문제 해결 전략을 사용하는 해결자·청취자 활동에서 내·외향성에 따른 소집단 구성의 효과

전경문,강훈식,노태희 한국과학교육학회 2003 한국과학교육학회지 Vol.23 No.1

이 연구에서는 계획과 검토 단계를 강조한 4단계 문제 해결 전략을 사용하는 해결자·청취자 활동에서 내·외향성에 따른 소집단 구성의 효과를 조사하였다. 수업 전 고등학교 이과 2학년 3개 학급(N=87)을 대상으로 내·외향성 검사를 실시한 후, 내·외향성 동질 집단과 이질 집단, 그리고 통제 집단으로 무선 배치하였다. 연구 결과, 화학 문제 해결력 검사의 점수는 두 처치 집단이 통제 집단보다 유의미하게 높았으나, 학습 곤란도와 자아효능감에서는 집단 간 유의미한 차이가 없었다. 수업 처치에 대한 인식의 하위 항목들에서는 두 처치 집단 간 유의미한 차이가 없었으나, 청취자의 역할 수행에 대한 인식, 문제 해결 전략과 해결자·청취자 활동에 대한 선호도에서 외향적이 학생의 점수가 내향적인 학생의 점수에 비해 유의미하게 높았다. In this study, the effects of grouping by extraversion and introversion in paired think-aloud problem solving using a four-stage problem-solving strategy emphasizing planning and checking stages were investigated. Prior to the instructions, the students' extraversion/introversion in three high school classes (N=87) were examined, and those classes were randomly assigned to the homogeneous, the heterogeneous, and the control groups. The test scores of the two treatment groups were significantly higher than those of the control group in the problem-solving ability. However, there were no significant differences in learning difficulty and self-efficacy. Although there were no significant differences between the scores of two treatment groups in the subcategories of the perception of treatment, the test scores of extroverts were significantly higher than those of introverts in the perception of performing listener's role, the preference to problem solving strategy, and the preference to paired think-aloud problem solving.

Two-Phase Genetic Algorithm for Solving the Paired Single Row Facility Layout Problem

Parwananta, Hutama,Maghfiroh, Meilinda F.N.,Yu, Vincent F. Korean Institute of Industrial Engineers 2013 Industrial Engineeering & Management Systems Vol.12 No.3

This paper proposes a two-phase genetic algorithm (GA) to solve the problem of obtaining an optimum configuration of a paired single row assembly line. We pair two single-row assembly lines due to the shared usage of several workstations, thus obtaining an optimum configuration by considering the material flow of the two rows simultaneously. The problem deals with assigning workstations to a sequence and selecting the best arrangement by looking at the length and width for each workstation. This can be considered as an enhancement of the single row facility layout problem (SRFLP), or the so-called paired SRFLP (PSRFLP). The objective of this PSRFLP is to find an optimal configuration that seeks to minimize the distance traveled by the material handler and even the use of the material handler itself if this is possible. Real-world applications of such a problem can be found for apparel, shoe, and other manual assembly lines. This research produces the schematic representation solution using the heuristic approach. The crossover and mutation will be utilized using the schematic representation solution to obtain the neighborhood solutions. The first phase of the GA result is recorded to get the best pair. Based on these best matched pairs, the second-phase GA can commence.

Two-Phase Genetic Algorithm for Solving the Paired Single Row Facility Layout Problem

Hutama Parwananta,Meilinda F. N. Maghfiroh,Vincent F. Yu 대한산업공학회 2013 Industrial Engineeering & Management Systems Vol.12 No.3

This paper proposes a two-phase genetic algorithm (GA) to solve the problem of obtaining an optimum configuration of a paired single row assembly line. We pair two single-row assembly lines due to the shared usage of several workstations, thus obtaining an optimum configuration by considering the material flow of the two rows simultaneously. The problem deals with assigning workstations to a sequence and selecting the best arrangement by looking at the length and width for each workstation. This can be considered as an enhancement of the single row facility layout problem (SRFLP), or the so-called paired SRFLP (PSRFLP). The objective of this PSRFLP is to find an optimal configuration that seeks to minimize the distance traveled by the material handler and even the use of the material handler itself if this is possible. Real-world applications of such a problem can be found for apparel, shoe, and other manual assembly lines. This research produces the schematic representation solution using the heuristic approach. The crossover and mutation will be utilized using the schematic representation solution to obtain the neighborhood solutions. The first phase of the GA result is recorded to get the best pair. Based on these best matched pairs, the secondphase GA can commence.

