Grouping for the judges' work.

At head of title: United States Centennial commission. International exhibition, 1876.

I Campi Flegrei.

Mode of access: Internet.

Mostra-postuma del pittore cav. Giacomo Campi : Milano ... nella storica Loggetta degli Osii, giugno-luglio 1922.

Text signed: Gustavo Macchi.

Tips and techniques : ability grouping and performance evaluation in physical education.

Bibliography: p. 11.

L'Emilio disingannato; dialoghi filosofici, opera arricchita d'illustrazioni varie per cura della Pia Associazione.

Mode of access: Internet.

Della felicità che gl'italiani possono e debono dal governo austriaco procacciarsi, col piano di un'associazione per tutta Italia, avente per oggetto la diffusione della pura lingua italiana, e la contemporanea soppressione de'dialetti che si parlano ne'varj paesi della penisoloa ...

Mode of access: Internet.

National longitudinal study of the high school class of 1972 : sample design efficiency study: effects of stratification, clustering, and unequal weighting on the variances of NLS statistics /

Project officer: William B. Fetters.

L'Apicoltore, periodico dell'Associazione centrale d'incoraggiamento per l'apicoltura in Italia.

Mode of access: Internet.

Bibliografia italiana; giornale dell' Associazione tipografico-libraria italiana;

From 1886 to 1900 the Bibliografia, being compiled at the Biblioteca nazionale centrale di Firenze, was issued by the library under the title Bollettino delle pubblicazioni italiane ricevute per diritto di stampa. Beginning with 1901, the Bibliografia was dissociated from the Bollettino and issued directly by the Associazione tipografico-libraria, with somewhat different arrangement and printed in larger format (29 cm.).

Ruggero Bonghi : Commemorazione detta per incarico dell'associazione della stampa in Roma, il giorno primo di dicembre 1895

Mode of access: Internet.

Statuto dell'Associazione dei cavalieri italiani del Sovrano militare ordine di Malta : pel servigio sanitario militare in guerra.

University of Illinois bookplate: "From the library of Conte Antonio Cavagna Sangiuliani di Gualdana Lazelada di Bereguardo, purchased 1921".

On a resampling approach for tests on the number of clusters with mixture model-based clustering of tissue samples

We consider the problem of assessing the number of clusters in a limited number of tissue samples containing gene expressions for possibly several thousands of genes. It is proposed to use a normal mixture model-based approach to the clustering of the tissue samples. One advantage of this approach is that the question on the number of clusters in the data can be formulated in terms of a test on the smallest number of components in the mixture model compatible with the data. This test can be carried out on the basis of the likelihood ratio test statistic, using resampling to assess its null distribution. The effectiveness of this approach is demonstrated on simulated data and on some microarray datasets, as considered previously in the bioinformatics literature. (C) 2004 Elsevier Inc. All rights reserved.

Clustering of related individuals in a population of the Australian lizard, Egernia frerei

Stable social aggregations are rarely recorded in lizards, but have now been reported from several species in the Australian scincid genus Egernia. Most of those examples come from species using rock crevice refuges that are relatively easy to observe. But for many other Egernia species that occupy different habitats and are more secretive, it is hard to gather the observational data needed to deduce their social structure. Therefore, we used genotypes at six polymorphic microsatellite DNA loci of 229 individuals of Egernia frerei, trapped in 22 sampling sites over 3500 ha of eucalypt forest on Fraser Island, Australia. Each sampling site contained 15 trap locations in a 100 x 50 m grid. We estimated relatedness among pairs of individuals and found that relatedness was higher within than between sites. Relatedness of females within sites was higher than relatedness of males, and was higher than relatedness between males and females. Within sites we found that juvenile lizards were highly related to other juveniles and to adults trapped at the same location, or at adjacent locations, but relatedness decreased with increasing trap separation. We interpreted the results as suggesting high natal philopatry among juvenile lizards and adult females. This result is consistent with stable family group structure previously reported in rock dwelling Egernia species, and suggests that social behaviour in this genus is not habitat driven.

A spatial explanation for synchrony biases in perceptual grouping: Consequences for the temporal-binding hypothesis

If two images are shown in rapid sequential order, they are perceived as a single, fused image. Despite this, recent studies have revealed that fundamental perceptual processes are influenced by extremely brief temporal offsets in stimulus presentation. Some researchers have suggested that this is due to the action of a cortical temporal-binding mechanism, which would serve to keep multiple mental representations of one object distinct from those of other objects. There is now gathering evidence that these studies should be reassessed. This article describes evidence for sensitivity to fixational eye and head movements, which provides a purely spatial explanation for the earlier results. Taken in conjunction with other studies, the work serves to undermine the current body of behavioral evidence for a temporal-binding mechanism.