• 한국수학교육학회지시리즈C:초등수학교육
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• 제12권2호
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• pp.133-143
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• 2009

통계는 삶의 문제에서 출발하여 주어진 문제를 해결하기 위해 통계문제로 번안되고, 자료가 정의되고 수집되어 적절하게 통계를 활용하여 원문제의 해결을 해야 한다. 그러므로 통계교육은 이러한 연장선상에서 유기적이고 체계적으로 이루어져야 한다. 이 논문에서는 초등 통계 영역이 가지는 문제점들로 교육과정상의 문제점, 교과서 구성 측면에서의 문제점, 수업 운영의 문제점, 실생활과의 연계 부족, 다른 영역과의 연계성의 문제, 통계에 대한 인식의 문제 등을 살펴보았다. 이러한 문제점의 해결방안에 대해 탐구하여 초등통계교육의 개선을 위한 시사점을 제공하는데 그 목적이 있다.

• Journal of Preventive Medicine and Public Health
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• 제45권1호
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• pp.29-36
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• 2012

Objectives: The purpose of this study was to identify any influence of socioeconomic status on smoking and smoking cessation in a situation where genetic factors are controlled. Methods: The sample for this study was 2502 members of the twins and families cohort who participated in the Korean Healthy Twins Study from 2005 to 2009. Groups of brothers or sisters, including twins and fraternal twins, were compared in terms of smoking and smoking cessation behaviors according to differences in socioeconomic status and gender. Results: In a situation with complete control of genetic factors, results showed that the daily smoking amount, cumulative smoking amount, and dependence on nicotine decreased with higher-status occupations, and the rate of smoking and amount of cumulative smoking decreased with higher levels of education. Regarding smoking cessation behavior, a higher level of education was associated with a lower smoking cessation rate, and no significant gender differences were found. Conclusions: Environmental factors had a stronger influence on smoking behavior than did genetic factors. Genetic factors had greater influence on smoking cessation than did environmental factors; however, this requires verification in further studies.

• 한국과학교육학회지
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• 제40권5호
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• pp.503-514
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• 2020

성취 정서가 학생들의 성취 활동 및 결과와 직접으로 연관된 정서라는 점에서, 코로나 19로 인한 이러닝 수업의 확대와 같은 급격한 교육환경의 변화는 필연적으로 학생들의 성취 정서에 많은 영향을 줄 수 있다. 그러나 이에 대한 연구는 아직 부족한 실정이며, 이러닝 수업환경에서 학생들의 성취 정서를 정량적으로 측정할 수 있는 질문지의 개발은 관련 연구의 바탕이 될 수 있기에 본 연구에서는 이러닝 수업에서의 한국 중학생 과학영역 성취 정서 질문지(e-AEQ-KMS)를 타당화 과정을 거쳐 개발하였다. 본 연구에서 개발한 e-AEQ-KMS는 한국 중학생의 과학영역 성취 정서 질문지(AEQ-KMS)을 바탕으로 이러닝 과학 수업의 특징을 반영하여 개발되었다. 수업상황, 학습상황, 시험상황 등의 3가지 학업 상황에서 즐거움, 희망, 자부심, 안도감, 화, 불안, 지루함, 절망감, 수치심 등의 9가지 성취 정서를 측정할 수 있도록 구성되어 있으며 총 226문항이다. 내적, 외적 타당도를 검증한 결과, 질문지를 구성하는 각 문항은 높은 신뢰도를 보였으며 4가지 구성요인에 대한 확인적 요인분석(CFA)결과, 성취 정서가 정의적, 인지적, 동기적, 생리적이라고 하는 4개의 구성요인으로 이루어졌다고 가정한 모형이 그렇지 않다고 가정한 모형보다 더 타당하다는 결과를 얻었다. 성취 정서 사이의 상관분석을 통하여 각각의 성취 정서가 잘 변별됨을 확인하였고, 3가지 학업 상황 및 9가지 성취 정서의 잠재적 관계에 대해 확인적 요인분석(CFA)결과, 질문지에 반영된 모형이 가장 적합도가 높은 것으로 확인되었다. 통제-가치평가, 학습전략, 성취목표, 과학성적을 준거 변인으로 한 외적 타당도 검증 결과, 모든 준거 변인에 대하여 선행 연구와 동일한 결과를 보였으며 이를 통해 충분한 외적 타당도를 가짐을 확인하였다. 본 연구 결과는 이러닝 수업에서 한국 중학생들의 과학영역 성취 정서를 정량적으로 비교분석할 수 있는 틀을 마련했다는 점에서 큰 의의가 있다.

