The role of anomalous SST and surface fluxes over the Southeastern North Atlantic in the explosive development of windstorm Xynthia

In late February 2010 the extraordinary windstorm Xynthia crossed over Southwestern and Central Europe and caused severe damage, affecting particularly the Spanish and French Atlantic coasts. The storm was embedded in uncommon large-scale atmospheric and boundary conditions prior to and during its development, namely enhanced sea surface temperatures (SST) within the low-level entrainment zone of air masses, an unusual southerly position of the polar jet stream, and a remarkable split jet structure in the upper troposphere. To analyse the processes that led to the rapid intensification of this exceptional storm originating close to the subtropics (30°N), the sensitivity of the cyclone intensification to latent heat release is determined using the regional climate model COSMO-CLM forced with ERA-Interim data. A control simulation with observed SST shows that moist and warm air masses originating from the subtropical North Atlantic were involved in the cyclogenesis process and led to the formation of a vertical tower with high values of potential vorticity (PV). Sensitivity studies with reduced SST or increased laminar boundary roughness for heat led to reduced surface latent heat fluxes. This induced both a weaker and partly retarded development of the cyclone and a weakening of the PV-tower together with reduced diabatic heating rates, particularly at lower and mid levels. We infer that diabatic processes played a crucial role during the phase of rapid deepening of Xynthia and thus to its intensity over the Southeastern North Atlantic. We suggest that windstorms like Xynthia may occur more frequently under future climate conditions due to the warming SSTs and potentially enhanced latent heat release, thus increasing the windstorm risk for Southwestern Europe.

Addressing rural social exclusion through African social purpose ventures

Objectives. The overarching aim of this paper is to consider the relationship between social entrepreneurship and rural development, and as a mechanism to address social exclusion in the Global South, with specific reference to Sub-Saharan Africa. Drawing upon a number of case examples of social purpose ventures in Kenya, Mozambique and Zambia the objectives of this paper are: - To provide a synthesis of existing literature on the interaction between social purpose ventures and rural BoP communities in the developing world; - To explore extant social exclusion literature including economic, political and international development dimensions; and - To analyse the case study examples to consider the channels through which social purpose ventures contribute to tackling social exclusion amongst the rural BoP. Prior Work. There is growing interest in the role that social enterprises and wider social purpose ventures can play in sustainable development in the Global South. In many developing countries the majority of the population still reside in rural areas with these areas often particularly marginalised and underdeveloped. Previous studies have provided anecdotal examples where social purpose ventures have the potential to provide innovative solutions to the development challenges faced by rural households and communities. Yet research in this area remains relatively nascent and fragmented. In depth empirical studies examining social purpose ventures and rural development in the Global South are furthermore limited. Approach. Data was collected during in-depth case study research with social purpose ventures in Zambia, Kenya and Mozambique. Cases were selected through a purposive sample with access negotiated to rural BoP communities through gatekeeper partners. Qualitative research methods were primarily employed including interviews, stakeholder focus groups and observational research. Results Six channels through which social purpose ventures contribute to tackling social exclusion amongst rural BoP communities are identified. These include ventures with the BoP as employees, producers, consumers, entrepreneurs, service users and shareholders. A number of shared characteristics for successful social purpose ventures are also outlined. Finally implications for policy, practice and research are discussed. Implications. Despite the increasing attention being given to social purpose ventures as a mechanism for global sustainable development many questions remain unanswered. Limited empirical work has been undertaken on such ventures operating in rural settings in the developing world, particularly Africa. The paper will add to academic and practitioner knowledge in this area especially in relation to up-scaling impact, the long term sustainability and viability of social purpose enterprise ventures, and effective supporting interventions. This paper adds to knowledge in the field of social purpose venturing in the developing world. It identifies various channels through which such ventures help tackle rural social exclusion and also factors influencing their success. The paper provides insights for practitioners and policy makers, particularly in relation to facilitating successful social purpose venturing. Value This paper will provide insights relevant to both academic and practitioner audiences. It addresses a subject area and geographical region that has received limited research attention to date. The paper adds to knowledge on social purpose ventures and social entrepreneurship in Africa and wider developing world environments, and contributes to debates on its potential and present limitations as a vehicle for development and societal transformation

New models of North West European Holocene palaeogeography and inundation

This paper presents new 500 year interval palaeogeographic models for Britain, Ireland and the North West French coast from 11000 cal. BP to present. These models are used to calculate the varying rates of inundation for different geographical zones over the study period. This allows for consideration of the differential impact that Holocene sea-level rise had across space and time, and on past societies. In turn, consideration of the limitations of the models helps to foreground profitable areas for future research.

