178 research outputs found

    Spin-orbit coupling inactivity of Co2+^{2+} ion in geometrically frustrated magnet GeCo2_2O4_4

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    We report single-crystal neutron diffraction studies on a spinel antiferromagnet GeCo2_2O4_4, which exhibits magnetic order with a trigonal propagation vector and tetragonal lattice expansion (c/a1.001c/a\simeq1.001) below TN=21T_{\rm N}=21 K. For this inconsistency between spin and lattice in symmetry, magnetic Bragg reflections with a tetragonal propagation vector were discovered below TNT_{\rm N}. We discuss spin and orbital states of Co2+^{2+} ion underlying the new magnetic component.Comment: 3 pages 2 figures, submitted to ICFCM proceeding (Journal of Physics: Conference Series, 2011

    〈論文〉台湾におけるナショナル・アイデンティティ : 日本統治下における「台湾」の萌芽

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    中華民国は複雑なアイデンティティの形成を経ながら現在の「台湾」へと収斂していった。その背景には、有史以来の外来政権による支配や、蒋介石率いる国民党軍政期以来の社会的背景などが大きく関与している。台湾は長らくno man\u27s land の状態であった。オランダ統治を契機に、以降様々な外来政権によって統治されることとなった台湾は、帝国日本の統治によって初めて「台湾」を意識することとなった。台湾は長らく複数のエスニック・グループが共存していた。エスニック・グループ同士で一つのネイションとして意識を共有することはなく、また一つのグループが明確に島の支配者として独立することもなく、棲み分けられていた。それは清朝統治時代においても同様であり、あくまでも部分的な統治に留まっていた。「日本」というネイションに統合されることで、台湾に住む人々が共に「日本人」化させられた。しかしながら、明らかな内地人と外地人の差別・差異に、外地人たちは自らを他者化することとなり、「われわれ」を意識することとなった。この「われわれ」は日本人とは異なるナショナル・アイデンティティを有するものであり、「台湾」創出の萌芽であった。本研究では台湾のナショナル・アイデンティティの萌芽を日本統治期に見るものである。方法として日本人作家の川合三良と台湾人作家の呂赫若の文学作品をテクストとして取り上げ、内地人が外地台湾をどのようにまなざしていたか、外地人たちが日本帝国の家族国家観による統治をどのように受容していたかの2 点を文学作品から分析する。さらに日本人という支配者が存在したことで、原住民族と漢族グループの境界に揺らぎが生じたことで、現代に繋がる「台湾」としてのナショナル・アイデンティティの萌芽が日本統治時代に現れていたことを明らかにする。The Republic of China converged to contemporary "Taiwan" through the formation of a complex identity. The facts that foreign governments ruled Taiwan since the dawn of history and that a certain social setting emerged through the KMT (Kuomintang) led by Chiang Kai-shek have greatly been involved in this context. Taiwan was a no man\u27s land for a long period of time. After being ruled by the Netherlands, Taiwan was governed by various foreign administrations and as a result of Japan\u27s governance, Taiwan became conscious of" Taiwan" for the first time. Several ethnic groups were coexisting in Taiwan for a long time. Those ethnic groups did not share the consciousness of being one nation and the groups were divided among themselves without one group being the clear governor of the island. This situation did not change in the Qing Dynasty; thus Taiwan was only governed partially. Getting integrated into Japan, the people living in Taiwan were made Japanese. However, due to the distinction by the Japanese people between people from in- and outside of Japan and discrimination of people from outside of Japan, the Taiwanese became aware of "themselves". These people had a different national identity than Japanese people, which then functioned as a foundation for the creation of Taiwan. This study examines the emergence of Taiwan\u27s national identity under Japanese occupation. For the analysis, literary works by Japanese author Kawai and Taiwanese author Lu Yu Hua were used to see how Japanese people viewed Taiwanese people as well as how the Taiwanese accepted the governance by the Japanese empire. This study reveals that through Taiwan\u27s governance by the Japanese as well as through the fluctuation of boundaries between indigenous Taiwanese and Han Chinese the foundation leading to national identity in present-day Taiwan grew under Japanese occupation

    EVALUATION OF TORQUE MOMENT IN ESTHETIC BRACKETS

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    Objectives: To examine the torque moment that occurs between esthetic brackets and bendable alloy (stainless steel [SS], titanium-molybdenum [Ti-Mo], and titanium-niobium [Ti-Nb]) wires. Materials and Methods: This study examined ceramic (CR), zirconium oxide (ZC), polycarbonate (PC), and conventional metallic brackets (MT) (upper, 0.018-inch and 0.022-inch slots) combined with SS, Ti-Mo, and Ti-Nb wires using elastic module ligation. The torque moments delivered by various wire and bracket combinations were measured using a torque gauge apparatus. The wire torque angles at 5–40° were examined. Results: The torque value increased in the order of CR, ZC, MT, and PC brackets for both 0.018-inch and 0.022-inch slots. The fracture points of the CR and ZC brackets combined with SS and Ti-Mo wires were approximately more than 30° and 35°, respectively. No fracture points were detected in the combination of ZC brackets and Ti-Nb wires. Conclusions: The current study identified the material characteristics of CR, ZR, and PC brackets during torque tooth movements. The present results demonstrate a characteristic combined effect between different esthetic brackets and bendable alloy wires

    Does Pramipexole Treatment Improve Headache in Patients with Concomitant Migraine and Restless Legs Syndrome?

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    Background: Recent studies have suggested a strong link between migraines and restless legs syndrome (RLS). It is possible that these disorders share a dopaminergic dysfunction in the hypothalamic A11 nucleus that contributes to this association. However, there have been no clinical studies to evaluate the effect of dopaminergic treatment on migraine symptoms in patients with concomitant migraines and RLS. Methods: We present an illustrative patient with concomitant RLS and migraine who showed improvement in her headache frequency and RLS symptoms following immediate‐release pramipexole (P‐IR) treatment and provide review results from the medical records of patients who experienced both migraines and RLS in our previous cross‐sectional study. Results: Ten patients (nine patients from the previously completed single‐center study) received P‐IR treatment were included in the study. RLS symptoms improved markedly in all of the subjects. Five out of the 10 patients (50%) reported improvement in migraine headaches. Of these five patients, four (80%) had reported morning headaches before P‐IR treatment. Discussion: Our results indicate that the identification of RLS in migraine patients is clinically significant and that dopaminergic treatment may improve both migraines, particularly morning headache (80% improvement in this study), and RLS symptoms. However, further clinical studies are warranted to verify our results

    Utilizing Video Self-Modeling and Video Hero Modeling to Increase Task Engagement of an Elementary-Aged Student with Autism Spectrum Disorder.

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     本研究では,集中して着替えに取り組むことが難しい一人の知的障害のある自閉症スペクトラム障害児に対して,3種類のビデオモデリング技法を順次適用し,どの技法がもっとも着替え従事率の上昇をもたらすかを検討した。用いられた技法は,①本人が着替えに取り組 むビデオを着替えに先立ち視聴させる技法,②本人が着替えの競争でヒーローに勝つビデオを着替えに先立ち視聴させる技法,③ヒーローが着替えに取り組むビデオを着替えの最中に視聴させる技法の3つであった。ABACADA デザインを用いてこれら3つの介入効果を比 較した結果,③の技法のみに効果が確認された
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