Savages into citizens: Families, political purge, and reconciliation in Cordoba, Argentina, 1820--1862

This dissertation explores the political exclusion and reintegration of families and individuals in Córdoba, Argentina during the early nineteenth-century. Part one is an examination of how Federals in Córdoba managed the process of political identification and purge. Federals set up ad hoc institutions that were responsible for targeting political subversives within provincial communities. From 1831 to 1852, Federals managed to target, or “classify,” over 400 individuals and families in various towns and villages as “savage Unitarians,” a political label that meant the certain loss of rights, property, exile, and worse. Federals also sought active participation among “citizens” from all levels of society. Thus, I argue that the process of correctly identifying a “savage Unitarian” in Córdoba was constantly subject to modification at the local level. I also reconstruct the stories of accused families as they struggled to survive the political purges. Many of the families were large landowners and wealthy merchants, confirming that early republican Argentine political struggles were often intra-elite affairs. However, the “classified” individuals and families also represented a variety of socio-economic, ethnic, and racial groups. ^ The second part of this study focuses on families who petitioned Federal authorities for the restitution of rights and property. They proclaimed their loyalty to the “Federal cause,” and often, they had friends and family who could vouch for their claims. These petitions forced Federal authorities to doubt the precision of political identification and re-think how the ideology of Federalism was defined. Authorities granted most requests for repatriation, thereby creating a process of reintegration that included amnesty and restitution. Yet, this system failed to repair the psychological, emotional, materials, and political effects of political purge. Conflicts between society and state led to numerous misunderstandings about what restitution, justice, and reconciliation meant. The new regime's leaders more often denied restitution claims to formerly accused families and individuals, demonstrating that the journey from “savage” to citizen left an indelible imprint on family life in mid-nineteenth century Argentina. ^

Hyphenated cultures: Ethnicity and nation in Trinidad

This dissertation attempts to unravel why and how postcolonial Trinidad has displayed relative stability in spite of the presence of the factors that have produced conflict and instability in other postcolonial societies.^ Trinidad's distinctive social formation began in the colonial period with a unique politics of culture among the landowning European groups, Anglican English and French Creole. Contrary to the materialist assumption of landowners' class solidarity, the development of Trinidad's plantation economy into two crops, each controlled by a separate European ethno-religious faction, impeded the integration and subsequent ideological domination of European-Christians. Throughout the nineteenth century neither group dominated the other, nor did they fuse into a single ruling class. The dynamics between them both generated recurring conflict while simultaneously creating mechanisms that limited conflict. ^ Based on original in-depth fieldwork and historical analysis, the dissertation proceeds to demonstrate that Trinidad's unique intra-class conflict within the dominant European population has produced hyphenated, as opposed to hybridized cultural elements. Supplementing the historical analysis with empirical examinations of contemporary inter-religious rituals and post-colonial politics this dissertation argues that social integration is inseparable from the question of inter-cultural mixture or articulation. In Trinidad, however, the resulting combination of distinct cultural elements is neither a "plural society" (M.G. Smith 1965; Despres 1967) nor an integrated totality in the structural-functionalistic sense (R.T. Smith 1962; Braithwaite 1967). Moreover, Trinidad does not conform to the post-structural framework's depiction of the social linkage between power and culture. The concept of cultural hybridization is equally misleading in the case of Trinidad. The underlying assumption of a monolithic European population's cultural hegemony and post-structural analysis's almost exclusive focus on the inter -class politics of culture seriously misrepresent and misunderstand Trinidadian cultural and its associated social and political relations. The dissertation examines this reflexive influence of culture not as an instrument of the powerful few but as an autonomous force that reproduces social divisions, yet restrains conflict.^

Physical factors influencing the distribution of a top predator in a subtropical oligotrophic estuary

We used longline fishing to determine the effects of distance from the ocean, season, and short-term variation in abiotic conditions on the abundance of juvenile bull sharks (Carcharhinus leucas) in an estuary of the Florida Everglades, U.S.A. Logistic regression revealed that young-of-the-year sharks were concentrated at a protected site 20 km upstream and were present in greater abundance when dissolved oxygen (DO) levels were high. For older juvenile sharks (age 1+), DO levels had the greatest influence on catch probabilities followed by distance from the ocean; they were most likely to be caught at sites with .3.5 mg L21 DO and on the main branch of the river 20 km upstream. Salinity had a relatively small effect on catch rates and there were no seasonal shifts in shark distribution. Our results highlight the importance of considering DO as a possible driver of top predator distributions in estuaries, even in the absence of hypoxia. In Everglades estuaries hydrological drivers that affect DO levels (e.g., groundwater discharge, modification of primary productivity through nutrient fluxes) will be important in determining shark distributions, and the effects of planned ecosystem restoration efforts on bull sharks will not simply be mediated by changing salinity regimes and the location of the oligohaline zone. More generally, variation in DO levels could structure the nature and spatiotemporal pattern of top predator effects in the coastal Everglades, and other tropical and subtropical estuaries, because of interspecific variation in reliance on DO within the top predator guild.

