirically analyse these three aspects. The results reveal that house price returns are influenced by most of the macroeconomic and financial variables used in this study. Specifically, the real effective exchange rate, interest rate spread and manufacturing production positively impact on house price returns while the domestic interest rate, the dividend yield and expected inflation have a negative effect. Furthermore, manufacturing production has a lagged effect on house price returns while the real effective exchange rate and domestic interest rate have a contemporaneous effect. Real estate returns are not influenced by most of the variables except for the domestic interest rate and dividend yield which have a negative effect.

This dissertation consists of three essays in applied microeconomics on the economics of science. The first chapter contribute to the understanding of fairness and recognition in innovation systems. The second and third chapters study the effect of government policies and university relocation on science and education outcomes respectively. The first paper, coauthored with Zihao Li, studies gender difference in innovation recognition using patent citations. We propose a method to quantify under-citation, by constructing a “should-cite” list for each of over 1.5 million patents based on textual similarity, using state-of-the-art natural language processing technique. We find that female-authored patents are approximately 12% more likely to be under-cited than male-authored patents. Additionally, male inventors are far more likely to under-cite patents written by female inventors. Our findings are consistent with the testable implications of taste-based discrimination but not statistical discrimination. Welfare analysis shows that past under-citations negatively impact future patenting activities, especially for female inventors. The second paper, coauthored with Elliott Ash, Mirko Draca and David Cai studies the impact of a large-scale scientist recruitment program – China’s Junior Thousand Talents Plan – on the productivity of recruited scholars and their local peers in Chinese host universities. Using a comprehensive dataset of published scientific articles, we estimate effects on quantity and quality in a matched difference-in-differences framework. We observe neutral direct productivity effects for participants over a 6-year post-period: an initial drop is followed by a fully offsetting recovery. However, the program participants collaborate at higher rates with more junior China-based co-authors at their host institutions. Looking to peers in the hosting department, we observe positive and rising productivity impacts for peer scholars, equivalent to approximately 0.6 of a publication per peer scholar in the long run. Heterogeneity analysis and the absence of correlated resource effects point to the peer effect being rooted in a knowledge spillover mechanism. The third paper studies the long run effect on local education outcomes of the temporary exodus of Chinese universities in the Second Sino-Japanese War (1937-1945). During the war, over 80% of China’s universities, along with the top tiers of China’s educated talents were forced to relocate to inland underdeveloped areas during the war. We find that the large inflow of educated elite intellectuals and universities increased local supply of secondary schools by 6.6% during and after the war period, indicating the effect cascades to lower tiers of education. However, such trend does not persist into the People’s Republic of China (PRC) era and we find limited effect on local education outcomes in the long run. We discuss the salience of locational fundamentals and education policies in explaining the absence of persistence.

No / This important and highly original book explores the application of economics to the subject of hate via such diverse topics as war, terrorism, road rage, witchcraft mania, marriage and divorce, and bullying and harassment.

Infrastructure—communications, energy, transport, waste, and water networks—is critical for economic activity and social well-being. Practitioners, politicians, and economists advocate high levels of investment in infrastructure under the rubric of 'planning for growth' (or the 'push' paradigm). This paradigm relies on complex public-private arrangements in the name of public interest. These seemingly reasonable arrangements are, however, not delivering their promise. Evidence shows that the needs of infrastructure users in rich and poor countries are not being met, many private providers of infrastructure earn rich returns, assets are rarely built in time or on budget, and there is tremendous waste in the operation of many infrastructure industries. No other sector could survive the profligacy and slack common in infrastructure. I distil the following primary propositions of the accepted wisdom, which is inspired by mainstream economics: First, infrastructure assets necessarily entail high sunk costs and large economies of scale. Consequently, assets last for very long periods of time, and they cannot be readily moved. Second, infrastructure outputs are homogeneous. Third, one network fits all users (large and small). Fourth, infrastructure users, even large ones, are likely to have weak bargaining power in procurement of infrastructure outputs. I challenge these four propositions of the conventional wisdom by putting forward alternative hypotheses. First, instead of being monolithic and costly, infrastructures can be assembled (and disassembled) as flexible modules for specific users in specific places. Drawing on option pricing theory in quantitative finance, I recast infrastructures as 'portfolios of real options'. Second, infrastructure outputs are, in fact, heterogeneous and differentiated services. Third, one infrastructure network cannot fit all users, either today or in the future. Users are remarkably heterogeneous, not only in terms of unique user preferences but also in terms of spatial location. Infrastructure networks need to evolve in tandem with user needs or risk spatial, temporal, and relational obsolescence. Finally, users, large and small, are adept at exerting strong bargaining power in procuring infrastructure both prior to and after rendering durable and immobile investments. Users also strategically deploy intermediaries, e.g. futures and Over-the-Counter (OTC) exchanges, and real estate developers, to negotiate private contracts for infrastructure services. These findings are supported by two case studies. The first case study details the process by which ThyssenKrupp, a large steel company, bargained for its infrastructure by locating to a manufacturing site in the U.S. The second case study focuses on residents of Lavasa, one of the largest property developments in India. Here, small users of infrastructure exert strong bargaining power with the aid of intermediaries—the real estate developer and the property asset manager. New departures in infrastructure provision are urgently needed at a practical level. Poor investments rendered today—particularly if costly, inflexible, and durable—will suffocate tomorrow’s possibilities. The spatial, temporal, and relational approach proposed in this dissertation begins to offer an alternative account of how tomorrow can be modularly shaped.

