• 대한수학회지
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• 제49권1호
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• pp.99-112
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• 2012

This paper attempts to present a numerical method for solving optimal control problems. The method is based upon constructing the n-th degree Jacobi polynomials to approximate the control vector and use differentiation matrix to approximate derivative term in the state system. The system dynamics are then converted into system of algebraic equations and hence the optimal control problem is reduced to constrained optimization problem. Numerical examples illustrate the robustness, accuracy and efficiency of the proposed method.

• Fashion, Industry and Education
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• 제15권1호
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• pp.59-65
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• 2017

Fashion professionals these days agree that changes in the fashion business are essential and highly value creativity as a genuine source for generating new ideas in fashion products as well as fashion business practices. As fashion professionals deal with problems of which solutions do not exist or that need innovative solutions for brand or product differentiation in the fast-paced environments, interest in creativity and creative problem solving in the field has increased; therefore, fashion educators have realized that there has been an increasing need for incorporating creativity or creative problem solving into the fashion curriculum. In this study, the researcher intended to review previous research on the use of creative problem solving in classrooms in various disciplines including the field of fashion education to provide insights and suggestions for fashion educators to integrate creative problem solving into the fashion education curriculum. Previous attempts to apply creative problem solving to solve issues in fashion classrooms have mostly limited to promoting divergent thinking techniques. It is suggested for fashion educators as well as fashion students to consider creative problem solving as a process consisting of the four distinct stages in which both divergent and convergent thinking techniques should be properly utilized stimulating various thinking strategies.

• 한국수학교육학회지시리즈C:초등수학교육
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• 제17권1호
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• pp.57-75
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• 2014

학교수학에 있어 문제해결은 오래전부터 강조되어 오고 있으며, 학생들의 문제해결력 신장을 위해 다양하고 많은 연구들이 진행되고 있다. 하지만 이러한 연구와 노력에도 불구하고 수학에 대한 학생들의 수준차는 초등학교 입학 후 얼마 지나지 않아 나타나기 시작한다. 학생들은 소극적이며 무언가에 의존하려 하며, 실패한 일에 대해서는 발전의 메커니즘을 적용하지 못하고, 문제해결의 주체는 문제를 해결하는 학생 본인이어야 함에도 불구하고 교사는 문제해결을 돕는다는 명목 하에 자꾸만 개입하게 된다. 본 연구에서는 다른 사람이나 어떤 것의 도움 없이 학생 스스로 해결하여야 한다는 것을 기본 전제로 학생중심의 문제해결 모형을 개발하고 이에 대한 효과성을 검토하고 논의함으로써 문제해결을 원하는 학생과 교사 모두에게 문제해결에 대한 새로운 접근의 필요성을 인식시키는 계기를 마련하고자 하였다.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제32권2호
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• pp.131-146
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• 2018

미분학은 적분학과 더불어 수학, 자연과학, 공학 등에서 널리 응용되는 중요한 분야이다. 도함수는 미분학의 중요 개념인데, 학생들은 이것의 개념을 제대로 파악하지 않은 채 정형화된 계산 문제를 푸는 기능 습득에만 치중하고 있어 미분에 대한 개념적 이해는 매우 빈약한 상태이다. 이에 본 연구에서는 학부 학생들을 대상으로 미분에 대한 설문조사를 실시하여, 미분학 문제를 풀 때 나타난 오류를 분석하고 도함수에 내재한 극한과정의 수학화 과정과 도함수에 대한 역사적 발달과정을 살펴보고자 한다. 이 과정을 통해 미분의 이해도를 분석하고 이에 대한 결과를 제시하고자 한다.

• 대한가정학회지
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• 제44권2호
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• pp.137-152
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• 2006

The major purpose of this study was to investigate the causal effect of the primary triad experiences on dating relationship satisfaction through self-esteem among college students. The primary triad experiences were composed of the parents' differentiation level of couple relationship and the parent-child relationship including family rule, triangulation and communication. Dating relationship satisfaction included such subscales as problem-solving communication, global satisfaction, affection communication and time together. The study data were collected from 382 college students by using self-administered questionnaire method. The results showed that parents' differentiation was positively correlated with self-esteem and all components of dating relationship satisfaction and that family rule was negatively associated only with problem-solving communication. Triangulation was negatively related with most components of dating relationship satisfaction and self-esteem, while parent-child communication showed positive correlations with the same variables. Path analysis results showed that self-esteem mediated the effect of most variables of primary triad experiences on dating relationship satisfaction. In addition, variables of the primary triad experience had direct influences on most components of dating relationship satisfaction. Self-esteem was found to be the most powerful variable influencing dating relationship satisfaction. The findings of the study were discussed in terms of pre-marital education and counseling.

