Search results for "coexistence"
showing 10 items of 70 documents
Modélisation de la dispersion de transgènes à l'échelle de paysages agricoles
2006
Rapport scientifique de fin de contrat. Appel d'offres : impact des OGM
Effects of density, species interactions, and environmental stochasticity on the dynamics of British bird communities
2022
Our knowledge of the factors affecting species abundances is mainly based on time-series analyses of a few well-studied species at single or few localities, but we know little about whether results from such analyses can be extrapolated to the community level. We apply a joint species distribution model to long-term time-series data on British bird communities to examine the relative contribution of intra- and interspecific density dependence at different spatial scales, as well as the influence of environmental stochasticity, to spatiotemporal interspecific variation in abundance. Intraspecific density dependence has the major structuring effect on these bird communities. In addition, envi…
Exploitation competition between hole‐nesters ( Muscardinus avellanarius , Mammalia and Parus caeruleus , Aves) in Mediterranean woodlands
2005
Data from a long-term study (1993-2003) using artificial nest-boxes, were analysed to examine competition for nesting between blue tit Parus caeruleus and common dormouse Muscardinus avellanarius in Sicily. Occupation rates and the reproductive biology of the blue tit in sample woodlots outside the distribution area of the common dormouse were used as a control in sample areas where the two species were syntopic. A selection test showed that the two species, when living in syntopy, actively chose the small nest-boxes, thus overlapping in the use of the same spatial resource. The experimental exclusion of the common dormouse from nest-boxes caused an increase of blue tit occupation rate. Onc…
Learning from Errors: Detecting ZigBee Interference in WiFi Networks
2014
In this work we show how to detect ZigBee interference on commodity WiFi cards by monitoring the reception errors, such as synchronization errors, invalid header formats, too long frames, etc., caused by ZigBee transmissions. Indeed, in presence of non-WiFi modulated signals, the occurrence of these types of errors follows statistics that can be easily recognized. Moreover, the duration of the error bursts depends on the transmission interval of the interference source, while the error spacing depends on the receiver implementation. On the basis of these considerations, we propose the adoption of hidden Markov chains for characterizing the behavior of WiFi receivers in presence of controlle…
Ecological and evolutionary consequences of selective interspecific information use
2023
Recent work has shown that animals frequently use social information from individuals of their own species as well as from other species; however, the ecological and evolutionary consequences of this social information use remain poorly understood. Additionally, information users may be selective in their social information use, deciding from whom and how to use information, but this has been overlooked in an interspecific context. In particular, the intentional decision to reject a behaviour observed via social information has received less attention, although recent work has indicated its presence in various taxa. Based on existing literature, we explore in which circumstances selective i…
The Participation of Families in the Analysis and Transformation of their Reality through a Family Debate about Values and Living Together
2015
Este estudio aborda la socialización en valores y convivencia a partir de una investigación acción que parte de un enfoque participativo y dialéctico y que utiliza el Debate familiar, una herramienta innovadora cuyas finalidades son favorecer la reflexión y el diálogo intrafamiliar e implicar a las familias en el análisis y transformación de su realidad. Esta estrategia estimula el debate e invita a pensar sobre los valores presentes en la familia, recoge información de los diferentes miembros de la unidad familiar y a su vez, sensibiliza sobre los temas tratados. Un total de 492 familias, con al menos un hijo o hija entre 7 y 16 años, participaron en este estudio. Los resultados ponen de r…
Shape evolution in even-even N≤126, Z≥82 nuclei
2010
The shape evolution in the neutron-de cient lead, polonium and radium nuclei has been investigated via in-beam and delayed y-ray and conversion electron spectroscopy. The lead isotope 180Pb is found to still exhibit prolate excited structure, related to the known intruder structures in the heavier isotopes. The production cross-section of 180Pb was only 10 nb, one of the lowest ever employed in an in-beam experiment. A candidate for an excited prolate band was found in 192Po, making it the rst polonium isotope for which both oblate and prolate rotational bands have been established. Contrary to the previous results, the current experiments indicate that the onset of deformation in the radiu…
Stranieri. Figure dell'Altro nella Grecia antica
2020
l libro indaga, nel mondo greco antico, la divisione concettuale in “Noi” e “gli Altri” (e i connessi modi di pensare lo straniero), i rapporti tra il primo gruppo e il secondo (con particolare attenzione alle esperienze di gestione nonviolenta di tali rapporti), il diritto di cittadinanza e, più in generale, la convivenza in una società multiculturale. Il primo capitolo affronta il tema dell’ospitalità: nel mondo omerico l’accoglienza dello straniero aristocratico, ma anche del mendicante, si presenta non come un atto di carità individuale ma come una vera e propria istituzione sotto l’egida della divinità. Più tardi, nella struttura della polis, l’ospitalità diviene, nella forma della pro…
Adopción en casos especiales y unidad del status filiationis en el derecho italiano: ¿cómo repercute en el plano sucesorio?
2022
In the Italian legal system, there has recently been recognition by the Constitutional Court in adoptions in particular cases of the existence of civil relations between the adoptee and the relatives of the adopter, thus equalizing the margins of protection of minors, regardless of the situations of fact or law from which the new status of the child originated. This jurisprudential work is full of considerable systematic reflections and is intended to be applied not only to the hypothesis of adoption by same-sex couples, but also to all those cases in which a state of semi-permanent abandonment or cyclical abandonment occurs. Notwithstanding the negative value directed at the forms of surro…
Experimental study of 1/2(+) isomers in At-199,At-201
2014
Using fusion-evaporation reactions, a gas-filled recoil separator, and recoil-electron and recoil-electron-alpha tagging techniques, a new isomeric 1/2(+) state [T-1/2 = 45(3) ms] in At-201 is identified, and an earlier reported corresponding state [T-1/2 = 273(9) ms] in At-199 is confirmed. The 1/2(+) state is suggested to originate from an intruder pi(s(1/2))(-1) configuration. In addition, nuclear structure of states below and above this 1/2(+) state are studied in both nuclei. The isomer decays through a cascade of an E3 transition followed by a mixed M1/E2 transition to the 9/2(-) ground state, and it is interpreted to be fed from nearly spherical 3/2(+) and 5/2(+) states originating f…