1,720,981 research outputs found
I will trade, just not today: Individual investor trading activity around birthdays
Get PDFIn this paper we provide new evidence of investor inattention by showing that personal occurrences such as birthdays are able to drive attention away from the stock market. We document that individual investors significantly reduce their trading activity in the 3 days around their birthday. The reduction in the propensity to trade is larger for more active traders, in the event of a decade birthday and when this celebrative event falls on a Friday. Results are robust to analyses focusing only on days when investor attention should be at its peak, as expressed by excess news coverage and trading volumes
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Life Cycle Assessment as a decision support tool in the Waste Management sector: a Critical Review
No full textThe purpose of the paper is to present the most recent studies, published in the leading scientific journals, concerning with the application of the Life Cycle Assessment methodology in the solid waste management sector.
First of all, there is an introduction of the current trends of the life cycle analysis in this field, coming from a detailed survey on the LCA studies published in the last five years in the main scientific journals dealing with LCA methodologies and waste management.
The methodology is to identify and describe, for each article, the aim and purpose, the chosen approach, the data and models used, the results obtained and finally the conclusions. For a greater clarity the literature review is made by dividing the LCA studies into different areas: studies of the solid waste management in a broader sense, studies on thermal treatment of waste, studies of specific fractions of waste and studies related to specific processes.
After a presentation of the main common characteristics of every category of articles, a summary is given in order to highlight some common suggestions in the conduction of a life cycle assessment study, coming from this analysis, according to the different aspects: typology of the study (namely if it is a single process-oriented analysis rather than at strategic level), methodology (avoided impacts approach, hypothesis and assumption, data) and results (including the main remarks coming from the life cycle assessment).
As a result the literature review shows that conducting a LCA study in the waste management sector is a still time demanding and complex task, because of the complexity of the systems and the different aspect that have to be taken into account. To conclude some remarks are given on how to perform an LCA study in this sector, with regard to the system boundaries (need to include as much operations as possible, namely, collection, transport, typology of garbage bins), data (prefer site-specific data, including a waste analysis in different times during a year in order to define a medium composition), functional unit (which should be accurately defined in accordance with the scope of the study, considering the possible future variations), hypothesis (which should be accurate with special regard to the National energetic mix, the quality of the waste) and finally methodology (optional step in LCIA phase, sensitivity analysis, including economical considerations)
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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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