著者

Akiba Kazuto Miyake Atsushi Yaguchi Hiroshi Matsuo Akira Kindo Koichi Tokunaga Masashi

出版者

The Physical Society of Japan

雑誌

Journal of the Physical Society of Japan (ISSN:13474073)

巻号頁・発行日

vol.84, 2015-04-24

被引用文献数

33

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The in-plane resistivity, Hall resistivity, and magnetization of graphite were investigated in pulsed magnetic fields applied along the c-axis. The Hall resistivity approaches zero at approximately 53 T where the in-plane and out-of-plane resistivities steeply decrease. The differential magnetization also shows an anomaly at around this field with an amplitude similar to that of de Haas–van Alphen oscillations at lower fields. This transition field appears insensitive to disorder, but reduces with hole doping. These results suggest the realization of the quantum limit states above 53 T. As a plausible explanation for the observed gapped out-of-plane conduction above 53 T, the emergence of the excitonic BCS-like state in graphite is proposed.UTokyo Research掲載「量子極限状態における励起子のBCS的状態の可能性」 URI: http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/possible-excitonic-bcs-like-state-in-the-quantum-limit-state.htmlUTokyo Research "Possible excitonic BCS-like state in the quantum limit state" URI: http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/possible-excitonic-bcs-like-state-in-the-quantum-limit-state.html

著者

水野 晴光 Mizuno Harumitsu

出版者

神奈川大学外国語研究センター

雑誌

NEWS LETTER

巻号頁・発行日

vol.5, pp.2-3, 1990-03

著者

森崎 綾

出版者

純真学園大学

雑誌

純真学園大学雑誌 = Journal of Junshin Gakuen University, Faculty of Health Sciences (ISSN:21866481)

巻号頁・発行日

no.2, pp.093-096, 2013-03

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要旨 : 私たちが生活をしている現代環境はさまざまな電磁波がありとあらゆるところを飛び回っている世界である。それは, 医療現場においても例外ではなく, 病院内もさまざまな電波に取り囲まれた環境にある。極端にいえば, 電気照明ひとつをとっても電磁波を発生しているのである。今回, 医療機器を中心として医療現場における電磁環境について検討した。Abstract : Various electromagnetic waves exist in our daily life, no exception with healthcare facilities. Even through the electric illuminations have electromagnetic waves. this study investigated the electromagnetic environment in healthcare facilities containing medical equipment.

著者

森石 丈二 住吉 徹是 黒田 重史 斉井 政憲

出版者

千葉大学

雑誌

千葉医学雑誌 (ISSN:03035476)

巻号頁・発行日

vol.69, no.2, 1993-04-01

著者

(明) 胡廣 等奉勅撰

巻号頁・発行日

vol.[7], 1526

著者

Yoshimi R. Tsukazaki A. Kozuka Y. Falson J. Takahashi K. S. Checkelsky J. G. Nagaosa N. Kawasaki M. Tokura Y.

出版者

Nature Publishing Group

雑誌

Nature communications (ISSN:20411723)

巻号頁・発行日

no.6, 2015-04-14

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The three-dimensional topological insulator is a novel state of matter characterized by two-dimensional metallic Dirac states on its surface. To verify the topological nature of the surface states, Bi-based chalcogenides such as Bi2Se3, Bi2Te3, Sb2Te3 and their combined/mixed compounds have been intensively studied. Here, we report the realization of the quantum Hall effect on the surface Dirac states in (Bi1−xSbx)2Te3 films. With electrostatic gate-tuning of the Fermi level in the bulk band gap under magnetic fields, the quantum Hall states with filling factor ±1 are resolved. Furthermore, the appearance of a quantum Hall plateau at filling factor zero reflects a pseudo-spin Hall insulator state when the Fermi level is tuned in between the energy levels of the non-degenerate top and bottom surface Dirac points. The observation of the quantum Hall effect in three-dimensional topological insulator films may pave a way toward topological insulator-based electronics.UTokyo Research掲載「トポロジカル絶縁体の表面ディラック状態の量子化を実証」 URI: http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/observation-of-quantization-in-surface-dirac-states-of-topological-insulator.html

著者

布留 武郎

出版者

国際基督教大学

雑誌

国際基督教大学学報. I-A, 教育研究 (ISSN:04523318)

