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Lee, Young-June,Masami Hayashi Korean Society of Applied Entomology 2004 Journal of Asia-Pacific Entomology Vol.7 No.1
As the third part of the taxonomic review of Cicadidae (Hemiptera, Auchenorrhyncha) from Taiwan, 18 species belonging to six genera in cicadine tribes, Dundubiini (two other genera of Cicadina) and Moganiini, and a tibicinine tribe, Huechysini, are treated in this paper. A new genus, Formocicada Lee and Hayashi, and two new species, Tanna infuscata Lee and Hayashi and Formocicada taiwana Lee and Hayashi, are described. Four species are synonymized: Tanna taikosana Kato, 1925 and Tanna horiensis Kato, 1926 with Tanna taipinensis (Matsumura, 1907), and Tanna horishana Kato, 1925 and Tanna tarowanensis (Matsumura, 1927) with Tanna viridis Kato, 1925. Cryptotympana facialis (Walker, 1858), Cosmopsaltria doryca (Boisduval, 1835), and Leptopsaltria tuberosa (Signoret, 1847) are newly considered as species erroneously recorded from Taiwan. Informations on the biology and male chirpings are also provided.
Fabrication of Nanocomposite Powders by Sonochemical Method
Hayashi, Yamato,Sekino, Tohru,Niihara, Koichi The Korean Powder Metallurgy Institute 2001 한국분말재료학회지 (KPMI) Vol.8 No.3
Nano particles have recently been a major research interest, motivated by their unusual physical and chemical properties. Such particles can be synthesized using physical and chemical methods. The physical methods need expensive installation like vacuum induction furnace, whereas in chemical methods the process in generally very simple and low cost. In this study, simple and new fabrication process by using ultrasound was investigated to prepare the nano-sized metal particles on various powders at room temperature.
Constraints on GUT 7-brane topology in F-theory
Hayashi, H.,Kawano, T.,Watari, T. North-Holland Pub. Co 2012 Physics letters: B Vol.708 No.1
We study the relation between phenomenological requirements and the topology of the surfaces that GUT 7-branes wrap in F-theory compactifications. In addition to the exotic matter free condition in the hypercharge flux scenario of SU(5)<SUB>GUT</SUB> breaking, we analyze a new condition that comes from a discrete symmetry aligning the contributions to low-energy Yukawa matrices from a number of codimension-three singularity points. We see that the exotic matter free condition excludes Hirzebruch surfaces (except F<SUB>0</SUB>) as the GUT surface, correcting an existing proof in the literature. We further find that the discrete symmetry for the alignment of the Yukawa matrices excludes del Pezzo surfaces and a rational elliptic surface as the GUT surface. Therefore, some GUT 7-brane surfaces are good for some phenomenological requirements, but sometimes not for others, and this aspect should be kept in mind in geometry search in F-theory compactifications.
Studies on Microstructural Phenomena Caused by Atomic Diffusion in Sintered Materials
Hayashi, Koji The Korean Powder Metallurgy Institute 2003 한국분말재료학회지 (KPMI) Vol.10 No.6
During the sintering of powder materials, many these are microstructural phenomena are caused by atomic diffusion. (1) neck formation and compact densification, (2) grain growth, i.e., growth of matrix grains and dispersed grains, (3) alloying or generation of compound, (4) generations of peculiar and hard layers near sintered compact surface, etc. The studies of the present author and co-workers on these phenomena which were carried out during 40 years are briefly introduced.
Hayashi Koji 한국분말야금학회 2006 한국분말야금학회 학술대회논문집 Vol.2006 No.1
High functional micro devices are demanded in a variety of fields. For realising such demands, development of high-precision micro-components installed in the devices are needed. To achieve high-precision in the mold processing of micro-components, the development of mold materials, i.e., the development of WC-Co hardmetal with higher hardness and fracture strength is essential, together with the developments of processing technology of high precision mold and mold-forming technology of high precision micro-components, etc. The role of development of the finer submicro-grained hardmetal in a NEDO national project aiming the integrated development of these all technologies and some results are mainly explained.
심포지엄 논문(論文) : 「듣기」프로피션시(proficiency)를 위해서 -학습자에 의한 일본인 인터뷰로부터-
( Hayashi Tomoko ) 한국일어교육학회 2011 일본어교육연구 Vol.0 No.20
文字や語彙·文法といった言語知識の習得を中心としてきた日本語敎育は、現在、コミュニケ―ション能力を重視したコミュニケ―ションの敎育へ確實に移行している。本稿は、日本語學習者による「日本人觀光客へのインタビュ―」の對話の中で見られた「對面聽解」での問題の事例をあげながら、プロフィシェンシ―を重視した效果的な聽解敎育について考えていく。プロフィシェンシ―を「タスク遂行能力」、つまり、「運用できる能力」であると捉える場合、形式と意味のマッピング、すなわち「意味理解」が重要になる。そのためには、a「場面と形式」、b「內容の予測·推測」、c「聞き返し」のストラテジ―を重視した敎材や敎授法を開發し、選擇する必要がある。さらに、プロフィシェンシ―の考え方は、學習者が自分の言語の力がどこに位置しているかの「氣づき」を重視し、自己診斷を含めた「氣づかせ」の敎育が大きな意味を持っている。學習者の主體的なメタ認知能力を育成することが、學習者自身の「聞く」プロフィシェンシ―、ひいては、日本語能力の向上につながると考える。