Y. Wakabayashi

Publication List Details

Period

1996 - 2009

Number

41

Co-Authors

Status of Japanese gravitational wave detectors (2009)

Arai, K., Takahashi, R., Tatsumi, D., Izumi, K., Wakabayashi, Y., Ishizaki, H., ...

The Large-scale Cryogenic Gravitational wave Telescope (LCGT) is planned as a future Japanese project for gravitational wave detection. A 3 km interferometer will be built in an underground mine at...

Epitaxial-strain effect on charge/orbital order in Pr0.5Ca0.5MnO3 films (2009)

Okuyama, D., Nakamura, M., Wakabayashi, Y., Itoh, H., Kumai, R., Yamada, H., ...

Effect of growth orientation on charge- and orbital-ordering (CO-OO) phenomena has been studied for Pr0.5Ca0.5MnO3 epitaxial thin films fabricated on (LaAlO3)0.3-(SrAl0.5Ta0.5O3)0.7 (LSAT) substrates...

Size of Orbital Ordering Domain Controlled by the Itinerancy of the 3d Electrons in a Manganite Thin Film (2009)

Wakabayashi, Y., Sagayama, H., Arima, T., Nakamura, M., Ogimoto, Y., Kubo, Y., ...

An electronic effect on a macroscopic domain structure is found in a strongly correlated half-doped manganite film Nd$_{0.5}$Sr$_{0.5}$MnO3 grown on a (011) surface of SrTiO3. The sample has a...

Low-lying non-normal parity states in 8B measured by proton elastic scattering on 7Be (2008)

Yamaguchi, H., Wakabayashi, Y., Amadio, G., Fujikawa, H., Teranishi, T., Saito, A., ...

A new measurement of proton resonance scattering on 7Be was performed up to the center-of-mass energy of 6.7 MeV using the low-energy RI beam facility CRIB (CNS Radioactive Ion Beam separator) at the...

Three-dimensional Packing Problem: approximation algorithms and performance analysis (2007)

F.K. Miyazawa, Y. Wakabayashi

This is a short note on approximation results for the Three-dimensional Packing Problem. This problem consists in packing a list of rectangular boxes L = (b 1 ; b 2 ; : : : ; b n ) into a rectangular...

Parametric On-Line Packing (2007)

F. K. Miyazawa, Y. Wakabayashi

We present approximation algorithms for the following problems: the on-line strip packing, the on-line two-dimensional bin packing, the on-line three-dimensional packing problem and the on-line...

Orbital Ordering Structures in (Nd,Pr)0.5Sr0.5MnO3 Manganite Thin Films on Perovskite (011) Substrates (2007)

Wakabayashi, Y., Bizen, D., Kubo, Y., Nakao, H., Murakami, Y., Nakamura, M., ...

Structural study of orbital-ordered manganite thin films has been conducted using synchrotron radiation, and a ground state electronic phase diagram is made. The lattice parameters of four manganite...

Surface effects on the orbital order in the single layered manganite La0.5Sr1.5MnO4 (2007)

Wakabayashi, Y., Upton, M. H., Grenier, S., Hill, J. P., Nelson, C. S., ...

We report the first observation of `orbital truncation rods' -- the scattering arising from the termination of bulk orbital order at the surface of a crystal. The x-ray measurements, performed on a...

Novel Orbital Ordering induced by Anisotropic Stress in a Manganite Thin Film (2005)

Wakabayashi, Y., Bizen, D., Nakao, H., Murakami, Y., Nakamura, M., Ogimoto, Y., ...

We performed resonant and nonresonant x-ray diffraction studies of a Nd0.5Sr0.5MnO3 thin film that exhibits a clear first-order transition. Lattice parameters vary drastically at the metal-insulator...

d-f Coulomb and quadrupole-strain interactions in DyB2C2 observed by resonant x-ray scattering (2004)

Matsumura, T., Okuyama, D., Oumi, N., Hirota, K., Nakao, H., Murakami, Y., ...

Experimental evidence of the d-f Coulomb interaction responsible for the resonant x-ray scattering (RXS) from antiferroquadrupolar order in DyB2C2 is presented. The energy dependences of the RXS...

