著者
清水 盛生 内藤 均 佐原 宏典 Shimizu Morio Naito Hitoshi Sahara Hironori
出版者
航空宇宙技術研究所
雑誌
航空宇宙技術研究所資料 = Technical Memorandum of National Aerospace Laboratory (ISSN:1347460X)
巻号頁・発行日
vol.769, 2003-03

本資料では、当所において1985年頃から実施された太陽熱スラスタの試作研究について述べる。当初はステンレス鋼を材料とした習作スラスタであり、加熱・噴射試験結果も平凡で、比推力500〜600秒級であった。次段階では物質・材料研究機構が日本および米国の特許を有する単結晶モリブデン材を採用して、超小型(外径約6mm)から大型(外径65mm)までの各種サイズのスラスタの試作・太陽集光加熱・推進剤噴射試験を実施した。この材料では推進剤温度2,300K、比推力800秒が期待できる。これが本資料の主要部である。さらに究極の材料として単結晶タングステンを採用して、比推力1,000秒級に対応可能なスラスタを試作して予備実験を実施した。このスラスタはアポジおよびペリジでの噴射が可能な対向型で、この型の試作・実験結果の発表は世界初と思われる。
著者
藤原 隆男
出版者
岩手大学人文社会科学部
雑誌
歴史と文化
巻号頁・発行日
pp.67-82, 1981-02-20

日清「戦後経営」の諸政策を支えた租税政策の意義については日清「戦後経営」論とし多くの研究が蓄積されてきている。とくに、日清戦後の財政問題を階級対抗の焦点とみなす観点から、地組や国税営業税の意義が解明されてきたが、酒造税を中心とした関接消費税の増税の問題について、石井寛治は最近の研究で「全体として階級対立に深刻な影響を与えたものとして、酒税に代表される関接消費税が相次ぐ増税の結果、租税体系において決定的な重みを持つに至った事実を重視」する見解を出された。たしかに、酒造税の増税にともなう自家用料酒の製造禁止や葉煙草専売は農民経済を圧迫し、葉煙草耕作農民の自給経済の解体に拍車をかけたのである。しかしながら、酒造税を中心とした関接消費税の増徴を可能とした理由は、地租増徴や営業税の国税編入反対運動にみられたのとは異なって、「反対運動が起りにくいという事情に基づいていたといえよう」という評価は少なくとも酒造税に関してみるかぎりでは一面的であるといわねばならない。
著者
浅野 健一 李 其珍 森 類臣 Kenichi Asano Kijin Lee Tomoomi Mori
出版者
同志社大学人文学会
雑誌
評論・社会科学 = Hyoron Shakaikagaku (Social Science Review) (ISSN:02862840)
巻号頁・発行日
no.74, pp.1-108, 2004-12-20

