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An analysis of certain psychological tests by the Spearman factor methodJorgensen, Christopher, January 1932 (has links)
Thesis (Ph. D.)--Columbia University, 1933. / Vita. Bibliography: p. 61-63.
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Sur des estimateurs et des tests non-paramétriques pour des distributions et copules conditionnellesCamirand Lemyre, Félix January 2016 (has links)
Pour modéliser un vecteur aléatoire en présence d'une co-variable, on peut d'abord faire appel à la fonction de répartition conditionnelle. En effet, cette dernière contient toute l'information ayant trait au comportement du vecteur étant donné une valeur prise par la co-variable. Il peut aussi être commode de séparer l'étude du comportement conjoint du vecteur de celle du comportement individuel de chacune de ses composantes. Pour ce faire, on utilise la copule conditionnelle, qui caractérise complètement la dépendance conditionnelle régissant les différentes associations entre les variables. Dans chacun des cas, la mise en oeuvre d'une stratégie d'estimation et d'inférence s'avère une étape essentielle à leur utilisant en pratique. Lorsqu'aucune information n'est disponible a priori quant à un choix éventuel de modèle, il devient pertinent d'opter pour des méthodes non-paramétriques.
Le premier article de cette thèse, co-écrit par Jean-François Quessy et moi-même, propose une façon de ré-échantillonner des estimateurs non-paramétriques pour des distributions conditionnelles. Cet article a été publié dans la revue Statistics and Computing. En autres choses, nous y montrons comment obtenir des intervalles de confiance pour des statistiques s'écrivant en terme de la fonction de répartition conditionnelle.
Le second article de cette thèse, co-écrit par Taoufik Bouezmarni, Jean-François Quessy et moi-même, s'affaire à étudier deux estimateurs non-paramétriques de la copule conditionnelles, proposés par Gijbels et coll. en présence de données sérielles. Cet article a été soumis dans la revue Statistics and Probability Letters. Nous identifions la distribution asymptotique de chacun de ces estimateurs pour des données mélangeantes.
Le troisième article de cette thèse, co-écrit par Taoufik Bouezmarni, Jean-François Quessy et moi-même, propose une nouvelle façon d'étudier les relations de causalité entre deux séries chronologiques. Cet article a été soumis dans la revue Electronic Journal of Statistics. Dans cet article, nous utilisons la copule conditionnelle pour caractériser une version locale de la causalité au sens de Granger. Puis, nous proposons des mesures de causalité basées sur la copule conditionnelle.
Le quatrième article de cette thèse, co-écrit par Taoufik Bouezmarni, Anouar El Ghouch et moi-même, propose une méthode qui permette d'estimer adéquatement la copule conditionnelle en présence de données incomplètes. Cet article a été soumis dans la revue Scandinavian Journal of Statistics. Les propriétés asymptotiques de l'estimateur proposé y sont aussi étudiées.
Finalement, la dernière partie de cette thèse contient un travail inédit, qui porte sur la mise en oeuvre de tests statistiques permettant de déterminer si deux copules conditionnelles sont concordantes. En plus d'y présenter des résultats originaux, cette étude illustre l'utilité des techniques de ré-échantillonnage développées dans notre premier article.
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The Study on the Relationship between Performance and Size of Domestic Open-end Mutual FundChiu, Li-chen 07 September 2010 (has links)
Investment of mutual fund has always been popular to the common investor. No matter investing at Systematic Investment Plan or One-time Investment, choosing a ¡§good¡¨ mutual fund is expected for every investor. However, how to find a good one among a large number of funds? In the past reports or theses, there are many reasons of influencing mutual fund performance, which include fund¡¦s size among others. The common sense said that ¡§if you want to invest in mutual fund, you should choose the larger size ¡¨ Is that true? Through the past reports we can find out different opinions. This study mainly research into the relationship between performance and size of domestic open-ended mutual funds. Expect to give a simpler data for reference and lower the risk before general investors put money into funds.
The logic of Spearman's Rank Correlation coefficient would be applied as the statistical inference in this study, and the domestic open-ended equity fund, balanced fund, and quasi-money market fund will be used as the observed samples. Monthly performance and size is the observed unit of time in this research period from March 2001 to February 2010. Thus via this mode will know whether the correlation between fund¡¦s performance and size is positive, negative or there is no correlation.
The conclusions of this study are presented as follows:
1. There is a low positive correlation between performance and size for equity fund and quasi-money market fund. But the balanced fund does not show any correlation for these two variables.
2. Moreover, the study shows there is better performance for investing in over 4 billion NT asset of equity fund in a short term period. But the result of balanced fund and quasi-money market fund can¡¦t highlight the optimal size in a short term period.
