Democratic purgatory: The failure of democracy in Venezuela

This research provides an understanding of the conditions that presage the failure of consolidated democratic political regimes through constitutional processes. In seeking to answer the question of how democracy might fail through democratic means, this study has revealed a gap in the literature on democratization. Venezuela was selected as a heuristic case study to explain this phenomenon. Heuristic case studies place less emphasis on the more configurative or descriptive elements of the case itself, and instead see the case as a point of departure for the formulations of theoretical propositions. While in-case hypotheses are possible, heuristic case studies make it an explicit research plan to tease out mechanisms that exist in a particular case study that might survive in other situations. ^ This study demonstrates that the elements in society that act as direct participants in the establishment of a democratic political system are able to maintain their position in the new order largely through an expansion of their ability to meet popular demands through clientelistic arrangements. While these corporatist groups may serve to facilitate social mobilization during the establishment of democratic regimes, they do so only in so far as they can maintain social control of in-group membership without fully providing for representative democracy. Once these democratic institutions are consolidated as key parts of the democratic structure, these corporatist arrangements provide for a type of unstable democratic purgatory: democracy is not fully representative, yet it is not completely unresponsive to the demands of the electorate. ^ The condition of democratic purgatory produces a paradox whereby democracy can be undemocratic under certain conditions. The stability of these regimes allows for democratic consolidation, despite the undemocratic basis of legitimacy. While these regimes can undergo consolidation, ultimately, this condition is unstable: either these regimes must establish an endogenous basis of political legitimacy (one that is not simply a function of the corporatist/clientelistic political structure), or the democracy will suffer a qualitative decline that may result in a democratic breakdown. Furthermore, this study finds that the viability of any type of democratic regime rests upon its adaptability to ensure adequate representativeness. ^

Tracking rates of ecotone migration due to salt-water encroachment using fossil mollusks in coastal South Florida

We determined the rate of migration of coastal vegetation zones in response to salt-water encroachment through paleoecological analysis of mollusks in 36 sediment cores taken along transects perpendicular to the coast in a 5.5 km2 band of coastal wetlands in southeast Florida. Five vegetation zones, separated by distinct ecotones, included freshwater swamp forest, freshwater marsh, and dwarf, transitional and fringing mangrove forest. Vegetation composition, soil depth and organic matter content, porewater salinity and the contemporary mollusk community were determined at 226 sites to establish the salinity preferences of the mollusk fauna. Calibration models allowed accurate inference of salinity and vegetation type from fossil mollusk assemblages in chronologically calibrated sediments. Most sediments were shallow (20–130 cm) permitting coarse-scale temporal inferences for three zones: an upper peat layer (zone 1) representing the last 30–70 years, a mixed peat-marl layer (zone 2) representing the previous ca. 150–250 years and a basal section (zone 3) of ranging from 310 to 2990 YBP. Modern peat accretion rates averaged 3.1 mm yr)1 while subsurface marl accreted more slowly at 0.8 mm yr)1. Salinity and vegetation type for zone 1 show a steep gradient with freshwater communities being confined west of a north–south drainage canal constructed in 1960. Inferences for zone 2 (pre-drainage) suggest that freshwater marshes and associated forest units covered 90% of the area, with mangrove forests only present along the peripheral coastline. During the entire pre-drainage history, salinity in the entire area was maintained below a mean of 2 ppt and only small pockets of mangroves were present; currently, salinity averages 13.2 ppt and mangroves occupy 95% of the wetland. Over 3 km2 of freshwater wetland vegetation type have been lost from this basin due to salt-water encroachment, estimated from the mollusk-inferred migration rate of freshwater vegetation of 3.1 m yr)1 for the last 70 years (compared to 0.14 m yr)1 for the pre-drainage period). This rapid rate of encroachment is driven by sea-level rise and freshwater diversion. Plans for rehydrating these basins with freshwater will require high-magnitude re-diversion to counteract locally high rates of sea-level rise.

