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Tokyo, Japan

Jinno T.,University of Kitakyushu | Mouri K.,NEXT Co | Okuda M.,University of Kitakyushu
Proceedings - International Conference on Image Processing, ICIP

In this paper we propose a new tone mapping method for the HDR video. Two types of gamma tone mapping are blended to preserve local contrasts in the entire range of luminance. Our method achieves a high quality tone mapping especially for HDR video that has a non-linear response to scene radiance. We examine the validity of our method through simulation and comparison with conventional work © 2010 IEEE. Source

Kamegai T.,NEXT Co
IEEJ Transactions on Electronics, Information and Systems

In Japan, HEMS and cooperation of smart meters has been discussed as a future. In this presentation explains various international standardization trend required for cooperation of HEMS and a smart meter. In addition, to compare the standardization. And HEMS considers the practical use method of the data obtained from a smart meter. © 2013 The Institute of Electrical Engineers of Japan. Source

Soejima T.,Food Ingredients and Technology Institute | Minami J.-I.,Food Ingredients and Technology Institute | Xiao J.-Z.,NEXT Co | Abe F.,Food Ingredients and Technology Institute
Biotechnology and Bioengineering

PCR cannot distinguish live microorganisms from dead ones. To circumvent this disadvantage, ethidium/propidium-monoazide (EMA/PMA) and psoralen to discriminate live from dead bacteria have been used for 2 decades. These methods require the use of numerous laborious procedures. We introduce an innovative method that uses platinum compounds, which are primarily used as catalysts in organic chemistry and partly used as anti-cancer drugs. Microorganisms are briefly exposed to platinum compounds in vivo, and these compounds penetrate dead (compromised) microorganisms but not live ones and are chelated by chromosomal DNA. The use of platinum compounds permits clear discrimination between live and dead microorganisms in water and milk (including Cronobacter sakazakii and Escherichia coli) via PCR compared with typically used PMA. This platinum-PCR method could enable the specific detection of viable coliforms in milk at a concentration of 5-10 CFU mL-1 specified by EU/USA regulations after a 4-h process. For sample components, environmental water contains lower levels of PCR inhibitors than milk does, and milk is similar to infant formula, skim milk and blood; thus, the use of the platinum-PCR method could also prevent food poisoning due to the presence of C. sakazakii in dairy products. This method could provide outstanding rapidity for use in environmental/food/clinical tests. Platinum-PCR could also be a substitute for the typical culture-based methods currently used. © 2015 Wiley Periodicals, Inc. Source

Hideki T.,NEXT Co
Lecture Notes in Electrical Engineering

Making vehicles lighter leads to improved fuel efficiency and fuel savings. Impact absorbers play an important role in improving car safety, and improving their performance while reducing their weight will help lower the risk of accidents and support the environmental goal of reduced fuel usage. Polypropylene is used to make impact absorbers, since it is a lightweight and recyclable material. By processing polypropylene into an optimal form, it can be designed to undergo compression buckling when an impact is applied. The impact energy that a material can absorb corresponds to the integral value of the buckling load and displacement when plastic compression buckling arises in the absorber. Consequently, causing more compression buckling can increase the amount of impact absorption. This study considers the optimal form of an absorber to maximize the amount of impact absorption. A crash analysis was performed via computer simulation that compared the amount of impact absorption of a cylindrical shell and polygonal tube. A comparison between the polygonal tube and a pyramidshaped absorber was also performed. The analysis found that polygonal tubes are superior to cylindrical shells in impact absorption performance. This is because decreasing the width of the planar sections and increasing the number of ridgelines will improve the compression buckling of the impact absorber. It was also found that pyramid-shaped designs are superior to polygonal tubes as impact absorbers. This is because the cross-sectional areas become smaller near the apex, and the pyramid shape gives rise to regular compression buckling from near the apex. Based on these results a new form of impact absorber is proposed that attaches concavo-convex projections on the side of a pyramid shape. These results suggest that by processing into an optimal form to absorb the shock, lightweight polypropylene can provide sufficient amounts of impact absorption. © Springer-Verlag 2013. Source

Park H.-I.,Hanyang University | Sohn M.,Hanyang University | Choi J.-H.,Korea Electrotechnology Research Institute | Park C.,NEXT Co | And 2 more authors.
Electrochimica Acta

Melt-spun Si based alloy materials have gained much attention as high capacity anode materials for lithium-ion batteries because of their high capacity and relatively low production cost. However, their long-term cycle performance should be further improved for the commercial success. Herein, it is demonstrated that the electrochemical performances of Si/TiFeSi2 active-inactive nanocomposite anode material could be further improved by the microstructural modification using its mechanical deformation. With the help of high-energy mechanical milling, the microstructural tuned Si/TiFeSi2 nanocomposite material showed a reversible capacity of more than 1000 mAh g-1 with stable capacity retention up to 100 cycles. Ex situ X-ray diffraction analysis coupled with potentiostatic intermittent titration technique revealed that refining the sizes of the active Si and inactive TiFeSi2 limited the lithiation of Si phase to Li21Si8 and this suppressed lithiation led to less volume changes of the electrodes and the improvement of the mechanical integrity of Si/TiFeSi2 nanocomposite material. © 2016 Elsevier Ltd. Source

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