著者
Masayoshi Yamamoto Shinya Shirai Senanayake Thilak Jun Imaoka Ryosuke Ishido Yuta Okawauchi Ken Nakahara
出版者
The Institute of Electronics, Information and Communication Engineers
雑誌
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences (ISSN:09168508)
巻号頁・発行日
pp.2021GCI0001, (Released:2021-11-26)

In response to fast charging systems, Silicon Carbide (SiC) power semiconductor devices are of great interest of the automotive power electronics applications as the next generation of fast charging systems require high voltage batteries. For high voltage battery EVs (Electric Vehicles) over 800V, SiC power semiconductor devices are suitable for 3-phase inverters, battery chargers, and isolated DC-DC converters due to their high voltage rating and high efficiency performance. However, SiC-MOSFETs have two characteristics that interfere with high-speed switching and high efficiency performance operations for SiC MOS-FET applications in automotive power electronics systems. One characteristic is the low voltage rating of the gate-source terminal, and the other is the large internal gate-resistance of SiC MOS-FET. The purpose of this work was to evaluate a proposed hybrid gate drive circuit that could ignore the internal gate-resistance and maintain the gate-source terminal stability of the SiC-MOSFET applications. It has been found that the proposed hybrid gate drive circuit can achieve faster and lower loss switching performance than conventional gate drive circuits by using the current source gate drive characteristics. In addition, the proposed gate drive circuit can use the voltage source gate drive characteristics to protect the gate-source terminals despite the low voltage rating of the SiC MOS-FET gate-source terminals.
著者
羽鳥 徳太郎
出版者
東京大学地震研究所
雑誌
東京大学地震研究所彙報 (ISSN:00408972)
巻号頁・発行日
vol.60, no.1, pp.p87-95, 1985

1984月6年13日,鳥島近海地震(M=5.9)によって,伊豆諸島をはじめ,房総から四国に至る沿岸各地の検潮所で全振幅10~57cm,周期5~9分の津波が観測された.また,八丈島の八重根漁港では,最大波の全振幅130~150cmの津波が目撃された.検潮記録によれば,津波マグニチュードはm=0と格付けされ,地震規模に対して津波が異常に大きい"津波地震"であった.波源域は須美寿島(八丈島南方190km)西側の水深1,000mの伊豆・小笠原海嶺にあり,波源域の長さは25kmと推定される.津波初動の押し引き分布から判断して,波源の西側の海底が隆起し,東側が沈降したとみなされる.

9 0 0 0 OA 官報

著者
大蔵省印刷局 [編]
出版者
日本マイクロ写真
巻号頁・発行日
vol.1950年02月11日, 1950-02-11
著者
岩永 成晃 宮田 昌明 早坂 信哉
出版者
一般社団法人 日本温泉気候物理医学会
雑誌
日本温泉気候物理医学会雑誌 (ISSN:00290343)
巻号頁・発行日
vol.83, no.3, pp.140-150, 2020-10-31 (Released:2021-02-10)
参考文献数
12

