1,721,002 research outputs found
Green Hydrogen Generation: The EIC Pathfinder Challenge and Its Portfolio Implementation Plan
No full textTheEuropeanGreenDealaimsfortheEUtoachieveclimate
neutrality by 2050 by significantly reducing greenhouse gas
emissions acrossall economic sectors, with specific targetsset
for 2030.1 Currently, the energy system predominantly relies
onverticallyintegratedvaluechainsthattightlyconnectenergy
sources and end consumers, which limits the ability to
capitalize on opportunities arising from cross-sector coupling
and systems integration. To develop a secure, affordable,
resilient,andultimatelydecarbonizedenergysystemintheEU,
an integrated and systemic strategy is essential. This must
involve coordinated planning and operation of various energy
carriers, infrastructures, and demand sectors, alongside
enhanced integration with the EU economy’s circularity
principles
Innovation trends on high-temperature thermal energy storage to defossilize energy systems
No full textThe EU climate neutrality ambitious goals require breakthrough solutions and innovative products in many technological areas. The need of a transition to a more affordable energy system highlights the importance of new cost-competitive energy storage systems, including thermal energy storage (TES) for waste heat recovery, heating and cooling supply or for the increased flexibility of power systems via power to heat to power. This work focusses on technologically mature or close to market TES solutions, overviewing some of the most promising start-ups active in the sector of mid to high temperature TES for industrial heat applications or power to heat to power. It also discusses key elements to transfer these technologies to products available for market uptake. These key challenges include technical issues, such as control mechanisms, increased durability and stability of the employed materials, devices' reliability and fast dynamic performances to provide grid services or enable demand response; but also the development of new business models and novel approaches to produce revenues. Moreover, the review identifies as a key ingredient for the success in scaling up new TES products and manufacturing lines the capability to fast develop demonstration and first of a kind plants that can increase investors' trust.</p
Imidazolium salts having liquid crystal characteristics, useful as electrolytes
No full textNovel imidazolium salts of formula (I) are described in which R is a C 1 -C 14 alkyl group, optionally substituted by one or more fluorine atoms, or a C 2 -C 18 alkoxyalkyl group, R' is an alkyl group containing at least 8 carbon atoms, at least 6 of which are partially or entirely fluorinated, R" is hydrogen or C 1 -C 3 alkyl, Z is an organic or inorganic anion, and Q is further defined. The compounds of formula (I) are liquid crystals over a wide temperature range, and are characterised by high conductivity, hydrophobicity and stability. These properties made them ideally suitable for use in devices based on electrochemical reactions, such as solar cells, fuel cells, electrochemical sensors, lithium batteries and capacitors, etc
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
I sistemi microeolici nel mercato energetico italiano: previsioni di diffusione tecnologica attraverso uno studio delle loro potenzialità
No full textAppropriate 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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