• 기술혁신학회지
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• 제2권2호
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• pp.249-265
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• 1999

This study examines the efficiency of engineering education using DEA(data envelopment analysis) which is often used in the efficiency evaluation of public services. We evaluate 27 mechanical engineering departments according to academy-basis, general basis, and employment-basis considering students' academic level and input costs as input factors. Our empirical results suggest that an evaluation method using DEA can give us useful informations such as benchmarks to improve education specialization where it is desirable, decisions about whether a department should expand its gross input or not, and proper directions about which input factors should be controlled and how much control is needed.

• 반도체디스플레이기술학회지
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• 제13권3호
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• pp.21-25
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• 2014

The texturing is one of the most important processes for high efficiency crystalline silicon solar cells. The rear side flatness of silicon solar cell is very important for increasing the light reflectance and forming uniform back surface field(BSF) region in manufacturing high efficiency crystalline silicon solar cells. We investigated texturing difference between front and rear side of wafer by texturing of two adhered wafers. As a result, the flatter rear side was obtained by forming less pyramid size compared to the front side and improved reflectance of long wavelength and back surface field(BSF) region were also achieved. Therefore, the texturing of two adhered wafers can be expected to improve the efficiency of silicon solar cells due to increased short circuit current(Isc).

• 한국치위생학회지
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• 제13권4호
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• pp.639-644
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• 2013

Objectives : The aim of this study is to investigate the influencing factors of oral health behaviors according to oral health education experiences in middle school students. Methods : The subjects were 301 middle school students who lived in Gimhae and Jinhae. All statistical analyses were performed using SPSS. Results : The group with oral health education experience had higher scores in oral health knowledge(p<.01) than the group without oral health education. The group with oral health education experience has higher scores in oral health behavior (p<.01) than the group without oral health education. The group with oral health education experience has higher scores in self-efficiency (p<.01) than the group without oral health education. The experience of oral health education shows positive correlation with oral health knowledge(r=0.184), oral health behavior(r=0.199) and self-efficiency(r=0.199). There existed a positive correlation between oral health knowledge and self-efficiency(r=0.351). Conclusions : It is necessary to provide oral health promotion program in middle school students. The importance of oral health care is closely related to oral health knowledge.

• 품질경영학회지
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• 제42권4호
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• pp.647-664
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• 2014

Purpose: The purpose of this study was to evaluate administrative efficiency of the Korean university and to identify the factors which may affect on the efficiency of universities. In addition, last purpose of this study was to compare correlation among administrative, research and education model. Methods: The collected data through Higher Education in Korea were analysed using DEA (Data Envelopment Analysis). Furthermore, in order to provide the better accurate results by removing the bias of the results, this paper implements Bootstrap DEA. It also analyzed the causes of efficiency by Tobit Regression after setting the dependent variable as a proposed efficiency score and compared correlation analysis results between other models. Results: The results of this study are as follows; First, the Korean universities showed low administrative efficiencies. Second, efficiency of national universities are higher than it of private universities. Finally, the administrative and research education model have statistically significant correlation. However, usually many Korean universities focus their resources on education performance such as employment and rates to attract new students than research performances. Conclusion: This study shows that the administrative efficiency positively affects both research and educational efficiency. Approximately 70% of the Korean universities needs to improve their administrative efficiencies and to pay attention to enhance their poor services, low-level performances.

• 한국가구학회지
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• 제24권2호
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• pp.131-139
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• 2013

The efficiency of internet lectures has been proved in many areas, and its significance and role theory has been consistently mentioned in the fields of furniture design education that demand a large amount of educational contents and practice in visual education. However, it reveals weaknesses without satisfying the demand owing to various realistic issues. In this study, the significance and developmental process of internet lecture as well as its effect after the development in terms of the education on furniture design were analyzed by counting some development cases of internet educational program in relation with AutoCAD educational course, a computer design program for furniture design. Also through such analysis, it intended to promote the development of design education by assessing the merits and problems, assignments to be supplemented, and utilization of the educational course development.

• 수산해양교육연구
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• 제22권1호
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• pp.67-78
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• 2010

The purposes of this study are to analysis correlations of teachers' developments, organizational conflicts, and school organizational efficiency, and to test the influences of teachers' developments and organizational conflicts on school organizational efficiency. The data were collected from 240 elementary school teachers in Busan. Pearson's correlation analysis among sub-factors and stepwised multiple regression analysis were applied. The research findings are as follows: First, most of the sub-factors of teachers' developments, organizational conflict, and organizational efficiency had statistically significant correlations, showing positive correlation between sub-factors of teachers' developments and organizational efficiency and negative correlation between sub-factors of organizational conflicts and organizational efficiency. Second, through stepwised multiple regression analysis at the significance level of 5%, 'conflicts against administrator' was the most significant predictor with 31.4% explanation of the variance of organizational efficiency. These results suggest the necessity of training to promote teachers' developments and administrators' leadership.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제9권3호
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• pp.1074-1086
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• 2015

