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Human Behavior recognition Using Regression Models
Mamoru Saito,Katsuhisa Kitaguchi,Hiroyuki Nishida,Masafumi Hashimoto 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This paper proposes a method for human behavior recognition by estimating the human state, i.e., position and orientation, using regression models. In the method, human silhouette in video images is detected by background sub traction technique, and the upper part of human silhouette is used for extracting the image feature. Linear regression technique is introduced to create a model that associates the image feature with human state. Human state estimation from the currently observed image is being performed through this model. Experiments are conducted on indoor space where an Omni Directional Vision(ODV) sensor is installed to the ceiling of crossing hall way. The feasibility and accuracy of our method is discussed through the experimental results.
Notes on East Asian Argument Ellipsis
Mamoru Saito 서울대학교 언어교육원 (구 서울대학교 어학연구소) 2007 語學硏究 Vol.43 No.2
This paper presents further supporting evidence for argument ellipsis in East Asian languages, and explores its theoretical consequences. It is demonstrated in the first part that argument ellipsis is attested in a wide range of phenomena. This discussion leads to the examination of the precise characteristics of argument ellipsis. Then, adopting Oku’s (1998) LF copying analysis, the paper shows that DP argument ellipsis is possible only in languages without obligatory agreement. Finally, it is suggested that the same LF copying mechanism is responsible for radical pro-drop. The paper, thus, relates three major properties of East Asian languages; argument ellipsis, radical pro-drop, and the absence of overt agreement.
Anti-Cancer Effects of Green Tea by Either Anti- or Pro-Oxidative Mechanisms
Hayakawa, Sumio,Saito, Kieko,Miyoshi, Noriyuki,Ohishi, Tomokazu,Oishi, Yumiko,Miyoshi, Mamoru,Nakamura, Yoriyuki Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.4
Tea derived from the leaves and buds of Camellia sinensis (Theaceae) is consumed worldwide. Green tea contains various components with specific health-promoting effects, and is believed to exert protective effects against diseases including cancer, diabetes and hepatitis, as well as obesity. Of the various tea components, the polyphenol catechins have been the subject of extensive investigation and among the catechins, (-)-epigallocatechin gallate has the strongest bioactivity in most cases. Our research group has postulated that hepatocyte nuclear factor-$4{\alpha}$, sterol regulatory element-binding proteins, and tumor necrosis factor-${\alpha}$ are targets of green tea constituents including (-)-epigallocatechin gallate for their anti-diabetes, anti-obesity, and anti-hepatitis effects, respectively. Published papers were reviewed to determine whether the observed changes in these factors can be correlated with anti-cancer effects of green tea. Two major action mechanisms of (-)-epigallocatechin gallate have been proposed; one associated with its anti-oxidative properties and the other with its pro-oxidative activity. When reactive oxygen species are assumed to be involved, our findings that (-)-epigallocatechin gallate downregulated hepatocyte nuclear factor-$4{\alpha}$, sterol regulatory element-binding proteins, and tumor necrosis factor-${\alpha}$ may explain the anti-cancer effect of green tea as well. However, further studies are required to elucidate which determinant directs (-)-epigallocatechin gallate action as an anti-oxidant or a pro-oxidant for favorable activity.
EMISSION LINE VELOCITY FIELD OF THE MAGELLANIC IRREGULAR GALAXY NGC 4449
SASAKI MINORU,OHTANI HIROSHI,SAITO MAMORU,OHTA KOUJI,YOSHIDA MICHITOSHI,SHIMIZU TASUHlRO,KOYANO HISASHI,KOSUGI GEORGE,AOKI KENTARO,SASAKI TOSHIYUKI The Korean Astronomical Society 1996 Journal of The Korean Astronomical Society Vol.29 No.suppl1
The imaging spectroscopic observations of the Magellanic irregular galaxy NGC 4449 were made to show the detailed kinematic structure of the galaxy. Many filamentary structures and Several bubble-like structures are recognized in a 3D data cube of H$\alpha$ emission line. Velocity field shows the kpc-scale mosaic structure and counter- rotation of ionized gas.
