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Generating Irreducible Self-reciprocal Polynomials by Using Even Polynomial over F<SUB>q</SUB>
Shigeki Kobayashi,Yasuyuki Nogami,Tatsuo Sugimura 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7
This paper proposes a method of generating irreducible self?reciprocal polynomials by using even polynomial over Fq, where q is odd prime. First, we prepare an irreducible self?reciprocal polynomial F(x) in Fq[x] of degree 2m. Then, the proposed method repeatedly generates a lot of irreducible self?reciprocal polynomials of degree 2mby using F(x) as a seed. In this paper, the set of the generated polynomials is called loop. In general, all of them are not in one loop. This paper also shows a method for preparing a seed of another loop.
Ochiai, Satoru,Nomoto, Yoshihito,Kobayashi, Shigeki,Yamashita, Yasufumi,Watanabe, Yui,Toyomasu, Yutaka,Kawamura, Tomoko,Takada, Akinori,II, Noriko,Sakuma, Hajime Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.4
Prostate cancer is the secondary most frequently diagnosed cancer in the world. Although numerous prospective randomized trial have been conducted to guide the management of patients with localized or locally advanced prostate cancer, few clinical trials targeting node-positive prostate cancer have been reported. Therefore, there are still controversies in the optimal management of node-positive prostate cancer. Recently, efficacy of multimodality treatment, including radiation therapy (RT), for such patients has been reported in several articles. The results indicate potential benefit of RT both in adjuvant therapy after prostatectomy and in definitive therapy for node-positive prostate cancer. The aim in this article was to summarize the current evidence for RT and evaluate the role in multimodality treatment for patients with node-positive prostate cancer.
( Shinichiro Shinzaki ),( Toshimitsu Fujii ),( Shigeki Bamba ),( Maiko Ogawa ),( Taku Kobayashi ),( Masahide Oshita ),( Hiroki Tanaka ),( Keiji Ozeki ),( Sakuma Takahashi ),( Hiroki Kitamoto ),( Kazuh 대한장연구학회 2018 Intestinal Research Vol.16 No.4
Background/Aims: The influences of Helicobacter pylori eradication therapy on the disease course of inflammatory bowel disease (IBD) are still unclear. We therefore conducted a multicenter, retrospective cohort study to evaluate the safety of H. pylori eradication therapy for IBD patients. Methods: IBD patients with H. pylori eradication from 2005 to 2015 (eradication group) and control patients (non-eradication group; 2 paired IBD patients without H. pylori eradication matched with each eradicated patient) were included. IBD exacerbation (increased/additional IBD drug or IBD-associated hospitalization/surgery) and disease improvement based on the physicians’ global assessment were investigated at baseline, and at 2 and 6 months after eradication or observation. Results: A total of 429 IBD (378 ulcerative colitis, 51 Crohn’s disease) patients, comprising 144 patients in the eradication group and 285 patients in the non-eradication group, were enrolled at 25 institutions. IBD exacerbation was comparable between groups (eradication group: 8.3% at 2 months [odds ratio, 1.76; 95% confidence interval, 0.78-3.92; P=0.170], 11.8% at 6 months [odds ratio, 1.60; 95% confidence interval, 0.81-3.11; P=0.172]). Based on the physicians’ global assessment at 2 months, none of the patients in the eradication group improved, whereas 3.2% of the patients in the non-eradication group improved (P =0.019). Multivariate analysis revealed that active disease at baseline, but not H. pylori eradication, was an independent factor for IBD exacerbation during 2 months’ observation period. The overall eradication rate was 84.0%-comparable to previous reports in non-IBD patients. Conclusions: H. pylori eradication therapy does not alter the short-term disease activity of IBD. (Intest Res 2018;16:609-618)
A new species of the genus Coptotriche (Lepidoptera: Tischeriidae) from Okinawa Island, Japan
김형규,Sadahisa Yagi,Shigeki Kobayashi,Toshiya Hirowatari 국립중앙과학관 2022 Journal of Asia-Pacific Biodiversity Vol.15 No.3
A new Symplocos trumpet leafminer, Coptotriche yanbarensis Kim & Yagi sp. nov., feeding on S. stellaris and S. okinawensis (Symplocaceae) is described from Okinawa Island, Japan. The new species is distin guishable from the Japanese Symplocos feeding described species, C. symplocosella Kobayashi & Hir owatari, 2016 by the forewing coloration, the shape of genitalia, and also DNA barcode.
