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by Yamagami, Keitaro and Kurogi, Ryota and Kurogi, Ai and Nishimura, Kunihiro and Onozuka, Daisuke and Ren, Nice and Kada, Akiko and Nishimura, Ataru and Arimura, Koichi and Ido, Keisuke and Mizoguchi, Masahiro and Sakamoto, Tetsuya and Kayama, Takamasa and Suzuki, Michiyasu and Arai, Hajime and Hagihara, Akihito and Iihara, Koji and Masayoshi, Takigami and Kenji, Kamiyama and Kiyohiro, Houkin and Shougo, Nishi and Tetsuyuki, Yoshimoto and Sadao, Kaneko and Koji, Oka and Hiroshi, Ooyama and Kyousuke, Kamada and Kenichi, Makino and Naoki, Tokumitsu and Kazuhiro, Sako and Susumu, Suzuki and Nozomi, Suzuki and Naoto, Izumi and Kazumi, Nitta and Masahumi, Ootaki and Masanori, Isobe and Mikio, Nishiya and Takaaki, Yamazaki and Syouji, Mabuchi and Kuniaki, Ogasawara and Naohiko, Kubo and Yukihiko, Shimizu and Keiichi, Saito and Tatumi, Yamanome and Atsuo, Yoshino and Mitsuyuki, Fujitsuka and Masaaki, Takami and Hirotoshi, Ohtaka and Teruyuki, Hirano and Yosiaki, Shiokawa and Takaharu, Okada and Ichiro, Suzuki and Michihiro, Kohno and Jou, Haraoka and Yoshinori, Arai and Noriyoshi, Kawamura and Akira, Isoshima and Masaharu, Yasue and Mitsuhiko, Hokari and Takayoshi, Kobayashi and Kensuke, Kawai and Taketoshi, Maehara and Hajime, Arai and Makoto, Noguchi and Haruhiko, Hoshino and Hirofumi, Hiyama and Kensaku, Yoshida and Osamu, Utsugi and Yasuaki, Takeda and Kouichi, Tamaki and Hirohide, Karasudani and Takao, Urabe and Shiro, Kobayashi and Michio, Nakamura and Yorio, Koguchi and Junichi, Ono and Sumio, Suda and Hiromu, Hadeishi and Toshio, Fukutake and Kenji, Wakui and Hirokazu, Tanno and Naoki, Ishige and Takashi, Ohasi and Hideki, Sakai and Yasuaki, Nishimura and Takayuki, Watanabe and Takashi, Matsumoto and Naoki, Koketsu and Yuichi, Hirose and Manabu, Doyu and Toshinori, Hasegawa and Naoto, Kuwayama and Shinichi, Terao and Nobuhiko, Mizutani and Noriyuki, Suzaki and Satoshi, Okuda and Keizo, Yasui and Yukio, Seki and Yasuhiro, Hasegawa and Akira, Ikeda and Youtarou, Takeuchi and ... and J-ASPECT Study Collaborators
World Neurosurgery, ISSN 1878-8750, 2019
Background: The epidemiology of patients with traumatic brain injury (TBI) has changed dramatically over recent decades as a result of rapid advances in aging... 
Aging | Hospital mortality | Prognosis | Traumatic brain injury | Subdural hematoma | Index Medicus
Journal Article
Proceedings of SPIE - The International Society for Optical Engineering, ISSN 0277-786X, 2011, Volume 8132.
Conference Proceeding
IEEE Transactions on Instrumentation and Measurement, ISSN 0018-9456, 06/2019, Volume 68, Issue 6, pp. 2183 - 2186
Journal Article
Web Resource
Journal of the Institute of Electrical Engineers of Japan, ISSN 1340-5551, 2017, Volume 137, Issue 7, pp. 426 - 429
Journal Article
Web Resource
Applied Physics B: Lasers and Optics, ISSN 0946-2171, 01/2017, Volume 123, Issue 1, pp. 1 - 5
The absolute frequency of the 87 Sr clock transition measured in 2015 (Jpn J Appl Phys 54:112401, 2015) was reevaluated using an improved frequency link to the... 
Frequency measurement
Journal Article
Journal of Physics: Conference Series, ISSN 1742-6588, 2012, Volume 397, Issue 1, pp. 12003 - 6
State-of-the-art optical clocks have surpassed microwave clocks in this century, causing discussions to redefine the SI second based on an optical transition.... 
Strontium | Optical lattices | Reproducibility | Lattices | Spectra | Microwaves | Standards | Clocks
Conference Proceeding
Scientific Reports, ISSN 2045-2322, 12/2018, Volume 8, Issue 1, pp. 4243 - 12
Time scales consistently provide precise time stamps and time intervals by combining atomic frequency standards with a reliable local oscillator. Optical... 
LATTICE CLOCK | ATOMIC CLOCKS | TIMESCALE | PRIMARY FREQUENCY STANDARDS | UTC | MICROWAVE-CLOCK | MULTIDISCIPLINARY SCIENCES | FOUNTAIN | UNCERTAINTY | LNE-SYRTE | PREDICTION | Standards
Journal Article
Optics Express, ISSN 1094-4087, 04/2017, Volume 25, Issue 8, pp. 8511 - 8523
SI-traceable measurements of optical frequencies using International Atomic Time (TAI) do not require a local primary frequency reference, but suffer from an... 
Journal Article
Applied Physics Letters, ISSN 0003-6951, 11/2017, Volume 111, Issue 20, p. 201107
A method of detecting Coherent Population Trapping resonance by phase modulation (PM) was studied to expand the frequency locking range (LR). We calculated... 
FREQUENCY-MODULATION | PHYSICS, APPLIED | SPECTROSCOPY | LASER | Error signals | Trapping | Frequency modulation | Frequency locking | Error analysis | Phase modulation | Mathematical analysis | Eigenvectors | Matrix methods | Frequency stability
Journal Article
Applied Physics B, ISSN 0946-2171, 1/2017, Volume 123, Issue 1, pp. 1 - 5
The absolute frequency of the $$^{87}\mathrm{Sr}$$ 87 Sr clock transition measured in 2015 (Jpn J Appl Phys 54:112401, 2015) was reevaluated using an improved... 
Quantum Optics | Engineering, general | Physics, general | Physical Chemistry | Physics | Optics, Lasers, Photonics, Optical Devices
Journal Article
Applied Physics B: Lasers and Optics, ISSN 0946-2171, 01/2017, Volume 123, Issue 1, p. 1
To access, purchase, authenticate, or subscribe to the full-text of this article, please visit this link: http://dx.doi.org/10.1007/s00340-016-6603-9 The... 
Journal Article
Japanese Journal of Applied Physics, ISSN 0021-4922, 11/2015, Volume 54, Issue 11, p. 112401
The absolute frequency of the Sr-87 lattice clock transition was evaluated with an uncertainty of 1.1 x 10(-15) using a frequency link to the international... 
TRANSITION | BASE-LINE | PHYSICS, APPLIED | SR LATTICE CLOCK | ABSOLUTE FREQUENCY | ATOMS | CANCELLATION | ACCURACY | Uncertainty | Lattices | Hydrogen masers | Links | Optical frequency | Oscillators | Clocks
Journal Article
Metrologia, ISSN 0026-1394, 04/2019, Volume 56, Issue 2, p. 1
We investigate an estimation strategy for multiple clock systems, which is in particular resilient against clock anomalies. The clock anomalies, including... 
Algorithms | Estimating techniques | Kalman filters | Clock systems | State estimation | Optimization | Anomalies | Clocks
Journal Article
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