• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2003.05a
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• pp.5-7
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• 2003

의류용 섬유제품의 쾌적성을 객관적으로 측정하려는 시도가 계속되고 있지만, 아직 소비자의 미묘한 차이를 검출하는 능력을 재현하기에는 거리가 있어 보인다. 객관적 측정법들은 재현성과 신뢰성 면에서 제각기 자신들의 우수한 성능을 자랑하지만, 검출능력의 민감성은 주관적 평가에 훨씬 못 미치고 있기 때문에 비현실적인 경우가 많다. 본 연구의 목적은 주관적 평가의 신뢰성을 높이고 통계적인 추론이 가능한 보다 진보된 형식의 주관적 평가법을 개발하고 의류용 직물의 촉감평가에 응용하는 것이다. 국내에서 생산되는 여름용 캐쥬얼 웨어를 대상으로 여러 형태의 주관적 평가법을 적용하여 그 촉감을 평가하였다. 평정척도법, 표준 비교법, 순위법, Thurstone일대 비교법, Quad 분석법 등을 순차적으로 적용하여 평가자 판단의 일관성 여부, 평가자간의 일치성 여부, 재현성 및 논리성 여부를 통계적으로 평가한 후 이를 통과한 평가자들을 대상으로 실험을 반복한 후, 직물 촉감과 관련된 물리적 속성들과의 관련성을 고찰하였다.

• Korean Journal of Mathematics
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• v.19 no.4
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• pp.495-521
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• 2011

In this paper, the self-evaluation, the peer-evaluation and the instructor evaluation on virtual mathematics lesson have been performed. The method of checking on the given evaluation item have been used. In result, a lot of difference was shown between self-evaluation, peer-evaluation and the instructor-evaluation toward virtual mathematics lesson. Pre-service teachers were shown as lacking awareness on instructional Virtual Mathematics Lesson' evaluation. Therefore it seems that we must have the opportunity to reflect on the teaching method through a great deal of experience on self-evaluation and peer-evaluation of virtual lessons.

• Annual Conference on Human and Language Technology
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• 2011.10a
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• pp.25-29
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• 2011

영어 논술 자동 평가 시스템은 수험자가 쓴 에세이에 대하여 전문 평가자가 직접 읽고 평가하는 방식에서 벗어나 웹상에서 자동으로 평가 받을 수 있는 실시간 시스템이다. 하지만 비영어권 수험자에게는 논리력 혹은 작문 능력보다 그것을 영어로 표현하는 유창성에서 더 큰 문제가 있을 수 있는데 기존 연구에서는 이런 측면에 대한 평가가 부족하였다. 본 연구에서는 보다 정확한 비영어권 수험자의 영어 논술 평가를 위해 어휘력, 문장 구조의 다양성, 문장의 혼잡도를 평가하여 언어 유창성에 집중된 기계학습 방법의 추가적인 자질을 제안한다. 실험 결과 전문 평가자의 점수와 1) 상관관계 2) 정확도 측면에서 제안하는 방법은 기존의 방법에 비해 더 나은 성능을 보였다.

• The Journal of the Korea institute of electronic communication sciences
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• v.18 no.3
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• pp.521-526
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• 2023

Due to the recent pandemic, most educational systems are being conducted through online classes. Unlike face-to-face classes, it is even more difficult for learners to maintain concentration, and evaluating the learners' attitude toward the class is also challenging. In this paper, we proposed a real-time concentration-based review support system for learners in real-time video lectures that can be used in online classes. This system measured the learner's face, pupils, and user activity in real-time using the equipment used in the existing video system, and delivers real-time concentration measurement values to the instructor in various forms. At the same time, if the concentration measurement value falls below a certain level, the system alerted the learner and records the timestamp of the lecture. By using this system, instructors can evaluate the learners' participation in the class in real-time and help to improve their class abilities.

• The Journal of Society for e-Business Studies
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• v.27 no.1
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• pp.81-94
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• 2022

In the service sectors, the qualitative evaluation method in the form of a survey is widely used as a major assessment tool to evaluate the quality of service. However, the results obtained from a survey can involve the subjective judgment of the respondent. In this study, we propose a method to secure objectivity by excluding subjectivity that may be included in the qualitative evaluation results. In particular, we deal with a situation where the same type of qualitative evaluation tool is used repeatedly by several service providers. To this end, by utilizing both the Ordered Probit model and third-party evaluation results, we determine whether subjectivity is involved in the results. After correcting subjectivity, the final results are obtained through statistical analysis. The application analyzed in this study is the medical service area. With the actual evaluation results supplied by the service providers, we explain how objectivity can be secured from the assessment data by applying our proposed approach.

