• Geomechanics and Engineering
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• 제12권1호
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• pp.35-52
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• 2017

In order to evaluate the grouting effects of water-rich fault in tunnels systematically, a feasible and scientific method is introduced based on the extension theory. First, eight main influencing factors are chosen as evaluation indexes by analyzing the changes of permeability, mechanical properties and deformation of surrounding rocks. The model of evaluating grouting effects based on the extension theory is established following this. According to four quality grades of grouting effects, normalization of evaluation indexes is carried out, aiming to meet the requirement of extension theory on data format. The index weight is allocated by adopting the entropy method. Finally, the model is applied to the grouting effects evaluation in water-rich fault F4-4 of Qingdao Jiaozhou Bay Subsea Tunnel, China. The evaluation results are in good agreement with the test results on the site, which shows that the evaluation model is feasible in this field, providing a powerful tool for systematically evaluating the grouting effects of water-rich fault in tunnels.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2010년도 학술발표회
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• pp.591-595
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• 2010

Conventional methods of model evaluation usually rely only on model performance based on a comparison of simulated variables to corresponding observations. However, this type of model evaluation has been criticized because of its insufficient consideration of the various uncertainty sources involved in modeling processes. This study aims to propose an extended model evaluation method using multiple assesment indices (MAIs) that consider not only the model performance but also the model structure and parameter uncertainties in rainfall-runoff modeling. A simple reservoir model (SFM) and distributed kinematic wave models (KWMSS1 and KWMSS2 using topography from 250m, 500m, and 1km digital elevation models) were developed and assessed by three MAIs for model performance, model structural stability, and parameter identifiability. All the models provided acceptable performance in terms of a global response, but the simpler SFM and KWMSS1 could not accurately represent the local behaviors of hydrographs. In addition, SFM and KWMSS1 were structurally unstable; their performance was sensitive to the applied objective functions. On the other hand, the most sophisticated model, KWMSS2, performed well, satisfying both global and local behaviors. KMSS2 also showed good structural stability, reproducing hydrographs regardless of the applied objective functions; however, superior parameter identifiability was not guaranteed. Numerous parameter sets could lead to indistinguishable hydrographs. This result supports that while making a model complex increases its performance accuracy and reduces its structural uncertainty, the model is likely to suffer from parameter uncertainty. The proposed model evaluation process can provide an effective guideline for identifying a reliable hydrologic model.

• Journal of the Korean Data and Information Science Society
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• 제23권1호
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• pp.143-150
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• 2012

A대학교에서 상대평가로 성적을 부여하는 강의의 강의평가 자료를 대상으로 강좌특성이 강좌별 강좌평가점수에 미치는 영향을 분석하였다. 분석 결과 강좌별 강좌평가점수는 강좌 수강생의 평균학년과 남학생비율이 높을수록, 수강인원이 적을수록 높게 나타났다. 이러한 결과를 바탕으로 평가자의 학년과 성별의 효과를 통제할 수 있는 평가모형을 제안하고 제안한 사례를 통하여 평가모형의 수행능력을 고찰하였다.

• 한국산업정보학회논문지
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• 제11권5호
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• pp.119-131
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• 2006

This paper proposes a mathematical model for web site service quality evaluation, which first applies analytic hierarchy process(AHP) to determine the weights of evaluation indexes of web site service quality and then analyzes web site service synthetically by means of fuzzy methodology. In this case, experts' knowledge cannot only be used but its subjective component can be eliminated. Hence, the web site service quality can be analyzed and evaluated more reasonably. After establishing this model, the experiment results will be given, which verify the feasibility and validity of the proposed model. The model proposed here is very simple and easy to implement and can provide a useful way to help developers evaluate their web site service quality efficiently.

• 한국안전학회지
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• 제18권2호
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• pp.73-78
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• 2003

In order to improve the safety performance oi construction projects, effective and corporative safety management program between head office and job site must be implemented. And its performance must be measured and analyzed for the identification of the problems in the safety management area. This study proposes a previous evaluation model of safety performance for the large construction firm in order to enhance their safety level. The fundamental data for proposed model is based on the past research(Son 2002), which is structured of evaluation criteria. weighted factor. statistical evaluation formula. The model would help the firm management in identifying the weak areas of safety performance in terms of the degree performing certain safety tasks. It is expected that the model could contribute to achieving the "zero accident" level.ot; level.

