1,720,954 research outputs found
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
Phenology, growth and drought responses of Platanus acerifolia in urban environment
No full textUrbanization leads to environmental changes, such as increasing temperatures (heat island effect), pollution, massive soil sealing, and altered hydrology. Urban trees play a key role in mitigating these negative effects by providing essential ecosystem services. As climate change effects are even more pronounced in urban environments, research on urban trees will be important for the future. While there is extensive literature on urban greening, knowledge about the physiological aspects of urban trees remains limited. In this master thesis, the phenology, growth, and drought responses of Platanus acerifolia were studied under contrasting conditions in the Alpine city of Innsbruck.
Environmental parameters and soil properties at several study sites were assessed, and climate data were recorded during 2024. In spring, bud burst and leaf development were observed, while in autumn, leaf shedding was evaluated. Tree stem increment was measured throughout the growing season using band dendrometers. During a drought period in August, additional measurements of soil moisture content, predawn and midday water potential, stomatal conductance, and photosystem II efficiency were performed.
No differences in phenological patterns (timing of bud burst, leaf development, and shedding) were observed across the sites. However, in May, all trees showed significant leaf damage, and some individual trees exhibited premature leaf shedding in summer. Daily stem increment was positively correlated with precipitation across all study trees. Soil quality had influence on annual stem growth, while traffic intensity showed no correlation with increment. During the drought period, soil moisture content was correlated with soil sealing, and midday water potential was negatively correlated with stomatal conductance and soil sealing (except one tree).
Performed analyses revealed that the phenological dynamics of Platanus acerifolia were hardly influenced by site specific conditions. In contrast, growth varied remarkably across sites with soil quality being important for annual increment. During drought, responses in water potential and stomatal conductivity indicated drought stress at some sites. This study demonstrates that urban trees are exposed to intense stresses which affect their vitality. Understanding physiological responses is crucial, as healthy trees are essential for resilient urban areas.Elsa PlatzgummerMasterarbeit Universität Innsbruck 202
Phenology, growth and drought responses of Platanus acerifolia in urban environment
No full textUrbanization leads to environmental changes, such as increasing temperatures (heat island effect), pollution, massive soil sealing, and altered hydrology. Urban trees play a key role in mitigating these negative effects by providing essential ecosystem services. As climate change effects are even more pronounced in urban environments, research on urban trees will be important for the future. While there is extensive literature on urban greening, knowledge about the physiological aspects of urban trees remains limited. In this master thesis, the phenology, growth, and drought responses of Platanus acerifolia were studied under contrasting conditions in the Alpine city of Innsbruck.
Environmental parameters and soil properties at several study sites were assessed, and climate data were recorded during 2024. In spring, bud burst and leaf development were observed, while in autumn, leaf shedding was evaluated. Tree stem increment was measured throughout the growing season using band dendrometers. During a drought period in August, additional measurements of soil moisture content, predawn and midday water potential, stomatal conductance, and photosystem II efficiency were performed.
No differences in phenological patterns (timing of bud burst, leaf development, and shedding) were observed across the sites. However, in May, all trees showed significant leaf damage, and some individual trees exhibited premature leaf shedding in summer. Daily stem increment was positively correlated with precipitation across all study trees. Soil quality had influence on annual stem growth, while traffic intensity showed no correlation with increment. During the drought period, soil moisture content was correlated with soil sealing, and midday water potential was negatively correlated with stomatal conductance and soil sealing (except one tree).
Performed analyses revealed that the phenological dynamics of Platanus acerifolia were hardly influenced by site specific conditions. In contrast, growth varied remarkably across sites with soil quality being important for annual increment. During drought, responses in water potential and stomatal conductivity indicated drought stress at some sites. This study demonstrates that urban trees are exposed to intense stresses which affect their vitality. Understanding physiological responses is crucial, as healthy trees are essential for resilient urban areas.Elsa PlatzgummerMasterarbeit Universität Innsbruck 202
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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