• 한국정보교육학회:학술대회논문집
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• 2006.08a
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• pp.135-141
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• 2006

프로그래밍 교육은 학습자 개인의 측면에서 논리적 사고력과 문제해결력 같은 고등인지기술을 향상시킬 수 있을 뿐만 아니라, 국가적인 측면에서 S/W개발 선진국으로 도약할 수 있는 교육적 기회를 제공한다는 점에서 중요한 의의를 가지고 있다. 본 연구는 교사들이 초등학교 학생들에게 프로그래밍 교육을 할 때에, 프로젝트를 기반으로 하여 적절한 프로그래밍 교육을 할 수 있는 학습 모형을 개발하고 실제 현장에서 적용하여 효과를 검증하는 데 연구의 목적이 있다. 즉 교육현장에서 초등학교 학생들에게 적용할 프로그래밍 교육에 대한 방법적인 모형을 제안하여 교육방법 개선에 기여하고자 한다.

• Journal of applied mathematics & informatics
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• v.39 no.3_4
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• pp.455-467
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• 2021

In this paper, we define twisted q-Euler polynomials of the second kind and explore some properties. We find generating function of twisted q-Euler polynomials of the second kind. Also, we investigate twisted q-Raabe's multiplication formula and (w, q)-alternating power sums of twisted q-Euler polynomials of the second kind. At the end, we define twisted q-Hurwitz's type Euler zeta function of the second kind.

• Journal of Life Science
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• v.19 no.8
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• pp.1093-1103
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• 2009

The purpose of this study was to analyze the effects of ballet program training at the Royal Academy of dance (RAD) on body composition (BC), physical fitness (PF) and bone mineral density (BMD) in college women. The subjects for this study were 14 females aged 19 to 22, who were divided into the Experimental group (n=7, EG) and the Control group (n=7, CG). The RAD ballet program training was done by 7 subjects (EG), 60 minutes per day, three times a week for 12 weeks. The TBF and %fat significantly decreased and LBM increased in the Experimental group, but all the variables of Body composition in the Control group did not significantly changed. The AMS, Sit ups, STF, SLJ CFB and 1,200 m R & W in the EG significantly increased, but 1,200 m R & W in the CG decreased. The lumbar vertebra (LV), femoral neck (FN), greater trochanter (GT) and ward's triangle (WT) did not significantly change in the EG, but LV, GT and WT in the CG decreased. There was no significant difference in osteopenia for EG, but there were increases in GT and WT for the CG. There was significant correlation between BMDs and body weight, TBF, LBM, %fat, BMI, AMS. There was significant correlation between LV and FN and LV and whole body. In conclusion, regular and continuous RAD training was effective in improving the body composition, physical fitness and bone mineral density. Consequently, RAD training will be effective for preventing osteopenia and osteoporosis, and for improving the health-related fitness for college and middle-aged women.

• Nonlinear Functional Analysis and Applications
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• v.26 no.1
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• pp.13-33
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• 2021

The aim of this paper is to establish common fixed point theorems under generalized (ψ - ϕ)-weak contractions in the setting of complete S-metric spaces and we support our result by some examples. Also an application of our results, we obtain some fixed point theorems of integral type. Our results extend Theorem 2.1 and 2.2 of Doric [5], Theorem 2.1 of Dutta and Choudhury [6], and many other several results from the existing literature.

• Current Optics and Photonics
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• v.7 no.6
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• pp.721-731
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• 2023

This paper studies various roughness parameters, besides waviness, texture, and nonlinear parameters of Bismarck brown Y (BBY)-doped Poly(methyl methacrylate) (PMMA) films based on the computed values of optical limiting (OL) threshold power and nonlinear refractive index. The films' morphology, grain size, and absorption spectra were investigated using atomic force microscopy in conjunction with ultraviolet-visible (UV-Vis) spectrophotometer. The particle size of the films ranged between 4.11-4.51 mm and polymer films showed good homogeneity and medium roughness, ranging from 1.11-4.58 mm. A polymer film's third-order nonlinear optical features were carried out using the Z-scan methodology. The measurements were obtained by a continuous wave produced from a solid-state laser with a 532 nm wavelength. According to the results, BBY has a nonlinear refractive index of 10^-6 cm²/W that is significantly negative and nonlinear. The optical limiting thresholds are roughly 10.29, 13.52, and 18.71 mW, respectively. The shift of nonlinear optical features with the film's concentration was found throughout the experiment Additionally, we found that the polymer samples have outstanding capabilities for restricting the amount of optical power that may be transmitted through them. We propose that these films have the potential to be used in a wide variety of optoelectronic applications, including optical photodetectors and optical switching.