Essays in economic growth, political economy and institutions

This dissertation analyzes the effects of political and economic institutions on economic development and growth.^ The first essay develops an overlapping-generations political economy model to analyze the incentives of various social groups to finance human capital accumulation through public education expenditures. The contribution of this study to the literature is that it helps explain the observed differences in the economic growth performance of natural resource-abundant countries. The results suggest that the preferred tax rates of the manufacturers on one hand and the political coalition of manufacturers and landowners, on the other hand, are equal to the socially optimal tax rate. However, we show that owners of natural resources prefer an excessively high tax rate, which suppresses aggregate output to a suboptimal level.^ The second essay examines the relationship between the political influence of different social classes and public education spending in panel data estimation. The novel contribution of this paper to the literature is that I proxy the political power and influence of the natural resource owners, manufacturers, and landowners with macroeconomic indicators. The motivation behind this modeling choice is to substantiate the definition of the political power of social classes with economic fundamentals. I use different governance indicators in the estimations to find out how different institutions mediate the overall impact of the political influence of various social classes on public education spending. The results suggest that political stability and absence of violence and rule of law are the important governance indicators.^ The third essay develops a counter argument to Acemoglu et al. (2010) where the thesis is that French institutions and economic reforms fostered economic progress in those German regions invaded by the Napoleonic armies. By providing historical data on urbanization rates used as proxies for economic growth, I demonstrate that similar different rates of economic growth were observed in the regions of France in the post-Napoleonic period as well. The existence of different economic growth rates makes it hard to argue that the differences in economic performance in the German regions that were invaded by the French and those that were spared a similar fate follow from regional differences in economic institutions.^

Text analytics of social media: Sentiment analysis, event detection and summarization

In the last decade, large numbers of social media services have emerged and been widely used in people's daily life as important information sharing and acquisition tools. With a substantial amount of user-contributed text data on social media, it becomes a necessity to develop methods and tools for text analysis for this emerging data, in order to better utilize it to deliver meaningful information to users. ^ Previous work on text analytics in last several decades is mainly focused on traditional types of text like emails, news and academic literatures, and several critical issues to text data on social media have not been well explored: 1) how to detect sentiment from text on social media; 2) how to make use of social media's real-time nature; 3) how to address information overload for flexible information needs. ^ In this dissertation, we focus on these three problems. First, to detect sentiment of text on social media, we propose a non-negative matrix tri-factorization (tri-NMF) based dual active supervision method to minimize human labeling efforts for the new type of data. Second, to make use of social media's real-time nature, we propose approaches to detect events from text streams on social media. Third, to address information overload for flexible information needs, we propose two summarization framework, dominating set based summarization framework and learning-to-rank based summarization framework. The dominating set based summarization framework can be applied for different types of summarization problems, while the learning-to-rank based summarization framework helps utilize the existing training data to guild the new summarization tasks. In addition, we integrate these techneques in an application study of event summarization for sports games as an example of how to better utilize social media data. ^

Text Analytics of Social Media: Sentiment Analysis, Event Detection and Summarization

In the last decade, large numbers of social media services have emerged and been widely used in people's daily life as important information sharing and acquisition tools. With a substantial amount of user-contributed text data on social media, it becomes a necessity to develop methods and tools for text analysis for this emerging data, in order to better utilize it to deliver meaningful information to users. Previous work on text analytics in last several decades is mainly focused on traditional types of text like emails, news and academic literatures, and several critical issues to text data on social media have not been well explored: 1) how to detect sentiment from text on social media; 2) how to make use of social media's real-time nature; 3) how to address information overload for flexible information needs. In this dissertation, we focus on these three problems. First, to detect sentiment of text on social media, we propose a non-negative matrix tri-factorization (tri-NMF) based dual active supervision method to minimize human labeling efforts for the new type of data. Second, to make use of social media's real-time nature, we propose approaches to detect events from text streams on social media. Third, to address information overload for flexible information needs, we propose two summarization framework, dominating set based summarization framework and learning-to-rank based summarization framework. The dominating set based summarization framework can be applied for different types of summarization problems, while the learning-to-rank based summarization framework helps utilize the existing training data to guild the new summarization tasks. In addition, we integrate these techneques in an application study of event summarization for sports games as an example of how to better utilize social media data.

The Role of Teleost Grazers in a Relatively Pristine Seagrass Ecosystem

Trophic downgrading of ecosystems necessitates a functional understanding of trophic cascades. Identifying the presence of cascades, and the mechanisms through which they occur, is particularly important for seagrass meadows, which are among the most threatened ecosystems on Earth. Shark Bay, Western Australia provides a model system to investigate the potential importance of top-down effects in a relatively pristine seagrass ecosystem. The role of megagrazers in the Shark Bay system has been previously investigated, but the role of macrograzers (i.e., teleosts), and their importance relative to megagrazers, remains unknown. The objective of my dissertation was to elucidate the importance of teleost macrograzers in transmitting top-down effects in seagrass ecosystems. Seagrasses and macroalgae were the main food of the abundant teleost Pelates octolineatus, but stable isotopic values suggested that algae may contribute a larger portion of assimilated food than suggested by gut contents. Pelates octolineatus is at risk from numerous predators, with pied cormorants (Phalacrocorax varius) taking the majority of tethered P. octolineatus. Using a combination of fish trapping and unbaited underwater video surveillance, I found that the relative abundance of P. octolineatus was greater in interior areas of seagrass banks during the cold season, and that the mean length of P. octolineatus was greater in these areas compared to along edges of banks. Finally, I used seagrass transplants and exclosure experiments to determine the relative effect of megagrazers and macrograzers on the establishment and persistence of three species of seagrasses in interior microhabitats. Teleost grazing had the largest impact on seagrass species with the highest nutrient content, and these impacts were primarily observed during the warm season. My findings are consistent with predictions of a behaviorally-mediated trophic cascade initiated by tiger sharks (Galeocerdo cuvier) and transmitted through herbivorous fishes and their predators.