• Nuclear Engineering and Technology
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• 제19권4호
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• pp.266-278
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• 1987

이 논문은 원자력발전소의 안전성 규제를 위한 성능 기준을 설정하는데 야기되는 몇가지 문제점을 다룬다. 저층 성능 기준을 설정하는 것이 고충 성능 기준을 설정하는 것보다 훨씬 더 어려운 과제이기 때문에, 저층 성능 기준은 보다 쉽게 결정될 수 있는 고충 성능기준으로부터 그와 부합되게 유도되어야 한다. 본 논문은 또한, 평균치-평균치 mapping에 의거한 신뢰도 할당 방법론을 상태변수가 불확실한 stochastic 다목적 최적화 문제로 적용 확장함으로써 성능 기준의 불확실성을 규명하는 몇 가지 방법을 제안한다.

• 한국지진공학회논문집
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• 제18권5호
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• pp.231-240
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• 2014

This study reviews the status and validity of seismic design criteria (SDC) for major facilities in Korea, which are composed of performance criteria and technical standard. Various facilities with different seismic design response spectra are analyzed to identify their seismic performance and necessity of eventual retrofit. The results are used to derive improvement directions of SDC. It is also concluded that the technical standard should be improved after the revision of the performance criteria.

• ETRI Journal
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• 제28권6호
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• pp.777-786
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• 2006

Since the introduction of competition in the telecommunication market due to the growth of the interconnection between heterogeneous networks, particularly fixed and mobile networks, the interconnection charge based on traffic-sensitive (TS) and non-traffic-sensitive (NTS) costs has become more important. Although there have been many studies of the public switched telephone network (PSTN), previous studies of TS and NTS costs in mobile networks are very few. In this paper, as a pilot study, we propose three criteria and a procedure for the classification of TS and NTS costs based on mobile systems. The three criteria are the following: function type, investment requirement, and main exhaust driver. Moreover, for a CDMA mobile system, strongly TS, strongly NTS, and mixed components are classified by the proposed criteria and procedure. The proposed criteria, procedure, and classification can provide a systematic and useful guideline to decide the scope of mobile facilities and to determine the terminating cost on mobile networks from fixed networks.

• 한국해양공학회지
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• 제19권2호
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• pp.47-52
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• 2005

This paper introduces a procedure for free span and fatigue analysis of offshore pipelines per DNV-RP-F105, 2002. The new method includes the axial force and deflection load in pipelines. The screening criteria were established to calculate the allowable span lengths in the new design codes. The screening criteria allows a certain amount of vortex-induced vibration due to wave and current loading. However, the induced pipe stresses are very small and usually below the limit stresess of typical S-N curves. In contrast, the conventional criteria did not allow any vortex-induced vibration in the free span of pipelines. Thus, the screening criteria yields reduced allowable span lengths. A simplified procedure was established to calculate the fatigue damage due to long-term current distribution. The long-term current statistics was assumed with a 3-parameter Weibull distribution. The fatigue damage was estimated for the span lengths obtained from the screening criteria for various conditions. Sample calculations show the effect of axial force for various boundary conditions. Comparisons with conventional criteria are included.

• 대한가정학회지
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• 제25권4호
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• pp.33-45
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• 1987

The purpose of this study is to analyze the factorial structure of the criteria on clothing selection of the working women, and then to provide the date to develop an instrument to measure the criteria on clothing selection. A total of 877 samples were selected from unmarried female in the twenties. Data were analyzed using factor analysis, Pearson's product-mement correlation coefficients, content analysis and Cronbach's α. The results of the study were as follows; 1. There were identified 7 factors as the clothing selection criteria of the working women; Fashion, Practicality, Modesty, Appearance, Service, Comfort, and Impulse purchase. 2. Comparing with the previous results, we confirmed that the criteria on clothing selection was made up of at least 8 factors; Practicality, Comfort, Brand or price, Impulse purchase, Fashion, Individuality, Modesty, and Service. 3. According to the correlation among 8 factors, they formed two clusters; one cluster contained Practicality, Comfort, and Modesty factor, and the other did Brand or price, Impulse purchase, Fashion and Individuality factor. 4. Service factor was significantly correlated to the other factors, that is, service was the very important criteria on the clothing selection.

