Floræ libycæ prodromus; ou, Catalogue raisonné des plantes de Tripolitaine,

Each plate accompanied by leaf of descriptive text.

Extrait du Florae libycae prodromus; ou, Catalogue raisonné des plantes de Tripolitaine,

Consists of cxxvii p. of the work, with "Table ȧlphabétique des genres" (p.cxxix-cxxxiii) added.

Description de quelques plantes remarquables de la Nouvelle-Calédonie,

Extracted from Paris. Museum d'histoire naturelle. Nouvelle archives, sér. 2, t.4.

On some Concepts of Residuals

2000 Mathematics Subject Classification: 60E10, 62G15, 62M20

Analysis of residuals in contingency tables: another nail in the coffin of conditional approaches to significance testing.

Omnibus tests of significance in contingency tables use statistics of the chi-square type. When the null is rejected, residual analyses are conducted to identify cells in which observed frequencies differ significantly from expected frequencies. Residual analyses are thus conditioned on a significant omnibus test. Conditional approaches have been shown to substantially alter type I error rates in cases involving t tests conditional on the results of a test of equality of variances, or tests of regression coefficients conditional on the results of tests of heteroscedasticity. We show that residual analyses conditional on a significant omnibus test are also affected by this problem, yielding type I error rates that can be up to 6 times larger than nominal rates, depending on the size of the table and the form of the marginal distributions. We explored several unconditional approaches in search for a method that maintains the nominal type I error rate and found out that a bootstrap correction for multiple testing achieved this goal. The validity of this approach is documented for two-way contingency tables in the contexts of tests of independence, tests of homogeneity, and fitting psychometric functions. Computer code in MATLAB and R to conduct these analyses is provided as Supplementary Material.

Évaluation de la bioconcentration de l'huile voltesso par les plantes à la suite d'un déversement simulé

Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.

Évaluation de la bioconcentration de l'huile voltesso par les plantes à la suite d'un déversement simulé

Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.