1,721,015 research outputs found

    Exploring the potential for nature-based solutions to cool the streetscapes of a densely urbanised Mediterranean city

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    Rising temperatures due to climate change are expected to have a greater impact on cities, compared to rural areas, due to the Urban Heat Island (UHI) effect. In cities of the Mediterranean Basin, cooling of the urban microclimate is becoming a priority for practitioners, stakeholders, citizens and public authorities. The use of Nature-based Solutions (NbS) to address the UHI effect is often advocated in the literature but there are few accounts of these interventions in high-density historical cities. This study focuses on Cottonera, a densely populated urban area with extensive soil sealing and low natural cooling capacity on the island of Malta. Since many residents already place potted plants in the streetscape outside their homes, this informal urban greening of public space provides a currently untapped resource which could be maximised to form coordinated NbS in terventions to cool the streetscape. To explore this possibility, the vegetation placed in the streetscape is surveyed for its current and potential capacity to provide shading to pedestrians, whilst an analysis of the spatial con straints of the urban fabric informs appropriate interventions for the case study area. Residents are asked for their thoughts on urban greening and their willingness to participate in such a project as an initial step towards a participatory planning approach. Three types of NbS are proposed that could be co-implemented alongside the community to achieve place-based hybrid NbS

    FIGURE 2 in The bees (Hymenoptera: Apoidea) of the Maltese Islands

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    FIGURE 2. Diversity of bee fauna in Mediterranean islands as a function of island area. The point for bee species richness in Malta is shown in grey (data sources are shown in Table 2).Published as part of Balzan, Mario V., Rasmont, Pierre, Kuhlmann, Michael, Dathe, Holger, Pauly, Alain, Patiny, Sébastien, Terzo, Michael & Michez, Denis, 2016, The bees (Hymenoptera: Apoidea) of the Maltese Islands, pp. 225-244 in Zootaxa 4162 (2) on page 239, DOI: 10.11646/zootaxa.4162.2.2, http://zenodo.org/record/25573

    Megachilidae

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    Megachilidae Osmia (Osmia) tricornis (Latreille 1811) Previous Reports: Alfken (1929) Distribution: West Mediterranean Basin, Corsica, and Sardinia. Osmia tricornis has often been confounded with closely related O. kohlii, which occurs in Malta and Sicily. However, these two species show an allopatric distribution (Müller, 2015). Megachile argentata (Fabricius, 1793) Previous Reports: Valletta (1971) Distribution: Algeria, Hungary The species M. argentata has often been confounded with Megachile leachella (Curtis, 1828) (Schwarz and Gusenleitner 2011), but the latter has not been recorded from the Maltese Islands. M. leachella is present in Continental Europe and North Africa.Published as part of Balzan, Mario V., Rasmont, Pierre, Kuhlmann, Michael, Dathe, Holger, Pauly, Alain, Patiny, Sébastien, Terzo, Michael & Michez, Denis, 2016, The bees (Hymenoptera: Apoidea) of the Maltese Islands, pp. 225-244 in Zootaxa 4162 (2) on page 238, DOI: 10.11646/zootaxa.4162.2.2, http://zenodo.org/record/25573

    FIGURE 1. A in The bees (Hymenoptera: Apoidea) of the Maltese Islands

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    FIGURE 1. A map of the Maltese Islands showing locations from where the specimens included in this paper were collected: 1—Addolorata Cemetery; 2—Baħrija; 3—Balluta; 4—Buġibba; 5—Buskett; 6—Ċirkewwa; 7—Delimara; 8—Ħad-Dingli; 9—Fawwara; 10—Fiddien; 11—Għadira; 12—Għajn Rihana; 13—Għammieri, Ħal Qormi; 14—Għar Dalam, Birżebbuġa; 15—Għar Lapsi; 16—Għargħur; 17—Ħal Għaxaq; 18—Gwardamangia; 19—Marsascala; 20—Miġra l-Ferħa; 21—Imtaħleb; 22—Qattara (Gozo); 23—Ħal Qormi; 24—Rabat; 25—St. Julian's; 26—Ta' Qali; 27—Tal-Qroqq, Msida; 28—Wied il-Għasel, il-Mosta; 29—Wied il-Qlejgħa, Rabat; 30—Wied l-Aħmar (Comino); 31—Xlendi (Gozo); 32—Marsaxlokk.Published as part of Balzan, Mario V., Rasmont, Pierre, Kuhlmann, Michael, Dathe, Holger, Pauly, Alain, Patiny, Sébastien, Terzo, Michael & Michez, Denis, 2016, The bees (Hymenoptera: Apoidea) of the Maltese Islands, pp. 225-244 in Zootaxa 4162 (2) on page 227, DOI: 10.11646/zootaxa.4162.2.2, http://zenodo.org/record/25573

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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

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    We 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

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    We 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
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