Vegetation and soils feedbacks on the response of the African monsoon response to orbital forcing in early to middle Holocene

Fossil pollen, ancient lake sediments and archaeological evidence from Africa indicate that the Sahel and Sahara regions were considerably wetter than today during the early to middle Holocene period, about 12,000 to 5,000 years ago1–4. Vegetation associated with the modern Sahara/Sahel boundary was about 5° farther north, and there were more and larger lakes between 15 and 30° N. Simulations with climate models have shown that these wetter conditions were probably caused by changes in Earth's orbital parameters that increased the amplitude of the seasonal cycle of solar radiation in the Northern Hemisphere, enhanced the land-ocean temperature contrast, and thereby strengthened the African summer monsoon5–7. However, these simulations underestimated the consequent monsoon enhancement as inferred from palaeorecords4. Here we use a climate model to show that changes in vegetation and soil may have increased the climate response to orbital forcing. We find that replacing today's orbital forcing with that of the mid-Holocene increases summer precipitation by 12% between 15 and 22° N. Replacing desert with grassland, and desert soil with more loamy soil, further enhances the summer precipitation (by 6 and 10% respectively), giving a total precipitation increase of 28%. When the simulated climate changes are applied to a biome model, vegetation becomes established north of the current Sahara/Sahel boundary, thereby shrinking the area of the Sahara by 11% owing to orbital forcing alone, and by 20% owing to the combined influence of orbital forcing and the prescribed vegetation and soil changes. The inclusion of the vegetation and soil feedbacks thus brings the model simulations and palaeovegetation observations into closer agreement.

Gender, childhood and children’s literature: the CIRCL approach

This paper explores the unique approach to childhood and children’s literature of the research and teaching of the ‘Graduate Centre for International Research in Childhood: Literature, Culture, Media (CIRCL)’. CIRCL follows in its work the arguments of UK critical theorist Jacqueline Rose in her seminal 1984 book The case of Peter Pan or the impossibility of children’s fiction. Rose’s work has been widely and routinely referenced in Children’s Literature studies particularly, but CIRCL interprets her arguments as having quite different implications than those usually assumed. Rose is generally attributed with having pointed out that ‘childhood’ is not one, homogenous category, but that childhood is divided by gender, race, and ethnic, political and religious (and so on) identities. But for CIRCL this is only a first step in Rose’s arguments and certainly one not unique to her work anyway: the perception of various cultural and historical childhoods is widely held. Instead, my paper explores how Rose’s arguments are centrally about how ‘childhood’ itself cannot be maintained in the face of division, a division, moreover, which operates inevitably at every level, and which derives from Rose’s interpretation of psychoanalysis as formulated by Sigmund Freud, which Rose derives in turn from her readings of the interpretations of Freud by French analyst Jacques Lacan and French critical theorist Jacques Derrida. Finally, my paper argues how Rose’s position is about any ‘identity’, including gender and that this allies her work closely to that of the famous gender theorist Judith Butler, whose arguments are often (mis) understood in the same ways as those of Rose.

Neoproterozoic geodynamic evolution of SW-Gondwana: a southern African perspective

Our current understanding of the tectonic history of the principal Pan-African orogenic belts in southwestern Africa, reaching from the West Congo Belt in the north to the Lufilian/Zambezi, Kaoko, Damara, Gariep and finally the Saldania Belt in the south, is briefly summarized. On that basis, possible links with tectono-stratigraphic units and major structures on the eastern side of the Rio de la Plata Craton are suggested, and a revised geodynamic model for the amalgamation of SW-Gondwana is proposed. The Rio de la Plata and Kalahari Cratons are considered to have become juxtaposed already by the end of the Mesoproterozoic. Early Neoproterozoic rifting led to the fragmentation of the northwestern (in today`s coordinates) Kalahari Craton and the splitting off of several small cratonic blocks. The largest of these ex-Kalahari cratonic fragments is probably the Angola Block. Smaller fragments include the Luis Alves and Curitiba microplates in eastern Brazil, several basement inliers within the Damara Belt, and an elongate fragment off the western margin, named Arachania. The main suture between the Kalahari and the Congo-So Francisco Cratons is suspected to be hidden beneath younger cover between the West Congo Belt and the Lufilian/Zambezi Belts and probably continues westwards via the Cabo Frio Terrane into the Goias magmatic arc along the Brasilia Belt. Many of the rift grabens that separated the various former Kalahari cratonic fragments did not evolve into oceanic basins, such as the Northern Nosib Rift in the Damara Belt and the Gariep rift basin. Following latest Cryogenian/early Ediacaran closure of the Brazilides Ocean between the Rio de la Plata Craton and the westernmost fragment of the Kalahari Craton, the latter, Arachania, became the locus of a more than 1,000-km-long continental magmatic arc, the Cuchilla Dionisio-Pelotas Arc. A correspondingly long back-arc basin (Marmora Basin) on the eastern flank of that arc is recognized, remnants of which are found in the Marmora Terrane-the largest accumulation of oceanic crustal material known from any of the Pan-African orogenic belts in the region. Corresponding foredeep deposits that emerged from the late Ediacaran closure of this back-arc basin are well preserved in the southern areas, i.e. the Punta del Este Terrane, the Marmora Terrane and the Tygerberg Terrane. Further to the north, present erosion levels correspond with much deeper crustal sections and comparable deposits are not preserved anymore. Closure of the Brazilides Ocean, and in consequence of the Marmora back-arc basin, resulted from a change in the Rio de la Plata plate motion when the Iapetus Ocean opened between the latter and Laurentia towards the end of the Ediacaran. Later break-up of Gondwana and opening of the modern South Atlantic would have followed largely along the axis of the Marmora back-arc basin and not along major continental sutures.

