• 말소리와 음성과학
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• 제5권4호
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• pp.109-119
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• 2013

The purpose of this paper is to show the tendency of evaluators in the pronunciation evaluation of English utterances. The tendency was visualized using the evaluation model of English pronunciation proposed in [1]. One hundred fifty female university students and four evaluators participated in the study. Students read eight English sentences aloud as evaluators evaluated English pronunciation by their own criteria. The models based on their pronunciation evaluation proved to be efficient in showing their evaluation tendency in terms of the fundamental frequency, intensity, segmental durations, and segmental spectra as compared to those of the five native speakers of English chosen for building the models. However, human evaluators were not always consistent in their evaluation and sometimes gave conflicting scores to the same students.

• 공학교육연구
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• 제23권2호
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• pp.24-30
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• 2020

This paper proposes the approaches to the evaluation of learning using concepts of artificial intelligence. Among various techniques, deep learning algorithm is employed to achieve quantitative results of evaluation. In particular, this paper focuses on the process-based evaluation instead of the result-based one using face expression. The expression is simply acquired by digital camera that records face expression when students solve sample test problems. Face expressions are trained using convolutional neural network (CNN) model followed by classification of expression data into three categories, i.e., easy, neutral, difficult. To substantiate the proposed approach, the simulation results show promising results, and this work is expected to open opportunities for intelligent evaluation system in the future.

• 한국가정과교육학회지
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• 제31권2호
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• pp.155-175
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• 2019

본 연구는 실천적 문제 중심 수업을 설계할 때 보다 구체적이고 체계적으로 수업을 설계하는데 활용하고자 하는 목적으로 백워드 설계 모형에 기초하여 개발되었다. 연구의 목적을 달성하기 위해 본 연구에서는 분석, 설계, 개발, 평가의 단계를 거쳐 연구를 진행하였다. 분석 단계에서는 실과 실천적 문제 중심 수업설계 모형의 개발을 위한 이론적 기초가 되는 실천적 문제 중심 교육과정에 대한 문헌 고찰, 수업설계 모형에 대한 문헌 고찰, 2015 개정 실과 교육과정의 분석 등이 이루어졌다. 설계 단계에서는 분석단계의 문헌 고찰을 통해 실과 실천적 문제 중심 수업설계 모형의 단계와 하위요소 등의 내용을 선정하고, 템플릿을 구안하였다. 개발 단계에서는 설계 단계에서 디자인한 내용을 바탕으로 실과 실천적 문제 중심 수업설계 모형의 초안을 개발하였다. 평가단계에서는 개발한 실과 실천적 문제 중심 수업설계 모형의 초안에 대하여 전문가 집단의 검증을 통해 모형을 수정·보완하고, 최종적으로 실과 실천적 문제 중심 수업설계 모형을 완성하였다. 연구 결과, 실과 실천적 문제 중심 수업설계 모형은 '목표 설정하기, 평가 계획하기, 학습활동 계획하기'의 3단계로 구성된 모형의 초안에서 전문가 검증을 거쳐 '실천적 문제 설정하기, 목표 설정하기, 평가 계획하기, 학습활동 계획하기'의 4단계로 최종적으로 모형을 수정·보완하였다. 실과 실천적 문제 중심 수업설계 모형은 전문가 검증을 통해 교사들이 실천적 문제 중심으로 수업을 설계하고자 할 때 구체적인 가이드라인이 될 수 있는 체계적인 템플릿이라고 평가하였다.

• 대한산업공학회지
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• 제28권2호
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• pp.216-222
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• 2002

The ergonomic human model can be considered as a tool for the evaluation of ergonomic factors in vehicle design process. The proper anthropometric data on driver's postures are needed in order to apply a human model to vehicle design. Although studies on driver's posture have been carried out for the last few decades, there are still some problems for the posture data to be applied directly to the human model due to the lack of fitness because such studies were not carried out under the conditions for the human model application. In the traditional researches, the joint angles were evaluated by the categorized data, which are not appropriate for the human model application because it is so extensive that it can not explain the posture evaluation data in detail. And the human models require whole-body posture evaluation data rather than joint evaluation data. In this study a postural evaluation function was developed not by category data but by the concept of the loss function in quality engineering. The loss was defined as the discomfort in driver's posture and measured by the magnitude estimation technique in the experiment using a seating buck. Four loss functions for the each joint - knee, hip, shoulder, and elbow were developed and a whole-body postural evaluation function was constructed by the regression analysis using these loss functions as independent factors. The developed postural evaluation function shows a good prediction power for the driver's posture discomfort in validation test. It is expected that the driver's postural evaluation function based on the loss function can be used in the human model application to the vehicle design process.

