著者
松田 健
出版者
日本医科大学医学会
雑誌
Journal of Nippon Medical School (ISSN:13454676)
巻号頁・発行日
vol.69, no.5, pp.508, 2002 (Released:2002-10-25)
参考文献数
2
著者
下澤 楯夫
出版者
日本比較生理生化学会
雑誌
比較生理生化学 (ISSN:09163786)
巻号頁・発行日
vol.23, no.1, pp.32-36, 2006-01-30 (Released:2007-10-05)
参考文献数
3

Part 4. Rate of information transmission through a noisy channel and other related concepts are formulated as an extension of Shannonian information theory introduced in Part 3. Ergodicity of stochastic process and Gaussian probability distribution are also explained. Auto- and Cross-correlation functions and convolution integral are introduced with their Fourier transforms for elimination of effect of noise in system identification.
著者
竹下 健二 尾形 剛志
出版者
日本イオン交換学会
雑誌
日本イオン交換学会誌 (ISSN:0915860X)
巻号頁・発行日
vol.23, no.1, pp.1-5, 2012 (Released:2012-02-02)
参考文献数
6
被引用文献数
7 5

原子炉施設内には放射性物質を含む汚染水や汚染海水が大量に蓄積され,その中の Cs 回収にはフェロシアン化鉄(吸着剤)と無機凝集剤を用いた凝集沈殿法とフェロシアン化鉄のシリカ造粒体を用いた吸着法が適用できる。凝集沈殿法では真水・海水のいずれの条件であっても汚染水中の Cs をほぼ完全に(DF~104)回収できた。吸着法では,ゼオライトでは適用が難しい,極微量 Cs(10 ppb 以下)を含む海水から効率的に Cs を回収できた。更に,環境汚染物質の除染技術への応用として下水汚泥からの Cs 回収について検討した。福島市の実下水汚泥(105 Bq/kg)に対して亜臨界水による水熱分解と凝集沈殿を組み合わせた複合プロセスを適用することで,下水汚泥から 96% の Cs を沈殿回収することに成功した。
著者
山本 聡彦 小松 孝紀 生天目 章
出版者
日本ソフトウェア科学会
雑誌
コンピュータ ソフトウェア (ISSN:02896540)
巻号頁・発行日
vol.28, no.1, pp.1_26-1_33, 2011-01-25 (Released:2011-03-25)

近年,様々な分野において,複雑ネットワークに関する研究が進められてきた.そのような中,与えられた目的に適合する特性を持った最適なネットワークとは何か,またそれをどのように設計するかという問題は,未だ解明されていないことが多い.従来の研究は,あるルールの下でネットワークを作成し,そのネットワークの特性を調べていくものが多い.本研究では遺伝的アルゴリズムを用いて最適なネットワーク(厳密には準最適なネットワーク)を生成させる方法を提案する.最適なネットワークを生成するための評価指標としてネットワークを表現する隣接行列の最大固有値とリンク密度の2つの線形結合関数を定義し,遺伝的アルゴリズムによりネットワークを進化させる.また,進化的に生成した準最適なネットワークの構造について解析をする.
著者
原田 隆史 江藤 正己 高柳 知世
出版者
情報知識学会
雑誌
情報知識学会誌 (ISSN:09171436)
巻号頁・発行日
vol.18, no.2, pp.153-160, 2008-05-23 (Released:2008-09-08)
参考文献数
9
被引用文献数
2 2

近年,感性に基づいて小説を検索できるシステムが開発され実用化されてきている。著者らも児童書を対象としてオンライン書評から感性を示すパラメータに値を設定し,検索できるシステムを構築してきた。しかし,人間が付与するパラメータの値と書評中の語との関係の分析は十分に行われておらず,書評中の語を元として感性パラメータの値をどのように設定することが適切であるかは明らかとなっていない。本研究は,書評中の「人の感情や本の雰囲気を表す語」を元に機械学習の手法を用いて人間の判断と一致する感性パラメータの値を付与する実験を行ったものである。図書1605 冊分の書評を使って自動設定実験を行った結果,(1) 自動設定において書評中の語を使うことに有用性がある,(2) 書評中のすべての語を用いるよりも,出現回数が多い30語程度を用いた方が効果的である,(3)書評中から抽出する語の品詞はほとんど再現率に影響しないことなどを明らかにすることができた。
著者
Keun-Chang Kwak
出版者
The Institute of Electronics, Information and Communication Engineers
雑誌
IEICE Electronics Express (ISSN:13492543)
巻号頁・発行日
vol.6, no.4, pp.187-192, 2009 (Released:2009-02-25)
参考文献数
6
被引用文献数
1

This paper is concerned with real-time incremental face recognition for home service robots. For this purpose, we use an Incremental Tensor Subspace Analysis (ITSA) to enroll and recognize the user's face through low-price robot camera when robot performs the real-time customized service in home environments. Furthermore, we perform face recognition based on face database constructed in u-robot test bed environments in ETRI (Electronics and Telecommunications Research Institute). Thus it can be used as a core technique in conjunction with Human-Robot Interaction (HRI) that can naturally interact between human and robots in home robot applications. The experimental results on face database reveal that the presented method shows a good performance in comparison with the well-known methods in distant-varying environments.
著者
Soichiro IKUNO Norihisa FUJITA Yuki KAWAGUCHI Taku ITOH Susumu NAKATA Kota WATANABE Hiroyuki NAKAMURA
出版者
The Japan Society of Plasma Science and Nuclear Fusion Research
雑誌
Plasma and Fusion Research (ISSN:18806821)
巻号頁・発行日
vol.6, pp.2401069, 2011-07-01 (Released:2012-01-23)
参考文献数
9
被引用文献数
1 1

