• Journal of Educational Research in Mathematics
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• v.22 no.2
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• pp.203-227
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• 2012

This was to investigate how the slow learners who specially belonged to low-SES, or North Korean defectors showed their errors in mathematical learning. To conduct the study, two groups for each minority group participated in the study volunteerly during the Winter vacation, in 2011. Based on the preliminary interviews, a total of 15 units were given, focusing on building mathematical basic concepts. As results, they had some errors in common. They both were in lack of understanding of the terminologies and not able to apply the meanings of definitions and theorems to a problem. Because of uncertainty of basic knowledge of mathematics, they easily lost their focus and were apt to make a mistake. Also, they showed clear differences. North Korean defectors were not accustomed to using or understanding the meanings of Chines or English in Korean words in expressing, writing mathematical terminologies and reading data on the context. Technical errors, and misinterpreted errors were found. However, students from the low SES showed that they were familiar with mathematical words and terminologies, but their errors mostly belonged to carelessness because of the lack of mastering mathematical concepts.

• The Journal of the Korea Contents Association
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• v.15 no.3
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• pp.438-447
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• 2015

When communities of practice(CoP) was mostly informal, has been formulated. Because Knowledge management(KM) was emphasized in the business sector. So it increase interest in the COP. Since the early 2000s, the research interest has thus far grown. At a point in time has the subject, CoP, been researched for ten years, it is significant to review the literatures, the main topics as well as critical factors on the subject. In this study, the trends in the relevant researches and the performance factors from the previous studies are examined. The references for this study are limited to the authorized scholarly and scientific journals. The results therethrough processed show that total 37 researches were conducted between the year 2000 and 2012. These could be classified by the research methods as 16 case studies, 11 studies using CoP as the dependent variable, 4 studies using CoP as an independent variable and 3 theoretical discourses. 7 out of 16 case studies suggest the 14 success factors of CoP; the most influential performance factor is the external community support. 11 studies examined factors influencing the performance of CoP; 13 performance factors were proposed in these studies. The most significant factor influencing the performance of CoP is the team effectiveness.

• The Journal of the Korea Contents Association
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• v.15 no.11
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• pp.524-533
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• 2015

This study aims to prove the value of SNS tourism information by confirming the relation between SNS tourism information and perceived risk and by verifying its influence on the intention to switch tourism destination. The data was collected from 302 tourists. For data analysis, SPSS 18.0 program and AMOS 18.0 were conducted. First, functional characteristics of SNS tourism information have been verified to have no relationship with the tourist's perception of risk, and therefore the functional tourism information is thought to cause individual motive regardless of tourist's perception of risk. Second, aesthetic value and economic benefits of SNS tourism information have been analyzed to reduce perceived risk of tourists. Third, a symbol of SNS Tourism information has proved to be an element that increases the risk perceived by tourists, indicating that various kinds of tourism information provided by other channels including SNS can serve as a momentum to make tourists recognize new risks the other way round as new tourism information is accumulated, which acts as new motivating factor.

• Korean Journal of Construction Engineering and Management
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• v.11 no.4
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• pp.22-31
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• 2010

Because the estimated cost at early stage has great influence on decisions of project owner, the importance of early cost estimation is increasing. However, it depends on experience and knowledge of the estimator mainly due to shortage of information. Those tendency developed into case-based reasoning(CBR) method which solves new problems by adapting previous solution to similar past problems. The performance of CBR model is affected by attribute weight, so that its accurate determination is necessary. Previous research utilizes mathematical method or subjective judgement of estimator. In order to improve the problem of previous research, this suggests CBR schematic cost estimation method using genetic algorithm to determine attribute weight. The cost model employs nearest neighbor retrieval for selecting past case. And it estimates the cost of new cases based on cost information of extracted cases. As the result of validation for 17 testing cases, 3.57% of error rate is calculated. This rate is superior to accuracy rate proposed by AACE and the method to determine attribute weight using multiple regression analysis and feature counting. The CBR cost estimation method improve the accuracy by introducing genetic algorithm for attribute weight. Moreover, this makes user understand the problem-solving process easier than other artificial intelligence method, and find solution within short time through case retrieval algorithm.