"OhmyNews" is an independent Internet newspaper in the Republic of Korea, and as such it wields great influence now. It is reportedly the largest Internet newspaper in the world. Five years ago, OhmyNews was published by four professional reporters and 727 "citizen reporters." The number of OhmyNews citizen reporters has grown to more than 35,000 today. Mr. Oh Yeon-Ho, founder and chief representative of OhmyNews, gave a lecture at Doshisha University on 15 September 2004. We could hold a subject of inquiry on alternative media from Mr. Oh's lecture and could interview him. We found that, in fact, the success of OhmyNews is a remarkable accident in the world of journalism. So much so that many big media outlets in the world, such as the New York Times, Washington Post, CNN and BBC have covered Mr. Oh's experimental challenge and his success with OhmyNews. We consider one of the big achievements of OhmyNews to be the abolition of the closed system of press clubs in Korea known (in Japanese) as Kisha Clubs. We thus refer to Internet newspapers in the Republic of Korea (especially OhmyNews) and Kisha Clubs in this article. As to why "OhmyNews" succeeded, we can point to several reasons. The most important reason, however, is the existence of the "prepared citizen" in the Republic of Korea. In the Republic of Korea, through a long fight for democratization, people have come to not believe in the traditional corporate media. The corporate media is identified in the public mind as standing by the "powers that be" and not reporting the truth. Consequently, people in Korea have held high expectations for the appearance of alternative news media. Many people harbor a strong will to change their society, and they can do so by supporting OhmyNews and participating in it as "citizen reporters." OhmyNews operates on the basis of several important concepts, the most important being : "Every citizen is a reporter." Mr. Oh explained that "This concept is the most characteristic" of OhmyNews. The traditional corporate media represents journalism of the 20th century. It is a one-way stream in which professional reporters write articles and the reader only reads it. But OhmyNews is breaking that cycle of 20th century journalism. OhmyNews has made journalism a two-way stream in which the reporter is reader, and the reader is reporter. The system of Kisha Clubs is a unique system in Japan and the Republic of Korea. It is an exclusive and conservative system which excludes non-member reporters. Mr. Oh of OhmyNews had successfully sued for abolition of the Kisha Clubs in Korea, and following that, President Roh Moo-Hyon abolished the Kisha Clubs of the country's central administrative offices. This dismantling of Kisha Clubs is rapidly advancing in the Republic of Korea. Yet in Japan it is not advancing at all, rightly inviting criticism of Japan's press system. But that does not appear to faze Japanese reporters of the corporate media and some Japanese scholars, who insist that Kisha Clubs are the most proper system for Japan. By contrast, abolishing the Kisha Clubs in Korea is the result of strenuous efforts by alternative media such as OhmyNews and a large number of supporters. All of which begs the questions : What benefits do we receive from the Japanese press club system? And what needs to be done to eliminate this outdated, injurious system? We dare to envision the kind of journalism in which people take part -as with OhmyNews- and at the same time, we aim to solve the many problems of journalism in Japan, above all permanently dissolving the Kisha Club system.
著者
髙橋 和子 江間 諒一
雑誌
スポーツと人間 静岡産業大学 = Sports and human beings
巻号頁・発行日
vol.7, no.1, pp.1-16, 2022-09-30

The purpose of this study was to clarify how "Jubilo-Meshi" (the meaning of " Meshi" is mealin Japanese), a product of the Health and Wellness Project, came into being and its ripple effects. The "Jubilo-Meshi" was a collaboration among Iwata City, Shizuoka Sangyo University, ShizuokaPrefectural College of Agriculture, Forestry, and Environmental Science, Jubilo IWATA, the IwataChamber of Commerce and Industry, and local businesses, aiming to improve local health andstimulate the economy through food and sports. The "Jubilo-Meshi" was born after one year ofdiscussions starting in 2020. Research methods included organizing project meeting materials andconducting semi-structured interviews with relevant parties. The followings became clear(: 1)the social significance of disseminating "Jubilo-Meshi"(, 2)improvement of local health and revitalization of the local economy(, 3)promotion of physical activityand food education(, 4)presentation of a role model for sustainable activities(, 5)branding of theuniversity and promotion of research by students and faculty, and(6)induction of public awarenessthrough information dissemination. The above results indicate that "Jubilo-Meshi" has become a fixture in Iwata City and has spreadthrough the city in various ways, thanks to the fact that Iwata City has become Japan's No. 1 "sportstown" image.
著者
中村 俊太 近藤 岳 並木 美砂子
雑誌
帝京科学大学教育・教職研究 = Journal of educational research and teacher development, Teikyo University of Science (ISSN:2433944X)
巻号頁・発行日
vol.6, no.2, pp.79-85, 2021-03-31

