• 한국산학기술학회논문지
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• 제12권6호
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• pp.2543-2547
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• 2011

본 연구에서는 조별과제 시 발생할 수 있는 무임승차자, 학생들 간의 갈등, 학생들 간의 적대감 형성 문제를 해결하기 위하여 직무배정을 통한 조별과제 수행방법을 제안한다. 특히, 직무배정을 통한 과제 수행이 조별과제에 대한 동료평가 시 발생하는 역효과를 개선할 수 있는지 고찰한다. 본 연구에서는 공학교육의 설계 교과목에서 학습자를 한 조당 일곱 명으로 구성하고, 조원 별로 각각 상이한 직무를 부여하여 한 학기 간 과제를 진행하였다. 결과적으로 변화된 조별과제 수행방법이 무임승차자, 학생들 간의 갈등, 학생들 간의 적대감 형성 문제에 미치는 영향을 학생들의 평가를 통해 고찰한다. 본 연구에서 제시한 직무배정을 통한 조별과제 수행 방법은 무임승차자 문제의 해결에 효과가 있었으며, 특히 동료평가 방법을 적용한 경우와 대비하여 학생들 간의 갈등 발생을 줄이고, 적대감 형성을 예방하는 효과가 있는 것으로 나타났다. 본 논문에서 제시한 조별과제 수행방법을 교육과정의 조별과제 수행 시 적용하면 과제 수행 과정의 효율성을 높일 수 있을 것이다.

• 공학교육연구
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• 제27권1호
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• pp.63-70
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• 2024

The capstone design classes in the College of Engineering are often team project-oriented, and teamwork skills are reported to positively impact problem-solving abilities. While team project courses have various advantages, they also come with challenges such as social loafing and issues related to free riders, which consistently hinder the positive effects of team project courses. To prevent these issues, there is a need to provide a clear evaluation-reward system for team members' contributions. In this study, we examined the reliability of peer evaluation scores for team members' contributions and reviewed methods to incorporate them into team project grades. The review results indicated that peer evaluation scores are deemed to have considerable reliability from a qualitative perspective. However, due to the relatively small team size in team project courses (3 to 6 members per team), using the arithmetic mean of peer evaluation scores is statistically challenging. As a complementary approach, this study proposes limiting the reflection ratio of peer evaluation scores and applying a more macroscopic processing method, not the arithmetic mean, to incorporate peer evaluation scores for team contributions into grades.

• 대한전기학회논문지:전력기술부문A
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• 제49권5호
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• pp.199-204
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• 2000

This paper presents new approaches for the calculation for the calculation of each user's wheeling prices based on the economic analysis method with focus on the postage stamp rule. The suggested postage stamp rules can overcome the following problems embedded in the conventional accounting-costs-based methods such as the volatileness of wheeling prices depending deprieciation methods, emerging the wheeling free-riders due to the difference between accounting life-time and technical life-time, price discrimination between firm and non-firm network users, etc. To solve these problems we suggest new postage stamp rules employing capital recovery factor for investment costs treatment and applying technical life-time. Furthermore, we have suggested a new formulation for non-firm wheeling users based on the wheeling energies. In the case study, the results of suggested postage stamp methodologies are compared with those of conventional approaches.

• International Journal of Advanced Culture Technology
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• 제10권1호
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• pp.160-169
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• 2022

This qualitative study aimed to investigate ways to improve effective cooperative learning from students' perspective by understanding and analyzing the learning experiences of nursing students who participated in a collaborative problem-solving learning model. Data were collected through focus group interviews and reflection journals of six second-year nursing students from G-university in J-city who participated in a collaborative problem-solving learning model course. The interview data were analyzed and divided into 3 categories and 10 subcategories according to the six-step thematic analysis method proposed by Braun and Clarke. The results of analyzing the interviews were considered based on three areas: preparation before learning, the process of collaborating as a cooperative learning experience, and solutions and expectations after learning. The participants felt frustrated because collaborative problem-solving took more time for individual learning than traditional methods did and would not allow them to check the correct answers immediately. However, they gained new experiences by solving problems and engaging in discussions within their learning community. The participants' expectations included material that could help their learning, measures to prevent free-riders, and consideration of the learning process in evaluation factors. Although this study has sample limitations by targeting nursing students in only one region, it can be used to help operate collaborative problem-solving classes, as it reflects the real experiences and opinions of students.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 2009년도 IWAIT
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• pp.376-380
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• 2009

Peer-to-Peer content delivery technology recently begins to be used not only for file sharing applications such as eDonkey but also for every kind of content services. KBS, a broadcasting company in Korea, is aggressively driving to apply Peer-to-Peer technology to KBS's commercial internet video service but we found that there are two big huddles. First, end users may refuse to share their own resources for KBS's cost reduction using Peer-to-Peer content delivery technology. Second, it may cause that the number of free-riders increases and the efficiency of the overall system would fall. From commercial service provider's perspective, we have to avoid that end users have unfavorable impressions on the service and the usefulness of Peer-to-Peer technology decreases. In order to overcome these problems, we studied how to offer incentive to end users and how much incentive would be reasonable, and then applied the result to real service for verification.