著者
窪田 智徳 小川 浩平 石黒 浩
出版者
人工知能学会
雑誌
人工知能学会全国大会論文集 (ISSN:13479881)
巻号頁・発行日
vol.31, 2017

本研究では、株式会社ドワンゴが提供するニコニコ生放送サービス上で、人と雑談対話エンジンが協調してアンドロイドを操作し、雑談対話コーパスを収集しながら雑談対話エンジンの漸進的な自律性の獲得を目指すシステムを提案する。ニコニコ生放送では配信された映像を不特定多数のユーザが視聴するため、効率的な対話コーパス収集が可能である。本稿では上記手法を実装・運用し、雑談対話エンジンの一定の自律性の獲得を確認した。
著者
野村 健一 須藤 昇吾 清水 武秀 田代 祐二
出版者
日本応用動物昆虫学会
雑誌
日本応用動物昆虫学会誌 (ISSN:00214914)
巻号頁・発行日
vol.8, no.1, pp.69-75, 1964-03-25

メチルジメトン剤には, メタシストックス(P=O体・P=S体あわせて50%)と改良メタシストックス(P=O体のみ25%)とがあるが, 最近は後者のほうが多く用いられ, 果樹への塗布薬剤もこれが主体となっている。われわれはこの改良メタシストックスの塗布処理について, 効果(薬量)および薬害の両観点から考察した。1.成木では, 主幹より主枝または亜主枝に塗布するほうが経済的であり, その薬量は, (a)枝に投与されるべき絶対量, (b)樹皮単位面積あたりの塗布量(塗布液の厚さ), の2点から論議されるべきである。(a)は防除効果に, (b)は薬害に関係があるが(後者についてはあとで述べる), この中(a)は枝の大きさに応じて加減すべきはいうまでもない。従来, その薬量算出基準には, 枝周・葉数・枝体積などがとられてきたが, 枝周基準の方法は枝の大きさによって効果にむらがある(Fig.2)。われわれは原理的には枝体積によるのが妥当であるとし, その適正薬量を次のように想定した。すなわち, アブラムシ類防除には枝体積1500〜3000cm^3あたり原液1cc, ハダニ類には1500〜2000cm^3あたり1ccが適量であるとした(春〜初夏の場合を標準として)。2.上述した各種の薬量算出法で求められた薬量対枝周の関係を比較考察した(Fig.3)。上に提唱した薬量は, アブラムシ類の場合は, V_1〜V_2の範囲で示される。ハダニ類のそれは, V_1からほぼP_2の範囲がこれに相当する。3.実際問題としては, 枝体積を測定して塗布量を算定するのはめんどうであるから, 次のような方法を提案したい(簡易塗布法)。それは原液の引伸し塗布(樹皮100cm^2に対し原液0.6cc〜0.8cc程度の)を行ない, かつ塗布範囲(塗布面積)は枝直径の3〜4倍長とするものである。これによって与えられる薬量は, Fig.3のP_<1〜3>の範囲と期待される。それは, 上述した適正薬量にほぼ符合する。4.次に(b)(樹皮単位面積あたりの薬量)は, 薬害と関連があり, 特にミカンでは注意すべき事項であるが, これと塗布時気温との組合わせから, 薬害(ミカン)の発生有無がおよそ見当つけられることがわかった。Fig.4のSの範囲では, ミカンでも薬害発生の懸念はほとんどないと考えられる。
著者
池田温
雑誌
東洋学報 / The Toyo Gakuho
巻号頁・発行日
vol.42, no.3, pp.293-331, 1960-06