• 한국조경학회지
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• 제29권1호
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• pp.100-112
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• 2001

The purpose of this study is to construct the evaluation criteria based on the relative importance and various combination of each evaluation index and then to evaluate urban biotope in terms of conservation of species and habitat. After the standard of evaluation had been developed through the literature review, the relative importance of the evaluation index through expert survey was found out, and the evaluation model of biotope value has been established. The results of this study are as follows; 1) We have constructed the nineteen evaluation criteria through literature reviews, and have provided relative importance to each evaluation index of the diversity of typical species in biotope, afforestation rate, stratification, Hemeroby grads, and the diversity of landscape patterns based on the results of expert survey. and then we have constructed the evaluation system using the relative importance criteria. 2) To evluate urban biotope using the evaluation system constructed, we selected 14 sites. The final evaluation results of each site is as follows; The III grade areas are Seohan and Hwasung high-rise apartment at Beummul-Dong, Korea Men Power /Agency in Sungs 대 industrial zone, the adjacent area of St. Tongil, and Hyomyung elementary school. The II grade areas are the farm land behind the third Anshim Jugong apartment, and Ehyun park. The I grade areas are swampy land in front of Kangchon and Anshim construction site, water space with semi-natural style in front of Gangchon Woobang apartment, forest zone near page Temple at mt. Palgong, the edge area of Jisan and Gosan, and the tendril yard against Anshim middle school. The only grade IV area is the commercial zone near Taegu Department 3) It is highly useful to evaluate urban biotope using the evaluation criteria constructed for this research, the evaluation criteria we developed may be difficult to guarantee the ability for reproduction and recovery, the appearance-number of the rare and endangered species are difficult to estimate urban biotopes. In the future, it is highly useful to evaluate biotope in terms of conservation of species and habitat through its valuation criteria developed in this research and it is necessary to develop the evaluation criteria applicable to estimation of biotope inventory and reproduction of biotope.

• 한국산학기술학회논문지
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• 제9권4호
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• pp.970-979
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• 2008

현재 SOA 기반 소프트웨어의 중요성이 인식되면서 국내외 SOA 기반 소프트웨어 시장이 급격히 증가하고 있는 추세이다. 이에 따라 SOA 기반 소프트웨어에 대한 고신뢰성과 고품질 소프트웨어의 요구가 증대되고 있다. 본 연구에서는 SOA 기반 소프트웨어의 기능성 품질을 평가하기 위해 품질을 시험하여 측정하고 그 결과를 적절한 기준에 따라 판정하는 방법에 대해 연구를 수행하고 평가 사례를 제시하여 평가 방법을 명확히 제시하였다. 본 연구를 통해 SOA 기반 소프트웨어의 기능성 품질 향상을 유도하고 국제 표준을 수용하는 전략기술 개발을 통해 객관성과 활용도를 높일 수 있을 것으로 기대한다.

• 대한인간공학회지
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• 제26권3호
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• pp.101-109
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• 2007

This research is for developing a usability evaluation model based on customer sensation using Quality Function Deployment, which evaluates the relationship between consumer sensation and usability among the physical design factors of dishwashers. Four aspects of the evaluation model; overall sensation factors, detail sensation factors, usability evaluation factors and physical design factors of products were analyzed in three sequential processes of QFD. The sensation evaluation factors and the usability evaluation factors were created from regression analysis of the results of the sensation and usability test. Moreover, thirty-one physical design factors selected through group discussion of ergonomist and manufacturers. Among them, 19 physical design factors according to priority were applied to evaluation model using QFD. With the evaluation model using four aspects, physical design factors influencing user sensation were generated. These factors were 'alarm sound', 'dishwasher size', 'button size' and 'display size'. Consequently, the degree of influences was tested. Design guidelines for dishwashers were derived from finally generated physical design factors.