실체이원론과 김재권의 짝짓기 문제

이선형 한국분석철학회 2022 철학적 분석 Vol.- No.47

The purpose of this paper is to critically examine and evaluate Jaegwon Kim’s argument against Cartesian substance dualism. In Physicalism, or Something Near Enough, Kim argues that an immaterial soul cannot causally interact with anything, whether it is a material thing or another soul, because souls are not located in space. This is what is called “the pairing problem” or “the pairing argument.” This argument has been criticized on the ground that it implicitly presupposes reductionism about causation. However, in support of Kim, I argue that his pairing argument does not depend on reductionism in any obvious way. And I suggest one possible way of solving the pairing problem. 본 논문의 목적은 데카르트적 실체이원론을 반박하는 김재권의 짝짓기 논증을 비판적으로 고찰하고 평가하는 것이다. 김재권은 그의 저서 『물리주의』에서 데카르트의 실체이원론이 가정하는 비물리적 실체인 영혼(마음)은 전적으로 공간성을 결여하기 때문에 그 어떤 것과도 인과 관계를 맺을 수 없다는 논증을 제시한다. 이른 바, “짝짓기 문제” 또는 “짝짓기 논증”이다. 필자는 본 논문에서 짝짓기 논증이 성립하기 위해 김재권이 가정하고 있는 암묵적 가정들을 면밀히 분석하고, 인과에 관한 비환원주의적 입장에 의해 짝짓기 문제를 해결하려는 전략을 비판한다. 또한 실체이원론자의 입장에서 짝짓기 논증을 반박할 수 있는 한 가지 가능한 대안을 제시한다.

간호대학생의 액션러닝 학습법의 효과: 문제해결능력, 정보활용능력, 일상적 창의성을 중심으로

박미마,전도현 학습자중심교과교육학회 2023 학습자중심교과교육연구 Vol.23 No.24

Objectives In this study, it is important to teach nursing knowledge in order to train nurses, but it is also important for learners to find ways to acquire knowledge on their own and to be able to solve problems through daily creativity and information utilization skills. This study attempted to confirm the effects of action learning methods on problem-solving ability, information utilization ability, and everyday creativity. Methods The subjects of the study were 76 first-year students taking nursing informatics courses at a 4-year nursing school located in G Metropolitan City. This study was carried out from September 1, 2022 to October 30, 2022. with 76 nursing students assigned among 1st year students attending nursing department in G city. It was designed as a total of 6 programs through the action learning teaching learning method, and was measured using problem solving ability, information literacy ability and every creativity measurement tools. The collected data were analyzed using descriptive statistics, paired t-test and Cronbach's α coefficient using the SPSS 26.0 program. Results There was no effect on improving problem-solving ability (2.46±0.52, p=.210) and every creativity (3.75±0.48, p=.270) of nursing students after the action learning teaching learning method, but information literacy (3.72±0.47, p=.027) improved. It was effective in the sub-areas of problem-solving ability, divergent thinking (t=2.24, p=.027), execution and risk taking (t=2.24, p=.027), and the sub-area of information literacy ability(t=2.24, p=.027), information retrieval(t=2.58, p=.011) and creative flexibility (t=-2.19, p=.030), a subarea of everyday creativity. Conclusions It is necessary to develop various contents of nursing informatics classes using the action learning teaching learning method of nursing students, apply and repeat research, and verify the effectiveness of classes by applying various grades and subjects, and a longitudinal study on the effect of applying action learning classes. It is suggested that.

