• 한국정보통신학회:학술대회논문집
• /
• 한국정보통신학회 2016년도 추계학술대회
• /
• pp.139-141
• /
• 2016

콜센터에 국가표준(KS)이 도입되면서 고객들이 질 좋은 서비스를 이용할 수 있을 것으로 기대된다. 본 연구는 Fuzzy AHP(Analytic Hierarchy Process) 기법을 이용하여 콜센터 서비스 인증 심사기준의 상대적 중요도를 평가하기 위해서 수행되었다. Fuzzy AHP는 AHP 기법에 Fuzzy 집합 이론을 결합한 것으로, 의사결정과정에서 발생할 수 있는 애매모호함과 불확실성을 해결하기 위하여 제시된 방법이다. 본 연구에서 제시한 평가방법론은 현재 국가적으로 추진되고 있는 KS 서비스 인증제도에서도 응용될 수 있을 것으로 본다.

• Geomechanics and Engineering
• /
• 제29권3호
• /
• pp.331-338
• /
• 2022

Face stability analyses provides the most probable failure mechanisms and the understanding about parameters that need to be considered for the evaluation of ground movements caused by tunneling. After the Upper Bound Method (UBM) solution which can consider the influence of seepage forces and depth-dependent effective cohesion is verified with the numerical experiments, the probabilistic model is proposed to calculate the unbiased limiting tunnel collapse pressure. A reliability analysis of a shallow circular tunnel driven by a pressurized shield in a frictional and cohesive soil is presented to consider the inherent uncertainty in the input parameters and the proposed model. The probability of failure that exceeding a specified applied pressure at the tunnel face is estimated. Sensitivity and importance measures are computed to identify the key parameters and random variables in the model.

• 산업경영시스템학회지
• /
• 제43권3호
• /
• pp.216-227
• /
• 2020

The purpose of this paper is to identify a relative importance and priority of the factors of Competencies of project team member. It aims to present the differential competency factors from a differentiated perspective by applying the Leadership Development Questionnaire, which is the competency dimension required for manager, to team member. (1) Background: The diverse needs of customers and companies, and the uncertainty, complexity, ambiguity, and volatility of the environment surrounding the company in the era of the Fourth Industrial Revolution threaten the survival of company. In this respect, companies should implement the project management approach and strive to increase the capabilities of each team member. (2) Methods: AHP method was used to prioritize which factors were considered more importance level and the gap of relative importance level between project manager group and team members group. (3) Results: In the analysis of the relative importance of the upper class, weights were derived in the order of managerial competence, intellectual competence, and emotional competence. The sub-factor that respondents prioritize was communication as the 1st priority, and it was analyzed in the order of strategic perspective, achieving, critical analysis and judgement, and vision and imagination. There were some differences in the ranking of the relative importance of achieving and vision and imagination attributes between the PM group and TM group, it was analyzed that there was no significant difference overall. (4) Implications: The results of this study confirmed the recognition that team members are required to have the same competencies as the project manager. And based on the priorities of the competencies required of team members, companies are expected to cultivate professional and competent team members, and expand the roles and authority of team members so that they can actively carry out projects.

• 대한기계학회논문집A
• /
• 제41권5호
• /
• pp.381-389
• /
• 2017

마르코프체인 시뮬레이션으로 추출한 점을 기반으로 커널 밀도함수를 구성하고 중요도 추출함수로 가정하였다. 크리깅 근사모델은 한계상태식 근방에서 상세히 구성되었다. 고장확률은 크리깅 근사모델에 대해 중요도 추출법을 수행하여 계산하였다. 커널 밀도함수가 한계상태식의 근방에서 더 많은 점을 추출할 수 있도록 기존의 방법을 개선하였다. 커널 밀도함수의 파라메터를 찾기 위한 안정적인 수치계산 방안이 제시된다. 크리깅 근사모델의 불확실성으로 인해 계산된 고장확률이 변경될 가능성을 계산하여, 크리깅 근사모델의 완성도를 평가하였다.

• 대한산업공학회지
• /
• 제43권2호
• /
• pp.90-99
• /
• 2017

As the importance of R&D has increased, there have been various efforts to apply the quality management principles and tools to R&D activities in order to manage them effectively. The R&D sector differs from other value chains, so it may be difficult to apply quality management without proper considerations of R&D characteristics. This study describes the characteristics of R&D as high uncertainty and risk, diversity of R&D types, project-based activities, importance of strategic goals and business models, and importance of intangible assets. Three well accepted R&D quality management models are reviewed and implications for quality management and R&D characteristics are summarized. Based on these findings, the management targets of R&D quality management are classified into management level (organization, project) and management focus (process, output), and the contexts of R&D quality management are classified into R&D type (research, development) and market/customer requirement clarity (fluid, specific), and appropriate R&D quality management activities in each situations have been suggested.

• 한국기계가공학회지
• /
• 제19권12호
• /
• pp.70-79
• /
• 2020

This paper describes a comparative study of characteristics of probabilistic design using various reliability analysis methods in the structure design of an automatic salt collector. The thickness sizing variables of the main structural member were considered to be random variables, including the uncertainty of corrosion, which would be an inevitable hazard in the work environment of the automatic salt collector. Probabilistic performance functions were selected from the strength performances of the automatic salt collector structure. First-order reliability method, second-order reliability method, mean value reliability method, and adaptive importance sampling method were applied during the reliability analyses. The probabilistic design performances such as reliability probability and numerical costs based on the reliability analysis methods were compared to the Monte Carlo simulation results. The adaptive importance sampling method showed the most rational results for the probabilistic structure design of the automatic salt collector.