平成26年の温泉法の改正によって,温泉入浴の禁忌から妊婦が削除されたが,一般への認知は十分ではない.本邦においては,妊婦の温泉浴の安全性について検証した報告は少なく,日本温泉気候物理医学会として妊婦の温泉浴の安全性について共同研究を行い,その結果を学会から発信するとともに,一般への啓発が必要であると考え,本学会において検討を行った.  妊娠初期から分娩までの期間,温泉地(別府市,指宿市)に居住する妊産婦へ自記式調査票にて以下の調査を行った.1)年齢(妊娠終了時),2)過去の出産回数,3)温泉入浴の状況:妊娠時期(初期・中期・後期)別に日常的な温泉入浴の有無と利用の頻度,内湯温泉や自宅外の温泉施設の利用の有無,4)妊娠中のトラブルの有無:流産(妊娠12週未満の早期流産は除外),早産,切迫早産,妊娠中毒症・妊娠高血圧症(浮腫,高血圧)等について調査した.  回収数は1,721例(回収率86%)であり,平均年齢は30.8歳(17~49歳),初妊婦643例(37.6%),経妊婦1,078例(62.4%)であった.年齢と出産回数は,産科的トラブルとは関連なかった.妊娠の初期と中期において,産科的トラブルは,週1回以上の日常的な温泉入浴者と週1回未満の温泉入浴者の間に有意な差を認めなかった.妊娠後期においては,週1回以上の日常的な温泉入浴者は週1回未満の温泉入浴者に比べ,むしろ産科的トラブルが有意に少なかった(20.3% vs 25.9%,p=0.028).また,里帰り妊婦に絞ってみても,妊娠の初期と中期においては,産科的トラブルの頻度は温泉入浴群と非温泉入浴群の間に有意差を認めなかった.一方,妊娠後期においては,温泉入浴群は非温泉入浴群と比較し,産科的トラブルが有意に少なかった(温泉入浴群13.0% vs 非温泉入浴群24.5%,p=0.028).  日常的に温泉浴をする妊婦において,そうでない妊婦とくらべて,産科的トラブルが増加することはないことが確認できた.温泉の禁忌症から“妊婦”の項目が削除されたことは適正なことであったといえる.
著者
前川 望 横畑 泰志
出版者
日本動物分類学会
雑誌
タクサ:日本動物分類学会誌 (ISSN:13422367)
巻号頁・発行日
vol.18, pp.10-19, 2005-02-20 (Released:2018-03-30)
参考文献数
9

A questionnaire of the use of discriminatory Japanese animal names was conducted among the physically and/or mentally handicapped persons and their supporters. Of 178 respondents, only 35 (19.7%) had already known the problem of discriminatory Japanese animal names, but 44 (24.7%) found this form of discrimination problematic or hateful. Ninety-six (53.9%) of them agreed to renaming of the mekura-nezumi ("blind rat"=mole rat), one of the typical discriminatory Japanese animal names. Renaming of non-typical discriminatory Japanese names, such as ahoudori ("fool bird"=albatross) and namakemono ("idle person"=sloth), drew fewer positive responses. Quantification II was used to detect some relationships between the respondents and their personal traits. Quantification III was adopted to examine some relationships among the questions through the attitudes of the respondents.
著者
Shinichi Watanabe Yasunari Morita Shuichi Suzuki Kaito Kochi Mika Ohno Keibun Liu Yuki Iida
出版者
The Japanese Association of Rehabilitation Medicine
雑誌
Progress in Rehabilitation Medicine (ISSN:24321354)
巻号頁・発行日
vol.6, pp.20210054, 2021 (Released:2021-12-29)
参考文献数
36
被引用文献数
7

Objectives: The aim of this study was to investigate the association between the Rehabilitation Activity Time score (RATs)—a score based on the level and duration of rehabilitation activities—of ventilated patients in the intensive care unit (ICU) and activities of daily living (ADL) dependence at discharge.Methods: This retrospective, single-center study evaluated patients aged >18 years who underwent mechanical ventilation in the ICU for at least 48 h. The patients were categorized into the low- and high-dose rehabilitation groups based on the median RATs. The primary outcome was the rate of ADL dependence at discharge, defined as a Barthel index of <70. The association between low or high doses of rehabilitation and the primary outcome was assessed using multiple logistic regression analysis adjusted by baseline factors.Results: The rate of ADL dependence at discharge was significantly lower in the high-dose rehabilitation group (low dose 81% vs. high dose 22%, P<0.001). Multivariate analysis showed a significantly lower ADL dependence at discharge among those who received high-dose rehabilitation (P<0.001). Increased RATs during the entire ICU admission period and during ICU admission after meeting the criteria for physiological stability was significantly associated with lower ADL dependence at discharge (P<0.001). Moreover, a higher RATs from low-level activity before meeting the criteria for physiological stability also showed a significant association with lower ADL dependence at discharge (P=0.047).Conclusions: ADL dependence was significantly lower among those who underwent high-dose rehabilitation. The RATs was consistently associated with ADL dependence at discharge.
著者
小林 亮太 重松 潤 宮谷 真人 中尾 敬
出版者
日本感情心理学会
雑誌
感情心理学研究 (ISSN:18828817)
巻号頁・発行日
vol.27, no.2, pp.67-72, 2020-03-31 (Released:2020-03-31)
参考文献数
35

