Search results for "Sel"

Una vida en imágenes: los daily photo projects y la retórica del instante

2009

Los daily photo projects son una práctica contemporánea que consiste en tomar una fotografía digital diaria de sus protagonistas hasta el día de su muerte. Las imágenes son ensambladas en un video que, de este modo, concentra sus vidas en minutos. Una vida entera es visualizada como si fuera una secuencia de instantes, de instantáneas. Son alegorías de la vida que muestran el proceso de envejecimiento a modo de espejo, lanzando una nueva mirada al tópico de la vanitas y del autorretrato. El montaje en video es lo que convierte a estos proyectos en vanitas en movimiento ya que la secuencia de fotografías muestra el proceso de envejecimiento. Daily photo projects are contemporary photographic…

Elämän tarkoituksellisuuden kokemus ja sisältö vapaaehtoistyöhön osallistuvilla yli 60-vuotiailla eläkeläisnaisilla

2012

Tutkimuksen aiheena oli elämän tarkoituksellisuuden kokemuksen ja sisällön yksilölliset ja yleiset merkitykset vapaaehtoistyöhön osallistuvilla eläkeikäisillä. Päätutkimusongelmana esitettiin millaisia elämän tarkoituksellisuuden kokemuksia, sisältöjä ja merkityksiä yksilöt nostavat esille. Tutkimuksessa selvitettiin, millä tavalla vapaaehtoistyössä toimiminen sijoittuu elämän tarkoituksellisuuden kokemuksen muiden sisältöjen joukkoon, millaisia merkityksiä yksilöt antavat vapaaehtoistyöntekijänä toimimiselle ja millainen yhteys näillä merkityksillä on heidän elämän tarkoituksellisuuden kokemukseensa. Tutkimuksen kohderyhmänä olivat yli 60-vuotiaat kotona asuvat vapaaehtoistyöhön osallistuv…

Socioeconomic and attitudinal differences between service users of private and public early childhood education and care in the Finnish context

2023

The marketisation and privatisation of welfare services such as early childhood education and care (ECEC) have been a global trend in recent decades. Earlier research suggests that market-based ECEC provision often leads to inequalities and stratification of service users. In Finland, as in other Nordic countries where provision of ECEC has traditionally been a public responsibility, ECEC services have also been undergoing marketisation and privatisation. Until now, especially in Finland, little has been known about service users of public and private ECEC or parental decisions between public and private ECEC. This study addresses that gap by showing that the clientele of private and public…

Taideintegraatio varhaisiän musiikkikasvatuksessa : taideintegraation tarkastelua "Taidemuskari" -opetuskokeilun kautta

2009

"Kun Jumala etsi paikkakuntaa kadolla" : yhteisön selviytymisstrategiat Oulussa suurten nälkävuosien aikana 1695-1698

1998

Colour alone matters : no predator generalization among morphs of an aposematic moth

2018

Local warning colour polymorphism, frequently observed in aposematic organisms, is evolutionarily puzzling. This is because variation in aposematic signals is expected to be selected against due to predators' difficulties associating several signals with a given unprofitable prey. One possible explanation for the existence of such variation is predator generalization, which occurs when predators learn to avoid one form and consequently avoid other sufficiently similar forms, relaxing selection for monomorphic signals. We tested this hypothesis by exposing the three different colour morphs of the aposematic wood tiger moth, Arctia plantaginis, existing in Finland to local wild-caught predato…

The price of safety: food deprivation in early life influences the efficacy of chemical defence in an aposematic moth

2018

Aposematism is the combination of a primary signal with a secondary defence that predators must learn to associate with one another. However, variation in the level of defence, both within and between species, is very common. As secondary defences influence individual fitness, this variation in quality and quantity requires an evolutionary explanation, particularly as it may or may not correlate with variation in primary signals. The costs of defence production are expected to play a considerable role in generating this variation, yet studies of the cost of chemical defence have focused on species that sequester their defences, while studies in species that produce them de novo are scarce. …

An aposematic colour‐polymorphic moth seen through the eyes of conspecifics and predators – Sensitivity and colour discrimination in a tiger moth

2018

Although predation is commonly thought to exert the strongest selective pressure on coloration in aposematic species, sexual selection may also influence coloration. Specifically, polymorphism in aposematic species cannot be explained by natural selection alone. Males of the aposematic wood tiger moth (Arctia plantaginis) are polymorphic for hindwing coloration throughout most of their range. In Scandinavia, they display either white or yellow hindwings. Female hindwing coloration varies continuously from bright orange to red. Redder females and yellow males suffer least from bird predation. White males often have higher mating success than yellow males. Therefore, we ask whether females ca…

Safety in Numbers: How Color Morph Frequency Affects Predation Risk in an Aposematic Moth

2021

Polymorphic warning signals in aposematic systems are enigmatic because predator learning should favor the most common form, creating positive frequency-dependent survival. However, many populations exhibit variation in warning signals. There are various selective mechanisms that can counter positive frequency-dependent selection and lead to temporal or spatial warning signal diversification. Examining these mechanisms and their effects requires first confirming whether the most common morphs are favored at both local and regional scales. Empirical examples of this are uncommon and often include potentially confounding factors, such as a lack of knowledge of predator identity and behavior. …

The Effect of Predator Population Dynamics on Batesian Mimicry Complexes.

2022

Understanding Batesian mimicry is a classic problem in evolutionary biology. In Batesian mimicry, a defended species (the model) is mimicked by an undefended species (the mimic). Prior theories have emphasized the role of predator behavior and learning as well as evolution in model-mimic complexes but have not examined the role of population dynamics in potentially governing the relative abundances and even persistence of model-mimic systems. Here, we examined the effect of the population dynamics of predators and alternative prey on the prevalence of warning-signaling prey composed of models and mimics. Using optimal foraging theory and signal detection theory, we found that the inclusion …