Search results for "evoluutio"
showing 10 items of 176 documents
Social transmission in the wild can reduce predation pressure on novel prey signals
2021
Funder: Suomen Kulttuurirahasto (Finnish Cultural Foundation); doi: https://doi.org/10.13039/501100003125
DevOps ja sen vaikutukset järjestelmäevoluution hallintaan
2017
Tietojärjestelmät ovat integroituneet syvälle nyky-yhteiskuntaan. Ohjelmistot nähdään kriittisinä tukien organisaatioiden sisäistä toimintaa ja kilpailukykyä. Turbulenteista markkinoista johtuen organisaatiolta vaaditaan jatkuvaa muun- tautumista, jonka voidaan nähdä heijastuvan järjestelmävaatimusten muutok- seen. Näin ollen yhteiskunnan jatkuva muuttuminen sysää painetta yhä enene- vissä määrin ohjelmistoja tuottavien organisaatioiden toimintaan. Yhteiskun- nassa jatkuvan muutoksen paine kuvaa, että tietojärjestelmät ovat luonteeltaan evolutiivisia. Toisien sanoen järjestelmiä tulee jatkuvasti muuntaa, jotta niiden kyky toimia ympäristössään säilyy. Järjestelmäevoluutio kuvaa piirteitä, j…
Evolutionary design optimization with Nash games and hybridized mesh/meshless methods in computational fluid dynamics
2012
A Feature Rich Distance-Based Many-Objective Visualisable Test Problem Generator
2019
In optimiser analysis and design it is informative to visualise how a search point/population moves through the design space over time. Visualisable distance-based many-objective optimisation problems have been developed whose design space is in two-dimensions with arbitrarily many objective dimensions. Previous work has shown how disconnected Pareto sets may be formed, how problems can be projected to and from arbitrarily many design dimensions, and how dominance resistant regions of design space may be defined. Most recently, a test suite has been proposed using distances to lines rather than points. However, active use of visualisable problems has been limited. This may be because the ty…
A metabolism of Adam and Eve: Damien Hirst meets Edvard Munch
2016
Sari Kuuva, University of Jyvaskyla Sari Kuuva, PhD (in cognitive science, 2007 and art history, 2010) is a post-doctoral researcher who works at the Department of Art and Cultural Studies at the University of Jyvaskyla. She has studied the relationship between art, aesthetics and psychology, particularly the concept of the symbol and the problematics of experiencing and creating visual art. Among Kuuva’s main publications relating to the art of Edvard Munch are: Symbol, Munch and Creativity: Metabolism of Visual Symbols (University of Jyvaskyla 2010); ‘Emotional creativity in art: case scream’ in Mind and Matter: Selected Papers of Nordic 2009 Conference for Art Historians (Helsinki, Socie…
Content, cost, and context: A framework for understanding human signaling systems
2019
Humans frequently perform extravagant and seemingly costly behaviors, such as widely sharing hunted resources, erecting conspicuous monumental structures, and performing dramatic acts of religious devotion. Evolutionary anthropologists and archeologists have used signaling theory to explain the function of such displays, drawing inspiration from behavioral ecology, economics, and the social sciences. While signaling theory is broadly aimed at explaining honest communication, it has come to be strongly associated with the handicap principle, which proposes that such costly extravagance is in fact an adaptation for signal reliability. Most empirical studies of signaling theory have focused on…
The effect of environmental fluctuations on the invasion success of bacterial invader Serratia marcescens
2017
Ilmastonmuutoksen on odotettu lisäävän ympäristöolosuhteissa tapahtuvien vaihteluiden määrää. Teorian mukaan nämä vaihtelut voisivat lisätä vieraslajien levittäytymistä uusille alueille, mikäli ne vaikuttavat ekologisiin ja evolutiivisiin prosesseihin, jotka tekevät lajeista menestyksekkäitä vieraslajeja sekä paikallisista eliöyhteisöistä ja ympäristöistä alttiimpia levittäytymiselle. Häiriöherkkien alueiden on oletettu olevan otollisia levittäytymiselle, minkä lisäksi vieraslajit ovat voineet valmiiksi sopeutua sietämään vaihtelevia olosuhteita alkuperäisalueellaan. Nopeasti vaihtelevissa ympäristöolosuhteissa luonnonvalinta voi suosia ominaisuuksia, kuten generalismia, joka auttaa eliöitä…
Material, mental, and moral progress : American conceptions of civilization in late 19th century studies on "things Chinese and Japanese"
2015
Sex-specific responses to cold in a very cold-tolerant, northern Drosophila species
2021
Funding: This work was supported by Academy of Finland projects 268214 and 322980 to MK and a NERC (UK) grant NE/P000592/1 to MGR. Organisms can plastically alter resource allocation in response to changing environmental factors. For example, in harsh conditions, organisms are expected to shift investment from reproduction toward survival; however, the factors and mechanisms that govern the magnitude of such shifts are relatively poorly studied. Here we compared the impact of cold on males and females of the highly cold-tolerant species Drosophila montana at the phenotypic and transcriptomic levels. Although both sexes showed similar changes in cold tolerance and gene expression in response…
Coevolution of parental investment and sexually selected traits drives sex-role divergence
2016
Sex-role evolution theory attempts to explain the origin and direction of male–female differences. A fundamental question is why anisogamy, the difference in gamete size that defines the sexes, has repeatedly led to large differences in subsequent parental care. Here we construct models to confirm predictions that individuals benefit less from caring when they face stronger sexual selection and/or lower certainty of parentage. However, we overturn the widely cited claim that a negative feedback between the operational sex ratio and the opportunity cost of care selects for egalitarian sex roles. We further argue that our model does not predict any effect of the adult sex ratio (ASR) that is …