This thesis is an investigation into the microeconomic mechanisms that govern some of the occupational choices faced by workers in Sub-Saharan Africa, and into the monetary and non-monetary returns to their decisions. Chapter 1 begins by exploring the decision process that leads workers to allocate themselves to different occupations within the economy. In particular, I investigate the role of risk-aversion in the allocation of workers between formal and informal jobs in Ghana, hence attempting to explain a fundamental dimension of duality through an investigation into workers' preferences. In my model of sectoral allocation risk-averse workers can opt between entering the free-entry informal sector and queuing for formal occupations. Conditional on identifying the riskier option, the model yields testable implications on the relationship between risk-aversion and workers' allocation. My testing strategy proceeds in two steps. First, using the first three waves of the Ghana Household Urban Panel Survey (GHUPS) dataset, I estimate expected income uncertainty and find it considerably higher in the informal sector than in formal employment. Second, using experimental data to elicit risk-attitudes I estimate the effect of risk-aversion on occupational choices and I find that, in line with the first result, more risk-averse workers are more likely to queue for formal jobs and less likely to be in the informal sector. The conclusion of the first chapter is that attitudes to risk should feature more prominently in models of sector allocation and in the design of labour market policies, in particular when those policies aim to impact workers' vulnerability to risk and uncertainty. Chapter 2 focuses on the largest occupational category in the Developing world, self-employed workers with small productive activities, and it tries to estimate the returns to different productive assets, namely physical capital, labour and human capital. These are the workers that form most of the informal sector analysed in chapter 1, which allows me to draw a direct link with the analysis so far. The chapter begins by specifying a model for the income-generating process grounded in the literature on firms' production and hence abridging the gap between the analysis of individual earnings and the study of firms' value added. Identification in the empirics is achieved by means of panel estimators that are suitable to address the endogeneity of input choices, which derives from both time-varying and time-invariant unobservable heterogeneity. The use of these estimators is made feasible by the length of the Ghanaian Household Urban Panel Survey dataset at CSAE. I also explore issues of endogeneity in the selection of different technologies, defined by their relative capital and labour intensity. Finally, I analyse the shape of returns to capital, with the aim to detect potential non-convexities in technology. The results show that capital and work-experience play the strongest role in income-generation, while the shares of value added attributed to labour and to formal schooling are low. Marginal returns to investment are high at low capital levels and they decrease very rapidly, pointing against the existence of non-convexities due to minimum scale requirements, but implying that real income gains resulting form micro-investment are modest. Chapter 3 returns to the issue of earnings uncertainty and risk-aversion explored in Chapter 1, but it now takes the allocation choice as given and explores the direct welfare implications of income uncertainty for worker's well-being. Namely, the chapter explores the relationship between income and welfare, with a particular attention on the link between income vulnerability and happiness. Using unique longitudinal data on life-satisfaction and labour market outcomes, I estimate an individual measure of vulnerability (defined as the probability of falling below a low-income threshold) and investigate its effect on well-being. After controlling for unobservable individual fixed effects, work-satisfaction, relative income and other relevant worker characteristics, I find a sizable impact of vulnerability, over and above the income effect. When I explore the mechanisms behind my results, I find that aspiration adaptation to current income may result in a transitory income effect. Moreover, using my direct measure of attitudes to risk from field-experiments (already used in chapter 1), I can test directly the hypothesis that more risk-averse agents suffer more heavily from a given increase in income vulnerability. Overall, my findings support policy interventions that aim to reduce vulnerability, as I expect such policies to have a 'direct' impact on agents' happiness given the prevailing attitudes to risk and uncertainty in the population. Finally, from the point of view of overall social welfare, my results suggest that non-Rawlsian growth models, whereby 'someone may be left behind', may fail to enhance general welfare, for high enough levels of risk-aversion in the population, if the risk of falling behind is sufficiently widespread.