• Journal of The Korean Association For Science Education
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• v.36 no.4
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• pp.527-538
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• 2016

The purpose of this study is to select the factors of 'Group scientific creativity' and to find out how 'Group scientific creativity' turns out in the creative problem-solving process of students. To select the factors that affect 'Group scientific creativity', this research extracted 27 influencing factors on the group creativity from the prior study and organized them according to opinions of education experts. To select factors that affect 'Group scientific creativity' in the creative problem-solving process of students, this research analyzed the group problem-solving process that has been done on 72 gifted students for two days. Main results of the study is as follows: First, nine elements such as scientific thinking, scientific knowledge, scientific information-processing capacity, motivation, challenge, age and gender, existence of diversity, creativity educational experience, and the group cohesiveness were selected as human factors. Four elements such as scientific communication skills, scientific inquiry process, autonomy, and leadership were selected as the combining factors. Also, three elements such as the learning environment, teacher types, and compensation were selected as the Environmental factors. Second, it was possible to find that the group scientific creativity influence factors affecting the creative process by analyzing the gifted students in creative-problem solving process. Based on these results, this study described additional points on the factors improving 'Group scientific-creativity.'

• Journal of The Korean Association For Science Education
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• v.33 no.7
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• pp.1403-1417
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• 2013

In this study, we investigated scientists' perception of imagination and explored characteristics of scientific imagination. For this, we found out conceptions and characteristics based on literatures which related to imagination. We recruited eight distinguished Korean scientists who have rich research experiences by using Snowball sampling for in-depth interviews (60-90 minutes). All interviews were audio-recorded and transcribed. From the analysis of interview data, we identified their perceptions of imagination and the nature of scientific imagination which scientists reflect on during their research work. Semi-structured interview protocol was focused on: 1) how scientists perceive 'imagination' and 2) how scientists perceive the role of imagination in their scientific research. As results, we found out that scientists agreed that imagination plays an important role in scientific research process and they perceived imagination as an intrinsic part of human life. The study also indicated that participants have modern viewpoint about imagination. Moreover, we uncovered three characteristics of imagination in the research process. 1) Curiosity and interest have been a driving force for scientists' imagination. 2) When scientists use the imagination, they can be more creative during their research. 3) Imagination contemplated realistic possibilities based on the scientific knowledge, and produced the new ones. Educational implications for utilization of scientific imagination were also suggested.

• Journal of Service Research and Studies
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• v.8 no.1
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• pp.13-26
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• 2018

Most product consists of various national components, and brand strategy using nationality images is prevalent in marketing field. Country of origin is meaningful consideration for decision making. The purpose is that how consumer evaluate the global brand depending on two-sided dimension of country of origin. This research aims to examine the interaction effect of two-sided country of origin and moderating effect of global identity. In study 1, two-way interaction effect of origin of brand and origin of production was significant with social prestige. In study 2, there-way ANOVA provided marginally significant main effect of origin of brand and global identity. Two-way interaction effect of origin of brand and production was significant with social prestige. Also two-way interaction effect origin of brand and global identity was significant with innovation and social responsibility. Three-way interaction of origin of brand, origin of production, and global identity was significant with social responsibility, this approved moderating effect of global identity. Results contribute to understanding global brands strategy using country of origin effect, and to adding new knowledge to the country of origin literature. Academic and practical implications, limitations, and future research directions were discussed.

• Proceedings of the Population Association of Korea Conference
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• 2006.12a
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• pp.113-128
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• 2006

The main theme of this paper was to investigate the role of education as a source of economic growth in Korea. In this study, first, the objective mode was built by extending neoclassical Solow growth theory. Second, the capital deepening typical of an endogenous economic per-capita growth model was developed empirically for seven East-Asian economies as for the medium term, during $1975{\sim}2004$. And then we found the meaning of coefficients of growth factors, direct relative contribution of each input to per-capita growth in seven East-Asian countries, relative indirect contribution of education to per-capita growth in Korea, accounting for difference due to accumulation in Korea. The indirect relative contributions of secondary and higher education and R&D to per-capita growth change the results somewhat. Secondary education is still the largest single contributor 83.6 percent of predicted growth is due to secondary school enrollment in Korea. Primary education comes second with 37.5 percent and followed by higher education at -52.9 percent. Physical investment gives 62.3 percent and unimproved raw labor contributes only -1.4 percent.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2004.05a
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• pp.357-361
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• 2004

