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Institution

University of Electro-Communications

EducationTokyo, Japan
About: University of Electro-Communications is a education organization based out in Tokyo, Japan. It is known for research contribution in the topics: Laser & Robot. The organization has 8041 authors who have published 16950 publications receiving 235832 citations. The organization is also known as: UEC & Denki-Tsūshin Daigaku.


Papers
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Journal ArticleDOI
Seiji Kawamura1, Masaki Ando2, Takashi Nakamura3, K. Tsubono2, Takahiro Tanaka3, I. Funaki, Naoki Seto1, Kenji Numata4, Shuichi Sato1, Kunihito Ioka, Nobuyuki Kanda5, T. Takashima, Kazuhiro Agatsuma2, Tomotada Akutsu2, Koh-suke Aoyanagi6, Koji Arai1, Y. Arase2, Akito Araya2, Hideki Asada7, Yoichi Aso8, Takeshi Chiba9, Toshikazu Ebisuzaki, Motohiro Enoki10, Yoshiharu Eriguchi2, Masa-Katsu Fujimoto1, Ryuichi Fujita11, Mitsuhiro Fukushima1, Toshifumi Futamase12, Katsuhiko Ganzu3, Tomohiro Harada13, Tatsuaki Hashimoto, Kazuhiro Hayama14, Wataru Hikida11, Yoshiaki Himemoto15, Hisashi Hirabayashi16, Takashi Hiramatsu2, Feng-Lei Hong17, Hideyuki Horisawa18, Mizuhiko Hosokawa19, Kiyotomo Ichiki2, Takeshi Ikegami17, Kaiki Taro Inoue20, Koji Ishidoshiro2, Hideki Ishihara5, Takehiko Ishikawa, Hideharu Ishizaki1, Hiroyuki Ito19, Yousuke Itoh21, S. Kamagasako2, Nobuki Kawashima20, Fumiko Kawazoe22, Hiroyuki Kirihara2, Naoko Kishimoto, Kenta Kiuchi6, Shiho Kobayashi23, Kazunori Kohri24, Hiroyuki Koizumi2, Yasufumi Kojima25, Keiko Kokeyama22, Wataru Kokuyama2, Kei Kotake1, Yoshihide Kozai, Hideaki Kudoh2, Hiroo Kunimori19, H. Kuninaka, Kazuaki Kuroda2, Keiichi Maeda6, Hideo Matsuhara, Yasushi Mino26, Osamu Miyakawa26, Shinji Miyoki2, Mutsuko Y. Morimoto, T. Morioka2, Toshiyuki Morisawa3, Shigenori Moriwaki2, Shinji Mukohyama2, Mitsuru Musha27, Shigeo Nagano19, Isao Naito, N. Nakagawa2, Kouji Nakamura1, Hiroyuki Nakano28, Ken-ichi Nakao5, Shinichi Nakasuka2, Yoshinori Nakayama29, E. Nishida22, Kazutaka Nishiyama, Atsushi J. Nishizawa3, Yoshito Niwa3, Masatake Ohashi2, Naoko Ohishi1, Masashi Ohkawa30, Akira Okutomi2, Kouji Onozato2, K. Oohara30, Norichika Sago31, Motoyuki Saijo31, Masa-aki Sakagami3, Shin-ichiro Sakai, Shihori Sakata22, Misao Sasaki3, Takashi Sato30, Masaru Shibata2, Hisa-aki Shinkai32, Kentaro Somiya33, Hajime Sotani34, Naoshi Sugiyama35, Yudai Suwa2, Hideyuki Tagoshi11, Kakeru Takahashi2, Tadayuki Takahashi, Hirotaka Takahashi36, Ryuichi Takahashi35, Akiteru Takamori2, Tetsushi Takano, Keisuke Taniguchi37, Atsushi Taruya2, Hiroyuki Tashiro3, M. Tokuda5, Masao Tokunari2, Morio Toyoshima19, Shinji Tsujikawa, Yoshiki Tsunesada38, Ken-ichi Ueda27, Masayoshi Utashima16, Hiroshi Yamakawa3, Kazuhiro Yamamoto1, Toshitaka Yamazaki1, Jun'ichi Yokoyama2, Chul-Moon Yoo3, Shijun Yoshida12, Taizoh Yoshino 
TL;DR: DECi-hertz Interferometer Gravitational wave Observatory (DECIGO) as discussed by the authors is the future Japanese space gravitational wave antenna, which aims at detecting various kinds of gravitational waves between 1 mHz and 100 Hz frequently enough to open a new window of observation for gravitational wave astronomy.
Abstract: DECi-hertz Interferometer Gravitational wave Observatory (DECIGO) is the future Japanese space gravitational wave antenna. It aims at detecting various kinds of gravitational waves between 1 mHz and 100 Hz frequently enough to open a new window of observation for gravitational wave astronomy. The pre-conceptual design of DECIGO consists of three drag-free satellites, 1000 km apart from each other, whose relative displacements are measured by a Fabry–Perot Michelson interferometer. We plan to launch DECIGO in 2024 after a long and intense development phase, including two pathfinder missions for verification of required technologies.

