Search results for "ODI"
showing 10 items of 17052 documents
Esiopetusikäisten lasten varhaiskasvatuksen fyysiseen ympäristöön liittämät merkitykset
2010
Tutkimuksen tarkoituksena oli selvittää mikä on esiopetusikäiselle lapselle merkityksellistä fyysisessä varhaiskasvatusympäristössä. Millainen esiope-tuksen varhaiskasvatusympäristö on lapsen silmin, ja mitä lapsi arvostaa oppimisympäristössä. Tutkin myös sitä, kohtaavatko lapsen näkemys ja ohjaavien asiakirjojen antama ohjeistus oppimisympäristöstä. Tutkimusaineisto kerättiin pyytämällä lapsia valokuvaamaan päiväkodissaan mieluisia ja epämieluisia paikkoja. Kuvien kehittämisen jälkeen lapset osallistuivat ryhmähaastatteluun, jossa selvitettiin kuvattujen ympäristöjen merkityksiä lapsille. Tutkimuksen perusteella voidaan päätellä, että merkityksellisintä esiopetus-ikäisille lapsilla fyysise…
Yhteistyö - klisee vai tosiasia : kodin ja koulun/päiväkodin välinen yhteistyö henkilökohtaisen opetussuunnitelman kontekstissa
2002
Varhaisen arvioinnin ja suunnittelun menetelmän (VARSU) käyttö ja toimivuus vuoropäiväkodin arjessa lapsen kehityksen tukemiseksi
2002
Multiple solutions for a Sturm-Liouville problem with periodic boundary conditions
2013
The main purpose of this paper is to establish the existence of multiple solutions for a Sturm-Liouville problem with periodic boundary conditions. The approach is based on variational methods and multiple critical points theorems
Transparency reduces predator detection in mimetic clearwing butterflies
2019
International audience; Predation is an important selective pressure and some prey have evolved conspicuous warning signals that advertise unpalatability (i.e. aposematism) as an antipredator defence. Conspicuous colour patterns have been shown effective as warning signals, by promoting predator learning and memory. Unexpectedly, some butterfly species from the unpalatable tribe Ithomiini possess transparent wings, a feature rare on land but common in water, known to reduce predator detection.We tested if transparency of butterfly wings was associated with decreased detectability by predators, by comparing four butterfly species exhibiting different degrees of transparency, ranging from ful…
The impact of life stage and pigment source on the evolution of novel warning signal traits
2021
Our understanding of how novel warning color traits evolve in natural populations is largely based on studies of reproductive stages and organisms with endogenously produced pigmentation. In these systems, genetic drift is often required for novel alleles to overcome strong purifying selection stemming from frequency-dependent predation and positive assortative mating. Here, we integrate data from field surveys, predation experiments, population genomics, and phenotypic correlations to explain the origin and maintenance of geographic variation in a diet-based larval pigmentation trait in the redheaded pine sawfly (Neodiprion lecontei), a pine-feeding hymenopteran. Although our experiments c…
Diversity in warning coloration: selective paradox or the norm?
2019
Aposematic theory has historically predicted that predators should select for warning signals to converge on a single form, as a result of frequency-dependent learning. However, widespread variation in warning signals is observed across closely related species, populations and, most problematically for evolutionary biologists, among individuals in the same population. Recent research has yielded an increased awareness of this diversity, challenging the paradigm of signal monomorphy in aposematic animals. Here we provide a comprehensive synthesis of these disparate lines of investigation, identifying within them three broad classes of explanation for variation in aposematic warning signals: …
Pyrrethroid resistance in Varroa destructor: Investigating the role of mutations in the voltage-gated sodium channel
2022
Entre les majors amenaces de l'apicultura contemporània es troba el parasitisme de Varroa destructor, Anderson & Trueman (Acari: Varroidae). Aquest àcar ectoparàsit altament especialitzat s'alimenta directament de les pupes i els adults de l'abella mel·lífera europea, Apis mellifera L. (Hymenoptera: Apidae), la qual cosa debilita greument a les abelles i les indueix una immunosupressió que desemboca en brots d'infeccions preexistents o vectorizades pels àcars que comprometen la viabilitat de les colònies. El control dels àcars V. destructor es un problema agreujat pel limitat número de tractaments de control disponibles i l'evolució de la resistència a aquests en les poblacions d'àcars. Enc…
Non-HLA Antibodies in Hand Transplant Recipients Are Connected to Multiple Acute Rejection Episodes and Endothelial Activation
2022
The role of anti-HLA antibodies in transplant rejection is well-known but the injury associated with non-HLA antibodies is now widely discussed. The aim of our study was to investigate a role of non-HLA antibodies in hand allografts rejection. The study was performed on six patients after hand transplantation. The control group consisted of: 12 kidney transplant recipients and 12 healthy volunteers. The following non-HLA antibodies were tested: antibody against angiotensin II type 1 receptor (AT1R-Ab), antibody against endothelin-1 type-A-receptor (ETAR-Ab), antibody against protease-activated receptor 1 (PAR-1-Ab) and anti-VEGF-A antibody (VEGF-A-Ab). Chosen proinflammatory cytokines (Il-1…