• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 2
  • Tagged with
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 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.
1

Proje??es e tend?ncias da mortalidade por c?ncer de pulm?o, traqueia e br?nquios no Brasil

Barbosa, Maria Helena Pires Ara?jo 29 August 2016 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-02-22T19:21:57Z No. of bitstreams: 1 MariaHelenaPiresAraujoBarbosa_DISSERT.pdf: 2050740 bytes, checksum: 108615443190dfa3580c90df005ca47f (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-03-07T00:11:58Z (GMT) No. of bitstreams: 1 MariaHelenaPiresAraujoBarbosa_DISSERT.pdf: 2050740 bytes, checksum: 108615443190dfa3580c90df005ca47f (MD5) / Made available in DSpace on 2017-03-07T00:11:58Z (GMT). No. of bitstreams: 1 MariaHelenaPiresAraujoBarbosa_DISSERT.pdf: 2050740 bytes, checksum: 108615443190dfa3580c90df005ca47f (MD5) Previous issue date: 2016-08-29 / As neoplasias representam a segunda causa de morte no mundo. Entre elas, o c?ncer de pulm?o destaca-se como o mais comum de todos os tumores malignos e uma das principais causas de mortalidade entre homens e mulheres nos pa?ses desenvolvidos. O objetivo deste trabalho ? analisar a tend?ncia de mortalidade por c?ncer de pulm?o no per?odo de 1998 a 2012 e realizar proje??o da taxa de mortalidade at? o ano de 2032. Trata-se de um estudo ecol?gico do tipo misto que avaliou a taxa de mortalidade por c?ncer de pulm?o observando a faixa et?ria da popula??o, assim como o local de resid?ncia desses ?bitos considerando uma s?rie hist?rica de 15 anos. As proje??es de cada per?odo foram calculadas utilizando o modelo idade ? per?odo ? coorte do programa Nordpred, no software R. A an?lise de tend?ncia de mortalidade foi realizada por meio do software Joinpoint Regression Program. Foi utilizado o Annual Percentage Change (APC) para avaliar a tend?ncia de cada seguimento analisado e estimando os valores estatisticamente significativos considerando um n?vel de confian?a de 95%. Ademais, avaliou se altera??es no n?mero de mortes est?o relacionadas ? popula??o ou ao risco de desenvolver o c?ncer de pulm?o. No Brasil 2.237.346 ?bitos foram decorrentes de neoplasia no per?odo de 1? de janeiro de 1998 a 31 de dezembro de 2012 e 273.357 (12,21%) foram por c?ncer de pulm?o. A faixa et?ria com maior n?mero de ?bitos, tanto em homens quanto em mulheres, foi a compreendida pelos indiv?duos com idade maior ou igual a 60 anos. A an?lise por meio de Joinpoint apontou redu??o significativa na taxa de mortalidade padronizada para todo o territ?rio brasileiro, assim como em todas as regi?es para os homens. Para as mulheres, a regi?o Norte apresentou tend?ncia ? estabilidade com posterior joinpoint em 2015 e tend?ncia ? redu??o significativa. Mas, a an?lise revelou que tanto para o Brasil quanto para as demais regi?es, com exce??o da regi?o Norte, houve tend?ncia de aumento significativo e presen?a de joinpoint com posterior per?odo de estabilidade. Contudo, essas mudan?as em homens e mulheres estar?o relacionadas ao tamanho ou ?s mudan?as estrutura et?ria da popula??o. Conclui-se que no per?odo investigado, considerando homens e mulheres, haver? diferen?as na mortalidade por c?ncer de pulm?o no Brasil e nas regi?es brasileiras. E, entre outros fatores, essa mudan?a ter? rela??o com o tamanho e a faixa et?ria da popula??o investigada. / Neoplasms represent the second cause of death worldwide. Among them, lung cancer stands out as the most common of all malignant tumors and a major cause of death among men and women in developed countries. The aim of this study is to analyze the trend of mortality from lung cancer from 1998 to 2012 and to realize prediction of mortality by the year 2032. This is an ecological study of mixed type that evaluated the mortality rate lung cancer noting the age of the population, as well as the place of residence of these deaths considering a historical series of 15 years. The predictions of each period were calculated using the model age - period - cohort Nordpred program in software R. The mortality trend analysis was performed using the Joinpoint Regression Program software. The Annual Percentage Chance (APC) was used to assess the trend of each segment analyzed and estimating statistically significant values considering a 95% confidence level. In addition, we evaluated whether changes in the number of deaths are related to the population or the risk of developing lung cancer. In Brazil 2,237,346 deaths were due to cancer in the period from January 1 1998 to December 31, 2012 and 273,357 (12.21%) were from lung cancer. The age group with the highest number of deaths in both men and women, was understood by persons aged greater than or equal to 60 years. The analysis by Joinpoint showed significant reduction in the standardized mortality rate for the entire Brazilian territory, as well as in all regions for men. For women, the North tended to stability with subsequent joinpoint in 2015 and a significant reduction trend. But the analysis revealed that both Brazil and to other regions, except the North, there was a trend of significant increase and presence of joinpoint with subsequent period of stability. However, these changes in men and women will be related to the size or to change the age of the population. We conclude that in the period investigated, considering men and women, there will be differences in mortality from lung cancer in Brazil and the Brazilian regions. And, among other factors, this change will have regard to the size and age of the study population.
2