3. From the long term point of view, the optimal interval of size for equity and balanced fund is between 1 billion and 2 billion. And the optimal size to quasi-money market fund is over 40 billion.
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Two Studies in the Stability of Taiwan Listed Stock Statistics-The Application of Nonparametric MethodChuang, Ching-Chi 11 July 2002 (has links)
none
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Implementation and evaluation of a leadership training seminar at First Baptist Church of Spearman, TexasPatrick, John Earle. January 2000 (has links)
Thesis (D. Min.)--Dallas Theological Seminary, 2000. / Includes abstract. Includes bibliographical references (leaves 153-157).
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Implementation and evaluation of a leadership training seminar at First Baptist Church of Spearman, TexasPatrick, John Earle. January 2000 (has links)
Thesis (D. Min.)--Dallas Theological Seminary, 2000. / Includes abstract. Includes bibliographical references (leaves 153-157).
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Implementation and evaluation of a leadership training seminar at First Baptist Church of Spearman, TexasPatrick, John Earle. January 2000 (has links) (PDF)
Thesis (D. Min.)--Dallas Theological Seminary, 2000. / Includes abstract. Includes bibliographical references (leaves 153-157).
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Impacto da utilização da somatotropina bovina (bST) sobre a produção de leite e a avaliação genética de bovinos da raça Holandesa / Impact of bovine somatotropin (bST) on the milk yield and genetic evaluation of Holstein cattleRodrigues, Marcelo 18 February 2009 (has links)
O objetivo do presente trabalho foi estudar a influência do uso da somatotropina bovina (bST) sobre a produção de leite e a avaliação genética de bovinos da raça Holandesa. Para análise foram utilizados dados referentes a 474 touros e observações referentes a 3341 lactações de 1271 vacas, provenientes da Agropecuária Agrindus - S.A no estado de São Paulo no período de 1999 a 2003. Análise de variância (método dos quadrados mínimos) foi realizada pelo procedimento GLM do SAS® (2003), visando identificar o efeito da classe de aplicação do bST sobre a produção de leite aos 305 dias de lactação (PL305). Os valores genéticos preditos dos touros (PBV), componentes de variância e herdabilidade para a característica PL305 foram estimados utilizando-se um modelo animal a partir de duas análises; na primeira incluiu-se o efeito do bST como fixo e na segunda o referido efeito foi ignorado. Foram calculadas correlações de Spearman entre PBV dos touros para quatro conjuntos de touros avaliados: a) todos os touros; b) os melhores 20%; c) os melhores 10% e d) os melhores 5%. As médias da PL305 para as classes de bST foram 9175,11kg - sem bST, 9530,94kg - de 11 a 20 aplicações, 10150,57kg - de 21 a 30 aplicações e 11089,89 Kg de 31 a 59 aplicações. As herdabilidades foram respectivamente de 0,26±0,00 e 0,23±0,00 para as duas análises e as correlações entre os valores genéticos preditos para os conjuntos de touros a, b, c e d foram, respectivamente, 0,9484, 0,9829, 0,9752 e 0,8974. A análise de variância demonstrou as médias de PL305 aumentaram significativamente (P<0,0001), com o aumento do número de aplicações do bST. Os coeficientes de herdabilidade, embora relativamente baixos, indicam possível ganho genético, por meio de seleção, para produção de leite. As altas correlações de Spearman entre os valores genéticos dos touros, considerando-se ou não o uso do bST no modelo, indicam que o uso desta tecnologia não interfere na classificação dos touros avaliados geneticamente. / The aim of this study was to investigate the influence of the use of the bovine somatotropin (bST) on the milk production and the bovine genetic evaluation of Holstein cattle. Data regarding 474 bulls and observation concerning 3341 lactations of 1271 cows from the Agrindus Agriculture and Cattle Raising S.A. in the state of São Paulo, Brazil, between 1999 and 2003 were used for the analysis. The variance analysis (the minimum square method) was performed by the GLM procedure of the SAS® (2003) for identify the effects of the application class of the bST on the milk production at 305 days of lactation (PL305). For the bulls, the predicted breeding values (PBV), variance components and heritability for the PL305 characteristic were estimated using an animal model from two analyses; in the first, the bST was considered as fixed effect and in the second, the effect of bST was ignored. Spearman correlations between PBV for four sets of evaluated bulls were calculated: a) all bulls; b) the best 20%; c) the best 10% and d) the best 5%. The PL305 averages for the bST classes were 9175.11kg without bST; 9530.94kg from 11 to 20 applications; 10150.57kg from 21 to 30 applications; and 11089.89kg from 31 to 59 applications. The heritabilities were 0.26±0.00 and 0.23±0.00 respectively for both analyses and the correlations between the PBV for a, b, c, and d bull sets were, respectively, 0.9484, 0.9829, 0.9752 and 0.8974. The variance analysis demonstrated that the PL305 averages increased significantly (P<0.0001) with the increase of number of bST applications. The heritability coefficients, although relatively low, indicate a possible genetic gain, by selection, for milk production. The Spearman high correlations between the PBV of bulls, considering or not the bST use in the model, indicate that the use of this technology does not interfere in the genetically evaluated bulls classification.
