• Proceedings of the Korea Water Resources Association Conference
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• 2012.05a
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• pp.158-158
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• 2012

기후시나리오는 시 공간 해상도가 낮아 결과를 직접적으로 활용하기에는 한계가 있다. 따라서 국내외적으로 지역기후모형(RCM)을 통해 고해상도 기후시나리오를 생산하여 각 분야의 영향평가 시 활용하고 있다. 그럼에도 불구하고 기후모형이 갖는 한계로 인하여 시나리오는 관측자료에 비해 과소모의되는 경향이 발생하기 때문에 이를 고려할 수 있는 편의보정 과정이 필요하다. 하지만 국내 외적으로 여러 편의보정기법이 존재하며, 편의보정기법 선정에 따라 최종 평가 결과에 영향을 미칠 수 있다. 특히 수문 분야에서 활용하기 위해 기후시나리오 중 가장 중요한 요건은 일단 관측치의 월 및 계절별 변동성이 잘 반영되는 가이며, 두 번째는 극한 사상(high, low)을 얼마나 잘 모의하여 홍수와 가뭄을 평가하는데 용이한 가이다. 따라서 본 연구에서는 기존 편의보정 기법의 불확실성을 평가하고, 이를 통해 수문학적 활용을 위한 고해상도 기후시나리오의 편의 보정 기법을 제안 및 적용성 평가를 수행하고자 한다. 기존 편의보정기법의 적용성을 평가하기 위해 Change factor method, Quantile mapping, Weather Generator 등을 이용하였다. 이를 위해 역학적으로 상세화된 기후시나리오와 기상청 관할의 기상관측소의 최고기온, 최저기온, 평균기온, 강수량 등의 기후 자료를 수집하였다. 평가를 위해 선정한 관측소 지점은 1951년부터 강수 및 기온 자료가 존재하는 기상청 관할 기상관측소를 토대로, 지역적인 평가를 위해 최종적으로 서울, 강릉, 대구, 부산, 목포, 광주, 전주, 울산, 추풍령을 선정하였다. 이 중 1956~1980년을 과거기간으로 1981~2005년를 미래기간으로 가정하고, 편의 보정 기법 적용하여 기온과 강수량의 통계적 특성을 비교 분석하였으며 평가결과, 편의보정 기법의 따른 한계점들을 도출하였다. 한계점들을 개선하기 위해 본 연구에서 제안한 편의 보정기법은 강수량을 크게 3단계(극한 호우사상, 강수일수, 평균 표준편차 보정)로 나누어 편의보정을 실시하는 것으로 극한 호우사상을 위해서는 연최대치 계열을 이용한 회귀식을 이용하여 보정하였고, 비초과확률을 이용하여 RCM 결과값의 강수일수를 보정하였다. 최종적으로 나머지 강수시나리오에 대해서 평균과 표준편차를 보정하여 최종시나리오를 생산 및 적용성을 평가하였다. 평가 결과, 기존 편의보정기법의 단점을 극복할 수 있었으며, 이를 통해 향후 수문학 분야에 적용하여 신뢰성 있는 기후변화 영향평가를 수행될 수 있을 것이다. 제안한 편의보정 기법 및 평가 결과에 대한 자세한 내용은 발표 시 제시하고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.447-450
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• 2011

현대 사회의 소프트웨어 사용편의성 평가는 기존의 사용편의성 평가 방법론들보다 더 효율적이고 체계적인 방법론들이 나와야 한다. 이 논문에서는 정성적이고 정량적인 두 가지 측면을 모두 고려한 체계적인 컴포넌트 기반의 소프트웨어 사용편의성 평가 방법론을 제시하고 있다. 소프트웨어의 사용편의성을 평가하기 위하여 정량적인 측면인 수행도와 정성적인 측면인 사용자 만족도를 모두 고려하게 된다. 사용자 만족도에는 감성, 학습성, 가시성으로 구성되고 수행도는 효율성과 효과성으로 구성된다.

• Proceedings of the Korea Information Processing Society Conference
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• 2004.05a
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• pp.841-844
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• 2004

본 논문은 성인과 다른 기저를 가진 미취학 연령인 유아를 대상으로 하는 웹사이트들의 인터페이스 가이드라인을 제공하는데 목적이 있다. 가이드라인의 타당성을 검증하기 위해서 관련 연구를 통해 평가항목을 선정하고 현재 가장 많은 이용자를 보유하고 있는 유아사이트를 대상으로 사용 편의성을 평가하였다. 평가 방법은 평가 대상이 인지능력과 언어발달이 완전하지 않은 미취학 연령인 유아인 점을 고려하여 관찰 및 모니터링 방법으로 사용성 평가를 하였으며 평가결과를 토대로 인터페이스 설계 가이드라인을 제안했다.

• Journal of Dental Rehabilitation and Applied Science
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• v.30 no.1
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• pp.9-15
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• 2014

Purpose: Implant engine system is composed of the handpiece, micromotor, control box and foot switch. The aim of this study was to evaluate the satisfaction of the implant engine systems in terms of convenience-design and to examine the relation with the experience of implant surgery. Materials and Methods: Three implant systems were evaluated: SurgicXT/X-SG20L, INTRAsurg300/CL3-09, XIP10/CRB26LX. For this comparative study, 30 dentists were included and the satisfaction was measured using a structured questionnaire. One-way analysis of the variance (ANOVA) and multiple regression analysis were used within and between the groups. Results: Total satisfaction differed from each other (P < 0.05). The convenience score was more associated with the total satisfaction than design score. Moreover, the implant surgery experience affected several assessments. Conclusion: Collectively, in a cross-sectional study model, the design of implant system significantly affects its total satisfaction and the surgery experience can be influential factor in the evaluation of implant engine system.

