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Search Results: 1 - 10 of 257 matches for " Masanobu "
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Core and Networking in L2 Lexical Teaching in an Input-Poor Context  [PDF]
Masanobu Sato, Shigenori Tanaka
Open Journal of Modern Linguistics (OJML) , 2014, DOI: 10.4236/ojml.2014.45058
Abstract: This paper discusses problems in developing L2 lexical competence in an input-poor environment, and suggests what we can do so as to minimize the negative effects of those problems on L2 lexical learning. As an unavoidable problem, we discussed a learner strategy unequivocally used by Japanese students when learning the meaning of a new word. To enhance L2 lexical learning, we suggested that lexical core, combined with the notion of network building, has a lot of pedagogical potential. With two cases (the preposition on, and the basic verbs of communication), we demonstrated how the core schema of a lexical item(s) becomes a common thread that weaves both intra-lexical and inter-lexical networks.
First-Principle Analysis for Electromagnetic Eigen Modes in an Optical Metamaterial Slab
Masanobu Iwanaga
PIER , 2012, DOI: 10.2528/PIER12071202
Abstract: Electromagnetic (EM) eigen modes in a fishnet metamaterial (MM) slab have been comprehensively analyzed in an experimental configuration, based only on precise solutions of Maxwell equations. The EM eigen modes were directly detected from light-absorption peaks. Each mode was explicitly characterized by the dispersion diagram and EM field distributions. It was consequently found that the modes were classfied into either inner modes inside the slab or a mode at the interface with the surrounding media. The symmetric properties of the inner modes were clarified using group theory. The interface mode was found to come from surface plasmon polariton at flat metal/insulator interface. The present analysis procedure is generally applicable to MM slabs and enables to clarify the properties without models or assumptions, which have been usually used in MM studies.
A Concep o Vitalista da Salva o" no Brasil: As Novas Religi es Japonesas e o Pentecostalismo
Masanobu Yamada
REVER : Revista de Estudos da Religi?o , 2004,
Abstract: The Vitalistic Conception of Salvation has been pointed out as a distinctive character of Japanese new religions. It has not been discussed, however, how this conception would develop in a different cultural context. This article will investigate Brazilian converts to Japanese new religions (Seicho-no-ie, Perfect Liberty and Tenrikyo) and compare them with those to Pentecostalism (Charismatic Renewal Movement and Universal Church of Kingdom of God). Brazilians who converted to the Japanese new religions raise four points of the new religions as different from their former religions: a) novelty of ritual and pray; b) more kindness than Catholic Church; c) change of God’s image; d) liberation from sin. These points can be found in the cases of Pentecostalism as well, although they do not have the Vitalistic Conception of Salvation.
Tenrikyo in Brazil from the Perspective of Globalization
Masanobu Yamada
REVER : Revista de Estudos da Religi?o , 2010,
Abstract: This article analyzes from the perspective of “globalization” how the Japan-born Tenrikyo religion has contributed to the enrichment of Brazilian religious pluralism by becoming an option of religious markets there. Tenrikyo, emerged in 1838 and spread throughout Japan and abroad. It reached Brazil in 1929, but was primarily the religion of Japanese immigrants for a long time. Only from around 1990, when Brazil adopted liberal economic policy, did the number of non-Japanese followers begin to increase, many of whom interpreted Tenrikyo within the more familiar context of Christianity and Spiritualism. Accordingly, it may be supposed that globalization, as a result of the emergence and growth of a foreign religion, may help relativise and revitalize the context of local Brazil.
