101,614 research outputs found
Letter, [Author unclear] to Paulina T. Merritt
No full textHandwritten letter to Paulina Merritt from an unknown author, October 1, 1876.
Processo de estresse em mestrandos
No full textDissertação(mestrado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas. Programa de Pós-Graduação em PsicologiaEsta pesquisa buscou identificar fatores estressores entre mestrandos que efetuavam um programa de mestrado na área de Filosofia e Ciências Humanas de uma Instituição de Ensino Superior pública, no sul do país. 54,8% dos mestrandos do Centro de Filosofia e Ciências Humanas responderam ao Inventário de Stress para Adultos de Lipp, de Marilda Novaes Lipp e a um questionário sobre estressores externos, confeccionado para essa finalidade, de acordo com variáveis retiradas da literatura sobre estresse. Os resultados demonstraram a presença de processo de estresse em 62,4% da amostra. A amostra foi composta por quase duas vezes mais mulheres do que homens, sendo uma população eminentemente de adultos jovens, e os índices mais elevados de estresse situaram-se na faixa etária de 26 a 30 anos. A incidência de estresse no sexo feminino foi superior à do sexo masculino. Constatou-se ocorrência de estresse nos mestrandos dos seis programas de mestrado pesquisados, sendo que os índices mais altos ocorreram entre os sujeitos do mestrado em Antropologia Social (73,3%) e os mais baixos entre os mestrandos de Filosofia (46,4%). Os resultados mostram que os relacionamentos estabelecidos pelos mestrandos com seus colegas e professores foram geradores de estresse, pois os índices mais elevados estão entre os alunos que consideraram insatisfatórias essas relações. O tempo para efetuar as leituras do mestrado foi considerado insuficiente pela maioria dos sujeitos e foi maior a incidência de estresse quanto mais insuficiente esse tempo. Foi verificada relação entre processo de estresse e grau de satisfação com as atividades acadêmicas. Conclui-se que nas relações estabelecidas com a família de origem e com as relações de amizade, quanto maior o grau de insatisfação maior a incidência de processo de estresse. Com relação à freqüência das atividades físicas e de lazer o índice de insatisfação também foi elevado e os sujeitos que apresentaram maior nível de insatisfação nesse aspecto apresentaram maior percentual de estresse. Quase metade dos mestrandos possui outra atividade profissional, paralela ao mestrado, e a renda mensal recebida por grande parte dos mestrandos é de até R1.000,00. Quanto mais insuficiente a renda em relação às necessidades dos mestrandos, maiores os percentuais de processo de estresse. Quanto às fases do processo de estresse constatou-se a predominância da fase de resistência com prevalência de sintomas psicológicos. A pesquisa conclui que existem índices bastante elevados de processo de estresse, podendo gerar reflexos negativos na qualidade de vida da população pesquisada
Of toothy grins and angry snarls—Open mouth displays contribute to efficiency gains in search for emotional faces
No full textHorstmann G, Lipp OV, Becker SI. Of toothy grins and angry snarls—Open mouth displays contribute to efficiency gains in search for emotional faces. Journal of Vision. 2012;12(5):7.The emotional face-in-a-crowd effect is widely cited, but its origin remains controversial, particularly with photorealistic stimuli. Recently, it has been suggested that one factor underlying the guidance of attention by a photorealistic emotional face in visual search might be the visibility of teeth, a hypothesis, however, that has not been studied systematically to date. The present experiments manipulate the visibility of teeth experimentally and orthogonally to facial emotion. Results suggest that much of the face-in-a-crowd effect with photorealistic emotional faces is due to visible teeth, and that the visibility of teeth can create a search advantage for either a happy or an angry target face when teeth visibility and facial emotion are confounded. Further analyses clarify that the teeth visibility primarily affects the speed with which neutral crowds are scanned, shedding new light on the mechanism that evokes differences in search efficiency for different emotional expressions
Space Charge in Polyethylene under AC Electric Stress using the Pulsed Electroacoustic Method
No full textThis paper reports on space charge in XLPE planar samples of approximately 220 ?m thick subjected to dc 30 kV/mm and 1 Hz, 10 Hz and 50 Hz ac 30 kVpk/mm conditions for 24 hours. Measurement of space charge was carried out using the pulsed electroacoustic (PEA) technique. In addition, experiments with higher applied electric stress of 60 kVpk/mm at 50 Hz ac condition were also conducted over an ageing period of 24 hours. In order to investigate the effect degassing on space charge distribution of samples under ac stress, both as-received and degassed were used in this study
Handwritten biographical information on Paulina T. McClung Merritt
No full textA handwritten biography of Paulina T. McClung Merritt by an unknown author, 1892.
