• The Journal of the Korea Contents Association
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• v.18 no.4
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• pp.245-253
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• 2018

The purpose of this research is to analyze how the transformation of Gwangju Biennale policy change their exhibitions. The research analyzed the Gwangju Biennale Declaration which announced upon the foundation of Biennale, as well as the following development plans to examine how the Biennale's aim has changed. There're any Biennale which has the declaration except Gwangju. We can see the keywords of art criticism at that time in the declaration and the innovations suggested on the 20th anniversary of Gwangju Biennale. This research shows the 20 years development of the declaration of Gwangju Biennale which visualize Gwangju spirit achieved more universal expansion by displaying artworks. The achievement of Gwangju Biennale which universalize the Gwangju spirit and expansion of community art parallelize the development of Korean contemporary art.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.11
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• pp.608-617
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• 2017

The purpose of this study was to examine the effect of coaches' transformational transactional leadership on athletes' self-efficacy among high school students. A total of 400 high school athletes from S and D city were selected through the convenience sampling method. A total of 258 questionnaires were returned and 39 were discarded due to missing values. Therefore, a total of 219 questionnaires were analyzed using SPSS 20.0. This study found the following: First, the intellectual stimulation of leadership had the greatest effect on self-regulated efficacy of self-efficacy. Second, inspirational motivation of leadership had the greatest effect on confidence of self-efficacy. Third, leadership factors did not affect task difficulty preference of self-efficacy.

• Journal of KIISE:Software and Applications
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• v.29 no.11
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• pp.785-794
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• 2002

Automatic stock trading systems should be able to solve various kinds of optimization problems such as market trend prediction, stock selection, and trading strategies, in a unified framework. But most of the previous trading systems based on supervised learning have a limit in the ultimate performance, because they are not mainly concerned in the integration of those subproblems. This paper proposes a stock trading system, called R-Trader, based on reinforcement teaming, regarding the process of stock price changes as Markov decision process (MDP). Reinforcement learning is suitable for Joint optimization of predictions and trading strategies. R-Trader adopts two popular reinforcement learning algorithms, temporal-difference (TD) and Q, for selecting stocks and optimizing other trading parameters respectively. Technical analysis is also adopted to devise the input features of the system and value functions are approximated by feedforward neural networks. Experimental results on the Korea stock market show that the proposed system outperforms the market average and also a simple trading system trained by supervised learning both in profit and risk management.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.6
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• pp.2751-2756
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• 2012

Selection of training set influences the classification accuracy in supervised classification using satellite imagery. Generally, if pure pixels which character of training set is clear were selected, whole accuracy is high while if mixed pixels were selected, accuracy is decreased because of low-resolution imagery or unclear distinguishment. However, it is too difficult to choose the pure pixels as training set actually. Accordingly, this study should be suggested the suitable classification method in case of mixed pixels choice. To achieve this, a few pure pixels were chosen as training set and classification accuracy was calculated which was compared with classification result using an equal number of mixed pixels. As a result, accuracy of SVM was the highest among the classification method using mixed pixels and it was a relatively small difference with the result of classification using pure pixels. Therefore, imagery classification using SVM is most suitable in the mixed area of construction and green because it is high possibility to choose mixed pixels as training set.

• Journal of Korea Multimedia Society
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• v.12 no.10
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• pp.1427-1435
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• 2009

E-Learning is different from the traditional classroom learning and examinees can take a class individually anywhere by online. And it is difficult to proctor an examination because they also take a test by online. However the results of the online test are included in their examination scores. Therefore, it is very important to authenticate the examinees. In this paper, we propose improvement of fairness system for online test using camera. Students can take a picture after every online classes and it has been saved. And during the test, ELTS(e-Learning Test System) takes images, detects the faces, and protects from getting another person to sit for cheating. After examination, the images have been transferred with the answer sheets to the cyber school management system. And a report card will be printed out with the user's images. Moreover, it will authenticate oneself and protect the online test from cheating.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.4 no.1
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• pp.142-163
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• 1993

A 8 year old boy with problems of hyperactivity, impulsivity received playpsychotherapy. Through the detailed examination of their contents and group supervision of play therapy session, common mistakes novice therapist make frequently and tasks in the initial phase of play psychotherapy are illustrated. Therapist's personality and anxiety frequently interferes therapeutic processes. Common mistakes therapist makes during initial phase of play therapy are ; therapist's over-enthusiasm, overinvolvement or non-responsiveness, premature or inappropriate interpretation and direct connection of play theme to reality. It is utmost important for the therapist to make positive and trusting relationship with the patient in the initial phase of the therapy. In order to do so therapist must accept the patient as he is, permit the patient takes his leads. And as a result, the Patient can go through corrected developmental experience. In conclusion, it is a therapist's main task to establish relationship.