Relative contributions of lattice distortion and orbital ordering to resonant x-ray scattering in manganites (2004)

Nakamura, M., Izumi, M., Ogawa, N., Ohsumi, H., Wakabayashi, Y., Miyano, K.

We investigated the origin of the energy splitting observed in the resonant x-ray scattering (RXS) in manganites. Using thin film samples with controlled lattice parameters and orbital states at a...

Packing problems with orthogonal rotations (2004)

F. K. Miyazawa, Y. Wakabayashi

Abstract. In this extended abstract, we present approximation algorithms forthe following packing problems: the strip packing problem, the two-dimensional bin packing problem, the three-dimensional...

Parametric on-line algorithms for packing rectangles and boxes (2003)

F. K. Miyazawa, F. K. Miyazawa, Y. Wakabayashi, Y. Wakabayashi

O conteudo do presente relatorio e de unica responsabilidade do(s) autor(es).

Multidimensional Cube Packing (2002)

Y. Kohayakawa, F.K. Miyazawa, P. Raghavan, Y. Wakabayashi

We consider the d-dimensional cube packing problem (d-CPP): given a list L of d-dimensional cubes and (an unlimited quantity of) d-dimensional unit-capacity cubes, called bins, find a packing of L...

The "devil's staircase" type phase transition in NaV2O5 under high pressure (2001)

Ohwada, K., Fujii, Y., Takesue, N., Isobe, M., Ueda, Y., Nakao, H., ...

The "devil's staircase" type phase transition in the quarter-filled spin-ladder compound NaV2O5 has been discovered at low temperature and high pressure by synchrotron radiation x-ray diffraction. A...

A Resonant X-ray Scattering Study of Octahedral Tilt Ordering in LaMnO$_3$ and Pr$_{1-x}$Ca$_x$MnO$_3$ (2001)

Zimmermann, M. V., Nelson, C. S., Hill, J. P., Gibbs, Doon, Nakao, H., ...

We report an x-ray scattering study of octahedral tilt ordering in the manganite series Pr$_{1-x}$Ca$_x$MnO$_3$ with x=0.4 and 0.25 and in LaMnO$_3$. The sensitivity to tilt ordering is achieved by...

Multidimensional Cube Packing (2001)

F. K. Miyazawa, F. K. Miyazawa, Y. Wakabayashi, Y. Wakabayashi

O conteudo do presente relatorio e de unica responsabilidade do(s) autor(es).

Cube Packing (2001)

F.K. Miyazawa, Y. Wakabayashi

. The Cube Packing Problem (CPP) is dened as follows. Find a packing of a given list of (small) cubes into a minimum number of (larger) identical cubes. We show rst that the approach introduced by...

Multidimensional Cube Packing (2001)

Y. Kohayakawa, F. K. Miyazawa, P. Raghavan, Y. Wakabayashi

We consider the d-dimensional cube packing problem (d-CPP): given a list L of d-dimen-sional cubes and (an unlimited quantity of) d-dimensional unit-capacity cubes, called bins, find a packing of L...

Observation of the antiferroquadrupolar order in DyB2C2 by resonant x-ray scattering (2000)

Matsumura, T., Oumi, N., Hirota, K., Nakao, H., Murakami, Y., Wakabayashi, Y., ...

We have investigated the antiferroquadrupolar(AFQ) order in DyB$_2$C$_2$ by resonant x-ray scattering. X-rays with energies near the $L_3$ absorption edge of Dy were employed. Superlattice peaks that...

Approximation Algorithms For The Orthogonal (2000)

Oriented Packing Problem, F. K. Miyazawa, Y. Wakabayashi

. We present approximation algorithms for the orthogonal z-oriented three-dimensional packing problem (TPP z ) and analyse their asymptotic performance bound. This problem consists in packing a list...

Approximation algorithms for the orthogonal z-oriented 3-D packing problem (2000)

F. K. Miyazawa, Y. Wakabayashi

Abstract. We present approximation algorithms for the orthogonal z-oriented three-dimensional packing problem (TPP z) and analyze their asymptotic performance bound. This problem consists in packing...

Approximation algorithms for the orthogonal z-oriented 3-D packing problem (2000)

F. K. Miyazawa, Y. Wakabayashi

Abstract. We present approximation algorithms for the orthogonal z-oriented three-dimensional packing problem (TPP z) and analyze their asymptotic performance bound. This problem consists in packing...

