• Journal of Fisheries and Marine Sciences Education
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• v.28 no.2
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• pp.356-365
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• 2016

The purpose of this study was to verify the influences of sport enjoyment factors on recreation specialization of water sports participants. The study conducted a research survey through purposive sampling method after selecting 4 water sports center in Busan. 260 questionnaires distributed and 246 were selected as final valid sample by removing 14 questionnaires that have insufficient answers. Then data were analyzed through exploratory factor analysis, reliability analysis, correlation analysis, and multiple regression analysis using SPSS Window ver. 20.0. The results were as followings. First, the enjoyment factors have a positive effect on recreation specialization. Second, escaping from daily routine and improving technical skill dimensions of enjoyment factors have an influence on centrality of life. Third, improving technical skill dimension of enjoyment factors have a positive effect on past experience. Lastly, flow and improving technical skill dimensions of enjoyment factors have an influence on economic investment.

• Journal of Fisheries and Marine Sciences Education
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• v.29 no.2
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• pp.492-502
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• 2017

The purpose of this study was to verify the influences of surfing participants' participation motivation on flow experience and continuous participation intention. The study conducted a research survey through purposive sampling method after selecting 2 surfing center in Ganwon-do. 280 questionnaires distributed and 269 were selected as final valid sample by removing 11 questionnaires that have insufficient answers. Then data were analyzed through exploratory factor analysis, reliability analysis, correlation analysis, and multiple regression analysis using SPSS Window ver. 20.0. The results were as followings. First, participation motivation factors have positive effect on flow experience. Second, participation motivation factors have an influence on continuous participation intention. Third, flow experience have an influence on continuous participation intention. Fourth, leisure flow have an influence on continuous participation intention.

• Journal of the Korean Solar Energy Society
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• v.22 no.4
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• pp.68-76
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• 2002

This paper discusses thermal and ventilation performance which might be caused by the adoption of one of specific building facade techniques, Double Skin System(DSS). One building with a prototypical DSS was selected and systematically investigated through field monitoring and computer simulation techniques. A network model of ventilation was successfully made using COMIS to evaluate ventilation performance of the system which can hardly be done by field measurements. Various operating conditions of air conditioning on/off and window opening were implemented in this type of building. Through the appropriate operation of the DSS in summer, simulation-based and experimental results implicate that it can lead to cooling energy savings.

• KIEAE Journal
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• v.10 no.5
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• pp.95-100
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• 2010

Buildings receive solar radiation through windows and the solar radiation helps to save heating energy in winter. Therefore the bigger the glazing ratio is, the larger the amount of solar radiation we can receive. In this study we analysed the glazing ratio of Certified Green Building Apartments. And we verified whether the glazing ratio reflects energy saving through accepting solar radiation with correlation analysis. For glazing ratio analysis, we selected 116 apartment buildings of 19 apartment complexes that certified in 2008-2009 and took pictures of outside windows of the buildings. After that, we analysed the building's glazing ratio with 4 azimuth and checked distinction of the glazing ratio between 6 coupled azimuths. And we analysed the correlation between importance order of azimuth for energy saving and the glazing ratio change with the azimuth. The analysis showed that the glazing ratio does not reflect energy saving through accepting solar radiation.

• Korean Institute of Interior Design Journal
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• no.37
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• pp.110-118
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• 2003

Computer simulation is one of the most useful techniques to predict daylighting performance and present visual image. In architectural and interior design practice, the Lightscape is commonly used often to produce persuasive images rather than physically accurate results. Therefore, this study is to validity the Lightscape as daylighting evaluation tool, in particularly performance and realistically visualization. For the purpose, an evaluation test model (12.0m$\times$7.2m$\times$3.0m) of side lighting window with lightshelf was selected. A 1:6 scale plywood physical model was made. Under clear sky condition, illuminance of 84 Interior point were measured. Lightscape was run on a 750 MHz Pentium PC running Windows 2000 under the same sky condition. And a photography image was compared to rendering image. The physical results of interior illuminance were within 8% between the scale model and Lightscape simulation. There were no differences between the photograph image and rendering image by Lightscape in the sight. Lightscape as visualization tool for daylighting performance was validated.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.22 no.2
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• pp.5-25
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• 2011

This study aims to identify the most effective statistical feature selecting method and context window size for word sense disambiguation using supervised methods. In this study, features were selected by four different methods: information gain, document frequency, chi-square, and relevancy. The result of weight comparison showed that identifying the most appropriate features could improve word sense disambiguation performance. Information gain was the highest. SVM classifier was not affected by feature selection and showed better performance in a larger feature set and context size. Naive Bayes classifier was the best performance on 10 percent of feature set size. kNN classifier on under 10 percent of feature set size. When feature selection methods are applied to word sense disambiguation, combinations of a small set of features and larger context window size, or a large set of features and small context windows size can make best performance improvements.