巻号頁・発行日

vol.20, pp.141-167, 1977-03

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Hypothesis: The bulk of TV program content is entertainment, offering mainly passive pleasure. Although the program content varies the perceptive process in TV viewing has certain common characteristics in its structure. Children are required to perceive immediately the context developed on a TV screen with a global frame of reference but are not required to visually analyze the situations or reflect over them when the responses are uncertain. Therefore as a cumulative effect it can be assumed that TV might function to facilitate children's cognitive tempo and increase their field-dependency, nonananalytic preference or impulsivity. Method: Three kinds of tests were administered to ninetyone boys and ninety-six girls in the fifth grade from the Tokyo suburban area to assess cognitive style and one questionnaire to measure three kinds of TV viewing pattern. The fifth grade children are selected because they are of the age which receives a relatively stable habit of TV exposure (Furu '71), and in addition they still have the possibility of modifying their cognitive style in the future. The three kinds of cognitive tests included a Group Embedded Figure Test (25 items) developed by H.A. Witkin, a Group Conceptual Style Test (24 items) developed by J. Kagan, and a Matching Familiar Figure Test (10 items with 6 variants of each item) developed by J. Kagan, which was further modified for the Japanese children (Furu et al., '75). Reliability coefficient of each test was r_<tt>=0.88 (Kuder-Richardson's formula 20) on EFT. r_<tt>=0.89 (K-R's formula 20) on CST, r_<tt>=0.92 (Cronbach's α) on MFF-response time and r_<tt>=0.40 (Cronbach's α) on MFF-errors respectively. TV viewing time and program content were obtained through a weekly diary designed to complete a time table and identify TV programs watched, which were later classified into three types by a factor analysis (direct varimax method). The first factor was named "entertainment for adults" (e.g., variety shows, detective dramas, etc.); the second factor, "information" (e.g., news, newsshows, etc.) and the third factor, "entertainment for children" (e.g., cartoons, puppets, etc.). Channel preference obtained by a questionnaire was classified into two types, NHK (the public TV station in Japan, having two VHFs) and commercial TV (five VHFs). Ten months later the panel study which measured the same cognitive style and channel preference was carried out in order to investigate the causality of those two variables. Results: Among girls TV-I (entertainment for adults) or TV-III (entertainment for children) showed a statistically significant correlation with EFT respectively (p<.05, p<.05); in other words, the more they watched entertainment TV programs, the more they increased their field dependency. TV-II (information) also correlated with the reflection-impulsivity (close to 5% level of significance) which was categorized by double median split techniques on MFFT. Stated another way, they showed a tendency towards reflective perception in proportion to increment of TV-II (information) exposure. (See 表 5, page 149: 表 means Table). Boys who indicated commercial TV preference were inclined to be field dependent or nonanalyitc type, in contrast to the NHK preference group. Girls with commercial TV preference showed a tendency toward impulsivity in contrast to NHK preference group (see 表 6; 男 means boys, 女 girls. page 149). Although there was no relation betweeen the amount of TV viewing time and any cognitive style, significant correlations among them were found if a certain third variable was held constant. For example, among the lower verbal intelligence boys the more they were exposed to TV as a whole, the more they increased their field dependency, while the higher verbal intelligence group showed the reverse tendency. (see 表 8; 言語性上 means high in verbal scale 1 and下 low; 差 difference, z is tested on the difference between two correlations, page 151). Among girls the higher social maladjustment group tended to be field dependent in proportion to increment of TV exposure time, while higher social adjustment group did not show such a trend (表 9b). Extroverted girls tended to delay their cognitive responses and showed a decrease in errors in MFFT according to the increment of TV exposure time; the converse was true for the introvert group(表 9d, e). Discussion: It was assumed that children's TV viewing pattern would have a certain effect upon their cognitive styles. According to the results of present research, however, it seems more reasonable to interpret that any cognitive style children already possess determines their TV viewing patterns, since there were no TV programs which could help children to make analytic, field independent or reflective perception and which at the same time, aquire enough number of audience to the extent of influencing upon our findings. Secondly it is reasonable to consider some third variables mediating the relationship between cognitive style and channel preference. Among girls we found the intervening variable, the Family Communication Pattern correlated with both of these variables, that is, field independency-depencendency (EFT) and TV entertainment (TV-III or TV-I). See 図1^. (図 means figure, page 155). FCP is a scale which measured a certain parental attitude towards their children on a continuum between the polar of conciliatory or conservative and critical or progressive. The conservative family communication seems to lead their children to watch TV-III and also leads them to field dependency. Path analysis showed .the following results. When TV-III was taken as the criterion measure, the path FCP to TV-III had a significant B weight (.21, p<.05), but the path EFT to TV-III did not show the significence (図 2c; page 156). Next when EFT was taken as the criterion variable, the path FCP to EFT had a significant B weight (-.24, p<.05), but no significance on the path TV-III to EFT (図 2d). This implies that there would not be a causal relationship between EFT and TV-III, and FCP contributes to predict a part of total variance of EFT or TV-III. The coefficients of multiple correlation in this Figure are comparatively low (R=.25 to .32), which implies the existence of some third variable besides FCP, and also the question of FCP Test. It is also reasonable to assume the existence of some third variable intervening between channel preference and cognitive style. As far as the research data were concerned, however, FCP had little correlation with the either variable mentioned above. Therefore we connot refer to any third variable here. At any rate, the notion that cognitive style is an antecedent, and TV viewing pattern its consequence, or vice versa, cannot be concluded here. Another suggestion derived from this research is this correlation between the amount of TV viewing time and some cognitive styles were found when the subjects within a sub-sample were equalized in their attributes by adding one more attribute, that is, verbal ability or some personality aspect to sex difference. Particularly the studies on medium level such manipulation would be desirable. Prominent sex difference was found in our data. But as far as present research is concerned, it is impossible to refer to its cultural and social origin. The results of a panel study which was carried out ten months later showed the following cross-lagged-correlations as denoted in Figure (図3; page 158) (男 means boys, 女 girls, nummeral 5 or 6 indicate the school year, coefficients show zero order correlations.) A path analysis calculated from this cross-lagged-correlations indicated that field independency-dependency at the fifth grade did not contribute to the variance of channel preference at the sixth grade, nor was the converse true. However, in the case of reflection-impulsivity a path analysis showed that channel preference at the fifth grade could prescribe in part the total variance of reflection-impulsivity at the sixth grade. In this case the possible effect of the third variable can be considered but as far as present research data are concerned, such a variable was not found.

