• Journal of Korea Technology Innovation Society
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• v.11 no.1
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• pp.46-71
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• 2008

Although the volume of mobile internet services has increased continually over the years, the rapid diffusion has still fallen short of expected quality. This paper considers mobile internet service industry in Korea as a system failure due to structural problems and attempts to identify systemic imperfection mechanisms from the supply side. The problems of mobile internet industry in Korea are categorized into interaction failures, institutional failures and capabilities failures which contribute to system failure and at the same time, failure types are linked to each other. It is needed to improve policy and institutions in operation and develop new policy for contents providers to promote mobile internet industry. This research findings will contribute to policy making to promote mobile internet service industry and development of sectoral system for emerging industries.

• The Journal of Fisheries Business Administration
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• v.37 no.2 s.71
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• pp.61-83
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• 2006

In Side of Supply and Demand of Fisheries Products, The Aquacultural Industry stayed in subsidized situation for the whole fishery industry of korea when it's dawned. But now a day, the Aquacultural Industry has been developed to unique industry itself, and it could be said the Hoe - korean style Sashimi or Sushi culture of korea can't exist without its aquacultural industry. So it could be said that the Aquacultural industry is not only a part of the fishery industry but also inevitable unique industry. The main objective of this paper is to analysis the present situation for production of Flatfish, distribution of Flatfish, and consumption structure of Flatfish. Especially, the production for aquacultural Flatfish in 2005 has been raised over 38 times against the production in 1990, and it takes the status as the major fish which leads the domestic aquacultural industry compare with others. The distribution of Flatfish can be divided to the domestic and export mainly. In field of its domestic distribution, Flatfish is the major item with Rockfish, and the deal of its over 90% happens in Similarity Fishery Wholesale Markets such as In-chon, Ha-nam, and Bu-san Fishery Wholesale Market not in the common distribution process of the fishery products. At present, the exporting of Flatfish take 13.9% among the whole Aquacultural Industry of korea, and Flatfish mainly export to Japan. Also, through the development of chinese economy, Hoe consumption culture is expanded gradually. And the future of exporting Flatfish is very bright because of developing of the U.S. market. The brief introduction of the consumption style of live fish is as belows. According to the research, generally the most of korean consumers prefer individual item as their food to combination style in korean Hoe consumption culture and the favorite item of korean consumers are Flatfish and Rockfish.

• Journal of the East Asian Society of Dietary Life
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• v.16 no.2
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• pp.215-225
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• 2006

This study was peformed to evaluate the served menu and investigate the management of food service in Korean Buddhist temples. Among the available temples in the nation, 34 temples were carefully selected considering practice type, location and the gender characteristics. A survey about meal preparation and management was conducted to the cooking staff in each the temple using questionnaire by interview between Jan 2004 and Aug 2004. The menus over A five consecutive days menu was were also collected for analysis to analyse. Civilian cooking staffs were preparing meals in 23(67.6%) of the temples and the proportion 18(52.9%) of the temples were planning their own the menus was 52.9%. Most kitchens in the temples were equipped with modernized kitchen appliances. The major food supply was the conventional market Even though the majority of the temples were using processed food, Korean fermented sauces as the most traditional temple food products were prepared by themselves. There were 114 menu patterns and the most frequently served meal pattern was ${\ulcorner}Rice+Soup+Kimchi+3{\sim}4\;side\;dishes{\lrcorner}$. Analyzing from the cultural characteristics point of view, the most frequently served dish type was 'Korean'(90%), while other types were 'modified Korean'(3.7%) and 'Western'(2.7%). The varieties of Various 438 different dishes provided were 438 provided and with Kimchies (19.8%), Seasoned vegetables(16.8%) and Rice(11.0%) being the highest were high in frequency when dishes were categorized into dish classes. Among the main dishes, the frequency of gruel(13.7%) was relatively high. These results suggest the need to conduct Based upon the results found, it was required to continue further research about preserving and inheriting the originality and uniqueness of the temple food.