Heterogeneous and tissue-specific regulation of effector T cell responses by IFN-gamma during Plasmodium berghei ANKA infection.
No full textIFN-γ and T cells are both required for the development of experimental cerebral malaria during Plasmodium berghei ANKA infection. Surprisingly, however, the role of IFN-γ in shaping the effector CD4(+) and CD8(+) T cell response during this infection has not been examined in detail. To address this, we have compared the effector T cell responses in wild-type and IFN-γ(-/-) mice during P. berghei ANKA infection. The expansion of splenic CD4(+) and CD8(+) T cells during P. berghei ANKA infection was unaffected by the absence of IFN-γ, but the contraction phase of the T cell response was significantly attenuated. Splenic T cell activation and effector function were essentially normal in IFN-γ(-/-) mice; however, the migration to, and accumulation of, effector CD4(+) and CD8(+) T cells in the lung, liver, and brain was altered in IFN-γ(-/-) mice. Interestingly, activation and accumulation of T cells in various nonlymphoid organs was differently affected by lack of IFN-γ, suggesting that IFN-γ influences T cell effector function to varying levels in different anatomical locations. Importantly, control of splenic T cell numbers during P. berghei ANKA infection depended on active IFN-γ-dependent environmental signals--leading to T cell apoptosis--rather than upon intrinsic alterations in T cell programming. To our knowledge, this is the first study to fully investigate the role of IFN-γ in modulating T cell function during P. berghei ANKA infection and reveals that IFN-γ is required for efficient contraction of the pool of activated T cells
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Pelevin’s Trinity in the novel “t”: author – protagonist – reader
No full textThe article attempts to interpret Pelevin's artistic strategy in the novel "T" by exploring its subject organization and addressing the key problems of the author, the protagonist, and the reader as they are seen by the researcher. The article analyzes the peculiarities of constructing the narrative reality in the novel "T", and goes on to discuss Pelevin's philosophic models of the development of the humankind, and the emergence of his new anthropology
Measuring industry-science links through inventor-author relations: A profiling method
No full textIn this pilot study we examine the performance of text-based profiling in recovering a set of validated inventor-author links. In a first step we match patents and publications solely based on their similarity in content. Next, we compare inventor and author names on the highest ranked matches for the occurrence of name matches. Finally, we compare these candidate matches with the names listed in a validated set of inventor-author names. Our text-based profile methodology performs significantly better than a random matching of patents and publications, suggesting that text-based profiling is a valuable complementary tool to the name searches used in previous studies.innovation; industry-science links; text-based profiling;
Largest known microbialites discovered in Lake Van, Turkey.
No full textMICROBIALITES are organosedimentary deposits produced by benthic microbial communities interacting with detrital or chemical sediments 1. Calcareous cyanobacterial microbialites defined as stromatolites and thrombolites were common in ancient shallow marine environments 2. Today, they are restricted to a few lacustrine and perimarine settings. This restriction may result from changes in seawater chemistry through time 3-6, particularly from alteration in supersaturation with respect to carbonate minerals 7. The largest known calcareous microbialites (several metres high) were formed in the late Precambrian 8. Here we report the discovery of enormous (approximately 40 m high) tower-like microbialites from alkaline (pH > 9.7) Lake Van, eastern Anatolia. Growth is by mats of coccoid cyanobacteria (Pleurocapsa group) permineralizing in situ with aragonite and by inorganically precipitated calcite. Certain aspects of these microbialites resemble Proterozoic marine stromatolites 9
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