• 품질경영학회지
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• 제47권2호
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• pp.315-325
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• 2019

Purpose: The purpose of this study was to propose useful standards evaluation method using standards networks by analyzing the relationship between normative references citation information list. Methods: The collected data through the survey were analyzed using social network analysis. The measurement tools used for this study were divided into three dimensions such as certificate standard, normative reference and degree centrality. Results: The results of this study are as follows; regarding the influence of standard information, It is meaningful that the research using normative reference item among the bibliography information that the standard itself possesses. The analysis of social network analysis data of population standard, normative reference and the correlation analysis with sales, a variable representing actual utilization performance, suggested the importance of the standard and how to evaluate it. Conclusion: In prioritizing standard maintenance, more efficient management will be possible if centrality figures of standard network information are analyzed and used for standard maintenance.

• 한국건설관리학회논문집
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• 제2권4호
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• pp.80-91
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• 2001

건설분야 표준분류체계의 코드항목들은 비용정보, 시방정보 등 분류체계가 적용되는 건설산업분야의 모든 정보들에 일관되게 적용될 때 그 효용성이 극대화될 수 있으므로, 토목분야 공종정보들은 하나의 단일화된 분류체계를 중심으로 동일하게 분류될 필요가 있다. 현행 국내의 토목분야 표준분류체계 중 공종분류체계는 '통합건설정보분류체계', '토목공사 수량산출기준' 및 '공사시방서 작성요령' 내의 공종분류체계가 각각 개별적으로 제시되고 있으며, 10여 종의 토목분야 표준시방서 공종분류 또한 각각 상이한 분류방식 및 코드체계를 사용하고 있다 본 연구는, 토목공사 수량산출기준이 국내 토목분야 공종분류 체계로서의 대표성과 표준분류체계로서의 효용성을 가질 수 있게 하기 위한 방안으로서, 수량산출기준 코드체계를 중심으로 하는 시방서 분류코드의 통합기준을 구성하고 활용방안을 제시하였으며, 웹기반 활용시스템 시안을 구성하여 제시된 통합기준의 활용방안을 구체화하였다.

• 보건행정학회지
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• 제20권2호
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• pp.1-16
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• 2010

Background : Clinical practice guidelines are an increasingly familiar part of clinical practice. Moreover, rigorously developed evidence based guidelines has been widely used. However, in Korea, some of published documents as clinical practice guidelines have shown considerable disparity in structure, contents and quality. This is mainly because there is no consensus on the definition and quality standard of clinical practice guidelines. The purpose of this study was to draw consensus on the definition and the quality standard about clinical practice guidelines. Method : We developed a questionnaire about the definition of clinical practice guidelines with inclusion criteria(23 items) and the quality standard(30 items). We selected 9 experts who had prior experience in developing and implementing guidelines. Rating methods for appropriateness of items were adopted from the RAND method. Consensus was drawn in three rounds. Results : Of the 47 items agreed, 40 items were determined to be appropriate. Clinical practice guidelines were defined as "scientifically and systematically developed statements to assist practitioners and patients on making decisions about appropriate health care for specific clinical circumstances." Narrative reviews, systematic reviews or health technology assessment without recommendations, translation of foreign guidelines, guidelines for patients only and training manuals were not considered as clinical practice guidelines. For the quality standard of clinical practice guidelines, 27 items were deemed necessary. Conclusions : The consensus on the definition with inclusion criteria and the quality standard of clinical practice guidelines carries an important meaning as the first attempt to draw a general agreement in our society. The unique achievement of the consensus reflects the current status of clinical practice guidelines that there has been a high tendency to adapt foreign guidelines. We hope efforts of this kind will continue to bring improvement in clinical practice guidelines.

• Journal of electromagnetic engineering and science
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• 제18권3호
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• pp.169-174
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• 2018

In this paper, we propose an estimation method using multiple in-phase and quadrature (IQ) signals of different frequencies to evaluate the sample-time errors in the sampling oscilloscope. The estimator is implemented by ODRPACK, and a novel iteration scheme is applied to achieve fast convergence without any prior information. Monte-Carlo simulation is conducted to confirm the proposed method. It clearly shows that the multiple IQ approach achieves more accurate results compared to the conventional method. Finally, the criteria for the frequency selection and the signal capture time are investigated.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1992년도 하계학술대회 논문집 B
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• pp.573-576
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• 1992