342 citations

Journal ArticleDOI
TL;DR: It is suggested that the gene for scotopic vision (rhodopsin) has evolved out of that for photopic sight (cone pigments) and that group Rh including vertebrate rhodopsins diverged from group M2 later.
Abstract: The chicken retina contains rhodopsin (a rod visual pigment) and four kinds of cone visual pigments. The primary structures of chicken red (iodopsin) and rhodopsin have been determined previously. Here we report isolation of three cDNA clones encoding additional pigments from a chicken retinal cDNA library. Based on the partial amino acid sequences of the purified chicken visual pigments together with their biochemical and spectral properties, we have identified these clones as encoding the chicken green, blue, and violet visual pigments. Chicken violet was very similar to human blue not only in absorption maximum (chicken violet, 415 nm; human blue, 419 nm) but also in amino acid sequence (80.6% identical). Interestingly, chicken green was more similar (71-75.1%) than any other known cone pigment (42.0-53.7%) to vertebrate rhodopsins. The fourth additional cone pigment, chicken blue, had relatively low similarity (39.3-54.6%) in amino acid sequence to those of the other vertebrate visual pigments. A phylogenetic tree of vertebrate visual pigments constructed on the basis of amino acid identity indicated that an ancestral visual pigment evolved first into four groups (groups L, S, M1, and M2), each of which includes one of the chicken cone pigments, and that group Rh including vertebrate rhodopsins diverged from group M2 later. Thus, it is suggested that the gene for scotopic vision (rhodopsin) has evolved out of that for photopic vision (cone pigments). The divergence of rhodopsin from cone pigments was accompanied by an increase in negative net charge of the pigment.

336 citations

Journal ArticleDOI
TL;DR: In this article, the wall structure phase diagram in nano-strips is established by numerical calculations, exhibiting a hitherto unknown wall type, the asymmetric transverse wall, and the diagram of the wall width parameter is obtained both from a one-dimensional fit of wall structure and from the domain wall motion velocity under field, the latter being more relevant to experiments.

332 citations

Journal ArticleDOI
TL;DR: In this paper, the results of measurements of ultra-low-frequency magnetic noise during a large earthquake (Ms=7.1) at Guam of 8 August, 1993 (depth ∼60 km).
Abstract: We report the results of measurements of ultra-low-frequency magnetic noise during a large earthquake (Ms=7.1) at Guam of 8 August, 1993 (depth ∼60 km). The ULF observing system is located in the Guam Island, about 65 km from the epicenter. Several distinct features of this analysis are summarized. (1) We have proposed rather sophisticated statistical analyses (monthly mean, standard deviation) in order to estimate the wave intensity and polarization (i.e. ratio Z/H). (2) A comparison between the ULF wave activity and ΣKp, is useful in distinguishing between the space geomagnetic pulsations and non-space emissions. (3) Then, the use of the ratio (Z/H) is found to be of essential importance in discrimating the emissions presumably of seismic origin from space plasma waves. (4) The statistical analysis of the temporal evolution of this ratio, has yielded that it shows a broad maximum only about one month before the earthquake, and this suggests that the emissions during this period are very likely to be magnetic precursors. (5) The temporal variation of Z component is similar to that for the Loma Prieta earthquake such that it shows a broad maximum ten days ∼ two weeks before the earthquake and another increase a few days before the earthquake. (6) The emissions presumably associated with the earthquake are of noise-like nature, and their main frequency is 0.02 ∼ 0.05 Hz (with maximum intensity ∼0.1 nT).

327 citations

Journal ArticleDOI
TL;DR: Evidence is given that this intrinsic pinning determines the threshold, and thus that the adiabatic spin torque dominates the domain wall motion in a perpendicularly magnetized Co/Ni nanowire, to achieve robust operation and low energy consumption in spintronic devices.
Abstract: The spin transfer torque is essential for electrical magnetization switching. When a magnetic domain wall is driven by an electric current through an adiabatic spin torque, the theory predicts a threshold current even for a perfect wire without any extrinsic pinning. The experimental confirmation of this 'intrinsic pinning', however, has long been missing. Here, we give evidence that this intrinsic pinning determines the threshold, and thus that the adiabatic spin torque dominates the domain wall motion in a perpendicularly magnetized Co/Ni nanowire. The intrinsic nature manifests itself both in the field-independent threshold current and in the presence of its minimum on tuning the wire width. The demonstrated domain wall motion purely due to the adiabatic spin torque will serve to achieve robust operation and low energy consumption in spintronic devices.

325 citations


Authors

Showing all 8079 results

NameH-indexPapersCitations
Mildred S. Dresselhaus136762112525
Matthew Nguyen131129184346
Juan Bisquert10745046267
Dapeng Yu9474533613
Riichiro Saito9150248869
Shun-ichi Amari9049540383
Shigeru Nagase7661722099
Ingrid Verbauwhede7257521110
Satoshi Hasegawa6970822153
Yu Qiao6948429922
Yukio Tanaka6874419942
Zhijun Li6861414518
Iván Mora-Seró6723523229
Kazuo Tanaka6353527559
Da Xing6362414766
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202317
202258
2021644
2020815
2019908
2018837