• Journal of the Korean Society for information Management
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• v.22 no.2 s.56
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• pp.125-145
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• 2005

This paper presents a semantic vector space retrieval model incorporating a word sense disambiguation algorithm in an attempt to improve retrieval effectiveness. Nine Korean homonyms are selected for the sense disambiguation and retrieval experiments. The total of approximately 120,000 news articles comprise the raw test collection and 18 queries including homonyms as query words are used for the retrieval experiments. A Naive Bayes classifier and EM algorithm representing supervised and unsupervised learning algorithms respectively are used for the disambiguation process. The Naive Bayes classifier achieved $92\%$ disambiguation accuracy. while the clustering performance of the EM algorithm is $67\%$ on the average. The retrieval effectiveness of the semantic vector space model incorporating the Naive Bayes classifier showed $39.6\%$ precision achieving about $7.4\%$ improvement. However, the retrieval effectiveness of the EM algorithm-based semantic retrieval is $3\%$ lower than the baseline retrieval without disambiguation. It is worth noting that the performances of disambiguation and retrieval depend on the distribution patterns of homonyms to be disambiguated as well as the characteristics of queries.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2005.11a
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• pp.9-12
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• 2005

쌍방향 TV시대를 맞아 TV를 활용한 교육 서비스가 기존 e-Learning의 한계점을 극복 할 수 있는 대안으로 혹은 또 다른 하나의 서비스로 논의되기 시작하는 단계이다. 이에 본 연구에서는 e-Learning에 대한 정의와 T-Learning에 대한 정의를 바탕으로 상호관계를 규정하고 쌍방향 TV기반의 T-Learning에서 접근 가능한 교육 유형을 고찰하였다. 또한, 인터넷 기반 학습 환경에서 기존의 산발적으로 혹은 부분적으로 이루어진 e-Learning 도입 혹은 운영 방법론에 대한 연구와 관련 변인들을 고찰하였다. 이를 바탕으로 체계적이고 통합적인 e-Learning 도입 및 운영 방법론 모델을 제시하였으며 더 나아가 TV기반 학습 환경에서의 성공적으로 T-Learning 도입 및 운영을 위한 변인 요소를 도출하기 위한 모형을 연구 제시 하였다.

• Korean Business Review
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• v.21 no.2
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• pp.111-136
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• 2008

The central purpose of this study is to examine the relationships among learning and growth perspective, internal business process perspective, custom perspective, financial perspective, and general performance. To achieve this purpose, this study uses Kaplan and Norton's(1996) Balanced Scorecard Model theory. A field survey was undertaken through questionnaire sampling a population of construction companies. The data was collected from 185 firms in Korea for the analysis. The major findings of this study can be summarized as follows; Theoretical consideration and empirical study indicate statistically significant relationship(F=7.68, p=0.000). Especially, Financial perspective appeared to mediate the relationship between non-financial perspectives and general performance. It concludes that Non-financial perspectives significant affect the financial perspective and general performance. But, there are several limitations and directions for future research that should be noted. The potential limitation of this study concerns sampling and for selection process. Future research needs to reduce potential bias by collecting data which allows multiple industries for a subset of the sample.

• Korea Trade Review
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• v.42 no.5
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• pp.93-112
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• 2017

The purpose of this study is to analyze the effects of FTA information learning in export SMEs. Therefore, this study has constructed an integrated model including the moderating effects of FTA information learning on the of export performance in SME. The relationship between SMEs' localization strategy, product innovation capacity, and FTA information learning was linked to export performance, and an empirical analysis was conducted on 195 export SMEs. The path analysis was performed using the structural equation model(SEM), and six hypotheses including the control effect were tested. As a result, the localization strategy of SMEs positively influenced product innovation capacity. On the other hand, FTA information learning did not show significant results. Product innovation capacity and FTA information learning as an antecedents showed significant results in terms of export performance. In the moderated effects analysis, the moderated effect between the localization strategy and FTA information learning did not show significant effect on the product innovation capacity. Whereas the moderated effect between the product innovation capacity and the FTA information learning significant influence on the export performance of SMEs.

