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Akihiro Hachikubo,Koutarou Yamada,Taku Miura,Kinji Hyakutake,Kiyoshi Abe,Hitoshi Shoji 한국해양과학기술원 2004 Ocean and Polar Research Vol.26 No.3
The processes of formation and dissociation of gas hydrates were investigated by monitoring pressure and temperature variations in a pressure cell in order to understand the kinetic behavior of gas hydrate and the controlling factors for the phase transition of gas hydrate below freezing. Gas hydrates were made from guest gases (CH4, CO2 and their mixed-gas) and fine ice powder. We found that formation and dissociation speeds of gas hydrates were not controlled by temperature and pressure conditions alone. The results of this study suggested that pressure levels at the formation of mixed-gas hydrate determine the transient equilibrium pressure itself.
A Classifiable Sub-Flow Selection Method for Traffic Classification in Mobile IP Networks
( Akihiro Satoh ),( Toshiaki Osada ),( Toru Abe ),( Gen Kitagata ),( Norio Shiratori ),( Tetsuo Kinoshita ) 한국정보처리학회 2010 Journal of information processing systems Vol.6 No.3
Traffic classification is an essential task for network management. Many researchers have paid attention to initial sub-flow features based classifiers for traffic classification. However, the existing classifiers cannot classify traffic effectively in mobile IP networks. The classifiers depend on initial sub-flows, but they cannot always capture the sub-flows at a point of attachment for a variety of elements because of seamless mobility. Thus the ideal classifier should be capable of traffic classification based on not only initial sub-flows but also various types of sub-flows. In this paper, we propose a classifiable sub-flow selection method to realize the ideal classifier. The experimental results are so far promising for this research direction, even though they are derived from a reduced set of general applications and under relatively simplifying assumptions. Altogether, the significant contribution is indicating the feasibility of the ideal classifier by selecting not only initial sub-flows but also transition sub-flows.
A Classifiable Sub-Flow Selection Method for Traffic Classification in Mobile IP Networks
Satoh, Akihiro,Osada, Toshiaki,Abe, Toru,Kitagata, Gen,Shiratori, Norio,Kinoshita, Tetsuo Korea Information Processing Society 2010 Journal of information processing systems Vol.6 No.3
Traffic classification is an essential task for network management. Many researchers have paid attention to initial sub-flow features based classifiers for traffic classification. However, the existing classifiers cannot classify traffic effectively in mobile IP networks. The classifiers depend on initial sub-flows, but they cannot always capture the sub-flows at a point of attachment for a variety of elements because of seamless mobility. Thus the ideal classifier should be capable of traffic classification based on not only initial sub-flows but also various types of sub-flows. In this paper, we propose a classifiable sub-flow selection method to realize the ideal classifier. The experimental results are so far promising for this research direction, even though they are derived from a reduced set of general applications and under relatively simplifying assumptions. Altogether, the significant contribution is indicating the feasibility of the ideal classifier by selecting not only initial sub-flows but also transition sub-flows.
Hachikubo, Akihiro,Yamada, Koutarou,Miura, Taku,Hyakutake, Kinji,Abe, Kiyoshi,Shoji, Hitoshi Korea Institute of Ocean ScienceTechnology 2004 Ocean and Polar Research Vol.26 No.3
The processes of formation and dissociation of gas hydrates were investigated by monitoring pressure and temperature variations in a pressure cell in order to understand the kinetic behavior of gas hydrate and the controlling factors fur the phase transition of gas hydrate below freezing. Gas hydrates were made kom guest gases ($CH_4,\;CO_2$, and their mixed-gas) and fine ice powder. We found that formation and dissociation speeds of gas hydrates were not controlled by temperature and pressure conditions alone. The results of this study suggested that pressure levels at the formation of mixed-gas hydrate determine the transient equilibrium pressure itself.
Horikoshi, Satoshi,Tsuchida, Akihiro,Sakai, Hideki,Abe, Masahiko,Sato, Susumu,Serpone, Nick Korean Society of Photoscience 2009 Photochemical & photobiological sciences Vol.8 No.11
A metallic condensing cone that concentrates microwave radiation (equivalent to an optical lens) has been developed and used as part of a system to activate a microwave discharge electrodeless lamp (MDEL) in the oxidative treatment of wastewaters by aiding the novel self-ignition of the lamp on irradiation at low microwave power levels. This approach to self-ignition can potentially lead to considerable energy savings in such treatments. System performance was examined for the ignition power of microwaves of such MDEL devices in water, whose usefulness was assessed by investigating the photolytic transformation of aqueous solutions of representatives of three classes of contaminants: chlorinated phenols, herbicides and endocrine disruptors, specifically 4-chlorophenol (4-CP), 2,4-dichlorophenoxyacetic acid (2,4-D) and 4,4'-isopropylidenediphenol (bisphenol-A; BPA), respectively, taken as model wastewaters in air-equilibrated, in oxygen-saturated and in $TiO_2$-containing aqueous media. The results are discussed in terms of the dynamics of the photo-induced degradation processes.
Vacuum Phenomenon of the Sacroiliac Joint: Correlation with Sacropelvic Morphology
Yoichiro Takata,Kosaku Higashino,Masatoshi Morimoto,Toshinori Sakai,Kazuta Yamashita,Mitusnobu Abe,Akihiro Nagamachi,Koichi Sairyo 대한척추외과학회 2016 Asian Spine Journal Vol.10 No.4
Study Design: A radiologic study of sacropelvic morphology and vacuum phenomenon of sacroiliac joint in subjects unrelated to low back pain. Purpose: The aim of this study is to describe the relationship between sacropelvic morphology and vacuum phenomenon of the sacroiliac joint. Overview of Literature: Lumbopelvic alignment and sacropelvic morphology are associated with the pathomechanisms of various spinal disorders. The vacuum phenomena of the sacroiliac joint (SJVP) are often observed in clinical practice, but the relationships between these phenomena and sacropelvic morphology have not been investigated. This study examined the prevalence of SJVP in computed tomography (CT) images and the relationship between sacropelvic morphology and SJVP. Methods: We analyzed multiplanar CT images of 93 subjects (59 men, 34 women). Pelvic incidence (PI), pelvic tilt (PT), sacral slope (SS), and lumbar lordosis (LL) were measured using the three-dimensional reconstruction method. The prevalence of SJVP in multiplanar CT images were reviewed. Roland-Morris Disability Questionnaire (RDQ) scores and the modified Japanese Orthopedic Association (JOA) score, which focuses on subjective symptoms and restriction of activities of daily living, were also obtained from all the subjects. Results: Thirty-six of the 93 subjects had SJVP (39%), with marked female predominance (91% women, 8.5% men). Men with SJVP had significantly lower PI than men without SJVP (35.1° vs. 46.3°, p <0.05). There was no correlation between SJVP and the modified JOA or RDQ scores. Conclusions: These data suggest that differences in sacropelvic morphology can influence the biomechanical environment and contribute to SJVP in men. Presence of SJVP did not affect JOA or RDQ scores.