• Proceedings of the Korea Concrete Institute Conference
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• 2002.10a
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• pp.501-506
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• 2002

Contemporary architecture calls for a wide range of surface textures and treatments. A surface compatible with the architect's design may vary from a glass-smooth finish to one requiring special sculptured ornamentation. These surfaces require many different types of form sheathing and lining. The purpose of study development new design form and made elaborateness shape. Easy to used in field that architecture finish material not used expect effective reduce of working hours, personnel expenses, architecture finish material, cost. After this, building wall apply a variety shape in concrete surface

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2003.10a
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• pp.34-38
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• 2003

In metal working, cold forging that has profit to satisfy dimension accuracy is using in various manufacturing products. Recently, most of the interest thing is precision forging of gear. Gear forging product is more strength than broaching gear, and it has many advantages with reduction of factory expenses. The reason of difficulty to improve accuracy of gear dimension compare to another products is the dimension accuracy is very high, approximately 10$\mu\textrm{m}$, and because die of involute teeth and elastic strain of forged tool differ from standard curve. This paper represent quantitative analysis of die and teeth of forged tool, namely difference of curves, with experiments and analyze the factor of dimension gap, finally, will design compensated involute curve.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2002.05a
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• pp.27-30
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• 2002

Contemporary architecture calls for a wide range of surface textures and treatments. A surface compatible with the architect's design may vary from a glass-smooth finish to one requiring special sculptured ornamentation. These surfaces require many different types of form sheathing and lining. The purpose of study development new design form and made elaborateness shape. Easy to used in field that architecture finish material not used expect effective reduce of working hours, personnel expenses, architecture finish material, cost. After this, building wall apply a variety shape in concrete surface.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2003.05a
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• pp.44-48
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• 2003

In metal working, cold forging that has profit to satisfy dimension accuracy is using in various manufacturing products. Recently, most of the interest thing is precision forging of gear, Gear forging product is more strength than broaching gear, and it has many advantages with reduction of factory expenses. The reason of difficulty to improve accuracy of gear dimension compare to another products is the dimension accuracy is very high, approximately 10$\mu\textrm{m}$, and because die of involute teeth and elastic strain of forged tool differ from standard curve. This paper represent quantitative analysis of die and teeth of forged tool, namely difference of curves, with experiments and analyze the factor of dimension gap, finally, will design compensated involute curve.

• Proceedings of the Korean Professional Engineer Association Conference
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• 1995.12b
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• pp.65-79
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• 1995

As the economy has picked up in recent years, so have the changes in the food industry. Due to trends in the family structure, two income households are becoming more common, including the in-crease of the female working population. Leisure activities and time continue to increase and to cause changes in the food industry which makes many kinds of food available to everyone, compared to previous times when people ate simply to live. This trend can be easily seen by considering the year to year increase of expenses for eating out. As life as become more and more complicated and full of variety, the trend towards a consumer oriented food industry has accelerated and is becoming a major element of Korean life. In the past, quantity of food was the most important aspect of the food preparation. Today, the dining experience includes social and cultural meanings which emphasizes customar oriented menus and services. In the restaurant business, successful management must consider the interests of both employees and custmers and must be run efficiently and probide good service.

• Journal of environmental and Sanitary engineering
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• v.14 no.4
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• pp.124-136
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• 1999

This paper investigated the symptoms of taxi drivers' physical self-consciousness. As the subjects for the study, 374 taxi drivers participated in the survey for three months, and its result showed as follows:1. In the items of the physical symptoms, the eye's fatigue was indicated as a greatest complaint, and the corporate-taxi drivers showed a higher complaint rate than the owner-taxi drivers. 2. The survey also indicated that taxi drivers over 50 years old showed the highest complaining rate of eye's fatigue, shoulder pain, loins pain, and severe headache. Feelings of burning on empty stomach was the highest complaint factor in the age group between 30 and 39 years old, and pain and burning feelings in eyes in the age group between 20 and 29 years old.3. In the study of the complaining rate of physical symptoms by working hours, the nighttime driers complained of their self-consciousness symptoms of leg and knee pain, shoulder pain, benumbed legs, and these drivers also showed a relatively high complaint rate resulting from the responsibility of living expenses.

• Proceedings of the Korea Concrete Institute Conference
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• 2003.11a
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• pp.565-568
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• 2003

Contemporary, architecture calls for a wide range of surface textures and treatments. A surface compatible with the architecture's design may vary from a glass-smooth finish to one requiring special sculptured ornamentation. These surfaces require many different types of form sheathing and lining. The purpose of study development new design form and made elaborateness shape. Easy to used in field that architecture finish material not used expect effective reduce of working hours, personnel expenses, architecture finish material, cost. though this study, we have figured out the best mix proportion for durability and glossability of glossing exposure concrete.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2000.11a
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• pp.838-841
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• 2000

To improve the accuracy of products and improve the product quality, we need to enhance the machining accuracy of the machine tools. To this point of view, measurement and inspection of finished part as well as error analysis of machine tools has been studied for last several decades. OMM(On the Machine Measurement) has been issued to alternate with CMM, pointing out disadvantages of high expenses and lots of setting time in CMM. In this paper, we study 1) the spherical surface manufacturing by volumetric error compensation of machine tool, 2) the system development of OMM without detaching work piece from a bed of machine tool after working. 3) the generation of the finished part profile by On the machine measurement. Furthermore, the output of OMM is compared with that of CMM, and verified the feasibility of the measurement system.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2003.04a
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• pp.45-49
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• 2003

According to the rising of national economic level, domestic consumption of vegetables having high additive values is increased continuously due to increased consumption of meat in last decade. These vegetables are produced almost in this country and are limited to import from neighbor countries in due of high transportation expenses for storing in refrigerated container. It is very important to mechanize the harvest work, forming more than 30% for their production cost, in order to cultivate variable vegetables at the same time according to their harvesting seasons. In this state its former harvest methods, with using of human power or semi-automatic harvest, caused to increase their production cost due to high labor cost and low working efficiency.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2003.05a
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• pp.229-233
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• 2003

The soundproof barrier used to reduce the traffic and rail noise is usually designed to the point of view of the acoustic performance such as absorption ratio and transmission loss. But, because the surface of soundproof barrier is polluted by the air pollutant or discharge gas of automobiles, so it's surface cleary maintained by the periodic washing with detergent. But in this case the environmental pollution and the working expenses are worried. So, the objective of this study is to develope the soundproof panel with the self-cleaning properties only by raining.