과학 교육에서 STS 수업모형의 적용효과에 대한 메타 분석

정미진,윤기순,권덕기 경북대학교 과학교육연구소 2008 科學敎育硏究誌 Vol.32 No.2

이 연구의 목적은 STS 과학교육에 대한 국내 연구의 동향을 분석하고 메타분석을 통해 STS 수업모형의 적용효과를 평가하는데 있다. 연구대상 논문은 1991년부터 2006년까지 출판된 석사학위 논문 104편과 과학교육 저널에 출판된 논문 78편을 포함한 총 180편이었다. STS 수업 모형의 효과 평가에 총 56편이 선정되었다. STS 수업 모형 적용 효과의 평균효과크기는 0.40이었다. 이 결과는 STS 수업은 학생들의 과학에 대한 태도, 과학 학업 성취도, 탐구능력, 환경에 대한 태도 및 환경에 대한 지식을 향상시키는데 전통적인 수업보다 긍정적인 효과가 있었음을 의미한다. STS 수업은 환경에 대한 태도의 증진에 가장 큰 평균효과 크기를 나타내었다. 그러므로, STS 수업에서 가장 좋은 효과를 얻기 위해서는 이러한 결과들을 반영하는 것이 필요할 것이다. 향후 STS 교육에 대한 전반적인 평가를 하기 위해서는 STS 수업 모형의 효과와 과학-기술-사회의 상호관계에 대한 교사와 학생들의 이해에 대한 연구 결과를 종합하는 것이 필요하다. The purposes of this study were to analyze the domestic research trend of the STS Education and to evaluate the application effects of STS teaching model by using Meta-analysis. The selected research articles were 180 articles including 104 of the master’s theses and 76 of science education journal articles published from 1991 to 2006. For the evaluation of the effects of STS teaching and learning model, 56 articles were selected finally. The mean effect size of the application effects of STS teaching and learning was 0.40. The result indicated that STS teaching had more positive effects than the traditional teaching on enhancing student's attitude for science, academic achievement in science, inquiry ability, attitude for environment and knowledge for environment. Especially, it had shown the most positive effects on improvement in the attitude for environment. Therefore, it might be better to reflect these results for the best effect of STS teaching. To assess STS education on the whole, it is necessary to synthesize the effects of STS teaching and learning model and the results of the study on teachers’ and students’ understanding about the interrelation of science, technology and society.

위절제술 환자의 표준진료지침 개발 및 적용 효과

김은희,김철규,이순교,김순덕,이혜옥,권정순,이경미,이민미,심순미,유용만,신종식,강은희,이상일,김병식,오성태,육정환,박수길 한국의료QA학회 2003 한국의료질향상학회지 Vol.10 No.2

Background : Gastric cancer is the most common malignant tumor in Korea. surgical operation is one of the major treatment modalities for gastric cancer patients. Therefore, gastrectomy is one of the most common procedures in General Surgery. There were variation in length of hospital stay and medical treatment for gastrectomy between three surgeons at Asan Medical Center. Clinical pathways have received considerable attention as a tool for recucing the medical practice variation, increasing the efficiency of care process, and improving the quality of care. The aim of this study was to evaluate the effect of a clinical pathway for gastrectomy in gastric cancer patients. Methods : The clinical pathway for gastrectomy was developed and implemented by a multidisciplinary group in Asan Medical Center. A computerized clinical pathway program was developed and revised after a pilot test. A total of 145 patients underwent gastrectomy by three surgeons at Asan Medical Center. We compared the length of hospital stay, patient satisfaction, and unplanned readmission rate between the pre-pathway group(n=67) and the post-pathway group(n=78). We also investigated the degree of satisfaction among the physicians and nurses who were main end-users of the clinical pathway. Results : The clinical pathway was applied to all target patients. The average length of hospital stay was shortened from 12.7days to 10.6days(p<0.01). The degree of patient satisfaction with the care process changed from 90.3% to 89.2% after the implementation of the clinical pathway, but the difference was of satistically significant(p=0.761). Unplanned readmission rate was 2.9% in the pre-pathway group. More than 90% of physicians and nurses answered that the clinical pathway had been a useful tool in their medical practice. Conclusions : The findings of the study demonstrated that implementation of the clinical pathway for gastrectomy produced substantial reduction in the length of hospital stay while improving the quality of patient outcomes. The computerized clinical pathway program can be used as one of the powerful patient management tools for reducing the practice variations and increasing the efficiency of care process in Korea hospital settings.

