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    Changes in the number and area of italian glacers between 1958 and 1989

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    A comparison is made between the data for the year 1958 shown in the Register of Italian Glaciers and the updated Survey prepared from aerial photos taken in 1989 and published by the Ministry for the Environment in 1993. Variations in the number (+ 118 units) and area (-2005 hectares) of the glaciers on the Italian side of the Alps are assessed to determine their relation to slope exposure. The conclusion is drawn that exposure provides the main explanation of the fluctuations in the glaciated areas during these 31 years

    Changes in the number of area of Italian alpine glaciers between 1958 - 1989

    No full text
    A comparison is made between the data for the year 1958 shown in the Register of Italian Glaciers and the updated Survey prepared from aerial photos taken in 1989 and published by the Ministry for the Environment in 1993. Variations in the number (+ 118 units) and area (- 2005 hectares) of the glaciers on the Italian side of the Alps are assessed to determine their relation to slope exposure. The conclusion is drawn that exposure provides the main explanation of the fluctuations in the glaciated areas during these 31 years

    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
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