Zobrazeno 1 - 10
of 10 397
pro vyhledávání: '"Sasai A"'
Publikováno v:
Journal of Lightwave Technology, 2024
This paper presents analytical results on the accuracy of fiber-longitudinal optical power monitoring (LPM) at arbitrary positions. To quantify the accuracy, the position-wise variance and power-profile SNR of LPM are defined and analyzed, yielding f
Externí odkaz:
http://arxiv.org/abs/2410.12602
Autor:
Sasai, Takeyuki, Fujisawa, Hironori
We investigate a problem estimating coefficients of linear regression under sparsity assumption when covariates and noises are sampled from heavy tailed distributions. Additionally, we consider the situation where not only covariates and noises are s
Externí odkaz:
http://arxiv.org/abs/2408.01336
Autor:
Sato, Motoshige, Tomeoka, Kenichi, Horiguchi, Ilya, Arulkumaran, Kai, Kanai, Ryota, Sasai, Shuntaro
Brain-computer interfaces (BCIs) hold great potential for aiding individuals with speech impairments. Utilizing electroencephalography (EEG) to decode speech is particularly promising due to its non-invasive nature. However, recordings are typically
Externí odkaz:
http://arxiv.org/abs/2407.07595
Autor:
Nishizawa, Hideki, Borraccini, Giacomo, Sasai, Takeo, Huang, Yue-Kai, Mano, Toru, Anazawa, Kazuya, Namiki, Masatoshi, Usui, Soichiroh, Matsumura, Tatsuya, Sone, Yoshiaki, Wang, Zehao, Okamoto, Seiji, Inoue, Takeru, Ip, Ezra, D'Amico, Andrea, Chen, Tingjun, Curri, Vittorio, Wang, Ting, Asahi, Koji, Takasugi, Koichi
We propose methods and an architecture to conduct measurements and optimize newly installed optical fiber line systems semi-automatically using integrated physics-aware technologies in a data center interconnection (DCI) transmission scenario. We dem
Externí odkaz:
http://arxiv.org/abs/2403.16281
Publikováno v:
Journal of Lightwave Technology, 2023
This paper presents a linear least squares method for fiber-longitudinal power profile estimation (PPE), which estimates an optical signal power distribution throughout a fiber-optic link at a coherent receiver. The method finds the global optimum in
Externí odkaz:
http://arxiv.org/abs/2310.04936
Autor:
Yosuke Osuka, Narumi Kojima, Kaori Daimaru, Risa Ono, Masamitsu Sugie, Takuya Omura, Keiko Motokawa, Takuya Ueda, Kazushi Maruo, Toshihiko Aoyama, Shigeru Inoue, Hiroyuki Sasai
Publikováno v:
Journal of Epidemiology, Vol 34, Iss 10, Pp 467-476 (2024)
Background: Radio-Taiso, a long-standing exercise program in Japan, could be a sustainable public health strategy for maintaining quality of life (QoL) in older adults with frailty. This study aimed to investigate whether Radio-Taiso provided greater
Externí odkaz:
https://doaj.org/article/80e627c1f8774ea690394a87e24e95e3
Autor:
Tokuju Okano, Hiroshi Ashida, Noriko Komatsu, Masayuki Tsukasaki, Tamako Iida, Marie Iwasawa, Yuto Takahashi, Yasuo Takeuchi, Takanori Iwata, Miwa Sasai, Masahiro Yamamoto, Hiroshi Takayanagi, Toshihiko Suzuki
Publikováno v:
International Journal of Oral Science, Vol 16, Iss 1, Pp 1-16 (2024)
Abstract Clinical studies have shown that Aggregatibacter actinomycetemcomitans (A. actinomycetemcomitans) is associated with aggressive periodontitis and can potentially trigger or exacerbate rheumatoid arthritis (RA). However, the mechanism is poor
Externí odkaz:
https://doaj.org/article/dcc49346b1834b0b8905fe5ed7f09f4d
Autor:
Sasai, Takeyuki
We tackle estimating sparse coefficients in a linear regression when the covariates are sampled from an $L$-subexponential random vector. This vector belongs to a class of distributions that exhibit heavier tails than Gaussian random vector. Previous
Externí odkaz:
http://arxiv.org/abs/2304.11958
Potential of Kinect-assessed stepping test for assessing fall risk in community-dwelling older women
Autor:
Nobuo Takeshima, Eiji Fujita, Takeshi Kohama, Yosuke Osuka, Narumi Kojima, Masanobu Kusunoki, William F. Brechue, Hiroyuki Sasai
Publikováno v:
Archives of Gerontology and Geriatrics Plus, Vol 1, Iss 4, Pp 100077- (2024)
Background: Previously, we have shown that movement path distance and displacement during a 20-sec stepping test (ST) discriminates between independent and dependent-living older adults. The present study aims to determine whether movement and displa
Externí odkaz:
https://doaj.org/article/a60b8c852d794965a761b7e1018f59a6
Autor:
Asako Haraguchi, Jyunki Nagasawa, Kouji Kuramochi, Sayaka Tsuchida, Atsushi Kobayashi, Toshimitsu Hatabu, Kazumi Sasai, Hiromi Ikadai, Kazunari Ushida, Makoto Matsubayashi
Publikováno v:
International Journal for Parasitology: Parasites and Wildlife, Vol 25, Iss , Pp 100967- (2024)
The Japanese rock ptarmigan (Lagopus muta japonica) is an herbivorous species of partridges that inhabits only alpine zones. Alpine plants are their main source of food. These alpine plants contain toxic compounds to deter herbivores from consuming t
Externí odkaz:
https://doaj.org/article/849ef4176afc4c31badf844632bb0d7d