Microbial diversity associated with algae, ascidians and sponges from the north coast of Sao Paulo state, Brazil

Little is known about the microbial diversity associated with marine macroorganisms, despite the vital role microorganisms may play in marine ecosystems. The aim of the present study was to investigate the diversity of bacteria and fungi isolated from eight marine invertebrate and one algae samples. Data derived from ARDRA and sequencing analyses allowed the identification of marine-derived microorganisms isolated from those samples. Microbial strains identified up to the genus level revealed 144 distinct ribotypes out of 256 fungal strains and 158 distinct ribotypes out of 181 bacterial strains. Filamentous fungi were distributed among 24 different genera belonging to Ascomycota, Zygomycota and Basidiomycota, some of which had never been reported in the literature as marine invertebrate-inhabiting fungi (Pestalotiopsis, Xylaria, Botrysphaeria and Cunnninghamella). Bacterial isolates were affiliated to 41 different genera, being Bacillus, Ruegeria, Micrococcus, Pseudovibrio and Staphylococcus the most abundant ones. Results revealed an unexpected high microbial diversity associated to the macroorganisms which have been collected and suggested the selection of certain microbial taxonomic groups according to the host. The combined data gathered from this investigation contribute to broaden the knowledge of microbial diversity associated to marine macroorganisms, including as a promising source for the discovery of new natural products. (C) 2009 Elsevier GmbH. All rights reserved.

Literary love making in Nicholas Sparks novels: Finding the balance between the writer’s life and the writer’s work in bestselling Romantic Literature

For almost a decade now Nicholas Sparks has been writing love stories. Not only has he been publishing his stories, but they have received high acclaim in each of their installments. Several of his novels have been made into major motion pictures and increased his popularity quite significantly. His status as a successful romantic fiction writer is undeniable, but the question is, why? What is it about Nicholas Sparks that makes his novels so engaging, and personally, what do I need to do as an aspiring novelist to try and acquire the same literary status? Sparks’s novels reach readers at a number of different levels, thus giving them appeal no matter the intellectual intent of the reader. Theoretically, Sparks engages reader response techniques as well as formalist processes such as “habitualization” and “defamiliarization,” while also developing engaging plot lines that represent many of the experiences from his own life. His writing is not only academically redeemable, but it is also creatively stimulating; between the two, Sparks represents the thunder and lightning combination all writers strive for while trying to achieve literary success. This project also offers a creative element in which I attempt to exemplify many of the traits discussed in the analytical sections of this document, by recreating them in a creative, fictitious fashion. Themes such as: motion versus stasis, life versus death, and the ordinary versus the extraordinary all exist within the narrative structure of my short story “Trip to Fall.” Besides these thematic elements, the creative section strives to represent the balance Sparks achieves between the experiences of his own life and the fictitious world he creates. Overall, this project delves into the life of Nicholas Sparks to better understand the inspiration for his writing at the level of form as well as content, while also paying tribute to Sparks’s style through a representation of his work in my own words.

Dwelling in possibility: aestheticizing identity in African American women's fiction

African American women writers define aesthetics through their negotiation of identity in the politicized loci of space, place and voice. In the balkanization of such issues of voice and space, we can see the ways that the emergent selfis embodied and aestheticized in literature. To do so creates a more tactile and "artfull" representation of the self rather than a representation of identity as a mere abstract concept. To use written language to express the self is to carry processes of selfdefinition for black women into the realm of creative production. For women, especially black women, who are a politically and socially compromised element of society, the written word is a way of expressing the politically and the socially critical voice that is suppressed in other forums of expression. Using theories on "writing in difference" as a skeleton key, this project seeks to outline some of the ways that black women writers use aesthetic elements in their art to express the potential for self-examination, discovery, and emancipation.