著者

(明) 馬蒔 撰

出版者

梅壽古活字印 (重刊)

巻号頁・発行日

vol.[7] 巻之上8 (篇第64-68), 1608

著者

Persides S. Ioannides I. Department of Astronomy University of Thessaloniki Department of Astronomy University of Thessaloniki

出版者

Published for the Research Institute for Fundamental Physics by Physical Society of Japan

雑誌

Progress of theoretical physics = Progress of theoretical physics (ISSN:0033068X)

巻号頁・発行日

vol.58, no.3, pp.829-841, 1977-09-25

被引用文献数

5

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The behavior of asymptotically flat Einstein-Maxwell fields is studied in generalized coordinates u, r, θ and φ that become null-spherical only at infinity. The field equations satisfied by the metric and the electromagnetic tensors are derived in the first and second approximations, i.e., for the first and second non-zero powers of r^<-1> in the Einstein and Maxwell equations. The peeling property of the tetrad components of the Weyl and the electromagnetic tensors is established for arbitrary tetrad. From the Landau-Lifshitz complex the energy and linear momentum radiated per unit time by the gravitational and the electromagnetic fields are expressed in terms of the gravitational and electromagnetic news functions in the generalized coordinates. Finally the transformations which preserve the form of the metric are examined.

著者

Masahiko Imai Hiromasa Yokoe Masayoshi Tsubuki Noriko Takahashi

出版者

The Pharmaceutical Society of Japan

雑誌

Biological and Pharmaceutical Bulletin (ISSN:09186158)

巻号頁・発行日

pp.b18-01002, (Released:2019-04-12)

参考文献数

14

被引用文献数

16

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Cancer is the leading cause of death and there is a particularly pressing need to develop effective treatments for breast and prostate cancer. In the current study, we show the inhibitory effects of cinnamic acid derivatives, including caffeic acid phenethyl ester (CAPE, 1), on the growth of breast and prostate cancer cells. Among the compounds examined, 3,4,5-trihydroxycinnamic acid decyl ester (6) showed the most potent inhibition of cancer cell growth by the induction of apoptosis. Compound 6 could be a new anti-cancer agent for use against breast and prostate cancer.