We Relay-assisted cellular network architecture has been developed to cover cell-edge users and to improve capacity. However, the deployment of relay stations (RSs) in cellular networks may increase the total energy consumption. Though energy efficiency has become a major concern in cellular networks, little work has studied the energy efficiency of relay-assisted cellular networks by sleep scheduling. In this paper, a distributed base stations (BSs) sleep scheduling scheme in relay-assisted cellular networks is proposed. The goal is to maximize the energy efficiency under the spectral efficiency constraint. Firstly, whether the BSs should be sleeping or active is determined by the traffic profile. Then, the transmission powers of the active BSs are optimized within the game-theoretic framework, by using an interior-point method, so as to maximize the energy efficiency. Simulation results demonstrate that the effectiveness of the proposed scheme is superior to that turning on all the BSs without sleep scheduling.

• 한국보육학회지
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• 제19권2호
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• pp.19-33
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• 2019

본 연구의 목적은 그림책을 활용한 유아수학교육학습 경험이 예비유아교사의 수학에 대한 태도와 수학교수효능감에 미치는 영향을 알아보는 데 있다. 이를 위해 G광역시에 소재한 S대학교에 재학 중인 예비유아교사 39명을 연구대상으로 하여 실험집단 20명 통제집단 19명을 임의 배정하였다. 실험집단은 15주 동안 그림책에 기초한 유아수학교육 수업을 진행하였으며, 통제집단은 동일한 기간 동안 일반적인 유아수학교육 수업을 진행하였다. 수집된 자료는 SPSS 18.0 프로그램을 활용하여 수학에 대한 태도와 수학교수효능감의 결과 차이에 대한 t-검증을 실시하였다. 본 연구의 결과는 다음과 같다. 첫째, 그림책을 활용한 유아수학교육 학습 경험은 예비유아교사의 수학에 대한 태도에 긍정적인 영향을 미쳤으며, 수학에 대한 가치와 흥미를 증진시키고 수학에 대한 불안을 감소시키는 효과가 나타났다. 둘째, 그림책을 활용한 유아수학교육 학습 경험은 예비유아교사의 수학교수효능감 향상에 긍정적인 영향을 미쳤으며, 능력에 대한 신념과 결과에 대한 신념 모두 유의하게 향상되었다. 이러한 결과는 그림책을 활용한 유아수학교육 학습 경험이 예비유아교사의 수학에 대한 태도와 수학교수효능감을 향상시키는데 효과적인 교수학습 방법임을 시사한다.

• 한국건설관리학회논문집
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• 제14권3호
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• pp.78-87
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• 2013

현대사회는 산업경제사회에서 지식기반사회로 급격히 변화되어 현대인에게 요구하는 지식과 기술의 변화를 따라가기 위하여 지속적인 학습 또는 교육을 받지 않으면 현대사회를 살아갈 수 없게 되었다. 건축 설계사무소의 경우 내부역량 향상에 초점을 맞춰 자체적인 교육을 실시하여 실무자의 능력을 배양함으로서 기업의 생산성을 향상시키는데 주력하고 있다. 이와 관련하여 최근 다양한 산업분야에서 재무비율 지표들을 활용한 자료포락분석(Data Envelopment Analysis, DEA)을 실시하여 기업의 효율성을 분석하고 있으며, 건설산업에서 또한 DEA를 활용한 효율성 분석 연구가 증가하고 있다. 그러나 건설산업의 경우 경영 효율성에만 초점을 맞춰 연구가 진행되었을 뿐 각 기업의 교육효율성 분석과 같은 특정 분야에 대한 접근이 매우 부족한 실정이다. 이에 본 연구에서는 교육효율성과 관련된 선행연구와 전문가 인터뷰를 통한 변수 도출 및 계층적 분석방법(Analytic Hierarchy Process, AHP)을 활용하여 투입 및 산출 변수를 선정한 후 DEA 모형을 활용하여 건축 설계사무소의 교육효율성을 분석하였다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제7권2호
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• pp.216-233
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• 2013

Conventional optimization designs of wireless networks mainly focus on spectral efficiency (SE) as a performance metric. However, as diverse media services are emerging, a green wireless network, which not only meets the quality of experience (QoE) requirements for users and also improves energy efficiency (EE), is the most appropriate solution. In this paper, we firstly propose the unit QoE per Watt, which is termed QoE efficiency (QEE), as a user-oriented metric to evaluate EE for wireless networks. We then analyze which is the kind of wireless resource given priority to use under different scenarios to obtain an acceptable QEE. Particularly, power, delay and data-rate related to QoE are separately addressed for several typical services, such as file download, video stream and web browsing services. Next, the fundamental tradeoffs are investigated between QEE and SE for wireless networks. Our analytical results are helpful for network design and optimization to strike a good balance between the users perceived QoE and energy consumption.