The variable preconditioned (VP) Krylov subspace method on multi Graphics Processing Unit (GPU) is numerically investigated. Besides, the linear system obtained by finite element method with an edge element is adopted for the problem. The results of computations show that VP conjugate gradient method on multi GPU demonstrated significant achievement than that of CPU. Especially, VP conjugate gradient method on multi GPU is 4.35 times faster than that of CPU. However, transmission rate between the PC using Gigabit Ethernet is the bottleneck of the performance.
著者
Yuichi Katayose Hiroyuki Kanamori Michihiko Shimomura Hajime Ohyanagi Hiroshi Ikawa Hiroshi Minami Michie Shibata Tomoko Ito Kanako Kurita Kazue Ito Yasutaka Tsubokura Akito Kaga Jianzhong Wu Takashi Matsumoto Kyuya Harada Takuji Sasaki
出版者
Japanese Society of Breeding
雑誌
Breeding Science (ISSN:13447610)
巻号頁・発行日
vol.61, no.5, pp.661-664, 2012 (Released:2012-02-04)
参考文献数
10
被引用文献数
11 13 3

Soybean [Glycine max (L) Merrill] is one of the most important leguminous crops and ranks fourth after to rice, wheat and maize in terms of world crop production. Soybean contains abundant protein and oil, which makes it a major source of nutritious food, livestock feed and industrial products. In Japan, soybean is also an important source of traditional staples such as tofu, natto, miso and soy sauce. The soybean genome was determined in 2010. With its enormous size, physical mapping and genome sequencing are the most effective approaches towards understanding the structure and function of the soybean genome. We constructed bacterial artificial chromosome (BAC) libraries from the Japanese soybean cultivar, Enrei. The end-sequences of approximately 100,000 BAC clones were analyzed and used for construction of a BAC-based physical map of the genome. BLAST analysis between Enrei BAC-end sequences and the Williams82 genome was carried out to increase the saturation of the map. This physical map will be used to characterize the genome structure of Japanese soybean cultivars, to develop methods for the isolation of agronomically important genes and to facilitate comparative soybean genome research. The current status of physical mapping of the soybean genome and construction of database are presented.
著者
Toshitaka GAMO Kei OKAMURA Kyohiko MITSUZAWA Kenichi ASAKAWA
出版者
The Japan Academy
雑誌
Proceedings of the Japan Academy, Series B (ISSN:03862208)
巻号頁・発行日
vol.83, no.7, pp.199-204, 2007-07-30 (Released:2007-11-02)
参考文献数
29
被引用文献数
5 9

We successfully deployed an in situ automatic chemical analyzer sensitive to manganese (Mn) in seawater for a period of 81 days for the first time on the deep seafloor of Sagami Bay along a convergent plate boundary south of Japan. The in situ Mn analyzer (GAMOS-IV) was connected to a submarine cable as a means to supply power and to relay real time data. During the observation period from April 5 till June 25, 2006, the amount of measured Mn was seen to increase abruptly up to 10 times that of the background level only on April 21, probably triggered by a M5.8 earthquake which occurred ∼7 km south-southwest of the observation site. This study demonstrates the suitability of submarine cables for the long-term geochemical monitoring of deep sea environments.(Communicated by Taroh MATSUNO, M.J.A.)
著者
TSUNEHIKO HANIHARA HIROFUMI MATSUMURA YOSHINORI KAWAKUBO LAN COUNG NGUYEN KIM THUY NGUYEN MARC F. OXENHAM YUKIO DODO
出版者
The Anthropological Society of Nippon
雑誌
Anthropological Science (ISSN:09187960)
巻号頁・発行日
pp.1202070129, (Released:2012-02-09)
被引用文献数
7 12

In this study, nine nonmetric cranial traits were recorded for ancient human remains excavated at early prehistoric (the late Pleistocene, early Holocene, and Pre-Pottery Neolithic) and late prehistoric (the Neolithic and early Iron age) archeological sites in northern Vietnam. The comparative samples consist of prehistoric and early historic crania from the lower Yangtze River basin, together with recent cranial series from Vietnam, Thailand, South China, and Australia. The results, based mainly on the measure of divergence, are as follows: (1) the early prehistoric northern Vietnam group is distinct from the subsequent inhabitants of northern Vietnam and neighboring populations; (2) the cranial series of northern Vietnam and the surrounding region from the late prehistoric to recent times through early historic period exhibit relative homogeneity, suggesting population continuity; (3) the recent Han Chinese from southern China, one of the possible representatives of East Asians, are relatively distant from all groups from the prehistoric age onwards; and (4) a clear separation of Aboriginal Australians from all the comparative samples, including the early prehistoric northern Vietnamese, is evident. These findings suggest partial support for the two opposing hypotheses, i.e. the two-layer model and the regional-continuity model, for the population history of Southeast Asians, at least, in the northern Vietnamese region. This may be further compatible with the recent hypothesis for modern human dispersals: an earlier out-of-Africa expansion of Australians than other contemporary Eurasians including Southeast Asians.
著者
Kazuki Ogata Daisuke Sasano Tomoya Yokoi Katsuhiro Isozaki Hirofumi Seike Nobuhiro Yasuda Tetsuya Ogawa Hiroki Kurata Hikaru Takaya Masaharu Nakamura
出版者
(社)日本化学会
雑誌
Chemistry Letters (ISSN:03667022)
巻号頁・発行日
vol.41, no.2, pp.194-196, 2012-02-05 (Released:2012-02-04)
参考文献数
42
被引用文献数
15

Novel NCN-pincer Pd-complex-bound norvaline derivatives were synthesized. The N- and C-termini-alkylated Pd–norvalines spontaneously assemble into fibrous aggregates to form supramolecular gels, in which the NCN-pincer Pd complex moieties assemble in a highly oriented manner.