日本の動物園で単独飼育されているゾウは,国際的な飼育基準から動物福祉上の問題を指摘されているが,アジアゾウを単独飼育している甲府市の動物園では,飼育環境を豊かにする試み(エンリッチメント)を継続している.本学動物園動物学研究室は,2018年から2020年にかけて卒業研究の一環で行動調査を継続してきたので,その成果を報告する.調査方法は直接観察により,分析は,エンリッチメント導入の前後期間で行動発現割合を比較することによった.その結果,鼻での操作・砂浴び・採食の発現割合が有意に増加し,常同行動・移動・立ち止まりの発現割合が有意に減少した.また,常同行動の発現割合を時間帯別に比較したところ,飼育者から直接的ケアを受けることも常同行動減少に効果的であることが示唆された.今後は,ケアの内容も含め,さまざまな行動レパートリーが増えるようなエンリッチメントの工夫に対する調査が必要である.
著者
Naoki Matsumoto Akihiro Suda
雑誌
研究報告システムソフトウェアとオペレーティング・システム(OS) (ISSN:21888795)
巻号頁・発行日
vol.2022-OS-156, no.9, pp.1-7, 2022-07-20

”Rootless containers” is a concept to run the entire container runtime and containers without the root privileges. It protects the host environment from attackers exploiting container runtime vulnerabilities. However, when rootless containers communicate with external endpoints, the network performance is very low compared to rootful containers because of the overhead of the user-land TCP/IP implementation called ”slirp4netns”. In this paper, we propose ”bypass4netns” that accelerate TCP/IP communications in rootless containers by bypassing slirp4netns. bypass4netns uses sockets allocated on the host. It switches socket file descriptors in containers to the host's socket file descriptors by intercepting syscalls and injecting the file descriptors, using ioctl (SECCOMP_IOCTL_NOTIF_ADDFD). We confirmed that rootless containers with bypass4netns can achieve more than 10 times faster throughput than rootless containers without it.
著者
Key Margaret
出版者
国文学研究資料館
雑誌
国際日本文学研究集会会議録 = PROCEEDINGS OF INTERNATIONAL CONFERENCE ON JAPANESE LITERATURE (ISSN:ISSN0387)
巻号頁・発行日
no.25, pp.39-48, 2002-03-01

Critics have frequently noted Abe Kôbô's technique of building a story around a single concrete object, such as a mask or a map, used metaphorically. What is often overlooked, however, is that in many of Abe's novels the object functions not merely as a concrete representation of a certain theme within the novel, but also as a meta-fictional representation of the text itself, in particular, of the relationship between the reader and the text. The central object in Hako otoko is a cardboard box with a peephole, whose formal characteristics give rise to the novel's central thematic of seeing and being seen and of concealing and revealing. At the meta-fictional level, the box is manifested as a three-dimensional puzzle box, or "Chinese box," reflecting the complex narrative structure of multiple, overlapping plots. By focusing on the figure of the box as puzzle or mystery, this paper will consider Hako otoko as an anti-detective novel: a novel that frustrates the reader's desire to solve the mystery of the text. I will discuss the mysteries hidden within the box at the textual and meta-fictional levels and their ultimate indeterminability.In Hako otoko the reader's desire is directed at uncovering the identity of the box man who writes, “Inside my box, I am writing a record of a box man.” As the narrative progresses, however, the reader realizes not only that the box man is a murderer, but also that he is writing the text that the reader is reading in order to conceal evidence of the murder. Consequently, the mystery of the man inside the box becomes, at the meta-fictional level, the mystery of the man outside the box, that is, the author of the text. By examining Abe's use of elements of detective fiction, such as the search for the solution to a mystery and the revelation of hidden truths, both within the narrative and in the interaction between the reader and the text, this paper will bring attention to the meta-fictional nature of Abe's literary project.
著者
戸井田 克己
出版者
近畿大学総合社会学部
雑誌
総社る: Social=近畿大学総合社会学部紀要 = Applled sociology reserch review Kinki University
巻号頁・発行日
vol.1, no.1, pp.3-21, 2011-08-01

