Energy Current with Multi--body Interaction using Dirac Delta Function (2008)
Ito, Atsushi, Nakamura, Hiroaki
Energy density and energy flux was introduced along Takesue's method. Particle energies were localized at particle positions using Dirac delta function. The energy density was connected with the...
Molecular Dynamics Simulation of Plasma Surface Interaction (2007)
Ito, Atsushi, Nakamura, Hiroaki
New interlayer intermolecular potential model was proposed and it represented ``ABAB'' staking of graphite. Hydrogen atom sputtering on graphite surface was investigated using molecular dynamics...
Hydrogen Adsorption of Back Side of Graphene (2007)
Ito, Atsushi, Takayama, Arimichi, Nakamura, Hiroaki
We studied the interaction between a single hydrogen atom and a single graphene using classical molecular dynamics simulation with modified Brenner REBO potential. Three interactions, which are...
Molecular Dynamics Simulation of the Hydrogen Isotope Sputtering of Graphite (2007)
Ito, Atsushi, Nakamura, Hiroaki
We used a molecular dynamics simulation with the modified Brenner reactive empirical bond order potential to investigate the erosion of a graphite surface due to the incidence of hydrogen, deuterium,...
Quasi-bound states in continuum (2007)
Nakamura, Hiroaki, Hatano, Naomichi, Garmon, Sterling, Petrosky, Tomio
We report the prediction of quasi-bound states (resonant states with very long lifetimes) that occur in the eigenvalue continuum of propagating states for a wide region of parameter space. These...
Some properties of the resonant state in quantum mechanics and its computation (2007)
Hatano, Naomichi, Sasada, Keita, Nakamura, Hiroaki, Petrosky, Tomio
The resonant state of the open quantum system is studied from the viewpoint of the outgoing momentum flux. We show that the number of particles is conserved for a resonant state, if we use an...
Harmonic and equianharmonic equations in the Grothendieck-Teichmueller group, II (2007)
Nakamura, Hiroaki, Tsunogai, Hiroshi
In [LS], Lochak and Schneps introduced the ``harmonic parameter $g$'' of the Grothendieck-Teichm\"uller group $\GT$. We closely study the behavior of $g$ on the absolute Galois group $G_{\Bbb Q}$...
Chemical Reaction between Single Hydrogen Atom and Graphene (2007)
Ito, Atsushi, Nakamura, Hiroaki, Takayama, Arimichi
We study chemical reaction between a single hydrogen atom and a graphene, which is the elemental reaction between hydrogen and graphitic carbon materials. In the present work, classical molecular...
Non-Abelian gauge field theory of the spin-orbit interaction and a perfect spin filter (2007)
Hatano, Naomichi, Shirasaki, Ryoen, Nakamura, Hiroaki
We point out that the Rashba and Dresselhaus spin-orbit interactions in two dimensions can be regarded as a Yang-Mills non-Abelian gauge field. The physical field generated by the gauge field gives...
Gap-mediated magnetization of a pseudo-one-dimensional system with a spin-orbit interaction (2006)
Hatano, Naomichi, Shirasaki, Ryoen, Nakamura, Hiroaki
We argue that a pseudo-one-dimensional electron gas is magnetized when a voltage bias is applied with the Fermi level tuned to be in the energy gap generated by a spin-orbit interaction. The...
Lego theory of Galois-Teichmueller groups (in Japanese) (2006)
1. Introduction 2. P^1-{3pts} and Belyi theorem 3. Fundamental groupoid, tangential base points 4. Local fundamental group near maximally degenerate curve 5. Galois actions on Dehn twist generators
Some classical views on the parameters of the Grothendieck-Teichmüeller group (2006)
We present two new formulas concerning behaviors of the standard parameters of the Grothendieck-Teichmüller group GT , and discuss their relationships with classical mathematics. First,...
Microscopic Energy Current Field with Multi--body Force in Hamiltonian System (2006)
Ito, Atsushi, Nakamura, Hiroaki
Microscopic energy current can be derived from microscopic energy field localized only in particle positions. If the energy current is applied to classical molecular dynamics, it is expected to...
