1,720,995 research outputs found
Looking Toward the Energy-Sustainable Smart Port: A Resilient Energy Hub in the Electric Grids [Viewpoint]
No full textThis article summarizes the current trends in the transformation of ports into multienergy hubs, where electric energy predominates ('smart ports') in view of the most appealing means of decarbonization of maritime transport, i.e., by using electricity as an alternative fuel. Electrification is recognized as one of the most favorable means toward more environmentally friendly waterborne vessels, referring mainly to electric propulsion and optimized management of energy sources and loads on board
The SSE-ID Card of Ships in the Sustainable Maritime Framework
No full textNowadays, the worldwide implementation of shore-to-ship connection paradigm is hindered by the large variability of requirements on the ships to be powered. In order to solve this issue, a standardized form must be conceived for defining all the characteristics. The paper wants to presents the shore-side electricity (SSE) related information as encoded in an electronically registered ID card (the SSE-ID) of all the ships subjected to cold ironing obligation. As finalized in the IEEE 45.1, the format of SSE-ID is anticipated to facilitate the SSE-connectivity procedures in all the equipped ports
The SSE-ID Card of Ships in the Sustainable Maritime Framework
Full text linkNowadays, the worldwide implementation of shore-to-ship connection paradigm is hindered by the large variability of requirements on the ships to be powered. In order to solve this issue, a standardized form must be conceived for defining all the characteristics. The paper wants to presents the shore-side electricity (SSE) related information as encoded in an electronically registered ID card (the SSE-ID) of all the ships subjected to cold ironing obligation. As finalized in the IEEE 45.1, the format of SSE-ID is anticipated to facilitate the SSE-connectivity procedures in all the equipped ports
Decarbonization of the Maritime Transportation Systems: Recent Progress, Challenges, and Prospects
No full textMaritime transportation decarbonization plays a pivotal role in eliminating carbon emissions from the transportation sector, one of the significant contributors to global greenhouse gas (GHG) emissions. The maritime transportation industry, traditionally reliant on fossil fuels, is experiencing a rapid transformation by adopting alternative fuels and renewable energy sources to drive sustainable practices in the shipping sector. This paper aims to provide insight into emerging technologies to achieve decarbonization, such as alternative fuels, alternative energy sources (onshore power supply, wind energy, solar energy, fuel cell), and operational approaches (speed optimization, voyage optimization). Moreover, we present these technologies' benefits and challenges, recent progress, and future directions
On Estimating the Port Power Demands for Cold Ironing Applications
No full textThis paper presents an analysis on how ports can estimate the electric power and energy demands due to the implementation of cold ironing, as a solution to minimise the atmospheric pollution provoked by ships at berth. Alternative methods are analysed and discussed. The first one is based on approximate formulae to calculate the power demand as a fraction of the ship installed power. The second one utilizes the monitoring database of ship emissions. A parameters estimation is then realised to show how the approximate method can be tuned to obtain results comparable with those obtained with the emissions analysis
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
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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