• The Journal of Korean Society for Radiation Therapy
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• v.18 no.2
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• pp.67-73
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• 2006

Purpose: The number of patients receiving radiotherapy has increased every year and will keep increasing in the future. Therefore, the technique of radiotherapy is developing from day to day, as a result of it, the quantities of image and data used for radiotherapy are also considerably increasing. Therefore, there have been many difficulties in storing, keeping and managing them. Then, we developed and applied this system for improving complicated work process as well as solving these problems with the collaboration Medical Information Team. Materials and Methods: We exported its image at R & V (Record and Verify: Varis vision, Varian, USA) system and planning system after giving some code to be able to access from management system(RO) for department of radiation oncology to PACS. And, we programmed their information by using necessary information among many information included in DICOM head. Results: All images and data generated by our working environment (Simulation CT, L-gram image and internal body structure, DRR, does distribution )were realized at PACS and it became to be possible for clear image to be printed from any computer in department of radiation oncology. Conclusion: It was inevitable to use film during radiotherapy for patients in the past, however, due to the development of this system, film-less system became to be possible. Therefore, the darkroom space and its management cost in relation to the development process disappeared and it became to be unnecessary for spending tangible and intangible financial expense including human resources, time needed for finding film storing space and film and purchasing separate storing equipment for storing images. Finally, we think this system would be very helpful to handle ail complicated processes for radiotherapy and increasing efficiency of overall working conditions.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.30 no.9C
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• pp.939-948
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• 2005

In EBCOT, the context extraction process takes excessive calculation time and this paper proposed a method to reduce this calculation time. That is, if a coefficient is less than a pre-defined threshold value the coefficient and its descendents skip the context extraction process. There is a trade-off relationship between the calculation time and the image quality or the amount of output data such that as this threshold value increases, the calculation time and the amount of output data decreases, but the image degradation increases. Therefore, by deciding this threshold value according to the network environments or conditions, it is possible to establish a network-adaptive context extraction method. The experimental results showed that the range of the threshold values for acceptable image quality(better than 30dB) is from 0 to 4. The experimental results showed that in this range the Resulting reduction rate in calculation time was from $3\%\;to\;64\%$ in average, the reduction rate in output data was from $32\%$ to $73\%$ in average, which means that large reduction in calculation time and output data can be obtained with a cost of an acceptable image quality degradation. Therefore, the proposed method is expected to be used efficiently in the application area such as the real-time image/video data communication in wireless environments, etc.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.3
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• pp.527-533
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• 2017

As the clothing industry has advanced, dyeing technologies using various dyes have been developed. In recent years, interest in natural pigments has been increasing because of the negative impact of synthetic pigment on human health; therefore, development and application of microbial pigments is demanded. In this study, the dyeing effects on multifiber fabrics and biological activity were assessed using violet natural pigment from the marine bacterium, Microbulbifer sp. PPB12. The violet pigment produced by cultivation of Microbulbifer sp. PPB12 using Marine broth 2216 for 3 days was extracted using ethanol. Once dissolved in 20% ethanol, the violet pigment could be used to dye bleached cotton, diacetate, and especially polyamide. The optimal temperature, time, pH, and bath ratio under the dyeing conditions were $80^{\circ}C-90^{\circ}C$, more than 1 hour, pH 4-6, and 1:25, respectively. The mordant treatment was more suitable for color expression when $Na_2SO_4$ was used after 10 minutes of dyeing, but no significant difference was observed from untreated samples. The violet pigment also showed antibacterial activity against B. subtilis. The results of the present study indicate that the marine bacterial pigment could be an alternative for textile dyeing as a natural dye with antibacterial activity.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.3
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• pp.270-276
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• 2017

