نتایج جستجو برای: Ornaments

تعداد نتایج: 1114  

2014
Thomas Williams

6 Syntactic ornaments in the binary language 21 6.1 From ornaments to projection . . . . . . . . . . . . . . . . . . . . . . . . . . 24 6.2 Syntax of the binary language . . . . . . . . . . . . . . . . . . . . . . . . . . 25 6.3 Projection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 6.4 Datatype environment . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2006
Astrid Kodric-Brown Richard M Sibly James H Brown

Exaggerated male traits that have evolved under sexual selection include ornaments to attract mates and weapons to deter rivals. Data from studies of many such traits in diverse kinds of organisms show that they almost universally exhibit positive allometries. Both ornaments and weapons increase disproportionately with overall body size, resulting in scaling exponents within species that are co...

2016
Terry A. Gates Chris Organ Lindsay E. Zanno

Exaggerated cranial structures such as crests and horns, hereafter referred to collectively as ornaments, are pervasive across animal species. These structures perform vital roles in visual communication and physical interactions within and between species. Yet the origin and influence of ornamentation on speciation and ecology across macroevolutionary time scales remains poorly understood for ...

2013
Hsiao-chun Hung Yoshiyuki Iizuka

Nephrite (jade) ornaments, especially ear-ornaments, are among the most attractive artefacts in Southeast Asian archaeology. As Loofs-Wissowa stated (1980-81: 57): “Ear-ornaments in general seem to have played, and are still playing in some societies, a greater role in Southeast Asia and parts of South Asia than almost anywhere else in the world.....” Because of the beautifully wrought shapes a...

Journal: :J. Funct. Program. 2017
Pierre-Évariste Dagand

Functional programmers from all horizons strive to use, and sometimes abuse, their favorite type system in order to capture the invariants of their programs. A widely-used tool in that trade consists in defining finely-indexed datatypes. Operationally, these types classify the programmer’s data, following the ML tradition. Logically, these types enforce the program invariants in a novel manner....

2015
Rosalind L. Murray

Elaborate morphological ornaments can evolve if they increase the reproductive success of the bearer during competition for mates. However, ornament evolution is incredibly rare in females, and the type and intensity of selection required to develop female-specific ornamentation is poorly understood. The main goals of my thesis are to clarify the relationship between the type and intensity of s...

2014
Samuel J Tazzyman Yoh Iwasa Andrew Pomiankowski

Why are there so few small secondary sexual characters? Theoretical models predict that sexual selection should lead to reduction as often as exaggeration, and yet we mainly associate secondary sexual ornaments with exaggerated features such as the peacock's tail. We review the literature on mate choice experiments for evidence of reduced sexual traits. This shows that reduced ornamentation is ...

Journal: :The American naturalist 2001
A V Badyaev G E Hill P O Dunn J C Glen

Most studies of condition-dependent sexual ornaments have treated such ornaments as single traits. However, sexual ornaments are often composites of several components, each produced by partially independent developmental pathways. Depending on environmental and individual condition, components of these ornaments may reflect different behavioral or physiological properties of an individual. One...

Journal: :The Journal of the Anthropological Institute of Great Britain and Ireland 1890

Journal: :Proceedings. Biological sciences 2007
Charlie K Cornwallis Tim R Birkhead

Mate choice can lead to the evolution of sexual ornamentation. This idea rests on the assumption that individuals with more elaborate ornaments than competitors have higher reproductive success due to gaining greater control over mating decisions and resources provided by partners. Nevertheless, how the resources and quality of sexual partners that individuals gain access to are influenced by t...

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