• 해양환경안전학회지
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• 제26권6호
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• pp.644-655
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• 2020

본 연구는 항해사가 근접상황에서 심리적 충돌의 두려움으로 당황하여 규정된 충돌 회피조치를 수행하지 못하는 인적오류 상황을 연구하였다. 연구 목적은 선박 간 근접상황에서 항해사의 인적특성 요인인 승선경력, 면허등급, 연령요인이 충돌위험도에 미치는 영향을 규명하는 것이다. 본선과 상대선박 간 네 가지 대표적인 근접상황의 충돌침로에서 항해사가 지각한 충돌위험도 값을 측정, 정량화된 데이터를 얻기 위하여 시뮬레이터를 이용하여 충돌위험도 측정실험을 설계하고 두 척의 선박이 거리 2.5해리에서 충돌상황까지 상호 10노트의 속도로 접근할 때 본선의 30명의 항해사의 심장박동변이를 측정하여 항해사가 지각한 충돌위험도 측정데이터를 확보하였다. 측정값에 대한 다중회귀분석 결과 항해사의 승선경력과 면허등급 요인은 충돌위험도에 부(-)의 영향을 미쳤고, 연령은 영향을 미치지 않았다. t-검정 결과 승선경력≤4년인 항해사는 승선경력≥5년인 항해사 보다 충돌위험도 값이 유의미하게 높았고 면허등급 요인은 4 ~ 6급 그룹이 2 ~ 3급 그룹보다 충돌위험도 값이 유의미하게 높게 나타났다. 본 연구결과는 충돌위험경보시스템 개발에 적용될 수 있을 것이다.

• 대한지역사회영양학회지
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• 제6권3호
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• pp.371-379
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• 2001

The present study was conducted to determine whether the food shortage situation in North Korea has affected its people differentially according to social class. We performed a literature search on North Korean books and documents on food and nutrition. We also conducted a mail survey on North Korean defectors to estimate the energy and nutrient intake and the practice of foraging for wild foods at the time of food crisis in North Korea. The subjects were 150 adults, 104 men and 46 women, aged 20 years and older, who resettled in the South Korea after the food crisis. The mean energy intakes for men and women were estimated to be 1,260 kcal and 980.6 kcal, respectively, which were far less than 2,900 kcal and 2,600 kcal, the intake levels recommended for North Korean men and women, respectively. Thirty seven percent of the subjects reported a lack of foods adequate enough for work and other daily activities, and fifty seven percent reported a routine use of wild foods such as roots, grass, stalks, and tree bark with an average of 4 items per day. Food consumption patterns on a typical day were different by social classes with the high class people consuming an affluent diet in the midst of a severe food shortage.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 2004년도 춘계공동학술대회 논문집
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• pp.52-55
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• 2004

VMS (virtual manufacturing system) may be defined as a transparent interface/control mechanism to support human decision-making via simulation and monitoring of real operating situation through modeling of all activities in RMS (real manufacturing system). The three main layers in VMS are business process layer, manufacturing execution layer, and facility operation layer, and each layer is represented by a specific software system having its own input modeler module. The current version of these input modelers has been implemented based on its own 'local' framework, and as a result, there are no information sharing mechanism, nor a common user view among them. Proposed in this paper is a unified modeler framework covering the three VMS layers, in which the concept of PPR (product-process-resource) model is employed as a common semantics framework and a 2D graphic network model is used as a syntax framework. For this purpose, abstract class PPRObject and GraphicObject are defined and then a subclass is inherited from the abstract class for each application layer. This feature would make it easier to develop and maintain the individual software systems. For information sharing, XML is used as a common data format.

