• Journal of the Korean earth science society
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• v.30 no.2
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• pp.257-264
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• 2009

The purpose of this study was to examine the effects of the game application learning 8th graders' scientific attitude, which was utilized as a strategy to improve the teaching skills and methods in the lesson of 'the history of the earth and diastrophism'. The subjects of this study were 120 students of 8th grade at a middle school located in a metropolitan city in Korea. To start off with homogeneity of a group, this study recruited participants by the results of a diagnostic test taken early in the year and a mid-term examination taken at the end of April. As a result, a total of 4 male classes that showed similar results on the two tests were selected and divided into two groups: one in experimental and the other in control. In addition, the top 20% students and the low 20% students were chosen for comparison of their scientific attitudes based on the results of the mid-term examination. The traditional teachings were offered to the control groups while the experimental lessons with the game activities performed at the stages of application and summary in teaching were offered to the experimental groups over 10 periods. Results of the pre- and post-test on the students' scientific attitude demonstrated that there was a statistical significance between the two groups, which suggested that the experimental group showed a meaningful improvement in the scientific attitude after experimental intervention lesson activities with game applications. Also, the more meaningful improvement in the scientific attitude was found in the lower group than in the higher group. It implies that lessons with the game activities motivated the students to voluntarily participate in school science learning by enhancing their interests. Therefore, it is suggested that game application learning be a new teaching-learning material that helps to encourage learners to actively participate in middle school science learning.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.47 no.2
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• pp.106-114
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• 2010

We proposed an unified design methodology and verification platform for giga-scale System on Chip (SoC). According to the growth of VLSI integration, the existing RTL design methodology has a limitation of a production gap because a design complexity increases. A verification methodology need an evolution to overcome a verification gap. The proposed platform includes a high level synthesis, and we develop a power-aware verification platform for low power design and verification automation using it's results. We developed a verification automation and power-aware verification methodology based on control and data flow graph (CDFG) and an abstract level language and RTL. The verification platform includes self-checking and the coverage driven verification methodology. Especially, the number of the random vector decreases minimum 5.75 times with the constrained random vector algorithm which is developed for the power-aware verification. This platform can verify a low power design with a general logic simulator using a power and power cell modeling method. This unified design and verification platform allow automatically to verify, design and synthesis the giga-scale design from the system level to RTL level in the whole design flow.

• Journal of The Korean Association For Science Education
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• v.18 no.3
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• pp.273-282
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• 1998

The purpose of this study is to compare the effect of concept formation between conflicted case and non-conflicted case as a method of learning science concepts. This study consists of 8 classes in 5th and 6th grade of elementary school children's in Kyoung-Buk, which were divided into conflicted group and non-conflicted group. The research procedure is as follows : first, two groups were asked the introducing problems-one was asked the conflicting problem, the other was asked the non-conflicting problems. Futhermore, the incorrect-answered students of conflicting problems were classified into conflict group am the correct-answered students of non-conflicting problems were classified into non-conflict group. Secondly, the demonstration and picture presentation about the introducing problems were carried out. Thirdly, the researcher introduced scientific concepts to the students. Afterwards, posttests, made up of the same items, were presented to the students-three times-posttest, delayed posttest(one week), second delayed posttest(one month). Finally, the degree of concept formation between the two groups was compared and analyzed by these results.

• Journal of Ginseng Research
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• v.23 no.2 s.54
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• pp.115-121
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• 1999

Effects of single and repeated administration of various nootropic candidates were examined on impaired acquisition by single oral administration of 3 g/kg ethanol (EtOH) in step through test. The inhibitory effect of EtOH on acquisition was significantly reduced by single picrotoxin, but not affected by diazepam, acetyl-L-carnitine and apomorphine. Single or repeated red ginseng total saponin and deprenyl, single piracetam, repeated N-methyl-D-glucamine, but not single or repeated protopanaxadiol, protopanaxatriol and centrophenoxine significantly ameliorated the impairment of acquisition by EtOH. On the other hand, the inhibitory effect of repeated red ginseng total saponin but not that of repeated N-methyl-D-Glucamine, was significantly blocked by pretreatment of $\alpha$-methyl-$\rho$-tyrosine, a inhibitor of catecholamine synthesis. Whereas, the inhibitory effect of repeated deprenyl on EtOH amnesia was exaggerated by $\alpha$-methyl-$\rho$-tyrosine. These results suggest that the amelioration processes of drugs on ethanol amnesia involve complex mechanism between the central GABAergic and dopaminergic neuronal activity in memory and learning, although the effects of repeated drugs administration are not yet clear.

• Journal of Korea Port Economic Association
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• v.25 no.3
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• pp.207-228
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• 2009

The purpose of this paper is to analyze the concentration effect of Busan container terminal. Productivity and efficiency have played key role to attract more cargo to a port because these are important factors to select liners’ calling port in vessel deployment. It means that productivity directly links with the liners’ vessel operation cost. The main results of this paper are as follows: the port concentration by terminal integration can improve the port's external image with recovering tariff competitiveness and also facilitate economic effect of size through efficient management.

