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Speciation is the process that generates biodiversity, but recent empirical findings show that it can also fail, leading to the collapse of two incipient species into one. Here, we elucidate the mechanisms behind speciation collapse using a stochastic individual-based model with explicit genetics. We investigate the impact of two types of environmental disturbance: deteriorated visual conditions,
Svenska EU-parlamentariker har visat att det går att driva på för en aktiv klimat- och miljöpolitik inom EU, skriver Markku Rummukainen, professor i klimatologi, och Roger Hildingsson, statsvetare och forskare i klimatpolitik.
Translations of a number of poems by Swedish poet Lasse Söderberg (b. 1931). Translations made by Lars Gustaf Andersson and Carolyn ForchéTranslations of poems by Swedish poet Lasse Söderberg (b. 1931).
We discuss some aspects of the current status of event generators for small-x DIS. In particular we report on recent results using the CCFM evolution implemented in the SMALLX and CASCADE program concerning the importance of the so-called consistency constraint, and compare with the linked dipole chain model implemented in the LDC program. We point out some potential problems with the resolved vir
Background:Re-ablement is an approach aiming at improve home-care services for older people and to enable and support active engagement in everyday activities. An important responsibility for occupational therapists (OT) is to educate and support home care personnel, by coaching, mentoring and teaching them to work together with the clients to support their management of everyday activities as far
Monte Carlo models of DIS e-gamma scattering must describe hard emissions as well as the soft and collinear limits. Comparison with the observed experimental hadronic energy flow has shown that various models underestimate the high-p_T contribution, in particular at low-x. We have attempted to tune the Herwig, Pythia and Ariadne models to improve the agreement with the data, and to understand the
In Z0 decay into prompt charmonium, i.e. charmonium not originating from B-meson decays, the most important contribution is expected to come from colour-octet mechanisms. However, previous fixed-order calculations of the colour-octet contribution contain large logarithms which, in a more complete treatment, should be resummed to all orders. We study this resummation by using a Monte Carlo QCD casc