Sexual blinging of women : Alice Walker's african character tashi and issue of female genital cutting

This thesis provides a reading of the different forms of representation that can be attributed to the character Tashi, the protagonist of the novel Possessing the Secret of Joy (1992), written by the African American writer Alice Walker. Before this work Tashi had already appeared in two previous novels by Walker, first, in The Color Purple (1982) and then, as a mention, in The Temple of My Familiar (1989). With Tashi, the author introduces the issue of female circumcision, a ritual Tashi submits herself to at the beginning of her adult life. The focus of observation lies in the ways in which the author’s anger is transformed into a means of creative representation. Walker uses her novel Possessing the Secret of Joy openly as a political instrument so that the expression “female mutilation” (term used by the author) receives ample attention from the media and critics in general. The aim of this investigation is to evaluate to what extent Walker’s social engagement contributes to the development of her work and to what extent it undermines it. For the analysis of the different issues related to “female genital cutting”, the term I use in this thesis, the works of feminist critics and writers such as Ellen Gruenbaum, Lightfoot-Klein, Nancy Hartsock, Linda Nicholson, Efrat Tseëlon and the Egyptian writer and doctor Nawal El Saadawi will be consulted. I hope that this thesis can contribute as an observation about Alice Walker’s use of her social engagement in the creation of her fictional world.

Entry strategies on an emerging market: Brazil: case studies of French cosmetics companies in Brazil

Este trabalho envolve as estrategias de entrada sobre um mercado emergente, o mercado brasileiro. Os estudos de casos que apoiam o assunto são de empresas francesas do setor de cosméticos. Uma revisão da literatura sobre o assunto sera comparada com os resultados dos estudos de caso. Isso para conduzir numa observação do estado atual das caractéristicos de instalação no mercado brasileiro deste setor para empresas estrangeiras de tamanho médio. O estudo da literatura que já existe sobre o assunto se concentra sobre varias problemáticas conectadas com a problemática geral: as razões para internacionalizar, o modo de entrada, os obstáculos encontrados, as estrategias especificais e as adaptações do marketing mix. Depois este trabalho se concentra sobre tres empresas francesas representativas das problematicas atuais do setor : Norlessi, LaboBio e Plains Cosmetics. Os estudos de caso são sustentados por entrevistas e coleção de dados de varios origens, descrevedo mas precisamente na parte de methodologia. Depois será feito uma cross-analysis tentando comparar as conclusões do estudo empirico e do estudo literário. As conclusões finais tem como objetivo de ser uma observação objetiva do raciocinio das empresas consideradas sobre as problemáticas escolhidas.

The Brazilian and the french private equity sectors from 2006 to present: a comparative analysis

Private equity, ou o ato de fundos ou investidores de investir em empresas não cotadas em bolsa pública, assumiu uma importância crescente no mundo financeiro nos últimos anos. De fato, enquanto o surgimento de um setor de private equity (PE) tem sido um grande fenômeno em mercados emergentes desde meados dos anos 2000, a crise financeira mundial enfraqueceu private equity no mundo desenvolvido. Assim, esta pesquisa vai se concentrar em dois países com dinâmicas supostamente muito diferentes em relação a este sector: França e Brasil. O objetivo será o de discernir padrões gerais de comportamento em ambos os sectores de PE durante todo o período compreendido 2006-2013, e tentar determinar em que medida eles são comparáveis. Utilizando a literatura como fonte conceitual para o quadro comparativo a ser desenvolvido, será analisado se as condições do mercado e do ambiente institucional evoluíram durante o período estudado na França e no Brasil, se comparar, e se eles impactaram o nível de atividade de private equity - oferta e demanda de fundos - em ambos os países. Para identificar esses padrões, a pesquisa contará com uma análise de dados exploratória qualitativa, com base em um quadro dos determinantes do setor de PE identificados e retirados da literatura acadêmica. Esta pesquisa trazera sua contribuição para o trabalho acadêmico existente sobre private equity, graças à sua natureza comparativa e para a sua conclusão sobre a relevância dos determinantes acima mencionados sobre a atividade de private equity na França e no Brasil.

