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Shinjuku, Japan

Konishi K.,1 24 2 Nishi Shinjuku | Uruma K.,1 3 Kagurazaka | Takahashi T.,1 3 Kagurazaka | Furukawa T.,1 3 Kagurazaka
Signal Processing | Year: 2014

This paper proposes a new matrix shrinkage algorithm for matrix rank minimization problems. The proposed algorithm provides a low rank solution by estimating a matrix rank and shrinking non-dominant singular values iteratively. We study the convergence properties of the algorithm, which indicate that the algorithm gives approximate low-rank solutions. Numerical results show that the proposed algorithm works efficiently for hard problems with low computing time. © 2014 Elsevier B.V. Source

Imura Y.,1 3 Kagurazaka | Morita C.,1 3 Kagurazaka | Endo H.,1 3 Kagurazaka | Kondo T.,1 3 Kagurazaka | Kawai T.,1 3 Kagurazaka
Chemical Communications | Year: 2010

The reversible transfer of Au nanoparticles between water and chloroform phases by pH change was achieved by using a long-chain amine derivative. Further, we demonstrated that the phase transfer method was very effective for the fractionation of Au nanoparticles according to their crystal facet distinction. © 2010 The Royal Society of Chemistry. Source

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