Search results for " Nature"
showing 10 items of 391 documents
Occupations protohistoriques et médiévales en marge du village actuel de Ruvigny : Ruvigny, Aube "Proche l'Eglise". Document final de synthèse
2018
L’occupation se caractérise tout d’abord par une batterie au moins une soixantaine de silos de la transition entre le premier et le second Âge du Fer avec un bruit de fond Néolithique (mobilier résiduel) et Bronze final (quelques fosses et silos). Certains de ces silos ont livré un important mobilier céramique qui, couplé à des rejets de forges et des objets attestant d’un travail de tissage, pourrait indiquer la présence d’un habitat associé à proximité immédiate. L’activité métallurgique est attestée dès le Hallstatt D3.Si aucune inhumation n’a été retrouvé dans les silos, quelques ossements humains épars ont été prélevé dans quatre d’entre eux. Il faut également noter la présence du dépô…
Comportement en fatigue des composites en lin/époxy
2011
International audience; Le travail présenté s'intéresse à la caractérisation des propriétés mécaniques quasi-statiques et en fatigue d'un composite stratifié en lin/époxy. Les éprouvettes fabriquées par thermocompression ont des séquences d'empilement de 0/90° et ±45° pour les essais de traction uniaxiale et cisaillement plan respectivement. Les essais quasi-statiques révèlent une variabilité des propriétés mécaniques de l'ordre de 10%. Les essais de fatigue en traction et en cisaillement plan ont été réalisés pour des niveaux de contraintes compris entre 40 et 80% des valeurs ultimes du composite (US). L'étude des boucles d'hystérésis a mis en évidence une plastification plus importante en…
Taide, ekologia ja ihmisen monimuotoinen luontosuhde – kohti yhteistä tulevaisuutta -tutkimushankkeen kyselylomakkeet ja haastattelupohjat (2020-2021)
2023
The survey material includes a research invitation, nature relationship survey questions, environmental film reception survey questions, environmental sound artwork reception survey questions, participant interview questions and artist interview questions. The questionnaires contain unstructured and semi-structured questions about the participants' relationship with nature, perceptions of nature and representations of nature in art and other visual material. The artist questionnaire contains questions about the artist's experiences related to making a work of art as part of a research project. Kyselyaineisto sisältää tutkimuskutsun, luontosuhdekyselyn kysymykset, ympäristöaiheisten elokuvie…
E-Sports y brecha de género: la percepción de las profesionales españolas
2019
The present paper aims to identify the causes of under-representation of women in E-sports. According to a genre perspective, interest in videogames at the amateur level is quite similar. However, in its professional level, female participation becomes very limited. The fact that physical effort is irrelevant (a requirement for ?traditional sports?) could be considered a variable that would negatively affect greater to equality in the conditions of access and participation of women in electronic sports. Against any predictions, the data on the presence of women are elocuent: few women, with much lower wages than men to remunerate same skills, and a general complaint by the female profession…
Verifying the predicted risk of extinction based on ecological characteristics
2021
Red List status of species should reflect species extinction risk. Because data are limited and species response has a time lag, species may be threatened by extinction even if they are not Red‐Listed. The ability to predict species risk of extinction from ecological characteristics holds promises for proactively targeting conservation measures to species at high risk. In 2005, the risk of extinction from ecological characteristics was predicted for 81 species of Finnish butterflies. Now, after 15 years and two additional national Red List assessments, these predictions are verified. Species with a higher risk of extinction according to the original ecological extinction risk rank (EERR) ha…
Long-Term Data Reveal the Associations of the Egg Quality With Abiotic Factors and Female Traits in the Baltic Herring Under Variable Environmental C…
2021
In fish, the lipid resources of the female form a link between the environment and progeny, contributing to the contents of the egg yolk. Variation of the environmental conditions is therefore expected to affect the egg quality via maternal pathways, reflecting the female’s response to the environmental factors before spawning. We investigated the content of lipids and thyroid hormones in the ovary and eggs of the Baltic herring during 1988–2019, when salinity of the Baltic Sea first declined and then stabilized to a lower level, and winters varied between severe and mild. The total lipid resources of spawning females decreased by 40–50% during the study, and the ovarian lipid concentration…
Essays concerning Hume's natural philosophy
2016
The subject of this essay-based dissertation is Hume’s natural philosophy. The dissertation consists of four separate essays and an introduction. These essays do not only treat Hume’s views on the topic of natural philosophy, but his views are placed into a broader context of history of philosophy and science, physics in particular. The introductory section outlines the historical context, shows how the individual essays are connected, expounds what kind of research methodology has been used, and encapsulates the research contributions of the essays. The first essay treats Newton’s experimentalist methodology in gravity research and its relation to Hume’s causal philosophy. It is argued tha…
Diversification in evolutionary arenas - assessment and synthesis
2019
Abstract Understanding how and why rates of evolutionary diversification vary is a central issue in evolutionary biology and ecology. The concept of adaptive radiation has attracted much interest, but is metaphorical and verbal in nature, making it difficult to quantitatively compare different evolutionary lineages or geographic regions. In addition, the causes of evolutionary stasis are relatively neglected. Here we review the central concepts in the evolutionary diversification literature and bring these together by proposing a general framework for estimating rates of diversification and quantifying their underlying dynamics, which can be applied across clades and regions and across spat…