• 농촌계획
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• 제9권2호
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• pp.29-37
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• 2003

The objectives of this study are to develop an agricultural drought evaluation model based on administrative boundaries and to assist the effective drought-related decision-making of local governments. The model which was named ADEM(Administrative Drought Evaluation Model for Paddies) is designed to simulate daily water balance between available water quantities from various agricultural water facilities such as reservoirs, wells, pump stations, etc. and water requirements in paddies. And in order to numerically describe the agricultural drought severity, two indices were defined; One is ADFP(Agricultural Drought Frequency for Paddies) which is calculated with a frequency analysis of monthly water deficit, and the other is ADIP(Agricultural Drought Index for Paddies) with a scale of $-4.2{\sim}+4.2$. The developed model was applied to Yeoju district and showed good correspondence with the historical records of drought.

• Journal of Platform Technology
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• 제11권6호
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• pp.3-12
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• 2023

In today's system operation, it is difficult to detect failures and take immediate action in the case of a shortage of manpower compared to the number of equipment or failures in vulnerable time zones, which can lead to delays in failure recovery. In addition, various algorithms exist to detect abnormal symptom data, and it is important to select an appropriate algorithm for each problem. In this paper, an ensemble-based isolation forest model was used to efficiently detect multivariate point anomalies that deviated from the mean distribution in the data set generated to predict system failure and minimize service interruption. And since significant changes in memory space usage are observed together with changes in CPU usage, the problem is solved by using LSTM-Auto Encoder for a collective anomaly in which another feature exhibits an abnormal pattern according to a change in one by comparing two or more features. did In addition, evaluation indicators are set for the performance evaluation of the model presented in this study, and then AI model evaluation is performed.

• 대한인간공학회지
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• 제18권3호
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• pp.153-169
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• 1999

The design of nuclear control room is advancing toward totally computer based human system interfaces (HSI). Computer based interfaces offer the opportunity to provide improved support of operator performance, but if not properly deployed, can introduce new challenges. This paper reviews the Westinghouse AP-600 Human Factors Verification and Validation Plan selected for HSI evaluation model of Korea next generation nuclear control rooms. The AP-600 HSI evaluation model addressed 15 evaluation issues considering major activity class of operator and task complexity factors. This paper also describes the test procedures experimenters should follow to evaluate the addressed issues.

• 영재교육연구
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• 제22권3호
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• pp.639-662
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• 2012

본 연구는 미술영재 교육과정 평가를 위한 기초 연구로서, 미술영재 교육과정 평가의 이론적 기초와 평가모형의 기본 틀을 제안하는 것을 목적으로 하였다. 이를 위해 미술영재교육의 최근 동향과 지향점을 살펴보고 이를 기반으로 미술영재 교육과정 평가에 적합한 모형을 탐색하여 미술영재 교육과정 평가모형의 기본 틀을 개발하였다. 최근 미술영재교육에서는 창의성에 대한 인식 변화에 따라 미술 잠재성을 가진 학습자가 자신만의 미술을 찾아가는 것을 강조하고 있으며, 분야, 영역, 개인의 상호작용 속에서 맥락적으로 교육이 이루어져야 한다는 점을 강조한다. 이러한 점에서 볼 때 미술영재 교육과정 평가는 판단보다는 의사결정을 위한 정보제공 관점을 취해야 하며 다차원적인 측면을 관계적으로 평가할 수 있어야 한다. 이에 따라 본 연구에서는 의사결정 지향 접근법의 대표적인 평가모형인 CIPP 모형을 기반으로 미술영재 교육과정 평가의 기본 틀을 제안하였다. 그리고 이를 바탕으로 미술영재 교육과정 평가에서 평가자의 역할을 논의하였다.

• 한국인터넷방송통신학회논문지
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• 제21권2호
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• pp.157-167
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• 2021

정보기술의 중요성에도 불구하고 정보화 성과 관리 연구와 성과 관리 방법은 매우 미흡하다. 본 논문에서는 협업과 공정상의 복잡도가 높은 조선해양산업의 특성을 반영한 전사적 정보화 성과 평가 및 관리 모형인 SSU-ITPM 모형을 제시하였다. 본 모형은 정보화 기획 및 사업관리, 정보화 현업 활용 평가, 정보화 활용 품질 평가, 정보화 사용자 만족도 평가, 정보화 효과 달성 평가로 구성하였다. 또한 D사 적용 사례를 통해 해당 모형의 실무적 활용 타당성을 확인하였다. 본 연구는 조선해양 분야와 같은 ETO 플랜트 기반 기업의 정보화 성과관리에 실무적 참조 모형을 제공할 것으로 사료된다.