• International Journal of Advanced Culture Technology
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• v.9 no.4
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• pp.188-193
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• 2021

This is a group pretest-posttest design study that aim to evaluate the effect of self-reflection promotion program of nursing students. The subjects of this study were 42 first-year nursing students. The data was collected from October 5 to November 2, 2020. A questionnaire was used to measure self-reflection and self-efficacy. The self-reflection promotion program was operated for a total of 8 hours in 4 sessions over 4 weeks. Online lectures were conducted using books, movies, and art recommended by expert. The subjects could take lectures using their smartphones, laptops, desktops, and tablet PC. As a result of the study, self-reflection was significantly improved after intervention than before intervention (t=-2.594, p=.013). In the sub-items, self-exploration and self-understanding were statistically significantly improved (t=-2.527, p=.015; t=-2.471, p=.018). However, other-exploration and other-understanding were not statistically significant (t=-1.226, p=.227; t=-.758, p=.453). The self-efficacy of the subjects was not statistically significant (t=-.170, p=.866). In future research, it will be necessary to develop and verify specific teaching and learning methods utilizing various contents that can improve self-reflection for nursing students.

• Journal of the Korean Society of Clothing and Textiles
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• v.46 no.4
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• pp.600-612
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• 2022

This study analyzed the learning effect, through a satisfaction survey and NVivo qualitative analysis, of fashion design classes using humanities self-reflection writing. The results are as follows. First, with regard to learning satisfaction, learners perceived the class as efficient and showed overall satisfaction. Second, learners' opinions were classified into self-reflection writing, design process, new experience of expression, and the understanding of class activities. Third, in self-reflection writing, learners discovered their tendencies and values while exploring their identity through deep thinking. Fourth, in the design process, learners set the design concept consistently through writing. Fifth, in the new experience of expression, learners recognized the idea produced through writing as the result of thought and considered it a new expression method for design. Sixth, in the understanding of class activities, learners were interested in the process and considered it an activity through which to build their own style in design expression. Design class activities using self-reflection writing drew a positive response and presented the possibility of educational use. The teaching method of this study is expected to be used as a humanistic method for expressions in various design fields.

• ETRI Journal
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• v.21 no.3
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• pp.41-48
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• 1999

We have calculated differential reflection coefficient for isolated well structure of micro-scale, etched on dielectric surface. The differential reflection coefficient is computed using Green's second integral theorem. The purpose of our computation is to find a class of well profiles which give maximal diffusive scattering. To have such a maximal effect, we have concluded that the waist radius of Gaussian beam and its wavelength should be comparable to the well width and that well depth has to be larger than a wavelength. Exact calculation of differential reflection coefficients of dielectric surface with isolated structure on it may be used for the examination of dielectric surfaces and also in making simple but efficient diffuser.

• Proceedings of the IEEK Conference
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• 2000.06a
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• pp.271-274
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• 2000

In this paper, the distortion of an electrical pulse with rise/fall time resulting from dispersion and reflection as it propagates along a tapered microstrip line is investigated, and the delay time and distortion rate with respect to input and load impedances are analyzed on triangular and exponential tapered lines and analyzed the influence of the reflection and frequency dispersion on the distorted voltage wave in the tapered lines. The observed overshoot in front of the distorted wave is caused due to the frequency dispersion and the sustained tail of that comes from the reflection in the tapered line.

• Bulletin of the Korean Mathematical Society
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• v.35 no.2
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• pp.269-278
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• 1998

Let ($G,\;{\upsilon}$) be a bounded smooth domain and reflection vector field on $\partial$G, which points uniformly into G. Under the condition that locally for some coordinate system, ${\mid}{\upsilon^i}{\mid}\;i\;=\;1,{\cdot},{\cdot}$,d - 1, where is constant depending on the Lipschitz constant of G, we have tightness for reflected diffusion with jump on G with reflection $\upsilon$ depending only on c. From this, we obtain some properties of L-harmonic function where L is a sum of Laplacian and integro one.

• Proceedings of the Acoustical Society of Korea Conference
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• 1987.11a
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• pp.48-51
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• 1987

In this paper, acoustic reflection microscope system has been built for the purpose of detecting subsurface defects in materials and demonstrated for nondestructive testing application. 100 won coin, aluminuim, ceramics, and IC component employed as experimental samples and acoustic reflection microscope was operated in the focused and defocused mode at a frequency of operation of 3 MHz. It has been found that acoustic reflection icroscope has the resolution of 500 ${\mu}{\textrm}{m}$ and it has been an excellent tool for nondestructive testing.

• Proceedings of the Korean Geotechical Society Conference
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• 2000.09a
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• pp.35-38
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• 2000

Reflection cracks can be occurred in the asphalt layer overlaid on portland cement concrete pavements, because this layer is sensitive to environmental conditions including temperature changes and displacements of the pavement. A result of trial applications using glass fiber grids is introduced in this paper. Glass fiber grids were used between the asphalt layer and the concrete base to reduce the reflection crack of the asphalt layer. No cracks were observed in the glass grid installed area about 2 years later from trial constructions.

• Proceedings of the Korea Electromagnetic Engineering Society Conference
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• 2002.11a
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• pp.141-145
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• 2002

In this paper, we have implemented the reflection type band-rejection filter by employing the 3-㏈ hybrid and the frequency-selective loads. The frequency-selective loads have been achieved with the 3-pole bandpass filter terminated by a 50-ohm load. The reflection type band-rejection filter is less sensitive to unloaded Q-factor of resonator than the conventional one. Measurements and simulations on the presented band-rejection filter in this paper show the excellent performances in passband and rejection-band.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2003.06a
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• pp.276-279
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• 2003

The phase change upon reflection from target surfaces in white-light interferometer induces measurement errors when target surfaces are composed of dissimilar materials. We prove that this phase change on reflection considered of the polarization of the white-light causes the shift of both envelope peak position and fringe peak position of several tens of nanometer. In addition, we propose a new equation of white-light interference fringe pertinent to the polarization of source.

• Proceedings of the Optical Society of Korea Conference
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• 2007.07a
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• pp.21-22
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• 2007

The periodic multilayer is considered as the X-ray reflection mirror. High X-ray reflectivity from the incident angle greater than the grazing critical angle can be obtained by the periodic multilayer structure. The Optical constants are investigated in order to determine the material for X-ray reflection mirror. The X-ray reflection mirror is designed for W, Si using computer simulation. The reflectivity is calculated for various incident angles and ratio of thickness.