• 대한수학교육학회지:학교수학
• /
• 제12권2호
• /
• pp.97-111
• /
• 2010

이 연구의 목적은 예비수학교사의 수학교수학습에 대한 신념체계와 수학교수법 중에 시행하는 예비실습을 하는 동안 기록한 활동지의 기술된 수업행동을 분석하여 예비교사가 어떻게 새로운 신념체계를 내재화하는 지 살펴보는 것이다. 연구 결과, 연구에 참여한 예비교사는 일대일 학생과의 예비실습활동을 통하여, 초등학생들의 수학학습 사고과정에 대한 지식을 더 확실하게 자신의 신념체계로 통합하는 것으로 보인다. 그 과정에서 예비교사는 기존의 신념체계와의 심리적 갈등을 겪고 해소해 나가는 것으로 나타났다. 또한, 그 과정을 통하여, 예비교사는 자신의 수학교수학습에 대한 신념체계를 보다 더 분명하고 명확하게 표현하는 것으로 나타났다.

• Journal of Chest Surgery
• /
• 제25권10호
• /
• pp.1055-1060
• /
• 1992

Clinical experience of 21 patients with infective endocarditis was reviewed. Endocarditis involved the left-sided valve in 16 cases, the right-sided valve in 2, and PDA in the remaining 3 patients. Valve abnormalities included leaflet perforation in 9 patients, chordal rupture in 2,; annular abscess in 6; and aorticoleft atnal perforation in 2. Sixteen patients underwent valve replacement[aortic valve replacement in 7 patients, mitral replacement in 4 and double valve replacement in 5], two had VSD closure with pulmonary valve excision, three had ductus arteriousus closure. The patients were classified into two groups. I ] Healed endocarditis group: including the patients who had completed a planned cou-rseof antibiotic therapy[N=10], II ] Active endocarditis group: patients in which operations were performed prior to completetion of antibiotic treatment course[N=11]. The indications for operation included congestive heart failure, embolism, and persistent sepsis. Organisms were predominantly streptococcus[N=5] and staphylococcus [N=4] followed by candida, moraxella, and E-coli. By NYHA functional classification, all patients were in Class III or IV preoperatively. There was only one operative mortality in patient from group II. All patients substantially, improved postoperatively with NYHA classification in class I or II. This study shows that early surgical intervention in patients with active endocarditis has desirable outcome.

• 한국환경복원기술학회지
• /
• 제16권4호
• /
• pp.53-63
• /
• 2013

The purpose of this study is to analyze impacts of the forest fragmentation caused by development project. Furthermore, to investigate the applicability of landscape indicator when 'Feasibility of forest land conversion to other use' is conducted. The study site was consisted of golf course development and road construction. It is to compare before and after impacts of areal and linear development. As for the methods, selecting landscape indices, clustered into 3 Categories have been utilized. Category I was concerned with 'size of forest patches', II as 'shape of forest patches', and III as 'Core Area' These were calculated by FRAGSTATS, the program for analyzing fragmentation. The results showed that linear development caused more fragmented than areal development projects. Also, patch size, patch shape and core area are related to impacts of development, while Patch size decreased, patch shape and core area increased after development. Therefore, it is necessary to minimize the impacts of forest by considering fragmentation when development project is planned.

• 지역사회간호학회지
• /
• 제17권2호
• /
• pp.223-234
• /
• 2006

Purpose: This study was conducted to identify the effects of sexual health education guided by dramaturgical interaction on condom attitudes and intention to use a condom among undergraduate students. Method: Seventy-one female and 23 male volunteers at a university in D metropolitan city participated in the study with an one group pretest-posttest design. The intervention was implemented for five weeks in October 2003 with a short course including group works to encourage university students' social skills In condom use negotiations and condom purchase by using a dramaturgical interaction model. A confidential questionnaire was administered at baseline and post-intervention, and changes in condom attitudes and intention to use a condom were measured. Result: The self-report of female subjects showed significant positive changes in two out of the five condom attitudes domains, such assailability and effectiveness(p<.001) embarrassment about negotiation and use(p<.05), while male subjects showed no change in each of the condom attitudes domains. No significant difference was found in intention to use a condom after the intervention. Conclusion: Sexual health education planned to encourage social skills in condom use by using the dramaturgical interaction model was found to have positive effects on female university students' condom attitudes. A more rigorously designed trial is needed to develop a comprehensive sexual health promotion programme that targets both cognitive and behavioral changes among sexually active Young adults within community.

• 정보교육학회논문지
• /
• 제4권1호
• /
• pp.1-11
• /
• 2000

본 논문은 컴퓨터로 인한 교육매체의 변화에 의하여 새롭게 연구되어지고 있는 WBI의 교수모형을 교수설계의 원리에 의해 학습자의 개인별 특성에 맞게 학습을 습득하게 할 수 있도록 1 : 1 교육을 중점으로 하여 상업계고등학교 상업과를 예로 설계하였다. WBI를 이용한 교육은 학습자들에게 학습동기 및 성취감을 고양시켜 주었을 뿐 아니라 수준별 학습 나아가 개별화 학습을 가능하게 해주었다. 특히, 본 연구에서는 기존의 WBI와 같이 문제 제시와 학습내용 제시를 기본으로 하되, 학습자와 교사간의 상호작용이 이루어지도록 설계와 구현을 하였고, 영역별 학습 성취도를 제시하는데 초점을 두었다.