Molecular Dynamics Simulation of Sputtering Process of Hydrogen and Graphene Sheets (2006)
Nakamura, Hiroaki, Ito, Atsushi
To clarify the yielding mechanism of small hydrocarbon molecules in chemical sputtering between hydrogen and graphene sheets, we made classical molecular dynamics simulation with modified Brenner's...
Dependence of self-assembled amphiphile structure on interaction between hydrophilic groups (2006)
Nakamura, Hiroaki, Tamura, Yuichi
In a previous study (Comp. Phys. Com.(2005) Vol.169, 139-143), we clarified the dependence of the phase structure on the hydrophilicity of an amphiphilic molecule by varying the interaction potential...
Nakamura, Hiroaki, Tamura, Yuichi
In a previous study, dissipative particle dynamics simulation was used to qualitatively clarify the phase diagram of the amphiphilic molecule hexaethylene glycol dodecyl ether (C12E6). In the present...
Supramolecule Structure for Amphiphilic Molecule by Dissipative Particle Dynamics Simulation (2006)
Meso-scale simulation of structure formation for AB-dimers in solution W monomers was performed by dissipative particle dynamics (DPD) algorithm. As a simulation model, modified Jury Model was...
Relational Nouns as Anaphors (2005)
Nakamura, Hiroaki, Mori, Yoshiki
This paper examines the syntactic and semantic properties of a set of nouns recently called "Relational Nouns" like mother, neighbor, etc. Relational nouns denote relations between individuals,...
Relational Nouns as Anaphors (2005)
Nakamura, Hiroaki, Mori, Yoshiki
This paper examines the syntactic and semantic properties of a set of nouns recently called "Relational Nouns" like mother, neighbor, etc. Relational nouns denote relations between individuals,...
Relational Nouns as Anaphors (2005)
Nakamura, Hiroaki, Mori, Yoshiki
This paper examines the syntactic and semantic properties of a set of nouns recently called "Relational Nouns" like mother, neighbor, etc. Relational nouns denote relations between individuals,...
Nakamura, Hiroaki, Hatano, Naomichi, Shirasaki, Ryoen
We report our recent predictions on the quantum Nernst effect, a novel thermomagnetic effect in the quantum Hall regime. We assume that, when the chemical potential is located between a pair of...
Nakamura, Hiroaki, Hatano, Naomichi, Shirasaki, Ryoen
It is theoretically predicted that the Nernst coefficient is strongly suppressed and the thermal conductance is quantized in the quantum Hall regime of the two-dimensional electron gas. The Nernst...
Relational Nouns as Anaphors (2004)
Nakamura, Hiroaki, Mori, Yoshiki
This paper examines the syntactic and semantic properties of a set of nouns recently called "Relational Nouns" like mother, neighbor, etc. Relational nouns denote relations between individuals,...
Nakamura, Hiroaki, Sato, Tetsuya, Kambe, Hirotomo, Sawada, Keiji, Saiki, Toshiharu
The finite-difference time-domain method was employed to simulate light propagation in tapered near-field fiber probes with small metal aperture. By conducting large-volume simulations, including...
Rigidity of Orientationally Ordered Domains of Short Chain Molecules (2000)
Nakamura, Hiroaki, Fujiwara, Susumu, Sato, Tetsuya
By molecular dynamics simulation, discovered is a strange rigid-like nature for a hexagonally packed domain of short chain molecules. In spite of the non-bonded short-range interaction potential...
Chronic Skin Allograft Rejection in Terrestrial Slugs (1999)
Keiichiro Yamaguchi, Emiko Furuta, Hiroaki Nakamura
To know whether or not molluscs are capable of recognizing tissue alloantigens, dorsal skin-allografts were exchanged between adult terrestrial slug, Incilaria fruhstorferi. We succeeded for the...
Adaptive Framework for the REA Accounting Model (1999)
Hiroaki Nakamura, Ralph E. Johnson
. Business applications must be able to adapt to a changing business environment, to access large amount of data and to be efficient. A framework for business applications must also be reusable and...
