Quasi T Tests
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Learning and Transfer of Training: a Quasi-Experiment with Longitudinal Design
Resumo Esse artigo teve como objetivo mensurar a aprendizagem em três seções de treinamento realizadas em uma organização pública federal brasileira. Trata-se de um quase experimento longitudinal, com três ondas, sendo o pré-teste (antes do treinamento), o pós-teste 1 (imediatamente após o término do treinamento) e o pós-teste 2 (após três mese
Psico-USF. Publicado em: 10/10/2019
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2. Crashworthiness Analysis and Evaluation of Fuselage Section with Sub-floor Composite Sinusoidal Specimens
Abstract Crashworthiness is one of the main concerns in civil aviation safety particularly with regard to the increasing ratio of carbon fiber reinforced plastic (CFRP) in aircraft primary structures. In order to generate dates for model validations, the mechanical properties of T700/3234 were obtained by material performance tests, and energy-absorbing resu
Lat. Am. j. solids struct.. Publicado em: 2016-06
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3. Using Common Features to Understand the Behavior of Metal-Commodity Prices and Forecast them at Different Horizons
The objective of this article is to study (understand and forecast) spot metal price levels and changes at monthly, quarterly, and annual horizons. The data to be used consists of metal-commodity prices in a monthly frequency from 1957 to 2012 from the International Financial Statistics of the IMF on individual metal series. We will also employ the (relative
Escola de Pós-Graduação em Economia da FGV. Publicado em: 03/01/2013
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4. Experimental study of impact energy absorption in aluminium square tubes with thermal triggers
This study presents an approach for the improvement of crashworthiness properties of aluminium tubular structures using initiators introduced through localized heating. The main objective of this approach is to improve the ability to absorb impact energy in a progressive and controlled manner by a local modification of material properties. Through a localize
Materials Research. Publicado em: 03/02/2012
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5. ANÁLISE ESPACIAL DA MORTALIDADE POR DOENÇAS DO APARELHO CIRCULATÓRIO NAS REGIÕES URBANAS DE JUIZ DE FORA - MG
The cardiovascular diseases (CVD) are the main causes of death in Juiz de Fora, in Brazil and in most countries. The spatial distribution of CVD mortality in large cities is not homogeneous: regions with worse social conditions have bigger mortality rates. Premature CVD mortality is also related to socioeconomic conditions of neighborhood. The techniques of
Publicado em: 2009
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6. Essays on heteroskedasticity
Esta tese de doutorado trata da realizaÃÃo de inferÃncias no modelo de regressÃo linear sob heteroscedasticidade de forma desconhecida. No primeiro capÃtulo, nÃs desenvolvemos estimadores intervalares que sÃo robustos à presenÃa de heteroscedasticidade. Esses estimadores sÃo baseados em estimadores consistentes de matrizes de covariÃncias proposto
Publicado em: 2008
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7. AvaliaÃÃo de volumes, capacidade e forÃa muscular respiratÃria em pacientes submetidos à cirurgia abdominal alta eletiva
The postoperative pulmonary complications are common after upper abdominal surgery. The respiratory physiotherapy has been used in the prevention and treatment of these complications. The aim of this study was to verify the effects of incentive spirometry and sustained deep breathing in the pulmonary function in patients who have undergone upper elective abd
Publicado em: 2006
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8. VALORES CRÃTICOS AJUSTADOS PARA INFERÃNCIA SOB HETEROSCEDASTICIDADE DE FORMA DESCONHECIDA
InferÃncia em modelos lineares de regressÃo na presenÃa de heteroscedasticidade de forma desconhecida à usualmente realizada atravÃs do uso do estimador de mÃnimos quadrados ordinÃrios do vetor de parÃmetros de regressÃo juntamente com um estimador consistente de sua matriz de covariÃncias. O estimador mais comumente usado à o proposto por Halbert
Publicado em: 2005
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9. Analyses of frameshifting at UUU-pyrimidine sites.
Others have recently shown that the UUU phenylalanine codon is highly frameshift-prone in the 3'(rightward) direction at pyrimidine 3'contexts. Here, several approaches are used to analyze frameshifting at such sites. The four permutations of the UUU/C (phenylalanine) and CGG/U (arginine) codon pairs were examined because they vary greatly in their expected