• 한국정보통신학회논문지
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• 제23권5호
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• pp.508-515
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• 2019

소프트웨어 관련 R&D 사업의 결과의 성공여부를 판단하는 기준으로 다양한 정량지표를 많이 사용하고 있으나, 어떠한 정량지표를 선정하는 것이 적절한지에 대한 판단은 다소 어려운 부분이 있다. 본 논문에서는 소프트웨어 개발의 정량적 평가지표 선정에 기준을 제공하기 위해 소프트웨어 품질 수준의 표준으로 활용되고 있는 ISO/IEC25023를 활용하여 소프트웨어 제품 개발의 정량적 평가지표 생성프로세스를 제안한다. 제안 프로세스는 2단계로 구성되어 있다. 첫 번째 단계에서는 ISO/IEC25023 표준규격의 품질특성과 부특성을 도출하고, 두 번째 단계에서는 1단계 결과인 품질특성과 부특성에 부합하는 평가지표 가이드를 도출한다. 제안하는 정량적 평가지표 생성 프로세스는 소프트웨어 개발 프로젝트의 특성에 맞는 정량적 평가지표 선정에 도움이 될 것으로 기대한다.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제24권4호
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• pp.69-87
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• 2018

Purpose: This study has been started with the awareness that light and color are the main visual sensors of the multi-sensory stimulation environment to achieve the therapeutic environment for demented elderly. The purpose of this study therefore is for clarifying the application characteristics of therapeutic light and color for dementia care facilities. Methods: Internal and external literature reviews have been conducted for the investigation into a)disorders and visual system in demented elderly, b)therapeutic effects of light and color, c)heliotherapy, light therapy and color therapy to deduce the therapeutic characteristics of light and color for demented elderly, and finally into d)the application characteristics of it for dementia care facilities. Results: The application characteristics of the therapeutic light and color for dementia care facilities are classified into both qualitative and quantitative characteristics. Qualitative application characteristics of light represented using of daylight, using of lighting approximate to daylight, expansion of iluminance level, equality in iluminance Level, reduction of shadow, and as well as exclusion of blare. Quantitative application characteristics of it represented iluminance level, color temperature and color rendering index prescribed in international lighting standards. Qualitative application characteristics of color represented non-monochromatic color, color contrast, long wavelength of yellow-red colors, exclusion of short wavelength of blue colors and patterns, and as well as different colors for idenfication. Quantitative application characteristics of it represented kontrast(K) prescribed in DIN32975:2009 and light reflectance value(LRV) prescribed in BS8300:2009. Implications: To form dementia care facilities as therapeutic environment both qualitative and quantitative application characteristics of therapeutic light and color in dementia care facilities are needed.

• Journal of Electrical Engineering and Technology
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• 제13권3호
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• pp.1355-1362
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• 2018

In order to obtain a better understanding of the ageing process of the field composite insulators, it is necessary to explore a quantitative-valuation method for the aging state evaluation. And the linear relationship between volume resistivity and temperature is proposed. In this paper, the composite insulators with different lengths of operating lives from two manufacturers were tested. The relationship between trap characteristics and volume resistivity-temperature characteristics were analyzed based on Thermal Stimulated Current (TSC), volume resistivity-temperature test, Scanning Electron Microscope (SEM) and Fourier Transform Infrared Spectroscopy (FTIR). Furthermore, the application of trap characteristics in the quantitative evaluation of aging state of composite insulators was discussed. The results showed that there was a general negative correlation between the relative variation ratio of trap charges and the volume resistivity-temperature characteristics. Meanwhile, the physicochemical properties would change with the aging time, which would result in the increasing of electron traps. Combined with the TSC and volume resistivity test results, the trap characteristic thresholds which indicated the serious age of the composite insulators had been proposed.

• 대한핵의학회:학술대회논문집
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• 대한핵의학회 2001년도 제40차 춘계학술대회 및 연수교육
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• pp.60-65
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• 2001

The positron emission tomography (PET) has been used for the evaluation of the characteristics of various tumors. The role of PET in oncology has been evolved from a pure research tool to a methodology of enormous clinical potential. The unique characteristics of PET imaging make sophisticated quantitation possible. Several quantitative methods, such as standardized uptake values (SUV), simplified quantitative method, Patlak graphical analysis, and Sokoloff's glucose metabolism measurement, have been used in the field of oncology. However, each quantitative method has limitations of its own. For example, the SUV has been used as a quantitative index of glucose metabolism for tumor classification and monitoring response to treatment, even though it depends on blood glucose level, body configuration of patient, and scanning time. The quantitative methods of PET are reviewed and strategy for implementing these methods are presented.

• Journal of the Korean Wood Science and Technology
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• 제26권2호
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• pp.29-37
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• 1998

An image analysis program with the function of measuring various quantitative characteristics in the transverse surface of wood was developed using Delphi 2.0. Data on pore characteristics (conditions for image processing, proportion of pores in relationship to other elements, tangential diameter, area, tangential and radial diameter, x and y coordinates of pore center, and geometric coefficients) were saved in text file format. In addition, the pore area histogram in the tangential and radial directions was saved as a BMP (bitmap) type file. Analyses indicated that quantitative characteristics such as the relative radial distribution of pores in a growth ring, pore tangential area histogram, and proportion of pore in lumen area appear to be useful in separating four diffuse-porous woods and four ring-porous woods on the species level.

