• Proceedings of the KSRS Conference
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• 2005.10a
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• pp.745-748
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• 2005

These days, vehicle is evolving from the isolated space of transportation to the third digital life space connected to the information world via wired and wireless internet and in which the various activities are possible. According to this trend, the speed of growth in the development of Telematics technology and standard is being accelerated due to the government's IT839 strategy and market needs in Korea. ETRI, TTA, and the Telematics Standardization Forum play key role in developing domestic Telematics standard of core technology needed by industry in relation with each other. The international standards are mainly developed by de-facto standardization organizations such as OSGi, OMA, ERTICO, etc. currently. In this paper, we discuss the trends and issues in Telematics standardization and future strategy.

• Proceedings of the Korea Concrete Institute Conference
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• 2001.11a
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• pp.1077-1082
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• 2001

The most recent building trend is going large, high rise, high strength as overlarge project is developing in domestic construction business. Belite cement has properties like low heat, excellent long term strength, and durability without admixture(fly ash, silica fume). so, Belite cement is suitable for mass structure which is needed high strength, high fluidity and low heat property. This study is to examine the possibility of site adoption microwave-use early strength estimation method. Based on the existed study related the portland cement, the interrelation between Belite cement and microwave-use early strength estimation method is required. In this study, interrelation between mortar and Evaluating strength estimation method is investigated before the concrete experiment.

• Korean Management Science Review
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• v.20 no.1
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• pp.37-49
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• 2003

There is an increasing need to use mobile Internet as a research tool as wireless technology has been developing rapidly. However, little research has been conducted to confirm methodological validity of mobile Internet survey. This study examines the possibility of using mobile Internet as a survey tool by comparing survey results of mobile and stationary Internet surveys with the same questionnaire. The results were analyzed from both economic and theoretical perspectives. Both mobile and stationary Internet survey sites were implemented with supports from domestic mobile and stationary Internet portals and telecommunication companies. The results show that there exist several differences between two survey methods. First, many respondents who use mobile Internet gave up at the early stage. However, once people continued to respond, they answered the questions to the end. Second, means and standard deviations of mobile internet respondents were higher than that of stationary Internet. Third, the results of two survey methods were significantly different by comparing construct validity that includes both discriminant validity and convergent validity. Finally, this paper ends with implications and limitations of using mobile Internet as a survey tool.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2002.11b
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• pp.799-804
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• 2002

In this paper the leakage prediction and rotordynamic analysis of an annular seal with a smooth rotor and spiral-grooved stator are performed. For developing a theoretical model, the three-control-volume analysis of the circumferentially-grooved seal is expanded by considering pressure reduction due to the pumping effect of spiral groove and pressure flow through the spiral groove. Results by the present analysis are compared with available experimental data. For leakage the analysis results generally show a reasonable agreement to the experimental results. For rotordynamic coefficients the analysis results show the same trend as the experimental results for rotor speed with spiral angles, but their magnitudes show somewhat large deviations.

• Journal of the Korean Professional Engineers Association
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• v.33 no.4
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• pp.12-16
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• 2000

Since the industrial revolution in 19 century, there had been a pro and con argument on which is better solution between privatization and nationalization in developing the infrastructure projects and in maintaining the infrastructure facilities worldwide. This paper introduces the privatization-nationalization wheel along with its advantage and disadvantage. At this stage according to the global trend, it is the time that the most of infrastructure projects are being developed by the private sector in the industrialized countries. It is mainly because the product or the services produced by the facilities of the infrastructure should be fully paid back by the end users according to the mechanism of the market economy. Some solutions have been suggested for the future development of infrastructure projects in S-N Korea.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 1999.06a
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• pp.53-80
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• 1999

Productivity and environmental conservation in nowadays trade-off and serious problem in agriculture. Precision farming is developing for solving the trade-off problem using systems approach and variable management. The systems approach is attributed to aiming at information-oriented agriculture, environmental-friendly sustainable agriculture, and complex system optimization . The variable management is composed of describing variability , variable-rate technology and decision support system. Three levels of technology development and three farming strategies are introduced for having a prospect. Describing the variability is the first step to promote it. Precision farming could be available for small scale farming as well as big scale farming. Paddy field precision farming will undergo in its distinctive way.

• Journal of the Korean Society of Food Culture
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• v.35 no.5
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• pp.407-416
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• 2020

Food tourism is recognized as a unique form of tourism product that combines traditions and regional characteristics and has become an international trend. However, research on food tourism in Korea is limited. Thus, this study investigated the selection attributes of food tourism in Italy, France and Japan. A qualitative study was conducted among 34 foreign food tourism experts on food tourism in their respective countries to find possible directions for Korean food tourism. As a result of this study, 'Food attraction', 'Traditionality', 'Locality', 'Convenience', 'Cultural Characteristics', and 'Appropriateness of price' were the attributes identified from the expert's comments. Marketing strategies such as improving quality of service and food itself, quality of service, developing diverse food tourism product, and building marketing channel will improve the status of food tourism in Korea.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2006.05a
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• pp.17-22
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• 2006

Anhydrous hydrazine and its methyl derivatives MMH and UDMH have been safety used as monopropellant and bipropellant fuels in thousands of satellites and expendable launch vehicles. Since KOMPSAT program, We have been developing skills on the hydrazine propulsion system for several years. This paper presents an overview of the hydrazine for the space application - propellant overview, material compatibility, handling cautions and the future of hydrazine systems.

• Korean Journal of Human Ecology
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• v.18 no.5
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• pp.1103-1113
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• 2009

Now in the 21st century, all the industries in our world are rapidly changing, including fashion trends and customers' needs as well. Fashion textile planning is also developing towards the direction where it could satisfy the merged sensitivity and incentive of the customers through an idea. The purpose of this study is to accentuate the importance of fashion material planning in fitting conventional patterns and eco-benign fabric materials. Accordingly, this study is mainly focused on the reflection of fabric planning characteristics to show tradition containing comfort and naturalness. As mixing with established fabrics and blending with natural/functional fabrics, and conforming to the trend of the seasonal fabric, it has developed a new structure and pattern by changing the basic source of traditional patterns to a computer aided design system. Therefore, four different types of items were basically up-graded by fitting it in with traditional patterns.

• Journal of Information Technology Services
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• v.8 no.2
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• pp.137-146
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• 2009

Recently the POS system market expands rapidly due to the advance of global restaurant franchises into domestic market and increase of speciality restaurants. Especially, demand for low-cost models increases sharply as small and medium-sized retailers and restaurants adopt the POS system actively. According to the current trend of the POS system, in this study, we develop an embedded-type wireless POS system using Zigbee communication, which can be used efficiently in spacious stores without space and/or time limit. The POS system is designed and implemented with three objectives: first, we develop embedded-type POS system cheaper than PC-type POS system, second, we develop a competitive product with high quality and low cost and last, we focus on developing a POS system which can be used in the food service industry.