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Chihiro Yasushita,Hideki Kato,Masato Kakihana 한국정보디스플레이학회 2012 Journal of information display Vol.13 No.3
An almost pure phase of Ba3Si6O12N2 doped with Eu2+ was successfully synthesized through the ammonia nitridation of an oxide precursor prepared through an aqueous-solution method, using propylene- glycol-modified silane. The emission peak intensity of the obtained Ba3Si6O12N2:Eu2+ was −2.2 times higher than that of the sample prepared through a solid-state reaction method.
Chihiro Suematsu 한국중소기업학회 2018 기업가정신과 벤처연구 Vol.20 No.4
Kyocera Corporation is an electronic device, information equipment, and telecommunications equipment manufacturing company headquartered in Kyoto, Japan. The company’s success has depended on its differentiated technology in ceramic manufacturing at the first stage. This technology was first sold to produce a part in TV CRT monitors, which boomed in the 1960s right after the company’s launch. Since its founding in 1959, the company has been continuously exploring technological, product, and business development backed by its strong entrepreneurial mindset. This mindset is nurtured by the “Kyocera philosophy,” the most important vision and motto of the company, which educates and encourages employees to grow themselves, respect others, and behave for all. This philosophy was advocated by the founder, Kazuo Inamori.
Revised RBF network algorithm and its application to the interactive art system
Chihiro Kondo,Tadashi Kondo 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
In this study, a revised radial basis function (RBF) network is proposed and applied to the identification problems of the nonlinear system and the interactive art system. In the revised RBF network, the structural parameters such as means and variances of the radial basis functions in the neurons are determined automatically and so revised RBF network can be easily applied to the practical complex problems such as the interactive art system. The interactiveart system outputs the art expressions such as the sound and graphics using the artificial sensibility curves that are identified using the revised RBF network.
Chihiro Kondo,Tadashi Kondo 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
A revised Group Method of Data Handling (GMDH)-type neural network algorithm for medical image recognition is proposed and is applied to 3-dimensional medical image analysis of the heart. The revised GMDH-type neural network algorithm has a feedback loop and can identify the characteristics of the medical images accurately using feedback loop calculations. In this algorithm, the polynomial type and the radial basis function (RBF) type neurons are used for organizing the neural network architecture. The optimum neural network architecture fitting the complexity of the medical images is automatically organized so as to minimize the prediction error criterion defined as Prediction Sumof Squares (PSS).
Chihiro Arai,Jae Won Choi,Kazutoshi Nakaoka,Yoshiki Nakamura 대한치과교정학회 2015 대한치과교정학회지 Vol.45 No.3
This case report describes the orthodontic treatment performed for open bite caused by internal derangement (ID) and osteoarthritis (OA) of the temporomandibular joint (TMJ). A Japanese woman, aged 31 years and 11 months, referred to our department by an oral surgeon had an open bite with clockwise rotation of the mandible and degeneration of the condyle. The overbite was corrected through intrusion of the maxillary and mandibular molars using mini-screw implants to induce counterclockwise rotation of the mandible. Then, the mandibular second premolars were extracted and comprehensive orthodontic treatment was performed to establish a Class I molar relationship with distalization of the maxillary arch and to eliminate anterior crowding. Following treatment, her facial profile improved and a functional and stable occlusion was achieved without recurrence of the TMJ symptoms. These results suggest that orthodontic intrusion of the molars is one of the safer and less stressful alternatives for the management of open bite due to degeneration of the condyles caused by ID and OA of TMJ.
Invited Lecture : Droplets in Sparkling Firework
( Chihiro Inoue ) 한국액체미립화학회 2015 한국액체미립화학회 학술강연회 논문집 Vol.2015 No.-
Physics behind the beauty of sparkling fireworks is hidden mystery in last 400 years. In this few years, however, we have uncovered some part of that. It is known that there are four seasons in a life of the fireworks. In the mid-seasons, the beautiful streaks of light similar to pine-needles scatter from the mother fireball with soothing sounds. Surprisingly, the streaks of lights are results of successive fragmentation of droplets, which react with surrounding oxygen and can burst up to ten times. We have clarified that the initial droplets are produced by bursting bubbles on the mother fireball. By using two color temperature radiometry method, unsteady temperature measurement are firstly conducted. The surface temperature of a droplet rises up to the melting temperature of K2SO4, which is a component of the droplet. It is elucidated that the thermal decomposition inside the droplet produces a bubble to expand and burst the droplet. The lifetime of droplets are theoretically formulated and validated by the experimental results.
Thermoelectric Properties of the Kondo Semiconductor CeRu4As12 Prepared under High Pressure
Chihiro Sekine,Tomokazu Kawata,Yukihiro Kawamura,Takehiko Yagi 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.3
The thermoelectric properties of the Kondo semiconductor CeRu4As12 with a filled skutteruditetypestructure have been studied. The compound CeRu4As12 exhibits a hybridization gap insulatingstate with a small activation energy of 50 K. We report further results for CeRu4As12 synthesized athigh temperatures and high pressures. Seebeck-coefficient and thermal-conductivity measurementshave been performed on this material. The temperature dependence of the Seebeck coefficient forCeRu4As12 shows two peaks (around 90 K and 280 K). The phenomena could be related to theKondo behavior at high temperatures and a hybridization gap-formation process at low temperatures.