著者

江原 暉将 金 淵培

出版者

一般社団法人 言語処理学会

雑誌

自然言語処理 (ISSN:13407619)

巻号頁・発行日

vol.3, no.4, pp.67-86, 1996

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主語のない日本語文に対し, 確率モデルを用いて自動的にゼロ主語を補完する手法について述べる. これは, 日英機械翻訳の前処理としての自動短文分割の後で適用されるものである. 確率モデルを用いる方法として, 従来 (1) 多次元正規分布に基づくモデルを利用するものがあった. 本稿では, 新たに3種類のゼロ主語補完のためのモデルを提案する. それらは, 連続分布に対して, (2) 正規分布に基づくGram-Charlier展開を多次元に拡張した分布 (疑似正規分布) に基づくモデル, 離散分布に対しては, (3) 1次対数線形分布, (4) 2次対数線形分布に基づくモデルである. これら4種の確率モデルについて, 補完精度を比較する実験を行った. その結果, (1)~(4) の精度は, 順に, 7 3%, 7 8%, 7 8%, 8 1%であり, 2次対数線形分布を用いる方法が最も精度が高かった. また, 補完を誤った事例について考察を加えた結果, 主語と述語の意味的整合性をより正確に計算する必要があることなどがわかった.

著者

形田 夏実

出版者

地理空間学会

雑誌

地理空間 (ISSN:18829872)

巻号頁・発行日

vol.9, no.2, pp.189-204, 2016

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本研究は,石川県金沢市において伝統野菜として生産される15品目の「加賀野菜」を事例に,それらの生産および流通の動向を分析することで,農産物のブランド化が小規模な都市近郊産地の生産振興にいかなる役割を果たすのかを明らかにした。15品目の生産・流通の動向を分析した結果,15品目は三つに分類できた。一つ目はブランド化が経済的役割を有し,生産農家の基幹的収入となっている品目であった。二つ目はブランド化が経済的役割を有しているものの,農家の基幹的収入となっていない品目である。この品目は生産農家の補完的な収入手段にとどまるが,希少性などを要因として北陸以外の地域にも出荷されていた。三つ目はブランド化の経済的役割が低く,農家の基幹的収入となっていない品目である。生産量の少なさと流通範囲の狭さは,金沢市という地域を単位として認定される加賀野菜の独自性を高めていると考えられる。

著者

Kobayashi Hideo

出版者

近畿大学英語研究会

雑誌

Kinki University English Journal = 近畿大学英語研究会紀要 (ISSN:18827071)

巻号頁・発行日

no.6, pp.89-107, 2010-08-01

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This study explores the usage of the definite article (the) for the noun police when it is used as sentence subject in an American newspaper and in The Bank of English (2003). Longman Essential Activator (2006, p. A64) states that in news reports, journalists often use the word police without the definite article at the beginning of a sentence in the present tense and present continuous tense when describing the ongoing activities of the police. However, I have found that newspaper reporters also quite often use the word police without the definite article at the beginning of a sentence when describing what the police have done in the past. I have collected 352 sample sentences from The Los Angeles Times online. Present tense and present continuous tense sentences account for about 26% of the sample population and past tense sentences account for about 61%. In order to verify these findings from The Los Angeles Times, I also explored The Bank of English (2003). It shows that present tense and present continuous tense sentences account for about 46% of the sample population and past tense sentences account for about 39%. This study confirms what Longman Essential Activator (2006, p. A64) states, but also presents counter evidence to it. (和文) 本研究の目的は、Longman Essential Activator (以下LEAと略す) (2006) における無冠詞+policeの用法を検証することである。一般的に、ニュース報道では警察や警官が現在行っている活動を述べる際には、文の主語に使用される集合名詞 policeは無冠詞で用いられると考えられている (LEA2006)。先行研究では、新聞記事の見出しには書くスペースを確保するために定冠詞がしばしば省略されると考えられているが(藤井1992, 清水2001, 樋口2009)、記事本文において何故主語に使用された集合名詞 policeには定冠詞が付与されないのかが説明されていない。筆者が、無冠詞で文の主語に使用された集合名詞 policeをロサンジェルス・タイムズ紙から調査したところ、352件検索された。確かに、現在形や現在進行形の文章で無冠詞+policeが主語になっている用例は数多く存在し、母集団に占める割合は26%であった (cf.LEA 2006)。しかし、無冠詞+policeが主語になっている用例は過去形の文章でも存在し、母集団の61%を占めていることが看取される。結論として、LEA (2006)における主張にかなう用例は存在するものの、他方で過去形の文章において無冠詞+policeが主語になっている用例も存在するということが本研究の主張点である。

著者

谷 謙二

出版者

埼玉大学教育学部地理学研究室

雑誌

埼玉大学教育学部地理学研究報告 = Occasional paper of Department of Geography, Saitama University (ISSN:09132724)

巻号頁・発行日

vol.22, pp.1-21, 2002

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Although the number of commuting worker to the central Tokyo had increased since the rapid economic growth period (1960s), according to the latest 2000 population census, it decreased in the late 1990s. The purpose of this study is to explain the factors affecting this decrease using commuting data by age in the census. The results of the analysis is summarized as follows...

