• 한국수학교육학회지시리즈D:수학교육연구
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• 제12권2호
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• pp.85-108
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• 2008

In this study, we created, implemented, and evaluated the impact of proportional reasoning authentic investigative activities on the mathematical content and pedagogical knowledge and attitudes of pre-service elementary and middle school mathematics teachers. For this purpose, a special teaching model was developed, implemented, and tested as part of the pre-service mathematics teacher training programs conducted in Israeli teacher colleges. The model was developed following pilot studies investigating the change in mathematical and pedagogical knowledge of pre- and in-service mathematics teachers, due to experience in authentic proportional reasoning activities. The conclusion of the study is that application of the model, through which the pre-service teachers gain experience and are exposed to authentic proportional reasoning activities with incorporation of theory (reading and analyzing relevant research reports) and practice, leads to a significant positive change in the pre-service teachers' mathematical content and pedagogical knowledge. In addition, improvement occurred in their attitudes and beliefs towards learning and teaching mathematics in general, and ratio and proportion in particular.

• 한국환경교육학회지:환경교육
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• 제12권1호
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• pp.378-390
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• 1999

The purpose of this study is to investigate what are objects in environmental education and to develop the teaching model for environmental education. The major objects of environmental education is how to teach students who not only take knowledge/skill, but also change their behavior with responsibility for environment. In order to change students' behaviors for environment, Hungerford recommended that teachers have teaching strategies with recognition, evaluation, and adaptation. Also, McCarthy developed teaching model to engage immediate personal meaning, to raise intellectual awareness of a concept, to enhance skills that students can use in their lives, and to foster personal adaptations. Based on the Hungerford's teaching strategies, and Mccarthy's 4MAT system, a teaching model is developed to encourage thinking skill, problem-solving ability, interesting, and participation in the class. The basic steps of the teaching model in this study are experience/recognition, knowledge/skill, evaluation, and adaptation/new experience and 8 sub-steps for instructional methodologies are developed to match of all students' learning style types in a classroom. This model will make it possible to raise the efficiency of instruction, and contribute to changing students who have responsibilities for their environmental behaviors. This model will be supplemented in schools, and applied to developing other instructional issues.

• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.550-555
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• 2011

Utilizing construction knowledge and experiences in design phase can reduce change orders and improve productivity in construction phase. To do so, information must be made available to the design team in time. Current approaches for effective utilization of constructability knowledge, however, only focus on the formalization of constructability knowledge such as a checklist, which lacks the consideration of the appropriate use at the proper point in time. The inadequate use of constructability knowledge can result in unnecessary reworks. To deal with this problem, the design team needs to know what constructability knowledge is required for specific design activities in the design process. This paper presents a constructability implementation model using the dependency structure matrix (DSM) that focuses on information flows between design activities and constructability knowledge. For this objective, design activities in the design process are modeled in a matrix form based on their dependency. Then, constructability knowledge, which needs to be considered in the design stage, is mapped into activities and incorporated into the matrix, creating Constructability-DSM (C-DSM). Next, the partitioning algorithm is applied to C-DSM for optimal information flow. The Partitioned C-DSM is then analyzed based on the relationship between activities. Finally, the optimal utilization of construction knowledge in the design process is determined by identifying what constructability knowledge is required for each design activity, and how and when it is reflected to design for constructability. Thus, this research can help provide robust control actions to reduce unnecessary iterative cycles in design process for efficient constructability implementation.

• 한국과학교육학회지
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• 제30권5호
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• pp.557-575
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• 2010

이 연구는 현재 중 고등학교에서 적용하고 있는 교수 모형을 선택할 때 그 준거로 활용할 수 있는 교수 모형의 특성과 목적을 제시하고자 수행하였다. 교수 모형의 특성과 목적은 수업 모형과 교수 모형에 관한 문헌을 분석하고, 그 결과를 근거로 정리해 제시하였다. 이 연구에서는 지금까지 제시된 수업 모형을 교수 모형에 포함시키고, 교수 모형을 전통적 모형, 과도기적 모형, 현대적 모형으로 분류하고, 현대적 모형을 다시 그 대상에 따라 개념변화 모형과 순환학습 모형으로 구분하였다. 이 논문에서 제시한 네 가지 교수모형의 특성과 목적을 요약하면 다음과 같다. $\cdot$ 전통적 모형: 강의를 통한 과학지식의 교수, 발견법을 통한 과학지식의 습득, 탐구중심 교수-학습 과정을 통한 과학적 탐구 과정 기능의 습득 및 과학적 방법과 탐구 방법을 적용한 문제해결 $\cdot$ 과도기적 모형: 시범실험, 발견법, 탐구적 접근법 을 통한 탐구 과정 기능의 습득, 과학지식의 습득과 분화 및 발달 $\cdot$ 현대적 모형 - 개념변화 모형: 탐구중심 접근법을 통한 과학지식의 분화, 과학개념에 의한 과학 대체 개념의 교환 - 순환학습 모형: 발견 및 탐구를 통한 개념의 분화 및 대체 개념의 교환, 과학적 탐구 과정 기능의 습득 이와 같은 과학 교수 모형의 영역별 특성과 목적은 교수-학습의 목표와 주제에 적절한 교수 모형의 범주를 확인할 때 적용할 수 있다. 과학 교수-학습 현장에서 실제로 적용할 교수 모형을 선정할 때는, 교수할 주제 및 내용과 그 목표에 적절한 영역별 교수 모형의 특성과 목적을 확인한 다음, 그 영역에서 적절한 교수모형을 선정하는 것이 바람직하다. 이 논문에는 실제의 교수 모형을 선정할 때 적용할 수 있는 준거가 각 교수 모형의 특성과 목적의 형태로 기술되어 있다.