대전시 노은 도매시장 채소류의 농약 잔류 실태 및 식이섭취량 추정

한국탁,이규승,이은경,이용재,고광용,원동준,이정원,권순덕 한국환경농학회 2003 한국환경농학회지 Vol.22 No.3

대전시 노은 도매시장에서 채취한 6종의 채소류 중 농약잔류량을 조사한 후 이에 대한 위해성 평가를 실시하였다. 전체 100건의 분석시료 중 농약이 검출된 시료의 비율은 46.0%이었고, 잔류허용기준 초과비율은 6.0% 이었다. 검출비율이 높은 시료는 상추(85.0%), 깻잎(80.0%), 오이(60.0%) 순이었고, 상추 3건, 깻잎 3건이 허용기준을 초과하였다. 살균제는 dicar-boximide계, 유기염소계, azole계 농약, 살충제는 유기인계, 합성 pyrethroid계 농약이 많이 검출되었다. 검출빈도가 높은 성분은 procymidone, chlorpyrifos, chlorothalonil, cypermethrin, EPN의 순이었다. 위해성을 평가하기 위해서 각 농작물에 대한 농약의 추정 섭취량과 ADI를 비교한 결과, 허용기준을 초과한 깻잎의 bitertanol, triflumizole, iprobenphos가 다른 성분에 비하여 높은 비율을 보였다. 그러나 각 농산물의 식이섭취량이 적어 ADI에 대한 추정섭취량의 비율이 0.46%이하로 나타나 그 영향이 매우 낮은 것으로 판단되었다. Pesticide residues in some vegetables collected at Noeun wholesale market in Daejeon were surveyed and assessed their risk In 100 samples, the detection rate of pesticide was 46.0% and the rate exceed MRL was 6.0%. Commodities showing high detection rate were lettuce(85.0%), perilla leaf(80.0%) and cucumber(60.0%). Dicarboximide, organochlorine, and azole fungicides and organophosphorus and pyrethroid insecticides were detected. Detection frequency of pesticide was in the order of procymidone, chlorpyrifos, chlerothalonil, cypermethrin and EPN. When the estimated intake amount of the pesticides were compared with ADI to assess their risk, bitertanol, triflumizole and iprobenphos in perilla leaf were higher rate than the other vegetables. However the total amounts of intake of pesticides were estimated to less than 0.46% of ADI.

Development of Soil Moisture Controlling System for Sesame Based on Smart Irrigation System

( Soon Hong Kwon ),( Jung Duck So ),( Ki-yeol Jung ),( Sanghun Lee ),( Jongsoon Kim ),( Jong Min Park ),( Soon Gu Kwon ),( Dong-hyun Kim ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1

The smart irrigation system using ICT technology is crucial for stable production of upland crops. The objective of this study was to develop a smart irrigation system that can control soil water, depending on irrigation methods, in order to improve sesame production. In surface irrigation, three irrigation methods (sprinkler irrigation (SI), surface drip irrigation (SDI), and fountain irrigation (FI)) were installed on 68m x 13.5m fields. The distance between the sprinklers in SI was 10m. In SDI and FI, the lateral pipes were laid down 1.2m and 3m interval, respectively. The soil water contents were measured at 10, 20, 30, and 40cm depth, and an automatic irrigation system controls a valve to maintain the soil water content at 10 cm to be 30%. In subsurface drip irrigation, the drip lines were installed in a 30m x 9m plot at a depth of 20cm, with integrated dippers every 70cm or 140cm under ridge or furrow. In controlled drainage system, the culverts were installed with the spacing of 3m and 6m, and it was managed with two ground water level (30cm and 60cm). These two irrigation systems utilized sensor-based monitoring to provide real time soil water status. The seasonal irrigation amounts were 96.4 ton/10a (SDI), 119.5 ton/10a (FI), and 113 ton/10a (SI), respectively. Since SDI system supplies water near the root zone of the plants, the water was saved by 23.9% and 17.3%, compared with FI and SI, respectively. In subsurface drip irrigation, the average soil water content was 38.8%, which was 10.8% higher than the value at the control treatment (28%), implying that it provides water effectively. In controlled drainage system, the soil water contents were greatly influenced on the ground water level; the water contents at the surface zone (0-10cm, 10-20cm) with 60cm ground water level was 25.3% and 31.6%, which were 9.4% and 8.4% lower than the values with 30cm ground water level. In addition, the high water contents were measured in the narrow culvert spacing. In conclusion, this smart irrigation system can reduce production costs of upland crops, thereby improving food self-sufficiency in Korea.

Design criteria of wind barriers for traffic -Part 1: wind barrier performance

Kwon, Soon-Duck,Kim, Dong Hyawn,Lee, Seung Ho,Song, Ho Sung Techno-Press 2011 Wind and Structures, An International Journal (WAS Vol.14 No.1

This study investigates the design criteria required for wind barriers to protect vehicles running on an expressway under a high side wind. At the first stage of this study, the lateral deviations of vehicles in crosswinds were computed from the commercial software, CarSim and TruckSim, and the critical wind speeds for a car accident were then evaluated from a predefined car accident index. The critical wind speeds for driving stability were found to be 35 m/s for a small passenger car, yet 30 m/s for a truck and a bus. From the wind tunnel tests, the minimum height of a wind barrier required to reduce the wind speed by 50% was found to be 12.5% of the road width. In the case of parallel bridges, the placement of two edge wind barriers plus one wind barrier at center was recommended for a separation distance larger than 20 m (four lanes) and 10 m (six lanes) respectively, otherwise two wind barriers were recommended.

Free Vibration and Multi Mode Flutter Analysis of Stress-Ribbon Footbridges

Soon-Duck Kwon,Moon-Young Kim 한국풍공학회 1999 한국풍공학회지 Vol.3 No.1

Mitigating the Effects of Wind on Suspension Bridge Catwalks

Kwon, Soon-Duck,Lee, Hankyu,Lee, Seungho,Kim, Jonghwa American Society of Civil Engineers 2013 Journal of bridge engineering Vol.18 No.7

영상처리를 통한 교량 진동 측정

권순덕(Kwon Soon-Duck),이종운(Lee Jong Woon),도영수(Doh Young-Soo),김정행(Kim Jeong-Haeng) 대한토목학회 2002 대한토목학회 학술대회 Vol.2002 No.11

차량-교량 상호작용에 관한 실험 및 이론 연구

권순덕(Kwon Soon-Duck),김철영(Kim Chul-Young),장승필(Chang Sung-Pil) 대한토목학회 2003 대한토목학회논문집 A Vol.23 No.2A

교량 동특성에 미치는 차량-교량 상호작용의 영향

권순덕(Kwon Soon-Duck),김철영(Kim Chul-Young),장승필(Chang Sung-Pil) 대한토목학회 2002 대한토목학회 학술대회 Vol.2002 No.11