In recent years, some works of Prof. N. Niida (仁井田陞) and Prof. W. Eberhard have added considerably to the study of the caste system (身分制度) of old China. Their studies of intra-caste marriage (Ebenbürtigkite) in hundreds noble families between the period of the Six Dynasties and the beginning of the T'ang Dynasty especially valuable in the study of the caste system of China, notwithstanding the former regards it as ancient aristocracy, the latter regards it as medieval gentry. The basic data for research on this question is the lists of county nobles found at Tun-huang. However, the qualification of this document as data has been in doubt, with Hsiang Ta (向達) and K. Utsunomiya (字都宮清吉) etc. taking the viewpoint that it is the Chên-kuan-Shih-tsu-chih compiled at the order of the Emperor T'ai-tsung and with Mou Jun-sun (牟潤孫) taking the viewpoint that it was forged by poverty-stricken member of famous nobles with the intention of raising the marriage price.After an inclusive study of materials concerning to this subject the author reached the following conclusions: 1) The following items discovered at Tun-huang are tables of county nobles which may be called Chün-wang-piao 郡望表 (lists of county nobles) and have no connection with the Chên-kuan-Shih-tsu-chih (貞観氏族志). A) 位字79號 (incomplete roll copied by a bhiksu Wu-chên in 836 A. D.). B) S.5861 (4 fragments) & P.3191 (incomplete). C) S. 2052. D) P.3421 (incomplete). 2) The records of distinguished family-names in many counties contained in the T'ai-p'ing-huan-yü-chi (太平寰宇記), Kuang-yün (廣韻) and Ku-chin-hsing-shih-shu-pien-chêng (古今姓氏書辯證), are also reckoned to have their sources in the lists of same category. 3) On careful comparison with the descriptions of several Sung (宋) bibliographies, we may identify A with the Chou-shih-tsu-p'u (諸氏族譜), and B and the list in T'ai-p'ing-huan-yü-chi with the T'ien-hsia-chün-wang-shih-tsu-p'u (天下郡望氏族譜). 4) These lists of county nobles have neither official nor authentic character, but are the products of popularity, and differentiating into some variations they spread over to wide people. 5) The intra-caste marriage system found in these lists has some reflection of the real circumstances in the former period, but on the other hand we can not deny it include the element of fiction. 6) The origin of these lists perhaps had any connection with the Clan-adjustment policy of Emperor Hsiao-wen of Northern Wei dynasty, and afterwards their diffusion has been continued in the decline period of nobilities.
著者
野津 湧太 前原 裕之 行方 宏介 野津 翔太 幾田 佳 本田 敏志 野上 大作 柴田 一成
出版者
日本地球惑星科学連合
雑誌
JpGU-AGU Joint Meeting 2017
巻号頁・発行日
2017-03-10

Flares on G, K, M-type stars are sudden releases of the magnetic energy stored around the starspots, like solar flares. Recent high-precision photometry from space shows that "superflares", which are 10-104 times more energetic than the largest solar flares, occur on many G, K, M-type stars including Sun-like stars (slowly-rotating G-type main-sequence stars like the Sun) (e.g., Maehara et al. 2012 Nature). Such superflares emit harmful UV/X-ray radiation and high-energy particles such as protons, and may suggest that exoplanet host stars have severe effects on the physical and chemical evolution of exoplanetary atmospheres (cf. Segura et al. 2010 Astrobiology, Takahashi et al. 2016 ApJL). It is then important to know the detailed properties of such superflare events for considering the habitability of planets.In this presentation, we present statistical properties of superflares on G, K, M-type stars on the basis of our analyses of Kepler photometric data (cf. Maehara et al. 2012 Nature, Shibayama et al. 2013 ApJS, Notsu et al. 2013 ApJ, Maehara et al. 2015 EPS). We found more than 5000 superflares on 800 G, K, M-type main-sequence stars, and the occurrence frequency (dN/dE) of superflares as a function of flare energy (E) shows the power-law distribution with the power-law index of -1.8~-1.9. This power-law distribution is consistent with that of solar flares.Flare frequency increases as stellar temperature decreases. As for M-type stars, energy of the largest flares is smaller (~1035 erg) compared with G,K-type stars, but more frequent "hazardous" flares for the habitable planets since the habitable zone around M-type stars is much smaller compared with G, K-types stars.Flare frequency has a correlation with rotation period, and this suggests young rapidly-rotating stars (like "young Sun") have more severe impacts of flares on the planetary atmosphere (cf. Airapetian et al. 2016 Nature Geoscience). Maximum energy of flares and flare frequency also depends on the area of starspots, and this suggest existence of large starspots is important factor of superflares.The statistical properties of superflares discussed here can be one of the basic information for considering the impacts of flares on planet-host stars.
著者
Takuya Evan KISHIMOTO Shoko YASHIMA Rei NAKAHIRA Eri ONOZAWA Daigo AZAKAMI Makoto UJIKE Kazuhiko OCHIAI Toshiyuki ISHIWATA Kimimasa TAKAHASHI Masaki MICHISHITA
出版者
公益社団法人 日本獣医学会
雑誌
Journal of Veterinary Medical Science (ISSN:09167250)
巻号頁・発行日
pp.16-0412, (Released:2017-05-21)
被引用文献数
7

Cancer stem cells or tumor-initiating cells (TICs) are a small subpopulation of cells that have the capacity to self-renew, differentiate and initiate tumors. These cells may function in tumor initiation, aggression and recurrence. Whether spheres derived from canine rhabdomyosarcoma cells have stem cell-like properties is unclear. We induced sphere formation in the canine rhabdomyosarcoma cell lines, CMS-C and CMS-J, and characterized the spheres in vitro and in vivo. Sphere-forming cells were more resistant to vincristine, mitoxantrone and doxorubicin than adherent cells. Xenograft transplantation demonstrated that 1 × 103 sphere-forming cells derived from CMS-C were sufficient for tumor formation. The sphere assay showed that the sphere-forming cells were present in these tumors. These results suggest that the spheres derived from canine rhabdomyosarcoma cells may possess characteristics of TICs. This study provides the foundation for elucidating the contribution of TICs to rhabdomyosarcoma tumorigenesis.
著者
石橋 勇人 山井 成良 安倍 広多 大西 克実 松浦 敏雄
出版者
一般社団法人情報処理学会
雑誌
情報処理学会論文誌 (ISSN:18827764)
巻号頁・発行日
vol.40, no.12, pp.4353-4361, 1999-12-15
被引用文献数
10 7

