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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Seletividade da rede-de-espera utilizada na captura da sardinha-bandeira, Opisthonema oglinum (Lesueur, 1818) / Selectivity of drift nets used for catching the Atlantic thread-herring, Opisthonema oglinum (Lesueur, 1818)

SebastiÃo Ribeiro DÂAlva Teixeira 20 March 2015 (has links)
CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior / A sardinha-bandeira, Opisthonema oglinum, pertence à famÃlia Clupeidae da ordem Clupeiformes sendo uma das cinco espÃcies do gÃnero Opisthonema. No Estado do Cearà sua captura se estende ao longo de toda a costa, durante todo o ano, com as melhores pescarias ocorrendo entre maio e dezembro. O presente trabalho teve como objetivo determinar a estrutura da populaÃÃo, a relaÃÃo peso/comprimento da sardinha-bandeira e a seletividade das redes-de-espera utilizadas na sua captura na Praia da Caponga, municÃpio de Cascavel, CearÃ, Brasil. Os dados de comprimento total (cm) e peso individual (g) foram obtidos de dois grupos, cada um com 780 indivÃduos, capturados por redes-de-espera com malhas de 5 cm e 6 cm entre nÃs opostos, no perÃodo de agosto a outubro de 2014. Esses dados foram descritos em histogramas de frequÃncia de comprimento e peso, sendo mais representativas as classes de 21,6 cm (24,23%) e de 87,0 g (32,31%) para a malha de 5 cm e de 25,7 cm (23,08%) e de 117,9 g (26,03%), para a de 6 cm. Quando todos os indivÃduos foram reunidos em um Ãnico grupo (1.560), sem distinÃÃo do tamanho da malha, as classes mais representativas foram a de 23,0 cm de comprimento (18,59%) e a de 105,5 g de peso (20,38%). As equaÃÃes que representaram as relaÃÃes peso/comprimento foram as seguintes: y=0,016 x^2,7636 (780 indivÃduos capturados com a malha de 5 cm); y=0,031 x^2,5635 (780 indivÃduos capturados com a malha de 6 cm); e y=0,021 x^2,6828 (1.560 indivÃduos). Para o estudo da seletividade foram analisados todos os exemplares de sardinha-bandeira (1.560) capturados com as redes-de-espera de malha de 5 cm e 6 cm. O comprimento mÃdio de seleÃÃo foi de 23,7 cm para a malha de 5 cm e de 28,5 cm para a de 6 cm. A amplitude de seleÃÃo foi de 23,7  7,9 cm e de 28,5  7,9 cm para as malhas de 5 cm e 6 cm, respectivamente. As equaÃÃes das curvas de seleÃÃo das redes-de-espera para os dois tamanhos de malha foram obtidas, e a probabilidade de capturar indivÃduos com comprimento inferior ao mÃnimo, estabelecido em 15 cm, foi muito baixa e correspondeu a 1,32% e 0,03% para as malhas de 5 cm e de 6 cm, respectivamente. Esta informaÃÃo à de grande valia para a manutenÃÃo do estoque da sardinha-bandeira capturada na Praia da Caponga, CearÃ. / Atlantic thread-herring, Opisthonema oglinum, belongs to the family Clupeidae and to the order Clupeiformes. It is one of the five species of the genus Opisthonema. In the state of CearÃ, it is caught along the entire coast, throughout the year, with the best fisheries occurring between May and December. This work aimed to study the population structure, the length/weight relationships of the Atlantic thread-herring and to determine gear selectivity of drift nets used for catching them in Caponga Beach, Cascavel, CearÃ, Brazil. Data of total length (cm) and individual weight (g) were obtained from two groups, each with 780 individuals captured by drift nets with meshes of 5 cm and 6 cm, from August to October 2014. These data are showed as histograms. The most representative classes of length and weight were 21.6 cm (24.23%) and 87.0 g (32.31%) for 5 cm mesh, while for the 6 cm mesh, the main classes were 25.7 cm (23.08%) and 117.9 g (26.03%). When all data was combined into a single group (1,560), without the mesh size distinction, the most representative classes were 23.0 cm long (18.59%) and 105.5 g in weight (20.38%). The equations representing the weight/length ratios were as follows: y=0.016 x^2.7636 (780 individuals captured with a mesh of 5 cm); y=0.031 x^2.5635 (780 individuals caught with a mesh of 6 cm); and y=0.021 x^2.6828 (1,560 individuals). To study the selectivity, 1,560 Atlantic thread-herring specimens captured with drift nets of 5 cm and 6 cm were analyzed. The selection mean length was 23.7 cm for 5 cm mesh and 28.5 cm for 6 cm mesh. The range of selection was 23.7  7.9 cm and 28.5  7.9 cm for 5 cm mesh and 6 cm mesh, respectively. The equations of the selection curves for the two mesh sizes were obtained, and the probability of capturing individuals with length less than the established minimum of 15 cm was very low, amounting to 1.32% and 0.03% for the meshes of 5 cm and 6 cm, respectively. This information is of great value to maintain the stock of Atlantic thread-herring in Caponga Beach, CearÃ.
12