Previous studies of the effects of comparative advertising did not consider that comparative advertising should satisfy its legal conditions otherwise it would be unfairly comparative advertising. In this context, this study reviewed the current legal definition of 'unfairly comparative advertising' to clarify it by the definition of unfairly comparative advertising of the Guideline of Judgement of Comparative Labeling or Advertising based on the Act on Fair Labeling and Advertising. In addition, this study confirmed that comparative advertising was banned by the Monopoly Regulation and Fair Trade Act, which was the previous act on unfair labeling or advertising, and identified differences between the two Acts in regulating unfairly comparative advertising. This study analyzed 354 adjudication cases of unfairly comparative advertising based on the regulation of Monopoly Regulation and Fair Trade Act. As a result, the definitions of the two Acts of unfairly comparative advertising were found to correspond to each other. These results suggest empirically that comparative advertising was not banned legally in the past and the definition and judgement standards of unfairly comparative advertising have not been changed.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.11
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• pp.248-255
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• 2016

The amount and diversity of information is increasing, as is the information integration connecting data among the related institutions. In the defense field, DTAQ, which is in charge of the quality of military supplies, is attempting to collect and analyze the information which is related with it. In addition, the object of information integration is to expand civil data as well as defense data. There are many ways to integrate data in various environments. In the defense field, which needs enhanced security, it is necessary to establish and apply the information integration methods which are enhanced with more security. In this study, the framework and architecture of information integration was designed by considering task requirements and security conditions. As a result of example application of this framework for information systems to the selected 4 institutions, it was confirmed that the task can be performed through data connections. From the study result, integration architecture which can be applied securely in defense field was suggested. The data accumulated by using this framework with strengthened security are expected to be utilized for the quality improvement of military supplies.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.12
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• pp.270-284
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• 2016

The purpose of this study was to understand the essential structure and meaning of self-management intervention for breast cancer survivors by using non-pharmacological approaches. The study participants were 10 breast cancer survivors who were completing cancer treatment that involved surgery, chemotherapy, and radiation therapy. Data collected between August 2014 and February 2015 at E Hospital in S city were analyzed by using Colaizzi's phenomenological method. Outcomes were classified into seven essential themes: 1) application of comfort measures to alleviate ongoing symptoms, 2) movement to change physical conditions, 3) special herbal intake to prevent recurrence, 4) a specially designed diet plan for health self-management, 5) constant awareness of complementary and alternative medicine, 6) unmet needs treated by one's own doctor's prescription, and 7) future life toward a nature-friendly environment. The study results contribute to a deeper understanding of self-management interventions in the daily lives of Korean breast cancer survivors. In addition, results provide an essential resource, based on actual self-management styles, that will help survivors to obtain guidance and participate in appropriate programs.

• Korean Security Journal
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• no.12
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• pp.117-147
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• 2006

This study aims to propose efficient way to operate the security guarding system from the perspective of administration, policy, law, institution and operation as to the private security guarding system as the Korean security guarding system needs multifaced analysis and measure to ensure efficient operation. The growth strategy has to be restructured and segmentation market needs to be driven in order to cope with the changing conditions of company from the perspective of administration. And private security guarding service companies must refrain from excessive competition while improving the contracting method such as minimum price bidding, etc. From the perspective of policy, the functions of relevant organizations such as the National Police Agency, security association, etc, and mutual cooperation must expand. Also, the profit generation event needs to be privatized and the more positive perception toward the private security guarding service is necessary. In addition, security exhibition and seminar can be expanded to lay the groundwork for the advancement of private security system. From the legal and institutional perspective, the security guarding service related law must be revised and the certification system must b introduced to cope with the changing requirement. The security guarding instructor system must be strengthened to ensure a faithful and earnest implementation of duty to instruct, supervise and educate security guarding personnel. From the perspective of security guarding system's operation, professional security technique must be introduced and applied, and the volunteer application system must be established. In addition, standard 'security guarding manual' must be crafted, and the equipment for security guarding must be modernized to ensure an efficient operation of private security guarding services.

