Search results for " Competition"

The role of post-natal ontogeny in the evolution of phenotypic diversity in Podarcis lizards

2011

Understanding the role of the developmental pathways in shaping phenotypic diversity allows appreciating in full the processes influencing and constraining morphological change. Podarcis lizards demonstrate extraordinary morphological variability that likely originated in short evolutionary time. Using geometric morphometrics and a broad suite of statistical tests, we explored the role of developmental mechanisms such as growth rate change, ontogenetic divergence ⁄ convergence ⁄ parallelism as well as morphological expression of heterochronic processes in mediating the formation of their phenotypic diversity during the post-natal ontogeny. We identified hypermorphosis – the prolongation of …

Housing Memories in Riga: WWI and Its Aftermath—Representation of the Apartment in Soviet Cinema and Now

2020

Geography of film provides information on new historiographic perspectives in architecture, space and the imagination of urban environment. This chapter contributes to the field of human geography by conducting a content analysis of a vast number of films made between the early 1910s and present time focusing on development and spatial organization of living spaces in Riga. The research elucidates the construction of meaning of space and housing memory, where relations of dominance is defined and contested in visual representation of Riga’s apartments. A qualitative research methodology was used based on best practices of human geography data transcription and coding. The main findings show…

A label compression method for online multi-label classification

2018

Abstract Many modern applications deal with multi-label data, such as functional categorizations of genes, image labeling and text categorization. Classification of such data with a large number of labels and latent dependencies among them is a challenging task, and it becomes even more challenging when the data is received online and in chunks. Many of the current multi-label classification methods require a lot of time and memory, which make them infeasible for practical real-world applications. In this paper, we propose a fast linear label space dimension reduction method that transforms the labels into a reduced encoded space and trains models on the obtained pseudo labels. Additionally…

Under my wing: lesser kestrels and jackdaws derive reciprocal benefits in mixed-species colonies

2011

In mixed-species assemblages, antipredator benefits for a timid species nesting close to a more pugnacious one are often reported. Advantages for the protected species are usually manifested in terms of higher reproductive success than conspecifics nesting remote to the protector species. Whether the protector species also accrues any benefit remains untested, and the species-specific behavioral traits underlying enhanced reproductive output in mixed-species associations remain poorly documented. We studied associations between lesser kestrels (Falco naumanni) and jackdaws (Corvus monedula) nesting in rural buildings in the Gela Plain (Italy). We tested for interspecific interactions of jac…

Narrative and Place

2017

The purpose of this chapter is to explore possible intersections between place and narrative, questioning an understanding that simply associates place with space and narrative with time and infers their separation from that. After introducing two directions from which the problem can be addressed, namely the role of place for the phenomena analyzed in terms of narrative, on the one hand, and the role of narrative for the understanding of place, on the other, the text pursues the first perspective and explores the relation between place and narrative with regard to the theory of the self, ethics, the theory of action and history. The concluding section briefly discusses the way narrative in…

Tamil Diaspora Schools—Ethnic-National Education in a Transnational Space

2012

The 2010 independence jubilees: the politics and aesthetics of national commemoration in Africa

2013

In 2010, as many as seventeen African states celebrated their independence jubilees. The debates surrounding the organisation of these celebrations, and the imagery and performances they employed, reflect the fault lines with which African nation-building has to contend, such as competing political orientations as well as religious, regional and ethnic diversity. The celebrations represented constitutive and cathartic moments of nation-building, aiming to enhance citizens' emotional attachments to the country and inviting to remember, re-enact and re-redefine national history. They became a forum of debate about what should constitute the norms and values that make-up national identity and,…

Testis asymmetry in birds: the influences of sexual and natural selection

2014

Gonad size and shape asymmetries are particularly common in birds. Although some obvious size and shape differences between the left and right testes in birds were first documented more than a century ago, little is known about what influences the variation across species in either the degree or the direction of these asymmetries. Here we show that a left bias in size is the most likely ancestral state in most orders and families, and that there is a weak but significant negative relation between the degree of size and shape asymmetries. In extant species, testis size and shape symmetries increase with the degree of sperm competition (relative testes mass), but those relations are significa…

Effetti della competizione interspecifica sull’efficienza di utilizzazione dell’azoto in differenti genotipi di frumento duro al variare della dispon…

2009

A comparison between industrial experts' and novices' haptic perceptual organization: a tool to identify descriptors of the handle of fabrics

2004

Abstract In descriptive analysis, the establishing of the list of attributes is crucial. Attributes should account for consumers' perceptions and be understood by professionals for efficient communication. This work was aimed at identifying the most appropriate attributes for fabric description from the terminology associated with both experts' and novices' haptic perceptual spaces. Eleven industrial experts and two groups of novices (20 males and 20 females) evaluated 26 clothing fabrics. They performed (1) a free-sorting task based on haptic similarities, (2) a description of the previously formed groups, and (3) a hedonic rating task for each fabric. The perceptual organization was simil…