• Journal of Digital Convergence
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• v.13 no.1
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• pp.455-461
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• 2015

while the mobile game is the publishing of KakaoTalk, mobile game industry, became the opportunity for more growth. However, after two years in service, this time in a number of games has a service Kakaogame, but out Profitable game is out steadily, as compared to the service game was in early Kakaogame many I was reduced. Everyone hurried game of in feature If you get a good game is depending of course also Profitable model. Although domestic mobile game is a lot of publishing of KakaoTalk, in order to the competition between the same kind of game because it is similar to everyone game, profit structure in the game is important. Under the paper to find a direction that can be maximized through the previous study the benefits of typical Profitable model used Kakaogame has been presented in the direction of a new Profitable model.

• Journal of Digital Convergence
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• v.13 no.8
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• pp.431-438
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• 2015

Smartphone is popularized, it is a lot of development of the mobile advertising industry, is born many types of mobile advertising. Many developers in the mobile game is the advertised profitable by using the SDK of service companies that service the advertising the launch of free games. Mobile IGA banner, front advertising, we use the ad in the three forms of the front video advertising, each of advertising, have advantages and disadvantages. Although many of the games currently use a full-page ad and front video ads, these ads profitable model is use the user game play time. In order to improve the disadvantage of this method, Commonly used to analyze the three ad revenue model, looking for the element, by using the research result of the previous studies, we have proposed a new advertising Convergence profitable models.

• Journal of Korea Multimedia Society
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• v.24 no.10
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• pp.1358-1368
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• 2021

A research on agricultural automation is a main issues to overcome the shortage of labor in Korea. A sweet persimmon farmers need much time and labors for classifying profitable sweet persimmon and ill profitable products. In this paper, we propose a mixed two-step synthetic neural network model for efficiently classifying sweet persimmon images. In this model, we suggested a surface direction classification model and a quality screening model which constructed from image data sets. Also we studied Class Activation Mapping(CAM) for visualization to easily inspect the quality of the classified products. The proposed mixed two-step model showed high performance compared to the simple binary classification model and the multi-class classification model, and it was possible to easily identify the weak parts of the classification in a dataset.

• The Journal of Korean Society for School & Community Health Education
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• v.15 no.2
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• pp.13-22
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• 2014

Objectives: The purpose of this study was to identify drinking form and analyze affecting factors of emergency medical technology students. Methods: Data were collected by questionnaire and analyzed by using the SPSS WIN 18.0 and Multiple Linear Regression Analysis. Results: In factors of the monthly drinking frequency, start drinking(middle school), smoking, pocket money, education level of mother were statistically profitable(p<.05). In factors of the monthly drinking too much frequency, gender, education level of mother, start drinking(high school), economical level were statistically profitable(p<.05). In factors of subjective model of drinking, discord with parents, education level of mother, age were statistically profitable(p<0.05). Conclusion: Teacher and the authorities of school and government must know seriousness and importance of drinking and endeavor to solve the problem and prepare the political plan and solution.

• Health Policy and Management
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• v.9 no.2
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• pp.1-20
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• 1999

This study was conducted to investigate the predictors of hospital bankruptcy in Korea and to examine the predictive power for 3 types of statistical models of hospital bankruptcy. Data on 17 financial and 4 non-financial indicators of 30 bankrupt and 30 profitable hospitals in 1. 2, and 3 years before bankruptcy were obtained from the hospital performance databank of Korea Institute of Health Services Management. Significant variables were identified through mean comparison of each indicator between bankrupt and profitable hospitals, and the predictive power of statistical models of hospital bankruptcy were compared. The major findings are as follows. 1. Nine out of 21 indicators - fixed ratio, quick ratio, operating profit to total assets, operating profit to gross revenue, normal profit to total assets,normal profit to gross revenue, net profit to gross revenue, inventories turnrounds, and added value per adjusted patient - were found to be significantly predictitive variables in Logit and Probit models. 2. The predicdtive power of discriminant model of hospital bankruptcy in 1. 2, and 3 years before bankruptcy were 85.4, 79.0, and 83.8% respectively. With regard to the predictive power of the Logit model of hospital bankruptcy, they were 82.3, 75.8, and 80.6% respectively, and of the Probit model. 87.1. 80.6, and 88.7% respectively. 3. The predictive power of the Probit model of hospital bankruptcy is better than the other two predictive models.