• 복식문화연구
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• 제18권3호
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• pp.550-558
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• 2010

Russian Constructivism, which took the lead in the Russian trend of art until the late 1920's, was influenced by European Cubism and Futurism. Breaking away from the previous realistic tendency, Russian Constructivism, to meet the ideology of the revolution, insisted the "Art into Street" and the "Art in Industry" with its abstract and geometric design. Russian Constructivism effected paintings of mid 1920's, as well as Industrial design and costume design. This operated remarkable changes in Russian form of costume and textile area. An unusual situation like revolution had provided the social justification to develop a new costume design not for the special class of people, but for the general public. In this atmosphere, the plan of clothing mass production began to progress. Although the Russian Constructivism costume of arts shows the similarity in the trend of fashion and the physical forms of those days, its fundamental idea in manufacturing costumes was 'to create costumes to be possible to mass-produce and to be wearable to anyone regardless of the social class'. Therefore, Constructivism costume of arts pursued dynamism and geometric form through non-objective design that has broken away from the handcrafted and traditional standards of the past. These distinct characteristics served as a momentum to seek costume design based on productivity and functionality.

• 지역사회간호학회지
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• 제18권1호
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• pp.156-164
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• 2007

Purpose: This study was to investigate adequate strategies of PBL in community health nursing for learning in the real community situation. Method: Data were collected in a PBL class of 14 third-year students who solved problems and assessed PBL in community health nursing related to visiting nursing and chronic diseases. Results: The students guessed situations diversely, chose learning issues widely and mapped the learning concepts specifically. In the assessment of the presentation, the peers of the same group gave the highest score $29.00{\pm}3.36$, the tutor lowest score $22.83{\pm}5.15$. In 5-point Likerts scale, the group dynamic was highest ($4.18{\pm}.61$) and the presentation was lowest ($3.59{\pm}.84$). Conclusion: The group needs to include students who have experiences in the practice at the health centers. The PBL class should be managed by the block system along with the conventional learning. Students needs to practice the self-directed learning and the presentation in a first semester and then PBL. The introduction of community health nursing begins with the conventional lecture and the programs on life circle and health centers through PBL in the comprehensive curriculums.

• 영어어문교육
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• 제12권4호
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• pp.185-210
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• 2006

This study has two purposes. First, it aims to suggest an appropriate approach to English writing education for Korean high school students in a cooperative learning situation. It also aims to suggest what type of learner grouping, either homogeneous or heterogeneous, is appropriate by comparing the learners' writing abilities and the changes of their affective factors after being exposed to cooperative EFL writing instruction. Two homogeneous classes were selected and instructed to write in English for 11 weeks. One was composed of homogeneous small groups based on the students' writing scores, and the other was composed of heterogeneous small groups, again based on the students' writing scores. The results showed that the improvement between the two class types was quite different across different proficiency levels. For example, although there is little difference between the homogeneous and the heterogeneous classes of low and intermediate-level learners in writing ability improvement, high-level students showed a significant difference between the classes. In addition, it was found that class participation correlated significantly to writing ability improvement. Cooperative learning was proved to be an effective writing instructional approach to encourage learners' interest and increase their self-confidence; however, the results did not show any significant differences in learners' affective domain between the homogeneous and the heterogeneous classes. Similarly, the learners' grouping preference was not affected by the grouping method.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제4권1호
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• pp.1-22
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• 2000

The purpose of this study was to investigate the effects of using graphing calculators on students' understanding of the linear and quadratic function concepts. The populators of this study are tenth graders at high school in Seoul, one class for the treatment group and another class for the comparison group, and experiment period is 14 weeks including two weeks for school regular exams.Function tests used in the study was proposed which described a conceptual knowledge of functions in terms of the following components: a) Conceptual understanding, b) Interpreting a function in terms of a verbal experission, c) Translating between different representations of functions, and d) Mathematical modeling a real-world situation using functions. Even though the group test means of the individual components of conceptual understanding, interpreting, translating, mathematical modeling did not differ significantly, there is evidence that the two groups differed in their performance on conceptual understanding. It was shown that students learned algebra using graphing calculators view graphs more globally. The attitude survey assessed students' attitudes and perceptions about the value of mathematics, the usefulness of graphs in mathematics, mathematical confidence, mathematics anxiety, and their feelings about calculators. The overall t-test was not statistically significant, but the students in the treatment group showed significantly different levels of anxiety toward mathematics.