Magnetization Reversal and Chemical Pressure Effect in the Electron-doped Manganite CaMn0.95Sb0.05O3
Takahiro Fujiwara,Michiaki Matsukawa,Syuya Ohuchi,Satoru Kobayashi,Shigeki Nimori,Ramanathan Suryanarayanan 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.12
We have demonstrated the effect of Sr substitution on the temperature-dependent magnetizationreversal in the electron-doped manganite CaMn0.95Sb0.05O3. X-ray photoemission spectroscopyreveals the substitution of the Sb ion with its valence of 5+ at a Mn4+ site, resulting in oneeg-electron doping, which is consistent with the negative Seebeck coefficient previously reported. For the (Ca1−ySry)Mn0.95Sb0.05O3 system, anomalously-diamagnetic behaviors are observed fory ≤ 15% in the weak-field-cooled magnetization. For Sr contents beyond 15%, the behavior ofthe negative magnetization disappears. We believe that the local lattice distortion due to Sbsubstitution causes a tilting of the Jahn-Teller active Mn3+O6 octahedron and stabilizes the cantedspin state in a direction opposite that of applied field through the Dzyaloshinsky-Moriya interaction,thus contributing to the diamagnetic response.
The Influence of Tsunamis on Moored Ships and Ports
Kubo Masayoshi,Cho Ik-Soon,Sakakibara Shigeki,Kobayashi Eiichi,Koshimura Syunichi Korean Institute of Navigation and Port Research 2005 한국항해항만학회지 Vol.29 No.4
Planning for the construction of ports and harbors usually takes place without the consideration of tsunamis because of their rare occurrence, approximately once every 100 years. However, recent warnings indicate that massive earthquakes could occur in Japan within the next 30 years. Earthquakes may generate large-scale tsunamis. Therefore, any tsunamis in the vicinity of Japan would also be expected to affect eastern Korea. Therefore, with the looming concerns of tsunamis and earthquakes, immediate attention must be given to the planning of ports and harbors. The warnings deserve an immediate response. The threatened regions cover a very large territory, and the degree of severity of the tsunamis is forecasted to be varied. Therefore, any modeling of the potential scenarios will require a broad array of possibilities. The objective of this paper is to consider the potential damage from tsunamis to ports and moored ships in Japan and Korea. In addition, consideration will be given to how the construction plans of ports and harbors should be changed to cope with the threats from earthquakes and tsunamis.
The Influence of Tsunamis on Moored Ships and Ports
Masayoshi Kubo,Ik-Soon Cho,Shigeki Sakakibara,Eiichi Kobayashi,Syunichi Koshimura 한국항해항만학회 2005 한국항해항만학회지 Vol.29 No.4
Planning for the construction of ports and harbors usually takes place without the consideration of tsunamis because of their rare occurrence, approximately once every 100 years. However, recent warnings indicate that massive earthquakes could occur in Japan within the next 30 years. Earthquakes may generate large-scale tsunamis. Therefore, any tsunamis in the vicinity of Japan would also be expected to affect eastern Korea. Therefore, with the looming concerns of tsunamis and earthquakes, immediate attention must be given to the planning of ports and harbors. The warnings deserve an immediate response. The threatened regions cover a very large territory, and the degree of severity of the tsunamis is forecasted to be varied. Therefore, any modeling of the potential scenarios will require a broad array of possibilities. The objective of this paper is to consider the potential damage from tsunamis to ports and moored ships in Japan and Korea. In addition, consideration will be given to how the construction plans of ports and harbors should be changed to cope with the threats from earthquakes and tsunamis.