• Computers and Concrete
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• v.14 no.4
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• pp.369-385
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• 2014

In the existing method for analyzing the liquid tightness of the outer concrete tank in an emergency LNG spillage, the temperature variation over time inside the tank, and the concrete properties dependent on temperature and internal moisture content, have not been taken into account. In this study, the analyses for a typical LNG concrete tank subjected to thermal load due to spillage were performed with three different cases: the existing method was adopted in the first case, the transient temperature variation was considered in the second, and the temperature-moisture content dependent concrete properties were taken into account as well as the transient states of temperature in the third. The analysis results for deformation, compressive zone size, cracking, and stress of reinforcements were compared, and a discussion on the difference between the results obtained from the different analysis cases was made.

• IE interfaces
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• v.15 no.2
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• pp.133-146
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• 2002

In July 2002, law of product liability will be established in Korea. Therefore, prevention for product liability(PL) will be immediately needed for many companies. So, in this paper, following topics will be discussed: 1) what are product liability and product safety, 2) why they are needed, 3) why important, 4) what's the difference between considering PL and not considering PL for companies, 5 ) what are risk management methods and risk evaluation system, 6) what is SASA(Systematic Approach to Accident Scenario Analysis) method for applying PL, 7) providing a final conclusion and discussion for future PL law.

• Korean Journal of Child Studies
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• v.20 no.3
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• pp.217-230
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• 1999

This study examined children's death anxiety by religion, previous death experience and the effectiveness of a death education program. Half of the subjects 60 nine-year-old elementary school subjects were assigned to the experimental group and half were assigned to the control group. The 6-week death education program for the experimental group included literature, role play, and discussion. A questionnaire and death anxiety scale for children were administered to all subjects. After the educational program, there was a significant difference in death anxiety scores, between the experimental and control groups. However, children's religion and previous experience with death had no significant relationship to their death anxiety or effectiveness of the death education program.

• Asia pacific journal of information systems
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• v.4 no.2
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• pp.165-187
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• 1994

This paper tests whether there are any differences in perceived effectiveness according to the range of outsourcing, and we tried to identify the reasons if any. By executing a field survey and T-test on composite success measure value of two types (integrated outsourcing type and backend outsourcing type), we testified that the perceived effectiveness of the two types in outsourcing was not different. Discussion fo the stududy result followed. First, 'integrated outsourcing type' does not generate very excellent performance. Second, so far the characteristics of 'integrated outsourcing type' such as strategic management of IS, activating end-user computing(EUC), and making the strategic partnership with vendors and so on have not been successfully utilized as expected.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2001.01a
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• pp.265-271
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• 2001

It is highly for the research in artificial intelligence area to be able to manage knowledge as human beings do. One of the fantastic natures that human knowledge management systems have is being active. Human beings actively manage their knowledge, solve conflicts and make inference. It makes a major difference from artificial intelligent systems. This paper focuses on the discussion of the features of that human knowledge systems, which underlies the active nature. With the features extracted, further research can be done to construct a suitable infrastructure to facilitate these features to build a man-made active knowledge management system. This paper proposed 10 features that human beings follow to maintain their knowledge. We believe it will advance the evolution of active knowledge management systems by realizing these features with suitable knowledge representation/decision models and software agent technology.

• International Journal of Contents
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• v.6 no.4
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• pp.101-107
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• 2010

I aim to discover that how greatly the curriculum of Life Dance department has had an effect on the career of students majoring in dance, with research objects being Life Dance department of two universities, located on the metropolitan area. The study method, called qualitative, includes some suggestions on the curriculum of the two and comparison, analysis of job-related materials; further, it involves discussion on the influence the curriculum has had on the career as dance trainers. The results from it are as follows; first, the curriculum of the department mostly consists of pure art such as Korean dance, modern dance, ballet, but has few creative life dance programs. Second, the employment into the art area has been more often than to the counterpart. Finally, it shows that a title of a department does not make a big difference and affect the employment rate. In conclusion, as the completion of the curriculum does not always guarantee a success, it is recommended that college students get some competent certificates related to dance.

• Journal of Korean Port Research
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• v.11 no.1
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• pp.121-128
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• 1997

To analyze the ocean wave more efficiently, more fine grids are used with relatively less computer memory. Each element of free surface is discretized into more fine grids because the ocean waves are much influenced by the mesh used in the finite difference scheme. According to the flow analysis, remarkable improvements could be seen in the free surface generation. The multi grid is applied to confirm the validity of scheme. The Baldwin Lomax turbulence model is used for the analysis of S103 Inuid ship. Finally some discussion on experiments was made for the physical phenomena of the viscous

• Fibers and Polymers
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• v.5 no.2
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• pp.145-150
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• 2004

Blends of poly(phenylene sulfide) (PPS) and polyethylene, either linear low density polyethylene (LLDPE) or metallocene-catalyzed polyethylene (MPE), that were prepared by melt blending, were investigated. From the rheological properties as determined by capillary rheometry, the melt viscosity of both PPS/LLDPE and PPS/MPE blends was low when PE was in dispersed phase, but high melt viscosity was observed for both blends with PPS in dispersed phase. Significant differences depending on the composition were found in the mechanical properties such as percent elongation at break and notched Izod impact strength. In addition, dispersed phase morphology of the blends was analyzed by a scanning electron microscope (SEM), together with brief discussion about the difference between them.

• International Journal of Aeronautical and Space Sciences
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• v.4 no.1
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• pp.19-25
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• 2003

A low speed wind tunnel test for the canard airplane model was conducted in KARI LSWT. To measure the required level of accuracy, the image system was applied for all elevator deflection and different canard incidence conditions. By doing so, the difference in aerodynamic characteristics between the forward swept and straight canards can be precisely evaluated, and the pros and cons of both canards arrangements can be discussed. Compared with both canard configurations at the same incidence angle setting, the straight canard has benefits in lift and drag, and the slope of pitching moment increases more moderately than the forward swept canard. The listed data and discussion would be useful to whom wants to design a canard airplane.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.24 no.11
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• pp.792-798
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• 2012

A general concept on the definition of the second law efficiencies of thermodynamic cycles is introduced. The efficiency is defined to be proportional to the entropy generation divided by the maximum possible entropy generation. This way of definition of the cycle efficiency is clear and concise and, moreover, follows faithfully the concept of the second law of thermodynamics. This definition is applied to heat engine, refrigerator and heat pump. The second law efficiencies of heat engine and refrigeration cycles are derived, which are the same as the existing ones, respectively. The second law efficiency of heat pump, however, finds to be different from the existing one. Discussion is given about the difference and its cause.