• Journal of Computational Design and Engineering
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• v.1 no.2
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• pp.140-151
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• 2014

Storing, and the loading and unloading of materials at production sites in the manufacturing sector for mass production is a critical problem that affects various aspects: the layout of the factory, line-side space, logistics, workers' work paths and ease of work, automatic procurement of components, and transfer and supply. Traditionally, the nesting problem has been an issue to improve the efficiency of raw materials; further, research into mainly 2D optimization has progressed. Also, recently, research into the expanded usage of 3D models to implement packing optimization has been actively carried out. Nevertheless, packing algorithms using 3D models are not widely used in practice, due to the large decrease in efficiency, owing to the complexity and excessive computational time. In this paper, the problem of efficiently loading and unloading freeform 3D objects into a given container has been solved, by considering the 3D form, ease of loading and unloading, and packing density. For this reason, a Group Packing Approach for workers has been developed, by using analyzed truck packing work patterns and Group Technology, which is to enhance the efficiency of storage in the manufacturing sector. Also, an algorithm for 3D packing has been developed, and implemented in a commercial 3D CAD modeling system. The 3D packing method consists of a grouping algorithm, a sequencing algorithm, an orientating algorithm, and a loading algorithm. These algorithms concern the respective aspects: the packing order, orientation decisions of parts, collision checking among parts and processing, position decisions of parts, efficiency verification, and loading and unloading simulation. Storage optimization and examination of the ease of loading and unloading are possible, and various kinds of engineering analysis, such as work performance analysis, are facilitated through the intelligent 3D packing method developed in this paper, by using the results of the 3D model.

• Journal of the Korea Society of Computer and Information
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• v.9 no.1
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• pp.79-86
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• 2004

In general, operating system is offering the security function of OS level to support several web services. However, it is true that security side of OS level is weak from many parts. Specially, it is needed to audit/trace function in security kernel level to satisfy security more than B2 level that define in TCSEC(Trusted Computer System Evaluation Criteria). So we need to create audit data at system call invocation for this, and do to create audit data of equal format about almost event and supply information to do traceback late. This Paper Proposes audit/trace system module that use LKM(Loadable Kernel Module) technique. It is applicable without alteration about existing linux kernel to ensure safe evidence. It offers interface that can utilize external audit data such as intrusion detection system, and also offers safe role based system that is divided system administrator and security administrator These data will going to utilize to computer forensics' data that legal confrontation is Possible.

• Proceedings of the KIPE Conference
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• 2001.10a
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• pp.295-300
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• 2001

A variety of high voltage DC power supplies employing the high frequency inverter are difficult to achieve soft switching considering a quick response and no overshoot response under the wide load variation ranges which are used in medical-use x-ray high voltage generator from 20kV to 150kV in the output voltage and from 0.5mA to 1250mA, respectively. The authors develops soft switching high voltage DC power supply designed for x-ray power generator applications, which uses series resonant inverter circuit topology with a multistage voltage multiplier instead of a conventional high voltage diode rectifier connected to the second-side of a high-voltage transformer with a large turn ratio. A constant on-time dual mode frequency control scheme operating under a principle of zero-current soft switching commutation is described. Introducing the multistage voltage multiplier, the secondary transformer turn-numbers and stray capacitance of high-voltage transformer is effective to be greatly reduced. It is proved that the proposed high-voltage converter topology with dual mode frequency modulation mode control scheme is able to be the transient response and steady-state performance in high-voltage x-ray tube load. The effectiveness of this high voltage converter is evaluated and discussed on the basis of simulation analysis and observed data in experiment.