• Journal of Korean Society of Transportation
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• v.34 no.6
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• pp.499-509
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• 2016

The pedestrian traffic flow has more complicated microscopic features than vehicular traffic flow. Without any designated lanes or any guidance, pedestrians naturally move and change their routes in two dimensional domain with ease. Thus the assessment of pedestrian comfort level should be considering the microscopic features of pedestrian flow. This study is aimed at developing pedestrian comfort criteria based upon pedestrian flow simulation model. This study suggests three criteria to determine pedestrian comfort level; the deviation of route, the acceleration of walk, and the number of collision. Each criterion, which can address the unique walking patterns of pedestrian flow, is represented as each different function with respect to traffic flow rate. The criteria can be the additional indicators to determine the level of service of pedestrian flow together with traffic flow rate and walking speed.

• Journal of the Korea Convergence Society
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• v.11 no.3
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• pp.187-194
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• 2020

This paper is a study to improve the usability due to the commercialization of open source-based knitting machines. Based on the analysis, FGD was conducted to derive considerations and to evaluate the evaluation factors based on the derived contents. Based on the evaluation principles derived, tasks were created for each UI (user interface) situation to measure execution time and error frequency. The analysis results show that model C has the highest user-friendliness in terms of learning, conciseness, cognitive fitness, convenience, state maintainability, and intuition. Ease of use will be improved.

• Journal of Internet of Things and Convergence
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• v.9 no.2
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• pp.1-9
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• 2023

This study was conducted for the purpose of improving the usability of the product through the usability evaluation of the voice tag reader to improve the life convenience of the visually impaired. Perceived usability evaluation was conducted for 19 evaluation items based on the evaluation model considering the usability principle and the characteristics of the visually impaired. A total of 50 participants were included for the analysis. As a result of the perceived usability evaluation of the visually impaired, the safety of the voice tag reader, voice and sound quality, and accuracy of voice information were relatively satisfactory. It was found that the reader received a low evaluation in terms of efficiency in use, including the size and weight of the reader, and the convenience of carrying and storing. For the usability improvement, the procedure for using a product needs to be more simplified, and it would be helpful to input and supply tags for commonly used objects in advance.

• Journal of Korean Home Economics Education Association
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• v.19 no.1 s.43
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• pp.47-64
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• 2007

The purpose of this study was to develop, apply and evaluate the teaching learning plan for disabled experimental activity to evaluate the accessibility of middle school experimental facilities. Three main resources such as 2 hours teaching learning plan for disabled activity, recording sheets and evaluation sheets had been developed. The process plan had been applied 214 senior students in 7 middle schools purposely selected by areas, constructed years, number of stories of school during November to December, 2005. General accessible levels of middle school facilities was somewhat inadequate especially exterior slops, toilets, bowls were the most unaccessible ones. Most of all students had accidents and/or injuries in school environments from minor to major ones. Male Students were more likely than female Students to get injuries. Students experience of accidents and injuries and awareness of inconvenience, danger, needed facilities supported. the result of the accessibility levels evaluated by disabled activities. Students were generally satisfied with and positive to the teaching learning process plan developed and applied in this study. Students had improved critical Perspectives as well as awareness of inaccessible chances in the school facilities through the experimental process. The evaluation as differed by school characteristics and students' interests in disability.

• The Journal of the Korea Contents Association
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• v.17 no.1
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• pp.233-241
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• 2017

Annual reports on the ease of doing business, published from the World Bank, measure the regulations of economies that enhance business activity and those that constrain it by the 10 areas of business life-cycle. It then calculates the scores and ranks in each of the areas and in aggregate. The aggregate scores are the summation of the scores in the areas. This means that all the areas have the same weight. As evaluation results can vary greatly by the areas used and their weights, it is possible that the areas emphasized by small and medium-sized enterprises(SMEs) of Korea are not appropriately reflected in the evaluation results. From the viewpoint of small and medium-sized Korean enterprises, this paper tries to compare the ease of doing business of economies via determining the weights of the 10 areas. Through an AHP-based survey on Korean professors of a business school and SME CEOs, the weights are determined and then applied to the calculation of the aggregate scores and the ranks of the economies. While the changes in the top and bottom ranks are relatively small, some cases of big changes are found in the middle ranks.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.38 no.1
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• pp.159-165
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• 2018

In recent years, universal design concepts have been introduced that are designed to make everybody more comfortable and safe to use for products, buildings, environments, services, and so on. In the case of urban railroad history, it is important to maintain facilities that incorporate the universal design concept because it is an important facility that serves as a base of city life and there are various users. This research is the last annual task of 5 years as part of the project of "Development of Technique to Improve the Convenience of Urban Railway History User" by the National Institute of Transportation Technology Promotion Agency. The purpose of this study is to develop criteria and method of facilities convenience evaluation based on UD and to evaluate user convenience by selecting test bed station. For this purpose, the UD principle of the historic facilities of Weihai Urban Railway was established and detailed evaluation criteria were presented. As a result of evaluating the test bed history using the 5-point Likert scale of the joint research institute / railway operating agency / expert, 50.3% of convenience improvement was achieved. As a result of evaluating the applicability according to the UD principle, 48.7% Respectively. The evaluation criteria and methodology based on the UD suggested in this study is a quantitative method for evaluating UD application of urban railway facilities in the future.