코닉쌍의 기하학적 불변속성에 기반한 안경 추적 기법

김헌희(Heon-Hui Kim),박현(Hyun Park),박광현(Kwang-Hyun Park) 한국HCI학회 2014 한국HCI학회 학술대회 Vol.2014 No.2

본 논문은 두 개의 타원에 대한 기하학적 해석을 토대로 3차원 공간상에 존재하는 안경에 대한 3차원 자세 추정 문제를 다룬다. 기하학적인 관점에서 하나의 안경은 두 개의 볼록다각형으로 간주될 수 있으며, 이는 다시 하나의 코닉쌍 (A pair of two conics)으로 수학적인 근사가 가능하다. 이에 본 논문은 코닉쌍 특징으로부터 3차원 자세를 결정하기 위하여 우선 코닉쌍에 대한 기하학적 불변속성을 정의하고, 이로부터 자세추정 해법을 유도한다. 제안된 방법의 유효성 검증을 위하여, 본 논문은 이미 성능이 검증된 3점기반 및 4점기반 자세추정 기법들을 도입하고, 다양한 위치 및 방향에서 수집된 샘플 영상들을 이용하여 정확도 및 정밀도 측면에서 자세추정 성능을 비교 분석한다. This paper deals with a 3D pose estimation problem with respect to a eyeglass frame in 3D space based on the geometric interpretation of a pair of two conics. From the geometric perspective of view, an eyeglass frame can be first regarded as two convex polygons, then approximated mathematically to a pair of two conics. In this paper, we define a geometric invariant of a pair of two conics to help retrieve its pose parameters, and then derive the solution of the problem. In order to verify the effectiveness of the proposed method, this paper especially employs the traditional solutions for P3P(Perspective-3-Points) and P4P(Perspective-4-Points) problems, which are compared with our solution. All the solutions are evaluated through a series of experiments to analyze the estimation performance in view of pose accuracy and precision.

짝프로그래밍 협업도구를 활용한 SW교육프로그램

김용옥,전석주 한국정보교육학회 2019 정보교육학회논문지 Vol.23 No.4

In a rapidly changing society with the Fourth Industrial Revolution, future students should have the skills to utilize and organize high-quality knowledge, not the amount of knowledge. With the launch of the revised curriculum in 2015, the curriculum has been reorganized based on competency and the software education has been seeking capabilities such as 'Cultural computing knowledge', 'Computational thinking', and 'Collaborative problem solving skills'. Therefore, practical collaboration tools and education programs that can be used in the field of education are developed based on Pair Programming, which is a specific collaborative learning strategy to develop cooperative problem solving skill. The educational program using this collaboration tool was developed with a focus on developing computational thinking and collaborative problem solving skills through Pair Programming rather than focusing on learning grammar of programming language and programming techniques. In a educational program, students will be able to use collaborative tools for pair programming and foster collaborative problem-solving skills. 4차 산업혁명에 따라 빠르게 변화되는 사회에서 미래 인재는 지식의 양이 아닌 질적으로 수준 높은 지식을 활용하고 구성하는 능력이 요구되고 있다. 2015 개정 교육과정의 출범에 따라 역량 중심으로 교육과정이 개편되었으며 소프트웨어 교육에서는 ‘정보문화소양’, ‘컴퓨팅 사고력’, ‘협력적 문제 해결력’의 역량을 추구하고 있다. 본 연구에서는 미래인재의 역량인 협력적 문제해결력을 함양하기 위해서는 교육 현장에서 교사가 손쉽게 활용 가능한 협업도구와 이를 활용한 SW교육 프로그램을 개발한다. 이러한 협업도구를 활용한 SW교육프로그램은 프로그래밍 언어와 문법에 대한 지식, 프로그래밍 기법에 대해 배우는 것보다 짝프로그래밍을 통해 컴퓨팅 사고력과 협력적 문제해결력을 함양할 수 있다. 총 16차시로 구성된 수업에서 협업도구를 활용한 짝프로그래밍을 통해 수업이 참가한 학생들의 협력적 문제해결력과 코딩 이해도를 향상시킴을 보여준다.

