1,721,139 research outputs found
A new species of Bolbelasmus Boucomont, 1911 (Insecta Coleoptera Geotrupidae) from Sicily (Italy).
Full text linkAuthors have examined all available sicilian specimens belonging to the genus Bolbelasmus, collected between 1893 and 2010, previously identified as B. gallicus e B. unicornis. They conclude that both species have to be excluded from the sicilian fauna and describe the new species B. romanorum, which is characterized by peculiar punctures on the clypeus, the head and the pronotum, and by the shape of the clypeus, the head and the aedeagus sclerites. They compare the new species with all the taxa currently known in the Mediterranean. Further, they show oscillograms of both sexes of the new species, which, as other Bolbelasmus, stridulates vigorously; they also detect for the first time the pars stridens, consisting in a series of small bristles on the lower outer border of wings; the insect emits its sound moving actively the abdomen, the friction of the wing on the first abdominal tergite, particularly swollen, produces the stridulation
A frequency based approach for container assignment on an intermodal network: challenges, issues and formulations
No full textL'innovazione nelle aree rurali: l'ambiente e il modello della quintupla elica
Full text linkIn this paper we analyze some specific conditions for local and regional development. Our interest is oriented towards a multidimensional
aspect of peripheral and rural areas. The rural areas considered as a productive eco-system reflects a strong relationship between
the agriculture and other economic activities, In addition eco-systems must be protected and enhanced to develop innovation models
such as the Quadruple and Quintuple Helix, that propose roles and responsibilities for a new regional development trajectory. According
to the Quintuple Helix Model and the implementation of the Smart Specialization Strategy, this paper underlines the importance
of connecting the innovation process within rural territories
Formulating a mathematical model for container assignment optimization on an intermodal network
No full textDebt Sustainability Framework in HIPCs: A Critical Assessment and Suggested Improvements
No full textMaladera insanabilis (Brenske, 1894), specie invasiva nella regione mediterranea e sua distribuzione in Libia (Coleoptera Scarabaeidae Sericini).
No full textExternal debt sustainability and domestic debt in Heavily Indebted Poor Countries
Full text linkIn this paper we stress the limits of the current debt sustainability framework used in the IMF-WB HIPC Initiative and the necessity to include domestic public debt into the analysis. The standard sustainability analysis does not take into account the fully-fledged budget constraint and the feedback effects of the fiscal and monetary adjustment required by multilateral programs. The switch from foreign to domestic borrowing, and rising domestic real interest rates are likely to undermine the overall sustainability and the success of debt relief programs. This work focuses on the evaluation of public debt sustainability in a simple accounting framework. We use data on external public debt (multilateral and bilateral) and on domestic public debt to underline how the inclusion of domestic debt into the analysis undermines the sustainability target
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Formulating a mathematical model for container assignment optimization on an intermodal network
No full textIn this paper we deal with container assignment optimization on an intermodal network. We propose a linear programming model, following a frequency based approach, addressing both the maritime and the inland component, and taking into account custom times at ports and service frequencies. The proposed arc-based formulation, in which only variables related to arcs which actually exist are explicitly created, is particularly suitable for very large but sparse networks, typical in maritime long distance transport, because it allows strongly reducing the number of variables involved. Finally, we discuss computational results obtained on a real size instance
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