Previs?es de demanda para tomada de decis?es em telecomunica??es: estudo dos geradores de tr?fego multimidia na Internet e o reflexo no modelo de comunica??o peer-to-peer / Forecasting for decision making in telecommunications: the study of the multimedia traffic generators over the internet and their effects on the P2P communication standards

Costa, Paulo da 15 February 2008 (has links)
Made available in DSpace on 2016-04-04T18:31:21Z (GMT). No. of bitstreams: 1 Paulo da Costa.pdf: 1562833 bytes, checksum: 074d86d4ee46703de7c27efeee0966e5 (MD5) Previous issue date: 2008-02-15 / The Internet is one of the most important sources for content and services to which the simple user has become an important collaborator. With the bandwidth improvements in the upload and download transfer rates we realize the peer-to-peer (P2P) communications is growing fast in Brazil. The evolution of the peer-to-peer leads to a scenario where the client-server model will be replaced to a peer-to-peer model with multiple peers over the web. The purpose of this study is to report the evolution of the internet in Brazil, showing the actual scenario and making predictions considering the evolution of the technology and the use of the web in different scenarios, focusing in the peer-to-peer model. During the development of this study, some statistic methods will be used, such as the Gompertz and the linear regression methods to create predictions to be used in the decision making process. Analysis of the results according to quantitative researches done by researches institutes, provide the integration between the presented technique and the performed procedures. / A Internet ? atualmente uma das principais fontes de distribui??o de conte?dos e servi?os em ambientes abertos, da qual o usu?rio comum vem se tornando cada vez mais um importante fornecedor. Com o crescente aumento das taxas de transmiss?o para upload e download que s?o oferecidas pelas operadoras para os usu?rios comuns, ? poss?vel ter uma indica??o de que o modelo de comunica??o peer-to-peer (P2P) caminha para o crescimento. Este modelo, que j? tem sido amplamente utilizado, indica para o futuro um panorama onde o modelo cliente-servidor tende a ser superado pelo modelo peer-to-peer e com a tend?ncia da ado??o de um modelo com m?ltiplos peer-to-peer. O prop?sito deste trabalho ? analisar a evolu??o de demanda da Internet e em especial deste modelo no cen?rio brasileiro, identificando e detalhando seu panorama atual e com predi??es de como ser? em futuro pr?ximo, tomando como base par?metros de evolu??o tecnol?gica e uso da Internet em diversos cen?rios. Ser?o utilizados os m?todos estat?sticos de regress?o linear e Gompertz para gerar as previs?es de demanda como apoio para tomadas de decis?es. An?lises dos resultados com pesquisas quantitativas feitas por institutos de pesquisa fazem a integra??o entre a t?cnica apresentada e os procedimentos executados.

Page generated in 0.056 seconds