• Asia pacific journal of information systems
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• 제26권2호
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• pp.299-321
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• 2016

Previous studies on strategic alliance formation have largely overlooked the effects that organizations' routine development can have on the relationship between organizations' network position and their alliance ambidexterity strategy. This study extends ambidexterity research by adding internal and network perspectives and examining their cumulative effects on alliance ambidexterity. We first acknowledge the interplay between organizations' internal knowledge exploration/exploitation strategies and organizations' alliance ambidexterity and determine that organizations with a high level of internal knowledge breadth are more likely to make focused alliance decisions. Second, our analysis of 145 US-based information technology organizations with an active alliance behavior reveals that having well-formed routines as a result of previous collaborations strengthens the tendency of brokerage organizations to follow alliances that focus on either exploration or exploitation. Although most alliance studies have commonly argued in favor of an ambidextrous approach, this study provides critical evidence that both internal knowledge exploration/exploitation strategies and development of routines constrain organizations' alliance formation decisions, guiding them towards a more focused approach.

• 한국식생활문화학회지
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• 제19권4호
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• pp.378-391
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• 2004

The Korean tea culture appeared in a variety of ceremonies of the royal household. It was a method of religion for scholars and Buddhist monks, and sometimes it also was a refinement, too. in addition, it played an important role as a household medicine for the common people. As mentioned above, the Korean tea culture has a deep-rooted effect on the Korean traditional culture from the spiritual aspect, art, learning, to the practical life. Recently the tea culture has been rapidly coming into vogue. So the tea culture has been recognised not only to be an index of the cultural level, but also to be an important cultural phenomenon. Besides, It came to be a major role as a reception method by which we can communicate with quests from ail over the world. Because preferred tea was different according to the times and to the regions, tea utensils have been changed along with the tea culture. The present Korean tea culture has a tendency to go to the somewhat different way from the traditional one. This study has the purpose to let us apprehend the Korean traditional culture and hold the national pride. In addition, the value of the Tea should be assessed more properly, and our own Tea that is unique, simple, and natural, should be settled in the our culture.

• 한국컴퓨터정보학회논문지
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• 제13권1호
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• pp.37-44
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• 2008

데이터 스트림은 시간이 경과함에 따라서 데이터의 패턴이 변화하는 특성이 있다. 데이터 스트림에 내재되어 있는 이러한 특성 (컨셉트 변화)은 분류 모델의 예측 성능을 감소시킨다. CVFDT와 IOLIN은 점진적인 분류모델의 갱신을 통해 컨셉트 변화를 해결하고자 하였다. 그러나 이러한 방법들은 작은 패턴의 변화가 전체 분류 결과에 영향을 주는 지역적 컨셉트 변화를 식별하지 못함으로써 모델을 재 구축하는 단점이 있다. 본 논문은 컨셉트변화 발생 시 지역적 컨셉트 변화를 찾음으로써 시스템의 예측성능을 향상시키는 적응형 IOLIN을 제안한다. 실험 결과는 제안 기법인 적응형 IOLIN기법이 IOLIN기법에 비해 정확률에서 약 2.8%, CVFDT기법보다 약 11.2%정도 우수하였다.

• 정보관리학회지
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• 제28권3호
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• pp.31-46
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• 2011

개인의 정보활용능력은 단기적으로는 현안 문제를 해결하고 장기적으로는 평생학습을 가능하게 해줌으로써 개인의 경쟁력에 많은 영향을 미칠 수 있다. 본 연구에서는 중요성이 부각되고 있는 정보활용능력이 개인의 성과와 상관관계를 가지는지를 대학생 집단을 대상으로 검증해 보았다. 개인의 성과 지표로는 실험집단이 대학생인 점을 고려하여 학업성취도인 평점평균을 채택하였다. 검증결과 정보활용능력(information literacy)에 대한 자기효능감(self-efficacy)과 학업성취도간에는 상관관계가 있음을 확인하였다. 또한 이러한 상관관계는 지속되는 것을 확인할 수 있었다. 이 연구를 통해 정보활용능력이 개인의 성과에 영향을 미친다는 것을 확인하였고 이는 정보활용능력 관련 교과의 개설에 대한 당위성을 제공할 수 있을 것이다.

• 동아시아식생활학회지
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• 제27권4호
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• pp.442-449
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• 2017

Adenophora triphylla var. japonica extract has been reported to have estrogenic activity and beneficial effects in postmenopausal women requiring estrogen replacement therapy. This study investigated the effects of A. triphylla extract on cognitive function in ovariectomized mice. Water extracts from A. triphylla were administrated to ovariectomized mice fed a high fat diet for 6 weeks. The step through latency time in the passive avoidance test was shortened in ovariectomized mice as compared with sham-operated mice. However, administration of A. triphylla extracts had a tendency to prolong the latency time in ovariectomized mice. Moreover, A. triphylla supplementation caused a significant decrease in mean escape latency in the water maze test. These results indicate that A. triphylla could be used to improve estrogen deficiency-related learning and memory impairments in postmenopausal women.

