1 0 0 0 OA New species of the genus Scolecostigmina and revision of Cercospora cryptomeriicola on conifers
- 著者
- Chiharu Nakashima Tadashi Akashi Yukiko Takahashi Toshihiro Yamada Mitsuteru Akiba Takao Kobayashi
- 出版者
- The Mycological Society of Japan
- 雑誌
- Mycoscience (ISSN:13403540)
- 巻号頁・発行日
- vol.48, no.4, pp.250-254, 2007 (Released:2023-03-31)
- 被引用文献数
- 1
Scolecostigmina chibaensis on Pinus parviflora is described as a new species. Cercospora cryptomeriicola Sawada on Cryptomeria japonica is transferred to the genus Pseudocercospora, based on the morphological characteristics of the type specimen and newly collected specimens.
- 著者
- Takashi Kato Akihiko Takahashi Toshihiro Yamada
- 出版者
- 一般社団法人 日本応用数理学会
- 雑誌
- JSIAM Letters (ISSN:18830609)
- 巻号頁・発行日
- vol.5, pp.17-20, 2013 (Released:2013-03-06)
- 参考文献数
- 3
- 被引用文献数
- 2 7
This paper derives a new semi closed-form approximation formula for pricing an up-and-out barrier option under a certain type of stochastic volatility model including SABR model by applying a rigorous asymptotic expansion method developed by Kato, Takahashi and Yamada (2012). We also demonstrate the validity of our approximation method through numerical examples.