• Journal of the Institute of Electronics Engineers of Korea TE
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• v.39 no.3
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• pp.28-34
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• 2002

This paper describes embedding non-linearly watermark data in the components of pixel intensities in the spatial domain of an image. The principle of the proposed method is that when an image is segmented regularly to the blocks, the pixels of the block have the non-linear properties without any similarity. That is, for the block with strong non-linear property human can't feel the visual different to the modified pixel values, on the other hand for the block with weak non-linear property human can feel the visual different to the a little modified pixel values. Thus we could embed the watermark data according to the non-linear property of the blocks. As the result of the simulation, against some general image processing attacks our algorithm could keep robust and be responsible for the copyright certainly. 

• KOREAN JOURNAL OF CROP SCIENCE
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• v.52 no.3
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• pp.274-280
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• 2007

The effect of biofertilizer in enhancing nutrient quality and antioxidant property of rice grain was investigated. The experiment was carried out in a randomized complete block design with 3 replications and 7 treatments namely : RF = $N-P_2O_5-K_2O(11-5.5-4.8kg\;10a^{-1});$ half of the recommended fertilizer rate, $HRF=N-P_2O_5-K_2O(5.5-2.75-2.4kg\;10a^{-1}):$ HRF+Bio 250=HRF combined with 250 kg Biofertilizer 10 $a^{-1}$; HRF+Bio 500=HRF combined with 500 kg Biofertilizer 10 $a^{-1};$ Bio 250=250 kg Biofertilizer 10 $a^{-1};$ Bio 500=500 kg Biofertilizer 10 $a^{-1};$ and NF=No Fertilizer. Results showed that HRF+Bio 500 obtained a significantly higher protein content but a significantly lower amylose content compared with RF and NF treatments. Highest phytic acid content was recorded in NF treatment while the lowest was observed in HRF+500 treatment. The highest values in both electron donating ability and reducing power were obtained in HRF+Bio 500 treatment. All treatments obtained higher reducing power than that of the RF treatment and that NF treatment showed comparable values in both electron donating ability and reducing power with those of the treated plots. Highest antimutagenicity property was also observed in HRF+Bio 500 treatment followed by Bio 500 treatment. This study showed the possibility of using biofertilizer to enhance nutritional quality and antioxidant property of rice.

• Spatial Information Research
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• v.19 no.1
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• pp.41-50
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• 2011

In Chilgok, industrial complex and agro-industrial complex has facilitated with the population growth rate of 2.79% since 1995. And the city should be apparently required more additional land for agriculture and industrial complex due to the demands of developments. However, many experts has pointed out that utilization of national and public property might be declined recently because the property management office owns too many unnecessary idle lands. So the city is being faced with the necessity of establishing an efficient system for the management of available lands. Therefore, this study evaluated the economic value of available national and public land in Chilgok city. Rental or sale of economic value by separating the target has been also assessed. As a result, each town has totally different characteristics of available lands and the economic values and the numerical change of economic values can measure when merge lots.

• KIEAE Journal
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• v.8 no.5
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• pp.17-22
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• 2008

Dosan Seowon, one of the earliest and most prestigious private Confucian academies in Korea, is an example of a heritage property citizens wish to sustain for the benefit of future generations. It is recognized of its contribution to the Korean society and as an architectural and historical interest. This study conducts architectural and cultural research about Dosan Seowon by scrutinizing its evidential, historical, aesthetic and spatial values. By doing so, it is possible to recognize how appreciated qualities are vulnerable to harm through only understanding their heritage values without practical management solutions. That understanding should then provide the basis for developing and implementing management strategies (including maintenance, cyclical renewal and repair) that will best sustain the heritage values in a physical aspect. The conclusion suggests that communication about Dosan Seowon among those who are concerened is significant.

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.14 no.4
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• pp.275-284
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• 1985

The thermophysical property values were determined and compared with each other according to the tine of surface treatment. The diffusivity values were obtained by the flash method, and the specific heat values were measured by the differential scanning density. The thermal conductivity values were calculated from the values of the thermal diffusivity, specific heat, and density. The nitrided steels were the structural carbon steels, carbon tool steels, alloy tool steels, and high speed tool steels.