반복적인 실험을 통해 부추 김치에서 분리된 대부분의 유산균은 항유전독성 효과를 갖는 것으로 보인다. 이는 전에 시행되었던 각종 김치의 유산균을 이용한 항유전독성 효과 조사에서도 다른 김치유산균에 비해서 부추김치의 유산균이 항유전독성효과가 높다는 것을 통해서도 증명되었다. 유산균 섭취시에 균주가 장내의 혐기성 상태에서 존재하게 되는데 아직까지는 혐기성 상태에서 배양된 균주의 항유전독성효과가 그다지 높지 않은 것으로 보여진다. 따라서 혐기성 상태에서 배양된 항유전독성효과가 높은 균주를 찾는 것이 시급하다고 본다. 그러나 호기성 상태에서 배양된 항유전독성이 높은 균주들이 혐기성 상태에서도 배양되는 것을 확인하였고 이 균주들의 장내 생존 가능성을 예측할 수 있다. 물론 이를 뒷받침하기 위해서 이 유산균들이 위와 장내의 조건에서 생존가능하는지에 대해 pH 생존 조사를 해야 할 것이다. 또한 혐기성 상태에서 배양되었을 때에도 이 균주들이 항유전독성 효과가 있는지도 앞으로 실시되어야 할 과제일 것이다. 항유전독성 효과와 달리 항암효과에 대해서는 높은 효과를 보이지 않았지만 본래 CT-26 세포가 대장암 세포이기에 이 세포 자체의 DNA에 손상 복구율을 부여했다는 것에 의미를 둘 수 있겠다. 항유전독성효과와 항암효과가 있는 유산균의 분리를 통해 우리가 다음으로 해야 될 일은 첫째로 이 균주들에 대해 여러 가지 특성을 찾아 동정하고 둘째로 지금까지 밝혀진 결과를 in vivo상에서 검증하는 것이다. 지금까지 밝혀진 유산균은 대부분 발효 유제품에서 자라는 유산균인데 한국인이 주로 섭취하는 각종 김치나 부추김치 등에서 분리한 균주에서도 이 기능이 있음을 밝힌다면 이들의 소비에 도움이 될 것이고 또한 이 균주들을 이용해 향유전독성, 항암성 등이 있는 기능성 제품을 만들어 낼 수 있을 것이다.첨가한 햄보다 적었다.분산시키는 것으로 나타났다. 또한 고기를 단계별 복합처리로 저 allergy 처리는 단계별로 점차적으로 allergy가 감소되었다. 즉 단계별로 억제가 안되는 것부터 억제되는 처리를 복합적으로 처리한 것으로 그 단계는 천연효소처리에 인산염 처리, 여기에 초음파 처리, 마지막 단계로 3분 끓이면 억제율이 68%까지 억제되었다. 이는 단일처리시 전혀 억제를 못하는 처리를 단계별로 한 단계씩 더해가면 allergy 억제효과가 나타난다고 할 수 있겠다. 초음파 처리도 역시 저 allergy 처리 공정에 이용될 수 있는데 이것은 그 처리로 인해 새로운 알러젠이 생성될 수도 있다. 또한 복합처리로 allergy를 감소시키면 연속적이고 동시적으로 하기 때문에 원가를 절감할 수 있다.환경현안에 대한 정치경제적 접근을 외면하지 말고 교과서 저작의 소재로 삼을 수 있어야 하며, 이는 '환경관리주의'와 '녹색소비'에 머물러 있는 '환경 지식교육'과 실천을 한단계 진전시키는 작업으로 이어질 것이다. 이후 10년의 환경교육은 바로 '생태적 합리성'과 '환경정의'라는 두 '화두'에 터하여 세워져야 한다.배액에서 약해를 보였으나, 25% 야자지방산의 경우 50 ${\sim}$ 100배액 어디에서도 액해를 보이지 않았다. 별도로 적용한 시험에서, 토마토의 경우에도 25% 야자지방산 비누 50 ${\sim}$ 100배액 모두 약해를 발생하지 않았으나, 오이에서는 25% 야자지방산 비누 100배액에도 약해를 나타내었다. 12. 이상의 결과, 천연지방산을 이용하여 유기농업에 허용되는 각종의 살충비누를 제조할 수 있었으며, 방제가 조사결과 진딧물, 응애 등 껍질이 연약한 곤충의 방제에 효과적인 것으로 나타났다. 따라서 제조된 살충비누를 활용하면 환경친화적인 해

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2006.05a
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• pp.178-193
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• 2006

