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Chemometric Amylose Modeling and Sample Selection for Global Calibration Using Artificial Neural Networks

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食品科学 2008年第8期29卷 118-124页

作者： SHIMIZU N OKADOME H wada D KIMURA T OHTSUBO K Graduate School of Life and Environmental Sciences University of Tsukuba Ibaraki 305-8572 Japan National Food Research Institute Incorporated Administrative Agency Ibaraki 305-8642 Japan Graduate School of Agriculture Hokkaido University Hokkaido 060-8589 Japan

Chemometric amylose modeling for global calibration,using whole grain near infrared transmittance spectra and sample selection,was used in an artificial neural network(ANN) ,to assess the global and local models generated,based on samples of newly bred Indica,Japonica and rice. Global sample sets had a wide range of sample variation for amylose content(0 to 25.9%) . The local sample set,Japonica sample,had relatively low amylose content and a narrow sample variation(amylose;12.3% to 21.0%) . For sample selection the CENTER algorithm was applied to generate calibration,validation and stop sample sets. Spectral preprocessing was found to reduce the optimum number of partial least squares(PLS) components for amylose content and thus enhance the robustness of the local calibration. The best model was found to be an ANN global calibration with spectral preprocessing;the next was a PLS global calibration using standard spectra. These results pose the question whether an ANN algorithm with spectral preprocessing could be developed for global and local calibration models or whether PLS without spectral preprocessing should be developed for global calibration models. We suggest that global calibration models incorporating an ANN may be used as a universal calibration model.

关键词：直链淀粉人工神经网络分析方法食品标准

RESEARCH ON THE ESTIMATE OF SAFETY AND TOXICITY OF P-NITROPHENOL SODIUM WITHA PHYSIOLOGICALLY BASED PHARMACOKINETICS MODEL

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Chinese Medical Sciences Journal 1997年第1期12卷 32-36页

作者：高强 N.Kurihara H.Yanagisawa O.wada Department of Hygiene and Preventive Medicine Faculty of Medicine University of Tokyo.

The safety and toxicity of chemicals given first to animals and finally to humans are generally estimated with a method of safe coefficient, which is scientifically a way lack of grounds. To make a change of the old method, we designed a Physiologically Based Pharmacokinetics Medel for the estimate of safety and toxicity of chemicais. As an example,p-nitrophenol sodium (PNP-Na) is used in the research work. Studies of the PNP-Na pharmacokinetics in bodies of rat as well as humans are made, and possibilities of making use of the Model in the estimate of safety and toxicity of chemicals are discussed.

关键词： physiologically based pharmacokinetics model (PBPK ) p-nitrophenol sodium (PNP-Na) estimation of safety of chemical

Parallel-core-type polarization rotator for silicon wire waveguide platform

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Photonics Research 2014年第3期2卷 S0014-S0018页

作者： Hiroshi Fukuda Kazumi wada The University of Tokyo School of Material Engineering7-3-1 HongoChiyodaTokyoJapan NTT Microsystem Integration LaboratoriesMorinosato-WakamiyaAtsugiKanagawaJapan

We describe a polarization rotator based on a parallel-core structure consisting of a silicon nanowire waveguide and a silicon-nitride *** 60-μm-long rotator provides a polarization extinction ratio of more than 10 dB with excess loss of less than 1 *** addition,the extremely wide bandwidth of more than 150 nm expected from calculations is confirmed in experiments.A study of the fabrication tolerance of our rotator indicates that fabrication error of around 25 nm is allowable.

关键词： polarization extinction fir

Inhomogeneous dealloying kinetics along grain boundaries during liquid metal dealloying

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Journal of Materials Science & Technology 2022年第11期106卷 41-48页

作者： S.-H.Joo Y.B.Jeong T.wada I.V.Okulov H.Kato Department of Materials Science and Engineering Dankook University119 Dandae-roCheonan 31116Korea Institute for Materials Research Tohoku UniversityKatahira 2-1-1Sendai 980-8577Japan Institute of Natural Sciences and Mathematics Ural Federal University620000 EkaterinburgRussia Faculty of Production Engineering University of BremenBadgasteiner Str.128359 BremenGermany Leibniz Institute for Materials Engineering-IWT Badgasteiner Str.328359 BremenGermany

In this study, the inhomogeneous dealloying phenomenon during the liquid metal dealloying(LMD) was investigated using FeNi+Mg and(FeCo)Ni+Mg systems. For the FeNi+Mg system, the inhomogeneous dealloying and wetting of Mg melt occurred along triple junction(TJ) and grain boundary(GB).Temperature increase enhances the inhomogeneous dealloying kinetics and leads to the formation of the plate-shaped abnormal ligaments at the GB region. The energy banlance between a GB energy(γGB)and solid-liquid interface energies(γsl) is the key factor governing the inhomogeneous dealloying and wetting. Particularly, the low-energy twin boundaries were unaffected by the inhomogeneous ***, precursor microstructure is an important factor determining the final morphology of dealloyed material as well as its physical properties. In the case of the(FeCo)Niprecursor, all TJ and GB were stable against the preferred penetration of Mg melt from 600 ℃ to 800 ℃. It was concluded that a minor addition of alloying elements(VorCr) changes GB characteristics as well as γslof the precursor ***, this significantly influences dealloying mechanisms and final morphology of the dealloyed material. The current findings demonstrate the importance of GB engineering in the precursor materials for the technological application of liquid metal dealloying for the synthesis of advanced structural and functional materials.

