• 펄프종이기술
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• 제31권2호
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• pp.77-85
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• 1999

A study on the thermal stability of commonly used six fillers, such as titanium dioxide, silica, ground calcium carbonate, zeolite, and, clay, showed that most fillers except titanium dioxide were strongly effected by heat treatment. Therefore, the present methods for determination of ash in paper give weight loss due to thermal decomposition of fillers. It was found that a paper ashing method at a temperature of 40$0^{\circ}C$ allows most fillers in their original and undecomposed from. Results presented in this paper also show that X-ray diffraction can be used for qualitative determination of mixed fillers and coating pigments in a paper sheet.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1990년도 한국자동제어학술회의논문집(국내학술편); KOEX, Seoul; 26-27 Oct. 1990
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• pp.362-366
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• 1990

The resistance spot welding process has been extensively used for joining of sheet metals, which are subject to variation of many process variables. Many qualitative analyses of sampled process variables have been successfully attempted to achieve a uniform nugget size. In this paper, the electrode movement signal which is a good indicative of the nugget size was examined by introducing a mathematical model with four parameters. A neural network method was applied for the estimation of the nugget size by four parameters. The prediction by the neural network is in good agreement with the actual nugget size. The results are quite promising in that the qualitative estimation of the invisible nugget size can be achieved without destructive testing of the welds.

• Child Health Nursing Research
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• 제24권2호
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• pp.166-177
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• 2018

Purpose: The purpose of this study was to explore and describe the meaning and essence of experiences of stress in mothers of preschoolers with atopic dermatitis. Methods: This study employed a qualitative research design. Seven mothers of preschoolers with atopic dermatitis were interviewed and the data were analyzed using Giorgi's phenomenological method. Results: Five main themes and 12 theme clusters emerged. The 5 main themes were 1) the mother's enduring heartache from the conflict that arise among family members, 2) the complete loss of daily happiness, 3) the steady stream of emotional fluctuations, 4) struggling to bear the heavy financial burden, and, 5) a life of hope accompanied by stress. Conclusion: The results of this study provide an in-depth understanding of stress among mothers of preschoolers with atopic dermatitis. These results can be used in the development of nursing interventions to provide psychological and emotional support for mothers and family members.

• 대한가정학회지
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• 제43권7호
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• pp.159-170
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• 2005

The purpose of this study was to investigate the causes of managerial failure in small apparel retailers by using the qualitative research method. The study was performed by interviews from thirteen owners/managers who experienced failure as small apparel retailers from November 2003 to February 2004. The causes of failure in the small apparel businesses were human related problems, marketing strategy problems, marketing mix, weak managerial ability, and business environment related problems. Of special interest was causes such as incomplete legal documents with franchisers, unexpected tax investigation from the office of National Tax Administration(NTA), sexual discrimination for women owners, and incapable risk management. It is interesting to note that tax investigation by NTA and sexual discrimination in the business custom were shown as the main causes of business failure in Korea.

• 한국의류산업학회지
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• 제10권2호
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• pp.209-219
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• 2008

The purpose of this study was to investigate job stressors of information planning process and the relevant affairs of Fashion Information Providers, using the qualitative research method. This study was performed by interview with 14 fashion information planning providers from April to May in 2007. In the information planning process, there were five steps on fashion information providers' recognitions of stressors: information gathering, analysing, planning, presenting and evaluating. In the relevant affairs of fashion information activities, job stressors consisted of task related stressors, role related stressors, organization related stressors, personal characteristics, and outsides of organization related stressors.

• 생약학회지
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• 제43권4호
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• pp.302-307
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• 2012

The herb of Artemisia capillaris in Chinese medicine is used to treat hepatic diseases. In this research, qualitative analysis was performed using a UPLC/Q-TOF-ESI-MS/MS method for rapid identification of phenolic substances from A. capillaris: three caffeoylquinic acids (chlorogenic acid, 3,5-di-O-caffeoylquinic acid, and 4,5-di-O-caffeoylquinic acid), three flavonoids (hyperoside, isorhamnetin 3-O-robinobioside and quercetin) and three prenylated coumarins (6,8-diprenylumbelliferone, cedrelopsin and osthol) were identified. The three prenylated coumarins have not been reported from A. capillaris.

• 한국소음진동공학회논문집
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• 제16권5호
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• pp.495-502
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• 2006

A fault diagnosis method is developed in this study using automaton through quantization of vibration signals for normal and faulty conditions, respectively. Automaton is a kind of qualitative model which describes the system behaviour at the level of abstraction. The system behavior was extracted from the probability of the output sequence of vibration signals. The sequence was made as vibration levels by reconstructing the originally measured vibration signals. As an example, a fault diagnosis for the bearing of ATM machine was done, which detected the bearing fault with confident level compared to any other existing methods of kurtosis or spectrum analysis.

• Journal of Information Technology Applications and Management
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• 제26권3호
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• pp.19-27
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• 2019

In this study, we propose a methodology for predicting the movie audience based on movie information that can be easily acquired before opening and effectively distinguishing qualitative variables. In addition, we constructed a model to estimate the number of movie audiences at the time of data acquisition through the configured variables. Another purpose of this study is to provide a criterion for categorizing success of movies with qualitative characteristics. As an evaluation criterion, we used information gain ratio which is the node selection criterion of C4.5 algorithm. Through the procedure we have selected 416 movie data features. As a result of the multiple linear regression model, the performance of the regression model using the variables selection method based on the information gain ratio was excellent.

• 산업경영시스템학회지
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• 제18권34호
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• pp.1-8
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• 1995

The practical problem of multi-attribute decision making are formed by the uncertain attribute that the attribute by the alternatives cannot be defined or judged crisphy but only as vague. In this case the final judgements are also represented by vague which have to be ordered to determine the optimal alternative. The problem is more complex if the evaluations of alternatives according to each attribute are expresed vague. This paper described the results of a study done to determine how well multi-attribute decision marking perform in helping a decision maker arrive at a preferred solution to a multi-attribute problem with vague attribute. Particular area of research has concentrated on the issue of combining quantitative and qualitative data supplied by estimation. Futher study considers some method for suitable evaluation of qualitative data.

• The International Journal of Costume Culture
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• 제4권1호
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• pp.9-17
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• 2001

The purposes of the study are to find out the effect of clothing colors on perception of stimulus ages, occupations and images using stereotyping and color vision theories. The research method is a qualitative study and materials developed for the study are a set of stimuli and open-ended responses. The subjects were 1138 undergraduate students in Taejoen city, Chungbuk province. The data is analyze using content analysis, supplementary frequency and χ²analysis. The results are as follows : 1) The colors in Korean traditional costumes affected on the wearer's age perception : The red ensemble give the wearer the youngest look while the gray give the oldest look. 2) Mono-color ensemble wearers tend to give older look than bi-color ensemble wearers. 3) The chima colors and the jogori colors have similar impact on the wearer's age perception. 4) On image perception the jogori colors have more impact than the chima colors. 5) The colors in Korean traditional costumes are the clues to estimate the wearer's occupation.