• 한국학교수학회논문집
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• 제12권4호
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• pp.545-562
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• 2009

미적분은 우리 생활의 여러 방면에 활용되고 있으며, 경제학이나 행정학 등 사회과학 분야에서도 기초를 이루고 있다는 점에서 이공계에서만 중요시하게 다루어지는 것에 대한 많은 논란이 있어 왔다. 다행히 2010년부터는 일반계 고등학교 2학년 수학과 교육과정에 미적분 단원이 도입된다고 한다. 처음 미적분을 접하게 되는 학생들은 먼저 미분학습에서 흥미를 잃는다거나 미분학습에 대한 불안과 기피현상을 겪지 않도록 해야 한다. 이에 대비하기 위해 본 연구는 학생들이 교과서에서 평소 접할 수 있는 일반화된 미분문제를 중심으로 예비검사를 실시하고 전문가의 검토와 예비검사를 바탕으로 선정된 최종 검사지를 투입하여 미분 문제해결 과정에서 나타나는 오류를 분석틀에 맞게 분류 분석함으로서 미분학습 지도방안에 대한 기초자료를 마련하고자 하였다.

• 한국조리학회지
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• 제14권4호
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• pp.415-426
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• 2008

In order to cope with the severe business environment and possess the competitive advantage in the food service industry, the effect of organization culture and leadership on competitive advantage in food service companies was investigated. The friendly culture was regarded as important in relation between corporate culture and leadership. And the tendency to participate was shown to be highly correlated to leadership. Leadership and competitive advantage were influenced by the tendency to participate, differentiation and competence. The corporate culture and competitive advantage were affected by the friendly culture, differentiation and competence. Especially, the organization culture was more important than leadership. Therefore, it is necessary to execute the tendency to participate, differentiate products, service and management, and attract customers. And the maintenance of competitive power is required to develop a new product, evaluate customer satisfaction, and improve decision making, problem solving and crisis management.

• 성인간호학회지
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• 제19권4호
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• pp.624-633
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• 2007

Purpose: This study was conducted to develop an integrated undergraduate course including a PBL based on a blended learning strategy, and evaluate learners' responses. Methods: The learning contents of cardiovascular, respiratory, and musculoskeletal medical systems, and nursing diagnoses of 'activity and rest' domain (NANADA's classification II, 2005) were analyzed. Six clinical scenarios with the clients in different life cycles were developed for PBL. Classical lecture and group presentation with on-line self learning were implemented in addition to PBL. The developed course was implemented on 84 junior nursing students in a university for 7 weeks with 5 hours per day, two days per week. Students were asked to complete structured questionnaires including problem solving, critical thinking, and nursing diagnosis differentiation abilities. Results: Learner's evaluation was positive in problem solving skills and in the differentiation ability of nursing diagnoses relevant to an 'activity and rest' functional health pattern. Conclusion: Development and implementation of integrated courses based on a blended learning method need to be continued to enhance students' thinking and self-directed learning abilities. Supporting strategies for individual learners should be added for successful blended learning such as individual on-line feedback and consideration of individual learning outcomes.

• 한국가족관계학회지
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• 제23권3호
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• pp.77-104
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• 2018

Objectives: This study aimed to examine the general tendencies of women's divorce intention and to analyze the related variables that affect women's divorce intention. It would help explore the conditions for prevention or intervention of divorce. Methods: For this purpose, the structured survey was conducted by 521 married women aged between 20 and 70 living in Jeollanam-do and Gwangju. The data was analysed by SPSS 21.0 program. Results: First, the average score of divorce intention was 2.04, which was lower than the middle. The average score of self-differentiation, marital communication efficiency, reasonable coping, and social support were a bit higher than the median score. Second, the differences in the divorce intention according to the academic background and household income were statistically significant. Third, marital communication efficiency had the biggest effect on divorce intention and it was followed by avoidance-oriented behavior, reasonable coping, support from the local community, self-differentiation, and household income. Conclusion: It is very important to understand the various factors related to divorce intention especially in individual, marital, social aspects. In addition, it is actually required to develop the couple programs about coping strategies, effective couple communication and problem-solving methods. It also have to imply the requirements considering psychological, social aspects such as self-differentiation and social support.

• 한국학교수학회논문집
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• 제16권2호
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• pp.435-457
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• 2013

본 논문에서는 수시모집 입학전형에 합격한 대학 입학예정자를 대상으로 P대학에서 시행하고 있는 기초수학 특강에서 학습지도 자료로 활용하기 위하여 실시하는 기초수학 진단평가에서의 사전 검사를 통해 함수, 함수의 연속 및 미분가능에 대한 기초개념을 어느 정도 이해하고 있는지와 어떤 오류를 범하고 있는지를 분석하였다. 또한, 기초수학 특강 최종평가에서의 사후 검사를 통해 기초개념 이해에 대한 오류유형은 어떻게 변화되었는지 살펴보고자 하였다. 여기서, 우리는 연구대상 학생 전체에 대한 오류유형의 변화는 물론, 각 검사문항에 대한 동일 학생의 오류유형이 구체적으로 어떻게 변화되었는지도 분석하였다.