計算機の小型軽量化にともなって,モバイルコンピューティングが急速に普及してきている.大学などの教育機関においては,これらの計算機に対してネットワークサービスを提供するために,図書館などのパブリックスペースに情報コンセントを設置するところが増えている.しかしながら,このような環境下では,利用者の計算機の設定を限定することは事実上不可能であるため,ネットワークの不正利用を防止することが困難であった.本論文では,事前に登録された正規利用者のみが情報コンセントを利用することができ,かつ,IPアドレスやMACアドレスを偽造することによる不正なネットワークアクセスを防止する方法を提案する.本方式では,利用者が登録されていればIPアドレスやMACアドレスの事前登録は不要である.本論文で提案した方式を実装し実験を行った結果,利用者認証なしにネットワークにアクセスすることやMACアドレスやIPアドレスを偽って不正にネットワークにアクセスすることは不可能であり,安全な情報コンセントの構築に役立つことが確認された.Personal computers are getting much smaller and easier to carry about in these days.LAN sockets providing network accessibilityfor those mobile computers are often set in public places like libraries, computer centers, and so on.However, it is difficult to prevent illegal access to networks in such cases.In this paper, we propose a protection method to cope with illegalaccess.Our method provides the following functions: (1) only validusers can access to the network, (2) preventing malicious users frominvalid use of the network by IP and/or MAC address spoofing, and(3) no need for pre-registration of IP and/or MAC addresses.We have implemeted this method as a system named LANA.The design and implementation of LANA are also discussed.
著者
後藤 崇志 楠見 孝
出版者
日本社会心理学会
雑誌
社会心理学研究 (ISSN:09161503)
巻号頁・発行日
vol.28, no.3, pp.125-136, 2013-03-31 (Released:2017-03-03)

The purpose of this research was to investigate whether a decrement in self-control resources caused burnout among employees with different degrees of autonomy. We conducted a panel survey among 424 employees. The results revealed that 1) autonomy affected the relationship between controlling emotional sensations and burnout. Controlling emotional sensations increased burnout among employees with low autonomy, but not among those with high autonomy. Moreover, the results revealed that 2) autonomy did not affect the relationship between other self-control behaviors and burnout. We discussed why a decrement in self-control resources caused burnout and how autonomy affected it, by referring to the process of self-control based on the Limited Resource Model, cognitive control, and physiological underpinnings.

2 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.1891年09月03日, 1891-09-03
著者
渡辺 勇士 井上 愉可里 原田 康徳
雑誌
情報処理
巻号頁・発行日
vol.58, no.6, pp.468-473, 2017-05-15

ビスケットはコンピュータの専門家ではない人でもプログラミングを楽しく理解できるツールである.2016年にアプリ版がリリースされ,タブレットで使えることによって,指で操作できるため,ペンを使うことに慣れていない児童でも,ストレスを感じずにプログラムをつくることができる.ビスケットは開発されてから,言語の進化と同時にビスケットの教え方も進化してきた.根底にある原理は「子供たちの驚きと喜びを最大化する」ように情報を提示することである.本稿では,実際の子供たちへの教え方になぞって,我々がどのように子供たちに教えているのか解説する.
著者
清水 康敬
出版者
日本教育工学会
雑誌
日本教育工学雑誌 (ISSN:03855236)
巻号頁・発行日
vol.21, pp.1-4, 1997-08-20
被引用文献数
3

論文の文章表現について調べ, 新聞記事における文章表現と比較した.そして, 1文あたりの文字数と最大文字数, 文節数, 文節あたりの文字数などを示した.また, 論文と新聞記事の文字数を比較した結果, 1%水準で学会誌の論文が有意に長文であることを示した.文字数と文節数との相関係数を求め, 文章の特徴を調べた.さらに, 長文となる理由について考察した.
著者
谷 健一郎 Ishizuka Osamu McIntosh Iona Nichols Alexander Masaki Yuka Ikegami Fumihiko Sumino Hirochika Toyofuku Takashi
出版者
日本地球惑星科学連合
雑誌
JpGU-AGU Joint Meeting 2017
巻号頁・発行日
2017-03-10

