• 한국초등과학교육학회지:초등과학교육
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• 제27권4호
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• pp.356-370
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• 2008

The study aims to explore sequence of earth science content in elementary school science curriculum in Korea and the U.S.. The analysis is focused on a) general content structure of earth science part; b) concept relationship between grades in the specific field of 'geology'; c) longitudinal connection of concepts and content in 'geology.' The findings are as follows. First, earth science curriculum content in Korea is structured according to sub-scientific disciplines centering on not science concepts but topics or inquiry activities whereas the U.S. curricular content is organized through integrative earth science topics with basic concepts and sub-concepts. Second, it is a common feature that basic concepts are interrelated to sub-concepts in all grades in both countries. However, basic concepts are scattered all over the grades, presented in a linear pattern in Korea while those are provided together in 3rd grade and repeated with extended concepts in a spiral structure in the U.S.. Last, it is not clear how concepts and content are longitudinally connected between grades in Korean curriculum. On the contrary, concepts and content in the U.S. curriculum have a strong longitudinal connection between grades with conceptual hierarchy. Such results indicate that Korean elementary school science curriculum would limit students' comprehensive understanding of science concepts through grades. The study suggests Korean science content should strengthen interrelationship among concepts as well as longitudinal connection between grades, in order to achieve the ultimate goal of science education, 'scientific literacy'.

• 호남수학학술지
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• 제42권2호
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• pp.345-358
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• 2020

In this paper, we study the concepts of Wijsman lacunary invariant convergence, Wijsman lacunary invariant statistical convergence, Wijsman lacunary ${\mathcal{I}}_2$-invariant convergence (${\mathcal{I}}^{{\sigma}{\theta}}_{W_2}$), Wijsman lacunary ${\mathcal{I}}^*_2$-invariant convergence (${\mathcal{I}}^{\ast}^{{\sigma}{\theta}}_{W_2}$), Wijsman p-strongly lacunary invariant convergence ([W₂N_σθ]_p) of double sequence of sets and investigate the relationships among Wijsman lacunary invariant convergence, [W₂N_σθ]_p, ${\mathcal{I}}^{{\sigma}{\theta}}_{W_2}$ and ${\mathcal{I}}^{\ast}^{{\sigma}{\theta}}_{W_2}$. Also, we introduce the concepts of ${\mathcal{I}}^{{\sigma}{\theta}}_{W_2}$-Cauchy double sequence and ${\mathcal{I}}^{\ast}^{{\sigma}{\theta}}_{W_2}$-Cauchy double sequence of sets.

• 호남수학학술지
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• 제45권2호
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• pp.215-230
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• 2023

In this article, generalized Sasakian space forms are investigated on W₀ -curvature tensor. Characterizations of generalized Sasakian space forms are obtained on W₀-curvature tensor. Special curvature conditions established with the help of Riemann, Ricci, concircular, projective curvature tensors are discussed on W₀-curvature tensor. With the help of these curvature conditions, important characterizations of generalized Sasakian space forms are obtained. In addition, the concepts of W₀-pseudosymmetry and W₀ -Ricci pseudosymmetry are defined and the behavior according to these concepts for the generalized Sasakian space form is examined.

• 충청수학회지
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• 제27권1호
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• pp.47-56
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• 2014

In this paper, we introduce and study the concepts of weak $C^f_k$-spaces for maps which are generalized concepts of $C^f_k$-spaces for maps, and introduce the dual concepts of weak $C^f_k$-spaces for maps and obtain some dual results.

• 한국의류학회지
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• 제38권4호
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• pp.495-505
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• 2014

This study investigated the type of fashion brand concepts and derived the components of fashion brand concepts. A total of 125 brand concept texts of women's wear brands were collected from "2012/2013 Korea Fashion Brand Annual" (S. M. Kim, 2012). A qualitative research method was employed. To investigate the types of fashion brand concepts, the texts were classified into three types such as functional, symbolic, and experiential concepts, and four complex types such as functional/symbolic, functional/experiential, symbolic/experiential, and functional/symbolic/experiential concepts. Open coding and axial coding provided the components of fashion brand concepts. The results were as follows. First, an investigation of the types of fashion brand concepts indicated differences in the types of fashion brand concepts and the types of general product brand concepts. One content of a fashion brand concept could be interpreted as more than two concept types; consequently, many fashion brand concepts did not fit the notion of the types of general product brand concept. Most fashion brand concepts simultaneously encompassed more than two types of brand concepts at once. Second, the components of fashion brand concepts consisted of 55 subjects, 7 sub-categories (physical/intrinsic product characteristics, symbolic/conceptual product characteristics, target demographics, target consumer behavior, brand capability, brand values, and brand management/marketing) and 3 categories (product, target consumer, and brand).