关键词： Liquid metal dealloying Inhomogeneous dealloying Dealloying mechanism Abnormal ligament Porous material

Improvement of a Real Gas-Sensor for the Origin of Methane Selectivity Degradation by l-XAFS Investigation

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Nano-Micro Letters 2015年第3期7卷 255-260页

作者： Takahiro wada Naoyoshi Murata Takuya Suzuki Hiromitsu Uehara Hiroaki Nitani Yasuhiro Niwa Motohiro Uo Kiyotaka Asakura Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Corporate R&D Headquarters Fuji Electric Co. Ltd Catalysis Research Center Hokkaido University Photon Factory Institute of Materials Structure Science

We have directly investigated the chemical state of the Pd species in a real l-gas sensor device by examining the l-fluorescence X-ray absorption fine structure. The l-gas sensor device was heavily damaged by a heating process in which the temperature was ill-controlled, resulting in decrease of methane selectivity. We found that the Pd O in the fresh l-gas sensor was reduced to Pd metal particles as the methane selectivity decreased. Based on the investigation results, we modified the device structure so as to heat up homogeneously. The lifetime of the sensor was then successfully increased by more than 5 years.

关键词： Micro gas sensor Micro-XAFS Pd/Al2O3 Deactivation

A DFT Method for Single-Control Testability of RTL Data Paths for BIST

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湖南大学学报（自然科学版） 2000年第S2期27卷 52-60页

作者： Toshimitsu Masuzawa Minoru lzutsu Hiroki wada Hideo Fujiwara Graduate School of information Science Nara institute of Science and Technology 8916-5 Takayama IkomaNara630-0101Japan

This paper presents a new BIST method for RTL data paths based on single-control testability, a new concept of testability. The BIST method adopts hierarchical test. Test pattern generators are placed only on primary inputs and test patterns are propagated to and fed into each module. Test responses are similarly propagated to response analyzers placed only on primary outputs. For the propagation of test patterns and test responses paths existing in the data path are utilized. The DFT method for the single-control testability is also proposed. The advantages of the proposed method are high fault coverage (for single Stuck-at faults), low hardware overhead and capability of at-speed test. Moreover, test patterns generated by test pattern generators can be fed into each module at consecutive system clocks, and thus, the BIST can also detect some faults of other fault models (e.g., transition faults and delay faults) that require consecutive application of test patterns at speed of system clock.

关键词： built-in self-test design for testability RTL data path hierarchical test

A Non-scan DFT Method at RTL Based on Fixed-control Testability to Achieve 100%Fault Efficiency

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湖南大学学报（自然科学版） 2000年第S2期27卷 61-77页

作者： Satoshi Ohtake Shintaro Nagai Hiroki wada Hideo Fujiwara Graduate School of Information Science Nara Institute of Science and Technology 8916-5TakayamaIkomaNara 630-0101Japan

This paper proposes a non-scan design-for-testability method for register-transfer level circuits where a circuit consists of a controller and a data path. It achieves complete fault efficiency with low hardware overh... 详细信息

关键词： Non-Scan Testable Design RTL Circuit

Novel Fused Taper 1x4 Star Coupler for Full-Band Operation

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光学学报 2003年第S1期23卷 119-120页

作者： Masakazu Ohashi Hideki Sasaki Ryoukichi Matsumoto Daiichiro Tanaka Akira wada Optics and Electronics Laboratory Fujikura Ltd. 1440 Mutsuzaki Sakura Chiba 285-8550 JapanOptics and Electronics Laboratory Fujikura Ltd. 1440 Mutsuzaki Sakura Chiba 285-8550 JapanOptics and Electronics Laboratory Fujikura Ltd. 1440 Mutsuzaki Sakura Chiba 285-8550 JapanOptics and Electronics Laboratory Fujikura Ltd. 1440 Mutsuzaki Sakura Chiba 285-8550 JapanOptics and Electronics Laboratory Fujikura Ltd. 1440 Mutsuzaki Sakura Chiba 285-8550 Japan

A novel fused taper 1×4 coupler for full-band operation is proposed. Wavelength flattened characteristics and excellent branching uniformity less than 0.4 dB have been achieved in wavelength range from 1200 nm to 170... 详细信息

关键词： Star nm been 一弓 Novel Fused Taper 1x4 Star Coupler for Full-Band Operation in than high have Wave

Higher Performance Seismic Structures for Advanced Cities and Societies

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Engineering 2019年第2期5卷 184-189页

作者： Jiro Takagi Akira wada Graduate School of Urban Environmental Sciences Tokyo Metropolitan University Tokyo 192-0397 Japan Materials and Structures Laboratory Tokyo Institute of Technology Tokyo 226-8503 Japan

1. Introduction Tokyo, one of the largest cities in the world, is the capital of Japan, a heavily earthquake-prone country. The Japanese population and much of its functionality are highly concentrated in Tokyo. The estimated damage to Tokyo as a result of future large earthquakes with a magnitude greater than the Japanese scale 7 is extremely high. The number of casualties could exceed 20 000 due to both the shaking itself and post-earthquake fires.

关键词： Introduction Tokyo highly concentrated post-earthquake fires