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Impacto da utilização da somatotropina bovina (bST) sobre a produção de leite e a avaliação genética de bovinos da raça Holandesa / Impact of bovine somatotropin (bST) on the milk yield and genetic evaluation of Holstein cattleMarcelo Rodrigues 18 February 2009 (has links)
O objetivo do presente trabalho foi estudar a influência do uso da somatotropina bovina (bST) sobre a produção de leite e a avaliação genética de bovinos da raça Holandesa. Para análise foram utilizados dados referentes a 474 touros e observações referentes a 3341 lactações de 1271 vacas, provenientes da Agropecuária Agrindus - S.A no estado de São Paulo no período de 1999 a 2003. Análise de variância (método dos quadrados mínimos) foi realizada pelo procedimento GLM do SAS® (2003), visando identificar o efeito da classe de aplicação do bST sobre a produção de leite aos 305 dias de lactação (PL305). Os valores genéticos preditos dos touros (PBV), componentes de variância e herdabilidade para a característica PL305 foram estimados utilizando-se um modelo animal a partir de duas análises; na primeira incluiu-se o efeito do bST como fixo e na segunda o referido efeito foi ignorado. Foram calculadas correlações de Spearman entre PBV dos touros para quatro conjuntos de touros avaliados: a) todos os touros; b) os melhores 20%; c) os melhores 10% e d) os melhores 5%. As médias da PL305 para as classes de bST foram 9175,11kg - sem bST, 9530,94kg - de 11 a 20 aplicações, 10150,57kg - de 21 a 30 aplicações e 11089,89 Kg de 31 a 59 aplicações. As herdabilidades foram respectivamente de 0,26±0,00 e 0,23±0,00 para as duas análises e as correlações entre os valores genéticos preditos para os conjuntos de touros a, b, c e d foram, respectivamente, 0,9484, 0,9829, 0,9752 e 0,8974. A análise de variância demonstrou as médias de PL305 aumentaram significativamente (P<0,0001), com o aumento do número de aplicações do bST. Os coeficientes de herdabilidade, embora relativamente baixos, indicam possível ganho genético, por meio de seleção, para produção de leite. As altas correlações de Spearman entre os valores genéticos dos touros, considerando-se ou não o uso do bST no modelo, indicam que o uso desta tecnologia não interfere na classificação dos touros avaliados geneticamente. / The aim of this study was to investigate the influence of the use of the bovine somatotropin (bST) on the milk production and the bovine genetic evaluation of Holstein cattle. Data regarding 474 bulls and observation concerning 3341 lactations of 1271 cows from the Agrindus Agriculture and Cattle Raising S.A. in the state of São Paulo, Brazil, between 1999 and 2003 were used for the analysis. The variance analysis (the minimum square method) was performed by the GLM procedure of the SAS® (2003) for identify the effects of the application class of the bST on the milk production at 305 days of lactation (PL305). For the bulls, the predicted breeding values (PBV), variance components and heritability for the PL305 characteristic were estimated using an animal model from two analyses; in the first, the bST was considered as fixed effect and in the second, the effect of bST was ignored. Spearman correlations between PBV for four sets of evaluated bulls were calculated: a) all bulls; b) the best 20%; c) the best 10% and d) the best 5%. The PL305 averages for the bST classes were 9175.11kg without bST; 9530.94kg from 11 to 20 applications; 10150.57kg from 21 to 30 applications; and 11089.89kg from 31 to 59 applications. The heritabilities were 0.26±0.00 and 0.23±0.00 respectively for both analyses and the correlations between the PBV for a, b, c, and d bull sets were, respectively, 0.9484, 0.9829, 0.9752 and 0.8974. The variance analysis demonstrated that the PL305 averages increased significantly (P<0.0001) with the increase of number of bST applications. The heritability coefficients, although relatively low, indicate a possible genetic gain, by selection, for milk production. The Spearman high correlations between the PBV of bulls, considering or not the bST use in the model, indicate that the use of this technology does not interfere in the genetically evaluated bulls classification.
