1,720,955 research outputs found
The role of port authorities in the promotion of logistics integration between ports and the railway system: the Italian experience
No full textThis paper aims at deepening the knowledge about the traits and characteristics of the evolution of the intermodality quest in Italy by carrying on two distinct as well as correlated benchmark analyses. The first is performed on the approaches resulting by the Port Authorities (PAs) of Centre-Northern Italy and the second on the schemes adopted by the PAs of Southern Italy. The context of the analysis is characterized by the growing power of alliances, the vast diffusion of Ultra-Large Container Vessels both in container and Ro/Ro markets and the need for port systems to act in a logic of transport integration and sustainability. PAs of Center-Northern Italy have developed an active role in the transition to intermodality, promoting the participation in railways companies, focusing on the digitalization and integration with hinterlands. We show that the role of these PAs has proved fundamental in the acceleration of the process and there are various best practices that could be replicated in other contexts. PAs of Southern Italy's role, instead, is being hampered by the lack of suitable infrastructures, therefore their role has a different nature than in Center-Northern Italy. Southern Italy's PAs are also at the heart of various policies of fiscal incentives promoted by local and national governments, e.g. Special Economic Zones and Logistics Integrated Areas. Nonetheless, we show how they have been less effective in contrasting the growing power of other Mediterranean ports and have not been able to extend and diversify their port activities. The results of this work point in the direction of a more integrated cooperation between PAs and local and national governments, but also highlight that PAs alone cannot pursue such a complex transition in today's competitive market. Nevertheless, the current role of PAs in Italy has been reformed in 2016, therefore suggesting to treat results of this work as preliminary and in need of further research especially on the potential collaboration between public authorities and private operators. The work concludes with some food for thoughts and policy implications
“In Medio Stat Virtus”: Targeted Ad in Social Media Platforms with Heterogeneous Participants
No full textSocial media platforms face a strategic trade-off when addressing the needs of different user groups: while content providers would like to reach many users with their ads, users are not always interested in the advertised content and may suffer a disutility from advertising. How to create value for and thus attract participants from both sides? Using a formal model, we examine how the platform manages this positive-negative externalities trade-off by resorting to targeted advertising to minimize users' disutility from advertising. We find that contrary to mainstream theory's prediction of positive, self-reinforcing indirect network effects, platform configurations can have an unbalanced number of participants on the two sides. We show that "in medio stat virtus" principle applies indeed to this governance trade-off: the optimal governance strategy for the platform lies in-between the pricing level maximizing user benefits and that maximizing provider benefits
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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