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1

Order estimation of japanese paragraphs by supervised machine learning and various textual features

Murata M., Ito S., Tokuhisa M., Ma Q.

Journal of Artificial Intelligence and Soft Computing Research

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2015

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Vol. 5, No. 4

247--255

EN

In this paper, we propose a method to estimate the order of paragraphs by supervised machine learning. We use a support vector machine (SVM) for supervised machine learning. The estimation of paragraph order is useful for sentence generation and sentence correction. The proposed method obtained a high accuracy (0.84) in the order estimation experiments of the first two paragraphs of an article. In addition, it obtained a higher accuracy than the baseline method in the experiments using two paragraphs of an article. We performed feature analysis and we found that adnominals, conjunctions, and dates were effective for the order estimation of the first two paragraphs, and the ratio of new words and the similarity between the preceding paragraphs and an estimated paragraph were effective for the order estimation of all pairs of paragraphs.

2

R&D of novel medicinal materials for curing cancer: sugar modified Gd-DTPA MRI contrast agents and phospha sugar anti-cancer agents

Yamashita Y., Yamashita M., Fujie M., Suyama K. A. T., Ito S., Reddy V. K., Yamada M., Ogawa K., Ozaki N., Nakamura S., Aoki T., Yu G., Aoshima K., Kato T., Kamikage N., Kiyofuji K., Takehara Y., Sakahara H., Takayanagi H., Oshikawa T., Laurent S., Burtea C., Van der Elst L., Muller R. N.

Journal of Automation Mobile Robotics and Intelligent Systems

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2009

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Vol. 3, No. 4

80-83

EN

Novel Sugar Dendritic Gd-DTPA Complexes for MRI Contrast Agents were prepared and evaluated by in vitro and in vivo methods. The sugar dendritic MRI contrast agents have a good blood vesse pool character, and draw blood vessels and liver cancer remarkably clearer than the clinically using Gd-DTPA. Phospha sugar derivatives or phosphorus heterocyclic derivatives provided by functional groups such as epoxide, bromide, etc., were prepared and evaluated by MTT in vitro method. These phospha sugar derivatives showed excellent activities against leukemia cells as well as solid cancer cells in fashions of (i) higher activity, (ii) wider spectra, (iii) higher selectivity and specificity distingushing healthy and cancer cells, etc., compared with the molecular targeting chemotheraputic anti-cancer agent, Gleevec.

3

Lateral extrusion of a cross fitting with a lost core

Ohashi T., Ito H., Shinozaki K., Ito S., Watari H.

Journal of Achievements in Materials and Manufacturing Engineering

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2007

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Vol. 24, nr 1

413-420

EN

Purpose: Lateral extrusion process with a lost core for cross fittings is suggested. At first, cavity of tube is filled up by low temperature melting alloy. Then low temperature melting material is solidified to be the "lost core". The third, the material is extruded for lateral direction to be a cross-fittings. After deformation, low temperature melting alloy is melted and removed. The authors discuss its deform mechanism in this paper. Design/methodology/approach: Experiments and numerical analysis with ANSYS9.0. Findings: Extrusion defect is caused at the center of the cross on the inner wall of the pipe because of volume constancy when the branch diameter close to the initial pipe diameter. In such the case, contact between pipe and die surface is unstable and the branch part is not stretched enough, then it causes wrinkles. In such the case, it is better to provide more pressure against the head of branch projection. Research limitations/implications: The effect of the relationship amongst mechanical properties of the pipe and lost core is to be examined in future. We must seek better material for the lost core that is cheaper, easier to remove, clean and safer for the man and environment. Practical implications: This methodology is suitable for production of the hollow products having constant sections for lateral direction. Originality/value: The above result helps the economical production of hollow products with simple equipments.

4

Analytical and experimental study on lateral extrusion of cross fittings with a lost core

Ohashi T., Ito H., Shinozaki K., Ito S., Watari H.

Journal of Achievements in Materials and Manufacturing Engineering

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2006

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Vol. 18, nr 1-2

399--402

EN

Purpose: The authors discuss deform mechanism of lateral extrusion process with a lost core for cross fittings. Outline of the is as follows: At first, cavity of pipe, or channel material, is filled up by liquid of low temperaturę melting material, for instances, low temperature melting alloy, ice (or water) and wax. Then low temperature melting material is solidified to be a soluble core of pipe. Authors call this soluble core the ‘lost core [1-4].’ The third, the material is compressed longitudinally as a composite billet, and extruded for lateral direction. After deformation, low temperature melting material is melted and removed. The authors think the process is suitable for production of cross-fittings because such the product has constant sections for lateral direction. Design/methodology/approach: The authors have examined the process with experiments [1] and numerical analysis with ANSYS9.0. Findings: The feature of the process is revealed. Extrusion defect is caused at the center of the cross on the inner wall of the pipe because of volume constancy when the branch diameter close to the initial pipe diameter. In such the case, contact between pipe and die surface is unstable and the branch part is not stretched enough, then it causes wrinkles. In such the case, it is better to provide more pressure against the head of branch projection. Research limitations/implications: In future work, the effect of the relationship amongst mechanical properties of the pipe and lost core is to be examined. In addition, the authors will seek better material for the lost core that is cheaper, easier to remove, clean and safer for the man and environment. Practical implications: Throughout the above research, authors conclude the suggested process is useful for making cross fittings, and the process can be useful on the other hollow products. Originality/value: The above result helps design of the economical process for fittings. The process requires only simple equipments.

5

512x512 element GeSi/Si heterojunction infrared focal plane array

Wada H., Nagashima M., Hayashi K., Nakanishi J., Kimata M., Kumada N., Ito S.

Opto-Electronics Review

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1999

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Vol. 7, No. 4

305-311

EN

We have developed a monolithic 512x512 element GeSi/Si heterojunction infrared focal plane array (FPA). The operation mechanism of the GeSi/Si heterojunction detector is the same as that of the PtSi/Si Schottky- barrier detector. We have fabricated the GeSi/Si heterojunction using molecular beam epitaxy (MBE) technology, and have confirmed that ideal strained GeSi films are grown on Si substrates. We have evaluated the dependencies of spectral responsivity on the Ge composition, impurity concentration and GeSi thickness, and have optimized them for 8-12 um infrared detection. The 512x512 element FPA has a pixel size of 34 x 34 um2 and a fill factor of 59%. A low noise equivalent temperature difference of 0.08 K ( f/2.0 ) was obtained with a 300 K background with a very small responsivity dispersion of 2.2%.