• Journal of Convergence for Information Technology
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• v.8 no.3
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• pp.161-168
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• 2018

This study examined the relationship between covert narcissism on depression for College students as a mediator Emotional Clarity and Ambivalence over Emotional Expressiveness through structural equation modeling. To this end, we conducted a survey of 343 university students living in central area of Korea, a measure of CNS, BDI, TMMS, AEQ-K. The result of the study were as follows. First, all the variables had meaningful positive of negative correlations. Secondly, When Covert Narcissism affects Depression, Emotional Clarity and Ambivalence over emotional expressiveness were full mediated. Third, the indirect effects of Emotional Clarity, Ambivalence over Emotional Expressiveness on the effects of covert narcissism on depression were relevance. Finally, the implications and limitations of the study were discussed.

• Journal of Korea Port Economic Association
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• v.24 no.4
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• pp.237-255
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• 2008

This paper aims to clarify if clustering effects among industries exist and if port-industry clustering effects exist. A knock-down approach was used in a survey and 16 industries were categorized. We defined which industry is more competitive in industry clusters and port-industry clusters. Another survey to experts was carried out to identify which industry is more appropriate to one of the three ports in Sudokwon (Seoul Metropolitan Areas): Incheon port, Pyungtaik port and Dangjin port. Five manufacturing industries are selected considering port-industry clustering relationships in this area and Analytic Hierarch Process was used for a pairwise comparison. Locational, social and economic factors are selected for 1st level. A result shows that Incheon port is more competitive in petroleum manufacturing, primary metal manufacturing and rubber and plastic manufacturing and Pyeontaik port is more competitive in metal assembly manufacturing and automobile and trailer manufacturing. However, sensitivity analysis shows a turnover of ranking in some industries. As there exist slight differences among three ports, cooperation is necessary when the government and Port Authorities make plans.

• Journal of The Korean Association of Information Education
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• v.14 no.4
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• pp.619-626
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• 2010

In this study, we performed experimental studies on the educational programming languages of Dolittle and Robot to compare and analyze their effect on improving creativity. We formed three sixth grade classes, totaling 99 students, into a Robot class, a Dolittle class, and a general class that served as a neutral. The Dolittle class and the Robot class took ten programming lessons with specific hand-in operations, as well as feedback and discussion, during ten weeks. The experiment results showed that student creativity in the two programming classes improved more than that of students in the general class. Especially creativity of the students in the Robot class improved the most. Moreover, the mean creativity of the lower academic achievement group was slightly better than that of the higher group. This implies that there is no positive correlation between academic achievement and creativity.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 1994.07a
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• pp.75-91
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• 1994

제주도의 지하수는 상위지하수, 기저지하수, 연안용출수, 심부지하수 등으로 분류될 수 있다. 이들을 효율적으로 활용하고 또 보존, 관리하기 위하여는 탐사가 선행되어야 한다. 구성물질의 물성대비를 탐사의 원리로 하는 물리탐사는 간접적 정보를 제공한다는 점에서 조사단계에서 흔히 간과되어 왔으나, 지표 상부에서 지하 심부까지의 정보를 제공할 수 있는 유일한 탐사방법이라는 점에서 그 중요성이 재인식되어야 한다. 물리탐사는 비파괴적인 탐사방법일 뿐 아니라 날은 탐사범위를 상대적으로 짧은 기간에 탐사할 수 있는 경제성을 갖고 있기 때문에 결과적으로 조사단계에서 소요되는 총비용을 현저히 줄일 수 있기 때문이다. 필자는 여기서, 제주도의 지하수문제에 대하여 물리탐사가 담당할 수 있는 역할에 대하여 최근의 탐사실례들을 통하여 기술하고자 한다. 이들 중에는 '복합 물리탐사방법에 의한 지하수탐사', '항공원격탐사에 의한 해안 용출수탐사', '물리탐사에 의한 해수침입영역 조사' 그리고 지하수 부존과 밀접한 관련이 있는 '지질구조선 탐사' 등이 포함되어 있다. 후속의 지질조사와 시추조사에서 얻은 직접적 정보들이 물리탐사에 의한 해석에 feedback 될 수 있는 조사체계를 갖춘다면 향후 제주도의 지하수와 관련한 문제에 물리탐사가 보다 효과적으로 사용될 수 있을 것임을 강조한다.

• Proceedings of the Korea Association of Information Systems Conference
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• 2004.11a
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• pp.409-416
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• 2004

동적 공급사슬망은 복잡하고 다양한 이해관계를 가진 기업들로 구성되어 있다. 다수의 구매자로부터 주문 의뢰가 동시다발적으로 발생하므로 하위 구성원들은 경쟁적 관계에 놓이게 된다. 그러므로 최적의 공급사슬구성을 위해서는 수평적 경쟁 관계를 고려하여 구성주체들간의 협력관계를 통해 이를 해결하여야 한다. 지금까지의 스케줄링 문제에서는 상위의 구성원이 하위 구성원들을 일방적으로 선택하는 의사결정이 이루어졌으나 본 문제에서는 구성원간의 협력관계에서 에이전트를 통한 다자간 협상을 통해 공급사슬 전체의 최적화를 구성하는 방법론을 제시한다. 본 협상방법론은 단일기계에서 상이한 납기일, 조기생산(earliness), 지연생산(tardiness)을 동시에 고려하였으며 전체 공급사슬의 평균절대편차(Mean Absolute Deviation)의 최소화를 목적으로 하고 있다. 본 협상방법론의 효과성을 증명하기 위해 분지한계법(Branch & Bound)과 비교하고, 알고리즘 구현을 통해 구매자 협상방법론의 최적화 여부를 실험을 통해 증명하였다.