• Knowledge Management Research
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• v.17 no.3
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• pp.181-206
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• 2016

Under the influence of growing popularity of "hallyu" (Korean wave), corporates that have copyrights such as music, movie, drama as their core competitiveness are showing continuing growth. In Addition, they built on contents are rapidly growing, interests in protection and management of intellectual property rights linked to contents are growing. Global contents development corporates are making great efforts to create profits out of copyrights. They could utilize original contents to strengthen brand value use it to produce additional contents in current market. Also they take advantage of existing storyline of the contents and strong brand to explore new markets. This paper looks into Value articulation model by Professor James Conley and analyzed the firms that utilized intellectual property rights to extend the period of protection, strengthen their competitiveness and succeeded in breaking into new market by using the rights they possess. Also, this paper examines the usage of intellectual property rights and business expansion strategy of of Iconix, the Korean entertainment company, which gained tremendous popularity in last ten years using this model. In Value articulation model, Conley classifies the process of exploiting the portfolio of the single product's(or service's) intellectual property right for a period of time into three stages ; value transference, value translation, value transportation. Pororo's strategy of utilizing intellectual property right is suggestive to domestic entertainment companies. Under the influence of hallyu" (Korean wave), domestic contents such as movies, dramas and music are enjoying the high level of popularity recently not to mention animations. In reality, Korean entertainment companies who have no background or experience of Intellectual property rights are not creating enough added values compared to fast growing market. It is believed Iconix's intellectual property rights management strategy will suggest positive aspects to domestic companies. Moreover, I hope various intellectual property rights management strategies including Conley's value articulation are studied and they can make contributions to managing domestic entertainment companies.

• Tribology and Lubricants
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• v.13 no.3
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• pp.108-114
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• 1997

The electrical and frictional properties of new sintered-metal bearing (S-bearing) with varying loads and speeds were measured. Also those were compared with the same products(J-bearing) made in Japan and the conventionally used ball bearing. The test results show that the frictional values of S-bearing are less than those of J-bearing, and that S-bearing operates in full-hydrodynamic lubrication regime. The values of rating current, starting time and jitter reveal that S-bearing is superior to J-bearing as well as ball bearing.

• Journal of the Korean Statistical Society
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• v.23 no.1
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• pp.167-178
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• 1994

To estimate coefficient matrix in autoregressive model, usually ordinary least squares estimator or unconditional maximum likelihood estimator is used. It is unknown that for univariate AR(p) model, unconditional maximum likelihood estimator gives better power property that ordinary least squares estimator in testing for unit root with mean estimated. When autoregressive model contains multiple unit roots and unconditional likelihood function is used to estimate coefficient matrix, the seperation of nonstationary part and stationary part of the eigen-values in the estimated coefficient matrix in the limit is developed. This asymptotic property may give an idea to test for multiple unit roots.

• Journal of the Korean Home Economics Association
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• v.47 no.1
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• pp.85-91
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• 2009

Dyeability and antimicrobial property of dyed pig skin with Coptis chinensis Franch was investigated. Dyestuff was extracted with water and concentrated. Pig skin was dyed and mordanted according to various dyeing temperature, dyeing time, dyestuff concentration, mordanting methods and kinds of mordants. The results of this experiment were as follows: 1. Dyeability of pig skin with Coptis chinensis Franch was best at 200%(owf) dyestuff concentration, 50${^{\circ}C}$ dyeing temperature, and 20min. dyeing time. 2. Pre-mordanting by Cu improved the K/S values of dyed pig skin. 3. Surface color and color difference of dyed pig skin showed various results according to the mordants used : generally their color was yellow, Al post-mordanted pig skin showed the greatest color difference. 4. Color fastness to drycleaning was considerably high in case of staining compared to fading. Fastness to light was improved by Cu-mordanting while other treatments were not effective. 5. Antimicrobial property of samples was not different (99.9%) between untreated and treated.

• Proceedings of the KSME Conference
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• 2008.11a
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• pp.1-6
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• 2008

Due to the self-similarity of Berkovich and conical indenters, different materials may show the same loaddepth curve for single indentation. In this study, we first compare the load-depth characteristics of conical and Berkovich indenters via finite element method. We also analyze the variation of load-depth curves with angle of Berkovich indenter, indentation parameters, and material properties. With numerical regressions of obtained data, we then propose dual-Berkovich indentation formulae for material property evaluation. The proposed approach provides the values of elastic modulus, yield strength and strain-hardening exponent and corresponding stress-strain curve with an average error of less than 3%. The method is valid for any elastic indenters made of tungsten carbide and diamond for instance.