• Journal of Energy Engineering
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• v.27 no.3
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• pp.21-27
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• 2018

In accordance with the implementation of the Zero Energy Building Certification System, it for the activation and expansion of the private sector is being steadily upgraded. Also The government has set up a step-by-step mandatory roadmap until it is expanded to the private sector, starting with the public sector. We analyzed the energy requirements of existing buildings from 2016 to 2017 and the by load relationships of major factor. Of the existing buildings, 714 buildings in central and southern areas excluding residential buildings such as apartments and officetels were classified and their primary energy requirements were analyzed. As new design technologies are applied, the demand for energy from the passive side is steadily declining. In addition, there is a need to interpret various methods to improve the zero energy building certification standard in the point that the zero energy building pilot project is continuously carried out in relation to the activation of renewable energy supply.

• Korean Journal of Clinical Laboratory Science
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• v.49 no.3
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• pp.316-321
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• 2017

The occurrence of subclavian steal syndrome is possible in patients with either severe stenosis or occlusion in the left proximal subclavian or brachiocephalic arteries. Limited and insufficient blood flow in the vessel with a lesion induces blood supply from the opposite side via any of the connected vessels, which is called a subclavian steal phenomenon. The duplex sonography is useful for detecting this phenomenon. Some patients who experience this phenomenon complain of vertebrobasilar insufficiency, such as headache or numbness and weakness in the arm, and so on. Subclavian steal syndrome means subclavian steal phenomenon accompanied by these symptoms. We present a patient with focal severe stenosis of the brachiocephalic artery, manifested as blood flow reversal in the vertebral, and a "to-and-fro" waveform pattern in the external carotid, internal carotid, and common carotid arteries.

• Journal of Oriental Neuropsychiatry
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• v.13 no.1
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• pp.3-18
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• 2002

Hypertension excessively affects national health is the basic disease that causes death and disablement after the middle-aged. Therefore, The detection and control of hypertension is essential to health care. In general, It is known that the systolic blood pressure should be below 140mmHg, the diastolic blood pressure should be below 90mmHg. Presently, the treatment of hypertension is mostly taking anti-hypertension drug, diet and stability. but Taking anti-hypertension drug has such side effects as depression. and that, We were making a study of various treatments of hypertension. In a course of hypertension study, We applied aromatherapy to the control of hypertension. Aromatherapy is the practice of using of volate plant oils including essential oils, for psychological and physical well-being. Essential oils are drawn into the body by the sense smell not only does the aroma of the true plant stimulate the brain to the trigger a positive effect, but supply physical benefits also. In Europe and North America, The study and development of aromatherapy is lively in progress. In the control of hypertension, We applied Lavender, Majoram, Ylang-Ylang to forty-two hypertensive patients. After aromatherapy for controlling hypertension. We measured the changes of the systolic blood pressure & the diastolic blood pressure of patients by time. As the result of above study, We identified the significance of blood pressure down by aromatherapy.

• Journal of Korean Institute of Industrial Engineers
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• v.37 no.1
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• pp.64-73
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• 2011

Oil price prediction is an important issue for the regulators of the government and the related industries. When employing the time series techniques for prediction, however, it becomes difficult and challenging since the behavior of the series of oil prices is dominated by quantitatively unexplained irregular external factors, e.g., supply- or demand-side shocks, political conflicts specific to events in the Middle East, and direct or indirect influences from other global economical indices, etc. Identifying and quantifying the relationship between oil price and those external factors may provide more relevant prediction than attempting to unclose the underlying structure of the series itself. Technically, this implies the prediction is to be based on the vectoral data on the degrees of the relationship rather than the series data. This paper proposes a novel method for time series prediction of using Semi-Supervised Learning that was originally designed only for the vector types of data. First, several time series of oil prices and other economical indices are transformed into the multiple dimensional vectors by the various types of technical indicators and the diverse combination of the indicator-specific hyper-parameters. Then, to avoid the curse of dimensionality and redundancy among the dimensions, the wellknown feature extraction techniques, PCA and NLPCA, are employed. With the extracted features, a timepointspecific similarity matrix of oil prices and other economical indices is built and finally, Semi-Supervised Learning generates one-timepoint-ahead prediction. The series of crude oil prices of West Texas Intermediate (WTI) was used to verify the proposed method, and the experiments showed promising results : 0.86 of the average AUC.