• Advances in concrete construction
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• 제11권5호
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• pp.397-407
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• 2021

This paper investigates the optimal sensor placements and capabilities of this procedure for dynamic characteristics identification of arch dams. For this purpose, a prototype arch dam is constructed in laboratory conditions. Berke arch dam located on the Ceyhan River in city of Osmaniye is one of the highest arch dam constructed in Turkey is selected for field verification. The ambient vibration tests are conducted using initial candidate sensor locations at the beginning of the study. Enhanced Frequency Domain Decomposition and Stochastic Subspace Identification methods are used to extract experimental dynamic characteristics. Then, measurements are repeated according to optimal sensor locations of the dams. These locations are specified using the Effective Independence Method. To determine the optimal sensor locations, the target mode shape matrices which are obtained from ambient vibration tests of the selected dam with a large number of accelerometers are used. The dynamic characteristics obtained from each ambient vibrations tests are compared with each other. It is concluded that the dynamic characteristics obtained from initial measurements and those obtained from a limited number of sensors are compatible with each other. This situation indicates that optimal sensor placements determined by the Effective Independence Method are useful for dynamic characteristics identification of arch dams.

• 한국과학교육학회지
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• 제20권1호
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• pp.155-165
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• 2000

이 연구는 초등학교 6학년 235명을 대상으로 학생의 정보 처리 유형과 인지 양식에 따른 과학 문제 해결 정도를 알아보는 것을 목적으로 하였다. 이 연구의 결과는 다음과 같다. 첫째, 학생들은 두 가지 정보처리 방식에서 높은 점수를 받을수록 과학 성취 문항과 창의적 문제해결 문항을 잘 해결하였다. 그리고 동시적 정보 처리 검사에서 높은 점수를 받을수록 과학개념 이해 문항을 잘 해결하였다. 둘째, 학생들이 장독립적 성향이 높을수록 과학 성취 문항과 창의적 문제해결 문항을 잘 해결하였다. 그리고 과학개념 이해 문항의 해결에서는 특히 좀 더 높은 장독립적 성향이 요구되었다. 마지막으로, 정보 처리 유형에 따른 인지 양식의 분포에 통계적으로 유의미한 차이가 있었다. 학생들이 두 가지 정보 처리 방식에서 높은 점수를 받을수록 그들의 인지 양식은 장독립적 성향이 높았다.

• 대한수학회논문집
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• 제19권4호
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• pp.765-773
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• 2004

In this paper we define the notion of asymptotically quadrant independent random field and derive the strong laws of large numbers for this random field.

• 대한가정학회지
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• 제43권4호
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• pp.161-172
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• 2005

The present study investigation the effect of a project approach program on children's cognitive styles. It examined closely the characteristics and processes of the project approach program to determine its impact on children's individual cognitive styles such as divergent thinking, field independence, and reflection. The subjects were 384-year-old children. Eighteen children were assigned to the experimental group and twenty to the control group. Pretest-treatment-posttest design was adopted for this study. Collected data were analyzed with SPSS Win 10.0 and processed statistically using average, standard deviation, and ANCOVA. For the children's divergent thinking, the children with the project approach program showed significant difference in fluency and flexibility, but no difference in originality and elaboration, compared to the children in the control group. Children with the project approach program showed more field independence than those in the control group. Children with the project approach program showed no difference in reflection. These results showed that the project approach pro!3ram partly influenced the children's cognitive styles.

• 대한기계학회논문집A
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• 제26권9호
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• pp.1727-1735
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• 2002

The usage of beam scanning type laser marker is rapidly increasing in the field of semiconductor equipment. A device called ″beam adjuster″ is employed to adjust the visible diode laser, which points the marking position for various setting. The device is very sensitive to manufacturing tolerance and assembly condition. Axiomatic approach has been applied to the design of the device. An existing design is analyzed based on the Independence Axiom. The existing design is found to violate the axiom. Two new designs are proposed to satisfy the Independence Axiom. The Information Axiom is utilized to evaluate the designs. A design is selected to have the minimum information content. The significance of this research is that a full cycle of axiomatic design is applied to a real engineering product.

• 한국문헌정보학회지
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• 제32권2호
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• pp.77-96
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• 1998

