著者

Michifumi Tokuda Seigo Yamashita Satoko Shiomi Ryutaro Sakurai Hidenori Sato Hirotsuna Oseto Masaaki Yokoyama Kenichi Tokutake Mika Kato Ryohsuke Narui Shin-ichi Tanigawa Michihiro Yoshimura Teiichi Yamane

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

pp.CJ-23-0048, (Released:2023-05-30)

参考文献数

24

被引用文献数

2

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Background: Pulmonary vein stenosis (PVS) after PV isolation (PVI) for atrial fibrillation (AF) is a severe complication that requires angioplasty. This study aimed to compare the reduction of the cross-sectional PV area (PVA) and the incidence of PVS after cryoballoon (CB)-PVI, hot balloon (HB)-PVI, or laser balloon (LB)-PVI.Methods and Results: A total of 320 patients who underwent an initial catheter ablation procedure for AF using a CB, HB, or LB in 2 hospitals were included. They underwent contrast-enhanced multidetector CT before and 3 months after the procedure. In all 4 PVs, the reduction in PVA was more significant in the LB group than in the CB or HB groups, respectively. Moderate (50–75%) and severe (>75%) PVS were observed in 5.3% and 0.5% of the PVs, respectively. Although moderate PVS was more frequently observed in the LB group than in the CB or HB groups (8.2%, 3.8%, and 5.0%; P=0.03), the incidence of severe PVS was similar in the LB, CB, and HB groups (0.3%, 0.5%, and 1.0%; P=0.46). Symptomatic PVS requiring intervention occurred in 1 (0.3%) patient.Conclusions: Although the reduction in cross-sectional PVA and the incidence of moderate PVS after LB-PVI was more significant than after CB-PVI or HB-PVI, it rarely led to severe PVS. Symptomatic PVS requiring intervention was rare after the balloon ablation of AF.

著者

Hidenori SATO

出版者

グローバルビジネスリサーチセンター・東京大学MERC

雑誌

Annals of Business Administrative Science (ISSN:13474464)

巻号頁・発行日

vol.15, no.1, pp.49-58, 2016-02-15 (Released:2016-02-15)

参考文献数

14

被引用文献数

5

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Eisenhardt (1989) is one of the most frequently cited studies on the methodological fundamentals of the case study for theory construction. This paper will first summarize the methodology espoused by Eisenhardt (1989). Eisenhardt suggests nine steps for conducting a case study as an effective research method for theory construction. However, most of the research that cites Eisenhardt only emphasizes generalizability. To be sure, Eisenhardt (1989) takes a stance of positivism and has an awareness of quantitative empirical research. However, he does not necessarily advocate only generalizability. Regardless, some studies that have drawn on Eisenhardt (1989) have emphasized only generalizability. This has the potential of restricting theory construction using case studies.

著者

Nobuyuki INAMIZU Hidenori SATO Fumihiko IKUINE

出版者

Global Business Research Center

雑誌

Annals of Business Administrative Science (ISSN:13474464)

巻号頁・発行日

vol.16, no.1, pp.1-13, 2017-02-15 (Released:2017-02-15)

参考文献数

12

被引用文献数

2 3

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This study presents detailed sales actions through continuous unstructured interviews of practitioners. The results of the study demonstrate that there are five steps in sales: 1) preparation; 2) approaching customers; 3) interview; 4) presentation; and 5) closing. In addition, a questionnaire comprising 142 items for measuring these sales actions was developed based on these five steps, and the questionnaire was given to 107 individuals in eight companies. The results of the questionnaire revealed variances between top and bottom performers, with these variances in the steps prior to the interview, particularly in the preparation stage. This suggests the importance of preparation in sales. The sales skills scale of Rentz, Shepherd, Tashchian, Dabholkar, and Ladd (2002) measured aspects that have no direct relationship with sales and is problematic considering that it may fall into a tautology. The research approach taken herein, where the focus is on these sales actions and the five steps, may resolve the problems inherent to Rentz et al. (2002).

著者

Takeo Kato Hidenori Sato Mitsuru Emi Tomomi Seino Shigeki Arawaka Chifumi Iseki Yoshimi Takahashi Manabu Wada Toru Kawanami

出版者

The Japanese Society of Internal Medicine

雑誌

Internal Medicine (ISSN:09182918)

巻号頁・発行日

vol.50, no.4, pp.297-303, 2011 (Released:2011-02-15)

