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Sensing System for Inner Temperature of Combustion Gas by Using Infrared CT
Tadashi Ito,Kinnosuke Masuda,Takeshi Nakazawa 제어로봇시스템학회 2008 제어로봇시스템학회 국제학술대회 논문집 Vol.2008 No.10
We have developed a reconstruction algorithm for non-contact measurement of temperature and absorption of combustion gas distributed in a flame. To get accurate temperature distribution of the combustion gas, the absorption of the gas must be known. We achieve this by obtaining the projections of thermal radiation from the flame and an external radiation source which is turned on and off while obtaining projections. We can reconstruct the distribution from the projections by using an emission computed tomography (CT) algorithm. We have developed a prototype measurement system and made some experiments to measure temperature and absorption distribution of methane-air flame of a Bunsen burner.
Reconstruction of face image from security camera based on a measurement of space variant PSF
Tadashi Ito,HitoshiHoshino,YusakuFujii,NaoyaOhta 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
Images recorded by security camera are often severely degraded due to dirty lens or secular distortion of the recording system. To restore these images, the fully determination of space variant point spread function(PSF) is required. To measure PSF, we have proposed a method using a liquid crystal display, and shown some experimental results to restore the images by a CCD camera with intentionally distorted optics. The previous results, however, were not satisfactory due to the measurement error and noise contained in the measured PSF. In this paper, we propose a new method using M-array patterns for reduction of the measurement error and noise in PSF, and show improved results of restoration.
The smile curve: Evolving sources of value added in manufacturing
( Ito Tadashi ),( Richard E Baldwin ),( Hitoshi Sato ) 한국국제경제학회 2015 한국국제경제학회 동계학술대회 Vol.2015 No.-
The geographical fragmentation of production processes is accompanied by the displacement of value added from high-technology-high-wage nations to low-technology-Iow-wage nations. However, developing nations are worried that they are getting the wrong sorts of jobs. This concern is often organised around an intellectual concept, the so-called ``smile curve``, which asserts that the share of value added in manufactured products is shifting from the fabrication stages to preand post-fabrication services. The general assertion held among developing nation policy makers is that this distribution is moving against fabrication stages, and thus they are getting the ``bad`` jobs, i.e. jobs associated with low value added per worker, while the ``good`` jobs stay in the North. The goal of this paper is to shed light on how important the smile-curve notion is at economy level, in order to obtain some answers to the above-mentioned economy-wide policy issues/concerns. Using JETRO-IDE``s Asian Input-Output table, we find evidence of the ``smile curve``. Namely, for almost all exporting sectors/nations the value-added input share has drastically shifted from manufacturing to service inputs. We also find that the share of service input coming from rich nations and China has risen substantially in the exports of the developing countries, a supportive evidence for the developing countries`` concern.
Ito, Atsushi,Kaneko, Tadashi,Miyamoto, Yuka,Ishii, Keiichiro,Fujita, Hitoshi,Hayashi, Tomonori,Sasaki, Masako Korean Society of Photoscience 2002 Journal of Photosciences Vol.9 No.2
A new concept of "photo" -antisense method has been evaluated, where the inhibition of gene expression by the conventional antisense method is enhanced by photochemical binding between antisense oligonucleotides conjugated with photo-reactive compound and target mRNA or DNA. Fluorescein labeled oligodeoxyribonucleotides (F-DNA) was delivered to cell nuclei in the encapsulated form in multilamellar lecithin liposomes with neutral charge. F-DNA was previously shown to photo-bind to the complementary stranded DNA, and the delivery system using neutral liposome to be effective in normal human keratinocytes. In the present study, we used human kidney cancer G401.2/6TG.1 cell line to be advantageous in reproducible experiments. p53 was adopted as a target gene since antisense sequence information has been accumulated. The nuclear localization ofF-DNA was identified by comparing the fluorescence ofF-DNA with that of Hoechst 33258 under fluorescence microscope. After 7hr incubation to accumulate p53 protein induced by UV -B, p53 protein was quantified by Western blot. After 2hrs from F-DNA application, about 30% of cell population incorporated F-DNA in their nuclei with some morphological change possibly due to liposomal toxicity. Irradiation of visible light longer than 400nm from solar simulator at this time enhanced the inhibitory action of antisense F-DNA. The present results suggest that photo-antisense method is promising to control gene expression in time and space dependent manner. Further improvement of F-DNA delivery to cancer cells in the stability and toxicity is in progress. progress.
Quality Competition Versus Price Competition Goods: An Empirical Classification
( Richard E. Baldwin ),( Tadashi Ito ) 세종대학교 경제통합연구소(구 세종대학교 국제경제연구소) 2011 Journal of Economic Integration Vol.26 No.1
Based on theoretical distinctions suggested by the heterogeneous firms trade model and the quality heterogeneous firms trade model, we classify exports at the HS 6-digit level as being characterised by either quality or price competition. We find a high proportions of quality-competition goods for the major EU countries and lower proportions for Canada, Australia and China. However, the overlap of these quality-competition goods is not large which suggests that the HS-6 digit data is too aggregate; firm-level data may be needed. Our findings suggest that dumping investigations must pay careful attention to the exact definition of products, and the study of technological gaps across nations by analysing composition of their export basket (Hausman, Huang and Rodrik 2007) should be interpreted with caution.