[Abstract] In this paper, I would like to study the cultural position of Iki Shochu, a distilled liquor, a spirit native only to Iki Island, Nagasaki prefecture, Japan. Iki Shochu is made from barley, rice, and water, and has a tradition of over 400 years. At present, there are four Shochu brands protected as geographic indications by the World Trade Organization (WTO). They are "Iki Shochu," "Kuma Shochu," "Satsuma Shochu," and "Ryukyu Awamori." In the four production regions, distilleries of Iki Shochu are distributed most densely, and distilleries of Satsuma Shochu most sparsely. In this paper, I will first organize the historical development of the culture of Japanese Shochu manufacture, and then consider the position of Iki Shochu. Iki may be the terminal of the spread of Shochu both from Southeast Asia and the Korean Peninsula. The Southeast Asia route ran through Ryukyu (Okinawa); therefore, the Japan Current (Kuroshio) and Tsushima Current (Aoshio) played a large role in its arrival on Iki Island.
著者
長沼 健
雑誌
情報処理
巻号頁・発行日
vol.61, no.2, pp.152-158, 2020-01-15

本稿では,匿名送金機能を持つ代表的な暗号通貨Zcashと,その基盤技術であるゼロ知識証明:zk-SNARKを暗号技術の非専門家向けに解説する.また,このような匿名性の高い暗号通貨が,マネーロンダリングなどの不正な送金手段として利用される恐れが指摘されているが,ゼロ知識証明を用いることで,適切な監査機能を実現可能なことも紹介する.
著者
阿部 花南 築舘 多藍 桑宮 陽 横山 幸大 越後 宏紀 小林 稔
雑誌
情報処理学会論文誌 (ISSN:18827764)
巻号頁・発行日
vol.63, no.9, pp.1547-1557, 2022-09-15

会議やグループワーク等複数人で行われる議論の場において,沈黙が生じることで会議が円滑に進まず,有意義な議論を行うことができないという問題が起こることがある.この原因の1つとして,会議参加者の気持ちが参加者間で共有されず,議論を深めるべきなのか,次の話題に進めるべきか,の判断が困難であることがあると考える.この問題を解決するために本研究では,意思決定型会議を対象に,会議進行に影響する意思を「気持ち」と定義し,賛同します・反対します・意見あります,の3つの気持ちの可視化を支援するボタンを参加者に使用させることで,会議進行を円滑にする方法について検討した.提案システムを用いた評価実験の結果,参加者の主観評価において「活発に議論ができたこと」と「参加者間で意思の疎通が取れていること」の2つの観点で,システムの使用条件と不使用条件の間に有意差が認められた.本論文では,評価実験の結果を報告し,可視化すべき気持ちの種類やユーザインタフェース,議論に与えた影響について議論する.
著者
加藤 尚裕 Takahiro Kato
雑誌
国際経営・文化研究 = Cross-cultural business and cultural studies (ISSN:13431412)
巻号頁・発行日
vol.18, no.1, pp.17-28, 2013-11-01

This study purports to reveal incipient scientific thinking observed in children’s daily plays which bring forth their interest in things and phenomena, and lead them to pursuing their spontaneous approaches to problems and questions.The author let preschool five-year-old children take part in sandbox play, soap bubble play, playing in the water color and mud ball play. I came to the following conclusion after analyzing children’s utterances and conversations during these plays.(1) I observed a lot of “temporary expression utterances” in sandbox play, soap bubble play, and playing in the water color. They are suitable teaching materials for developing incipient scientific thinking. In mud ball play, children make more utterances for building good friendly relations and cooperation than the utterances which cultivate incipient scientific thinking. The play is appropriate for building children’s social skills.(2) In mud-box play and color-water play, “temporary expression utterances” are often made. These plays are appropriate for cultivating awareness which will make up a significant part of the basic incipient scientific thinking itself. In mud ball play, on the other hand, “fundamental scientific utterances” often are made. It is a suitable play for nourishing incipient scientific thinking, while in soap bubble play, children often make “temporary expression utterances” and “fundamental scientific utterances”.