• 지식경영연구
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• 제14권2호
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• pp.1-24
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• 2013

With rapid changes in technology and global competition, the success of many companies has become progressively more dependent on their ability to bring unique products, services, and business models to market. Therefore, many companies have tried to use creativity to all over the management activities and the concept of creative management is emerging. Creative management is a new but rapidly growing research area. But there have been few studies on this topic. In this paper, we developed the framework for measuring Creative Management levels of a company. The contribution of this paper is the following. First, we suggested a systematic measurement tool for creative management level focused on the management capability, business process and outcomes. Secondly, the creative measurement system developed in this paper can support companies to implement creative management as a guideline for adopting creative management.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2010년도 추계학술대회
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• pp.74-75
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• 2010

As global warming due to burning fossil fuels and natural resource depletion issues have emerged, the development of renewable energy sources such as photovoltaics (PV) has been brought to recent interest. Amongst the vast efforts to harvest and convert solar energy into electricity, the module integrated converters (MIC) has become a worthy topic of research for grid-connected photovoltaic systems. Due to the required high-boosting qualities, only a restricted amount of DC/DC converter topologies can be applied to MICs. This paper investigates the possibility of a tapped-inductor boost converter as a candidate for PV MICs. A dual-inductor interleaving scheme operating slightly above the boundary of the two conduction modes (BCM) is suggested for reduction of input current ripple and minimization of component stress. A digital controller is used for implementation, assuring maximum power tracking and transfer while providing sufficient computational space for other grid connectivity applications, etc. For verification, a 200W converter is designed and simulated via computer software including component losses. High efficiency over a wide power range proves the feasibility of the proposed PV MIC system.

• 지식경영연구
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• 제19권4호
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• pp.171-185
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• 2018

Studies on online review have carried out analysis of the rating and topic as a whole. However, it is necessary to analyze opinions on various dimensions of service quality. This study classifies reviews of healthcare services into service quality dimensions, and proposes a method to identify words that are mainly referred to in each dimension. Service quality was based on the dimensions provided by SERVQUAL, and patient reviews have collected from NHSChoice. The 2,000 sentences sampled were classified into service quality dimension of SERVQUAL and a method of extracting important keywords from sentences by service quality dimension was suggested. The RAKE algorithm is used to extract key words from a single document and an index is considered to consider frequently used words in various documents. Since we need to identify key words in various reviews, we have considered frequency and discrimination (IDF) at the same time, rather than identifying key words based only on the RAKE score. In SERVQUAL dimension, we identified the words that patients mentioned mainly, and also identified the words that patients mainly refer to by review rating.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제25권1호
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• pp.45-63
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• 2022

Multicultural students are a rapidly growing population in South Korea. Previous studies from the South Korean mathematics education community have reported low mathematics achievement levels of this population compared to Korean-born students. However, a systematic literature review was hardly employed. This study aims to synthesize the factors that affect the mathematics achievement of multicultural students to provide directions for future research and practical directions. Using an Opportunity-Propensity framework suggested by Byrnes and Miller, this study analyzed twenty-seven peer-reviewed journal articles on this topic. The results showed that the majority of the studies focused on the impact of the opportunity factors such as mathematics curriculum and teachers on mathematics achievements. We suggest that more studies regarding distal factors (e.g., students' prior achievement) and propensity factors (e.g., prerequisite knowledge) are needed.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.935-941
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• 2009

In competitive society, performance management is an essential element of business success. Despite the importance of performance management, it has not been widely implemented in construction companies. In the recent years, construction companies have become more aware of its need to identify, implement, and sustain performance improvements more systematically. Thus, the objective of this paper is to develop performance management system (PMS) for construction companies. The roles of performance management system is not only measuring performance but also offering guidance to improve performance. Therefore, PMS needs benchmarking process that provides Best Practice and new knowledge. This paper investigates the case of PMSs in UK, USA, Brazil, and Chile and discusses the lessons learned. To overcome the limitations of existing PMSs, new performance measurement framework, in form of 'Construction' BSC, is proposed. Based on the 'Construction' BSC, key performance indicators are derived and methodology of performance management is suggested. This paper concludes by developing PMS for benchmarking in construction companies and recommending some further directions on this research topic.

• Communications for Statistical Applications and Methods
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• 제30권4호
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• pp.403-410
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• 2023

Two-Phase sampling, which was first introduced by Neyman (1938), has various applications in different forms. Variance estimation for two-phase sampling has been an important research topic because conventional variance estimators used in most softwares are not working. In this paper, we considered a variance estimation for two-phase sampling in which stratified two-stage cluster sampling designs are used in both phases. By defining a conditionally unbiased estimator of an approximate variance estimator, which is calculable when all elements in the first phase sample are observed, we propose an explicit form of variance estimator of the double expanded estimator for a two-phase sample. A small simulation study shows the proposed variance estimator has a negligible bias with small variance. The suggested variance estimator is also applicable to other linear estimators of the population total or mean if appropriate residuals are defined.