LEE, Jin-Ha,SAITO, Saori,MORI, Haruhide,NISHIMOTO, Mamoru,OKUYAMA, Masayuki,KIM, Doman,WONGCHAWALIT, Jintanart,KIMURA, Atsuo,CHIBA, Seiya Japan Society for Bioscience, Biotechnology, and A 2007 Bioscience, Biotechnology, and Biochemistry Vol.71 No.9
<P>cDNA encoding the bound type trehalase of the European honeybee was cloned. The cDNA (3,001 bp) contained the long 5′ untranslated region (UTR) of 869 bp, and the 3′ UTR of 251 bp including a poly(A) tail, and the open reading frame of 1,881 bp consisting of 626 amino acid residues. The <I>M</I><SUB>r</SUB> of the mature enzyme comprised of 591 amino acids, excluded a signal sequence of 35 amino acid residues, was 69,177. Six peptide sequences analyzed were all found in the deduced amino acid sequence. The amino acid sequence exhibited high identity with trehalases belonging to glycoside hydrolase family 37. A putative transmembrane region similar to trehalase-2 of the silkworm was found in the C-terminal amino acid sequence. Recombinant enzyme of the trehalase was expressed in the methylotrophic yeast <I>Pichia pastoris</I> as host, and displayed properties identical to those of the native enzyme except for higher sugar chain contents. This is the first report of heterologous expression of insect trehalase.</P>
A VARIATION IN THE PRESENT STAR FORMATION ACTIVITY OF SPIRAL GALAXIES
TOMITA AKIHIKO,TOMITA YOSHIO,SAITO MAMORU The Korean Astronomical Society 1996 Journal of The Korean Astronomical Society Vol.29 No.suppl1
We show that the star formation activity of spiral galaxies has a great variety. The star formation variation in a time scale of $10^8$ yr and the mechanism responsible for the variation are discussed.
REVIEW : Tacrolimus for the Treatment of Ulcerative Colitis
( Katsuyoshi Matsuoka ),( Eiko Saito ),( Toshimitsu Fujii ),( Kento Takenaka ),( Maiko Kimura ),( Masakazu Nagahori ),( Kazuo Ohtsuka ),( Mamoru Watanabe ) 대한장연구학회 2015 Intestinal Research Vol.13 No.3
Tacrolimus is a calcineurin inhibitor used for the treatment of corticosteroid-refractory ulcerative colitis (UC). Two randomized controlled trials and a number of retrospective studies have assessed the therapeutic effect of tacrolimus in UC patients. These studies showed that tacrolimus has excellent short-term efficacy in corticosteroid-refractory patients, with the rates of clinical response ranging from 61% to 96%. However, the long-term prognosis of patients treated with tacrolimus is disappointing, and almost 50% of patients eventually underwent colectomy in long-term follow-up. Tacrolimus can achieve mucosal healing in40-50% of patients, and this is associated with a favorable long-term prognosis. Anti-tumor necrosis factor (TNF)-α antibodies are another therapeutic option in corticosteroid-refractory patients. A prospective head-to-head comparative study of tacrolimus and infliximab is currently being performed to determine which treatment is more effective in corticosteroid-refractory patients. Several retrospective studies have demonstrated that switching between tacrolimus and anti-TNF-α antibody therapy was effective in patients who were refractory to one of the treatments. Most adverse events of tacrolimus are mild; however,opportunistic infections, especially pneumocystis pneumonia, are the most important adverse events, and these should be carefully considered during treatment. Several issues on tacrolimus treatment in UC patients remain unsolved (e.g., use of tacrolimus as remission maintenance therapy). Further controlled studies are needed to optimize the use of tacrolimus for the treatment of UC. (Intest Res 2015;13:219-226)
Rapid prediction of 1-year efficacy of tofacitinib for treating refractory ulcerative colitis
( Hiromichi Shimizu ),( Toshimitsu Fujii ),( Shuji Hibiya ),( Maiko Motobayashi ),( Kohei Suzuki ),( Kento Takenaka ),( Eiko Saito ),( Masakazu Nagahori ),( Kazuo Ohtsuka ),( Mamoru Watanabe ) 대한장연구학회 2021 Intestinal Research Vol.19 No.1