• The Transactions of the Korean Institute of Power Electronics
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• v.10 no.2
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• pp.186-193
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• 2005

This paper presents a strategy to drive built in-type spindle induction motor which is used as CNC(Computer Numerical Control) in the industry. Gopinath model flux estimator which is composed of current model to be profitable in the low speed range and voltage model to be profitable in the high speed range is used for rotor flux estimation. Moreover this paper presents to drive the spindle motor in the high speed range by using the flux weakening control. High speed operation of spindle motor in the field weakening region is verified through simulations and experiments.

• International Journal of Quality Innovation
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• v.9 no.1
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• pp.181-187
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• 2008

Every company tries to know who the best and idealistic customers are and how to identify them by use of the special methods. To solve this problem the diamond model of customer stratification, which is the conceptual model, is introduced in this research. We modified the customer stratification model developed by Narayanan et al. (2007). By use of this model we can find out the most profitable customers and then we can plan to improve the profitability of the rest customer groups.

• The Journal of Economics, Marketing and Management
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• v.9 no.4
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• pp.9-18
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• 2021

Purpose: This study examines some successful and failed cases of Korean private universities' profitable business and explores the desirable economic value and direction of their profitable business business operations with a view to shedding light on some clues conducive to their financial health and quality education. Research design, data and methodology: This study reviews news articles, reports and literature to find out Korean universities' financial condition and examines some successful and failed examples of their corporations' profit-making business operations to suggest a direction. Results: Private universities suffer declining enrollments and/or tuition freeze but they lack in making efforts to secure financial health. The reviewed examples of private universities' profit-making business operations suggest both universities and their corporations should first assume the public accountability prior to engaging in diverse business activities. Conclusions: First, to remain financially healthy, university corporations should exert themselves to transform their low-profit-margin lands and buildings into high-profit-margin businesses and to credit the realized income to their school-expense accounts. And, the ultimate purpose of universities' profit-making business operations is to realize a decent income without prejudice to their public accountability for the country and community, while forging a virtuous cycle by investing the income for the betterment of their educational quality and competitiveness.

• Korean Journal of Organic Agriculture
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• v.29 no.1
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• pp.25-39
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• 2021

The objective of this study is to analyze the value of attributes of agricultural products in school food service using hedonic price model and choice experiment. In the case of potatoes, bean sprouts, and tomatoes, environment-friendly agricultural products rather than conventional ones, and domestic price premiums exist rather than Chungnam. The higher the price, the higher the margin rate. Conventional agricultural products were more profitable than environment-friendly ones, and domestic products were more profitable than Chungnam. In consumer preferences, environment-friendly agricultural products are preferred over conventional agricultural products and local products (Chungnam, Cheonan, Asan) rather than domestic ones. This is the opposite result of the Hedonic price model estimation that Chungnam has a lower price premium than domestic in the case of origin. This study is meaningful by analyzing the attribute value of agricultural products used for school meals in Chungnam and comparing them with the willingness to pay consumers. With the results of this study, it is necessary that discussions on supplementing the value of local products used in Chungnam school food service.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2000.10a
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• pp.239-242
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• 2000

Newspapers on the Internet, so called Internet Newspapers, have appeared since 1995 in Korea and have provided the news contents for free. So the most of the revenues come from internet advertising. That business model has not become so profitable. Therefore, internet newspapers are forced to find better and stable paths to profitability. This paper provides a news contents-based integrated business model and the case study using two cases supports that business model