1,720,968 research outputs found
Il ruolo del carbone nello sviluppo economico della Cina
No full textFollowing the economic reform of late 1970s China has had a very fast economic growth: its GDP has grown at an average annual rate of 9.3% and in the first nine months of 2005 it stood at 9.4%. To face the energy demand, in the 1980s, the Chinese government adopted, an energy policy plan based on domestic energy resources, mainly coal. China accounts for 12.6% of the world’s proven coal reserves and is both the largest producer and consumer of coal in the world. China's coal production in 2004 was 1.400 billion Mt and at present coal fired plants accounted for 73% of the installed power generation
Prospettive di sviluppo dell’energia eolica in Cina
No full textAs a consequence of strong recent increases in the Chinese consumption of electric power, significant doubts about the ability to face the Chinese energy demand coming from industrial, handicraft and domestic sectors are lately arisen. The need to free itself, at least partially, from oil and coal, has created various political and economic initiatives culminated in the "Law on renewable energies" of February 28th, 2005 that will come into force on January 11th, 2006. In this context, the program of wind energy exploitation assumes particular importance, because China has abundant wind energy resources. At an estimated 23-29% capacity factor, annual potential production of electricity from wind power could be as great as 506-632 TWh. Furthermore, China has a large area of shallow sea along its eastern coastline, and preliminary estimates show that the offshore wind energy potential may be three times greater than onshore potential
Prodotti di degradazione ed altri markers caratteristici dell'aloe nelle bevande alcoliche aromatizzate (fernet).
No full textThe European Ecolabel for tourist accommodation in Italy: An exploratory study
No full textAmong the existing voluntary initiatives that a business may implement to contribute directly and indirectly to the efficient use of natural resources and to the environmental protection, formal certification schemes concerning products or services are the ones that may guarantee a defined framework for an official recognition of the environmental commitment to continuous and sustainable improvement. The introduction of the EU Ecolabel, aimed to promote products (and, successively, also tourism services) with reduced negative environmental impacts, was intended both to propose to the market a common reference standard for the European State members and to ensure credibility of a voluntary label based on a public recognition scheme among customers and other stakeholders. The purpose of this research was to address the perception issue about the advantages driven by the award of the EU Ecolabel to tourist accommodation service and the main difficulties encountered by the applicants. After having considered the EU Ecolabel scheme participation experience of the Italian mountain hut-keepers in a previous work, the study was further expanded to all the EU Ecolabel licence-holders for tourist accommodation service, in 2013, in Italy. Also in this case, the data analysed and discussed were collected through a questionnaire designed to gather a mix of qualitative and quantitative information in January 2014
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
- …