著者

豊国

出版者

ト山口

雑誌

東錦絵

著者

平井 清子

出版者

学校法人 北里研究所 北里大学一般教育部

雑誌

北里大学一般教育紀要 (ISSN:13450166)

巻号頁・発行日

vol.22, pp.67-101, 2017-03-31 (Released:2017-05-30)

参考文献数

49

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本研究は、台湾の戦後から現在までの英語教育の変遷と特徴、そして、その要因を、比較教育学の観点から、社会・文化的、政治・経済的、歴史的背景から考察する研究の一部である。台湾では、戦後70年間(1945年~2015年)に6つの学習指導要領が発布された。本稿では、このうち、1983年以降に発布された3つの学習指導要領に準拠した高等学校英語教科書の、それぞれ高校3年間分の教科書(全42冊)の各章(全502章)で扱われている題材内容を、日本十進分類法(NDC)に基づいて分類し、その結果を質的特色に考慮して分析・検討することによって、特徴とその要因を実証的に明らかにする。本研究目的は以下のようになる。1) 現代の台湾高校英語教科書で扱われる題材内容の内容構成の特徴を、歴史的観点から明確にする。さらには日本の英語教育に応用できる側面を明らかにする。2) 台湾の高等学校英語教科書の題材内容が、どのような社会・文化的、政治・経済的、そして歴史的背景や要因によって編纂されてきたかを明らかにする。台湾の教科書の題材内容の特徴が、今後、日本の英語教育にどのような示唆を与えるかについては、1983年版の教科書から2008年準拠版に至るまで変わらず、とりわけ1995年以降は、実用英語を重視しつつ「文学」的素養の人間教育を重んじ、これらを両輪としていることが上げられる。比較教育学の観点からは、1980年代からの民主化、自由化の動きが、その後、1987年に戒厳令解除後の1990年代後半からは「本土化」の動きが、教科書の題材内容に反映されていることが実証的に確認された。その他、経済、社会、歴史、イデオロギーの観点からの影響も、台湾の複雑な民族国家の要因や歴史的な経緯と絡み合い、教科書の題材内容の選択に影響を与えていることが明らかとなった。

著者

Koide Daiichi Yanagisawa Hitoshi Tokumaru Haruki Nakamura Shoichi Ohishi Kiyoshi Inomata Koichi Miyazaki Toshimasa

出版者

Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physics

雑誌

Japanese journal of applied physics. Pt. 1, Regular papers & short notes (ISSN:00214922)

巻号頁・発行日

vol.43, no.7, pp.4811-4815, 2004-07-15

参考文献数

8

被引用文献数

1 9

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We describe the effectiveness of feed-forward control using the zero phase error tracking method (ZPET-FF control) of the tracking servo for high-data-transfer-rate optical disk drives, as we are developing an optical disk system to replace the conventional professional videotape recorder for recording high-definition television signals for news gathering or producing broadcast contents. The optical disk system requires a high-data-transfer-rate of more than 200 Mbps and large recording capacity. Therefore, fast and precise track-following control is indispensable. Here, we compare the characteristics of ZPET-FF control with those of conventional feedback control or repetitive control. Experimental results show that ZPET-FF control is more precise than feedback control, and the residual tracking error level is achieved with a tolerance of 10 nm at a linear velocity of 26 m/s in the experimental setup using a blue-violet laser optical head and high-density media. The feasibility of achieving precise ZPET-FF control at 15000 rpm is also presented.

出版者

静岡県特別高等課

巻号頁・発行日

1942

著者

藤原 浩芳 白須 幹啓 奥村 弥 岡島 誠一郎 久保 俊一

出版者

中部日本整形外科災害外科学会

雑誌

中部日本整形外科災害外科学会雑誌 (ISSN:00089443)

巻号頁・発行日

vol.48, no.2, pp.285-286, 2005 (Released:2005-07-30)

参考文献数

7

著者

舟橋聖一 著

出版者

増進堂

巻号頁・発行日

1943