Search results for "59"

Le problème de la connaissance dans la philosophie de Bergson [... philosophie de Bergson]

1929

Unraveling the evolutionary history of the phosphoryl-transfer chain of the phosphoenolpyruvate:phosphotransferase system through phylogenetic analys…

2007

[Background] The phosphoenolpyruvate phosphotransferase system (PTS) plays a major role in sugar transport and in the regulation of essential physiological processes in many bacteria. The PTS couples solute transport to its phosphorylation at the expense of phosphoenolpyruvate (PEP) and it consists of general cytoplasmic phosphoryl transfer proteins and specific enzyme II complexes which catalyze the uptake and phosphorylation of solutes. Previous studies have suggested that the evolution of the constituents of the enzyme II complexes has been driven largely by horizontal gene transfer whereas vertical inheritance has been prevalent in the general phosphoryl transfer proteins in some bacter…

Seasonal changes in predator community switch the direction of selection for prey defences

2014

Insect communities consist of aposematic species with efficient warning colours against predation, as well as abundant examples of crypsis. To understand such coexistence, we here report results from a field experiment where relative survival of artificial larvae, varying in conspicuousness, was estimated in natural bird communities over an entire season. This takes advantage of natural variation in the proportion of naive predators: naivety peaks when young birds have just fledged. We show that the relative benefit of warning signals and crypsis changes accordingly. When naive birds are rare (early and late in the season), conspicuous warning signals improve survival, but conspicuousness b…

Els sons de les Germanies: mostres, crides i processons en un temps convuls

2021

Las nuevas formas de movilidad de la población, la especificidad de la familia italiana y la explosión del coronavirus en Lombardía

2021

Conflicto obrero y luchas laborales en el sector logístico del Valle del Po

2021

Between Paris and Geneva: Some Remarks on the Approval of the Gallican Confession (May 1559)

2018

Questo articolo analizza l'approvazione della Confessione gallicana durante il cosiddetto primo sinodo nazionale delle Chiese riformate francesi, tenutosi a Parigi nel maggio 1559. Il consenso stabilito è che Calvino abbia avuto un ruolo da protagonista nell'adozione della Confessione da parte dei pastori riuniti a Parigi. Si ritiene che questi ultimi abbiano modificato e promulgato la Confessione gallicana sulla base di una bozza che il primo aveva scritto e inviato al sinodo. Questo documento metterà alla prova l'ipotesi che Calvino non abbia mai inviato alcuna bozza a Parigi per l'approvazione nel maggio 1559 e che un documento parigino del 1557, la lettera-confessione Au Roy, sia stato …

Secure and scalable dataprocessing and communications for an Animal Tracking System

2003

Masteroppgave i informasjons- og kommunikasjonsteknologi 2003 - Høgskolen i Agder, Grimstad Modern technology is constantly being employed in new fields, by new industries and people. The cost of advanced technological equipment decreases continously, and equipment that was reserved for people and corporations with a lot of money has now become household products. This enables many interesting ideas and projects, Kitron Development’s radiocollar project being one of them. Kitron Development is involved in a project to track the position of animals by substituting the traditional bell collar with a collar that contains a GPS receiver. The collar transmits its position to a base station using…

Spanish research in Educational Psychology from a gender perspective (2008-2018)

2021

[EN]: A comparative study disaggregated by gender of the scientific production in Educational Psychology of researchers working in Spanish institutions is carried out. A total of 1949 authors have been identified who have published some work in journals indexed in the Psychology Educational category in the Journal Citation Reports (JCR) corresponding to the years 2008-2018. The 56.44% of the authors identified were women versus 41.92% of men and a 1.64% of authors could not be identified. The results show an increase in the number of papers published in this discipline and an increase in the number of women working in Educational Psychology throughout the period analyzed. However, as a conc…

Dynamics of gene regulatory networks and their dependence on network topology and quantitative parameters – the case of phage λ

2019

Background Gene regulatory networks can be modelled in various ways depending on the level of detail required and biological questions addressed. One of the earliest formalisms used for modeling is a Boolean network, although these models cannot describe most temporal aspects of a biological system. Differential equation models have also been used to model gene regulatory networks, but these frameworks tend to be too detailed for large models and many quantitative parameters might not be deducible in practice. Hybrid models bridge the gap between these two model classes – these are useful when concentration changes are important while the information about precise concentrations and binding…