• Journal of the Institute of Electronics and Information Engineers
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• v.50 no.6
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• pp.221-227
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• 2013

This paper proposes an improved steganalysis method based on image categorization. In general, most steganalysis methods extract the statistical moments based features which contain the global natures of images regardless of their inherent characteristics. However, the steganalysis method based on the statistical moments leads to degraded performance by applying to images with different complexity. In this paper, we decompose an 8-bit image into an upper 4-bit plane and a lower 4-bit plane, and categorize the image with two classes according to the correlation coefficient between decomposed sub-images. Two independent steganalyses can be performed for the categorized images. Since our method uses independent steganalysis technique according to the image category, it can reduce the drawback of the steganalysis methods utilizing the statistical moments. The performance of the proposed scheme is compared with well-known four steganalysis methods. Experiment results show that the proposed scheme has higher detection rate than previous methods.

• Journal of the Ergonomics Society of Korea
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• v.36 no.3
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• pp.231-244
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• 2017

Objective: This study aims to understand the occupational injury characteristics of the workers in the motor vehicle parts (automobile parts) manufacturing industry and to present basic guidelines on accident prevention through accident analysis. Background: There occur many occupational injuries in the motor vehicle parts manufacturing industry. But there were few researches for the occupational injuries of the workers in the motor vehicle parts manufacturing industry. Method: This study analyzed the data of occupational injuries of 1,609 workers in the motor vehicle parts manufacturing industry in 2015. The accident characteristics were analyzed by dividing them into worker related factors and accident related factors. Results: Among the occupational injuries of the workers in the motor vehicle parts manufacturing industry, 80.6% of the victims were males, 64.0% were older than 40. 57.8% of the victims were employed by the companies with less than 50 workers. In addition, there was a difference in accident characteristics according to age, work experience, employment type, events or exposures, accident time of the day, agents, natures of injuries and illnesses, injured organs and injured body part. Conclusion: It is important to prevent equipment/machinery accidents. For this purpose, more efforts should be made to establish safety measures faithful to the basics of safety devices and safety work procedures. It is also suggested that prevention of disasters should be intensively carried out for workplaces with less than 50 employees and middle-aged and elderly people. Application: The result can be used to present guidelines for preventative measures for the workers in the motor vehicle parts manufacturing industry including safety education/training.

• Journal of Agricultural Extension & Community Development
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• v.17 no.4
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• pp.799-825
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• 2010

The purpose of the present study is to provide policy implications for successful development of the metropolitan economic zone in Korea followed by in-depth case studies on the US Metropolitan Economic Region. This study looked into diverse experiences of the US mega regions investigating their key strategies, requirements and standards, etc. Urban areas in the US are designated based on CBSA, a standard for statistical area since 1950. The US has a clear standard to define rural and suburban area and is trying to reflect urban structural changes including suburbanization. The US annexation system is relatively simple to operate. Furthermore, the system helps the growth of rural areas by gradually incorporating rural areas into urban areas. We found that action plans of the US mega regions facilitate strategic growth and development for balanced territorial development, incorporating multi-dimensional and comprehensive approaches. We also found that the US mega regions are designated with regard to the local natures. Couple of policy implications were extracted from the US experiences. First, since the construction of mega regions in Korea concerns less on the inter-regional connections with other regions, we need to incorporate diverse standards to divide the regions with respect to the spatial and local characteristics. Second, local governments should collaborate with each other for successful economic development of the metropolitan economic zones. Administrative districts renovation can be a immediate and effective solution to facilitate the collaboration. We recommended to consider consolidating administrative areas to construct successful metropolitan economic zones.

