Kiyoshi Asakawa

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The authors compared levels of optimistic and pessimistic bias in the prediction of positive and negative life events between European Americans and Japanese. Study 1 showed that European Americans compared with Japanese were more likely to predict positive events to occur to self than to others. The opposite pattern emerged in the prediction of negative(More)
A culturally relevant framework was used to examine variations on optimistic and pessimistic bias in Westerners and Easterners. Study 1 showed that 136 European Americans compared with 159 Japanese were more likely to predict typical positive events to occur to self than to a sibling. The opposite pattern emerged in the prediction of typical negative(More)
One of the exciting features of photonic crystals is that light may travel at very low group velocities at specific optical frequencies. In photonic crystal waveguides, such low group velocities are also possible. We have studied the propagation of femtosecond pulses in these waveguides, with a phase-sensitive and time-resolved near-field microscope. With(More)
A culturally relevant framework was used to examine variations on optimistic and pessimistic bias in Westerners and Easterners. Study 1 showed that 136 European Americans compared with 159 Japanese were more likely to predict typical positive events to occur to self than to a sibling. The opposite pattern emerged in the prediction of typical negative(More)
BACKGROUND The psychological reactions to catastrophic events are not known well in children. PURPOSE The present study was performed to quantify the core features of post-traumatic stress reactions in schoolchildren after the Kobe earthquake. METHODS Children's psychological reactions to the Kobe earthquake were examined in a total of 8,800(More)
Group velocity, v g , dependence of propagation loss in single-line-defect photonic crystal waveguides on GaAs membranes, and minimum loss as low as 2.5 dB=mm, are presented. When v g is reduced by a factor of 7, an additional loss is found to be only 5 dB=mm, thus proving a feasible usage of low v g. Introduction: Two-dimensional (2D) photonic crystal (PC)(More)
SUMMARY This paper reviews our recent activities on nanophotonics based on a photonic crystal (PC)/quantum dot (QD)-combined structure for an all-optical device and a metal/semiconductor composite structure using surface plasmon (SP) and negative refractive index material (NIM). The former structure contributes to an ultrafast signal processing component by(More)