• Information Systems Review
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• v.25 no.3
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• pp.27-41
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• 2023

Unlike the previous works focusing on the state-of-the-art methodologies to improve the performance of machine learning models, this study improves the 'quality' of training data used in machine learning. We propose a method to enhance the quality of training data through the processing of 'local grammar,' frequently used in corpus analysis. We collected a vast amount of unstructured corporate review text data posted by employees working in the top 100 companies in Korea. After improving the data quality using the local grammar process, we confirmed that the classification model with local grammar outperformed the model without it in terms of classification performance. We defined five factors of work engagement as classification categories, and analyzed how the pattern of reviews changed before and after the COVID-19 pandemic. Through this study, we provide evidence that shows the value of the local grammar-based automatic identification and classification of employee experiences, and offer some clues for significant organizational cultural phenomena.

• Journal of the Korean Institute of Landscape Architecture
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• v.36 no.4
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• pp.36-47
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• 2008

The purpose of this study is to classify and assess the characteristics of urban Korean parks by on-site park users' reactions, such as satisfaction, preference and cognitive image of the park and park facilities. The park facilities are classified into five types of satisfaction: management status, activity facilities, convenient facilities, circulation and density, and landscape facilities. The park users are satisfied with conversation, rest and relaxation in the parks, but not satisfied with studying and nature experience. The behaviors in the park are classified as park activities, emotional and experiential activities, and nature activities. The results indicate that the images of the parks are stable, comfortable and natural. There are three factors to classifying the park images: nature-harmony, openness, uniqueness. Preferences for each parks are generally good. According to the criteria such as satisfaction of park facility, behavioral satisfaction, images and preference for each park, the 12 parks are divided into 5 different types: multi-purpose park, well-balanced park with natural elements, urban open space, park to be improved, and ecological park. The characteristics of each park was analyzed and categorized. This study dealt with only the parks in Seoul and its environs, and the survey was only done during the summer season. Therefore, further research is necessary to enlarge and generalize the results of this study, considering seasonal and regional variations.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.33 no.4
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• pp.207-228
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• 2022

This study compared the behavior of using the reading room of the university library before and after COVID-19 and confirmed the changes and characteristics. As a subject of the study, 579,555 reading room usage data for the 2019-2021 school year, three years before and after the outbreak of COVID-19, were collected and analyzed for reading room utilization. In addition, the purpose of visiting the library was compared based on 120,090 data usage logs, and the relationship between the characteristics and usage rate of each reading room was analyzed. Ultimately, it is intended to suggest a way to increase utilization by reflecting the needs of users derived from changes in usage behavior during the COVID-19 period in the reading room space of the university library. It is hoped that the results of this research will be used as basic data for the operation of library reading rooms and the establishment of space reconstruction policies to cope with the New normal era after pandemic.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2007.05a
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• pp.227-230
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• 2007

The expansion of open education and the 7th revision of educational curriculum have brought big changes in the school facilities. In response to the integrated curriculum for the first and second grades of elementary school, various plans, such as open classroom, expanded classroom size, and the installation of multi-purpose space, have been attempted. However, such plans have appeared in the form of an open classroom--a uniform spatial composition. As a result, a plan for unit learning space to support the educational curriculum and activities for low grade levels is still insufficient. In the case of advanced countries, a lot of studies on space are being actively conducted to develop the creativity of children and to facilitate free-style learning, and such space is actually applied to a real educational environment. Therefore, this study will analyze the spatial composition of unit learning space for low grade level elementary schools in Korea. From the cases of advanced countries, a more concrete proposal will be suggested to diversify unit learning space for low grade levels.

• Information Systems Review
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• v.18 no.4
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• pp.69-88
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• 2016

Nowadays, organizations have adopted Smart Work to efficiently manage tasks, such as electronic document approval, customer management, and site inspection, without spatial-temporal constraints. Smartphones, which are commonly used in Smart Work, enable individuals to perform their jobs anytime and anywhere, thus blurring the boundary between work and non-work. To solve the problem of blurred work/non-work boundaries, a construct of self-control and affective factors needs to be considered because business style is changed from command to autonomy in the Smart Work context. Moreover, employees can convey their emotions easily over smartphones. Recent marketing studies have analyzed consumers' behavior based on the combination of cognitive, affective, and behavioral components, and researchers of information systems are also interested in these factors. However, previous research has some limitations, such as not classifying factors into cognitive, affective, and behavioral as well as not covering all three factors. Therefore, we explore the roles of cognitive, affective, and behavioral components in emotional exhaustion and education performance, and conduct a survey on undergraduate and graduate students, who are the major users of smartphones. Findings show that when individuals improve their cognitive capability (self-control) and usage experience (smartphone communication and internet usage), they can decrease emotional exhaustion and increase education performance. In the role of affective capability, increasing education performance is partially accepted. These results imply that organizations should not focus on controlling the usage of smartphones but on promoting appropriate smartphone usage.

