Search results for "MSE"
showing 10 items of 130 documents
Inclusive production ofp-resonaces in πN-interactions
1991
A theoretical analysis of the inclusive production ofp-mesons in πN-collisions is carried out. It is shown that the reggeized pion exchange mechanism describes well a large set of the experimental data in the region of the Feynman variablex>0.6. The combination with the model of quark-gluon strings leads to a good agreement with the experiment for allx. The inclusive production of high spin resonances is discussed.
Ramsey interferometry of non-Hermitian quantum impurities
2020
We introduce a Ramsey pulse scheme which extracts the non-Hermitian Hamiltonian associated to an arbitrary Lindblad dynamics. We propose a realted protocol to measure via interferometry a generalised Loschmidt echo of a generic state evolving in time with the non-Hermitian Hamiltonian itself, and we apply the scheme to a one-dimensional weakly interacting Bose gas coupled to a stochastic atomic impurity. The Loschmidt echo is mapped into a functional integral from which we calculate the long-time decohering dynamics at arbitrary impurity strengths. For strong dissipation we uncover the phenomenology of a quantum many-body Zeno effect: corrections to the decoherence exponent resulting from t…
Impact of landscape on spatial genetic structure and diversity ofCoenagrion mercuriale(Zygoptera:Coenagrionidae) in northern France
2015
AbstractLoss and fragmentation of habitat is a current main cause of biodiversity loss in freshwater habitats. Odonates (dragonflies and damselflies) depend on these habitats to complete their development. Fragmentation may be a particular threat for odonates because it generates a network of small habitat patches within which populations could suffer from isolation and loss of genetic diversity. The southern damselfly Coenagrion mercuriale is categorized on the IUCN red list as Near Threatened, largely because of population fragmentation and demographic declines associated with changes in land use. Small populations at the margin of this species’ range are of particular concern because the…
New facets and an enhanced branch-and-cut for the min-max K -vehicles windy rural postman problem
2011
[EN] The min-max windy rural postman problem is a multiple vehicle version of the windy rural postman problem, WRPP, which consists of minimizing the length of the longest route to find a set of balanced routes for the vehicles. In a previous paper, an ILP formulation and a partial polyhedral study were presented, and a preliminary branch-and-cut algorithm that produced some promising computational results was implemented. In this article, we present further results for this problem. We describe several new facet-inducing inequalities obtained from the WRPP, as well as some inequalities that have to be satisfied by any optimal solution. We present an enhanced branch-and-cut algorithm that t…
Centenarians in Western Sicily
1998
Progressive aging of general population recorded in Italy has caused an increase of the number of centenarians. Such high age is often associated with failure of many psychic and physical functions, and centenarians are therefore often not independent (partially or completely) and require particular care.
High-precision mass measurements and production of neutron-deficient isotopes using heavy-ion beams at IGISOL
2019
An upgraded ion-guide system for the production of neutron-deficient isotopes with heavy-ion beams has been commissioned at the IGISOL facility with an $^{36}\mathrm{Ar}$ beam on a $^{\mathrm{nat}}\mathrm{Ni}$ target. It was used together with the JYFLTRAP double Penning trap to measure the masses of $^{82}\mathrm{Zr}, ^{84}\mathrm{Nb}, ^{86}\mathrm{Mo}, ^{88}\mathrm{Tc}$, and $^{89}\mathrm{Ru}$ ground states and the isomeric state $^{88}\mathrm{Tc}^{m}$. Of these, $^{89}\mathrm{Ru}$ and $^{88}\mathrm{Tc}^{m}$ were measured for the first time. The precision of measurements of $^{82}\mathrm{Zr}, ^{84}\mathrm{Nb}$, and $^{88}\mathrm{Tc}$ was significantly improved. The literature value for $^…
Seasonal changes in size, sex-ratio and body condition of the damselfishChromis chromisin the central Mediterranean Sea
2014
Chromis chromisis one of the most abundant fish species on the Mediterranean rocky shores. Acting as a by-pass of nutrients from the pelagic to the rocky littoral system, it plays an important role as a resource provider and has a relevant function in the community assemblage.Chromis chromishas many of the characteristics required of an indicator species (e.g. it is easy to recognize in the field, small sized, widespread and abundant). In this study we focused on individual size, sex-ratio and body condition in a damselfish population occurring in a central Mediterranean marine protected area. Fishing trials on a monthly basis (April–November) allowed us to assess seasonal changes in popula…
Progetti per raccontare la città
2020
Nell’ambito di una ricerca interdipartimentale il lavoro presenta l’esperienza di coordinamento di una attività progettuale condotta con giovani laureati nel centro storico di Caltabellotta, i cui lavori si offrono come occasione per aiutare la città a precisare intenzioni e atteggiamenti, riflessioni e azioni per innescare processi reali di rigenerazione. Un testo iniziale precisa e racconta le finalità del coordinamento.
Franz Cumont e l'Academia Belgica di Roma. Dal dono della biblioteca alla "Bibliotheca cumontiana"
2012
L'articolo illustra le linee e i risultati del progetto scientifico di promozione e valorizzazione degli archivi e delle opere di Franz Cumont, storico delle religioni dell'Antichità e archeologo belga (1968-1947), finanziato dall'Academia Belgica di Roma.
"L'introduction du culte de Mithra en Occident". Manuscrit inédit retrouvé dans les Archives de l'Academia Belgica (annoté par Th. Mommsen) (Planches…
2013
Présentation et édition d'un manuscrit inédit de Franz Cumont, retrouvé dans les Archives du savant belge à l'Academia Belgica de Rome.