• Health Policy and Management
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• v.9 no.3
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• pp.53-69
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• 1999

In this study. we present a modified rational addiction model which incorporates social-psychological factors. This is done through a utility function which includes social-psychological factors as its component. We apply this model to a cigarette consumption function in Korea using the data from the Korean Household Panel Study(KHPS). The results provide relatively strong support for the rational addiction model. However. the impact of social-psychological factors and the short-run and long-run price elasticities are statistically insignificant.

• Journal of Korea Society of Digital Industry and Information Management
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• v.7 no.4
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• pp.133-139
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• 2011

In this paper, we propose a hybrid filter for noise reduction. The proposed method adjusts rational filtering direction according to an edge in the image using median filtered data. Rational filter modulates the coefficients of a linear lowpass filter to limit its action in presence of image details. By the ratio of polynomials in the input variables, rational filter reduces noise adaptively. Median filter is widely used to reduce impulse noise, but removes some details for highly corrupted images. Also, desirable details are removed when the window size is large. Our proposed algorithm combines rational filter and median filter. Thus, proposed method not only preserves edge, but also reduces noise in uniform region. Experimental results show that our proposed method has better quality than those by existing median and rational filtering methods.

• Korean Journal of Organic Agriculture
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• v.26 no.2
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• pp.181-202
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• 2018

Most of eco-friendly agrifood processing enterprises in Korean rural area are small and medium-sized business. For this reason, it's hard for eco-friendly agrifood processing enterprises to neither analyze business performance for efficient business management nor establish their own business plan for rational decision-making. Therefore it's necessary to design effective mathematical programming model and to make practical application which can support rational management decision-making ensuring the stable business activity of eco-friendly agrifood processing enterprises. Accordingly this paper focuses on the designing and its application of multi-objective mathematical programming model using goal programming to support rational decision-making of eco-friendly agrifood processing enterprise. Hansalimanseongmachum Food Inc. which runs soy bean processing business making tofu based on regional-based soybean farms around Anseong City will be the specific case to apply multi-objective mathematical programming model in practice. And it will suggest measures to support rational management decision-making of other eco-friendly agrifood processing enterprises.

• Journal of Family Resource Management and Policy Review
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• v.11 no.1
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• pp.1-20
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• 2007

This study identified financial management patterns of college students, and compared socioeconomic characteristics among different groups of financial management patterns. Also, the study examined the level of financial knowledge of college students, and compared it among the groups of financial management patterns. Data fur this study were from a questionnaire completed by 4-year college students (n=364), and were analyzed by factor analysis, cluster analysis, chi-square test, and ANOVA. The findings of this study were as follows: First, the financial management patterns were categorized by four groups: rational management group, future-oriented group, active management group, and present-oriented group. Secondly, younger students were more likely to be in the present-oriented group, while older students were likely to be in the future-oriented or active management group. Male students were likely to be the active managers, but female were likely to be the rational managers. Students' income was higher for future-oriented or active management groups, and their part-time jobs and their experiences of financial education were also significant variables. Thirdly, the average score of college students' financial knowledge was 49.9 on a 100 point basis. The part of financial assets and investment had only 47 points. The group of rational managers and active managers received higher points than the other groups.

• Journal of Korea Society of Digital Industry and Information Management
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• v.8 no.3
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• pp.41-48
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• 2012

In this paper, we propose a method of edge detection for noisy image. The proposed method uses a progressive filter for noise reduction and a Sobel operator for edge detection. The progressive filter combines a median filter and a modified rational filter. The proposed method for noise reduction adjusts rational filter direction according to an edge in the image which is obtained by median filtering. Our method effectively attenuates the noise while preserving the image details. Edge detection is performed by a Sobel operator. This operator can be implemented by integer operation and is therefore relatively fast. Our proposed method not only preserves edge, but also reduces noise in uniform region. Thus, edge detection is well performed. Our proposed method could improve results using further developed Sobel operator. Experimental results show that our proposed method has better edge detection with correct positions than those by existing median and rational filtering methods for noisy image.

