• 한국터널지하공간학회 논문집
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• 제21권2호
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• pp.211-225
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• 2019

최근 우리나라 전 지역에서 지진이 발생하고 이에 각 분야에서의 내진해석 연구가 활발히 진행되고 있고 지반을 고려하는 SSI 해석 연구 또한 지속적으로 수행되고 있다. 하지만 지반을 고려한 대부분의 기존 동적해석의 경우, 수치해석 방법에 따른 건물의 동적거동에 대한 비교 분석이 부족한 실정이다. 따라서 본 연구에서는 초고층 건물을 대상으로 유한요소 프로그램인 MIDAS GTS NX와 유한차분 프로그램인 FLAC 2D를 사용하여 동적해석을 수행하고, 결과를 비교 분석하고자하였다. 연구 결과, 건물 지상 및 지하부의 휨응력의 경우 최대 압축 및 인장 모두 MIDAS GTS NX가 FLAC 2D보다 다소 크게 발생하였지만, 최대 수평변위값 및 분포양상, 취약부의 위치는 유사하게 나타났다. 따라서 동적해석을 위해 사용자의 편의에 따라 유한요소법이나 유한차분법에 근거한 프로그램 중 어느 것을 사용해도 차이가 없음을 확인하였다.

• 수산해양교육연구
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• 제29권1호
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• pp.315-324
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• 2017

The purpose of this study is to help with education by applying the learning clinic program to the maladjusted children to improve the emotional stability and academic achievement. In order to find the components of the learning clinic program, we have classified self efficacy, learning motivation, anxiety, and academic stress as emotional factors and the results of Korean language, mathematics, sociology and science as academic achievement factors to examine the effects of the program. The results obtained in this study are followings. Firstly, there was significant difference in self efficacy and anxiety between boys and girls among emotional factors, and there was significant difference in math between boys and girls among academic achievement factors. Secondly, after applying the learning clinic program, significant difference is found in all factors such as self efficacy, learning motivation, anxiety and academic stress, and there was also a significant difference in Korean language, mathematics, sociology and science among academic achievement factors. In conclusion, the learning clinic program was helpful to maladjusted children by improving emotional stability and academic achievement.

• 한국산림과학회지
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• 제104권1호
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• pp.150-161
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• 2015

본 연구에서는 성인 대상별 산림치유 프로그램의 선호도를 분석함으로써 산림치유 프로그램의 효율적인 개발 및 운영을 위한 기초 자료를 얻고자 한다. 일반 성인 남 여 516명을 대상으로 산림치유 프로그램 37개에 관한 선호도 설문조사를 실시하였다. 자료분석은 SPSS 21.0 프로그램을 사용하여 각 프로그램의 기술통계분석 및 상관관계를 살펴본 결과 많은 공변량이 확인되어, 자료를 의미있게 축약하기 위해 요인분석을 실시하였으며, 신뢰도 분석, 빈도분석, T-검정, 분산분석을 통해 인구통계학적 특성(성별, 연령, 지역, 직업)에 따른 산림치유 프로그램 선호도의 차이를 살펴보았다. 37개의 산림치유 프로그램을 축약하기 위하여 베리멕스 직각회전법을 이용한 요인분석을 실시하였다. 이를 통해, 프로그램은 7개의 프로그램군(1: 심리치료중심 프로그램, 2: 강의 상담중심 프로그램, 3: 캠핑 산림욕중심 프로그램, 4군: 식이중심 프로그램, 5: 자연 식물중심 프로그램, 6: 명상중심 프로그램, 7: 호흡 요가중심 프로그램)과 7개의 독립프로그램(1: 숲속 잠자기, 2: 비전 퀘스트, 3: 물속에 손과 발 담그기 4: 신발 신고 숲속 걷기, 5: 숲 경관 보기, 6: 등산, 7: 숲속 운동회)으로 축약되었다. 이를 중심으로 성별, 연령, 지역, 직업에 따라 산림치유 프로그램 선호도의 차이를 검증하였다. 첫째, 성별에 따라서 심리치료중심 프로그램군, 식이중심 프로그램군, 명상중심 프로그램군, 호흡 요가중심 프로그램군, 등산 프로그램에 대해서 남 여 간에 유의한 차이가 있는 것으로 검증되었다. 둘째, 연령에 따라서 강의 상담중심 프로그램군, 캠핑 산림욕 중심 프로그램군, 자연 식물중심 프로그램군, 명상중심 프로그램군, 호흡 요가중심 프로그램군, 숲속 운동회 프로그램에 대하여 유의한 차이가 있는 것으로 나타났다. 셋째, 지역에 따라서 심리치료 중심 프로그램군, 강의 상담중심 프로그램군, 식이중심 프로그램군, 자연 식물중심 프로그램군, 명상중심 프로그램군, 비전 퀘스트, 등산, 숲속 운동회에 있어서 유의한 차이가 있는 것으로 나타났다. 넷째, 직업에 따라서 자연 식물중심 프로그램군, 명상중심 프로그램군, 비전 퀘스트, 신발 신고 숲속 걷기, 숲 경관 보기, 등산에 대하여 유의한 차이가 있는 것으로 나타났다. 이상에서 살펴본 바와 같이, 인구통계학적 특성에 따른 산림치유 프로그램의 선호도에 대한 다양성을 고려하여 산림치유 프로그램을 개발하여야 할 것으로 사료된다. 본 연구의 분석 결과가 성인을 대상으로 하는 산림치유 프로그램 개발을 위한 기초자료로 활용되기를 기대한다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2003년도 봄 학술발표회 논문집
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• pp.485-492
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• 2003

In this study, We peformed on the effective evaluation of slope berm construction using slope stability analysis programs. The effective evaluation of slope berm construction was performed by stability of slope and economy of construction. This time, used slope stability analysis programs are Talren97 that use Limit equilibrium method (LEM) and FLAC-SLOPE that use finite difference method (FDM), and carried out using Rocfall program to evaluate slope stability by rockfall occurrence.

