著者

原 和彦 金 信弘 大川 英希 佐藤 構二 受川 史彦 ATLAS Collaboration Hara K. Kim S.H. Okawa H. Sato K. Ukegawa F.

出版者

Springer

雑誌

Journal of high energy physics (ISSN:10298479)

巻号頁・発行日

vol.2018, no.6, 2018-06

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This paper presents a search for direct electroweak gaugino or gluino pair production with a chargino nearly mass-degenerate with a stable neutralino. It is based on an integrated luminosity of 36.1 fb−1 of pp collisions at s√=13 TeV collected by the ATLAS experiment at the LHC. The final state of interest is a disappearing track accompanied by at least one jet with high transverse momentum from initial-state radiation or by four jets from the gluino decay chain. The use of short track segments reconstructed from the innermost tracking layers significantly improves the sensitivity to short chargino lifetimes. The results are found to be consistent with Standard Model predictions. Exclusion limits are set at 95% confidence level on the mass of charginos and gluinos for different chargino lifetimes. For a pure wino with a lifetime of about 0.2 ns, chargino masses up to 460 GeV are excluded. For the strong production channel, gluino masses up to 1.65 TeV are excluded assuming a chargino mass of 460 GeV and lifetime of 0.2 ns.

著者

Norman D. Cook

出版者

Springer

巻号頁・発行日

2010

著者

Kobayashi Fumiya Toyama Masahiro Koizumi Itsuro

出版者

Springer

雑誌

Biological Invasions (ISSN:13873547)

巻号頁・発行日

vol.16, no.7, pp.1453-1464, 2014-07

著者

Hashimoto Junichi Kishimoto Akihiro Yoshizoe Kazuki Ikeda Kokolo

出版者

Springer

雑誌

Lecture Notes in Computer Science (ISSN:03029743)

巻号頁・発行日

vol.7168, pp.1-12, 2012

被引用文献数

6

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Monte-Carlo Tree Search (MCTS) is a very successful approach for improving the performance of game-playing programs. This paper presents the Accelerated UCT algorithm, which overcomes a weakness of MCTS caused by deceptive structures which often appear in game tree search. It consists in using a new backup operator that assigns higher weights to recently visited actions, and lower weights to actions that have not been visited for a long time. Results in Othello, Havannah and Go show that Accelerated UCT is not only more effective than previous approaches but also improves the strength of FUEGO, which is one of the best computer Go programs.

著者

Okada Masako Hoang Hai Tamori Akihiro Uchida-Kobayashi Sawako Enomoto Masaru Kumada Hiromitsu Kawada Norifumi

出版者

Springer

雑誌

Clinical Journal of Gastroenterology (ISSN:18657265)

巻号頁・発行日

vol.12, no.3, pp.213-217, 2018-11-16

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There have been a few reports on the treatment of patients infected with recombinant hepatitis C virus (HCV) genotype 2/1 strains with direct acting antivirals (DAAs). We experienced three patients with genotype 2/1 recombinant HCV, treated with DAAs successfully. The first, a 39-year-old man, was infected with recombinant HCV genotype 2a/1b, a rare variant....

著者

Mark de Berg ...

出版者

Springer

巻号頁・発行日

2000

著者

Taguchi Shigeru Andrea Altobrando editors

出版者

Springer

巻号頁・発行日

2019

著者

Nakagawa Nobuhiko Yamada Suguru Sonohara Fuminori Takami Hideki Hayashi Masamichi Kanda Mitsuro Kobayashi Daisuke Tanaka Chie Nakayama Goro Koike Masahiko Fujiwara Michitaka Kodera Yasuhiro

出版者

Springer

雑誌

Annals of Surgical Oncology (ISSN:10689265)

巻号頁・発行日

vol.27, no.3, pp.887-895, 2020-03

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Background: Nutritional and immunological statuses are attracting increasing attention for their ability to predict surgical outcomes in various cancers. The Naples prognostic score (NPS) consists of the serum albumin level, total cholesterol level, neutrophil-to-lymphocyte ratio, and lymphocyte-to-monocyte ratio and could be useful for predicting survival. Patients and Methods: We retrospectively analyzed 196 patients with pancreatic cancer who underwent curative R0/R1 resection with a surgery-first strategy between June 2003 and August 2016. The NPS of the patients was calculated from preoperative data, and the patients were then divided into three groups based on their NPS. Clinicopathological characteristics, surgical outcomes, and long-term survival were compared, and multivariate analysis of overall survival was conducted. Results: Of a total of 196 patients, 22 were classified into group 0 (NPS 0), 113 into group 1 (NPS 1 or 2), and 61 into group 2 (NPS 3 or 4). Median survival time was 103.4 months in group 0, 33.3 months in group 1, and 21.3 months in group 2. Significant survival differences were observed among the 3 groups (group 1 vs. 2, group 0 vs. 2, P = 0.0380, P = 0.0022, respectively). On multivariate analysis, NPS was identified as an independent prognostic factor [hazard ratio (HR) = 1.78; P = 0.0131]; however, there were no significant differences in the incidence of postoperative morbidity among the NPS groups. Conclusions: The NPS could be an easy scoring system and an independent preoperative predictor of survival.