• 지능정보연구
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• 제19권1호
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• pp.111-123
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• 2013

개념간의 의미적 유사도 및 관계도(Semantic Similarity/Relatedness)를 구하는 연구는 고전적인 연구에서는 데이터 베이스 통합이나 시스템 통합, 그리고 현대의 연구에 있어서는 태그 및 키워드 추출, 연관 단어 추천 등에 걸쳐 다양한 분야에서 활용되어 온 연구이다. 그 연구는 역사가 오래되었을 뿐만 아니라, 경영정보와 컴퓨터 공학, 계산 언어학에 걸쳐 여러 분야에서도 많은 관심을 가져왔던 연구 분야라고 할 수 있다. 그러나, 지금까지의 개념간의 관계도 계산 방식은 미리 만들어진 사전이나 참조할 수 있는 다른 시맨틱 네트워크(Semantic Network)를 이용하여 계산하는 방법이 주를 이루었다. 이러한 접근 방법의 경우, 개념간의 의미적 관계가 변화에 대한 가능성을 고려하지 않는 것이 일반적이다. 하지만, 정보 기술의 발달과 빠른 사회변화는 개념간의 의미관계 등에 변화를 가져오고 있는 것이 현실이다. 사회적으로 일어나는 사건이나, 문화적 변화 등이 개념간의 의미관계를 변화시키는 것을 물론이며, 이러한 변화가 정보 통신 기술의 도움으로 빠르게 공유되고 있다. 이렇게 개념간의 의미 관계가 시간이나 맥락에 따라 빠르게 변화할 수 있는 가능성이 있음에도 불구하고, 기존의 개념간 의미적 유사도 및 관계도에 대한 연구들은 이러한 '의미관계의 변화'에 대한 새로운 문제에 대해 해답을 제시하지 못한 것이 사실이다. 따라서, 본 연구에서는 개념간의 유사도 연구에 있어 지금까지 있어왔던 '정적인 의미간 관계도 패러다임'에서 '동적인 의미간 관계도 패러다임'으로의 전환의 필요성과 그 당위성을 인지 의미론적(Cognitive Semantics)의 관점에서 역설하고자 한다. 인간이 인지하는 개념간의 의미관계가 변화할 수 있는 이론적 근거를 인지 의미론에서 찾아봄으로써, 패러다임 변화의 방향을 구체적으로 제시하였다. 또한 이러한 패러다임의 변화에 맞추어 개념간의 의미적 유사도 및 관계도에 대한 연구가 어떠한 방향으로 나아가야 할지 구체적인 연구 방향을 제시함으로써 관련 연구자들에게 새로운 연구의 가이드라인을 제시하였다.

• 한국경영과학회지
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• 제23권2호
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• pp.131-156
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• 1998

Cooperative query answering is a research effort to develop a fault-tolerant and intelligent database system using the semantic knowledge base constructed from the underlying database. Such knowledge base has two aspects of usage. One is supporting the cooperative query answering Process for providing both an exact answer and neighborhood information relevant to a query. The other is supporting ongoing maintenance of the knowledge base for accommodating the changes in the knowledge content and database usage purpose. Existing studies have mostly focused on the cooperative query answering process but paid little attention on the dynamic knowledge base maintenance. This paper proposes a multi-level knowledge representation framework called Knowledge Abstraction Hierarchy (KAH) that can not only support cooperative query answering but also permit dynamic knowledge maintenance. The KAH consists of two types of knowledge abstraction hierarchies. The value abstraction hierarchy is constructed by abstract values that are hierarchically derived from specific data values in the underlying database on the basis of generalization and specialization relationships. The domain abstraction hierarchy is built on the various domains of the data values and incorporates the classification relationship between super-domains and sub-domains. On the basis of the KAH, a knowledge abstraction database is constructed on the relational data model and accommodates diverse knowledge maintenance needs and flexibly facilitates cooperative query answering. In terms of the knowledge maintenance, database operations are discussed for the cases where either the internal contents for a given KAH change or the structures of the KAH itself change. In terms of cooperative query answering, database operations are discussed for both the generalization and specialization Processes, and the conceptual query handling. A prototype system has been implemented at KAIST that demonstrates the usefulness of KAH in ordinary database application systems.