• 한국지구과학회지
• /
• 제25권5호
• /
• pp.293-302
• /
• 2004

초등학교 지구과학 학습내용에서 지진학습은 학생들이 직접 체험하기 힘든 내용이다. 따라서 이러한 내용을 효율적으로 학습하기 위해서 학생들의 흥미와 특성에 맞게 애니메이션 모듈을 개발하였다. 개발된 모듈을 ICT 교수 ${\cdot}$ 학습전략에 맞게 ICT 활용수업을 실시함으로써 학습의 효과를 거두고자 하였다. 개발된 애니메이션 모듈은 35명의 초등학생들에게 투입하였다. 그 결과 애니메이션 모듈을 적용한 수업이 학생들의 과학적 태도에 향상이 있는 것으로 나타났다.

• Asia pacific journal of information systems
• /
• 제24권4호
• /
• pp.417-441
• /
• 2014

Organizations need to exhibit characteristics of agility to stay ahead of their competitors and to survive in dynamic environments. One major concern for organizations is how to implement Information Systems (ISs) to enhance their agility. Organizations tend to spend too many resources to change their entire IS instead of only the components that cause problems without exactly knowing whether it enables or suppress organizational agility. To address these shortcomings and practical issues, we provide a framework to assess organizational agility and to diagnose a problem related to IS. By applying this prototype of the Agility Framework, we were able to diagnose a problem that the department of Management Control and Information Systems at the Universidad de Chile had and planned actions for them to improve its organizational agility with a course scheduling system, eClasSkeduler. This action research, which took more than 25-month for the first cycle, further develops the Agility Framework, which not only provides a way to link IS with organizational functions but also illustrates how to use it to diagnose a situation and plan actions for improving organizational agility through an information system.

• 한국추진공학회지
• /
• 제14권4호
• /
• pp.71-80
• /
• 2010

한국형발사체(KSLV-II)는 소형위성발사체(KSLV-I)의 후속으로 개발되는 1.5톤급 지구 저궤도 위성 발사체이다. 한국형발사체를 위해 75톤급 액체로켓엔진을 자력 개발할 예정이며, 이 엔진은 선행 연구로 수행된 30톤급 액체엔진 기술에 기반을 두고 있다. 액체로켓엔진 연소기는 높은 연소안정성과 구조적 건전성, 열적 내구성을 요구한다. 본 논문에서는 75톤급 액체로켓엔진 연소기의 설계요구조건과 이를 구현하기 위한 설계 과정에서 해석적 기반을 활용하여 수행한 제반 기술적 검토 사항을 제시하였다.

• 플랜트 저널
• /
• 제7권4호
• /
• pp.58-66
• /
• 2011

The power plant companies reached the culmination for growth in the domestic market. Besides, we have faced many challenges such as an electricity opening market trend for overseas, banning the use of coal due to the United nations framework convention on climate change, and the meticulous attention regarding the government's electricity charge plan. On the other hand, the overseas business has been a critical issue since China and many other developing countries expanded their projects abroad. Another factor is that power plant industry is being privatized, and it made the market regulation a bit loose. Thus, the market environment became favorable toward those companies which planned many overseas businesses. In this research, the power plant company's current condition for construction and operation as well as its technical competitiveness were analyzed, and an alternative plan using SWOT analysis for entering an oversea market was made. It dealt with both internal and external factors. Also, examined was the current situation under the power plant industry dealing with restructure for electric industry, lack of fossil fuel, and the United nations framework convention on climate change. From the research, it was suggested that many successful strategies to enter the overseas business by using the market trend I researched.

• Reproductive and Developmental Biology
• /
• 제33권4호
• /
• pp.257-262
• /
• 2009

This study was to investigate pregnancy rate of IVM/IVF/IVC Korean cattle (registered in government) embryos according to transport time course. For the production of embryos, oocytes recovered from slaughtered excellent grade cow and highly motile frozen-thawed bull semen (purchased from LIMC, KPN#497) was used. In vitro produced embryos were cultured in CR1aa medium for 8 days and some of them were frozen. The rate of average cleavage (>2-cell) was 83.0% (308/371) and blastocyst rate at day 8 was 34.7% (107/308). Among in vitro produced blastocyst embryos at day 8, most healthy embryos were freshly transferred on production day and some frozen embryos were direct transferred on appropriate day. These embryos were produced in a laboratory, embryo transfer (ET) was planned in 10 areas of the remote island (Jeju) from the laboratory by airplane. Thus, we examined the pregnancy rate in recipient cow according to embryo of transport time course before ET. From embryo transferred 44 recipient cows, overall pregnancy was 40.9% (18/44), these 18 cows were all calved [single, 94% (17/18); twin, 6% (1/18)] and total embryo implantation rate was 26% (19/66). Comparing transport time in the base of 6 hr, pregnancy rate in ET group required less 4 hr (60%, 9/15) was significantly higher than that required more 6 hr (26.3%, 5/19). In direct ET of freezing embryos, the pregnancy rate was 40% (4/10). However, it was difficult to find the meaning of temperature, pH and corpus luteum quality of recipients on comparison of pregnancy rate. When the cell death level of embryos according to storage time in thermos (straw container) before ET was measured by TUNEL staining, apoptotic index was increased with storage time-dependent. These results demonstrated that long distance transfer of IVM/IVF/IVC embryos is possible and the time of embryo transport is very important for the pregnancy rate on field trial.