• Journal of Families and Better Life
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• v.26 no.5
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• pp.241-257
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• 2008

The purpose of this study waw to investigate the effect of consumer knowledge of adolescents, money attitudes and consumption values on rational consumption behavior and the direct and indirect effects of these variables on rational consumption behavior. The subjects of this study were 524 students who were in the first grade and second grade of high school in Daegu. Multiple Regression Analysis and Path Analysis were employed for the data analysis. The major findings of this study were as follows: First, the knowledge of money management, the purchase knowledge and the consumerism knowledge effected on the money attitude, which regarded money as an instrument of future safety. Among these, it was found that the money management knowledge had the highest affect on this money attitude. The result suggests that the consumer knowledge affects desirable money attitude which regarded money as an instrument of future safety, and then consumer education influences positively money attitude. Second, the money attitude which regarded money as an instrument of future safety affected consumption values most, and the money attitude which regarded money as a means for approval of another person affected the ostentation, the conformity, the discrimination and the aesthetic enjoyment of consumption values. Third, the present study showed that the money attitude which regards money as an instrument of future safety and the economical consumption values were the important factor which affecting each subdimension of the rational consumption behavior. The result suggests the adolescents, who managed money well, saved it for the future, and saved the resources as much as possible when consuming, behaved rational and planned way through all process all process all consumption behaviors. Fourth, the consumer knowledge did not affect the rational consumption behavior directly, but indirectly through the money attitude and the consumption values. Therefore, the consumer knowledge, the money attitude and the consumption values were the important factor for the rational consumption behavior, and it revealed money attitude and consumption values played role as mediate variable. This study results suggest the consumer knowledge that adolescent have learned in school was theoretical and abstract, so it does not affect directly the rational consumption behavior. However these consumer consumption values affect the consumption behavior.

• Journal of the Korea Safety Management & Science
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• v.7 no.4
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• pp.121-140
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• 2005

In Korea, an enterprise usually operates two kinds of similar innovative activities at the same time and the same place. The activities make medium and small enterprises incur conflicts of taske and wastes of resources. The solutions for cooperation of the activities, Single PPM and 6 Sigma, are increasing the competency and efficiency of the medium and small enterprises in Korea.

• Proceedings of the Safety Management and Science Conference
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• 2008.11a
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• pp.177-187
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• 2008

Today, Advertisement affects the daily consumption life of consumers because of the features and advantages of advertisement. In particular, and so does the TV advertisement. Therefore, customer education is required for the consumers so that they can lead a rational consumption through TV advertisement quality. The purpose of this research is to offer basic data which can help consumers to acquire necessary information and conduct rational consumption through TV advertisement. Also purchasing behavior of consumers communicate, demographic background, TV advertisement quality of what is the attitude of the relative influence presents.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.5
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• pp.237-248
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• 2020

The purpose of this study is to investigate and reconfirm the research instruments and variables that have been developed by prior study and built new concepts from empirical research results. Besides analyzing the essential role of fundamental, rational, and psychology aspects to increase employee's intention to stay in a company, which is useful for the development of human resource development strategies for millennial workers in the future. A total of 438 non-student male respondents aged 23-36 years, with unmarried status and not working in the SOE sector or as a civil servant, were surveyed with questionnaires. The study was conducted in Makassar, Indonesia. Data collection uses a survey with the second-order model approach and regression with control variables. The findings of this study suggest the existence of an inter-relationship between fundamental, rational and psychological aspects. They are inseparable and have a positive and significant influence. Broadly speaking, the link between fundamental, psychology and rational aspects states that the decision for millennial male workers to stay in the company will depend on whether the company has a good image and reputation, the level of attention the organization pays to career development, is competent, and applies regulations and rules with flexibility.

• Journal of Preventive Medicine and Public Health
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• v.24 no.1 s.33
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• pp.16-28
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• 1991

Service diversification is recognized as an important strategy against turbulent environmental change. This study is designed to find out the trend of service diversification in Korean health care organizations and also to identify factors associated with the degree of service diversification. Data were collected from 69 hospitals out of 71 hospitals with over 300 beds. Important findings are summarized below. 1. Types of diversification are closely related to hospital size. Large hospitals have a tendency to provide sophisticated services requiring specialized skills and equipment, while small hospital have concentrated their efforts on health screening programs. 2. The more competitive and bigger hospitals are, the greater number of services that provide. Also, hospitals operating rational management information systems provide more services. Contrary to the expectation hospitals with a low performance during last 3 years showed more service diversification. 3. A trend of more diversification was observed in hospitals whose chief executive officer used a prospector strategy. 4. A multiple regression analysis revealed that bed size, competitive environment, degree of rational management, and the growth pattern were significantly associated with the service diversification.