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Thesis (Ph. D.)--Public Policy, Georgia Institute of Technology, 2006. / Dr. Susan Cozzens, Committee Chair ; Dr. Reginald DesRoches, Committee Member ; Dr. Monica Gaughan, Committee Member ; Dr. Bhaven Sampat, Committee Member ; Dr. Philip Shapira, Committee Member.

This study examined the amount of European genetic admixture in the enslaved African population from Newton Plantation, Barbados. Newton Plantation was a British sugar plantation from the 17th to 19th centuries. Approximately 150 individuals were recovered from an unmarked slave cemetery during archaeological investigations in the 1970s and 1990s. Using maximum mesiodistal and buccolingual tooth measurements of the available teeth from the individuals in the cemetery, Newton was compared to nineteen comparative samples of African, European, African American and European American populations that date from the time of British colonization to the 20th century. Previous European admixture estimations in the Newton Plantation cemetery sample were 5-10% (Corruccini et al., 1982; Ritter, 1991); this study found similar rates of admixture in the population (5.38-10.25%). Because of social practices in the Caribbean during the time of slavery, European admixture could have resulted in preferential treatment of slaves with such genetic background.

Orientador: Sarita Leonel / Banca: Aloísio Costa Sampaio / Banca: Simone Rodrigues da Silva / Resumo: A aceroleira é uma planta de clima tropical que produz frutos ricos em vitamina C. Esta fruta é comercializada principalmente na forma de polpa congelada e fruto in natura. O objetivo deste estudo foi avaliar a fenologia, produção e qualidade dos frutos da aceroleira cv. Olivier. Para tanto foi implantado um experimento em pomar comercial no município de Junqueirópolis-SP, no ano agrícola de 2009/2010. Foram avaliados dois ciclos reprodutivos: setembro e janeiro. Para avaliação fenológica, em cada época foram marcados 40 botões florais em 10 plantas, totalizando 400 botões. O ciclo foi dividido em estádios fenológicos, sendo avaliada a duração dos estádios, taxa de frutificação e crescimento dos frutos. Na avaliação da produção os frutos maduros foram colhidos e pesados. Para análise qualitativa foram coletadas amostras de frutos e avaliados o peso médio de fruto, cor de fruto e as características químicas da polpa: teor de sólidos solúveis, pH, acidez titulável, açúcares redutores, 'ratio' e teor de ácido ascórbico. Os resultados obtidos permitiram concluir que a duração dos estádios é influenciada pela temperatura ambiente, sendo mais curto em condições de altas temperaturas. A elevada incidência de precipitações interfere negativamente na fixação dos frutos da aceroleira, prejudicando a produção. Também pode-se observar que o maior índice de abortamento ocorre no estádio de perda de pétala. Com relação ao desenvolvimento dos frutos, apesar da diferença na velocidade de crescimento e tamanho dos frutos, em ambas as avaliações pode-se observar que houve um mais acentuado nos primeiros 8 dias, seguindo depois um padrão linear. Para os dados de produção e qualidade dos frutos pode-se concluir que houve influência da época... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The barbados cherry tree is a tropical plant that produces fruits rich in vitamin C. This fruit is marketed mainly in the form of frozen pulp and fresh fruit. The present study aimed to evaluate the reproductive phenology, production and fruit quality of barbados cherry trees cv. Olivier at different times. Thus an experiment was deployed in the city of orchard Junqueirópolis-SP, in the agricultural year 2009/2010. Were evaluated two reproductive cycles: September and January. To evaluated of phenology in each times were marked 40 buds on 10 plants, totaling 400 buttons. The cycle was divided at different phenological stages, were evaluated for the duration of the stage, rate of fruit and fruit growth. Measuring the output ripe fruits were harvested and weighed. For qualitative analysis of fruit samples were collected and evaluated the average fruit weight, fruit color and chemical characteristics of pulp: soluble solids, pH, acidity, reducing sugars, 'ratio' and ascorbic acid. The results showed that the duration of the stages is influenced by temperature, being shorter in high temperature conditions. The high incidence of rainfall impacts negatively on fruit set of barbados cherry trees, hurting production. One can also observe that the highest rate of abortion occurs the stage of petal loss. In relation to fruit development, despite the difference in growth rate and fruit size in both assessments can be observed that there was a more pronounced during the first 8 days and then follows a linear pattern. For data production and fruit quality can be concluded that there was influence of the time, with production in September was higher, but the fruits harvested in January showed a higher average fruit weight. There were differences in pulp quality parameters of two times, with the fruits of the harvest in September... (Complete abstract click electronic access below) / Mestre

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Yes / The World Health Organization (WHO) recommends 100% blood should be from voluntary non-remunerated donors (VNRD) yet the majority of blood donations (75%) in Barbados are family/replacement donations. Increasing VNRD is paramount to achieving a safe, reliable blood supply and understanding the population is a strategy suggested by the WHO to inform donor recruitment and education. To obtain information to devise strategies for a voluntary donor mobilization campaign in Barbados. Methods: Participants in Barbados (n=429) completed a self-administered questionnaire in 2014. The questionnaire comprised 31 questions including demographics (age, sex, highest educational attainment) and blood donation-related knowledge, attitudes and practices. Analysis of variance, t-test and linear regression were used to analyse data. Results: Fifty-three per cent (n=219) of participants had previously donated blood; only 23.9% of these had donated within the past two years and almost half were family/replacement donors only. Knowledge deficits included blood donation requirements, deferral factors and maximum yearly donations. Most participants (79%) were willing to donate with more information. Participants with higher educational attainment and previous donors had higher total knowledge and attitude scores (p<0.01). Single, female, and younger participants were less likely to donate blood (p<0.05). Conclusion: Barbados can likely increase voluntary blood donation rates by addressing knowledge deficits through education campaigns and increasing awareness of the need for donation.