• 대한치과교정학회지
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• 제52권6호
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• pp.420-431
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• 2022

Objective: This systematic review aimed to evaluate periodontal parameters in orthodontically tractioned teeth compared with the respective non-tractioned contralateral teeth. Methods: Search strategies were developed for six electronic databases and gray literature. Random-effects meta-analyses were performed for the outcomes of interest. Furthermore, the certainty of the evidence was assessed using the GRADE (Grading of Recommendations Assessment, Development, and Evaluation) tool. Results: Overall, 2,082 articles were identified, of which 24 were selected for the qualitative synthesis. A significant difference was observed between the impacted and contralateral teeth (mean difference [MD] = 0.25; 95% confidence interval [CI] = 0.10-0.40; I² = 0%) when the gingival index was evaluated. Additionally, impacted teeth showed a greater probing depth, with a significant mean difference between the groups (MD = 0.14; 95% CI = 0.07-0.20; I² = 6%). Most studies had a low risk of bias; however, the certainty of the evidence was very low owing to the design of existing studies. Conclusions: The evidence in the literature indicated that tractioned teeth might show worsening of periodontal parameters related to the gingival index and probing depth; however, the evidence remains uncertain about this outcome. Furthermore, probing depth should be considered regarding its clinical significance because of the small effect size observed.

• 한국응급구조학회지
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• 제15권2호
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• pp.15-26
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• 2011

Purpose: The purpose of this study was to develop and implement the educational program of Life Safety Support for parent. Methods: This study was used to develop children life safety support education program. The education program was utilized as multimedia, practice and discussions to increase understanding and effectiveness of learning. The data for this study was collected from June to December, 2010. There were two forms of evaluations, pretest and posttest with an intervention of education program. The analysis of the collected data was analyzed by descriptive analysis, t-test and paired t-test using the SPSS 10.0 program. Results: 1. the experimental group, who was given an education program before the test, got higher marks on the Life Safety support knowledge than the control group. There was a significant difference in knowledge between experimental group and control group(t=6.678, p=.000). 2. the experimental group got higher marks on the action evaluation than the control group. There was a significant difference in the certainty of action(t=8.546, p=.000) between experimental group and control group. Conclusion: This study examined how Life Safety support education program increased effectiveness in the knowledge and action of children Life Safety support.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2003년도 제20회 춘계학술대회 논문집
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• pp.110-114
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• 2003

본 연구에서는 GUI환경을 제공하는 SIMULINK를 이용한 터보제트 엔진의 성능모사 프로그램을 새로이 제안하였다. SIMULINK 성능모사 프로그램에 의한 성능해석 결과는 기개발된 FORTRAN 성능모사 프로그램의 결과와 비교하였다. 비교결과 SIMULINK 프로그램과 FORTRAN 프로그램에 의한 결과 사이에 다소 큰 차이를 보이는데 이는 구성품간 조합방법의 차이에 기인한 것으로 추정되며, 추후 개선을 할 예정이다.

• 대한지구과학교육학회지
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• 제6권2호
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• pp.136-144
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• 2013

The purpose of this study is to examine the effects of creative thinking activities and scientific attitude through the use of storytelling in the STEAM program for elementary students. For the purpose of this study, a teaching plan and worksheet for students using storytelling in STEAM was developed and applied. The results of this study are as follows: First, the change in students' creative thinking activities by applying the STEAM program using storytelling has statistically meaningful difference (p<.05). Second, the improvement in the scientific attitude score has statistically meaningful difference(p<.05). Third, according to the analysis of a questionnaire used to evaluate the program, students had a positive perception of the STEAM program and gained higher level of satisfaction about the lesson. Therefore, using storytelling STEAM program applied in this study might be useful to improve creative thinking activities, and can be expected to improve scientific attitude and should be widely applied to gifted education.

• 전기학회논문지
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• 제59권1호
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• pp.116-119
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• 2010

In this work, we presented the characterization of 3 dB branch type directional couplers by using High-Tc superconducting thin films. To do this, we deposited YBCO superconducting thin films on MgO substrates by using rf-magnetron sputtering techniques. The designed center frequency was 408 MHz and the designed passband was 20 MHz. Also we designed 3 dB Power difference and $90^{\circ}$ of phase difference between port 3 and port 4. The even and odd mode analysis were used to characterize our directional couplers and em Sonnet (full wave analysis program) was utilized to the optimum design. We reported experimental results, including a center frequency, passband, half power characteristics and phase differences. We confirmed that experimental results were in good agreements with characterization by using full wave analysis program.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2007년도 정기 학술대회 논문집
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• pp.771-776
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• 2007

Widespread propagation of failure can be triggered by localized damage to a structure because of fires, impact and explosion etc. In this paper, the progressive collapse analysis program is developed to automatically check the failed members and construct the modified structural model at each step. OpenSees, that is widely used in many research groups, was used for the developed progressive collapse analysis control program. The control program developed in this study automatically computes the damage indices of all the structural members and performance a progressive collapse analysis after the first failed member is selected. Using the developed program, we compared the progressive collapse behaviors of the example structures considering dynamic effects or not, and the difference of progressive collapse mechanism according to the modeling method of the failed members.