著者

Masayuki Hatta

出版者

Global Business Research Center

雑誌

Annals of Business Administrative Science (ISSN:13474464)

巻号頁・発行日

vol.19, no.6, pp.277-292, 2020-12-15 (Released:2020-12-15)

参考文献数

11

被引用文献数

3 9

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Recently, online black markets and anonymous virtual currencies have become the subject of academic research, and we have gained a certain degree of knowledge about the dark web. However, as terms such as deep web and dark net, which have different meanings, have been used in similar contexts, discussions related to the dark web tend to be confusing. Therefore, in this paper, we discuss the differences between these concepts in an easy-to-understand manner, including their historical circumstances, and explain the technology known as onion routing used on the dark web.

著者

Masayuki Hatta

出版者

Global Business Research Center

雑誌

Annals of Business Administrative Science (ISSN:13474464)

巻号頁・発行日

vol.21, no.5, pp.91-102, 2022-10-15 (Released:2022-10-15)

参考文献数

14

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In the world of open source constructed on the basis of the Unix philosophy, there are cases of unsung heroic programs in obscure locations being maintained in a detailed way by a single unknown person or a small number of unknown people, mainly for personal reasons. However, if once these small programs close to the bottom rung of the ladder break, it may cause a loss of balance and collapse of our entire modern infrastructure. This is referred to as the Nebraska Problem in this paper. We can see from the actual and serious case of the Heartbleed bug that “the number of eyeballs” taken for granted in Linus's Law up to this point needs to be proactively secured, and we need to consider complementary measures, such as SBOM, against risk in advance.

著者

Masayuki Hatta

出版者

Global Business Research Center

雑誌

Annals of Business Administrative Science (ISSN:13474464)

巻号頁・発行日

vol.19, no.4, pp.143-157, 2020-08-15 (Released:2020-08-15)

参考文献数

19

被引用文献数

1 6

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Creating new products by incorporating new and original ideas derived from learning the internal mechanisms and structures of machines and other objects at hand through the process of repairing or tinkering with them is fundamental to the innovation, which is a staple of human existence. Recently, however, increasing product complexity, technical constraints, and regulations have gradually narrowed the scope of the user's ability to tinker. This aspect has given momentum to the movement to explicitly reclaim the Right to Repair and the Right to Tinker. This paper thus outlines the process that led to recognition of the importance of these rights.

著者

Andrew H. Baird Alasdair J. Edwards James R. Guest Saki Harii Masayuki Hatta Liam Lachs Hanaka Mera Frederic Sinniger David Abrego Or Ben-Zvi Omri Bronstein Patrick C. Cabaitan Vivian R. Cumbo Gal Eyal Lee Eyal-Shaham Bar Feldman Joana Figueiredo Jean-François Flot Mila Grinblat Andrew Heyward Michio Hidaka Mamiko Hirose Akira Iguchi Naoko Isomura Robert A. Kinzie Seiya Kitanobo Alyson Kuba Oren Levy Yossi Loya Takuma Mezaki Amin R. Mohamed Masaya Morita Satoshi Nojima Yoko Nozawa Rian Prasetia Eneour Puill-Stephan Catalina Ramirez-Portilla Hanna Rapuano Yaeli Rosenberg Yusuke Sakai Kazuhiko Sakai Tom Shlesinger Tullia I. Terraneo Irina Yakovleva Hiromi H. Yamamoto Kiyoshi Yamazato

出版者

The Japanese Coral Reef Society

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

pp.G2021_S10O, (Released:2021-11-19)

参考文献数

27

被引用文献数

9

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Sesoko Station, Okinawa, has been the site of many significant advances in coral reproductive research and it continues to be a preferred destination for both Japanese and international researchers. Consequently, there are decades of spawning observations, which we present and explore here with the aim of making it easier to predict when species spawn at Sesoko Station. The data include over 700 spawning observations from 87 species of reef-building hermatypic corals. Almost all spawning occurred between dusk and dawn, with most spawning activity concentrated in the 2 to 4 hours after sunset. Some phylogenetic patterns were evident: most Acropora species spawn on or around the 6th full moon after December 21st (the northern hemisphere winter solstice); spawning in common species of merulinids and Porites appears to be concentrated around the 7th full moon and spawning in the fungiids around the 8th and subsequent full moons. The night of peak spawning with respect to the night of the full moon varied considerably among years in common Acropora species, but was dependent on the calendar date of the full moon in May or June. Therefore, despite an extended spawning season of over three months and considerable variation in the calendar date of spawning in many species among years, the month and night of spawning are reasonably predictable for many species enhancing the value of Sesoko Station as a site for coral reproductive research.

著者

Masayuki Hatta

出版者

Global Business Research Center

雑誌

Annals of Business Administrative Science (ISSN:13474464)

巻号頁・発行日

pp.0200908a, (Released:2020-12-07)

参考文献数

11

被引用文献数

9

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Recently, online black markets and anonymous virtual currencies have become the subject of academic research, and we have gained a certain degree of knowledge about the dark web. However, as terms such as deep web and dark net, which have different meanings, have been used in similar contexts, discussions related to the dark web tend to be confusing. Therefore, in this paper, we discuss the differences between these concepts in an easy-to-understand manner, including their historical circumstances, and explain the technology known as onion routing used on the dark web.

著者

Masayuki Hatta

出版者

Global Business Research Center

雑誌

Annals of Business Administrative Science (ISSN:13474464)

巻号頁・発行日

vol.17, no.1, pp.31-43, 2018-02-15 (Released:2018-02-15)

参考文献数

16

被引用文献数

1

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This document analyzes the evolution of policy-related discussions in open source software by using several projects’ policy mailing list archives and focusing on the Debian Project. More specifically, it utilizes approximately 70,000 pieces of mail exchanged since the end of the 1990s, investigating the rise and fall in activity and what sort of topics was discussed. The results of this paper’s inquiry suggest that mail volumes peaked in 2005, that policy discussions were led and mainly contributed to by a relatively small subset of persons who only posted related to policy, and that overall mailing list traffic (not only related to policy) declined after 2006, possibly due to a transfer of discussion to Wikis, chats, and other such platforms.

著者

八田 真行 ハッタ マサユキ Masayuki Hatta

雑誌

駿河台経済論集

巻号頁・発行日

vol.26, no.1, pp.93-109, 2016-09