In dieser Dissertation wird das kompressible, nicht-hydrostatische und dreidimensionale Modell All Scale Atmospheric Model (ASAM) für Grobstruktur- bzw. Large-Eddy-Simulationen (LES) angewendet, um lokale Inseleffekte in der karibischen Passatwindzone zu untersuchen. Da das Modell bis dato noch keine Anwendung im Bereich von LES feuchter atmosphärischer Grenzschichten und heterogener Oberflächen fand, wurden einige Bestandteile zum Modellcode hinzugefügt oder überarbeitet. Ein Hauptaugenmerk liegt dabei auf das Einbeziehen orographischer Strukturen mittels angeschnittener Zellen (engl. cut cells). Sowohl die räumliche und zeitliche Diskretisierung der Modellgleichungen als auch die nötigen physikalischen Parameterisierungen werden in einer umfassenden Modellbeschreibung zusammengefasst. Die Robustheit und Stabilität der Modellformulierung wird durch eine Reihe von Simulationen idealisierter Testfälle bestätigt. Large-Eddy-Simulationen werden für das Gebiet der Karibikinsel Barbados zur Untersuchung von Inseleffekten bezüglich Grenzschichtmodifikation, Wolkenbildung und vertikaler Durchmischung von Aerosolen durchgeführt. Durch das Vorhandensein einer topographisch strukturierten Inseloberfläche in der Mitte des Modellgebietes muss das Modellsetup offene seitliche Randbedingungen beinhalten. Damit das einströmende Windfeld konsistent mit der Dynamik einer turbulenten, marinen Grenzschicht ist, wird eine neue Methode implementiert und angewendet, welche auf Störungen des potentiellen Temperaturfeldes mittels finiter Amplituden basiert. Beobachtungen aus der SALTRACE-Messkampagne werden benutzt, um die Modellläufe anzutreiben. Die Ergebnisse einiger Sensitivitätstests zeigen Probleme der Modellierung im Bereich der \"Terra incognita\" auf. Dabei handelt es sich um die Modellierung auf räumlichen Skalen, welche zwischen denen von LES und wolkenauflösenden Modellen liegen. Außerdem werden Auswirkungen von entweder turbulent oder laminar anströmenden Windfeldern auf die Simulationsergebnisse untersucht. Besonders die Wolkeneigenschaften im Lee von Barbados werden in diesen Simulationen merklich beeinflusst. Ergebnisse einer weiteren Simulation mit einer sehr starken Passatinversion bringt deren Einfluss auf die Dicke und Höhe der simulierten Wolkenschichten zum Vorschein. Die Veränderung von Saharastaubschichten, welche Barbados über weiträumigen Transport über den Atlantik erreichen, wird analysiert. Die Auswirkungen beinhalten sowohl eine Ausdünnung und ein Absinken dieser Schichten als auch turbulenter Transport in Richtung Erdoberfläche. Die genaue Position der beeinflussten Schichten und die Stärke des turbulenten Mischens werden hauptsächlich von der atmosphärischen Schichtung, der Inversionsstärke und Windscherung gesteuert. Vergleiche zwischen den LES-Modellergebnissen und Daten aus Doppler-Windlidarmessungen zeigen gute Übereinstimmungen in der Formierung der konvektiven Strukturen tagsüber und des Vertikalwindfeldes. / In this thesis, the fully compressible, three-dimensional, nonhydrostatic atmospheric model called All Scale Atmospheric Model (ASAM) is utilized for large eddy simulations (LES) to investigate local island effects at the Caribbean. Since the model has not been applied to LES for moist boundary layers and heterogeneous surfaces so far, several parts are added to the model code or reworked. A special focus lies on the inclusion of orographical structures via the cut cell method. Spatial and temporal discretization as well as necessary physical parameterizations are summarized in a thorough model description. The robustness of the model formulation is confirmed by a set of idealized test case simulations. Large eddy simulations are performed for the area of the Caribbean island Barbados to investigate island effects on boundary layer modification, cloud generation and vertical mixing of aerosols. Due to the presence of a topographically structured island surface in the domain center, the model setup has to be designed with open lateral boundaries. In order to generate inflow turbulence consistent with the upstream marine boundary layer forcing, the newly developed cell perturbation method based on finite amplitude perturbations is applied. Observations from the SALTRACE field campaign are used to initialize the model runs. Several numerical sensitivity tests are carried out to demonstrate the problems related to \"gray zone modeling\" beyond LES scales or when the turbulent marine boundary layer flow is replaced by laminar winds. Especially cloud properties west of Barbados (downwind) are markedly affected in these simulations. Results of an additional simulation with a strong trade-wind inversion reveal its effect on cloud layer depth and height. The modification of Saharan dust layers reaching Barbados via long-range transport over the North Atlantic is analyzed. Effects of layer thinning, subsidence and turbulent downward transport near the layer bottom become apparent. The position of these layers and strength of downward mixing is found to be mainly controlled atmospheric stability, inversion strength and wind shear. Comparisons of LES model output with wind lidar data show similarities in the formation of the daytime convective plume and the vertical wind structure.