• 한국초등과학교육학회지:초등과학교육
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• 제33권3호
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• pp.566-578
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• 2014

The purpose of this study is to develop a program for elementary school students' scientific experimental design knowledge generation. This study also investigated the effects of their experimental design ability, as well as the change in the type and elaborateness of their experimental design by applying the program. The subjects of this study was 4 classes in 6th grade of an elementary school located in Seoul, KOREA. The classes were divided into experimental and comparative groups. While the treatment was applied to the experimental group, the comparative group was taught using conventional methods. The pre-test and post-test for students' capability of building scientific experimental design knowledge were conducted to compare the ability of experimental design, the change in the type and elaborateness of experimental design. The findings in this study are as follows: First, the program appeared to be effective in improving experimental design ability. Furthermore, the program appeared to be more effective in generating a higher level of the experimental design type and elaborateness. Therefore, in order to improve experimental design knowledge generation ability, the program can be utilized as effective learning model in elementary school.

• 지식경영연구
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• 제16권1호
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• pp.117-142
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• 2015

Recently, the personal cloud computing service has been being spotlighted as an individual tool of productivity enhancement. However, compared to the rosy forecast, its diffusion rate in the domestic (Korean) market is much slower than expected. In order to find the reason for the slow growth of personal cloud computing service, we attempt to identify influencing factors on user's adoption resistance, while most prior research has focused on the factors affecting its adoption. Based on both the person-technology fit model and the privacy calculus model, we propose technostress and perceived value as key antecedents of adoption resistance. In addition, we identify (1) technical (pace of change and complexity) and personal (self-efficacy) influencing factors on technostress, and (2) beneficial (perceived mobility and perceived availability) and harmful (perceived vulnerability) influencing factors on perceived value. To validate our research model, 133 individual samples were gathered from undergraduate and graduate students who had actual experience of using at least one of personal cloud computing services. The results of the structural equation modeling confirm that both technostress and perceived value have significant effects on adoption resistance, but they have different influencing mechanisms to different types of adoption resistance (indifference, postponement, and rejection). Theoretical and practical contributions are discussed in the conclusion.

• 대한안전경영과학회지
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• 제12권3호
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• pp.271-281
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• 2010

In an industrial Era, OJT(On-the-Job Training) has been accepted as the field learning. But in a breaking up era, traditional field training needs to change and make an evolutionary model. Also, we need to make evolutionary model for various changing ways and means and need means to maximize the transformation of learning by operating learning organization. In knowledge based society, as people work and learn new knowledge in order to pass the experience knowledge and capabilities, they are not the traditional relationship between trainer and trainee but maximize work and learning, development and performance through several different ways. So, the study about new learning model is needed because the learning is creating the value and makes low cost and high efficiency about the elements of cost and time. We study the evolutionary model, OJF(On-the-Job Facilitating) - new learning methodology - through operating learning organization in S Electronics and its application practices.

• 산경연구논집
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• 제11권4호
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• pp.7-18
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• 2020

Purpose: This research investigates the impact of technology adoption on organisation productivity. The framework has three independent variables viz. technological change, information technology (IT) infrastructure, and IT knowledge management and one dependent variable as organisational productivity. Research design, data and methodology: An explanatory research design with a quantitative research method was employed, and data was collected using a self-administered questionnaire using online as well as an offline survey. The sample consisted of 300 IT managers and senior-level executives (production as well as service team) in leading IT companies in Malaysia selected using snowball sampling. Normality and reliability assessment was performed in the first stage utilising SPSS 22, and Confirmatory Factory Analysis (CFA) was performed with maximum likelihood estimation to assess the internal consistency, convergent validity, and discriminant validity. Finally, Structural Equation Model (SEM) and path analysis are conducted using AMOS 22. Results: The research findings demonstrated that technological change and IT infrastructure positively and significantly impact the organisation's productivity while IT knowledge management has significant but negative impact on organizational productivity of IT companies in Malaysia. Conclusion: The research concludes that all three factors plays important role in deciding organizational producvity. Recommendations, implications, limitations and future research avenues are discussed.