• The Journal of Korean Academic Society of Nursing Education
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• v.4 no.1
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• pp.38-52
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• 1998

The aim of this study is to analyze the meaning of Korean elders' reminiscences by analysing korean novel literature from 1930s to 1990s. The results of this study are as follows : The moaning of elders' reminiscences are the reflecting on their life, conquesting the excessive fondness the regrecting, the pursuiting of the powers, the pursuiting of the love(Jeong) and the conformation of their exsistence. Elders have tried to examine their life through reflection on their life tha? they did not live good life as son and daughter for parents and as parents for children and that they have foolishly lived, on dream that they did not come true, on their learning that they did not unsatisfied. But elders conquest the excessive fondness. They have felt their limitations of power in the conflict of human relation, the economic matter and the difficult predicament, and have finally accepted their life as it is by conquesting from their tenacity. It is dynamically found that both the reflecting on their life and conquesting of the excessive fondness. And they pursuit the powers. It means the pursuit of the vital powers, the vigorous powers and the competency, Elders have pursuited their vitality, vigor and competency through their reminiscences and have wanted to be recognized by others as a powerful being. These have dynamic and compounded aspects. Elders have pursuited the purely love (Jeong) through their reminiscence togather with their sisters and brothers. And the confirmation of their exsistence refer to through their own situation of health, condition, children, neighbourhood and doing their duty as a human. Elders have confirmed the present value of their being through the reflecting the present, past self, other men around themselves, children, neighborhood and the doing their human duty as a good men. Therefore the results of this study can offer new view on the elders' reminiscences that we have to understand them as a process as what they are, escaping from the simple logic that elders' reminiscence have a positive or a negative effects. Also, this study which have examined the natures of Korean elders' reminiscences can cast a new light on elders' nursing proper for Korean culture.

• Journal of the Korean Society of Costume
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• v.51 no.8
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• pp.13-24
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• 2001

With development of our society, the Hanbok, which is the traditional clothing of our country, is mainly used only on the festive days or marriage ceremony or so as a ceremonial dress and seems lack in wearing as plain clothes. But in the other hand. with general public became no more unfamiliar with the representation of Korean realities and accepted them as a part of life in 90', the modernized Hanbok that features seasoning the practicality into the aesthetic natures of the traditional Hanbok has been rooting in our country. The existing researches on the modernized Hanbok, however. are focused only in the design of the modernized Hanbok, the present conditions of the modernized Hanbok business and the actual condition of the modernized Hanbok, and the aspect in systematic research on the customers'purchasing behavior is weak in comparison with other areas. The goal of this research, by focusing in the value which is the most basic concept of psychological components indicating the customers' behavior, was : first. to make clear the value of the modernized Hanbok and divide the customers into various groups : second, to make clear the characteristics on the population statistics by the groups divided on the clothing value : third, to make clear the individual differences among the customers of the modernized Hanbok : and forth, to make clear the basis on which to estimate the modernized Hanbok by the customers'groups. This research adopted the surrey inquiry. The first investigation is carried out on the modernized Hanbok purchasers and salesmen in Insa-dong where the modernized Hanbok business is massed. As correction and complement for the first investigation. the final investigation is carried out in Oct. 2000 with the 480 persons from twenties to sixties consisting of the modernized Hanbok purchasers and experienced persons in wearing it.

• The Journal of Korean Medicine
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• v.18 no.2
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• pp.148-154
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• 1997

In the pharmacology of traditional Korean medicine, each drug has its own specific characters. The different characters of drugs are employed to treat diseases, rectify the hyperactivity or hypoactivity of yin or yang, and help the body restore its normal physiological functions, consequently curing the diseases and restoring health. The various characters and functions of these drugs concerning medical treatment include drugs' properties, flavours, actions of lifting, lowering, floating and sinking, channel tropism, toxicity, etc. Among these theories, theory of properties and flavours of drugs provides the basis for drug analysis and application. 'Property' refers to the cold, hot, warm or cool nature of a drug. These properties of drugs are so sorted out according to the different actions of the drugs on the human body and thier therapeutic effects. Drugs which cure heat syndrome(yang syndrome) have a cold or cool property, whereas drugs which cure cold syndrome (yin syndrome) have hot or warm property Drugs of cold and cool-natured and drugs of warm and hot natures are of opposite properties. A cold-natured drug is different from a cool-natured on only in degree, and so is a warm-natured drug from a hot-natured drug. Most of the cool- or cold- natured drugs have the effects of clearing heat, purging fire, removing toxic substances, and nourishing yin, and are uese to cure heat syndromes. On the contrary, drugs of warm or hot nature usually have the effects of dispersing cold, warming up the interior, supporting yang, and treating collapse, and are therefore used to treat cold syndromes. We thought that the property of drug may be related to the autonomic nervous system in western medicine. In other words, drugs of warm or hot nature increase heart rate or acts like sympathomimetics, and drugs of cool or cold nature decrease heart rate or acts like para sympathomimetics . According to this hypothesis, we administrated some drugs to isolated rat right atrium in magnus tube. But there is no correlation between 'property' in traditional Korean medicine and autonomic nervous system in western medicine.