기업들이 고객에 대해 관심을 가지는 이유는 고객관계관리(CRM: customer relationship management)의 중요성이 그 어느 때 보다도 강조되고 있기 때문이며, 또한 강력한 고객관계가 기업의 경쟁우위를 위한 주요 수단이 되고 있음을 지각하고 있기 때문이다. 특히 인터넷 쇼핑몰에 대한 고객의 충성행위는 인터넷 쇼핑몰이 제공하는 다양한 상품 및 서비스와 더불어 성공적인 고객관계를 위해서는 매우 중요하다. 또한 인터넷 쇼핑몰의 입장에서는 여러 가지 다양한 서비스를 인터넷 쇼핑몰 이용 고객에게 제공함으로써 인터넷 쇼핑몰을 이용하는 고객들에 대한 신뢰와 몰입을 증가시킴으로써 인터넷 쇼핑몰 이용 고객들로 하여금 인터넷 쇼핑몰에 대해 높은 충성도를 가지게 할 수 있을 것이다. 따라서 본 연구는 인터넷 쇼핑몰 이용 고객에 대한 고객충성행위를 신뢰형성요인, 몰입형성요인, 신뢰, 몰입이라는 측면에서 설명하고자 하였다. 즉, 인터넷 쇼핑몰의 신뢰형성요인(능력, 호의성, 무결성)이 신뢰에 영향을 미치고, 몰입형성요인(촉진정보, 상호작용성, 쇼핑몰디자인)이 몰입에 영향을 미친다. 그리고 신뢰는 몰입과 고객충성행위에, 몰입은 고객충성행위에 영향을 미칠 수 있음을 제안하고 이를 인터넷 쇼핑몰 이용 경험이 있는 고객들을 대상으로 실증적으로 분석하였다. 실증분석 결과에 따르면 제안모델은 수용가능한 모델적합도를 보여 주었으며, 또한 본 연구에서 제시한 9개의 가설 모두가 통계적으로 유의한 결과를 보여주었다. 특히 신뢰는 신뢰형성요인(능력, 호의성, 무결성)과 고객충성행위사이에 매개변수의 역할을 수행하고있으며, 몰입은 몰입형성요인(촉진정보, 상호작용성, 쇼핑몰디자인)과 고객충성행위사이 그리고 신뢰와 고객충성행위사이에 매개변수의 역할을 수행하는 것으로 나타났다.동지역의 고기후를 해석함으로써 고기후적 및 고생태학적 의미를 연구해 보고자 하였다.에서는 시스템 등급에 영향을 준다. 향후에는 더욱 더 다양한 상호의존 모델들이 정량화될 필요성이 있다고 본다. 진행하였다. 줄여서 보다 더 정확하고, 지능적인 규칙구성요소 추출 방법론을 제시하고 구현하여 지식관리자의 규칙습득에 대한 부담을 줄여 주고자 한다. 도움을 받을 수 있게 되었다.을 거치도록 되어있다. 교통주제도는 국가의 교통정책결정과 관련분야의 기초자료로서 다양하게 활용되고 있으며, 특히 ITS 노드/링크 기본지도로 활용되는 등 교통 분야의 중요한 지리정보로서 구축되고 있다..20{\pm}0.37L$, 72시간에 $1.33{\pm}0.33L$로 유의한 차이를 보였으므로(F=6.153, P=0.004), 술 후 폐환기능 회복에 효과가 있다. 4) 실험군과 대조군의 수술 후 노력성 폐활량은 수술 후 72시간에서 실험군이 $1.90{\pm}0.61L$, 대조군이 $1.51{\pm}0.38L$로 유의한 차이를 보였다(t=2.620, P=0.013). 5) 실험군과 대조군의 수술 후 일초 노력성 호기량은 수술 후 24시간에서 $1.33{\pm}0.56L,\;1.00{\ge}0.28L$로 유의한 차이를 보였고(t=2.530, P=0.017), 술 후 72시간에서 $1.72{\pm}0.65L,\;1.33{\pm}0.3L$로 유의한 차이를 보였다(t=2.540, P=0.016). 6) 대상자의 술 후 폐환기능에 영향을 미치는 요인은 성별로 나타났다. 이에 따른 폐환기능의 차이를 보면, 실험군의 술 후 노력성 폐활량이 48시간에 남자($1.78{\pm}0.61L$