• Bulletin of the Korean Chemical Society
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• v.14 no.1
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• pp.113-117
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• 1993

Good yield synthetic routes for the production of new B-alkyl-dithiaborane clusters are reported. The syntheses of the B-alkyl-dithiaboranes are based on the use of Fischer-type carbene reagents to activate the B-H bonds of dithiaborane for alkyl-addition reactions and are the first examples of transition-mediated reactions of dithiaborane to be reported. Thus, reactions employing arachno-$S_2B_7H_8$- and $(CO)_5M{C(R_1)R_2}$ (M = Cr, W; $R_1 = CH_3,\;C_6H_5;\; R_2 = OCH_3,\;SC_6H_5)$ were found to yield the intermidiate anions I, $[(CO)_5M{C(R_1)R_2S_2B_7H_8}]^-$, which upon protonation gave the corresponding neutral, air-sensitive cluster arachno-4-$RCH_2-6,8-S_2B_7H_8(R=CH_3,\;IIa;\;C_6H_5,\;IIb)$ range from 30 to 35% yield. Complexes IIa and IIb are isoelectronic with arachno-6,8-$S_2B_7H_9$ and, on the basis of the spectroscopic data, are proposed to adopt a similar arachno cage geometry in which an $RCH_2$ units are substituted to 4 position boron atom of the arachno-6,8-$S_2B_7H_9$.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.11
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• pp.3321-3330
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• 2009

This research was about influence on parenting by parent attachment. The subjects were W university students 223 of Jeon-buk province. The questionnaire included Inventory of Parent and Peer Attachment(IPPA) and parenting perception. Data were analyzed by Pearson's correlation and Stepwise. The findings were as follows: First, the relationship between parent(mother and father) attachment and parenting perception was found to a positive relationship. especially, communication and reliability of parent attachment. But between isolation of parent attachment and parenting perception was found to a negative relationship. Second, the parenting perception influenced by father's reliability among of parent attachment and the next was mother's communication.

• The Journal of Korean Institute for Practical Engineering Education
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• v.3 no.2
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• pp.1-10
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• 2011

The ultimate goal of architecture is to construct a building through design and supervision. According to this circumstance, architectural education divided into two part ; design and construction. However, these two processes have to be one program for better education. In this aspect, steel housing program could be a desirable one because of its structural(bearing wall) system and relative short construction schedule. In KUT architectural program, steel housing has been one of the most effective and important for about ten years. In this research, the contents(s/w) and running process of this program and practice lab(h/w) will be introduced with detail. And this study could be a good guideline for a better combination program with theory and practice in architectural engineering field.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.6
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• pp.26-37
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• 2019

Recently, standardization of installation progress and technology of site acceptance test(SAT) for energy storage system(ESS) are being required due to performance of ESS depending on working condition and environment even though the quality and safety of each component of ESS　is guaranteed. And also, it has been required to perform not only performance testing by H/W equipments but also performance verification by S/W tool, in order to more accurately and reliably validate the performance of the ESS in advanced countries. Therefore, this paper proposes evaluation algorithm for SAT to evaluate performance of ESS and presents modeling of SAT test equipment for ESS by using PSCAD/EMTDC. Furthermore, 30[kW] scaled portable test equipments is implemented based on the proposed algorithm and modeling. From the various simulation and test results, it is confirmed that performance of ESS related to characteristics of capacity and Round-trip efficiency, Duty-cycle efficiency, low voltage ride through(LVRT) and Anti-islanding can be accurately evaluated and that the simulation results of PSCAD/EMTDC are identical to test results of 30[kW] test equipment.

• 한국정보교육학회:학술대회논문집
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• 2010.01a
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• pp.181-185
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• 2010

본 연구는 시 청각 장애인의 정보격차 및 정보 불평등 문제를 해소하기 위해 장애인 정보화 교육의 문제점을 살펴보고 개선 방향을 제시함으로써 향후 장애인 정보화 교육이 보다 효율적으로 시행될 수 있도록 하는데 그 목적이 있다. 시 청각 장애인에게 정보 격차 해소를 위한 교육은 지속적으로 시행되고 있으나 정보화가 진행될수록 신체적 결함으로 인한 정보소외는 존재할 수밖에 없다. 이런 문제점을 극복하기 위해서는 첫째, 시 청각 장애인에게 정보화 교육 기회를 확대해야 한다. 둘째, 장애 특성을 고려하여 개별화 교육을 실현할 수 있도록 정보화 교육과정 및 교수법 개발을 개발해야 한다. 셋째, 교육과정의 정기적인 지도 점검이 요구된다. 넷째, 보조공학 기기 및 S/W에 대한 지원 및 개발을 강화해야 한다. 마지막으로 시 청각 장애인 정보화 교육 과정의 표준화 작업이 매우 시급한 실정이다.