1,720,961 research outputs found
Bank acquisitions and shareholder returns
No full textThis paper examines whether acquisitions in the banking sector are associated with positive shareholder returns in the long run. It analyses 17 acquisitions of Greek and foreign banking institutions by six major Greek banks during the 1998-2006 period. The model used is adjusted for market index movements, while autoregressive models are used whenever necessary. The empirical results are interesting since they support the hypothesis that acquisitions are justified in market terms whenever the size of the acquired banks, compared to the acquirer, is small, whereas they are not justified in cases where the acquired bank is relatively large in size. This may be due to the fact that the benefits from an acquisition are not visible or large enough to justify the large, in absolute terms, premium that the acquirer pays.bank acquisitions; capital markets; market efficiency; market returns; valuation; shareholder returns; Greece; financial services management.
'Altman Ζ-score model' and prediction of business failures
No full textThis paper analyses whether Z-score, as examined by Altman and other researchers, can predict correctly company failures. The empirical analysis concentrates on the construction companies listed in Athens Exchange, for the period 1995-2006, which coincides with significant construction activity in Greece. It is investigated whether Z-score models can predict bankruptcies for a period up to eight years earlier. It is derived that a particular Altman model performs well in predicting failures for a period up to five years earlier. This is in line with other findings. The empirical results are interesting as they can be used by portfolio managers in stock selection and by company management for merger decisions or other corporate strategic moves.risk assessment; bankruptcy prediction; valuation; Altman Z-analysis; mergers; acquisitions; portfolio selection; corporate strategy; company failures; failure prediction; Greece; Z-score models; stock selection.
Short selling and equity returns with full information dissemination
No full textThis paper sheds further light on whether short selling can be associated with negative returns in the spot market. It provides evidence for the case of the capital market of the Athens Exchange (ATHEX) that is empirically tested for the first time, during the period 2003–2007. This market possesses certain interesting characteristics, as along with constrained sales it entailed the rare feature of wide short sales transparency. The empirical findings indicate that short selling is associated with subsequent negative abnormal stock returns for the heavily sold short stocks of this market.short selling; spot markets; excess returns; abnormal returns; equity returns; information dissemination; negative returns; capital markets; Athens Exchange; ATHEX; Greece; constrained sales; short sales; transparency; short stocks; stock exchanges; monetary economics; finance.
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
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
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