• 한국전산구조공학회:학술대회논문집
• /
• 한국전산구조공학회 2007년도 정기 학술대회 논문집
• /
• pp.176-181
• /
• 2007

The widespread of IT technology caused a remarkable change in many industries and the construction industry is also one of them being influenced in the form of CIC(Computer Integrated Construction) and BIM(Building Information Modeling). Construction projects have many participants from various disciplines involved throughout the entire process. Therefore the success of the project greatly depend on the efficiency of decision-making using the information generated from each process stage. Looking from this aspect, the greatest potential value lies in the planning and pre-design stage when considering the construction life cycle. In this paper, we propose a project on developing a 3D object oriented simulation system for supporting the pre design phase. We define the needs for such system through previous case studies and suggest a to be process model. Finally we anticipate the effects that the project will eventually contribute to the construction industry.

• 정보교육학회논문지
• /
• 제21권3호
• /
• pp.351-360
• /
• 2017

본 연구는 디자인 사고를 적용한 SW교육이 초등학교 예비교사의 창의성에 미치는 효과를 분석하였다. 제주 소재 한 대학교 초등컴퓨터교육 강좌를 신청한 학부 1학년 22명의 초등학교 예비교사들을 대상으로 연구를 실시하였다. 연구대상인 예비교사들은 SW교육에 대한 기본적인 이해를 하지 못하고 있을 뿐만 아니라 연구에 사용할 EPL 도구인 스크래치 프로그램에 대한 기초적인 지식을 갖추지 못하였다. 따라서 창의성 사전검사 이전에 18차시에 걸쳐 SW교육에 대한 기본 교육과 스크래치 프로그램의 기본 기능을 학습하는 시간을 가졌다. 창의성 사전검사를 실시하고 21시간에 걸쳐 디자인 사고를 적용한 SW교육을 진행한 후 창의성 사후검사를 실시하였다. 창의성 검사도구로는 Torrance의 TTCT 도형 검사지 A, B형을 사용하여 분석하였다. 검증 결과, 디자인 사고를 적용한 SW교육이 초등학교 예비교사들의 창의성 향상에 효과적인 것으로 나타났다.

• 시스템엔지니어링워크숍
• /
• 통권6호
• /
• pp.81-85
• /
• 2005

• 한국초등과학교육학회지:초등과학교육
• /
• 제36권3호
• /
• pp.219-226
• /
• 2017

In this study, the reliability and validity of the retrospective pre-post test were analyzed in order to solve the problem of traditional pre-post test including response shift bias. Samples of the study were 162 elementary school students who are studying at the S university gifted education center in Seoul. Before completion of the field trip, we conducted pre test of science-related attitudes. After completion of the field trip, respondents were asked to compare their responses of pre and post science-related attitudes to quantitatively analyze the commonalities and differences of the two tests. To find out more characteristics, qualitative data such as daily records and interview were also gathered and analyzed. The major results of the study are as follows. First, for the paired t-test, there was no statistically significant difference between separate pre-test scores and retrospective pre-test. There was a very high correlation between the separate pre-test scores and the retrospective pre-test. Second, there were significant differences in all seven sub-factors of science-related attitudes between the retrospective pre-test and the post-test. Third, the separate pre-test scores showed a slightly higher tendency than the retrospective pre-test scores. This suggests that the response shift bias appears when it is performed the separate pre-test in affective domain. As a result of the interview, it was found that the evaluation standards of separate pre-test did not match with those of post-test. Forth, internal consistency reliability of the retrospective pre-test was higher than that of the separate pre-test. However, there were significant differences in six factors of science-related attitudes excluding the 'social implications of science' between the separate pre-test and the post-test. Based on these results, the retrospective pre-post test design provides simplicity and convenience to both respondents and investigators, as it is done with one test. The retrospective pre-post test design can be regarded as a valid design for the self-report measurement of affective domain on a single experimental group.

• Journal of Biosystems Engineering
• /
• 제35권6호
• /
• pp.393-400
• /
• 2010

Uniform and rapid pre-drying of mandarin is important to improve the storage quality. The aim of this study was to suggest the basic design of forced ventilated pre-drying facility for mandarin by thermal flow analysis using computational fluid dynamics software (FLUENT 6.2). Developed CFD simulation model was verified by comparison with experimental data. Airflows and temperature distributions in the five conceptional designs including existing ordinary temperature storage rooms were analyzed and appropriate basic design was determined. Analysis of the effect of arrangement of windows and exhaust fans on thermal flow in facility was carried out for more detailed design. The results of this investigation showed that the predicted airflow velocity by CFD simulation showed a good agreement with the measured value and optimum design condition for simulated forced ventilated pre-drying facility of mandarin has two exhaust fans and two windows on both sidewalls and cover on loaded mandarin.

