• 한국환경과학회지
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• 제20권10호
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• pp.1213-1220
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• 2011

This study aims at choosing indicators to measure the effect of utilizing biotop map, and analyzing its effect by an indicator from the perspective of performer. The Primary performance indicators are made through specialist survey using SMART. As a result, three indicators are chosen: "Discussion of the period of an environmental effects evaluation(reduced effect)", "Plan and execution of environment and ecology plan in an urban development site", "Minimizing ecological damage in an urban development." The result in each indicator is as follows. The indicator of discussion of the period of an environmental effects evaluation(reduced effect), the average reduction rate in statistically meaningful level reduced 6.08% and 11.64% respectively in 2004-2005. In this period, environment information system was established and the reduction effect is shown in this period by reinforcing environment effect estimation using biotop map. As to the indicator of utilizing biotop map in an urban development site, the Seongnam P site case shows that biotop map was used when they set up an development plan. In case of minimizing ecological damage in an urban development, the Gwangjingu G-dong case shows that it was used to appoint preservation sit, and mediate development restrict area. Accordingly, the biotop map utilizing effect is confirmed through core performance indicators and verification of the indicators using SMART. The further research is encouraged to find evaluate indicators and verify the effect quantitatively to increase the use of biotop map.

• 디지털융복합연구
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• 제10권1호
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• pp.195-202
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• 2012

본 연구는 컨설팅사브랜드가 컨설팅전문성, 활용경험과 구전의도사이에서의 매개 역할을 하는 것을 검증하였다. 본 연구 결과 첫째, 컨설팅전문성과 활용경험이 구전의도에 정(+)의 영향을 미치는 것으로 나타났다. 둘째, 컨설팅사브랜드는 컨설팅 전문성, 활용경험이 구전의도 관계에서 매개역할에 정(+)의 영향을 미치는 것으로 나타났다. 이를 통해 구전의도는 우선적으로 컨설팅사브랜드 가치를 높여야 하며 이를 위한 컨설팅전문성과 활용경험의 중요성을 인식하고 컨설팅사브랜드를 통한 컨설팅전문성과 활용경험 가치를 높여야 한다는 것을 확인한 것은 시사하는 바가 크다고 할 수 있다.

• 수산해양교육연구
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• 제28권6호
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• pp.1529-1548
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• 2016

The objective of this study is to explore an effect of class teaching method of utilizing a pictogram on understanding of safety terms by the Hearing Impaired students. For this objective, a class teaching utilizing a pictogram was performed by targeting 4 students (elementary school 6th graders)with auditory disability for app. 3 months during the period from July, 2015 to September and through repeated measurement, an effect of class teaching utilizing pictogram on their understanding of safety terms was analyzed. The result of this study is as follows. First, class teaching utilizing pictogram was effective for enhancing understanding of safety terms. Second, such teaching was effective for promoting interest in safety terms. Through these results, it could be concluded that such teaching method provided an opportunity of enhancing understanding of the students with auditory disability for safety terms. In addition, the result of this study implies that pictogram teaching method being designed to deliver the meaning of target easily and promptly becomes a major factor of exerting a positive influence on understanding of safety terms by the students with auditory disability.

• 대한지구과학교육학회지
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• 제6권1호
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• pp.50-59
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• 2013

Prezi, which is an implemented software in the form of flash-based online presentation, is considered to be a new appropriate smart-learning tool. This study aimed to investigate an impact of project learning utilizing Prezi on the creativity, attitudes toward science and science process skills of scientific gifted children in elementary school. The results of this study were as follows; First, after project learning utilizing Prezi, their creativity was raised meaningfully, especially in sub-elements of patience, adaptability and variety of interestings. Second, project learning utilizing Prezi showed meaningful effect on their improvement of science process skill, especially in integrated science process skills. Third, project learning utilizing Prezi improved their attitudes toward science meaningfully. In almost sub-elements, except the element of ordinariness of scientist, positive meaningful improvements were showed.

• Structural Engineering and Mechanics
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• 제72권3호
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• pp.305-312
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• 2019

This paper investigates the effect of utilizing vacuum bagging process to enhance the bond behavior between fiber reinforced polymer (FRP) composites and concrete substrate. Sixty specimens were prepared and tested using double-shear bond test. The effect of various parameters such as vacuum, fiber type, and FRP sheet length and width on the bond strength were investigated. The experimental results revealed that utilizing vacuum leads to improve the bond behavior between FRP composites and concrete. Both the ultimate bond forces and the maximum displacements were enhanced when applying the vacuum which leads to reduction in the amount of FRP materials needed to achieve the required bond strength compared with the un-vacuumed specimens. The efficiency of the enhancement in bond behavior due to vacuum highly depends on the fiber type; using carbon fiber showed higher enhancement in the bond strength compared to the glass fiber when vacuum was applied. On the contrary, specimens with glass fiber showed higher enhancement in the maximum slippage compared to specimens with carbon fibers. Utilizing vacuum does not affect the debonding failure modes but lead to increase in the amount of attached concrete on the surface of the debonded FRP sheet.

