• 한국수학교육학회지시리즈A:수학교육
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• 제50권2호
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• pp.185-212
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• 2011

The purpose of this study is to analyze whether spreadsheet-used instruction can improve statistical thinking ability and attitude and also to identify what characteristics of statistical thinking is constructed. For this study, a subject of 2 classes were randomly selected among the 12 classes of the 11th grader in D high school and designated one class as the experimental group and the other class as the control group. Eight hours of the spread sheet-used instruction and the traditional textbook-oriented instruction had been carried out in each class. The research findings are as follows. First, the spread sheet-used instruction is shown to be more effective in enhancing statistical thinking than the traditional textbook-oriented instruction. Second, the spread sheet-used instruction is shown to be more effective in improving statistical attitude than the traditional textbook-oriented instruction. Third, students have shown the various characteristics of statistical thinking in the data descriptive process, data arrange-summary process, data representing process, and data analying process through the spread sheet-used instructions. Hence, the spread sheet-used instruction is recommended in teaching statistics.

• 산업경영시스템학회지
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• 제17권32호
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• pp.127-135
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• 1994

Most of companies, whether they are big or not, want to analyze their business results of some periods. For this, it's common for small and medium companies which don't have ability to do it to invite experts from outside. In this paper, we have developed a computer programming techniques which can provide easy access and save labour using spread sheet utility.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2014년도 추계 학술논문 발표대회
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• pp.163-164
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• 2014

This study is conducted for prevent spread of penetration water and water leakage through non-woven fabric between PVC sheet and PVC sheet in the PVC composite waterproofing sheet of a multi-layer structure. For this, carry out absorption amount test to confirm spread resistance performance after manufacturing PVC composite waterproofing sheet of a multi-layer structure using water-repellency processed non-woven fabric. As a result of test, weight of water-repellency processed non-woven fabric increased to 1.178g, Compared with beginning and there are not penetration water.

• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 1996년도 춘계학술대회
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• pp.22-22
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• 1996

• Journal of the Optical Society of Korea
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• 제13권1호
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• pp.152-157
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• 2009

The structure of the prism sheet and the reflective polarizer sheet in the direct - illumination liquid crystal display (LCD) backlight is optimized and fabricated. The apex angle of the prism sheet was changed from 90 degree to 96.5 and 101.5 degree and the angular spread of the diffuser films attached on the reflective polarizer sheet was changed from 7 to 1.5 degrees. The measured view angle, the normal luminance, and the contrast ratio from the optimized backlight unit showed improved optical performances.

• 정보교육학회논문지
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• 제7권3호
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• pp.285-298
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• 2003

2001년 교육부, 초 중등학교 정보 통신 기술 교육 운영지침 해설서에 따르면 교과에서의 스프레드시트의 활용에 대해 수학 교과 이외에 과학, 실과, 도덕, 체육, 사회에서 활용 가능한 프로그램으로 제시하고 있다. 그러나, 기존의 스프레드시트는 아동들이 사용하기에는 다소 불편하다. 아동들은 복잡한 함수식을 어려워하며, 복잡한 메뉴들이 교과학습에 활용될 때는 학습목표달성에 오히려 방해가 된다. 또한 구이 측면에서 볼 때 아동들이 직관적으로 보고 느낀 대로 프로그램을 활용하기에는 어려움이 있다. 본 논문에서는 초등학생의 확률 및 통계부분 지원을 위한 스프레드시트를 연구하였다.

• 한국표면공학회지
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• 제22권2호
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• pp.47-54
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• 1989

The effects of intermetallic compound growt on the sheet resistance and soldreability as functions of the aging time, the temperature, and the conditions of substrates have been investi-gated in the electroplallic compound (mainy Cu6Sn5and Ni3Sn4) and the number of phase interface increased, the sheet resistance increased. Spread tests showed that the solderability was dereased with the intermetallic compounds growth and increased with the thickness of electroplated Sn. The surface morphology or agin size of the compound layer singificantly affect the solderability. The solderability of Sn/Ni system was superiot to Sn/Ni system was sperior to that of Sn/Cu system and the intermetallic compounds growth was solwer in the former system.

• 한국지진공학회:학술대회논문집
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• 한국지진공학회 2006년도 학술발표회 논문집
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• pp.159-167
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• 2006

Every structure has the expected life span of its own and it has to be rebuilt. New buildings were preferred and put value a quantitative spread of apartment houses because of the rapid growth of national economy. Therefore, the apartment houses were not taken into consideration about maintenances. Carbon fiber sheet is widely used to strengthen old structural members but it is very rarely applied to a construction field for apartment houses. The purpose of this study is to develop effective strengthening methods for reinforced concrete columns using carbon fiber sheets. Eight reinforced concrete column specimens confined by carbon fiber sheet of uniaxial direction were tested using 10,000kN universal testing machine (UTM).

• 한국화재소방학회논문지
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• 제11권3호
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• pp.3-14
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• 1997

An experimental investigation of smoke spread in a corridor is made using thermocouples and visualization technique with a laser beam sheet. A speed of smoke front under a ceiling is measured by thermocouple trees. Visualization of the ceiling jet formation and of smoke filling process is carried out to observe lowering of the smoke layer. From the results, a large-scale convective motion the corridor plays dominant roles for smoke spread from visualized photos together with temperature records. A circulating motion of fluid transports some smokes to some regions where its momentum is effective. It is therefore showed that the conventional concept of lowering smoke with two-layer zone model has some restrictions for the corridor because the lowering of smoke layer has been thought to be mass transport due to relatively small scale motion such as decrease of buoyancy, mass diffusion and momentum exchange.

• 컴퓨터교육학회논문지
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• 제3권2호
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• pp.59-66
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• 2000

본 논문은 새로운 교육사조로서 현재 교육 현장에 많이 시도되고 있는 구성주의의 학습 모델 중의 하나인 인지적 도제 모델을 적용하여 교사들의 정보화 소양을 높이는 데 꼭 필요한 스프레드시트 프로그램 중에서 가장 많이 사용되는 엑셀2000의 WBI를 설계하고 구현하였다. 인지적 도제 모델의 과정에 따라 학습과정을 설계하고 구성하였으며 학습은 상황에 기초하여 일어난다는 구성주의의 학습 원리에 따라 실무적인 내용을 택하고 가장 효과적인 사회적 상호작용을 위하여 교수-학습이 개별적으로 이루어지도록 하였고, 게시판이나 전자우편, 대화실 등을 통하여 교수자와 학습자 및 학습자 상호간의 상호작용이 원활히 되도록 설계하고 구현하였다.