• 한국의상디자인학회지
• /
• 제17권2호
• /
• pp.45-61
• /
• 2015

In order to analysis on color difference of natural dyes, I have dyed Hanji, cotton, silk fabric and exposed them to carbon arc light. The results of experiment have been analysed by wavelength of maximum absorption, amounts of dye uptake, color difference, Hunter's value and Munsell's value. Gardenia Jasminoides is monogenetic dye, but it gained darker color by pre-mordanting method used Al mordant agent and greenish yellow color by Fe mordant agent. whereas Curcuma, an Amur cork, and bud of pagoda tree are shown as greenish yellow color, and A barberry root, Betel nut, and Rhubarb are shown as reddish yellow color. these gained khaki colored dyed fabric by Fe mordanting. In addition, Sappan wood showed great result in pre-mordanting. Especially, it gained dark red color by Al pre-mordanting. The pink color was shown by post-mordanting. and Logwood showed great dyeing result in Hanji and cotton better than silk. Specially pre-mordanting was effective. Hanji and cotton showed greenish blue color by Al pre-mordanting, and silk showed brown color.

• 한국의상디자인학회지
• /
• 제18권4호
• /
• pp.77-86
• /
• 2016

In order to analysis on color difference of natural dyes, I have dyed Hanji, cotton, silk fabric and exposed them to carbon arc light. The results of experiment have been analysed by Munsell's value, and compared the difference of colors which were recognized visually. Gardenia Jasminoides is monogenetic dye, but it gained darker color by pre-mordanting method used aluminum mordant agent and greenish yellow color by ferric mordant agent. whereas Curcuma, an Amur cork, and bud of pagoda tree are shown as greenish yellow color, and A barberry root, Betel nut, and Rhubarb are shown as reddish yellow color. these gained khaki colored dyed fabric by ferric mordanting. In addition, Sappan wood showed great result in pre-mordanting. Especially, it gained dark red color by aluminum pre-mordanting. The pink color was shown by post-mordanting. and Logwood showed great dyeing result in Hanji and cotton better than silk. Specially pre-mordanting was effective. Hanji and cotton showed greenish blue color by aluminum pre-mordanting, and silk showed brown color. However the color, which was recognized visually, differed from colorimeter sometimes. Therefore, such color table might be necessary for the natural dyeing.

• 대한지구과학교육학회지
• /
• 제15권1호
• /
• pp.16-26
• /
• 2022

이 연구는 초등 예비교사들이 과학수업을 설계할 때 무엇에 주목하는지 알아보는 것이었다. 초등 예비교사들의 응답을 분석한 결과, 초등 예비교사들은 과학탐구를 강조하는 수업, 학생의 흥미, 수준, 오개념 처치를 고려한 수업, 일상생활과 밀접한 수업에 주안점을 두며 과학수업을 설계하고 있는 것으로 분석되었다. 특히, 초등 예비교사들은 실험 및 탐구를 강조하는 과학수업 설계에 대해 많은 언급을 한 것으로 보아 탐구를 강조하는 것이 과학수업 설계에서 중요한 점으로 인식하고 있는 것으로 나타났다. 예비교사들이 탐구를 강조하는 것과 같이 과학교육의 중요한 측면을 인식하고 있는 점은 매우 긍정적이라고 할 수 있다. 더불어 예비교사들의 교사 전문성 계발을 위해 교사 및 동료와의 협업을 통한 수업설계 및 실연 기회를 늘려가야 함을 제안한다.

• 컴퓨터교육학회논문지
• /
• 제23권4호
• /
• pp.79-89
• /
• 2020

본 연구에서는 김성원과 이영준(2019)에서 개발한 프로그래밍 기반 TPACK 교육 프로그램을 검증하는 연구이다. 연구에서 처치는 설계 기반 연구를 통하여 개발한 프로그래밍 기반 TPACK 교육 프로그램(1차, 2차, 3차, 최종)과 ICT 기반 TPACK 교육 프로그램을 사용하였다. 교육 프로그램의 효과를 분석하기 위하여 사전, 사후에 TPACK 검사 도구를 실시하였으며, 검사 결과는 ANCOVA를 통하여 분석하였다. 적용 결과, 프로그래밍 기반 TPACK 교육 프로그램을 적용한 예비 교사의 TPACK은 ICT 기반 TPACK 교육 프로그램보다 유의하게 높았다. 특히 설계 기반 연구를 통하여 최종적으로 개발한 교육 프로그램이 예비 교사의 TPACK 발달에 가장 효과적이었다. 이러한 연구를 통하여 설계 기반 연구를 통하여 예비 교사의 TPACK 향상에 효과적인 프로그래밍 기반 TPACK 교육 프로그램을 개발하였다는 것을 확인하였다.

• 대한조선학회논문집
• /
• 제41권3호
• /
• pp.13-21
• /
• 2004

This paper deals with a theoretical and experimental method for the design of a biased asymmetric pre-swirl stator propulsion system which is an energy saving device by recovering a propeller rotational energy. In the case of slow-speed ships, the upward flow is generated along the afterbody hull form at the propeller plane. The generated upward flow cancels the rotating flow of the propeller at the starboard part while it increases at port part. The present biased asymmetric pre-swirl stator propulsion system consists of three blades at the port and one blade at the starboard which can recover the biased rotating flow effectively. This paper provides the design concept which gives more simple and a high degree of efficiency and the experimental results for the compound propulsion system.