• Journal of The Korean Association For Science Education
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• v.39 no.4
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• pp.545-562
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• 2019

The purpose of this study is to develop cognitive scaffolding tools and to explore their effects on integrated science process skills of high school students. For this purpose, we developed cognitive scaffolding tools including one kind of classroom instruction for training integrated process skills and two kinds of individual learning materials that students can selectively study according to their level of inquiry ability. In addition, we developed hypothetico-deductive inquiry tasks as a tool to investigate the level of students on the integrated process skills for pre-test and post-test respectively. In order to verify the effectiveness of the cognitive scaffolding tools, we conducted inferential statistics on the pre-and post-tests of the experimental group and control group to examine statistical significance of students' inquiry level change depending on the usage of the cognitive scaffolding tools. We also produced Wrightmaps based on Rasch model to compare the change of inquiry ability depending on usage of the cognitive scaffolding tools. As a result, the experimental group using the cognitive scaffolding tools showed a significantly higher scores in all the components of integrated process skills namely, designing inquiry, collecting data, analyzing data, and forming conclusion than the control group. In addition, students who used cognitive scaffolding tools improved their inquiry ability and showed a distinct transition to higher level in each component of the integrated process skills. The results of this study suggest that high school students need cognitive scaffolding to alleviate or eliminate the functional barriers they face in conducting scientific inquiries.

• KIPS Transactions on Software and Data Engineering
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• v.5 no.2
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• pp.51-58
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• 2016

The importance of SW education is being stressed recent days, and the App Inventor is getting attention as a tool of SW education. In this study, I have developed an app Inventor instruction model, which is based on the Design Based Learning and integrated with elements of computational thinking. And I taught the student to apply this model. and then analyzed the app production process and the changes of student. In developing the app, students defined the problem and made a plan to resolve them. And this student had have a sense of accomplishment and self-confidence through practical experience to implement it in their own source code.

• Journal of Internet Computing and Services
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• v.9 no.6
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• pp.127-139
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• 2008

The value of up-to-date Mobile PC such as UMPC (Ultra Mobile Personal Computer) is recognized greatly in learning environment that busywork such as characteristic of transfer easy and real time communication possibility etc. and conversation with a colleague student, free sending of studying data and public ownership etc. is required. Wish to recognize whether is acting relevant role in u - unfold learning that inflect UMPC in integration research model, and UMPC is u searching for relevant element at studying activity unfolding process u - integration Inquiry-Based Learning that present in Korean education & research information service (KERIS) at fifth-year student science time In primary school in this research. This research result could take charge role of UMPCs' studying-activity though there is persistent feedback with teacher among studying-activity although UMPC's role is utilized on constituent that can be related with studying-activity in learning process.

• Journal of Korean Library and Information Science Society
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• v.51 no.3
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• pp.123-148
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• 2020

The purpose of this study is to explore factores for subject teachers to actively participate in the LBI by establishing a relationship model between the acceptance variable and the variable for LBI and verifying with a structural equation based on the UTAUT model that explains the relationship between the variables that affect the process of accepting and utilizing the new information technology. As a result of the study, first, the performance expectancy and social influence of the subject teachers on LBI influenced the intention of teaching. Second, behavioral intention affected use behavior. Third, there were moderating effects of LBI perceived risk level on the relationship of subject teachers' social influence on LBI to behavioral intention. Based on the results above, performance expectancy, social influence, and perceived risks should be considered for activating LBI of subject teachers.

• Journal of Convergence for Information Technology
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• v.7 no.3
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• pp.55-64
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• 2017

This study was to develop a dementia prevention integration program and apply to elderly women living alone to evaluate the applicability of the program. Fifty-six participants who enrolled at local public health centers were assigned. The control and experimental groups were assigned to 28 subjects. As a result of the study, the integrated program for prevention of dementia showed that the experimental group was more effective as the self-practice program than the control group. Therefore, This program is considered to be a self-practice integrated dementia prevention program. In the future, this program should be revised and supplemented and extended to the local community, So it is necessary to seek a nursing intervention strategy that subjects can continuously practice.

• The Journal of the Korea Contents Association
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• v.10 no.3
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• pp.472-479
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• 2010

The purpose of this paper is to investigates the determinants of learner intention to reuse in e-learning. Based on attitude and flow related studies, our paper proposes a theoretical model consisting of factors such as contents sufficiency, course feedback, self-directed learning, attitude, flow, and reuse intention. The survey method was used for this paper, and data from a total of 409 users in e-learning system were used for this analysis. To analyze the data, structural equation model was used. The results of this empirical study is summarized as follows. First, contents sufficiency has a positive effect on flow as well as attitude, and learner's self-directed learning has a positive effect on flow as well as attitude. Second, both attitude and flow have a positive effect on reuse intention. The findings have significant implications for determinant indicators of reuse intention in e-learning.