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312 results on '"TAKESHI YAMAKAWA"'

301. Developmental changes in hepatic esterase activity towards chloramphenicol succinate and its Michaelis-Menten constant of liver, kidney and lung in human

Author

Shoju Onishi, Akihiko Hosoe, Takeshi Yamakawa, Kenichi Isobe, Susumu Itoh, and Yutaka Nishimura

Subjects
Adult, Male, medicine.medical_specialty, Aging, Gestational Age, Biology, Kidney, Michaelis–Menten kinetics, Esterase, Fetus, Pregnancy, Internal medicine, medicine, Humans, Pharmacology (medical), General Pharmacology, Toxicology and Pharmaceutics, Lung, chemistry.chemical_classification, Hydrolysis, Esterases, Infant, Newborn, Infant, Middle Aged, Kinetics, Enzyme, medicine.anatomical_structure, Endocrinology, Chloramphenicol, chemistry, Liver, Child, Preschool, Female, Chloramphenicol succinate
Abstract

The hepatic esterase activities towards chloramphenicol succinate were determined in the tissues from 45 human subjects, including 18 electively aborted fetuses, 5 premature and 8 full-term newborn babies, 8 infants and 6 adults. The enzyme activities in the tissues from the fetuses and neonates were significantly lower compared with those obtained from the infants and adults. This suggests that the activity showed postnatal development. Kinetic studies of the esterase activity revealed that hepatic Km values were similar to those of the lung, but renal Km values were about 3 times higher than those of the liver and lung. In each organ, no age-related changes in Km values were observed. However, all the Vmax values in each organ showed developmental increases. Therefore, the liver plays the most important role in hydrolysis of chloramphenicol succinate when the weight of the organ is taken into consideration.

Published
1984

302. Development of Monte Carlo modeling for proton induced charge in Si pin photodiode

Author

Takeshi Yamakawa, Jamie S. Laird, Shinobu Onoda, Takeshi Wakasa, Takeshi Okamoto, Tomihiro Kamiya, Yoshiharu Koizumi, and Toshio Hirao

Subjects
Physics, Nuclear and High Energy Physics, 3D optical data storage, Proton, Monte Carlo method, Nuclear data, Radiation, Computational physics, Photodiode, law.invention, Nuclear Energy and Engineering, Single event upset, law, Electronic engineering, Transient (oscillation), Electrical and Electronic Engineering
Abstract

High-energy protons induce Single Event Transient (SET) currents that trigger bit errors in optical data links used in radiation environments. Here, Monte Carlo modeling and the Evaluated Nuclear Data Format (ENDF) database library were combined to develop an approach for estimating proton induced SET currents in photodiodes. Modeling of the SET current distribution induced in a Si pin photodiode is compared to charge collection data measured in the laboratory. In this paper, we discuss the basic methodology of the approach and comment on any differences noted between theory and experiment.

304. Developmental changes in the concentrations of taurine, glycine and individual bile acids in human liver, estimated by high-pressure liquid chromatography

Author

Shoju Onishi, Takeshi Yamakawa, Kenichi Isobe, Masahiro Manabe, Susumu Itoh, Yutaka Nishimura, and Akihicho Hosoe

Subjects
Taurine, chemistry.chemical_compound, Biochemistry, Human liver, chemistry, business.industry, Pediatrics, Perinatology and Child Health, Glycine, Medicine, business, High-performance liquid chromatography
Published
1983

305. Applications of fuzzy logic control to industry

Author

Takeshi Yamakawa and Kaoru Hirota

Subjects
Fuzzy classification, Neuro-fuzzy, Logic, Fuzzy Control Language, business.industry, Fuzzy control system, Fuzzy electronics, Artificial Intelligence, Control system, Fuzzy set operations, Artificial intelligence, Combs method, business, computer, computer.programming_language, Mathematics
Published
1989

307. The Hemodynamics in the Venous System in the Neonatal Period—The Pressure Gradient in the Hepato-portal Region

Author

Yuichiro Okuda, Yutaka Nishimura, Yoshiki Hiratani, Takashi Shibata, Kunishige Yoshizawa, Takao Ozawa, Takeshi Yamakawa, Noboru Okada, Kazuo Koike, Tatumi Okamoto, and Tatuya Ishikawa

Subjects
medicine.medical_specialty, business.industry, Internal medicine, Period (gene), Pediatrics, Perinatology and Child Health, Cardiology, Medicine, Hemodynamics, business, Pressure gradient
Published
1970

