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An overview of the main Late Devensian glaciation of the Central Grampian Highlands
Full text linkThe location of the Monadhliath Mountains in the middle of the Grampian Highlands
places them in a central zone with respect to ice flow pathways during the maximum
extent of the last British and Irish Ice Sheet (BIIS) in the Late Devensian. At the ice
sheet maximum the Scottish mainland was probably entirely submerged beneath ice,
which flowed north-westwards out to the continental shelf break, merging with
Scandinavian ice occupying the North Sea basin (Bradwell et al., 2008). This period
roughly equates with the global Last Glacial Maximum (LGM), 28,000-22,000 years
ago (Mix et al. 2001). The most recent model of the BIIS (Clark et al., 2012) places
the Monadhliath Mountains immediately to the east of the main north-south ice divide
of the Scottish ice sheet, and north of a subsidiary west-east divide, centred over the
East Grampian and Cairngorm mountains. Geomorphological evidence for ice
streaming in the Great Glen and Spey Valley to the northeast and southwest of the
Monadhliath massif indicates a general ice flow direction towards the northeast across
the region, supporting this ice-divide positioning
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
Evidence for active ice retreat and ice-dammed lake formation during deglaciation in Raitts Burn
Full text linkThe Speyside area of the southern Monadhliath Mountains displays an exceptionally welldeveloped
suite of landforms and deposits that formed during the latter stages of Late
Devensian glaciation in this part of Scotland (Young, 1978; Hinxman and Anderson, 1915;
Merritt et al., this guide). This section of the field guide describes the glacial landforms and
sediments present in the valley of Raitts Burn (NH 760 047 – 796 036). The burn flows
south-eastwards across the north-western flank of Strathspey to join the valley of the River
Spey c. 3 km downstream of Kingussie (Fig. 1). Exposed in the cliff sections cut by the burn
is a sequence of rhythmically laminated clays, silts and sands, interbedded with ice-proximal
diamictons and matrix-rich gravels (Auton 1998; Phillips and Auton, 2000). Detailed
examination of the complex suite of sedimentary and glacitectonic structures developed
within these sediments has revealed a complex sequence of depositional and deformational
events recording the formation and overriding of an ice-dammed lake (Phillips and Auton,
2000). The glacial landform record in the area clearly indicates that this complex pattern of
meltwater ponding and ice advance into the lake occurred in response to active ice retreat
during the deglaciation of the Raitts Burn basin
Bedrock geology and physiography of the Monadhliath Mountains
Full text linkThe Monadhliath Mountains comprise of an extensive area of plateau in the Central
Highlands of Scotland, which is bounded to the north by the Great Glen and to the south by
Strathspey. The region is located immediately to the northwest of the Cairngorm Mountains,
to the north of Creag Meagaidh and to the northeast of the Ben Nevis Range, forming a
nearly continuous area of upland from Glen Roy westwards to where the A9 crosses Slochd
Summit (Fig. A).
The upland consists of rounded summits and is dissected by at least twenty-five key
catchments. It is divided to an extent in two by the Corrieyairack pass, forming a much
smaller area of upland in the west, to the north of Glen Roy, and a larger (main) plateau in the
central and eastern part of the region. This main plateau slopes downwards towards the
north, with the altitude of the plateau edge ranging from 900 m in the south, with individual
summits as high as 945 m (Carn Dearg, NH 636 024), to 600 m in the north. As a result, the
main watershed runs from west to east across the southern edge of the plateau, and this
asymmetry is manifest in short, steep catchments on the south side of the plateau, with the
majority of the plateau draining northwards or eastwards within large catchment areas.
Valleys draining the plateau to the south tend to have steep backwalls separating the valley
floor from the plateau above whilst catchments in the north gently rise onto the plateau, often
with no backwall. This asymmetry has significantly affected the form and dynamics of
glaciers in the region and is discussed further by Boston (this guide)
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