• Journal of Korean Biological Nursing Science
• /
• 제13권1호
• /
• pp.16-22
• /
• 2011

Purpose: Hand washing has received renewed emphasis in recent years as Swine flu epidemic threaten health of public. This study aimed to describe measures used to prevent new types of influenza (NTI); describe hand washing frequency; and analyze the relationship of hand washing to locus of control, uncertainty, and state anxiety. Methods: One hundred thirty three adults participate in the questionnaire survey in which participants indicated measures they used to prevent NTI, frequency of handwashing for the prevention of NTI. They also responded to questions related to locus of control, uncertainty and state anxiety. Data were analyzed using descriptive statistics, Pearson correlation and multiple regression. Results: A majority (66.9%) of the participants indicated that handwashing was an important measure to prevent NTI. Importance of hand-washing was related the highest among the measures they used and it was significantly related to participants who had high score in internal locus of control. Other significant factor to the hand-washing behavior was state anxiety, which explained 6.9% of the frequency. Conclusion: According to the results of this study, majority of participants indicated that handwashing was one of the most important measures to prevent NTI. Nurses need to continue educating public the importance of handwashing and pay attention to personal characteristics such as internal locus of control and anxiety to promote hand-washing.

• 정보보호학회논문지
• /
• 제27권4호
• /
• pp.913-921
• /
• 2017

스마트폰의 대중화 보급은 모바일 인터넷 사용자를 증가시켰고 이로 인해 모바일 전자상거래 서비스도 급속히 성장하고 있다. 이런 급격한 성장과 더불어 모바일커머스 사용자의 보안 및 개인정보유출에 대한 불안감도 더욱더 커지고 있다. 따라서 모바일커머스의 지속적인 확대와 성장을 위해서는 보안과 개인정보보호가 무엇보다 중요하다는 인식하에 보안과 개인정보보호가 사용자의 모바일커머스 사용의도에 미치는 영향력을 심도 있게 분석하고자 하였다. 이에 본 연구에서는 모바일커머스 방문 경험자를 중심으로 설문조사를 하여 보안과 개인정보보호 인식이 지각된 위험과 지각된 신뢰, 사용의도 간에 미치는 영향을 분석하였다. 연구결과, 보안과 개인정보보호는 모바일 상거래에 대한 불안과 불확실성을 감소시킴으로써 사용자들의 모바일커머스에 대한 신뢰향상에 기여하며, 이런 결과가 사용의도를 높이는 심리적 기제에 영향을 미치는 중요한 요인으로 나타났다.

• Nuclear Engineering and Technology
• /
• 제54권12호
• /
• pp.4809-4818
• /
• 2022

The decommissioning project of a nuclear facility is a large-scale process that is expected to take about 15 years or longer. The range of risks to be considered is large and complex, then, it is expected that various risks will arise in decision-making by area during the project. Therefore, in this study, the risk family derived from the Decommissioning Risk Management (DRiMa) project was reconstructed into a decommissioning project risk profile suitable for the Kori Unit 1. Two criteria of uncertainty and importance are considered in order to prioritize the selected 26 risks of decommissioning project. The uncertainty is scored according to the relevant laws and decommissioning plan preparation guidelines, and the project importance is scored according to the degree to which it primarily affects the triple constraints of the project. The results of risks are divided into high, medium, and low. Among them, 10 risks are identified as medium level and 16 risks are identified as low level. 10 risks, which are medium levels, are classified in five categories: End state of decommissioning project, Management of waste and materials, Decommissioning strategy and technology, Legal and regulatory framework, and Safety. This study is a preliminary assessment of the risk of the decommissioning project that could be considered in the preparation stage. Therefore, we expect that the project risks considered in this study can be used as an initial data for reevaluation by reflecting the detail project progress in future studies.

• 한국농업기계학회:학술대회논문집
• /
• 한국농업기계학회 1993년도 Proceedings of International Conference for Agricultural Machinery and Process Engineering
• /
• pp.1254-1263
• /
• 1993

Representing knowledge uncertainty , aggregating evidence confidences , and propagation uncertainties are three key elements that effect the ability of a rule-based expert system to represent domains with uncertainty . Fuzzy set theory provide a good mathematical tool for representing the vagueness associated with a variable when , as the condition of a rule , it only partially corresponds to the input data. However, the aggregation of ANDed and Ored confidences is not as simple as the intersection and union operators defined for fuzzy set membership. There is, in fact, a certain degree of compensation that occurs when an expert aggregates confidences associated with compound evidence . Further, expert often consider individual evidences to be varying importance , or weight , in their support for a conclusion. This paper presents a flexible approach for evaluating evidence and conclusion confidences. Evidences may be represented as fuzzy or nonfuzzy variables with as associat d degree of certainty . different weight can also be associated degree of certainty. Different weights can also be assigned to the individual condition in determining the confidence of compound evidence . Conclusion confidence is calculated using a modified approach combining the evidence confidence and a rule strength. The techniques developed offer a flexible framework for representing knowledge and propagating uncertainties. This framework has the potention to reflect human aggregation of uncertain information more accurately than simple minimum and maximum operator do.