1,721,038 research outputs found
Osservazioni preliminari sull'impiego delle somme termiche di sviluppo per il controllo di Aonidiella aurantii (Mask.) in Sardegna
No full textMaritime Supply Chain Security: A critical review
No full textThe importance of container security for international trade is well established and has been the subject of recent research in the follow up of the implementation of global security initiatives and the imperative of avoiding supply chain disruptions and reduce vulnerability. This article provides a review of the emerging literature on container security specifically in its interface with global logistics systems. The paper highlights the topics that have emerged as well-established research areas and indicates in what areas scholarly attention is most needed
Strategic Determinants of Terminal Operating System Choice: An Empirical Approach using Multinomial Analysis
No full textAbstractContainer terminal operators have at their disposal several operational options for performing both the transfer and the handling of containers. Traditionally, the determinants of the choice of operating systems have been investigated almost exclusively from a technical point of view, while limited research has been performed in the area of the strategic determinants of such choice.This study tries to investigate the strategic determinants of the operating system choice from an empirical perspective. Special attention is paid to understanding in which measure restrictive and limiting labour regimes can explain the preference for emerging automated models or, more in general, for less labour intensive concepts. A sample consisting of 65 European container terminals is built. For each terminal taking part in the sample the major determinants of the operations concepts are quantified. The use of logistic regressions provides interesting insights on what strategically motivates the choice of an operating system with respect to another, in order to investigate and discuss important managerial and policy implications
Potential and limiting factors in the use of alternative fuels in the European maritime sector
Full text linkThe maritime sector is a key asset for the world economy, but its environmental impact represents a major concern. The sector is primarily supplied with Heavy Fuel Oil, which results in high pollutant emissions. The sector has set targets for deacrbonisation, and alternative fuels have been identified as a short-to medium-term option. The paper addresses the complexity related to the activities of the maritime industry, and discusses the possible contribution of alternative fuels. A sector segmentation is proposed to define the consumption of each sub-segment, so to compare it with the current alternative fuel availability at European level. The paper shows that costs and GHG savings are fundamental enablers for the uptake of alternative fuels, but other aspects are also crucial: technical maturity, safety regulation, expertise needed, etc. The demand for alternative fuels has to be supported by an existing, reliable infrastructure, and this is not yet the case for many solutions (i.e. electricity, hydrogen or methanol). Various options are already available for maritime sector, but the future mix of fuels used will depend on technology improvements, availability, costs and the real potential for GHG emissions reduction.(c) 2021 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)
Observations préliminaires sur les infestations de Tropinota squalida (Scopoli) dans les vignobles en Sardaigne
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Insect pollination of sulla (Hedysarum coronarium L.) and its effect on seed production in a Mediterranean environment
No full textDuring the flowering period of 1998, insect pollinators of twovarieties of Hedysarum coronariunaL.(GrimaldiandSparacia)were monitored inanareaofNorthernSardinia(Italy).TheApidaeApis nlellifera L.andthe Anthophoridae Eucera numida Lep. were the mainpollinators.Among the seedyield components, the number of loments per raceme and seeds per loments were 98% and 42% lower, respectively, in the absence of pollinators in Grimaldi. The percentage of flowers setting seedwas about 50% in both varieties,eventhoughthemeannumber of pollinators perflowerwas 1.4 fold higherinGrimaldithan in Sparacia
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