参考文献数

36

被引用文献数

20 25

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Objective Idiopathic normal pressure hydrocephalus (iNPH) is clinically important as a treatable gait disturbance or preventable dementia by shunt operation. We have recently reported that approximately 1.5% of the elderly living in a Japanese community showed ventriculomegaly with features of iNPH on MRI (VIM), which may represent a preclinical stage of iNPH. The purpose of the present study was to identify a possible genetic change in VIM subjects. Methods Eight subjects with VIM and 10 healthy individuals were examined for copy number variations (CNV) with a CNV-targeted whole-genome oligonucleotide microarray (Agilent 400 K CNV array). Another panel of 100 healthy Japanese individuals was screened for CNV by whole-genome using the deCODE-Illumina CNV 370 K chip. Immunohistochemical examination of the human brain was performed using an avidin-biotin-peroxidase complex method. Results Among several genetic changes observed, a copy number loss within the SFMBT1 gene was seen in half of the VIM cases (4 of 8 cases), that was rare among the Japanese control subjects (0/10 by Agilent 400 K CNV array or 1/100 by deCODE/Illumina CNV 370 K chip). Immunohistochemical examination of the human brain revealed that the SFMBT1 protein was localized mainly in the arterial walls, the ependymal cells, and the epithelium of the choroid plexus, all of which play a crucial role in the CSF circulation. Conclusion A segmental copy number loss of the SFMBT1 gene may be involved in the pathological process in some individuals with VIM/iNPH.

著者

Kaoru Tsuda Hidenori Sato

出版者

Global Business Research Center

雑誌

Annals of Business Administrative Science (ISSN:13474464)

巻号頁・発行日

pp.0200901a, (Released:2020-11-07)

参考文献数

16

被引用文献数

3

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Much research has been conducted on the role of the middle manager; however, most of the studies in research on this topic have focused on the middle manager's managerial work. However, upon surveying 2,183 managers at Japanese firms, we found that 87% of managers were actually engaged in nonmanagerial work. Furthermore, in extreme cases where middle managers responded that there was either not enough or too much non-managerial work, team performance was poor, while in cases where middle managers did an appropriate amount of nonmanagerial work, team performance was good.

著者

Daisuke Kosaka Hidenori Sato

出版者

Global Business Research Center

雑誌

Annals of Business Administrative Science (ISSN:13474464)

巻号頁・発行日

pp.0200911a, (Released:2020-11-01)

参考文献数

25

被引用文献数

5

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Engagement as a concept is gaining attention in research and management practices. However, there are several types of engagement depending on whether the focus is on work and jobs or companies and organizations. In this paper, we demonstrate the following three points based on comparative analysis of the concepts of work engagement and employee engagement: (a) Both terms are used with the same frequency in academic journals in the field of management, but non-academic sources consistently use “employee engagement,” while medical and nursing articles use “work engagement.” (b) “Work engagement” may be used in this way because the term originated in research of burnout among nurses working in hospitals. (c) While much research does not adequately differentiate the two concepts, they should be treated as distinct concepts due to their distinct origins and the content they measure.

著者

Yuki Mitomi Youngkyo Suh Hidenori Sato

出版者

Global Business Research Center

雑誌

Annals of Business Administrative Science (ISSN:13474464)

巻号頁・発行日

pp.0191111a, (Released:2020-01-11)

参考文献数

12

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Japanese whisky now ranks as one of the five major whiskies in the world, but how did it come about? Suntory, which has won several prizes in international competitions since the beginning of the 21st century, was making many types of component whisky in the 1980s, when it was trying to deal with diversifying consumer needs and suffered from declining whisky sales. Ironically, these various malts led to the production of many high-quality blended whiskies, which are now winning prizes in international competitions.

著者

Youngkyo Suh Yuki Mitomi Hidenori Sato

出版者

Global Business Research Center

雑誌

Annals of Business Administrative Science (ISSN:13474464)

巻号頁・発行日

vol.18, no.5, pp.171-181, 2019-10-15 (Released:2019-10-15)

参考文献数

18

被引用文献数

2

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In recent years, global demand for Japanese whisky has been growing. Venture Whisky, a Japanese venture launched in 2004, is a born-global company exporting whiskies since 2006. It was able to win born-global status through resource-based venturing. Although the founder did not inherit assets or control of his family business, he recovered 400 casks of whisky that had once passed into other hands and was able to establish his business with these 400 casks as its basis. It was this “resource-based venturing” that proved to be a critical factor in the company’s success. That is to say, businesses that start with some sort of resource basis have a higher success potential than those starting from scratch, and sticking with succession of the existing business would have hardly led to success. The very key to this success is in resource-based venturing.