• Wind and Structures
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• 제18권6호
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• pp.619-631
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• 2014

This paper proposes new criteria to fix hidden neuron in Multilayer Perceptron Networks for wind speed prediction in renewable energy systems. To fix hidden neurons, 101 various criteria are examined based on the estimated mean squared error. The results show that proposed approach performs better in terms of testing mean squared errors. The convergence analysis is performed for the various proposed criteria. Mean squared error is used as an indicator for fixing neuron in hidden layer. The proposed criteria find solution to fix hidden neuron in neural networks. This approach is effective, accurate with minimal error than other approaches. The significance of increasing the number of hidden neurons in multilayer perceptron network is also analyzed using these criteria. To verify the effectiveness of the proposed method, simulations were conducted on real time wind data. Simulations infer that with minimum mean squared error the proposed approach can be used for wind speed prediction in renewable energy systems.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2012년도 한국컴퓨터종합학술대회논문집 Vol.39 No.1(B)
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• pp.261-263
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• 2012

단위 테스트에 대한 관심이 커지면서, 어떤 테스트 케이스 선정기준을 사용해야 하는지에 대한 기준이 필요해지고 있다. 비록 프로그래머들이 단위 테스트에 적용할 수 있는 여러 테스트 criteria에 대하여 습득하고 다양한 도구들에 대해 숙지하고 있더라고, 어느 설계기준을 언제 사용해야 할지에 해하여 결정하는 부분이 여전히 어렵다. 이러한 criteria, 특히 구조 기반 테스트 criteria,에 대한 여러 비교 연구들이 있어왔다. 본 논문은 이러한 criteria들의 비교 연구들을 진행하는 과정을 고찰해보고자 한다.

• 해양환경안전학회지
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• 제4권2호
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• pp.53-62
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• 1998

International Maritime Organizatin(IMO) has been chosen some of agreements for regulating the international stability criteria of fishing vessels and recommended that each goverment adopts theirs into the domestic law. As a result, 77/93 Fishing Safety Agreement was ratified. Among the above agreement, contents of stability was not only applied to domestic law, but also strenghten considerably compared with existing stability criteria. And even if the calculation guide of stability with recommendations was regualted, Analysis of stability on domestic fishing vessels never have been used according to such a caculation method. Moreover, the caculation of stability criteria caused by strong wind, rolling effect and deck inflow was not considered in the existing basic design program. Therefore, the development of stability criteria program available for such a caculation has been of vital impotance. This research has developed a stability criteria program under 77/93 Fishing Safety Agreement. Also through development of stability criteria program, the stability performance of fishing vessel with 69ton stow-nesting was evaluated.

• 대한안전경영과학회지
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• 제16권4호
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• pp.185-191
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• 2014

In this study safety distance was investigated for small-scale LNG storage facilities in order to provide basic data for safety. The results are as follows; (1) For explosion pressure criteria, current criteria are reasonable, but water spray system should be recommended to LNG storage tank to ensure safety. (2) For criteria based on the results of the quantitative risk assessment, criteria applied to people are $5kW/m^2$ for radiation, LFL for dispersion, and 7kPa for explosion pressure. And criteria applied to facility are $37.5kW/m^2$ for radiation and 20 kPa for explosion pressure.

• Perspectives in Nursing Science
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• 제1권1호
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• pp.50-65
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• 2004

Despite the new wave of diverse philosophical thoughts in nursing, the criteria for theory evaluation rarely incorporate the new thoughts in its realm. Especially, feminist thoughts, which have contributed to the development of nursing knowledge through incorporating diversities and complexities of nursing phenomenon and reflecting social, cultural, and historical contexts surrounding nursing encounters, were rarely incorporated into the evaluation criteria. In this paper, a feminist approach to theory evaluation is proposed based on a critical analysis of the existing evaluation criteria. First, a historical review of feminist thoughts is provided, and feminist principles across diverse groups of thinking within feminism are discussed. Then, theory evaluation criteria are historically analyzed and critiqued while considering the feminist principles. The critical points found in the currently available theory evaluation criteria include: (a) the evaluation criteria are based on objectivity, (b) they are ignoring gender differences; (c) cultural differences tend not to be seriously considered; and (d) contexts surrounding nursing phenomenon are rarely considered. Based on the critical points, four additional components for theory evaluation are proposed. The components are: (a) respect for subjectivity; (b) historical and sociopolitical contextual considerations; (c) gender sensitivity; (d) cultural competence; and (e) blueprint for action.