• Journal of the Korean Data and Information Science Society
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• v.27 no.2
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• pp.395-407
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• 2016

This study aims to apply the G-theory for estimation of reliability of evaluation scores between raters on Taekwondo Poomsae rating categories. Selecting a number of game days and raters as multiple error sources, we analyzed the error sources caused by relative magnitude of error variances of interaction between the factors and proceeded with D-study based on the results of G-study for optimal determination of measurement condition. The results showed below. The estimated outcomes of variance component for accuracy among the Taekwondo Poomsae categories with G-theory showed that impact of error was the biggest influence factor in raters conditions and in order of interaction in subjects and between subjects, also impact of variance component estimation error on expression category was the major influence factor in interaction and in order of the between subjects and raters. Finally, the result of generalizability coefficient estimation via D-study showed that measurement condition of optimal level depend on the number of raters was 8 persons of raters on accuracy category, and stable reliability on expression category was gained when the raters were 7 persons.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.117-122
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• 2006

In spite of various approaching method to satisfy with the owner's requirements in schematic design phase, it is insufficient to evaluate intermediate process of design arithmetically with participating in design process. So the numerous changes of design after completion of design development cause a lot of loss to the design company. The designer arranges owner's requirements to prevent from this loss at the initial stage of schematic design phase systematically and lets owner and stakeholder to evaluate the value of schematic design to satisfy with owner's and stakeholder's requirements. If the evaluated value for schematic design is above a definite value index, the next design phase should be advanced. By this method, the design company can reduce the additional expenses remarkably by preventing with re-design which is occurred by not reflecting owner's intention or by changing owner's intention. Also the designer have the owner to evaluate the result of design and construction. The designer let the owner know whether the owner's requirement should well have been reflected on drawing or not. There is a strong point to be able to minimize the criticism which can be occurred after completion of construction by evaluating for owner's satisfactory degree and by having owner and designer confirm the result of design and construction arithmetically. This paper presents that the loss of design company can be minimized by going over at next step if the value is over a definite value index after evaluating value for each design from design process.

• The KIPS Transactions:PartC
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• v.10C no.1
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• pp.111-118
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• 2003

Network reliability means network ability which perform normal operation of network components within defined time period, on the other hand, network survivability is the index of normal operation in nerwork failure. In occurrence of network failure, network operator is interested in the measurement of network survivability, but, in a view of subscribers, it is more interested in how many subscribers are out of service and how long the out of service state lasts. In this paper, a service outage evaluation model fitted for telecommunication network in Korea is proposed, which measures the impacts of subscribers in case of network failure which induces a service outage. The outage evaluation result of "Mobile to Land" service outage which has 30.000 subscribers affected for 30 minutes is 2.5. This value is 5 times larger than that of the same service outage which has 10,000 subscribers affected for 30 minutes, i.e, the impact of subscribers in the former case is 5 times larger than that of the latter case. If 30,000 subscribers have isolated in "Mobile to Land," "Local Mobile to Mobile" service for 30 minutes by the exchange out of order in PCS network, then the evaluation result of this service outage will be 3.75.

• Journal of Digital Convergence
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• v.12 no.1
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• pp.525-530
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• 2014

This experimental research explores the effect of screen size of smart media on viewer's evaluation and presence. For this experimental research, 2 groups of subjects composed of university students were exposed to TV document video clips which were shown by two different size of smart media, and evaluation and presence related questions were asked analysed. This research found that subjects exposed to large smart media showed higher degree of image aesthetic evaluation and presence than those exposed to small media. but the effect of screen size of smart media on viewer's program evaluation was not found. Through this study, screen size of smart media is main factor which has effect on image aesthetics and presence of TV documentary.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.33 no.9
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• pp.859-869
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• 2009

The sharp indenters such as Berkovich and conical indenters have a geometrical self-similarity in theory, but different materials have the same load-depth curve in case of single indentation. In this study, we analyze the load-depth curves of conical indenter with angles of indenter via finite element method. From FE analyses of dual-conical indentation test, we investigate the relationships between indentation parameters and load-deflection curves. With numerical regressions of obtained data, we finally propose indentation formulae for material properties evaluation. The proposed approach provides stress-strain curve and the values of elastic modulus, yield strength and strain-hardening exponent with an average error of less than 2%. It is also discussed that the method is valid for any elastically deforming indenters made of tungsten carbide and diamond for instance. The proposed indentation approach provides a substantial enhancement in accuracy compared with the prior methods.