직무만족 행동은 동일한 환경조건하에서도 개인적 특성이나 성격, 인지구조에 따라서 반응이 다르게 나타난다. 이것은 개인의 심리적 차이와 관련된 문제이며, 직무만족이 주관적인 개념임을 의미한다. 이 연구는 대학도서관 사서들의 심리적 개인차 특히, 인지양식을 분석하여 보고 이것이 직무만족도에 어떠한 차이와 영향을 미치고 있는지 그 관계를 밝히는 데 목적이 있다. 데이터는 부산시내 소재하는 11개 4년제 대학도서관 사서 160명을 대상으로 조사 분석하였다. 연구의 결과, 전체적인 직무 만족도는 보통수준을 약간 상회하고 있으며 승진요인에서 가장 불만족한 것으로 나타났다. 인구적 특성에 따른 인지양식은 차이가 없으나, 직무만족도와는 유의한 차이를 나타내고 있다. 나이가 많을수록, 직위가 높을수록 만족도가 높았다. 인지양식은 직무만족도에 상당한 영향을 미치고 있다. 장독립적인 사서보다 장의존적인 사서의 만족도가 더 높은 것으로 나타났으며 매우 유의한 차이를 보이고 있다. 장독립적인 사서는 기술봉사업무에 적합하고 장의존적인 사서는 공공봉사업무에 적합한 것으로 나타났다. 결론적으로 직무만족도의 개인차를 이해하는 데에는 개인의 인지양식에 따른 심리적 개인차를 고려하는 것이 매우 중요하다는 사실을 입증하였다.

• 한국과학교육학회지
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• 제19권4호
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• pp.645-652
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• 1999

비유물의 개수, 출처 및 제시 순서가 중학생들의 과학 개념 회상 및 응용에 미치는 효과를 조사하였다. 비유물의 개수(1개/2개)와 출처(일상/과학)에 따라 네 종류의 학습 교재를 제작하여 예비 연구를 통해 수정하였다. 수업 처치 이전에 장의존성/독립성 검사를 실시하여 구획 변인으로 사용하였다. 88명의 중학생들에게 네 가지 유형의 학습 교재를 무선 배포하여 읽게 한 직후 과학 개념 회상 및 응용 검사를 실시하고, 4주 후에 개념의 파지 검사를 실시하였다. 비유물의 개수, 출처 및 제시 순서가 과학 개념 회상 및 응용에 미치는 주효과는 없었다. 파지 개념 응용 검사에서 학습자의 장의존성/독립성에 따라 비유물의 개수 및 비유물의 제시 순서가 과학 개념 회상 및 응용에 미치는 상호작용 효과가 나타났다. 즉, 장독립적인 학습자는 비유물을 한 개 사용하였을 때보다 두 개 사용하였을 때 더 높았고, 비유물을 두 개 사용할 경우 장의존적 학습자는 과학 일상 비유물의 순서보다 일상-과학 비유물의 순서로 제시했을 때 더 높았다.

• 아동학회지
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• 제9권1호
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• pp.63-80
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• 1988

The main purpose of this study was to investigate the relationships of children's creativity to field independence-dependence cognitive style and demographic variables at age 5. The subjects for the present study were 86 five-year-old boys and girls selected from two kindergartens in Seoul and their parents, who replied to the questionnaire about demographic variables. Children were tested in groups, with the Torrance tests of Creative Thinking-Figural, and individually with the Preschool Embedded Figures Test. The data were analyzed by one way ANOVA, t-test, and Pearson's product-moment correlations. Children's fluency and originality in creativity showed significant positive correlations with field dependent-independent cognitive style. There were no significant differences in creativity according to sex. There were significant differences in field dependent-independent cognitive style according to sex. The score of field independent cognitive style of boys were significantly higher than those of girls. Children's creativity showed low correlations with demographic variables.

• 아동학회지
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• 제14권1호
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• pp.77-89
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• 1993

The purpose of this study was to investigate (1) children's field dependence by age and sex, (2) children's interpersonal problem solving ability by age, sex, and contextual factors, (3) children's interpersonal problem solving ability by field dependence. The subjects were 120 five-, seven-, and nine-year-olds. Children's field-dependence was measured with the Children's Embedded Figures Test (CEFT). Children's interpersonal problem solving ability was measured with the Preschool Interpersonal Problem Solving Test (PIPS Test). Statistical methods adopted for data analysis were frequencies, percentiles, means, standard deviation, t-test, oneway ANOVA. $Scheff{\acute{e}}$ test and Pearson's correlations. Major findings were that (1) The older children were more field-independent than the younger ones (2) The older children suggested more problem solving methods and higher-level problem solving strategies than the younger ones. (3) Children suggested higher-level problem solving strategies in contexts involving familiar as opposed to unfamiliar participants and contexts involving children as opposed to adults. (4) 9-year-olds' field-independence was positively associated with interpersonal problem solving ability.

• 디지털산업정보학회논문지
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• 제4권1호
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• pp.105-117
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• 2008

T Abstract This study investigates the influence of differential factors on learner satisfaction by field-independent learning style in e-learning. Most of data were collected from students. Participants were classified based on a learning style typology (field-independent/dependent) and, then, analyzed was the influence of key factors on learner satisfaction using multiple regression analysis. This study suggests that e-Learning service providers need to differentiate learners based on learning style in order to improve learner satisfaction. Specially, Field independent learners are more likely to be satisfied by the teacher's provide degree of joyful, degree of contents, degree of learning control pacing, ability of problem solving and consistency.