1,721,006 research outputs found
Mergers, Innovation, and Productivity: Evidence from Japanese manufacturing firms
Full text linkWe investigate the impact of merger on innovation and efficiency using a micro dataset of Japanese manufacturing firms including unlisted firms during the period of 1995-1999. We find that the acquirer's total factor productivity (TFP) decreases immediately after mergers and does not significantly recover to the pre-merger level within three years after mergers. We also find that the R&D intensity does not significantly change after mergers in spite of a significant increase in the debt-to-asset ratio. Our results suggest that the costs of business integration are large and persistent. To take into considering large integration costs, we also analyze the post-merger performance from one year after mergers, finding no significant increase in TFP or R&D intensity up to three years after mergers. Given the heterogeneity of mergers, we analyze the post-merger performance by classifying merger types. We find that the recovery of TFP after mergers is significant for mergers across industries or within the same business group, suggesting that a synergy effect works well and integration costs are small for those types of mergers.
Corporate governance in the Italian banking system
No full textIl contributo illustra la struttura di corporate governance delle banche italiane e la sua evoluzion
Consolidation of Banks in Japan: Causes and Consequences
Full text linkWe investigate the motives and consequences of the consolidation of banks in Japan during the period of fiscal year 1990-2004 using a comprehensive dataset. Our analysis suggests that the government's too-big-to-fail policy played an important role in the mergers and acquisitions (M&As), though its attempt does not seem to have been successful. The efficiency-improving motive also seems to have driven the M&As conducted by major banks and regional banks in the post-crisis period, while the market-power motive seems to have driven the M&As conducted by regional banks and corporative (shinkin) banks. We obtain no evidence that supports managerial motives for empire building.
Investigation into the Optimal Strategy of Radium-223 Therapy for Metastatic Castration-Resistant Prostate Cancer
No full text主査：石井一成 教授 学内授与番号：医第1403号
Yasuo Oguma, Makoto Hosono, Kaoru Okajima, Eri Inoue, Kiyoshi Nakamatsu, Hiroshi Doi, Tomohiro Matsuura, Masahiro Inada, Takuya Uehara Yutaro Wada, Aritoshi Ri, Yutaka Yamamoto, Kazuhiro Yoshimura, Hirotsugu Uemura, Yasumasa Nishimura" Investigation into the Optimal Strategy of Radium-223 Therapy for Metastatic Castration-Resistant Prostate Cancer" Radiation 2022, Volume 2, Issue 3, 273-284
https://doi.org/10.3390/radiation2030021 掲
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
Investigation into the Optimal Strategy of Radium-223 Therapy for Metastatic Castration-Resistant Prostate Cancer
Full text link近畿大学Kindai University博士（医学）主査：石井一成 教授 学内授与番号：医第1403号
Yasuo Oguma, Makoto Hosono, Kaoru Okajima, Eri Inoue, Kiyoshi Nakamatsu, Hiroshi Doi, Tomohiro Matsuura, Masahiro Inada, Takuya Uehara Yutaro Wada, Aritoshi Ri, Yutaka Yamamoto, Kazuhiro Yoshimura, Hirotsugu Uemura, Yasumasa Nishimura" Investigation into the Optimal Strategy of Radium-223 Therapy for Metastatic Castration-Resistant Prostate Cancer" Radiation 2022, Volume 2, Issue 3, 273-284
https://doi.org/10.3390/radiation2030021 掲載doctoral thesi
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
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