• The Journal of the Korea Contents Association
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• v.13 no.11
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• pp.699-713
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• 2013

This study has three purposes. Firstly, we try to extract the types of the motives of OCBO & OCBI instead of global OCB. Secondly, we compare the types of the motives OCBO & OCBI and those of the motives of global OCB. Finally, using another set of P-sample, we try to find out whether the four types of the motives of OCB found in the study of Kim & Lee(2013) could be found once again. The findings are as follows. First, we found the four types of the motives of OCBO, and three the types of the motives of OCBI. Second we found some similarities and differences at the same time between the types of OCBO, OCBI, & global OCB. Third, except the instrumentality-based type, three of the four types found in the study of Kim & Lee(2013) reappeared in this study. In conclusion, these findings suggest that OCBO & OCBI, the sub-dimensions of OCB, have their own distinctive natures respectively.

• Journal of Korea Multimedia Society
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• v.13 no.10
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• pp.1474-1486
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• 2010

In this paper, we propose an algorithm which represents the distance depiction technique of real painting that named "Aerial Perspective" in painterly rendering. It is a painting technique that depicts the attenuations of light in the atmosphere, and the scattering effect is changed by the distance, altitude and density of atmospheres. For the reflection of these natures, we use the depth information corresponding to an input image and user-defined parameters, so that user changes the effect level. We calculate the distance and altitude of every pixel with the depth information and parameters about shot information, and control the scattering effects by expression parameters. Additionally, we accentuate the occluding edges detected by the depth information to clarify the sense of distance between fore and back-ground. We apply our algorithm on various landscape scenes, and generate the distance-emphasized results compared to existing works.

• The Journal of the Korea Contents Association
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• v.15 no.6
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• pp.421-431
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• 2015

This study aims to examine potential labor migration between Korea, China, and Japan by Harris-Todaro model which is enhanced in the presence of expected income differential. The results suggest that Korean labor forces are bi-directionally migrated to China and Japan, simultaneously, and Chinese labor forces have been switched from inflow to outflow. On the other hand, Japanese labor markets are characterized by inflow from Korea, and outflow to China. The nature of labor markets in Northeast Asia have been largely transformed such that inflow of immigrants is gradually intimidated. This is mainly due to the fact that the labor markets are gradually homogenized in this region. To this end, it could be tentatively concluded that the labor markets in Northeast Asia seem to be operated by substitutionary rather than complementary natures.

• 한국해양학회지
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• v.30 no.4
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• pp.262-270
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• 1995

A comparative study to understand the changes in physical and sedimentological natures was carried out in the Keum Estuary before and after the gate-close of Keum River weir. After closing of weir-gate maximum tidal current speed decreased about 30∼40% compared with that of the previous gate-opening period. Water masses also represent vertical stratifications both on water salinity and water transparency. The Keum Estuary seems to be changed from the well-mixed type estuary during the gate-opening period to the "partially-mixed type" and/or "salt-wedge type" estuary after the closing of weir-gate. The concentrations of suspended matter range 10∼100 mg/l in surface waters after the gate-close of Keum River Weir, representing about 1/4 to 1/3 decrease than those during the gate-close of Keum River Weir, representing about 1/4 to 1/3 decrease than those during the gate0opening period. Such decrease of suspended mater appears to be due to the decrease in the resuspension of bottom sediments, and also due to the vertical stratification of water masses that prevented the upward diffusion of turbid bottom waters. It is, therefore, expected that the depositional environment of Keum Estuary has been changing into the low energy conditions after the closing of weir gate, resulting in the rapid deposition of fine suspended matters within the Keum Estuary.