• 한국학교ㆍ지역보건교육학회지
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• 제7권
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• pp.19-32
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• 2006

성공적이고 효과적인 학교 성교육을 위하여 참여형 기법의 중요성이 부각되고 있는 가운데, 지역사회 참여형 연구 기법이 주목받고 있다. 지역사회 참여형 기법은 피교육자가 교육프로그램의 기획, 수행, 평가 전 과정에 동등한 협력자로서 적극적으로 참여할 수 있도록 여건을 구비하고 제공하는 것이 그 목적이자 방법이다. 사회생태학 모델은 이러한 참여형 기법을 적용할 때 유용한 도구로서, 사전조사 및 교육 프로그램 기획 뿐 아니라 평가도구로서의 가능성도 가지고 있다. 학교 성교육의 과제 중 하나인 교육요구와 실제 간의 간극 해소를 위한 시도의 일환으로, 본 논문은 지역사회 참여형 연구의 주요 개념과 원칙, 사회생태학 모델의 원리를 설명하고, 실제 학교 성교육 평가 사례에 입각한 사회생태학 모델의 용례를 제시하였다. 아울러, 학교 성교육 현장에서 프로그램 기획 및 평가에 참여형 기법을 통하여 사회생태학 모델을 적용하는 방안을 논의하였다.

• 한국측량학회지
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• 제38권2호
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• pp.153-163
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• 2020

After launching the GOCE (Gravity Field and Steady-State Ocean Circulation Explorer) which obtains high-frequency gravity signal using a gravity gradiometer, many research institutes are concentrating on the development of GGM (Global Geopotential Model) based on GOCE data and evaluating its precision. The precision of some GGMs was also evaluated in Korea. However, some studies dealt with GGMs constructed based on initial GOCE data or others applied a part of GNSS (Global Navigation Satellite System) / Leveling data on UCPs (Unified Control Points) for the precision evaluation. Now, GGMs which have a higher degree than EGM2008 (Earth Gravitational Model 2008) are available and UCPs were fully established at the end of 2019. Thus, EIGEN-6C4 (European Improved Gravity Field of the Earth by New techniques - 6C4), GECO (GOCE and EGM2008 Combined model), XGM2016 (Experimental Gravity Field Model 2016), SGG-UGM-1, XGM2019e_2159 were collected with EGM2008, and their precisions were assessed based on the GNSS/Leveling data on UCPs. Among GGMs, it was found that XGM2019e_2159 showed the minimum difference compared to a total of 5,313 points of GNSS/Leveling data. It is about a 1.5cm and 0.6cm level of improvement compare to EGM2008 and EIGEN-6C4. Especially, the local biases in the northern part of Gyeonggi-do, Jeju island shown in the EGM2008 was removed, so that both mean and standard deviation of the difference of XGM2019e_2159 to the GNSS/Leveling are homogeneous regardless of region (mountainous or plain area). NGA (National Geospatial-Intelligence Agency) is currently in progress in developing EGM2020 and XGM2019e_2159 is the experimentally published model of EGM2020. Therefore, it is expected that the improved GGM will be available shortly so that it is necessary to verify the precision of new GGMs consistently.

• Nuclear Engineering and Technology
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• 제29권1호
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• pp.15-24
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• 1997

The design and evaluation of a digital U-tube steam generator level controller of nuclear power plants, which uses model-based compensators to offset the inverse response behavior of water level, is described. Included is a review of steam generator level dynamics, a simulation model that replicates the effects of feedwater and steam flowrate as well as temperature on steam generator level, the design of both the compensators and the overall controller, and the results of simulation studies in which the performances of this model-based controller and existing analog ones were compared. The proposed digital steam generator level controller is stable and its use significantly improves the controllability of steam generator level.