Oomurodashi is a large bathymetric high located at the northern end of the Izu-Bonin Arc. Using the 200 m bathymetric contour to define its summit dimensions, the diameter of Oomurodashi is ~20 km, making it one of the biggest edifices among the Izu-Bonin Arc volcanoes. Oomurodashi has been regarded as inactive, largely because it has a vast flat-topped summit at ~100 meters below sea level (mbsl).During cruise NT07-15 of R/V Natsushima in 2007, we conducted a dive survey in a small crater, Oomuro Hole, located in the center of the flat-topped summit, using a remotely-operated vehicle (ROV). The heat flow measurement conducted on the floor of Oomuro Hole during this dive recorded an anomalously high value of 4,200 mW/m2. Furthermore, ROV observations revealed that the southwestern wall of Oomuro Hole consists of fresh rhyolitic lavas.These findings suggest that Oomurodashi is an active silicic submarine volcano. To confirm this hypothesis, we conducted detailed ROV and geophysical surveys of Oomurodashi in 2012 and 2016 (cruises NT12-19 of R/V Natsushima and KS-16-6 of R/V Shinseimaru). The ROV surveys revealed numerous active hydrothermal vents on the floor of Oomuro Hole, at ~200 mbsl, with maximum water temperature measured at the hydrothermal vents reaching 202°C. We also conducted a much more detailed set of heat flow measurements across the floor of Oomuro Hole, detecting very high heat flows of up to 29,000 mW/m2. ROV observations revealed that the area surrounding Oomuro Hole on the flat-topped summit of Oomurodashi is covered by extensive fresh rhyolitic lava and pumice clasts with minimal biogenetic or manganese cover, suggesting recent explosive eruption(s) from the Hole. Furthermore, several small (~50 m in diameter) domes were discovered on the flat-topped summit of Oomurodashi, and an ROV survey recovered fresh rhyolite lava from one of these domes, suggesting that more effusive, lava dome-building eruptions also occurred recently. These findings strongly indicate that Oomurodashi is an active silicic submarine volcano, with recent eruption(s) occurring from Oomuro Hole. Since the summit of Oomurodashi is in shallow water, it is possible that eruption columns are likely to breach the sea surface and generate subaerial plumes. A ~10 ka pumiceous tephra layer with identical geochemical characteristics to the rhyolites recovered during the dives has been discovered in the subaerial outcrops of the neighboring islands of Izu-Oshima and Toshima, strongly suggesting that these tephra deposits originated from Oomuro Hole.The deeper slopes of Oomurodashi are composed of effusive and intrusive rocks that are bimodal in composition, with basaltic dikes and lavas on the northern flank and dacite volcaniclastics on the eastern flank. This suggests that Oomurodashi is a complex of smaller edifices of various magma types, similar to what has been observed at silicic submarine calderas in the southern part of the Izu-Bonin Arc (e.g. Sumisu Caldera; Tani et al., 2008, Bull. Vol.).We will provide a geological overview of Oomurodashi Volcano and edifice growth history based on the ROV observations, and discuss its potential hazards from shallow submarine silicic eruptions.
著者
Ajay B. Limaye Jean-Louis Grimaud Yuhei Komatsu Chris Paola
出版者
日本地球惑星科学連合
雑誌
JpGU-AGU Joint Meeting 2017
巻号頁・発行日
2017-03-10

Submarine channels convey turbidity currents, whose deposits are key hydrocarbon reservoirs and indirect records of continental denudation. Submarine channel patterns resemble those of their subaerial counterparts, but controls on the form and dynamics of submarine channels and associated deposits remain comparatively uncertain. Existing laboratory experiments show that braided channels can develop under similarly high flow width-to-depth ratios for both subaerial and submarine conditions. We conducted a new set of experiments with net-depositional density currents to (1) further test the conditions for channel formation; (2) test the response of channel and bar geometry to changes in the ratio of water-to-sediment flux, inlet conditions, and submarine versus subaerial conditions; and (3) quantify the relative timescales of channel lateral migration, abandonment, and aggradation. We generated density currents within a freshwater basin using saline inflows that transported plastic sediment as bedload across a platform 2 m long and 1 m wide. We find that across a 2.7-fold range in the ratio of water-to-sediment flux, submarine braided channels consistently develop, are more pronounced upstream, and can transition to zones of sheet flow downstream. We measured topographic statistics directly, and using a reduced-complexity flow model. The topographic analysis showed that braiding index is higher for subaerial than for submarine conditions with other variables fixed. For a representative submarine experiment, channel lateral motion decorrelated in double the time to move laterally one channel width, and one-third the time to aggrade one channel depth. We propose a new stratigraphic model for submarine braided channels, wherein sand bodies are more laterally connected and less vertically persistent compared to those formed by submarine meandering channels. These results suggest that channel pattern is a key variable for predicting stratigraphic architecture in submarine environments.