309. Methodologies For The Conception, Design, And Application Of Intelligent Systems - Proceedings Of The 4th International Conference On Soft Computing (In 2 Volumes)

Author

Gen Matsumoto, Takeshi Yamakawa, Gen Matsumoto, and Takeshi Yamakawa

Subjects
Expert systems (Computer science), Soft computing--Congresses
Abstract

IIZUKA'96, the 4th International Conference on Soft Computing, emphasized the integration of the components of soft computing to promote the research work on post-digital computers and to realize the intelligent systems. At the conference, new developments and results in soft computing were introduced and discussed by researchers from academic, governmental, and industrial institutions.This volume presents the opening lectures by Prof. Lotfi A. Zadeh and Prof. Walter J. Freeman, the plenary lectures by seven eminent researchers, and about 200 carefully selected papers drawn from more than 20 countries. It documents current research and in-depth studies on the conception, design, and application of intelligent systems.

Published
1996

310. Methodologies For The Conception, Design And Application Of Soft Computing - Proceedings Of The 5th International Conference On Soft Computing And Information/intelligent Systems (In 2 Volumes)

Author

Gen Matsumoto, Takeshi Yamakawa, Gen Matsumoto, and Takeshi Yamakawa

Subjects
Expert systems (Computer science), Soft computing--Congresses
Abstract

Soft computing is the common name for a certain form of natural information processing that has its original form in biology, especially in the function of human brain. It is a discipline rooted in a group of technologies such as fuzzy logic, neural networks, chaos, genetic algorithms, probabilistic reasoning and learning algorithms. Today, soft computing has become an acknowledged concept; however, for a long time, such components of soft computing have been debated and individually developed.Since its beginning in 1990, the series of IIZUKA conferences has covered various kinds of technologies that constitute soft computing. This series has played a pioneering role in promoting the development of a symbiotic relationship between the various technologies of soft computing.At IIZUKA'98, the 5th International Conference on Soft Computing and Information/Intelligent Systems, new developments and results in this field were introduced and discussed by researchers from academic, governmental and industrial institutions around the world.This volume presents the opening lecture by Prof. Walter J Freeman, the keynote speech by Dr Gen Matsumoto, the plenary lectures by 5 eminent researchers and about 230 carefully selected papers drawn from more than 25 countries. It documents current research and in-depth studies on the fundamental aspects of soft computing and their practical applications.

Published
1998

311. Double SOM for long-term time series prediction

Author

Simon, Geoffroy, Lendasse, Amaury, Cottrell, Marie, Fort, Jean-Claude, Verleysen, Michel, MachineLearning Group - DICE (DICE), Université Catholique de Louvain = Catholic University of Louvain (UCL), Statistique Appliquée et MOdélisation Stochastique (SAMOS), Université Paris 1 Panthéon-Sorbonne (UP1), Modélisation Appliquée, Trajectoires Institutionnelles et Stratégies Socio-Économiques (MATISSE - UMR 8595), Université Paris 1 Panthéon-Sorbonne (UP1)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Statistique et Probabilités (LSP), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Takeshi Yamakawa, Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), and Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[MATH.MATH-ST]Mathematics [math]/Statistics [math.ST], Santa Fe, forecasting, self-organizing maps, electrical load, long-term prediction
Abstract

International audience; Many time series forecasting problems require the estimation of possibly inaccurate, but long¬term, trends, rather than accurate short-term prediction. In this paper, a double use of the Self-Organizing Map algorithm makes it possible to build a model for long¬term prediction, which is proven to be stable. The method uses the information on the structure of the series when available, by predicting blocs instead of scalar values. It is illustrated on real time series for both scalar and bloc predictions.

Published
2003

312. Pratical computing in fuzzy logic

Author

Dubois, Didier, Martin-Clouaire, Roger, Prade, Henri, Argumentation, Décision, Raisonnement, Incertitude et Apprentissage (IRIT-ADRIA), Institut de recherche en informatique de Toulouse (IRIT), Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Unité de Biométrie et Intelligence Artificielle de Toulouse [Castanet-Tolosan] (UBIA), Plateforme bioinformatique du GIS GENOTOUL - Génopole Toulouse Midi-Pyrénées-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Madam M. Gupta, and Takeshi Yamakawa

Subjects
Rule-based systems, Fuzzy logic, [SDV]Life Sciences [q-bio], Generalized modus ponens, ComputingMilieux_MISCELLANEOUS, [INFO.INFO-AI]Computer Science [cs]/Artificial Intelligence [cs.AI]
Abstract

International audience

Published
1988

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