AÃÃes afirmativas para a populaÃÃo negra nos Centros Federais de EducaÃÃo TecnolÃgica / Affirmative actions for the Black Population in the Federal Centers of Technological Education

Iraneide Soares da Silva 26 March 2009 (has links)
Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico / Pesquisar as polÃticas de aÃÃes afirmativas para a populaÃÃo negra na educaÃÃo tÃcnica e tecnolÃgica foi esse o fio condutor deste trabalho. Pautei-me na Lei de Diretrizes a Bases da EducaÃÃo Nacional/LDBN, especialmente os artigos 26, 26A e 79B, que tratam da histÃria e cultura afro-brasileira e dos povos africanos nos currÃculos da educaÃÃo bÃsica. A especificidade da pesquisa se dà quando ouso penetrar a educaÃÃo tÃcnica e tecnolÃgica e as demandas do mundo do trabalho a fim de identificar a inserÃÃo da populaÃÃo negra nessa seara. Parto de um estudo de caso no Centro Federal de EducaÃÃo TecnolÃgica do Cearà com o propÃsito de identificar a implementaÃÃo dos jà mencionados artigos da LDB naquele centro de educaÃÃo, e mais, no caso de haver polÃticas dessa natureza, verificar qual o impacto das mesmas no referido centro. Naquela escola fui recebida durante um ano por discentes, docentes e gestores observando, dialogando, entrevistando, analisando, questionando, investigando. Nesse passeio pela historia do Brasil dos que trabalham, constroem e foram, sÃo invisÃveis, invisibilizados e, tambÃm dos que nunca trabalharam nem construÃram e estÃo Ãs vistas da histÃria encontrei de bacharÃis a mulheres e homens vendendo quitutes para ajudar a construir esta naÃÃo. Vi as teorias eurocÃntricas nortearem a educaÃÃo dos que là nunca pisou e de là nunca receberam nada. O resultado mostra que as polÃticas pÃblicas de aÃÃes afirmativas tÃo almejadas pelo povo negro deste paÃs ainda està distante da realidade daquela escola. / Search affirmative action for black people in technical and technological education, that was the leitmotif of this work. Guided me in the Law of the Guidelines of National Education Bases / LDBN, especially Articles 26, 26A and 79B, which deal with the history and culture african-Brazilian and African peoples in the curricula of basic education. The specificity of the research is done when I dare to enter technical and technological education and the demands of the world of work to identify the inclusion of black people in Seara. Delivery of a case study in the Federal Center of Technological Education of Cearà for the purpose of identifying the implementation of the aforementioned articles of the LDB in center of education, and more in the event of such policies, which determine the impact of the same that center. That was received during a school year for students, teachers and administrators looking, talking, interviewing, analyzing, questioning, investigating. In this tour through the history of Brazil in which they work, and were built, they are invisible, invisibilizados and also those who never worked and are not built to view the history of bacharÃis found the women and men selling quitutes to help build this nation. I saw the Eurocentric theories guided the education of that I never stepped in there and never received anything. The result shows that the public policies of affirmative action as desired by the black people of this country is still far from the reality of school.

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