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Associação entre métodos de adaptabilidade e de estabilidade em feijão / Association between adaptability and estability methods in common beanMaziero, Sandra Maria 22 February 2011 (has links)
Conselho Nacional de Desenvolvimento Científico e Tecnológico / The study of adaptability and yield stability allows to identify cultivars adapted to specific conditions and wide, stable and with high grain yield, and can be realized as the different methodologies employed. Thus, the aim of this study was to investigate the association between adaptability and stability methods for grain yield in common bean cultivars and identify the most promising for cultivation in State of Rio Grande do Sul. For this, were used the Eberhart and Russell (1966), the Cruz et al. (1989), the additive main effects and multiplicative interaction analysis (AMMI), the Lin and Binns (1988) modified and the Annicchiarico (1992) methods, and, in the first three methods, the average grain yield was considered as a parameter of stability and adaptability. The competition trials of common bean cultivars were conducted in randomized block experimental design with three replications, during the growing seasons from 2000 to 2008, in ten different places of Rio Grande do Sul State, in different crop cultivation and harvesting period, totaling 24 experiments. We evaluated 12 common bean cultivars of different commercial groups (black, carioca and cranberry): Diamante Negro, Guapo Brilhante, Guateian 6662, IAPAR 44, Macanudo, Macotaço, Minuano, Tio Tibagi, TPS Nobre, Carioca, Pérola and Iraí. Significative cultivars x environments interaction were observed for grain yield. The TPS Nobre cultivar was the one closest to praised as ideal behavior, except for the AMMI analysis. While the Iraí cultivar was unstable and had low grain yield in Rio Grande do Sul State. Significative correlation was observed among Eberhart and Russell (1966), Cruz et al. (1989), AMMI, Lin and Binns (1988) modified and Annicchiarico (1992) methods, demonstrating that they are associated. Lin and Binns (1988) modified (rs = 0.95) and Annicchiarico (1992) (rs = 0.97) methodologies were highly correlated with the average grain yield and allowed the identification of stable and adapted cultivars among the most productive. Thus, in analysis of adaptability and stability for common bean crop, when the average grain yield is considered as a parameter of adaptability and stability, not recommended to use together of Eberhart and Russell (1966), Cruz et al. (1989), AMMI, Lin and Binns (1988) modified and Annicchiarico (1992) methods. Choosing the most appropriate method is at the discretion of the researcher. / O estudo da adaptabilidade e da estabilidade para produtividade de grãos permite a identificação de cultivares adaptadas às condições específicas ou amplas, estáveis e de elevada produtividade de grãos e pode ser realizado com o emprego de diferentes metodologias. Assim, o objetivo deste trabalho foi verificar a associação entre métodos de adaptabilidade e de estabilidade para a produtividade de grãos em feijão e identificar cultivares mais promissoras para o cultivo no Estado do Rio Grande do Sul. Para tanto, foram utilizados os métodos de Eberhart e Russell (1966), de Cruz et al. (1989), da análise dos efeitos principais aditivos e da interação multiplicativa (AMMI), de Lin e Binns (1988) modificado e de Annicchiarico (1992), sendo que, nas três primeiras metodologias, a média de produtividade de grãos foi considerada como um parâmetro de adaptabilidade e estabilidade. Os experimentos de competição de cultivares de feijão foram realizados no delineamento experimental de blocos ao acaso, com três repetições, durante os anos agrícolas de 2000 a 2008, em nove municípios do Estado do Rio Grande do Sul, em cultivo de safra e de safrinha, totalizando 24 experimentos. Foram avaliadas 12 cultivares de feijão de diferentes grupos comerciais (preto, carioca e manteigão): Diamante Negro, Guapo Brilhante, Guateian 6662, IAPAR 44, Macanudo, Macotaço, Minuano, Tio Tibagi, TPS Nobre, Carioca, Pérola e Iraí. Houve interação cultivares com ambientes significativa para a produtividade de grãos. A cultivar TPS Nobre foi a que mais se aproximou do comportamento preconizado como ideal, exceto pela análise AMMI. Já a cultivar Iraí foi instável e apresentou baixa produtividade de grãos no Estado do Rio Grande do Sul. Correlação significativa foi observada entres os métodos de Eberhart e Russell (1966), de Cruz et al. (1989), AMMI, de Lin e Binns (1988) modificado e de Annicchiarico (1992), demonstrando que estes estão associados. As metodologias de Lin e Binns (1988) modificado (rs = 0,95) e de Annicchiarico (1992) (rs = 0,97) foram altamente correlacionadas com as médias de produtividade de grãos e permitiram a identificação de cultivares estáveis e adaptadas entre as mais produtivas. Deste modo, em análise de adaptabilidade e de estabilidade na cultura do feijão, quando a média da produtividade de grãos é considerada como um parâmetro de adaptabilidade e de estabilidade, não se recomenda o uso conjunto dos métodos de Eberhart e Russell (1966), de Cruz et al. (1989), AMMI, de Lin e Binns (1988) modificado e de Annicchiarico (1992). A escolha do método mais adequado fica a critério do pesquisador.
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