Predicting success or failure of tax -base revenue sharing attempts: A comparative analysis

To promote regional or mutual improvement, numerous interjurisdictional efforts to share tax bases have been attempted. Most of these efforts fail to be consummated. Motivations to share revenues include: narrowing fiscal disparities, enhancing regional cooperation and economic development, rationalizing land-use, and minimizing revenue losses caused by competition to attract and keep businesses. Various researchers have developed theories to aid understanding of why interjurisdictional cooperation efforts succeed or fail. Walter Rosenbaum and Gladys Kammerer studied two contemporaneous Florida local-government consolidation attempts. Boyd Messinger subsequently tested their Theory of Successful Consolidation on nine consolidation attempts. Paul Peterson's dual theories on Modern Federalism posit that all governmental levels attempt to further economic development and that politicians act in ways that either further their futures or cement job security. Actions related to the latter theory often interfere with the former. Samuel Nunn and Mark Rosentraub sought to learn how interjurisdictional cooperation evolves. Through multiple case studies they developed a model framing interjurisdictional cooperation in four dimensions. ^ This dissertation investigates the ability of the above theories to help predict success or failure of regional tax-base revenue sharing attempts. A research plan was formed that used five sequenced steps to gather data, analyze it, and conclude if hypotheses concerning the application of these theories were valid. The primary analytical tools were: multiple case studies, cross-case analysis, and pattern matching. Data was gathered from historical records, questionnaires, and interviews. ^ The results of this research indicate that Rosenbaum-Kammerer theory can be a predictor of success or failure in implementing tax-base revenue sharing if it is amended as suggested by Messinger and further modified by a recommendation in this dissertation. Peterson's Functional and Legislative theories considered together were able to predict revenue sharing proposal outcomes. Many of the indicators of interjurisdictional cooperation forwarded in the Nunn-Rosentraub model appeared in the cases studied, but the model was not a reliable forecasting instrument. ^

NOTCH1 Gain of Function in Germ Cells Causes Failure of Spermatogenesis in Male Mice

NOTCH1 is a member of the NOTCH receptor family, a group of single-pass trans-membrane receptors. NOTCH signaling is highly conserved in evolution and mediates communication between adjacent cells. NOTCH receptors have been implicated in cell fate determination, as well as maintenance and differentiation of stem cells. In the mammalian testis expression of NOTCH1 in somatic and germ cells has been demonstrated, however its role in spermatogenesis was not clear. To study the significance of NOTCH1 in germ cells, we applied a cre/loxP approach in mice to induce NOTCH1 gain- or loss-of function specifically in male germ cells. Using a Stra8-icretransgene we produced mice with conditional activation of the NOTCH1 intracellular domain (NICD) in germ cells. Spermatogenesis in these mutants was progressively affected with age, resulting in decreased testis weight and sperm count. Analysis of downstream target genes of NOTCH1 signaling showed an increased expression of Hes5, with a reduction of the spermatogonial differentiation marker, Neurog3 expression in the mutant testis. Apoptosis was significantly increased in mouse germ cells with the corresponding elevation of pro-apoptotic Trp53 and Trp63genes' expression. We also showed that the conditional germ cell-specific ablation of Notch1 had no effect on spermatogenesis or male fertility. Our data suggest the importance of NOTCH signaling regulation in male germ cells for their survival and differentiation.

Donde esten mis hijos alli que me entierren. the migration history of Aura Lila Callejas

"Adonde esten mis hijos alli que me entierren," presents the migration history of my great-aunt Aura Lila Callejas. This work utilizes the oral history method to examine one woman's migration experience in an attempt to identify various theoretical issues. Aura Lila's immigration experience sheds light on a number of different issues, including the reasons why people migrate and how they adapt to an entirely new and often frightening set of circumstances in the country of arrival. The oral history method has proven useful in presenting some of the ways in which structural factors combine with personal motivations to provide the impetus for Aura Lila's journey of international migration. My work with Aura Lila has also served to highlight some of the existing gaps in the current literature regarding Nicaraguans in the United States and the importance of the family within the overall process of migration. Finally, this work explores the nature of the relationship between the researcher and subject within the ethnographic process. While much of Aura Lila's story remains unique and specific to her family's history, her narrative can be related to the growing body of literature focusing on women's life histories.