Direct Observation of Antiferro-Quadrupolar Ordering - Resonant X-ray Scattering Study of DyB2C2 (1999)

Hirota, K., Oumi, N., Matsumura, T., Nakao, H., Wakabayashi, Y., Murakami, Y., ...

Antiferroquadrupolar (AFQ) ordering has been conjectured in several rare-earth compounds to explain their anomalous magnetic properties. No direct evidences for AFQ ordering, however, have been...

An Algorithm for the Three-Dimensional Packing Problem With Asymptotic Performance Analysis (1997)

F.K. Miyazawa, Y. Wakabayashi

The three-dimensional packing problem can be stated as follows. Given a list of boxes, each with a given length, width and height, the problem is to pack these boxes into a rectangular box of fixed...

An Algorithm for the Three-Dimensional Packing Problem With Asymptotic Performance Analysis (1997)

F. K. Miyazawa, Y. Wakabayashi

The three-dimensional packing problem can be stated as follows. Given a list of boxes, each with a given length, width and height, the problem is to pack these boxes into a rectangular box of fixed...

Rearrangement of DNA fragments: a branch-and-cut algorithm (1996)

C. E. Ferreira, Y. Wakabayashi, Estadual Campinas

In this paper we consider a problem that arises in the process of reconstruction of DNA fragments. We present a graph theoretical formulation of the problem and mention some extensions. We show this...

Rearrangement of DNA fragments: a branch-and-cut algorithm (1996)

C. E. Ferreira, Y. Wakabayashi, Estadual Campinas

We consider a problem that arises in the process of rearrangement of DNA fragments. We present a graph theoretical formulation of the problem and mention some extensions. We show this problem to be...

Inhibition of thiamine transport in Saccharomyces cerevisiae by thiamine disulfides.

Iwashima, A, Wakabayashi, Y, Nose, Y

Both thiamine disulfide and O-benzoyl thiamine disulfide, which are thiolfrom derivatives of thiamine, strongly inhibited thiamine transport in Saccharomyces cerevisiae. The inhibition appeared to be...

Inhibition of thiamine transport in Saccharomyces cerevisiae by thiamine disulfides.

Iwashima, A, Wakabayashi, Y, Nose, Y

Both thiamine disulfide and O-benzoyl thiamine disulfide, which are thiolfrom derivatives of thiamine, strongly inhibited thiamine transport in Saccharomyces cerevisiae. The inhibition appeared to be...

Hyperkalaemia induced by carbonic anhydrase inhibitor.

Wakabayashi, Y

An 81-year-old man developed hyperkalaemic and hyperchloraemic metabolic acidosis following treatment with a carbonic anhydrase inhibitor for his glaucoma. He had mild renal failure and selective...

Heat shock-enhanced T cell apoptosis with heat shock protein 70 on T cell surface in multicentric Castleman's disease

ISHIYAMA, T, KOIKE, M, AKIMOTO, Y, FUKUCHI, K, WATANABE, K, YOSHIDA, M, ...

We report here that T cells from patients with multicentric Castleman's disease (MCD) are sensitive to hyperthermia. T cells from two of three patients with MCD revealed DNA ladder formation and...

Algorithms for two-dimensional cutting stock and strip packing problems using dynamic programming and column generation

Cintra, G.F., Miyazawa, F.K., Wakabayashi, Y., Xavier, E.C.

We investigate several two-dimensional guillotine cutting stock problems and their variants in which orthogonal rotations are allowed. We first present two dynamic programming based algorithms for...

Approximation Algorithms For The Orthogonal Z-Oriented 3-D Packing Problem

F. K. Miyazawa, Y. Wakabayashi

We present approximation algorithms for the orthogonal z-oriented three-dimensional packing problem (TPP z ) and analyse their asymptotic performance bound. This problem consists in packing a list of...

Parametric On-Line Algorithms for Packing Rectangles and Boxes

F. K. Miyazawa, Y. Wakabayashi

We present approximation algorithms for the following problems: the two-dimensional bin packing (2BP), the three-dimensional packing problem (TPP) and the container packing problem (3BP). We consider...