• Hwankyungkyoyuk
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• v.24 no.4
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• pp.111-128
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• 2011

This study was aimed at developing a common curriculum for the department of environmental education from 5 colleges of education. The need and background of curriculum reform can be summarized as follow; first, it has been recognized that new national curriculum of 2009 and 2011 created need for training teachers equipped with more integrated competency. Second, global environmental problems such as climate change and energy crisis asked for more responsible choice and action from all citizens. Third, the extremely low hiring rate resulted in the consideration of new working fields for teacher students majoring in environmental education. Fourth, the expansion of new environmental education paradigms including education for sustainable development called for practicing reconstruction of both contends and methods. From a series of research processes including analysis of current curriculum, DACUM, opinion survey and interest groups review, several new approaches for developing new curriculum had been identified as follow; first, content areas of environmental education should be extended beyond environmental natural science. Second, new learning approaches such as project-based learning need to be emphasized for strengthening the identity of environment as a separate subject. Third, more selective majoring system need to be applied in connection with environment government officials, researchers, and social environmental educators. It was recommended that the application of new curriculum developed by the study would be evaluated and managed by teaching conditions surrounding each of the five university members joined this developing processes. However, it needs to be noted that there is not much time because we had experienced zero hiring rate for the last 4 years and environmental policy and education programs are moving rapidly toward sustainable development.

• Proceedings of the KWS Conference
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• 2002.10a
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• pp.570-576
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• 2002

Application of the aged Inconel 718 in hydrogen environment is seriously restraint by its high hydrogen embrittlement (HE) sensitivity. m previous researches, we have suggested the possibility and applicability of the laser surface annealing (LSA) process in improving the HE resistance of this alloy. Sequentially, a study on the effects of the precipitates in the Inconel 718 on its HE sensitivity was conducted in this research. Firstly, flat bar specimens were heat-treated to obtain various kinds of precipitation microstructures concerning the ${\gamma}$" phase and the 6 phase. Hydrogen was charged into the specimen by a cathodic charging process. The loss in reduction of area (RA) caused by hydrogen charging was used to assess the HE sensitivity. The HE sensitivity of the alloy was lowered with decreasing the volume fraction of ${\gamma}$". Moreover, it was possible to increase the HE resistance of the aged alloy by dissolving the $\delta$ phase, keeping the strength at the same level as that of the common aged alloy. Thus, we concluded that both the $\delta$ phase and the ${\gamma}$" phase affected the HE sensitivity of Inconel 718. Next, two kinds of notch tensile specimens were fabricated, one kind having $\delta$ phase and the other having no $\delta$ phase. All these specimens were aged via the same aging heat treatment process. The LSA process annealed a thin layer of the notch bottom of each specimen. One specimen of each kind was charged with hydrogen by the cathodic hydrogen charging process. Loss in the notch tensile strength (NTS) caused by hydrogen was used to evaluate the HE sensitivity. It was found that while the HE sensitivity of conventionally aged Inconel 718 was decreased by the LSA process, the HE sensitivity of the $\delta$-free aged Inconel 718 could further be decreased. Therefore, for applications in hydrogen environments, it is possible to fabricate alloys with both good HE resistance and high strength by controlling the precipitation conditions, and to improve HE resistance further via applying the LSA process.

• Journal of Korean Society on Water Environment
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• v.32 no.1
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• pp.30-35
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• 2016

Urban areas generate large amounts of stormwater and non-point source (NPS) pollutants during rainfall events. These are caused by various land use runoffs, vehicular and human activities and increased impervious cover. The increased runoff and NPS pollutants cause water quality deterioration in the receiving waters and adversely affect the aqua-ecosystem. These environmental impacts could be reduced through the application of low impact development (LID) techniques. In Korea, more than 80% of the total rainfall occurs in summer and most of these were 10 mm or less. Therefore, if the LIDs developed were able to cope with rainfall of 10 mm and below, NPS management could be efficiently conducted. This research was performed to determine the effect of varying amounts of rainfall on the performance capability of an established infiltration and filtration facility (IF facility) that can be applied to Korea's common rainfall ranges. The IF facility area was 1.75% of the catchment area, however the facility treated more than 40% and 60% runoff volume and pollutant reduction respectively for a 10 mm rainfall. Lastly, higher volume and pollutant reduction could be attained when the LID area was at least 2% of the entire catchment.