문헌정보학 교육에서 프로젝트 중심 학습법이 학생의 문제해결능력 및 자기주도적 학습능력 향상에 미치는 효과: 사례 연구

한승희 한국문헌정보학회 2008 한국문헌정보학회지 Vol.42 No.3

본 연구에서는 문헌정보학 교육 환경에서 프로젝트 중심 학습법을 적용하여 강의를 개발하고, 이 학습법이 문헌정보학 전공 학부생의 문제해결능력과 자기주도적 학습능력의 향상에 미치는 효과에 대해 분석하고자 하였다. 이를 위해 23명의 수강생을 대상으로 프로젝트 중심 학습을 경험하기 전과 후에 대해 동일한 검사지를 이용하여 학생의 문제해결능력과 자기주도적 학습능력에 대해 측정하였다. 그리고 사전검사와 사후검사결과의 유의성을 확인하기 위해 SPSS를 이용하여 대응표본 t-검정법으로 분석하였다. 분석 결과, 프로젝트 중심 학습법이 문헌정보학을 전공하는 학생의 문제해결능력과 자기주도적 학습능력의 향상에 큰 효과가 있음을 확인하였다. The purpose of this study is to develop a course with project-based learning method for LIS education and to examine the effects of this method on improvement of problem solving and self-directed learning ability of LIS undergraduate students. The research design was one-group pretest-posttest design in quasi-experimental research. The data were collected from 23 LIS undergraduate students and analyzed by paired t-test with SPSS. The result demonstrated that project-based learning method has an significant effect on improvement of problem solving and self-directed learning ability of LIS undergraduate students.

Recursiveness and propagation for 2-variable weighted shifts

Lee, S.H.,Yoon, J. North Holland [etc.] 2016 Linear algebra and its applications Vol.504 No.-

<P>For 1-variable weighted shifts, it is well known that given three positive numbers alpha(0) < alpha(1) < alpha(2), we always find Stampfli's subnormal weighted shift whose first three weights are alpha(0), alpha(1) and alpha(2) (we call it a type-abc completion, or shift.) On the other hand, given four positive numbers alpha(0) < alpha(1) < alpha(2), it is not always possible to find a subnormal weighted shift whose first four weights are alpha(0), alpha(1), alpha(2) and alpha(3). In this paper, we extend the notion of a type-abc shift to the 2-variable weighted shifts using a localization technique from the theory of truncated moment problems. We next study an inner propagation phenomena of a 2-variable weighted shift whose core is of type-abc. We further establish the necessary and sufficient conditions for the subnormality of one-step extensions of type-abc 2-variable weighted shifts. Finally, we study a certain invariant property under powers for type-abc 2-variable weighted shifts. (C) 2016 Elsevier Inc. All rights reserved.</P>

해결자·청취자 활동을 이용한 화학 문제 해결에서 소집단 구성 방법에 따른 효과

노태희,성을선,강훈식,정영선,강석진 한국과학교육학회 2004 한국과학교육학회지 Vol.24 No.6

이 연구에서는 해결자ㆍ청취자 활동을 이용한 화학 문제 해결에서 소집단 구성 방법에 따른 효과를 조사하였다. 서울시에 위치한 인문계 고등학교의 3개 학급을 선정하여 전통적 수업 집단, 동질적 집단 구성의 해결자ㆍ청취자 활동 수업 집단, 이질적 집단 구성의 해결자ㆍ청취자 활동 수업 집단으로 무선 배치하였다. 사전 검사로 메타인지적 기술의 사용에 대한 인식 검사를 실시하였다. 처치 집단의 학생들은 사전 성취 수준에 따라 동질적 집단과 이질적 집단으로 구성되었으며, 2명이 조를 이루어 화학 반응식과 화학 양론에 관한 문제를 해결하였다. 수업 처치 후 분석적 기술 검사, 문제 해결력 검사, 메타인 지적 기술의 사용에 대한 인식 검사를 실시하였다. 일원공변량 분석 결과, 동질적 집단 구성으로 해결자ㆍ청취자 활동을 한 수업 집단의 분석적 기술 점수가 다른 집단에 비해 통계적으로 유의미하게 높았다. 그러나 화학 문제 해결력 검사와 메타인지적 기술의 사용에 대한 인식 검사에서는 집단 간에 통계적으로 유의미한 차이가 없었다. This study investigated the effects of grouping method in solving chemistry problems using Think-Aloud Paired Problem Solving (TAPPS). Three classes (125 students) of a co-ed high school in Seoul were randomly assigned to the control, the homogeneous TAPPS, and the heterogeneous TAPPS groups. Prior to the instructions, a test of awareness of metacognition was administered. In the treatment groups, students were grouped into either homogeneous or heterogeneous group on the basis of their pre-achievement levels, and worked in pairs on chemistry problems about chemical equation and stoichiometry. Students' analytical skill, problem solving ability, and awareness of metacognition were examined after the instructions. One-way ANCOVA results indicated that the scores of the homogeneous TAPPS group in the analytical skill test were significantly higher than those of the heterogeneous TAPPS group. However, there were no significant differences among the three groups in the problem solving ability and the awareness of metacognition.