• 한국물환경학회지
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• 제30권2호
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• pp.220-225
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• 2014

A sequencing batch reactor (SBR) was operated to obtain thiosulfate-utilizing denitrifier cultivated with two types of electron accepter (nitrate and nitrite). Using the microbial biomass obtained from the SBR, batch tests were conducted with different nitrite concentrations (50 and 100 mg-N/L) at pH 7.0, 7.5 and 7.9 to see how free nitrous acid (FNA) negatively works on the thiosulfate-utilizing denitrification of nitrate. The specific denitrification rate (SDR) of nitrate was significantly influenced by pH and FNA. The presence of nitrite caused a remarked decrease of the SDR under low pH conditions, because of the microbiological inhibitory effect of FNA. The minimum SDR was observed when initial nitrite concentration was 100 mg-N/L at pH 7.0. Moreover. the SDR was influenced by the type of electron acceptor used during the SBR operation. Thiosulfate-utilizing denitrifier cultivated with nitrite showed smaller SDR on the thiosulfate-utilizing denitrification of nitrate than those cultivated with nitrate.

• 한국환경복원기술학회지
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• 제9권1호
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• pp.31-40
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• 2006

This paper describes the results of a series of field experiments which are carried out to assess the reduction effect of railroad vibration by utilizing waste tires. The ground vibration due to train service is measured in Honam Railroad line and Kyongbu Railroad line to assess the ground vibration with the domestic railroad line and train type before field model test. From the results of these tests, frequency on train service is presented from 5Hz to 100Hz and a range of excellence frequency is presented to be about from 20Hz to 40Hz in the domestic railroad line. Also, plate bearing tests are conducted to evaluate the variation of bearing capacity with different thickness of the waste tire layer and the fill layer. Finally, field model test is performed by using tire chips ($5cm{\times}5cm$ in size) as a reduction material of railroad vibration. The reduction effect of railroad vibration by utilizing waste tires increases with increasing the thickness of the waste tire layer and the frequency of the vibration source. The results of this experimental study was shown that the waste tire can be used for reduction of the railroad vibration.

• Ocean Systems Engineering
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• 제1권1호
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• pp.17-28
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• 2011

The purpose of this paper is to demonstrate the efficacy of modeling a surface effect ship's air-cushion flexible seal utilizing a two-dimensional beam under steady state conditions. This effort is the initial phase of developing a more complex three-dimensional model of the air-seal-water fluid-structure interaction. The beam model incorporates the seal flexural rigidity and mass with large deformations while assuming linear elastic material response. The hydrodynamic pressure is derived utilizing the OpenFOAM computational fluid dynamic (CFD) solver for a given set of steady-state flow condition. The pressure distribution derived by the CFD solver is compared with the pressure required to deform the seal beam model. The air pressure, flow conditions and seal geometry are obtained from experimental analysis. The experimental data was derived from large-scale experimental tests utilizing a test apparatus of a canonical surface effect ship's flexible seal in a towing tank over a variety of test conditions.

• 디지털융복합연구
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• 제10권5호
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• pp.7-17
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• 2012

본 연구는 전자정부 수용 및 확산에 영향을 미치는 다양한 선행 요인들을 살펴보고 이 요인들이 전자정부 서비스 사용의도에 미치는 영향을 분석하는 데 목적이 있다. 전자정부 서비스 이용자를 대상으로 한 설문조사를 통해 가설을 검증한 결과, 서비스의 본원적 가치와 사회적 영향요인은 서비스 사용의도에 긍정적 영향을 미치는 것으로 나타났다. 또한 사회적 영향요인은 본원적 가치에도 긍정적으로 영향을 주어 사용의도에 간접적인 영향을 주는 것으로 나타났다. 그러나 상호작용은 사용의도에 직접적인 영향을 미치지 못하는 것으로 판정되었다. 다만 상호작용은 본원적 가치의 증대를 통해 간접적으로 영향을 미치며 그 영향이 사회적 영향요인 보다 큰 것으로 나타났다.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제32권2호
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• pp.147-174
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• 2018

본 연구에서는 STAD 협동학습 모형을 수학교과에 적용하여 학생들의 자신감 함양 및 학습동기를 유발하여 수학적 성향 및 학습태도의 향상을 도모하고자 한다. 본 연구에서의 구체적인 목적은 아래와 같다. 첫째, 학생들의 자신감 함양 및 학습동기 유발을 위하여 STAD 협동학습 모형을 구안하고 적용한다. 둘째, STAD 협동학습 모형을 적용하여 자신감 함양 및 학습동기를 유발한 수업이 수학적 성향 및 학습태도에 미치는 효과를 검증한다. 본 연구의 구체적인 목적 달성을 위한 연구문제는 아래와 같다. 첫째, 학생들의 자신감 함양 및 학습동기 유발을 위한 수학과 STAD 협동학습 모형을 설계한다. 둘째, STAD 협동학습 모형을 적용하여 자신감 함양 및 학습동기를 유발한 수업이 수학적 성향 및 학습태도에 미치는 영향을 본 연구에서 조사한다. 결론을 다음과 같이 제시 할 수 있다. STAD 협동학습 모형을 적용하여 자신감 함양 및 학습동기를 유발한 수업을 한 집단과 전통적인 교과서 위주의 설명식 수업을 한 집단을 서로 비교 분석하여 본 결과 STAD 협동학습 모형을 적용하여 자신감 함양 및 학습동기를 유발한 수업을 한 집단에서 수학적 성향과 학습태도에 유의미한 변화가 있음을 밝혔다.