French wine and the Brazilian consumer

Em um mercado internacional de vinhos cada dia mais competitivo, exportadores franceses estão procurando novos mercados para expandir suas atividades. Nesse cenário o Brasil aparece como um mercado potencial enorme e, por isso, é necessário aos empreendedores o perfeito entendimento das dinâmicas de mercado, a fim de moldar estratégias de marketing eficientes. A primeira etapa é entender o comportamento do consumidor final, a fim de oferecer o produto certo de maneira certa. Essa dissertação tem por objeto a análise dos hábitos de consumo, bem como a percepção do consumidor sobre os vinhos franceses no mercado do vinho brasileiro. A análise será efetuada em função do comportamento do consumidor; portanto, uma atenção especial será dada à demografia, aos hábitos de consumo e as tendências do mercado para os produtos vitivinícolas. Mais precisamente, a investigação tentará identificar diferentes grupos de consumidores com padrões semelhantes, baseados em dados demográficos, consumo atual ou potencial de vinho, e sua percepção particular sobre o vinho francês. A idéia por trás desse processo é a construção de um quadro que pode ajudar a desenvolver estratégias de marketing para profissionais do mercado de vinhos franceses no Brasil, fornecendo a potenciais exportadores uma melhor compreensão sobre como direcionar o seu posicionamento e atingir metas de forma eficaz. A realização desta dissertação foi um desafio importante porque o comportamento do consumidor de vinho no Brasil nao foi estudado inteiramente. É muito difícil hoje para exportadores franceses que desejam compreender melhor o consumidor brasileiro de vinho encontrar qualquer estudo ou análise. A fim de fazer isso, a literatura sobre o mercado do vinho brasileiro foi utilizada (especificidades dos produtos, produção, dados de consumo, etc.). A literatura também inclui os fatores de decisão que influenciam os consumidores nas suas decisões de compra, o que é uma questão muito complexa quando se trata de vinho. Finalmente, a literatura sobre as estratégias de marketing foi revista, a fim de avaliar o tanto o impacto potencial como a relevância para o mercado brasileiro. A segunda etapa do estudo foi a apresentação de questionários a consumidores brasileiros e a análise, com o intuito de determinar as preferências dos consumidores e compreender a percepção do vinho francês. O objetivo foi identificar potenciais grupos alvos para os produtores franceses de vinho.

Morphological studies on the heart ventricle of African catfish (Clarias gariepinus)

The histological and ultrastructural characteristics of the heart ventricle in Clarias gariepinus (African catfish) has been studied by light microscopy and transmission electron microscopy. The ventricle of the heart has a saccular shape and the myocardial wall consists of an outer thin compact myocardium and an inner well-developed spongy myocardium. The myocardial layer has small myocytes, interstitial spaces and blood vessels. The myocytes are the major constituents of the ventricular wall. They are long cells, with large nuclei, and predominantly euchromatin. The sarcoplasmic reticulum of the ventricular myocytes consists of a network of tubules and subsarcolemmal cisternae oriented mainly along the longitudinal axis of the myofibrils. In contrast to the ventricular structure of other fish species described in the literature (Greer-Walker et al., 1985 Santer, 1985 Sanchez-Quintana et al., 1995, 1996), the African catfish, a freshwater sedentary fish recently introduced in neotropical climatic environments, showed a saccular ventricle that consisted of two muscle layers, a thin compact layer with large vessels and a developed spongy layer. The ultrastructure of the ventricular myocardium of C.gariepinus is similar to that of other teleosts, inclusive that of fish with other swimming habits.

Phylogeography of Batrachospermum macrosporum (Batrachospermales, Rhodophyta) from North and South America

Phylogeographic trends in Batrachospermum macrosporum Mont. were investigated using the mitochondrial intergenic spacer between the cytochrome oxidase subunit 2 and 3 genes (cox2-3). A total of 11 stream segments were sampled with seven in the coastal plain of North America and four in tropical areas of South America. Fifteen thalli were sampled from seven streams, 14 thalli from two streams, and eight thalli from two streams. There were 16 haplotypes detected using 149 individuals. of the eight haplotypes from locations in North America, all were 334 base pairs (bp) in length, and of those from South America, five were 344 bp, and three were 348 bp. Two individual networks were produced: one for the haplotypes from North America and another for those from South America, and these could not be joined due to the large number of base pair differences. This split between haplotypes from North and South America was confirmed with sequence data of the rbcL gene. There was very little genetic variation among the haplotypes from the North American locations, leading us to hypothesize that these are fairly recent colonization events along the coastal plain. In contrast, there was high variation among haplotypes from South America, and it would appear that the Amazon serves as a center of diversity. We detected considerable variation in haplotypes among streams, but frequently, a single haplotype in an individual stream segment, which is consistent with data from previous studies of other batrachospermalean taxa, may suggest a single colonization event per stream.