Photonic metamaterials: a new class of materials for manipulating light waves
Masanobu Iwanaga
Science and Technology of Advanced Materials , 2012,
Abstract: A decade of research on metamaterials (MMs) has yielded great progress in artificial electromagnetic materials in a wide frequency range from microwave to optical frequencies. This review outlines the achievements in photonic MMs that can efficiently manipulate light waves from near-ultraviolet to near-infrared in subwavelength dimensions. One of the key concepts of MMs is effective refractive index, realizing values that have not been obtained in ordinary solid materials. In addition to the high and low refractive indices, negative refractive indices have been reported in some photonic MMs. In anisotropic photonic MMs of high-contrast refractive indices, the polarization and phase of plane light waves were efficiently transformed in a well-designed manner, enabling remarkable miniaturization of linear optical devices such as polarizers, wave plates and circular dichroic devices. Another feature of photonic MMs is the possibility of unusual light propagation, paving the way for a new subfield of transfer optics. MM lenses having super-resolution and cloaking effects were introduced by exploiting novel light-propagating modes. Here, we present a new approach to describing photonic MMs definitely by resolving the electromagnetic eigenmodes. Two representative photonic MMs are addressed: the so-called fishnet MM slabs, which are known to have effective negative refractive index, and a three-dimensional MM based on a multilayer of a metal and an insulator. In these photonic MMs, we elucidate the underlying eigenmodes that induce unusual light propagations. Based on the progress of photonic MMs, the future potential and direction are discussed.
Effective optical constants in stratified metal-dielectric metameterial
Masanobu Iwanaga
Physics , 2007, DOI: 10.1364/OL.32.001314
Abstract: We present effective optical constants of stratified metal-dielectric metameterial. The effective constants are determined by two complex reflectivity method (TCRM). TCRM reveals full components of effective permittivity and permeability tensors and indicates the remarkable anisotropy of metallic and dielectric components below effective plasma frequency. On the other hand, above the plasma frequency, one of the effective refractive indexes takes a positive value less than unity and is associated with small loss. The photonic states are confirmed by the distribution of electromagnetic fields.
Photoacoustic wave propagating from normal into superconductive phases in Pb single crystals
Masanobu Iwanaga
Physics , 2005, DOI: 10.1103/PhysRevB.72.012509
Abstract: Photoacoustic (PA) wave has been examined in a superconductor of the first kind, Pb single crystal. The PA wave is induced by optical excitation of electronic state and propagates from normal into superconductive phases below T$_{\rm C}$. It is clearly shown by wavelet analysis that the measured PA wave includes two different components. The high-frequency component is MHz-ultrasonic and the relative low-frequency one is induced by thermal wave. The latter is observed in a similar manner irrespective of T$_{\rm C}$. On the other hand, the MHz-frequency component is obviously enhanced below T$_{\rm C}$. The behavior is reproduced by the change of attenuation of longitudinal ultrasonic wave and is consistent with BCS theory.
Diamagnetic nature of stratified thin metals in visible range
Masanobu Iwanaga
Physics , 2007,
Abstract: It is numerically demonstrated that effectively strong diamagnetic resonance emerges at visible frequencies in stratified metal-dielectric metamaterials. The effective optical constants are extracted by two-complex reflectivity method. It is clarified that the effective diamagnetic response originates from local diamagnetism at stratified thin metals. The effective diamagnetism is crucially sensitive to the sturucture of unitcell. The effective diamagnetic response is always associated with effective plasma frequency and is therefore regarded as a magnetic component of the collective excitation.
Photoacoustic detection of phase transitions at low temperatures in CsPbCl$_3$ crystals
Masanobu Iwanaga
Physics , 2003, DOI: 10.1080/01411590500114732
Abstract: Phase transitions in CsPbCl$_3$ crystals have been explored by photoacoustic (PA) method in a wide temperature range of 150--300 K. The PA signals, induced by ns-pulsed laser excitation of electronic states and detected with a piezoelectric transducer, are thermoelastic ultrasonic waves lasting for hundreds of microseconds. The wavelet analysis of the PA wave has clarified that the thermoelastic wave includes several MHz components. The PA signals have been made use of in order to examine phase transitions at low temperatures in the crystal. Changes of PA signals indicate that two phase transitions take place at low temperatures around 200 K. The types of phase transitions are discussed taking into recent experimatal results.
On the local factor of the zeta function of quadratic orders
Masanobu Kaneko
Mathematics , 2003,
Abstract: We prove by an elementary method the Riemann hypothesis for the local Euler factor of the zeta function of quadratic orders.
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