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제37권3호
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• pp.443-465
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• 2023

2015 개정 수학과 교육과정에서는 <인공지능 수학> 과목이 신설되었으며, 행렬과 공간벡터 내용은 2015 개정 수학과 교육과정에서 <고급 수학>을 제외하고는 <인공지능 수학>에만 등장하는 일시적이면서도 특별한 상황에 놓여있다. 본 연구는 2015 개정 수학과 교육과정에 따라 5종으로 출판된 <인공지능 수학> 교과서의 자료의 표현, 자료의 분류, 자료의 처리 단원에서 인공지능을 이해하는데 필수적인 수학 개념이자 관련 학습 요소인 행렬과 벡터에 대한 정의와 관련 하위 개념들이 어떻게 구현되고 있는지를 파악하고, 유사한 개념이 다루어지는 타 교과목과의 연결성을 분석하였다. 그 결과, 행렬의 경우 기본 개념 제시에는 큰 차이가 없었으나 교과서별로 이미지 자료를 처리하는 데 있어 활용한 행렬의 하부 개념 유형이나 이용한 행렬의 연산에는 다소 차이가 있음이 확인되었다. 벡터의 정의와 하부 개념과 관련된 내용은 교과서별로 상이하였고, 벡터의 활용을 전개하는 데에 있어 벡터의 크기, 두 벡터 사이의 거리나 벡터의 내적에 대한 맥락의 수준 및 수학적인 해석에는 차이가 있었다. 이를 통해 벡터와 관련된 개념을 수학 교과의 연계성에 치중하여 설명한 교과서와 수학적 개념과 원리보다는 인공지능과 관련한 지식 학습에 초점을 맞춘 교과서가 식별되었다. 결과를 바탕으로 교육과정과 교과서 개발을 위한 시사점을 제시하였다.

• 재활간호학회지
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• 제5권2호
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• pp.145-155
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• 2002

Purpose: This study tries to analyze the differences of memory performance and the metamemory of the elderly women according to degree of depression. And also it attempts to find the correlations among the sub-concepts of metamemory which have close relationships to the memory performance followed by the depression. Methods: The subjects of this study are 60 the elderly women who are older than sixty years in Busan city, Korea. We use the MIA(Dixon, et al., 1988) to measure metamemory and measure the memory performances such as the immeadiate word recall, the delayed word recall, the word recognition task, and face recognition. Results: 1. The average point of deprssed elderly womens' metamemory was significantly lower than non-depressed womens' point(t=10.86 p<.0017). Looking into subconcept of metamemory, depressed elderly womens' strategy, capacity, change, achievement point were significantly lower than non-depressed women. 2. In terms of immediate word recall and delayed word recall performances, depressed elderly women are significantly lower than non-depressed elderly women. 3. The degree of depressed elderly womens' metamemory(strategy, achievement, change, capacity) has significant correlations with immediate word recall performances. Conclusion: Metamemory has close relationship with the memory performance of elderly women. And also depressed elderly's sub-concepts of metamemory which have influences on their memory performance are different from non-depressed elderly's sub-concepts. Therefore, when we try to develop some programs to prevent memory decrease of elderly women, we should take these point into consideration.

• 대한인간공학회지
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• 제31권2호
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• pp.299-308
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• 2012

Objective: This study presents the conceptual framework and the conceptual model to account for user experience by expanding the existing concepts of usability, in particular considering the user-interface environment in digital convergence. Background: To better understand a variety of users interacting with a converged product based on digital technologies, there seems to be a limit to consider the existing concepts of usability. All possible aspects of user's interaction with a product in a context of use need to be taken into consideration. Method: This study identifies the concept of user experience through a comprehensive literature review. Results: First, this study reviews the existing concepts of usability and user experience. And then this study describes four main components in the conceptual framework of user experience: user's internal states, user's external states, a product, and various outcomes, each of which encompasses distinct sub-components. The conceptual model of user experience accounts for how user's internal states change over time and for how different sub-components affect actual behavior of use. Conclusion: It is expected that these user experience concepts can be used in basic resources to better understand different behavioral characteristics of users and to better design interactive products in converged digital environments.

• 디지털융복합연구
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• 제18권6호
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• pp.501-511
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• 2020

본 연구는 사회복지사 226명을 대상으로 감정노동과 직무스트레스 및 직무성과의 관계를 살펴보았으며 주요 결과를 제시하면 다음과 같다. 첫째, 감정노동 하위개념인 감정표현에 대한 주의 정도는 직무스트레스 하위 개념인 역할갈등에 정적 영향을 미쳤고, 감정적 부조화는 역할과다와 역할갈등에 정적 영향을 미친 것으로 나타났다. 둘째, 감정노동의 하위개념인 감정표현에 대한 주의 정도, 감정적 부조화, 감정노동 빈도 모두는 직무성과 하위개념인 역할과다, 역할갈등, 직무모호성 모두에 통계적으로 유의한 영향을 미치지 못하였다. 셋째, 직무스트레스의 하위개념인 역할과다와 역할갈등은 직무성과의 하위개념인 역할 내 성과와 역할 외 성과 모두에 통계적으로 유의한 부적 영향을 미치는 것으로 나타났다.

• 호남수학학술지
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• 제37권4호
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• pp.513-527
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• 2015

In this paper, we first introduce and study new concepts of ($k_1,{\cdots},k_n$)-convexity and k-segment. Secondly, we shall discuss some properties of nonisotropically starlike domains in $\mathbb{R}^n$ with respect to the origin.