• 한국초등과학교육학회지:초등과학교육
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• 제33권3호
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• pp.464-478
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• 2014

The purpose of this study was to analyze the trends of the studies related to 'Community of Practice (CoP)' in Korea. 79 research papers published in the KCI level Korean journals were collected, and analyzed according to 'research area', 'research theme', 'research methods'. The definitions and the performance factors of CoP were analyzed as well. The major results of this study were: (a) the most popular research area in the studies of CoP was the area of 'company management', and the second one was the area of 'school education'; (b) the most popular research theme was to analyze of the performance and the performance factors of CoPs to explore the features of actual CoPs was the second one; (c) there was a tendency to regard the 'Sponsored CoP' as a kind of CoP, that is an controversy issue still though; (d) the performance factor of CoP was a 'knowledge sharing'. Finally, the several implications for following studies related to elementary science education were discussed.

• 조명전기설비학회논문지
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• 제26권4호
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• pp.88-94
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• 2012

The government has pushed ahead with the establishment of a connection system among education-task-qualification with regards to the promotion of engineering industry, but there has been a lack of pertinent data. In this regard, this study investigated the ways of connecting universities' engineering education with Electrical Professional Engineer examination. The results show that the tendency of questions consists of 30[%] of transmission, 16[%] of basic theory, 14[%] of transformer, 14[%] of generation, 9[%] of new technology, 11[%] of other relevant fields. This study also presents a survey on the relationship between the engineer's license and college curriculum. The curriculum of Electrical Engineering Department of a leading National University in Seoul is investigated in relation to the Examination. Some learning materials for successful completion of the university curriculum and acquisition of the Professional Engineer license are also recommended.

• 한국멀티미디어학회논문지
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• 제22권4호
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• pp.480-490
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• 2019

Nowadays, Electronic Medical Record (EMR) has just implemented at few hospitals for Outpatient Department (OPD). OPD is the diversified data, it includes demographic and diseases of patient, so it need to be clustered in order to explore the hidden rules and the relationship of data types of patient's information. In this paper, we propose a novel approach for unsupervised clustering of patient's demographic and diseases in OPD. Firstly, we collect data from a hospital at OPD. Then, we preprocess and transform data by using powerful techniques such as standardization, label encoder, and categorical encoder. After obtaining transformed data, we use some strong experiments, techniques, and evaluation to select the best number of clusters and best clustering algorithm. In addition, we use some tests and measurements to analyze and evaluate cluster tendency, models, and algorithms. Finally, we obtain the results to analyze and discover new knowledge, meanings, and rules. Clusters that are found out in this research provide knowledge to medical managers and doctors. From these information, they can improve the patient management methods, patient arrangement methods, and doctor's ability. In addition, it is a reference for medical data scientist to mine OPD dataset.

• Journal of Information Processing Systems
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• 제15권3호
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• pp.645-654
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• 2019

The purpose of this study was to collect and analyze personal bio data and social network services (SNS) data, derive user preference and user life pattern, and propose intuitive and precise user modeling. This study not only tried to conduct eye tracking experiments using various smart devices to be the ground of the recommendation system considering the attribute of smart devices, but also derived classification preference by analyzing eye tracking data of collected bio data and SNS data. In addition, this study intended to combine and analyze preference of the common classification of the two types of data, derive final preference by each smart device, and based on user life pattern extracted from final preference and collected bio data (amount of activity, sleep), draw the similarity between users using Pearson correlation coefficient. Through derivation of preference considering the attribute of smart devices, it could be found that users would be influenced by smart devices. With user modeling using user behavior pattern, eye tracking, and user preference, this study tried to contribute to the research on the recommendation system that should precisely reflect user tendency.

• 한국초등과학교육학회지:초등과학교육
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• 제38권3호
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• pp.360-374
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• 2019

The purpose of this study is to investigate the self-perceptions of the elementary school students' on the affective, behavioral and cognitive domains in science class. To see if there are differences in students' perceptions according to grade levels, a self-perception questionnaire was applied to third and fifth grade students in Seoul, Korea. The major results of the study are as follows. First, the perception level of the affective domain was higher than that of the cognitive domain in third grade students. There was no significant difference in the self-perception level of the fifth grade students. Both third and fifth grade students perceived the greatest improvement in the cognitive domain through one year of science teaching. Second, in the life science class, the same tendency was also observed. The students in the third and fifth grade reported that cognitive domains were the most improved through the one-year life science class. Third, when the students' perceptions were compared by grades, the third grade students showed higher self-perception scores than fifth grade students. As the grade increased, the perception scores of the students' lowered. Based on these findings, implications for science education research and teaching and learning at school are discussed.