L’hypothèse à l’origine de ce travail est que les remises en question récentes du concept de capital humain sont inextricablement liées aux conditions dans lesquelles cette théorie a émergé. En conséquence, remonter aux origines de la révolution du capital humain permet d’apporter un éclairage nouveau sur les problèmes de définition et de mesure que le conceptrencontre aujourd’hui. Dans une perspective d’histoire de la pensée économique, nous nous proposons d’analyser les ondements conceptuels du cadre théorique du capital humain qui a émergé à la fin des années 1950 sous l’impulsion de trois auteurs : Gary Becker, Jacob Mincer et Théodore Schultz. Au début des années 1950, Schultz utilise le concept de capitalhumain pour expliquer le résidu de croissance. Le programme de recherche qu’il lance s’inscrit ainsi dans le corpus des théories de la croissance. Schultz parvient immédiatement à faire la preuve de la pertinence de ce facteur de production oublié. Au même moment, c’est-à-dire au milieu des années 1950, Mincer travaille lui aussi sur le concept de capital humain, mais comme déterminant de la distribution des revenus individuels. Quant à Becker, ce n’est qu’à la fin des années 1950 qu’il s’intéressera au capital humain : il propose d’analyser les choix individuels de formation au moyen de la théorie du choix rationnel et d’étudier le taux de rendement privé de l’investissement dans l’éducation. Le modèle microéconomique élaboré par Becker sera immédiatement utilisé par Mincer et va s’imposer aux dépens de l’approche macroéconomique de Schultz. / The hypothesis underlying this work is that the recent criticism faced by human capital concept are inextricably linked to the emerging conditions of the theory. Getting to the roots of the human capital revolution gives a new perspective on both theoretical and measurement issues. Using the history of economic thought perspective, we analyse the conceptual foundations of the human capital theory developed by Gary Becker, Jacob Mincer and Theodore Schultz in the late fifties. In 1950, Schultz used the concept of human capital in order to explain growth residual. His research program is embodied in the corpus ofgrowth theory. Schultz promptly succeeds to show the importance of this forgotten factor. Simultaneously, Mincer works on the same concept considering it as the main determinant of the personal income distribution. Few years later, Becker tried to understand the individual choice of training using the rational choice theory, and study the private rate of return of investment in education. His model, immediately adopted by Mincer, will establish itself as the standard model, vanishing the macroeconomic approach of Schultz.

Die elektrische Energieform gewinnt im Kraftfahrzeug wegen ihrer Nutzungsvielfalt und sehr guten Steuerbarkeit für die Realisierung neuartiger Funktionen zunehmend an Bedeutung. Voraussetzung für ihren Einsatz ist eine zuverlässige und effiziente Bereitstellung durch das Kfz-Energiebordnetz. Dafür ist ein intelligentes Energiemanagement erforderlich, welches mit geeigneten Strategien die Leistungsflüsse im Energiesystem koordiniert. In dieser Arbeit werden die beiden Entwurfsziele der Zuverlässigkeit und der Effizienz bei der Entwicklung von elektrischen Energiemanagement-Strategien systematisch betrachtet. Es erfolgt eine Beschreibung und Zuordnung der einzelnen Ziele und Maßnahmen anhand der Energieflüsse und Wirkungsketten. Ein Schwerpunkt bildet dabei die Beherrschung von Lastwechseln im Bordnetz. Für Aussagen hinsichtlich einer effizienten Erzeugung elektrischer Energie erfolgt eine Untersuchung der Energiewandlungskette anhand analytischer Methoden und mit Hilfe einer simulationsgestützten Optimierung. Ein weiterer Fokus der Arbeit liegt in der Betrachtung zur Anwendung ökonomischer Modelle für eine Energiekoordination. Es werden die theoretischen Grundlagen der Mikroökonomie zusammengestellt und mögliche Funktionsstrukturen eines einseitigen und zweiseitigen Allokationsmechanismus verglichen und bewertet. Abschließend zeigen experimentelle Untersuchungen an einem Bordnetzprüfstand zum Lastwechselverhalten und die Integration eines Energiemanagement-Systems den praktischen Bezug zum realen System.