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Target-Composition Effect on Hydroxyapatite Thin Films Coated on Titanium by r.f. Sputtering
Hamagami, Jun-ichi,Kokubu, Daisuke,Umegaki, Takao,Yamashita, Kimihiro The Korean Ceramic Society 1998 The Korean journal of ceramics Vol.4 No.4
Using calcium-phosphate-powder targets with the Ca/P ratios of 1.0-1.67, hydroxyapatite ($Ca_{10}(PO_4)_6(OH)_2$, HAp) thin films with 4-7㎛ thickness were prepared on titanium metal plates by r.f. magnetron sputtering, followed an annealing at $200^{\circ}C$ for 24 hr under a high water vapor pressure using an autoclave. All the specimens were systematically characterized by XRD, FT-IR, SEM and EDS analyses. The post-annealed films were confirmed to be a nonstoichiometric oxyhydroxyapatite by XRD and FT-IR measurements.
Utilization of Humorous Scenes in Movies for English Education
Keina Hamagami 영상영어교육학회 2014 영상영어교육 (STEM journal) Vol.15 No.3
The aim of this study is to illustrate the metonymical system seen in some humorous scenes in movies and to propose some models of classroom language instruction that utilize these humorous scenes. In this paper, two plans are proposed for college or university language classes using metonymical humorous scenes. Metonymy is the linguistic phenomenon of “meaning shift” in a word or expression. It occurs in many kinds of cognitive frames, and can produce humorous expressions. The lesson plans—one using a humorous scene prepared by the teacher and the other using humorous scenes prepared by the students—are based primarily on group activities and suggest a potential application of movies in the classroom, since they show that using movies in class allows complex language activities. In various activities designed to determine what makes a line humorous and to share this knowledge, students will read a large amount of material, analyze the context, and present their findings orally—all of which will enhance the students’ English competence. In addition, the humorous movie scenes are so appealing and motivate students so strongly that they encourage students to work by themselves and to act as independent learners.
A New Robust Technique for Constructing Intelligent Environment using Video Image
Someya, Naoki,Shi, Hongbo,Hamagami, Tomoki The Korean Institute of Electrical Engineers 2013 The Journal of International Council on Electrical Vol.3 No.2
A new robust technique for constructing intelligent environment with video image for mobile robots is proposed. The state of the art of the technique is an approach using autonomous extraction of feature from video images which captured in daily activities. Intelligent space embedded several sensors for supporting human activities are expected to expand future information infrastructure. However, in terms of practically, the robustness and computational cost are significant issues. In order to extract the feature robustly and to resolve an issue of tradeoff between accuracy and computational cost, support vector machine (SVM) is implemented for the classification and detection. Experiments in real world are conducted to evaluate the algorithm. The results show that the technique enables to detect image tag for constructing intelligent space.
NOTE - Determination of UVA Protection Factor with SPEX SkinSkan
Kawada, Akira,Kameyam, Hiroko,Sangen, Yoshiko,Aragane, Yoshinori,Tezuka, Tadashi,Hamagami, Ikuko Korean Society of Photoscience 2003 Journal of Photosciences Vol.10 No.2
SPEX SkinSkan is a newly developed spectrofluorometer that can calculate transmission of UVA on the surface of human skin as a non-invasive method. We have investigated UVA protection factors of Japanese over-the-counter sunscreens using SPEX SkinSkan. This non-invasive method is useful to know UVA protection of sunscreens in vivo.