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Akiko Fukuda 범태평양 응용언어학회 2019 범태평양응용언어학회지 Vol.23 No.1
This paper aims to explore the characteristics of self-regulated learning from information gained in post-questionnaire interviews, with special emphasis on the differences between low-proficiency learners and high-proficiency learners. Self-regulated learning is a cyclical process to metacognitively, motivationally, and behaviorally boost learning performance (Zimmerman & Schunk, 2001). Fukuda (2018a) quantitatively revealed the motivational and cognitive differences of self-regulated learning skills between the low- and high-proficiency groups, showing that self-regulated learning significantly influenced language learning achievement, which is consistent with most other studies. However, those have not addressed less-proficient learners enough to understand how they perceive self-regulated learning. Seven low-proficiency learners and ten high-proficiency learners participated and were selected based on a questionnaire regarding self-regulated language learning. The researcher adapted semi-structured interviews based on the factors in the Motivated Strategies for Learning Questionnaire (MSLQ). The results showed the obvious characteristics that the less-proficient learners possessed. Interviews consistently revealed that the less-proficient learners had a peculiar self-regulated learning attitude that was different from the more-proficient learners. Because the less-proficient learners strongly emphasized the outcome of the exams or performance compared to others, they tended to rarely feel successful in their English education experience, which seemed to cause them to give up learning English and make them reluctant to ask teachers for help. These tendencies demonstrated the importance of teacher encouragement of learner motivational satisfaction and the promotion of the use of various metacognitive strategies.
(Hiroshi Fukuda),(Atsushi Wada) 한국복합재료학회 2002 Composites research Vol.15 No.1
N/A This paper reviews research activities of some mechanical test methods for advanced composites which have been conducted in Fukuda laboratory, Tokyo University of Science. The subjects are (1) innovation and development of compression bending test, (2) mechanical-property evaluation of soft-core sandwich beam, and (3) loop test to measure the strength of monofilaments. In the present paper, three subjects related to mechanical test method were reviewed. They are (1) innovation and development of compression bending test, (2) mechanical-property evaluation of soft-core sandwich beam, and (3) loop test to measure the strength of monofilamens and the followings are the summary. (1) Compression bending test and eccentric compression bending test was successfully applied to flat coupons and pipes made of CFRP. (2) Mechanical properties of CFRP/formed core sandwich beams were evaluated. Notable finding is that the shearing modulus of core strongly depends on the specimen configuration. (3) A loop test was tried to measure the strength of monofilaments used for advanced composites. Correlation between tensile test and loop test was also tried.
Fukuda, Masakazu,Takahashi, Shuji,Haramoto, Yoshikazu,Onuma, Yasuko,Kim, Yeon-Jin,Yeo, Chang-Yeol,Ishiura, Shoichi,Asashima, Makoto UPV/EHU Press 2010 The International journal of developmental biology Vol.54 No.1
<P>The T-box gene VegT plays a crucial role during mesendoderm specification of the amphibian embryo. While the function of maternal VegT (mVegT) has been extensively investigated, little is known about the function and transcriptional regulation of zygotic VegT (zVegT). In the present study, we used comparative genomics and a knockdown experiment to demonstrate that zVegT is the orthologous gene of zebrafish Spadetail/Tbx16 and chick Tbx6L/Tbx6, and has an essential role in paraxial mesodermal formation. zVegT knockdown embryos show several defects in the patterning of trunk mesoderm, such as abnormal segmentation of somites, a reduction in muscle, and the formation of an abnormal mass of cells at the tail tip. We also identified the cis-regulatory elements of zVegT that are necessary and sufficient for mesoderm-specific expression. These cis-regulatory elements are located in two separate upstream regions of zVegT, corresponding to the first intron of mVegT. The results of in vitro binding and functional assays indicate that Forkhead box H1 (FoxH1) and Eomesodermin (Eomes) are the trans-acting factors required for zVegT expression. Our results highlight the essential role of zVegT in organization of paraxial mesoderm, and reveal that zVegT is regulated by a coherent feedforward loop of Nodal signaling via Eomes.</P>
Fukuda, Takehito,Kosaka, Tatsuro,Osaka, Katsuhiko The Korean Society for Composite Materials 2001 Composites research Vol.14 No.6
This paper describes applications of cure monitoring techniques by using embedded fiber optic strain sensors, which are extrinsic Fabry-Perot interoferometric (EFPI) and/or fiber Bra99 grating (FBG) sensors, to three kinds of molding methods of autoclave, FW and RTM molding methods. In these applications, internal strain of high-temperature curing resin was monitored by EFPI sensors. From theme experimental results, it was shown that strain caused by thermal shrink at cooling stage could be measured well. In addition, several specific matters to these molding methods were considered. As thor an autoclave molding of unidirectional FRP laminates, it was confirmed that off-axis strain of unidirectional FRP could be monitored by EFPI sensors. As for FW molding using room-temperature (RT) cured resin, it was found that the strain outputs from EFPI sensors represented curing shrinkage as well as thermal strain and the convergence meant finish of cure reaction. It was also shown that this curing shrinkage should be evaluated with consideration on logarithmic change in stiffness of matrix resin. As for a RTM melding, both EFPI and FBC sensors were employed to measure strain. The results showed that FBG sensors hale also good potential for strain monitoring at cooling stage, while the non-uniform thermal residual strain of textile affected the FBG spectrum after molding. This study has proven that embedded fiber optic strain sensors hale practical ability of cure monitoring of FRP. However, development of automatic installation methods of sensors remains as a problem to be solved for applications to practical products.
ON THE GALERKIN-WAVELET METHOD FOR HIGHER ORDER DIFFERENTIAL EQUATIONS
Fukuda, Naohiro,Kinoshita, Tamotu,Kubo, Takayuki Korean Mathematical Society 2013 대한수학회보 Vol.50 No.3
The Galerkin method has been developed mainly for 2nd order differential equations. To get numerical solutions, there are some choices of Riesz bases for the approximation subspace $V_j{\subset}L^2$. In this paper we shall propose a uniform approach to find suitable Riesz bases for higher order differential equations. Especially for the beam equation (4-th order equation), we also report numerical results.