This paper presents a method, which couples the boundary integral terms in the thin magnetic materials with standard FEM used to analyze the rest of it, for analyzing the magnetic fields. The proposed method retains the sparsity and symmetry of the final system matrix, the merits of standard FEM and eliminates the need for fininte elements in the thin magnetic materials, thereby reducing necessary capacity of computer memory and computing time. To verify the usefulness of the proposed alogorithmn, an examples, coil with source currents and thin magnetic materials, is chosen and analyzed. the results are compared with those of the standard FEM by coarse mesh and the proposed method, using standard FEM by fine mesh as a reference.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 2000년도 춘계공동학술대회 논문집
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• pp.365-368
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• 2000

This paper proposes a new heuristic method of constructing process capability indices (PCIs) for skewed populations. It is based on weighted standard deviation (WSD) method which decomposes the standard deviation of a quality characteristic into upper and lower deviations and adjusts the value of PCI using decomposed deviations in accordance with the skewness estimated from sample data. For symmetric populations, the proposed PCIs reduce to standard PCIs. Asymptotic distributions of the estimators of the PCIs are obtained. The performances of the proposed methods are compared with those of the standard and other methods. Numerical comparisons indicate that considerable improvements over existing methods can be achieved by the use of WSD method when the underlying distribution is skewed.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.2468-2473
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• 2005

Because the rain gauges of tipping bucket type can easily use the digital signal, the rain gauges are widely used for the meteorological observation. In general, the resolution of rain gauges of tipping bucket type can be categorized by the 0.1mm, 0.5mm, and 1.0mm classes. But, the error of the tipping bucket rain gauges is made by the intensity of rainfalls and is expected to make the standard calibration method for error measurement. Thus, we developed the hardware of standard calibration facility for rain gauges by weighting measurement method and proposed the standard procedure by rainfall intensity in this study Also, we calculated the error for the rainfall intensity and obtained useful result through the proposed calibration method.

• 한국세라믹학회지
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• 제28권2호
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• pp.109-118
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• 1991

Steady-state sublimation vapour pressures of anhydrous bismuth triiodide have been measured by the torsion-effusion method from 488.8 to 570.5 K and equilibrium sublimation pressures were obtained from the steady-state data. The standard sublimation enthalpy changes derived by both second(modified sigma function) and third(average enthalpy method) law methods were 159.316${\pm}$0.055, 137.67${\pm}$1.43 kJ$.$mol-1 respectively. The standard sublmation entropy change derived by modified sigma function was 232.88${\pm}$0.10 J$.$K-1$.$mol-1. The reliable standard sublimation enthalpy change based on a correlation of {{{{ { TRIANGLE }`_{cr } ^{g } }} H{{{{ { 0} atop {m } }}(298.15K) and {{{{ { TRIANGLE }`_{cr } ^{g } }} S{{{{ { 0} atop {m } }}(298.15K), a recommended p(T) equation has been obtained for BiI3(cr) ; lg(p/Pa)=-(C$.$K/T)+5.071lg(T/K)-2.838${\times}$10-3(T/K)-7.758${\times}$103(K/T)2+1.4519 where C={{{{{ { TRIANGLE }`_{cr } ^{g } }} H{{{{ { 0} atop {m } }}(298.15K)/0.019146 kJ$.$mol-1}-456.27.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2009년도 정보 및 제어 심포지움 논문집
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• pp.299-301
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• 2009

Current standard for T-DMB Automatic Emergency Alert Service(AEAS) contains controversial problems in service signaling. In this paper, we first describe two important characteristics of AEAS which hinder normal MCI service signaling: Common Service and Aperiodic Service. Next, we propose four method to overcome the problems, followed by the characteristics of each method. In this analysis, current T-DMB standard, the broadcasting system, and receivers are the major player to decide the optimum service signaling method. This analysis will be also applied to the design of transmission standard for other media such as cable, satellite, the Internet, etc.

• 대한기계학회논문집
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• 제7권3호
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• pp.319-327
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• 1983

The thermal diffusivity one of the series of standard pieces for spark test are determined by the flash method. The standard pieces are composed with carbon steels, structural carbon steels, alloy steels and high speed tool steels. In order to compute the thermal conductivity of the standard pieces, their specific heats are measured by a differential scanning calorimeter. The thermal conductivities are calculated from the data of specific heat, density and thermal diffusivity. To increase the accuracy of data for the thermal diffusivity by data reduction excursion method in the flash method, the governing heat diffusion equation, which is closely described experimental conditions with the finite pulse and the heat loss from the sample surfaces, is solved. In this analysis an integral transform is used.