• Korean Journal of Remote Sensing
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• v.29 no.6
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• pp.645-655
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• 2013

As one of segmentation techniques for Synthetic Aperture Radar (SAR) image with oil spill, we applied a bimodal histogram method to discriminate oil pixels from non-oil pixels. The threshold of each moving window was objectively determined using the two peaks in the histogram distribution of backscattering coefficients from ENVISAT ASAR image. To reduce the effect of wind speed on oil spill detection, we selected ASAR image which satisfied a limit of wind speeds for successful detection. Overall, a commonly used adaptive threshold method has been applied with a subjectively-determined single threshold. In contrast, the bimodal histogram method utilized herein produces a variety of thresholds objectively for each moving window by considering the characteristics of statistical distribution of backscattering coefficients. Comparison between the two methods revealed that the bimodal histogram method exhibited no significant difference in terms of performance when compared to the adaptive threshold method, except for around the edges of dark oil spots. Thus, we anticipate that the objective method based on the bimodality of oil slicks may also be applicable to the detection of oil spills from other SAR imagery.

• Korean Journal of Human Ecology
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• v.16 no.3
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• pp.615-622
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• 2007

Jeonju is well-known as a native place of traditional Hanji from ancient times because of it's proper weather, soil, and sunlights. Traditional Hanji is selected one of the Traditional Cultural Contents Industries of Jeonju nationally, and can produce synergy effects on gaining competition if we develop traditional Hanji industry into high-technology by relating cultural contents. The purposes of this study was to identify consumer attitudes and behaviors toward traditional Hanji products. The results of this study were as followed: 1. Representative products of Jeonju City were a rice with vegetables, a traditional Hanji, and a Korean-style house, and these results showed a consistancy with Han-Brand products promoted by Ministry of Culture and Tourism. 2. Many consumers experienced of a box, a copy paper, a book or notebook made of Hanji, but less experienced of fashion accessary products. Consumers had higher interests in wall or window paper and copy paper, but had lower interests in fashion accessary products such as necktie, shawl, and folding fan. More consumers intended to use wall or window paper and copy paper, but intended fashion accessary products less. Many kinds of Hanji products were produced and displayed on a Hanji Crafts House, but only few consumers had experiences. 3. Younger generations had higher interests and experiences of Hanji products, and unmarried officiers or full-time house wives had experiences Hanji crafts more. 4. Consumers were interested in daily necessaries or interior products made of Hanji.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.11 no.3
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• pp.1633-1649
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• 2017

In remote sensing image processing, the traditional fusion algorithm is based on the Intensity-Hue-Saturation (IHS) transformation. This method does not take into account the texture or spectrum information, spatial resolution and statistical information of the photos adequately, which leads to spectrum distortion of the image. Although traditional solutions in such application combine manifold methods, the fusion procedure is rather complicated and not suitable for practical operation. In this paper, an improved IHS transformation fusion algorithm based on the local variance weighting scheme is proposed for remote sensing images. In our proposal, firstly, the local variance of the SPOT (which comes from French "Systeme Probatoire d'Observation dela Tarre" and means "earth observing system") image is calculated by using different sliding windows. The optimal window size is then selected with the images being normalized with the optimal window local variance. Secondly, the power exponent is chosen as the mapping function, and the local variance is used to obtain the weight of the I component and match SPOT images. Then we obtain the I' component with the weight, the I component and the matched SPOT images. Finally, the final fusion image is obtained by the inverse Intensity-Hue-Saturation transformation of the I', H and S components. The proposed algorithm has been tested and compared with some other image fusion methods well known in the literature. Simulation result indicates that the proposed algorithm could obtain a superior fused image based on quantitative fusion evaluation indices.

• Archives of design research
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• v.13 no.2
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• pp.133-143
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• 2000

Recently there are increasing demands for establishing its peculiar city image in Korea. In establishing a urban image, streetscapes of various functional regions in city have very important roles. And many streetscape were designed and are under design for that purpose. There are many factors involved in the image-generation of streetscape, and the facade is one of the most important factors. In this study, we surveyed many factors in the city-regions of various functions to find out desirable characteristics of facade for each region. And we are going to use there findings as a basic data in the future streetscape design. We selected traditional region(Insadong, Chongro-gu, Seoul), apartment-type residential region (Apkujung-dong, Kangnam-gu, Seoul), and newly developed-downtown (Dunsan-dong, Seo-gu, Daejun) as streetscapes of various functions for facade study. Texture, color, form, size, structure and location of the following facade components were surveyed and analyzed. The surveyed components were window, entrance, equipment, signboard, show window.