Previous studies have reported that cognitive reappraisal is related to decentering and mental health. However, there are two limitations in the current literature. First, it is unclear whether distraction facilitates decentering. Second, anxiety is the only index that has been used to assess mental health. Therefore, we examined whether cognitive reappraisal and distraction enhance decentering, which in turn improves mental health. Three hundred and eighty-seven university students answered questionnaires that assessed cognitive reappraisal, distraction, and decentering. Additionally, we measured depression, subjective happiness, and life satisfaction as mental health indicators. Our results confirmed that cognitive reappraisal and distraction influence mental health. In addition, decentering mediated the effect of cognitive reappraisal and distraction on mental health. These results suggest that distraction and cognitive reappraisal enhance decentering, which in turn, improves mental health.
著者
永瀬 開
出版者
人間環境学研究会
雑誌
人間環境学研究 (ISSN:13485253)
巻号頁・発行日
vol.15, no.1, pp.35-44, 2017 (Released:2017-06-30)
被引用文献数
2

Previous studies have noted the in emotion regulation difficulties of individuals with autism spectrum disorder (ASD). The present review aimed to explore trends in the process of emotion regulation among individuals with ASD. According to previous studies, emotion regulation involves strategies of reappraisal and suppression. The findings were that (a) individuals with ASD experience difficulty in using reappraisal strategies, (b) individuals with ASD exhibit the maladaptive behaviors, so they experience difficulty in using the emotion regulation strategies, (c) individuals with ASD exhibit psychiatric symptoms, so that they experience difficulty in using reappraisal strategies, and (d) emotion regulation intervention for in individuals with ASD involves cognitive behavioral therapy. These findings suggested that further studies are needed to investigate the effectiveness of the psychodramatic method in using reappraisal strategies for individuals with ASD.
著者
熊谷 学而 川原 繁人
出版者
日本言語学会
雑誌
言語研究 (ISSN:00243914)
巻号頁・発行日
vol.155, pp.65-99, 2019

<p>本研究では,ポケモンの名付けにおける新たな音象徴的イメージを検証した2つの実験を報告する。実験1では,進化後のポケモンの名前として,開口度の大きい母音[a]が,開口度の小さい母音[i, u]よりもふさわしいことが明らかになった。また,有声阻害音の数の効果を検証した結果,進化後のポケモンの名前として,有声阻害音が2つ含まれる名前は,それが1つしか含まれていない名前よりふさわしいこともわかった。実験2では,母音と有声阻害音の優先性や相乗効果の検証も行った。その結果,ブーバ・キキ効果と同様に,母音の効果より,子音の効果のほうが強く現れること,そして,母音と有声阻害音の組み合わせは,どちらか一方を含む場合よりも,進化後のポケモンの名前として判断されやすいことが明らかになった。さらに,本研究では,実験2で得られた母音と有声阻害音の音象徴的効果について,制約理論である最大エントロピーモデル(Maximum Entropy (MaxEnt) Grammar)の枠組みでの分析も提供し,音象徴を生成言語理論の視点から捉える。</p>
著者
Chiaki Yanagihara Teru Kumagi Tatsuro Tasaka Yuta Watanabe Tamami Kono Kiyotaka Ohshima Akiyoshi Ogimoto
出版者
The Japanese Society of Internal Medicine
雑誌
Internal Medicine (ISSN:09182918)
巻号頁・発行日
pp.8479-21, (Released:2021-11-06)
参考文献数
15

We herein report two cases of potentially life-threatening arrhythmia due to hyperkalemia triggered by the excessive consumption of "Hoshi-Imo" (dried sweet potato). Both patients with chronic renal disease on renin-angiotensin-aldosterone system inhibitors presented at the emergency room with non-specific symptoms. Electrocardiograms revealed potentially life-threatening arrhythmia due to hyperkalemia in both cases: sinus arrest with a ventricular escape rhythm, tall and peaked T waves; and a widened QRS complex in a nearly sine-wave configuration without discernible P wave. Both patients fully recovered after intensive care for hyperkalemia. Physicians should recognize the excessive consumption of "Hoshi-Imo" may lead to the development of life-threatening arrhythmia, especially in patients with risk factors for hyperkalemia.
出版者
改造社
巻号頁・発行日
vol.第20篇 (佐藤春夫・芥川竜之介集), 1929