著者

Hajime Kato Yoshimi Takahashi Chifumi Iseki Ryosuke Igari Hidenori Sato Hiroyasu Sato Shingo Koyama Muneshige Tobita Toru Kawanami Mitsuyoshi Iino Kenichi Ishizawa Takeo Kato

出版者

The Japanese Society of Internal Medicine

雑誌

Internal Medicine (ISSN:09182918)

巻号頁・発行日

vol.58, no.10, pp.1411-1416, 2019-05-15 (Released:2019-05-15)

参考文献数

37

被引用文献数

32

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Objective Dementia is a major cause of disruption for a healthy life expectancy in Japan. It has been suggested that the number of teeth is a modifiable risk factor for cognitive impairment and dementia. We therefore examined the possible association between the cognitive function and the number of natural and artificial teeth in community-dwelling Japanese elderly individuals. Methods Among the participants in our prospective, community-based study, 210 elderly individuals (103 men and 107 women; 78.1±4.9 years; mean age±standard deviation) underwent both dental examinations and a Mini-Mental State Examination (MMSE), as well as various medical checkups, in 2016 and 2017. Results The number of natural teeth was significantly associated with an individual's MMSE score. The percentage of cognitively normal subjects (MMSE scores: 27-30) decreased significantly with a decrease in the number of natural teeth. Among the MMSE items, the calculation ability was significantly and independently associated with the number of natural teeth. Regression was calculated as the predicted score of MMSE =21+0.3× (years of schooling) +0.1× (number of natural teeth). Among individuals with 19 or fewer natural teeth, those who had a total of 20 teeth or more, including both natural and artificial teeth, had significantly higher MMSE scores than those who had 19 or fewer natural and artificial teeth combined. Conclusion The number of natural teeth was significantly associated with the cognitive function, especially the calculation ability, and the use of artificial teeth was associated with the preservation of the cognitive function in community-dwelling elderly individuals.

著者

Hidenori Sato

出版者

Global Business Research Center

雑誌

Annals of Business Administrative Science (ISSN:13474464)

巻号頁・発行日

vol.18, no.2, pp.65-74, 2019-04-15 (Released:2019-04-15)

参考文献数

31

被引用文献数

3

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In the field of management research, the grounded theory approach (GTA) pioneered by Glaser and Strauss (1967) is frequently cited to assert methodological validity in qualitative theory-building studies, in contrast with quantitative research that uses majority hypothesis validation. Glaser and Strauss eventually came to disagree with each other, and GTA branched into three perspectives. Of these, Strauss and Corbin (1990), which defines coding and other analytical processes in detail, is cited most frequently although the studies that cite it do not necessarily reflect its characteristics. It is, therefore, clear that the differences in these three perspectives are not connected with differences in research methodologies.

著者

Hidenori Sato

出版者

Global Business Research Center

雑誌

Annals of Business Administrative Science (ISSN:13474464)

巻号頁・発行日

pp.0180830a, (Released:2018-09-29)

参考文献数

27

被引用文献数

3

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A call center is a division that specializes in dealing with customers. Early studies on call centers regarded them as strategically important areas that, despite some negative aspects, were acknowledged to possess a certain level of expertise and to have a high degree of autonomy as interfaces for customers. However, this view gradually changed, with call centers coming to be seen as workplaces typified by harsh working conditions and isolated from the other divisions of the company. Therefore, research in recent years has entirely focused on these negative aspects, while ignoring the positive aspects.

著者

Hidenori SATO

出版者

グローバルビジネスリサーチセンター・東京大学MERC

雑誌

Annals of Business Administrative Science (ISSN:13474464)

巻号頁・発行日

vol.13, no.5, pp.271-281, 2014-05-26 (Released:2014-10-15)

参考文献数

28

被引用文献数

2 4

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Organizational identity is a set of characteristics that reflect an organization's distinctiveness. The solution to the issues of organizational identity requires an individual and specific comprehension. Therefore, cross-sectional quantitative research for a pre-established category established by the researcher was difficult to perform. As a result, until now, the mainstream organizational identity studies have been qualitative rather than quantitative. However, while one aspect of organizational identity studies is to solve the question of organizational identity itself, another aspect is to solve the question of its impact on the organization. Qualitative methods may be appropriate to solve the question of organizational identity itself, but quantitative methods are better suited to solve the question regarding its organizational impact. In other words, it is possible to utilize qualitative methods to comprehend an organization's identity while using quantitative methods, for example, to measure the organizational identification of its members and conflicts that arise from the differences in directivity among its members. Research utilizing quantitative methods of this type may increase in the future.

著者

Hidenori SATO

出版者

グローバルビジネスリサーチセンター・東京大学MERC

雑誌

Annals of Business Administrative Science (ISSN:13474464)

巻号頁・発行日

vol.13, no.3, pp.141-151, 2014-06-15 (Released:2014-06-15)

参考文献数

19

被引用文献数

6 8

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Changes in organizational identity have been a particular focus of discussion in research to date. Prior studies have noted that organizational identity changes through interactions with images from external sources and that this changes behavior in organizations. However, because it is unclear what agent is choosing a new organizational identity, the dynamism of the phenomena is not well understood. Thus, when considering changes in organizational identity, why a particular organizational identity is selected and a determination of whether there are changes are necessarily vague. This study asserts the importance of managers as agents of choice in understanding changes in organizational identity. Within organizations, a better understanding is required regarding the role of higher-level managers in an organizations hierarchy in the process of political negotiations and decision making, in which a certain organizational identity acquires legitimacy.