• 한국의류학회지
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• 제27권1호
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• pp.78-87
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• 2003

Based on the qualitative analysis regarding five dominant characteristics of fashion in the transitional period of the 21s1 century, subsequent quantitative analysis was conducted and the following results were obtained. First, it was found that 85% of the clothes analyzed showed these five characteristics. Secondly, among the five characteristics, the new-naturalism shows the most significant trend and neo-retro was also found as one of the leading features along with the new-naturalism in the transitional period of the 21 st century. However, the frequency of technicism is less than was expected. Thirdly, analysis of the distribution of fashion characteristics according to fashion designers and seasonal changes show that new-naturalism, neo-retro and hybrid spread relatively evenly among each designer. The quantitative study confined the results obtained through the qualitative study.

• 한국정보통신학회논문지
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• 제23권1호
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• pp.7-12
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• 2019

정부지원 R&D 사업을 수행하는 기업들은 사업계획서 상에 정량적 평가지표를 제안하고 있다. 그러나 많은 기업들은 정량적 평가지표를 선정하는데 어려움을 겪고 있고 잘못된 평가지표의 선정으로 정량적 결과 도출이 어려운 경우도 있다. 본 논문에서는 기업들이 선정한 정량적 평가지표를 소프트웨어 품질을 정량적으로 측정할 수 있는 ISO/IEC 25023표준에 접목하여 그 경향을 분석한다. 먼저 분석 대상 데이터에 대한 수집방법과 공인시험기관에서 시험한 제품에 대해 산업분야별로 분류하고 기업에서 선정한 정량적 평가지표를 ISO/IEC 25023 표준의 8가지 품질특성별로 분석한다. 다음으로 ISO/IEC 25023 표준의 8가지 품질특성으로 분류한 정량적 평가지표에 대한 분석 결과를 바탕으로 기업들의 주로 선정하는 정량적 평가지표의 품질특성의 경향을 파악하고자 한다. 이를 통해 소프트웨어 제품의 품질을 평가할 수 있는 정량적 평가지표 선정에 도움이 될 것으로 기대된다.

• 치과방사선
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• 제29권2호
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• pp.397-405
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• 1999

Purpose: To clarify the usefulness and the limitation of Digora system/sup (R)/ by evaluating the physical characteristics as the quantitative image on Image Plate(Ip). Materials and Methods: Radiograms were taken by Heliodent MD(Siemens Co.. Germany) with the image plate for adult. Cu-step wedge as reference material. and three pieces of dry mandibular bone. Image analysis was performed by single color enhancement. density measurement with histogram. The relationship between the exposure conditions and the distribution of the pixel values of the image. the variation of pixel values of each step of Cu-step wedge at two different area and Cu-equivalent value of three pieces of dry mandibular bone measure by the conversion equation. Results: There was no linear relationship between the exposure condition and the average pixel value of the image. of which the distribution was not even. The pixel value differences between the center portion and the periphery were ranged from 60 to 70 in vertical plane and from 15 to 26 in horizontal plane. Two plot profile formed at two different areas of the Cu-step wedge were different. The measured Cu-equivalent values showed the discrepancy among the times of measurement. Conclusion: As above results. Image Plate(Ip) of Digora system/sup (R)/ showed the limitation as the quantitative image. The physical property of IP was expected to need to be compensated for the quantitative evaluation of the bone or others

• 대한수학교육학회지:수학교육학연구
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• 제19권1호
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• pp.81-98
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• 2009

본 연구는 초등학교 6학년 학생들의 양적 추론의 특성을 그 유형과 표현 방식의 특성에 기초하여 분석하였다. 먼저 검사지를 통해 양적 추론의 특성을 관찰하기에 적합한 초등학교 6학년 학생 3명을 선정한 후, 문제 해결 과정에 대한 학생들의 사고 전략과 의미 도출 과정에 대한 심층 면담을 실시하였다. 3명의 학생은 문제 해결 과정에서 다른 양적 추론 유형을 사용하였으며, 그에 따라 다른 전략적 특성이 관찰되었으며, 특히 그 추론 수준이 달라서 동일한 문제해결 전략을 사용하더라도 그 세부 양상이 달랐다. 학생들은 또한 시각적 언어적 기호적 표현을 각기 다른 목적과 기능으로 활용하였다. 특히 시각적 표현은 문제 상황에 포함된 양과 그 관계를 표현하고 이를 바탕으로 새로운 관계를 추론하는 양적 추론의 과정에서 가장 큰 역할을 하고 있는 것으로 파악되었다. 연구 결과를 바탕으로 문장제 해결에서 양적 추론의 역할과 초기 대수의 도입에 관한 논의점을 도출하였다.

• 아동학회지
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• 제13권2호
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• pp.53-64
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• 1992

The purpose of the present research was to investigate developmental trends in children's class-inclusion performance and to examine the influence of task characteristics(provision or deprivation of quantitative information and perceptual information) on a class-inclusion task. The subjects of this study were 96 children, 12boys and 12girls at each age level. 5, 6. 7 and 8 years of age. The experimental materials consisted of 12 stimulus boards which were constructed on the basis of picture cards used by Judd and Mervis(1979) and Lane and Hodkin(1985). The class-inclusion tasks were individually administered by the researcher. The data were analyzed by the statistical methods of t-test, one-way ANOVA and Duncan multiple range test. The results showed that (1) There were significant age differences in children's class-inclusion performance. That is, children's performance scores on the class-inclusion task increased with age.: (2) There were significant task characteristics differences in children's class-inclusion performance. That is, children performed better on the deprivation of quantitative information task than on the provision of quantitative information task.