• Proceedings of the Korean System Dynamics Society
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• 2002.02a
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• pp.43-63
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• 2002

IT 기업과 같이 그들이 보유한 지식이 수익 창출의 근원이 되는 기업들은 개인의 경험들을 조직의 지식으로 변환하고, 보존하여 그들의 구성원들이 이러한 지식을 활용할 수 있도록 하기 위해 많은 노력을 기울이고 있다. 지식 경영의 중요성을 강조하는 많은 선행연구들은 이러한 활동이 조직 학습을 가속화시키며, 경쟁력을 강화시킴으로써 시장 변화에 대한 대응능력을 강화시킬 수 있음을 강조한다. 그러나 구성원들의 가용 시간이 곧 생산을 위한 투입 요소가 되는 IT기업에 있어서 지식관리활동은 조직 구성원들이 수익 창출을 위한 업무수행 시간을 할애해야 하고 동시에 비용을 발생시키는 딜레마를 안고 있다. 이러한 이유로 IT기업의 경우 시간과 재원의 배분은 전사 적 전략수립에 있어서 매우 중요한 정책 결정이 됨에도 불구하고 이제까지 이를 종합적인 시각에서 이해하고자 하는 연구는 그리 많지 않았다. 본 논문은 한 IT기업의 사례를 통해 비재무적 자산인 지식을 효과적으로 관리하고 이를 통하여 재무적 성과를 극대화하기 위한 시스템 다이내믹스 모델의 전략적 활용방안을 모색해 보았다. 이러한 시도는 경영자를 비롯한 의사결정 자들이 지식의 동태성과 이에 영향을 미치는 여러 영향요인들에 대한 단선적인 이해를 벗어나 종합적인 견지에서 기업이 보유한 지식의 구조와 행태를 이해하는데 도움이 될 것이며 이를 통하여 기업의 지식관리 전략 수립의 기초를 제공해 줄 것이다.

• Digital Contents
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• no.2 s.153
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• pp.90-95
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• 2006

필자와 비슷한 또래로 1980년대에 중·고등학교를 다녔던 서른 중반의 아저씨 혹은 아줌마라면, 그 당시 한창 유행했던 휴대용 카세트테이프 플레이어를 기억할 것이다. 대표적인 제품이었던 일본 S사의 W 상표를 가진 플레이어를 가방에서 꺼내 이어폰을 꽂고 있는 것만으로도 주위 친구들의 부러움을 사곤 했다. 등하교 길에 전영록과 김현식 같은 가수의 테이프를 듣고, 야간 자율학습 시간에 FM라디오로 가위바위보나 별밤과 같은 프로그램을 듣기도 했다. 이제는 시간이 지나 등하교 대신에 출퇴근을 하는 입장이지만, 눈에 비춰지는 모습은예전 모습과 일견 비슷해 보이기도 하다. 귀에 이어폰을 꽂고 무언가를 듣고 있는 모습은 줄곧 봐왔던 행태다. 하지만, 뭔가 다르다. 듣는 것 뿐만 아니라 이제는 보기까지 한다. 손에 든 기기의 액정화면을 통해 영화를 보고, 교육방송을 보고, TV를 보고, 게임을 한다. 시간은 세상을 이렇게 바꾸어 놓았다.

• Proceedings of the Korea Information Processing Society Conference
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• 2018.05a
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• pp.187-190
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• 2018

최근 프로그래밍 교육에서 학생들의 학습 성취도를 빠르고 정확하게 평가하기 위하여 자동 채점 시스템을 사용한다. 강의를 통해 습득한 이론적인 지식을 이해하기 위해 직접 코드를 작성하는 실습이 진행되는 프로그래밍 교육에서 효과적이기 때문이다. 현재 실습에 필요한 실습문항의 대부분은 강사가 직접 생성해야 한다. 특히 강의내용을 바탕으로 예제 소스코드를 이해하여 빈 칸에 알맞은 코드를 작성하는 실습은 강사가 직접 빈 칸에 해당되는 부분을 예제 코드에서 지정해줘야 하는 추가적인 작업이 필요하다. 이러한 빈 칸 채우기 문항은 일반적으로 빈 칸이 고정된 행태이기 예문에 학생들이 답안을 공유하기 쉽다. 이를 막기 위해서 강사는 유사한 내용의 빈 칸 채우기 문항을 추가적으로 생성해야 한다. 하지만 대부분의 자동 채점 시스템은 이를 지원하지 않거나 강사에게 빈 칸을 직접 지정하도록 하는 경우가 대부분이다. 따라서 본 논문에서는 이러한 문제를 해결하는 빈 칸 채우기 문항 자동생성기법을 제안하고 적용 사례를 보인다.

• Journal of the Korean Institute of Intelligent Systems
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• v.10 no.5
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• pp.506-512
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• 2000

In this paper, we propose a Fuzzy Classifier System(FCS) makes the classifier system be able to carry out the mapping from continuous inputs to outputs. The FCS is based on the fuzzy controller system combined with machine learning. Therefore the antecedent and consequent of a classifier in FCS are the same as those of a fuzzy rule. In this paper, the FCS modifies input message to fuzzified message and stores those in the message list. The FCS constructs rule-base through matching between messages of message list and classifiers of fuzzy classifier list. The FCS verifies the effectiveness of classifiers using Bucket Brigade algorithm. Also the FCS employs the Genetic Algorithms to generate new rules and modifY rules when performance of the system needs to be improved. Then the FCS finds the set of the effective rules. We will verifY the effectiveness of the poposed FCS by applying it to Autonomous Mobile Robot avoiding the obstacle and reaching the goal.

• Journal of Convergence for Information Technology
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• v.10 no.4
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• pp.55-64
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• 2020

This research empirically explores the relationship between types of performance information use, decision making behaviors and performance of government organizations. We measured two types of using performance information, relevance of performance index, variety of performance information, and levels of manager intervention by surveying performance managers of each government ministry or agency and also measured performance by using performance reports. The results of fuzzy-set qualitative comparative analysis suggest that hard use and soft use have impact on performance by combining with characteristics of performance information and managers decision-making by intervening performance management processes.