Historians have long been drawn to the story of Barbados and the tales of sugar, slavery, empire, and wealth that defined the colonial history of this small West Indian island lying on the southeastern margins of the Caribbean Sea. First settled by the English in 1627, it quickly developed into ‘one of the richest Spotes of ground in the wordell’ after the introduction of sugar cane agriculture in the early 1640s and, by 1660, had become one of the most valuable and influential colonial possessions in the western hemisphere. Barbados was famous in its own time, especially after Richard Ligon, a three year resident on the island from 1647 to 1650, wrote his popular A True and Exact History of the Iland of Barbados in 1657. In this work, he vividly described a range of topics that included the island’s exotic flora and fauna, the methods used to convert cane into sugar, the trials many experienced in adjusting to life in the tropics, and the arrival of enslaved Africans for a public eager to receive such information on the distant domains of a growing empire. Contemporary scholars followed Ligon with other works in which Barbados figured prominently, such as John Oldmixon’s The British Empire in America (1708) and two important natural histories by Hans Sloane (1708) and Griffith Hughes (1750). It also served as the setting for many popular works, including a brief poem by the well-known English bard Richard Flecknoe and Richard Steele’s famous newspaper serial ‘Inkle and Yariko. Academic interest in the island’s past has also remained high since the eighteenth-century, with historians consistently drawn to Barbados’ integral role in the development of sugarcane agriculture based on enslaved African labour and the influence this had on England’s imperial mission. As B.W. Higman explains: the colonial history of the Caribbean is commonly characterized by the intimate relationship of sugar and slavery…and the defining moment of that relationship is located in the sugar revolution, beginning in Barbados in the middle of the seventeenth century. It is the sugar revolution above all which has come to represent the vital watershed, starkly separating the history of the islands from that of the mainland, not merely in terms of agricultural economy, but in almost every area of life, from demography, to social structure, wealth, settlement patterns, culture, and politics. Higman’s quotation highlights the important work on the island’s past that has already been completed by modern historians, especially in regard to sugar, slavery, and their combined effects upon the economic and political relationships that dominated the planters’ lives. Richard Dunn, for example, notes that ‘we have detailed political and institutional histories of the several Caribbean colonies in the seventeenth centuries and excellent studies of Stuart colonial policy in the West Indies.’ Books such as those written by Dunn, Vincent Harlow, Gary Puckrein, Larry Gragg, Noel Deerr, Richard Pares, Carl and Roberta Bridenbaugh, Richard Sheridan, Russell Menard, and Hilary Beckles have successfully highlighted the importance of Barbados’ place within the sugar-producing Caribbean and have helped to contribute to the further understanding of the relationship between the development of the plantation complex, the growing power of the West Indian planter, and the forced enslavement of a large African population. Combined, these authors adequately cover most of the important events in Barbadian history, ranging from the early settlement period and the emergence of sugar to the emancipation of the enslaved in 1834. Nevertheless, gaps in the historiography still exist, leaving several significant periods of the island’s history under-analyzed and misunderstood. One such lacuna exists for the twenty-year period between 1680 and 1700, a vital two decades that represented great tragedy, violence, and change throughout the English empire from an ugly combination of rebellion, revolution, and war. These events profoundly influenced and altered the lives of the 66,000 people living on Barbados. Yet, many historians gloss over this period in favor of either the island’s early settlement period or later emancipation era. They often avoid the 1680s and 1690s by hastily contending that the two decades were a period of relative decline defined by a combination of low prices, limited supply, infertile soil, war, and disease. Historians often attempt to justify these assertions by pointing to two contemporary documents that, when read in tandem, appear to paint a dismal picture of island conditions during this era. The first of these is the 1680 census, a compilation of demographic statistics collected by each parish vestry at the request of Governor Sir Jonathon Atkins in 1679. Under intense suspicion from the Lords of Trade and Plantations for not following the proper protocol concerning colonial laws and for refusing to send requested information back to England, Atkins demanded the name, location, acreage, and labor force of every landowner living on the island. He also collected specific accounts of the militia, island fortifications, and emigration, while receiving tallies of the Anglican baptisms, deaths, and marriages that occurred in each parish. Many historians use these demographic statistics to draw important conclusions about Barbados, including the continuing consolidation of the island’s limited acreage by the elite, the wealthy’s dominance of politics and the military, the lopsided burial to baptism rate, the high number of white emigrants, and the near-complete replacement of indentured servants by enslaved Africans.