著者

Hatakeyama Masaomi Hashimoto Takashi

出版者

Springer

雑誌

Artificial Life and Robotics (ISSN:14335298)

巻号頁・発行日

vol.13, no.2, pp.500-503, 2009-03

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We propose a kind of self-amendment game, Minimum Nomic, as a model to study rule dynamics. Nomic is a game in which changing a rule of the game is a move. Minimum Nomic is a reduced version of the original Nomic, which keeps the essence but promotes the evolvability of the self-amendment game. We discuss the characteristics of Minimum Nomic from the viewpoint of how the changeability of the rules and the durability of the games change with the progress of the game. By analyzing the dynamics of purpose and goals, and the self-referential property in observations of the games played, we claim that Minimum Nomic is an interesting tool to study rule dynamics.

著者

Adrian Wallwork

出版者

Springer

巻号頁・発行日

2016

著者

Patrick G. J. Irwin

出版者

Springer

巻号頁・発行日

2003

著者

Millard F. Beatty Jr.

出版者

Springer

巻号頁・発行日

2006

著者

Mattia Gallotti John Michael editors

出版者

Springer

巻号頁・発行日

2014

著者

Hioki Nanako Kuma Kenshi Morita Yuichiroh Miura Daichi Ooki Atsushi Tanaka Seiji Onishi Hiroji Takatsu Tetsuya Kobayashi Naoto Kamei Yoshihiko

出版者

Springer

雑誌

Journal of oceanography (ISSN:09168370)

巻号頁・発行日

vol.71, no.6, pp.703-714, 2015-12

被引用文献数

10

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We studied iron remobilization and nutrient regeneration in bottom water of Funka Bay, Japan, bimonthly from August 2010 to December 2011. The bay basin (bottom depth, 92-96 m) is separated from the northwest Pacific Ocean at its mouth by a sill with a depth of 60 m. After a spring phytoplankton bloom during early March-early April, nutrients in bay bottom water tended to accumulate with time until August-September, and to increase gradually with depth during April-October, by the oxidative decomposition of settling particulate organic matter on the bay bottom. In contrast, the process of iron remobilization into bottom water of the bay is remarkably different from nutrient regeneration. The much higher concentrations of dissolved and total dissolvable iron near the bottom and the seasonally variable relationship between dissolved iron concentration and apparent oxygen utilization in bay bottom water likely reflect a balance between dissolved iron input and removal processes within the bay bottom water. The release of soluble Fe(II) from reducing bay sediments might induce the high concentrations of dissolved and total dissolvable iron in deep-bottom waters of Funka Bay and might be one of the most important sources of iron in Funka Bay. The upward transport of iron from the bay bottom to the surface water during the winter vertical mixing may play an important role in the supply of bioavailable iron for phytoplankton growth in the coastal waters.

著者

Avihu Zakai

出版者

Springer

巻号頁・発行日

2016

著者

Hiramine Yutaka ヒラミネ ユタカ 平峰 豊

出版者

Springer

雑誌

Designs, Codes and Cryptography (ISSN:09251022)

巻号頁・発行日

vol.56, no.1, pp.21-33, 2010-07

被引用文献数

2

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It is well known that there exists a transversal design TD_λ[k; u] admitting a class regular automorphism group U if and only if there exists a generalized Hadamard matrix GH(u, λ) over U. Note that in this case the resulting transversal design is symmetric by Jungnickel's result. In this article we define a modified generalized Hadamard matrix and show that transversal designs which are not necessarily symmetric can be constructed from these under a modified condition similar to class regularity even if it admits no class regular automorphism group.

著者

volume editor K. Kubitzki

出版者

Springer

巻号頁・発行日

2004

著者

edited by G.F. Bassani and the Council of the Italian Physical Society [English translation of the original Italian texts by P. Radicati di Brozolo ... et al.]

出版者

Springer

巻号頁・発行日

2006

著者

volume editors K. Kubitzki and C. Bayer

出版者

Springer

巻号頁・発行日

2003

著者

Nimrod Bar-Am

出版者

Springer

巻号頁・発行日

2008