• Educational Technology International
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• 제6권2호
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• pp.11-21
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• 2005

The study analyzed the topics and the types of the selected articles from the 20-year-old Journal of Educational Technology(JET), flagship journal of the Korean Society of Educational Technology. Further the results were compared with those of the Educational Technology Research & Development journal. Results indicate that the JET has grown in terms of quantity and quality since its birth 20 years ago. The JET seems to be independent as a young adult. Some issues and concerns were also identified: The articles of the JET are more inclined to Experimental design in terms of research type, and to Design in terms of research topic. Balance across Types and Topics needs be kept for long-term, healthier growth. The emergence of e-Learning and high technology of Korea offered opportunities to the field. However, the monopoly of e-Learning that consumes most of the limited space of the JET raises a red flag. More balanced and quality-oriented endeavors were suggested for another 20 years coming.

• 한국간호교육학회지
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• 제7권1호
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• pp.126-142
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• 2001

Although a call for the implementation of PBL in nursing education is getting increased, it has not been actively implemented as it could be. The main reason for this situation seems to be the lack of well designed learning packages. Well designed PBL packages can be the core factor for the successful implementation of PBL. However, this seems to be the hardest task for teachers wanting to implement PBL. Therefore, the purpose of this study is to develop a systematic framework of PBL package development process and provide the examples of its application. This framework of the process of PBL package development includes thirteen steps. First of all, the team needs to decide a topic to be explored in the package and then clusters concepts related to the topic. Second, the team selects a real situation and writes it as a story. Third, knowledge, skills, and attitudes that practitioners need to know to deal with the situation will be explored. Fourth, learning objectives will be written. The next, the team will check if the situation includes multidisciplinary concepts and content. Sixth, the story will be divided into several parts. Seventh, part 1 will be written. Eighth, clinical documents related to part 1 need to be prepared. Ninth, the team will write a suggested approach for students. Then, they need to prepare a tutor's guide for part 1. Eleventh, the team will prepare a list of reading materials and plan for lectures and clinical laboratory sessions. Twelfth, they will write part 2 ~ part N following the steps from the seventh to the eleventh. The last step is evaluating the package and amending it as needed. These thirteen steps are very detailed and easy to follow for beginners. It is expected that this framework will contribute to accelerate the implementation of PBL in nursing education.

• 한국콘텐츠학회논문지
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• 제20권7호
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• pp.223-232
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• 2020

본 연구의 목적은 토픽 모델링과 주제어 네트워크 분석방법을 활용하여, 20대 청년세대에 관한 연구동향을 분석하는 것이다. 이를 위해, 지난 10년간 국내에서 20대 청년을 대상으로 발표한 학술논문 530편을 분석하였다. 연구 결과, 핵심 주제어는 '소득', '프로그램', '창업', '문화'였고, 6개의 토픽(취업 지원 서비스, 가치관, 불안정한 삶, 정부 지원 정책, 종교관, 창업 지원 서비스)이 도출되었다. 또한, 연구를 통해 20대 청년세대는 높은 디지털 기술 효용감, 효율적인 디지털 정보의 소비 추구, 의미 전복적이고 심미적인 소비패턴, 자신의 정체성을 온라인 세계에서 찾고, 현실을 지향하는 모습을 보이는 것으로 나타났다. 분석 결과를 토대로, 세대 간 가치관 격차, 지역간 발전의 불균형 문제, 소득 불평등의 주요 양극화 문제를 제기하였고, 향후 대안적 정책으로 단편적이고 일회성에 그치는 미봉책이 아닌, 장기적으로 지속성 있는 20대 청년세대 문제 해결책을 제시해야 한다는 점을 제안하였다.

• 영재교육연구
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• 제11권3호
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• pp.69-84
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• 2001

본 연구에서는 영재들을 위한 원격교육프로그램을 개발하여 영재교육센터 생들을 대상으로 교육적 효과와 활용 가능성을 파악하고자 하였다. 본 연구에서 개발한 새로운 원격교육 프로그램은 싸이언스 사이버 컨퍼런스(Science Cyber Conference), 일명 심박의 싸컨(ShimPark's Ssacon)으로 과학영재들을 위한 통합과학적 원격교육 프로그램이다. 본 사이버 교육 프로그램은 과학적으로 문제를 접근하고 그에 대한 해결과정을 스스로 고안하고 해결한 결과에 대한 다른 사람들과 상호작용을 통해 검증하고 비판적으로 사고하는 능력을 발휘함은 물론 능력 배양을 위한 것이다. 또한, 웹을 기반으로 한 자유로운 탐색과 문제를 창안하고 해결하는 일련의 과정을 홈페이지 게시판, 토론방, 대화방, 전자우편을 통해 사이버 상에서 모든 활동이 이루어지는 일종의 자기 주도적 프로젝트형 교수-학습 프로그램이라 할 수 있다. 싸이언스 사이버 컨퍼런스의 운영을 통한 교육적 효과에 대한 검토는 참여자의 보고서와 참여자들에 대한 면담을 통해 이루어졌으며, 새로운 교수-학습 방법으로서의 가능성을 확인하였다.