American Journal of Mathematics - Volume 121, Number 2, April 1999
Physical Model of Nernst Element (1998)
Nakamura, Hiroaki, Ikeda, Kazuaki, Yamaguchi, Satarou
Generation of electric power by the Nernst effect is a new application of a semiconductor. A key point of this proposal is to find materials with a high thermomagnetic figure-of-merit, which are...
Peltier Current Lead Experiments with a Thermoelectric Semiconductor near 77 K (1997)
Yamaguchi, Satarou, Nakamura, Hiroaki, Ikeda, Kazuaki, Sakurai, Tokushi, Yoshida, Ikushi, Tanuma, Seiichi, ...
Peltier current lead was proposed to reduce heat leak from the current lead. The temperature of the hot side of semiconductors was kept to be room temperature and the liquid nitrogen was used to cool...
Transport Coefficients of InSb in a Strong Magnetic Field (1997)
Nakamura, Hiroaki, Ikeda, Kazuaki, Yamaguchi, Satarou
Improvement of a superconducting magnet system makes induction of a strong magnetic field easier. This fact gives us a possibility of energy conversion by the Nernst effect. As the first step to...
Ikeda, Kazuaki, Nakamura, Hiroaki, Yamaguchi, Satarou
On the measurement of thermoelectric power and Nernst coefficient, we used two kinds of shapes for a sample. One is "Bridge shape" and the other is, we call,"Fat-Bridge shape". The latter has 5 times...
Some IHX type relations on trivalent graphs and symplectic representation theory (1997)
Garoufalidis, Stavros, Nakamura, Hiroaki
We consider several algebras that arise in the study of the mapping class group (by means of topology and Hodge theory) and describe their symplectic-invariant parts in terms of algebras on trivalent...
Universal low-temperature properties of quantum and classical ferromagnetic chains (1996)
Takahashi, Minoru, Nakamura, Hiroaki, Sachdev, Subir
We identify the critical theory controlling the universal, low temperature, macroscopic properties of both quantum and classical ferromagnetic chains. The theory is the quantum mechanics of a single...
Nakamura, Hiroaki, Hatano, Naomichi, Takahashi, Minoru
The finite-size scaling function of the nonlinear susceptibility of the ferromagnetic Heisenberg chain is given explicitly. It is conjectured that the scaling function is universal for any values of...
Development of pharyngeal arch arteries in early mouse embryo
Hiruma, Tamiko, Nakajima, Yuji, Nakamura, Hiroaki
The formation and transformation of the pharyngeal arch arteries in the mouse embryo, from 8.5 to 13 days of gestation (DG), was observed using scanning electron microscopy of vascular casts and...
Origin and development of the pronephros in the chick embryo
Hiruma, Tamiko, Nakamura, Hiroaki
The process by which the pronephros develops was morphologically examined in chick embryos from Hamburger–Hamilton stage (ST) 8+ to ST34. The intermediate mesoderm, from which the pronephros...
Development of pharyngeal arch arteries in early mouse embryo
Hiruma, Tamiko, Nakajima, Yuji, Nakamura, Hiroaki
The formation and transformation of the pharyngeal arch arteries in the mouse embryo, from 8.5 to 13 days of gestation (DG), was observed using scanning electron microscopy of vascular casts and...
Origin and development of the pronephros in the chick embryo
Hiruma, Tamiko, Nakamura, Hiroaki
The process by which the pronephros develops was morphologically examined in chick embryos from Hamburger–Hamilton stage (ST) 8+ to ST34. The intermediate mesoderm, from which the pronephros...
Sakakura, Yasunori, Tsuruga, Eichi, Irie, Kazuharu, Hosokawa, Yoichiro, Nakamura, Hiroaki, Yajima, Toshiniko
We examined the immunolocalization of receptor activator of nuclear factor-κB ligand (RANKL) and osteoprotegerin (OPG) in areas of resorption caused by osteoclasts/chondroclasts on embryonic days...
Nakajima, Yuji, Miyazono, Kohei, Kato, Mitsuyasu, Takase, Masao, Yamagishi, Toshiyuki, Nakamura, Hiroaki
Transforming growth factor-β (TGFβ) is a dimeric peptide growth factor which regulates cellular differentiation and proliferation during development. Most cells secrete TGFβ as a large latent...