• Convergence Security Journal
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• v.15 no.3_2
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• pp.11-19
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• 2015

This paper, so far to analyze the research trends in the issue that has been discussed for the introduction of private investigation institutions, by projecting its suggestion, want the investigation purpose of presenting the desirable introduction direction. The analyzed issue was extracted for existing research material on the introduction of private investigation institutions. Investigators pointed out issue is the name, business scope, corporate, qualification system (eligibility criteria and test), education, association establishment, regulatory agencies, has been included in the eight categories such as legislation form. For the name, I think there is a need to unify under the name "detective". For the scope of work, the amendment is difficult law, place an overview of the general business rules, more specific and detailed investigation business content, to discipline through the ordinance it is possible to be rational. Private investigation institutions, I think the need for limited operations of the corporation. For education, the new education and re-education on a regular basis I do for the private investigation workers. You must be one of the National Police Agency to the management authority. Legislative form, not to be defined by its own law, the revision of the security law, but that is to complement the provisions for private sector research system is effective.

• Korean journal of communication and information
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• v.80
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• pp.224-253
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• 2016

In this study, we analyzed the television news frames related to private school irregularities. Television broadcasting stations have not dealt with underlying problems of private school irregularities, but their reporting have been focused more on stating the situations. While Public announcing frame, Interference and solutions frame, Moral hazard frame and Protests and strikes frame have been applied in reporting, Autonomy highlighted frame and Publicity highlighted frame which are fundamental to the existence of private schools hardly appeared. In particular, the adhesion between private schools and political power has been continuously pointed out to be a cause of raising problems, whereas articles with such perspectives were hard to find. As a result, television broadcasting stations are required to change the way in reporting of private school irregularities in order for a lively discussion about them as the social agenda.

• Journal of the Korean earth science society
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• v.25 no.8
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• pp.764-773
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• 2004

The soil in wildfire area Sacheon-myeon, Gangneung, Gangweon Province, Korea, were investigated to clarify pattern of the soils. The soils were classified into 5 types on the basis of vegetation, types of organic matter. thickness of soil horizons, and completeness of soil profile. Each type showed different erosion pattern and Landsat ETM image. Coverage of plant leaves, litter, root, ash and other organic matter was an important component that affected soil color and reflectance of Landsat image (digital number). Although the NDVI (Normalized Distribution Vegetation Index) method in the wildfire area did not show much difference in soil types, the applied supervised classification method showed characteristic pattern of Landsat ETM image of soil types. This study showed that the applied supervised Landsat TM image classification in wildfire area is an effective way to estimate the distribution of erosion pattern of soil in wildfire area.

• Journal of Korean Society for Geospatial Information Science
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• v.20 no.2
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• pp.73-79
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• 2012

This study attempts to analyze changes in land use patterns in a compound urban and agricultural city Kimje-si, using LANDSAT TM imagery and to forecast future changes accordingly. As a new approach to supervised classification, HSB(Hue, Saturation, Brightness)-transformed images were used to select training zones, and in doing so classification accuracy increased by more than 5 percent. Land use changes were forecasted by using a cellular automaton algorithm developed by applying Markov Chain techniques, and by taking into account classification results and GIS data, such as population of the pertinent region by area, DEMs, road networks, water systems. Upon comparing the results of the forecast of the land use changes, it appears that geographical features had the greatest influence on the changes. Moreover, a forecast of post-2030 land use change patterns demonstrates that 21.67 percent of mountain lands in Kimje-si is likely to be farmland, and 13.11 percent is likely to become city areas. The major changes are likely to occur in small mountain lands located in the heart of the city. Based on the study result, it seems certain that forecasting future land use changes can help plan land use in a compound urban and agricultural city to procure food resources.